diff options
| author | David Ahern <dsa@cumulusnetworks.com> | 2016-12-01 08:48:04 -0800 |
|---|---|---|
| committer | Bruno Martins <bgcngm@gmail.com> | 2022-10-28 15:57:22 +0100 |
| commit | e7aede4896c0995c3c4312a9e90ff0ae304afc09 (patch) | |
| tree | 02147c18a823d20c88ca3731c9a896ce26537d19 /net/ipv6/af_inet6.c | |
| parent | 9ed75228b09cffe0cc61fa2dd490d6545a710e2c (diff) | |
bpf: Add new cgroup attach type to enable sock modifications
Add new cgroup based program type, BPF_PROG_TYPE_CGROUP_SOCK. Similar to
BPF_PROG_TYPE_CGROUP_SKB programs can be attached to a cgroup and run
any time a process in the cgroup opens an AF_INET or AF_INET6 socket.
Currently only sk_bound_dev_if is exported to userspace for modification
by a bpf program.
This allows a cgroup to be configured such that AF_INET{6} sockets opened
by processes are automatically bound to a specific device. In turn, this
enables the running of programs that do not support SO_BINDTODEVICE in a
specific VRF context / L3 domain.
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Change-Id: I96a6f6f8f650c494d8c173dbb42580a25698368e
Diffstat (limited to 'net/ipv6/af_inet6.c')
| -rw-r--r-- | net/ipv6/af_inet6.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index 1388afa28995..3cd9ad455910 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -263,6 +263,14 @@ lookup_protocol: goto out; } } + + if (!kern) { + err = BPF_CGROUP_RUN_PROG_INET_SOCK(sk); + if (err) { + sk_common_release(sk); + goto out; + } + } out: return err; out_rcu_unlock: |