From f65c1b534b99aef1809b893387b295963821549f Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Thu, 15 Dec 2011 02:43:44 +0000 Subject: sock_diag: Generalize requests cookies managements The sk address is used as a cookie between dump/get_exact calls. It will be required for unix socket sdumping, so move it from inet_diag to sock_diag. Signed-off-by: Pavel Emelyanov Signed-off-by: David S. Miller --- net/ipv4/inet_diag.c | 23 ++++------------------- net/ipv4/udp_diag.c | 2 +- 2 files changed, 5 insertions(+), 20 deletions(-) (limited to 'net/ipv4') diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c index fa27313765f3..fb2e47ff59f7 100644 --- a/net/ipv4/inet_diag.c +++ b/net/ipv4/inet_diag.c @@ -102,8 +102,7 @@ int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk, r->idiag_retrans = 0; r->id.idiag_if = sk->sk_bound_dev_if; - r->id.idiag_cookie[0] = (u32)(unsigned long)sk; - r->id.idiag_cookie[1] = (u32)(((unsigned long)sk >> 31) >> 1); + sock_diag_save_cookie(sk, r->id.idiag_cookie); r->id.idiag_sport = inet->inet_sport; r->id.idiag_dport = inet->inet_dport; @@ -221,8 +220,7 @@ static int inet_twsk_diag_fill(struct inet_timewait_sock *tw, r->idiag_family = tw->tw_family; r->idiag_retrans = 0; r->id.idiag_if = tw->tw_bound_dev_if; - r->id.idiag_cookie[0] = (u32)(unsigned long)tw; - r->id.idiag_cookie[1] = (u32)(((unsigned long)tw >> 31) >> 1); + sock_diag_save_cookie(tw, r->id.idiag_cookie); r->id.idiag_sport = tw->tw_sport; r->id.idiag_dport = tw->tw_dport; r->id.idiag_src[0] = tw->tw_rcv_saddr; @@ -261,18 +259,6 @@ static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, return inet_csk_diag_fill(sk, skb, r, pid, seq, nlmsg_flags, unlh); } -int inet_diag_check_cookie(struct sock *sk, struct inet_diag_req *req) -{ - if ((req->id.idiag_cookie[0] != INET_DIAG_NOCOOKIE || - req->id.idiag_cookie[1] != INET_DIAG_NOCOOKIE) && - ((u32)(unsigned long)sk != req->id.idiag_cookie[0] || - (u32)((((unsigned long)sk) >> 31) >> 1) != req->id.idiag_cookie[1])) - return -ESTALE; - else - return 0; -} -EXPORT_SYMBOL_GPL(inet_diag_check_cookie); - int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *in_skb, const struct nlmsghdr *nlh, struct inet_diag_req *req) { @@ -304,7 +290,7 @@ int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *in_s if (sk == NULL) goto out_nosk; - err = inet_diag_check_cookie(sk, req); + err = sock_diag_check_cookie(sk, req->id.idiag_cookie); if (err) goto out; @@ -617,8 +603,7 @@ static int inet_diag_fill_req(struct sk_buff *skb, struct sock *sk, r->idiag_retrans = req->retrans; r->id.idiag_if = sk->sk_bound_dev_if; - r->id.idiag_cookie[0] = (u32)(unsigned long)req; - r->id.idiag_cookie[1] = (u32)(((unsigned long)req >> 31) >> 1); + sock_diag_save_cookie(req, r->id.idiag_cookie); tmo = req->expires - jiffies; if (tmo < 0) diff --git a/net/ipv4/udp_diag.c b/net/ipv4/udp_diag.c index fe9db8675acb..69f8a7ca63dd 100644 --- a/net/ipv4/udp_diag.c +++ b/net/ipv4/udp_diag.c @@ -57,7 +57,7 @@ static int udp_dump_one(struct udp_table *tbl, struct sk_buff *in_skb, if (sk == NULL) goto out_nosk; - err = inet_diag_check_cookie(sk, req); + err = sock_diag_check_cookie(sk, req->id.idiag_cookie); if (err) goto out; -- cgit v1.2.3-59-g8ed1b