netdev - [PATCH v2 net-next 0/2] pskb_extract() helper function.

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Message-Id: <cover.1461368732.git.sowmini.varadhan@oracle.com>
Date:	Fri, 22 Apr 2016 18:36:34 -0700
From:	Sowmini Varadhan <sowmini.varadhan@...cle.com>
To:	netdev@...r.kernel.org, rds-devel@....oracle.com,
	santosh.shilimkar@...cle.com, davem@...emloft.net
Cc:	sowmini.varadhan@...cle.com, eric.dumazet@...il.com,
	marcelo.leitner@...il.com
Subject: [PATCH v2 net-next 0/2] pskb_extract() helper function.

This patchset follows up on the discussion in
 https://www.mail-archive.com/netdev@vger.kernel.org/msg105090.html

For RDS-TCP, we have to deal with the full gamut of
nonlinear sk_buffs, including all the frag_list variants.
Also, the parent skb has to remain unchanged, while the clone
is queued for Rx on the PF_RDS socket. 

Patch 1 of this patchset adds a pskb_extract() function that 
does all this without the redundant memcpy's in pskb_expand_head() 
and __pskb_pull_tail().

v2: Marcelo Leitner review comments


Sowmini Varadhan (2):
  Add pskb_extract() helper function
  Call pskb_extract() helper function

 include/linux/skbuff.h |    2 +
 net/core/skbuff.c      |  242 ++++++++++++++++++++++++++++++++++++++++++++++++
 net/rds/tcp_recv.c     |   14 +--
 3 files changed, 247 insertions(+), 11 deletions(-)