'mlx5_mac.c',
'mlx5_mr.c',
'mlx5_rss.c',
+ 'mlx5_rx.c',
'mlx5_rxmode.c',
'mlx5_rxq.c',
'mlx5_rxtx.c',
--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2021 6WIND S.A.
+ * Copyright 2021 Mellanox Technologies, Ltd
+ */
+
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include <rte_mbuf.h>
+#include <rte_mempool.h>
+#include <rte_prefetch.h>
+#include <rte_common.h>
+#include <rte_branch_prediction.h>
+#include <rte_ether.h>
+#include <rte_cycles.h>
+#include <rte_flow.h>
+
+#include <mlx5_prm.h>
+#include <mlx5_common.h>
+
+#include "mlx5_autoconf.h"
+#include "mlx5_defs.h"
+#include "mlx5.h"
+#include "mlx5_mr.h"
+#include "mlx5_utils.h"
+#include "mlx5_rxtx.h"
+#include "mlx5_rx.h"
+
+
+static __rte_always_inline uint32_t
+rxq_cq_to_pkt_type(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cqe,
+ volatile struct mlx5_mini_cqe8 *mcqe);
+
+static __rte_always_inline int
+mlx5_rx_poll_len(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cqe,
+ uint16_t cqe_cnt, volatile struct mlx5_mini_cqe8 **mcqe);
+
+static __rte_always_inline uint32_t
+rxq_cq_to_ol_flags(volatile struct mlx5_cqe *cqe);
+
+static __rte_always_inline void
+rxq_cq_to_mbuf(struct mlx5_rxq_data *rxq, struct rte_mbuf *pkt,
+ volatile struct mlx5_cqe *cqe,
+ volatile struct mlx5_mini_cqe8 *mcqe);
+
+static inline void
+mlx5_lro_update_tcp_hdr(struct rte_tcp_hdr *__rte_restrict tcp,
+ volatile struct mlx5_cqe *__rte_restrict cqe,
+ uint32_t phcsum, uint8_t l4_type);
+
+static inline void
+mlx5_lro_update_hdr(uint8_t *__rte_restrict padd,
+ volatile struct mlx5_cqe *__rte_restrict cqe,
+ volatile struct mlx5_mini_cqe8 *mcqe,
+ struct mlx5_rxq_data *rxq, uint32_t len);
+
+
+/**
+ * Internal function to compute the number of used descriptors in an RX queue.
+ *
+ * @param rxq
+ * The Rx queue.
+ *
+ * @return
+ * The number of used Rx descriptor.
+ */
+static uint32_t
+rx_queue_count(struct mlx5_rxq_data *rxq)
+{
+ struct rxq_zip *zip = &rxq->zip;
+ volatile struct mlx5_cqe *cqe;
+ const unsigned int cqe_n = (1 << rxq->cqe_n);
+ const unsigned int sges_n = (1 << rxq->sges_n);
+ const unsigned int elts_n = (1 << rxq->elts_n);
+ const unsigned int strd_n = (1 << rxq->strd_num_n);
+ const unsigned int cqe_cnt = cqe_n - 1;
+ unsigned int cq_ci, used;
+
+ /* if we are processing a compressed cqe */
+ if (zip->ai) {
+ used = zip->cqe_cnt - zip->ai;
+ 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) != MLX5_CQE_STATUS_HW_OWN) {
+ int8_t op_own;
+ unsigned int n;
+
+ op_own = cqe->op_own;
+ if (MLX5_CQE_FORMAT(op_own) == MLX5_COMPRESSED)
+ n = rte_be_to_cpu_32(cqe->byte_cnt);
+ else
+ n = 1;
+ cq_ci += n;
+ used += n;
+ cqe = &(*rxq->cqes)[cq_ci & cqe_cnt];
+ }
+ used = RTE_MIN(used * sges_n, elts_n * strd_n);
+ return used;
+}
+
+/**
+ * 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 Rx descriptor.
+ */
+int
+mlx5_rx_descriptor_status(void *rx_queue, uint16_t offset)
+{
+ struct mlx5_rxq_data *rxq = rx_queue;
+ struct mlx5_rxq_ctrl *rxq_ctrl =
+ container_of(rxq, struct mlx5_rxq_ctrl, rxq);
+ struct rte_eth_dev *dev = ETH_DEV(rxq_ctrl->priv);
+
+ if (dev->rx_pkt_burst == NULL ||
+ dev->rx_pkt_burst == removed_rx_burst) {
+ rte_errno = ENOTSUP;
+ return -rte_errno;
+ }
+ if (offset >= (1 << rxq->cqe_n)) {
+ rte_errno = EINVAL;
+ return -rte_errno;
+ }
+ if (offset < rx_queue_count(rxq))
+ return RTE_ETH_RX_DESC_DONE;
+ return RTE_ETH_RX_DESC_AVAIL;
+}
+
+/**
+ * DPDK callback to get the RX queue information.
+ *
+ * @param dev
+ * Pointer to the device structure.
+ *
+ * @param rx_queue_id
+ * Rx queue identificator.
+ *
+ * @param qinfo
+ * Pointer to the RX queue information structure.
+ *
+ * @return
+ * None.
+ */
+
+void
+mlx5_rxq_info_get(struct rte_eth_dev *dev, uint16_t rx_queue_id,
+ struct rte_eth_rxq_info *qinfo)
+{
+ struct mlx5_priv *priv = dev->data->dev_private;
+ struct mlx5_rxq_data *rxq = (*priv->rxqs)[rx_queue_id];
+ struct mlx5_rxq_ctrl *rxq_ctrl =
+ container_of(rxq, struct mlx5_rxq_ctrl, rxq);
+
+ if (!rxq)
+ return;
+ qinfo->mp = mlx5_rxq_mprq_enabled(rxq) ?
+ rxq->mprq_mp : rxq->mp;
+ qinfo->conf.rx_thresh.pthresh = 0;
+ qinfo->conf.rx_thresh.hthresh = 0;
+ qinfo->conf.rx_thresh.wthresh = 0;
+ qinfo->conf.rx_free_thresh = rxq->rq_repl_thresh;
+ qinfo->conf.rx_drop_en = 1;
+ qinfo->conf.rx_deferred_start = rxq_ctrl ? 0 : 1;
+ qinfo->conf.offloads = dev->data->dev_conf.rxmode.offloads;
+ qinfo->scattered_rx = dev->data->scattered_rx;
+ qinfo->nb_desc = mlx5_rxq_mprq_enabled(rxq) ?
+ (1 << rxq->elts_n) * (1 << rxq->strd_num_n) :
+ (1 << rxq->elts_n);
+}
+
+/**
+ * DPDK callback to get the RX packet burst mode information.
+ *
+ * @param dev
+ * Pointer to the device structure.
+ *
+ * @param rx_queue_id
+ * Rx queue identificatior.
+ *
+ * @param mode
+ * Pointer to the burts mode information.
+ *
+ * @return
+ * 0 as success, -EINVAL as failure.
+ */
+int
+mlx5_rx_burst_mode_get(struct rte_eth_dev *dev,
+ uint16_t rx_queue_id __rte_unused,
+ struct rte_eth_burst_mode *mode)
+{
+ eth_rx_burst_t pkt_burst = dev->rx_pkt_burst;
+ struct mlx5_priv *priv = dev->data->dev_private;
+ struct mlx5_rxq_data *rxq;
+
+ rxq = (*priv->rxqs)[rx_queue_id];
+ if (!rxq) {
+ rte_errno = EINVAL;
+ return -rte_errno;
+ }
+ if (pkt_burst == mlx5_rx_burst) {
+ snprintf(mode->info, sizeof(mode->info), "%s", "Scalar");
+ } else if (pkt_burst == mlx5_rx_burst_mprq) {
+ snprintf(mode->info, sizeof(mode->info), "%s", "Multi-Packet RQ");
+ } else if (pkt_burst == mlx5_rx_burst_vec) {
+#if defined RTE_ARCH_X86_64
+ snprintf(mode->info, sizeof(mode->info), "%s", "Vector SSE");
+#elif defined RTE_ARCH_ARM64
+ snprintf(mode->info, sizeof(mode->info), "%s", "Vector Neon");
+#elif defined RTE_ARCH_PPC_64
+ snprintf(mode->info, sizeof(mode->info), "%s", "Vector AltiVec");
+#else
+ return -EINVAL;
+#endif
+ } else if (pkt_burst == mlx5_rx_burst_mprq_vec) {
+#if defined RTE_ARCH_X86_64
+ snprintf(mode->info, sizeof(mode->info), "%s", "MPRQ Vector SSE");
+#elif defined RTE_ARCH_ARM64
+ snprintf(mode->info, sizeof(mode->info), "%s", "MPRQ Vector Neon");
+#elif defined RTE_ARCH_PPC_64
+ snprintf(mode->info, sizeof(mode->info), "%s", "MPRQ Vector AltiVec");
+#else
+ return -EINVAL;
+#endif
+ } else {
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/**
+ * DPDK callback to get the number of used descriptors in a RX queue.
+ *
+ * @param dev
+ * Pointer to the device structure.
+ *
+ * @param rx_queue_id
+ * The Rx queue.
+ *
+ * @return
+ * The number of used rx descriptor.
+ * -EINVAL if the queue is invalid
+ */
+uint32_t
+mlx5_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
+{
+ struct mlx5_priv *priv = dev->data->dev_private;
+ struct mlx5_rxq_data *rxq;
+
+ if (dev->rx_pkt_burst == NULL ||
+ dev->rx_pkt_burst == removed_rx_burst) {
+ rte_errno = ENOTSUP;
+ return -rte_errno;
+ }
+ rxq = (*priv->rxqs)[rx_queue_id];
+ if (!rxq) {
+ rte_errno = EINVAL;
+ return -rte_errno;
+ }
+ return rx_queue_count(rxq);
+}
+
+/**
+ * Translate RX completion flags to packet type.
+ *
+ * @param[in] rxq
+ * Pointer to RX queue structure.
+ * @param[in] cqe
+ * Pointer to CQE.
+ *
+ * @note: fix mlx5_dev_supported_ptypes_get() if any change here.
+ *
+ * @return
+ * Packet type for struct rte_mbuf.
+ */
+static inline uint32_t
+rxq_cq_to_pkt_type(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cqe,
+ volatile struct mlx5_mini_cqe8 *mcqe)
+{
+ uint8_t idx;
+ uint8_t ptype;
+ uint8_t pinfo = (cqe->pkt_info & 0x3) << 6;
+
+ /* Get l3/l4 header from mini-CQE in case L3/L4 format*/
+ if (mcqe == NULL ||
+ rxq->mcqe_format != MLX5_CQE_RESP_FORMAT_L34H_STRIDX)
+ ptype = (cqe->hdr_type_etc & 0xfc00) >> 10;
+ else
+ ptype = mcqe->hdr_type >> 2;
+ /*
+ * The index to the array should have:
+ * bit[1:0] = l3_hdr_type
+ * bit[4:2] = l4_hdr_type
+ * bit[5] = ip_frag
+ * bit[6] = tunneled
+ * bit[7] = outer_l3_type
+ */
+ idx = pinfo | ptype;
+ return mlx5_ptype_table[idx] | rxq->tunnel * !!(idx & (1 << 6));
+}
+
+/**
+ * Initialize Rx WQ and indexes.
+ *
+ * @param[in] rxq
+ * Pointer to RX queue structure.
+ */
+void
+mlx5_rxq_initialize(struct mlx5_rxq_data *rxq)
+{
+ const unsigned int wqe_n = 1 << rxq->elts_n;
+ unsigned int i;
+
+ for (i = 0; (i != wqe_n); ++i) {
+ volatile struct mlx5_wqe_data_seg *scat;
+ uintptr_t addr;
+ uint32_t byte_count;
+
+ if (mlx5_rxq_mprq_enabled(rxq)) {
+ struct mlx5_mprq_buf *buf = (*rxq->mprq_bufs)[i];
+
+ scat = &((volatile struct mlx5_wqe_mprq *)
+ rxq->wqes)[i].dseg;
+ addr = (uintptr_t)mlx5_mprq_buf_addr(buf,
+ 1 << rxq->strd_num_n);
+ byte_count = (1 << rxq->strd_sz_n) *
+ (1 << rxq->strd_num_n);
+ } else {
+ struct rte_mbuf *buf = (*rxq->elts)[i];
+
+ scat = &((volatile struct mlx5_wqe_data_seg *)
+ rxq->wqes)[i];
+ addr = rte_pktmbuf_mtod(buf, uintptr_t);
+ byte_count = DATA_LEN(buf);
+ }
+ /* scat->addr must be able to store a pointer. */
+ MLX5_ASSERT(sizeof(scat->addr) >= sizeof(uintptr_t));
+ *scat = (struct mlx5_wqe_data_seg){
+ .addr = rte_cpu_to_be_64(addr),
+ .byte_count = rte_cpu_to_be_32(byte_count),
+ .lkey = mlx5_rx_addr2mr(rxq, addr),
+ };
+ }
+ rxq->consumed_strd = 0;
+ rxq->decompressed = 0;
+ rxq->rq_pi = 0;
+ rxq->zip = (struct rxq_zip){
+ .ai = 0,
+ };
+ rxq->elts_ci = mlx5_rxq_mprq_enabled(rxq) ?
+ (wqe_n >> rxq->sges_n) * (1 << rxq->strd_num_n) : 0;
+ /* Update doorbell counter. */
+ rxq->rq_ci = wqe_n >> rxq->sges_n;
+ rte_io_wmb();
+ *rxq->rq_db = rte_cpu_to_be_32(rxq->rq_ci);
+}
+
+/**
+ * Handle a Rx error.
+ * The function inserts the RQ state to reset when the first error CQE is
+ * shown, then drains the CQ by the caller function loop. When the CQ is empty,
+ * it moves the RQ state to ready and initializes the RQ.
+ * Next CQE identification and error counting are in the caller responsibility.
+ *
+ * @param[in] rxq
+ * Pointer to RX queue structure.
+ * @param[in] vec
+ * 1 when called from vectorized Rx burst, need to prepare mbufs for the RQ.
+ * 0 when called from non-vectorized Rx burst.
+ *
+ * @return
+ * -1 in case of recovery error, otherwise the CQE status.
+ */
+int
+mlx5_rx_err_handle(struct mlx5_rxq_data *rxq, uint8_t vec)
+{
+ const uint16_t cqe_n = 1 << rxq->cqe_n;
+ const uint16_t cqe_mask = cqe_n - 1;
+ const uint16_t wqe_n = 1 << rxq->elts_n;
+ const uint16_t strd_n = 1 << rxq->strd_num_n;
+ struct mlx5_rxq_ctrl *rxq_ctrl =
+ container_of(rxq, struct mlx5_rxq_ctrl, rxq);
+ union {
+ volatile struct mlx5_cqe *cqe;
+ volatile struct mlx5_err_cqe *err_cqe;
+ } u = {
+ .cqe = &(*rxq->cqes)[rxq->cq_ci & cqe_mask],
+ };
+ struct mlx5_mp_arg_queue_state_modify sm;
+ int ret;
+
+ switch (rxq->err_state) {
+ case MLX5_RXQ_ERR_STATE_NO_ERROR:
+ rxq->err_state = MLX5_RXQ_ERR_STATE_NEED_RESET;
+ /* Fall-through */
+ case MLX5_RXQ_ERR_STATE_NEED_RESET:
+ sm.is_wq = 1;
+ sm.queue_id = rxq->idx;
+ sm.state = IBV_WQS_RESET;
+ if (mlx5_queue_state_modify(ETH_DEV(rxq_ctrl->priv), &sm))
+ return -1;
+ if (rxq_ctrl->dump_file_n <
+ rxq_ctrl->priv->config.max_dump_files_num) {
+ MKSTR(err_str, "Unexpected CQE error syndrome "
+ "0x%02x CQN = %u RQN = %u wqe_counter = %u"
+ " rq_ci = %u cq_ci = %u", u.err_cqe->syndrome,
+ rxq->cqn, rxq_ctrl->wqn,
+ rte_be_to_cpu_16(u.err_cqe->wqe_counter),
+ rxq->rq_ci << rxq->sges_n, rxq->cq_ci);
+ MKSTR(name, "dpdk_mlx5_port_%u_rxq_%u_%u",
+ rxq->port_id, rxq->idx, (uint32_t)rte_rdtsc());
+ mlx5_dump_debug_information(name, NULL, err_str, 0);
+ mlx5_dump_debug_information(name, "MLX5 Error CQ:",
+ (const void *)((uintptr_t)
+ rxq->cqes),
+ sizeof(*u.cqe) * cqe_n);
+ mlx5_dump_debug_information(name, "MLX5 Error RQ:",
+ (const void *)((uintptr_t)
+ rxq->wqes),
+ 16 * wqe_n);
+ rxq_ctrl->dump_file_n++;
+ }
+ rxq->err_state = MLX5_RXQ_ERR_STATE_NEED_READY;
+ /* Fall-through */
+ case MLX5_RXQ_ERR_STATE_NEED_READY:
+ ret = check_cqe(u.cqe, cqe_n, rxq->cq_ci);
+ if (ret == MLX5_CQE_STATUS_HW_OWN) {
+ rte_io_wmb();
+ *rxq->cq_db = rte_cpu_to_be_32(rxq->cq_ci);
+ rte_io_wmb();
+ /*
+ * The RQ consumer index must be zeroed while moving
+ * from RESET state to RDY state.
+ */
+ *rxq->rq_db = rte_cpu_to_be_32(0);
+ rte_io_wmb();
+ sm.is_wq = 1;
+ sm.queue_id = rxq->idx;
+ sm.state = IBV_WQS_RDY;
+ if (mlx5_queue_state_modify(ETH_DEV(rxq_ctrl->priv),
+ &sm))
+ return -1;
+ if (vec) {
+ const uint32_t elts_n =
+ mlx5_rxq_mprq_enabled(rxq) ?
+ wqe_n * strd_n : wqe_n;
+ const uint32_t e_mask = elts_n - 1;
+ uint32_t elts_ci =
+ mlx5_rxq_mprq_enabled(rxq) ?
+ rxq->elts_ci : rxq->rq_ci;
+ uint32_t elt_idx;
+ struct rte_mbuf **elt;
+ int i;
+ unsigned int n = elts_n - (elts_ci -
+ rxq->rq_pi);
+
+ for (i = 0; i < (int)n; ++i) {
+ elt_idx = (elts_ci + i) & e_mask;
+ elt = &(*rxq->elts)[elt_idx];
+ *elt = rte_mbuf_raw_alloc(rxq->mp);
+ if (!*elt) {
+ for (i--; i >= 0; --i) {
+ elt_idx = (elts_ci +
+ i) & elts_n;
+ elt = &(*rxq->elts)
+ [elt_idx];
+ rte_pktmbuf_free_seg
+ (*elt);
+ }
+ return -1;
+ }
+ }
+ for (i = 0; i < (int)elts_n; ++i) {
+ elt = &(*rxq->elts)[i];
+ DATA_LEN(*elt) =
+ (uint16_t)((*elt)->buf_len -
+ rte_pktmbuf_headroom(*elt));
+ }
+ /* Padding with a fake mbuf for vec Rx. */
+ for (i = 0; i < MLX5_VPMD_DESCS_PER_LOOP; ++i)
+ (*rxq->elts)[elts_n + i] =
+ &rxq->fake_mbuf;
+ }
+ mlx5_rxq_initialize(rxq);
+ rxq->err_state = MLX5_RXQ_ERR_STATE_NO_ERROR;
+ }
+ return ret;
+ default:
+ return -1;
+ }
+}
+
+/**
+ * Get size of the next packet for a given CQE. For compressed CQEs, the
+ * consumer index is updated only once all packets of the current one have
+ * been processed.
+ *
+ * @param rxq
+ * Pointer to RX queue.
+ * @param cqe
+ * CQE to process.
+ * @param[out] mcqe
+ * Store pointer to mini-CQE if compressed. Otherwise, the pointer is not
+ * written.
+ *
+ * @return
+ * 0 in case of empty CQE, otherwise the packet size in bytes.
+ */
+static inline int
+mlx5_rx_poll_len(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cqe,
+ uint16_t cqe_cnt, volatile struct mlx5_mini_cqe8 **mcqe)
+{
+ struct rxq_zip *zip = &rxq->zip;
+ uint16_t cqe_n = cqe_cnt + 1;
+ int len;
+ uint16_t idx, end;
+
+ do {
+ len = 0;
+ /* Process compressed data in the CQE and mini arrays. */
+ if (zip->ai) {
+ volatile struct mlx5_mini_cqe8 (*mc)[8] =
+ (volatile struct mlx5_mini_cqe8 (*)[8])
+ (uintptr_t)(&(*rxq->cqes)[zip->ca &
+ cqe_cnt].pkt_info);
+ len = rte_be_to_cpu_32((*mc)[zip->ai & 7].byte_cnt &
+ rxq->byte_mask);
+ *mcqe = &(*mc)[zip->ai & 7];
+ if ((++zip->ai & 7) == 0) {
+ /* Invalidate consumed CQEs */
+ idx = zip->ca;
+ end = zip->na;
+ while (idx != end) {
+ (*rxq->cqes)[idx & cqe_cnt].op_own =
+ MLX5_CQE_INVALIDATE;
+ ++idx;
+ }
+ /*
+ * Increment consumer index to skip the number
+ * of CQEs consumed. Hardware leaves holes in
+ * the CQ ring for software use.
+ */
+ zip->ca = zip->na;
+ zip->na += 8;
+ }
+ if (unlikely(rxq->zip.ai == rxq->zip.cqe_cnt)) {
+ /* Invalidate the rest */
+ idx = zip->ca;
+ end = zip->cq_ci;
+
+ while (idx != end) {
+ (*rxq->cqes)[idx & cqe_cnt].op_own =
+ MLX5_CQE_INVALIDATE;
+ ++idx;
+ }
+ rxq->cq_ci = zip->cq_ci;
+ zip->ai = 0;
+ }
+ /*
+ * No compressed data, get next CQE and verify if it is
+ * compressed.
+ */
+ } else {
+ int ret;
+ int8_t op_own;
+ uint32_t cq_ci;
+
+ ret = check_cqe(cqe, cqe_n, rxq->cq_ci);
+ if (unlikely(ret != MLX5_CQE_STATUS_SW_OWN)) {
+ if (unlikely(ret == MLX5_CQE_STATUS_ERR ||
+ rxq->err_state)) {
+ ret = mlx5_rx_err_handle(rxq, 0);
+ if (ret == MLX5_CQE_STATUS_HW_OWN ||
+ ret == -1)
+ return 0;
+ } else {
+ return 0;
+ }
+ }
+ /*
+ * Introduce the local variable to have queue cq_ci
+ * index in queue structure always consistent with
+ * actual CQE boundary (not pointing to the middle
+ * of compressed CQE session).
+ */
+ cq_ci = rxq->cq_ci + 1;
+ op_own = cqe->op_own;
+ if (MLX5_CQE_FORMAT(op_own) == MLX5_COMPRESSED) {
+ volatile struct mlx5_mini_cqe8 (*mc)[8] =
+ (volatile struct mlx5_mini_cqe8 (*)[8])
+ (uintptr_t)(&(*rxq->cqes)
+ [cq_ci & cqe_cnt].pkt_info);
+
+ /* Fix endianness. */
+ zip->cqe_cnt = rte_be_to_cpu_32(cqe->byte_cnt);
+ /*
+ * Current mini array position is the one
+ * returned by check_cqe64().
+ *
+ * If completion comprises several mini arrays,
+ * as a special case the second one is located
+ * 7 CQEs after the initial CQE instead of 8
+ * for subsequent ones.
+ */
+ zip->ca = cq_ci;
+ zip->na = zip->ca + 7;
+ /* Compute the next non compressed CQE. */
+ zip->cq_ci = rxq->cq_ci + zip->cqe_cnt;
+ /* Get packet size to return. */
+ len = rte_be_to_cpu_32((*mc)[0].byte_cnt &
+ rxq->byte_mask);
+ *mcqe = &(*mc)[0];
+ zip->ai = 1;
+ /* Prefetch all to be invalidated */
+ idx = zip->ca;
+ end = zip->cq_ci;
+ while (idx != end) {
+ rte_prefetch0(&(*rxq->cqes)[(idx) &
+ cqe_cnt]);
+ ++idx;
+ }
+ } else {
+ rxq->cq_ci = cq_ci;
+ len = rte_be_to_cpu_32(cqe->byte_cnt);
+ }
+ }
+ if (unlikely(rxq->err_state)) {
+ cqe = &(*rxq->cqes)[rxq->cq_ci & cqe_cnt];
+ ++rxq->stats.idropped;
+ } else {
+ return len;
+ }
+ } while (1);
+}
+
+/**
+ * Translate RX completion flags to offload flags.
+ *
+ * @param[in] cqe
+ * Pointer to CQE.
+ *
+ * @return
+ * Offload flags (ol_flags) for struct rte_mbuf.
+ */
+static inline uint32_t
+rxq_cq_to_ol_flags(volatile struct mlx5_cqe *cqe)
+{
+ uint32_t ol_flags = 0;
+ uint16_t flags = rte_be_to_cpu_16(cqe->hdr_type_etc);
+
+ ol_flags =
+ TRANSPOSE(flags,
+ MLX5_CQE_RX_L3_HDR_VALID,
+ PKT_RX_IP_CKSUM_GOOD) |
+ TRANSPOSE(flags,
+ MLX5_CQE_RX_L4_HDR_VALID,
+ PKT_RX_L4_CKSUM_GOOD);
+ return ol_flags;
+}
+
+/**
+ * Fill in mbuf fields from RX completion flags.
+ * Note that pkt->ol_flags should be initialized outside of this function.
+ *
+ * @param rxq
+ * Pointer to RX queue.
+ * @param pkt
+ * mbuf to fill.
+ * @param cqe
+ * CQE to process.
+ * @param rss_hash_res
+ * Packet RSS Hash result.
+ */
+static inline void
+rxq_cq_to_mbuf(struct mlx5_rxq_data *rxq, struct rte_mbuf *pkt,
+ volatile struct mlx5_cqe *cqe,
+ volatile struct mlx5_mini_cqe8 *mcqe)
+{
+ /* Update packet information. */
+ pkt->packet_type = rxq_cq_to_pkt_type(rxq, cqe, mcqe);
+
+ if (rxq->rss_hash) {
+ uint32_t rss_hash_res = 0;
+
+ /* If compressed, take hash result from mini-CQE. */
+ if (mcqe == NULL ||
+ rxq->mcqe_format != MLX5_CQE_RESP_FORMAT_HASH)
+ rss_hash_res = rte_be_to_cpu_32(cqe->rx_hash_res);
+ else
+ rss_hash_res = rte_be_to_cpu_32(mcqe->rx_hash_result);
+ if (rss_hash_res) {
+ pkt->hash.rss = rss_hash_res;
+ pkt->ol_flags |= PKT_RX_RSS_HASH;
+ }
+ }
+ if (rxq->mark) {
+ uint32_t mark = 0;
+
+ /* If compressed, take flow tag from mini-CQE. */
+ if (mcqe == NULL ||
+ rxq->mcqe_format != MLX5_CQE_RESP_FORMAT_FTAG_STRIDX)
+ mark = cqe->sop_drop_qpn;
+ else
+ mark = ((mcqe->byte_cnt_flow & 0xff) << 8) |
+ (mcqe->flow_tag_high << 16);
+ if (MLX5_FLOW_MARK_IS_VALID(mark)) {
+ pkt->ol_flags |= PKT_RX_FDIR;
+ if (mark != RTE_BE32(MLX5_FLOW_MARK_DEFAULT)) {
+ pkt->ol_flags |= PKT_RX_FDIR_ID;
+ pkt->hash.fdir.hi = mlx5_flow_mark_get(mark);
+ }
+ }
+ }
+ if (rxq->dynf_meta) {
+ uint32_t meta = cqe->flow_table_metadata &
+ rxq->flow_meta_port_mask;
+
+ if (meta) {
+ pkt->ol_flags |= rxq->flow_meta_mask;
+ *RTE_MBUF_DYNFIELD(pkt, rxq->flow_meta_offset,
+ uint32_t *) = meta;
+ }
+ }
+ if (rxq->csum)
+ pkt->ol_flags |= rxq_cq_to_ol_flags(cqe);
+ if (rxq->vlan_strip) {
+ bool vlan_strip;
+
+ if (mcqe == NULL ||
+ rxq->mcqe_format != MLX5_CQE_RESP_FORMAT_L34H_STRIDX)
+ vlan_strip = cqe->hdr_type_etc &
+ RTE_BE16(MLX5_CQE_VLAN_STRIPPED);
+ else
+ vlan_strip = mcqe->hdr_type &
+ RTE_BE16(MLX5_CQE_VLAN_STRIPPED);
+ if (vlan_strip) {
+ pkt->ol_flags |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
+ pkt->vlan_tci = rte_be_to_cpu_16(cqe->vlan_info);
+ }
+ }
+ if (rxq->hw_timestamp) {
+ uint64_t ts = rte_be_to_cpu_64(cqe->timestamp);
+
+ if (rxq->rt_timestamp)
+ ts = mlx5_txpp_convert_rx_ts(rxq->sh, ts);
+ mlx5_timestamp_set(pkt, rxq->timestamp_offset, ts);
+ pkt->ol_flags |= rxq->timestamp_rx_flag;
+ }
+}
+
+/**
+ * DPDK callback for RX.
+ *
+ * @param dpdk_rxq
+ * Generic pointer to RX queue structure.
+ * @param[out] pkts
+ * Array to store received packets.
+ * @param pkts_n
+ * Maximum number of packets in array.
+ *
+ * @return
+ * Number of packets successfully received (<= pkts_n).
+ */
+uint16_t
+mlx5_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
+{
+ struct mlx5_rxq_data *rxq = dpdk_rxq;
+ const unsigned int wqe_cnt = (1 << rxq->elts_n) - 1;
+ const unsigned int cqe_cnt = (1 << rxq->cqe_n) - 1;
+ const unsigned int sges_n = rxq->sges_n;
+ struct rte_mbuf *pkt = NULL;
+ struct rte_mbuf *seg = NULL;
+ volatile struct mlx5_cqe *cqe =
+ &(*rxq->cqes)[rxq->cq_ci & cqe_cnt];
+ unsigned int i = 0;
+ unsigned int rq_ci = rxq->rq_ci << sges_n;
+ int len = 0; /* keep its value across iterations. */
+
+ while (pkts_n) {
+ unsigned int idx = rq_ci & wqe_cnt;
+ volatile struct mlx5_wqe_data_seg *wqe =
+ &((volatile struct mlx5_wqe_data_seg *)rxq->wqes)[idx];
+ struct rte_mbuf *rep = (*rxq->elts)[idx];
+ volatile struct mlx5_mini_cqe8 *mcqe = NULL;
+
+ if (pkt)
+ NEXT(seg) = rep;
+ seg = rep;
+ rte_prefetch0(seg);
+ rte_prefetch0(cqe);
+ rte_prefetch0(wqe);
+ /* Allocate the buf from the same pool. */
+ rep = rte_mbuf_raw_alloc(seg->pool);
+ if (unlikely(rep == NULL)) {
+ ++rxq->stats.rx_nombuf;
+ if (!pkt) {
+ /*
+ * no buffers before we even started,
+ * bail out silently.
+ */
+ break;
+ }
+ while (pkt != seg) {
+ MLX5_ASSERT(pkt != (*rxq->elts)[idx]);
+ rep = NEXT(pkt);
+ NEXT(pkt) = NULL;
+ NB_SEGS(pkt) = 1;
+ rte_mbuf_raw_free(pkt);
+ pkt = rep;
+ }
+ rq_ci >>= sges_n;
+ ++rq_ci;
+ rq_ci <<= sges_n;
+ break;
+ }
+ if (!pkt) {
+ cqe = &(*rxq->cqes)[rxq->cq_ci & cqe_cnt];
+ len = mlx5_rx_poll_len(rxq, cqe, cqe_cnt, &mcqe);
+ if (!len) {
+ rte_mbuf_raw_free(rep);
+ break;
+ }
+ pkt = seg;
+ MLX5_ASSERT(len >= (rxq->crc_present << 2));
+ pkt->ol_flags &= EXT_ATTACHED_MBUF;
+ rxq_cq_to_mbuf(rxq, pkt, cqe, mcqe);
+ if (rxq->crc_present)
+ len -= RTE_ETHER_CRC_LEN;
+ PKT_LEN(pkt) = len;
+ if (cqe->lro_num_seg > 1) {
+ mlx5_lro_update_hdr
+ (rte_pktmbuf_mtod(pkt, uint8_t *), cqe,
+ mcqe, rxq, len);
+ pkt->ol_flags |= PKT_RX_LRO;
+ pkt->tso_segsz = len / cqe->lro_num_seg;
+ }
+ }
+ DATA_LEN(rep) = DATA_LEN(seg);
+ PKT_LEN(rep) = PKT_LEN(seg);
+ SET_DATA_OFF(rep, DATA_OFF(seg));
+ PORT(rep) = PORT(seg);
+ (*rxq->elts)[idx] = rep;
+ /*
+ * Fill NIC descriptor with the new buffer. The lkey and size
+ * of the buffers are already known, only the buffer address
+ * changes.
+ */
+ wqe->addr = rte_cpu_to_be_64(rte_pktmbuf_mtod(rep, uintptr_t));
+ /* If there's only one MR, no need to replace LKey in WQE. */
+ if (unlikely(mlx5_mr_btree_len(&rxq->mr_ctrl.cache_bh) > 1))
+ wqe->lkey = mlx5_rx_mb2mr(rxq, rep);
+ if (len > DATA_LEN(seg)) {
+ len -= DATA_LEN(seg);
+ ++NB_SEGS(pkt);
+ ++rq_ci;
+ continue;
+ }
+ DATA_LEN(seg) = len;
+#ifdef MLX5_PMD_SOFT_COUNTERS
+ /* Increment bytes counter. */
+ rxq->stats.ibytes += PKT_LEN(pkt);
+#endif
+ /* Return packet. */
+ *(pkts++) = pkt;
+ pkt = NULL;
+ --pkts_n;
+ ++i;
+ /* Align consumer index to the next stride. */
+ rq_ci >>= sges_n;
+ ++rq_ci;
+ rq_ci <<= sges_n;
+ }
+ if (unlikely(i == 0 && ((rq_ci >> sges_n) == rxq->rq_ci)))
+ return 0;
+ /* Update the consumer index. */
+ rxq->rq_ci = rq_ci >> sges_n;
+ rte_io_wmb();
+ *rxq->cq_db = rte_cpu_to_be_32(rxq->cq_ci);
+ rte_io_wmb();
+ *rxq->rq_db = rte_cpu_to_be_32(rxq->rq_ci);
+#ifdef MLX5_PMD_SOFT_COUNTERS
+ /* Increment packets counter. */
+ rxq->stats.ipackets += i;
+#endif
+ return i;
+}
+
+/**
+ * Update LRO packet TCP header.
+ * The HW LRO feature doesn't update the TCP header after coalescing the
+ * TCP segments but supplies information in CQE to fill it by SW.
+ *
+ * @param tcp
+ * Pointer to the TCP header.
+ * @param cqe
+ * Pointer to the completion entry.
+ * @param phcsum
+ * The L3 pseudo-header checksum.
+ */
+static inline void
+mlx5_lro_update_tcp_hdr(struct rte_tcp_hdr *__rte_restrict tcp,
+ volatile struct mlx5_cqe *__rte_restrict cqe,
+ uint32_t phcsum, uint8_t l4_type)
+{
+ /*
+ * The HW calculates only the TCP payload checksum, need to complete
+ * the TCP header checksum and the L3 pseudo-header checksum.
+ */
+ uint32_t csum = phcsum + cqe->csum;
+
+ if (l4_type == MLX5_L4_HDR_TYPE_TCP_EMPTY_ACK ||
+ l4_type == MLX5_L4_HDR_TYPE_TCP_WITH_ACL) {
+ tcp->tcp_flags |= RTE_TCP_ACK_FLAG;
+ tcp->recv_ack = cqe->lro_ack_seq_num;
+ tcp->rx_win = cqe->lro_tcp_win;
+ }
+ if (cqe->lro_tcppsh_abort_dupack & MLX5_CQE_LRO_PUSH_MASK)
+ tcp->tcp_flags |= RTE_TCP_PSH_FLAG;
+ tcp->cksum = 0;
+ csum += rte_raw_cksum(tcp, (tcp->data_off >> 4) * 4);
+ csum = ((csum & 0xffff0000) >> 16) + (csum & 0xffff);
+ csum = (~csum) & 0xffff;
+ if (csum == 0)
+ csum = 0xffff;
+ tcp->cksum = csum;
+}
+
+/**
+ * Update LRO packet headers.
+ * The HW LRO feature doesn't update the L3/TCP headers after coalescing the
+ * TCP segments but supply information in CQE to fill it by SW.
+ *
+ * @param padd
+ * The packet address.
+ * @param cqe
+ * Pointer to the completion entry.
+ * @param len
+ * The packet length.
+ */
+static inline void
+mlx5_lro_update_hdr(uint8_t *__rte_restrict padd,
+ volatile struct mlx5_cqe *__rte_restrict cqe,
+ volatile struct mlx5_mini_cqe8 *mcqe,
+ struct mlx5_rxq_data *rxq, uint32_t len)
+{
+ union {
+ struct rte_ether_hdr *eth;
+ struct rte_vlan_hdr *vlan;
+ struct rte_ipv4_hdr *ipv4;
+ struct rte_ipv6_hdr *ipv6;
+ struct rte_tcp_hdr *tcp;
+ uint8_t *hdr;
+ } h = {
+ .hdr = padd,
+ };
+ uint16_t proto = h.eth->ether_type;
+ uint32_t phcsum;
+ uint8_t l4_type;
+
+ h.eth++;
+ while (proto == RTE_BE16(RTE_ETHER_TYPE_VLAN) ||
+ proto == RTE_BE16(RTE_ETHER_TYPE_QINQ)) {
+ proto = h.vlan->eth_proto;
+ h.vlan++;
+ }
+ if (proto == RTE_BE16(RTE_ETHER_TYPE_IPV4)) {
+ h.ipv4->time_to_live = cqe->lro_min_ttl;
+ h.ipv4->total_length = rte_cpu_to_be_16(len - (h.hdr - padd));
+ h.ipv4->hdr_checksum = 0;
+ h.ipv4->hdr_checksum = rte_ipv4_cksum(h.ipv4);
+ phcsum = rte_ipv4_phdr_cksum(h.ipv4, 0);
+ h.ipv4++;
+ } else {
+ h.ipv6->hop_limits = cqe->lro_min_ttl;
+ h.ipv6->payload_len = rte_cpu_to_be_16(len - (h.hdr - padd) -
+ sizeof(*h.ipv6));
+ phcsum = rte_ipv6_phdr_cksum(h.ipv6, 0);
+ h.ipv6++;
+ }
+ if (mcqe == NULL ||
+ rxq->mcqe_format != MLX5_CQE_RESP_FORMAT_L34H_STRIDX)
+ l4_type = (rte_be_to_cpu_16(cqe->hdr_type_etc) &
+ MLX5_CQE_L4_TYPE_MASK) >> MLX5_CQE_L4_TYPE_SHIFT;
+ else
+ l4_type = (rte_be_to_cpu_16(mcqe->hdr_type) &
+ MLX5_CQE_L4_TYPE_MASK) >> MLX5_CQE_L4_TYPE_SHIFT;
+ mlx5_lro_update_tcp_hdr(h.tcp, cqe, phcsum, l4_type);
+}
+
+void
+mlx5_mprq_buf_free_cb(void *addr __rte_unused, void *opaque)
+{
+ struct mlx5_mprq_buf *buf = opaque;
+
+ if (__atomic_load_n(&buf->refcnt, __ATOMIC_RELAXED) == 1) {
+ rte_mempool_put(buf->mp, buf);
+ } else if (unlikely(__atomic_sub_fetch(&buf->refcnt, 1,
+ __ATOMIC_RELAXED) == 0)) {
+ __atomic_store_n(&buf->refcnt, 1, __ATOMIC_RELAXED);
+ rte_mempool_put(buf->mp, buf);
+ }
+}
+
+void
+mlx5_mprq_buf_free(struct mlx5_mprq_buf *buf)
+{
+ mlx5_mprq_buf_free_cb(NULL, buf);
+}
+
+/**
+ * DPDK callback for RX with Multi-Packet RQ support.
+ *
+ * @param dpdk_rxq
+ * Generic pointer to RX queue structure.
+ * @param[out] pkts
+ * Array to store received packets.
+ * @param pkts_n
+ * Maximum number of packets in array.
+ *
+ * @return
+ * Number of packets successfully received (<= pkts_n).
+ */
+uint16_t
+mlx5_rx_burst_mprq(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
+{
+ struct mlx5_rxq_data *rxq = dpdk_rxq;
+ const uint32_t strd_n = 1 << rxq->strd_num_n;
+ const uint32_t strd_sz = 1 << rxq->strd_sz_n;
+ const uint32_t cq_mask = (1 << rxq->cqe_n) - 1;
+ const uint32_t wq_mask = (1 << rxq->elts_n) - 1;
+ volatile struct mlx5_cqe *cqe = &(*rxq->cqes)[rxq->cq_ci & cq_mask];
+ unsigned int i = 0;
+ uint32_t rq_ci = rxq->rq_ci;
+ uint16_t consumed_strd = rxq->consumed_strd;
+ struct mlx5_mprq_buf *buf = (*rxq->mprq_bufs)[rq_ci & wq_mask];
+
+ while (i < pkts_n) {
+ struct rte_mbuf *pkt;
+ int ret;
+ uint32_t len;
+ uint16_t strd_cnt;
+ uint16_t strd_idx;
+ uint32_t byte_cnt;
+ volatile struct mlx5_mini_cqe8 *mcqe = NULL;
+ enum mlx5_rqx_code rxq_code;
+
+ if (consumed_strd == strd_n) {
+ /* Replace WQE if the buffer is still in use. */
+ mprq_buf_replace(rxq, rq_ci & wq_mask);
+ /* Advance to the next WQE. */
+ consumed_strd = 0;
+ ++rq_ci;
+ buf = (*rxq->mprq_bufs)[rq_ci & wq_mask];
+ }
+ cqe = &(*rxq->cqes)[rxq->cq_ci & cq_mask];
+ ret = mlx5_rx_poll_len(rxq, cqe, cq_mask, &mcqe);
+ if (!ret)
+ break;
+ byte_cnt = ret;
+ len = (byte_cnt & MLX5_MPRQ_LEN_MASK) >> MLX5_MPRQ_LEN_SHIFT;
+ MLX5_ASSERT((int)len >= (rxq->crc_present << 2));
+ if (rxq->crc_present)
+ len -= RTE_ETHER_CRC_LEN;
+ if (mcqe &&
+ rxq->mcqe_format == MLX5_CQE_RESP_FORMAT_FTAG_STRIDX)
+ strd_cnt = (len / strd_sz) + !!(len % strd_sz);
+ else
+ strd_cnt = (byte_cnt & MLX5_MPRQ_STRIDE_NUM_MASK) >>
+ MLX5_MPRQ_STRIDE_NUM_SHIFT;
+ MLX5_ASSERT(strd_cnt);
+ consumed_strd += strd_cnt;
+ if (byte_cnt & MLX5_MPRQ_FILLER_MASK)
+ continue;
+ strd_idx = rte_be_to_cpu_16(mcqe == NULL ?
+ cqe->wqe_counter :
+ mcqe->stride_idx);
+ MLX5_ASSERT(strd_idx < strd_n);
+ MLX5_ASSERT(!((rte_be_to_cpu_16(cqe->wqe_id) ^ rq_ci) &
+ wq_mask));
+ pkt = rte_pktmbuf_alloc(rxq->mp);
+ if (unlikely(pkt == NULL)) {
+ ++rxq->stats.rx_nombuf;
+ break;
+ }
+ len = (byte_cnt & MLX5_MPRQ_LEN_MASK) >> MLX5_MPRQ_LEN_SHIFT;
+ MLX5_ASSERT((int)len >= (rxq->crc_present << 2));
+ if (rxq->crc_present)
+ len -= RTE_ETHER_CRC_LEN;
+ rxq_code = mprq_buf_to_pkt(rxq, pkt, len, buf,
+ strd_idx, strd_cnt);
+ if (unlikely(rxq_code != MLX5_RXQ_CODE_EXIT)) {
+ rte_pktmbuf_free_seg(pkt);
+ if (rxq_code == MLX5_RXQ_CODE_DROPPED) {
+ ++rxq->stats.idropped;
+ continue;
+ }
+ if (rxq_code == MLX5_RXQ_CODE_NOMBUF) {
+ ++rxq->stats.rx_nombuf;
+ break;
+ }
+ }
+ rxq_cq_to_mbuf(rxq, pkt, cqe, mcqe);
+ if (cqe->lro_num_seg > 1) {
+ mlx5_lro_update_hdr(rte_pktmbuf_mtod(pkt, uint8_t *),
+ cqe, mcqe, rxq, len);
+ pkt->ol_flags |= PKT_RX_LRO;
+ pkt->tso_segsz = len / cqe->lro_num_seg;
+ }
+ PKT_LEN(pkt) = len;
+ PORT(pkt) = rxq->port_id;
+#ifdef MLX5_PMD_SOFT_COUNTERS
+ /* Increment bytes counter. */
+ rxq->stats.ibytes += PKT_LEN(pkt);
+#endif
+ /* Return packet. */
+ *(pkts++) = pkt;
+ ++i;
+ }
+ /* Update the consumer indexes. */
+ rxq->consumed_strd = consumed_strd;
+ rte_io_wmb();
+ *rxq->cq_db = rte_cpu_to_be_32(rxq->cq_ci);
+ if (rq_ci != rxq->rq_ci) {
+ rxq->rq_ci = rq_ci;
+ rte_io_wmb();
+ *rxq->rq_db = rte_cpu_to_be_32(rxq->rq_ci);
+ }
+#ifdef MLX5_PMD_SOFT_COUNTERS
+ /* Increment packets counter. */
+ rxq->stats.ipackets += i;
+#endif
+ return i;
+}
+
+/**
+ * Dummy DPDK callback for RX.
+ *
+ * This function is used to temporarily replace the real callback during
+ * unsafe control operations on the queue, or in case of error.
+ *
+ * @param dpdk_rxq
+ * Generic pointer to RX queue structure.
+ * @param[out] pkts
+ * Array to store received packets.
+ * @param pkts_n
+ * Maximum number of packets in array.
+ *
+ * @return
+ * Number of packets successfully received (<= pkts_n).
+ */
+uint16_t
+removed_rx_burst(void *dpdk_rxq __rte_unused,
+ struct rte_mbuf **pkts __rte_unused,
+ uint16_t pkts_n __rte_unused)
+{
+ rte_mb();
+ return 0;
+}
+
+/*
+ * Vectorized Rx routines are not compiled in when required vector instructions
+ * are not supported on a target architecture.
+ * The following null stubs are needed for linkage when those are not included
+ * outside of this file (e.g. mlx5_rxtx_vec_sse.c for x86).
+ */
+
+__rte_weak uint16_t
+mlx5_rx_burst_vec(void *dpdk_rxq __rte_unused,
+ struct rte_mbuf **pkts __rte_unused,
+ uint16_t pkts_n __rte_unused)
+{
+ return 0;
+}
+
+__rte_weak uint16_t
+mlx5_rx_burst_mprq_vec(void *dpdk_rxq __rte_unused,
+ struct rte_mbuf **pkts __rte_unused,
+ uint16_t pkts_n __rte_unused)
+{
+ return 0;
+}
+
+__rte_weak int
+mlx5_rxq_check_vec_support(struct mlx5_rxq_data *rxq __rte_unused)
+{
+ return -ENOTSUP;
+}
+
+__rte_weak int
+mlx5_check_vec_rx_support(struct rte_eth_dev *dev __rte_unused)
+{
+ return -ENOTSUP;
+}
+
uint64_t hash_fields,
const uint16_t *queues, uint32_t queues_n);
-/* mlx5_rxtx.c */
+/* mlx5_rx.c */
uint16_t mlx5_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n);
void mlx5_rxq_initialize(struct mlx5_rxq_data *rxq);
int mlx5_rx_burst_mode_get(struct rte_eth_dev *dev, uint16_t rx_queue_id,
struct rte_eth_burst_mode *mode);
-/* Vectorized version of mlx5_rxtx.c */
+/* Vectorized version of mlx5_rx.c */
int mlx5_rxq_check_vec_support(struct mlx5_rxq_data *rxq_data);
int mlx5_check_vec_rx_support(struct rte_eth_dev *dev);
uint16_t mlx5_rx_burst_vec(void *dpdk_rxq, struct rte_mbuf **pkts,
static_assert(MLX5_WQE_SIZE == 4 * MLX5_WSEG_SIZE,
"invalid WQE size");
-static __rte_always_inline uint32_t
-rxq_cq_to_pkt_type(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cqe,
- volatile struct mlx5_mini_cqe8 *mcqe);
-
-static __rte_always_inline int
-mlx5_rx_poll_len(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cqe,
- uint16_t cqe_cnt, volatile struct mlx5_mini_cqe8 **mcqe);
-
-static __rte_always_inline uint32_t
-rxq_cq_to_ol_flags(volatile struct mlx5_cqe *cqe);
-
-static __rte_always_inline void
-rxq_cq_to_mbuf(struct mlx5_rxq_data *rxq, struct rte_mbuf *pkt,
- volatile struct mlx5_cqe *cqe,
- volatile struct mlx5_mini_cqe8 *mcqe);
-
-static int
-mlx5_queue_state_modify(struct rte_eth_dev *dev,
- struct mlx5_mp_arg_queue_state_modify *sm);
-
-static inline void
-mlx5_lro_update_tcp_hdr(struct rte_tcp_hdr *__rte_restrict tcp,
- volatile struct mlx5_cqe *__rte_restrict cqe,
- uint32_t phcsum, uint8_t l4_type);
-
-static inline void
-mlx5_lro_update_hdr(uint8_t *__rte_restrict padd,
- volatile struct mlx5_cqe *__rte_restrict cqe,
- volatile struct mlx5_mini_cqe8 *mcqe,
- struct mlx5_rxq_data *rxq, uint32_t len);
-
uint32_t mlx5_ptype_table[] __rte_cache_aligned = {
[0xff] = RTE_PTYPE_ALL_MASK, /* Last entry for errored packet. */
};
return mlx5_cksum_table[idx];
}
-/**
- * Internal function to compute the number of used descriptors in an RX queue
- *
- * @param rxq
- * The Rx queue.
- *
- * @return
- * The number of used rx descriptor.
- */
-static uint32_t
-rx_queue_count(struct mlx5_rxq_data *rxq)
-{
- struct rxq_zip *zip = &rxq->zip;
- volatile struct mlx5_cqe *cqe;
- const unsigned int cqe_n = (1 << rxq->cqe_n);
- const unsigned int sges_n = (1 << rxq->sges_n);
- const unsigned int elts_n = (1 << rxq->elts_n);
- const unsigned int strd_n = (1 << rxq->strd_num_n);
- const unsigned int cqe_cnt = cqe_n - 1;
- unsigned int cq_ci, used;
-
- /* if we are processing a compressed cqe */
- if (zip->ai) {
- used = zip->cqe_cnt - zip->ai;
- 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) != MLX5_CQE_STATUS_HW_OWN) {
- int8_t op_own;
- unsigned int n;
-
- op_own = cqe->op_own;
- if (MLX5_CQE_FORMAT(op_own) == MLX5_COMPRESSED)
- n = rte_be_to_cpu_32(cqe->byte_cnt);
- else
- n = 1;
- cq_ci += n;
- used += n;
- cqe = &(*rxq->cqes)[cq_ci & cqe_cnt];
- }
- used = RTE_MIN(used * sges_n, elts_n * strd_n);
- return used;
-}
-
-/**
- * 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 mlx5_rxq_data *rxq = rx_queue;
- struct mlx5_rxq_ctrl *rxq_ctrl =
- container_of(rxq, struct mlx5_rxq_ctrl, rxq);
- struct rte_eth_dev *dev = ETH_DEV(rxq_ctrl->priv);
-
- if (dev->rx_pkt_burst == NULL ||
- dev->rx_pkt_burst == removed_rx_burst) {
- rte_errno = ENOTSUP;
- return -rte_errno;
- }
- if (offset >= (1 << rxq->cqe_n)) {
- rte_errno = EINVAL;
- return -rte_errno;
- }
- if (offset < rx_queue_count(rxq))
- return RTE_ETH_RX_DESC_DONE;
- return RTE_ETH_RX_DESC_AVAIL;
-}
-
-/**
- * DPDK callback to get the RX queue information
- *
- * @param dev
- * Pointer to the device structure.
- *
- * @param rx_queue_id
- * Rx queue identificator.
- *
- * @param qinfo
- * Pointer to the RX queue information structure.
- *
- * @return
- * None.
- */
-
-void
-mlx5_rxq_info_get(struct rte_eth_dev *dev, uint16_t rx_queue_id,
- struct rte_eth_rxq_info *qinfo)
-{
- struct mlx5_priv *priv = dev->data->dev_private;
- struct mlx5_rxq_data *rxq = (*priv->rxqs)[rx_queue_id];
- struct mlx5_rxq_ctrl *rxq_ctrl =
- container_of(rxq, struct mlx5_rxq_ctrl, rxq);
-
- if (!rxq)
- return;
- qinfo->mp = mlx5_rxq_mprq_enabled(rxq) ?
- rxq->mprq_mp : rxq->mp;
- qinfo->conf.rx_thresh.pthresh = 0;
- qinfo->conf.rx_thresh.hthresh = 0;
- qinfo->conf.rx_thresh.wthresh = 0;
- qinfo->conf.rx_free_thresh = rxq->rq_repl_thresh;
- qinfo->conf.rx_drop_en = 1;
- qinfo->conf.rx_deferred_start = rxq_ctrl ? 0 : 1;
- qinfo->conf.offloads = dev->data->dev_conf.rxmode.offloads;
- qinfo->scattered_rx = dev->data->scattered_rx;
- qinfo->nb_desc = mlx5_rxq_mprq_enabled(rxq) ?
- (1 << rxq->elts_n) * (1 << rxq->strd_num_n) :
- (1 << rxq->elts_n);
-}
-
-/**
- * DPDK callback to get the RX packet burst mode information
- *
- * @param dev
- * Pointer to the device structure.
- *
- * @param rx_queue_id
- * Rx queue identificatior.
- *
- * @param mode
- * Pointer to the burts mode information.
- *
- * @return
- * 0 as success, -EINVAL as failure.
- */
-
-int
-mlx5_rx_burst_mode_get(struct rte_eth_dev *dev,
- uint16_t rx_queue_id __rte_unused,
- struct rte_eth_burst_mode *mode)
-{
- eth_rx_burst_t pkt_burst = dev->rx_pkt_burst;
- struct mlx5_priv *priv = dev->data->dev_private;
- struct mlx5_rxq_data *rxq;
-
- rxq = (*priv->rxqs)[rx_queue_id];
- if (!rxq) {
- rte_errno = EINVAL;
- return -rte_errno;
- }
- if (pkt_burst == mlx5_rx_burst) {
- snprintf(mode->info, sizeof(mode->info), "%s", "Scalar");
- } else if (pkt_burst == mlx5_rx_burst_mprq) {
- snprintf(mode->info, sizeof(mode->info), "%s", "Multi-Packet RQ");
- } else if (pkt_burst == mlx5_rx_burst_vec) {
-#if defined RTE_ARCH_X86_64
- snprintf(mode->info, sizeof(mode->info), "%s", "Vector SSE");
-#elif defined RTE_ARCH_ARM64
- snprintf(mode->info, sizeof(mode->info), "%s", "Vector Neon");
-#elif defined RTE_ARCH_PPC_64
- snprintf(mode->info, sizeof(mode->info), "%s", "Vector AltiVec");
-#else
- return -EINVAL;
-#endif
- } else if (pkt_burst == mlx5_rx_burst_mprq_vec) {
-#if defined RTE_ARCH_X86_64
- snprintf(mode->info, sizeof(mode->info), "%s", "MPRQ Vector SSE");
-#elif defined RTE_ARCH_ARM64
- snprintf(mode->info, sizeof(mode->info), "%s", "MPRQ Vector Neon");
-#elif defined RTE_ARCH_PPC_64
- snprintf(mode->info, sizeof(mode->info), "%s", "MPRQ Vector AltiVec");
-#else
- return -EINVAL;
-#endif
- } else {
- return -EINVAL;
- }
- return 0;
-}
-
-/**
- * DPDK callback to get the number of used descriptors in a RX queue
- *
- * @param dev
- * Pointer to the device structure.
- *
- * @param rx_queue_id
- * The Rx queue.
- *
- * @return
- * The number of used rx descriptor.
- * -EINVAL if the queue is invalid
- */
-uint32_t
-mlx5_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
-{
- struct mlx5_priv *priv = dev->data->dev_private;
- struct mlx5_rxq_data *rxq;
-
- if (dev->rx_pkt_burst == NULL ||
- dev->rx_pkt_burst == removed_rx_burst) {
- rte_errno = ENOTSUP;
- return -rte_errno;
- }
- rxq = (*priv->rxqs)[rx_queue_id];
- if (!rxq) {
- rte_errno = EINVAL;
- return -rte_errno;
- }
- return rx_queue_count(rxq);
-}
-
#define MLX5_SYSTEM_LOG_DIR "/var/log"
/**
* Dump debug information to log file.
return 0;
}
-/**
- * Translate RX completion flags to packet type.
- *
- * @param[in] rxq
- * Pointer to RX queue structure.
- * @param[in] cqe
- * Pointer to CQE.
- *
- * @note: fix mlx5_dev_supported_ptypes_get() if any change here.
- *
- * @return
- * Packet type for struct rte_mbuf.
- */
-static inline uint32_t
-rxq_cq_to_pkt_type(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cqe,
- volatile struct mlx5_mini_cqe8 *mcqe)
-{
- uint8_t idx;
- uint8_t ptype;
- uint8_t pinfo = (cqe->pkt_info & 0x3) << 6;
-
- /* Get l3/l4 header from mini-CQE in case L3/L4 format*/
- if (mcqe == NULL ||
- rxq->mcqe_format != MLX5_CQE_RESP_FORMAT_L34H_STRIDX)
- ptype = (cqe->hdr_type_etc & 0xfc00) >> 10;
- else
- ptype = mcqe->hdr_type >> 2;
- /*
- * The index to the array should have:
- * bit[1:0] = l3_hdr_type
- * bit[4:2] = l4_hdr_type
- * bit[5] = ip_frag
- * bit[6] = tunneled
- * bit[7] = outer_l3_type
- */
- idx = pinfo | ptype;
- return mlx5_ptype_table[idx] | rxq->tunnel * !!(idx & (1 << 6));
-}
-
-/**
- * Initialize Rx WQ and indexes.
- *
- * @param[in] rxq
- * Pointer to RX queue structure.
- */
-void
-mlx5_rxq_initialize(struct mlx5_rxq_data *rxq)
-{
- const unsigned int wqe_n = 1 << rxq->elts_n;
- unsigned int i;
-
- for (i = 0; (i != wqe_n); ++i) {
- volatile struct mlx5_wqe_data_seg *scat;
- uintptr_t addr;
- uint32_t byte_count;
-
- if (mlx5_rxq_mprq_enabled(rxq)) {
- struct mlx5_mprq_buf *buf = (*rxq->mprq_bufs)[i];
-
- scat = &((volatile struct mlx5_wqe_mprq *)
- rxq->wqes)[i].dseg;
- addr = (uintptr_t)mlx5_mprq_buf_addr(buf,
- 1 << rxq->strd_num_n);
- byte_count = (1 << rxq->strd_sz_n) *
- (1 << rxq->strd_num_n);
- } else {
- struct rte_mbuf *buf = (*rxq->elts)[i];
-
- scat = &((volatile struct mlx5_wqe_data_seg *)
- rxq->wqes)[i];
- addr = rte_pktmbuf_mtod(buf, uintptr_t);
- byte_count = DATA_LEN(buf);
- }
- /* scat->addr must be able to store a pointer. */
- MLX5_ASSERT(sizeof(scat->addr) >= sizeof(uintptr_t));
- *scat = (struct mlx5_wqe_data_seg){
- .addr = rte_cpu_to_be_64(addr),
- .byte_count = rte_cpu_to_be_32(byte_count),
- .lkey = mlx5_rx_addr2mr(rxq, addr),
- };
- }
- rxq->consumed_strd = 0;
- rxq->decompressed = 0;
- rxq->rq_pi = 0;
- rxq->zip = (struct rxq_zip){
- .ai = 0,
- };
- rxq->elts_ci = mlx5_rxq_mprq_enabled(rxq) ?
- (wqe_n >> rxq->sges_n) * (1 << rxq->strd_num_n) : 0;
- /* Update doorbell counter. */
- rxq->rq_ci = wqe_n >> rxq->sges_n;
- rte_io_wmb();
- *rxq->rq_db = rte_cpu_to_be_32(rxq->rq_ci);
-}
-
/**
* Modify a Verbs/DevX queue state.
* This must be called from the primary process.
* @return
* 0 in case of success else non-zero value.
*/
-static int
+int
mlx5_queue_state_modify(struct rte_eth_dev *dev,
struct mlx5_mp_arg_queue_state_modify *sm)
{
return ret;
}
-/**
- * Handle a Rx error.
- * The function inserts the RQ state to reset when the first error CQE is
- * shown, then drains the CQ by the caller function loop. When the CQ is empty,
- * it moves the RQ state to ready and initializes the RQ.
- * Next CQE identification and error counting are in the caller responsibility.
- *
- * @param[in] rxq
- * Pointer to RX queue structure.
- * @param[in] vec
- * 1 when called from vectorized Rx burst, need to prepare mbufs for the RQ.
- * 0 when called from non-vectorized Rx burst.
- *
- * @return
- * -1 in case of recovery error, otherwise the CQE status.
- */
-int
-mlx5_rx_err_handle(struct mlx5_rxq_data *rxq, uint8_t vec)
-{
- const uint16_t cqe_n = 1 << rxq->cqe_n;
- const uint16_t cqe_mask = cqe_n - 1;
- const uint16_t wqe_n = 1 << rxq->elts_n;
- const uint16_t strd_n = 1 << rxq->strd_num_n;
- struct mlx5_rxq_ctrl *rxq_ctrl =
- container_of(rxq, struct mlx5_rxq_ctrl, rxq);
- union {
- volatile struct mlx5_cqe *cqe;
- volatile struct mlx5_err_cqe *err_cqe;
- } u = {
- .cqe = &(*rxq->cqes)[rxq->cq_ci & cqe_mask],
- };
- struct mlx5_mp_arg_queue_state_modify sm;
- int ret;
-
- switch (rxq->err_state) {
- case MLX5_RXQ_ERR_STATE_NO_ERROR:
- rxq->err_state = MLX5_RXQ_ERR_STATE_NEED_RESET;
- /* Fall-through */
- case MLX5_RXQ_ERR_STATE_NEED_RESET:
- sm.is_wq = 1;
- sm.queue_id = rxq->idx;
- sm.state = IBV_WQS_RESET;
- if (mlx5_queue_state_modify(ETH_DEV(rxq_ctrl->priv), &sm))
- return -1;
- if (rxq_ctrl->dump_file_n <
- rxq_ctrl->priv->config.max_dump_files_num) {
- MKSTR(err_str, "Unexpected CQE error syndrome "
- "0x%02x CQN = %u RQN = %u wqe_counter = %u"
- " rq_ci = %u cq_ci = %u", u.err_cqe->syndrome,
- rxq->cqn, rxq_ctrl->wqn,
- rte_be_to_cpu_16(u.err_cqe->wqe_counter),
- rxq->rq_ci << rxq->sges_n, rxq->cq_ci);
- MKSTR(name, "dpdk_mlx5_port_%u_rxq_%u_%u",
- rxq->port_id, rxq->idx, (uint32_t)rte_rdtsc());
- mlx5_dump_debug_information(name, NULL, err_str, 0);
- mlx5_dump_debug_information(name, "MLX5 Error CQ:",
- (const void *)((uintptr_t)
- rxq->cqes),
- sizeof(*u.cqe) * cqe_n);
- mlx5_dump_debug_information(name, "MLX5 Error RQ:",
- (const void *)((uintptr_t)
- rxq->wqes),
- 16 * wqe_n);
- rxq_ctrl->dump_file_n++;
- }
- rxq->err_state = MLX5_RXQ_ERR_STATE_NEED_READY;
- /* Fall-through */
- case MLX5_RXQ_ERR_STATE_NEED_READY:
- ret = check_cqe(u.cqe, cqe_n, rxq->cq_ci);
- if (ret == MLX5_CQE_STATUS_HW_OWN) {
- rte_io_wmb();
- *rxq->cq_db = rte_cpu_to_be_32(rxq->cq_ci);
- rte_io_wmb();
- /*
- * The RQ consumer index must be zeroed while moving
- * from RESET state to RDY state.
- */
- *rxq->rq_db = rte_cpu_to_be_32(0);
- rte_io_wmb();
- sm.is_wq = 1;
- sm.queue_id = rxq->idx;
- sm.state = IBV_WQS_RDY;
- if (mlx5_queue_state_modify(ETH_DEV(rxq_ctrl->priv),
- &sm))
- return -1;
- if (vec) {
- const uint32_t elts_n =
- mlx5_rxq_mprq_enabled(rxq) ?
- wqe_n * strd_n : wqe_n;
- const uint32_t e_mask = elts_n - 1;
- uint32_t elts_ci =
- mlx5_rxq_mprq_enabled(rxq) ?
- rxq->elts_ci : rxq->rq_ci;
- uint32_t elt_idx;
- struct rte_mbuf **elt;
- int i;
- unsigned int n = elts_n - (elts_ci -
- rxq->rq_pi);
-
- for (i = 0; i < (int)n; ++i) {
- elt_idx = (elts_ci + i) & e_mask;
- elt = &(*rxq->elts)[elt_idx];
- *elt = rte_mbuf_raw_alloc(rxq->mp);
- if (!*elt) {
- for (i--; i >= 0; --i) {
- elt_idx = (elts_ci +
- i) & elts_n;
- elt = &(*rxq->elts)
- [elt_idx];
- rte_pktmbuf_free_seg
- (*elt);
- }
- return -1;
- }
- }
- for (i = 0; i < (int)elts_n; ++i) {
- elt = &(*rxq->elts)[i];
- DATA_LEN(*elt) =
- (uint16_t)((*elt)->buf_len -
- rte_pktmbuf_headroom(*elt));
- }
- /* Padding with a fake mbuf for vec Rx. */
- for (i = 0; i < MLX5_VPMD_DESCS_PER_LOOP; ++i)
- (*rxq->elts)[elts_n + i] =
- &rxq->fake_mbuf;
- }
- mlx5_rxq_initialize(rxq);
- rxq->err_state = MLX5_RXQ_ERR_STATE_NO_ERROR;
- }
- return ret;
- default:
- return -1;
- }
-}
-
-/**
- * Get size of the next packet for a given CQE. For compressed CQEs, the
- * consumer index is updated only once all packets of the current one have
- * been processed.
- *
- * @param rxq
- * Pointer to RX queue.
- * @param cqe
- * CQE to process.
- * @param[out] mcqe
- * Store pointer to mini-CQE if compressed. Otherwise, the pointer is not
- * written.
- *
- * @return
- * 0 in case of empty CQE, otherwise the packet size in bytes.
- */
-static inline int
-mlx5_rx_poll_len(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cqe,
- uint16_t cqe_cnt, volatile struct mlx5_mini_cqe8 **mcqe)
-{
- struct rxq_zip *zip = &rxq->zip;
- uint16_t cqe_n = cqe_cnt + 1;
- int len;
- uint16_t idx, end;
-
- do {
- len = 0;
- /* Process compressed data in the CQE and mini arrays. */
- if (zip->ai) {
- volatile struct mlx5_mini_cqe8 (*mc)[8] =
- (volatile struct mlx5_mini_cqe8 (*)[8])
- (uintptr_t)(&(*rxq->cqes)[zip->ca &
- cqe_cnt].pkt_info);
- len = rte_be_to_cpu_32((*mc)[zip->ai & 7].byte_cnt &
- rxq->byte_mask);
- *mcqe = &(*mc)[zip->ai & 7];
- if ((++zip->ai & 7) == 0) {
- /* Invalidate consumed CQEs */
- idx = zip->ca;
- end = zip->na;
- while (idx != end) {
- (*rxq->cqes)[idx & cqe_cnt].op_own =
- MLX5_CQE_INVALIDATE;
- ++idx;
- }
- /*
- * Increment consumer index to skip the number
- * of CQEs consumed. Hardware leaves holes in
- * the CQ ring for software use.
- */
- zip->ca = zip->na;
- zip->na += 8;
- }
- if (unlikely(rxq->zip.ai == rxq->zip.cqe_cnt)) {
- /* Invalidate the rest */
- idx = zip->ca;
- end = zip->cq_ci;
-
- while (idx != end) {
- (*rxq->cqes)[idx & cqe_cnt].op_own =
- MLX5_CQE_INVALIDATE;
- ++idx;
- }
- rxq->cq_ci = zip->cq_ci;
- zip->ai = 0;
- }
- /*
- * No compressed data, get next CQE and verify if it is
- * compressed.
- */
- } else {
- int ret;
- int8_t op_own;
- uint32_t cq_ci;
-
- ret = check_cqe(cqe, cqe_n, rxq->cq_ci);
- if (unlikely(ret != MLX5_CQE_STATUS_SW_OWN)) {
- if (unlikely(ret == MLX5_CQE_STATUS_ERR ||
- rxq->err_state)) {
- ret = mlx5_rx_err_handle(rxq, 0);
- if (ret == MLX5_CQE_STATUS_HW_OWN ||
- ret == -1)
- return 0;
- } else {
- return 0;
- }
- }
- /*
- * Introduce the local variable to have queue cq_ci
- * index in queue structure always consistent with
- * actual CQE boundary (not pointing to the middle
- * of compressed CQE session).
- */
- cq_ci = rxq->cq_ci + 1;
- op_own = cqe->op_own;
- if (MLX5_CQE_FORMAT(op_own) == MLX5_COMPRESSED) {
- volatile struct mlx5_mini_cqe8 (*mc)[8] =
- (volatile struct mlx5_mini_cqe8 (*)[8])
- (uintptr_t)(&(*rxq->cqes)
- [cq_ci & cqe_cnt].pkt_info);
-
- /* Fix endianness. */
- zip->cqe_cnt = rte_be_to_cpu_32(cqe->byte_cnt);
- /*
- * Current mini array position is the one
- * returned by check_cqe64().
- *
- * If completion comprises several mini arrays,
- * as a special case the second one is located
- * 7 CQEs after the initial CQE instead of 8
- * for subsequent ones.
- */
- zip->ca = cq_ci;
- zip->na = zip->ca + 7;
- /* Compute the next non compressed CQE. */
- zip->cq_ci = rxq->cq_ci + zip->cqe_cnt;
- /* Get packet size to return. */
- len = rte_be_to_cpu_32((*mc)[0].byte_cnt &
- rxq->byte_mask);
- *mcqe = &(*mc)[0];
- zip->ai = 1;
- /* Prefetch all to be invalidated */
- idx = zip->ca;
- end = zip->cq_ci;
- while (idx != end) {
- rte_prefetch0(&(*rxq->cqes)[(idx) &
- cqe_cnt]);
- ++idx;
- }
- } else {
- rxq->cq_ci = cq_ci;
- len = rte_be_to_cpu_32(cqe->byte_cnt);
- }
- }
- if (unlikely(rxq->err_state)) {
- cqe = &(*rxq->cqes)[rxq->cq_ci & cqe_cnt];
- ++rxq->stats.idropped;
- } else {
- return len;
- }
- } while (1);
-}
-
-/**
- * Translate RX completion flags to offload flags.
- *
- * @param[in] cqe
- * Pointer to CQE.
- *
- * @return
- * Offload flags (ol_flags) for struct rte_mbuf.
- */
-static inline uint32_t
-rxq_cq_to_ol_flags(volatile struct mlx5_cqe *cqe)
-{
- uint32_t ol_flags = 0;
- uint16_t flags = rte_be_to_cpu_16(cqe->hdr_type_etc);
-
- ol_flags =
- TRANSPOSE(flags,
- MLX5_CQE_RX_L3_HDR_VALID,
- PKT_RX_IP_CKSUM_GOOD) |
- TRANSPOSE(flags,
- MLX5_CQE_RX_L4_HDR_VALID,
- PKT_RX_L4_CKSUM_GOOD);
- return ol_flags;
-}
-
-/**
- * Fill in mbuf fields from RX completion flags.
- * Note that pkt->ol_flags should be initialized outside of this function.
- *
- * @param rxq
- * Pointer to RX queue.
- * @param pkt
- * mbuf to fill.
- * @param cqe
- * CQE to process.
- * @param rss_hash_res
- * Packet RSS Hash result.
- */
-static inline void
-rxq_cq_to_mbuf(struct mlx5_rxq_data *rxq, struct rte_mbuf *pkt,
- volatile struct mlx5_cqe *cqe,
- volatile struct mlx5_mini_cqe8 *mcqe)
-{
- /* Update packet information. */
- pkt->packet_type = rxq_cq_to_pkt_type(rxq, cqe, mcqe);
-
- if (rxq->rss_hash) {
- uint32_t rss_hash_res = 0;
-
- /* If compressed, take hash result from mini-CQE. */
- if (mcqe == NULL ||
- rxq->mcqe_format != MLX5_CQE_RESP_FORMAT_HASH)
- rss_hash_res = rte_be_to_cpu_32(cqe->rx_hash_res);
- else
- rss_hash_res = rte_be_to_cpu_32(mcqe->rx_hash_result);
- if (rss_hash_res) {
- pkt->hash.rss = rss_hash_res;
- pkt->ol_flags |= PKT_RX_RSS_HASH;
- }
- }
- if (rxq->mark) {
- uint32_t mark = 0;
-
- /* If compressed, take flow tag from mini-CQE. */
- if (mcqe == NULL ||
- rxq->mcqe_format != MLX5_CQE_RESP_FORMAT_FTAG_STRIDX)
- mark = cqe->sop_drop_qpn;
- else
- mark = ((mcqe->byte_cnt_flow & 0xff) << 8) |
- (mcqe->flow_tag_high << 16);
- if (MLX5_FLOW_MARK_IS_VALID(mark)) {
- pkt->ol_flags |= PKT_RX_FDIR;
- if (mark != RTE_BE32(MLX5_FLOW_MARK_DEFAULT)) {
- pkt->ol_flags |= PKT_RX_FDIR_ID;
- pkt->hash.fdir.hi = mlx5_flow_mark_get(mark);
- }
- }
- }
- if (rxq->dynf_meta) {
- uint32_t meta = cqe->flow_table_metadata &
- rxq->flow_meta_port_mask;
-
- if (meta) {
- pkt->ol_flags |= rxq->flow_meta_mask;
- *RTE_MBUF_DYNFIELD(pkt, rxq->flow_meta_offset,
- uint32_t *) = meta;
- }
- }
- if (rxq->csum)
- pkt->ol_flags |= rxq_cq_to_ol_flags(cqe);
- if (rxq->vlan_strip) {
- bool vlan_strip;
-
- if (mcqe == NULL ||
- rxq->mcqe_format != MLX5_CQE_RESP_FORMAT_L34H_STRIDX)
- vlan_strip = cqe->hdr_type_etc &
- RTE_BE16(MLX5_CQE_VLAN_STRIPPED);
- else
- vlan_strip = mcqe->hdr_type &
- RTE_BE16(MLX5_CQE_VLAN_STRIPPED);
- if (vlan_strip) {
- pkt->ol_flags |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
- pkt->vlan_tci = rte_be_to_cpu_16(cqe->vlan_info);
- }
- }
- if (rxq->hw_timestamp) {
- uint64_t ts = rte_be_to_cpu_64(cqe->timestamp);
-
- if (rxq->rt_timestamp)
- ts = mlx5_txpp_convert_rx_ts(rxq->sh, ts);
- mlx5_timestamp_set(pkt, rxq->timestamp_offset, ts);
- pkt->ol_flags |= rxq->timestamp_rx_flag;
- }
-}
-
-/**
- * DPDK callback for RX.
- *
- * @param dpdk_rxq
- * Generic pointer to RX queue structure.
- * @param[out] pkts
- * Array to store received packets.
- * @param pkts_n
- * Maximum number of packets in array.
- *
- * @return
- * Number of packets successfully received (<= pkts_n).
- */
-uint16_t
-mlx5_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
-{
- struct mlx5_rxq_data *rxq = dpdk_rxq;
- const unsigned int wqe_cnt = (1 << rxq->elts_n) - 1;
- const unsigned int cqe_cnt = (1 << rxq->cqe_n) - 1;
- const unsigned int sges_n = rxq->sges_n;
- struct rte_mbuf *pkt = NULL;
- struct rte_mbuf *seg = NULL;
- volatile struct mlx5_cqe *cqe =
- &(*rxq->cqes)[rxq->cq_ci & cqe_cnt];
- unsigned int i = 0;
- unsigned int rq_ci = rxq->rq_ci << sges_n;
- int len = 0; /* keep its value across iterations. */
-
- while (pkts_n) {
- unsigned int idx = rq_ci & wqe_cnt;
- volatile struct mlx5_wqe_data_seg *wqe =
- &((volatile struct mlx5_wqe_data_seg *)rxq->wqes)[idx];
- struct rte_mbuf *rep = (*rxq->elts)[idx];
- volatile struct mlx5_mini_cqe8 *mcqe = NULL;
-
- if (pkt)
- NEXT(seg) = rep;
- seg = rep;
- rte_prefetch0(seg);
- rte_prefetch0(cqe);
- rte_prefetch0(wqe);
- /* Allocate the buf from the same pool. */
- rep = rte_mbuf_raw_alloc(seg->pool);
- if (unlikely(rep == NULL)) {
- ++rxq->stats.rx_nombuf;
- if (!pkt) {
- /*
- * no buffers before we even started,
- * bail out silently.
- */
- break;
- }
- while (pkt != seg) {
- MLX5_ASSERT(pkt != (*rxq->elts)[idx]);
- rep = NEXT(pkt);
- NEXT(pkt) = NULL;
- NB_SEGS(pkt) = 1;
- rte_mbuf_raw_free(pkt);
- pkt = rep;
- }
- rq_ci >>= sges_n;
- ++rq_ci;
- rq_ci <<= sges_n;
- break;
- }
- if (!pkt) {
- cqe = &(*rxq->cqes)[rxq->cq_ci & cqe_cnt];
- len = mlx5_rx_poll_len(rxq, cqe, cqe_cnt, &mcqe);
- if (!len) {
- rte_mbuf_raw_free(rep);
- break;
- }
- pkt = seg;
- MLX5_ASSERT(len >= (rxq->crc_present << 2));
- pkt->ol_flags &= EXT_ATTACHED_MBUF;
- rxq_cq_to_mbuf(rxq, pkt, cqe, mcqe);
- if (rxq->crc_present)
- len -= RTE_ETHER_CRC_LEN;
- PKT_LEN(pkt) = len;
- if (cqe->lro_num_seg > 1) {
- mlx5_lro_update_hdr
- (rte_pktmbuf_mtod(pkt, uint8_t *), cqe,
- mcqe, rxq, len);
- pkt->ol_flags |= PKT_RX_LRO;
- pkt->tso_segsz = len / cqe->lro_num_seg;
- }
- }
- DATA_LEN(rep) = DATA_LEN(seg);
- PKT_LEN(rep) = PKT_LEN(seg);
- SET_DATA_OFF(rep, DATA_OFF(seg));
- PORT(rep) = PORT(seg);
- (*rxq->elts)[idx] = rep;
- /*
- * Fill NIC descriptor with the new buffer. The lkey and size
- * of the buffers are already known, only the buffer address
- * changes.
- */
- wqe->addr = rte_cpu_to_be_64(rte_pktmbuf_mtod(rep, uintptr_t));
- /* If there's only one MR, no need to replace LKey in WQE. */
- if (unlikely(mlx5_mr_btree_len(&rxq->mr_ctrl.cache_bh) > 1))
- wqe->lkey = mlx5_rx_mb2mr(rxq, rep);
- if (len > DATA_LEN(seg)) {
- len -= DATA_LEN(seg);
- ++NB_SEGS(pkt);
- ++rq_ci;
- continue;
- }
- DATA_LEN(seg) = len;
-#ifdef MLX5_PMD_SOFT_COUNTERS
- /* Increment bytes counter. */
- rxq->stats.ibytes += PKT_LEN(pkt);
-#endif
- /* Return packet. */
- *(pkts++) = pkt;
- pkt = NULL;
- --pkts_n;
- ++i;
- /* Align consumer index to the next stride. */
- rq_ci >>= sges_n;
- ++rq_ci;
- rq_ci <<= sges_n;
- }
- if (unlikely((i == 0) && ((rq_ci >> sges_n) == rxq->rq_ci)))
- return 0;
- /* Update the consumer index. */
- rxq->rq_ci = rq_ci >> sges_n;
- rte_io_wmb();
- *rxq->cq_db = rte_cpu_to_be_32(rxq->cq_ci);
- rte_io_wmb();
- *rxq->rq_db = rte_cpu_to_be_32(rxq->rq_ci);
-#ifdef MLX5_PMD_SOFT_COUNTERS
- /* Increment packets counter. */
- rxq->stats.ipackets += i;
-#endif
- return i;
-}
-
-/**
- * Update LRO packet TCP header.
- * The HW LRO feature doesn't update the TCP header after coalescing the
- * TCP segments but supplies information in CQE to fill it by SW.
- *
- * @param tcp
- * Pointer to the TCP header.
- * @param cqe
- * Pointer to the completion entry..
- * @param phcsum
- * The L3 pseudo-header checksum.
- */
-static inline void
-mlx5_lro_update_tcp_hdr(struct rte_tcp_hdr *__rte_restrict tcp,
- volatile struct mlx5_cqe *__rte_restrict cqe,
- uint32_t phcsum, uint8_t l4_type)
-{
- /*
- * The HW calculates only the TCP payload checksum, need to complete
- * the TCP header checksum and the L3 pseudo-header checksum.
- */
- uint32_t csum = phcsum + cqe->csum;
-
- if (l4_type == MLX5_L4_HDR_TYPE_TCP_EMPTY_ACK ||
- l4_type == MLX5_L4_HDR_TYPE_TCP_WITH_ACL) {
- tcp->tcp_flags |= RTE_TCP_ACK_FLAG;
- tcp->recv_ack = cqe->lro_ack_seq_num;
- tcp->rx_win = cqe->lro_tcp_win;
- }
- if (cqe->lro_tcppsh_abort_dupack & MLX5_CQE_LRO_PUSH_MASK)
- tcp->tcp_flags |= RTE_TCP_PSH_FLAG;
- tcp->cksum = 0;
- csum += rte_raw_cksum(tcp, (tcp->data_off >> 4) * 4);
- csum = ((csum & 0xffff0000) >> 16) + (csum & 0xffff);
- csum = (~csum) & 0xffff;
- if (csum == 0)
- csum = 0xffff;
- tcp->cksum = csum;
-}
-
-/**
- * Update LRO packet headers.
- * The HW LRO feature doesn't update the L3/TCP headers after coalescing the
- * TCP segments but supply information in CQE to fill it by SW.
- *
- * @param padd
- * The packet address.
- * @param cqe
- * Pointer to the completion entry..
- * @param len
- * The packet length.
- */
-static inline void
-mlx5_lro_update_hdr(uint8_t *__rte_restrict padd,
- volatile struct mlx5_cqe *__rte_restrict cqe,
- volatile struct mlx5_mini_cqe8 *mcqe,
- struct mlx5_rxq_data *rxq, uint32_t len)
-{
- union {
- struct rte_ether_hdr *eth;
- struct rte_vlan_hdr *vlan;
- struct rte_ipv4_hdr *ipv4;
- struct rte_ipv6_hdr *ipv6;
- struct rte_tcp_hdr *tcp;
- uint8_t *hdr;
- } h = {
- .hdr = padd,
- };
- uint16_t proto = h.eth->ether_type;
- uint32_t phcsum;
- uint8_t l4_type;
-
- h.eth++;
- while (proto == RTE_BE16(RTE_ETHER_TYPE_VLAN) ||
- proto == RTE_BE16(RTE_ETHER_TYPE_QINQ)) {
- proto = h.vlan->eth_proto;
- h.vlan++;
- }
- if (proto == RTE_BE16(RTE_ETHER_TYPE_IPV4)) {
- h.ipv4->time_to_live = cqe->lro_min_ttl;
- h.ipv4->total_length = rte_cpu_to_be_16(len - (h.hdr - padd));
- h.ipv4->hdr_checksum = 0;
- h.ipv4->hdr_checksum = rte_ipv4_cksum(h.ipv4);
- phcsum = rte_ipv4_phdr_cksum(h.ipv4, 0);
- h.ipv4++;
- } else {
- h.ipv6->hop_limits = cqe->lro_min_ttl;
- h.ipv6->payload_len = rte_cpu_to_be_16(len - (h.hdr - padd) -
- sizeof(*h.ipv6));
- phcsum = rte_ipv6_phdr_cksum(h.ipv6, 0);
- h.ipv6++;
- }
- if (mcqe == NULL ||
- rxq->mcqe_format != MLX5_CQE_RESP_FORMAT_L34H_STRIDX)
- l4_type = (rte_be_to_cpu_16(cqe->hdr_type_etc) &
- MLX5_CQE_L4_TYPE_MASK) >> MLX5_CQE_L4_TYPE_SHIFT;
- else
- l4_type = (rte_be_to_cpu_16(mcqe->hdr_type) &
- MLX5_CQE_L4_TYPE_MASK) >> MLX5_CQE_L4_TYPE_SHIFT;
- mlx5_lro_update_tcp_hdr(h.tcp, cqe, phcsum, l4_type);
-}
-
-void
-mlx5_mprq_buf_free_cb(void *addr __rte_unused, void *opaque)
-{
- struct mlx5_mprq_buf *buf = opaque;
-
- if (__atomic_load_n(&buf->refcnt, __ATOMIC_RELAXED) == 1) {
- rte_mempool_put(buf->mp, buf);
- } else if (unlikely(__atomic_sub_fetch(&buf->refcnt, 1,
- __ATOMIC_RELAXED) == 0)) {
- __atomic_store_n(&buf->refcnt, 1, __ATOMIC_RELAXED);
- rte_mempool_put(buf->mp, buf);
- }
-}
-
-void
-mlx5_mprq_buf_free(struct mlx5_mprq_buf *buf)
-{
- mlx5_mprq_buf_free_cb(NULL, buf);
-}
-
-/**
- * DPDK callback for RX with Multi-Packet RQ support.
- *
- * @param dpdk_rxq
- * Generic pointer to RX queue structure.
- * @param[out] pkts
- * Array to store received packets.
- * @param pkts_n
- * Maximum number of packets in array.
- *
- * @return
- * Number of packets successfully received (<= pkts_n).
- */
-uint16_t
-mlx5_rx_burst_mprq(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n)
-{
- struct mlx5_rxq_data *rxq = dpdk_rxq;
- const uint32_t strd_n = 1 << rxq->strd_num_n;
- const uint32_t strd_sz = 1 << rxq->strd_sz_n;
- const uint32_t cq_mask = (1 << rxq->cqe_n) - 1;
- const uint32_t wq_mask = (1 << rxq->elts_n) - 1;
- volatile struct mlx5_cqe *cqe = &(*rxq->cqes)[rxq->cq_ci & cq_mask];
- unsigned int i = 0;
- uint32_t rq_ci = rxq->rq_ci;
- uint16_t consumed_strd = rxq->consumed_strd;
- struct mlx5_mprq_buf *buf = (*rxq->mprq_bufs)[rq_ci & wq_mask];
-
- while (i < pkts_n) {
- struct rte_mbuf *pkt;
- int ret;
- uint32_t len;
- uint16_t strd_cnt;
- uint16_t strd_idx;
- uint32_t byte_cnt;
- volatile struct mlx5_mini_cqe8 *mcqe = NULL;
- enum mlx5_rqx_code rxq_code;
-
- if (consumed_strd == strd_n) {
- /* Replace WQE if the buffer is still in use. */
- mprq_buf_replace(rxq, rq_ci & wq_mask);
- /* Advance to the next WQE. */
- consumed_strd = 0;
- ++rq_ci;
- buf = (*rxq->mprq_bufs)[rq_ci & wq_mask];
- }
- cqe = &(*rxq->cqes)[rxq->cq_ci & cq_mask];
- ret = mlx5_rx_poll_len(rxq, cqe, cq_mask, &mcqe);
- if (!ret)
- break;
- byte_cnt = ret;
- len = (byte_cnt & MLX5_MPRQ_LEN_MASK) >> MLX5_MPRQ_LEN_SHIFT;
- MLX5_ASSERT((int)len >= (rxq->crc_present << 2));
- if (rxq->crc_present)
- len -= RTE_ETHER_CRC_LEN;
- if (mcqe &&
- rxq->mcqe_format == MLX5_CQE_RESP_FORMAT_FTAG_STRIDX)
- strd_cnt = (len / strd_sz) + !!(len % strd_sz);
- else
- strd_cnt = (byte_cnt & MLX5_MPRQ_STRIDE_NUM_MASK) >>
- MLX5_MPRQ_STRIDE_NUM_SHIFT;
- MLX5_ASSERT(strd_cnt);
- consumed_strd += strd_cnt;
- if (byte_cnt & MLX5_MPRQ_FILLER_MASK)
- continue;
- strd_idx = rte_be_to_cpu_16(mcqe == NULL ?
- cqe->wqe_counter :
- mcqe->stride_idx);
- MLX5_ASSERT(strd_idx < strd_n);
- MLX5_ASSERT(!((rte_be_to_cpu_16(cqe->wqe_id) ^ rq_ci) &
- wq_mask));
- pkt = rte_pktmbuf_alloc(rxq->mp);
- if (unlikely(pkt == NULL)) {
- ++rxq->stats.rx_nombuf;
- break;
- }
- len = (byte_cnt & MLX5_MPRQ_LEN_MASK) >> MLX5_MPRQ_LEN_SHIFT;
- MLX5_ASSERT((int)len >= (rxq->crc_present << 2));
- if (rxq->crc_present)
- len -= RTE_ETHER_CRC_LEN;
- rxq_code = mprq_buf_to_pkt(rxq, pkt, len, buf,
- strd_idx, strd_cnt);
- if (unlikely(rxq_code != MLX5_RXQ_CODE_EXIT)) {
- rte_pktmbuf_free_seg(pkt);
- if (rxq_code == MLX5_RXQ_CODE_DROPPED) {
- ++rxq->stats.idropped;
- continue;
- }
- if (rxq_code == MLX5_RXQ_CODE_NOMBUF) {
- ++rxq->stats.rx_nombuf;
- break;
- }
- }
- rxq_cq_to_mbuf(rxq, pkt, cqe, mcqe);
- if (cqe->lro_num_seg > 1) {
- mlx5_lro_update_hdr(rte_pktmbuf_mtod(pkt, uint8_t *),
- cqe, mcqe, rxq, len);
- pkt->ol_flags |= PKT_RX_LRO;
- pkt->tso_segsz = len / cqe->lro_num_seg;
- }
- PKT_LEN(pkt) = len;
- PORT(pkt) = rxq->port_id;
-#ifdef MLX5_PMD_SOFT_COUNTERS
- /* Increment bytes counter. */
- rxq->stats.ibytes += PKT_LEN(pkt);
-#endif
- /* Return packet. */
- *(pkts++) = pkt;
- ++i;
- }
- /* Update the consumer indexes. */
- rxq->consumed_strd = consumed_strd;
- rte_io_wmb();
- *rxq->cq_db = rte_cpu_to_be_32(rxq->cq_ci);
- if (rq_ci != rxq->rq_ci) {
- rxq->rq_ci = rq_ci;
- rte_io_wmb();
- *rxq->rq_db = rte_cpu_to_be_32(rxq->rq_ci);
- }
-#ifdef MLX5_PMD_SOFT_COUNTERS
- /* Increment packets counter. */
- rxq->stats.ipackets += i;
-#endif
- return i;
-}
-
/**
* Dummy DPDK callback for TX.
*
return 0;
}
-/**
- * Dummy DPDK callback for RX.
- *
- * This function is used to temporarily replace the real callback during
- * unsafe control operations on the queue, or in case of error.
- *
- * @param dpdk_rxq
- * Generic pointer to RX queue structure.
- * @param[out] pkts
- * Array to store received packets.
- * @param pkts_n
- * Maximum number of packets in array.
- *
- * @return
- * Number of packets successfully received (<= pkts_n).
- */
-uint16_t
-removed_rx_burst(void *dpdk_txq __rte_unused,
- struct rte_mbuf **pkts __rte_unused,
- uint16_t pkts_n __rte_unused)
-{
- rte_mb();
- return 0;
-}
-
-/*
- * Vectorized Rx/Tx routines are not compiled in when required vector
- * instructions are not supported on a target architecture. The following null
- * stubs are needed for linkage when those are not included outside of this file
- * (e.g. mlx5_rxtx_vec_sse.c for x86).
- */
-
-__rte_weak uint16_t
-mlx5_rx_burst_vec(void *dpdk_txq __rte_unused,
- struct rte_mbuf **pkts __rte_unused,
- uint16_t pkts_n __rte_unused)
-{
- return 0;
-}
-
-__rte_weak uint16_t
-mlx5_rx_burst_mprq_vec(void *dpdk_txq __rte_unused,
- struct rte_mbuf **pkts __rte_unused,
- uint16_t pkts_n __rte_unused)
-{
- return 0;
-}
-
-__rte_weak int
-mlx5_rxq_check_vec_support(struct mlx5_rxq_data *rxq __rte_unused)
-{
- return -ENOTSUP;
-}
-
-__rte_weak int
-mlx5_check_vec_rx_support(struct rte_eth_dev *dev __rte_unused)
-{
- return -ENOTSUP;
-}
-
/**
* Free the mbufs from the linear array of pointers.
*
const void *buf, unsigned int len);
int mlx5_queue_state_modify_primary(struct rte_eth_dev *dev,
const struct mlx5_mp_arg_queue_state_modify *sm);
+int mlx5_queue_state_modify(struct rte_eth_dev *dev,
+ struct mlx5_mp_arg_queue_state_modify *sm);
void mlx5_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
struct rte_eth_txq_info *qinfo);
int mlx5_tx_burst_mode_get(struct rte_eth_dev *dev, uint16_t tx_queue_id,
git.droids-corp.org / dpdk.git / commitdiff