Yuchung Cheng b451e5d24b tcp: avoid fragmenting peculiar skbs in SACK ...

This patch fixes a bug in splitting an SKB during SACK
processing. Specifically if an skb contains multiple
packets and is only partially sacked in the higher sequences,
tcp_match_sack_to_skb() splits the skb and marks the second fragment
as SACKed.

The current code further attempts rounding up the first fragment
to MSS boundaries. But it misses a boundary condition when the
rounded-up fragment size (pkt_len) is exactly skb size.  Spliting
such an skb is pointless and causses a kernel warning and aborts
the SACK processing. This patch universally checks such over-split
before calling tcp_fragment to prevent these unnecessary warnings.

Fixes: adb92db857ee ("tcp: Make SACK code to split only at mss boundaries")
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2017-05-11 21:35:20 -04:00

..

netfilter

Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next

2017-05-01 10:47:53 -04:00

af_inet.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

2017-05-02 16:40:27 -07:00

ah4.c

IPsec: do not ignore crypto err in ah4 input

2017-01-16 12:57:48 +01:00

arp.c

neighbour: fix nlmsg_pid in notifications

2017-03-22 10:48:49 -07:00

cipso_ipv4.c

netlabel: out of bound access in cipso_v4_validate()

2017-02-04 19:44:22 -05:00

datagram.c

net: Set sk_txhash from a random number

2015-07-29 22:44:04 -07:00

devinet.c

net: rtnetlink: plumb extended ack to doit function

2017-04-17 15:35:38 -04:00

esp4_offload.c

esp4/6: Fix GSO path for non-GSO SW-crypto packets

2017-04-19 07:48:57 +02:00

esp4.c

net/esp4: Fix invalid esph pointer crash

2017-05-01 14:58:50 -04:00

fib_frontend.c

net: fib: Decrease one unnecessary rt cache flush in fib_disable_ip

2017-04-27 16:33:30 -04:00

fib_lookup.h

ipv4: consider TOS in fib_select_default

2015-07-24 22:46:11 -07:00

fib_notifier.c

ipv4: fib: Remove redundant argument

2017-03-10 09:45:09 -08:00

fib_rules.c

ipv4: fib_rules: Dump FIB rules when registering FIB notifier

2017-03-16 10:18:34 -07:00

fib_semantics.c

net: ipv4: add support for ECMP hash policy choice

2017-03-21 15:27:19 -07:00

fib_trie.c

ipv4: fib: Remove redundant argument

2017-03-10 09:45:09 -08:00

fou.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-10-30 12:42:58 -04:00

gre_demux.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-06-30 05:03:36 -04:00

gre_offload.c

net: add recursion limit to GRO

2016-10-20 14:32:22 -04:00

icmp.c

net: ipv4: add support for ECMP hash policy choice

2017-03-21 15:27:19 -07:00

igmp.c

igmp, mld: Fix memory leak in igmpv3/mld_del_delrec()

2017-02-09 16:43:45 -05:00

inet_connection_sock.c

dccp/tcp: do not inherit mc_list from parent

2017-05-09 15:17:49 -04:00

inet_diag.c

tcp: remove early retransmit

2017-01-13 22:37:16 -05:00

inet_fragment.c

net: disable fragment reassembly if high_thresh is zero

2016-06-05 22:56:42 -04:00

inet_hashtables.c

treewide: use kv[mz]alloc* rather than opencoded variants

2017-05-08 17:15:13 -07:00

inet_timewait_sock.c

ipv4: Namespaceify tcp_tw_recycle and tcp_max_tw_buckets knob

2016-12-29 11:38:31 -05:00

inetpeer.c

net: Add helper function to compare inetpeer addresses

2015-08-28 13:32:36 -07:00

ip_forward.c

ipv4: allow local fragmentation in ip_finish_output_gso()

2016-11-03 16:10:26 -04:00

ip_fragment.c

inet: frag: release spinlock before calling icmp_send()

2017-03-22 15:40:45 -07:00

ip_gre.c

ip_tunnel: Allow policy-based routing through tunnels

2017-04-21 13:21:31 -04:00

ip_input.c

net: Add sysctl to toggle early demux for tcp and udp

2017-03-24 13:17:07 -07:00

ip_options.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

ip_output.c

udp: avoid ufo handling on IP payload compression packets

2017-03-09 18:28:42 -08:00

ip_sockglue.c

ipv4: get rid of ip_ra_lock

2017-04-30 22:44:04 -04:00

ip_tunnel_core.c

netlink: pass extended ACK struct to parsing functions

2017-04-13 13:58:22 -04:00

ip_tunnel.c

ip_tunnel: Allow policy-based routing through tunnels

2017-04-21 13:21:31 -04:00

ip_vti.c

vti: check nla_put_* return value

2017-05-08 15:10:31 -04:00

ipcomp.c

…

ipconfig.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-04-06 08:24:51 -07:00

ipip.c

ip_tunnel: Allow policy-based routing through tunnels

2017-04-21 13:21:31 -04:00

ipmr.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-04-20 10:35:33 -04:00

Kconfig

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next

2017-02-16 21:25:49 -05:00

Makefile

ipv4: fib: Move FIB notification code to a separate file

2017-03-10 09:45:09 -08:00

netfilter.c

netfilter: use skb_to_full_sk in ip_route_me_harder

2017-02-28 12:49:36 +01:00

ping.c

ping: implement proper locking

2017-03-24 20:50:28 -07:00

proc.c

net/tcp_fastopen: Add snmp counter for blackhole detection

2017-04-24 14:27:17 -04:00

protocol.c

net: Add sysctl to toggle early demux for tcp and udp

2017-03-24 13:17:07 -07:00

raw_diag.c

net: ip, raw_diag -- Use jump for exiting from nested loop

2016-11-03 15:25:26 -04:00

raw.c

ipv4, ipv6: ensure raw socket message is big enough to hold an IP header

2017-05-04 11:02:46 -04:00

route.c

Revert "ipv4: restore rt->fi for reference counting"

2017-05-08 22:35:32 -04:00

syncookies.c

tcp: randomize timestamps on syncookies

2017-05-05 12:00:11 -04:00

sysctl_net_ipv4.c

net/tcp_fastopen: Disable active side TFO in certain scenarios

2017-04-24 14:27:17 -04:00

tcp_bbr.c

tcp_bbr: add a state transition diagram and accompanying comment

2016-10-29 17:12:43 -04:00

tcp_bic.c

tcp: replace cnt & rtt with struct in pkts_acked()

2016-05-11 14:43:19 -04:00

tcp_cdg.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h>

2017-03-02 08:42:27 +01:00

tcp_cong.c

tcp: memset ca_priv data to 0 properly

2017-04-26 14:58:32 -04:00

tcp_cubic.c

tcp_cubic: fix typo in module param description

2017-04-20 16:16:44 -04:00

tcp_dctcp.c

Revert "dctcp: update cwnd on congestion event"

2016-12-06 11:34:24 -05:00

tcp_diag.c

net: diag: Fix refcnt leak in error path destroying socket

2016-08-23 23:11:36 -07:00

tcp_fastopen.c

net/tcp_fastopen: Add snmp counter for blackhole detection

2017-04-24 14:27:17 -04:00

tcp_highspeed.c

tcp: add cwnd_undo functions to various tcp cc algorithms

2016-11-21 13:20:17 -05:00

tcp_htcp.c

tcp: replace cnt & rtt with struct in pkts_acked()

2016-05-11 14:43:19 -04:00

tcp_hybla.c

tcp: make undo_cwnd mandatory for congestion modules

2016-11-21 13:20:17 -05:00

tcp_illinois.c

tcp: add cwnd_undo functions to various tcp cc algorithms

2016-11-21 13:20:17 -05:00

tcp_input.c

tcp: avoid fragmenting peculiar skbs in SACK

2017-05-11 21:35:20 -04:00

tcp_ipv4.c

tcp: randomize timestamps on syncookies

2017-05-05 12:00:11 -04:00

tcp_lp.c

tcp: fix wraparound issue in tcp_lp

2017-05-02 15:07:02 -04:00

tcp_metrics.c

treewide: use kv[mz]alloc* rather than opencoded variants

2017-05-08 17:15:13 -07:00

tcp_minisocks.c

tcp: do not inherit fastopen_req from parent

2017-05-04 11:00:04 -04:00

tcp_nv.c

tcp: add NV congestion control

2016-06-10 23:07:49 -07:00

tcp_offload.c

gso: Support partial splitting at the frag_list pointer

2016-09-19 20:59:34 -04:00

tcp_output.c

tcp: make congestion control optionally skip slow start after idle

2017-05-08 14:37:07 -04:00

tcp_probe.c

tcp: Revert "tcp: tcp_probe: use spin_lock_bh()"

2017-02-21 13:26:03 -05:00

tcp_rate.c

tcp: do not pass timestamp to tcp_rate_gen()

2017-04-26 14:44:38 -04:00

tcp_recovery.c

tcp: tcp_rack_reo_timeout() must update tp->tcp_mstamp

2017-04-27 11:46:15 -04:00

tcp_scalable.c

tcp: add cwnd_undo functions to various tcp cc algorithms

2016-11-21 13:20:17 -05:00

tcp_timer.c

net/tcp_fastopen: Remove mss check in tcp_write_timeout()

2017-04-24 14:27:17 -04:00

tcp_vegas.c

tcp: make undo_cwnd mandatory for congestion modules

2016-11-21 13:20:17 -05:00

tcp_vegas.h

tcp: replace cnt & rtt with struct in pkts_acked()

2016-05-11 14:43:19 -04:00

tcp_veno.c

tcp: add cwnd_undo functions to various tcp cc algorithms

2016-11-21 13:20:17 -05:00

tcp_westwood.c

tcp_westwood: fix tcp_westwood_info() style mistakes

2017-03-16 20:23:28 -07:00

tcp_yeah.c

tcp: add cwnd_undo functions to various tcp cc algorithms

2016-11-21 13:20:17 -05:00

tcp.c

tcp: fix access to sk->sk_state in tcp_poll()

2017-04-30 22:24:16 -04:00

tunnel4.c

tunnels: correct conditional build of MPLS and IPv6

2016-07-11 13:27:06 -07:00

udp_diag.c

net: inet: diag: expose the socket mark to privileged processes.

2016-09-08 16:13:09 -07:00

udp_impl.h

udplite: call proper backlog handlers

2016-11-24 15:32:14 -05:00

udp_offload.c

udp: disable inner UDP checksum offloads in IPsec case

2017-04-24 13:48:54 -04:00

udp_tunnel.c

net: Remove deprecated tunnel specific UDP offload functions

2016-06-17 20:23:32 -07:00

udp.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-02-07 16:29:30 -05:00

udplite.c

udplite: call proper backlog handlers

2016-11-24 15:32:14 -05:00

xfrm4_input.c

esp: Add a software GRO codepath

2017-02-15 11:04:11 +01:00

xfrm4_mode_beet.c

…

xfrm4_mode_transport.c

xfrm: Add encapsulation header offsets while SKB is not encrypted

2017-04-14 10:07:39 +02:00

xfrm4_mode_tunnel.c

xfrm: Add encapsulation header offsets while SKB is not encrypted

2017-04-14 10:07:39 +02:00

xfrm4_output.c

xfrm: Add an IPsec hardware offloading API

2017-04-14 10:06:10 +02:00

xfrm4_policy.c

xfrm: policy: make policy backend const

2017-02-09 10:22:19 +01:00

xfrm4_protocol.c

xfrm: input: constify xfrm_input_afinfo

2017-02-09 10:22:17 +01:00

xfrm4_state.c

xfrm: remove unused function

2017-01-10 10:57:12 +01:00

xfrm4_tunnel.c

…