[PATCH 1/8] SUNRPC: Add address family field to svc_serv data structure

[Chuck Lever <chuck.lever@oracle.com>]

Introduce and initialize an address family field in the svc_serv structure.

This field will determine what family to use for the service's listener
sockets and what families are advertised via the local rpcbind daemon.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---

 fs/lockd/svc.c             |    2 +-
 fs/nfs/callback.c          |    3 ++-
 fs/nfsd/nfssvc.c           |    1 +
 include/linux/sunrpc/svc.h |    7 ++++---
 net/sunrpc/svc.c           |   11 ++++++-----
 5 files changed, 14 insertions(+), 10 deletions(-)


diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index 2169af4..51bccee 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -276,7 +276,7 @@ lockd_up(int proto) /* Maybe add a 'family' option when IPv6 is supported ?? */
 			"lockd_up: no pid, %d users??\n", nlmsvc_users);
 
 	error = -ENOMEM;
-	serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, NULL);
+	serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, AF_INET, NULL);
 	if (!serv) {
 		printk(KERN_WARNING "lockd_up: create service failed\n");
 		goto out;
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index f447f4b..6a09760 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -105,7 +105,8 @@ int nfs_callback_up(void)
 	mutex_lock(&nfs_callback_mutex);
 	if (nfs_callback_info.users++ || nfs_callback_info.task != NULL)
 		goto out;
-	serv = svc_create(&nfs4_callback_program, NFS4_CALLBACK_BUFSIZE, NULL);
+	serv = svc_create(&nfs4_callback_program, NFS4_CALLBACK_BUFSIZE,
+				AF_INET, NULL);
 	ret = -ENOMEM;
 	if (!serv)
 		goto out_err;
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 941041f..f38f47a 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -219,6 +219,7 @@ int nfsd_create_serv(void)
 	atomic_set(&nfsd_busy, 0);
 	nfsd_serv = svc_create_pooled(&nfsd_program,
 				      nfsd_max_blksize,
+				      AF_INET,
 				      nfsd_last_thread,
 				      nfsd, SIG_NOCLEAN, THIS_MODULE);
 	if (nfsd_serv == NULL)
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 4b54c5f..a27178b 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -66,6 +66,7 @@ struct svc_serv {
 	struct list_head	sv_tempsocks;	/* all temporary sockets */
 	int			sv_tmpcnt;	/* count of temporary sockets */
 	struct timer_list	sv_temptimer;	/* timer for aging temporary sockets */
+	sa_family_t		sv_family;	/* listener's address family */
 
 	char *			sv_name;	/* service name */
 
@@ -382,13 +383,13 @@ struct svc_procedure {
 /*
  * Function prototypes.
  */
-struct svc_serv *  svc_create(struct svc_program *, unsigned int,
-			      void (*shutdown)(struct svc_serv*));
+struct svc_serv *svc_create(struct svc_program *, unsigned int, sa_family_t,
+					void (*shutdown)(struct svc_serv *));
 struct svc_rqst *svc_prepare_thread(struct svc_serv *serv,
 					struct svc_pool *pool);
 void		   svc_exit_thread(struct svc_rqst *);
 struct svc_serv *  svc_create_pooled(struct svc_program *, unsigned int,
-			void (*shutdown)(struct svc_serv*),
+			sa_family_t, void (*shutdown)(struct svc_serv *),
 			svc_thread_fn, int sig, struct module *);
 int		   svc_set_num_threads(struct svc_serv *, struct svc_pool *, int);
 void		   svc_destroy(struct svc_serv *);
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 01c7e31..d0e7865 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -366,7 +366,7 @@ svc_pool_for_cpu(struct svc_serv *serv, int cpu)
  */
 static struct svc_serv *
 __svc_create(struct svc_program *prog, unsigned int bufsize, int npools,
-	   void (*shutdown)(struct svc_serv *serv))
+	   sa_family_t family, void (*shutdown)(struct svc_serv *serv))
 {
 	struct svc_serv	*serv;
 	unsigned int vers;
@@ -375,6 +375,7 @@ __svc_create(struct svc_program *prog, unsigned int bufsize, int npools,
 
 	if (!(serv = kzalloc(sizeof(*serv), GFP_KERNEL)))
 		return NULL;
+	serv->sv_family    = family;
 	serv->sv_name      = prog->pg_name;
 	serv->sv_program   = prog;
 	serv->sv_nrthreads = 1;
@@ -434,21 +435,21 @@ __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))
+		sa_family_t family, void (*shutdown)(struct svc_serv *serv))
 {
-	return __svc_create(prog, bufsize, /*npools*/1, shutdown);
+	return __svc_create(prog, bufsize, /*npools*/1, family, shutdown);
 }
 EXPORT_SYMBOL(svc_create);
 
 struct svc_serv *
 svc_create_pooled(struct svc_program *prog, unsigned int bufsize,
-		void (*shutdown)(struct svc_serv *serv),
+		  sa_family_t family, void (*shutdown)(struct svc_serv *serv),
 		  svc_thread_fn func, int sig, struct module *mod)
 {
 	struct svc_serv *serv;
 	unsigned int npools = svc_pool_map_get();
 
-	serv = __svc_create(prog, bufsize, npools, shutdown);
+	serv = __svc_create(prog, bufsize, npools, family, shutdown);
 
 	if (serv != NULL) {
 		serv->sv_function = func;