From: Kuniyuki Iwashima kuniyu@amazon.com
commit b5fc29233d28be7a3322848ebe73ac327559cdb9 upstream.
After commit d38afeec26ed ("tcp/udp: Call inet6_destroy_sock() in IPv6 sk->sk_destruct()."), we call inet6_destroy_sock() in sk->sk_destruct() by setting inet6_sock_destruct() to it to make sure we do not leak inet6-specific resources.
Now we can remove unnecessary inet6_destroy_sock() calls in sk->sk_prot->destroy().
DCCP and SCTP have their own sk->sk_destruct() function, so we change them separately in the following patches.
Signed-off-by: Kuniyuki Iwashima kuniyu@amazon.com Reviewed-by: Matthieu Baerts matthieu.baerts@tessares.net Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Ziyang Xuan william.xuanziyang@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/ipv6/ping.c | 6 ------ net/ipv6/raw.c | 2 -- net/ipv6/tcp_ipv6.c | 8 +------- net/ipv6/udp.c | 2 -- net/l2tp/l2tp_ip6.c | 2 -- net/mptcp/protocol.c | 7 ------- 6 files changed, 1 insertion(+), 26 deletions(-)
--- a/net/ipv6/ping.c +++ b/net/ipv6/ping.c @@ -22,11 +22,6 @@ #include <linux/proc_fs.h> #include <net/ping.h>
-static void ping_v6_destroy(struct sock *sk) -{ - inet6_destroy_sock(sk); -} - /* Compatibility glue so we can support IPv6 when it's compiled as a module */ static int dummy_ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len) @@ -171,7 +166,6 @@ struct proto pingv6_prot = { .owner = THIS_MODULE, .init = ping_init_sock, .close = ping_close, - .destroy = ping_v6_destroy, .connect = ip6_datagram_connect_v6_only, .disconnect = __udp_disconnect, .setsockopt = ipv6_setsockopt, --- a/net/ipv6/raw.c +++ b/net/ipv6/raw.c @@ -1211,8 +1211,6 @@ static void raw6_destroy(struct sock *sk lock_sock(sk); ip6_flush_pending_frames(sk); release_sock(sk); - - inet6_destroy_sock(sk); }
static int rawv6_init_sk(struct sock *sk) --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -1936,12 +1936,6 @@ static int tcp_v6_init_sock(struct sock return 0; }
-static void tcp_v6_destroy_sock(struct sock *sk) -{ - tcp_v4_destroy_sock(sk); - inet6_destroy_sock(sk); -} - #ifdef CONFIG_PROC_FS /* Proc filesystem TCPv6 sock list dumping. */ static void get_openreq6(struct seq_file *seq, @@ -2134,7 +2128,7 @@ struct proto tcpv6_prot = { .accept = inet_csk_accept, .ioctl = tcp_ioctl, .init = tcp_v6_init_sock, - .destroy = tcp_v6_destroy_sock, + .destroy = tcp_v4_destroy_sock, .shutdown = tcp_shutdown, .setsockopt = tcp_setsockopt, .getsockopt = tcp_getsockopt, --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -1630,8 +1630,6 @@ void udpv6_destroy_sock(struct sock *sk) udp_encap_disable(); } } - - inet6_destroy_sock(sk); }
/* --- a/net/l2tp/l2tp_ip6.c +++ b/net/l2tp/l2tp_ip6.c @@ -255,8 +255,6 @@ static void l2tp_ip6_destroy_sock(struct
if (tunnel) l2tp_tunnel_delete(tunnel); - - inet6_destroy_sock(sk); }
static int l2tp_ip6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -2863,12 +2863,6 @@ static const struct proto_ops mptcp_v6_s
static struct proto mptcp_v6_prot;
-static void mptcp_v6_destroy(struct sock *sk) -{ - mptcp_destroy(sk); - inet6_destroy_sock(sk); -} - static struct inet_protosw mptcp_v6_protosw = { .type = SOCK_STREAM, .protocol = IPPROTO_MPTCP, @@ -2884,7 +2878,6 @@ int __init mptcp_proto_v6_init(void) mptcp_v6_prot = mptcp_prot; strcpy(mptcp_v6_prot.name, "MPTCPv6"); mptcp_v6_prot.slab = NULL; - mptcp_v6_prot.destroy = mptcp_v6_destroy; mptcp_v6_prot.obj_size = sizeof(struct mptcp6_sock);
err = proto_register(&mptcp_v6_prot, 1);