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linux/net/ipv4
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Eric Dumazet 22b4a4f22d tcp: fix retransmit of partially acked frames 
Alexander Beregalov reported skb_over_panic errors and provided stack
trace.

I occurs commit a21d45726aca (tcp: avoid order-1 allocations on wifi and
tx path) added a regression, when a retransmit is done after a partial
ACK.

tcp_retransmit_skb() tries to aggregate several frames if the first one
has enough available room to hold the following ones payload. This is
controlled by /proc/sys/net/ipv4/tcp_retrans_collapse tunable (default :
enabled)

Problem is we must make sure _pskb_trim_head() doesnt fool
skb_availroom() when pulling some bytes from skb (this pull is done when
receiver ACK part of the frame).

Reported-by: Alexander Beregalov <a.beregalov@gmail.com>
Cc: Marc MERLIN <marc@merlins.org>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-18 16:52:45 -04:00
..
netfilter
netfilter: nf_ct_ipv4: packets with wrong ihl are invalid
2012-04-10 12:50:49 +02:00
af_inet.c
Remove all #inclusions of asm/system.h
2012-03-28 18:30:03 +01:00
ah4.c
net: ipv4: Standardize prefixes for message logging
2012-03-12 17:05:21 -07:00
arp.c
Remove all #inclusions of asm/system.h
2012-03-28 18:30:03 +01:00
cipso_ipv4.c
ipv4: Convert call_rcu() to kfree_rcu(), drop opt_kfree_rcu()
2012-02-21 09:03:31 -08:00
datagram.c
ipv4: Lock socket and use cork flow in ip4_datagram_connect().
2011-05-08 13:48:57 -07:00
devinet.c
Disintegrate and delete asm/system.h
2012-03-28 15:58:21 -07:00
esp4.c
net: ipv4: Standardize prefixes for message logging
2012-03-12 17:05:21 -07:00
fib_frontend.c
Remove all #inclusions of asm/system.h
2012-03-28 18:30:03 +01:00
fib_lookup.h
ipv4: Fix nexthop caching wrt. scoping.
2011-03-24 18:06:47 -07:00
fib_rules.c
net: ipv4: export fib_lookup and fib_table_lookup
2011-12-04 22:43:33 +01:00
fib_semantics.c
Remove all #inclusions of asm/system.h
2012-03-28 18:30:03 +01:00
fib_trie.c
Remove all #inclusions of asm/system.h
2012-03-28 18:30:03 +01:00
gre.c
net: ipv4: Standardize prefixes for message logging
2012-03-12 17:05:21 -07:00
icmp.c
Remove all #inclusions of asm/system.h
2012-03-28 18:30:03 +01:00
igmp.c
Remove all #inclusions of asm/system.h
2012-03-28 18:30:03 +01:00
inet_connection_sock.c
tcp: bind() optimize port allocation
2012-01-25 21:50:43 -05:00
inet_diag.c
netlink: add netlink_dump_control structure for netlink_dump_start()
2012-02-26 14:10:06 -05:00
inet_fragment.c
net/ipv4: EXPORT_SYMBOL cleanups
2010-07-12 12:57:54 -07:00
inet_hashtables.c
net: Compute protocol sequence numbers and fragment IDs using MD5.
2011-08-06 18:33:19 -07:00
inet_lro.c
net: add skb frag size accessors
2011-10-19 03:10:46 -04:00
inet_timewait_sock.c
net: Fix files explicitly needing to include module.h
2011-10-31 19:30:28 -04:00
inetpeer.c
route: Remove redirect_genid
2012-03-08 00:30:32 -08:00
ip_forward.c
ipv4: Save nexthop address of LSRR/SSRR option to IPCB.
2011-11-23 19:19:32 -05:00
ip_fragment.c
net: ipv4: Standardize prefixes for message logging
2012-03-12 17:05:21 -07:00
ip_gre.c
net: ipv4: Standardize prefixes for message logging
2012-03-12 17:05:21 -07:00
ip_input.c
Remove all #inclusions of asm/system.h
2012-03-28 18:30:03 +01:00
ip_options.c
net: ipv4: Standardize prefixes for message logging
2012-03-12 17:05:21 -07:00
ip_output.c
Remove all #inclusions of asm/system.h
2012-03-28 18:30:03 +01:00
ip_sockglue.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2012-03-20 21:04:47 -07:00
ipcomp.c
net: Convert printks to pr_<level>
2012-03-11 23:42:51 -07:00
ipconfig.c
net: Convert printks to pr_<level>
2012-03-11 23:42:51 -07:00
ipip.c
net: Convert printks to pr_<level>
2012-03-11 23:42:51 -07:00
ipmr.c
Remove all #inclusions of asm/system.h
2012-03-28 18:30:03 +01:00
Kconfig
net: Fix build regression when INET_UDP_DIAG=y and IPV6=m
2012-02-07 13:35:28 -05:00
Makefile
tcp memory pressure controls
2011-12-12 19:04:10 -05:00
netfilter.c
netfilter: possible unaligned packet header in ip_route_me_harder
2011-11-21 18:46:18 +01:00
ping.c
Remove all #inclusions of asm/system.h
2012-03-28 18:30:03 +01:00
proc.c
tcp: reduce out_of_order memory use
2012-03-19 16:53:08 -04:00
protocol.c
net: add __rcu annotations to protocol
2010-10-27 11:37:31 -07:00
raw.c
net: Convert printks to pr_<level>
2012-03-11 23:42:51 -07:00
route.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2012-04-02 17:53:39 -07:00
syncookies.c
tcp: fix syncookie regression
2012-03-11 15:52:12 -07:00
sysctl_net_ipv4.c
tcp: properly initialize tcp memory limits
2012-02-02 14:34:41 -05:00
tcp_bic.c
tcp: fix undo after RTO for BIC
2012-01-20 14:17:26 -05:00
tcp_cong.c
net: ipv4: Standardize prefixes for message logging
2012-03-12 17:05:21 -07:00
tcp_cubic.c
tcp: fix undo after RTO for CUBIC
2012-01-20 14:17:26 -05:00
tcp_diag.c
inet_diag: Rename inet_diag_req into inet_diag_req_v2
2012-01-11 12:56:06 -08:00
tcp_highspeed.c
tcp: mark tcp_congestion_ops read_mostly
2011-03-10 00:40:17 -08:00
tcp_htcp.c
tcp: mark tcp_congestion_ops read_mostly
2011-03-10 00:40:17 -08:00
tcp_hybla.c
tcp: mark tcp_congestion_ops read_mostly
2011-03-10 00:40:17 -08:00
tcp_illinois.c
tcp: mark tcp_congestion_ops read_mostly
2011-03-10 00:40:17 -08:00
tcp_input.c
tcp: fix tcp_grow_window() for large incoming frames
2012-04-17 22:32:00 -04:00
tcp_ipv4.c
dmaengine-fixes for 3.4-rc3
2012-04-10 15:30:16 -07:00
tcp_lp.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
tcp_memcontrol.c
Merge branch 'for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2012-03-20 18:11:21 -07:00
tcp_minisocks.c
tcp: md5: rcu conversion
2012-01-31 12:14:00 -05:00
tcp_output.c
tcp: fix retransmit of partially acked frames
2012-04-18 16:52:45 -04:00
tcp_probe.c
net: ipv4: Standardize prefixes for message logging
2012-03-12 17:05:21 -07:00
tcp_scalable.c
tcp: mark tcp_congestion_ops read_mostly
2011-03-10 00:40:17 -08:00
tcp_timer.c
net: ipv4: Standardize prefixes for message logging
2012-03-12 17:05:21 -07:00
tcp_vegas.c
tcp: mark tcp_congestion_ops read_mostly
2011-03-10 00:40:17 -08:00
tcp_vegas.h
…
tcp_veno.c
tcp: mark tcp_congestion_ops read_mostly
2011-03-10 00:40:17 -08:00
tcp_westwood.c
tcp: mark tcp_congestion_ops read_mostly
2011-03-10 00:40:17 -08:00
tcp_yeah.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
tcp.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2012-04-12 14:04:33 -07:00
tunnel4.c
net: Convert printks to pr_<level>
2012-03-11 23:42:51 -07:00
udp_diag.c
net: kill duplicate included header
2012-01-17 10:31:12 -05:00
udp_impl.h
net: Make setsockopt() optlen be unsigned.
2009-09-30 16:12:20 -07:00
udp.c
Remove all #inclusions of asm/system.h
2012-03-28 18:30:03 +01:00
udplite.c
net: ipv4: Standardize prefixes for message logging
2012-03-12 17:05:21 -07:00
xfrm4_input.c
net/ipv4: EXPORT_SYMBOL cleanups
2010-07-12 12:57:54 -07:00
xfrm4_mode_beet.c
ipsec: be careful of non existing mac headers
2012-02-23 16:50:45 -05:00
xfrm4_mode_transport.c
…
xfrm4_mode_tunnel.c
ipsec: be careful of non existing mac headers
2012-02-23 16:50:45 -05:00
xfrm4_output.c
xfrm4: Don't call icmp_send on local error
2011-07-01 17:33:19 -07:00
xfrm4_policy.c
ipv4: fix ipsec forward performance regression
2011-10-24 03:01:22 -04:00
xfrm4_state.c
net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules
2011-10-31 19:30:30 -04:00
xfrm4_tunnel.c
net: ipv4: Standardize prefixes for message logging
2012-03-12 17:05:21 -07:00