kernel/linux.git/net/ipv6/ping.c, branch v5.18

net: ping6: support setting basic SOL_IPV6 options via cmsg

2022-02-17T14:22:09+00:00

Support setting IPV6_HOPLIMIT, IPV6_TCLASS, IPV6_DONTFRAG during sendmsg via SOL_IPV6 cmsgs. tclass and dontfrag are init'ed from struct ipv6_pinfo in ipcm6_init_sk(), while hlimit is inited to -1, so we need to handle it being populated via cmsg explicitly. Leave extension headers and flowlabel unimplemented. Those are slightly more laborious to test and users seem to primarily care about IPV6_TCLASS. Signed-off-by: Jakub Kicinski Signed-off-by: David S. Miller

net: ping6: support setting socket options via cmsg

2022-02-10T15:04:51+00:00

Minor reordering of the code and a call to sock_cmsg_send() gives us support for setting the common socket options via cmsg (the usual ones - SO_MARK, SO_TIMESTAMPING_OLD, SCM_TXTIME). Signed-off-by: Jakub Kicinski Reviewed-by: David Ahern Signed-off-by: David S. Miller

net: ping6: support packet timestamping

2022-02-10T15:04:51+00:00

Nothing prevents the user from requesting timestamping on ping6 sockets, yet timestamps are not going to be reported. Plumb the flags through. Signed-off-by: Jakub Kicinski Reviewed-by: David Ahern Signed-off-by: David S. Miller

net: ping6: remove a pr_debug() statement

2022-02-10T15:04:51+00:00

We have ftrace and BPF today, there's no need for printing arguments at the start of a function. Signed-off-by: Jakub Kicinski Reviewed-by: David Ahern Signed-off-by: David S. Miller

net: bpf: Handle return value of BPF_CGROUP_RUN_PROG_INET{4,6}_POST_BIND()

2022-01-07T01:08:35+00:00

The return value of BPF_CGROUP_RUN_PROG_INET{4,6}_POST_BIND() in __inet_bind() is not handled properly. While the return value is non-zero, it will set inet_saddr and inet_rcv_saddr to 0 and exit: err = BPF_CGROUP_RUN_PROG_INET4_POST_BIND(sk); if (err) { inet->inet_saddr = inet->inet_rcv_saddr = 0; goto out_release_sock; } Let's take UDP for example and see what will happen. For UDP socket, it will be added to 'udp_prot.h.udp_table->hash' and 'udp_prot.h.udp_table->hash2' after the sk->sk_prot->get_port() called success. If 'inet->inet_rcv_saddr' is specified here, then 'sk' will be in the 'hslot2' of 'hash2' that it don't belong to (because inet_saddr is changed to 0), and UDP packet received will not be passed to this sock. If 'inet->inet_rcv_saddr' is not specified here, the sock will work fine, as it can receive packet properly, which is wired, as the 'bind()' is already failed. To undo the get_port() operation, introduce the 'put_port' field for 'struct proto'. For TCP proto, it is inet_put_port(); For UDP proto, it is udp_lib_unhash(); For icmp proto, it is ping_unhash(). Therefore, after sys_bind() fail caused by BPF_CGROUP_RUN_PROG_INET4_POST_BIND(), it will be unbinded, which means that it can try to be binded to another port. Signed-off-by: Menglong Dong Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20220106132022.3470772-2-imagedong@tencent.com

lsm,selinux: pass flowi_common instead of flowi to the LSM hooks

2020-11-23T23:36:21+00:00

As pointed out by Herbert in a recent related patch, the LSM hooks do not have the necessary address family information to use the flowi struct safely. As none of the LSMs currently use any of the protocol specific flowi information, replace the flowi pointers with pointers to the address family independent flowi_common struct. Reported-by: Herbert Xu Acked-by: James Morris Signed-off-by: Paul Moore

ipv6/ping: set skb->mark on icmpv6 sockets

2020-07-03T21:36:04+00:00

IPv6 ping sockets route based on fwmark, but do not yet set skb->mark. Add this. IPv4 ping sockets also do both. Signed-off-by: Willem de Bruijn Signed-off-by: David S. Miller

ipv6: Fix the link time qualifier of 'ping_v6_proc_exit_net()'

2019-09-12T10:20:33+00:00

The '.exit' functions from 'pernet_operations' structure should be marked as __net_exit, not __net_init. Fixes: d862e5461423 ("net: ipv6: Implement /proc/net/icmp6.") Signed-off-by: Christophe JAILLET Signed-off-by: David S. Miller

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32+00:00

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman

ipv6: fold sockcm_cookie into ipcm6_cookie

2018-07-07T01:58:49+00:00

ipcm_cookie includes sockcm_cookie. Do the same for ipcm6_cookie. This reduces the number of arguments that need to be passed around, applies ipcm6_init to all cookie fields at once and reduces code differentiation between ipv4 and ipv6. Signed-off-by: Willem de Bruijn Signed-off-by: David S. Miller