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Paolo Abeni 626abd59e5 net/route: enforce hoplimit max value 
Currently, when creating or updating a route, no check is performed
in both ipv4 and ipv6 code to the hoplimit value.

The caller can i.e. set hoplimit to 256, and when such route will
 be used, packets will be sent with hoplimit/ttl equal to 0.

This commit adds checks for the RTAX_HOPLIMIT value, in both ipv4
ipv6 route code, substituting any value greater than 255 with 255.

This is consistent with what is currently done for ADVMSS and MTU
in the ipv4 code.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-14 15:33:32 -04:00
..
netfilter netfilter: arp_tables: register table in initns 2016-04-07 11:58:49 +02:00
af_inet.c net: ipv4: Fix truncated timestamp returned by inet_current_timestamp() 2016-03-21 22:56:38 -04:00
ah4.c ah4: Fix error return in ah_input(). 2015-08-25 13:38:50 -07:00
arp.c arp: correct return value of arp_rcv 2016-03-07 14:55:04 -05:00
cipso_ipv4.c ipv4: coding style: comparison for inequality with NULL 2015-04-03 12:11:15 -04:00
datagram.c net: Set sk_txhash from a random number 2015-07-29 22:44:04 -07:00
devinet.c ipv4: Don't do expensive useless work during inetdev destroy. 2016-03-13 23:28:35 -04:00
esp4.c esp4: Switch to new AEAD interface 2015-05-28 11:23:20 +08:00
fib_frontend.c ipv4/fib: don't warn when primary address is missing if in_dev is dead 2016-04-24 23:26:29 -04:00
fib_lookup.h ipv4: consider TOS in fib_select_default 2015-07-24 22:46:11 -07:00
fib_rules.c net: ipv6: use common fib_default_rule_pref 2015-09-09 14:19:50 -07:00
fib_semantics.c net/route: enforce hoplimit max value 2016-05-14 15:33:32 -04:00
fib_trie.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-02-01 15:56:08 -08:00
fou.c udp_offload: Set encapsulation before inner completes. 2016-05-06 18:25:26 -04:00
gre_demux.c gre: Remove support for sharing GRE protocol hook. 2015-08-10 14:03:54 -07:00
gre_offload.c GRE: Disable segmentation offloads w/ CSUM and we are encapsulated via FOU 2016-04-07 16:56:33 -04:00
icmp.c net: ipv4: Convert IP network timestamps to be y2038 safe 2016-03-01 17:18:44 -05:00
igmp.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-03-08 12:34:12 -05:00
inet_connection_sock.c soreuseport: fix merge conflict in tcp bind 2016-02-24 13:38:18 -05:00
inet_diag.c net: diag: add a scheduling point in inet_diag_dump_icsk() 2016-03-14 19:38:09 -04:00
inet_fragment.c inet: kill unused skb_free op 2016-01-05 22:25:57 -05:00
inet_hashtables.c soreuseport: Fix TCP listener hash collision 2016-05-01 19:36:54 -04:00
inet_timewait_sock.c tcp/dccp: fix timewait races in timer handling 2015-09-21 16:32:29 -07:00
inetpeer.c net: Add helper function to compare inetpeer addresses 2015-08-28 13:32:36 -07:00
ip_forward.c net: remove skb_sender_cpu_clear() 2016-03-01 17:36:47 -05:00
ip_fragment.c net: Export ip fragment sysctl to unprivileged users 2016-02-16 20:42:54 -05:00
ip_gre.c gre: do not keep the GRE header around in collect medata mode 2016-05-11 15:16:32 -04:00
ip_input.c ipv4: namespacify ip_early_demux sysctl knob 2016-02-16 20:42:54 -05:00
ip_options.c net: ipv4: Convert IP network timestamps to be y2038 safe 2016-03-01 17:18:44 -05:00
ip_output.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-03-08 12:34:12 -05:00
ip_sockglue.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-02-23 00:09:14 -05:00
ip_tunnel.c ip_tunnel: fix preempt warning in ip tunnel creation/updating 2016-04-29 14:11:46 -04:00
ip_tunnel_core.c Fix returned tc and hoplimit values for route with IPv6 encapsulation 2016-03-27 22:35:02 -04:00
ip_vti.c vti: Add pmtu handling to vti_xmit. 2016-03-31 08:59:56 +02:00
ipcomp.c ipv4: coding style: comparison for equality with NULL 2015-04-03 12:11:15 -04:00
ipconfig.c ipv4: ipconfig: avoid unused ic_proto_used symbol 2016-01-29 19:39:09 -08:00
ipip.c iptunnel: scrub packet in iptunnel_pull_header 2016-02-18 14:34:54 -05:00
ipmr.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-12-03 21:09:12 -05:00
Kconfig ipv4: Remove inet_lro library 2016-02-17 16:15:46 -05:00
Makefile ipv4: Remove inet_lro library 2016-02-17 16:15:46 -05:00
netfilter.c ipv4: Pass struct net into ip_route_me_harder 2015-09-29 20:21:32 +02:00
ping.c net/ipv4: remove left over dead code 2016-03-02 15:00:55 -05:00
proc.c ipv4: Namespaceify ip_default_ttl sysctl knob 2016-02-16 20:42:54 -05:00
protocol.c net: Export inet_offloads and inet6_offloads 2014-09-19 17:15:31 -04:00
raw.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-02-23 00:09:14 -05:00
route.c route: do not cache fib route info on local routes with oif 2016-04-13 23:33:01 -04:00
syncookies.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
sysctl_net_ipv4.c ipv4: namespacify ip_early_demux sysctl knob 2016-02-16 20:42:54 -05:00
tcp.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
tcp_bic.c tcp: add tcp_in_slow_start helper 2015-07-09 14:22:52 -07:00
tcp_cdg.c tcp: do not slow start when cwnd equals ssthresh 2015-07-09 14:22:52 -07:00
tcp_cong.c tcp: remove tcp_ecn_make_synack() socket argument 2015-09-25 13:00:38 -07:00
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: allow dctcp alpha to drop to zero 2015-10-23 02:46:52 -07:00
tcp_diag.c net: diag: Support destroying TCP sockets. 2015-12-15 23:26:52 -05:00
tcp_fastopen.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
tcp_highspeed.c tcp: add tcp_in_slow_start helper 2015-07-09 14:22:52 -07:00
tcp_htcp.c tcp: add tcp_in_slow_start helper 2015-07-09 14:22:52 -07:00
tcp_hybla.c tcp: do not slow start when cwnd equals ssthresh 2015-07-09 14:22:52 -07:00
tcp_illinois.c tcp: add tcp_in_slow_start helper 2015-07-09 14:22:52 -07:00
tcp_input.c tcp: Merge tx_flags and tskey in tcp_shifted_skb 2016-04-21 14:40:55 -04:00
tcp_ipv4.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
tcp_lp.c
tcp_metrics.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-03-08 12:34:12 -05:00
tcp_minisocks.c tcp: Add RFC4898 tcpEStatsPerfDataSegsOut/In 2016-03-14 14:55:26 -04:00
tcp_offload.c net: Store checksum result for offloaded GSO checksums 2016-02-11 08:55:33 -05:00
tcp_output.c tcp: refresh skb timestamp at retransmit time 2016-05-10 15:58:41 -04:00
tcp_probe.c net: ipv4: tcp_probe: Replace timespec with timespec64 2016-03-01 17:18:44 -05:00
tcp_recovery.c tcp: use RACK to detect losses 2015-10-21 07:00:53 -07:00
tcp_scalable.c tcp: add tcp_in_slow_start helper 2015-07-09 14:22:52 -07:00
tcp_timer.c ipv4: Namespaceify tcp_orphan_retries sysctl knob 2016-02-07 14:35:11 -05:00
tcp_vegas.c tcp: add tcp_in_slow_start helper 2015-07-09 14:22:52 -07:00
tcp_vegas.h tcp: prepare CC get_info() access from getsockopt() 2015-04-29 17:10:38 -04:00
tcp_veno.c tcp: add tcp_in_slow_start helper 2015-07-09 14:22:52 -07:00
tcp_westwood.c tcp_westwood: fix tcp_westwood_info() 2015-05-05 19:50:09 -04:00
tcp_yeah.c tcp_yeah: don't set ssthresh below 2 2016-01-11 17:25:16 -05:00
tunnel4.c
udp.c soreuseport: fix ordering for mixed v4/v6 sockets 2016-04-14 21:14:03 -04:00
udp_diag.c soreuseport: setsockopt SO_ATTACH_REUSEPORT_[CE]BPF 2016-01-04 22:49:59 -05:00
udp_impl.h net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
udp_offload.c udp_offload: Set encapsulation before inner completes. 2016-05-06 18:25:26 -04:00
udp_tunnel.c tunnel: Clear IPCB(skb)->opt before dst_link_failure called 2016-02-23 19:11:56 -05:00
udplite.c
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 ipv4: hash net ptr into fragmentation bucket selection 2015-03-25 14:07:04 -04:00
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 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec 2015-12-22 16:26:31 -05:00
xfrm4_protocol.c
xfrm4_state.c
xfrm4_tunnel.c