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authorHans Westgaard Ry <hans.westgaard.ry@oracle.com>2016-02-03 09:26:57 +0100
committerDavid S. Miller <davem@davemloft.net>2016-02-09 04:28:06 -0500
commit5f74f82ea34c0da80ea0b49192bb5ea06e063593 (patch)
treed0c5e30a637a99cb780e47193167c3a8aa655659 /include/linux/skbuff.h
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 <hans.westgaard.ry@oracle.com> Reviewed-by: HÃ¥kon Bugge <haakon.bugge@oracle.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/skbuff.h')
-rw-r--r--include/linux/skbuff.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 11f935c1a090..4ce9ff7086f4 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -299,6 +299,7 @@ struct sk_buff;
#else
#define MAX_SKB_FRAGS (65536/PAGE_SIZE + 1)
#endif
+extern int sysctl_max_skb_frags;
typedef struct skb_frag_struct skb_frag_t;