net: initialize net->net_cookie at netns setup
It is simpler to make net->net_cookie a plain u64
written once in setup_net() instead of looping
and using atomic64 helpers.
Lorenz Bauer wants to add SO_NETNS_COOKIE socket option
and this patch would makes his patch series simpler.
Signed-off-by: Eric Dumazet <[email protected]>
Cc: Daniel Borkmann <[email protected]>
Cc: Lorenz Bauer <[email protected]>
Acked-by: Daniel Borkmann <[email protected]>
Tested-by: Lorenz Bauer <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index 2956787..dcaee24 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -165,7 +165,7 @@ struct net {
struct netns_xfrm xfrm;
#endif
- atomic64_t net_cookie; /* written once */
+ u64 net_cookie; /* written once */
#if IS_ENABLED(CONFIG_IP_VS)
struct netns_ipvs *ipvs;
@@ -224,8 +224,6 @@ extern struct list_head net_namespace_list;
struct net *get_net_ns_by_pid(pid_t pid);
struct net *get_net_ns_by_fd(int fd);
-u64 __net_gen_cookie(struct net *net);
-
#ifdef CONFIG_SYSCTL
void ipx_register_sysctl(void);
void ipx_unregister_sysctl(void);
