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Merge branch 'inet6_destroy_sock-calls-remove'

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Kuniyuki Iwashima says:

====================
inet6: Remove inet6_destroy_sock() calls.

This is a follow-up series for commit d38afeec26ed ("tcp/udp: Call
inet6_destroy_sock() in IPv6 sk->sk_destruct().").

This series cleans up unnecessary inet6_destory_sock() calls in
sk->sk_prot->destroy() and call it from sk->sk_destruct() to make
sure we do not leak memory related to IPv6 specific-resources.

Changes:
  v2:
    * patch 1
      * Fix build failure for CONFIG_MPTCP_IPV6=y

  v1: https://lore.kernel.org/netdev/20221018190956.1308-1-kuniyu@amazon.com/
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2022-10-24 09:40:39 +01:00
commit 04d63e62ef
13 changed files with 42 additions and 55 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/net/transp_v6.h
View File

@ -58,8 +58,6 @@ ip6_dgram_sock_seq_show(struct seq_file *seq, struct sock *sp, __u16 srcp,
#define LOOPBACK4_IPV6 cpu_to_be32(0x7f000006)
void inet6_destroy_sock(struct sock *sk);
#define IPV6_SEQ_DGRAM_HEADER \
" sl " \
"local_address " \

1
net/dccp/dccp.h
View File

@ -278,6 +278,7 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
int dccp_rcv_established(struct sock *sk, struct sk_buff *skb,
const struct dccp_hdr *dh, const unsigned int len);
void dccp_destruct_common(struct sock *sk);
int dccp_init_sock(struct sock *sk, const __u8 ctl_sock_initialized);
void dccp_destroy_sock(struct sock *sk);

15
net/dccp/ipv6.c
View File

@ -1021,6 +1021,12 @@ static const struct inet_connection_sock_af_ops dccp_ipv6_mapped = {
.sockaddr_len = sizeof(struct sockaddr_in6),
};
static void dccp_v6_sk_destruct(struct sock *sk)
{
dccp_destruct_common(sk);
inet6_sock_destruct(sk);
}
/* NOTE: A lot of things set to zero explicitly by call to
* sk_alloc() so need not be done here.
*/
@ -1033,17 +1039,12 @@ static int dccp_v6_init_sock(struct sock *sk)
if (unlikely(!dccp_v6_ctl_sock_initialized))
dccp_v6_ctl_sock_initialized = 1;
inet_csk(sk)->icsk_af_ops = &dccp_ipv6_af_ops;
sk->sk_destruct = dccp_v6_sk_destruct;
}
return err;
}
static void dccp_v6_destroy_sock(struct sock *sk)
{
dccp_destroy_sock(sk);
inet6_destroy_sock(sk);
}
static struct timewait_sock_ops dccp6_timewait_sock_ops = {
.twsk_obj_size = sizeof(struct dccp6_timewait_sock),
};
@ -1066,7 +1067,7 @@ static struct proto dccp_v6_prot = {
.accept = inet_csk_accept,
.get_port = inet_csk_get_port,
.shutdown = dccp_shutdown,
.destroy = dccp_v6_destroy_sock,
.destroy = dccp_destroy_sock,
.orphan_count = &dccp_orphan_count,
.max_header = MAX_DCCP_HEADER,
.obj_size = sizeof(struct dccp6_sock),

8
net/dccp/proto.c
View File

@ -171,12 +171,18 @@ const char *dccp_packet_name(const int type)
EXPORT_SYMBOL_GPL(dccp_packet_name);
static void dccp_sk_destruct(struct sock *sk)
void dccp_destruct_common(struct sock *sk)
{
struct dccp_sock *dp = dccp_sk(sk);
ccid_hc_tx_delete(dp->dccps_hc_tx_ccid, sk);
dp->dccps_hc_tx_ccid = NULL;
}
EXPORT_SYMBOL_GPL(dccp_destruct_common);
static void dccp_sk_destruct(struct sock *sk)
{
dccp_destruct_common(sk);
inet_sock_destruct(sk);
}

9
net/ipv6/af_inet6.c
View File

@ -114,6 +114,7 @@ void inet6_sock_destruct(struct sock *sk)
inet6_cleanup_sock(sk);
inet_sock_destruct(sk);
}
EXPORT_SYMBOL_GPL(inet6_sock_destruct);
static int inet6_create(struct net *net, struct socket *sock, int protocol,
int kern)
@ -489,7 +490,7 @@ int inet6_release(struct socket *sock)
}
EXPORT_SYMBOL(inet6_release);
void inet6_destroy_sock(struct sock *sk)
void inet6_cleanup_sock(struct sock *sk)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct sk_buff *skb;
@ -514,12 +515,6 @@ void inet6_destroy_sock(struct sock *sk)
txopt_put(opt);
}
}
EXPORT_SYMBOL_GPL(inet6_destroy_sock);
void inet6_cleanup_sock(struct sock *sk)
{
inet6_destroy_sock(sk);
}
EXPORT_SYMBOL_GPL(inet6_cleanup_sock);
/*

6
net/ipv6/ipv6_sockglue.c
View File

@ -1005,10 +1005,8 @@ unlock:
return retv;
e_inval:
sockopt_release_sock(sk);
if (needs_rtnl)
rtnl_unlock();
return -EINVAL;
retv = -EINVAL;
goto unlock;
}
int ipv6_setsockopt(struct sock *sk, int level, int optname, sockptr_t optval,

6
net/ipv6/ping.c
View File

@ -23,11 +23,6 @@
#include <linux/bpf-cgroup.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)
@ -205,7 +200,6 @@ struct proto pingv6_prot = {
.owner = THIS_MODULE,
.init = ping_init_sock,
.close = ping_close,
.destroy = ping_v6_destroy,
.pre_connect = ping_v6_pre_connect,
.connect = ip6_datagram_connect_v6_only,
.disconnect = __udp_disconnect,

2
net/ipv6/raw.c
View File

@ -1173,8 +1173,6 @@ 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)

8
net/ipv6/tcp_ipv6.c
View File

@ -1966,12 +1966,6 @@ static int tcp_v6_init_sock(struct sock *sk)
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,
@ -2164,7 +2158,7 @@ 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,

2
net/ipv6/udp.c
View File

@ -1661,8 +1661,6 @@ void udpv6_destroy_sock(struct sock *sk)
udp_encap_disable();
}
}
inet6_destroy_sock(sk);
}
/*

2
net/l2tp/l2tp_ip6.c
View File

@ -257,8 +257,6 @@ static void l2tp_ip6_destroy_sock(struct sock *sk)
if (tunnel)
l2tp_tunnel_delete(tunnel);
inet6_destroy_sock(sk);
}
static int l2tp_ip6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)

7
net/mptcp/protocol.c
View File

@ -3898,12 +3898,6 @@ static const struct proto_ops mptcp_v6_stream_ops = {
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,
@ -3919,7 +3913,6 @@ 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);

29
net/sctp/socket.c
View File

@ -5098,13 +5098,17 @@ static void sctp_destroy_sock(struct sock *sk)
}
/* Triggered when there are no references on the socket anymore */
static void sctp_destruct_sock(struct sock *sk)
static void sctp_destruct_common(struct sock *sk)
{
struct sctp_sock *sp = sctp_sk(sk);
/* Free up the HMAC transform. */
crypto_free_shash(sp->hmac);
}
static void sctp_destruct_sock(struct sock *sk)
{
sctp_destruct_common(sk);
inet_sock_destruct(sk);
}
@ -9427,7 +9431,7 @@ void sctp_copy_sock(struct sock *newsk, struct sock *sk,
sctp_sk(newsk)->reuse = sp->reuse;
newsk->sk_shutdown = sk->sk_shutdown;
newsk->sk_destruct = sctp_destruct_sock;
newsk->sk_destruct = sk->sk_destruct;
newsk->sk_family = sk->sk_family;
newsk->sk_protocol = IPPROTO_SCTP;
newsk->sk_backlog_rcv = sk->sk_prot->backlog_rcv;
@ -9662,11 +9666,20 @@ struct proto sctp_prot = {
#if IS_ENABLED(CONFIG_IPV6)
#include <net/transp_v6.h>
static void sctp_v6_destroy_sock(struct sock *sk)
static void sctp_v6_destruct_sock(struct sock *sk)
{
sctp_destroy_sock(sk);
inet6_destroy_sock(sk);
sctp_destruct_common(sk);
inet6_sock_destruct(sk);
}
static int sctp_v6_init_sock(struct sock *sk)
{
int ret = sctp_init_sock(sk);
if (!ret)
sk->sk_destruct = sctp_v6_destruct_sock;
return ret;
}
struct proto sctpv6_prot = {
@ -9676,8 +9689,8 @@ struct proto sctpv6_prot = {
.disconnect = sctp_disconnect,
.accept = sctp_accept,
.ioctl = sctp_ioctl,
.init = sctp_init_sock,
.destroy = sctp_v6_destroy_sock,
.init = sctp_v6_init_sock,
.destroy = sctp_destroy_sock,
.shutdown = sctp_shutdown,
.setsockopt = sctp_setsockopt,
.getsockopt = sctp_getsockopt,