path: root/net/ipv4/tcp_diag.c
diff options
authorCraig Gallek <kraig@google.com>2015-06-15 11:26:20 -0400
committerDavid S. Miller <davem@davemloft.net>2015-06-15 19:49:22 -0700
commit35ac838a9b96470f999db04320f53a2033642bfb (patch)
tree19ed0663ecfc90d53e8a449f28b25206e0c9a5f6 /net/ipv4/tcp_diag.c
parentsock_diag: specify info_size per inet protocol (diff)
sock_diag: implement a get_info handler for inet
This get_info handler will simply dispatch to the appropriate existing inet protocol handler. This patch also includes a new netlink attribute (INET_DIAG_PROTOCOL). This attribute is currently only used for multicast messages. Without this attribute, there is no way of knowing the IP protocol used by the socket information being broadcast. This attribute is not necessary in the 'dump' variant of this protocol (though it could easily be added) because dump requests are issued for specific family/protocol pairs. Tested: ss -E (note, the -E option has not yet been merged into the upstream version of ss). Signed-off-by: Craig Gallek <kraig@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_diag.c')
1 files changed, 3 insertions, 2 deletions
diff --git a/net/ipv4/tcp_diag.c b/net/ipv4/tcp_diag.c
index 423e3881a40b..479f34946177 100644
--- a/net/ipv4/tcp_diag.c
+++ b/net/ipv4/tcp_diag.c
@@ -19,13 +19,14 @@
static void tcp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
void *_info)
- const struct tcp_sock *tp = tcp_sk(sk);
struct tcp_info *info = _info;
if (sk->sk_state == TCP_LISTEN) {
r->idiag_rqueue = sk->sk_ack_backlog;
r->idiag_wqueue = sk->sk_max_ack_backlog;
- } else {
+ } else if (sk->sk_type == SOCK_STREAM) {
+ const struct tcp_sock *tp = tcp_sk(sk);
r->idiag_rqueue = max_t(int, tp->rcv_nxt - tp->copied_seq, 0);
r->idiag_wqueue = tp->write_seq - tp->snd_una;