[dpdk-dev] [PATCH] net/mlx5: match on TCP flags via DV/DR engine

Jack Min jackmin at mellanox.com
Mon May 27 04:35:22 CEST 2019


On Mon, 19-05-27, 03:20, Shahaf Shuler wrote:
> 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:
Thank you, shahaf.

> 1. Your author name is not the same as your signed-of name. please take
> care.
It seems the MS exchange mangled my email name...

> 2. fixed some identation issues
> 3. modifed the title. please have a look.
Ok. 

> 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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