linux/net/core
Herbert Xu 86911732d3 gro: Avoid copying headers of unmerged packets
Unfortunately simplicity isn't always the best.  The fraginfo
interface turned out to be suboptimal.  The problem was quite
obvious.  For every packet, we have to copy the headers from
the frags structure into skb->head, even though for 99% of the
packets this part is immediately thrown away after the merge.

LRO didn't have this problem because it directly read the headers
from the frags structure.

This patch attempts to address this by creating an interface
that allows GRO to access the headers in the first frag without
having to copy it.  Because all drivers that use frags place the
headers in the first frag this optimisation should be enough.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-29 16:33:03 -08:00
..
datagram.c net: sk_free_datagram() should use sk_mem_reclaim_partial() 2008-11-05 01:38:06 -08:00
dev_mcast.c net: Rationalise email address: Network Specific Parts 2008-10-13 19:01:08 -07:00
dev.c gro: Avoid copying headers of unmerged packets 2009-01-29 16:33:03 -08:00
dst.c net: speedup dst_release() 2008-11-14 00:53:54 -08:00
ethtool.c ethtool: Add GGRO and SGRO ops 2008-12-15 23:44:31 -08:00
fib_rules.c net: fib_rules ordering fixes. 2008-11-07 22:52:34 -08:00
filter.c filter: add SKF_AD_NLATTR_NEST to look for nested attributes 2008-11-20 00:49:27 -08:00
flow.c netns xfrm: lookup in netns 2008-11-25 17:35:18 -08:00
gen_estimator.c pkt_sched: gen_estimator: Optimize gen_estimator_active() 2008-11-26 15:24:32 -08:00
gen_stats.c
iovec.c
kmap_skb.h
link_watch.c Revert "net: Fix for initial link state in 2.6.28" 2009-01-05 16:01:51 -08:00
Makefile net: Add SKB DMA mapping helper functions. 2008-09-11 04:51:14 -07:00
neighbour.c cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits: net 2008-12-29 22:44:47 -08:00
net_namespace.c NET: net_namespace, fix lock imbalance 2009-01-20 14:39:31 -08:00
net-sysfs.c netns: filter out uevent not belonging to init_net 2008-11-25 16:46:37 -08:00
net-sysfs.h
netevent.c
netpoll.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2008-12-15 20:03:50 -08:00
pktgen.c netns xfrm: finding states in netns 2008-11-25 17:31:51 -08:00
request_sock.c net: convert BUG_TRAP to generic WARN_ON 2008-07-25 21:43:18 -07:00
rtnetlink.c netdev: introduce dev_get_stats() 2008-11-19 21:40:23 -08:00
scm.c Merge branch 'master' into next 2008-11-18 18:52:37 +11:00
skb_dma_map.c net: Fix off-by-one in skb_dma_map 2008-10-12 21:07:34 -07:00
skbuff.c gro: Avoid copying headers of unmerged packets 2009-01-29 16:33:03 -08:00
sock.c Revert "net: release skb->dst in sock_queue_rcv_skb()" 2008-12-17 22:11:38 -08:00
stream.c net: Rationalise email address: Network Specific Parts 2008-10-13 19:01:08 -07:00
sysctl_net_core.c netns xfrm: per-netns sysctls 2008-11-25 18:00:48 -08:00
user_dma.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2008-07-26 20:17:56 -07:00
utils.c