From: Eli Britstein <elibr@mellanox.com>
Date: Sun, 3 May 2020 10:47:55 +0000 (+0000)
Subject: net/mlx5: optimize IPv4/IPv6 matching
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=6030e1d452e21d728f3f875a25f80bd714fd5273;p=dpdk.git
net/mlx5: optimize IPv4/IPv6 matching
The HW is optimized for IPv4/IPv6. For such cases avoid matching on
ethertype, and use ip_version field instead.
Signed-off-by: Eli Britstein <elibr@mellanox.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
Acked-by: Matan Azrad <matan@mellanox.com>
---
diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index f388ab9f92..aa5c353a3b 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -5635,6 +5635,8 @@ flow_dv_set_match_ip_version(uint32_t group,
MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_version,
ip_version);
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_version, ip_version);
+ MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, 0);
+ MLX5_SET(fte_match_set_lyr_2_4, headers_m, ethertype, 0);
}
/**
@@ -5651,7 +5653,8 @@ flow_dv_set_match_ip_version(uint32_t group,
*/
static void
flow_dv_translate_item_eth(void *matcher, void *key,
- const struct rte_flow_item *item, int inner)
+ const struct rte_flow_item *item, int inner,
+ uint32_t group)
{
const struct rte_flow_item_eth *eth_m = item->mask;
const struct rte_flow_item_eth *eth_v = item->spec;
@@ -5706,11 +5709,22 @@ flow_dv_translate_item_eth(void *matcher, void *key,
* HW supports match on one Ethertype, the Ethertype following the last
* VLAN tag of the packet (see PRM).
* Set match on ethertype only if ETH header is not followed by VLAN.
+ * HW is optimized for IPv4/IPv6. In such cases, avoid setting
+ * ethertype, and use ip_version field instead.
*/
- MLX5_SET(fte_match_set_lyr_2_4, headers_m, ethertype,
- rte_be_to_cpu_16(eth_m->type));
- l24_v = MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, ethertype);
- *(uint16_t *)(l24_v) = eth_m->type & eth_v->type;
+ if (eth_v->type == RTE_BE16(RTE_ETHER_TYPE_IPV4) &&
+ eth_m->type == 0xFFFF) {
+ flow_dv_set_match_ip_version(group, headers_v, headers_m, 4);
+ } else if (eth_v->type == RTE_BE16(RTE_ETHER_TYPE_IPV6) &&
+ eth_m->type == 0xFFFF) {
+ flow_dv_set_match_ip_version(group, headers_v, headers_m, 6);
+ } else {
+ MLX5_SET(fte_match_set_lyr_2_4, headers_m, ethertype,
+ rte_be_to_cpu_16(eth_m->type));
+ l24_v = MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
+ ethertype);
+ *(uint16_t *)(l24_v) = eth_m->type & eth_v->type;
+ }
}
/**
@@ -5731,7 +5745,7 @@ static void
flow_dv_translate_item_vlan(struct mlx5_flow *dev_flow,
void *matcher, void *key,
const struct rte_flow_item *item,
- int inner)
+ int inner, uint32_t group)
{
const struct rte_flow_item_vlan *vlan_m = item->mask;
const struct rte_flow_item_vlan *vlan_v = item->spec;
@@ -5769,10 +5783,23 @@ flow_dv_translate_item_vlan(struct mlx5_flow *dev_flow,
MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_cfi, tci_v >> 12);
MLX5_SET(fte_match_set_lyr_2_4, headers_m, first_prio, tci_m >> 13);
MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, tci_v >> 13);
- MLX5_SET(fte_match_set_lyr_2_4, headers_m, ethertype,
- rte_be_to_cpu_16(vlan_m->inner_type));
- MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
- rte_be_to_cpu_16(vlan_m->inner_type & vlan_v->inner_type));
+ /*
+ * HW is optimized for IPv4/IPv6. In such cases, avoid setting
+ * ethertype, and use ip_version field instead.
+ */
+ if (vlan_v->inner_type == RTE_BE16(RTE_ETHER_TYPE_IPV4) &&
+ vlan_m->inner_type == 0xFFFF) {
+ flow_dv_set_match_ip_version(group, headers_v, headers_m, 4);
+ } else if (vlan_v->inner_type == RTE_BE16(RTE_ETHER_TYPE_IPV6) &&
+ vlan_m->inner_type == 0xFFFF) {
+ flow_dv_set_match_ip_version(group, headers_v, headers_m, 6);
+ } else {
+ MLX5_SET(fte_match_set_lyr_2_4, headers_m, ethertype,
+ rte_be_to_cpu_16(vlan_m->inner_type));
+ MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
+ rte_be_to_cpu_16(vlan_m->inner_type &
+ vlan_v->inner_type));
+ }
}
/**
@@ -8155,7 +8182,8 @@ __flow_dv_translate(struct rte_eth_dev *dev,
break;
case RTE_FLOW_ITEM_TYPE_ETH:
flow_dv_translate_item_eth(match_mask, match_value,
- items, tunnel);
+ items, tunnel,
+ dev_flow->dv.group);
matcher.priority = MLX5_PRIORITY_MAP_L2;
last_item = tunnel ? MLX5_FLOW_LAYER_INNER_L2 :
MLX5_FLOW_LAYER_OUTER_L2;
@@ -8163,7 +8191,8 @@ __flow_dv_translate(struct rte_eth_dev *dev,
case RTE_FLOW_ITEM_TYPE_VLAN:
flow_dv_translate_item_vlan(dev_flow,
match_mask, match_value,
- items, tunnel);
+ items, tunnel,
+ dev_flow->dv.group);
matcher.priority = MLX5_PRIORITY_MAP_L2;
last_item = tunnel ? (MLX5_FLOW_LAYER_INNER_L2 |
MLX5_FLOW_LAYER_INNER_VLAN) :