diff options
| author | Levin, Alexander (Sasha Levin) <alexander.levin@one.verizon.com> | 2017-08-17 02:35:11 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-08-19 01:10:50 +0200 |
| commit | 0888e372c37fa31882c8ed89fb2f8188b08b6718 (patch) | |
| tree | efc001ab308929078bc49a5c673ccf8ae8f334f4 | |
| parent | macvlan: add offload features for encapsulation (diff) | |
| download | linux-0888e372c37fa31882c8ed89fb2f8188b08b6718.tar.xz linux-0888e372c37fa31882c8ed89fb2f8188b08b6718.zip | |
net: inet: diag: expose sockets cgroup classid
This is useful for directly looking up a task based on class id rather than
having to scan through all open file descriptors.
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/uapi/linux/inet_diag.h | 1 | ||||
| -rw-r--r-- | net/ipv4/inet_diag.c | 11 |
2 files changed, 12 insertions, 0 deletions
diff --git a/include/uapi/linux/inet_diag.h b/include/uapi/linux/inet_diag.h index bbe201047df6..678496897a68 100644 --- a/include/uapi/linux/inet_diag.h +++ b/include/uapi/linux/inet_diag.h @@ -142,6 +142,7 @@ enum { INET_DIAG_PAD, INET_DIAG_MARK, INET_DIAG_BBRINFO, + INET_DIAG_CLASS_ID, __INET_DIAG_MAX, }; diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c index 3828b3a805cd..67325d5832d7 100644 --- a/net/ipv4/inet_diag.c +++ b/net/ipv4/inet_diag.c @@ -274,6 +274,17 @@ int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk, goto errout; } + if (ext & (1 << (INET_DIAG_CLASS_ID - 1))) { + u32 classid = 0; + +#ifdef CONFIG_SOCK_CGROUP_DATA + classid = sock_cgroup_classid(&sk->sk_cgrp_data); +#endif + + if (nla_put_u32(skb, INET_DIAG_CLASS_ID, classid)) + goto errout; + } + out: nlmsg_end(skb, nlh); return 0; |