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Commit dfec0ee2 authored by Alexander Duyck's avatar Alexander Duyck Committed by David S. Miller
Browse files

udp: Record gso_segs when supporting UDP segmentation offload 



We need to record the number of segments that will be generated when this
frame is segmented. The expectation is that if gso_size is set then
gso_segs is set as well. Without this some drivers such as ixgbe get
confused if they attempt to offload this as they record 0 segments for the
entire packet instead of the correct value.

Reviewed-by: default avatarEric Dumazet <edumazet@google.com>
Acked-by: default avatarWillem de Bruijn <willemb@google.com>
Signed-off-by: default avatarAlexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 53a7bdfb

net/ipv4/udp.c

+2 −0
Original line number Diff line number Diff line
@@ -793,6 +793,8 @@ static int udp_send_skb(struct sk_buff *skb, struct flowi4 *fl4, 


		skb_shinfo(skb)->gso_size = cork->gso_size;

		skb_shinfo(skb)->gso_type = SKB_GSO_UDP_L4;

		skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(len - sizeof(uh),

							 cork->gso_size);

		goto csum_partial;

	}