diff options
| author | Hans Westgaard Ry <hans.westgaard.ry@oracle.com> | 2016-02-03 09:26:57 +0100 |
|---|---|---|
| committer | Luis Henriques <luis.henriques@canonical.com> | 2016-03-24 10:00:44 +0000 |
| commit | 1f3c2130941ac194a3f78e80c65cc73b64c2a2df (patch) | |
| tree | 2ea28b8ecb42745ca21d4ea5bb90d38172a805b6 /include/linux | |
| parent | efd019f933a538e4147aee811e6b2dd7a1aafdef (diff) | |
net:Add sysctl_max_skb_frags
commit 5f74f82ea34c0da80ea0b49192bb5ea06e063593 upstream.
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>
[ luis: backported to 3.16: adjusted context ]
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Diffstat (limited to 'include/linux')
| -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 010bc80be91c..c046cb92172e 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -169,6 +169,7 @@ 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; |