net/mlx5: support hardware TSO
[dpdk.git] / drivers / net / mlx5 / mlx5.c
index 7264968..c258e43 100644 (file)
 /* 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_malloc.h>
 #include <rte_ethdev.h>
@@ -60,7 +60,7 @@
 #include <rte_common.h>
 #include <rte_kvargs.h>
 #ifdef PEDANTIC
-#pragma GCC diagnostic error "-pedantic"
+#pragma GCC diagnostic error "-Wpedantic"
 #endif
 
 #include "mlx5.h"
@@ -84,6 +84,9 @@
 /* Device parameter to enable multi-packet send WQEs. */
 #define MLX5_TXQ_MPW_EN "txq_mpw_en"
 
+/* Device parameter to enable hardware TSO offload. */
+#define MLX5_TSO "tso"
+
 /**
  * Retrieve integer value from environment variable.
  *
@@ -199,6 +202,9 @@ static const struct eth_dev_ops mlx5_dev_ops = {
        .link_update = mlx5_link_update,
        .stats_get = mlx5_stats_get,
        .stats_reset = mlx5_stats_reset,
+       .xstats_get = mlx5_xstats_get,
+       .xstats_reset = mlx5_xstats_reset,
+       .xstats_get_names = mlx5_xstats_get_names,
        .dev_infos_get = mlx5_dev_infos_get,
        .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
        .vlan_filter_set = mlx5_vlan_filter_set,
@@ -219,6 +225,8 @@ static const struct eth_dev_ops mlx5_dev_ops = {
        .rss_hash_update = mlx5_rss_hash_update,
        .rss_hash_conf_get = mlx5_rss_hash_conf_get,
        .filter_ctrl = mlx5_dev_filter_ctrl,
+       .rx_descriptor_status = mlx5_rx_descriptor_status,
+       .tx_descriptor_status = mlx5_tx_descriptor_status,
 };
 
 static struct {
@@ -286,7 +294,9 @@ mlx5_args_check(const char *key, const char *val, void *opaque)
        } else if (strcmp(MLX5_TXQS_MIN_INLINE, key) == 0) {
                priv->txqs_inline = tmp;
        } else if (strcmp(MLX5_TXQ_MPW_EN, key) == 0) {
-               priv->mps = !!tmp;
+               priv->mps &= !!tmp; /* Enable MPW only if HW supports */
+       } else if (strcmp(MLX5_TSO, key) == 0) {
+               priv->tso = !!tmp;
        } else {
                WARN("%s: unknown parameter", key);
                return -EINVAL;
@@ -313,6 +323,7 @@ mlx5_args(struct priv *priv, struct rte_devargs *devargs)
                MLX5_TXQ_INLINE,
                MLX5_TXQS_MIN_INLINE,
                MLX5_TXQ_MPW_EN,
+               MLX5_TSO,
                NULL,
        };
        struct rte_kvargs *kvlist;
@@ -330,8 +341,10 @@ mlx5_args(struct priv *priv, struct rte_devargs *devargs)
                if (rte_kvargs_count(kvlist, params[i])) {
                        ret = rte_kvargs_process(kvlist, params[i],
                                                 mlx5_args_check, priv);
-                       if (ret != 0)
+                       if (ret != 0) {
+                               rte_kvargs_free(kvlist);
                                return ret;
+                       }
                }
        }
        rte_kvargs_free(kvlist);
@@ -355,7 +368,7 @@ static struct eth_driver mlx5_driver;
  *   0 on success, negative errno value on failure.
  */
 static int
-mlx5_pci_devinit(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
+mlx5_pci_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
 {
        struct ibv_device **list;
        struct ibv_device *ibv_dev;
@@ -408,10 +421,26 @@ mlx5_pci_devinit(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
                sriov = ((pci_dev->id.device_id ==
                       PCI_DEVICE_ID_MELLANOX_CONNECTX4VF) ||
                      (pci_dev->id.device_id ==
-                      PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF));
-               /* Multi-packet send is only supported by ConnectX-4 Lx PF. */
-               mps = (pci_dev->id.device_id ==
-                      PCI_DEVICE_ID_MELLANOX_CONNECTX4LX);
+                      PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF) ||
+                     (pci_dev->id.device_id ==
+                      PCI_DEVICE_ID_MELLANOX_CONNECTX5VF) ||
+                     (pci_dev->id.device_id ==
+                      PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF));
+               /*
+                * Multi-packet send is supported by ConnectX-4 Lx PF as well
+                * as all ConnectX-5 devices.
+                */
+               switch (pci_dev->id.device_id) {
+               case PCI_DEVICE_ID_MELLANOX_CONNECTX4LX:
+               case PCI_DEVICE_ID_MELLANOX_CONNECTX5:
+               case PCI_DEVICE_ID_MELLANOX_CONNECTX5VF:
+               case PCI_DEVICE_ID_MELLANOX_CONNECTX5EX:
+               case PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF:
+                       mps = 1;
+                       break;
+               default:
+                       mps = 0;
+               }
                INFO("PCI information matches, using device \"%s\""
                     " (SR-IOV: %s, MPS: %s)",
                     list[i]->name,
@@ -458,6 +487,7 @@ mlx5_pci_devinit(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
                        IBV_EXP_DEVICE_ATTR_RX_HASH |
                        IBV_EXP_DEVICE_ATTR_VLAN_OFFLOADS |
                        IBV_EXP_DEVICE_ATTR_RX_PAD_END_ALIGN |
+                       IBV_EXP_DEVICE_ATTR_TSO_CAPS |
                        0;
 
                DEBUG("using port %u (%08" PRIx32 ")", port, test);
@@ -511,7 +541,7 @@ mlx5_pci_devinit(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
                priv->mtu = ETHER_MTU;
                priv->mps = mps; /* Enable MPW by default if supported. */
                priv->cqe_comp = 1; /* Enable compression by default. */
-               err = mlx5_args(priv, pci_dev->devargs);
+               err = mlx5_args(priv, pci_dev->device.devargs);
                if (err) {
                        ERROR("failed to process device arguments: %s",
                              strerror(err));
@@ -538,8 +568,9 @@ mlx5_pci_devinit(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
                priv->ind_table_max_size = exp_device_attr.rx_hash_caps.max_rwq_indirection_table_size;
                /* Remove this check once DPDK supports larger/variable
                 * indirection tables. */
-               if (priv->ind_table_max_size > (unsigned int)RSS_INDIRECTION_TABLE_SIZE)
-                       priv->ind_table_max_size = RSS_INDIRECTION_TABLE_SIZE;
+               if (priv->ind_table_max_size >
+                               (unsigned int)ETH_RSS_RETA_SIZE_512)
+                       priv->ind_table_max_size = ETH_RSS_RETA_SIZE_512;
                DEBUG("maximum RX indirection table size is %u",
                      priv->ind_table_max_size);
                priv->hw_vlan_strip = !!(exp_device_attr.wq_vlan_offloads_cap &
@@ -558,11 +589,22 @@ mlx5_pci_devinit(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
 
                priv_get_num_vfs(priv, &num_vfs);
                priv->sriov = (num_vfs || sriov);
+               priv->tso = ((priv->tso) &&
+                           (exp_device_attr.tso_caps.max_tso > 0) &&
+                           (exp_device_attr.tso_caps.supported_qpts &
+                           (1 << IBV_QPT_RAW_ETH)));
+               if (priv->tso)
+                       priv->max_tso_payload_sz =
+                               exp_device_attr.tso_caps.max_tso;
                if (priv->mps && !mps) {
                        ERROR("multi-packet send not supported on this device"
                              " (" MLX5_TXQ_MPW_EN ")");
                        err = ENOTSUP;
                        goto port_error;
+               } else if (priv->mps && priv->tso) {
+                       WARN("multi-packet send not supported in conjunction "
+                             "with TSO. MPS disabled");
+                       priv->mps = 0;
                }
                /* Allocate and register default RSS hash keys. */
                priv->rss_conf = rte_calloc(__func__, hash_rxq_init_n,
@@ -617,7 +659,7 @@ mlx5_pci_devinit(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
 
                        snprintf(name, sizeof(name), "%s port %u",
                                 ibv_get_device_name(ibv_dev), port);
-                       eth_dev = rte_eth_dev_allocate(name, RTE_ETH_DEV_PCI);
+                       eth_dev = rte_eth_dev_allocate(name);
                }
                if (eth_dev == NULL) {
                        ERROR("can not allocate rte ethdev");
@@ -652,22 +694,19 @@ mlx5_pci_devinit(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
                        eth_dev->rx_pkt_burst = mlx5_rx_burst_secondary_setup;
                } else {
                        eth_dev->data->dev_private = priv;
-                       eth_dev->data->rx_mbuf_alloc_failed = 0;
-                       eth_dev->data->mtu = ETHER_MTU;
                        eth_dev->data->mac_addrs = priv->mac;
                }
 
-               eth_dev->pci_dev = pci_dev;
+               eth_dev->device = &pci_dev->device;
                rte_eth_copy_pci_info(eth_dev, pci_dev);
                eth_dev->driver = &mlx5_driver;
                priv->dev = eth_dev;
                eth_dev->dev_ops = &mlx5_dev_ops;
 
-               TAILQ_INIT(&eth_dev->link_intr_cbs);
-
                /* Bring Ethernet device up. */
                DEBUG("forcing Ethernet interface up");
                priv_set_flags(priv, ~IFF_UP, IFF_UP);
+               mlx5_link_update(priv->dev, 1);
                continue;
 
 port_error:
@@ -721,6 +760,22 @@ static const struct rte_pci_id mlx5_pci_id_map[] = {
                RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
                               PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF)
        },
+       {
+               RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
+                              PCI_DEVICE_ID_MELLANOX_CONNECTX5)
+       },
+       {
+               RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
+                              PCI_DEVICE_ID_MELLANOX_CONNECTX5VF)
+       },
+       {
+               RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
+                              PCI_DEVICE_ID_MELLANOX_CONNECTX5EX)
+       },
+       {
+               RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
+                              PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF)
+       },
        {
                .vendor_id = 0
        }
@@ -728,9 +783,11 @@ static const struct rte_pci_id mlx5_pci_id_map[] = {
 
 static struct eth_driver mlx5_driver = {
        .pci_drv = {
-               .name = MLX5_DRIVER_NAME,
+               .driver = {
+                       .name = MLX5_DRIVER_NAME
+               },
                .id_table = mlx5_pci_id_map,
-               .devinit = mlx5_pci_devinit,
+               .probe = mlx5_pci_probe,
                .drv_flags = RTE_PCI_DRV_INTR_LSC,
        },
        .dev_private_size = sizeof(struct priv)
@@ -739,11 +796,10 @@ static struct eth_driver mlx5_driver = {
 /**
  * Driver initialization routine.
  */
-static int
-rte_mlx5_pmd_init(const char *name, const char *args)
+RTE_INIT(rte_mlx5_pmd_init);
+static void
+rte_mlx5_pmd_init(void)
 {
-       (void)name;
-       (void)args;
        /*
         * RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use
         * huge pages. Calling ibv_fork_init() during init allows
@@ -753,13 +809,8 @@ rte_mlx5_pmd_init(const char *name, const char *args)
        setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
        ibv_fork_init();
        rte_eal_pci_register(&mlx5_driver.pci_drv);
-       return 0;
 }
 
-static struct rte_driver rte_mlx5_driver = {
-       .type = PMD_PDEV,
-       .init = rte_mlx5_pmd_init,
-};
-
-PMD_REGISTER_DRIVER(rte_mlx5_driver, net_mlx5);
-DRIVER_REGISTER_PCI_TABLE(net_mlx5, mlx5_pci_id_map);
+RTE_PMD_EXPORT_NAME(net_mlx5, __COUNTER__);
+RTE_PMD_REGISTER_PCI_TABLE(net_mlx5, mlx5_pci_id_map);
+RTE_PMD_REGISTER_KMOD_DEP(net_mlx5, "* ib_uverbs & mlx5_core & mlx5_ib");