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linux/net/ipv4
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Eric Dumazet ade9628ed0 tcp: drop dst in tcp_add_backlog() 
Under stress, softirq rx handler often hits a socket owned by the user,
and has to queue the packet into socket backlog.

When this happens, skb dst refcount is taken before we escape rcu
protected region. This is done from __sk_add_backlog() calling
skb_dst_force().

Consumer will have to perform the opposite costly operation.

AFAIK nothing in tcp stack requests the dst after skb was stored
in the backlog. If this was the case, we would have had failures
already since skb_dst_force() can end up clearing skb dst anyway.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-20 10:25:47 -08:00
..
bpfilter
bpfilter: remove trailing newline
2018-07-24 14:10:42 -07:00
netfilter
netfilter: nf_nat_snmp_basic: add missing helper alias name
2018-10-16 10:01:50 +02:00
af_inet.c
inet: minor optimization for backlog setting in listen(2)
2018-11-07 22:31:07 -08:00
ah4.c
net-ipv4: remove 2 always zero parameters from ipv4_redirect()
2018-09-26 20:30:55 -07:00
arp.c
net: Evict neighbor entries on carrier down
2018-10-12 09:47:39 -07:00
cipso_ipv4.c
net/ipv4: defensive cipso option parsing
2018-09-17 19:37:46 -07:00
datagram.c
ipv4: Allow sending multicast packets on specific i/f using VRF socket
2018-10-02 22:28:17 -07:00
devinet.c
net/{ipv4,ipv6}: Do not put target net if input nsid is invalid
2018-10-25 16:21:31 -07:00
esp4_offload.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next
2018-07-27 09:33:37 -07:00
esp4.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next
2018-10-01 22:31:17 -07:00
fib_frontend.c
net: Don't return invalid table id error when dumping all families
2018-10-24 14:06:25 -07:00
fib_lookup.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fib_notifier.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fib_rules.c
net: fib_rules: add extack support
2018-04-23 10:21:24 -04:00
fib_semantics.c
net: Add extack argument to ip_fib_metrics_init
2018-11-06 15:00:45 -08:00
fib_trie.c
net/ipv4: Plumb support for filtering route dumps
2018-10-16 00:13:12 -07:00
fou.c
fou, fou6: ICMP error handlers for FoU and GUE
2018-11-08 17:13:08 -08:00
gre_demux.c
net: Convert protocol error handlers from void to int
2018-11-08 17:13:08 -08:00
gre_offload.c
Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net
2018-07-03 10:29:26 +09:00
icmp.c
net: Convert protocol error handlers from void to int
2018-11-08 17:13:08 -08:00
igmp.c
ipv4/igmp: fix v1/v2 switchback timeout based on rfc3376, 8.12
2018-10-29 20:26:06 -07:00
inet_connection_sock.c
inet: minor optimization for backlog setting in listen(2)
2018-11-07 22:31:07 -08:00
inet_diag.c
sock_diag: request _diag module only when the family or proto has been registered
2018-03-12 11:03:42 -04:00
inet_fragment.c
inet: frags: better deal with smp races
2018-11-08 18:40:30 -08:00
inet_hashtables.c
net: ensure unbound stream socket to be chosen when not in a VRF
2018-11-07 16:12:38 -08:00
inet_timewait_sock.c
soreuseport: initialise timewait reuseport field
2018-04-07 22:32:32 -04:00
inetpeer.c
inetpeer: fix uninit-value in inet_getpeer
2018-04-09 10:57:35 -04:00
ip_forward.c
net: ipv4: Control SKB reprioritization after forwarding
2018-08-01 09:52:30 -07:00
ip_fragment.c
net: drop skb on failure in ip_check_defrag()
2018-11-01 13:55:30 -07:00
ip_gre.c
net: Convert protocol error handlers from void to int
2018-11-08 17:13:08 -08:00
ip_input.c
ip: factor out protocol delivery helper
2018-11-07 16:23:05 -08:00
ip_options.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ip_output.c
net: Add and use skb_mark_not_on_list().
2018-09-10 10:06:54 -07:00
ip_sockglue.c
net: bpfilter: fix iptables failure if bpfilter_umh is disabled
2018-11-05 17:12:18 -08:00
ip_tunnel_core.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2018-11-19 10:55:00 -08:00
ip_tunnel.c
ip_tunnel: be careful when accessing the inner header
2018-09-24 12:27:04 -07:00
ip_vti.c
net-ipv4: remove 2 always zero parameters from ipv4_redirect()
2018-09-26 20:30:55 -07:00
ipcomp.c
net-ipv4: remove 2 always zero parameters from ipv4_redirect()
2018-09-26 20:30:55 -07:00
ipconfig.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-06-06 18:39:49 -07:00
ipip.c
net: Convert protocol error handlers from void to int
2018-11-08 17:13:08 -08:00
ipmr_base.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2018-10-19 11:03:06 -07:00
ipmr.c
net: Don't return invalid table id error when dumping all families
2018-10-24 14:06:25 -07:00
Kconfig
net: remove blank lines at end of file
2018-07-24 14:10:43 -07:00
Makefile
bpf, sockmap: convert to generic sk_msg interface
2018-10-15 12:23:19 -07:00
metrics.c
net: Add extack argument to ip_fib_metrics_init
2018-11-06 15:00:45 -08:00
netfilter.c
netfilter: utils: move nf_ip_checksum* from ipv4 to utils
2018-07-16 17:51:48 +02:00
netlink.c
ipv4: support sport, dport and ip_proto in RTM_GETROUTE
2018-05-23 15:14:12 -04:00
ping.c
ipv4: Allow sending multicast packets on specific i/f using VRF socket
2018-10-02 22:28:17 -07:00
proc.c
ip: discard IPv4 datagrams with overlapping segments.
2018-08-05 17:16:46 -07:00
protocol.c
fou, fou6: ICMP error handlers for FoU and GUE
2018-11-08 17:13:08 -08:00
raw_diag.c
net: ipv6: add second dif to raw socket lookups
2017-08-07 11:39:22 -07:00
raw.c
net: fix raw socket lookup device bind matching with VRFs
2018-11-07 16:12:39 -08:00
route.c
ipv4: Don't try to print ASCII of link level header in martian dumps.
2018-11-20 10:15:36 -08:00
syncookies.c
tcp: provide earliest departure time in skb->tstamp
2018-09-21 19:37:59 -07:00
sysctl_net_ipv4.c
net: provide a sysctl raw_l3mdev_accept for raw socket lookup with VRFs
2018-11-07 16:12:38 -08:00
tcp_bbr.c
tcp_bbr: update comments to reflect pacing_margin_percent
2018-11-08 20:46:17 -08:00
tcp_bic.c
tcp: consolidate congestion control undo functions
2017-08-06 21:25:10 -07:00
tcp_bpf.c
bpf: tcp_bpf_recvmsg should return EAGAIN when nonblocking and no data
2018-10-30 23:31:22 +01:00
tcp_cdg.c
tcp: cdg: use tcp high resolution clock cache
2018-10-15 22:56:42 -07:00
tcp_cong.c
tcp: Namespace-ify sysctl_tcp_default_congestion_control
2017-11-15 14:09:52 +09:00
tcp_cubic.c
tcp: consolidate congestion control undo functions
2017-08-06 21:25:10 -07:00
tcp_dctcp.c
tcp: refactor DCTCP ECN ACK handling
2018-10-10 22:26:00 -07:00
tcp_dctcp.h
tcp: refactor DCTCP ECN ACK handling
2018-10-10 22:26:00 -07:00
tcp_diag.c
net: sock: replace sk_state_load with inet_sk_state_load and remove sk_state_store
2017-12-20 14:00:25 -05:00
tcp_fastopen.c
tcp: pause Fast Open globally after third consecutive timeout
2017-12-13 15:51:12 -05:00
tcp_highspeed.c
tcp: consolidate congestion control undo functions
2017-08-06 21:25:10 -07:00
tcp_htcp.c
tcp: fix cwnd undo in Reno and HTCP congestion controls
2017-08-06 21:25:10 -07:00
tcp_hybla.c
tcp: make undo_cwnd mandatory for congestion modules
2016-11-21 13:20:17 -05:00
tcp_illinois.c
net/tcp/illinois: replace broken algorithm reference link
2018-02-28 12:03:47 -05:00
tcp_input.c
tcp: minor optimization in tcp ack fast path processing
2018-11-11 10:24:18 -08:00
tcp_ipv4.c
tcp: drop dst in tcp_add_backlog()
2018-11-20 10:25:47 -08:00
tcp_lp.c
tcp: switch TCP TS option (RFC 7323) to 1ms clock
2017-05-17 16:06:01 -04:00
tcp_metrics.c
net: Drop pernet_operations::async
2018-03-27 13:18:09 -04:00
tcp_minisocks.c
tcp: do not restart timewait timer on rst reception
2018-08-31 23:10:35 -07:00
tcp_nv.c
tcp_nv: fix potential integer overflow in tcpnv_acked
2018-01-31 10:26:30 -05:00
tcp_offload.c
tcp: Don't coalesce decrypted and encrypted SKBs
2018-07-16 00:12:09 -07:00
tcp_output.c
tcp: tsq: no longer use limit_output_bytes for paced flows
2018-11-11 13:57:03 -08:00
tcp_rate.c
tcp: introduce tcp_skb_timestamp_us() helper
2018-09-21 19:37:59 -07:00
tcp_recovery.c
tcp: introduce tcp_skb_timestamp_us() helper
2018-09-21 19:37:59 -07:00
tcp_scalable.c
tcp: consolidate congestion control undo functions
2017-08-06 21:25:10 -07:00
tcp_timer.c
tcp: do not change tcp_wstamp_ns in tcp_mstamp_refresh
2018-10-15 22:56:41 -07:00
tcp_ulp.c
tcp, ulp: remove socket lock assertion on ULP cleanup
2018-10-16 12:38:41 -07:00
tcp_vegas.c
tcp: fix under-evaluated ssthresh in TCP Vegas
2017-09-29 06:07:00 +01:00
tcp_vegas.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
tcp_veno.c
tcp: consolidate congestion control undo functions
2017-08-06 21:25:10 -07:00
tcp_westwood.c
tcp: Revert "tcp: remove CA_ACK_SLOWPATH"
2017-08-30 11:20:08 -07:00
tcp_yeah.c
tcp: consolidate congestion control undo functions
2017-08-06 21:25:10 -07:00
tcp.c
tcp: add SRTT to SCM_TIMESTAMPING_OPT_STATS
2018-11-17 20:34:36 -08:00
tunnel4.c
net: Convert protocol error handlers from void to int
2018-11-08 17:13:08 -08:00
udp_diag.c
net: diag: document swapped src/dst in udp_dump_one.
2018-10-28 19:27:21 -07:00
udp_impl.h
net: Convert protocol error handlers from void to int
2018-11-08 17:13:08 -08:00
udp_offload.c
udp: implement GRO for plain UDP sockets.
2018-11-07 16:23:04 -08:00
udp_tunnel.c
udp: Handle ICMP errors for tunnels with same destination port on both endpoints
2018-11-08 17:13:08 -08:00
udp.c
udp: fix jump label misuse
2018-11-16 23:01:56 -08:00
udplite.c
net: Convert protocol error handlers from void to int
2018-11-08 17:13:08 -08:00
xfrm4_input.c
xfrm: reset transport header back to network header after all input transforms ahave been applied
2018-09-04 10:26:30 +02:00
xfrm4_mode_beet.c
networking: make skb_pull & friends return void pointers
2017-06-16 11:48:39 -04:00
xfrm4_mode_transport.c
xfrm: reset transport header back to network header after all input transforms ahave been applied
2018-09-04 10:26:30 +02:00
xfrm4_mode_tunnel.c
xfrm: Verify MAC header exists before overwriting eth_hdr(skb)->h_proto
2018-03-07 10:54:29 +01:00
xfrm4_output.c
net: xfrm: use skb_gso_validate_network_len() to check gso sizes
2018-03-04 17:49:17 -05:00
xfrm4_policy.c
net: Drop pernet_operations::async
2018-03-27 13:18:09 -04:00
xfrm4_protocol.c
net: Convert protocol error handlers from void to int
2018-11-08 17:13:08 -08:00
xfrm4_state.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
xfrm4_tunnel.c
…