linux/net/sunrpc/netns.h

#ifndef __SUNRPC_NETNS_H__
#define __SUNRPC_NETNS_H__

#include <net/net_namespace.h>
#include <net/netns/generic.h>

struct cache_detail;

struct sunrpc_net {
	struct proc_dir_entry *proc_net_rpc;
	struct cache_detail *ip_map_cache;

	struct super_block *pipefs_sb;
	struct mutex pipefs_sb_lock;
};

extern int sunrpc_net_id;

int ip_map_cache_create(struct net *);
void ip_map_cache_destroy(struct net *);

#endif
sunrpc: The per-net skeleton Register empty per-net operations for the sunrpc layer. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: J. Bruce Fields <bfields@redhat.com> 2010-09-27 10:01:27 +00:00			`#ifndef __SUNRPC_NETNS_H__`
			`#define __SUNRPC_NETNS_H__`

			`#include <net/net_namespace.h>`
			`#include <net/netns/generic.h>`

sunrpc: Make the ip_map_cache be per-net Everything that is required for that already exists: * the per-net cache registration with respective proc entries * the context (struct net) is available in all the users Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: J. Bruce Fields <bfields@redhat.com> 2010-09-27 10:02:29 +00:00			`struct cache_detail;`

sunrpc: The per-net skeleton Register empty per-net operations for the sunrpc layer. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: J. Bruce Fields <bfields@redhat.com> 2010-09-27 10:01:27 +00:00			`struct sunrpc_net {`
sunrpc: Make the /proc/net/rpc appear in net namespaces Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: J. Bruce Fields <bfields@redhat.com> 2010-09-27 10:01:58 +00:00			`struct proc_dir_entry *proc_net_rpc;`
sunrpc: Make the ip_map_cache be per-net Everything that is required for that already exists: * the per-net cache registration with respective proc entries * the context (struct net) is available in all the users Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: J. Bruce Fields <bfields@redhat.com> 2010-09-27 10:02:29 +00:00			`struct cache_detail *ip_map_cache;`
SUNRPC: put pipefs superblock link on network namespace We have modules (like, pNFS blocklayout module) which creates pipes on rpc_pipefs. Thus we need per-net operations for them. To make it possible we require appropriate super block. So we have to put sb link on network namespace context. Note, that it's not strongly required to create pipes in per-net operations. IOW, if pipefs wasn't mounted yet, that no sb link reference will present on network namespace and in this case we need just need to pass through pipe creation. Pipe dentry will be created during pipefs mount notification. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> 2011-12-26 12:39:30 +00:00
			`struct super_block *pipefs_sb;`
SUNRPC: pipefs per-net operations helper introduced During per-net pipes creation and destruction we have to make sure, that pipefs sb exists for the whole creation/destruction cycle. This is done by using special mutex which controls pipefs sb reference on network namespace context. Helper consists of two parts: first of them (rpc_get_dentry_net) searches for dentry with specified name and returns with mutex taken on success. When pipe creation or destructions is completed, caller should release this mutex by rpc_put_dentry_net call. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> 2011-12-26 12:39:39 +00:00			`struct mutex pipefs_sb_lock;`
sunrpc: The per-net skeleton Register empty per-net operations for the sunrpc layer. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: J. Bruce Fields <bfields@redhat.com> 2010-09-27 10:01:27 +00:00			`};`

			`extern int sunrpc_net_id;`

sunrpc: Make the ip_map_cache be per-net Everything that is required for that already exists: * the per-net cache registration with respective proc entries * the context (struct net) is available in all the users Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: J. Bruce Fields <bfields@redhat.com> 2010-09-27 10:02:29 +00:00			`int ip_map_cache_create(struct net *);`
			`void ip_map_cache_destroy(struct net *);`

sunrpc: The per-net skeleton Register empty per-net operations for the sunrpc layer. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: J. Bruce Fields <bfields@redhat.com> 2010-09-27 10:01:27 +00:00			`#endif`