linux/net
Alexander Duyck c73c3d9c49 tcp: Fix truesize accounting in tcp_try_coalesce
This patch addresses several issues in the way we were tracking the
truesize in tcp_try_coalesce.

First it was using ksize which prevents us from having a 0 sized head frag
and getting a usable result.  To resolve that this patch uses the end
pointer which is set based off either ksize, or the frag_size supplied in
build_skb.  This allows us to compute the original truesize of the entire
buffer and remove that value leaving us with just what was added as pages.

The second issue was the use of skb->len if there is a mergeable head frag.
We should only need to remove the size of an data aligned sk_buff from our
current skb->truesize to compute the delta for a buffer with a reused head.
By using skb->len the value of truesize was being artificially reduced
which means that head frags could use more memory than buffers using
standard allocations.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-03 04:21:33 -04:00
..
9p net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
802 net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
8021q vlan: Stop using NLA_PUT*(). 2012-04-02 04:33:44 -04:00
appletalk net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
atm net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
ax25 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-23 23:15:17 -04:00
batman-adv batman-adv: skip the window protection test when the originator has no neighbours 2012-04-18 09:54:02 +02:00
bluetooth Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth 2012-04-09 15:47:49 -04:00
bridge bridge: Fix fatal typo in setup of multicast_querier_expired 2012-04-30 13:30:56 -04:00
caif net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
can can: fix sparse warning for cgw_list 2012-04-16 21:08:18 +02:00
ceph crush: include header for global symbols 2012-04-27 00:03:34 -04:00
core net: Add missing linux/prefetch.h include to net/core/sock.c 2012-05-03 02:25:55 -04:00
dcb net: dcb: add CEE notify calls 2012-04-25 19:47:17 -04:00
dccp net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
decnet net decnet: Convert to use register_net_sysctl 2012-04-20 21:22:29 -04:00
dns_resolver net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
dsa
econet sock: Introduce named constants for sk_reuse 2012-04-21 15:52:25 -04:00
ethernet net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
ieee802154 6lowpan: duplicate definition of IEEE802154_ALEN 2012-04-26 06:01:09 -04:00
ipv4 tcp: Fix truesize accounting in tcp_try_coalesce 2012-05-03 04:21:33 -04:00
ipv6 ipv6: Export ipv6 functions for use by other protocols 2012-05-01 09:30:55 -04:00
ipx net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
irda net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
iucv Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2012-03-22 18:15:32 -07:00
key net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
l2tp l2tp: let iproute2 create L2TPv3 IP tunnels using IPv6 2012-05-01 09:30:55 -04:00
lapb Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
llc net: add a limit parameter to sk_add_backlog() 2012-04-23 22:28:28 -04:00
mac80211 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem 2012-04-26 15:03:48 -04:00
netfilter sock: Introduce named constants for sk_reuse 2012-04-21 15:52:25 -04:00
netlabel netlabel: use GFP flags from caller instead of GFP_ATOMIC 2012-03-22 19:29:57 -04:00
netlink af_netlink: drop_monitor/dropwatch friendly 2012-04-24 00:35:14 -04:00
netrom net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
nfc Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem 2012-04-18 14:27:48 -04:00
openvswitch net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
packet af_packet: packet_getsockopt() cleanup 2012-04-21 16:36:42 -04:00
phonet net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
rds sock: Introduce named constants for sk_reuse 2012-04-21 15:52:25 -04:00
rfkill device.h: cleanup users outside of linux/include (C files) 2012-03-11 14:27:37 -04:00
rose net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
rxrpc net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
sched netem: add ECN capability 2012-05-01 09:39:48 -04:00
sctp net: add a limit parameter to sk_add_backlog() 2012-04-23 22:28:28 -04:00
sunrpc sock: Introduce named constants for sk_reuse 2012-04-21 15:52:25 -04:00
tipc tipc: compress out gratuitous extra carriage returns 2012-04-30 15:53:56 -04:00
unix net: sock_diag_handler structs can be const 2012-04-25 20:46:59 -04:00
wanrouter
wimax net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
wireless Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem 2012-04-26 15:03:48 -04:00
x25 net: add a limit parameter to sk_add_backlog() 2012-04-23 22:28:28 -04:00
xfrm net: Convert all sysctl registrations to register_net_sysctl 2012-04-20 21:22:30 -04:00
compat.c net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
Kconfig
Makefile
nonet.c
socket.c net: change big iov allocations 2012-04-21 16:24:20 -04:00
sysctl_net.c net: Remove register_net_sysctl_table 2012-04-20 21:22:30 -04:00