ARM: rockchip_defconfig: enable DEVFREQ_GOV_SIMPLE_ONDEMAND

[firefly-linux-kernel-4.4.55.git] / net / ipv6 / ping.c

diff --git a/net/ipv6/ping.c b/net/ipv6/ping.c
index 2cfaedf032528ab6cb3f45b644d32fd3e32748b0..1737fc0f2988ceddc909c448da6ac8a3cdce42f6 100644 (file)
--- a/net/ipv6/ping.c
+++ b/net/ipv6/ping.c
@@ -84,7 +84,7 @@ int ping_v6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
        struct icmp6hdr user_icmph;
        int addr_type;
        struct in6_addr *daddr;
-       int iif = 0;
+       int oif = 0;
        struct flowi6 fl6;
        int err;
        int hlimit;
@@ -106,25 +106,30 @@ int ping_v6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
                if (u->sin6_family != AF_INET6) {
                        return -EAFNOSUPPORT;
                }
-               if (sk->sk_bound_dev_if &&
-                   sk->sk_bound_dev_if != u->sin6_scope_id) {
-                       return -EINVAL;
-               }
                daddr = &(u->sin6_addr);
-               iif = u->sin6_scope_id;
+               if (__ipv6_addr_needs_scope_id(ipv6_addr_type(daddr)))
+                       oif = u->sin6_scope_id;
        } else {
                if (sk->sk_state != TCP_ESTABLISHED)
                        return -EDESTADDRREQ;
                daddr = &sk->sk_v6_daddr;
        }
 
-       if (!iif)
-               iif = sk->sk_bound_dev_if;
+       if (!oif)
+               oif = sk->sk_bound_dev_if;
+
+       if (!oif)
+               oif = np->sticky_pktinfo.ipi6_ifindex;
+
+       if (!oif && ipv6_addr_is_multicast(daddr))
+               oif = np->mcast_oif;
+       else if (!oif)
+               oif = np->ucast_oif;
 
        addr_type = ipv6_addr_type(daddr);
-       if (__ipv6_addr_needs_scope_id(addr_type) && !iif)
-               return -EINVAL;
-       if (addr_type & IPV6_ADDR_MAPPED)
+       if ((__ipv6_addr_needs_scope_id(addr_type) && !oif) ||
+           (addr_type & IPV6_ADDR_MAPPED) ||
+           (oif && sk->sk_bound_dev_if && oif != sk->sk_bound_dev_if))
                return -EINVAL;
 
        /* TODO: use ip6_datagram_send_ctl to get options from cmsg */
@@ -134,30 +139,23 @@ int ping_v6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
        fl6.flowi6_proto = IPPROTO_ICMPV6;
        fl6.saddr = np->saddr;
        fl6.daddr = *daddr;
+       fl6.flowi6_oif = oif;
        fl6.flowi6_mark = sk->sk_mark;
-       fl6.flowi6_uid = sock_i_uid(sk);
+       fl6.flowi6_uid = sk->sk_uid;
        fl6.fl6_icmp_type = user_icmph.icmp6_type;
        fl6.fl6_icmp_code = user_icmph.icmp6_code;
        security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
 
-       if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr))
-               fl6.flowi6_oif = np->mcast_oif;
-       else if (!fl6.flowi6_oif)
-               fl6.flowi6_oif = np->ucast_oif;
-
        dst = ip6_sk_dst_lookup_flow(sk, &fl6,  daddr);
        if (IS_ERR(dst))
                return PTR_ERR(dst);
        rt = (struct rt6_info *) dst;
 
        np = inet6_sk(sk);
-       if (!np)
-               return -EBADF;
-
-       if (!fl6.flowi6_oif && ipv6_addr_is_multicast(&fl6.daddr))
-               fl6.flowi6_oif = np->mcast_oif;
-       else if (!fl6.flowi6_oif)
-               fl6.flowi6_oif = np->ucast_oif;
+       if (!np) {
+               err = -EBADF;
+               goto dst_err_out;
+       }
 
        pfh.icmph.type = user_icmph.icmp6_type;
        pfh.icmph.code = user_icmph.icmp6_code;
@@ -187,6 +185,9 @@ int ping_v6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
        }
        release_sock(sk);
 
+dst_err_out:
+       dst_release(dst);
+
        if (err)
                return err;