OpenCloudOS-Kernel/net
Lorenzo Bianconi c09551c6ff net: ipv4: use a dedicated counter for icmp_v4 redirect packets
According to the algorithm described in the comment block at the
beginning of ip_rt_send_redirect, the host should try to send
'ip_rt_redirect_number' ICMP redirect packets with an exponential
backoff and then stop sending them at all assuming that the destination
ignores redirects.
If the device has previously sent some ICMP error packets that are
rate-limited (e.g TTL expired) and continues to receive traffic,
the redirect packets will never be transmitted. This happens since
peer->rate_tokens will be typically greater than 'ip_rt_redirect_number'
and so it will never be reset even if the redirect silence timeout
(ip_rt_redirect_silence) has elapsed without receiving any packet
requiring redirects.

Fix it by using a dedicated counter for the number of ICMP redirect
packets that has been sent by the host

I have not been able to identify a given commit that introduced the
issue since ip_rt_send_redirect implements the same rate-limiting
algorithm from commit 1da177e4c3 ("Linux-2.6.12-rc2")

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-08 21:50:15 -08:00
..
6lowpan 6lowpan: convert to DEFINE_SHOW_ATTRIBUTE 2018-12-19 00:28:05 +01:00
9p 9p/net: put a lower bound on msize 2018-12-25 17:07:49 +09:00
802
8021q net: core: dev: Add extack argument to dev_change_flags() 2018-12-06 13:26:07 -08:00
appletalk
atm Revert "net: simplify sock_poll_wait" 2018-10-23 10:57:06 -07:00
ax25 ax25: fix possible use-after-free 2019-01-23 11:18:00 -08:00
batman-adv Here are some batman-adv bugfixes: 2019-02-01 10:19:26 -08:00
bluetooth Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2018-12-27 13:53:32 -08:00
bpf Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2018-12-10 18:00:43 -08:00
bpfilter net: bpfilter: change section name of bpfilter UMH blob. 2019-01-16 15:46:46 -08:00
bridge Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf 2019-01-28 10:51:51 -08:00
caif Revert "net: simplify sock_poll_wait" 2018-10-23 10:57:06 -07:00
can can: bcm: check timer values before ktime conversion 2019-01-22 11:33:46 +01:00
ceph libceph: avoid KEEPALIVE_PENDING races in ceph_con_keepalive() 2019-01-21 14:53:12 +01:00
core Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2019-02-01 15:28:07 -08:00
dcb net: dcb: Add priority-to-DSCP map getters 2018-07-27 13:17:50 -07:00
dccp dccp: fool proof ccid_hc_[rt]x_parse_options() 2019-02-01 14:49:10 -08:00
decnet decnet: fix DN_IFREQ_SIZE 2019-01-27 23:11:55 -08:00
dns_resolver dns: Allow the dns resolver to retrieve a server set 2018-10-04 09:40:52 -07:00
dsa net: dsa: Fix NULL checking in dsa_slave_set_eee() 2019-02-06 13:42:54 -08:00
ethernet net: ethernet: provide nvmem_get_mac_address() 2018-12-03 15:40:30 -08:00
hsr
ieee802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-24 16:19:56 -08:00
ife
ipv4 net: ipv4: use a dedicated counter for icmp_v4 redirect packets 2019-02-08 21:50:15 -08:00
ipv6 sit: check if IPv6 enabled before calling ip6_err_gen_icmpv6_unreach() 2019-02-07 10:48:42 -08:00
iucv iucv: Remove SKB list assumptions. 2018-11-10 16:55:11 -08:00
kcm Revert "kcm: remove any offset before parsing messages" 2018-09-17 18:43:42 -07:00
key af_key: fix indentation on declaration statement 2018-11-15 18:09:32 +01:00
l2tp l2tp: copy 4 more bytes to linear part if necessary 2019-01-31 08:58:46 -08:00
l3mdev l3mdev: add function to retreive upper master 2018-12-03 14:15:26 -08:00
lapb
llc llc: do not use sk_eat_skb() 2018-10-22 19:59:20 -07:00
mac80211 mac80211: ensure that mgmt tx skbs have tailroom for encryption 2019-02-01 11:08:02 +01:00
mac802154 mac802154: Remove VLA usage of skcipher 2018-09-28 12:46:07 +08:00
mpls net/mpls: Handle kernel side filtering of route dumps 2018-10-16 00:14:07 -07:00
ncsi net/ncsi: Add NCSI Mellanox OEM command 2018-11-27 16:37:20 -08:00
netfilter netfilter: nft_compat: don't use refcount_inc on newly allocated entry 2019-02-05 14:10:33 +01:00
netlabel netlabel: check for IPV4MASK in addrinfo_get 2018-09-21 18:58:34 -07:00
netlink net: netlink: rename NETLINK_DUMP_STRICT_CHK -> NETLINK_GET_STRICT_CHK 2018-12-14 11:44:31 -08:00
netrom netrom: switch to sock timer API 2019-01-27 10:38:04 -08:00
nfc net: Revert recent Spectre-v1 patches. 2018-12-23 16:01:35 -08:00
nsh nsh: set mac len based on inner packet 2018-07-12 16:55:29 -07:00
openvswitch openvswitch: Avoid OOB read when parsing flow nlattrs 2019-01-16 13:35:21 -08:00
packet af_packet: fix raw sockets over 6in4 tunnel 2019-01-17 15:54:45 -08:00
phonet net: Revert recent Spectre-v1 patches. 2018-12-23 16:01:35 -08:00
psample
qrtr
rds rds: fix refcount bug in rds_sock_addref 2019-01-31 09:43:27 -08:00
rfkill rfkill: gpio: Remove unused include 2018-12-18 13:13:56 +01:00
rose net/rose: fix NULL ax25_cb kernel panic 2019-01-27 10:40:01 -08:00
rxrpc rxrpc: bad unlock balance in rxrpc_recvmsg 2019-02-06 10:54:07 -08:00
sched net: cls_flower: Remove filter from mask before freeing it 2019-02-04 09:19:14 -08:00
sctp sctp: check and update stream->out_curr when allocating stream_out 2019-02-03 14:27:47 -08:00
smc net/smc: correct state change for peer closing 2019-02-04 09:11:19 -08:00
strparser bpf, sockmap: convert to generic sk_msg interface 2018-10-15 12:23:19 -07:00
sunrpc svcrdma: Remove max_sge check at connect time 2019-02-06 15:32:34 -05:00
switchdev net: switchdev: Add extack to switchdev_handle_port_obj_add() callback 2018-12-12 16:34:22 -08:00
tipc tipc: fix uninit-value in tipc_nl_compat_doit 2019-01-15 20:29:21 -08:00
tls net: tls: Fix deadlock in free_resources tx 2019-01-28 23:07:08 -08:00
unix Revert "net: simplify sock_poll_wait" 2018-10-23 10:57:06 -07:00
vmw_vsock vsock/virtio: reset connected sockets on device removal 2019-02-03 11:06:25 -08:00
wimax wimax: remove blank lines at EOF 2018-07-24 14:10:42 -07:00
wireless cfg80211: call disconnect_wk when AP stops 2019-02-01 11:12:50 +01:00
x25 net/x25: handle call collisions 2018-11-29 14:25:36 -08:00
xdp xsk: Check if a queue exists during umem setup 2019-01-15 20:51:57 +01:00
xfrm xfrm: Make set-mark default behavior backward compatible 2019-01-16 13:10:55 +01:00
Kconfig net: convert bridge_nf to use skb extension infrastructure 2018-12-19 11:21:37 -08:00
Makefile
compat.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
socket.c net: socket: make bond ioctls go through compat_ifreq_ioctl() 2019-01-30 10:19:31 -08:00
sysctl_net.c