diff options
Diffstat (limited to 'net/core/sock.c')
| -rw-r--r-- | net/core/sock.c | 63 |
1 files changed, 32 insertions, 31 deletions
diff --git a/net/core/sock.c b/net/core/sock.c index c9cffb7acbea..666a17cab4f5 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -767,7 +767,7 @@ bool sk_mc_loop(struct sock *sk) return true; switch (sk->sk_family) { case AF_INET: - return inet_sk(sk)->mc_loop; + return inet_test_bit(MC_LOOP, sk); #if IS_ENABLED(CONFIG_IPV6) case AF_INET6: return inet6_sk(sk)->mc_loop; @@ -797,7 +797,7 @@ EXPORT_SYMBOL(sock_set_reuseport); void sock_no_linger(struct sock *sk) { lock_sock(sk); - sk->sk_lingertime = 0; + WRITE_ONCE(sk->sk_lingertime, 0); sock_set_flag(sk, SOCK_LINGER); release_sock(sk); } @@ -1230,15 +1230,15 @@ set_sndbuf: ret = -EFAULT; break; } - if (!ling.l_onoff) + if (!ling.l_onoff) { sock_reset_flag(sk, SOCK_LINGER); - else { -#if (BITS_PER_LONG == 32) - if ((unsigned int)ling.l_linger >= MAX_SCHEDULE_TIMEOUT/HZ) - sk->sk_lingertime = MAX_SCHEDULE_TIMEOUT; + } else { + unsigned long t_sec = ling.l_linger; + + if (t_sec >= MAX_SCHEDULE_TIMEOUT / HZ) + WRITE_ONCE(sk->sk_lingertime, MAX_SCHEDULE_TIMEOUT); else -#endif - sk->sk_lingertime = (unsigned int)ling.l_linger * HZ; + WRITE_ONCE(sk->sk_lingertime, t_sec * HZ); sock_set_flag(sk, SOCK_LINGER); } break; @@ -1247,17 +1247,11 @@ set_sndbuf: break; case SO_PASSCRED: - if (valbool) - set_bit(SOCK_PASSCRED, &sock->flags); - else - clear_bit(SOCK_PASSCRED, &sock->flags); + assign_bit(SOCK_PASSCRED, &sock->flags, valbool); break; case SO_PASSPIDFD: - if (valbool) - set_bit(SOCK_PASSPIDFD, &sock->flags); - else - clear_bit(SOCK_PASSPIDFD, &sock->flags); + assign_bit(SOCK_PASSPIDFD, &sock->flags, valbool); break; case SO_TIMESTAMP_OLD: @@ -1283,14 +1277,19 @@ set_sndbuf: break; case SO_RCVLOWAT: + { + int (*set_rcvlowat)(struct sock *sk, int val) = NULL; + if (val < 0) val = INT_MAX; - if (sock && sock->ops->set_rcvlowat) - ret = sock->ops->set_rcvlowat(sk, val); + if (sock) + set_rcvlowat = READ_ONCE(sock->ops)->set_rcvlowat; + if (set_rcvlowat) + ret = set_rcvlowat(sk, val); else WRITE_ONCE(sk->sk_rcvlowat, val ? : 1); break; - + } case SO_RCVTIMEO_OLD: case SO_RCVTIMEO_NEW: ret = sock_set_timeout(&sk->sk_rcvtimeo, optval, @@ -1361,10 +1360,7 @@ set_sndbuf: break; case SO_PASSSEC: - if (valbool) - set_bit(SOCK_PASSSEC, &sock->flags); - else - clear_bit(SOCK_PASSSEC, &sock->flags); + assign_bit(SOCK_PASSSEC, &sock->flags, valbool); break; case SO_MARK: if (!sockopt_ns_capable(sock_net(sk)->user_ns, CAP_NET_RAW) && @@ -1388,11 +1384,16 @@ set_sndbuf: break; case SO_PEEK_OFF: - if (sock->ops->set_peek_off) - ret = sock->ops->set_peek_off(sk, val); + { + int (*set_peek_off)(struct sock *sk, int val); + + set_peek_off = READ_ONCE(sock->ops)->set_peek_off; + if (set_peek_off) + ret = set_peek_off(sk, val); else ret = -EOPNOTSUPP; break; + } case SO_NOFCS: sock_valbool_flag(sk, SOCK_NOFCS, valbool); @@ -1691,7 +1692,7 @@ int sk_getsockopt(struct sock *sk, int level, int optname, case SO_LINGER: lv = sizeof(v.ling); v.ling.l_onoff = sock_flag(sk, SOCK_LINGER); - v.ling.l_linger = sk->sk_lingertime / HZ; + v.ling.l_linger = READ_ONCE(sk->sk_lingertime) / HZ; break; case SO_BSDCOMPAT: @@ -1823,14 +1824,14 @@ int sk_getsockopt(struct sock *sk, int level, int optname, case SO_PEERNAME: { - char address[128]; + struct sockaddr_storage address; - lv = sock->ops->getname(sock, (struct sockaddr *)address, 2); + lv = READ_ONCE(sock->ops)->getname(sock, (struct sockaddr *)&address, 2); if (lv < 0) return -ENOTCONN; if (lv < len) return -EINVAL; - if (copy_to_sockptr(optval, address, len)) + if (copy_to_sockptr(optval, &address, len)) return -EFAULT; goto lenout; } @@ -1867,7 +1868,7 @@ int sk_getsockopt(struct sock *sk, int level, int optname, break; case SO_PEEK_OFF: - if (!sock->ops->set_peek_off) + if (!READ_ONCE(sock->ops)->set_peek_off) return -EOPNOTSUPP; v.val = READ_ONCE(sk->sk_peek_off); |