--- /dev/null
+/*
+ * 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;
+}
Code Review / deb_dpdk.git / blobdiff