From 083c2dd317762cb7784b0ff2b3bcb1cad875b746 Mon Sep 17 00:00:00 2001 From: Yaacov Hazan Date: Thu, 3 Mar 2016 15:26:40 +0100 Subject: [PATCH] mlx5: refactor special flows handling Merge redundant code by adding a static initialization table to manage promiscuous and allmulticast (special) flows. New function priv_rehash_flows() implements the logic to enable/disable relevant flows in one place from any context. Signed-off-by: Yaacov Hazan Signed-off-by: Adrien Mazarguil --- drivers/net/mlx5/mlx5.c | 4 +- drivers/net/mlx5/mlx5.h | 6 +- drivers/net/mlx5/mlx5_defs.h | 3 + drivers/net/mlx5/mlx5_rxmode.c | 321 ++++++++++++++------------------ drivers/net/mlx5/mlx5_rxq.c | 33 +++- drivers/net/mlx5/mlx5_rxtx.h | 29 ++- drivers/net/mlx5/mlx5_trigger.c | 14 +- 7 files changed, 210 insertions(+), 200 deletions(-) diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c index 30d88b5cbc..52bf4b2a52 100644 --- a/drivers/net/mlx5/mlx5.c +++ b/drivers/net/mlx5/mlx5.c @@ -88,8 +88,8 @@ mlx5_dev_close(struct rte_eth_dev *dev) ((priv->ctx != NULL) ? priv->ctx->device->name : "")); /* In case mlx5_dev_stop() has not been called. */ priv_dev_interrupt_handler_uninstall(priv, dev); - priv_allmulticast_disable(priv); - priv_promiscuous_disable(priv); + priv_special_flow_disable(priv, HASH_RXQ_FLOW_TYPE_ALLMULTI); + priv_special_flow_disable(priv, HASH_RXQ_FLOW_TYPE_PROMISC); priv_mac_addrs_disable(priv); priv_destroy_hash_rxqs(priv); /* Prevent crashes when queues are still in use. */ diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h index 2f9a5940f3..1c69bfa92b 100644 --- a/drivers/net/mlx5/mlx5.h +++ b/drivers/net/mlx5/mlx5.h @@ -195,13 +195,11 @@ int mlx5_dev_rss_reta_update(struct rte_eth_dev *, /* mlx5_rxmode.c */ -int priv_promiscuous_enable(struct priv *); +int priv_special_flow_enable(struct priv *, enum hash_rxq_flow_type); +void priv_special_flow_disable(struct priv *, enum hash_rxq_flow_type); void mlx5_promiscuous_enable(struct rte_eth_dev *); -void priv_promiscuous_disable(struct priv *); void mlx5_promiscuous_disable(struct rte_eth_dev *); -int priv_allmulticast_enable(struct priv *); void mlx5_allmulticast_enable(struct rte_eth_dev *); -void priv_allmulticast_disable(struct priv *); void mlx5_allmulticast_disable(struct rte_eth_dev *); /* mlx5_stats.c */ diff --git a/drivers/net/mlx5/mlx5_defs.h b/drivers/net/mlx5/mlx5_defs.h index ae5eda9090..1f2a010df2 100644 --- a/drivers/net/mlx5/mlx5_defs.h +++ b/drivers/net/mlx5/mlx5_defs.h @@ -43,6 +43,9 @@ /* Maximum number of simultaneous VLAN filters. */ #define MLX5_MAX_VLAN_IDS 128 +/* Maximum number of special flows. */ +#define MLX5_MAX_SPECIAL_FLOWS 2 + /* Request send completion once in every 64 sends, might be less. */ #define MLX5_PMD_TX_PER_COMP_REQ 64 diff --git a/drivers/net/mlx5/mlx5_rxmode.c b/drivers/net/mlx5/mlx5_rxmode.c index 096fd18078..b2ed17e09c 100644 --- a/drivers/net/mlx5/mlx5_rxmode.c +++ b/drivers/net/mlx5/mlx5_rxmode.c @@ -58,31 +58,96 @@ #include "mlx5_rxtx.h" #include "mlx5_utils.h" -static void hash_rxq_promiscuous_disable(struct hash_rxq *); -static void hash_rxq_allmulticast_disable(struct hash_rxq *); +/* Initialization data for special flows. */ +static const struct special_flow_init special_flow_init[] = { + [HASH_RXQ_FLOW_TYPE_PROMISC] = { + .dst_mac_val = "\x00\x00\x00\x00\x00\x00", + .dst_mac_mask = "\x00\x00\x00\x00\x00\x00", + .hash_types = + 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 */ + 1 << HASH_RXQ_ETH | + 0, + }, + [HASH_RXQ_FLOW_TYPE_ALLMULTI] = { + .dst_mac_val = "\x01\x00\x00\x00\x00\x00", + .dst_mac_mask = "\x01\x00\x00\x00\x00\x00", + .hash_types = + 1 << HASH_RXQ_UDPV4 | + 1 << HASH_RXQ_IPV4 | +#ifdef HAVE_FLOW_SPEC_IPV6 + 1 << HASH_RXQ_UDPV6 | + 1 << HASH_RXQ_IPV6 | +#endif /* HAVE_FLOW_SPEC_IPV6 */ + 1 << HASH_RXQ_ETH | + 0, + }, +}; /** - * Enable promiscuous mode in a hash RX queue. + * Enable a special flow in a hash RX queue. * * @param hash_rxq * Pointer to hash RX queue structure. + * @param flow_type + * Special flow type. * * @return * 0 on success, errno value on failure. */ static int -hash_rxq_promiscuous_enable(struct hash_rxq *hash_rxq) +hash_rxq_special_flow_enable(struct hash_rxq *hash_rxq, + enum hash_rxq_flow_type flow_type) { struct ibv_exp_flow *flow; FLOW_ATTR_SPEC_ETH(data, hash_rxq_flow_attr(hash_rxq, NULL, 0)); struct ibv_exp_flow_attr *attr = &data->attr; + struct ibv_exp_flow_spec_eth *spec = &data->spec; + const uint8_t *mac; + const uint8_t *mask; - if (hash_rxq->promisc_flow != NULL) + /* Check if flow is relevant for this hash_rxq. */ + if (!(special_flow_init[flow_type].hash_types & (1 << hash_rxq->type))) + return 0; + /* Check if flow already exists. */ + if (hash_rxq->special_flow[flow_type] != NULL) return 0; - DEBUG("%p: enabling promiscuous mode", (void *)hash_rxq); - /* Promiscuous flows only differ from normal flows by not filtering - * on specific MAC addresses. */ + + /* + * No padding must be inserted by the compiler between attr and spec. + * This layout is expected by libibverbs. + */ + assert(((uint8_t *)attr + sizeof(*attr)) == (uint8_t *)spec); hash_rxq_flow_attr(hash_rxq, attr, sizeof(data)); + /* The first specification must be Ethernet. */ + assert(spec->type == IBV_EXP_FLOW_SPEC_ETH); + assert(spec->size == sizeof(*spec)); + + mac = special_flow_init[flow_type].dst_mac_val; + mask = special_flow_init[flow_type].dst_mac_mask; + *spec = (struct ibv_exp_flow_spec_eth){ + .type = IBV_EXP_FLOW_SPEC_ETH, + .size = sizeof(*spec), + .val = { + .dst_mac = { + mac[0], mac[1], mac[2], + mac[3], mac[4], mac[5], + }, + }, + .mask = { + .dst_mac = { + mask[0], mask[1], mask[2], + mask[3], mask[4], mask[5], + }, + }, + }; + errno = 0; flow = ibv_exp_create_flow(hash_rxq->qp, attr); if (flow == NULL) { @@ -94,44 +159,89 @@ hash_rxq_promiscuous_enable(struct hash_rxq *hash_rxq) return errno; return EINVAL; } - hash_rxq->promisc_flow = flow; - DEBUG("%p: promiscuous mode enabled", (void *)hash_rxq); + hash_rxq->special_flow[flow_type] = flow; + DEBUG("%p: enabling special flow %s (%d)", + (void *)hash_rxq, hash_rxq_flow_type_str(flow_type), flow_type); return 0; } /** - * Enable promiscuous mode in all hash RX queues. + * Disable a special flow in a hash RX queue. + * + * @param hash_rxq + * Pointer to hash RX queue structure. + * @param flow_type + * Special flow type. + */ +static void +hash_rxq_special_flow_disable(struct hash_rxq *hash_rxq, + enum hash_rxq_flow_type flow_type) +{ + if (hash_rxq->special_flow[flow_type] == NULL) + return; + DEBUG("%p: disabling special flow %s (%d)", + (void *)hash_rxq, hash_rxq_flow_type_str(flow_type), flow_type); + claim_zero(ibv_exp_destroy_flow(hash_rxq->special_flow[flow_type])); + hash_rxq->special_flow[flow_type] = NULL; + DEBUG("%p: special flow %s (%d) disabled", + (void *)hash_rxq, hash_rxq_flow_type_str(flow_type), flow_type); +} + +/** + * Enable a special flow in all hash RX queues. * * @param priv * Private structure. + * @param flow_type + * Special flow type. * * @return * 0 on success, errno value on failure. */ int -priv_promiscuous_enable(struct priv *priv) +priv_special_flow_enable(struct priv *priv, enum hash_rxq_flow_type flow_type) { unsigned int i; - if (!priv_allow_flow_type(priv, HASH_RXQ_FLOW_TYPE_PROMISC)) + if (!priv_allow_flow_type(priv, flow_type)) return 0; for (i = 0; (i != priv->hash_rxqs_n); ++i) { struct hash_rxq *hash_rxq = &(*priv->hash_rxqs)[i]; int ret; - ret = hash_rxq_promiscuous_enable(hash_rxq); + ret = hash_rxq_special_flow_enable(hash_rxq, flow_type); if (!ret) continue; /* Failure, rollback. */ while (i != 0) { hash_rxq = &(*priv->hash_rxqs)[--i]; - hash_rxq_promiscuous_disable(hash_rxq); + hash_rxq_special_flow_disable(hash_rxq, flow_type); } return ret; } return 0; } +/** + * Disable a special flow in all hash RX queues. + * + * @param priv + * Private structure. + * @param flow_type + * Special flow type. + */ +void +priv_special_flow_disable(struct priv *priv, enum hash_rxq_flow_type flow_type) +{ + unsigned int i; + + for (i = 0; (i != priv->hash_rxqs_n); ++i) { + struct hash_rxq *hash_rxq = &(*priv->hash_rxqs)[i]; + + hash_rxq_special_flow_disable(hash_rxq, flow_type); + } +} + /** * DPDK callback to enable promiscuous mode. * @@ -146,48 +256,13 @@ mlx5_promiscuous_enable(struct rte_eth_dev *dev) priv_lock(priv); priv->promisc_req = 1; - ret = priv_promiscuous_enable(priv); + ret = priv_rehash_flows(priv); if (ret) - ERROR("cannot enable promiscuous mode: %s", strerror(ret)); - else { - priv_mac_addrs_disable(priv); - priv_allmulticast_disable(priv); - } + ERROR("error while enabling promiscuous mode: %s", + strerror(ret)); priv_unlock(priv); } -/** - * Disable promiscuous mode in a hash RX queue. - * - * @param hash_rxq - * Pointer to hash RX queue structure. - */ -static void -hash_rxq_promiscuous_disable(struct hash_rxq *hash_rxq) -{ - if (hash_rxq->promisc_flow == NULL) - return; - DEBUG("%p: disabling promiscuous mode", (void *)hash_rxq); - claim_zero(ibv_exp_destroy_flow(hash_rxq->promisc_flow)); - hash_rxq->promisc_flow = NULL; - DEBUG("%p: promiscuous mode disabled", (void *)hash_rxq); -} - -/** - * Disable promiscuous mode in all hash RX queues. - * - * @param priv - * Private structure. - */ -void -priv_promiscuous_disable(struct priv *priv) -{ - unsigned int i; - - for (i = 0; (i != priv->hash_rxqs_n); ++i) - hash_rxq_promiscuous_disable(&(*priv->hash_rxqs)[i]); -} - /** * DPDK callback to disable promiscuous mode. * @@ -198,104 +273,17 @@ void mlx5_promiscuous_disable(struct rte_eth_dev *dev) { struct priv *priv = dev->data->dev_private; + int ret; priv_lock(priv); priv->promisc_req = 0; - priv_promiscuous_disable(priv); - priv_mac_addrs_enable(priv); - priv_allmulticast_enable(priv); + ret = priv_rehash_flows(priv); + if (ret) + ERROR("error while disabling promiscuous mode: %s", + strerror(ret)); priv_unlock(priv); } -/** - * Enable allmulti mode in a hash RX queue. - * - * @param hash_rxq - * Pointer to hash RX queue structure. - * - * @return - * 0 on success, errno value on failure. - */ -static int -hash_rxq_allmulticast_enable(struct hash_rxq *hash_rxq) -{ - struct ibv_exp_flow *flow; - FLOW_ATTR_SPEC_ETH(data, hash_rxq_flow_attr(hash_rxq, NULL, 0)); - struct ibv_exp_flow_attr *attr = &data->attr; - struct ibv_exp_flow_spec_eth *spec = &data->spec; - - if (hash_rxq->allmulti_flow != NULL) - return 0; - DEBUG("%p: enabling allmulticast mode", (void *)hash_rxq); - /* - * No padding must be inserted by the compiler between attr and spec. - * This layout is expected by libibverbs. - */ - assert(((uint8_t *)attr + sizeof(*attr)) == (uint8_t *)spec); - hash_rxq_flow_attr(hash_rxq, attr, sizeof(data)); - *spec = (struct ibv_exp_flow_spec_eth){ - .type = IBV_EXP_FLOW_SPEC_ETH, - .size = sizeof(*spec), - .val = { - .dst_mac = "\x01\x00\x00\x00\x00\x00", - }, - .mask = { - .dst_mac = "\x01\x00\x00\x00\x00\x00", - }, - }; - errno = 0; - flow = ibv_exp_create_flow(hash_rxq->qp, attr); - if (flow == NULL) { - /* It's not clear whether errno is always set in this case. */ - ERROR("%p: flow configuration failed, errno=%d: %s", - (void *)hash_rxq, errno, - (errno ? strerror(errno) : "Unknown error")); - if (errno) - return errno; - return EINVAL; - } - hash_rxq->allmulti_flow = flow; - DEBUG("%p: allmulticast mode enabled", (void *)hash_rxq); - return 0; -} - -/** - * Enable allmulti mode in most hash RX queues. - * TCP queues are exempted to save resources. - * - * @param priv - * Private structure. - * - * @return - * 0 on success, errno value on failure. - */ -int -priv_allmulticast_enable(struct priv *priv) -{ - unsigned int i; - - if (!priv_allow_flow_type(priv, HASH_RXQ_FLOW_TYPE_ALLMULTI)) - return 0; - for (i = 0; (i != priv->hash_rxqs_n); ++i) { - struct hash_rxq *hash_rxq = &(*priv->hash_rxqs)[i]; - int ret; - - /* allmulticast not relevant for TCP. */ - if (hash_rxq->type == HASH_RXQ_TCPV4) - continue; - ret = hash_rxq_allmulticast_enable(hash_rxq); - if (!ret) - continue; - /* Failure, rollback. */ - while (i != 0) { - hash_rxq = &(*priv->hash_rxqs)[--i]; - hash_rxq_allmulticast_disable(hash_rxq); - } - return ret; - } - return 0; -} - /** * DPDK callback to enable allmulti mode. * @@ -310,44 +298,13 @@ mlx5_allmulticast_enable(struct rte_eth_dev *dev) priv_lock(priv); priv->allmulti_req = 1; - ret = priv_allmulticast_enable(priv); + ret = priv_rehash_flows(priv); if (ret) - ERROR("cannot enable allmulticast mode: %s", strerror(ret)); + ERROR("error while enabling allmulticast mode: %s", + strerror(ret)); priv_unlock(priv); } -/** - * Disable allmulti mode in a hash RX queue. - * - * @param hash_rxq - * Pointer to hash RX queue structure. - */ -static void -hash_rxq_allmulticast_disable(struct hash_rxq *hash_rxq) -{ - if (hash_rxq->allmulti_flow == NULL) - return; - DEBUG("%p: disabling allmulticast mode", (void *)hash_rxq); - claim_zero(ibv_exp_destroy_flow(hash_rxq->allmulti_flow)); - hash_rxq->allmulti_flow = NULL; - DEBUG("%p: allmulticast mode disabled", (void *)hash_rxq); -} - -/** - * Disable allmulti mode in all hash RX queues. - * - * @param priv - * Private structure. - */ -void -priv_allmulticast_disable(struct priv *priv) -{ - unsigned int i; - - for (i = 0; (i != priv->hash_rxqs_n); ++i) - hash_rxq_allmulticast_disable(&(*priv->hash_rxqs)[i]); -} - /** * DPDK callback to disable allmulti mode. * @@ -358,9 +315,13 @@ void mlx5_allmulticast_disable(struct rte_eth_dev *dev) { struct priv *priv = dev->data->dev_private; + int ret; priv_lock(priv); priv->allmulti_req = 0; - priv_allmulticast_disable(priv); + ret = priv_rehash_flows(priv); + if (ret) + ERROR("error while disabling allmulticast mode: %s", + strerror(ret)); priv_unlock(priv); } diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c index ebbe186d96..166516a4e4 100644 --- a/drivers/net/mlx5/mlx5_rxq.c +++ b/drivers/net/mlx5/mlx5_rxq.c @@ -534,8 +534,8 @@ priv_destroy_hash_rxqs(struct priv *priv) assert(hash_rxq->priv == priv); assert(hash_rxq->qp != NULL); /* Also check that there are no remaining flows. */ - assert(hash_rxq->allmulti_flow == NULL); - assert(hash_rxq->promisc_flow == NULL); + for (j = 0; (j != RTE_DIM(hash_rxq->special_flow)); ++j) + assert(hash_rxq->special_flow[j] == 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); @@ -585,6 +585,35 @@ priv_allow_flow_type(struct priv *priv, enum hash_rxq_flow_type type) return 0; } +/** + * Automatically enable/disable flows according to configuration. + * + * @param priv + * Private structure. + * + * @return + * 0 on success, errno value on failure. + */ +int +priv_rehash_flows(struct priv *priv) +{ + unsigned int i; + + for (i = 0; (i != RTE_DIM((*priv->hash_rxqs)[0].special_flow)); ++i) + if (!priv_allow_flow_type(priv, i)) { + priv_special_flow_disable(priv, i); + } else { + int ret = priv_special_flow_enable(priv, i); + + if (ret) + return ret; + } + if (priv_allow_flow_type(priv, HASH_RXQ_FLOW_TYPE_MAC)) + return priv_mac_addrs_enable(priv); + priv_mac_addrs_disable(priv); + return 0; +} + /** * Allocate RX queue elements with scattered packets support. * diff --git a/drivers/net/mlx5/mlx5_rxtx.h b/drivers/net/mlx5/mlx5_rxtx.h index e1e1925105..983e6a45a8 100644 --- a/drivers/net/mlx5/mlx5_rxtx.h +++ b/drivers/net/mlx5/mlx5_rxtx.h @@ -176,20 +176,42 @@ struct ind_table_init { unsigned int hash_types_n; }; +/* Initialization data for special flows. */ +struct special_flow_init { + uint8_t dst_mac_val[6]; + uint8_t dst_mac_mask[6]; + unsigned int hash_types; +}; + enum hash_rxq_flow_type { - HASH_RXQ_FLOW_TYPE_MAC, HASH_RXQ_FLOW_TYPE_PROMISC, HASH_RXQ_FLOW_TYPE_ALLMULTI, + HASH_RXQ_FLOW_TYPE_MAC, }; +#ifndef NDEBUG +static inline const char * +hash_rxq_flow_type_str(enum hash_rxq_flow_type flow_type) +{ + switch (flow_type) { + case HASH_RXQ_FLOW_TYPE_PROMISC: + return "promiscuous"; + case HASH_RXQ_FLOW_TYPE_ALLMULTI: + return "allmulticast"; + case HASH_RXQ_FLOW_TYPE_MAC: + return "MAC"; + } + return NULL; +} +#endif /* NDEBUG */ + struct hash_rxq { struct priv *priv; /* Back pointer to private data. */ struct ibv_qp *qp; /* Hash RX QP. */ enum hash_rxq_type type; /* Hash RX queue type. */ /* MAC flow steering rules, one per VLAN ID. */ struct ibv_exp_flow *mac_flow[MLX5_MAX_MAC_ADDRESSES][MLX5_MAX_VLAN_IDS]; - struct ibv_exp_flow *promisc_flow; /* Promiscuous flow. */ - struct ibv_exp_flow *allmulti_flow; /* Multicast flow. */ + struct ibv_exp_flow *special_flow[MLX5_MAX_SPECIAL_FLOWS]; }; /* TX element. */ @@ -247,6 +269,7 @@ size_t hash_rxq_flow_attr(const struct hash_rxq *, struct ibv_exp_flow_attr *, int priv_create_hash_rxqs(struct priv *); void priv_destroy_hash_rxqs(struct priv *); int priv_allow_flow_type(struct priv *, enum hash_rxq_flow_type); +int priv_rehash_flows(struct priv *); void rxq_cleanup(struct rxq *); int rxq_rehash(struct rte_eth_dev *, struct rxq *); int rxq_setup(struct rte_eth_dev *, struct rxq *, uint16_t, unsigned int, diff --git a/drivers/net/mlx5/mlx5_trigger.c b/drivers/net/mlx5/mlx5_trigger.c index ff1203d7ae..d9f7d00d2f 100644 --- a/drivers/net/mlx5/mlx5_trigger.c +++ b/drivers/net/mlx5/mlx5_trigger.c @@ -72,11 +72,7 @@ mlx5_dev_start(struct rte_eth_dev *dev) DEBUG("%p: allocating and configuring hash RX queues", (void *)dev); err = priv_create_hash_rxqs(priv); if (!err) - err = priv_promiscuous_enable(priv); - if (!err) - err = priv_mac_addrs_enable(priv); - if (!err) - err = priv_allmulticast_enable(priv); + err = priv_rehash_flows(priv); if (!err) priv->started = 1; else { @@ -84,8 +80,8 @@ mlx5_dev_start(struct rte_eth_dev *dev) " %s", (void *)priv, strerror(err)); /* Rollback. */ - priv_allmulticast_disable(priv); - priv_promiscuous_disable(priv); + priv_special_flow_disable(priv, HASH_RXQ_FLOW_TYPE_ALLMULTI); + priv_special_flow_disable(priv, HASH_RXQ_FLOW_TYPE_PROMISC); priv_mac_addrs_disable(priv); priv_destroy_hash_rxqs(priv); } @@ -113,8 +109,8 @@ mlx5_dev_stop(struct rte_eth_dev *dev) return; } DEBUG("%p: cleaning up and destroying hash RX queues", (void *)dev); - priv_allmulticast_disable(priv); - priv_promiscuous_disable(priv); + priv_special_flow_disable(priv, HASH_RXQ_FLOW_TYPE_ALLMULTI); + priv_special_flow_disable(priv, HASH_RXQ_FLOW_TYPE_PROMISC); priv_mac_addrs_disable(priv); priv_destroy_hash_rxqs(priv); priv_dev_interrupt_handler_uninstall(priv, dev); -- 2.20.1