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udp: enable UDP checksum offload for ESP 

In case NIC has support for ESP TX CSUM offload skb->ip_summed is not
set to CHECKSUM_PARTIAL which results in checksum calculated by SW.

Fix enables ESP TX CSUM for UDP by extending condition with check for
NETIF_F_HW_ESP_TX_CSUM.

Signed-off-by: Jacek Kalwas <jacek.kalwas@intel.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Jacek Kalwas 2018-04-12 12:03:13 -07:00 committed by Steffen Klassert
parent 5e596ee171
commit cd027a5433
1 changed files with 1 additions and 1 deletions
net/ipv4
ip_output.c

2
net/ipv4/ip_output.c
View File

@ -907,7 +907,7 @@ static int __ip_append_data(struct sock *sk,
length + fragheaderlen <= mtu && length + fragheaderlen <= mtu &&
rt->dst.dev->features & (NETIF_F_HW_CSUM | NETIF_F_IP_CSUM) && rt->dst.dev->features & (NETIF_F_HW_CSUM | NETIF_F_IP_CSUM) &&
!(flags & MSG_MORE) && !(flags & MSG_MORE) &&
!exthdrlen) (!exthdrlen || (rt->dst.dev->features & NETIF_F_HW_ESP_TX_CSUM)))
csummode = CHECKSUM_PARTIAL; csummode = CHECKSUM_PARTIAL;
cork->length += length; cork->length += length;