diff options
| author | Eric Dumazet <[email protected]> | 2012-07-10 10:03:41 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2012-07-10 23:33:12 -0700 |
| commit | b28ba72665356438e3a6e3be365c3c3071496840 (patch) | |
| tree | 2cf9ff84993f821cd4819db7dd609db1ccbf38f6 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | efc73f4bbc238d4f579fb612c04c8e1dd8a82979 (diff) | |
IPoIB: fix skb truesize underestimatiom
Or Gerlitz reported triggering of WARN_ON_ONCE(delta < len); in
skb_try_coalesce()
This warning tracks drivers that incorrectly set skb->truesize
IPoIB indeed allocates a full page to store a fragment, but only
accounts in skb->truesize the used part of the page (frame length)
This patch fixes skb truesize underestimation, and
also fixes a performance issue, because RX skbs have not enough tailroom
to allow IP and TCP stacks to pull their header in skb linear part
without an expensive call to pskb_expand_head()
Signed-off-by: Eric Dumazet <[email protected]>
Reported-by: Or Gerlitz <[email protected]>
Cc: Erez Shitrit <[email protected]>
Cc: Shlomo Pongartz <[email protected]>
Cc: Roland Dreier <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions