diff options
| -rw-r--r-- | include/linux/ipv6.h | 18 | ||||
| -rw-r--r-- | include/net/inet_sock.h | 1 | ||||
| -rw-r--r-- | include/net/sock.h | 2 | ||||
| -rw-r--r-- | net/core/sock.c | 4 | ||||
| -rw-r--r-- | net/ipv6/af_inet6.c | 2 | ||||
| -rw-r--r-- | net/ipv6/ipv6_sockglue.c | 18 | ||||
| -rw-r--r-- | net/ipv6/ndisc.c | 2 | ||||
| -rw-r--r-- | net/netfilter/ipvs/ip_vs_sync.c | 8 |
8 files changed, 30 insertions, 25 deletions
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h index c2e087071384..68cf1ca94914 100644 --- a/include/linux/ipv6.h +++ b/include/linux/ipv6.h @@ -218,11 +218,9 @@ struct ipv6_pinfo { #if defined(__BIG_ENDIAN_BITFIELD) /* Packed in 16bits. */ __s16 mcast_hops:9; - __u16 __unused_2:6, - mc_loop:1; + __u16 __unused_2:7, #else - __u16 mc_loop:1, - __unused_2:6; + __u16 __unused_2:7; __s16 mcast_hops:9; #endif int ucast_oif; @@ -283,6 +281,18 @@ struct ipv6_pinfo { struct inet6_cork cork; }; +/* We currently use available bits from inet_sk(sk)->inet_flags, + * this could change in the future. + */ +#define inet6_test_bit(nr, sk) \ + test_bit(INET_FLAGS_##nr, &inet_sk(sk)->inet_flags) +#define inet6_set_bit(nr, sk) \ + set_bit(INET_FLAGS_##nr, &inet_sk(sk)->inet_flags) +#define inet6_clear_bit(nr, sk) \ + clear_bit(INET_FLAGS_##nr, &inet_sk(sk)->inet_flags) +#define inet6_assign_bit(nr, sk, val) \ + assign_bit(INET_FLAGS_##nr, &inet_sk(sk)->inet_flags, val) + /* WARNING: don't change the layout of the members in {raw,udp,tcp}6_sock! */ struct raw6_sock { /* inet_sock has to be the first member of raw6_sock */ diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h index 2de0e4d4a027..b5a9dca92fb4 100644 --- a/include/net/inet_sock.h +++ b/include/net/inet_sock.h @@ -268,6 +268,7 @@ enum { INET_FLAGS_NODEFRAG = 17, INET_FLAGS_BIND_ADDRESS_NO_PORT = 18, INET_FLAGS_DEFER_CONNECT = 19, + INET_FLAGS_MC6_LOOP = 20, }; /* cmsg flags for inet */ diff --git a/include/net/sock.h b/include/net/sock.h index 676146e9d181..56ac1abadea5 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -2238,7 +2238,7 @@ static inline void sock_confirm_neigh(struct sk_buff *skb, struct neighbour *n) } } -bool sk_mc_loop(struct sock *sk); +bool sk_mc_loop(const struct sock *sk); static inline bool sk_can_gso(const struct sock *sk) { diff --git a/net/core/sock.c b/net/core/sock.c index bb89b88bc1e8..213a62ac13f2 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -759,7 +759,7 @@ out: return ret; } -bool sk_mc_loop(struct sock *sk) +bool sk_mc_loop(const struct sock *sk) { if (dev_recursion_level()) return false; @@ -771,7 +771,7 @@ bool sk_mc_loop(struct sock *sk) return inet_test_bit(MC_LOOP, sk); #if IS_ENABLED(CONFIG_IPV6) case AF_INET6: - return inet6_sk(sk)->mc_loop; + return inet6_test_bit(MC6_LOOP, sk); #endif } WARN_ON_ONCE(1); diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index 368824fe9719..bbd4aa1b96d0 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -217,7 +217,7 @@ lookup_protocol: inet_sk(sk)->pinet6 = np = inet6_sk_generic(sk); np->hop_limit = -1; np->mcast_hops = IPV6_DEFAULT_MCASTHOPS; - np->mc_loop = 1; + inet6_set_bit(MC6_LOOP, sk); np->mc_all = 1; np->pmtudisc = IPV6_PMTUDISC_WANT; np->repflow = net->ipv6.sysctl.flowlabel_reflect & FLOWLABEL_REFLECT_ESTABLISHED; diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index f27993a1470d..755fac85a120 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -424,6 +424,13 @@ int do_ipv6_setsockopt(struct sock *sk, int level, int optname, return -EINVAL; WRITE_ONCE(np->hop_limit, val); return 0; + case IPV6_MULTICAST_LOOP: + if (optlen < sizeof(int)) + return -EINVAL; + if (val != valbool) + return -EINVAL; + inet6_assign_bit(MC6_LOOP, sk, valbool); + return 0; } if (needs_rtnl) rtnl_lock(); @@ -755,15 +762,6 @@ done: retv = 0; break; - case IPV6_MULTICAST_LOOP: - if (optlen < sizeof(int)) - goto e_inval; - if (val != valbool) - goto e_inval; - np->mc_loop = valbool; - retv = 0; - break; - case IPV6_UNICAST_IF: { struct net_device *dev = NULL; @@ -1367,7 +1365,7 @@ int do_ipv6_getsockopt(struct sock *sk, int level, int optname, } case IPV6_MULTICAST_LOOP: - val = np->mc_loop; + val = inet6_test_bit(MC6_LOOP, sk); break; case IPV6_MULTICAST_IF: diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index b554fd40bdc3..679443d7ecb5 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1996,7 +1996,7 @@ static int __net_init ndisc_net_init(struct net *net) np = inet6_sk(sk); np->hop_limit = 255; /* Do not loopback ndisc messages */ - np->mc_loop = 0; + inet6_clear_bit(MC6_LOOP, sk); return 0; } diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c index da5af28ff57b..3c2251cabd04 100644 --- a/net/netfilter/ipvs/ip_vs_sync.c +++ b/net/netfilter/ipvs/ip_vs_sync.c @@ -1298,17 +1298,13 @@ static void set_sock_size(struct sock *sk, int mode, int val) static void set_mcast_loop(struct sock *sk, u_char loop) { /* setsockopt(sock, SOL_IP, IP_MULTICAST_LOOP, &loop, sizeof(loop)); */ - lock_sock(sk); inet_assign_bit(MC_LOOP, sk, loop); #ifdef CONFIG_IP_VS_IPV6 - if (sk->sk_family == AF_INET6) { - struct ipv6_pinfo *np = inet6_sk(sk); - + if (READ_ONCE(sk->sk_family) == AF_INET6) { /* IPV6_MULTICAST_LOOP */ - np->mc_loop = loop ? 1 : 0; + inet6_assign_bit(MC6_LOOP, sk, loop); } #endif - release_sock(sk); } /* |