Commit cd027a54 authored Apr 12, 2018 by Jacek Kalwas Committed by Steffen Klassert Apr 18, 2018

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>

parent 5e596ee1

net/ipv4/ip_output.c

+1 −1

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

		cork->length += length;

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