* [PATCH v3] net: inet: diag: expose sockets cgroup classid
@ 2017-08-17 0:35 Levin, Alexander (Sasha Levin)
2017-08-18 23:11 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Levin, Alexander (Sasha Levin) @ 2017-08-17 0:35 UTC (permalink / raw)
To: davem
Cc: xiyou.wangcong, netdev, linux-kernel, Levin,
Alexander (Sasha Levin), Levin, Alexander (Sasha Levin)
From: "Levin, Alexander (Sasha Levin)" <alexander.levin@one.verizon.com>
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>
---
include/uapi/linux/inet_diag.h | 1 +
net/ipv4/inet_diag.c | 11 +++++++++++
2 files changed, 12 insertions(+)
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;
--
2.11.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v3] net: inet: diag: expose sockets cgroup classid
2017-08-17 0:35 [PATCH v3] net: inet: diag: expose sockets cgroup classid Levin, Alexander (Sasha Levin)
@ 2017-08-18 23:11 ` David Miller
0 siblings, 0 replies; 2+ messages in thread
From: David Miller @ 2017-08-18 23:11 UTC (permalink / raw)
To: alexander.levin; +Cc: xiyou.wangcong, netdev, linux-kernel
From: "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com>
Date: Thu, 17 Aug 2017 00:35:11 +0000
> From: "Levin, Alexander (Sasha Levin)" <alexander.levin@one.verizon.com>
>
> 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>
Applied to net-next, thanks.
^ permalink raw reply [flat|nested] 2+ messages in thread
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