From: Saeed Mahameed <saeedm@mellanox.com>
To: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org, Gal Pressman <galp@mellanox.com>,
Saeed Mahameed <saeedm@mellanox.com>
Subject: [net 05/14] net/mlx5e: Fix features check of IPv6 traffic
Date: Wed, 20 Dec 2017 00:24:47 +0200 [thread overview]
Message-ID: <20171219222456.29627-6-saeedm@mellanox.com> (raw)
In-Reply-To: <20171219222456.29627-1-saeedm@mellanox.com>
From: Gal Pressman <galp@mellanox.com>
The assumption that the next header field contains the transport
protocol is wrong for IPv6 packets with extension headers.
Instead, we should look the inner-most next header field in the buffer.
This will fix TSO offload for tunnels over IPv6 with extension headers.
Performance testing: 19.25x improvement, cool!
Measuring bandwidth of 16 threads TCP traffic over IPv6 GRE tap.
CPU: Intel(R) Xeon(R) CPU E5-2660 v2 @ 2.20GHz
NIC: Mellanox Technologies MT28800 Family [ConnectX-5 Ex]
TSO: Enabled
Before: 4,926.24 Mbps
Now : 94,827.91 Mbps
Fixes: b3f63c3d5e2c ("net/mlx5e: Add netdev support for VXLAN tunneling")
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
---
drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index cbec66bc82f1..c535a44ab8ac 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -3678,6 +3678,7 @@ static netdev_features_t mlx5e_tunnel_features_check(struct mlx5e_priv *priv,
struct sk_buff *skb,
netdev_features_t features)
{
+ unsigned int offset = 0;
struct udphdr *udph;
u8 proto;
u16 port;
@@ -3687,7 +3688,7 @@ static netdev_features_t mlx5e_tunnel_features_check(struct mlx5e_priv *priv,
proto = ip_hdr(skb)->protocol;
break;
case htons(ETH_P_IPV6):
- proto = ipv6_hdr(skb)->nexthdr;
+ proto = ipv6_find_hdr(skb, &offset, -1, NULL, NULL);
break;
default:
goto out;
--
2.13.0
next prev parent reply other threads:[~2017-12-19 22:28 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-19 22:24 [pull request][net 00/14] Mellanox, mlx5 fixes 2017-12-19 Saeed Mahameed
2017-12-19 22:24 ` [net 01/14] net/mlx5: FPGA, return -EINVAL if size is zero Saeed Mahameed
2017-12-19 22:24 ` [net 02/14] Revert "mlx5: move affinity hints assignments to generic code" Saeed Mahameed
2017-12-19 22:42 ` Jes Sorensen
2017-12-25 13:53 ` Sagi Grimberg
2017-12-26 15:58 ` Saeed Mahameed
2017-12-26 17:14 ` Sagi Grimberg
2018-01-04 20:19 ` Saeed Mahameed
2017-12-19 22:24 ` [net 03/14] net/mlx5: Fix rate limit packet pacing naming and struct Saeed Mahameed
2017-12-19 22:24 ` [net 04/14] net/mlx5e: Fix ETS BW check Saeed Mahameed
2017-12-20 7:42 ` Or Gerlitz
2017-12-19 22:24 ` Saeed Mahameed [this message]
2017-12-20 7:45 ` [net 05/14] net/mlx5e: Fix features check of IPv6 traffic Or Gerlitz
2017-12-19 22:24 ` [net 06/14] net/mlx5e: Fix defaulting RX ring size when not needed Saeed Mahameed
2017-12-19 22:24 ` [net 07/14] net/mlx5: Fix misspelling in the error message and comment Saeed Mahameed
2017-12-19 22:24 ` [net 08/14] net/mlx5: Fix error flow in CREATE_QP command Saeed Mahameed
2017-12-19 22:24 ` [net 09/14] net/mlx5e: Fix possible deadlock of VXLAN lock Saeed Mahameed
2017-12-19 22:24 ` [net 10/14] net/mlx5e: Add refcount to VXLAN structure Saeed Mahameed
2017-12-19 22:24 ` [net 11/14] net/mlx5e: Prevent possible races in VXLAN control flow Saeed Mahameed
2017-12-19 22:24 ` [net 12/14] net/mlx5: Fix steering memory leak Saeed Mahameed
2017-12-19 22:24 ` [net 13/14] net/mlx5: Cleanup IRQs in case of unload failure Saeed Mahameed
2017-12-19 22:24 ` [net 14/14] net/mlx5: Stay in polling mode when command EQ destroy fails Saeed Mahameed
2017-12-20 18:42 ` [pull request][net 00/14] Mellanox, mlx5 fixes 2017-12-19 David Miller
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