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>

diff --git a/include/uapi/linux/packet_diag.h b/include/uapi/linux/packet_diag.h
index 84f83a4..c0802c1 100644 (file)
--- 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 04c8219..822fe9b 100644 (file)
--- 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: