Eric Dumazet a50e233c50 net-gro: restore frag0 optimization ... Main difference between napi_frags_skb() and napi_gro_receive() is that the later is called while ethernet header was already pulled by the NIC driver (eth_type_trans() was called before napi_gro_receive()) Jerry Chu in commit 299603e837 ("net-gro: Prepare GRO stack for the upcoming tunneling support") tried to remove this difference by calling eth_type_trans() from napi_frags_skb() instead of doing this later from napi_frags_finish() Goal was that napi_gro_complete() could call ptype->callbacks.gro_complete(skb, 0) (offset of first network header = 0) Also, xxx_gro_receive() handlers all use off = skb_gro_offset(skb) to point to their own header, for the current skb and ones held in gro_list Problem is this cleanup work defeated the frag0 optimization: It turns out the consecutive pskb_may_pull() calls are too expensive. This patch brings back the frag0 stuff in napi_frags_skb(). As all skb have their mac header in skb head, we no longer need skb_gro_mac_header() Reported-by: Michal Schmidt <mschmidt@redhat.com> Fixes: 299603e837 ("net-gro: Prepare GRO stack for the upcoming tunneling support") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Jerry Chu <hkchu@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2014-03-31 16:26:40 -04:00
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acpi	Merge branches 'acpi-processor', 'acpi-hotplug', 'acpi-init', 'acpi-pm' and 'acpica'	2014-01-29 11:47:18 +01:00
asm-generic	mm: Use ptep/pmdp_set_numa() for updating _PAGE_NUMA bit	2014-02-17 11:19:36 +11:00
clocksource
crypto
drm	Merge tag 'ttm-fixes-3.14-2014-02-18' of git://people.freedesktop.org/~thomash/linux into drm-fixes	2014-02-19 08:21:26 +10:00
dt-bindings	clk: tegra124: remove gr2d and gr3d clocks	2014-02-20 19:10:58 +02:00
keys
kvm	ARM: KVM: fix non-VGIC compilation	2014-03-06 09:47:42 +01:00
linux	net-gro: restore frag0 optimization	2014-03-31 16:26:40 -04:00
math-emu
media
memory
misc
net	ipv6: reuse rt6_need_strict	2014-03-31 16:16:16 -04:00
pcmcia
ras
rdma	IB: Report using RoCE IP based gids in port caps	2014-02-13 14:46:03 -08:00
rxrpc
scsi	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2014-01-31 15:31:23 -08:00
sound	ASoC: dapm: Add locking to snd_soc_dapm_xxxx_pin functions	2014-02-20 18:40:07 +09:00
target	iscsi/iser-target: Fix isert_conn->state hung shutdown issues	2014-03-04 17:54:09 -08:00
trace	net: Rename skb->rxhash to skb->hash	2014-03-26 15:58:20 -04:00
uapi	net-sysfs: expose number of carrier on/off changes	2014-03-31 16:24:52 -04:00
video
xen	Merge branch 'for-linus' of git://git.kernel.dk/linux-block	2014-02-14 10:45:18 -08:00
Kbuild