diff options
| author |   C.J. Collier <cjcollier@linuxfoundation.org> | 2016-06-14 07:50:17 -0700 |
|---|---|---|
| committer | C.J. Collier <cjcollier@linuxfoundation.org> | 2016-06-14 12:17:54 -0700 |
| commit | 97f17497d162afdb82c8704bf097f0fee3724b2e (patch) | |
| tree | 1c6269614c0c15ffef8451c58ae8f8b30a1bc804 /drivers/net/ixgbe/ixgbe_rxtx.c | |
| parent | e04be89c2409570e0055b2cda60bd11395bb93b0 (diff) | |
Imported Upstream version 16.04
Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757
Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>
Diffstat (limited to 'drivers/net/ixgbe/ixgbe_rxtx.c')
| -rw-r--r-- | drivers/net/ixgbe/ixgbe_rxtx.c | 5247 |
1 files changed, 5247 insertions, 0 deletions
diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c new file mode 100644 index 00000000..9fb38a6c --- /dev/null +++ b/drivers/net/ixgbe/ixgbe_rxtx.c @@ -0,0 +1,5247 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2015 Intel Corporation. All rights reserved. + * Copyright 2014 6WIND S.A. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/queue.h> + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <stdint.h> +#include <stdarg.h> +#include <unistd.h> +#include <inttypes.h> + +#include <rte_byteorder.h> +#include <rte_common.h> +#include <rte_cycles.h> +#include <rte_log.h> +#include <rte_debug.h> +#include <rte_interrupts.h> +#include <rte_pci.h> +#include <rte_memory.h> +#include <rte_memzone.h> +#include <rte_launch.h> +#include <rte_eal.h> +#include <rte_per_lcore.h> +#include <rte_lcore.h> +#include <rte_atomic.h> +#include <rte_branch_prediction.h> +#include <rte_ring.h> +#include <rte_mempool.h> +#include <rte_malloc.h> +#include <rte_mbuf.h> +#include <rte_ether.h> +#include <rte_ethdev.h> +#include <rte_prefetch.h> +#include <rte_udp.h> +#include <rte_tcp.h> +#include <rte_sctp.h> +#include <rte_string_fns.h> +#include <rte_errno.h> +#include <rte_ip.h> + +#include "ixgbe_logs.h" +#include "base/ixgbe_api.h" +#include "base/ixgbe_vf.h" +#include "ixgbe_ethdev.h" +#include "base/ixgbe_dcb.h" +#include "base/ixgbe_common.h" +#include "ixgbe_rxtx.h" + +/* Bit Mask to indicate what bits required for building TX context */ +#define IXGBE_TX_OFFLOAD_MASK ( \ + PKT_TX_VLAN_PKT | \ + PKT_TX_IP_CKSUM | \ + PKT_TX_L4_MASK | \ + PKT_TX_TCP_SEG | \ + PKT_TX_OUTER_IP_CKSUM) + +static inline struct rte_mbuf * +rte_rxmbuf_alloc(struct rte_mempool *mp) +{ + struct rte_mbuf *m; + + m = __rte_mbuf_raw_alloc(mp); + __rte_mbuf_sanity_check_raw(m, 0); + return m; +} + + +#if 1 +#define RTE_PMD_USE_PREFETCH +#endif + +#ifdef RTE_PMD_USE_PREFETCH +/* + * Prefetch a cache line into all cache levels. + */ +#define rte_ixgbe_prefetch(p) rte_prefetch0(p) +#else +#define rte_ixgbe_prefetch(p) do {} while (0) +#endif + +/********************************************************************* + * + * TX functions + * + **********************************************************************/ + +/* + * Check for descriptors with their DD bit set and free mbufs. + * Return the total number of buffers freed. + */ +static inline int __attribute__((always_inline)) +ixgbe_tx_free_bufs(struct ixgbe_tx_queue *txq) +{ + struct ixgbe_tx_entry *txep; + uint32_t status; + int i, nb_free = 0; + struct rte_mbuf *m, *free[RTE_IXGBE_TX_MAX_FREE_BUF_SZ]; + + /* check DD bit on threshold descriptor */ + status = txq->tx_ring[txq->tx_next_dd].wb.status; + if (!(status & rte_cpu_to_le_32(IXGBE_ADVTXD_STAT_DD))) + return 0; + + /* + * first buffer to free from S/W ring is at index + * tx_next_dd - (tx_rs_thresh-1) + */ + txep = &(txq->sw_ring[txq->tx_next_dd - (txq->tx_rs_thresh - 1)]); + + for (i = 0; i < txq->tx_rs_thresh; ++i, ++txep) { + /* free buffers one at a time */ + m = __rte_pktmbuf_prefree_seg(txep->mbuf); + txep->mbuf = NULL; + + if (unlikely(m == NULL)) + continue; + + if (nb_free >= RTE_IXGBE_TX_MAX_FREE_BUF_SZ || + (nb_free > 0 && m->pool != free[0]->pool)) { + rte_mempool_put_bulk(free[0]->pool, + (void **)free, nb_free); + nb_free = 0; + } + + free[nb_free++] = m; + } + + if (nb_free > 0) + rte_mempool_put_bulk(free[0]->pool, (void **)free, nb_free); + + /* buffers were freed, update counters */ + txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + txq->tx_rs_thresh); + txq->tx_next_dd = (uint16_t)(txq->tx_next_dd + txq->tx_rs_thresh); + if (txq->tx_next_dd >= txq->nb_tx_desc) + txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1); + + return txq->tx_rs_thresh; +} + +/* Populate 4 descriptors with data from 4 mbufs */ +static inline void +tx4(volatile union ixgbe_adv_tx_desc *txdp, struct rte_mbuf **pkts) +{ + uint64_t buf_dma_addr; + uint32_t pkt_len; + int i; + + for (i = 0; i < 4; ++i, ++txdp, ++pkts) { + buf_dma_addr = rte_mbuf_data_dma_addr(*pkts); + pkt_len = (*pkts)->data_len; + + /* write data to descriptor */ + txdp->read.buffer_addr = rte_cpu_to_le_64(buf_dma_addr); + + txdp->read.cmd_type_len = + rte_cpu_to_le_32((uint32_t)DCMD_DTYP_FLAGS | pkt_len); + + txdp->read.olinfo_status = + rte_cpu_to_le_32(pkt_len << IXGBE_ADVTXD_PAYLEN_SHIFT); + + rte_prefetch0(&(*pkts)->pool); + } +} + +/* Populate 1 descriptor with data from 1 mbuf */ +static inline void +tx1(volatile union ixgbe_adv_tx_desc *txdp, struct rte_mbuf **pkts) +{ + uint64_t buf_dma_addr; + uint32_t pkt_len; + + buf_dma_addr = rte_mbuf_data_dma_addr(*pkts); + pkt_len = (*pkts)->data_len; + + /* write data to descriptor */ + txdp->read.buffer_addr = rte_cpu_to_le_64(buf_dma_addr); + txdp->read.cmd_type_len = + rte_cpu_to_le_32((uint32_t)DCMD_DTYP_FLAGS | pkt_len); + txdp->read.olinfo_status = + rte_cpu_to_le_32(pkt_len << IXGBE_ADVTXD_PAYLEN_SHIFT); + rte_prefetch0(&(*pkts)->pool); +} + +/* + * Fill H/W descriptor ring with mbuf data. + * Copy mbuf pointers to the S/W ring. + */ +static inline void +ixgbe_tx_fill_hw_ring(struct ixgbe_tx_queue *txq, struct rte_mbuf **pkts, + uint16_t nb_pkts) +{ + volatile union ixgbe_adv_tx_desc *txdp = &(txq->tx_ring[txq->tx_tail]); + struct ixgbe_tx_entry *txep = &(txq->sw_ring[txq->tx_tail]); + const int N_PER_LOOP = 4; + const int N_PER_LOOP_MASK = N_PER_LOOP-1; + int mainpart, leftover; + int i, j; + + /* + * Process most of the packets in chunks of N pkts. Any + * leftover packets will get processed one at a time. + */ + mainpart = (nb_pkts & ((uint32_t) ~N_PER_LOOP_MASK)); + leftover = (nb_pkts & ((uint32_t) N_PER_LOOP_MASK)); + for (i = 0; i < mainpart; i += N_PER_LOOP) { + /* Copy N mbuf pointers to the S/W ring */ + for (j = 0; j < N_PER_LOOP; ++j) { + (txep + i + j)->mbuf = *(pkts + i + j); + } + tx4(txdp + i, pkts + i); + } + + if (unlikely(leftover > 0)) { + for (i = 0; i < leftover; ++i) { + (txep + mainpart + i)->mbuf = *(pkts + mainpart + i); + tx1(txdp + mainpart + i, pkts + mainpart + i); + } + } +} + +static inline uint16_t +tx_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, + uint16_t nb_pkts) +{ + struct ixgbe_tx_queue *txq = (struct ixgbe_tx_queue *)tx_queue; + volatile union ixgbe_adv_tx_desc *tx_r = txq->tx_ring; + uint16_t n = 0; + + /* + * Begin scanning the H/W ring for done descriptors when the + * number of available descriptors drops below tx_free_thresh. For + * each done descriptor, free the associated buffer. + */ + if (txq->nb_tx_free < txq->tx_free_thresh) + ixgbe_tx_free_bufs(txq); + + /* Only use descriptors that are available */ + nb_pkts = (uint16_t)RTE_MIN(txq->nb_tx_free, nb_pkts); + if (unlikely(nb_pkts == 0)) + return 0; + + /* Use exactly nb_pkts descriptors */ + txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_pkts); + + /* + * At this point, we know there are enough descriptors in the + * ring to transmit all the packets. This assumes that each + * mbuf contains a single segment, and that no new offloads + * are expected, which would require a new context descriptor. + */ + + /* + * See if we're going to wrap-around. If so, handle the top + * of the descriptor ring first, then do the bottom. If not, + * the processing looks just like the "bottom" part anyway... + */ + if ((txq->tx_tail + nb_pkts) > txq->nb_tx_desc) { + n = (uint16_t)(txq->nb_tx_desc - txq->tx_tail); + ixgbe_tx_fill_hw_ring(txq, tx_pkts, n); + + /* + * We know that the last descriptor in the ring will need to + * have its RS bit set because tx_rs_thresh has to be + * a divisor of the ring size + */ + tx_r[txq->tx_next_rs].read.cmd_type_len |= + rte_cpu_to_le_32(IXGBE_ADVTXD_DCMD_RS); + txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1); + + txq->tx_tail = 0; + } + + /* Fill H/W descriptor ring with mbuf data */ + ixgbe_tx_fill_hw_ring(txq, tx_pkts + n, (uint16_t)(nb_pkts - n)); + txq->tx_tail = (uint16_t)(txq->tx_tail + (nb_pkts - n)); + + /* + * Determine if RS bit should be set + * This is what we actually want: + * if ((txq->tx_tail - 1) >= txq->tx_next_rs) + * but instead of subtracting 1 and doing >=, we can just do + * greater than without subtracting. + */ + if (txq->tx_tail > txq->tx_next_rs) { + tx_r[txq->tx_next_rs].read.cmd_type_len |= + rte_cpu_to_le_32(IXGBE_ADVTXD_DCMD_RS); + txq->tx_next_rs = (uint16_t)(txq->tx_next_rs + + txq->tx_rs_thresh); + if (txq->tx_next_rs >= txq->nb_tx_desc) + txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1); + } + + /* + * Check for wrap-around. This would only happen if we used + * up to the last descriptor in the ring, no more, no less. + */ + if (txq->tx_tail >= txq->nb_tx_desc) + txq->tx_tail = 0; + + /* update tail pointer */ + rte_wmb(); + IXGBE_PCI_REG_WRITE(txq->tdt_reg_addr, txq->tx_tail); + + return nb_pkts; +} + +uint16_t +ixgbe_xmit_pkts_simple(void *tx_queue, struct rte_mbuf **tx_pkts, + uint16_t nb_pkts) +{ + uint16_t nb_tx; + + /* Try to transmit at least chunks of TX_MAX_BURST pkts */ + if (likely(nb_pkts <= RTE_PMD_IXGBE_TX_MAX_BURST)) + return tx_xmit_pkts(tx_queue, tx_pkts, nb_pkts); + + /* transmit more than the max burst, in chunks of TX_MAX_BURST */ + nb_tx = 0; + while (nb_pkts) { + uint16_t ret, n; + n = (uint16_t)RTE_MIN(nb_pkts, RTE_PMD_IXGBE_TX_MAX_BURST); + ret = tx_xmit_pkts(tx_queue, &(tx_pkts[nb_tx]), n); + nb_tx = (uint16_t)(nb_tx + ret); + nb_pkts = (uint16_t)(nb_pkts - ret); + if (ret < n) + break; + } + + return nb_tx; +} + +static inline void +ixgbe_set_xmit_ctx(struct ixgbe_tx_queue *txq, + volatile struct ixgbe_adv_tx_context_desc *ctx_txd, + uint64_t ol_flags, union ixgbe_tx_offload tx_offload) +{ + uint32_t type_tucmd_mlhl; + uint32_t mss_l4len_idx = 0; + uint32_t ctx_idx; + uint32_t vlan_macip_lens; + union ixgbe_tx_offload tx_offload_mask; + uint32_t seqnum_seed = 0; + + ctx_idx = txq->ctx_curr; + tx_offload_mask.data[0] = 0; + tx_offload_mask.data[1] = 0; + type_tucmd_mlhl = 0; + + /* Specify which HW CTX to upload. */ + mss_l4len_idx |= (ctx_idx << IXGBE_ADVTXD_IDX_SHIFT); + + if (ol_flags & PKT_TX_VLAN_PKT) { + tx_offload_mask.vlan_tci |= ~0; + } + + /* check if TCP segmentation required for this packet */ + if (ol_flags & PKT_TX_TCP_SEG) { + /* implies IP cksum in IPv4 */ + if (ol_flags & PKT_TX_IP_CKSUM) + type_tucmd_mlhl = IXGBE_ADVTXD_TUCMD_IPV4 | + IXGBE_ADVTXD_TUCMD_L4T_TCP | + IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT; + else + type_tucmd_mlhl = IXGBE_ADVTXD_TUCMD_IPV6 | + IXGBE_ADVTXD_TUCMD_L4T_TCP | + IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT; + + tx_offload_mask.l2_len |= ~0; + tx_offload_mask.l3_len |= ~0; + tx_offload_mask.l4_len |= ~0; + tx_offload_mask.tso_segsz |= ~0; + mss_l4len_idx |= tx_offload.tso_segsz << IXGBE_ADVTXD_MSS_SHIFT; + mss_l4len_idx |= tx_offload.l4_len << IXGBE_ADVTXD_L4LEN_SHIFT; + } else { /* no TSO, check if hardware checksum is needed */ + if (ol_flags & PKT_TX_IP_CKSUM) { + type_tucmd_mlhl = IXGBE_ADVTXD_TUCMD_IPV4; + tx_offload_mask.l2_len |= ~0; + tx_offload_mask.l3_len |= ~0; + } + + switch (ol_flags & PKT_TX_L4_MASK) { + case PKT_TX_UDP_CKSUM: + type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_UDP | + IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT; + mss_l4len_idx |= sizeof(struct udp_hdr) << IXGBE_ADVTXD_L4LEN_SHIFT; + tx_offload_mask.l2_len |= ~0; + tx_offload_mask.l3_len |= ~0; + break; + case PKT_TX_TCP_CKSUM: + type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_TCP | + IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT; + mss_l4len_idx |= sizeof(struct tcp_hdr) << IXGBE_ADVTXD_L4LEN_SHIFT; + tx_offload_mask.l2_len |= ~0; + tx_offload_mask.l3_len |= ~0; + break; + case PKT_TX_SCTP_CKSUM: + type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_SCTP | + IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT; + mss_l4len_idx |= sizeof(struct sctp_hdr) << IXGBE_ADVTXD_L4LEN_SHIFT; + tx_offload_mask.l2_len |= ~0; + tx_offload_mask.l3_len |= ~0; + break; + default: + type_tucmd_mlhl |= IXGBE_ADVTXD_TUCMD_L4T_RSV | + IXGBE_ADVTXD_DTYP_CTXT | IXGBE_ADVTXD_DCMD_DEXT; + break; + } + } + + if (ol_flags & PKT_TX_OUTER_IP_CKSUM) { + tx_offload_mask.outer_l2_len |= ~0; + tx_offload_mask.outer_l3_len |= ~0; + tx_offload_mask.l2_len |= ~0; + seqnum_seed |= tx_offload.outer_l3_len + << IXGBE_ADVTXD_OUTER_IPLEN; + seqnum_seed |= tx_offload.l2_len + << IXGBE_ADVTXD_TUNNEL_LEN; + } + + txq->ctx_cache[ctx_idx].flags = ol_flags; + txq->ctx_cache[ctx_idx].tx_offload.data[0] = + tx_offload_mask.data[0] & tx_offload.data[0]; + txq->ctx_cache[ctx_idx].tx_offload.data[1] = + tx_offload_mask.data[1] & tx_offload.data[1]; + txq->ctx_cache[ctx_idx].tx_offload_mask = tx_offload_mask; + + ctx_txd->type_tucmd_mlhl = rte_cpu_to_le_32(type_tucmd_mlhl); + vlan_macip_lens = tx_offload.l3_len; + if (ol_flags & PKT_TX_OUTER_IP_CKSUM) + vlan_macip_lens |= (tx_offload.outer_l2_len << + IXGBE_ADVTXD_MACLEN_SHIFT); + else + vlan_macip_lens |= (tx_offload.l2_len << + IXGBE_ADVTXD_MACLEN_SHIFT); + vlan_macip_lens |= ((uint32_t)tx_offload.vlan_tci << IXGBE_ADVTXD_VLAN_SHIFT); + ctx_txd->vlan_macip_lens = rte_cpu_to_le_32(vlan_macip_lens); + ctx_txd->mss_l4len_idx = rte_cpu_to_le_32(mss_l4len_idx); + ctx_txd->seqnum_seed = seqnum_seed; +} + +/* + * Check which hardware context can be used. Use the existing match + * or create a new context descriptor. + */ +static inline uint32_t +what_advctx_update(struct ixgbe_tx_queue *txq, uint64_t flags, + union ixgbe_tx_offload tx_offload) +{ + /* If match with the current used context */ + if (likely((txq->ctx_cache[txq->ctx_curr].flags == flags) && + (txq->ctx_cache[txq->ctx_curr].tx_offload.data[0] == + (txq->ctx_cache[txq->ctx_curr].tx_offload_mask.data[0] + & tx_offload.data[0])) && + (txq->ctx_cache[txq->ctx_curr].tx_offload.data[1] == + (txq->ctx_cache[txq->ctx_curr].tx_offload_mask.data[1] + & tx_offload.data[1])))) { + return txq->ctx_curr; + } + + /* What if match with the next context */ + txq->ctx_curr ^= 1; + if (likely((txq->ctx_cache[txq->ctx_curr].flags == flags) && + (txq->ctx_cache[txq->ctx_curr].tx_offload.data[0] == + (txq->ctx_cache[txq->ctx_curr].tx_offload_mask.data[0] + & tx_offload.data[0])) && + (txq->ctx_cache[txq->ctx_curr].tx_offload.data[1] == + (txq->ctx_cache[txq->ctx_curr].tx_offload_mask.data[1] + & tx_offload.data[1])))) { + return txq->ctx_curr; + } + + /* Mismatch, use the previous context */ + return IXGBE_CTX_NUM; +} + +static inline uint32_t +tx_desc_cksum_flags_to_olinfo(uint64_t ol_flags) +{ + uint32_t tmp = 0; + if ((ol_flags & PKT_TX_L4_MASK) != PKT_TX_L4_NO_CKSUM) + tmp |= IXGBE_ADVTXD_POPTS_TXSM; + if (ol_flags & PKT_TX_IP_CKSUM) + tmp |= IXGBE_ADVTXD_POPTS_IXSM; + if (ol_flags & PKT_TX_TCP_SEG) + tmp |= IXGBE_ADVTXD_POPTS_TXSM; + return tmp; +} + +static inline uint32_t +tx_desc_ol_flags_to_cmdtype(uint64_t ol_flags) +{ + uint32_t cmdtype = 0; + if (ol_flags & PKT_TX_VLAN_PKT) + cmdtype |= IXGBE_ADVTXD_DCMD_VLE; + if (ol_flags & PKT_TX_TCP_SEG) + cmdtype |= IXGBE_ADVTXD_DCMD_TSE; + if (ol_flags & PKT_TX_OUTER_IP_CKSUM) + cmdtype |= (1 << IXGBE_ADVTXD_OUTERIPCS_SHIFT); + return cmdtype; +} + +/* Default RS bit threshold values */ +#ifndef DEFAULT_TX_RS_THRESH +#define DEFAULT_TX_RS_THRESH 32 +#endif +#ifndef DEFAULT_TX_FREE_THRESH +#define DEFAULT_TX_FREE_THRESH 32 +#endif + +/* Reset transmit descriptors after they have been used */ +static inline int +ixgbe_xmit_cleanup(struct ixgbe_tx_queue *txq) +{ + struct ixgbe_tx_entry *sw_ring = txq->sw_ring; + volatile union ixgbe_adv_tx_desc *txr = txq->tx_ring; + uint16_t last_desc_cleaned = txq->last_desc_cleaned; + uint16_t nb_tx_desc = txq->nb_tx_desc; + uint16_t desc_to_clean_to; + uint16_t nb_tx_to_clean; + uint32_t status; + + /* Determine the last descriptor needing to be cleaned */ + desc_to_clean_to = (uint16_t)(last_desc_cleaned + txq->tx_rs_thresh); + if (desc_to_clean_to >= nb_tx_desc) + desc_to_clean_to = (uint16_t)(desc_to_clean_to - nb_tx_desc); + + /* Check to make sure the last descriptor to clean is done */ + desc_to_clean_to = sw_ring[desc_to_clean_to].last_id; + status = txr[desc_to_clean_to].wb.status; + if (!(status & rte_cpu_to_le_32(IXGBE_TXD_STAT_DD))) + { + PMD_TX_FREE_LOG(DEBUG, + "TX descriptor %4u is not done" + "(port=%d queue=%d)", + desc_to_clean_to, + txq->port_id, txq->queue_id); + /* Failed to clean any descriptors, better luck next time */ + return -(1); + } + + /* Figure out how many descriptors will be cleaned */ + if (last_desc_cleaned > desc_to_clean_to) + nb_tx_to_clean = (uint16_t)((nb_tx_desc - last_desc_cleaned) + + desc_to_clean_to); + else + nb_tx_to_clean = (uint16_t)(desc_to_clean_to - + last_desc_cleaned); + + PMD_TX_FREE_LOG(DEBUG, + "Cleaning %4u TX descriptors: %4u to %4u " + "(port=%d queue=%d)", + nb_tx_to_clean, last_desc_cleaned, desc_to_clean_to, + txq->port_id, txq->queue_id); + + /* + * The last descriptor to clean is done, so that means all the + * descriptors from the last descriptor that was cleaned + * up to the last descriptor with the RS bit set + * are done. Only reset the threshold descriptor. + */ + txr[desc_to_clean_to].wb.status = 0; + + /* Update the txq to reflect the last descriptor that was cleaned */ + txq->last_desc_cleaned = desc_to_clean_to; + txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + nb_tx_to_clean); + + /* No Error */ + return 0; +} + +uint16_t +ixgbe_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, + uint16_t nb_pkts) +{ + struct ixgbe_tx_queue *txq; + struct ixgbe_tx_entry *sw_ring; + struct ixgbe_tx_entry *txe, *txn; + volatile union ixgbe_adv_tx_desc *txr; + volatile union ixgbe_adv_tx_desc *txd, *txp; + struct rte_mbuf *tx_pkt; + struct rte_mbuf *m_seg; + uint64_t buf_dma_addr; + uint32_t olinfo_status; + uint32_t cmd_type_len; + uint32_t pkt_len; + uint16_t slen; + uint64_t ol_flags; + uint16_t tx_id; + uint16_t tx_last; + uint16_t nb_tx; + uint16_t nb_used; + uint64_t tx_ol_req; + uint32_t ctx = 0; + uint32_t new_ctx; + union ixgbe_tx_offload tx_offload; + + tx_offload.data[0] = 0; + tx_offload.data[1] = 0; + txq = tx_queue; + sw_ring = txq->sw_ring; + txr = txq->tx_ring; + tx_id = txq->tx_tail; + txe = &sw_ring[tx_id]; + txp = NULL; + + /* Determine if the descriptor ring needs to be cleaned. */ + if (txq->nb_tx_free < txq->tx_free_thresh) + ixgbe_xmit_cleanup(txq); + + rte_prefetch0(&txe->mbuf->pool); + + /* TX loop */ + for (nb_tx = 0; nb_tx < nb_pkts; nb_tx++) { + new_ctx = 0; + tx_pkt = *tx_pkts++; + pkt_len = tx_pkt->pkt_len; + + /* + * Determine how many (if any) context descriptors + * are needed for offload functionality. + */ + ol_flags = tx_pkt->ol_flags; + + /* If hardware offload required */ + tx_ol_req = ol_flags & IXGBE_TX_OFFLOAD_MASK; + if (tx_ol_req) { + tx_offload.l2_len = tx_pkt->l2_len; + tx_offload.l3_len = tx_pkt->l3_len; + tx_offload.l4_len = tx_pkt->l4_len; + tx_offload.vlan_tci = tx_pkt->vlan_tci; + tx_offload.tso_segsz = tx_pkt->tso_segsz; + tx_offload.outer_l2_len = tx_pkt->outer_l2_len; + tx_offload.outer_l3_len = tx_pkt->outer_l3_len; + + /* If new context need be built or reuse the exist ctx. */ + ctx = what_advctx_update(txq, tx_ol_req, + tx_offload); + /* Only allocate context descriptor if required*/ + new_ctx = (ctx == IXGBE_CTX_NUM); + ctx = txq->ctx_curr; + } + + /* + * Keep track of how many descriptors are used this loop + * This will always be the number of segments + the number of + * Context descriptors required to transmit the packet + */ + nb_used = (uint16_t)(tx_pkt->nb_segs + new_ctx); + + if (txp != NULL && + nb_used + txq->nb_tx_used >= txq->tx_rs_thresh) + /* set RS on the previous packet in the burst */ + txp->read.cmd_type_len |= + rte_cpu_to_le_32(IXGBE_TXD_CMD_RS); + + /* + * The number of descriptors that must be allocated for a + * packet is the number of segments of that packet, plus 1 + * Context Descriptor for the hardware offload, if any. + * Determine the last TX descriptor to allocate in the TX ring + * for the packet, starting from the current position (tx_id) + * in the ring. + */ + tx_last = (uint16_t) (tx_id + nb_used - 1); + + /* Circular ring */ + if (tx_last >= txq->nb_tx_desc) + tx_last = (uint16_t) (tx_last - txq->nb_tx_desc); + + PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u pktlen=%u" + " tx_first=%u tx_last=%u", + (unsigned) txq->port_id, + (unsigned) txq->queue_id, + (unsigned) pkt_len, + (unsigned) tx_id, + (unsigned) tx_last); + + /* + * Make sure there are enough TX descriptors available to + * transmit the entire packet. + * nb_used better be less than or equal to txq->tx_rs_thresh + */ + if (nb_used > txq->nb_tx_free) { + PMD_TX_FREE_LOG(DEBUG, + "Not enough free TX descriptors " + "nb_used=%4u nb_free=%4u " + "(port=%d queue=%d)", + nb_used, txq->nb_tx_free, + txq->port_id, txq->queue_id); + + if (ixgbe_xmit_cleanup(txq) != 0) { + /* Could not clean any descriptors */ + if (nb_tx == 0) + return 0; + goto end_of_tx; + } + + /* nb_used better be <= txq->tx_rs_thresh */ + if (unlikely(nb_used > txq->tx_rs_thresh)) { + PMD_TX_FREE_LOG(DEBUG, + "The number of descriptors needed to " + "transmit the packet exceeds the " + "RS bit threshold. This will impact " + "performance." + "nb_used=%4u nb_free=%4u " + "tx_rs_thresh=%4u. " + "(port=%d queue=%d)", + nb_used, txq->nb_tx_free, + txq->tx_rs_thresh, + txq->port_id, txq->queue_id); + /* + * Loop here until there are enough TX + * descriptors or until the ring cannot be + * cleaned. + */ + while (nb_used > txq->nb_tx_free) { + if (ixgbe_xmit_cleanup(txq) != 0) { + /* + * Could not clean any + * descriptors + */ + if (nb_tx == 0) + return 0; + goto end_of_tx; + } + } + } + } + + /* + * By now there are enough free TX descriptors to transmit + * the packet. + */ + + /* + * Set common flags of all TX Data Descriptors. + * + * The following bits must be set in all Data Descriptors: + * - IXGBE_ADVTXD_DTYP_DATA + * - IXGBE_ADVTXD_DCMD_DEXT + * + * The following bits must be set in the first Data Descriptor + * and are ignored in the other ones: + * - IXGBE_ADVTXD_DCMD_IFCS + * - IXGBE_ADVTXD_MAC_1588 + * - IXGBE_ADVTXD_DCMD_VLE + * + * The following bits must only be set in the last Data + * Descriptor: + * - IXGBE_TXD_CMD_EOP + * + * The following bits can be set in any Data Descriptor, but + * are only set in the last Data Descriptor: + * - IXGBE_TXD_CMD_RS + */ + cmd_type_len = IXGBE_ADVTXD_DTYP_DATA | + IXGBE_ADVTXD_DCMD_IFCS | IXGBE_ADVTXD_DCMD_DEXT; + +#ifdef RTE_LIBRTE_IEEE1588 + if (ol_flags & PKT_TX_IEEE1588_TMST) + cmd_type_len |= IXGBE_ADVTXD_MAC_1588; +#endif + + olinfo_status = 0; + if (tx_ol_req) { + + if (ol_flags & PKT_TX_TCP_SEG) { + /* when TSO is on, paylen in descriptor is the + * not the packet len but the tcp payload len */ + pkt_len -= (tx_offload.l2_len + + tx_offload.l3_len + tx_offload.l4_len); + } + + /* + * Setup the TX Advanced Context Descriptor if required + */ + if (new_ctx) { + volatile struct ixgbe_adv_tx_context_desc * + ctx_txd; + + ctx_txd = (volatile struct + ixgbe_adv_tx_context_desc *) + &txr[tx_id]; + + txn = &sw_ring[txe->next_id]; + rte_prefetch0(&txn->mbuf->pool); + + if (txe->mbuf != NULL) { + rte_pktmbuf_free_seg(txe->mbuf); + txe->mbuf = NULL; + } + + ixgbe_set_xmit_ctx(txq, ctx_txd, tx_ol_req, + tx_offload); + + txe->last_id = tx_last; + tx_id = txe->next_id; + txe = txn; + } + + /* + * Setup the TX Advanced Data Descriptor, + * This path will go through + * whatever new/reuse the context descriptor + */ + cmd_type_len |= tx_desc_ol_flags_to_cmdtype(ol_flags); + olinfo_status |= tx_desc_cksum_flags_to_olinfo(ol_flags); + olinfo_status |= ctx << IXGBE_ADVTXD_IDX_SHIFT; + } + + olinfo_status |= (pkt_len << IXGBE_ADVTXD_PAYLEN_SHIFT); + + m_seg = tx_pkt; + do { + txd = &txr[tx_id]; + txn = &sw_ring[txe->next_id]; + rte_prefetch0(&txn->mbuf->pool); + + if (txe->mbuf != NULL) + rte_pktmbuf_free_seg(txe->mbuf); + txe->mbuf = m_seg; + + /* + * Set up Transmit Data Descriptor. + */ + slen = m_seg->data_len; + buf_dma_addr = rte_mbuf_data_dma_addr(m_seg); + txd->read.buffer_addr = + rte_cpu_to_le_64(buf_dma_addr); + txd->read.cmd_type_len = + rte_cpu_to_le_32(cmd_type_len | slen); + txd->read.olinfo_status = + rte_cpu_to_le_32(olinfo_status); + txe->last_id = tx_last; + tx_id = txe->next_id; + txe = txn; + m_seg = m_seg->next; + } while (m_seg != NULL); + + /* + * The last packet data descriptor needs End Of Packet (EOP) + */ + cmd_type_len |= IXGBE_TXD_CMD_EOP; + txq->nb_tx_used = (uint16_t)(txq->nb_tx_used + nb_used); + txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_used); + + /* Set RS bit only on threshold packets' last descriptor */ + if (txq->nb_tx_used >= txq->tx_rs_thresh) { + PMD_TX_FREE_LOG(DEBUG, + "Setting RS bit on TXD id=" + "%4u (port=%d queue=%d)", + tx_last, txq->port_id, txq->queue_id); + + cmd_type_len |= IXGBE_TXD_CMD_RS; + + /* Update txq RS bit counters */ + txq->nb_tx_used = 0; + txp = NULL; + } else + txp = txd; + + txd->read.cmd_type_len |= rte_cpu_to_le_32(cmd_type_len); + } + +end_of_tx: + /* set RS on last packet in the burst */ + if (txp != NULL) + txp->read.cmd_type_len |= rte_cpu_to_le_32(IXGBE_TXD_CMD_RS); + + rte_wmb(); + + /* + * Set the Transmit Descriptor Tail (TDT) + */ + PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u tx_tail=%u nb_tx=%u", + (unsigned) txq->port_id, (unsigned) txq->queue_id, + (unsigned) tx_id, (unsigned) nb_tx); + IXGBE_PCI_REG_WRITE(txq->tdt_reg_addr, tx_id); + txq->tx_tail = tx_id; + + return nb_tx; +} + +/********************************************************************* + * + * RX functions + * + **********************************************************************/ +#define IXGBE_PACKET_TYPE_IPV4 0X01 +#define IXGBE_PACKET_TYPE_IPV4_TCP 0X11 +#define IXGBE_PACKET_TYPE_IPV4_UDP 0X21 +#define IXGBE_PACKET_TYPE_IPV4_SCTP 0X41 +#define IXGBE_PACKET_TYPE_IPV4_EXT 0X03 +#define IXGBE_PACKET_TYPE_IPV4_EXT_SCTP 0X43 +#define IXGBE_PACKET_TYPE_IPV6 0X04 +#define IXGBE_PACKET_TYPE_IPV6_TCP 0X14 +#define IXGBE_PACKET_TYPE_IPV6_UDP 0X24 +#define IXGBE_PACKET_TYPE_IPV6_EXT 0X0C +#define IXGBE_PACKET_TYPE_IPV6_EXT_TCP 0X1C +#define IXGBE_PACKET_TYPE_IPV6_EXT_UDP 0X2C +#define IXGBE_PACKET_TYPE_IPV4_IPV6 0X05 +#define IXGBE_PACKET_TYPE_IPV4_IPV6_TCP 0X15 +#define IXGBE_PACKET_TYPE_IPV4_IPV6_UDP 0X25 +#define IXGBE_PACKET_TYPE_IPV4_IPV6_EXT 0X0D +#define IXGBE_PACKET_TYPE_IPV4_IPV6_EXT_TCP 0X1D +#define IXGBE_PACKET_TYPE_IPV4_IPV6_EXT_UDP 0X2D + +#define IXGBE_PACKET_TYPE_NVGRE 0X00 +#define IXGBE_PACKET_TYPE_NVGRE_IPV4 0X01 +#define IXGBE_PACKET_TYPE_NVGRE_IPV4_TCP 0X11 +#define IXGBE_PACKET_TYPE_NVGRE_IPV4_UDP 0X21 +#define IXGBE_PACKET_TYPE_NVGRE_IPV4_SCTP 0X41 +#define IXGBE_PACKET_TYPE_NVGRE_IPV4_EXT 0X03 +#define IXGBE_PACKET_TYPE_NVGRE_IPV4_EXT_SCTP 0X43 +#define IXGBE_PACKET_TYPE_NVGRE_IPV6 0X04 +#define IXGBE_PACKET_TYPE_NVGRE_IPV6_TCP 0X14 +#define IXGBE_PACKET_TYPE_NVGRE_IPV6_UDP 0X24 +#define IXGBE_PACKET_TYPE_NVGRE_IPV6_EXT 0X0C +#define IXGBE_PACKET_TYPE_NVGRE_IPV6_EXT_TCP 0X1C +#define IXGBE_PACKET_TYPE_NVGRE_IPV6_EXT_UDP 0X2C +#define IXGBE_PACKET_TYPE_NVGRE_IPV4_IPV6 0X05 +#define IXGBE_PACKET_TYPE_NVGRE_IPV4_IPV6_TCP 0X15 +#define IXGBE_PACKET_TYPE_NVGRE_IPV4_IPV6_UDP 0X25 +#define IXGBE_PACKET_TYPE_NVGRE_IPV4_IPV6_EXT 0X0D +#define IXGBE_PACKET_TYPE_NVGRE_IPV4_IPV6_EXT_TCP 0X1D +#define IXGBE_PACKET_TYPE_NVGRE_IPV4_IPV6_EXT_UDP 0X2D + +#define IXGBE_PACKET_TYPE_VXLAN 0X80 +#define IXGBE_PACKET_TYPE_VXLAN_IPV4 0X81 +#define IXGBE_PACKET_TYPE_VXLAN_IPV4_TCP 0x91 +#define IXGBE_PACKET_TYPE_VXLAN_IPV4_UDP 0xA1 +#define IXGBE_PACKET_TYPE_VXLAN_IPV4_SCTP 0xC1 +#define IXGBE_PACKET_TYPE_VXLAN_IPV4_EXT 0x83 +#define IXGBE_PACKET_TYPE_VXLAN_IPV4_EXT_SCTP 0XC3 +#define IXGBE_PACKET_TYPE_VXLAN_IPV6 0X84 +#define IXGBE_PACKET_TYPE_VXLAN_IPV6_TCP 0X94 +#define IXGBE_PACKET_TYPE_VXLAN_IPV6_UDP 0XA4 +#define IXGBE_PACKET_TYPE_VXLAN_IPV6_EXT 0X8C +#define IXGBE_PACKET_TYPE_VXLAN_IPV6_EXT_TCP 0X9C +#define IXGBE_PACKET_TYPE_VXLAN_IPV6_EXT_UDP 0XAC +#define IXGBE_PACKET_TYPE_VXLAN_IPV4_IPV6 0X85 +#define IXGBE_PACKET_TYPE_VXLAN_IPV4_IPV6_TCP 0X95 +#define IXGBE_PACKET_TYPE_VXLAN_IPV4_IPV6_UDP 0XA5 +#define IXGBE_PACKET_TYPE_VXLAN_IPV4_IPV6_EXT 0X8D +#define IXGBE_PACKET_TYPE_VXLAN_IPV4_IPV6_EXT_TCP 0X9D +#define IXGBE_PACKET_TYPE_VXLAN_IPV4_IPV6_EXT_UDP 0XAD + +#define IXGBE_PACKET_TYPE_MAX 0X80 +#define IXGBE_PACKET_TYPE_TN_MAX 0X100 +#define IXGBE_PACKET_TYPE_SHIFT 0X04 + +/* @note: fix ixgbe_dev_supported_ptypes_get() if any change here. */ +static inline uint32_t +ixgbe_rxd_pkt_info_to_pkt_type(uint32_t pkt_info, uint16_t ptype_mask) +{ + /** + * Use 2 different table for normal packet and tunnel packet + * to save the space. + */ + static const uint32_t + ptype_table[IXGBE_PACKET_TYPE_MAX] __rte_cache_aligned = { + [IXGBE_PACKET_TYPE_IPV4] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4, + [IXGBE_PACKET_TYPE_IPV4_EXT] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT, + [IXGBE_PACKET_TYPE_IPV6] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV6, + [IXGBE_PACKET_TYPE_IPV4_IPV6] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_IP | + RTE_PTYPE_INNER_L3_IPV6, + [IXGBE_PACKET_TYPE_IPV6_EXT] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV6_EXT, + [IXGBE_PACKET_TYPE_IPV4_IPV6_EXT] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_IP | + RTE_PTYPE_INNER_L3_IPV6_EXT, + [IXGBE_PACKET_TYPE_IPV4_TCP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_TCP, + [IXGBE_PACKET_TYPE_IPV6_TCP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_TCP, + [IXGBE_PACKET_TYPE_IPV4_IPV6_TCP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_IP | + RTE_PTYPE_INNER_L3_IPV6 | RTE_PTYPE_INNER_L4_TCP, + [IXGBE_PACKET_TYPE_IPV6_EXT_TCP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_TCP, + [IXGBE_PACKET_TYPE_IPV4_IPV6_EXT_TCP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_IP | + RTE_PTYPE_INNER_L3_IPV6_EXT | RTE_PTYPE_INNER_L4_TCP, + [IXGBE_PACKET_TYPE_IPV4_UDP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_UDP, + [IXGBE_PACKET_TYPE_IPV6_UDP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP, + [IXGBE_PACKET_TYPE_IPV4_IPV6_UDP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_IP | + RTE_PTYPE_INNER_L3_IPV6 | RTE_PTYPE_INNER_L4_UDP, + [IXGBE_PACKET_TYPE_IPV6_EXT_UDP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_UDP, + [IXGBE_PACKET_TYPE_IPV4_IPV6_EXT_UDP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_IP | + RTE_PTYPE_INNER_L3_IPV6_EXT | RTE_PTYPE_INNER_L4_UDP, + [IXGBE_PACKET_TYPE_IPV4_SCTP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_SCTP, + [IXGBE_PACKET_TYPE_IPV4_EXT_SCTP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_SCTP, + }; + + static const uint32_t + ptype_table_tn[IXGBE_PACKET_TYPE_TN_MAX] __rte_cache_aligned = { + [IXGBE_PACKET_TYPE_NVGRE] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_TUNNEL_GRE | + RTE_PTYPE_INNER_L2_ETHER, + [IXGBE_PACKET_TYPE_NVGRE_IPV4] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_TUNNEL_GRE | + RTE_PTYPE_INNER_L2_ETHER | RTE_PTYPE_INNER_L3_IPV4, + [IXGBE_PACKET_TYPE_NVGRE_IPV4_EXT] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_TUNNEL_GRE | + RTE_PTYPE_INNER_L2_ETHER | RTE_PTYPE_INNER_L3_IPV4_EXT, + [IXGBE_PACKET_TYPE_NVGRE_IPV6] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_TUNNEL_GRE | + RTE_PTYPE_INNER_L2_ETHER | RTE_PTYPE_INNER_L3_IPV6, + [IXGBE_PACKET_TYPE_NVGRE_IPV4_IPV6] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_TUNNEL_GRE | + RTE_PTYPE_INNER_L2_ETHER | RTE_PTYPE_INNER_L3_IPV4, + [IXGBE_PACKET_TYPE_NVGRE_IPV6_EXT] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_TUNNEL_GRE | + RTE_PTYPE_INNER_L2_ETHER | RTE_PTYPE_INNER_L3_IPV6_EXT, + [IXGBE_PACKET_TYPE_NVGRE_IPV4_IPV6_EXT] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_TUNNEL_GRE | + RTE_PTYPE_INNER_L2_ETHER | RTE_PTYPE_INNER_L3_IPV4, + [IXGBE_PACKET_TYPE_NVGRE_IPV4_TCP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_TUNNEL_GRE | + RTE_PTYPE_INNER_L2_ETHER | RTE_PTYPE_INNER_L3_IPV4 | + RTE_PTYPE_INNER_L4_TCP, + [IXGBE_PACKET_TYPE_NVGRE_IPV6_TCP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_TUNNEL_GRE | + RTE_PTYPE_INNER_L2_ETHER | RTE_PTYPE_INNER_L3_IPV6 | + RTE_PTYPE_INNER_L4_TCP, + [IXGBE_PACKET_TYPE_NVGRE_IPV4_IPV6_TCP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_TUNNEL_GRE | + RTE_PTYPE_INNER_L2_ETHER | RTE_PTYPE_INNER_L3_IPV4, + [IXGBE_PACKET_TYPE_NVGRE_IPV6_EXT_TCP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_TUNNEL_GRE | + RTE_PTYPE_INNER_L2_ETHER | RTE_PTYPE_INNER_L3_IPV6_EXT | + RTE_PTYPE_INNER_L4_TCP, + [IXGBE_PACKET_TYPE_NVGRE_IPV4_IPV6_EXT_TCP] = + RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | + RTE_PTYPE_TUNNEL_GRE | RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV4, + [IXGBE_PACKET_TYPE_NVGRE_IPV4_UDP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_TUNNEL_GRE | + RTE_PTYPE_INNER_L2_ETHER | RTE_PTYPE_INNER_L3_IPV4 | + RTE_PTYPE_INNER_L4_UDP, + [IXGBE_PACKET_TYPE_NVGRE_IPV6_UDP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_TUNNEL_GRE | + RTE_PTYPE_INNER_L2_ETHER | RTE_PTYPE_INNER_L3_IPV6 | + RTE_PTYPE_INNER_L4_UDP, + [IXGBE_PACKET_TYPE_NVGRE_IPV4_IPV6_UDP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_TUNNEL_GRE | + RTE_PTYPE_INNER_L2_ETHER | RTE_PTYPE_INNER_L3_IPV4, + [IXGBE_PACKET_TYPE_NVGRE_IPV6_EXT_UDP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_TUNNEL_GRE | + RTE_PTYPE_INNER_L2_ETHER | RTE_PTYPE_INNER_L3_IPV6_EXT | + RTE_PTYPE_INNER_L4_UDP, + [IXGBE_PACKET_TYPE_NVGRE_IPV4_IPV6_EXT_UDP] = + RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | + RTE_PTYPE_TUNNEL_GRE | RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV4, + [IXGBE_PACKET_TYPE_NVGRE_IPV4_SCTP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_TUNNEL_GRE | + RTE_PTYPE_INNER_L2_ETHER | RTE_PTYPE_INNER_L3_IPV4 | + RTE_PTYPE_INNER_L4_SCTP, + [IXGBE_PACKET_TYPE_NVGRE_IPV4_EXT_SCTP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_TUNNEL_GRE | + RTE_PTYPE_INNER_L2_ETHER | RTE_PTYPE_INNER_L3_IPV4_EXT | + RTE_PTYPE_INNER_L4_SCTP, + + [IXGBE_PACKET_TYPE_VXLAN] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_INNER_L2_ETHER, + [IXGBE_PACKET_TYPE_VXLAN_IPV4] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV4, + [IXGBE_PACKET_TYPE_VXLAN_IPV4_EXT] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV4_EXT, + [IXGBE_PACKET_TYPE_VXLAN_IPV6] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV6, + [IXGBE_PACKET_TYPE_VXLAN_IPV4_IPV6] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV4, + [IXGBE_PACKET_TYPE_VXLAN_IPV6_EXT] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV6_EXT, + [IXGBE_PACKET_TYPE_VXLAN_IPV4_IPV6_EXT] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV4, + [IXGBE_PACKET_TYPE_VXLAN_IPV4_TCP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV4 | RTE_PTYPE_INNER_L4_TCP, + [IXGBE_PACKET_TYPE_VXLAN_IPV6_TCP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV6 | RTE_PTYPE_INNER_L4_TCP, + [IXGBE_PACKET_TYPE_VXLAN_IPV4_IPV6_TCP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV4, + [IXGBE_PACKET_TYPE_VXLAN_IPV6_EXT_TCP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV6_EXT | RTE_PTYPE_INNER_L4_TCP, + [IXGBE_PACKET_TYPE_VXLAN_IPV4_IPV6_EXT_TCP] = + RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | + RTE_PTYPE_L4_UDP | RTE_PTYPE_TUNNEL_VXLAN | + RTE_PTYPE_INNER_L2_ETHER | RTE_PTYPE_INNER_L3_IPV4, + [IXGBE_PACKET_TYPE_VXLAN_IPV4_UDP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV4 | RTE_PTYPE_INNER_L4_UDP, + [IXGBE_PACKET_TYPE_VXLAN_IPV6_UDP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV6 | RTE_PTYPE_INNER_L4_UDP, + [IXGBE_PACKET_TYPE_VXLAN_IPV4_IPV6_UDP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV4, + [IXGBE_PACKET_TYPE_VXLAN_IPV6_EXT_UDP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV6_EXT | RTE_PTYPE_INNER_L4_UDP, + [IXGBE_PACKET_TYPE_VXLAN_IPV4_IPV6_EXT_UDP] = + RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | + RTE_PTYPE_L4_UDP | RTE_PTYPE_TUNNEL_VXLAN | + RTE_PTYPE_INNER_L2_ETHER | RTE_PTYPE_INNER_L3_IPV4, + [IXGBE_PACKET_TYPE_VXLAN_IPV4_SCTP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV4 | RTE_PTYPE_INNER_L4_SCTP, + [IXGBE_PACKET_TYPE_VXLAN_IPV4_EXT_SCTP] = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT_UNKNOWN | RTE_PTYPE_L4_UDP | + RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_INNER_L2_ETHER | + RTE_PTYPE_INNER_L3_IPV4_EXT | RTE_PTYPE_INNER_L4_SCTP, + }; + + if (unlikely(pkt_info & IXGBE_RXDADV_PKTTYPE_ETQF)) + return RTE_PTYPE_UNKNOWN; + + pkt_info = (pkt_info >> IXGBE_PACKET_TYPE_SHIFT) & ptype_mask; + + /* For tunnel packet */ + if (pkt_info & IXGBE_PACKET_TYPE_TUNNEL_BIT) { + /* Remove the tunnel bit to save the space. */ + pkt_info &= IXGBE_PACKET_TYPE_MASK_TUNNEL; + return ptype_table_tn[pkt_info]; + } + + /** + * For x550, if it's not tunnel, + * tunnel type bit should be set to 0. + * Reuse 82599's mask. + */ + pkt_info &= IXGBE_PACKET_TYPE_MASK_82599; + + return ptype_table[pkt_info]; +} + +static inline uint64_t +ixgbe_rxd_pkt_info_to_pkt_flags(uint16_t pkt_info) +{ + static uint64_t ip_rss_types_map[16] __rte_cache_aligned = { + 0, PKT_RX_RSS_HASH, PKT_RX_RSS_HASH, PKT_RX_RSS_HASH, + 0, PKT_RX_RSS_HASH, 0, PKT_RX_RSS_HASH, + PKT_RX_RSS_HASH, 0, 0, 0, + 0, 0, 0, PKT_RX_FDIR, + }; +#ifdef RTE_LIBRTE_IEEE1588 + static uint64_t ip_pkt_etqf_map[8] = { + 0, 0, 0, PKT_RX_IEEE1588_PTP, + 0, 0, 0, 0, + }; + + if (likely(pkt_info & IXGBE_RXDADV_PKTTYPE_ETQF)) + return ip_pkt_etqf_map[(pkt_info >> 4) & 0X07] | + ip_rss_types_map[pkt_info & 0XF]; + else + return ip_rss_types_map[pkt_info & 0XF]; +#else + return ip_rss_types_map[pkt_info & 0XF]; +#endif +} + +static inline uint64_t +rx_desc_status_to_pkt_flags(uint32_t rx_status) +{ + uint64_t pkt_flags; + + /* + * Check if VLAN present only. + * Do not check whether L3/L4 rx checksum done by NIC or not, + * That can be found from rte_eth_rxmode.hw_ip_checksum flag + */ + pkt_flags = (rx_status & IXGBE_RXD_STAT_VP) ? PKT_RX_VLAN_PKT : 0; + +#ifdef RTE_LIBRTE_IEEE1588 + if (rx_status & IXGBE_RXD_STAT_TMST) + pkt_flags = pkt_flags | PKT_RX_IEEE1588_TMST; +#endif + return pkt_flags; +} + +static inline uint64_t +rx_desc_error_to_pkt_flags(uint32_t rx_status) +{ + uint64_t pkt_flags; + + /* + * Bit 31: IPE, IPv4 checksum error + * Bit 30: L4I, L4I integrity error + */ + static uint64_t error_to_pkt_flags_map[4] = { + 0, PKT_RX_L4_CKSUM_BAD, PKT_RX_IP_CKSUM_BAD, + PKT_RX_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD + }; + pkt_flags = error_to_pkt_flags_map[(rx_status >> + IXGBE_RXDADV_ERR_CKSUM_BIT) & IXGBE_RXDADV_ERR_CKSUM_MSK]; + + if ((rx_status & IXGBE_RXD_STAT_OUTERIPCS) && + (rx_status & IXGBE_RXDADV_ERR_OUTERIPER)) { + pkt_flags |= PKT_RX_EIP_CKSUM_BAD; + } + + return pkt_flags; +} + +/* + * LOOK_AHEAD defines how many desc statuses to check beyond the + * current descriptor. + * It must be a pound define for optimal performance. + * Do not change the value of LOOK_AHEAD, as the ixgbe_rx_scan_hw_ring + * function only works with LOOK_AHEAD=8. + */ +#define LOOK_AHEAD 8 +#if (LOOK_AHEAD != 8) +#error "PMD IXGBE: LOOK_AHEAD must be 8\n" +#endif +static inline int +ixgbe_rx_scan_hw_ring(struct ixgbe_rx_queue *rxq) +{ + volatile union ixgbe_adv_rx_desc *rxdp; + struct ixgbe_rx_entry *rxep; + struct rte_mbuf *mb; + uint16_t pkt_len; + uint64_t pkt_flags; + int nb_dd; + uint32_t s[LOOK_AHEAD]; + uint32_t pkt_info[LOOK_AHEAD]; + int i, j, nb_rx = 0; + uint32_t status; + + /* get references to current descriptor and S/W ring entry */ + rxdp = &rxq->rx_ring[rxq->rx_tail]; + rxep = &rxq->sw_ring[rxq->rx_tail]; + + status = rxdp->wb.upper.status_error; + /* check to make sure there is at least 1 packet to receive */ + if (!(status & rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD))) + return 0; + + /* + * Scan LOOK_AHEAD descriptors at a time to determine which descriptors + * reference packets that are ready to be received. + */ + for (i = 0; i < RTE_PMD_IXGBE_RX_MAX_BURST; + i += LOOK_AHEAD, rxdp += LOOK_AHEAD, rxep += LOOK_AHEAD) + { + /* Read desc statuses backwards to avoid race condition */ + for (j = LOOK_AHEAD-1; j >= 0; --j) + s[j] = rte_le_to_cpu_32(rxdp[j].wb.upper.status_error); + + for (j = LOOK_AHEAD - 1; j >= 0; --j) + pkt_info[j] = rte_le_to_cpu_32(rxdp[j].wb.lower. + lo_dword.data); + + /* Compute how many status bits were set */ + nb_dd = 0; + for (j = 0; j < LOOK_AHEAD; ++j) + nb_dd += s[j] & IXGBE_RXDADV_STAT_DD; + + nb_rx += nb_dd; + + /* Translate descriptor info to mbuf format */ + for (j = 0; j < nb_dd; ++j) { + mb = rxep[j].mbuf; + pkt_len = rte_le_to_cpu_16(rxdp[j].wb.upper.length) - + rxq->crc_len; + mb->data_len = pkt_len; + mb->pkt_len = pkt_len; + mb->vlan_tci = rte_le_to_cpu_16(rxdp[j].wb.upper.vlan); + + /* convert descriptor fields to rte mbuf flags */ + pkt_flags = rx_desc_status_to_pkt_flags(s[j]); + pkt_flags |= rx_desc_error_to_pkt_flags(s[j]); + pkt_flags |= ixgbe_rxd_pkt_info_to_pkt_flags + ((uint16_t)pkt_info[j]); + mb->ol_flags = pkt_flags; + mb->packet_type = + ixgbe_rxd_pkt_info_to_pkt_type + (pkt_info[j], rxq->pkt_type_mask); + + if (likely(pkt_flags & PKT_RX_RSS_HASH)) + mb->hash.rss = rte_le_to_cpu_32( + rxdp[j].wb.lower.hi_dword.rss); + else if (pkt_flags & PKT_RX_FDIR) { + mb->hash.fdir.hash = rte_le_to_cpu_16( + rxdp[j].wb.lower.hi_dword.csum_ip.csum) & + IXGBE_ATR_HASH_MASK; + mb->hash.fdir.id = rte_le_to_cpu_16( + rxdp[j].wb.lower.hi_dword.csum_ip.ip_id); + } + } + + /* Move mbuf pointers from the S/W ring to the stage */ + for (j = 0; j < LOOK_AHEAD; ++j) { + rxq->rx_stage[i + j] = rxep[j].mbuf; + } + + /* stop if all requested packets could not be received */ + if (nb_dd != LOOK_AHEAD) + break; + } + + /* clear software ring entries so we can cleanup correctly */ + for (i = 0; i < nb_rx; ++i) { + rxq->sw_ring[rxq->rx_tail + i].mbuf = NULL; + } + + + return nb_rx; +} + +static inline int +ixgbe_rx_alloc_bufs(struct ixgbe_rx_queue *rxq, bool reset_mbuf) +{ + volatile union ixgbe_adv_rx_desc *rxdp; + struct ixgbe_rx_entry *rxep; + struct rte_mbuf *mb; + uint16_t alloc_idx; + __le64 dma_addr; + int diag, i; + + /* allocate buffers in bulk directly into the S/W ring */ + alloc_idx = rxq->rx_free_trigger - (rxq->rx_free_thresh - 1); + rxep = &rxq->sw_ring[alloc_idx]; + diag = rte_mempool_get_bulk(rxq->mb_pool, (void *)rxep, + rxq->rx_free_thresh); + if (unlikely(diag != 0)) + return -ENOMEM; + + rxdp = &rxq->rx_ring[alloc_idx]; + for (i = 0; i < rxq->rx_free_thresh; ++i) { + /* populate the static rte mbuf fields */ + mb = rxep[i].mbuf; + if (reset_mbuf) { + mb->next = NULL; + mb->nb_segs = 1; + mb->port = rxq->port_id; + } + + rte_mbuf_refcnt_set(mb, 1); + mb->data_off = RTE_PKTMBUF_HEADROOM; + + /* populate the descriptors */ + dma_addr = rte_cpu_to_le_64(rte_mbuf_data_dma_addr_default(mb)); + rxdp[i].read.hdr_addr = 0; + rxdp[i].read.pkt_addr = dma_addr; + } + + /* update state of internal queue structure */ + rxq->rx_free_trigger = rxq->rx_free_trigger + rxq->rx_free_thresh; + if (rxq->rx_free_trigger >= rxq->nb_rx_desc) + rxq->rx_free_trigger = rxq->rx_free_thresh - 1; + + /* no errors */ + return 0; +} + +static inline uint16_t +ixgbe_rx_fill_from_stage(struct ixgbe_rx_queue *rxq, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) +{ + struct rte_mbuf **stage = &rxq->rx_stage[rxq->rx_next_avail]; + int i; + + /* how many packets are ready to return? */ + nb_pkts = (uint16_t)RTE_MIN(nb_pkts, rxq->rx_nb_avail); + + /* copy mbuf pointers to the application's packet list */ + for (i = 0; i < nb_pkts; ++i) + rx_pkts[i] = stage[i]; + + /* update internal queue state */ + rxq->rx_nb_avail = (uint16_t)(rxq->rx_nb_avail - nb_pkts); + rxq->rx_next_avail = (uint16_t)(rxq->rx_next_avail + nb_pkts); + + return nb_pkts; +} + +static inline uint16_t +rx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) +{ + struct ixgbe_rx_queue *rxq = (struct ixgbe_rx_queue *)rx_queue; + uint16_t nb_rx = 0; + + /* Any previously recv'd pkts will be returned from the Rx stage */ + if (rxq->rx_nb_avail) + return ixgbe_rx_fill_from_stage(rxq, rx_pkts, nb_pkts); + + /* Scan the H/W ring for packets to receive */ + nb_rx = (uint16_t)ixgbe_rx_scan_hw_ring(rxq); + + /* update internal queue state */ + rxq->rx_next_avail = 0; + rxq->rx_nb_avail = nb_rx; + rxq->rx_tail = (uint16_t)(rxq->rx_tail + nb_rx); + + /* if required, allocate new buffers to replenish descriptors */ + if (rxq->rx_tail > rxq->rx_free_trigger) { + uint16_t cur_free_trigger = rxq->rx_free_trigger; + + if (ixgbe_rx_alloc_bufs(rxq, true) != 0) { + int i, j; + PMD_RX_LOG(DEBUG, "RX mbuf alloc failed port_id=%u " + "queue_id=%u", (unsigned) rxq->port_id, + (unsigned) rxq->queue_id); + + rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed += + rxq->rx_free_thresh; + + /* + * Need to rewind any previous receives if we cannot + * allocate new buffers to replenish the old ones. + */ + rxq->rx_nb_avail = 0; + rxq->rx_tail = (uint16_t)(rxq->rx_tail - nb_rx); + for (i = 0, j = rxq->rx_tail; i < nb_rx; ++i, ++j) + rxq->sw_ring[j].mbuf = rxq->rx_stage[i]; + + return 0; + } + + /* update tail pointer */ + rte_wmb(); + IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, cur_free_trigger); + } + + if (rxq->rx_tail >= rxq->nb_rx_desc) + rxq->rx_tail = 0; + + /* received any packets this loop? */ + if (rxq->rx_nb_avail) + return ixgbe_rx_fill_from_stage(rxq, rx_pkts, nb_pkts); + + return 0; +} + +/* split requests into chunks of size RTE_PMD_IXGBE_RX_MAX_BURST */ +uint16_t +ixgbe_recv_pkts_bulk_alloc(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) +{ + uint16_t nb_rx; + + if (unlikely(nb_pkts == 0)) + return 0; + + if (likely(nb_pkts <= RTE_PMD_IXGBE_RX_MAX_BURST)) + return rx_recv_pkts(rx_queue, rx_pkts, nb_pkts); + + /* request is relatively large, chunk it up */ + nb_rx = 0; + while (nb_pkts) { + uint16_t ret, n; + n = (uint16_t)RTE_MIN(nb_pkts, RTE_PMD_IXGBE_RX_MAX_BURST); + ret = rx_recv_pkts(rx_queue, &rx_pkts[nb_rx], n); + nb_rx = (uint16_t)(nb_rx + ret); + nb_pkts = (uint16_t)(nb_pkts - ret); + if (ret < n) + break; + } + + return nb_rx; +} + +uint16_t +ixgbe_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) +{ + struct ixgbe_rx_queue *rxq; + volatile union ixgbe_adv_rx_desc *rx_ring; + volatile union ixgbe_adv_rx_desc *rxdp; + struct ixgbe_rx_entry *sw_ring; + struct ixgbe_rx_entry *rxe; + struct rte_mbuf *rxm; + struct rte_mbuf *nmb; + union ixgbe_adv_rx_desc rxd; + uint64_t dma_addr; + uint32_t staterr; + uint32_t pkt_info; + uint16_t pkt_len; + uint16_t rx_id; + uint16_t nb_rx; + uint16_t nb_hold; + uint64_t pkt_flags; + + nb_rx = 0; + nb_hold = 0; + rxq = rx_queue; + rx_id = rxq->rx_tail; + rx_ring = rxq->rx_ring; + sw_ring = rxq->sw_ring; + while (nb_rx < nb_pkts) { + /* + * The order of operations here is important as the DD status + * bit must not be read after any other descriptor fields. + * rx_ring and rxdp are pointing to volatile data so the order + * of accesses cannot be reordered by the compiler. If they were + * not volatile, they could be reordered which could lead to + * using invalid descriptor fields when read from rxd. + */ + rxdp = &rx_ring[rx_id]; + staterr = rxdp->wb.upper.status_error; + if (!(staterr & rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD))) + break; + rxd = *rxdp; + + /* + * End of packet. + * + * If the IXGBE_RXDADV_STAT_EOP flag is not set, the RX packet + * is likely to be invalid and to be dropped by the various + * validation checks performed by the network stack. + * + * Allocate a new mbuf to replenish the RX ring descriptor. + * If the allocation fails: + * - arrange for that RX descriptor to be the first one + * being parsed the next time the receive function is + * invoked [on the same queue]. + * + * - Stop parsing the RX ring and return immediately. + * + * This policy do not drop the packet received in the RX + * descriptor for which the allocation of a new mbuf failed. + * Thus, it allows that packet to be later retrieved if + * mbuf have been freed in the mean time. + * As a side effect, holding RX descriptors instead of + * systematically giving them back to the NIC may lead to + * RX ring exhaustion situations. + * However, the NIC can gracefully prevent such situations + * to happen by sending specific "back-pressure" flow control + * frames to its peer(s). + */ + PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_id=%u " + "ext_err_stat=0x%08x pkt_len=%u", + (unsigned) rxq->port_id, (unsigned) rxq->queue_id, + (unsigned) rx_id, (unsigned) staterr, + (unsigned) rte_le_to_cpu_16(rxd.wb.upper.length)); + + nmb = rte_rxmbuf_alloc(rxq->mb_pool); + if (nmb == NULL) { + PMD_RX_LOG(DEBUG, "RX mbuf alloc failed port_id=%u " + "queue_id=%u", (unsigned) rxq->port_id, + (unsigned) rxq->queue_id); + rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed++; + break; + } + + nb_hold++; + rxe = &sw_ring[rx_id]; + rx_id++; + if (rx_id == rxq->nb_rx_desc) + rx_id = 0; + + /* Prefetch next mbuf while processing current one. */ + rte_ixgbe_prefetch(sw_ring[rx_id].mbuf); + + /* + * When next RX descriptor is on a cache-line boundary, + * prefetch the next 4 RX descriptors and the next 8 pointers + * to mbufs. + */ + if ((rx_id & 0x3) == 0) { + rte_ixgbe_prefetch(&rx_ring[rx_id]); + rte_ixgbe_prefetch(&sw_ring[rx_id]); + } + + rxm = rxe->mbuf; + rxe->mbuf = nmb; + dma_addr = + rte_cpu_to_le_64(rte_mbuf_data_dma_addr_default(nmb)); + rxdp->read.hdr_addr = 0; + rxdp->read.pkt_addr = dma_addr; + + /* + * Initialize the returned mbuf. + * 1) setup generic mbuf fields: + * - number of segments, + * - next segment, + * - packet length, + * - RX port identifier. + * 2) integrate hardware offload data, if any: + * - RSS flag & hash, + * - IP checksum flag, + * - VLAN TCI, if any, + * - error flags. + */ + pkt_len = (uint16_t) (rte_le_to_cpu_16(rxd.wb.upper.length) - + rxq->crc_len); + rxm->data_off = RTE_PKTMBUF_HEADROOM; + rte_packet_prefetch((char *)rxm->buf_addr + rxm->data_off); + rxm->nb_segs = 1; + rxm->next = NULL; + rxm->pkt_len = pkt_len; + rxm->data_len = pkt_len; + rxm->port = rxq->port_id; + + pkt_info = rte_le_to_cpu_32(rxd.wb.lower.lo_dword.data); + /* Only valid if PKT_RX_VLAN_PKT set in pkt_flags */ + rxm->vlan_tci = rte_le_to_cpu_16(rxd.wb.upper.vlan); + + pkt_flags = rx_desc_status_to_pkt_flags(staterr); + pkt_flags = pkt_flags | rx_desc_error_to_pkt_flags(staterr); + pkt_flags = pkt_flags | + ixgbe_rxd_pkt_info_to_pkt_flags((uint16_t)pkt_info); + rxm->ol_flags = pkt_flags; + rxm->packet_type = + ixgbe_rxd_pkt_info_to_pkt_type(pkt_info, + rxq->pkt_type_mask); + + if (likely(pkt_flags & PKT_RX_RSS_HASH)) + rxm->hash.rss = rte_le_to_cpu_32( + rxd.wb.lower.hi_dword.rss); + else if (pkt_flags & PKT_RX_FDIR) { + rxm->hash.fdir.hash = rte_le_to_cpu_16( + rxd.wb.lower.hi_dword.csum_ip.csum) & + IXGBE_ATR_HASH_MASK; + rxm->hash.fdir.id = rte_le_to_cpu_16( + rxd.wb.lower.hi_dword.csum_ip.ip_id); + } + /* + * Store the mbuf address into the next entry of the array + * of returned packets. + */ + rx_pkts[nb_rx++] = rxm; + } + rxq->rx_tail = rx_id; + + /* + * If the number of free RX descriptors is greater than the RX free + * threshold of the queue, advance the Receive Descriptor Tail (RDT) + * register. + * Update the RDT with the value of the last processed RX descriptor + * minus 1, to guarantee that the RDT register is never equal to the + * RDH register, which creates a "full" ring situtation from the + * hardware point of view... + */ + nb_hold = (uint16_t) (nb_hold + rxq->nb_rx_hold); + if (nb_hold > rxq->rx_free_thresh) { + PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_tail=%u " + "nb_hold=%u nb_rx=%u", + (unsigned) rxq->port_id, (unsigned) rxq->queue_id, + (unsigned) rx_id, (unsigned) nb_hold, + (unsigned) nb_rx); + rx_id = (uint16_t) ((rx_id == 0) ? + (rxq->nb_rx_desc - 1) : (rx_id - 1)); + IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, rx_id); + nb_hold = 0; + } + rxq->nb_rx_hold = nb_hold; + return nb_rx; +} + +/** + * Detect an RSC descriptor. + */ +static inline uint32_t +ixgbe_rsc_count(union ixgbe_adv_rx_desc *rx) +{ + return (rte_le_to_cpu_32(rx->wb.lower.lo_dword.data) & + IXGBE_RXDADV_RSCCNT_MASK) >> IXGBE_RXDADV_RSCCNT_SHIFT; +} + +/** + * ixgbe_fill_cluster_head_buf - fill the first mbuf of the returned packet + * + * Fill the following info in the HEAD buffer of the Rx cluster: + * - RX port identifier + * - hardware offload data, if any: + * - RSS flag & hash + * - IP checksum flag + * - VLAN TCI, if any + * - error flags + * @head HEAD of the packet cluster + * @desc HW descriptor to get data from + * @rxq Pointer to the Rx queue + */ +static inline void +ixgbe_fill_cluster_head_buf( + struct rte_mbuf *head, + union ixgbe_adv_rx_desc *desc, + struct ixgbe_rx_queue *rxq, + uint32_t staterr) +{ + uint32_t pkt_info; + uint64_t pkt_flags; + + head->port = rxq->port_id; + + /* The vlan_tci field is only valid when PKT_RX_VLAN_PKT is + * set in the pkt_flags field. + */ + head->vlan_tci = rte_le_to_cpu_16(desc->wb.upper.vlan); + pkt_info = rte_le_to_cpu_32(desc->wb.lower.lo_dword.data); + pkt_flags = rx_desc_status_to_pkt_flags(staterr); + pkt_flags |= rx_desc_error_to_pkt_flags(staterr); + pkt_flags |= ixgbe_rxd_pkt_info_to_pkt_flags((uint16_t)pkt_info); + head->ol_flags = pkt_flags; + head->packet_type = + ixgbe_rxd_pkt_info_to_pkt_type(pkt_info, rxq->pkt_type_mask); + + if (likely(pkt_flags & PKT_RX_RSS_HASH)) + head->hash.rss = rte_le_to_cpu_32(desc->wb.lower.hi_dword.rss); + else if (pkt_flags & PKT_RX_FDIR) { + head->hash.fdir.hash = + rte_le_to_cpu_16(desc->wb.lower.hi_dword.csum_ip.csum) + & IXGBE_ATR_HASH_MASK; + head->hash.fdir.id = + rte_le_to_cpu_16(desc->wb.lower.hi_dword.csum_ip.ip_id); + } +} + +/** + * ixgbe_recv_pkts_lro - receive handler for and LRO case. + * + * @rx_queue Rx queue handle + * @rx_pkts table of received packets + * @nb_pkts size of rx_pkts table + * @bulk_alloc if TRUE bulk allocation is used for a HW ring refilling + * + * Handles the Rx HW ring completions when RSC feature is configured. Uses an + * additional ring of ixgbe_rsc_entry's that will hold the relevant RSC info. + * + * We use the same logic as in Linux and in FreeBSD ixgbe drivers: + * 1) When non-EOP RSC completion arrives: + * a) Update the HEAD of the current RSC aggregation cluster with the new + * segment's data length. + * b) Set the "next" pointer of the current segment to point to the segment + * at the NEXTP index. + * c) Pass the HEAD of RSC aggregation cluster on to the next NEXTP entry + * in the sw_rsc_ring. + * 2) When EOP arrives we just update the cluster's total length and offload + * flags and deliver the cluster up to the upper layers. In our case - put it + * in the rx_pkts table. + * + * Returns the number of received packets/clusters (according to the "bulk + * receive" interface). + */ +static inline uint16_t +ixgbe_recv_pkts_lro(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts, + bool bulk_alloc) +{ + struct ixgbe_rx_queue *rxq = rx_queue; + volatile union ixgbe_adv_rx_desc *rx_ring = rxq->rx_ring; + struct ixgbe_rx_entry *sw_ring = rxq->sw_ring; + struct ixgbe_scattered_rx_entry *sw_sc_ring = rxq->sw_sc_ring; + uint16_t rx_id = rxq->rx_tail; + uint16_t nb_rx = 0; + uint16_t nb_hold = rxq->nb_rx_hold; + uint16_t prev_id = rxq->rx_tail; + + while (nb_rx < nb_pkts) { + bool eop; + struct ixgbe_rx_entry *rxe; + struct ixgbe_scattered_rx_entry *sc_entry; + struct ixgbe_scattered_rx_entry *next_sc_entry; + struct ixgbe_rx_entry *next_rxe = NULL; + struct rte_mbuf *first_seg; + struct rte_mbuf *rxm; + struct rte_mbuf *nmb; + union ixgbe_adv_rx_desc rxd; + uint16_t data_len; + uint16_t next_id; + volatile union ixgbe_adv_rx_desc *rxdp; + uint32_t staterr; + +next_desc: + /* + * The code in this whole file uses the volatile pointer to + * ensure the read ordering of the status and the rest of the + * descriptor fields (on the compiler level only!!!). This is so + * UGLY - why not to just use the compiler barrier instead? DPDK + * even has the rte_compiler_barrier() for that. + * + * But most importantly this is just wrong because this doesn't + * ensure memory ordering in a general case at all. For + * instance, DPDK is supposed to work on Power CPUs where + * compiler barrier may just not be enough! + * + * I tried to write only this function properly to have a + * starting point (as a part of an LRO/RSC series) but the + * compiler cursed at me when I tried to cast away the + * "volatile" from rx_ring (yes, it's volatile too!!!). So, I'm + * keeping it the way it is for now. + * + * The code in this file is broken in so many other places and + * will just not work on a big endian CPU anyway therefore the + * lines below will have to be revisited together with the rest + * of the ixgbe PMD. + * + * TODO: + * - Get rid of "volatile" crap and let the compiler do its + * job. + * - Use the proper memory barrier (rte_rmb()) to ensure the + * memory ordering below. + */ + rxdp = &rx_ring[rx_id]; + staterr = rte_le_to_cpu_32(rxdp->wb.upper.status_error); + + if (!(staterr & IXGBE_RXDADV_STAT_DD)) + break; + + rxd = *rxdp; + + PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_id=%u " + "staterr=0x%x data_len=%u", + rxq->port_id, rxq->queue_id, rx_id, staterr, + rte_le_to_cpu_16(rxd.wb.upper.length)); + + if (!bulk_alloc) { + nmb = rte_rxmbuf_alloc(rxq->mb_pool); + if (nmb == NULL) { + PMD_RX_LOG(DEBUG, "RX mbuf alloc failed " + "port_id=%u queue_id=%u", + rxq->port_id, rxq->queue_id); + + rte_eth_devices[rxq->port_id].data-> + rx_mbuf_alloc_failed++; + break; + } + } + else if (nb_hold > rxq->rx_free_thresh) { + uint16_t next_rdt = rxq->rx_free_trigger; + + if (!ixgbe_rx_alloc_bufs(rxq, false)) { + rte_wmb(); + IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, + next_rdt); + nb_hold -= rxq->rx_free_thresh; + } else { + PMD_RX_LOG(DEBUG, "RX bulk alloc failed " + "port_id=%u queue_id=%u", + rxq->port_id, rxq->queue_id); + + rte_eth_devices[rxq->port_id].data-> + rx_mbuf_alloc_failed++; + break; + } + } + + nb_hold++; + rxe = &sw_ring[rx_id]; + eop = staterr & IXGBE_RXDADV_STAT_EOP; + + next_id = rx_id + 1; + if (next_id == rxq->nb_rx_desc) + next_id = 0; + + /* Prefetch next mbuf while processing current one. */ + rte_ixgbe_prefetch(sw_ring[next_id].mbuf); + + /* + * When next RX descriptor is on a cache-line boundary, + * prefetch the next 4 RX descriptors and the next 4 pointers + * to mbufs. + */ + if ((next_id & 0x3) == 0) { + rte_ixgbe_prefetch(&rx_ring[next_id]); + rte_ixgbe_prefetch(&sw_ring[next_id]); + } + + rxm = rxe->mbuf; + + if (!bulk_alloc) { + __le64 dma = + rte_cpu_to_le_64(rte_mbuf_data_dma_addr_default(nmb)); + /* + * Update RX descriptor with the physical address of the + * new data buffer of the new allocated mbuf. + */ + rxe->mbuf = nmb; + + rxm->data_off = RTE_PKTMBUF_HEADROOM; + rxdp->read.hdr_addr = 0; + rxdp->read.pkt_addr = dma; + } else + rxe->mbuf = NULL; + + /* + * Set data length & data buffer address of mbuf. + */ + data_len = rte_le_to_cpu_16(rxd.wb.upper.length); + rxm->data_len = data_len; + + if (!eop) { + uint16_t nextp_id; + /* + * Get next descriptor index: + * - For RSC it's in the NEXTP field. + * - For a scattered packet - it's just a following + * descriptor. + */ + if (ixgbe_rsc_count(&rxd)) + nextp_id = + (staterr & IXGBE_RXDADV_NEXTP_MASK) >> + IXGBE_RXDADV_NEXTP_SHIFT; + else + nextp_id = next_id; + + next_sc_entry = &sw_sc_ring[nextp_id]; + next_rxe = &sw_ring[nextp_id]; + rte_ixgbe_prefetch(next_rxe); + } + + sc_entry = &sw_sc_ring[rx_id]; + first_seg = sc_entry->fbuf; + sc_entry->fbuf = NULL; + + /* + * If this is the first buffer of the received packet, + * set the pointer to the first mbuf of the packet and + * initialize its context. + * Otherwise, update the total length and the number of segments + * of the current scattered packet, and update the pointer to + * the last mbuf of the current packet. + */ + if (first_seg == NULL) { + first_seg = rxm; + first_seg->pkt_len = data_len; + first_seg->nb_segs = 1; + } else { + first_seg->pkt_len += data_len; + first_seg->nb_segs++; + } + + prev_id = rx_id; + rx_id = next_id; + + /* + * If this is not the last buffer of the received packet, update + * the pointer to the first mbuf at the NEXTP entry in the + * sw_sc_ring and continue to parse the RX ring. + */ + if (!eop && next_rxe) { + rxm->next = next_rxe->mbuf; + next_sc_entry->fbuf = first_seg; + goto next_desc; + } + + /* + * This is the last buffer of the received packet - return + * the current cluster to the user. + */ + rxm->next = NULL; + + /* Initialize the first mbuf of the returned packet */ + ixgbe_fill_cluster_head_buf(first_seg, &rxd, rxq, staterr); + + /* + * Deal with the case, when HW CRC srip is disabled. + * That can't happen when LRO is enabled, but still could + * happen for scattered RX mode. + */ + first_seg->pkt_len -= rxq->crc_len; + if (unlikely(rxm->data_len <= rxq->crc_len)) { + struct rte_mbuf *lp; + + for (lp = first_seg; lp->next != rxm; lp = lp->next) + ; + + first_seg->nb_segs--; + lp->data_len -= rxq->crc_len - rxm->data_len; + lp->next = NULL; + rte_pktmbuf_free_seg(rxm); + } else + rxm->data_len -= rxq->crc_len; + + /* Prefetch data of first segment, if configured to do so. */ + rte_packet_prefetch((char *)first_seg->buf_addr + + first_seg->data_off); + + /* + * Store the mbuf address into the next entry of the array + * of returned packets. + */ + rx_pkts[nb_rx++] = first_seg; + } + + /* + * Record index of the next RX descriptor to probe. + */ + rxq->rx_tail = rx_id; + + /* + * If the number of free RX descriptors is greater than the RX free + * threshold of the queue, advance the Receive Descriptor Tail (RDT) + * register. + * Update the RDT with the value of the last processed RX descriptor + * minus 1, to guarantee that the RDT register is never equal to the + * RDH register, which creates a "full" ring situtation from the + * hardware point of view... + */ + if (!bulk_alloc && nb_hold > rxq->rx_free_thresh) { + PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_tail=%u " + "nb_hold=%u nb_rx=%u", + rxq->port_id, rxq->queue_id, rx_id, nb_hold, nb_rx); + + rte_wmb(); + IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, prev_id); + nb_hold = 0; + } + + rxq->nb_rx_hold = nb_hold; + return nb_rx; +} + +uint16_t +ixgbe_recv_pkts_lro_single_alloc(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) +{ + return ixgbe_recv_pkts_lro(rx_queue, rx_pkts, nb_pkts, false); +} + +uint16_t +ixgbe_recv_pkts_lro_bulk_alloc(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) +{ + return ixgbe_recv_pkts_lro(rx_queue, rx_pkts, nb_pkts, true); +} + +/********************************************************************* + * + * Queue management functions + * + **********************************************************************/ + +static void __attribute__((cold)) +ixgbe_tx_queue_release_mbufs(struct ixgbe_tx_queue *txq) +{ + unsigned i; + + if (txq->sw_ring != NULL) { + for (i = 0; i < txq->nb_tx_desc; i++) { + if (txq->sw_ring[i].mbuf != NULL) { + rte_pktmbuf_free_seg(txq->sw_ring[i].mbuf); + txq->sw_ring[i].mbuf = NULL; + } + } + } +} + +static void __attribute__((cold)) +ixgbe_tx_free_swring(struct ixgbe_tx_queue *txq) +{ + if (txq != NULL && + txq->sw_ring != NULL) + rte_free(txq->sw_ring); +} + +static void __attribute__((cold)) +ixgbe_tx_queue_release(struct ixgbe_tx_queue *txq) +{ + if (txq != NULL && txq->ops != NULL) { + txq->ops->release_mbufs(txq); + txq->ops->free_swring(txq); + rte_free(txq); + } +} + +void __attribute__((cold)) +ixgbe_dev_tx_queue_release(void *txq) +{ + ixgbe_tx_queue_release(txq); +} + +/* (Re)set dynamic ixgbe_tx_queue fields to defaults */ +static void __attribute__((cold)) +ixgbe_reset_tx_queue(struct ixgbe_tx_queue *txq) +{ + static const union ixgbe_adv_tx_desc zeroed_desc = {{0}}; + struct ixgbe_tx_entry *txe = txq->sw_ring; + uint16_t prev, i; + + /* Zero out HW ring memory */ + for (i = 0; i < txq->nb_tx_desc; i++) { + txq->tx_ring[i] = zeroed_desc; + } + + /* Initialize SW ring entries */ + prev = (uint16_t) (txq->nb_tx_desc - 1); + for (i = 0; i < txq->nb_tx_desc; i++) { + volatile union ixgbe_adv_tx_desc *txd = &txq->tx_ring[i]; + txd->wb.status = rte_cpu_to_le_32(IXGBE_TXD_STAT_DD); + txe[i].mbuf = NULL; + txe[i].last_id = i; + txe[prev].next_id = i; + prev = i; + } + + txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1); + txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1); + + txq->tx_tail = 0; + txq->nb_tx_used = 0; + /* + * Always allow 1 descriptor to be un-allocated to avoid + * a H/W race condition + */ + txq->last_desc_cleaned = (uint16_t)(txq->nb_tx_desc - 1); + txq->nb_tx_free = (uint16_t)(txq->nb_tx_desc - 1); + txq->ctx_curr = 0; + memset((void*)&txq->ctx_cache, 0, + IXGBE_CTX_NUM * sizeof(struct ixgbe_advctx_info)); +} + +static const struct ixgbe_txq_ops def_txq_ops = { + .release_mbufs = ixgbe_tx_queue_release_mbufs, + .free_swring = ixgbe_tx_free_swring, + .reset = ixgbe_reset_tx_queue, +}; + +/* Takes an ethdev and a queue and sets up the tx function to be used based on + * the queue parameters. Used in tx_queue_setup by primary process and then + * in dev_init by secondary process when attaching to an existing ethdev. + */ +void __attribute__((cold)) +ixgbe_set_tx_function(struct rte_eth_dev *dev, struct ixgbe_tx_queue *txq) +{ + /* Use a simple Tx queue (no offloads, no multi segs) if possible */ + if (((txq->txq_flags & IXGBE_SIMPLE_FLAGS) == IXGBE_SIMPLE_FLAGS) + && (txq->tx_rs_thresh >= RTE_PMD_IXGBE_TX_MAX_BURST)) { + PMD_INIT_LOG(DEBUG, "Using simple tx code path"); +#ifdef RTE_IXGBE_INC_VECTOR + if (txq->tx_rs_thresh <= RTE_IXGBE_TX_MAX_FREE_BUF_SZ && + (rte_eal_process_type() != RTE_PROC_PRIMARY || + ixgbe_txq_vec_setup(txq) == 0)) { + PMD_INIT_LOG(DEBUG, "Vector tx enabled."); + dev->tx_pkt_burst = ixgbe_xmit_pkts_vec; + } else +#endif + dev->tx_pkt_burst = ixgbe_xmit_pkts_simple; + } else { + PMD_INIT_LOG(DEBUG, "Using full-featured tx code path"); + PMD_INIT_LOG(DEBUG, + " - txq_flags = %lx " "[IXGBE_SIMPLE_FLAGS=%lx]", + (unsigned long)txq->txq_flags, + (unsigned long)IXGBE_SIMPLE_FLAGS); + PMD_INIT_LOG(DEBUG, + " - tx_rs_thresh = %lu " "[RTE_PMD_IXGBE_TX_MAX_BURST=%lu]", + (unsigned long)txq->tx_rs_thresh, + (unsigned long)RTE_PMD_IXGBE_TX_MAX_BURST); + dev->tx_pkt_burst = ixgbe_xmit_pkts; + } +} + +int __attribute__((cold)) +ixgbe_dev_tx_queue_setup(struct rte_eth_dev *dev, + uint16_t queue_idx, + uint16_t nb_desc, + unsigned int socket_id, + const struct rte_eth_txconf *tx_conf) +{ + const struct rte_memzone *tz; + struct ixgbe_tx_queue *txq; + struct ixgbe_hw *hw; + uint16_t tx_rs_thresh, tx_free_thresh; + + PMD_INIT_FUNC_TRACE(); + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + /* + * Validate number of transmit descriptors. + * It must not exceed hardware maximum, and must be multiple + * of IXGBE_ALIGN. + */ + if (nb_desc % IXGBE_TXD_ALIGN != 0 || + (nb_desc > IXGBE_MAX_RING_DESC) || + (nb_desc < IXGBE_MIN_RING_DESC)) { + return -EINVAL; + } + + /* + * The following two parameters control the setting of the RS bit on + * transmit descriptors. + * TX descriptors will have their RS bit set after txq->tx_rs_thresh + * descriptors have been used. + * The TX descriptor ring will be cleaned after txq->tx_free_thresh + * descriptors are used or if the number of descriptors required + * to transmit a packet is greater than the number of free TX + * descriptors. + * The following constraints must be satisfied: + * tx_rs_thresh must be greater than 0. + * tx_rs_thresh must be less than the size of the ring minus 2. + * tx_rs_thresh must be less than or equal to tx_free_thresh. + * tx_rs_thresh must be a divisor of the ring size. + * tx_free_thresh must be greater than 0. + * tx_free_thresh must be less than the size of the ring minus 3. + * One descriptor in the TX ring is used as a sentinel to avoid a + * H/W race condition, hence the maximum threshold constraints. + * When set to zero use default values. + */ + tx_rs_thresh = (uint16_t)((tx_conf->tx_rs_thresh) ? + tx_conf->tx_rs_thresh : DEFAULT_TX_RS_THRESH); + tx_free_thresh = (uint16_t)((tx_conf->tx_free_thresh) ? + tx_conf->tx_free_thresh : DEFAULT_TX_FREE_THRESH); + if (tx_rs_thresh >= (nb_desc - 2)) { + PMD_INIT_LOG(ERR, "tx_rs_thresh must be less than the number " + "of TX descriptors minus 2. (tx_rs_thresh=%u " + "port=%d queue=%d)", (unsigned int)tx_rs_thresh, + (int)dev->data->port_id, (int)queue_idx); + return -(EINVAL); + } + if (tx_rs_thresh > DEFAULT_TX_RS_THRESH) { + PMD_INIT_LOG(ERR, "tx_rs_thresh must be less or equal than %u. " + "(tx_rs_thresh=%u port=%d queue=%d)", + DEFAULT_TX_RS_THRESH, (unsigned int)tx_rs_thresh, + (int)dev->data->port_id, (int)queue_idx); + return -(EINVAL); + } + if (tx_free_thresh >= (nb_desc - 3)) { + PMD_INIT_LOG(ERR, "tx_rs_thresh must be less than the " + "tx_free_thresh must be less than the number of " + "TX descriptors minus 3. (tx_free_thresh=%u " + "port=%d queue=%d)", + (unsigned int)tx_free_thresh, + (int)dev->data->port_id, (int)queue_idx); + return -(EINVAL); + } + if (tx_rs_thresh > tx_free_thresh) { + PMD_INIT_LOG(ERR, "tx_rs_thresh must be less than or equal to " + "tx_free_thresh. (tx_free_thresh=%u " + "tx_rs_thresh=%u port=%d queue=%d)", + (unsigned int)tx_free_thresh, + (unsigned int)tx_rs_thresh, + (int)dev->data->port_id, + (int)queue_idx); + return -(EINVAL); + } + if ((nb_desc % tx_rs_thresh) != 0) { + PMD_INIT_LOG(ERR, "tx_rs_thresh must be a divisor of the " + "number of TX descriptors. (tx_rs_thresh=%u " + "port=%d queue=%d)", (unsigned int)tx_rs_thresh, + (int)dev->data->port_id, (int)queue_idx); + return -(EINVAL); + } + + /* + * If rs_bit_thresh is greater than 1, then TX WTHRESH should be + * set to 0. If WTHRESH is greater than zero, the RS bit is ignored + * by the NIC and all descriptors are written back after the NIC + * accumulates WTHRESH descriptors. + */ + if ((tx_rs_thresh > 1) && (tx_conf->tx_thresh.wthresh != 0)) { + PMD_INIT_LOG(ERR, "TX WTHRESH must be set to 0 if " + "tx_rs_thresh is greater than 1. (tx_rs_thresh=%u " + "port=%d queue=%d)", (unsigned int)tx_rs_thresh, + (int)dev->data->port_id, (int)queue_idx); + return -(EINVAL); + } + + /* Free memory prior to re-allocation if needed... */ + if (dev->data->tx_queues[queue_idx] != NULL) { + ixgbe_tx_queue_release(dev->data->tx_queues[queue_idx]); + dev->data->tx_queues[queue_idx] = NULL; + } + + /* First allocate the tx queue data structure */ + txq = rte_zmalloc_socket("ethdev TX queue", sizeof(struct ixgbe_tx_queue), + RTE_CACHE_LINE_SIZE, socket_id); + if (txq == NULL) + return -ENOMEM; + + /* + * Allocate TX ring hardware descriptors. A memzone large enough to + * handle the maximum ring size is allocated in order to allow for + * resizing in later calls to the queue setup function. + */ + tz = rte_eth_dma_zone_reserve(dev, "tx_ring", queue_idx, + sizeof(union ixgbe_adv_tx_desc) * IXGBE_MAX_RING_DESC, + IXGBE_ALIGN, socket_id); + if (tz == NULL) { + ixgbe_tx_queue_release(txq); + return -ENOMEM; + } + + txq->nb_tx_desc = nb_desc; + txq->tx_rs_thresh = tx_rs_thresh; + txq->tx_free_thresh = tx_free_thresh; + txq->pthresh = tx_conf->tx_thresh.pthresh; + txq->hthresh = tx_conf->tx_thresh.hthresh; + txq->wthresh = tx_conf->tx_thresh.wthresh; + txq->queue_id = queue_idx; + txq->reg_idx = (uint16_t)((RTE_ETH_DEV_SRIOV(dev).active == 0) ? + queue_idx : RTE_ETH_DEV_SRIOV(dev).def_pool_q_idx + queue_idx); + txq->port_id = dev->data->port_id; + txq->txq_flags = tx_conf->txq_flags; + txq->ops = &def_txq_ops; + txq->tx_deferred_start = tx_conf->tx_deferred_start; + + /* + * Modification to set VFTDT for virtual function if vf is detected + */ + if (hw->mac.type == ixgbe_mac_82599_vf || + hw->mac.type == ixgbe_mac_X540_vf || + hw->mac.type == ixgbe_mac_X550_vf || + hw->mac.type == ixgbe_mac_X550EM_x_vf || + hw->mac.type == ixgbe_mac_X550EM_a_vf) + txq->tdt_reg_addr = IXGBE_PCI_REG_ADDR(hw, IXGBE_VFTDT(queue_idx)); + else + txq->tdt_reg_addr = IXGBE_PCI_REG_ADDR(hw, IXGBE_TDT(txq->reg_idx)); + + txq->tx_ring_phys_addr = rte_mem_phy2mch(tz->memseg_id, tz->phys_addr); + txq->tx_ring = (union ixgbe_adv_tx_desc *) tz->addr; + + /* Allocate software ring */ + txq->sw_ring = rte_zmalloc_socket("txq->sw_ring", + sizeof(struct ixgbe_tx_entry) * nb_desc, + RTE_CACHE_LINE_SIZE, socket_id); + if (txq->sw_ring == NULL) { + ixgbe_tx_queue_release(txq); + return -ENOMEM; + } + PMD_INIT_LOG(DEBUG, "sw_ring=%p hw_ring=%p dma_addr=0x%"PRIx64, + txq->sw_ring, txq->tx_ring, txq->tx_ring_phys_addr); + + /* set up vector or scalar TX function as appropriate */ + ixgbe_set_tx_function(dev, txq); + + txq->ops->reset(txq); + + dev->data->tx_queues[queue_idx] = txq; + + + return 0; +} + +/** + * ixgbe_free_sc_cluster - free the not-yet-completed scattered cluster + * + * The "next" pointer of the last segment of (not-yet-completed) RSC clusters + * in the sw_rsc_ring is not set to NULL but rather points to the next + * mbuf of this RSC aggregation (that has not been completed yet and still + * resides on the HW ring). So, instead of calling for rte_pktmbuf_free() we + * will just free first "nb_segs" segments of the cluster explicitly by calling + * an rte_pktmbuf_free_seg(). + * + * @m scattered cluster head + */ +static void __attribute__((cold)) +ixgbe_free_sc_cluster(struct rte_mbuf *m) +{ + uint8_t i, nb_segs = m->nb_segs; + struct rte_mbuf *next_seg; + + for (i = 0; i < nb_segs; i++) { + next_seg = m->next; + rte_pktmbuf_free_seg(m); + m = next_seg; + } +} + +static void __attribute__((cold)) +ixgbe_rx_queue_release_mbufs(struct ixgbe_rx_queue *rxq) +{ + unsigned i; + +#ifdef RTE_IXGBE_INC_VECTOR + /* SSE Vector driver has a different way of releasing mbufs. */ + if (rxq->rx_using_sse) { + ixgbe_rx_queue_release_mbufs_vec(rxq); + return; + } +#endif + + if (rxq->sw_ring != NULL) { + for (i = 0; i < rxq->nb_rx_desc; i++) { + if (rxq->sw_ring[i].mbuf != NULL) { + rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf); + rxq->sw_ring[i].mbuf = NULL; + } + } + if (rxq->rx_nb_avail) { + for (i = 0; i < rxq->rx_nb_avail; ++i) { + struct rte_mbuf *mb; + mb = rxq->rx_stage[rxq->rx_next_avail + i]; + rte_pktmbuf_free_seg(mb); + } + rxq->rx_nb_avail = 0; + } + } + + if (rxq->sw_sc_ring) + for (i = 0; i < rxq->nb_rx_desc; i++) + if (rxq->sw_sc_ring[i].fbuf) { + ixgbe_free_sc_cluster(rxq->sw_sc_ring[i].fbuf); + rxq->sw_sc_ring[i].fbuf = NULL; + } +} + +static void __attribute__((cold)) +ixgbe_rx_queue_release(struct ixgbe_rx_queue *rxq) +{ + if (rxq != NULL) { + ixgbe_rx_queue_release_mbufs(rxq); + rte_free(rxq->sw_ring); + rte_free(rxq->sw_sc_ring); + rte_free(rxq); + } +} + +void __attribute__((cold)) +ixgbe_dev_rx_queue_release(void *rxq) +{ + ixgbe_rx_queue_release(rxq); +} + +/* + * Check if Rx Burst Bulk Alloc function can be used. + * Return + * 0: the preconditions are satisfied and the bulk allocation function + * can be used. + * -EINVAL: the preconditions are NOT satisfied and the default Rx burst + * function must be used. + */ +static inline int __attribute__((cold)) +check_rx_burst_bulk_alloc_preconditions(struct ixgbe_rx_queue *rxq) +{ + int ret = 0; + + /* + * Make sure the following pre-conditions are satisfied: + * rxq->rx_free_thresh >= RTE_PMD_IXGBE_RX_MAX_BURST + * rxq->rx_free_thresh < rxq->nb_rx_desc + * (rxq->nb_rx_desc % rxq->rx_free_thresh) == 0 + * rxq->nb_rx_desc<(IXGBE_MAX_RING_DESC-RTE_PMD_IXGBE_RX_MAX_BURST) + * Scattered packets are not supported. This should be checked + * outside of this function. + */ + if (!(rxq->rx_free_thresh >= RTE_PMD_IXGBE_RX_MAX_BURST)) { + PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: " + "rxq->rx_free_thresh=%d, " + "RTE_PMD_IXGBE_RX_MAX_BURST=%d", + rxq->rx_free_thresh, RTE_PMD_IXGBE_RX_MAX_BURST); + ret = -EINVAL; + } else if (!(rxq->rx_free_thresh < rxq->nb_rx_desc)) { + PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: " + "rxq->rx_free_thresh=%d, " + "rxq->nb_rx_desc=%d", + rxq->rx_free_thresh, rxq->nb_rx_desc); + ret = -EINVAL; + } else if (!((rxq->nb_rx_desc % rxq->rx_free_thresh) == 0)) { + PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: " + "rxq->nb_rx_desc=%d, " + "rxq->rx_free_thresh=%d", + rxq->nb_rx_desc, rxq->rx_free_thresh); + ret = -EINVAL; + } else if (!(rxq->nb_rx_desc < + (IXGBE_MAX_RING_DESC - RTE_PMD_IXGBE_RX_MAX_BURST))) { + PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: " + "rxq->nb_rx_desc=%d, " + "IXGBE_MAX_RING_DESC=%d, " + "RTE_PMD_IXGBE_RX_MAX_BURST=%d", + rxq->nb_rx_desc, IXGBE_MAX_RING_DESC, + RTE_PMD_IXGBE_RX_MAX_BURST); + ret = -EINVAL; + } + + return ret; +} + +/* Reset dynamic ixgbe_rx_queue fields back to defaults */ +static void __attribute__((cold)) +ixgbe_reset_rx_queue(struct ixgbe_adapter *adapter, struct ixgbe_rx_queue *rxq) +{ + static const union ixgbe_adv_rx_desc zeroed_desc = {{0}}; + unsigned i; + uint16_t len = rxq->nb_rx_desc; + + /* + * By default, the Rx queue setup function allocates enough memory for + * IXGBE_MAX_RING_DESC. The Rx Burst bulk allocation function requires + * extra memory at the end of the descriptor ring to be zero'd out. A + * pre-condition for using the Rx burst bulk alloc function is that the + * number of descriptors is less than or equal to + * (IXGBE_MAX_RING_DESC - RTE_PMD_IXGBE_RX_MAX_BURST). Check all the + * constraints here to see if we need to zero out memory after the end + * of the H/W descriptor ring. + */ + if (adapter->rx_bulk_alloc_allowed) + /* zero out extra memory */ + len += RTE_PMD_IXGBE_RX_MAX_BURST; + + /* + * Zero out HW ring memory. Zero out extra memory at the end of + * the H/W ring so look-ahead logic in Rx Burst bulk alloc function + * reads extra memory as zeros. + */ + for (i = 0; i < len; i++) { + rxq->rx_ring[i] = zeroed_desc; + } + + /* + * initialize extra software ring entries. Space for these extra + * entries is always allocated + */ + memset(&rxq->fake_mbuf, 0x0, sizeof(rxq->fake_mbuf)); + for (i = rxq->nb_rx_desc; i < len; ++i) { + rxq->sw_ring[i].mbuf = &rxq->fake_mbuf; + } + + rxq->rx_nb_avail = 0; + rxq->rx_next_avail = 0; + rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_thresh - 1); + rxq->rx_tail = 0; + rxq->nb_rx_hold = 0; + rxq->pkt_first_seg = NULL; + rxq->pkt_last_seg = NULL; + +#ifdef RTE_IXGBE_INC_VECTOR + rxq->rxrearm_start = 0; + rxq->rxrearm_nb = 0; +#endif +} + +int __attribute__((cold)) +ixgbe_dev_rx_queue_setup(struct rte_eth_dev *dev, + uint16_t queue_idx, + uint16_t nb_desc, + unsigned int socket_id, + const struct rte_eth_rxconf *rx_conf, + struct rte_mempool *mp) +{ + const struct rte_memzone *rz; + struct ixgbe_rx_queue *rxq; + struct ixgbe_hw *hw; + uint16_t len; + struct ixgbe_adapter *adapter = + (struct ixgbe_adapter *)dev->data->dev_private; + + PMD_INIT_FUNC_TRACE(); + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + /* + * Validate number of receive descriptors. + * It must not exceed hardware maximum, and must be multiple + * of IXGBE_ALIGN. + */ + if (nb_desc % IXGBE_RXD_ALIGN != 0 || + (nb_desc > IXGBE_MAX_RING_DESC) || + (nb_desc < IXGBE_MIN_RING_DESC)) { + return -EINVAL; + } + + /* Free memory prior to re-allocation if needed... */ + if (dev->data->rx_queues[queue_idx] != NULL) { + ixgbe_rx_queue_release(dev->data->rx_queues[queue_idx]); + dev->data->rx_queues[queue_idx] = NULL; + } + + /* First allocate the rx queue data structure */ + rxq = rte_zmalloc_socket("ethdev RX queue", sizeof(struct ixgbe_rx_queue), + RTE_CACHE_LINE_SIZE, socket_id); + if (rxq == NULL) + return -ENOMEM; + rxq->mb_pool = mp; + rxq->nb_rx_desc = nb_desc; + rxq->rx_free_thresh = rx_conf->rx_free_thresh; + rxq->queue_id = queue_idx; + rxq->reg_idx = (uint16_t)((RTE_ETH_DEV_SRIOV(dev).active == 0) ? + queue_idx : RTE_ETH_DEV_SRIOV(dev).def_pool_q_idx + queue_idx); + rxq->port_id = dev->data->port_id; + rxq->crc_len = (uint8_t) ((dev->data->dev_conf.rxmode.hw_strip_crc) ? + 0 : ETHER_CRC_LEN); + rxq->drop_en = rx_conf->rx_drop_en; + rxq->rx_deferred_start = rx_conf->rx_deferred_start; + + /* + * The packet type in RX descriptor is different for different NICs. + * Some bits are used for x550 but reserved for other NICS. + * So set different masks for different NICs. + */ + if (hw->mac.type == ixgbe_mac_X550 || + hw->mac.type == ixgbe_mac_X550EM_x || + hw->mac.type == ixgbe_mac_X550EM_a || + hw->mac.type == ixgbe_mac_X550_vf || + hw->mac.type == ixgbe_mac_X550EM_x_vf || + hw->mac.type == ixgbe_mac_X550EM_a_vf) + rxq->pkt_type_mask = IXGBE_PACKET_TYPE_MASK_X550; + else + rxq->pkt_type_mask = IXGBE_PACKET_TYPE_MASK_82599; + + /* + * Allocate RX ring hardware descriptors. A memzone large enough to + * handle the maximum ring size is allocated in order to allow for + * resizing in later calls to the queue setup function. + */ + rz = rte_eth_dma_zone_reserve(dev, "rx_ring", queue_idx, + RX_RING_SZ, IXGBE_ALIGN, socket_id); + if (rz == NULL) { + ixgbe_rx_queue_release(rxq); + return -ENOMEM; + } + + /* + * Zero init all the descriptors in the ring. + */ + memset (rz->addr, 0, RX_RING_SZ); + + /* + * Modified to setup VFRDT for Virtual Function + */ + if (hw->mac.type == ixgbe_mac_82599_vf || + hw->mac.type == ixgbe_mac_X540_vf || + hw->mac.type == ixgbe_mac_X550_vf || + hw->mac.type == ixgbe_mac_X550EM_x_vf || + hw->mac.type == ixgbe_mac_X550EM_a_vf) { + rxq->rdt_reg_addr = + IXGBE_PCI_REG_ADDR(hw, IXGBE_VFRDT(queue_idx)); + rxq->rdh_reg_addr = + IXGBE_PCI_REG_ADDR(hw, IXGBE_VFRDH(queue_idx)); + } + else { + rxq->rdt_reg_addr = + IXGBE_PCI_REG_ADDR(hw, IXGBE_RDT(rxq->reg_idx)); + rxq->rdh_reg_addr = + IXGBE_PCI_REG_ADDR(hw, IXGBE_RDH(rxq->reg_idx)); + } + + rxq->rx_ring_phys_addr = rte_mem_phy2mch(rz->memseg_id, rz->phys_addr); + rxq->rx_ring = (union ixgbe_adv_rx_desc *) rz->addr; + + /* + * Certain constraints must be met in order to use the bulk buffer + * allocation Rx burst function. If any of Rx queues doesn't meet them + * the feature should be disabled for the whole port. + */ + if (check_rx_burst_bulk_alloc_preconditions(rxq)) { + PMD_INIT_LOG(DEBUG, "queue[%d] doesn't meet Rx Bulk Alloc " + "preconditions - canceling the feature for " + "the whole port[%d]", + rxq->queue_id, rxq->port_id); + adapter->rx_bulk_alloc_allowed = false; + } + + /* + * Allocate software ring. Allow for space at the end of the + * S/W ring to make sure look-ahead logic in bulk alloc Rx burst + * function does not access an invalid memory region. + */ + len = nb_desc; + if (adapter->rx_bulk_alloc_allowed) + len += RTE_PMD_IXGBE_RX_MAX_BURST; + + rxq->sw_ring = rte_zmalloc_socket("rxq->sw_ring", + sizeof(struct ixgbe_rx_entry) * len, + RTE_CACHE_LINE_SIZE, socket_id); + if (!rxq->sw_ring) { + ixgbe_rx_queue_release(rxq); + return -ENOMEM; + } + + /* + * Always allocate even if it's not going to be needed in order to + * simplify the code. + * + * This ring is used in LRO and Scattered Rx cases and Scattered Rx may + * be requested in ixgbe_dev_rx_init(), which is called later from + * dev_start() flow. + */ + rxq->sw_sc_ring = + rte_zmalloc_socket("rxq->sw_sc_ring", + sizeof(struct ixgbe_scattered_rx_entry) * len, + RTE_CACHE_LINE_SIZE, socket_id); + if (!rxq->sw_sc_ring) { + ixgbe_rx_queue_release(rxq); + return -ENOMEM; + } + + PMD_INIT_LOG(DEBUG, "sw_ring=%p sw_sc_ring=%p hw_ring=%p " + "dma_addr=0x%"PRIx64, + rxq->sw_ring, rxq->sw_sc_ring, rxq->rx_ring, + rxq->rx_ring_phys_addr); + + if (!rte_is_power_of_2(nb_desc)) { + PMD_INIT_LOG(DEBUG, "queue[%d] doesn't meet Vector Rx " + "preconditions - canceling the feature for " + "the whole port[%d]", + rxq->queue_id, rxq->port_id); + adapter->rx_vec_allowed = false; + } else + ixgbe_rxq_vec_setup(rxq); + + dev->data->rx_queues[queue_idx] = rxq; + + ixgbe_reset_rx_queue(adapter, rxq); + + return 0; +} + +uint32_t +ixgbe_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id) +{ +#define IXGBE_RXQ_SCAN_INTERVAL 4 + volatile union ixgbe_adv_rx_desc *rxdp; + struct ixgbe_rx_queue *rxq; + uint32_t desc = 0; + + if (rx_queue_id >= dev->data->nb_rx_queues) { + PMD_RX_LOG(ERR, "Invalid RX queue id=%d", rx_queue_id); + return 0; + } + + rxq = dev->data->rx_queues[rx_queue_id]; + rxdp = &(rxq->rx_ring[rxq->rx_tail]); + + while ((desc < rxq->nb_rx_desc) && + (rxdp->wb.upper.status_error & + rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD))) { + desc += IXGBE_RXQ_SCAN_INTERVAL; + rxdp += IXGBE_RXQ_SCAN_INTERVAL; + if (rxq->rx_tail + desc >= rxq->nb_rx_desc) + rxdp = &(rxq->rx_ring[rxq->rx_tail + + desc - rxq->nb_rx_desc]); + } + + return desc; +} + +int +ixgbe_dev_rx_descriptor_done(void *rx_queue, uint16_t offset) +{ + volatile union ixgbe_adv_rx_desc *rxdp; + struct ixgbe_rx_queue *rxq = rx_queue; + uint32_t desc; + + if (unlikely(offset >= rxq->nb_rx_desc)) + return 0; + desc = rxq->rx_tail + offset; + if (desc >= rxq->nb_rx_desc) + desc -= rxq->nb_rx_desc; + + rxdp = &rxq->rx_ring[desc]; + return !!(rxdp->wb.upper.status_error & + rte_cpu_to_le_32(IXGBE_RXDADV_STAT_DD)); +} + +void __attribute__((cold)) +ixgbe_dev_clear_queues(struct rte_eth_dev *dev) +{ + unsigned i; + struct ixgbe_adapter *adapter = + (struct ixgbe_adapter *)dev->data->dev_private; + + PMD_INIT_FUNC_TRACE(); + + for (i = 0; i < dev->data->nb_tx_queues; i++) { + struct ixgbe_tx_queue *txq = dev->data->tx_queues[i]; + if (txq != NULL) { + txq->ops->release_mbufs(txq); + txq->ops->reset(txq); + } + } + + for (i = 0; i < dev->data->nb_rx_queues; i++) { + struct ixgbe_rx_queue *rxq = dev->data->rx_queues[i]; + if (rxq != NULL) { + ixgbe_rx_queue_release_mbufs(rxq); + ixgbe_reset_rx_queue(adapter, rxq); + } + } +} + +void +ixgbe_dev_free_queues(struct rte_eth_dev *dev) +{ + unsigned i; + + PMD_INIT_FUNC_TRACE(); + + for (i = 0; i < dev->data->nb_rx_queues; i++) { + ixgbe_dev_rx_queue_release(dev->data->rx_queues[i]); + dev->data->rx_queues[i] = NULL; + } + dev->data->nb_rx_queues = 0; + + for (i = 0; i < dev->data->nb_tx_queues; i++) { + ixgbe_dev_tx_queue_release(dev->data->tx_queues[i]); + dev->data->tx_queues[i] = NULL; + } + dev->data->nb_tx_queues = 0; +} + +/********************************************************************* + * + * Device RX/TX init functions + * + **********************************************************************/ + +/** + * Receive Side Scaling (RSS) + * See section 7.1.2.8 in the following document: + * "Intel 82599 10 GbE Controller Datasheet" - Revision 2.1 October 2009 + * + * Principles: + * The source and destination IP addresses of the IP header and the source + * and destination ports of TCP/UDP headers, if any, of received packets are + * hashed against a configurable random key to compute a 32-bit RSS hash result. + * The seven (7) LSBs of the 32-bit hash result are used as an index into a + * 128-entry redirection table (RETA). Each entry of the RETA provides a 3-bit + * RSS output index which is used as the RX queue index where to store the + * received packets. + * The following output is supplied in the RX write-back descriptor: + * - 32-bit result of the Microsoft RSS hash function, + * - 4-bit RSS type field. + */ + +/* + * RSS random key supplied in section 7.1.2.8.3 of the Intel 82599 datasheet. + * Used as the default key. + */ +static uint8_t rss_intel_key[40] = { + 0x6D, 0x5A, 0x56, 0xDA, 0x25, 0x5B, 0x0E, 0xC2, + 0x41, 0x67, 0x25, 0x3D, 0x43, 0xA3, 0x8F, 0xB0, + 0xD0, 0xCA, 0x2B, 0xCB, 0xAE, 0x7B, 0x30, 0xB4, + 0x77, 0xCB, 0x2D, 0xA3, 0x80, 0x30, 0xF2, 0x0C, + 0x6A, 0x42, 0xB7, 0x3B, 0xBE, 0xAC, 0x01, 0xFA, +}; + +static void +ixgbe_rss_disable(struct rte_eth_dev *dev) +{ + struct ixgbe_hw *hw; + uint32_t mrqc; + uint32_t mrqc_reg; + + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + mrqc_reg = ixgbe_mrqc_reg_get(hw->mac.type); + mrqc = IXGBE_READ_REG(hw, mrqc_reg); + mrqc &= ~IXGBE_MRQC_RSSEN; + IXGBE_WRITE_REG(hw, mrqc_reg, mrqc); +} + +static void +ixgbe_hw_rss_hash_set(struct ixgbe_hw *hw, struct rte_eth_rss_conf *rss_conf) +{ + uint8_t *hash_key; + uint32_t mrqc; + uint32_t rss_key; + uint64_t rss_hf; + uint16_t i; + uint32_t mrqc_reg; + uint32_t rssrk_reg; + + mrqc_reg = ixgbe_mrqc_reg_get(hw->mac.type); + rssrk_reg = ixgbe_rssrk_reg_get(hw->mac.type, 0); + + hash_key = rss_conf->rss_key; + if (hash_key != NULL) { + /* Fill in RSS hash key */ + for (i = 0; i < 10; i++) { + rss_key = hash_key[(i * 4)]; + rss_key |= hash_key[(i * 4) + 1] << 8; + rss_key |= hash_key[(i * 4) + 2] << 16; + rss_key |= hash_key[(i * 4) + 3] << 24; + IXGBE_WRITE_REG_ARRAY(hw, rssrk_reg, i, rss_key); + } + } + + /* Set configured hashing protocols in MRQC register */ + rss_hf = rss_conf->rss_hf; + mrqc = IXGBE_MRQC_RSSEN; /* Enable RSS */ + if (rss_hf & ETH_RSS_IPV4) + mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4; + if (rss_hf & ETH_RSS_NONFRAG_IPV4_TCP) + mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4_TCP; + if (rss_hf & ETH_RSS_IPV6) + mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6; + if (rss_hf & ETH_RSS_IPV6_EX) + mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_EX; + if (rss_hf & ETH_RSS_NONFRAG_IPV6_TCP) + mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_TCP; + if (rss_hf & ETH_RSS_IPV6_TCP_EX) + mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_EX_TCP; + if (rss_hf & ETH_RSS_NONFRAG_IPV4_UDP) + mrqc |= IXGBE_MRQC_RSS_FIELD_IPV4_UDP; + if (rss_hf & ETH_RSS_NONFRAG_IPV6_UDP) + mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP; + if (rss_hf & ETH_RSS_IPV6_UDP_EX) + mrqc |= IXGBE_MRQC_RSS_FIELD_IPV6_EX_UDP; + IXGBE_WRITE_REG(hw, mrqc_reg, mrqc); +} + +int +ixgbe_dev_rss_hash_update(struct rte_eth_dev *dev, + struct rte_eth_rss_conf *rss_conf) +{ + struct ixgbe_hw *hw; + uint32_t mrqc; + uint64_t rss_hf; + uint32_t mrqc_reg; + + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + if (!ixgbe_rss_update_sp(hw->mac.type)) { + PMD_DRV_LOG(ERR, "RSS hash update is not supported on this " + "NIC."); + return -ENOTSUP; + } + mrqc_reg = ixgbe_mrqc_reg_get(hw->mac.type); + + /* + * Excerpt from section 7.1.2.8 Receive-Side Scaling (RSS): + * "RSS enabling cannot be done dynamically while it must be + * preceded by a software reset" + * Before changing anything, first check that the update RSS operation + * does not attempt to disable RSS, if RSS was enabled at + * initialization time, or does not attempt to enable RSS, if RSS was + * disabled at initialization time. + */ + rss_hf = rss_conf->rss_hf & IXGBE_RSS_OFFLOAD_ALL; + mrqc = IXGBE_READ_REG(hw, mrqc_reg); + if (!(mrqc & IXGBE_MRQC_RSSEN)) { /* RSS disabled */ + if (rss_hf != 0) /* Enable RSS */ + return -(EINVAL); + return 0; /* Nothing to do */ + } + /* RSS enabled */ + if (rss_hf == 0) /* Disable RSS */ + return -(EINVAL); + ixgbe_hw_rss_hash_set(hw, rss_conf); + return 0; +} + +int +ixgbe_dev_rss_hash_conf_get(struct rte_eth_dev *dev, + struct rte_eth_rss_conf *rss_conf) +{ + struct ixgbe_hw *hw; + uint8_t *hash_key; + uint32_t mrqc; + uint32_t rss_key; + uint64_t rss_hf; + uint16_t i; + uint32_t mrqc_reg; + uint32_t rssrk_reg; + + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + mrqc_reg = ixgbe_mrqc_reg_get(hw->mac.type); + rssrk_reg = ixgbe_rssrk_reg_get(hw->mac.type, 0); + hash_key = rss_conf->rss_key; + if (hash_key != NULL) { + /* Return RSS hash key */ + for (i = 0; i < 10; i++) { + rss_key = IXGBE_READ_REG_ARRAY(hw, rssrk_reg, i); + hash_key[(i * 4)] = rss_key & 0x000000FF; + hash_key[(i * 4) + 1] = (rss_key >> 8) & 0x000000FF; + hash_key[(i * 4) + 2] = (rss_key >> 16) & 0x000000FF; + hash_key[(i * 4) + 3] = (rss_key >> 24) & 0x000000FF; + } + } + + /* Get RSS functions configured in MRQC register */ + mrqc = IXGBE_READ_REG(hw, mrqc_reg); + if ((mrqc & IXGBE_MRQC_RSSEN) == 0) { /* RSS is disabled */ + rss_conf->rss_hf = 0; + return 0; + } + rss_hf = 0; + if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV4) + rss_hf |= ETH_RSS_IPV4; + if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV4_TCP) + rss_hf |= ETH_RSS_NONFRAG_IPV4_TCP; + if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6) + rss_hf |= ETH_RSS_IPV6; + if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_EX) + rss_hf |= ETH_RSS_IPV6_EX; + if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_TCP) + rss_hf |= ETH_RSS_NONFRAG_IPV6_TCP; + if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_EX_TCP) + rss_hf |= ETH_RSS_IPV6_TCP_EX; + if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV4_UDP) + rss_hf |= ETH_RSS_NONFRAG_IPV4_UDP; + if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_UDP) + rss_hf |= ETH_RSS_NONFRAG_IPV6_UDP; + if (mrqc & IXGBE_MRQC_RSS_FIELD_IPV6_EX_UDP) + rss_hf |= ETH_RSS_IPV6_UDP_EX; + rss_conf->rss_hf = rss_hf; + return 0; +} + +static void +ixgbe_rss_configure(struct rte_eth_dev *dev) +{ + struct rte_eth_rss_conf rss_conf; + struct ixgbe_hw *hw; + uint32_t reta; + uint16_t i; + uint16_t j; + uint16_t sp_reta_size; + uint32_t reta_reg; + + PMD_INIT_FUNC_TRACE(); + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + sp_reta_size = ixgbe_reta_size_get(hw->mac.type); + + /* + * Fill in redirection table + * The byte-swap is needed because NIC registers are in + * little-endian order. + */ + reta = 0; + for (i = 0, j = 0; i < sp_reta_size; i++, j++) { + reta_reg = ixgbe_reta_reg_get(hw->mac.type, i); + + if (j == dev->data->nb_rx_queues) + j = 0; + reta = (reta << 8) | j; + if ((i & 3) == 3) + IXGBE_WRITE_REG(hw, reta_reg, + rte_bswap32(reta)); + } + + /* + * Configure the RSS key and the RSS protocols used to compute + * the RSS hash of input packets. + */ + rss_conf = dev->data->dev_conf.rx_adv_conf.rss_conf; + if ((rss_conf.rss_hf & IXGBE_RSS_OFFLOAD_ALL) == 0) { + ixgbe_rss_disable(dev); + return; + } + if (rss_conf.rss_key == NULL) + rss_conf.rss_key = rss_intel_key; /* Default hash key */ + ixgbe_hw_rss_hash_set(hw, &rss_conf); +} + +#define NUM_VFTA_REGISTERS 128 +#define NIC_RX_BUFFER_SIZE 0x200 +#define X550_RX_BUFFER_SIZE 0x180 + +static void +ixgbe_vmdq_dcb_configure(struct rte_eth_dev *dev) +{ + struct rte_eth_vmdq_dcb_conf *cfg; + struct ixgbe_hw *hw; + enum rte_eth_nb_pools num_pools; + uint32_t mrqc, vt_ctl, queue_mapping, vlanctrl; + uint16_t pbsize; + uint8_t nb_tcs; /* number of traffic classes */ + int i; + + PMD_INIT_FUNC_TRACE(); + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + cfg = &dev->data->dev_conf.rx_adv_conf.vmdq_dcb_conf; + num_pools = cfg->nb_queue_pools; + /* Check we have a valid number of pools */ + if (num_pools != ETH_16_POOLS && num_pools != ETH_32_POOLS) { + ixgbe_rss_disable(dev); + return; + } + /* 16 pools -> 8 traffic classes, 32 pools -> 4 traffic classes */ + nb_tcs = (uint8_t)(ETH_VMDQ_DCB_NUM_QUEUES / (int)num_pools); + + /* + * RXPBSIZE + * split rx buffer up into sections, each for 1 traffic class + */ + switch (hw->mac.type) { + case ixgbe_mac_X550: + case ixgbe_mac_X550EM_x: + case ixgbe_mac_X550EM_a: + pbsize = (uint16_t)(X550_RX_BUFFER_SIZE / nb_tcs); + break; + default: + pbsize = (uint16_t)(NIC_RX_BUFFER_SIZE / nb_tcs); + break; + } + for (i = 0; i < nb_tcs; i++) { + uint32_t rxpbsize = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i)); + rxpbsize &= (~(0x3FF << IXGBE_RXPBSIZE_SHIFT)); + /* clear 10 bits. */ + rxpbsize |= (pbsize << IXGBE_RXPBSIZE_SHIFT); /* set value */ + IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpbsize); + } + /* zero alloc all unused TCs */ + for (i = nb_tcs; i < ETH_DCB_NUM_USER_PRIORITIES; i++) { + uint32_t rxpbsize = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i)); + rxpbsize &= (~( 0x3FF << IXGBE_RXPBSIZE_SHIFT )); + /* clear 10 bits. */ + IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpbsize); + } + + /* MRQC: enable vmdq and dcb */ + mrqc = ((num_pools == ETH_16_POOLS) ? \ + IXGBE_MRQC_VMDQRT8TCEN : IXGBE_MRQC_VMDQRT4TCEN ); + IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); + + /* PFVTCTL: turn on virtualisation and set the default pool */ + vt_ctl = IXGBE_VT_CTL_VT_ENABLE | IXGBE_VT_CTL_REPLEN; + if (cfg->enable_default_pool) { + vt_ctl |= (cfg->default_pool << IXGBE_VT_CTL_POOL_SHIFT); + } else { + vt_ctl |= IXGBE_VT_CTL_DIS_DEFPL; + } + + IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vt_ctl); + + /* RTRUP2TC: mapping user priorities to traffic classes (TCs) */ + queue_mapping = 0; + for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) + /* + * mapping is done with 3 bits per priority, + * so shift by i*3 each time + */ + queue_mapping |= ((cfg->dcb_tc[i] & 0x07) << (i * 3)); + + IXGBE_WRITE_REG(hw, IXGBE_RTRUP2TC, queue_mapping); + + /* RTRPCS: DCB related */ + IXGBE_WRITE_REG(hw, IXGBE_RTRPCS, IXGBE_RMCS_RRM); + + /* VLNCTRL: enable vlan filtering and allow all vlan tags through */ + vlanctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); + vlanctrl |= IXGBE_VLNCTRL_VFE; /* enable vlan filters */ + IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlanctrl); + + /* VFTA - enable all vlan filters */ + for (i = 0; i < NUM_VFTA_REGISTERS; i++) { + IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), 0xFFFFFFFF); + } + + /* VFRE: pool enabling for receive - 16 or 32 */ + IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), \ + num_pools == ETH_16_POOLS ? 0xFFFF : 0xFFFFFFFF); + + /* + * MPSAR - allow pools to read specific mac addresses + * In this case, all pools should be able to read from mac addr 0 + */ + IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(0), 0xFFFFFFFF); + IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(0), 0xFFFFFFFF); + + /* PFVLVF, PFVLVFB: set up filters for vlan tags as configured */ + for (i = 0; i < cfg->nb_pool_maps; i++) { + /* set vlan id in VF register and set the valid bit */ + IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), (IXGBE_VLVF_VIEN | \ + (cfg->pool_map[i].vlan_id & 0xFFF))); + /* + * Put the allowed pools in VFB reg. As we only have 16 or 32 + * pools, we only need to use the first half of the register + * i.e. bits 0-31 + */ + IXGBE_WRITE_REG(hw, IXGBE_VLVFB(i*2), cfg->pool_map[i].pools); + } +} + +/** + * ixgbe_dcb_config_tx_hw_config - Configure general DCB TX parameters + * @hw: pointer to hardware structure + * @dcb_config: pointer to ixgbe_dcb_config structure + */ +static void +ixgbe_dcb_tx_hw_config(struct ixgbe_hw *hw, + struct ixgbe_dcb_config *dcb_config) +{ + uint32_t reg; + uint32_t q; + + PMD_INIT_FUNC_TRACE(); + if (hw->mac.type != ixgbe_mac_82598EB) { + /* Disable the Tx desc arbiter so that MTQC can be changed */ + reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS); + reg |= IXGBE_RTTDCS_ARBDIS; + IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg); + + /* Enable DCB for Tx with 8 TCs */ + if (dcb_config->num_tcs.pg_tcs == 8) { + reg = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ; + } + else { + reg = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ; + } + if (dcb_config->vt_mode) + reg |= IXGBE_MTQC_VT_ENA; + IXGBE_WRITE_REG(hw, IXGBE_MTQC, reg); + + /* Disable drop for all queues */ + for (q = 0; q < 128; q++) + IXGBE_WRITE_REG(hw, IXGBE_QDE, + (IXGBE_QDE_WRITE | (q << IXGBE_QDE_IDX_SHIFT))); + + /* Enable the Tx desc arbiter */ + reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS); + reg &= ~IXGBE_RTTDCS_ARBDIS; + IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg); + + /* Enable Security TX Buffer IFG for DCB */ + reg = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG); + reg |= IXGBE_SECTX_DCB; + IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, reg); + } + return; +} + +/** + * ixgbe_vmdq_dcb_hw_tx_config - Configure general VMDQ+DCB TX parameters + * @dev: pointer to rte_eth_dev structure + * @dcb_config: pointer to ixgbe_dcb_config structure + */ +static void +ixgbe_vmdq_dcb_hw_tx_config(struct rte_eth_dev *dev, + struct ixgbe_dcb_config *dcb_config) +{ + struct rte_eth_vmdq_dcb_tx_conf *vmdq_tx_conf = + &dev->data->dev_conf.tx_adv_conf.vmdq_dcb_tx_conf; + struct ixgbe_hw *hw = + IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + PMD_INIT_FUNC_TRACE(); + if (hw->mac.type != ixgbe_mac_82598EB) + /*PF VF Transmit Enable*/ + IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), + vmdq_tx_conf->nb_queue_pools == ETH_16_POOLS ? 0xFFFF : 0xFFFFFFFF); + + /*Configure general DCB TX parameters*/ + ixgbe_dcb_tx_hw_config(hw,dcb_config); + return; +} + +static void +ixgbe_vmdq_dcb_rx_config(struct rte_eth_dev *dev, + struct ixgbe_dcb_config *dcb_config) +{ + struct rte_eth_vmdq_dcb_conf *vmdq_rx_conf = + &dev->data->dev_conf.rx_adv_conf.vmdq_dcb_conf; + struct ixgbe_dcb_tc_config *tc; + uint8_t i,j; + + /* convert rte_eth_conf.rx_adv_conf to struct ixgbe_dcb_config */ + if (vmdq_rx_conf->nb_queue_pools == ETH_16_POOLS ) { + dcb_config->num_tcs.pg_tcs = ETH_8_TCS; + dcb_config->num_tcs.pfc_tcs = ETH_8_TCS; + } + else { + dcb_config->num_tcs.pg_tcs = ETH_4_TCS; + dcb_config->num_tcs.pfc_tcs = ETH_4_TCS; + } + /* User Priority to Traffic Class mapping */ + for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) { + j = vmdq_rx_conf->dcb_tc[i]; + tc = &dcb_config->tc_config[j]; + tc->path[IXGBE_DCB_RX_CONFIG].up_to_tc_bitmap = + (uint8_t)(1 << j); + } +} + +static void +ixgbe_dcb_vt_tx_config(struct rte_eth_dev *dev, + struct ixgbe_dcb_config *dcb_config) +{ + struct rte_eth_vmdq_dcb_tx_conf *vmdq_tx_conf = + &dev->data->dev_conf.tx_adv_conf.vmdq_dcb_tx_conf; + struct ixgbe_dcb_tc_config *tc; + uint8_t i,j; + + /* convert rte_eth_conf.rx_adv_conf to struct ixgbe_dcb_config */ + if (vmdq_tx_conf->nb_queue_pools == ETH_16_POOLS ) { + dcb_config->num_tcs.pg_tcs = ETH_8_TCS; + dcb_config->num_tcs.pfc_tcs = ETH_8_TCS; + } + else { + dcb_config->num_tcs.pg_tcs = ETH_4_TCS; + dcb_config->num_tcs.pfc_tcs = ETH_4_TCS; + } + + /* User Priority to Traffic Class mapping */ + for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) { + j = vmdq_tx_conf->dcb_tc[i]; + tc = &dcb_config->tc_config[j]; + tc->path[IXGBE_DCB_TX_CONFIG].up_to_tc_bitmap = + (uint8_t)(1 << j); + } + return; +} + +static void +ixgbe_dcb_rx_config(struct rte_eth_dev *dev, + struct ixgbe_dcb_config *dcb_config) +{ + struct rte_eth_dcb_rx_conf *rx_conf = + &dev->data->dev_conf.rx_adv_conf.dcb_rx_conf; + struct ixgbe_dcb_tc_config *tc; + uint8_t i,j; + + dcb_config->num_tcs.pg_tcs = (uint8_t)rx_conf->nb_tcs; + dcb_config->num_tcs.pfc_tcs = (uint8_t)rx_conf->nb_tcs; + + /* User Priority to Traffic Class mapping */ + for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) { + j = rx_conf->dcb_tc[i]; + tc = &dcb_config->tc_config[j]; + tc->path[IXGBE_DCB_RX_CONFIG].up_to_tc_bitmap = + (uint8_t)(1 << j); + } +} + +static void +ixgbe_dcb_tx_config(struct rte_eth_dev *dev, + struct ixgbe_dcb_config *dcb_config) +{ + struct rte_eth_dcb_tx_conf *tx_conf = + &dev->data->dev_conf.tx_adv_conf.dcb_tx_conf; + struct ixgbe_dcb_tc_config *tc; + uint8_t i,j; + + dcb_config->num_tcs.pg_tcs = (uint8_t)tx_conf->nb_tcs; + dcb_config->num_tcs.pfc_tcs = (uint8_t)tx_conf->nb_tcs; + + /* User Priority to Traffic Class mapping */ + for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES; i++) { + j = tx_conf->dcb_tc[i]; + tc = &dcb_config->tc_config[j]; + tc->path[IXGBE_DCB_TX_CONFIG].up_to_tc_bitmap = + (uint8_t)(1 << j); + } +} + +/** + * ixgbe_dcb_rx_hw_config - Configure general DCB RX HW parameters + * @hw: pointer to hardware structure + * @dcb_config: pointer to ixgbe_dcb_config structure + */ +static void +ixgbe_dcb_rx_hw_config(struct ixgbe_hw *hw, + struct ixgbe_dcb_config *dcb_config) +{ + uint32_t reg; + uint32_t vlanctrl; + uint8_t i; + + PMD_INIT_FUNC_TRACE(); + /* + * Disable the arbiter before changing parameters + * (always enable recycle mode; WSP) + */ + reg = IXGBE_RTRPCS_RRM | IXGBE_RTRPCS_RAC | IXGBE_RTRPCS_ARBDIS; + IXGBE_WRITE_REG(hw, IXGBE_RTRPCS, reg); + + if (hw->mac.type != ixgbe_mac_82598EB) { + reg = IXGBE_READ_REG(hw, IXGBE_MRQC); + if (dcb_config->num_tcs.pg_tcs == 4) { + if (dcb_config->vt_mode) + reg = (reg & ~IXGBE_MRQC_MRQE_MASK) | + IXGBE_MRQC_VMDQRT4TCEN; + else { + /* no matter the mode is DCB or DCB_RSS, just + * set the MRQE to RSSXTCEN. RSS is controlled + * by RSS_FIELD + */ + IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, 0); + reg = (reg & ~IXGBE_MRQC_MRQE_MASK) | + IXGBE_MRQC_RTRSS4TCEN; + } + } + if (dcb_config->num_tcs.pg_tcs == 8) { + if (dcb_config->vt_mode) + reg = (reg & ~IXGBE_MRQC_MRQE_MASK) | + IXGBE_MRQC_VMDQRT8TCEN; + else { + IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, 0); + reg = (reg & ~IXGBE_MRQC_MRQE_MASK) | + IXGBE_MRQC_RTRSS8TCEN; + } + } + + IXGBE_WRITE_REG(hw, IXGBE_MRQC, reg); + } + + /* VLNCTRL: enable vlan filtering and allow all vlan tags through */ + vlanctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); + vlanctrl |= IXGBE_VLNCTRL_VFE; /* enable vlan filters */ + IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlanctrl); + + /* VFTA - enable all vlan filters */ + for (i = 0; i < NUM_VFTA_REGISTERS; i++) { + IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), 0xFFFFFFFF); + } + + /* + * Configure Rx packet plane (recycle mode; WSP) and + * enable arbiter + */ + reg = IXGBE_RTRPCS_RRM | IXGBE_RTRPCS_RAC; + IXGBE_WRITE_REG(hw, IXGBE_RTRPCS, reg); + + return; +} + +static void +ixgbe_dcb_hw_arbite_rx_config(struct ixgbe_hw *hw, uint16_t *refill, + uint16_t *max,uint8_t *bwg_id, uint8_t *tsa, uint8_t *map) +{ + switch (hw->mac.type) { + case ixgbe_mac_82598EB: + ixgbe_dcb_config_rx_arbiter_82598(hw, refill, max, tsa); + break; + case ixgbe_mac_82599EB: + case ixgbe_mac_X540: + case ixgbe_mac_X550: + case ixgbe_mac_X550EM_x: + case ixgbe_mac_X550EM_a: + ixgbe_dcb_config_rx_arbiter_82599(hw, refill, max, bwg_id, + tsa, map); + break; + default: + break; + } +} + +static void +ixgbe_dcb_hw_arbite_tx_config(struct ixgbe_hw *hw, uint16_t *refill, uint16_t *max, + uint8_t *bwg_id, uint8_t *tsa, uint8_t *map) +{ + switch (hw->mac.type) { + case ixgbe_mac_82598EB: + ixgbe_dcb_config_tx_desc_arbiter_82598(hw, refill, max, bwg_id,tsa); + ixgbe_dcb_config_tx_data_arbiter_82598(hw, refill, max, bwg_id,tsa); + break; + case ixgbe_mac_82599EB: + case ixgbe_mac_X540: + case ixgbe_mac_X550: + case ixgbe_mac_X550EM_x: + case ixgbe_mac_X550EM_a: + ixgbe_dcb_config_tx_desc_arbiter_82599(hw, refill, max, bwg_id,tsa); + ixgbe_dcb_config_tx_data_arbiter_82599(hw, refill, max, bwg_id,tsa, map); + break; + default: + break; + } +} + +#define DCB_RX_CONFIG 1 +#define DCB_TX_CONFIG 1 +#define DCB_TX_PB 1024 +/** + * ixgbe_dcb_hw_configure - Enable DCB and configure + * general DCB in VT mode and non-VT mode parameters + * @dev: pointer to rte_eth_dev structure + * @dcb_config: pointer to ixgbe_dcb_config structure + */ +static int +ixgbe_dcb_hw_configure(struct rte_eth_dev *dev, + struct ixgbe_dcb_config *dcb_config) +{ + int ret = 0; + uint8_t i,pfc_en,nb_tcs; + uint16_t pbsize, rx_buffer_size; + uint8_t config_dcb_rx = 0; + uint8_t config_dcb_tx = 0; + uint8_t tsa[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0}; + uint8_t bwgid[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0}; + uint16_t refill[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0}; + uint16_t max[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0}; + uint8_t map[IXGBE_DCB_MAX_TRAFFIC_CLASS] = {0}; + struct ixgbe_dcb_tc_config *tc; + uint32_t max_frame = dev->data->mtu + ETHER_HDR_LEN + ETHER_CRC_LEN; + struct ixgbe_hw *hw = + IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + switch(dev->data->dev_conf.rxmode.mq_mode){ + case ETH_MQ_RX_VMDQ_DCB: + dcb_config->vt_mode = true; + if (hw->mac.type != ixgbe_mac_82598EB) { + config_dcb_rx = DCB_RX_CONFIG; + /* + *get dcb and VT rx configuration parameters + *from rte_eth_conf + */ + ixgbe_vmdq_dcb_rx_config(dev, dcb_config); + /*Configure general VMDQ and DCB RX parameters*/ + ixgbe_vmdq_dcb_configure(dev); + } + break; + case ETH_MQ_RX_DCB: + case ETH_MQ_RX_DCB_RSS: + dcb_config->vt_mode = false; + config_dcb_rx = DCB_RX_CONFIG; + /* Get dcb TX configuration parameters from rte_eth_conf */ + ixgbe_dcb_rx_config(dev, dcb_config); + /*Configure general DCB RX parameters*/ + ixgbe_dcb_rx_hw_config(hw, dcb_config); + break; + default: + PMD_INIT_LOG(ERR, "Incorrect DCB RX mode configuration"); + break; + } + switch (dev->data->dev_conf.txmode.mq_mode) { + case ETH_MQ_TX_VMDQ_DCB: + dcb_config->vt_mode = true; + config_dcb_tx = DCB_TX_CONFIG; + /* get DCB and VT TX configuration parameters from rte_eth_conf */ + ixgbe_dcb_vt_tx_config(dev,dcb_config); + /*Configure general VMDQ and DCB TX parameters*/ + ixgbe_vmdq_dcb_hw_tx_config(dev,dcb_config); + break; + + case ETH_MQ_TX_DCB: + dcb_config->vt_mode = false; + config_dcb_tx = DCB_TX_CONFIG; + /*get DCB TX configuration parameters from rte_eth_conf*/ + ixgbe_dcb_tx_config(dev, dcb_config); + /*Configure general DCB TX parameters*/ + ixgbe_dcb_tx_hw_config(hw, dcb_config); + break; + default: + PMD_INIT_LOG(ERR, "Incorrect DCB TX mode configuration"); + break; + } + + nb_tcs = dcb_config->num_tcs.pfc_tcs; + /* Unpack map */ + ixgbe_dcb_unpack_map_cee(dcb_config, IXGBE_DCB_RX_CONFIG, map); + if (nb_tcs == ETH_4_TCS) { + /* Avoid un-configured priority mapping to TC0 */ + uint8_t j = 4; + uint8_t mask = 0xFF; + for (i = 0; i < ETH_DCB_NUM_USER_PRIORITIES - 4; i++) + mask = (uint8_t)(mask & (~ (1 << map[i]))); + for (i = 0; mask && (i < IXGBE_DCB_MAX_TRAFFIC_CLASS); i++) { + if ((mask & 0x1) && (j < ETH_DCB_NUM_USER_PRIORITIES)) + map[j++] = i; + mask >>= 1; + } + /* Re-configure 4 TCs BW */ + for (i = 0; i < nb_tcs; i++) { + tc = &dcb_config->tc_config[i]; + tc->path[IXGBE_DCB_TX_CONFIG].bwg_percent = + (uint8_t)(100 / nb_tcs); + tc->path[IXGBE_DCB_RX_CONFIG].bwg_percent = + (uint8_t)(100 / nb_tcs); + } + for (; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) { + tc = &dcb_config->tc_config[i]; + tc->path[IXGBE_DCB_TX_CONFIG].bwg_percent = 0; + tc->path[IXGBE_DCB_RX_CONFIG].bwg_percent = 0; + } + } + + switch (hw->mac.type) { + case ixgbe_mac_X550: + case ixgbe_mac_X550EM_x: + case ixgbe_mac_X550EM_a: + rx_buffer_size = X550_RX_BUFFER_SIZE; + break; + default: + rx_buffer_size = NIC_RX_BUFFER_SIZE; + break; + } + + if (config_dcb_rx) { + /* Set RX buffer size */ + pbsize = (uint16_t)(rx_buffer_size / nb_tcs); + uint32_t rxpbsize = pbsize << IXGBE_RXPBSIZE_SHIFT; + for (i = 0; i < nb_tcs; i++) { + IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpbsize); + } + /* zero alloc all unused TCs */ + for (; i < ETH_DCB_NUM_USER_PRIORITIES; i++) { + IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0); + } + } + if (config_dcb_tx) { + /* Only support an equally distributed Tx packet buffer strategy. */ + uint32_t txpktsize = IXGBE_TXPBSIZE_MAX / nb_tcs; + uint32_t txpbthresh = (txpktsize / DCB_TX_PB) - IXGBE_TXPKT_SIZE_MAX; + for (i = 0; i < nb_tcs; i++) { + IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize); + IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh); + } + /* Clear unused TCs, if any, to zero buffer size*/ + for (; i < ETH_DCB_NUM_USER_PRIORITIES; i++) { + IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0); + IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0); + } + } + + /*Calculates traffic class credits*/ + ixgbe_dcb_calculate_tc_credits_cee(hw, dcb_config,max_frame, + IXGBE_DCB_TX_CONFIG); + ixgbe_dcb_calculate_tc_credits_cee(hw, dcb_config,max_frame, + IXGBE_DCB_RX_CONFIG); + + if (config_dcb_rx) { + /* Unpack CEE standard containers */ + ixgbe_dcb_unpack_refill_cee(dcb_config, IXGBE_DCB_RX_CONFIG, refill); + ixgbe_dcb_unpack_max_cee(dcb_config, max); + ixgbe_dcb_unpack_bwgid_cee(dcb_config, IXGBE_DCB_RX_CONFIG, bwgid); + ixgbe_dcb_unpack_tsa_cee(dcb_config, IXGBE_DCB_RX_CONFIG, tsa); + /* Configure PG(ETS) RX */ + ixgbe_dcb_hw_arbite_rx_config(hw,refill,max,bwgid,tsa,map); + } + + if (config_dcb_tx) { + /* Unpack CEE standard containers */ + ixgbe_dcb_unpack_refill_cee(dcb_config, IXGBE_DCB_TX_CONFIG, refill); + ixgbe_dcb_unpack_max_cee(dcb_config, max); + ixgbe_dcb_unpack_bwgid_cee(dcb_config, IXGBE_DCB_TX_CONFIG, bwgid); + ixgbe_dcb_unpack_tsa_cee(dcb_config, IXGBE_DCB_TX_CONFIG, tsa); + /* Configure PG(ETS) TX */ + ixgbe_dcb_hw_arbite_tx_config(hw,refill,max,bwgid,tsa,map); + } + + /*Configure queue statistics registers*/ + ixgbe_dcb_config_tc_stats_82599(hw, dcb_config); + + /* Check if the PFC is supported */ + if (dev->data->dev_conf.dcb_capability_en & ETH_DCB_PFC_SUPPORT) { + pbsize = (uint16_t)(rx_buffer_size / nb_tcs); + for (i = 0; i < nb_tcs; i++) { + /* + * If the TC count is 8,and the default high_water is 48, + * the low_water is 16 as default. + */ + hw->fc.high_water[i] = (pbsize * 3 ) / 4; + hw->fc.low_water[i] = pbsize / 4; + /* Enable pfc for this TC */ + tc = &dcb_config->tc_config[i]; + tc->pfc = ixgbe_dcb_pfc_enabled; + } + ixgbe_dcb_unpack_pfc_cee(dcb_config, map, &pfc_en); + if (dcb_config->num_tcs.pfc_tcs == ETH_4_TCS) + pfc_en &= 0x0F; + ret = ixgbe_dcb_config_pfc(hw, pfc_en, map); + } + + return ret; +} + +/** + * ixgbe_configure_dcb - Configure DCB Hardware + * @dev: pointer to rte_eth_dev + */ +void ixgbe_configure_dcb(struct rte_eth_dev *dev) +{ + struct ixgbe_dcb_config *dcb_cfg = + IXGBE_DEV_PRIVATE_TO_DCB_CFG(dev->data->dev_private); + struct rte_eth_conf *dev_conf = &(dev->data->dev_conf); + + PMD_INIT_FUNC_TRACE(); + + /* check support mq_mode for DCB */ + if ((dev_conf->rxmode.mq_mode != ETH_MQ_RX_VMDQ_DCB) && + (dev_conf->rxmode.mq_mode != ETH_MQ_RX_DCB) && + (dev_conf->rxmode.mq_mode != ETH_MQ_RX_DCB_RSS)) + return; + + if (dev->data->nb_rx_queues != ETH_DCB_NUM_QUEUES) + return; + + /** Configure DCB hardware **/ + ixgbe_dcb_hw_configure(dev, dcb_cfg); + + return; +} + +/* + * VMDq only support for 10 GbE NIC. + */ +static void +ixgbe_vmdq_rx_hw_configure(struct rte_eth_dev *dev) +{ + struct rte_eth_vmdq_rx_conf *cfg; + struct ixgbe_hw *hw; + enum rte_eth_nb_pools num_pools; + uint32_t mrqc, vt_ctl, vlanctrl; + uint32_t vmolr = 0; + int i; + + PMD_INIT_FUNC_TRACE(); + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + cfg = &dev->data->dev_conf.rx_adv_conf.vmdq_rx_conf; + num_pools = cfg->nb_queue_pools; + + ixgbe_rss_disable(dev); + + /* MRQC: enable vmdq */ + mrqc = IXGBE_MRQC_VMDQEN; + IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); + + /* PFVTCTL: turn on virtualisation and set the default pool */ + vt_ctl = IXGBE_VT_CTL_VT_ENABLE | IXGBE_VT_CTL_REPLEN; + if (cfg->enable_default_pool) + vt_ctl |= (cfg->default_pool << IXGBE_VT_CTL_POOL_SHIFT); + else + vt_ctl |= IXGBE_VT_CTL_DIS_DEFPL; + + IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vt_ctl); + + for (i = 0; i < (int)num_pools; i++) { + vmolr = ixgbe_convert_vm_rx_mask_to_val(cfg->rx_mode, vmolr); + IXGBE_WRITE_REG(hw, IXGBE_VMOLR(i), vmolr); + } + + /* VLNCTRL: enable vlan filtering and allow all vlan tags through */ + vlanctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); + vlanctrl |= IXGBE_VLNCTRL_VFE; /* enable vlan filters */ + IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlanctrl); + + /* VFTA - enable all vlan filters */ + for (i = 0; i < NUM_VFTA_REGISTERS; i++) + IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), UINT32_MAX); + + /* VFRE: pool enabling for receive - 64 */ + IXGBE_WRITE_REG(hw, IXGBE_VFRE(0), UINT32_MAX); + if (num_pools == ETH_64_POOLS) + IXGBE_WRITE_REG(hw, IXGBE_VFRE(1), UINT32_MAX); + + /* + * MPSAR - allow pools to read specific mac addresses + * In this case, all pools should be able to read from mac addr 0 + */ + IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(0), UINT32_MAX); + IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(0), UINT32_MAX); + + /* PFVLVF, PFVLVFB: set up filters for vlan tags as configured */ + for (i = 0; i < cfg->nb_pool_maps; i++) { + /* set vlan id in VF register and set the valid bit */ + IXGBE_WRITE_REG(hw, IXGBE_VLVF(i), (IXGBE_VLVF_VIEN | \ + (cfg->pool_map[i].vlan_id & IXGBE_RXD_VLAN_ID_MASK))); + /* + * Put the allowed pools in VFB reg. As we only have 16 or 64 + * pools, we only need to use the first half of the register + * i.e. bits 0-31 + */ + if (((cfg->pool_map[i].pools >> 32) & UINT32_MAX) == 0) + IXGBE_WRITE_REG(hw, IXGBE_VLVFB(i*2), \ + (cfg->pool_map[i].pools & UINT32_MAX)); + else + IXGBE_WRITE_REG(hw, IXGBE_VLVFB((i*2+1)), \ + ((cfg->pool_map[i].pools >> 32) \ + & UINT32_MAX)); + + } + + /* PFDMA Tx General Switch Control Enables VMDQ loopback */ + if (cfg->enable_loop_back) { + IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); + for (i = 0; i < RTE_IXGBE_VMTXSW_REGISTER_COUNT; i++) + IXGBE_WRITE_REG(hw, IXGBE_VMTXSW(i), UINT32_MAX); + } + + IXGBE_WRITE_FLUSH(hw); +} + +/* + * ixgbe_dcb_config_tx_hw_config - Configure general VMDq TX parameters + * @hw: pointer to hardware structure + */ +static void +ixgbe_vmdq_tx_hw_configure(struct ixgbe_hw *hw) +{ + uint32_t reg; + uint32_t q; + + PMD_INIT_FUNC_TRACE(); + /*PF VF Transmit Enable*/ + IXGBE_WRITE_REG(hw, IXGBE_VFTE(0), UINT32_MAX); + IXGBE_WRITE_REG(hw, IXGBE_VFTE(1), UINT32_MAX); + + /* Disable the Tx desc arbiter so that MTQC can be changed */ + reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS); + reg |= IXGBE_RTTDCS_ARBDIS; + IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg); + + reg = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF; + IXGBE_WRITE_REG(hw, IXGBE_MTQC, reg); + + /* Disable drop for all queues */ + for (q = 0; q < IXGBE_MAX_RX_QUEUE_NUM; q++) + IXGBE_WRITE_REG(hw, IXGBE_QDE, + (IXGBE_QDE_WRITE | (q << IXGBE_QDE_IDX_SHIFT))); + + /* Enable the Tx desc arbiter */ + reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS); + reg &= ~IXGBE_RTTDCS_ARBDIS; + IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg); + + IXGBE_WRITE_FLUSH(hw); + + return; +} + +static int __attribute__((cold)) +ixgbe_alloc_rx_queue_mbufs(struct ixgbe_rx_queue *rxq) +{ + struct ixgbe_rx_entry *rxe = rxq->sw_ring; + uint64_t dma_addr; + unsigned i; + + /* Initialize software ring entries */ + for (i = 0; i < rxq->nb_rx_desc; i++) { + volatile union ixgbe_adv_rx_desc *rxd; + struct rte_mbuf *mbuf = rte_rxmbuf_alloc(rxq->mb_pool); + if (mbuf == NULL) { + PMD_INIT_LOG(ERR, "RX mbuf alloc failed queue_id=%u", + (unsigned) rxq->queue_id); + return -ENOMEM; + } + + rte_mbuf_refcnt_set(mbuf, 1); + mbuf->next = NULL; + mbuf->data_off = RTE_PKTMBUF_HEADROOM; + mbuf->nb_segs = 1; + mbuf->port = rxq->port_id; + + dma_addr = + rte_cpu_to_le_64(rte_mbuf_data_dma_addr_default(mbuf)); + rxd = &rxq->rx_ring[i]; + rxd->read.hdr_addr = 0; + rxd->read.pkt_addr = dma_addr; + rxe[i].mbuf = mbuf; + } + + return 0; +} + +static int +ixgbe_config_vf_rss(struct rte_eth_dev *dev) +{ + struct ixgbe_hw *hw; + uint32_t mrqc; + + ixgbe_rss_configure(dev); + + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + /* MRQC: enable VF RSS */ + mrqc = IXGBE_READ_REG(hw, IXGBE_MRQC); + mrqc &= ~IXGBE_MRQC_MRQE_MASK; + switch (RTE_ETH_DEV_SRIOV(dev).active) { + case ETH_64_POOLS: + mrqc |= IXGBE_MRQC_VMDQRSS64EN; + break; + + case ETH_32_POOLS: + mrqc |= IXGBE_MRQC_VMDQRSS32EN; + break; + + default: + PMD_INIT_LOG(ERR, "Invalid pool number in IOV mode with VMDQ RSS"); + return -EINVAL; + } + + IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); + + return 0; +} + +static int +ixgbe_config_vf_default(struct rte_eth_dev *dev) +{ + struct ixgbe_hw *hw = + IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + switch (RTE_ETH_DEV_SRIOV(dev).active) { + case ETH_64_POOLS: + IXGBE_WRITE_REG(hw, IXGBE_MRQC, + IXGBE_MRQC_VMDQEN); + break; + + case ETH_32_POOLS: + IXGBE_WRITE_REG(hw, IXGBE_MRQC, + IXGBE_MRQC_VMDQRT4TCEN); + break; + + case ETH_16_POOLS: + IXGBE_WRITE_REG(hw, IXGBE_MRQC, + IXGBE_MRQC_VMDQRT8TCEN); + break; + default: + PMD_INIT_LOG(ERR, + "invalid pool number in IOV mode"); + break; + } + return 0; +} + +static int +ixgbe_dev_mq_rx_configure(struct rte_eth_dev *dev) +{ + struct ixgbe_hw *hw = + IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + if (hw->mac.type == ixgbe_mac_82598EB) + return 0; + + if (RTE_ETH_DEV_SRIOV(dev).active == 0) { + /* + * SRIOV inactive scheme + * any DCB/RSS w/o VMDq multi-queue setting + */ + switch (dev->data->dev_conf.rxmode.mq_mode) { + case ETH_MQ_RX_RSS: + case ETH_MQ_RX_DCB_RSS: + case ETH_MQ_RX_VMDQ_RSS: + ixgbe_rss_configure(dev); + break; + + case ETH_MQ_RX_VMDQ_DCB: + ixgbe_vmdq_dcb_configure(dev); + break; + + case ETH_MQ_RX_VMDQ_ONLY: + ixgbe_vmdq_rx_hw_configure(dev); + break; + + case ETH_MQ_RX_NONE: + default: + /* if mq_mode is none, disable rss mode.*/ + ixgbe_rss_disable(dev); + break; + } + } else { + /* + * SRIOV active scheme + * Support RSS together with VMDq & SRIOV + */ + switch (dev->data->dev_conf.rxmode.mq_mode) { + case ETH_MQ_RX_RSS: + case ETH_MQ_RX_VMDQ_RSS: + ixgbe_config_vf_rss(dev); + break; + + /* FIXME if support DCB/RSS together with VMDq & SRIOV */ + case ETH_MQ_RX_VMDQ_DCB: + case ETH_MQ_RX_VMDQ_DCB_RSS: + PMD_INIT_LOG(ERR, + "Could not support DCB with VMDq & SRIOV"); + return -1; + default: + ixgbe_config_vf_default(dev); + break; + } + } + + return 0; +} + +static int +ixgbe_dev_mq_tx_configure(struct rte_eth_dev *dev) +{ + struct ixgbe_hw *hw = + IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + uint32_t mtqc; + uint32_t rttdcs; + + if (hw->mac.type == ixgbe_mac_82598EB) + return 0; + + /* disable arbiter before setting MTQC */ + rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS); + rttdcs |= IXGBE_RTTDCS_ARBDIS; + IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs); + + if (RTE_ETH_DEV_SRIOV(dev).active == 0) { + /* + * SRIOV inactive scheme + * any DCB w/o VMDq multi-queue setting + */ + if (dev->data->dev_conf.txmode.mq_mode == ETH_MQ_TX_VMDQ_ONLY) + ixgbe_vmdq_tx_hw_configure(hw); + else { + mtqc = IXGBE_MTQC_64Q_1PB; + IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc); + } + } else { + switch (RTE_ETH_DEV_SRIOV(dev).active) { + + /* + * SRIOV active scheme + * FIXME if support DCB together with VMDq & SRIOV + */ + case ETH_64_POOLS: + mtqc = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_64VF; + break; + case ETH_32_POOLS: + mtqc = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_32VF; + break; + case ETH_16_POOLS: + mtqc = IXGBE_MTQC_VT_ENA | IXGBE_MTQC_RT_ENA | + IXGBE_MTQC_8TC_8TQ; + break; + default: + mtqc = IXGBE_MTQC_64Q_1PB; + PMD_INIT_LOG(ERR, "invalid pool number in IOV mode"); + } + IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc); + } + + /* re-enable arbiter */ + rttdcs &= ~IXGBE_RTTDCS_ARBDIS; + IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs); + + return 0; +} + +/** + * ixgbe_get_rscctl_maxdesc - Calculate the RSCCTL[n].MAXDESC for PF + * + * Return the RSCCTL[n].MAXDESC for 82599 and x540 PF devices according to the + * spec rev. 3.0 chapter 8.2.3.8.13. + * + * @pool Memory pool of the Rx queue + */ +static inline uint32_t +ixgbe_get_rscctl_maxdesc(struct rte_mempool *pool) +{ + struct rte_pktmbuf_pool_private *mp_priv = rte_mempool_get_priv(pool); + + /* MAXDESC * SRRCTL.BSIZEPKT must not exceed 64 KB minus one */ + uint16_t maxdesc = + IPV4_MAX_PKT_LEN / + (mp_priv->mbuf_data_room_size - RTE_PKTMBUF_HEADROOM); + + if (maxdesc >= 16) + return IXGBE_RSCCTL_MAXDESC_16; + else if (maxdesc >= 8) + return IXGBE_RSCCTL_MAXDESC_8; + else if (maxdesc >= 4) + return IXGBE_RSCCTL_MAXDESC_4; + else + return IXGBE_RSCCTL_MAXDESC_1; +} + +/** + * ixgbe_set_ivar - Setup the correct IVAR register for a particular MSIX + * interrupt + * + * (Taken from FreeBSD tree) + * (yes this is all very magic and confusing :) + * + * @dev port handle + * @entry the register array entry + * @vector the MSIX vector for this queue + * @type RX/TX/MISC + */ +static void +ixgbe_set_ivar(struct rte_eth_dev *dev, u8 entry, u8 vector, s8 type) +{ + struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + u32 ivar, index; + + vector |= IXGBE_IVAR_ALLOC_VAL; + + switch (hw->mac.type) { + + case ixgbe_mac_82598EB: + if (type == -1) + entry = IXGBE_IVAR_OTHER_CAUSES_INDEX; + else + entry += (type * 64); + index = (entry >> 2) & 0x1F; + ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index)); + ivar &= ~(0xFF << (8 * (entry & 0x3))); + ivar |= (vector << (8 * (entry & 0x3))); + IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar); + break; + + case ixgbe_mac_82599EB: + case ixgbe_mac_X540: + if (type == -1) { /* MISC IVAR */ + index = (entry & 1) * 8; + ivar = IXGBE_READ_REG(hw, IXGBE_IVAR_MISC); + ivar &= ~(0xFF << index); + ivar |= (vector << index); + IXGBE_WRITE_REG(hw, IXGBE_IVAR_MISC, ivar); + } else { /* RX/TX IVARS */ + index = (16 * (entry & 1)) + (8 * type); + ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(entry >> 1)); + ivar &= ~(0xFF << index); + ivar |= (vector << index); + IXGBE_WRITE_REG(hw, IXGBE_IVAR(entry >> 1), ivar); + } + + break; + + default: + break; + } +} + +void __attribute__((cold)) +ixgbe_set_rx_function(struct rte_eth_dev *dev) +{ + uint16_t i, rx_using_sse; + struct ixgbe_adapter *adapter = + (struct ixgbe_adapter *)dev->data->dev_private; + + /* + * In order to allow Vector Rx there are a few configuration + * conditions to be met and Rx Bulk Allocation should be allowed. + */ + if (ixgbe_rx_vec_dev_conf_condition_check(dev) || + !adapter->rx_bulk_alloc_allowed) { + PMD_INIT_LOG(DEBUG, "Port[%d] doesn't meet Vector Rx " + "preconditions or RTE_IXGBE_INC_VECTOR is " + "not enabled", + dev->data->port_id); + + adapter->rx_vec_allowed = false; + } + + /* + * Initialize the appropriate LRO callback. + * + * If all queues satisfy the bulk allocation preconditions + * (hw->rx_bulk_alloc_allowed is TRUE) then we may use bulk allocation. + * Otherwise use a single allocation version. + */ + if (dev->data->lro) { + if (adapter->rx_bulk_alloc_allowed) { + PMD_INIT_LOG(DEBUG, "LRO is requested. Using a bulk " + "allocation version"); + dev->rx_pkt_burst = ixgbe_recv_pkts_lro_bulk_alloc; + } else { + PMD_INIT_LOG(DEBUG, "LRO is requested. Using a single " + "allocation version"); + dev->rx_pkt_burst = ixgbe_recv_pkts_lro_single_alloc; + } + } else if (dev->data->scattered_rx) { + /* + * Set the non-LRO scattered callback: there are Vector and + * single allocation versions. + */ + if (adapter->rx_vec_allowed) { + PMD_INIT_LOG(DEBUG, "Using Vector Scattered Rx " + "callback (port=%d).", + dev->data->port_id); + + dev->rx_pkt_burst = ixgbe_recv_scattered_pkts_vec; + } else if (adapter->rx_bulk_alloc_allowed) { + PMD_INIT_LOG(DEBUG, "Using a Scattered with bulk " + "allocation callback (port=%d).", + dev->data->port_id); + dev->rx_pkt_burst = ixgbe_recv_pkts_lro_bulk_alloc; + } else { + PMD_INIT_LOG(DEBUG, "Using Regualr (non-vector, " + "single allocation) " + "Scattered Rx callback " + "(port=%d).", + dev->data->port_id); + + dev->rx_pkt_burst = ixgbe_recv_pkts_lro_single_alloc; + } + /* + * Below we set "simple" callbacks according to port/queues parameters. + * If parameters allow we are going to choose between the following + * callbacks: + * - Vector + * - Bulk Allocation + * - Single buffer allocation (the simplest one) + */ + } else if (adapter->rx_vec_allowed) { + PMD_INIT_LOG(DEBUG, "Vector rx enabled, please make sure RX " + "burst size no less than %d (port=%d).", + RTE_IXGBE_DESCS_PER_LOOP, + dev->data->port_id); + + dev->rx_pkt_burst = ixgbe_recv_pkts_vec; + } else if (adapter->rx_bulk_alloc_allowed) { + PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are " + "satisfied. Rx Burst Bulk Alloc function " + "will be used on port=%d.", + dev->data->port_id); + + dev->rx_pkt_burst = ixgbe_recv_pkts_bulk_alloc; + } else { + PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are not " + "satisfied, or Scattered Rx is requested " + "(port=%d).", + dev->data->port_id); + + dev->rx_pkt_burst = ixgbe_recv_pkts; + } + + /* Propagate information about RX function choice through all queues. */ + + rx_using_sse = + (dev->rx_pkt_burst == ixgbe_recv_scattered_pkts_vec || + dev->rx_pkt_burst == ixgbe_recv_pkts_vec); + + for (i = 0; i < dev->data->nb_rx_queues; i++) { + struct ixgbe_rx_queue *rxq = dev->data->rx_queues[i]; + rxq->rx_using_sse = rx_using_sse; + } +} + +/** + * ixgbe_set_rsc - configure RSC related port HW registers + * + * Configures the port's RSC related registers according to the 4.6.7.2 chapter + * of 82599 Spec (x540 configuration is virtually the same). + * + * @dev port handle + * + * Returns 0 in case of success or a non-zero error code + */ +static int +ixgbe_set_rsc(struct rte_eth_dev *dev) +{ + struct rte_eth_rxmode *rx_conf = &dev->data->dev_conf.rxmode; + struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + struct rte_eth_dev_info dev_info = { 0 }; + bool rsc_capable = false; + uint16_t i; + uint32_t rdrxctl; + + /* Sanity check */ + dev->dev_ops->dev_infos_get(dev, &dev_info); + if (dev_info.rx_offload_capa & DEV_RX_OFFLOAD_TCP_LRO) + rsc_capable = true; + + if (!rsc_capable && rx_conf->enable_lro) { + PMD_INIT_LOG(CRIT, "LRO is requested on HW that doesn't " + "support it"); + return -EINVAL; + } + + /* RSC global configuration (chapter 4.6.7.2.1 of 82599 Spec) */ + + if (!rx_conf->hw_strip_crc && rx_conf->enable_lro) { + /* + * According to chapter of 4.6.7.2.1 of the Spec Rev. + * 3.0 RSC configuration requires HW CRC stripping being + * enabled. If user requested both HW CRC stripping off + * and RSC on - return an error. + */ + PMD_INIT_LOG(CRIT, "LRO can't be enabled when HW CRC " + "is disabled"); + return -EINVAL; + } + + /* RFCTL configuration */ + if (rsc_capable) { + uint32_t rfctl = IXGBE_READ_REG(hw, IXGBE_RFCTL); + if (rx_conf->enable_lro) + /* + * Since NFS packets coalescing is not supported - clear + * RFCTL.NFSW_DIS and RFCTL.NFSR_DIS when RSC is + * enabled. + */ + rfctl &= ~(IXGBE_RFCTL_RSC_DIS | IXGBE_RFCTL_NFSW_DIS | + IXGBE_RFCTL_NFSR_DIS); + else + rfctl |= IXGBE_RFCTL_RSC_DIS; + + IXGBE_WRITE_REG(hw, IXGBE_RFCTL, rfctl); + } + + /* If LRO hasn't been requested - we are done here. */ + if (!rx_conf->enable_lro) + return 0; + + /* Set RDRXCTL.RSCACKC bit */ + rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL); + rdrxctl |= IXGBE_RDRXCTL_RSCACKC; + IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl); + + /* Per-queue RSC configuration (chapter 4.6.7.2.2 of 82599 Spec) */ + for (i = 0; i < dev->data->nb_rx_queues; i++) { + struct ixgbe_rx_queue *rxq = dev->data->rx_queues[i]; + uint32_t srrctl = + IXGBE_READ_REG(hw, IXGBE_SRRCTL(rxq->reg_idx)); + uint32_t rscctl = + IXGBE_READ_REG(hw, IXGBE_RSCCTL(rxq->reg_idx)); + uint32_t psrtype = + IXGBE_READ_REG(hw, IXGBE_PSRTYPE(rxq->reg_idx)); + uint32_t eitr = + IXGBE_READ_REG(hw, IXGBE_EITR(rxq->reg_idx)); + + /* + * ixgbe PMD doesn't support header-split at the moment. + * + * Following the 4.6.7.2.1 chapter of the 82599/x540 + * Spec if RSC is enabled the SRRCTL[n].BSIZEHEADER + * should be configured even if header split is not + * enabled. We will configure it 128 bytes following the + * recommendation in the spec. + */ + srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK; + srrctl |= (128 << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) & + IXGBE_SRRCTL_BSIZEHDR_MASK; + + /* + * TODO: Consider setting the Receive Descriptor Minimum + * Threshold Size for an RSC case. This is not an obviously + * beneficiary option but the one worth considering... + */ + + rscctl |= IXGBE_RSCCTL_RSCEN; + rscctl |= ixgbe_get_rscctl_maxdesc(rxq->mb_pool); + psrtype |= IXGBE_PSRTYPE_TCPHDR; + + /* + * RSC: Set ITR interval corresponding to 2K ints/s. + * + * Full-sized RSC aggregations for a 10Gb/s link will + * arrive at about 20K aggregation/s rate. + * + * 2K inst/s rate will make only 10% of the + * aggregations to be closed due to the interrupt timer + * expiration for a streaming at wire-speed case. + * + * For a sparse streaming case this setting will yield + * at most 500us latency for a single RSC aggregation. + */ + eitr &= ~IXGBE_EITR_ITR_INT_MASK; + eitr |= IXGBE_EITR_INTERVAL_US(500) | IXGBE_EITR_CNT_WDIS; + + IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(rxq->reg_idx), srrctl); + IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(rxq->reg_idx), rscctl); + IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(rxq->reg_idx), psrtype); + IXGBE_WRITE_REG(hw, IXGBE_EITR(rxq->reg_idx), eitr); + + /* + * RSC requires the mapping of the queue to the + * interrupt vector. + */ + ixgbe_set_ivar(dev, rxq->reg_idx, i, 0); + } + + dev->data->lro = 1; + + PMD_INIT_LOG(DEBUG, "enabling LRO mode"); + + return 0; +} + +/* + * Initializes Receive Unit. + */ +int __attribute__((cold)) +ixgbe_dev_rx_init(struct rte_eth_dev *dev) +{ + struct ixgbe_hw *hw; + struct ixgbe_rx_queue *rxq; + uint64_t bus_addr; + uint32_t rxctrl; + uint32_t fctrl; + uint32_t hlreg0; + uint32_t maxfrs; + uint32_t srrctl; + uint32_t rdrxctl; + uint32_t rxcsum; + uint16_t buf_size; + uint16_t i; + struct rte_eth_rxmode *rx_conf = &dev->data->dev_conf.rxmode; + int rc; + + PMD_INIT_FUNC_TRACE(); + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + /* + * Make sure receives are disabled while setting + * up the RX context (registers, descriptor rings, etc.). + */ + rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); + IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl & ~IXGBE_RXCTRL_RXEN); + + /* Enable receipt of broadcasted frames */ + fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); + fctrl |= IXGBE_FCTRL_BAM; + fctrl |= IXGBE_FCTRL_DPF; + fctrl |= IXGBE_FCTRL_PMCF; + IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); + + /* + * Configure CRC stripping, if any. + */ + hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0); + if (rx_conf->hw_strip_crc) + hlreg0 |= IXGBE_HLREG0_RXCRCSTRP; + else + hlreg0 &= ~IXGBE_HLREG0_RXCRCSTRP; + + /* + * Configure jumbo frame support, if any. + */ + if (rx_conf->jumbo_frame == 1) { + hlreg0 |= IXGBE_HLREG0_JUMBOEN; + maxfrs = IXGBE_READ_REG(hw, IXGBE_MAXFRS); + maxfrs &= 0x0000FFFF; + maxfrs |= (rx_conf->max_rx_pkt_len << 16); + IXGBE_WRITE_REG(hw, IXGBE_MAXFRS, maxfrs); + } else + hlreg0 &= ~IXGBE_HLREG0_JUMBOEN; + + /* + * If loopback mode is configured for 82599, set LPBK bit. + */ + if (hw->mac.type == ixgbe_mac_82599EB && + dev->data->dev_conf.lpbk_mode == IXGBE_LPBK_82599_TX_RX) + hlreg0 |= IXGBE_HLREG0_LPBK; + else + hlreg0 &= ~IXGBE_HLREG0_LPBK; + + IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0); + + /* Setup RX queues */ + for (i = 0; i < dev->data->nb_rx_queues; i++) { + rxq = dev->data->rx_queues[i]; + + /* + * Reset crc_len in case it was changed after queue setup by a + * call to configure. + */ + rxq->crc_len = rx_conf->hw_strip_crc ? 0 : ETHER_CRC_LEN; + + /* Setup the Base and Length of the Rx Descriptor Rings */ + bus_addr = rxq->rx_ring_phys_addr; + IXGBE_WRITE_REG(hw, IXGBE_RDBAL(rxq->reg_idx), + (uint32_t)(bus_addr & 0x00000000ffffffffULL)); + IXGBE_WRITE_REG(hw, IXGBE_RDBAH(rxq->reg_idx), + (uint32_t)(bus_addr >> 32)); + IXGBE_WRITE_REG(hw, IXGBE_RDLEN(rxq->reg_idx), + rxq->nb_rx_desc * sizeof(union ixgbe_adv_rx_desc)); + IXGBE_WRITE_REG(hw, IXGBE_RDH(rxq->reg_idx), 0); + IXGBE_WRITE_REG(hw, IXGBE_RDT(rxq->reg_idx), 0); + + /* Configure the SRRCTL register */ +#ifdef RTE_HEADER_SPLIT_ENABLE + /* + * Configure Header Split + */ + if (rx_conf->header_split) { + if (hw->mac.type == ixgbe_mac_82599EB) { + /* Must setup the PSRTYPE register */ + uint32_t psrtype; + psrtype = IXGBE_PSRTYPE_TCPHDR | + IXGBE_PSRTYPE_UDPHDR | + IXGBE_PSRTYPE_IPV4HDR | + IXGBE_PSRTYPE_IPV6HDR; + IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(rxq->reg_idx), psrtype); + } + srrctl = ((rx_conf->split_hdr_size << + IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) & + IXGBE_SRRCTL_BSIZEHDR_MASK); + srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; + } else +#endif + srrctl = IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; + + /* Set if packets are dropped when no descriptors available */ + if (rxq->drop_en) + srrctl |= IXGBE_SRRCTL_DROP_EN; + + /* + * Configure the RX buffer size in the BSIZEPACKET field of + * the SRRCTL register of the queue. + * The value is in 1 KB resolution. Valid values can be from + * 1 KB to 16 KB. + */ + buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mb_pool) - + RTE_PKTMBUF_HEADROOM); + srrctl |= ((buf_size >> IXGBE_SRRCTL_BSIZEPKT_SHIFT) & + IXGBE_SRRCTL_BSIZEPKT_MASK); + + IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(rxq->reg_idx), srrctl); + + buf_size = (uint16_t) ((srrctl & IXGBE_SRRCTL_BSIZEPKT_MASK) << + IXGBE_SRRCTL_BSIZEPKT_SHIFT); + + /* It adds dual VLAN length for supporting dual VLAN */ + if (dev->data->dev_conf.rxmode.max_rx_pkt_len + + 2 * IXGBE_VLAN_TAG_SIZE > buf_size) + dev->data->scattered_rx = 1; + } + + if (rx_conf->enable_scatter) + dev->data->scattered_rx = 1; + + /* + * Device configured with multiple RX queues. + */ + ixgbe_dev_mq_rx_configure(dev); + + /* + * Setup the Checksum Register. + * Disable Full-Packet Checksum which is mutually exclusive with RSS. + * Enable IP/L4 checkum computation by hardware if requested to do so. + */ + rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); + rxcsum |= IXGBE_RXCSUM_PCSD; + if (rx_conf->hw_ip_checksum) + rxcsum |= IXGBE_RXCSUM_IPPCSE; + else + rxcsum &= ~IXGBE_RXCSUM_IPPCSE; + + IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum); + + if (hw->mac.type == ixgbe_mac_82599EB || + hw->mac.type == ixgbe_mac_X540) { + rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL); + if (rx_conf->hw_strip_crc) + rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP; + else + rdrxctl &= ~IXGBE_RDRXCTL_CRCSTRIP; + rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE; + IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl); + } + + rc = ixgbe_set_rsc(dev); + if (rc) + return rc; + + ixgbe_set_rx_function(dev); + + return 0; +} + +/* + * Initializes Transmit Unit. + */ +void __attribute__((cold)) +ixgbe_dev_tx_init(struct rte_eth_dev *dev) +{ + struct ixgbe_hw *hw; + struct ixgbe_tx_queue *txq; + uint64_t bus_addr; + uint32_t hlreg0; + uint32_t txctrl; + uint16_t i; + + PMD_INIT_FUNC_TRACE(); + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + /* Enable TX CRC (checksum offload requirement) and hw padding + * (TSO requirement) */ + hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0); + hlreg0 |= (IXGBE_HLREG0_TXCRCEN | IXGBE_HLREG0_TXPADEN); + IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0); + + /* Setup the Base and Length of the Tx Descriptor Rings */ + for (i = 0; i < dev->data->nb_tx_queues; i++) { + txq = dev->data->tx_queues[i]; + + bus_addr = txq->tx_ring_phys_addr; + IXGBE_WRITE_REG(hw, IXGBE_TDBAL(txq->reg_idx), + (uint32_t)(bus_addr & 0x00000000ffffffffULL)); + IXGBE_WRITE_REG(hw, IXGBE_TDBAH(txq->reg_idx), + (uint32_t)(bus_addr >> 32)); + IXGBE_WRITE_REG(hw, IXGBE_TDLEN(txq->reg_idx), + txq->nb_tx_desc * sizeof(union ixgbe_adv_tx_desc)); + /* Setup the HW Tx Head and TX Tail descriptor pointers */ + IXGBE_WRITE_REG(hw, IXGBE_TDH(txq->reg_idx), 0); + IXGBE_WRITE_REG(hw, IXGBE_TDT(txq->reg_idx), 0); + + /* + * Disable Tx Head Writeback RO bit, since this hoses + * bookkeeping if things aren't delivered in order. + */ + switch (hw->mac.type) { + case ixgbe_mac_82598EB: + txctrl = IXGBE_READ_REG(hw, + IXGBE_DCA_TXCTRL(txq->reg_idx)); + txctrl &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN; + IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL(txq->reg_idx), + txctrl); + break; + + case ixgbe_mac_82599EB: + case ixgbe_mac_X540: + case ixgbe_mac_X550: + case ixgbe_mac_X550EM_x: + case ixgbe_mac_X550EM_a: + default: + txctrl = IXGBE_READ_REG(hw, + IXGBE_DCA_TXCTRL_82599(txq->reg_idx)); + txctrl &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN; + IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(txq->reg_idx), + txctrl); + break; + } + } + + /* Device configured with multiple TX queues. */ + ixgbe_dev_mq_tx_configure(dev); +} + +/* + * Set up link for 82599 loopback mode Tx->Rx. + */ +static inline void __attribute__((cold)) +ixgbe_setup_loopback_link_82599(struct ixgbe_hw *hw) +{ + PMD_INIT_FUNC_TRACE(); + + if (ixgbe_verify_lesm_fw_enabled_82599(hw)) { + if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM) != + IXGBE_SUCCESS) { + PMD_INIT_LOG(ERR, "Could not enable loopback mode"); + /* ignore error */ + return; + } + } + + /* Restart link */ + IXGBE_WRITE_REG(hw, + IXGBE_AUTOC, + IXGBE_AUTOC_LMS_10G_LINK_NO_AN | IXGBE_AUTOC_FLU); + ixgbe_reset_pipeline_82599(hw); + + hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM); + msec_delay(50); +} + + +/* + * Start Transmit and Receive Units. + */ +int __attribute__((cold)) +ixgbe_dev_rxtx_start(struct rte_eth_dev *dev) +{ + struct ixgbe_hw *hw; + struct ixgbe_tx_queue *txq; + struct ixgbe_rx_queue *rxq; + uint32_t txdctl; + uint32_t dmatxctl; + uint32_t rxctrl; + uint16_t i; + int ret = 0; + + PMD_INIT_FUNC_TRACE(); + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + for (i = 0; i < dev->data->nb_tx_queues; i++) { + txq = dev->data->tx_queues[i]; + /* Setup Transmit Threshold Registers */ + txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(txq->reg_idx)); + txdctl |= txq->pthresh & 0x7F; + txdctl |= ((txq->hthresh & 0x7F) << 8); + txdctl |= ((txq->wthresh & 0x7F) << 16); + IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(txq->reg_idx), txdctl); + } + + if (hw->mac.type != ixgbe_mac_82598EB) { + dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL); + dmatxctl |= IXGBE_DMATXCTL_TE; + IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl); + } + + for (i = 0; i < dev->data->nb_tx_queues; i++) { + txq = dev->data->tx_queues[i]; + if (!txq->tx_deferred_start) { + ret = ixgbe_dev_tx_queue_start(dev, i); + if (ret < 0) + return ret; + } + } + + for (i = 0; i < dev->data->nb_rx_queues; i++) { + rxq = dev->data->rx_queues[i]; + if (!rxq->rx_deferred_start) { + ret = ixgbe_dev_rx_queue_start(dev, i); + if (ret < 0) + return ret; + } + } + + /* Enable Receive engine */ + rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); + if (hw->mac.type == ixgbe_mac_82598EB) + rxctrl |= IXGBE_RXCTRL_DMBYPS; + rxctrl |= IXGBE_RXCTRL_RXEN; + hw->mac.ops.enable_rx_dma(hw, rxctrl); + + /* If loopback mode is enabled for 82599, set up the link accordingly */ + if (hw->mac.type == ixgbe_mac_82599EB && + dev->data->dev_conf.lpbk_mode == IXGBE_LPBK_82599_TX_RX) + ixgbe_setup_loopback_link_82599(hw); + + return 0; +} + +/* + * Start Receive Units for specified queue. + */ +int __attribute__((cold)) +ixgbe_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id) +{ + struct ixgbe_hw *hw; + struct ixgbe_rx_queue *rxq; + uint32_t rxdctl; + int poll_ms; + + PMD_INIT_FUNC_TRACE(); + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + if (rx_queue_id < dev->data->nb_rx_queues) { + rxq = dev->data->rx_queues[rx_queue_id]; + + /* Allocate buffers for descriptor rings */ + if (ixgbe_alloc_rx_queue_mbufs(rxq) != 0) { + PMD_INIT_LOG(ERR, "Could not alloc mbuf for queue:%d", + rx_queue_id); + return -1; + } + rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(rxq->reg_idx)); + rxdctl |= IXGBE_RXDCTL_ENABLE; + IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(rxq->reg_idx), rxdctl); + + /* Wait until RX Enable ready */ + poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS; + do { + rte_delay_ms(1); + rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(rxq->reg_idx)); + } while (--poll_ms && !(rxdctl & IXGBE_RXDCTL_ENABLE)); + if (!poll_ms) + PMD_INIT_LOG(ERR, "Could not enable Rx Queue %d", + rx_queue_id); + rte_wmb(); + IXGBE_WRITE_REG(hw, IXGBE_RDH(rxq->reg_idx), 0); + IXGBE_WRITE_REG(hw, IXGBE_RDT(rxq->reg_idx), rxq->nb_rx_desc - 1); + dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED; + } else + return -1; + + return 0; +} + +/* + * Stop Receive Units for specified queue. + */ +int __attribute__((cold)) +ixgbe_dev_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id) +{ + struct ixgbe_hw *hw; + struct ixgbe_adapter *adapter = + (struct ixgbe_adapter *)dev->data->dev_private; + struct ixgbe_rx_queue *rxq; + uint32_t rxdctl; + int poll_ms; + + PMD_INIT_FUNC_TRACE(); + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + if (rx_queue_id < dev->data->nb_rx_queues) { + rxq = dev->data->rx_queues[rx_queue_id]; + + rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(rxq->reg_idx)); + rxdctl &= ~IXGBE_RXDCTL_ENABLE; + IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(rxq->reg_idx), rxdctl); + + /* Wait until RX Enable ready */ + poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS; + do { + rte_delay_ms(1); + rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(rxq->reg_idx)); + } while (--poll_ms && (rxdctl | IXGBE_RXDCTL_ENABLE)); + if (!poll_ms) + PMD_INIT_LOG(ERR, "Could not disable Rx Queue %d", + rx_queue_id); + + rte_delay_us(RTE_IXGBE_WAIT_100_US); + + ixgbe_rx_queue_release_mbufs(rxq); + ixgbe_reset_rx_queue(adapter, rxq); + dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED; + } else + return -1; + + return 0; +} + + +/* + * Start Transmit Units for specified queue. + */ +int __attribute__((cold)) +ixgbe_dev_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id) +{ + struct ixgbe_hw *hw; + struct ixgbe_tx_queue *txq; + uint32_t txdctl; + int poll_ms; + + PMD_INIT_FUNC_TRACE(); + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + if (tx_queue_id < dev->data->nb_tx_queues) { + txq = dev->data->tx_queues[tx_queue_id]; + txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(txq->reg_idx)); + txdctl |= IXGBE_TXDCTL_ENABLE; + IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(txq->reg_idx), txdctl); + + /* Wait until TX Enable ready */ + if (hw->mac.type == ixgbe_mac_82599EB) { + poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS; + do { + rte_delay_ms(1); + txdctl = IXGBE_READ_REG(hw, + IXGBE_TXDCTL(txq->reg_idx)); + } while (--poll_ms && !(txdctl & IXGBE_TXDCTL_ENABLE)); + if (!poll_ms) + PMD_INIT_LOG(ERR, "Could not enable " + "Tx Queue %d", tx_queue_id); + } + rte_wmb(); + IXGBE_WRITE_REG(hw, IXGBE_TDH(txq->reg_idx), 0); + IXGBE_WRITE_REG(hw, IXGBE_TDT(txq->reg_idx), 0); + dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED; + } else + return -1; + + return 0; +} + +/* + * Stop Transmit Units for specified queue. + */ +int __attribute__((cold)) +ixgbe_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id) +{ + struct ixgbe_hw *hw; + struct ixgbe_tx_queue *txq; + uint32_t txdctl; + uint32_t txtdh, txtdt; + int poll_ms; + + PMD_INIT_FUNC_TRACE(); + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + if (tx_queue_id < dev->data->nb_tx_queues) { + txq = dev->data->tx_queues[tx_queue_id]; + + /* Wait until TX queue is empty */ + if (hw->mac.type == ixgbe_mac_82599EB) { + poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS; + do { + rte_delay_us(RTE_IXGBE_WAIT_100_US); + txtdh = IXGBE_READ_REG(hw, + IXGBE_TDH(txq->reg_idx)); + txtdt = IXGBE_READ_REG(hw, + IXGBE_TDT(txq->reg_idx)); + } while (--poll_ms && (txtdh != txtdt)); + if (!poll_ms) + PMD_INIT_LOG(ERR, "Tx Queue %d is not empty " + "when stopping.", tx_queue_id); + } + + txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(txq->reg_idx)); + txdctl &= ~IXGBE_TXDCTL_ENABLE; + IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(txq->reg_idx), txdctl); + + /* Wait until TX Enable ready */ + if (hw->mac.type == ixgbe_mac_82599EB) { + poll_ms = RTE_IXGBE_REGISTER_POLL_WAIT_10_MS; + do { + rte_delay_ms(1); + txdctl = IXGBE_READ_REG(hw, + IXGBE_TXDCTL(txq->reg_idx)); + } while (--poll_ms && (txdctl | IXGBE_TXDCTL_ENABLE)); + if (!poll_ms) + PMD_INIT_LOG(ERR, "Could not disable " + "Tx Queue %d", tx_queue_id); + } + + if (txq->ops != NULL) { + txq->ops->release_mbufs(txq); + txq->ops->reset(txq); + } + dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED; + } else + return -1; + + return 0; +} + +void +ixgbe_rxq_info_get(struct rte_eth_dev *dev, uint16_t queue_id, + struct rte_eth_rxq_info *qinfo) +{ + struct ixgbe_rx_queue *rxq; + + rxq = dev->data->rx_queues[queue_id]; + + qinfo->mp = rxq->mb_pool; + qinfo->scattered_rx = dev->data->scattered_rx; + qinfo->nb_desc = rxq->nb_rx_desc; + + qinfo->conf.rx_free_thresh = rxq->rx_free_thresh; + qinfo->conf.rx_drop_en = rxq->drop_en; + qinfo->conf.rx_deferred_start = rxq->rx_deferred_start; +} + +void +ixgbe_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id, + struct rte_eth_txq_info *qinfo) +{ + struct ixgbe_tx_queue *txq; + + txq = dev->data->tx_queues[queue_id]; + + qinfo->nb_desc = txq->nb_tx_desc; + + qinfo->conf.tx_thresh.pthresh = txq->pthresh; + qinfo->conf.tx_thresh.hthresh = txq->hthresh; + qinfo->conf.tx_thresh.wthresh = txq->wthresh; + + qinfo->conf.tx_free_thresh = txq->tx_free_thresh; + qinfo->conf.tx_rs_thresh = txq->tx_rs_thresh; + qinfo->conf.txq_flags = txq->txq_flags; + qinfo->conf.tx_deferred_start = txq->tx_deferred_start; +} + +/* + * [VF] Initializes Receive Unit. + */ +int __attribute__((cold)) +ixgbevf_dev_rx_init(struct rte_eth_dev *dev) +{ + struct ixgbe_hw *hw; + struct ixgbe_rx_queue *rxq; + uint64_t bus_addr; + uint32_t srrctl, psrtype = 0; + uint16_t buf_size; + uint16_t i; + int ret; + + PMD_INIT_FUNC_TRACE(); + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + if (rte_is_power_of_2(dev->data->nb_rx_queues) == 0) { + PMD_INIT_LOG(ERR, "The number of Rx queue invalid, " + "it should be power of 2"); + return -1; + } + + if (dev->data->nb_rx_queues > hw->mac.max_rx_queues) { + PMD_INIT_LOG(ERR, "The number of Rx queue invalid, " + "it should be equal to or less than %d", + hw->mac.max_rx_queues); + return -1; + } + + /* + * When the VF driver issues a IXGBE_VF_RESET request, the PF driver + * disables the VF receipt of packets if the PF MTU is > 1500. + * This is done to deal with 82599 limitations that imposes + * the PF and all VFs to share the same MTU. + * Then, the PF driver enables again the VF receipt of packet when + * the VF driver issues a IXGBE_VF_SET_LPE request. + * In the meantime, the VF device cannot be used, even if the VF driver + * and the Guest VM network stack are ready to accept packets with a + * size up to the PF MTU. + * As a work-around to this PF behaviour, force the call to + * ixgbevf_rlpml_set_vf even if jumbo frames are not used. This way, + * VF packets received can work in all cases. + */ + ixgbevf_rlpml_set_vf(hw, + (uint16_t)dev->data->dev_conf.rxmode.max_rx_pkt_len); + + /* Setup RX queues */ + for (i = 0; i < dev->data->nb_rx_queues; i++) { + rxq = dev->data->rx_queues[i]; + + /* Allocate buffers for descriptor rings */ + ret = ixgbe_alloc_rx_queue_mbufs(rxq); + if (ret) + return ret; + + /* Setup the Base and Length of the Rx Descriptor Rings */ + bus_addr = rxq->rx_ring_phys_addr; + + IXGBE_WRITE_REG(hw, IXGBE_VFRDBAL(i), + (uint32_t)(bus_addr & 0x00000000ffffffffULL)); + IXGBE_WRITE_REG(hw, IXGBE_VFRDBAH(i), + (uint32_t)(bus_addr >> 32)); + IXGBE_WRITE_REG(hw, IXGBE_VFRDLEN(i), + rxq->nb_rx_desc * sizeof(union ixgbe_adv_rx_desc)); + IXGBE_WRITE_REG(hw, IXGBE_VFRDH(i), 0); + IXGBE_WRITE_REG(hw, IXGBE_VFRDT(i), 0); + + + /* Configure the SRRCTL register */ +#ifdef RTE_HEADER_SPLIT_ENABLE + /* + * Configure Header Split + */ + if (dev->data->dev_conf.rxmode.header_split) { + srrctl = ((dev->data->dev_conf.rxmode.split_hdr_size << + IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) & + IXGBE_SRRCTL_BSIZEHDR_MASK); + srrctl |= IXGBE_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; + } else +#endif + srrctl = IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; + + /* Set if packets are dropped when no descriptors available */ + if (rxq->drop_en) + srrctl |= IXGBE_SRRCTL_DROP_EN; + + /* + * Configure the RX buffer size in the BSIZEPACKET field of + * the SRRCTL register of the queue. + * The value is in 1 KB resolution. Valid values can be from + * 1 KB to 16 KB. + */ + buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mb_pool) - + RTE_PKTMBUF_HEADROOM); + srrctl |= ((buf_size >> IXGBE_SRRCTL_BSIZEPKT_SHIFT) & + IXGBE_SRRCTL_BSIZEPKT_MASK); + + /* + * VF modification to write virtual function SRRCTL register + */ + IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(i), srrctl); + + buf_size = (uint16_t) ((srrctl & IXGBE_SRRCTL_BSIZEPKT_MASK) << + IXGBE_SRRCTL_BSIZEPKT_SHIFT); + + if (dev->data->dev_conf.rxmode.enable_scatter || + /* It adds dual VLAN length for supporting dual VLAN */ + (dev->data->dev_conf.rxmode.max_rx_pkt_len + + 2 * IXGBE_VLAN_TAG_SIZE) > buf_size) { + if (!dev->data->scattered_rx) + PMD_INIT_LOG(DEBUG, "forcing scatter mode"); + dev->data->scattered_rx = 1; + } + } + +#ifdef RTE_HEADER_SPLIT_ENABLE + if (dev->data->dev_conf.rxmode.header_split) + /* Must setup the PSRTYPE register */ + psrtype = IXGBE_PSRTYPE_TCPHDR | + IXGBE_PSRTYPE_UDPHDR | + IXGBE_PSRTYPE_IPV4HDR | + IXGBE_PSRTYPE_IPV6HDR; +#endif + + /* Set RQPL for VF RSS according to max Rx queue */ + psrtype |= (dev->data->nb_rx_queues >> 1) << + IXGBE_PSRTYPE_RQPL_SHIFT; + IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, psrtype); + + ixgbe_set_rx_function(dev); + + return 0; +} + +/* + * [VF] Initializes Transmit Unit. + */ +void __attribute__((cold)) +ixgbevf_dev_tx_init(struct rte_eth_dev *dev) +{ + struct ixgbe_hw *hw; + struct ixgbe_tx_queue *txq; + uint64_t bus_addr; + uint32_t txctrl; + uint16_t i; + + PMD_INIT_FUNC_TRACE(); + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + /* Setup the Base and Length of the Tx Descriptor Rings */ + for (i = 0; i < dev->data->nb_tx_queues; i++) { + txq = dev->data->tx_queues[i]; + bus_addr = txq->tx_ring_phys_addr; + IXGBE_WRITE_REG(hw, IXGBE_VFTDBAL(i), + (uint32_t)(bus_addr & 0x00000000ffffffffULL)); + IXGBE_WRITE_REG(hw, IXGBE_VFTDBAH(i), + (uint32_t)(bus_addr >> 32)); + IXGBE_WRITE_REG(hw, IXGBE_VFTDLEN(i), + txq->nb_tx_desc * sizeof(union ixgbe_adv_tx_desc)); + /* Setup the HW Tx Head and TX Tail descriptor pointers */ + IXGBE_WRITE_REG(hw, IXGBE_VFTDH(i), 0); + IXGBE_WRITE_REG(hw, IXGBE_VFTDT(i), 0); + + /* + * Disable Tx Head Writeback RO bit, since this hoses + * bookkeeping if things aren't delivered in order. + */ + txctrl = IXGBE_READ_REG(hw, + IXGBE_VFDCA_TXCTRL(i)); + txctrl &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN; + IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(i), + txctrl); + } +} + +/* + * [VF] Start Transmit and Receive Units. + */ +void __attribute__((cold)) +ixgbevf_dev_rxtx_start(struct rte_eth_dev *dev) +{ + struct ixgbe_hw *hw; + struct ixgbe_tx_queue *txq; + struct ixgbe_rx_queue *rxq; + uint32_t txdctl; + uint32_t rxdctl; + uint16_t i; + int poll_ms; + + PMD_INIT_FUNC_TRACE(); + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + + for (i = 0; i < dev->data->nb_tx_queues; i++) { + txq = dev->data->tx_queues[i]; + /* Setup Transmit Threshold Registers */ + txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i)); + txdctl |= txq->pthresh & 0x7F; + txdctl |= ((txq->hthresh & 0x7F) << 8); + txdctl |= ((txq->wthresh & 0x7F) << 16); + IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), txdctl); + } + + for (i = 0; i < dev->data->nb_tx_queues; i++) { + + txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i)); + txdctl |= IXGBE_TXDCTL_ENABLE; + IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), txdctl); + + poll_ms = 10; + /* Wait until TX Enable ready */ + do { + rte_delay_ms(1); + txdctl = IXGBE_READ_REG(hw, IXGBE_VFTXDCTL(i)); + } while (--poll_ms && !(txdctl & IXGBE_TXDCTL_ENABLE)); + if (!poll_ms) + PMD_INIT_LOG(ERR, "Could not enable Tx Queue %d", i); + } + for (i = 0; i < dev->data->nb_rx_queues; i++) { + + rxq = dev->data->rx_queues[i]; + + rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i)); + rxdctl |= IXGBE_RXDCTL_ENABLE; + IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), rxdctl); + + /* Wait until RX Enable ready */ + poll_ms = 10; + do { + rte_delay_ms(1); + rxdctl = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(i)); + } while (--poll_ms && !(rxdctl & IXGBE_RXDCTL_ENABLE)); + if (!poll_ms) + PMD_INIT_LOG(ERR, "Could not enable Rx Queue %d", i); + rte_wmb(); + IXGBE_WRITE_REG(hw, IXGBE_VFRDT(i), rxq->nb_rx_desc - 1); + + } +} + +/* Stubs needed for linkage when CONFIG_RTE_IXGBE_INC_VECTOR is set to 'n' */ +int __attribute__((weak)) +ixgbe_rx_vec_dev_conf_condition_check(struct rte_eth_dev __rte_unused *dev) +{ + return -1; +} + +uint16_t __attribute__((weak)) +ixgbe_recv_pkts_vec( + void __rte_unused *rx_queue, + struct rte_mbuf __rte_unused **rx_pkts, + uint16_t __rte_unused nb_pkts) +{ + return 0; +} + +uint16_t __attribute__((weak)) +ixgbe_recv_scattered_pkts_vec( + void __rte_unused *rx_queue, + struct rte_mbuf __rte_unused **rx_pkts, + uint16_t __rte_unused nb_pkts) +{ + return 0; +} + +int __attribute__((weak)) +ixgbe_rxq_vec_setup(struct ixgbe_rx_queue __rte_unused *rxq) +{ + return -1; +} |