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authorEric W. Biederman <ebiederm@xmission.com>2015-05-09 04:10:31 +0200
committerDavid S. Miller <davem@davemloft.net>2015-05-11 16:50:18 +0200
commit26abe14379f8e2fa3fd1bcf97c9a7ad9364886fe (patch)
treee2161c09531299ce4bfbeb1506c420b9f8db7fc2 /include
parentnet: Pass kern from net_proto_family.create to sk_alloc (diff)
downloadlinux-26abe14379f8e2fa3fd1bcf97c9a7ad9364886fe.tar.xz
linux-26abe14379f8e2fa3fd1bcf97c9a7ad9364886fe.zip
net: Modify sk_alloc to not reference count the netns of kernel sockets.
Now that sk_alloc knows when a kernel socket is being allocated modify it to not reference count the network namespace of kernel sockets. Keep track of if a socket needs reference counting by adding a flag to struct sock called sk_net_refcnt. Update all of the callers of sock_create_kern to stop using sk_change_net and sk_release_kernel as those hacks are no longer needed, to avoid reference counting a kernel socket. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/net/inet_common.h2
-rw-r--r--include/net/sock.h2
2 files changed, 3 insertions, 1 deletions
diff --git a/include/net/inet_common.h b/include/net/inet_common.h
index 4a92423eefa5..279f83591971 100644
--- a/include/net/inet_common.h
+++ b/include/net/inet_common.h
@@ -41,7 +41,7 @@ int inet_recv_error(struct sock *sk, struct msghdr *msg, int len,
static inline void inet_ctl_sock_destroy(struct sock *sk)
{
- sk_release_kernel(sk);
+ sock_release(sk->sk_socket);
}
#endif
diff --git a/include/net/sock.h b/include/net/sock.h
index d8dcf91732b0..9e6b2c0b4741 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -184,6 +184,7 @@ struct sock_common {
unsigned char skc_reuse:4;
unsigned char skc_reuseport:1;
unsigned char skc_ipv6only:1;
+ unsigned char skc_net_refcnt:1;
int skc_bound_dev_if;
union {
struct hlist_node skc_bind_node;
@@ -323,6 +324,7 @@ struct sock {
#define sk_reuse __sk_common.skc_reuse
#define sk_reuseport __sk_common.skc_reuseport
#define sk_ipv6only __sk_common.skc_ipv6only
+#define sk_net_refcnt __sk_common.skc_net_refcnt
#define sk_bound_dev_if __sk_common.skc_bound_dev_if
#define sk_bind_node __sk_common.skc_bind_node
#define sk_prot __sk_common.skc_prot