diff options
| author | Eric Dumazet <edumazet@google.com> | 2013-06-28 08:05:06 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-04 10:57:36 -0800 |
| commit | 2c4805f3ae216cfd6fc2a386ea523d5a6eee6fdc (patch) | |
| tree | 19f5d5bf88f537a5050506234344ac831085d087 /virt/kvm | |
| parent | d4e937777fa1a97b21916eecd7d7d9dd8534d3d1 (diff) | |
iwl3945: better skb management in rx path
commit 45fe142cefa864b685615bcb930159f6749c3667 upstream.
Steinar reported reallocations of skb->head with IPv6, leading to
a warning in skb_try_coalesce()
It turns out iwl3945 has several problems :
1) skb->truesize is underestimated.
We really consume PAGE_SIZE bytes for a fragment,
not the frame length.
2) 128 bytes of initial headroom is a bit low and forces reallocations.
3) We can avoid consuming a full page for small enough frames.
Reported-by: Steinar H. Gunderson <sesse@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Paul Stewart <pstew@google.com>
Acked-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'virt/kvm')
0 files changed, 0 insertions, 0 deletions