linux_dsm_epyc7002/drivers/infiniband/ulp
Eric Dumazet b28ba72665 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 <edumazet@google.com>
Reported-by: Or Gerlitz <ogerlitz@mellanox.com>
Cc: Erez Shitrit <erezsh@mellanox.com>
Cc: Shlomo Pongartz <shlomop@mellanox.com>
Cc: Roland Dreier <roland@purestorage.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10 23:33:12 -07:00
..
ipoib IPoIB: fix skb truesize underestimatiom 2012-07-10 23:33:12 -07:00
iser IB/iser: Fix error flow in iser ep connection establishment 2012-05-18 17:05:31 -07:00
srp IB/srp: Consolidate repetitive sysfs code 2012-02-27 09:27:57 -08:00
srpt Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2012-05-21 17:37:09 -07:00