From 5d2e5f274f9e9a06fb934dd45260e2616a9992e6 Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Fri, 30 Dec 2011 00:53:13 +0000 Subject: sock_diag: Introduce the meminfo nla core (v2) Add a routine that dumps memory-related values of a socket. It's made as an array to make it possible to add more stuff here later without breaking compatibility. Since v1: The SK_MEMINFO_ constants are in userspace visible part of sock_diag.h, the rest is under __KERNEL__. Signed-off-by: Pavel Emelyanov Signed-off-by: David S. Miller --- net/core/sock_diag.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'net/core') diff --git a/net/core/sock_diag.c b/net/core/sock_diag.c index 711bdefe775..b9868e1fd62 100644 --- a/net/core/sock_diag.c +++ b/net/core/sock_diag.c @@ -4,6 +4,8 @@ #include #include #include +#include +#include #include #include @@ -31,6 +33,27 @@ void sock_diag_save_cookie(void *sk, __u32 *cookie) } EXPORT_SYMBOL_GPL(sock_diag_save_cookie); +int sock_diag_put_meminfo(struct sock *sk, struct sk_buff *skb, int attrtype) +{ + __u32 *mem; + + mem = RTA_DATA(__RTA_PUT(skb, attrtype, SK_MEMINFO_VARS * sizeof(__u32))); + + mem[SK_MEMINFO_RMEM_ALLOC] = sk_rmem_alloc_get(sk); + mem[SK_MEMINFO_RCVBUF] = sk->sk_rcvbuf; + mem[SK_MEMINFO_WMEM_ALLOC] = sk_wmem_alloc_get(sk); + mem[SK_MEMINFO_SNDBUF] = sk->sk_sndbuf; + mem[SK_MEMINFO_FWD_ALLOC] = sk->sk_forward_alloc; + mem[SK_MEMINFO_WMEM_QUEUED] = sk->sk_wmem_queued; + mem[SK_MEMINFO_OPTMEM] = atomic_read(&sk->sk_omem_alloc); + + return 0; + +rtattr_failure: + return -EMSGSIZE; +} +EXPORT_SYMBOL_GPL(sock_diag_put_meminfo); + void sock_diag_register_inet_compat(int (*fn)(struct sk_buff *skb, struct nlmsghdr *nlh)) { mutex_lock(&sock_diag_table_mutex); -- cgit v1.2.3