X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fmlx5%2Fmlx5_rxq.c;h=35c5cb42e951411bfbea1c9e3dadbe082b906c5f;hb=6096a4603d6f6ed752e3b4147406f3720318b0e5;hp=55d002ee9d5af2f181c7b3b3fb7f7978483aebf3;hpb=e16820236d358c84fa15acd960b82e7caaa2b2b1;p=dpdk.git diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c index 55d002ee9d..35c5cb42e9 100644 --- a/drivers/net/mlx5/mlx5_rxq.c +++ b/drivers/net/mlx5/mlx5_rxq.c @@ -36,28 +36,26 @@ #include #include #include +#include /* Verbs header. */ /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */ #ifdef PEDANTIC -#pragma GCC diagnostic ignored "-pedantic" +#pragma GCC diagnostic ignored "-Wpedantic" #endif #include +#include +#include #ifdef PEDANTIC -#pragma GCC diagnostic error "-pedantic" +#pragma GCC diagnostic error "-Wpedantic" #endif -/* DPDK headers don't like -pedantic. */ -#ifdef PEDANTIC -#pragma GCC diagnostic ignored "-pedantic" -#endif #include #include #include #include -#ifdef PEDANTIC -#pragma GCC diagnostic error "-pedantic" -#endif +#include +#include #include "mlx5.h" #include "mlx5_rxtx.h" @@ -105,7 +103,6 @@ const struct hash_rxq_init hash_rxq_init[] = { }, .underlayer = &hash_rxq_init[HASH_RXQ_ETH], }, -#ifdef HAVE_FLOW_SPEC_IPV6 [HASH_RXQ_TCPV6] = { .hash_fields = (IBV_EXP_RX_HASH_SRC_IPV6 | IBV_EXP_RX_HASH_DST_IPV6 | @@ -144,7 +141,6 @@ const struct hash_rxq_init hash_rxq_init[] = { }, .underlayer = &hash_rxq_init[HASH_RXQ_ETH], }, -#endif /* HAVE_FLOW_SPEC_IPV6 */ [HASH_RXQ_ETH] = { .hash_fields = 0, .dpdk_rss_hf = 0, @@ -168,17 +164,11 @@ static const struct ind_table_init ind_table_init[] = { 1 << HASH_RXQ_TCPV4 | 1 << HASH_RXQ_UDPV4 | 1 << HASH_RXQ_IPV4 | -#ifdef HAVE_FLOW_SPEC_IPV6 1 << HASH_RXQ_TCPV6 | 1 << HASH_RXQ_UDPV6 | 1 << HASH_RXQ_IPV6 | -#endif /* HAVE_FLOW_SPEC_IPV6 */ 0, -#ifdef HAVE_FLOW_SPEC_IPV6 .hash_types_n = 6, -#else /* HAVE_FLOW_SPEC_IPV6 */ - .hash_types_n = 3, -#endif /* HAVE_FLOW_SPEC_IPV6 */ }, { .max_size = 1, @@ -243,12 +233,8 @@ priv_flow_attr(struct priv *priv, struct ibv_exp_flow_attr *flow_attr, init = &hash_rxq_init[type]; *flow_attr = (struct ibv_exp_flow_attr){ .type = IBV_EXP_FLOW_ATTR_NORMAL, -#ifdef MLX5_FDIR_SUPPORT /* Priorities < 3 are reserved for flow director. */ .priority = init->flow_priority + 3, -#else /* MLX5_FDIR_SUPPORT */ - .priority = init->flow_priority, -#endif /* MLX5_FDIR_SUPPORT */ .num_of_specs = 0, .port = priv->port, .flags = 0, @@ -279,7 +265,7 @@ priv_flow_attr(struct priv *priv, struct ibv_exp_flow_attr *flow_attr, static enum hash_rxq_type hash_rxq_type_from_pos(const struct ind_table_init *table, unsigned int pos) { - enum hash_rxq_type type = 0; + enum hash_rxq_type type = HASH_RXQ_TCPV4; assert(pos < table->hash_types_n); do { @@ -312,7 +298,7 @@ priv_make_ind_table_init(struct priv *priv, /* Mandatory to receive frames not handled by normal hash RX queues. */ unsigned int hash_types_sup = 1 << HASH_RXQ_ETH; - rss_hf = priv->dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf; + rss_hf = priv->rss_hf; /* Process other protocols only if more than one queue. */ if (priv->rxqs_n > 1) for (i = 0; (i != hash_rxq_init_n); ++i) @@ -370,6 +356,8 @@ priv_create_hash_rxqs(struct priv *priv) assert(priv->hash_rxqs_n == 0); assert(priv->pd != NULL); assert(priv->ctx != NULL); + if (priv->isolated) + return 0; if (priv->rxqs_n == 0) return EINVAL; assert(priv->rxqs != NULL); @@ -385,8 +373,13 @@ priv_create_hash_rxqs(struct priv *priv) DEBUG("indirection table extended to assume %u WQs", priv->reta_idx_n); } - for (i = 0; (i != priv->reta_idx_n); ++i) - wqs[i] = (*priv->rxqs)[(*priv->reta_idx)[i]]->wq; + for (i = 0; (i != priv->reta_idx_n); ++i) { + struct rxq_ctrl *rxq_ctrl; + + rxq_ctrl = container_of((*priv->rxqs)[(*priv->reta_idx)[i]], + struct rxq_ctrl, rxq); + wqs[i] = rxq_ctrl->wq; + } /* Get number of hash RX queues to configure. */ for (i = 0, hash_rxqs_n = 0; (i != ind_tables_n); ++i) hash_rxqs_n += ind_table_init[i].hash_types_n; @@ -541,7 +534,10 @@ priv_destroy_hash_rxqs(struct priv *priv) assert(hash_rxq->qp != NULL); /* Also check that there are no remaining flows. */ for (j = 0; (j != RTE_DIM(hash_rxq->special_flow)); ++j) - assert(hash_rxq->special_flow[j] == NULL); + for (k = 0; + (k != RTE_DIM(hash_rxq->special_flow[j])); + ++k) + assert(hash_rxq->special_flow[j][k] == NULL); for (j = 0; (j != RTE_DIM(hash_rxq->mac_flow)); ++j) for (k = 0; (k != RTE_DIM(hash_rxq->mac_flow[j])); ++k) assert(hash_rxq->mac_flow[j][k] == NULL); @@ -586,9 +582,7 @@ priv_allow_flow_type(struct priv *priv, enum hash_rxq_flow_type type) case HASH_RXQ_FLOW_TYPE_ALLMULTI: return !!priv->allmulti_req; case HASH_RXQ_FLOW_TYPE_BROADCAST: -#ifdef HAVE_FLOW_SPEC_IPV6 case HASH_RXQ_FLOW_TYPE_IPV6MULTI: -#endif /* HAVE_FLOW_SPEC_IPV6 */ /* If allmulti is enabled, broadcast and ipv6multi * are unnecessary. */ return !priv->allmulti_req; @@ -613,9 +607,11 @@ priv_allow_flow_type(struct priv *priv, enum hash_rxq_flow_type type) int priv_rehash_flows(struct priv *priv) { - unsigned int i; + enum hash_rxq_flow_type i; - for (i = 0; (i != RTE_DIM((*priv->hash_rxqs)[0].special_flow)); ++i) + for (i = HASH_RXQ_FLOW_TYPE_PROMISC; + i != RTE_DIM((*priv->hash_rxqs)[0].special_flow); + ++i) if (!priv_allow_flow_type(priv, i)) { priv_special_flow_disable(priv, i); } else { @@ -630,227 +626,90 @@ priv_rehash_flows(struct priv *priv) return 0; } -/** - * Allocate RX queue elements with scattered packets support. - * - * @param rxq - * Pointer to RX queue structure. - * @param elts_n - * Number of elements to allocate. - * @param[in] pool - * If not NULL, fetch buffers from this array instead of allocating them - * with rte_pktmbuf_alloc(). - * - * @return - * 0 on success, errno value on failure. - */ -static int -rxq_alloc_elts_sp(struct rxq *rxq, unsigned int elts_n, - struct rte_mbuf **pool) -{ - unsigned int i; - struct rxq_elt_sp (*elts)[elts_n] = - rte_calloc_socket("RXQ elements", 1, sizeof(*elts), 0, - rxq->socket); - int ret = 0; - - if (elts == NULL) { - ERROR("%p: can't allocate packets array", (void *)rxq); - ret = ENOMEM; - goto error; - } - /* For each WR (packet). */ - for (i = 0; (i != elts_n); ++i) { - unsigned int j; - struct rxq_elt_sp *elt = &(*elts)[i]; - struct ibv_sge (*sges)[RTE_DIM(elt->sges)] = &elt->sges; - - /* These two arrays must have the same size. */ - assert(RTE_DIM(elt->sges) == RTE_DIM(elt->bufs)); - /* For each SGE (segment). */ - for (j = 0; (j != RTE_DIM(elt->bufs)); ++j) { - struct ibv_sge *sge = &(*sges)[j]; - struct rte_mbuf *buf; - - if (pool != NULL) { - buf = *(pool++); - assert(buf != NULL); - rte_pktmbuf_reset(buf); - } else - buf = rte_pktmbuf_alloc(rxq->mp); - if (buf == NULL) { - assert(pool == NULL); - ERROR("%p: empty mbuf pool", (void *)rxq); - ret = ENOMEM; - goto error; - } - elt->bufs[j] = buf; - /* Headroom is reserved by rte_pktmbuf_alloc(). */ - assert(DATA_OFF(buf) == RTE_PKTMBUF_HEADROOM); - /* Buffer is supposed to be empty. */ - assert(rte_pktmbuf_data_len(buf) == 0); - assert(rte_pktmbuf_pkt_len(buf) == 0); - /* sge->addr must be able to store a pointer. */ - assert(sizeof(sge->addr) >= sizeof(uintptr_t)); - if (j == 0) { - /* The first SGE keeps its headroom. */ - sge->addr = rte_pktmbuf_mtod(buf, uintptr_t); - sge->length = (buf->buf_len - - RTE_PKTMBUF_HEADROOM); - } else { - /* Subsequent SGEs lose theirs. */ - assert(DATA_OFF(buf) == RTE_PKTMBUF_HEADROOM); - SET_DATA_OFF(buf, 0); - sge->addr = (uintptr_t)buf->buf_addr; - sge->length = buf->buf_len; - } - sge->lkey = rxq->mr->lkey; - /* Redundant check for tailroom. */ - assert(sge->length == rte_pktmbuf_tailroom(buf)); - } - } - DEBUG("%p: allocated and configured %u WRs (%zu segments)", - (void *)rxq, elts_n, (elts_n * RTE_DIM((*elts)[0].sges))); - rxq->elts_n = elts_n; - rxq->elts_head = 0; - rxq->elts.sp = elts; - assert(ret == 0); - return 0; -error: - if (elts != NULL) { - assert(pool == NULL); - for (i = 0; (i != RTE_DIM(*elts)); ++i) { - unsigned int j; - struct rxq_elt_sp *elt = &(*elts)[i]; - - for (j = 0; (j != RTE_DIM(elt->bufs)); ++j) { - struct rte_mbuf *buf = elt->bufs[j]; - - if (buf != NULL) - rte_pktmbuf_free_seg(buf); - } - } - rte_free(elts); - } - DEBUG("%p: failed, freed everything", (void *)rxq); - assert(ret > 0); - return ret; -} - -/** - * Free RX queue elements with scattered packets support. - * - * @param rxq - * Pointer to RX queue structure. - */ -static void -rxq_free_elts_sp(struct rxq *rxq) -{ - unsigned int i; - unsigned int elts_n = rxq->elts_n; - struct rxq_elt_sp (*elts)[elts_n] = rxq->elts.sp; - - DEBUG("%p: freeing WRs", (void *)rxq); - rxq->elts_n = 0; - rxq->elts.sp = NULL; - if (elts == NULL) - return; - for (i = 0; (i != RTE_DIM(*elts)); ++i) { - unsigned int j; - struct rxq_elt_sp *elt = &(*elts)[i]; - - for (j = 0; (j != RTE_DIM(elt->bufs)); ++j) { - struct rte_mbuf *buf = elt->bufs[j]; - - if (buf != NULL) - rte_pktmbuf_free_seg(buf); - } - } - rte_free(elts); -} - /** * Allocate RX queue elements. * - * @param rxq + * @param rxq_ctrl * Pointer to RX queue structure. * @param elts_n * Number of elements to allocate. - * @param[in] pool - * If not NULL, fetch buffers from this array instead of allocating them - * with rte_pktmbuf_alloc(). * * @return * 0 on success, errno value on failure. */ static int -rxq_alloc_elts(struct rxq *rxq, unsigned int elts_n, struct rte_mbuf **pool) +rxq_alloc_elts(struct rxq_ctrl *rxq_ctrl, unsigned int elts_n) { + const unsigned int sges_n = 1 << rxq_ctrl->rxq.sges_n; unsigned int i; - struct rxq_elt (*elts)[elts_n] = - rte_calloc_socket("RXQ elements", 1, sizeof(*elts), 0, - rxq->socket); int ret = 0; - if (elts == NULL) { - ERROR("%p: can't allocate packets array", (void *)rxq); - ret = ENOMEM; - goto error; - } - /* For each WR (packet). */ + /* Iterate on segments. */ for (i = 0; (i != elts_n); ++i) { - struct rxq_elt *elt = &(*elts)[i]; - struct ibv_sge *sge = &(*elts)[i].sge; struct rte_mbuf *buf; + volatile struct mlx5_wqe_data_seg *scat = + &(*rxq_ctrl->rxq.wqes)[i]; - if (pool != NULL) { - buf = *(pool++); - assert(buf != NULL); - rte_pktmbuf_reset(buf); - } else - buf = rte_pktmbuf_alloc(rxq->mp); + buf = rte_pktmbuf_alloc(rxq_ctrl->rxq.mp); if (buf == NULL) { - assert(pool == NULL); - ERROR("%p: empty mbuf pool", (void *)rxq); + ERROR("%p: empty mbuf pool", (void *)rxq_ctrl); ret = ENOMEM; goto error; } - elt->buf = buf; /* Headroom is reserved by rte_pktmbuf_alloc(). */ assert(DATA_OFF(buf) == RTE_PKTMBUF_HEADROOM); /* Buffer is supposed to be empty. */ assert(rte_pktmbuf_data_len(buf) == 0); assert(rte_pktmbuf_pkt_len(buf) == 0); - /* sge->addr must be able to store a pointer. */ - assert(sizeof(sge->addr) >= sizeof(uintptr_t)); - /* SGE keeps its headroom. */ - sge->addr = (uintptr_t) - ((uint8_t *)buf->buf_addr + RTE_PKTMBUF_HEADROOM); - sge->length = (buf->buf_len - RTE_PKTMBUF_HEADROOM); - sge->lkey = rxq->mr->lkey; - /* Redundant check for tailroom. */ - assert(sge->length == rte_pktmbuf_tailroom(buf)); + assert(!buf->next); + /* Only the first segment keeps headroom. */ + if (i % sges_n) + SET_DATA_OFF(buf, 0); + PORT(buf) = rxq_ctrl->rxq.port_id; + DATA_LEN(buf) = rte_pktmbuf_tailroom(buf); + PKT_LEN(buf) = DATA_LEN(buf); + NB_SEGS(buf) = 1; + /* scat->addr must be able to store a pointer. */ + assert(sizeof(scat->addr) >= sizeof(uintptr_t)); + *scat = (struct mlx5_wqe_data_seg){ + .addr = htonll(rte_pktmbuf_mtod(buf, uintptr_t)), + .byte_count = htonl(DATA_LEN(buf)), + .lkey = htonl(rxq_ctrl->mr->lkey), + }; + (*rxq_ctrl->rxq.elts)[i] = buf; + } + if (rxq_check_vec_support(&rxq_ctrl->rxq) > 0) { + struct rxq *rxq = &rxq_ctrl->rxq; + struct rte_mbuf *mbuf_init = &rxq->fake_mbuf; + + assert(rxq->elts_n == rxq->cqe_n); + /* Initialize default rearm_data for vPMD. */ + mbuf_init->data_off = RTE_PKTMBUF_HEADROOM; + rte_mbuf_refcnt_set(mbuf_init, 1); + mbuf_init->nb_segs = 1; + mbuf_init->port = rxq->port_id; + /* + * prevent compiler reordering: + * rearm_data covers previous fields. + */ + rte_compiler_barrier(); + rxq->mbuf_initializer = *(uint64_t *)&mbuf_init->rearm_data; + /* Padding with a fake mbuf for vectorized Rx. */ + for (i = 0; i < MLX5_VPMD_DESCS_PER_LOOP; ++i) + (*rxq->elts)[elts_n + i] = &rxq->fake_mbuf; } - DEBUG("%p: allocated and configured %u single-segment WRs", - (void *)rxq, elts_n); - rxq->elts_n = elts_n; - rxq->elts_head = 0; - rxq->elts.no_sp = elts; + DEBUG("%p: allocated and configured %u segments (max %u packets)", + (void *)rxq_ctrl, elts_n, elts_n / (1 << rxq_ctrl->rxq.sges_n)); assert(ret == 0); return 0; error: - if (elts != NULL) { - assert(pool == NULL); - for (i = 0; (i != RTE_DIM(*elts)); ++i) { - struct rxq_elt *elt = &(*elts)[i]; - struct rte_mbuf *buf = elt->buf; - - if (buf != NULL) - rte_pktmbuf_free_seg(buf); - } - rte_free(elts); + elts_n = i; + for (i = 0; (i != elts_n); ++i) { + if ((*rxq_ctrl->rxq.elts)[i] != NULL) + rte_pktmbuf_free_seg((*rxq_ctrl->rxq.elts)[i]); + (*rxq_ctrl->rxq.elts)[i] = NULL; } - DEBUG("%p: failed, freed everything", (void *)rxq); + DEBUG("%p: failed, freed everything", (void *)rxq_ctrl); assert(ret > 0); return ret; } @@ -858,29 +717,35 @@ error: /** * Free RX queue elements. * - * @param rxq + * @param rxq_ctrl * Pointer to RX queue structure. */ static void -rxq_free_elts(struct rxq *rxq) +rxq_free_elts(struct rxq_ctrl *rxq_ctrl) { - unsigned int i; - unsigned int elts_n = rxq->elts_n; - struct rxq_elt (*elts)[elts_n] = rxq->elts.no_sp; - - DEBUG("%p: freeing WRs", (void *)rxq); - rxq->elts_n = 0; - rxq->elts.no_sp = NULL; - if (elts == NULL) + struct rxq *rxq = &rxq_ctrl->rxq; + const uint16_t q_n = (1 << rxq->elts_n); + const uint16_t q_mask = q_n - 1; + uint16_t used = q_n - (rxq->rq_ci - rxq->rq_pi); + uint16_t i; + + DEBUG("%p: freeing WRs", (void *)rxq_ctrl); + if (rxq->elts == NULL) return; - for (i = 0; (i != RTE_DIM(*elts)); ++i) { - struct rxq_elt *elt = &(*elts)[i]; - struct rte_mbuf *buf = elt->buf; - - if (buf != NULL) - rte_pktmbuf_free_seg(buf); + /** + * Some mbuf in the Ring belongs to the application. They cannot be + * freed. + */ + if (rxq_check_vec_support(rxq) > 0) { + for (i = 0; i < used; ++i) + (*rxq->elts)[(rxq->rq_ci + i) & q_mask] = NULL; + rxq->rq_pi = rxq->rq_ci; + } + for (i = 0; (i != (1u << rxq->elts_n)); ++i) { + if ((*rxq->elts)[i] != NULL) + rte_pktmbuf_free_seg((*rxq->elts)[i]); + (*rxq->elts)[i] = NULL; } - rte_free(elts); } /** @@ -888,231 +753,72 @@ rxq_free_elts(struct rxq *rxq) * * Destroy objects, free allocated memory and reset the structure for reuse. * - * @param rxq + * @param rxq_ctrl * Pointer to RX queue structure. */ void -rxq_cleanup(struct rxq *rxq) +rxq_cleanup(struct rxq_ctrl *rxq_ctrl) { - struct ibv_exp_release_intf_params params; - - DEBUG("cleaning up %p", (void *)rxq); - if (rxq->sp) - rxq_free_elts_sp(rxq); - else - rxq_free_elts(rxq); - rxq->poll = NULL; - rxq->recv = NULL; - if (rxq->if_wq != NULL) { - assert(rxq->priv != NULL); - assert(rxq->priv->ctx != NULL); - assert(rxq->wq != NULL); - params = (struct ibv_exp_release_intf_params){ - .comp_mask = 0, - }; - claim_zero(ibv_exp_release_intf(rxq->priv->ctx, - rxq->if_wq, - ¶ms)); - } - if (rxq->if_cq != NULL) { - assert(rxq->priv != NULL); - assert(rxq->priv->ctx != NULL); - assert(rxq->cq != NULL); - params = (struct ibv_exp_release_intf_params){ - .comp_mask = 0, - }; - claim_zero(ibv_exp_release_intf(rxq->priv->ctx, - rxq->if_cq, - ¶ms)); - } - if (rxq->wq != NULL) - claim_zero(ibv_exp_destroy_wq(rxq->wq)); - if (rxq->cq != NULL) - claim_zero(ibv_destroy_cq(rxq->cq)); - if (rxq->rd != NULL) { - struct ibv_exp_destroy_res_domain_attr attr = { - .comp_mask = 0, - }; - - assert(rxq->priv != NULL); - assert(rxq->priv->ctx != NULL); - claim_zero(ibv_exp_destroy_res_domain(rxq->priv->ctx, - rxq->rd, - &attr)); - } - if (rxq->mr != NULL) - claim_zero(ibv_dereg_mr(rxq->mr)); - memset(rxq, 0, sizeof(*rxq)); + DEBUG("cleaning up %p", (void *)rxq_ctrl); + rxq_free_elts(rxq_ctrl); + if (rxq_ctrl->fdir_queue != NULL) + priv_fdir_queue_destroy(rxq_ctrl->priv, rxq_ctrl->fdir_queue); + if (rxq_ctrl->wq != NULL) + claim_zero(ibv_exp_destroy_wq(rxq_ctrl->wq)); + if (rxq_ctrl->cq != NULL) + claim_zero(ibv_destroy_cq(rxq_ctrl->cq)); + if (rxq_ctrl->channel != NULL) + claim_zero(ibv_destroy_comp_channel(rxq_ctrl->channel)); + if (rxq_ctrl->mr != NULL) + claim_zero(ibv_dereg_mr(rxq_ctrl->mr)); + memset(rxq_ctrl, 0, sizeof(*rxq_ctrl)); } /** - * Reconfigure a RX queue with new parameters. + * Initialize RX queue. * - * rxq_rehash() does not allocate mbufs, which, if not done from the right - * thread (such as a control thread), may corrupt the pool. - * In case of failure, the queue is left untouched. - * - * @param dev - * Pointer to Ethernet device structure. - * @param rxq - * RX queue pointer. + * @param tmpl + * Pointer to RX queue control template. * * @return * 0 on success, errno value on failure. */ -int -rxq_rehash(struct rte_eth_dev *dev, struct rxq *rxq) +static inline int +rxq_setup(struct rxq_ctrl *tmpl) { - struct priv *priv = rxq->priv; - struct rxq tmpl = *rxq; - unsigned int mbuf_n; - unsigned int desc_n; - struct rte_mbuf **pool; - unsigned int i, k; - struct ibv_exp_wq_attr mod; - int err; - - DEBUG("%p: rehashing queue %p", (void *)dev, (void *)rxq); - /* Number of descriptors and mbufs currently allocated. */ - desc_n = (tmpl.elts_n * (tmpl.sp ? MLX5_PMD_SGE_WR_N : 1)); - mbuf_n = desc_n; - /* Toggle RX checksum offload if hardware supports it. */ - if (priv->hw_csum) { - tmpl.csum = !!dev->data->dev_conf.rxmode.hw_ip_checksum; - rxq->csum = tmpl.csum; - } - if (priv->hw_csum_l2tun) { - tmpl.csum_l2tun = !!dev->data->dev_conf.rxmode.hw_ip_checksum; - rxq->csum_l2tun = tmpl.csum_l2tun; - } - /* Enable scattered packets support for this queue if necessary. */ - if ((dev->data->dev_conf.rxmode.jumbo_frame) && - (dev->data->dev_conf.rxmode.max_rx_pkt_len > - (tmpl.mb_len - RTE_PKTMBUF_HEADROOM))) { - tmpl.sp = 1; - desc_n /= MLX5_PMD_SGE_WR_N; - } else - tmpl.sp = 0; - DEBUG("%p: %s scattered packets support (%u WRs)", - (void *)dev, (tmpl.sp ? "enabling" : "disabling"), desc_n); - /* If scatter mode is the same as before, nothing to do. */ - if (tmpl.sp == rxq->sp) { - DEBUG("%p: nothing to do", (void *)dev); - return 0; + struct ibv_cq *ibcq = tmpl->cq; + struct ibv_mlx5_cq_info cq_info; + struct mlx5_rwq *rwq = container_of(tmpl->wq, struct mlx5_rwq, wq); + const uint16_t desc_n = + (1 << tmpl->rxq.elts_n) + tmpl->priv->rx_vec_en * + MLX5_VPMD_DESCS_PER_LOOP; + struct rte_mbuf *(*elts)[desc_n] = + rte_calloc_socket("RXQ", 1, sizeof(*elts), 0, tmpl->socket); + if (ibv_mlx5_exp_get_cq_info(ibcq, &cq_info)) { + ERROR("Unable to query CQ info. check your OFED."); + return ENOTSUP; } - /* From now on, any failure will render the queue unusable. - * Reinitialize WQ. */ - mod = (struct ibv_exp_wq_attr){ - .attr_mask = IBV_EXP_WQ_ATTR_STATE, - .wq_state = IBV_EXP_WQS_RESET, - }; - err = ibv_exp_modify_wq(tmpl.wq, &mod); - if (err) { - ERROR("%p: cannot reset WQ: %s", (void *)dev, strerror(err)); - assert(err > 0); - return err; - } - /* Allocate pool. */ - pool = rte_malloc(__func__, (mbuf_n * sizeof(*pool)), 0); - if (pool == NULL) { - ERROR("%p: cannot allocate memory", (void *)dev); - return ENOBUFS; - } - /* Snatch mbufs from original queue. */ - k = 0; - if (rxq->sp) { - struct rxq_elt_sp (*elts)[rxq->elts_n] = rxq->elts.sp; - - for (i = 0; (i != RTE_DIM(*elts)); ++i) { - struct rxq_elt_sp *elt = &(*elts)[i]; - unsigned int j; - - for (j = 0; (j != RTE_DIM(elt->bufs)); ++j) { - assert(elt->bufs[j] != NULL); - pool[k++] = elt->bufs[j]; - } - } - } else { - struct rxq_elt (*elts)[rxq->elts_n] = rxq->elts.no_sp; - - for (i = 0; (i != RTE_DIM(*elts)); ++i) { - struct rxq_elt *elt = &(*elts)[i]; - struct rte_mbuf *buf = elt->buf; - - pool[k++] = buf; - } - } - assert(k == mbuf_n); - tmpl.elts_n = 0; - tmpl.elts.sp = NULL; - assert((void *)&tmpl.elts.sp == (void *)&tmpl.elts.no_sp); - err = ((tmpl.sp) ? - rxq_alloc_elts_sp(&tmpl, desc_n, pool) : - rxq_alloc_elts(&tmpl, desc_n, pool)); - if (err) { - ERROR("%p: cannot reallocate WRs, aborting", (void *)dev); - rte_free(pool); - assert(err > 0); - return err; - } - assert(tmpl.elts_n == desc_n); - assert(tmpl.elts.sp != NULL); - rte_free(pool); - /* Clean up original data. */ - rxq->elts_n = 0; - rte_free(rxq->elts.sp); - rxq->elts.sp = NULL; - /* Change queue state to ready. */ - mod = (struct ibv_exp_wq_attr){ - .attr_mask = IBV_EXP_WQ_ATTR_STATE, - .wq_state = IBV_EXP_WQS_RDY, - }; - err = ibv_exp_modify_wq(tmpl.wq, &mod); - if (err) { - ERROR("%p: WQ state to IBV_EXP_WQS_RDY failed: %s", - (void *)dev, strerror(err)); - goto error; - } - /* Post SGEs. */ - assert(tmpl.if_wq != NULL); - if (tmpl.sp) { - struct rxq_elt_sp (*elts)[tmpl.elts_n] = tmpl.elts.sp; - - for (i = 0; (i != RTE_DIM(*elts)); ++i) { - err = tmpl.if_wq->recv_sg_list - (tmpl.wq, - (*elts)[i].sges, - RTE_DIM((*elts)[i].sges)); - if (err) - break; - } - } else { - struct rxq_elt (*elts)[tmpl.elts_n] = tmpl.elts.no_sp; - - for (i = 0; (i != RTE_DIM(*elts)); ++i) { - err = tmpl.if_wq->recv_burst( - tmpl.wq, - &(*elts)[i].sge, - 1); - if (err) - break; - } - } - if (err) { - ERROR("%p: failed to post SGEs with error %d", - (void *)dev, err); - /* Set err because it does not contain a valid errno value. */ - err = EIO; - goto error; + if (cq_info.cqe_size != RTE_CACHE_LINE_SIZE) { + ERROR("Wrong MLX5_CQE_SIZE environment variable value: " + "it should be set to %u", RTE_CACHE_LINE_SIZE); + return EINVAL; } - if (tmpl.sp) - tmpl.recv = tmpl.if_wq->recv_sg_list; - else - tmpl.recv = tmpl.if_wq->recv_burst; -error: - *rxq = tmpl; - assert(err >= 0); - return err; + if (elts == NULL) + return ENOMEM; + tmpl->rxq.rq_db = rwq->rq.db; + tmpl->rxq.cqe_n = log2above(cq_info.cqe_cnt); + tmpl->rxq.cq_ci = 0; + tmpl->rxq.rq_ci = 0; + tmpl->rxq.rq_pi = 0; + tmpl->rxq.cq_db = cq_info.dbrec; + tmpl->rxq.wqes = + (volatile struct mlx5_wqe_data_seg (*)[]) + (uintptr_t)rwq->rq.buff; + tmpl->rxq.cqes = + (volatile struct mlx5_cqe (*)[]) + (uintptr_t)cq_info.buf; + tmpl->rxq.elts = elts; + return 0; } /** @@ -1120,7 +826,7 @@ error: * * @param dev * Pointer to Ethernet device structure. - * @param rxq + * @param rxq_ctrl * Pointer to RX queue structure. * @param desc * Number of descriptors to configure in queue. @@ -1134,91 +840,119 @@ error: * @return * 0 on success, errno value on failure. */ -int -rxq_setup(struct rte_eth_dev *dev, struct rxq *rxq, uint16_t desc, - unsigned int socket, const struct rte_eth_rxconf *conf, - struct rte_mempool *mp) +static int +rxq_ctrl_setup(struct rte_eth_dev *dev, struct rxq_ctrl *rxq_ctrl, + uint16_t desc, unsigned int socket, + const struct rte_eth_rxconf *conf, struct rte_mempool *mp) { struct priv *priv = dev->data->dev_private; - struct rxq tmpl = { + struct rxq_ctrl tmpl = { .priv = priv, - .mp = mp, - .socket = socket + .socket = socket, + .rxq = { + .elts_n = log2above(desc), + .mp = mp, + .rss_hash = priv->rxqs_n > 1, + }, }; struct ibv_exp_wq_attr mod; union { - struct ibv_exp_query_intf_params params; struct ibv_exp_cq_init_attr cq; - struct ibv_exp_res_domain_init_attr rd; struct ibv_exp_wq_init_attr wq; + struct ibv_exp_cq_attr cq_attr; } attr; - enum ibv_exp_query_intf_status status; - struct rte_mbuf *buf; + unsigned int mb_len = rte_pktmbuf_data_room_size(mp); + unsigned int cqe_n = desc - 1; + const uint16_t desc_n = + desc + priv->rx_vec_en * MLX5_VPMD_DESCS_PER_LOOP; + struct rte_mbuf *(*elts)[desc_n] = NULL; int ret = 0; - unsigned int i; - unsigned int cq_size = desc; (void)conf; /* Thresholds configuration (ignored). */ - if ((desc == 0) || (desc % MLX5_PMD_SGE_WR_N)) { - ERROR("%p: invalid number of RX descriptors (must be a" - " multiple of %d)", (void *)dev, MLX5_PMD_SGE_WR_N); - return EINVAL; + /* Enable scattered packets support for this queue if necessary. */ + assert(mb_len >= RTE_PKTMBUF_HEADROOM); + if (dev->data->dev_conf.rxmode.max_rx_pkt_len <= + (mb_len - RTE_PKTMBUF_HEADROOM)) { + tmpl.rxq.sges_n = 0; + } else if (dev->data->dev_conf.rxmode.enable_scatter) { + unsigned int size = + RTE_PKTMBUF_HEADROOM + + dev->data->dev_conf.rxmode.max_rx_pkt_len; + unsigned int sges_n; + + /* + * Determine the number of SGEs needed for a full packet + * and round it to the next power of two. + */ + sges_n = log2above((size / mb_len) + !!(size % mb_len)); + tmpl.rxq.sges_n = sges_n; + /* Make sure rxq.sges_n did not overflow. */ + size = mb_len * (1 << tmpl.rxq.sges_n); + size -= RTE_PKTMBUF_HEADROOM; + if (size < dev->data->dev_conf.rxmode.max_rx_pkt_len) { + ERROR("%p: too many SGEs (%u) needed to handle" + " requested maximum packet size %u", + (void *)dev, + 1 << sges_n, + dev->data->dev_conf.rxmode.max_rx_pkt_len); + return EOVERFLOW; + } + } else { + WARN("%p: the requested maximum Rx packet size (%u) is" + " larger than a single mbuf (%u) and scattered" + " mode has not been requested", + (void *)dev, + dev->data->dev_conf.rxmode.max_rx_pkt_len, + mb_len - RTE_PKTMBUF_HEADROOM); } - /* Get mbuf length. */ - buf = rte_pktmbuf_alloc(mp); - if (buf == NULL) { - ERROR("%p: unable to allocate mbuf", (void *)dev); - return ENOMEM; + DEBUG("%p: maximum number of segments per packet: %u", + (void *)dev, 1 << tmpl.rxq.sges_n); + if (desc % (1 << tmpl.rxq.sges_n)) { + ERROR("%p: number of RX queue descriptors (%u) is not a" + " multiple of SGEs per packet (%u)", + (void *)dev, + desc, + 1 << tmpl.rxq.sges_n); + return EINVAL; } - tmpl.mb_len = buf->buf_len; - assert((rte_pktmbuf_headroom(buf) + - rte_pktmbuf_tailroom(buf)) == tmpl.mb_len); - assert(rte_pktmbuf_headroom(buf) == RTE_PKTMBUF_HEADROOM); - rte_pktmbuf_free(buf); /* Toggle RX checksum offload if hardware supports it. */ if (priv->hw_csum) - tmpl.csum = !!dev->data->dev_conf.rxmode.hw_ip_checksum; + tmpl.rxq.csum = !!dev->data->dev_conf.rxmode.hw_ip_checksum; if (priv->hw_csum_l2tun) - tmpl.csum_l2tun = !!dev->data->dev_conf.rxmode.hw_ip_checksum; - /* Enable scattered packets support for this queue if necessary. */ - if ((dev->data->dev_conf.rxmode.jumbo_frame) && - (dev->data->dev_conf.rxmode.max_rx_pkt_len > - (tmpl.mb_len - RTE_PKTMBUF_HEADROOM))) { - tmpl.sp = 1; - desc /= MLX5_PMD_SGE_WR_N; - } - DEBUG("%p: %s scattered packets support (%u WRs)", - (void *)dev, (tmpl.sp ? "enabling" : "disabling"), desc); + tmpl.rxq.csum_l2tun = + !!dev->data->dev_conf.rxmode.hw_ip_checksum; /* Use the entire RX mempool as the memory region. */ - tmpl.mr = ibv_reg_mr(priv->pd, - (void *)mp->elt_va_start, - (mp->elt_va_end - mp->elt_va_start), - (IBV_ACCESS_LOCAL_WRITE | - IBV_ACCESS_REMOTE_WRITE)); + tmpl.mr = mlx5_mp2mr(priv->pd, mp); if (tmpl.mr == NULL) { ret = EINVAL; ERROR("%p: MR creation failure: %s", (void *)dev, strerror(ret)); goto error; } - attr.rd = (struct ibv_exp_res_domain_init_attr){ - .comp_mask = (IBV_EXP_RES_DOMAIN_THREAD_MODEL | - IBV_EXP_RES_DOMAIN_MSG_MODEL), - .thread_model = IBV_EXP_THREAD_SINGLE, - .msg_model = IBV_EXP_MSG_HIGH_BW, - }; - tmpl.rd = ibv_exp_create_res_domain(priv->ctx, &attr.rd); - if (tmpl.rd == NULL) { - ret = ENOMEM; - ERROR("%p: RD creation failure: %s", - (void *)dev, strerror(ret)); - goto error; + if (dev->data->dev_conf.intr_conf.rxq) { + tmpl.channel = ibv_create_comp_channel(priv->ctx); + if (tmpl.channel == NULL) { + ret = ENOMEM; + ERROR("%p: Rx interrupt completion channel creation" + " failure: %s", + (void *)dev, strerror(ret)); + goto error; + } } attr.cq = (struct ibv_exp_cq_init_attr){ - .comp_mask = IBV_EXP_CQ_INIT_ATTR_RES_DOMAIN, - .res_domain = tmpl.rd, + .comp_mask = 0, }; - tmpl.cq = ibv_exp_create_cq(priv->ctx, cq_size, NULL, NULL, 0, + if (priv->cqe_comp) { + attr.cq.comp_mask |= IBV_EXP_CQ_INIT_ATTR_FLAGS; + attr.cq.flags |= IBV_EXP_CQ_COMPRESSED_CQE; + /* + * For vectorized Rx, it must not be doubled in order to + * make cq_ci and rq_ci aligned. + */ + if (rxq_check_vec_support(&tmpl.rxq) < 0) + cqe_n = (desc * 2) - 1; /* Double the number of CQEs. */ + } + tmpl.cq = ibv_exp_create_cq(priv->ctx, cqe_n, NULL, tmpl.channel, 0, &attr.cq); if (tmpl.cq == NULL) { ret = ENOMEM; @@ -1231,34 +965,57 @@ rxq_setup(struct rte_eth_dev *dev, struct rxq *rxq, uint16_t desc, DEBUG("priv->device_attr.max_sge is %d", priv->device_attr.max_sge); /* Configure VLAN stripping. */ - tmpl.vlan_strip = dev->data->dev_conf.rxmode.hw_vlan_strip; + tmpl.rxq.vlan_strip = (priv->hw_vlan_strip && + !!dev->data->dev_conf.rxmode.hw_vlan_strip); attr.wq = (struct ibv_exp_wq_init_attr){ .wq_context = NULL, /* Could be useful in the future. */ .wq_type = IBV_EXP_WQT_RQ, /* Max number of outstanding WRs. */ - .max_recv_wr = ((priv->device_attr.max_qp_wr < (int)cq_size) ? - priv->device_attr.max_qp_wr : - (int)cq_size), + .max_recv_wr = desc >> tmpl.rxq.sges_n, /* Max number of scatter/gather elements in a WR. */ - .max_recv_sge = ((priv->device_attr.max_sge < - MLX5_PMD_SGE_WR_N) ? - priv->device_attr.max_sge : - MLX5_PMD_SGE_WR_N), + .max_recv_sge = 1 << tmpl.rxq.sges_n, .pd = priv->pd, .cq = tmpl.cq, .comp_mask = - IBV_EXP_CREATE_WQ_RES_DOMAIN | -#ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS IBV_EXP_CREATE_WQ_VLAN_OFFLOADS | -#endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */ 0, - .res_domain = tmpl.rd, -#ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS - .vlan_offloads = (tmpl.vlan_strip ? + .vlan_offloads = (tmpl.rxq.vlan_strip ? IBV_EXP_RECEIVE_WQ_CVLAN_STRIP : 0), -#endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */ }; + /* By default, FCS (CRC) is stripped by hardware. */ + if (dev->data->dev_conf.rxmode.hw_strip_crc) { + tmpl.rxq.crc_present = 0; + } else if (priv->hw_fcs_strip) { + /* Ask HW/Verbs to leave CRC in place when supported. */ + attr.wq.flags |= IBV_EXP_CREATE_WQ_FLAG_SCATTER_FCS; + attr.wq.comp_mask |= IBV_EXP_CREATE_WQ_FLAGS; + tmpl.rxq.crc_present = 1; + } else { + WARN("%p: CRC stripping has been disabled but will still" + " be performed by hardware, make sure MLNX_OFED and" + " firmware are up to date", + (void *)dev); + tmpl.rxq.crc_present = 0; + } + DEBUG("%p: CRC stripping is %s, %u bytes will be subtracted from" + " incoming frames to hide it", + (void *)dev, + tmpl.rxq.crc_present ? "disabled" : "enabled", + tmpl.rxq.crc_present << 2); + if (!mlx5_getenv_int("MLX5_PMD_ENABLE_PADDING")) + ; /* Nothing else to do. */ + else if (priv->hw_padding) { + INFO("%p: enabling packet padding on queue %p", + (void *)dev, (void *)rxq_ctrl); + attr.wq.flags |= IBV_EXP_CREATE_WQ_FLAG_RX_END_PADDING; + attr.wq.comp_mask |= IBV_EXP_CREATE_WQ_FLAGS; + } else + WARN("%p: packet padding has been requested but is not" + " supported, make sure MLNX_OFED and firmware are" + " up to date", + (void *)dev); + tmpl.wq = ibv_exp_create_wq(priv->ctx, &attr.wq); if (tmpl.wq == NULL) { ret = (errno ? errno : EINVAL); @@ -1266,43 +1023,22 @@ rxq_setup(struct rte_eth_dev *dev, struct rxq *rxq, uint16_t desc, (void *)dev, strerror(ret)); goto error; } - if (tmpl.sp) - ret = rxq_alloc_elts_sp(&tmpl, desc, NULL); - else - ret = rxq_alloc_elts(&tmpl, desc, NULL); - if (ret) { - ERROR("%p: RXQ allocation failed: %s", - (void *)dev, strerror(ret)); + /* + * Make sure number of WRs*SGEs match expectations since a queue + * cannot allocate more than "desc" buffers. + */ + if (((int)attr.wq.max_recv_wr != (desc >> tmpl.rxq.sges_n)) || + ((int)attr.wq.max_recv_sge != (1 << tmpl.rxq.sges_n))) { + ERROR("%p: requested %u*%u but got %u*%u WRs*SGEs", + (void *)dev, + (desc >> tmpl.rxq.sges_n), (1 << tmpl.rxq.sges_n), + attr.wq.max_recv_wr, attr.wq.max_recv_sge); + ret = EINVAL; goto error; } /* Save port ID. */ - tmpl.port_id = dev->data->port_id; - DEBUG("%p: RTE port ID: %u", (void *)rxq, tmpl.port_id); - attr.params = (struct ibv_exp_query_intf_params){ - .intf_scope = IBV_EXP_INTF_GLOBAL, -#ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS - .intf_version = 1, -#endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */ - .intf = IBV_EXP_INTF_CQ, - .obj = tmpl.cq, - }; - tmpl.if_cq = ibv_exp_query_intf(priv->ctx, &attr.params, &status); - if (tmpl.if_cq == NULL) { - ERROR("%p: CQ interface family query failed with status %d", - (void *)dev, status); - goto error; - } - attr.params = (struct ibv_exp_query_intf_params){ - .intf_scope = IBV_EXP_INTF_GLOBAL, - .intf = IBV_EXP_INTF_WQ, - .obj = tmpl.wq, - }; - tmpl.if_wq = ibv_exp_query_intf(priv->ctx, &attr.params, &status); - if (tmpl.if_wq == NULL) { - ERROR("%p: WQ interface family query failed with status %d", - (void *)dev, status); - goto error; - } + tmpl.rxq.port_id = dev->data->port_id; + DEBUG("%p: RTE port ID: %u", (void *)rxq_ctrl, tmpl.rxq.port_id); /* Change queue state to ready. */ mod = (struct ibv_exp_wq_attr){ .attr_mask = IBV_EXP_WQ_ATTR_STATE, @@ -1314,56 +1050,41 @@ rxq_setup(struct rte_eth_dev *dev, struct rxq *rxq, uint16_t desc, (void *)dev, strerror(ret)); goto error; } - /* Post SGEs. */ - if (tmpl.sp) { - struct rxq_elt_sp (*elts)[tmpl.elts_n] = tmpl.elts.sp; - - for (i = 0; (i != RTE_DIM(*elts)); ++i) { - ret = tmpl.if_wq->recv_sg_list - (tmpl.wq, - (*elts)[i].sges, - RTE_DIM((*elts)[i].sges)); - if (ret) - break; - } - } else { - struct rxq_elt (*elts)[tmpl.elts_n] = tmpl.elts.no_sp; - - for (i = 0; (i != RTE_DIM(*elts)); ++i) { - ret = tmpl.if_wq->recv_burst( - tmpl.wq, - &(*elts)[i].sge, - 1); - if (ret) - break; - } + ret = rxq_setup(&tmpl); + if (ret) { + ERROR("%p: cannot initialize RX queue structure: %s", + (void *)dev, strerror(ret)); + goto error; } + ret = rxq_alloc_elts(&tmpl, desc); if (ret) { - ERROR("%p: failed to post SGEs with error %d", - (void *)dev, ret); - /* Set ret because it does not contain a valid errno value. */ - ret = EIO; + ERROR("%p: RXQ allocation failed: %s", + (void *)dev, strerror(ret)); goto error; } /* Clean up rxq in case we're reinitializing it. */ - DEBUG("%p: cleaning-up old rxq just in case", (void *)rxq); - rxq_cleanup(rxq); - *rxq = tmpl; - DEBUG("%p: rxq updated with %p", (void *)rxq, (void *)&tmpl); + DEBUG("%p: cleaning-up old rxq just in case", (void *)rxq_ctrl); + rxq_cleanup(rxq_ctrl); + /* Move mbuf pointers to dedicated storage area in RX queue. */ + elts = (void *)(rxq_ctrl + 1); + rte_memcpy(elts, tmpl.rxq.elts, sizeof(*elts)); +#ifndef NDEBUG + memset(tmpl.rxq.elts, 0x55, sizeof(*elts)); +#endif + rte_free(tmpl.rxq.elts); + tmpl.rxq.elts = elts; + *rxq_ctrl = tmpl; + /* Update doorbell counter. */ + rxq_ctrl->rxq.rq_ci = desc >> rxq_ctrl->rxq.sges_n; + rte_wmb(); + *rxq_ctrl->rxq.rq_db = htonl(rxq_ctrl->rxq.rq_ci); + DEBUG("%p: rxq updated with %p", (void *)rxq_ctrl, (void *)&tmpl); assert(ret == 0); - /* Assign function in queue. */ -#ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS - rxq->poll = rxq->if_cq->poll_length_flags_cvlan; -#else /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */ - rxq->poll = rxq->if_cq->poll_length_flags; -#endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */ - if (rxq->sp) - rxq->recv = rxq->if_wq->recv_sg_list; - else - rxq->recv = rxq->if_wq->recv_burst; return 0; error: + elts = tmpl.rxq.elts; rxq_cleanup(&tmpl); + rte_free(elts); assert(ret > 0); return ret; } @@ -1394,9 +1115,21 @@ mlx5_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc, { struct priv *priv = dev->data->dev_private; struct rxq *rxq = (*priv->rxqs)[idx]; + struct rxq_ctrl *rxq_ctrl = container_of(rxq, struct rxq_ctrl, rxq); + const uint16_t desc_n = + desc + priv->rx_vec_en * MLX5_VPMD_DESCS_PER_LOOP; int ret; + if (mlx5_is_secondary()) + return -E_RTE_SECONDARY; + priv_lock(priv); + if (!rte_is_power_of_2(desc)) { + desc = 1 << log2above(desc); + WARN("%p: increased number of descriptors in RX queue %u" + " to the next power of two (%d)", + (void *)dev, idx, desc); + } DEBUG("%p: configuring queue %u for %u descriptors", (void *)dev, idx, desc); if (idx >= priv->rxqs_n) { @@ -1413,29 +1146,40 @@ mlx5_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc, return -EEXIST; } (*priv->rxqs)[idx] = NULL; - rxq_cleanup(rxq); + rxq_cleanup(rxq_ctrl); + /* Resize if rxq size is changed. */ + if (rxq_ctrl->rxq.elts_n != log2above(desc)) { + rxq_ctrl = rte_realloc(rxq_ctrl, + sizeof(*rxq_ctrl) + desc_n * + sizeof(struct rte_mbuf *), + RTE_CACHE_LINE_SIZE); + if (!rxq_ctrl) { + ERROR("%p: unable to reallocate queue index %u", + (void *)dev, idx); + priv_unlock(priv); + return -ENOMEM; + } + } } else { - rxq = rte_calloc_socket("RXQ", 1, sizeof(*rxq), 0, socket); - if (rxq == NULL) { + rxq_ctrl = rte_calloc_socket("RXQ", 1, sizeof(*rxq_ctrl) + + desc_n * + sizeof(struct rte_mbuf *), + 0, socket); + if (rxq_ctrl == NULL) { ERROR("%p: unable to allocate queue index %u", (void *)dev, idx); priv_unlock(priv); return -ENOMEM; } } - ret = rxq_setup(dev, rxq, desc, socket, conf, mp); + ret = rxq_ctrl_setup(dev, rxq_ctrl, desc, socket, conf, mp); if (ret) - rte_free(rxq); + rte_free(rxq_ctrl); else { - rxq->stats.idx = idx; + rxq_ctrl->rxq.stats.idx = idx; DEBUG("%p: adding RX queue %p to list", - (void *)dev, (void *)rxq); - (*priv->rxqs)[idx] = rxq; - /* Update receive callback. */ - if (rxq->sp) - dev->rx_pkt_burst = mlx5_rx_burst_sp; - else - dev->rx_pkt_burst = mlx5_rx_burst; + (void *)dev, (void *)rxq_ctrl); + (*priv->rxqs)[idx] = &rxq_ctrl->rxq; } priv_unlock(priv); return -ret; @@ -1451,21 +1195,187 @@ void mlx5_rx_queue_release(void *dpdk_rxq) { struct rxq *rxq = (struct rxq *)dpdk_rxq; + struct rxq_ctrl *rxq_ctrl; struct priv *priv; unsigned int i; + if (mlx5_is_secondary()) + return; + if (rxq == NULL) return; - priv = rxq->priv; + rxq_ctrl = container_of(rxq, struct rxq_ctrl, rxq); + priv = rxq_ctrl->priv; priv_lock(priv); + if (priv_flow_rxq_in_use(priv, rxq)) + rte_panic("Rx queue %p is still used by a flow and cannot be" + " removed\n", (void *)rxq_ctrl); for (i = 0; (i != priv->rxqs_n); ++i) if ((*priv->rxqs)[i] == rxq) { DEBUG("%p: removing RX queue %p from list", - (void *)priv->dev, (void *)rxq); + (void *)priv->dev, (void *)rxq_ctrl); (*priv->rxqs)[i] = NULL; break; } - rxq_cleanup(rxq); - rte_free(rxq); + rxq_cleanup(rxq_ctrl); + rte_free(rxq_ctrl); priv_unlock(priv); } + +/** + * Allocate queue vector and fill epoll fd list for Rx interrupts. + * + * @param priv + * Pointer to private structure. + * + * @return + * 0 on success, negative on failure. + */ +int +priv_rx_intr_vec_enable(struct priv *priv) +{ + unsigned int i; + unsigned int rxqs_n = priv->rxqs_n; + unsigned int n = RTE_MIN(rxqs_n, (uint32_t)RTE_MAX_RXTX_INTR_VEC_ID); + unsigned int count = 0; + struct rte_intr_handle *intr_handle = priv->dev->intr_handle; + + if (!priv->dev->data->dev_conf.intr_conf.rxq) + return 0; + priv_rx_intr_vec_disable(priv); + intr_handle->intr_vec = malloc(sizeof(intr_handle->intr_vec[rxqs_n])); + if (intr_handle->intr_vec == NULL) { + ERROR("failed to allocate memory for interrupt vector," + " Rx interrupts will not be supported"); + return -ENOMEM; + } + intr_handle->type = RTE_INTR_HANDLE_EXT; + for (i = 0; i != n; ++i) { + struct rxq *rxq = (*priv->rxqs)[i]; + struct rxq_ctrl *rxq_ctrl = + container_of(rxq, struct rxq_ctrl, rxq); + int fd; + int flags; + int rc; + + /* Skip queues that cannot request interrupts. */ + if (!rxq || !rxq_ctrl->channel) { + /* Use invalid intr_vec[] index to disable entry. */ + intr_handle->intr_vec[i] = + RTE_INTR_VEC_RXTX_OFFSET + + RTE_MAX_RXTX_INTR_VEC_ID; + continue; + } + if (count >= RTE_MAX_RXTX_INTR_VEC_ID) { + ERROR("too many Rx queues for interrupt vector size" + " (%d), Rx interrupts cannot be enabled", + RTE_MAX_RXTX_INTR_VEC_ID); + priv_rx_intr_vec_disable(priv); + return -1; + } + fd = rxq_ctrl->channel->fd; + flags = fcntl(fd, F_GETFL); + rc = fcntl(fd, F_SETFL, flags | O_NONBLOCK); + if (rc < 0) { + ERROR("failed to make Rx interrupt file descriptor" + " %d non-blocking for queue index %d", fd, i); + priv_rx_intr_vec_disable(priv); + return -1; + } + intr_handle->intr_vec[i] = RTE_INTR_VEC_RXTX_OFFSET + count; + intr_handle->efds[count] = fd; + count++; + } + if (!count) + priv_rx_intr_vec_disable(priv); + else + intr_handle->nb_efd = count; + return 0; +} + +/** + * Clean up Rx interrupts handler. + * + * @param priv + * Pointer to private structure. + */ +void +priv_rx_intr_vec_disable(struct priv *priv) +{ + struct rte_intr_handle *intr_handle = priv->dev->intr_handle; + + rte_intr_free_epoll_fd(intr_handle); + free(intr_handle->intr_vec); + intr_handle->nb_efd = 0; + intr_handle->intr_vec = NULL; +} + +#ifdef HAVE_UPDATE_CQ_CI + +/** + * DPDK callback for Rx queue interrupt enable. + * + * @param dev + * Pointer to Ethernet device structure. + * @param rx_queue_id + * Rx queue number. + * + * @return + * 0 on success, negative on failure. + */ +int +mlx5_rx_intr_enable(struct rte_eth_dev *dev, uint16_t rx_queue_id) +{ + struct priv *priv = mlx5_get_priv(dev); + struct rxq *rxq = (*priv->rxqs)[rx_queue_id]; + struct rxq_ctrl *rxq_ctrl = container_of(rxq, struct rxq_ctrl, rxq); + int ret; + + if (!rxq || !rxq_ctrl->channel) { + ret = EINVAL; + } else { + ibv_mlx5_exp_update_cq_ci(rxq_ctrl->cq, rxq->cq_ci); + ret = ibv_req_notify_cq(rxq_ctrl->cq, 0); + } + if (ret) + WARN("unable to arm interrupt on rx queue %d", rx_queue_id); + return -ret; +} + +/** + * DPDK callback for Rx queue interrupt disable. + * + * @param dev + * Pointer to Ethernet device structure. + * @param rx_queue_id + * Rx queue number. + * + * @return + * 0 on success, negative on failure. + */ +int +mlx5_rx_intr_disable(struct rte_eth_dev *dev, uint16_t rx_queue_id) +{ + struct priv *priv = mlx5_get_priv(dev); + struct rxq *rxq = (*priv->rxqs)[rx_queue_id]; + struct rxq_ctrl *rxq_ctrl = container_of(rxq, struct rxq_ctrl, rxq); + struct ibv_cq *ev_cq; + void *ev_ctx; + int ret; + + if (!rxq || !rxq_ctrl->channel) { + ret = EINVAL; + } else { + ret = ibv_get_cq_event(rxq_ctrl->cq->channel, &ev_cq, &ev_ctx); + if (ret || ev_cq != rxq_ctrl->cq) + ret = EINVAL; + } + if (ret) + WARN("unable to disable interrupt on rx queue %d", + rx_queue_id); + else + ibv_ack_cq_events(rxq_ctrl->cq, 1); + return -ret; +} + +#endif /* HAVE_UPDATE_CQ_CI */