path: root/net/ipv4/udp.c
diff options
authorAlexander Duyck <alexander.h.duyck@intel.com>2018-05-07 11:08:22 -0700
committerDavid S. Miller <davem@davemloft.net>2018-05-08 22:30:05 -0400
commitdfec0ee22c0a4488e4f4c764b2720d3096920383 (patch)
tree42f86b2a8e499b72818c3f3f0a548b1342452e3f /net/ipv4/udp.c
parentdt-bindings: dsa: Remove unnecessary #address/#size-cells (diff)
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 <edumazet@google.com> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/udp.c')
1 files changed, 2 insertions, 0 deletions
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;