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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2009-08-16 09:36:49 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-08-17 21:33:49 -0700 |
| commit | c1a8f1f1c8e01eab5862c8db39b49ace814e6c66 (patch) | |
| tree | 0679f709f70d9a91850888636a28adb79940c402 /include/linux | |
| parent | c6ba973b8fa97422aab4204f7d79f1d413cde925 (diff) | |
| download | blackbird-op-linux-c1a8f1f1c8e01eab5862c8db39b49ace814e6c66.tar.gz blackbird-op-linux-c1a8f1f1c8e01eab5862c8db39b49ace814e6c66.zip | |
net: restore gnet_stats_basic to previous definition
In 5e140dfc1fe87eae27846f193086724806b33c7d "net: reorder struct Qdisc
for better SMP performance" the definition of struct gnet_stats_basic
changed incompatibly, as copies of this struct are shipped to
userland via netlink.
Restoring old behavior is not welcome, for performance reason.
Fix is to use a private structure for kernel, and
teach gnet_stats_copy_basic() to convert from kernel to user land,
using legacy structure (struct gnet_stats_basic)
Based on a report and initial patch from Michael Spang.
Reported-by: Michael Spang <mspang@csclub.uwaterloo.ca>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/gen_stats.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/gen_stats.h b/include/linux/gen_stats.h index 0ffa41df0ee8..710e901085d0 100644 --- a/include/linux/gen_stats.h +++ b/include/linux/gen_stats.h @@ -22,6 +22,11 @@ struct gnet_stats_basic { __u64 bytes; __u32 packets; +}; +struct gnet_stats_basic_packed +{ + __u64 bytes; + __u32 packets; } __attribute__ ((packed)); /** |
