Commit 0888e372 authored by Levin, Alexander (Sasha Levin)'s avatar Levin, Alexander (Sasha Levin) Committed by David S. Miller
Browse files

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: default avatarSasha Levin <alexander.levin@verizon.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f21e5077

include/uapi/linux/inet_diag.h

+1 −0
Original line number Diff line number Diff line
@@ -142,6 +142,7 @@ enum { 
	INET_DIAG_PAD,

	INET_DIAG_MARK,

	INET_DIAG_BBRINFO,

	INET_DIAG_CLASS_ID,

	__INET_DIAG_MAX,

};

net/ipv4/inet_diag.c

+11 −0
Original line number Diff line number Diff line
@@ -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;