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android_kernel_oneplus_msm8998/net/ipv4
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Shmulik Ladkani 0fe65e4eac ipv4: ip_do_fragment: Preserve skb_iif during fragmentation 
[ Upstream commit d2f0c961148f65bc73eda72b9fa3a4e80973cb49 ]

Previously, during fragmentation after forwarding, skb->skb_iif isn't
preserved, i.e. 'ip_copy_metadata' does not copy skb_iif from given
'from' skb.

As a result, ip_do_fragment's creates fragments with zero skb_iif,
leading to inconsistent behavior.

Assume for example an eBPF program attached at tc egress (post
forwarding) that examines __sk_buff->ingress_ifindex:
 - the correct iif is observed if forwarding path does not involve
   fragmentation/refragmentation
 - a bogus iif is observed if forwarding path involves
   fragmentation/refragmentatiom

Fix, by preserving skb_iif during 'ip_copy_metadata'.

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-16 19:44:59 +02:00
..
netfilter netfilter: x_tables: enforce nul-terminated table name from getsockopt GET_ENTRIES 2019-03-23 08:44:29 +01:00
af_inet.c gso_segment: Reset skb->mac_len after modifying network header 2018-09-29 03:08:52 -07:00
ah4.c ipsec: check return value of skb_to_sgvec always 2018-04-13 19:50:23 +02:00
arp.c arp: fix arp_filter on l3slave devices 2018-04-13 19:50:24 +02:00
cipso_ipv4.c netlabel: fix out-of-bounds memory accesses 2019-03-23 08:44:23 +01:00
datagram.c net: Set sk_txhash from a random number 2015-07-29 22:44:04 -07:00
devinet.c ipv4: igmp: guard against silly MTU values 2018-01-02 20:33:24 +01:00
esp4.c ipsec: check return value of skb_to_sgvec always 2018-04-13 19:50:23 +02:00
fib_frontend.c net: ipv4: Fix memory leak in network namespace dismantle 2019-02-06 19:43:03 +01:00
fib_lookup.h
fib_rules.c net: ipv6: use common fib_default_rule_pref 2015-09-09 14:19:50 -07:00
fib_semantics.c net: ipv4: update fnhe_pmtu when first hop's MTU changes 2018-10-20 09:52:36 +02:00
fib_trie.c net: ipv4: Fix memory leak in network namespace dismantle 2019-02-06 19:43:03 +01:00
fou.c net: fou: do not use guehdr after iptunnel_pull_offloads in gue_udp_recv 2019-04-27 09:34:00 +02:00
gre_demux.c gre: Remove support for sharing GRE protocol hook. 2015-08-10 14:03:54 -07:00
gre_offload.c net: add recursion limit to GRO 2016-11-15 07:46:38 +01:00
icmp.c net: Add __icmp_send helper. 2019-03-23 08:44:23 +01:00
igmp.c net: igmp: add a missing rcu locking section 2018-02-16 20:09:37 +01:00
inet_connection_sock.c tcp/dccp: remove reqsk_put() from inet_child_forget() 2019-03-23 08:44:31 +01:00
inet_diag.c net: diag: support v4mapped sockets in inet_diag_find_one_icsk() 2019-04-03 06:23:21 +02:00
inet_fragment.c inet: frags: better deal with smp races 2019-02-08 11:25:33 +01:00
inet_hashtables.c tcp/dccp: fix hashdance race for passive sessions 2015-10-23 05:42:21 -07:00
inet_lro.c
inet_timewait_sock.c soreuseport: initialise timewait reuseport field 2018-05-16 10:06:50 +02:00
inetpeer.c net: ipv4: use a dedicated counter for icmp_v4 redirect packets 2019-02-23 09:05:14 +01:00
ip_forward.c net: Pass net into dst_output and remove dst_output_okfn 2015-10-08 04:26:54 -07:00
ip_fragment.c net: ipv4: do not handle duplicate fragments as overlapping 2019-02-08 11:25:33 +01:00
ip_gre.c vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices 2016-06-24 10:18:18 -07:00
ip_input.c net: Fix usage of pskb_trim_rcsum 2019-02-06 19:43:02 +01:00
ip_options.c net: avoid use IPCB in cipso_v4_error 2019-03-23 08:44:23 +01:00
ip_output.c ipv4: ip_do_fragment: Preserve skb_iif during fragmentation 2019-05-16 19:44:59 +02:00
ip_sockglue.c ip: on queued skb use skb_header_pointer instead of pskb_may_pull 2019-01-26 09:42:49 +01:00
ip_tunnel.c ip_tunnel: Fix name string concatenate in __ip_tunnel_create() 2018-12-13 09:21:29 +01:00
ip_tunnel_core.c ip_tunnel: don't force DF when MTU is locked 2018-11-27 16:07:57 +01:00
ip_vti.c vti4: Fix a ipip packet processing bug in 'IPCOMP' virtual tunnel 2019-03-23 08:44:24 +01:00
ipcomp.c
ipconfig.c ipconfig: Correctly initialise ic_nameservers 2018-08-06 16:24:38 +02:00
ipip.c ipip: only increase err_count for some certain type icmp in ipip_err 2017-11-18 11:11:06 +01:00
ipmr.c ipv4: Fix potential Spectre v1 vulnerability 2019-01-13 10:05:27 +01:00
Kconfig ipv4+ipv6: Make INET*_ESP select CRYPTO_ECHAINIV 2018-08-15 17:42:05 +02:00
Makefile tcp: track the packet timings in RACK 2015-10-21 07:00:48 -07:00
netfilter.c netfilter: use skb_to_full_sk in ip_route_me_harder 2018-03-18 11:17:51 +01:00
ping.c ipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg 2018-05-26 08:48:46 +02:00
proc.c ip: discard IPv4 datagrams with overlapping segments. 2019-02-08 11:25:32 +01:00
protocol.c
raw.c net: ipv4: fix for a race condition in raw_sendmsg 2018-01-02 20:33:25 +01:00
route.c ipv4: add sanity checks in ipv4_link_failure() 2019-05-16 19:44:52 +02:00
syncookies.c tcp: handle inet_csk_reqsk_queue_add() failures 2019-03-23 08:44:30 +01:00
sysctl_net_ipv4.c ipv4: set the tcp_min_rtt_wlen range from 0 to one day 2019-05-16 19:44:52 +02:00
tcp.c tcp: clear icsk_backoff in tcp_write_queue_purge() 2019-02-23 09:05:14 +01:00
tcp_bic.c
tcp_cdg.c
tcp_cong.c tcp: disallow cwnd undo when switching congestion control 2017-06-14 13:16:19 +02:00
tcp_cubic.c tcp_cubic: do not set epoch_start in the future 2015-09-17 22:35:07 -07:00
tcp_dctcp.c tcp: Ensure DCTCP reacts to losses 2019-04-27 09:33:55 +02:00
tcp_diag.c tcp: ensure proper barriers in lockless contexts 2015-11-15 18:36:38 -05:00
tcp_fastopen.c tcp: initialize max window for a new fastopen socket 2017-02-04 09:45:09 +01:00
tcp_highspeed.c
tcp_htcp.c
tcp_hybla.c
tcp_illinois.c net/tcp/illinois: replace broken algorithm reference link 2018-05-30 07:49:02 +02:00
tcp_input.c tcp: tcp_grow_window() needs to respect tcp_space() 2019-04-27 09:34:00 +02:00
tcp_ipv4.c tcp: tcp_v4_err() should be more careful 2019-02-23 09:05:13 +01:00
tcp_lp.c tcp: fix wraparound issue in tcp_lp 2017-05-14 13:32:58 +02:00
tcp_memcontrol.c
tcp_metrics.c tcp: convert cached rtt from usec to jiffies when feeding initial rto 2016-04-20 15:41:56 +09:00
tcp_minisocks.c tcp: use an RB tree for ooo receive queue 2018-10-13 09:11:34 +02:00
tcp_offload.c
tcp_output.c tcp: fix NULL ref in tail loss probe 2018-12-17 21:55:09 +01:00
tcp_probe.c
tcp_recovery.c tcp: use RACK to detect losses 2015-10-21 07:00:53 -07:00
tcp_scalable.c
tcp_timer.c net: tcp: close sock if net namespace is exiting 2018-01-31 12:06:14 +01:00
tcp_vegas.c tcp: fix under-evaluated ssthresh in TCP Vegas 2017-12-25 14:22:15 +01:00
tcp_vegas.h
tcp_veno.c
tcp_westwood.c
tcp_yeah.c tcp: cwnd does not increase in TCP YeAH 2016-09-30 10:18:34 +02:00
tunnel4.c
udp.c udplite: call proper backlog handlers 2019-03-23 08:44:29 +01:00
udp_diag.c
udp_impl.h udplite: call proper backlog handlers 2019-03-23 08:44:29 +01:00
udp_offload.c net: avoid skb_warn_bad_offload false positives on UFO 2017-08-12 19:29:08 -07:00
udp_tunnel.c tunnel: Clear IPCB(skb)->opt before dst_link_failure called 2016-04-20 15:41:56 +09:00
udplite.c udplite: call proper backlog handlers 2019-03-23 08:44:29 +01:00
xfrm4_input.c netfilter: Pass net into okfn 2015-09-17 17:18:37 -07:00
xfrm4_mode_beet.c
xfrm4_mode_transport.c
xfrm4_mode_tunnel.c
xfrm4_output.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-10-24 06:54:12 -07:00
xfrm4_policy.c ipv4: lock mtu in fnhe when received PMTU < net.ipv4.route.min_pmtu 2018-05-30 07:49:04 +02:00
xfrm4_protocol.c
xfrm4_state.c
xfrm4_tunnel.c