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b8a51b38e4
linux/net/ipv4
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Stefano Brivio b8a51b38e4 fou, fou6: ICMP error handlers for FoU and GUE 
As the destination port in FoU and GUE receiving sockets doesn't
necessarily match the remote destination port, we can't associate errors
to the encapsulating tunnels with a socket lookup -- we need to blindly
try them instead. This means we don't even know if we are handling errors
for FoU or GUE without digging into the packets.

Hence, implement a single handler for both, one for IPv4 and one for IPv6,
that will check whether the packet that generated the ICMP error used a
direct IP encapsulation or if it had a GUE header, and send the error to
the matching protocol handler, if any.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-08 17:13:08 -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
fib_notifier.c
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 ip: process in-order fragments efficiently 2018-08-11 17:54:18 -07:00
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
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 net/ipv4: Update ip_tunnel_metadata_cnt static key to modern api 2018-05-10 15:13:33 -04:00
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
raw.c net: fix raw socket lookup device bind matching with VRFs 2018-11-07 16:12:39 -08:00
route.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-10-12 21:38:46 -07:00
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: centralize code to set gains 2018-10-17 22:22:53 -07:00
tcp_bic.c
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_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_htcp.c
tcp_hybla.c
tcp_illinois.c net/tcp/illinois: replace broken algorithm reference link 2018-02-28 12:03:47 -05:00
tcp_input.c tcp: add tcp_reset_xmit_timer() helper 2018-10-23 19:42:44 -07:00
tcp_ipv4.c net: Convert protocol error handlers from void to int 2018-11-08 17:13:08 -08:00
tcp_lp.c
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: add tcp_reset_xmit_timer() helper 2018-10-23 19:42:44 -07:00
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_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_vegas.h
tcp_veno.c
tcp_westwood.c
tcp_yeah.c
tcp.c mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
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: Support for error handlers of tunnels with arbitrary destination port 2018-11-08 17:13:08 -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
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
xfrm4_tunnel.c