[dpdk-dev] [PATCH] net/mlx5: match on TCP flags via DV/DR engine
Shahaf Shuler
shahafs at mellanox.com
Sun May 26 21:20:53 CEST 2019
From: Jack Min <jackmin at mellanox.com>
>Add support to match all TCP control bits (flags)
>except "NS (ECN-nonce)" via Direct Verbs (DV) or Direct Rule (DR)
>engine.
>
>Signed-off-by: Xiaoyu Min <jackmin at mellanox.com>
>Acked-by: Ori Kam <orika at mellanox.com>
Applied to next-net-mlx, with few points to address:
1. Your author name is not the same as your signed-of name. please take
care.
2. fixed some identation issues
3. modifed the title. please have a look.
thanks.
>---
> drivers/net/mlx5/mlx5_flow_dv.c | 12 +++++++++++-
> 1 file changed, 11 insertions(+), 1 deletion(-)
>
>diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
>index cf255ca95c..44b4f40404 100644
>--- a/drivers/net/mlx5/mlx5_flow_dv.c
>+++ b/drivers/net/mlx5/mlx5_flow_dv.c
>@@ -2066,6 +2066,12 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
> uint64_t last_item = 0;
> uint8_t next_protocol = 0xff;
> int actions_n = 0;
>+ struct rte_flow_item_tcp nic_tcp_mask = {
>+ .hdr = { .tcp_flags = 0xFF,
>+ .src_port = RTE_BE16(UINT16_MAX),
>+ .dst_port = RTE_BE16(UINT16_MAX),
>+ }
>+ };
>
> if (items == NULL)
> return -1;
>@@ -2146,7 +2152,7 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
> ret = mlx5_flow_validate_item_tcp
> (items, item_flags,
> next_protocol,
>- &rte_flow_item_tcp_mask,
>+ &nic_tcp_mask,
> error);
> if (ret < 0)
> return ret;
>@@ -2862,6 +2868,10 @@ flow_dv_translate_item_tcp(void *matcher, void *key,
> rte_be_to_cpu_16(tcp_m->hdr.dst_port));
> MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_dport,
> rte_be_to_cpu_16(tcp_v->hdr.dst_port & tcp_m->hdr.dst_port));
>+ MLX5_SET(fte_match_set_lyr_2_4, headers_m, tcp_flags,
>+ tcp_m->hdr.tcp_flags);
>+ MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags,
>+ (tcp_v->hdr.tcp_flags & tcp_m->hdr.tcp_flags));
> }
>
> /**
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