Merge branch 'stable-4.8' of git://git.infradead.org/users/pcmoore/selinux into next

[platform/kernel/linux-exynos.git] / net / dccp / ipv6.c

diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index 3381748..01bacf5 100644 (file)
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -80,8 +80,8 @@ static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 
        if (skb->len < offset + sizeof(*dh) ||
            skb->len < offset + __dccp_basic_hdr_len(dh)) {
-               ICMP6_INC_STATS_BH(net, __in6_dev_get(skb->dev),
-                                  ICMP6_MIB_INERRORS);
+               __ICMP6_INC_STATS(net, __in6_dev_get(skb->dev),
+                                 ICMP6_MIB_INERRORS);
                return;
        }
 
@@ -91,8 +91,8 @@ static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
                                        inet6_iif(skb));
 
        if (!sk) {
-               ICMP6_INC_STATS_BH(net, __in6_dev_get(skb->dev),
-                                  ICMP6_MIB_INERRORS);
+               __ICMP6_INC_STATS(net, __in6_dev_get(skb->dev),
+                                 ICMP6_MIB_INERRORS);
                return;
        }
 
@@ -106,7 +106,7 @@ static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 
        bh_lock_sock(sk);
        if (sock_owned_by_user(sk))
-               NET_INC_STATS_BH(net, LINUX_MIB_LOCKDROPPEDICMPS);
+               __NET_INC_STATS(net, LINUX_MIB_LOCKDROPPEDICMPS);
 
        if (sk->sk_state == DCCP_CLOSED)
                goto out;
@@ -114,7 +114,7 @@ static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
        dp = dccp_sk(sk);
        if ((1 << sk->sk_state) & ~(DCCPF_REQUESTING | DCCPF_LISTEN) &&
            !between48(seq, dp->dccps_awl, dp->dccps_awh)) {
-               NET_INC_STATS_BH(net, LINUX_MIB_OUTOFWINDOWICMPS);
+               __NET_INC_STATS(net, LINUX_MIB_OUTOFWINDOWICMPS);
                goto out;
        }
 
@@ -156,7 +156,7 @@ static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
        case DCCP_RESPOND:  /* Cannot happen.
                               It can, it SYNs are crossed. --ANK */
                if (!sock_owned_by_user(sk)) {
-                       DCCP_INC_STATS_BH(DCCP_MIB_ATTEMPTFAILS);
+                       __DCCP_INC_STATS(DCCP_MIB_ATTEMPTFAILS);
                        sk->sk_err = err;
                        /*
                         * Wake people up to see the error
@@ -281,8 +281,8 @@ static void dccp_v6_ctl_send_reset(const struct sock *sk, struct sk_buff *rxskb)
        if (!IS_ERR(dst)) {
                skb_dst_set(skb, dst);
                ip6_xmit(ctl_sk, skb, &fl6, NULL, 0);
-               DCCP_INC_STATS_BH(DCCP_MIB_OUTSEGS);
-               DCCP_INC_STATS_BH(DCCP_MIB_OUTRSTS);
+               DCCP_INC_STATS(DCCP_MIB_OUTSEGS);
+               DCCP_INC_STATS(DCCP_MIB_OUTRSTS);
                return;
        }
 
@@ -382,7 +382,7 @@ static int dccp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
 drop_and_free:
        reqsk_free(req);
 drop:
-       DCCP_INC_STATS_BH(DCCP_MIB_ATTEMPTFAILS);
+       __DCCP_INC_STATS(DCCP_MIB_ATTEMPTFAILS);
        return -1;
 }
 
@@ -533,11 +533,11 @@ static struct sock *dccp_v6_request_recv_sock(const struct sock *sk,
        return newsk;
 
 out_overflow:
-       NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENOVERFLOWS);
+       __NET_INC_STATS(sock_net(sk), LINUX_MIB_LISTENOVERFLOWS);
 out_nonewsk:
        dst_release(dst);
 out:
-       NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS);
+       __NET_INC_STATS(sock_net(sk), LINUX_MIB_LISTENDROPS);
        return NULL;
 }
 
@@ -648,6 +648,7 @@ discard:
 static int dccp_v6_rcv(struct sk_buff *skb)
 {
        const struct dccp_hdr *dh;
+       bool refcounted;
        struct sock *sk;
        int min_cov;
 
@@ -676,7 +677,7 @@ static int dccp_v6_rcv(struct sk_buff *skb)
 lookup:
        sk = __inet6_lookup_skb(&dccp_hashinfo, skb, __dccp_hdr_len(dh),
                                dh->dccph_sport, dh->dccph_dport,
-                               inet6_iif(skb));
+                               inet6_iif(skb), &refcounted);
        if (!sk) {
                dccp_pr_debug("failed to look up flow ID in table and "
                              "get corresponding socket\n");
@@ -705,6 +706,7 @@ lookup:
                        goto lookup;
                }
                sock_hold(sk);
+               refcounted = true;
                nsk = dccp_check_req(sk, skb, req);
                if (!nsk) {
                        reqsk_put(req);
@@ -758,7 +760,8 @@ discard_it:
        return 0;
 
 discard_and_relse:
-       sock_put(sk);
+       if (refcounted)
+               sock_put(sk);
        goto discard_it;
 }
 
@@ -871,7 +874,7 @@ static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
        fl6.fl6_sport = inet->inet_sport;
        security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
 
-       opt = rcu_dereference_protected(np->opt, sock_owned_by_user(sk));
+       opt = rcu_dereference_protected(np->opt, lockdep_sock_is_held(sk));
        final_p = fl6_update_dst(&fl6, opt, &final);
 
        dst = ip6_dst_lookup_flow(sk, &fl6, final_p);