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| author | Hans Westgaard Ry <hans.westgaard.ry@oracle.com> | 2016-02-03 09:26:57 +0100 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-03-04 10:25:49 -0500 |
| commit | 3faf465445a1d8677b860eee894aecc3d2e32cc6 (patch) | |
| tree | a1369f2ba768c537160d70005ce12e97fc782724 /include | |
| parent | 797c009c98dbb21127a2549d1106ed19d18661cf (diff) | |
| download | lwn-3faf465445a1d8677b860eee894aecc3d2e32cc6.tar.gz lwn-3faf465445a1d8677b860eee894aecc3d2e32cc6.zip | |
net:Add sysctl_max_skb_frags
[ Upstream commit 5f74f82ea34c0da80ea0b49192bb5ea06e063593 ]
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: Håkon Bugge <haakon.bugge@oracle.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/skbuff.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 1f17abe23725..6633b0cd3fb9 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -203,6 +203,7 @@ 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; |