path: root/net/core/skbuff.c
diff options
authorHans Westgaard Ry <>2016-02-03 09:26:57 +0100
committerDavid S. Miller <>2016-02-09 04:28:06 -0500
commit5f74f82ea34c0da80ea0b49192bb5ea06e063593 (patch)
treed0c5e30a637a99cb780e47193167c3a8aa655659 /net/core/skbuff.c
parent9cf7490360bf2c46a16b7525f899e4970c5fc144 (diff)
net:Add sysctl_max_skb_frags
Devices may have limits on the number of fragments in an skb they support. Current codebase uses a constant as maximum for number of fragments one skb can hold and use. When enabling scatter/gather and running traffic with many small messages the codebase uses the maximum number of fragments and may thereby violate the max for certain devices. The patch introduces a global variable as max number of fragments. Signed-off-by: Hans Westgaard Ry <> Reviewed-by: HÃ¥kon Bugge <> Acked-by: Eric Dumazet <> Signed-off-by: David S. Miller <>
Diffstat (limited to 'net/core/skbuff.c')
1 files changed, 2 insertions, 0 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index b2df375ec9c2..5bf88f58bee7 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -79,6 +79,8 @@
struct kmem_cache *skbuff_head_cache __read_mostly;
static struct kmem_cache *skbuff_fclone_cache __read_mostly;
+int sysctl_max_skb_frags __read_mostly = MAX_SKB_FRAGS;
* skb_panic - private function for out-of-line support