/* 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 <infiniband/verbs.h>
#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"
+#pragma GCC diagnostic ignored "-Wpedantic"
#endif
#include <rte_mbuf.h>
#include <rte_malloc.h>
#include <rte_ethdev.h>
#include <rte_common.h>
#ifdef PEDANTIC
-#pragma GCC diagnostic error "-pedantic"
+#pragma GCC diagnostic error "-Wpedantic"
#endif
#include "mlx5_utils.h"
+#include "mlx5_defs.h"
#include "mlx5.h"
#include "mlx5_rxtx.h"
#include "mlx5_autoconf.h"
* Pointer to TX queue structure.
* @param elts_n
* Number of elements to allocate.
- *
- * @return
- * 0 on success, errno value on failure.
*/
-static int
+static void
txq_alloc_elts(struct txq_ctrl *txq_ctrl, unsigned int elts_n)
{
unsigned int i;
- struct txq_elt (*elts)[elts_n] =
- rte_calloc_socket("TXQ", 1, sizeof(*elts), 0, txq_ctrl->socket);
- int ret = 0;
- if (elts == NULL) {
- ERROR("%p: can't allocate packets array", (void *)txq_ctrl);
- ret = ENOMEM;
- goto error;
- }
- for (i = 0; (i != elts_n); ++i) {
- struct txq_elt *elt = &(*elts)[i];
+ for (i = 0; (i != elts_n); ++i)
+ (*txq_ctrl->txq.elts)[i] = NULL;
+ for (i = 0; (i != (1u << txq_ctrl->txq.wqe_n)); ++i) {
+ volatile struct mlx5_wqe64 *wqe =
+ (volatile struct mlx5_wqe64 *)
+ txq_ctrl->txq.wqes + i;
- elt->buf = NULL;
+ memset((void *)(uintptr_t)wqe, 0x0, sizeof(*wqe));
}
DEBUG("%p: allocated and configured %u WRs", (void *)txq_ctrl, elts_n);
- txq_ctrl->txq.elts_n = elts_n;
- txq_ctrl->txq.elts = elts;
txq_ctrl->txq.elts_head = 0;
txq_ctrl->txq.elts_tail = 0;
txq_ctrl->txq.elts_comp = 0;
- /* Request send completion every MLX5_PMD_TX_PER_COMP_REQ packets or
- * at least 4 times per ring. */
- txq_ctrl->txq.elts_comp_cd_init =
- ((MLX5_PMD_TX_PER_COMP_REQ < (elts_n / 4)) ?
- MLX5_PMD_TX_PER_COMP_REQ : (elts_n / 4));
- txq_ctrl->txq.elts_comp_cd = txq_ctrl->txq.elts_comp_cd_init;
- assert(ret == 0);
- return 0;
-error:
- rte_free(elts);
-
- DEBUG("%p: failed, freed everything", (void *)txq_ctrl);
- assert(ret > 0);
- return ret;
}
/**
static void
txq_free_elts(struct txq_ctrl *txq_ctrl)
{
- unsigned int elts_n = txq_ctrl->txq.elts_n;
+ unsigned int elts_n = 1 << txq_ctrl->txq.elts_n;
unsigned int elts_head = txq_ctrl->txq.elts_head;
unsigned int elts_tail = txq_ctrl->txq.elts_tail;
- struct txq_elt (*elts)[elts_n] = txq_ctrl->txq.elts;
+ struct rte_mbuf *(*elts)[elts_n] = txq_ctrl->txq.elts;
DEBUG("%p: freeing WRs", (void *)txq_ctrl);
- txq_ctrl->txq.elts_n = 0;
txq_ctrl->txq.elts_head = 0;
txq_ctrl->txq.elts_tail = 0;
txq_ctrl->txq.elts_comp = 0;
- txq_ctrl->txq.elts_comp_cd = 0;
- txq_ctrl->txq.elts_comp_cd_init = 0;
- txq_ctrl->txq.elts = NULL;
- if (elts == NULL)
- return;
while (elts_tail != elts_head) {
- struct txq_elt *elt = &(*elts)[elts_tail];
+ struct rte_mbuf *elt = (*elts)[elts_tail];
- assert(elt->buf != NULL);
- rte_pktmbuf_free(elt->buf);
+ assert(elt != NULL);
+ rte_pktmbuf_free(elt);
#ifndef NDEBUG
/* Poisoning. */
- memset(elt, 0x77, sizeof(*elt));
+ memset(&(*elts)[elts_tail],
+ 0x77,
+ sizeof((*elts)[elts_tail]));
#endif
if (++elts_tail == elts_n)
elts_tail = 0;
}
- rte_free(elts);
}
/**
DEBUG("cleaning up %p", (void *)txq_ctrl);
txq_free_elts(txq_ctrl);
- txq_ctrl->txq.poll_cnt = NULL;
- txq_ctrl->txq.send_flush = NULL;
if (txq_ctrl->if_qp != NULL) {
- assert(txq_ctrl->txq.priv != NULL);
- assert(txq_ctrl->txq.priv->ctx != NULL);
- assert(txq_ctrl->txq.qp != NULL);
+ assert(txq_ctrl->priv != NULL);
+ assert(txq_ctrl->priv->ctx != NULL);
+ assert(txq_ctrl->qp != NULL);
params = (struct ibv_exp_release_intf_params){
.comp_mask = 0,
};
- claim_zero(ibv_exp_release_intf(txq_ctrl->txq.priv->ctx,
+ claim_zero(ibv_exp_release_intf(txq_ctrl->priv->ctx,
txq_ctrl->if_qp,
¶ms));
}
if (txq_ctrl->if_cq != NULL) {
- assert(txq_ctrl->txq.priv != NULL);
- assert(txq_ctrl->txq.priv->ctx != NULL);
- assert(txq_ctrl->txq.cq != NULL);
+ assert(txq_ctrl->priv != NULL);
+ assert(txq_ctrl->priv->ctx != NULL);
+ assert(txq_ctrl->cq != NULL);
params = (struct ibv_exp_release_intf_params){
.comp_mask = 0,
};
- claim_zero(ibv_exp_release_intf(txq_ctrl->txq.priv->ctx,
+ claim_zero(ibv_exp_release_intf(txq_ctrl->priv->ctx,
txq_ctrl->if_cq,
¶ms));
}
- if (txq_ctrl->txq.qp != NULL)
- claim_zero(ibv_destroy_qp(txq_ctrl->txq.qp));
- if (txq_ctrl->txq.cq != NULL)
- claim_zero(ibv_destroy_cq(txq_ctrl->txq.cq));
+ if (txq_ctrl->qp != NULL)
+ claim_zero(ibv_destroy_qp(txq_ctrl->qp));
+ if (txq_ctrl->cq != NULL)
+ claim_zero(ibv_destroy_cq(txq_ctrl->cq));
if (txq_ctrl->rd != NULL) {
struct ibv_exp_destroy_res_domain_attr attr = {
.comp_mask = 0,
};
- assert(txq_ctrl->txq.priv != NULL);
- assert(txq_ctrl->txq.priv->ctx != NULL);
- claim_zero(ibv_exp_destroy_res_domain(txq_ctrl->txq.priv->ctx,
+ assert(txq_ctrl->priv != NULL);
+ assert(txq_ctrl->priv->ctx != NULL);
+ claim_zero(ibv_exp_destroy_res_domain(txq_ctrl->priv->ctx,
txq_ctrl->rd,
&attr));
}
memset(txq_ctrl, 0, sizeof(*txq_ctrl));
}
+/**
+ * Initialize TX queue.
+ *
+ * @param tmpl
+ * Pointer to TX queue control template.
+ * @param txq_ctrl
+ * Pointer to TX queue control.
+ *
+ * @return
+ * 0 on success, errno value on failure.
+ */
+static inline int
+txq_setup(struct txq_ctrl *tmpl, struct txq_ctrl *txq_ctrl)
+{
+ struct mlx5_qp *qp = to_mqp(tmpl->qp);
+ struct ibv_cq *ibcq = tmpl->cq;
+ struct mlx5_cq *cq = to_mxxx(cq, cq);
+
+ if (cq->cqe_sz != RTE_CACHE_LINE_SIZE) {
+ ERROR("Wrong MLX5_CQE_SIZE environment variable value: "
+ "it should be set to %u", RTE_CACHE_LINE_SIZE);
+ return EINVAL;
+ }
+ tmpl->txq.cqe_n = log2above(ibcq->cqe);
+ tmpl->txq.qp_num_8s = qp->ctrl_seg.qp_num << 8;
+ tmpl->txq.wqes = qp->gen_data.sqstart;
+ tmpl->txq.wqe_n = log2above(qp->sq.wqe_cnt);
+ tmpl->txq.qp_db = &qp->gen_data.db[MLX5_SND_DBR];
+ tmpl->txq.bf_reg = qp->gen_data.bf->reg;
+ tmpl->txq.cq_db = cq->dbrec;
+ tmpl->txq.cqes =
+ (volatile struct mlx5_cqe (*)[])
+ (uintptr_t)cq->active_buf->buf;
+ tmpl->txq.elts =
+ (struct rte_mbuf *(*)[1 << tmpl->txq.elts_n])
+ ((uintptr_t)txq_ctrl + sizeof(*txq_ctrl));
+ return 0;
+}
+
/**
* Configure a TX queue.
*
* 0 on success, errno value on failure.
*/
int
-txq_setup(struct rte_eth_dev *dev, struct txq_ctrl *txq_ctrl, uint16_t desc,
- unsigned int socket, const struct rte_eth_txconf *conf)
+txq_ctrl_setup(struct rte_eth_dev *dev, struct txq_ctrl *txq_ctrl,
+ uint16_t desc, unsigned int socket,
+ const struct rte_eth_txconf *conf)
{
struct priv *priv = mlx5_get_priv(dev);
struct txq_ctrl tmpl = {
+ .priv = priv,
.socket = socket,
- .txq = {
- .priv = priv,
- },
};
union {
struct ibv_exp_query_intf_params params;
struct ibv_exp_res_domain_init_attr rd;
struct ibv_exp_cq_init_attr cq;
struct ibv_exp_qp_attr mod;
+ struct ibv_exp_cq_attr cq_attr;
} attr;
enum ibv_exp_query_intf_status status;
int ret = 0;
- (void)conf; /* Thresholds configuration (ignored). */
- if (desc == 0) {
- ERROR("%p: invalid number of TX descriptors", (void *)dev);
- return EINVAL;
+ if (mlx5_getenv_int("MLX5_ENABLE_CQE_COMPRESSION")) {
+ ret = ENOTSUP;
+ ERROR("MLX5_ENABLE_CQE_COMPRESSION must never be set");
+ goto error;
}
+ (void)conf; /* Thresholds configuration (ignored). */
+ assert(desc > MLX5_TX_COMP_THRESH);
+ tmpl.txq.elts_n = log2above(desc);
/* MRs will be registered in mp2mr[] later. */
attr.rd = (struct ibv_exp_res_domain_init_attr){
.comp_mask = (IBV_EXP_RES_DOMAIN_THREAD_MODEL |
.comp_mask = IBV_EXP_CQ_INIT_ATTR_RES_DOMAIN,
.res_domain = tmpl.rd,
};
- tmpl.txq.cq = ibv_exp_create_cq(priv->ctx, desc, NULL, NULL, 0,
- &attr.cq);
- if (tmpl.txq.cq == NULL) {
+ tmpl.cq = ibv_exp_create_cq(priv->ctx,
+ (((desc / MLX5_TX_COMP_THRESH) - 1) ?
+ ((desc / MLX5_TX_COMP_THRESH) - 1) : 1),
+ NULL, NULL, 0, &attr.cq);
+ if (tmpl.cq == NULL) {
ret = ENOMEM;
ERROR("%p: CQ creation failure: %s",
(void *)dev, strerror(ret));
priv->device_attr.max_sge);
attr.init = (struct ibv_exp_qp_init_attr){
/* CQ to be associated with the send queue. */
- .send_cq = tmpl.txq.cq,
+ .send_cq = tmpl.cq,
/* CQ to be associated with the receive queue. */
- .recv_cq = tmpl.txq.cq,
+ .recv_cq = tmpl.cq,
.cap = {
/* Max number of outstanding WRs. */
.max_send_wr = ((priv->device_attr.max_qp_wr < desc) ?
priv->device_attr.max_qp_wr :
desc),
- /* Max number of scatter/gather elements in a WR. */
+ /*
+ * Max number of scatter/gather elements in a WR,
+ * must be 1 to prevent libmlx5 from trying to affect
+ * too much memory. TX gather is not impacted by the
+ * priv->device_attr.max_sge limit and will still work
+ * properly.
+ */
.max_send_sge = 1,
},
.qp_type = IBV_QPT_RAW_PACKET,
.comp_mask = (IBV_EXP_QP_INIT_ATTR_PD |
IBV_EXP_QP_INIT_ATTR_RES_DOMAIN),
};
- tmpl.txq.qp = ibv_exp_create_qp(priv->ctx, &attr.init);
- if (tmpl.txq.qp == NULL) {
+ if (priv->txq_inline && (priv->txqs_n >= priv->txqs_inline)) {
+ tmpl.txq.max_inline =
+ ((priv->txq_inline + (RTE_CACHE_LINE_SIZE - 1)) /
+ RTE_CACHE_LINE_SIZE);
+ attr.init.cap.max_inline_data =
+ tmpl.txq.max_inline * RTE_CACHE_LINE_SIZE;
+ tmpl.txq.inline_en = 1;
+ }
+ if (priv->tso) {
+ uint16_t max_tso_inline = ((MLX5_MAX_TSO_HEADER +
+ (RTE_CACHE_LINE_SIZE - 1)) /
+ RTE_CACHE_LINE_SIZE);
+
+ attr.init.max_tso_header =
+ max_tso_inline * RTE_CACHE_LINE_SIZE;
+ attr.init.comp_mask |= IBV_EXP_QP_INIT_ATTR_MAX_TSO_HEADER;
+ tmpl.txq.max_inline = RTE_MAX(tmpl.txq.max_inline,
+ max_tso_inline);
+ tmpl.txq.tso_en = 1;
+ }
+ tmpl.qp = ibv_exp_create_qp(priv->ctx, &attr.init);
+ if (tmpl.qp == NULL) {
ret = (errno ? errno : EINVAL);
ERROR("%p: QP creation failure: %s",
(void *)dev, strerror(ret));
goto error;
}
+ DEBUG("TX queue capabilities: max_send_wr=%u, max_send_sge=%u,"
+ " max_inline_data=%u",
+ attr.init.cap.max_send_wr,
+ attr.init.cap.max_send_sge,
+ attr.init.cap.max_inline_data);
attr.mod = (struct ibv_exp_qp_attr){
/* Move the QP to this state. */
.qp_state = IBV_QPS_INIT,
/* Primary port number. */
.port_num = priv->port
};
- ret = ibv_exp_modify_qp(tmpl.txq.qp, &attr.mod,
+ ret = ibv_exp_modify_qp(tmpl.qp, &attr.mod,
(IBV_EXP_QP_STATE | IBV_EXP_QP_PORT));
if (ret) {
ERROR("%p: QP state to IBV_QPS_INIT failed: %s",
(void *)dev, strerror(ret));
goto error;
}
- ret = txq_alloc_elts(&tmpl, desc);
+ ret = txq_setup(&tmpl, txq_ctrl);
if (ret) {
- ERROR("%p: TXQ allocation failed: %s",
+ ERROR("%p: cannot initialize TX queue structure: %s",
(void *)dev, strerror(ret));
goto error;
}
+ txq_alloc_elts(&tmpl, desc);
attr.mod = (struct ibv_exp_qp_attr){
.qp_state = IBV_QPS_RTR
};
- ret = ibv_exp_modify_qp(tmpl.txq.qp, &attr.mod, IBV_EXP_QP_STATE);
+ ret = ibv_exp_modify_qp(tmpl.qp, &attr.mod, IBV_EXP_QP_STATE);
if (ret) {
ERROR("%p: QP state to IBV_QPS_RTR failed: %s",
(void *)dev, strerror(ret));
goto error;
}
attr.mod.qp_state = IBV_QPS_RTS;
- ret = ibv_exp_modify_qp(tmpl.txq.qp, &attr.mod, IBV_EXP_QP_STATE);
+ ret = ibv_exp_modify_qp(tmpl.qp, &attr.mod, IBV_EXP_QP_STATE);
if (ret) {
ERROR("%p: QP state to IBV_QPS_RTS failed: %s",
(void *)dev, strerror(ret));
attr.params = (struct ibv_exp_query_intf_params){
.intf_scope = IBV_EXP_INTF_GLOBAL,
.intf = IBV_EXP_INTF_CQ,
- .obj = tmpl.txq.cq,
+ .obj = tmpl.cq,
};
tmpl.if_cq = ibv_exp_query_intf(priv->ctx, &attr.params, &status);
if (tmpl.if_cq == NULL) {
attr.params = (struct ibv_exp_query_intf_params){
.intf_scope = IBV_EXP_INTF_GLOBAL,
.intf = IBV_EXP_INTF_QP_BURST,
- .obj = tmpl.txq.qp,
-#ifdef HAVE_VERBS_VLAN_INSERTION
.intf_version = 1,
-#endif
+ .obj = tmpl.qp,
/* Enable multi-packet send if supported. */
.family_flags =
(priv->mps ?
DEBUG("%p: cleaning-up old txq just in case", (void *)txq_ctrl);
txq_cleanup(txq_ctrl);
*txq_ctrl = tmpl;
- txq_ctrl->txq.poll_cnt = txq_ctrl->if_cq->poll_cnt;
- txq_ctrl->txq.send_pending = txq_ctrl->if_qp->send_pending;
-#ifdef HAVE_VERBS_VLAN_INSERTION
- txq_ctrl->txq.send_pending_vlan = txq_ctrl->if_qp->send_pending_vlan;
-#endif
- txq_ctrl->txq.send_flush = txq_ctrl->if_qp->send_flush;
DEBUG("%p: txq updated with %p", (void *)txq_ctrl, (void *)&tmpl);
/* Pre-register known mempools. */
rte_mempool_walk(txq_mp2mr_iter, txq_ctrl);
{
struct priv *priv = dev->data->dev_private;
struct txq *txq = (*priv->txqs)[idx];
- struct txq_ctrl *txq_ctrl;
+ struct txq_ctrl *txq_ctrl = container_of(txq, struct txq_ctrl, txq);
int ret;
if (mlx5_is_secondary())
return -E_RTE_SECONDARY;
priv_lock(priv);
- if (txq)
- txq_ctrl = container_of(txq, struct txq_ctrl, txq);
+ if (desc <= MLX5_TX_COMP_THRESH) {
+ WARN("%p: number of descriptors requested for TX queue %u"
+ " must be higher than MLX5_TX_COMP_THRESH, using"
+ " %u instead of %u",
+ (void *)dev, idx, MLX5_TX_COMP_THRESH + 1, desc);
+ desc = MLX5_TX_COMP_THRESH + 1;
+ }
+ if (!rte_is_power_of_2(desc)) {
+ desc = 1 << log2above(desc);
+ WARN("%p: increased number of descriptors in TX 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->txqs_n) {
(*priv->txqs)[idx] = NULL;
txq_cleanup(txq_ctrl);
} else {
- txq_ctrl = rte_calloc_socket("TXQ", 1, sizeof(*txq_ctrl),
- 0, socket);
+ txq_ctrl =
+ rte_calloc_socket("TXQ", 1,
+ sizeof(*txq_ctrl) +
+ desc * sizeof(struct rte_mbuf *),
+ 0, socket);
if (txq_ctrl == NULL) {
ERROR("%p: unable to allocate queue index %u",
(void *)dev, idx);
return -ENOMEM;
}
}
- ret = txq_setup(dev, txq_ctrl, desc, socket, conf);
+ ret = txq_ctrl_setup(dev, txq_ctrl, desc, socket, conf);
if (ret)
rte_free(txq_ctrl);
else {
(void *)dev, (void *)txq_ctrl);
(*priv->txqs)[idx] = &txq_ctrl->txq;
/* Update send callback. */
- dev->tx_pkt_burst = mlx5_tx_burst;
+ priv_select_tx_function(priv);
}
priv_unlock(priv);
return -ret;
if (txq == NULL)
return;
txq_ctrl = container_of(txq, struct txq_ctrl, txq);
- priv = txq->priv;
+ priv = txq_ctrl->priv;
priv_lock(priv);
for (i = 0; (i != priv->txqs_n); ++i)
if ((*priv->txqs)[i] == txq) {
uint16_t pkts_n)
{
struct txq *txq = dpdk_txq;
- struct priv *priv = mlx5_secondary_data_setup(txq->priv);
+ struct txq_ctrl *txq_ctrl = container_of(txq, struct txq_ctrl, txq);
+ struct priv *priv = mlx5_secondary_data_setup(txq_ctrl->priv);
struct priv *primary_priv;
unsigned int index;
git.droids-corp.org / dpdk.git / blobdiff