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| author |   Hans Westgaard Ry <hans.westgaard.ry@oracle.com> | 2016-02-03 09:26:57 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-02-09 04:28:06 -0500 |
| commit | 5f74f82ea34c0da80ea0b49192bb5ea06e063593 (patch) | |
| tree | d0c5e30a637a99cb780e47193167c3a8aa655659 /include | |
| parent | tcp: do not drop syn_recv on all icmp reports (diff) | |
| download | linux-dev-5f74f82ea34c0da80ea0b49192bb5ea06e063593.tar.xz linux-dev-5f74f82ea34c0da80ea0b49192bb5ea06e063593.zip | |
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: Håkon 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')
| -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 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; |