diff options
Diffstat (limited to 'drivers/net/dpaa/dpaa_rxtx.c')
| -rw-r--r-- | drivers/net/dpaa/dpaa_rxtx.c | 756 |
1 files changed, 756 insertions, 0 deletions
diff --git a/drivers/net/dpaa/dpaa_rxtx.c b/drivers/net/dpaa/dpaa_rxtx.c new file mode 100644 index 00000000..41e57f2e --- /dev/null +++ b/drivers/net/dpaa/dpaa_rxtx.c @@ -0,0 +1,756 @@ +/*- + * BSD LICENSE + * + * Copyright 2016 Freescale Semiconductor, Inc. All rights reserved. + * Copyright 2017 NXP. + * + * 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 Freescale Semiconductor, Inc 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. + */ + +/* System headers */ +#include <inttypes.h> +#include <unistd.h> +#include <stdio.h> +#include <limits.h> +#include <sched.h> +#include <pthread.h> + +#include <rte_byteorder.h> +#include <rte_common.h> +#include <rte_interrupts.h> +#include <rte_log.h> +#include <rte_debug.h> +#include <rte_pci.h> +#include <rte_atomic.h> +#include <rte_branch_prediction.h> +#include <rte_memory.h> +#include <rte_tailq.h> +#include <rte_eal.h> +#include <rte_alarm.h> +#include <rte_ether.h> +#include <rte_ethdev.h> +#include <rte_malloc.h> +#include <rte_ring.h> +#include <rte_ip.h> +#include <rte_tcp.h> +#include <rte_udp.h> + +#include "dpaa_ethdev.h" +#include "dpaa_rxtx.h" +#include <rte_dpaa_bus.h> +#include <dpaa_mempool.h> + +#include <fsl_usd.h> +#include <fsl_qman.h> +#include <fsl_bman.h> +#include <of.h> +#include <netcfg.h> + +#define DPAA_MBUF_TO_CONTIG_FD(_mbuf, _fd, _bpid) \ + do { \ + (_fd)->cmd = 0; \ + (_fd)->opaque_addr = 0; \ + (_fd)->opaque = QM_FD_CONTIG << DPAA_FD_FORMAT_SHIFT; \ + (_fd)->opaque |= ((_mbuf)->data_off) << DPAA_FD_OFFSET_SHIFT; \ + (_fd)->opaque |= (_mbuf)->pkt_len; \ + (_fd)->addr = (_mbuf)->buf_iova; \ + (_fd)->bpid = _bpid; \ + } while (0) + +#if (defined RTE_LIBRTE_DPAA_DEBUG_DRIVER) +void dpaa_display_frame(const struct qm_fd *fd) +{ + int ii; + char *ptr; + + printf("%s::bpid %x addr %08x%08x, format %d off %d, len %d stat %x\n", + __func__, fd->bpid, fd->addr_hi, fd->addr_lo, fd->format, + fd->offset, fd->length20, fd->status); + + ptr = (char *)rte_dpaa_mem_ptov(fd->addr); + ptr += fd->offset; + printf("%02x ", *ptr); + for (ii = 1; ii < fd->length20; ii++) { + printf("%02x ", *ptr); + if ((ii % 16) == 0) + printf("\n"); + ptr++; + } + printf("\n"); +} +#else +#define dpaa_display_frame(a) +#endif + +static inline void dpaa_slow_parsing(struct rte_mbuf *m __rte_unused, + uint64_t prs __rte_unused) +{ + DPAA_DP_LOG(DEBUG, "Slow parsing"); + /*TBD:XXX: to be implemented*/ +} + +static inline void dpaa_eth_packet_info(struct rte_mbuf *m, + uint64_t fd_virt_addr) +{ + struct annotations_t *annot = GET_ANNOTATIONS(fd_virt_addr); + uint64_t prs = *((uint64_t *)(&annot->parse)) & DPAA_PARSE_MASK; + + DPAA_DP_LOG(DEBUG, " Parsing mbuf: %p with annotations: %p", m, annot); + + switch (prs) { + case DPAA_PKT_TYPE_NONE: + m->packet_type = 0; + break; + case DPAA_PKT_TYPE_ETHER: + m->packet_type = RTE_PTYPE_L2_ETHER; + break; + case DPAA_PKT_TYPE_IPV4: + m->packet_type = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4; + break; + case DPAA_PKT_TYPE_IPV6: + m->packet_type = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV6; + break; + case DPAA_PKT_TYPE_IPV4_FRAG: + case DPAA_PKT_TYPE_IPV4_FRAG_UDP: + case DPAA_PKT_TYPE_IPV4_FRAG_TCP: + case DPAA_PKT_TYPE_IPV4_FRAG_SCTP: + m->packet_type = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_FRAG; + break; + case DPAA_PKT_TYPE_IPV6_FRAG: + case DPAA_PKT_TYPE_IPV6_FRAG_UDP: + case DPAA_PKT_TYPE_IPV6_FRAG_TCP: + case DPAA_PKT_TYPE_IPV6_FRAG_SCTP: + m->packet_type = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_FRAG; + break; + case DPAA_PKT_TYPE_IPV4_EXT: + m->packet_type = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT; + break; + case DPAA_PKT_TYPE_IPV6_EXT: + m->packet_type = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV6_EXT; + break; + case DPAA_PKT_TYPE_IPV4_TCP: + m->packet_type = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_TCP; + break; + case DPAA_PKT_TYPE_IPV6_TCP: + m->packet_type = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_TCP; + break; + case DPAA_PKT_TYPE_IPV4_UDP: + m->packet_type = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_UDP; + break; + case DPAA_PKT_TYPE_IPV6_UDP: + m->packet_type = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP; + break; + case DPAA_PKT_TYPE_IPV4_EXT_UDP: + m->packet_type = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_UDP; + break; + case DPAA_PKT_TYPE_IPV6_EXT_UDP: + m->packet_type = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_UDP; + break; + case DPAA_PKT_TYPE_IPV4_EXT_TCP: + m->packet_type = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_TCP; + break; + case DPAA_PKT_TYPE_IPV6_EXT_TCP: + m->packet_type = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_TCP; + break; + case DPAA_PKT_TYPE_IPV4_SCTP: + m->packet_type = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_SCTP; + break; + case DPAA_PKT_TYPE_IPV6_SCTP: + m->packet_type = RTE_PTYPE_L2_ETHER | + RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_SCTP; + break; + /* More switch cases can be added */ + default: + dpaa_slow_parsing(m, prs); + } + + m->tx_offload = annot->parse.ip_off[0]; + m->tx_offload |= (annot->parse.l4_off - annot->parse.ip_off[0]) + << DPAA_PKT_L3_LEN_SHIFT; + + /* Set the hash values */ + m->hash.rss = (uint32_t)(rte_be_to_cpu_64(annot->hash)); + m->ol_flags = PKT_RX_RSS_HASH; + /* All packets with Bad checksum are dropped by interface (and + * corresponding notification issued to RX error queues). + */ + m->ol_flags |= PKT_RX_IP_CKSUM_GOOD; + + /* Check if Vlan is present */ + if (prs & DPAA_PARSE_VLAN_MASK) + m->ol_flags |= PKT_RX_VLAN; + /* Packet received without stripping the vlan */ +} + +static inline void dpaa_checksum(struct rte_mbuf *mbuf) +{ + struct ether_hdr *eth_hdr = rte_pktmbuf_mtod(mbuf, struct ether_hdr *); + char *l3_hdr = (char *)eth_hdr + mbuf->l2_len; + struct ipv4_hdr *ipv4_hdr = (struct ipv4_hdr *)l3_hdr; + struct ipv6_hdr *ipv6_hdr = (struct ipv6_hdr *)l3_hdr; + + DPAA_DP_LOG(DEBUG, "Calculating checksum for mbuf: %p", mbuf); + + if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == RTE_PTYPE_L3_IPV4) || + ((mbuf->packet_type & RTE_PTYPE_L3_MASK) == + RTE_PTYPE_L3_IPV4_EXT)) { + ipv4_hdr = (struct ipv4_hdr *)l3_hdr; + ipv4_hdr->hdr_checksum = 0; + ipv4_hdr->hdr_checksum = rte_ipv4_cksum(ipv4_hdr); + } else if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == + RTE_PTYPE_L3_IPV6) || + ((mbuf->packet_type & RTE_PTYPE_L3_MASK) == + RTE_PTYPE_L3_IPV6_EXT)) + ipv6_hdr = (struct ipv6_hdr *)l3_hdr; + + if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_TCP) { + struct tcp_hdr *tcp_hdr = (struct tcp_hdr *)(l3_hdr + + mbuf->l3_len); + tcp_hdr->cksum = 0; + if (eth_hdr->ether_type == htons(ETHER_TYPE_IPv4)) + tcp_hdr->cksum = rte_ipv4_udptcp_cksum(ipv4_hdr, + tcp_hdr); + else /* assume ethertype == ETHER_TYPE_IPv6 */ + tcp_hdr->cksum = rte_ipv6_udptcp_cksum(ipv6_hdr, + tcp_hdr); + } else if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == + RTE_PTYPE_L4_UDP) { + struct udp_hdr *udp_hdr = (struct udp_hdr *)(l3_hdr + + mbuf->l3_len); + udp_hdr->dgram_cksum = 0; + if (eth_hdr->ether_type == htons(ETHER_TYPE_IPv4)) + udp_hdr->dgram_cksum = rte_ipv4_udptcp_cksum(ipv4_hdr, + udp_hdr); + else /* assume ethertype == ETHER_TYPE_IPv6 */ + udp_hdr->dgram_cksum = rte_ipv6_udptcp_cksum(ipv6_hdr, + udp_hdr); + } +} + +static inline void dpaa_checksum_offload(struct rte_mbuf *mbuf, + struct qm_fd *fd, char *prs_buf) +{ + struct dpaa_eth_parse_results_t *prs; + + DPAA_DP_LOG(DEBUG, " Offloading checksum for mbuf: %p", mbuf); + + prs = GET_TX_PRS(prs_buf); + prs->l3r = 0; + prs->l4r = 0; + if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == RTE_PTYPE_L3_IPV4) || + ((mbuf->packet_type & RTE_PTYPE_L3_MASK) == + RTE_PTYPE_L3_IPV4_EXT)) + prs->l3r = DPAA_L3_PARSE_RESULT_IPV4; + else if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == + RTE_PTYPE_L3_IPV6) || + ((mbuf->packet_type & RTE_PTYPE_L3_MASK) == + RTE_PTYPE_L3_IPV6_EXT)) + prs->l3r = DPAA_L3_PARSE_RESULT_IPV6; + + if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_TCP) + prs->l4r = DPAA_L4_PARSE_RESULT_TCP; + else if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_UDP) + prs->l4r = DPAA_L4_PARSE_RESULT_UDP; + + prs->ip_off[0] = mbuf->l2_len; + prs->l4_off = mbuf->l3_len + mbuf->l2_len; + /* Enable L3 (and L4, if TCP or UDP) HW checksum*/ + fd->cmd = DPAA_FD_CMD_RPD | DPAA_FD_CMD_DTC; +} + +struct rte_mbuf * +dpaa_eth_sg_to_mbuf(struct qm_fd *fd, uint32_t ifid) +{ + struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid); + struct rte_mbuf *first_seg, *prev_seg, *cur_seg, *temp; + struct qm_sg_entry *sgt, *sg_temp; + void *vaddr, *sg_vaddr; + int i = 0; + uint8_t fd_offset = fd->offset; + + DPAA_DP_LOG(DEBUG, "Received an SG frame"); + + vaddr = rte_dpaa_mem_ptov(qm_fd_addr(fd)); + if (!vaddr) { + DPAA_PMD_ERR("unable to convert physical address"); + return NULL; + } + sgt = vaddr + fd_offset; + sg_temp = &sgt[i++]; + hw_sg_to_cpu(sg_temp); + temp = (struct rte_mbuf *)((char *)vaddr - bp_info->meta_data_size); + sg_vaddr = rte_dpaa_mem_ptov(qm_sg_entry_get64(sg_temp)); + + first_seg = (struct rte_mbuf *)((char *)sg_vaddr - + bp_info->meta_data_size); + first_seg->data_off = sg_temp->offset; + first_seg->data_len = sg_temp->length; + first_seg->pkt_len = sg_temp->length; + rte_mbuf_refcnt_set(first_seg, 1); + + first_seg->port = ifid; + first_seg->nb_segs = 1; + first_seg->ol_flags = 0; + prev_seg = first_seg; + while (i < DPAA_SGT_MAX_ENTRIES) { + sg_temp = &sgt[i++]; + hw_sg_to_cpu(sg_temp); + sg_vaddr = rte_dpaa_mem_ptov(qm_sg_entry_get64(sg_temp)); + cur_seg = (struct rte_mbuf *)((char *)sg_vaddr - + bp_info->meta_data_size); + cur_seg->data_off = sg_temp->offset; + cur_seg->data_len = sg_temp->length; + first_seg->pkt_len += sg_temp->length; + first_seg->nb_segs += 1; + rte_mbuf_refcnt_set(cur_seg, 1); + prev_seg->next = cur_seg; + if (sg_temp->final) { + cur_seg->next = NULL; + break; + } + prev_seg = cur_seg; + } + + dpaa_eth_packet_info(first_seg, (uint64_t)vaddr); + rte_pktmbuf_free_seg(temp); + + return first_seg; +} + +static inline struct rte_mbuf *dpaa_eth_fd_to_mbuf(struct qm_fd *fd, + uint32_t ifid) +{ + struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid); + struct rte_mbuf *mbuf; + void *ptr; + uint8_t format = + (fd->opaque & DPAA_FD_FORMAT_MASK) >> DPAA_FD_FORMAT_SHIFT; + uint16_t offset = + (fd->opaque & DPAA_FD_OFFSET_MASK) >> DPAA_FD_OFFSET_SHIFT; + uint32_t length = fd->opaque & DPAA_FD_LENGTH_MASK; + + DPAA_DP_LOG(DEBUG, " FD--->MBUF"); + + if (unlikely(format == qm_fd_sg)) + return dpaa_eth_sg_to_mbuf(fd, ifid); + + /* Ignoring case when format != qm_fd_contig */ + dpaa_display_frame(fd); + ptr = rte_dpaa_mem_ptov(fd->addr); + /* Ignoring case when ptr would be NULL. That is only possible incase + * of a corrupted packet + */ + + mbuf = (struct rte_mbuf *)((char *)ptr - bp_info->meta_data_size); + /* Prefetch the Parse results and packet data to L1 */ + rte_prefetch0((void *)((uint8_t *)ptr + DEFAULT_RX_ICEOF)); + rte_prefetch0((void *)((uint8_t *)ptr + offset)); + + mbuf->data_off = offset; + mbuf->data_len = length; + mbuf->pkt_len = length; + + mbuf->port = ifid; + mbuf->nb_segs = 1; + mbuf->ol_flags = 0; + mbuf->next = NULL; + rte_mbuf_refcnt_set(mbuf, 1); + dpaa_eth_packet_info(mbuf, (uint64_t)mbuf->buf_addr); + + return mbuf; +} + +uint16_t dpaa_eth_queue_rx(void *q, + struct rte_mbuf **bufs, + uint16_t nb_bufs) +{ + struct qman_fq *fq = q; + struct qm_dqrr_entry *dq; + uint32_t num_rx = 0, ifid = ((struct dpaa_if *)fq->dpaa_intf)->ifid; + int ret; + + ret = rte_dpaa_portal_init((void *)0); + if (ret) { + DPAA_PMD_ERR("Failure in affining portal"); + return 0; + } + + ret = qman_set_vdq(fq, (nb_bufs > DPAA_MAX_DEQUEUE_NUM_FRAMES) ? + DPAA_MAX_DEQUEUE_NUM_FRAMES : nb_bufs); + if (ret) + return 0; + + do { + dq = qman_dequeue(fq); + if (!dq) + continue; + bufs[num_rx++] = dpaa_eth_fd_to_mbuf(&dq->fd, ifid); + qman_dqrr_consume(fq, dq); + } while (fq->flags & QMAN_FQ_STATE_VDQCR); + + return num_rx; +} + +static void *dpaa_get_pktbuf(struct dpaa_bp_info *bp_info) +{ + int ret; + uint64_t buf = 0; + struct bm_buffer bufs; + + ret = bman_acquire(bp_info->bp, &bufs, 1, 0); + if (ret <= 0) { + DPAA_PMD_WARN("Failed to allocate buffers %d", ret); + return (void *)buf; + } + + DPAA_DP_LOG(DEBUG, "got buffer 0x%lx from pool %d", + (uint64_t)bufs.addr, bufs.bpid); + + buf = (uint64_t)rte_dpaa_mem_ptov(bufs.addr) - bp_info->meta_data_size; + if (!buf) + goto out; + +out: + return (void *)buf; +} + +static struct rte_mbuf *dpaa_get_dmable_mbuf(struct rte_mbuf *mbuf, + struct dpaa_if *dpaa_intf) +{ + struct rte_mbuf *dpaa_mbuf; + + /* allocate pktbuffer on bpid for dpaa port */ + dpaa_mbuf = dpaa_get_pktbuf(dpaa_intf->bp_info); + if (!dpaa_mbuf) + return NULL; + + memcpy((uint8_t *)(dpaa_mbuf->buf_addr) + mbuf->data_off, (void *) + ((uint8_t *)(mbuf->buf_addr) + mbuf->data_off), mbuf->pkt_len); + + /* Copy only the required fields */ + dpaa_mbuf->data_off = mbuf->data_off; + dpaa_mbuf->pkt_len = mbuf->pkt_len; + dpaa_mbuf->ol_flags = mbuf->ol_flags; + dpaa_mbuf->packet_type = mbuf->packet_type; + dpaa_mbuf->tx_offload = mbuf->tx_offload; + rte_pktmbuf_free(mbuf); + return dpaa_mbuf; +} + +int +dpaa_eth_mbuf_to_sg_fd(struct rte_mbuf *mbuf, + struct qm_fd *fd, + uint32_t bpid) +{ + struct rte_mbuf *cur_seg = mbuf, *prev_seg = NULL; + struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(bpid); + struct rte_mbuf *temp, *mi; + struct qm_sg_entry *sg_temp, *sgt; + int i = 0; + + DPAA_DP_LOG(DEBUG, "Creating SG FD to transmit"); + + temp = rte_pktmbuf_alloc(bp_info->mp); + if (!temp) { + DPAA_PMD_ERR("Failure in allocation of mbuf"); + return -1; + } + if (temp->buf_len < ((mbuf->nb_segs * sizeof(struct qm_sg_entry)) + + temp->data_off)) { + DPAA_PMD_ERR("Insufficient space in mbuf for SG entries"); + return -1; + } + + fd->cmd = 0; + fd->opaque_addr = 0; + + if (mbuf->ol_flags & DPAA_TX_CKSUM_OFFLOAD_MASK) { + if (temp->data_off < DEFAULT_TX_ICEOF + + sizeof(struct dpaa_eth_parse_results_t)) + temp->data_off = DEFAULT_TX_ICEOF + + sizeof(struct dpaa_eth_parse_results_t); + dcbz_64(temp->buf_addr); + dpaa_checksum_offload(mbuf, fd, temp->buf_addr); + } + + sgt = temp->buf_addr + temp->data_off; + fd->format = QM_FD_SG; + fd->addr = temp->buf_iova; + fd->offset = temp->data_off; + fd->bpid = bpid; + fd->length20 = mbuf->pkt_len; + + while (i < DPAA_SGT_MAX_ENTRIES) { + sg_temp = &sgt[i++]; + sg_temp->opaque = 0; + sg_temp->val = 0; + sg_temp->addr = cur_seg->buf_iova; + sg_temp->offset = cur_seg->data_off; + sg_temp->length = cur_seg->data_len; + if (RTE_MBUF_DIRECT(cur_seg)) { + if (rte_mbuf_refcnt_read(cur_seg) > 1) { + /*If refcnt > 1, invalid bpid is set to ensure + * buffer is not freed by HW. + */ + sg_temp->bpid = 0xff; + rte_mbuf_refcnt_update(cur_seg, -1); + } else { + sg_temp->bpid = + DPAA_MEMPOOL_TO_BPID(cur_seg->pool); + } + cur_seg = cur_seg->next; + } else { + /* Get owner MBUF from indirect buffer */ + mi = rte_mbuf_from_indirect(cur_seg); + if (rte_mbuf_refcnt_read(mi) > 1) { + /*If refcnt > 1, invalid bpid is set to ensure + * owner buffer is not freed by HW. + */ + sg_temp->bpid = 0xff; + } else { + sg_temp->bpid = DPAA_MEMPOOL_TO_BPID(mi->pool); + rte_mbuf_refcnt_update(mi, 1); + } + prev_seg = cur_seg; + cur_seg = cur_seg->next; + prev_seg->next = NULL; + rte_pktmbuf_free(prev_seg); + } + if (cur_seg == NULL) { + sg_temp->final = 1; + cpu_to_hw_sg(sg_temp); + break; + } + cpu_to_hw_sg(sg_temp); + } + return 0; +} + +/* Handle mbufs which are not segmented (non SG) */ +static inline void +tx_on_dpaa_pool_unsegmented(struct rte_mbuf *mbuf, + struct dpaa_bp_info *bp_info, + struct qm_fd *fd_arr) +{ + struct rte_mbuf *mi = NULL; + + if (RTE_MBUF_DIRECT(mbuf)) { + if (rte_mbuf_refcnt_read(mbuf) > 1) { + /* In case of direct mbuf and mbuf being cloned, + * BMAN should _not_ release buffer. + */ + DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, 0xff); + /* Buffer should be releasd by EAL */ + rte_mbuf_refcnt_update(mbuf, -1); + } else { + /* In case of direct mbuf and no cloning, mbuf can be + * released by BMAN. + */ + DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, bp_info->bpid); + } + } else { + /* This is data-containing core mbuf: 'mi' */ + mi = rte_mbuf_from_indirect(mbuf); + if (rte_mbuf_refcnt_read(mi) > 1) { + /* In case of indirect mbuf, and mbuf being cloned, + * BMAN should _not_ release it and let EAL release + * it through pktmbuf_free below. + */ + DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, 0xff); + } else { + /* In case of indirect mbuf, and no cloning, core mbuf + * should be released by BMAN. + * Increate refcnt of core mbuf so that when + * pktmbuf_free is called and mbuf is released, EAL + * doesn't try to release core mbuf which would have + * been released by BMAN. + */ + rte_mbuf_refcnt_update(mi, 1); + DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, bp_info->bpid); + } + rte_pktmbuf_free(mbuf); + } + + if (mbuf->ol_flags & DPAA_TX_CKSUM_OFFLOAD_MASK) { + if (mbuf->data_off < (DEFAULT_TX_ICEOF + + sizeof(struct dpaa_eth_parse_results_t))) { + DPAA_DP_LOG(DEBUG, "Checksum offload Err: " + "Not enough Headroom " + "space for correct Checksum offload." + "So Calculating checksum in Software."); + dpaa_checksum(mbuf); + } else { + dpaa_checksum_offload(mbuf, fd_arr, mbuf->buf_addr); + } + } +} + +/* Handle all mbufs on dpaa BMAN managed pool */ +static inline uint16_t +tx_on_dpaa_pool(struct rte_mbuf *mbuf, + struct dpaa_bp_info *bp_info, + struct qm_fd *fd_arr) +{ + DPAA_DP_LOG(DEBUG, "BMAN offloaded buffer, mbuf: %p", mbuf); + + if (mbuf->nb_segs == 1) { + /* Case for non-segmented buffers */ + tx_on_dpaa_pool_unsegmented(mbuf, bp_info, fd_arr); + } else if (mbuf->nb_segs > 1 && + mbuf->nb_segs <= DPAA_SGT_MAX_ENTRIES) { + if (dpaa_eth_mbuf_to_sg_fd(mbuf, fd_arr, bp_info->bpid)) { + DPAA_PMD_DEBUG("Unable to create Scatter Gather FD"); + return 1; + } + } else { + DPAA_PMD_DEBUG("Number of Segments not supported"); + return 1; + } + + return 0; +} + +/* Handle all mbufs on an external pool (non-dpaa) */ +static inline uint16_t +tx_on_external_pool(struct qman_fq *txq, struct rte_mbuf *mbuf, + struct qm_fd *fd_arr) +{ + struct dpaa_if *dpaa_intf = txq->dpaa_intf; + struct rte_mbuf *dmable_mbuf; + + DPAA_DP_LOG(DEBUG, "Non-BMAN offloaded buffer." + "Allocating an offloaded buffer"); + dmable_mbuf = dpaa_get_dmable_mbuf(mbuf, dpaa_intf); + if (!dmable_mbuf) { + DPAA_DP_LOG(DEBUG, "no dpaa buffers."); + return 1; + } + + DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, dpaa_intf->bp_info->bpid); + + return 0; +} + +uint16_t +dpaa_eth_queue_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs) +{ + struct rte_mbuf *mbuf, *mi = NULL; + struct rte_mempool *mp; + struct dpaa_bp_info *bp_info; + struct qm_fd fd_arr[MAX_TX_RING_SLOTS]; + uint32_t frames_to_send, loop, i = 0; + uint16_t state; + int ret; + + ret = rte_dpaa_portal_init((void *)0); + if (ret) { + DPAA_PMD_ERR("Failure in affining portal"); + return 0; + } + + DPAA_DP_LOG(DEBUG, "Transmitting %d buffers on queue: %p", nb_bufs, q); + + while (nb_bufs) { + frames_to_send = (nb_bufs >> 3) ? MAX_TX_RING_SLOTS : nb_bufs; + for (loop = 0; loop < frames_to_send; loop++, i++) { + mbuf = bufs[i]; + if (RTE_MBUF_DIRECT(mbuf)) { + mp = mbuf->pool; + } else { + mi = rte_mbuf_from_indirect(mbuf); + mp = mi->pool; + } + + bp_info = DPAA_MEMPOOL_TO_POOL_INFO(mp); + if (likely(mp->ops_index == bp_info->dpaa_ops_index)) { + state = tx_on_dpaa_pool(mbuf, bp_info, + &fd_arr[loop]); + if (unlikely(state)) { + /* Set frames_to_send & nb_bufs so + * that packets are transmitted till + * previous frame. + */ + frames_to_send = loop; + nb_bufs = loop; + goto send_pkts; + } + } else { + state = tx_on_external_pool(q, mbuf, + &fd_arr[loop]); + if (unlikely(state)) { + /* Set frames_to_send & nb_bufs so + * that packets are transmitted till + * previous frame. + */ + frames_to_send = loop; + nb_bufs = loop; + goto send_pkts; + } + } + } + +send_pkts: + loop = 0; + while (loop < frames_to_send) { + loop += qman_enqueue_multi(q, &fd_arr[loop], + frames_to_send - loop); + } + nb_bufs -= frames_to_send; + } + + DPAA_DP_LOG(DEBUG, "Transmitted %d buffers on queue: %p", i, q); + + return i; +} + +uint16_t dpaa_eth_tx_drop_all(void *q __rte_unused, + struct rte_mbuf **bufs __rte_unused, + uint16_t nb_bufs __rte_unused) +{ + DPAA_DP_LOG(DEBUG, "Drop all packets"); + + /* Drop all incoming packets. No need to free packets here + * because the rte_eth f/w frees up the packets through tx_buffer + * callback in case this functions returns count less than nb_bufs + */ + return 0; +} |