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| author | Hans Westgaard Ry <hans.westgaard.ry@oracle.com> | 2016-02-03 11:26:57 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-02-08 11:43:05 +0300 |
| commit | df93393787a3fc3b994c5061a890b0250bae0fbc (patch) | |
| tree | 8a971649ccb5573fcb38204db242baa00b374cfe /include | |
| parent | 1115c5f029831fd3a9f447094069bb01802418a1 (diff) | |
| download | linux-df93393787a3fc3b994c5061a890b0250bae0fbc.tar.xz | |
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 3b57c6712495..2ff757f2d3a3 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -188,6 +188,7 @@ 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; |