From 35ad91efa967d7ec1e400437409bc5181cd7f03e Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Tue, 6 Dec 2011 07:59:15 +0000 Subject: [PATCH] inet_diag: Introduce socket family checks The new API will specify family to work with. Teach the existing socket walking code to bypass not interesting ones. To preserve compatibility with existing behavior the _compat code sets interesting family to AF_UNSPEC to dump them all. Signed-off-by: Pavel Emelyanov Signed-off-by: David S. Miller --- net/ipv4/inet_diag.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c index 57a1bd97ea35e..2642f317af8f6 100644 --- a/net/ipv4/inet_diag.c +++ b/net/ipv4/inet_diag.c @@ -743,6 +743,10 @@ static int __inet_diag_dump(struct sk_buff *skb, struct netlink_callback *cb, continue; } + if (r->sdiag_family != AF_UNSPEC && + sk->sk_family != r->sdiag_family) + goto next_listen; + if (r->id.idiag_sport != inet->inet_sport && r->id.idiag_sport) goto next_listen; @@ -808,6 +812,9 @@ skip_listen_ht: goto next_normal; if (!(r->idiag_states & (1 << sk->sk_state))) goto next_normal; + if (r->sdiag_family != AF_UNSPEC && + sk->sk_family != r->sdiag_family) + goto next_normal; if (r->id.idiag_sport != inet->inet_sport && r->id.idiag_sport) goto next_normal; @@ -830,6 +837,9 @@ next_normal: if (num < s_num) goto next_dying; + if (r->sdiag_family != AF_UNSPEC && + tw->tw_family != r->sdiag_family) + goto next_dying; if (r->id.idiag_sport != tw->tw_sport && r->id.idiag_sport) goto next_dying; @@ -873,7 +883,7 @@ static int inet_diag_dump_compat(struct sk_buff *skb, struct netlink_callback *c struct nlattr *bc = NULL; int hdrlen = sizeof(struct inet_diag_req_compat); - req.sdiag_family = rc->idiag_family; + req.sdiag_family = AF_UNSPEC; /* compatibility */ req.sdiag_protocol = inet_diag_type2proto(cb->nlh->nlmsg_type); req.idiag_ext = rc->idiag_ext; req.idiag_states = rc->idiag_states; -- 2.39.5