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linux-stable/net/ipv6
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Jamie Bainbridge d0941130c9 icmp: Add counters for rate limits 
There are multiple ICMP rate limiting mechanisms:

* Global limits: net.ipv4.icmp_msgs_burst/icmp_msgs_per_sec
* v4 per-host limits: net.ipv4.icmp_ratelimit/ratemask
* v6 per-host limits: net.ipv6.icmp_ratelimit/ratemask

However, when ICMP output is limited, there is no way to tell
which limit has been hit or even if the limits are responsible
for the lack of ICMP output.

Add counters for each of the cases above. As we are within
local_bh_disable(), use the __INC stats variant.

Example output:

 # nstat -sz "*RateLimit*"
 IcmpOutRateLimitGlobal          134                0.0
 IcmpOutRateLimitHost            770                0.0
 Icmp6OutRateLimitHost           84                 0.0

Signed-off-by: Jamie Bainbridge <jamie.bainbridge@gmail.com>
Suggested-by: Abhishek Rawal <rawal.abhishek92@gmail.com>
Link: https://lore.kernel.org/r/273b32241e6b7fdc5c609e6f5ebc68caf3994342.1674605770.git.jamie.bainbridge@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-01-26 10:52:18 +01:00
..
ila genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
netfilter netfilter: nf_tables: Extend nft_expr_ops::dump callback parameters 2022-11-15 10:46:34 +01:00
addrconf.c Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
addrconf_core.c net: rename reference+tracking helpers 2022-06-09 21:52:55 -07:00
addrlabel.c ipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network 2022-11-07 12:26:15 +00:00
af_inet6.c net: Return errno in sk->sk_prot->get_port(). 2022-11-21 13:05:39 +00:00
ah6.c xfrm: ah: add extack to ah_init_state, ah6_init_state 2022-09-29 07:17:59 +02:00
anycast.c
calipso.c
datagram.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-12-13 09:49:29 +01:00
esp6.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next 2022-10-03 07:52:13 +01:00
esp6_offload.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next 2022-11-29 20:50:51 -08:00
exthdrs.c net: ipv6: add skb drop reasons to TLV parse 2022-04-13 13:09:57 +01:00
exthdrs_core.c
exthdrs_offload.c
fib6_notifier.c
fib6_rules.c ipv6: change fib6_rules_net_exit() to batch mode 2022-02-08 20:41:34 -08:00
fou6.c
icmp.c icmp: Add counters for rate limits 2023-01-26 10:52:18 +01:00
inet6_connection_sock.c
inet6_hashtables.c tcp: Access &tcp_hashinfo via net. 2022-09-20 10:21:49 -07:00
ioam6.c genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
ioam6_iptunnel.c ipv6: ioam: Insertion frequency in lwtunnel output 2022-02-04 20:24:45 -08:00
ip6_checksum.c
ip6_fib.c ipv6: fib6_new_sernum() optimization 2022-11-16 12:42:00 +00:00
ip6_flowlabel.c treewide: use get_random_u32() when possible 2022-10-11 17:42:58 -06:00
ip6_gre.c ipv6: tunnels: use DEV_STATS_INC() 2022-11-16 12:48:44 +00:00
ip6_icmp.c
ip6_input.c tcp/udp: Make early_demux back namespacified. 2022-07-15 18:50:35 -07:00
ip6_offload.c IPv6/GRO: generic helper to remove temporary HBH/jumbo header in driver 2022-12-12 15:41:44 -08:00
ip6_offload.h
ip6_output.c ipv6: avoid use-after-free in ip6_fragment() 2022-12-07 20:14:35 -08:00
ip6_tunnel.c ipv6: tunnels: use DEV_STATS_INC() 2022-11-16 12:48:44 +00:00
ip6_udp_tunnel.c
ip6_vti.c ipv6: tunnels: use DEV_STATS_INC() 2022-11-16 12:48:44 +00:00
ip6mr.c treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
ipcomp6.c xfrm: ipcomp: add extack to ipcomp{4,6}_init_state 2022-09-29 07:18:00 +02:00
ipv6_sockglue.c inet6: Clean up failure path in do_ipv6_setsockopt(). 2022-10-24 09:40:39 +01:00
Kconfig crypto: lib - make the sha1 library optional 2022-07-15 16:43:59 +08:00
Makefile net: ipv6: use ipv6-y directly instead of ipv6-objs 2021-09-28 13:13:40 +01:00
mcast.c treewide: use get_random_u32_below() instead of deprecated function 2022-11-18 02:15:15 +01:00
mcast_snoop.c net: bridge: mcast: fix broken length + header check for MRDv6 Adv. 2021-04-27 14:02:06 -07:00
mip6.c xfrm: mip6: add extack to mip6_destopt_init_state, mip6_rthdr_init_state 2022-09-29 07:18:01 +02:00
ndisc.c net: fix potential refcount leak in ndisc_router_discovery() 2022-08-15 11:40:28 +01:00
netfilter.c netfilter: Use l3mdev flow key when re-routing mangled packets 2022-05-16 13:03:29 +02:00
output_core.c treewide: use get_random_u32_{above,below}() instead of manual loop 2022-11-18 02:15:22 +01:00
ping.c inet6: Remove inet6_destroy_sock() in sk->sk_prot->destroy(). 2022-10-24 09:40:38 +01:00
proc.c icmp: Add counters for rate limits 2023-01-26 10:52:18 +01:00
protocol.c
raw.c ipv6: raw: Deduct extension header length in rawv6_push_pending_frames 2023-01-11 12:49:13 +00:00
reassembly.c net: dropreason: add SKB_DROP_REASON_DUP_FRAG 2022-10-31 20:14:26 -07:00
route.c ipv6: Make ip6_route_output_flags_noref() static. 2023-01-24 18:12:52 -08:00
rpl.c
rpl_iptunnel.c net: ipv6: rpl_iptunnel: Replace 0-length arrays with flexible arrays 2023-01-06 19:28:01 -08:00
seg6.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-08 18:38:30 +02:00
seg6_hmac.c net: ipv6: unexport __init-annotated seg6_hmac_net_init() 2022-06-28 21:23:30 -07:00
seg6_iptunnel.c seg6: add support for SRv6 H.L2Encaps.Red behavior 2022-07-29 12:14:03 +01:00
seg6_local.c net: Remove the obsolte u64_stats_fetch_*_irq() users (net). 2022-10-28 20:13:54 -07:00
sit.c ipv6/sit: use DEV_STATS_INC() to avoid data-races 2022-11-16 12:48:44 +00:00
syncookies.c tcp: Fix data-races around sysctl_tcp_syncookies. 2022-07-18 12:21:54 +01:00
sysctl_net_ipv6.c net: sysctl: introduce sysctl SYSCTL_THREE 2022-05-03 10:15:06 +02:00
tcp_ipv6.c net/tcp: Do cleanup on tcp_md5_key_copy() failure 2022-12-01 15:53:05 -08:00
tcpv6_offload.c net: move gro definitions to include/net/gro.h 2021-11-16 13:16:54 +00:00
tunnel6.c
udp.c udp: Access &udp_table via net. 2022-11-16 09:43:35 +00:00
udp_impl.h tcp/udp: Call inet6_destroy_sock() in IPv6 sk->sk_destruct(). 2022-10-12 17:50:37 -07:00
udp_offload.c udp: allow header check for dodgy GSO_UDP_L4 packets. 2022-12-12 09:29:56 +00:00
udplite.c tcp/udp: Call inet6_destroy_sock() in IPv6 sk->sk_destruct(). 2022-10-12 17:50:37 -07:00
xfrm6_input.c
xfrm6_output.c xfrm: fix tunnel model fragmentation behavior 2022-03-01 12:08:40 +01:00
xfrm6_policy.c xfrm: Fix ignored return value in xfrm6_init() 2022-11-22 07:16:34 +01:00
xfrm6_protocol.c
xfrm6_state.c
xfrm6_tunnel.c xfrm: tunnel: add extack to ipip_init_state, xfrm6_tunnel_init_state 2022-09-29 07:18:00 +02:00