net/mlx5: support hardware TSO
[dpdk.git] / drivers / net / mlx5 / mlx5_rxtx.c
index 88b0354..7ef6c8d 100644 (file)
@@ -344,6 +344,82 @@ mlx5_tx_dbrec(struct txq *txq, volatile struct mlx5_wqe *wqe)
        *dst = *src;
 }
 
+/**
+ * DPDK callback to check the status of a tx descriptor.
+ *
+ * @param tx_queue
+ *   The tx queue.
+ * @param[in] offset
+ *   The index of the descriptor in the ring.
+ *
+ * @return
+ *   The status of the tx descriptor.
+ */
+int
+mlx5_tx_descriptor_status(void *tx_queue, uint16_t offset)
+{
+       struct txq *txq = tx_queue;
+       const unsigned int elts_n = 1 << txq->elts_n;
+       const unsigned int elts_cnt = elts_n - 1;
+       unsigned int used;
+
+       txq_complete(txq);
+       used = (txq->elts_head - txq->elts_tail) & elts_cnt;
+       if (offset < used)
+               return RTE_ETH_TX_DESC_FULL;
+       return RTE_ETH_TX_DESC_DONE;
+}
+
+/**
+ * DPDK callback to check the status of a rx descriptor.
+ *
+ * @param rx_queue
+ *   The rx queue.
+ * @param[in] offset
+ *   The index of the descriptor in the ring.
+ *
+ * @return
+ *   The status of the tx descriptor.
+ */
+int
+mlx5_rx_descriptor_status(void *rx_queue, uint16_t offset)
+{
+       struct rxq *rxq = rx_queue;
+       struct rxq_zip *zip = &rxq->zip;
+       volatile struct mlx5_cqe *cqe;
+       const unsigned int cqe_n = (1 << rxq->cqe_n);
+       const unsigned int cqe_cnt = cqe_n - 1;
+       unsigned int cq_ci;
+       unsigned int used;
+
+       /* if we are processing a compressed cqe */
+       if (zip->ai) {
+               used = zip->cqe_cnt - zip->ca;
+               cq_ci = zip->cq_ci;
+       } else {
+               used = 0;
+               cq_ci = rxq->cq_ci;
+       }
+       cqe = &(*rxq->cqes)[cq_ci & cqe_cnt];
+       while (check_cqe(cqe, cqe_n, cq_ci) == 0) {
+               int8_t op_own;
+               unsigned int n;
+
+               op_own = cqe->op_own;
+               if (MLX5_CQE_FORMAT(op_own) == MLX5_COMPRESSED)
+                       n = ntohl(cqe->byte_cnt);
+               else
+                       n = 1;
+               cq_ci += n;
+               used += n;
+               cqe = &(*rxq->cqes)[cq_ci & cqe_cnt];
+       }
+       used = RTE_MIN(used, (1U << rxq->elts_n) - 1);
+       if (offset < used)
+               return RTE_ETH_RX_DESC_DONE;
+       return RTE_ETH_RX_DESC_AVAIL;
+}
+
 /**
  * DPDK callback for TX.
  *
@@ -365,6 +441,7 @@ mlx5_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
        const unsigned int elts_n = 1 << txq->elts_n;
        unsigned int i = 0;
        unsigned int j = 0;
+       unsigned int k = 0;
        unsigned int max;
        uint16_t max_wqe;
        unsigned int comp;
@@ -392,8 +469,10 @@ mlx5_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
                uintptr_t addr;
                uint64_t naddr;
                uint16_t pkt_inline_sz = MLX5_WQE_DWORD_SIZE + 2;
+               uint16_t tso_header_sz = 0;
                uint16_t ehdr;
                uint8_t cs_flags = 0;
+               uint64_t tso = 0;
 #ifdef MLX5_PMD_SOFT_COUNTERS
                uint32_t total_length = 0;
 #endif
@@ -465,14 +544,74 @@ mlx5_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
                        length -= pkt_inline_sz;
                        addr += pkt_inline_sz;
                }
+               if (txq->tso_en) {
+                       tso = buf->ol_flags & PKT_TX_TCP_SEG;
+                       if (tso) {
+                               uintptr_t end = (uintptr_t)
+                                               (((uintptr_t)txq->wqes) +
+                                               (1 << txq->wqe_n) *
+                                               MLX5_WQE_SIZE);
+                               unsigned int copy_b;
+                               uint8_t vlan_sz = (buf->ol_flags &
+                                                 PKT_TX_VLAN_PKT) ? 4 : 0;
+
+                               tso_header_sz = buf->l2_len + vlan_sz +
+                                               buf->l3_len + buf->l4_len;
+
+                               if (unlikely(tso_header_sz >
+                                            MLX5_MAX_TSO_HEADER))
+                                       break;
+                               copy_b = tso_header_sz - pkt_inline_sz;
+                               /* First seg must contain all headers. */
+                               assert(copy_b <= length);
+                               raw += MLX5_WQE_DWORD_SIZE;
+                               if (copy_b &&
+                                  ((end - (uintptr_t)raw) > copy_b)) {
+                                       uint16_t n = (MLX5_WQE_DS(copy_b) -
+                                                     1 + 3) / 4;
+
+                                       if (unlikely(max_wqe < n))
+                                               break;
+                                       max_wqe -= n;
+                                       rte_memcpy((void *)raw,
+                                                  (void *)addr, copy_b);
+                                       addr += copy_b;
+                                       length -= copy_b;
+                                       pkt_inline_sz += copy_b;
+                                       /*
+                                        * Another DWORD will be added
+                                        * in the inline part.
+                                        */
+                                       raw += MLX5_WQE_DS(copy_b) *
+                                              MLX5_WQE_DWORD_SIZE -
+                                              MLX5_WQE_DWORD_SIZE;
+                               } else {
+                                       /* NOP WQE. */
+                                       wqe->ctrl = (rte_v128u32_t){
+                                                    htonl(txq->wqe_ci << 8),
+                                                    htonl(txq->qp_num_8s | 1),
+                                                    0,
+                                                    0,
+                                       };
+                                       ds = 1;
+                                       total_length = 0;
+                                       pkts--;
+                                       pkts_n++;
+                                       elts_head = (elts_head - 1) &
+                                                   (elts_n - 1);
+                                       k++;
+                                       goto next_wqe;
+                               }
+                       }
+               }
                /* Inline if enough room. */
-               if (txq->max_inline) {
+               if (txq->inline_en || tso) {
                        uintptr_t end = (uintptr_t)
                                (((uintptr_t)txq->wqes) +
                                 (1 << txq->wqe_n) * MLX5_WQE_SIZE);
                        unsigned int max_inline = txq->max_inline *
                                                  RTE_CACHE_LINE_SIZE -
-                                                 MLX5_WQE_DWORD_SIZE;
+                                                 (pkt_inline_sz - 2);
                        uintptr_t addr_end = (addr + max_inline) &
                                             ~(RTE_CACHE_LINE_SIZE - 1);
                        unsigned int copy_b = (addr_end > addr) ?
@@ -491,6 +630,18 @@ mlx5_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts, uint16_t pkts_n)
                                if (unlikely(max_wqe < n))
                                        break;
                                max_wqe -= n;
+                               if (tso) {
+                                       uint32_t inl =
+                                               htonl(copy_b | MLX5_INLINE_SEG);
+
+                                       pkt_inline_sz =
+                                               MLX5_WQE_DS(tso_header_sz) *
+                                               MLX5_WQE_DWORD_SIZE;
+                                       rte_memcpy((void *)raw,
+                                                  (void *)&inl, sizeof(inl));
+                                       raw += sizeof(inl);
+                                       pkt_inline_sz += sizeof(inl);
+                               }
                                rte_memcpy((void *)raw, (void *)addr, copy_b);
                                addr += copy_b;
                                length -= copy_b;
@@ -591,18 +742,34 @@ next_seg:
 next_pkt:
                ++i;
                /* Initialize known and common part of the WQE structure. */
-               wqe->ctrl = (rte_v128u32_t){
-                       htonl((txq->wqe_ci << 8) | MLX5_OPCODE_SEND),
-                       htonl(txq->qp_num_8s | ds),
-                       0,
-                       0,
-               };
-               wqe->eseg = (rte_v128u32_t){
-                       0,
-                       cs_flags,
-                       0,
-                       (ehdr << 16) | htons(pkt_inline_sz),
-               };
+               if (tso) {
+                       wqe->ctrl = (rte_v128u32_t){
+                               htonl((txq->wqe_ci << 8) | MLX5_OPCODE_TSO),
+                               htonl(txq->qp_num_8s | ds),
+                               0,
+                               0,
+                       };
+                       wqe->eseg = (rte_v128u32_t){
+                               0,
+                               cs_flags | (htons(buf->tso_segsz) << 16),
+                               0,
+                               (ehdr << 16) | htons(tso_header_sz),
+                       };
+               } else {
+                       wqe->ctrl = (rte_v128u32_t){
+                               htonl((txq->wqe_ci << 8) | MLX5_OPCODE_SEND),
+                               htonl(txq->qp_num_8s | ds),
+                               0,
+                               0,
+                       };
+                       wqe->eseg = (rte_v128u32_t){
+                               0,
+                               cs_flags,
+                               0,
+                               (ehdr << 16) | htons(pkt_inline_sz),
+                       };
+               }
+next_wqe:
                txq->wqe_ci += (ds + 3) / 4;
 #ifdef MLX5_PMD_SOFT_COUNTERS
                /* Increment sent bytes counter. */
@@ -610,10 +777,10 @@ next_pkt:
 #endif
        } while (pkts_n);
        /* Take a shortcut if nothing must be sent. */
-       if (unlikely(i == 0))
+       if (unlikely((i + k) == 0))
                return 0;
        /* Check whether completion threshold has been reached. */
-       comp = txq->elts_comp + i + j;
+       comp = txq->elts_comp + i + j + k;
        if (comp >= MLX5_TX_COMP_THRESH) {
                volatile struct mlx5_wqe_ctrl *w =
                        (volatile struct mlx5_wqe_ctrl *)wqe;
@@ -1429,15 +1596,17 @@ mlx5_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
                                pkt->hash.rss = rss_hash_res;
                                pkt->ol_flags = PKT_RX_RSS_HASH;
                        }
-                       if (rxq->mark &&
-                           ((cqe->sop_drop_qpn !=
-                             htonl(MLX5_FLOW_MARK_INVALID)) ||
-                            (cqe->sop_drop_qpn !=
-                             htonl(MLX5_FLOW_MARK_DEFAULT)))) {
-                               pkt->hash.fdir.hi =
-                                       mlx5_flow_mark_get(cqe->sop_drop_qpn);
-                               pkt->ol_flags &= ~PKT_RX_RSS_HASH;
-                               pkt->ol_flags |= PKT_RX_FDIR | PKT_RX_FDIR_ID;
+                       if (rxq->mark && (cqe->sop_drop_qpn !=
+                                         htonl(MLX5_FLOW_MARK_INVALID))) {
+                               pkt->ol_flags |= PKT_RX_FDIR;
+                               if (cqe->sop_drop_qpn !=
+                                   htonl(MLX5_FLOW_MARK_DEFAULT)) {
+                                       uint32_t mark = cqe->sop_drop_qpn;
+
+                                       pkt->ol_flags |= PKT_RX_FDIR_ID;
+                                       pkt->hash.fdir.hi =
+                                               mlx5_flow_mark_get(mark);
+                               }
                        }
                        if (rxq->csum | rxq->csum_l2tun | rxq->vlan_strip |
                            rxq->crc_present) {
@@ -1447,7 +1616,7 @@ mlx5_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
                                        pkt->ol_flags |=
                                                rxq_cq_to_ol_flags(rxq, cqe);
                                }
-                               if (cqe->hdr_type_etc &
+                               if (ntohs(cqe->hdr_type_etc) &
                                    MLX5_CQE_VLAN_STRIPPED) {
                                        pkt->ol_flags |= PKT_RX_VLAN_PKT |
                                                PKT_RX_VLAN_STRIPPED;