net: fix build errors if ipv6 is disabled

CONFIG_IPV6=n is still a valid choice ;)

It appears we can remove dead code.

Reported-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/ip6_checksum.h b/include/net/ip6_checksum.h
index 1944406..9e3c540 100644 (file)
--- a/include/net/ip6_checksum.h
+++ b/include/net/ip6_checksum.h
@@ -66,12 +66,14 @@ static inline void __tcp_v6_send_check(struct sk_buff *skb,
        }
 }
 
+#if IS_ENABLED(CONFIG_IPV6)
 static inline void tcp_v6_send_check(struct sock *sk, struct sk_buff *skb)
 {
        struct ipv6_pinfo *np = inet6_sk(sk);
 
        __tcp_v6_send_check(skb, &np->saddr, &sk->sk_v6_daddr);
 }
+#endif
 
 int udp6_csum_init(struct sk_buff *skb, struct udphdr *uh, int proto);
 #endif

diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index ccefc07..9afbdb1 100644 (file)
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -415,10 +415,12 @@ int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
                 (int)sk->sk_bound_dev_if);
 
        err = 0;
-       if ((sk->sk_family == AF_INET && isk->inet_rcv_saddr) ||
-           (sk->sk_family == AF_INET6 &&
-            !ipv6_addr_any(&sk->sk_v6_rcv_saddr)))
+       if (sk->sk_family == AF_INET && isk->inet_rcv_saddr)
                sk->sk_userlocks |= SOCK_BINDADDR_LOCK;
+#if IS_ENABLED(CONFIG_IPV6)
+       if (sk->sk_family == AF_INET6 && !ipv6_addr_any(&sk->sk_v6_rcv_saddr))
+               sk->sk_userlocks |= SOCK_BINDADDR_LOCK;
+#endif
 
        if (snum)
                sk->sk_userlocks |= SOCK_BINDPORT_LOCK;

diff --git a/net/ipv4/tcp_metrics.c b/net/ipv4/tcp_metrics.c
index 27535fd..8fcc2cb 100644 (file)
--- a/net/ipv4/tcp_metrics.c
+++ b/net/ipv4/tcp_metrics.c
@@ -251,10 +251,12 @@ static struct tcp_metrics_block *__tcp_get_metrics_tw(struct inet_timewait_sock
                addr.addr.a4 = tw->tw_daddr;
                hash = (__force unsigned int) addr.addr.a4;
                break;
+#if IS_ENABLED(CONFIG_IPV6)
        case AF_INET6:
                *(struct in6_addr *)addr.addr.a6 = tw->tw_v6_daddr;
                hash = ipv6_addr_hash(&tw->tw_v6_daddr);
                break;
+#endif
        default:
                return NULL;
        }
@@ -286,10 +288,12 @@ static struct tcp_metrics_block *tcp_get_metrics(struct sock *sk,
                addr.addr.a4 = inet_sk(sk)->inet_daddr;
                hash = (__force unsigned int) addr.addr.a4;
                break;
+#if IS_ENABLED(CONFIG_IPV6)
        case AF_INET6:
                *(struct in6_addr *)addr.addr.a6 = sk->sk_v6_daddr;
                hash = ipv6_addr_hash(&sk->sk_v6_daddr);
                break;
+#endif
        default:
                return NULL;
        }

diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 0045c7c..b6e59f0 100644 (file)
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -291,12 +291,14 @@ static int svc_one_sock_name(struct svc_sock *svsk, char *buf, int remaining)
                                &inet_sk(sk)->inet_rcv_saddr,
                                inet_sk(sk)->inet_num);
                break;
+#if IS_ENABLED(CONFIG_IPV6)
        case PF_INET6:
                len = snprintf(buf, remaining, "ipv6 %s %pI6 %d\n",
                                proto_name,
                                &sk->sk_v6_rcv_saddr,
                                inet_sk(sk)->inet_num);
                break;
+#endif
        default:
                len = snprintf(buf, remaining, "*unknown-%d*\n",
                                sk->sk_family);

diff --git a/security/lsm_audit.c b/security/lsm_audit.c
index 80554fc..234bc2a 100644 (file)
--- a/security/lsm_audit.c
+++ b/security/lsm_audit.c
@@ -302,6 +302,7 @@ static void dump_common_audit_data(struct audit_buffer *ab,
                                                "faddr", "fport");
                                break;
                        }
+#if IS_ENABLED(CONFIG_IPV6)
                        case AF_INET6: {
                                struct inet_sock *inet = inet_sk(sk);
 
@@ -313,6 +314,7 @@ static void dump_common_audit_data(struct audit_buffer *ab,
                                                "faddr", "fport");
                                break;
                        }
+#endif
                        case AF_UNIX:
                                u = unix_sk(sk);
                                if (u->path.dentry) {