From 76d0eeb1a1579453cfd7c4da22004d4b34187ab4 Mon Sep 17 00:00:00 2001
From: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Date: Thu, 25 Apr 2013 06:53:53 +0000
Subject: [PATCH] packet_diag: disclose meminfo values
sk_rmem_alloc is disclosed via /proc/net/packet but not via netlink messages.
The goal is to have the same level of information.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
include/uapi/linux/packet_diag.h | 2 ++
net/packet/diag.c | 4 ++++
2 files changed, 6 insertions(+)
diff --git a/include/uapi/linux/packet_diag.h b/include/uapi/linux/packet_diag.h
index 84f83a47b6f6..c0802c18c8ad 100644
--- a/include/uapi/linux/packet_diag.h
+++ b/include/uapi/linux/packet_diag.h
@@ -16,6 +16,7 @@ struct packet_diag_req {
#define PACKET_SHOW_MCLIST 0x00000002 /* A set of packet_diag_mclist-s */
#define PACKET_SHOW_RING_CFG 0x00000004 /* Rings configuration parameters */
#define PACKET_SHOW_FANOUT 0x00000008
+#define PACKET_SHOW_MEMINFO 0x00000010
struct packet_diag_msg {
__u8 pdiag_family;
@@ -33,6 +34,7 @@ enum {
PACKET_DIAG_TX_RING,
PACKET_DIAG_FANOUT,
PACKET_DIAG_UID,
+ PACKET_DIAG_MEMINFO,
__PACKET_DIAG_MAX,
};
diff --git a/net/packet/diag.c b/net/packet/diag.c
index 04c8219a2d06..822fe9b33a49 100644
--- a/net/packet/diag.c
+++ b/net/packet/diag.c
@@ -166,6 +166,10 @@ static int sk_diag_fill(struct sock *sk, struct sk_buff *skb,
pdiag_put_fanout(po, skb))
goto out_nlmsg_trim;
+ if ((req->pdiag_show & PACKET_SHOW_MEMINFO) &&
+ sock_diag_put_meminfo(sk, skb, PACKET_DIAG_MEMINFO))
+ goto out_nlmsg_trim;
+
return nlmsg_end(skb, nlh);
out_nlmsg_trim: