From dfec0ee22c0a4488e4f4c764b2720d3096920383 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Mon, 7 May 2018 11:08:22 -0700 Subject: 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: Eric Dumazet Acked-by: Willem de Bruijn Signed-off-by: Alexander Duyck Signed-off-by: David S. Miller --- net/ipv4/udp.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'net/ipv4/udp.c') diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index dd3102a37ef9..e07db83b311e 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -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; } -- cgit v1.2.3-59-g8ed1b