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author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-10-11 11:17:47 +0000 |
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committer | David S. Miller <davem@davemloft.net> | 2010-10-16 11:13:18 -0700 |
commit | 6f0333b8fde44b8c04a53b2461504f0e8f1cebe6 (patch) | |
tree | 7a5f065c7f55e891760b6162723ec003b7fa922d /net/core/skbuff.c | |
parent | 7662ff46b7b3678162ce125903115e4ab0607a2d (diff) | |
download | op-kernel-dev-6f0333b8fde44b8c04a53b2461504f0e8f1cebe6.zip op-kernel-dev-6f0333b8fde44b8c04a53b2461504f0e8f1cebe6.tar.gz |
r8169: use 50% less ram for RX ring
Using standard skb allocations in r8169 leads to order-3 allocations (if
PAGE_SIZE=4096), because NIC needs 16383 bytes, and skb overhead makes
this bigger than 16384 -> 32768 bytes per "skb"
Using kmalloc() permits to reduce memory requirements of one r8169 nic
by 4Mbytes. (256 frames * 16Kbytes). This is fine since a hardware bug
requires us to copy incoming frames, so we build real skb when doing
this copy.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/skbuff.c')
0 files changed, 0 insertions, 0 deletions