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| author | Ido Shamay <idos@mellanox.com> | 2015-02-03 17:57:20 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-02-04 16:17:45 -0800 |
| commit | e8e7f018f1951b0359647ca0c1ff1be4f896b99f (patch) | |
| tree | 8bc0b9145a2541d37867c1730d6433cbf4c8fb68 /drivers/net/hamradio | |
| parent | b110d2ce490f990af6985fbae619fde5ae4cc46f (diff) | |
| download | linux-e8e7f018f1951b0359647ca0c1ff1be4f896b99f.tar.bz2 | |
net/mlx4_en: Adjust RX frag strides to frag sizes
This patch improves memory utilization and therefore the packets rate
for special MTU's. Instead of setting the frag_stride to the maximal
hard coded frag_size, use the actual frag_size that is set according to
the MTU, when setting the stride of the last frag.
So, for example, for MTU 1600, where the frag_size of the 2nd frag is
86, the frag_size is set to 128 instead of 4096. See below:
Before:
frag:0 - size:1536 prefix:0 stride:1536
frag:1 - size:86 prefix:1536 stride:4096
frag 0 allocator: - size:32768 frags:21
frag 1 allocator: - size:32768 frags:8
After:
frag:0 - size:1536 prefix:0 stride:1536
frag:1 - size:86 prefix:1536 stride:128
frag 0 allocator: - size:32768 frags:21
frag 1 allocator: - size:32768 frags:256
Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/hamradio')
0 files changed, 0 insertions, 0 deletions