diff options
Diffstat (limited to 'net/rds/tcp.c')
| -rw-r--r-- | net/rds/tcp.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/net/rds/tcp.c b/net/rds/tcp.c index f23925af0b8d..2c7b7c352d3e 100644 --- a/net/rds/tcp.c +++ b/net/rds/tcp.c @@ -51,7 +51,9 @@ static LIST_HEAD(rds_tcp_tc_list); * rds6_tcp_tc_count counts both IPv4 and IPv6 connections. */ static unsigned int rds_tcp_tc_count; +#if IS_ENABLED(CONFIG_IPV6) static unsigned int rds6_tcp_tc_count; +#endif /* Track rds_tcp_connection structs so they can be cleaned up */ static DEFINE_SPINLOCK(rds_tcp_conn_lock); @@ -118,7 +120,9 @@ void rds_tcp_restore_callbacks(struct socket *sock, /* done under the callback_lock to serialize with write_space */ spin_lock(&rds_tcp_tc_list_lock); list_del_init(&tc->t_list_item); +#if IS_ENABLED(CONFIG_IPV6) rds6_tcp_tc_count--; +#endif if (!tc->t_cpath->cp_conn->c_isv6) rds_tcp_tc_count--; spin_unlock(&rds_tcp_tc_list_lock); @@ -207,7 +211,9 @@ void rds_tcp_set_callbacks(struct socket *sock, struct rds_conn_path *cp) /* done under the callback_lock to serialize with write_space */ spin_lock(&rds_tcp_tc_list_lock); list_add_tail(&tc->t_list_item, &rds_tcp_tc_list); +#if IS_ENABLED(CONFIG_IPV6) rds6_tcp_tc_count++; +#endif if (!tc->t_cpath->cp_conn->c_isv6) rds_tcp_tc_count++; spin_unlock(&rds_tcp_tc_list_lock); @@ -273,6 +279,7 @@ out: spin_unlock_irqrestore(&rds_tcp_tc_list_lock, flags); } +#if IS_ENABLED(CONFIG_IPV6) /* Handle RDS6_INFO_TCP_SOCKETS socket option. It returns both IPv4 and * IPv6 connections. IPv4 connection address is returned in an IPv4 mapped * address. @@ -314,12 +321,15 @@ out: spin_unlock_irqrestore(&rds_tcp_tc_list_lock, flags); } +#endif static int rds_tcp_laddr_check(struct net *net, const struct in6_addr *addr, __u32 scope_id) { struct net_device *dev = NULL; +#if IS_ENABLED(CONFIG_IPV6) int ret; +#endif if (ipv6_addr_v4mapped(addr)) { if (inet_addr_type(net, addr->s6_addr32[3]) == RTN_LOCAL) @@ -340,9 +350,11 @@ static int rds_tcp_laddr_check(struct net *net, const struct in6_addr *addr, } rcu_read_unlock(); } +#if IS_ENABLED(CONFIG_IPV6) ret = ipv6_chk_addr(net, addr, dev, 0); if (ret) return 0; +#endif return -EADDRNOTAVAIL; } @@ -545,18 +557,27 @@ static __net_init int rds_tcp_init_net(struct net *net) err = -ENOMEM; goto fail; } + +#if IS_ENABLED(CONFIG_IPV6) rtn->rds_tcp_listen_sock = rds_tcp_listen_init(net, true); +#else + rtn->rds_tcp_listen_sock = rds_tcp_listen_init(net, false); +#endif if (!rtn->rds_tcp_listen_sock) { pr_warn("could not set up IPv6 listen sock\n"); +#if IS_ENABLED(CONFIG_IPV6) /* Try IPv4 as some systems disable IPv6 */ rtn->rds_tcp_listen_sock = rds_tcp_listen_init(net, false); if (!rtn->rds_tcp_listen_sock) { +#endif unregister_net_sysctl_table(rtn->rds_tcp_sysctl); rtn->rds_tcp_sysctl = NULL; err = -EAFNOSUPPORT; goto fail; +#if IS_ENABLED(CONFIG_IPV6) } +#endif } INIT_WORK(&rtn->rds_tcp_accept_w, rds_tcp_accept_worker); return 0; @@ -670,7 +691,9 @@ static void rds_tcp_exit(void) rds_tcp_set_unloading(); synchronize_rcu(); rds_info_deregister_func(RDS_INFO_TCP_SOCKETS, rds_tcp_tc_info); +#if IS_ENABLED(CONFIG_IPV6) rds_info_deregister_func(RDS6_INFO_TCP_SOCKETS, rds6_tcp_tc_info); +#endif unregister_pernet_device(&rds_tcp_net_ops); rds_tcp_destroy_conns(); rds_trans_unregister(&rds_tcp_transport); @@ -702,7 +725,9 @@ static int rds_tcp_init(void) rds_trans_register(&rds_tcp_transport); rds_info_register_func(RDS_INFO_TCP_SOCKETS, rds_tcp_tc_info); +#if IS_ENABLED(CONFIG_IPV6) rds_info_register_func(RDS6_INFO_TCP_SOCKETS, rds6_tcp_tc_info); +#endif goto out; out_recv: |