diff options
Diffstat (limited to 'drivers/net/thunderx/nicvf_rxtx.c')
| -rw-r--r-- | drivers/net/thunderx/nicvf_rxtx.c | 599 |
1 files changed, 599 insertions, 0 deletions
diff --git a/drivers/net/thunderx/nicvf_rxtx.c b/drivers/net/thunderx/nicvf_rxtx.c new file mode 100644 index 00000000..eb51a72c --- /dev/null +++ b/drivers/net/thunderx/nicvf_rxtx.c @@ -0,0 +1,599 @@ +/* + * BSD LICENSE + * + * Copyright (C) Cavium networks Ltd. 2016. + * + * 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 Cavium networks 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 <unistd.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> + +#include <rte_atomic.h> +#include <rte_branch_prediction.h> +#include <rte_byteorder.h> +#include <rte_common.h> +#include <rte_cycles.h> +#include <rte_errno.h> +#include <rte_ethdev.h> +#include <rte_ether.h> +#include <rte_log.h> +#include <rte_mbuf.h> +#include <rte_prefetch.h> + +#include "base/nicvf_plat.h" + +#include "nicvf_ethdev.h" +#include "nicvf_rxtx.h" +#include "nicvf_logs.h" + +static inline void __hot +fill_sq_desc_header(union sq_entry_t *entry, struct rte_mbuf *pkt) +{ + /* Local variable sqe to avoid read from sq desc memory*/ + union sq_entry_t sqe; + uint64_t ol_flags; + + /* Fill SQ header descriptor */ + sqe.buff[0] = 0; + sqe.hdr.subdesc_type = SQ_DESC_TYPE_HEADER; + /* Number of sub-descriptors following this one */ + sqe.hdr.subdesc_cnt = pkt->nb_segs; + sqe.hdr.tot_len = pkt->pkt_len; + + ol_flags = pkt->ol_flags & NICVF_TX_OFFLOAD_MASK; + if (unlikely(ol_flags)) { + /* L4 cksum */ + if (ol_flags & PKT_TX_TCP_CKSUM) + sqe.hdr.csum_l4 = SEND_L4_CSUM_TCP; + else if (ol_flags & PKT_TX_UDP_CKSUM) + sqe.hdr.csum_l4 = SEND_L4_CSUM_UDP; + else + sqe.hdr.csum_l4 = SEND_L4_CSUM_DISABLE; + sqe.hdr.l4_offset = pkt->l3_len + pkt->l2_len; + + /* L3 cksum */ + if (ol_flags & PKT_TX_IP_CKSUM) { + sqe.hdr.csum_l3 = 1; + sqe.hdr.l3_offset = pkt->l2_len; + } + } + + entry->buff[0] = sqe.buff[0]; +} + +void __hot +nicvf_single_pool_free_xmited_buffers(struct nicvf_txq *sq) +{ + int j = 0; + uint32_t curr_head; + uint32_t head = sq->head; + struct rte_mbuf **txbuffs = sq->txbuffs; + void *obj_p[NICVF_MAX_TX_FREE_THRESH] __rte_cache_aligned; + + curr_head = nicvf_addr_read(sq->sq_head) >> 4; + while (head != curr_head) { + if (txbuffs[head]) + obj_p[j++] = txbuffs[head]; + + head = (head + 1) & sq->qlen_mask; + } + + rte_mempool_put_bulk(sq->pool, obj_p, j); + sq->head = curr_head; + sq->xmit_bufs -= j; + NICVF_TX_ASSERT(sq->xmit_bufs >= 0); +} + +void __hot +nicvf_multi_pool_free_xmited_buffers(struct nicvf_txq *sq) +{ + uint32_t n = 0; + uint32_t curr_head; + uint32_t head = sq->head; + struct rte_mbuf **txbuffs = sq->txbuffs; + + curr_head = nicvf_addr_read(sq->sq_head) >> 4; + while (head != curr_head) { + if (txbuffs[head]) { + rte_pktmbuf_free_seg(txbuffs[head]); + n++; + } + + head = (head + 1) & sq->qlen_mask; + } + + sq->head = curr_head; + sq->xmit_bufs -= n; + NICVF_TX_ASSERT(sq->xmit_bufs >= 0); +} + +static inline uint32_t __hot +nicvf_free_tx_desc(struct nicvf_txq *sq) +{ + return ((sq->head - sq->tail - 1) & sq->qlen_mask); +} + +/* Send Header + Packet */ +#define TX_DESC_PER_PKT 2 + +static inline uint32_t __hot +nicvf_free_xmitted_buffers(struct nicvf_txq *sq, struct rte_mbuf **tx_pkts, + uint16_t nb_pkts) +{ + uint32_t free_desc = nicvf_free_tx_desc(sq); + + if (free_desc < nb_pkts * TX_DESC_PER_PKT || + sq->xmit_bufs > sq->tx_free_thresh) { + if (unlikely(sq->pool == NULL)) + sq->pool = tx_pkts[0]->pool; + + sq->pool_free(sq); + /* Freed now, let see the number of free descs again */ + free_desc = nicvf_free_tx_desc(sq); + } + return free_desc; +} + +uint16_t __hot +nicvf_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts) +{ + int i; + uint32_t free_desc; + uint32_t tail; + struct nicvf_txq *sq = tx_queue; + union sq_entry_t *desc_ptr = sq->desc; + struct rte_mbuf **txbuffs = sq->txbuffs; + struct rte_mbuf *pkt; + uint32_t qlen_mask = sq->qlen_mask; + + tail = sq->tail; + free_desc = nicvf_free_xmitted_buffers(sq, tx_pkts, nb_pkts); + + for (i = 0; i < nb_pkts && (int)free_desc >= TX_DESC_PER_PKT; i++) { + pkt = tx_pkts[i]; + + txbuffs[tail] = NULL; + fill_sq_desc_header(desc_ptr + tail, pkt); + tail = (tail + 1) & qlen_mask; + + txbuffs[tail] = pkt; + fill_sq_desc_gather(desc_ptr + tail, pkt); + tail = (tail + 1) & qlen_mask; + free_desc -= TX_DESC_PER_PKT; + } + + sq->tail = tail; + sq->xmit_bufs += i; + rte_wmb(); + + /* Inform HW to xmit the packets */ + nicvf_addr_write(sq->sq_door, i * TX_DESC_PER_PKT); + return i; +} + +uint16_t __hot +nicvf_xmit_pkts_multiseg(void *tx_queue, struct rte_mbuf **tx_pkts, + uint16_t nb_pkts) +{ + int i, k; + uint32_t used_desc, next_used_desc, used_bufs, free_desc, tail; + struct nicvf_txq *sq = tx_queue; + union sq_entry_t *desc_ptr = sq->desc; + struct rte_mbuf **txbuffs = sq->txbuffs; + struct rte_mbuf *pkt, *seg; + uint32_t qlen_mask = sq->qlen_mask; + uint16_t nb_segs; + + tail = sq->tail; + used_desc = 0; + used_bufs = 0; + + free_desc = nicvf_free_xmitted_buffers(sq, tx_pkts, nb_pkts); + + for (i = 0; i < nb_pkts; i++) { + pkt = tx_pkts[i]; + + nb_segs = pkt->nb_segs; + + next_used_desc = used_desc + nb_segs + 1; + if (next_used_desc > free_desc) + break; + used_desc = next_used_desc; + used_bufs += nb_segs; + + txbuffs[tail] = NULL; + fill_sq_desc_header(desc_ptr + tail, pkt); + tail = (tail + 1) & qlen_mask; + + txbuffs[tail] = pkt; + fill_sq_desc_gather(desc_ptr + tail, pkt); + tail = (tail + 1) & qlen_mask; + + seg = pkt->next; + for (k = 1; k < nb_segs; k++) { + txbuffs[tail] = seg; + fill_sq_desc_gather(desc_ptr + tail, seg); + tail = (tail + 1) & qlen_mask; + seg = seg->next; + } + } + + sq->tail = tail; + sq->xmit_bufs += used_bufs; + rte_wmb(); + + /* Inform HW to xmit the packets */ + nicvf_addr_write(sq->sq_door, used_desc); + return nb_pkts; +} + +static const uint32_t ptype_table[16][16] __rte_cache_aligned = { + [L3_NONE][L4_NONE] = RTE_PTYPE_UNKNOWN, + [L3_NONE][L4_IPSEC_ESP] = RTE_PTYPE_UNKNOWN, + [L3_NONE][L4_IPFRAG] = RTE_PTYPE_L4_FRAG, + [L3_NONE][L4_IPCOMP] = RTE_PTYPE_UNKNOWN, + [L3_NONE][L4_TCP] = RTE_PTYPE_L4_TCP, + [L3_NONE][L4_UDP_PASS1] = RTE_PTYPE_L4_UDP, + [L3_NONE][L4_GRE] = RTE_PTYPE_TUNNEL_GRE, + [L3_NONE][L4_UDP_PASS2] = RTE_PTYPE_L4_UDP, + [L3_NONE][L4_UDP_GENEVE] = RTE_PTYPE_TUNNEL_GENEVE, + [L3_NONE][L4_UDP_VXLAN] = RTE_PTYPE_TUNNEL_VXLAN, + [L3_NONE][L4_NVGRE] = RTE_PTYPE_TUNNEL_NVGRE, + + [L3_IPV4][L4_NONE] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_UNKNOWN, + [L3_IPV4][L4_IPSEC_ESP] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L3_IPV4, + [L3_IPV4][L4_IPFRAG] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_FRAG, + [L3_IPV4][L4_IPCOMP] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_UNKNOWN, + [L3_IPV4][L4_TCP] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_TCP, + [L3_IPV4][L4_UDP_PASS1] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_UDP, + [L3_IPV4][L4_GRE] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_GRE, + [L3_IPV4][L4_UDP_PASS2] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_UDP, + [L3_IPV4][L4_UDP_GENEVE] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_GENEVE, + [L3_IPV4][L4_UDP_VXLAN] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_VXLAN, + [L3_IPV4][L4_NVGRE] = RTE_PTYPE_L3_IPV4 | RTE_PTYPE_TUNNEL_NVGRE, + + [L3_IPV4_OPT][L4_NONE] = RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_UNKNOWN, + [L3_IPV4_OPT][L4_IPSEC_ESP] = RTE_PTYPE_L3_IPV4_EXT | + RTE_PTYPE_L3_IPV4, + [L3_IPV4_OPT][L4_IPFRAG] = RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_FRAG, + [L3_IPV4_OPT][L4_IPCOMP] = RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_UNKNOWN, + [L3_IPV4_OPT][L4_TCP] = RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_TCP, + [L3_IPV4_OPT][L4_UDP_PASS1] = RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_UDP, + [L3_IPV4_OPT][L4_GRE] = RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_TUNNEL_GRE, + [L3_IPV4_OPT][L4_UDP_PASS2] = RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_UDP, + [L3_IPV4_OPT][L4_UDP_GENEVE] = RTE_PTYPE_L3_IPV4_EXT | + RTE_PTYPE_TUNNEL_GENEVE, + [L3_IPV4_OPT][L4_UDP_VXLAN] = RTE_PTYPE_L3_IPV4_EXT | + RTE_PTYPE_TUNNEL_VXLAN, + [L3_IPV4_OPT][L4_NVGRE] = RTE_PTYPE_L3_IPV4_EXT | + RTE_PTYPE_TUNNEL_NVGRE, + + [L3_IPV6][L4_NONE] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_UNKNOWN, + [L3_IPV6][L4_IPSEC_ESP] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L3_IPV4, + [L3_IPV6][L4_IPFRAG] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_FRAG, + [L3_IPV6][L4_IPCOMP] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_UNKNOWN, + [L3_IPV6][L4_TCP] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_TCP, + [L3_IPV6][L4_UDP_PASS1] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP, + [L3_IPV6][L4_GRE] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_TUNNEL_GRE, + [L3_IPV6][L4_UDP_PASS2] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP, + [L3_IPV6][L4_UDP_GENEVE] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_TUNNEL_GENEVE, + [L3_IPV6][L4_UDP_VXLAN] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_TUNNEL_VXLAN, + [L3_IPV6][L4_NVGRE] = RTE_PTYPE_L3_IPV6 | RTE_PTYPE_TUNNEL_NVGRE, + + [L3_IPV6_OPT][L4_NONE] = RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_UNKNOWN, + [L3_IPV6_OPT][L4_IPSEC_ESP] = RTE_PTYPE_L3_IPV6_EXT | + RTE_PTYPE_L3_IPV4, + [L3_IPV6_OPT][L4_IPFRAG] = RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_FRAG, + [L3_IPV6_OPT][L4_IPCOMP] = RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_UNKNOWN, + [L3_IPV6_OPT][L4_TCP] = RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_TCP, + [L3_IPV6_OPT][L4_UDP_PASS1] = RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_UDP, + [L3_IPV6_OPT][L4_GRE] = RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_TUNNEL_GRE, + [L3_IPV6_OPT][L4_UDP_PASS2] = RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_UDP, + [L3_IPV6_OPT][L4_UDP_GENEVE] = RTE_PTYPE_L3_IPV6_EXT | + RTE_PTYPE_TUNNEL_GENEVE, + [L3_IPV6_OPT][L4_UDP_VXLAN] = RTE_PTYPE_L3_IPV6_EXT | + RTE_PTYPE_TUNNEL_VXLAN, + [L3_IPV6_OPT][L4_NVGRE] = RTE_PTYPE_L3_IPV6_EXT | + RTE_PTYPE_TUNNEL_NVGRE, + + [L3_ET_STOP][L4_NONE] = RTE_PTYPE_UNKNOWN, + [L3_ET_STOP][L4_IPSEC_ESP] = RTE_PTYPE_UNKNOWN, + [L3_ET_STOP][L4_IPFRAG] = RTE_PTYPE_L4_FRAG, + [L3_ET_STOP][L4_IPCOMP] = RTE_PTYPE_UNKNOWN, + [L3_ET_STOP][L4_TCP] = RTE_PTYPE_L4_TCP, + [L3_ET_STOP][L4_UDP_PASS1] = RTE_PTYPE_L4_UDP, + [L3_ET_STOP][L4_GRE] = RTE_PTYPE_TUNNEL_GRE, + [L3_ET_STOP][L4_UDP_PASS2] = RTE_PTYPE_L4_UDP, + [L3_ET_STOP][L4_UDP_GENEVE] = RTE_PTYPE_TUNNEL_GENEVE, + [L3_ET_STOP][L4_UDP_VXLAN] = RTE_PTYPE_TUNNEL_VXLAN, + [L3_ET_STOP][L4_NVGRE] = RTE_PTYPE_TUNNEL_NVGRE, + + [L3_OTHER][L4_NONE] = RTE_PTYPE_UNKNOWN, + [L3_OTHER][L4_IPSEC_ESP] = RTE_PTYPE_UNKNOWN, + [L3_OTHER][L4_IPFRAG] = RTE_PTYPE_L4_FRAG, + [L3_OTHER][L4_IPCOMP] = RTE_PTYPE_UNKNOWN, + [L3_OTHER][L4_TCP] = RTE_PTYPE_L4_TCP, + [L3_OTHER][L4_UDP_PASS1] = RTE_PTYPE_L4_UDP, + [L3_OTHER][L4_GRE] = RTE_PTYPE_TUNNEL_GRE, + [L3_OTHER][L4_UDP_PASS2] = RTE_PTYPE_L4_UDP, + [L3_OTHER][L4_UDP_GENEVE] = RTE_PTYPE_TUNNEL_GENEVE, + [L3_OTHER][L4_UDP_VXLAN] = RTE_PTYPE_TUNNEL_VXLAN, + [L3_OTHER][L4_NVGRE] = RTE_PTYPE_TUNNEL_NVGRE, +}; + +static inline uint32_t __hot +nicvf_rx_classify_pkt(cqe_rx_word0_t cqe_rx_w0) +{ + return ptype_table[cqe_rx_w0.l3_type][cqe_rx_w0.l4_type]; +} + +static inline int __hot +nicvf_fill_rbdr(struct nicvf_rxq *rxq, int to_fill) +{ + int i; + uint32_t ltail, next_tail; + struct nicvf_rbdr *rbdr = rxq->shared_rbdr; + uint64_t mbuf_phys_off = rxq->mbuf_phys_off; + struct rbdr_entry_t *desc = rbdr->desc; + uint32_t qlen_mask = rbdr->qlen_mask; + uintptr_t door = rbdr->rbdr_door; + void *obj_p[NICVF_MAX_RX_FREE_THRESH] __rte_cache_aligned; + + if (unlikely(rte_mempool_get_bulk(rxq->pool, obj_p, to_fill) < 0)) { + rxq->nic->eth_dev->data->rx_mbuf_alloc_failed += to_fill; + return 0; + } + + NICVF_RX_ASSERT((unsigned int)to_fill <= (qlen_mask - + (nicvf_addr_read(rbdr->rbdr_status) & NICVF_RBDR_COUNT_MASK))); + + next_tail = __atomic_fetch_add(&rbdr->next_tail, to_fill, + __ATOMIC_ACQUIRE); + ltail = next_tail; + for (i = 0; i < to_fill; i++) { + struct rbdr_entry_t *entry = desc + (ltail & qlen_mask); + + entry->full_addr = nicvf_mbuff_virt2phy((uintptr_t)obj_p[i], + mbuf_phys_off); + ltail++; + } + + while (__atomic_load_n(&rbdr->tail, __ATOMIC_RELAXED) != next_tail) + rte_pause(); + + __atomic_store_n(&rbdr->tail, ltail, __ATOMIC_RELEASE); + nicvf_addr_write(door, to_fill); + return to_fill; +} + +static inline int32_t __hot +nicvf_rx_pkts_to_process(struct nicvf_rxq *rxq, uint16_t nb_pkts, + int32_t available_space) +{ + if (unlikely(available_space < nb_pkts)) + rxq->available_space = nicvf_addr_read(rxq->cq_status) + & NICVF_CQ_CQE_COUNT_MASK; + + return RTE_MIN(nb_pkts, available_space); +} + +static inline void __hot +nicvf_rx_offload(cqe_rx_word0_t cqe_rx_w0, cqe_rx_word2_t cqe_rx_w2, + struct rte_mbuf *pkt) +{ + if (likely(cqe_rx_w0.rss_alg)) { + pkt->hash.rss = cqe_rx_w2.rss_tag; + pkt->ol_flags |= PKT_RX_RSS_HASH; + } +} + +uint16_t __hot +nicvf_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) +{ + uint32_t i, to_process; + struct cqe_rx_t *cqe_rx; + struct rte_mbuf *pkt; + cqe_rx_word0_t cqe_rx_w0; + cqe_rx_word1_t cqe_rx_w1; + cqe_rx_word2_t cqe_rx_w2; + cqe_rx_word3_t cqe_rx_w3; + struct nicvf_rxq *rxq = rx_queue; + union cq_entry_t *desc = rxq->desc; + const uint64_t cqe_mask = rxq->qlen_mask; + uint64_t rb0_ptr, mbuf_phys_off = rxq->mbuf_phys_off; + uint32_t cqe_head = rxq->head & cqe_mask; + int32_t available_space = rxq->available_space; + uint8_t port_id = rxq->port_id; + const uint8_t rbptr_offset = rxq->rbptr_offset; + + to_process = nicvf_rx_pkts_to_process(rxq, nb_pkts, available_space); + + for (i = 0; i < to_process; i++) { + rte_prefetch_non_temporal(&desc[cqe_head + 2]); + cqe_rx = (struct cqe_rx_t *)&desc[cqe_head]; + NICVF_RX_ASSERT(((struct cq_entry_type_t *)cqe_rx)->cqe_type + == CQE_TYPE_RX); + + NICVF_LOAD_PAIR(cqe_rx_w0.u64, cqe_rx_w1.u64, cqe_rx); + NICVF_LOAD_PAIR(cqe_rx_w2.u64, cqe_rx_w3.u64, &cqe_rx->word2); + rb0_ptr = *((uint64_t *)cqe_rx + rbptr_offset); + pkt = (struct rte_mbuf *)nicvf_mbuff_phy2virt + (rb0_ptr - cqe_rx_w1.align_pad, mbuf_phys_off); + + pkt->ol_flags = 0; + pkt->port = port_id; + pkt->data_len = cqe_rx_w3.rb0_sz; + pkt->data_off = RTE_PKTMBUF_HEADROOM + cqe_rx_w1.align_pad; + pkt->nb_segs = 1; + pkt->pkt_len = cqe_rx_w3.rb0_sz; + pkt->packet_type = nicvf_rx_classify_pkt(cqe_rx_w0); + + nicvf_rx_offload(cqe_rx_w0, cqe_rx_w2, pkt); + rte_mbuf_refcnt_set(pkt, 1); + rx_pkts[i] = pkt; + cqe_head = (cqe_head + 1) & cqe_mask; + nicvf_prefetch_store_keep(pkt); + } + + if (likely(to_process)) { + rxq->available_space -= to_process; + rxq->head = cqe_head; + nicvf_addr_write(rxq->cq_door, to_process); + rxq->recv_buffers += to_process; + if (rxq->recv_buffers > rxq->rx_free_thresh) { + rxq->recv_buffers -= nicvf_fill_rbdr(rxq, + rxq->rx_free_thresh); + NICVF_RX_ASSERT(rxq->recv_buffers >= 0); + } + } + + return to_process; +} + +static inline uint16_t __hot +nicvf_process_cq_mseg_entry(struct cqe_rx_t *cqe_rx, + uint64_t mbuf_phys_off, uint8_t port_id, + struct rte_mbuf **rx_pkt, uint8_t rbptr_offset) +{ + struct rte_mbuf *pkt, *seg, *prev; + cqe_rx_word0_t cqe_rx_w0; + cqe_rx_word1_t cqe_rx_w1; + cqe_rx_word2_t cqe_rx_w2; + uint16_t *rb_sz, nb_segs, seg_idx; + uint64_t *rb_ptr; + + NICVF_LOAD_PAIR(cqe_rx_w0.u64, cqe_rx_w1.u64, cqe_rx); + NICVF_RX_ASSERT(cqe_rx_w0.cqe_type == CQE_TYPE_RX); + cqe_rx_w2 = cqe_rx->word2; + rb_sz = &cqe_rx->word3.rb0_sz; + rb_ptr = (uint64_t *)cqe_rx + rbptr_offset; + nb_segs = cqe_rx_w0.rb_cnt; + pkt = (struct rte_mbuf *)nicvf_mbuff_phy2virt + (rb_ptr[0] - cqe_rx_w1.align_pad, mbuf_phys_off); + + pkt->ol_flags = 0; + pkt->port = port_id; + pkt->data_off = RTE_PKTMBUF_HEADROOM + cqe_rx_w1.align_pad; + pkt->nb_segs = nb_segs; + pkt->pkt_len = cqe_rx_w1.pkt_len; + pkt->data_len = rb_sz[nicvf_frag_num(0)]; + rte_mbuf_refcnt_set(pkt, 1); + pkt->packet_type = nicvf_rx_classify_pkt(cqe_rx_w0); + nicvf_rx_offload(cqe_rx_w0, cqe_rx_w2, pkt); + + *rx_pkt = pkt; + prev = pkt; + for (seg_idx = 1; seg_idx < nb_segs; seg_idx++) { + seg = (struct rte_mbuf *)nicvf_mbuff_phy2virt + (rb_ptr[seg_idx], mbuf_phys_off); + + prev->next = seg; + seg->data_len = rb_sz[nicvf_frag_num(seg_idx)]; + seg->port = port_id; + seg->data_off = RTE_PKTMBUF_HEADROOM; + rte_mbuf_refcnt_set(seg, 1); + + prev = seg; + } + prev->next = NULL; + return nb_segs; +} + +uint16_t __hot +nicvf_recv_pkts_multiseg(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) +{ + union cq_entry_t *cq_entry; + struct cqe_rx_t *cqe_rx; + struct nicvf_rxq *rxq = rx_queue; + union cq_entry_t *desc = rxq->desc; + const uint64_t cqe_mask = rxq->qlen_mask; + uint64_t mbuf_phys_off = rxq->mbuf_phys_off; + uint32_t i, to_process, cqe_head, buffers_consumed = 0; + int32_t available_space = rxq->available_space; + uint16_t nb_segs; + const uint8_t port_id = rxq->port_id; + const uint8_t rbptr_offset = rxq->rbptr_offset; + + cqe_head = rxq->head & cqe_mask; + to_process = nicvf_rx_pkts_to_process(rxq, nb_pkts, available_space); + + for (i = 0; i < to_process; i++) { + rte_prefetch_non_temporal(&desc[cqe_head + 2]); + cq_entry = &desc[cqe_head]; + cqe_rx = (struct cqe_rx_t *)cq_entry; + nb_segs = nicvf_process_cq_mseg_entry(cqe_rx, mbuf_phys_off, + port_id, rx_pkts + i, rbptr_offset); + buffers_consumed += nb_segs; + cqe_head = (cqe_head + 1) & cqe_mask; + nicvf_prefetch_store_keep(rx_pkts[i]); + } + + if (likely(to_process)) { + rxq->available_space -= to_process; + rxq->head = cqe_head; + nicvf_addr_write(rxq->cq_door, to_process); + rxq->recv_buffers += buffers_consumed; + if (rxq->recv_buffers > rxq->rx_free_thresh) { + rxq->recv_buffers -= + nicvf_fill_rbdr(rxq, rxq->rx_free_thresh); + NICVF_RX_ASSERT(rxq->recv_buffers >= 0); + } + } + + return to_process; +} + +uint32_t +nicvf_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t queue_idx) +{ + struct nicvf_rxq *rxq; + + rxq = dev->data->rx_queues[queue_idx]; + return nicvf_addr_read(rxq->cq_status) & NICVF_CQ_CQE_COUNT_MASK; +} + +uint32_t +nicvf_dev_rbdr_refill(struct rte_eth_dev *dev, uint16_t queue_idx) +{ + struct nicvf_rxq *rxq; + uint32_t to_process; + uint32_t rx_free; + + rxq = dev->data->rx_queues[queue_idx]; + to_process = rxq->recv_buffers; + while (rxq->recv_buffers > 0) { + rx_free = RTE_MIN(rxq->recv_buffers, NICVF_MAX_RX_FREE_THRESH); + rxq->recv_buffers -= nicvf_fill_rbdr(rxq, rx_free); + } + + assert(rxq->recv_buffers == 0); + return to_process; +} |