genetlink: make all genl_ops users const

[cascardo/linux.git] / net / ipv4 / tcp_metrics.c

diff --git a/net/ipv4/tcp_metrics.c b/net/ipv4/tcp_metrics.c
index 52f3c6b..8c121b5 100644 (file)
--- a/net/ipv4/tcp_metrics.c
+++ b/net/ipv4/tcp_metrics.c
@@ -215,13 +215,15 @@ static struct tcp_metrics_block *__tcp_get_metrics_req(struct request_sock *req,
        addr.family = req->rsk_ops->family;
        switch (addr.family) {
        case AF_INET:
-               addr.addr.a4 = inet_rsk(req)->rmt_addr;
+               addr.addr.a4 = inet_rsk(req)->ir_rmt_addr;
                hash = (__force unsigned int) addr.addr.a4;
                break;
+#if IS_ENABLED(CONFIG_IPV6)
        case AF_INET6:
-               *(struct in6_addr *)addr.addr.a6 = inet6_rsk(req)->rmt_addr;
-               hash = ipv6_addr_hash(&inet6_rsk(req)->rmt_addr);
+               *(struct in6_addr *)addr.addr.a6 = inet_rsk(req)->ir_v6_rmt_addr;
+               hash = ipv6_addr_hash(&inet_rsk(req)->ir_v6_rmt_addr);
                break;
+#endif
        default:
                return NULL;
        }
@@ -240,7 +242,6 @@ static struct tcp_metrics_block *__tcp_get_metrics_req(struct request_sock *req,
 
 static struct tcp_metrics_block *__tcp_get_metrics_tw(struct inet_timewait_sock *tw)
 {
-       struct inet6_timewait_sock *tw6;
        struct tcp_metrics_block *tm;
        struct inetpeer_addr addr;
        unsigned int hash;
@@ -252,11 +253,12 @@ 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:
-               tw6 = inet6_twsk((struct sock *)tw);
-               *(struct in6_addr *)addr.addr.a6 = tw6->tw_v6_daddr;
-               hash = ipv6_addr_hash(&tw6->tw_v6_daddr);
+               *(struct in6_addr *)addr.addr.a6 = tw->tw_v6_daddr;
+               hash = ipv6_addr_hash(&tw->tw_v6_daddr);
                break;
+#endif
        default:
                return NULL;
        }
@@ -288,10 +290,12 @@ 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 = inet6_sk(sk)->daddr;
-               hash = ipv6_addr_hash(&inet6_sk(sk)->daddr);
+               *(struct in6_addr *)addr.addr.a6 = sk->sk_v6_daddr;
+               hash = ipv6_addr_hash(&sk->sk_v6_daddr);
                break;
+#endif
        default:
                return NULL;
        }
@@ -659,16 +663,20 @@ void tcp_fastopen_cache_get(struct sock *sk, u16 *mss,
 void tcp_fastopen_cache_set(struct sock *sk, u16 mss,
                            struct tcp_fastopen_cookie *cookie, bool syn_lost)
 {
+       struct dst_entry *dst = __sk_dst_get(sk);
        struct tcp_metrics_block *tm;
 
+       if (!dst)
+               return;
        rcu_read_lock();
-       tm = tcp_get_metrics(sk, __sk_dst_get(sk), true);
+       tm = tcp_get_metrics(sk, dst, true);
        if (tm) {
                struct tcp_fastopen_metrics *tfom = &tm->tcpm_fastopen;
 
                write_seqlock_bh(&fastopen_seqlock);
-               tfom->mss = mss;
-               if (cookie->len > 0)
+               if (mss)
+                       tfom->mss = mss;
+               if (cookie && cookie->len > 0)
                        tfom->cookie = *cookie;
                if (syn_lost) {
                        ++tfom->syn_loss;
@@ -983,7 +991,7 @@ static int tcp_metrics_nl_cmd_del(struct sk_buff *skb, struct genl_info *info)
        return 0;
 }
 
-static struct genl_ops tcp_metrics_nl_ops[] = {
+static const struct genl_ops tcp_metrics_nl_ops[] = {
        {
                .cmd = TCP_METRICS_CMD_GET,
                .doit = tcp_metrics_nl_cmd_get,