Home » Mailing lists » Devel » [PATCH 0/7] SUNRPC: register services with per-net rpcbind
| [PATCH 0/7] SUNRPC: register services with per-net rpcbind [message #44579] |
Thu, 15 December 2011 16:01  |
Stanislav Kinsbursky
Messages: 683
Registered: October 2011
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Senior Member |
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This patch set makes service registered with per-net rpcbind and required for
making Lockd and NFSd services able to handle requests from and to different
network namespaces.
The following series consists of:
---
Stanislav Kinsbursky (7):
SUNRPC: create rpcbind client in passed network namespace context
SUNRPC: register rpcbind programs in passed network namespase context
SUNRPC: use proper network namespace in rpcbind RPCBPROC_GETADDR procedure
SUNRPC: parametrize local rpcbind clients creation with net ns
SUNRPC: pass network namespace to service registering routines
SUNRPC: register service on creation in current network namespace
SUNRPC: unregister service on creation in current network namespace
fs/nfsd/nfssvc.c | 4 +--
include/linux/sunrpc/clnt.h | 9 ++++--
include/linux/sunrpc/svc.h | 11 ++++----
net/sunrpc/rpcb_clnt.c | 29 +++++++++++---------
net/sunrpc/svc.c | 61 +++++++++++++++++++++++--------------------
net/sunrpc/svcsock.c | 3 +-
6 files changed, 63 insertions(+), 54 deletions(-)
--
Signature
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| [PATCH 5/7] SUNRPC: pass network namespace to service registering routines [message #44580 is a reply to message #44579] |
Thu, 15 December 2011 16:01  |
Stanislav Kinsbursky
Messages: 683
Registered: October 2011
|
Senior Member |
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Lockd and NFSd services will handle requests from and to many network
nsamespaces. And thus have to be registered and unregistered per network
namespace.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
---
include/linux/sunrpc/svc.h | 2 +-
net/sunrpc/svc.c | 42 +++++++++++++++++++++++-------------------
net/sunrpc/svcsock.c | 3 ++-
3 files changed, 26 insertions(+), 21 deletions(-)
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 35b37b1..d3563c2 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -428,7 +428,7 @@ void svc_destroy(struct svc_serv *);
int svc_process(struct svc_rqst *);
int bc_svc_process(struct svc_serv *, struct rpc_rqst *,
struct svc_rqst *);
-int svc_register(const struct svc_serv *, const int,
+int svc_register(const struct svc_serv *, struct net *, const int,
const unsigned short, const unsigned short);
void svc_wake_up(struct svc_serv *);
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 03e9f04..137475a 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -30,7 +30,7 @@
#define RPCDBG_FACILITY RPCDBG_SVCDSP
-static void svc_unregister(const struct svc_serv *serv);
+static void svc_unregister(const struct svc_serv *serv, struct net *net);
#define svc_serv_is_pooled(serv) ((serv)->sv_function)
@@ -375,13 +375,13 @@ static int svc_rpcb_setup(struct svc_serv *serv)
return err;
/* Remove any stale portmap registrations */
- svc_unregister(serv);
+ svc_unregister(serv, &init_net);
return 0;
}
void svc_rpcb_cleanup(struct svc_serv *serv)
{
- svc_unregister(serv);
+ svc_unregister(serv, &init_net);
rpcb_put_local(&init_net);
}
EXPORT_SYMBOL_GPL(svc_rpcb_cleanup);
@@ -790,7 +790,8 @@ EXPORT_SYMBOL_GPL(svc_exit_thread);
* Returns zero on success; a negative errno value is returned
* if any error occurs.
*/
-static int __svc_rpcb_register4(const u32 program, const u32 version,
+static int __svc_rpcb_register4(struct net *net, const u32 program,
+ const u32 version,
const unsigned short protocol,
const unsigned short port)
{
@@ -813,7 +814,7 @@ static int __svc_rpcb_register4(const u32 program, const u32 version,
return -ENOPROTOOPT;
}
- error = rpcb_v4_register(&init_net, program, version,
+ error = rpcb_v4_register(net, program, version,
(const struct sockaddr *)&sin, netid);
/*
@@ -821,7 +822,7 @@ static int __svc_rpcb_register4(const u32 program, const u32 version,
* registration request with the legacy rpcbind v2 protocol.
*/
if (error == -EPROTONOSUPPORT)
- error = rpcb_register(&init_net, program, version, protocol, port);
+ error = rpcb_register(net, program, version, protocol, port);
return error;
}
@@ -837,7 +838,8 @@ static int __svc_rpcb_register4(const u32 program, const u32 version,
* Returns zero on success; a negative errno value is returned
* if any error occurs.
*/
-static int __svc_rpcb_register6(const u32 program, const u32 version,
+static int __svc_rpcb_register6(struct net *net, const u32 program,
+ const u32 version,
const unsigned short protocol,
const unsigned short port)
{
@@ -860,7 +862,7 @@ static int __svc_rpcb_register6(const u32 program, const u32 version,
return -ENOPROTOOPT;
}
- error = rpcb_v4_register(&init_net, program, version,
+ error = rpcb_v4_register(net, program, version,
(const struct sockaddr *)&sin6, netid);
/*
@@ -880,7 +882,7 @@ static int __svc_rpcb_register6(const u32 program, const u32 version,
* Returns zero on success; a negative errno value is returned
* if any error occurs.
*/
-static int __svc_register(const char *progname,
+static int __svc_register(struct net *net, const char *progname,
const u32 program, const u32 version,
const int family,
const unsigned short protocol,
@@ -890,12 +892,12 @@ static int __svc_register(const char *progname,
switch (family) {
case PF_INET:
- error = __svc_rpcb_register4(program, version,
+ error = __svc_rpcb_register4(net, program, version,
protocol, port);
break;
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
case PF_INET6:
- error = __svc_rpcb_register6(program, version,
+ error = __svc_rpcb_register6(net, program, version,
protocol, port);
#endif /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
}
@@ -909,14 +911,16 @@ static int __svc_register(const char *progname,
/**
* svc_register - register an RPC service with the local portmapper
* @serv: svc_serv struct for the service to register
+ * @net: net namespace for the service to register
* @family: protocol family of service's listener socket
* @proto: transport protocol number to advertise
* @port: port to advertise
*
* Service is registered for any address in the passed-in protocol family
*/
-int svc_register(const struct svc_serv *serv, const int family,
- const unsigned short proto, const unsigned short port)
+int svc_register(const struct svc_serv *serv, struct net *net,
+ const int family, const unsigned short proto,
+ const unsigned short port)
{
struct svc_program *progp;
unsigned int i;
@@ -941,7 +945,7 @@ int svc_register(const struct svc_serv *serv, const int family,
if (progp->pg_vers[i]->vs_hidden)
continue;
- error = __svc_register(progp->pg_name, progp->pg_prog,
+ error = __svc_register(net, progp->pg_name, progp->pg_prog,
i, family, proto, port);
if (error < 0)
break;
@@ -958,19 +962,19 @@ int svc_register(const struct svc_serv *serv, const int family,
* any "inet6" entries anyway. So a PMAP_UNSET should be sufficient
* in this case to clear all existing entries for [program, version].
*/
-static void __svc_unregister(const u32 program, const u32 version,
+static void __svc_unregister(struct net *net, const u32 program, const u32 version,
const char *progname)
{
int error;
- error = rpcb_v4_register(&init_net, program, version, NULL, "");
+ error = rpcb_v4_register(net, program, version, NULL, "");
/*
* User space didn't support rpcbind v4, so retry this
* request with the legacy rpcbind v2 protocol.
*/
if (error == -EPROTONOSUPPORT)
- error = rpcb_register(&init_net, program, version, 0, 0);
+ error = rpcb_register(net, program, version, 0, 0);
dprintk("svc: %s(%sv%u), error %d\n",
__func__, progname, version, error);
@@ -984,7 +988,7 @@ static void __svc_unregister(const u32 program, const u32 version,
* The result of unregistration is reported via dprintk for those who want
* verification of the result, but is otherwise not important.
*/
-static void svc_unregister(const struct svc_serv *serv)
+static void svc_unregister(const struct svc_serv *serv, struct net *net)
{
struct svc_program *progp;
unsigned long flags;
@@ -1001,7 +1005,7 @@ static void svc_unregister(const struct svc_serv *serv)
dprintk("svc: attempting to unregister %sv%u\n",
progp->pg_name, i);
- __svc_unregister(progp->pg_prog, i, progp->pg_name);
+ __svc_unregister(net, progp->pg_prog, i, progp->pg_name);
}
}
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 277909e..110735f 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -1409,7 +1409,8 @@ static struct svc_sock *svc_setup_socket(struct svc_serv *serv,
/* Register socket with portmapper */
if (*errp >= 0 && pmap_register)
- *errp = svc_register(serv, inet->sk_family, inet->sk_protocol,
+ *errp = svc_register(serv, sock->sk->sk_net, inet->sk_family,
+ inet->sk_protocol,
ntohs(inet_sk(inet)->inet_sport));
if (*errp < 0) {
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| [PATCH 3/7] SUNRPC: use proper network namespace in rpcbind RPCBPROC_GETADDR procedure [message #44581 is a reply to message #44579] |
Thu, 15 December 2011 16:01 |
Stanislav Kinsbursky
Messages: 683
Registered: October 2011
|
Senior Member |
|
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Pass request socket network namespace to rpc_uaddr2sockaddr() instead of
hardcoded init_net, when decoding address in RPCBPROC_GETADDR procedure.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
---
net/sunrpc/rpcb_clnt.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index ea87b0c..d94f188 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -935,7 +935,8 @@ static int rpcb_dec_getaddr(struct rpc_rqst *req, struct xdr_stream *xdr,
dprintk("RPC: %5u RPCB_%s reply: %s\n", task->tk_pid,
task->tk_msg.rpc_proc->p_name, (char *)p);
- if (rpc_uaddr2sockaddr(&init_net, (char *)p, len, sap, sizeof(address)) == 0)
+ if (rpc_uaddr2sockaddr(req->rq_xprt->xprt_net, (char *)p, len,
+ sap, sizeof(address)) == 0)
goto out_fail;
rpcb->r_port = rpc_get_port(sap);
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| [PATCH 4/7] SUNRPC: parametrize local rpcbind clients creation with net ns [message #44582 is a reply to message #44579] |
Thu, 15 December 2011 16:01 |
Stanislav Kinsbursky
Messages: 683
Registered: October 2011
|
Senior Member |
|
|
These client are per network namespace and thus can be created for different
network namespaces.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
---
include/linux/sunrpc/clnt.h | 4 ++--
net/sunrpc/rpcb_clnt.c | 7 +++----
net/sunrpc/svc.c | 4 ++--
3 files changed, 7 insertions(+), 8 deletions(-)
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index 1e56469..5748807 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -136,8 +136,8 @@ void rpc_shutdown_client(struct rpc_clnt *);
void rpc_release_client(struct rpc_clnt *);
void rpc_task_release_client(struct rpc_task *);
-int rpcb_create_local(void);
-void rpcb_put_local(void);
+int rpcb_create_local(struct net *);
+void rpcb_put_local(struct net *);
int rpcb_register(struct net *, u32, u32, int, unsigned short);
int rpcb_v4_register(struct net *net, const u32 program,
const u32 version,
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index d94f188..4ce3a8e 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -175,9 +175,9 @@ static int rpcb_get_local(struct net *net)
return cnt;
}
-void rpcb_put_local(void)
+void rpcb_put_local(struct net *net)
{
- struct sunrpc_net *sn = net_generic(&init_net, sunrpc_net_id);
+ struct sunrpc_net *sn = net_generic(net, sunrpc_net_id);
struct rpc_clnt *clnt = sn->rpcb_local_clnt;
struct rpc_clnt *clnt4 = sn->rpcb_local_clnt4;
int shutdown;
@@ -323,11 +323,10 @@ out:
* Returns zero on success, otherwise a negative errno value
* is returned.
*/
-int rpcb_create_local(void)
+int rpcb_create_local(struct net *net)
{
static DEFINE_MUTEX(rpcb_create_local_mutex);
int result = 0;
- struct net *net = &init_net;
if (rpcb_get_local(net))
return result;
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index e9c42ad..03e9f04 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -370,7 +370,7 @@ static int svc_rpcb_setup(struct svc_serv *serv)
{
int err;
- err = rpcb_create_local();
+ err = rpcb_create_local(&init_net);
if (err)
return err;
@@ -382,7 +382,7 @@ static int svc_rpcb_setup(struct svc_serv *serv)
void svc_rpcb_cleanup(struct svc_serv *serv)
{
svc_unregister(serv);
- rpcb_put_local();
+ rpcb_put_local(&init_net);
}
EXPORT_SYMBOL_GPL(svc_rpcb_cleanup);
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| [PATCH 7/7] SUNRPC: unregister service on creation in current network namespace [message #44583 is a reply to message #44579] |
Thu, 15 December 2011 16:03 |
Stanislav Kinsbursky
Messages: 683
Registered: October 2011
|
Senior Member |
|
|
On service shutdown we can be sure, that no more users of it left except
current. Thus it looks like using current network namespace context is safe in
this case.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
---
fs/nfsd/nfssvc.c | 4 ++--
include/linux/sunrpc/svc.h | 9 +++++----
net/sunrpc/svc.c | 14 +++++++-------
3 files changed, 14 insertions(+), 13 deletions(-)
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index eda7d7e..fce472f 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -251,13 +251,13 @@ static void nfsd_shutdown(void)
nfsd_up = false;
}
-static void nfsd_last_thread(struct svc_serv *serv)
+static void nfsd_last_thread(struct svc_serv *serv, struct net *net)
{
/* When last nfsd thread exits we need to do some clean-up */
nfsd_serv = NULL;
nfsd_shutdown();
- svc_rpcb_cleanup(serv);
+ svc_rpcb_cleanup(serv, net);
printk(KERN_WARNING "nfsd: last server has exited, flushing export "
"cache\n");
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index d3563c2..7b65495 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -84,7 +84,8 @@ struct svc_serv {
unsigned int sv_nrpools; /* number of thread pools */
struct svc_pool * sv_pools; /* array of thread pools */
- void (*sv_shutdown)(struct svc_serv *serv);
+ void (*sv_shutdown)(struct svc_serv *serv,
+ struct net *net);
/* Callback to use when last thread
* exits.
*/
@@ -413,14 +414,14 @@ struct svc_procedure {
/*
* Function prototypes.
*/
-void svc_rpcb_cleanup(struct svc_serv *serv);
+void svc_rpcb_cleanup(struct svc_serv *serv, struct net *net);
struct svc_serv *svc_create(struct svc_program *, unsigned int,
- void (*shutdown)(struct svc_serv *));
+ void (*shutdown)(struct svc_serv *, struct net *net));
struct svc_rqst *svc_prepare_thread(struct svc_serv *serv,
struct svc_pool *pool, int node);
void svc_exit_thread(struct svc_rqst *);
struct svc_serv * svc_create_pooled(struct svc_program *, unsigned int,
- void (*shutdown)(struct svc_serv *),
+ void (*shutdown)(struct svc_serv *, struct net *net),
svc_thread_fn, struct module *);
int svc_set_num_threads(struct svc_serv *, struct svc_pool *, int);
int svc_pool_stats_open(struct svc_serv *serv, struct file *file);
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 578f962..b7e4ef9 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -380,10 +380,10 @@ static int svc_rpcb_setup(struct svc_serv *serv, struct net *net)
return 0;
}
-void svc_rpcb_cleanup(struct svc_serv *serv)
+void svc_rpcb_cleanup(struct svc_serv *serv, struct net *net)
{
- svc_unregister(serv, &init_net);
- rpcb_put_local(&init_net);
+ svc_unregister(serv, net);
+ rpcb_put_local(net);
}
EXPORT_SYMBOL_GPL(svc_rpcb_cleanup);
@@ -409,7 +409,7 @@ static int svc_uses_rpcbind(struct svc_serv *serv)
*/
static struct svc_serv *
__svc_create(struct svc_program *prog, unsigned int bufsize, int npools,
- void (*shutdown)(struct svc_serv *serv))
+ void (*shutdown)(struct svc_serv *serv, struct net *net))
{
struct svc_serv *serv;
unsigned int vers;
@@ -483,7 +483,7 @@ __svc_create(struct svc_program *prog, unsigned int bufsize, int npools,
struct svc_serv *
svc_create(struct svc_program *prog, unsigned int bufsize,
- void (*shutdown)(struct svc_serv *serv))
+ void (*shutdown)(struct svc_serv *serv, struct net *net))
{
return __svc_create(prog, bufsize, /*npools*/1, shutdown);
}
@@ -491,7 +491,7 @@ EXPORT_SYMBOL_GPL(svc_create);
struct svc_serv *
svc_create_pooled(struct svc_program *prog, unsigned int bufsize,
- void (*shutdown)(struct svc_serv *serv),
+ void (*shutdown)(struct svc_serv *serv, struct net *net),
svc_thread_fn func, struct module *mod)
{
struct svc_serv *serv;
@@ -532,7 +532,7 @@ svc_destroy(struct svc_serv *serv)
svc_close_all(&serv->sv_tempsocks);
if (serv->sv_shutdown)
- serv->sv_shutdown(serv);
+ serv->sv_shutdown(serv, current->nsproxy->net_ns);
svc_close_all(&serv->sv_permsocks);
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| [PATCH 6/7] SUNRPC: register service on creation in current network namespace [message #44584 is a reply to message #44579] |
Thu, 15 December 2011 16:03 |
Stanislav Kinsbursky
Messages: 683
Registered: October 2011
|
Senior Member |
|
|
Service, using rpcbind (Lockd, NFSd) are starting from userspace call and thus
we can use current network namespace.
There could be a problem with NFSd service, because it's creation can be called
through NFSd fs from different network namespace. But this is a part of "NFSd
per net ns" task and will be fixed in future.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
---
net/sunrpc/svc.c | 9 +++++----
1 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 137475a..578f962 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -20,6 +20,7 @@
#include <linux/module.h>
#include <linux/kthread.h>
#include <linux/slab.h>
+#include <linux/nsproxy.h>
#include <linux/sunrpc/types.h>
#include <linux/sunrpc/xdr.h>
@@ -366,16 +367,16 @@ svc_pool_for_cpu(struct svc_serv *serv, int cpu)
return &serv->sv_pools[pidx % serv->sv_nrpools];
}
-static int svc_rpcb_setup(struct svc_serv *serv)
+static int svc_rpcb_setup(struct svc_serv *serv, struct net *net)
{
int err;
- err = rpcb_create_local(&init_net);
+ err = rpcb_create_local(net);
if (err)
return err;
/* Remove any stale portmap registrations */
- svc_unregister(serv, &init_net);
+ svc_unregister(serv, net);
return 0;
}
@@ -468,7 +469,7 @@ __svc_create(struct svc_program *prog, unsigned int bufsize, int npools,
}
if (svc_uses_rpcbind(serv)) {
- if (svc_rpcb_setup(serv) < 0) {
+ if (svc_rpcb_setup(serv, current->nsproxy->net_ns) < 0) {
kfree(serv->sv_pools);
kfree(serv);
return NULL;
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