SUNRPC: introduce cache_detail->cache_request callback

This callback will allow to simplify upcalls in further patches in this
series.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

6 files changed, 20 insertions, 8 deletions

diff --git a/fs/nfs/dns_resolve.c b/fs/nfs/dns_resolve.c
index 9cbc98a4159d..55bc5d11457c 100644
--- a/fs/nfs/dns_resolve.c
+++ b/fs/nfs/dns_resolve.c
@@ -144,7 +144,7 @@ static int nfs_dns_upcall(struct cache_detail *cd,
 
         ret = nfs_cache_upcall(cd, key->hostname);
         if (ret)
-                ret = sunrpc_cache_pipe_upcall(cd, ch, nfs_dns_request);
+                ret = sunrpc_cache_pipe_upcall(cd, ch, cd->cache_request);
         return ret;
 }
 
@@ -359,6 +359,7 @@ static struct cache_detail nfs_dns_resolve_template = {
         .name           = "dns_resolve",
         .cache_put      = nfs_dns_ent_put,
         .cache_upcall   = nfs_dns_upcall,
+        .cache_request  = nfs_dns_request,
         .cache_parse    = nfs_dns_parse,
         .cache_show     = nfs_dns_show,
         .match          = nfs_dns_match,
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index 8e9df45b3d3c..0e16c7fa6800 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -69,7 +69,7 @@ static void expkey_request(struct cache_detail *cd,
 
 static int expkey_upcall(struct cache_detail *cd, struct cache_head *h)
 {
-        return sunrpc_cache_pipe_upcall(cd, h, expkey_request);
+        return sunrpc_cache_pipe_upcall(cd, h, cd->cache_request);
 }
 
 static struct svc_expkey *svc_expkey_update(struct cache_detail *cd, struct svc_expkey *new,
@@ -246,6 +246,7 @@ static struct cache_detail svc_expkey_cache_template = {
         .name           = "nfsd.fh",
         .cache_put      = expkey_put,
         .cache_upcall   = expkey_upcall,
+        .cache_request  = expkey_request,
         .cache_parse    = expkey_parse,
         .cache_show     = expkey_show,
         .match          = expkey_match,
@@ -340,7 +341,7 @@ static void svc_export_request(struct cache_detail *cd,
 
 static int svc_export_upcall(struct cache_detail *cd, struct cache_head *h)
 {
-        return sunrpc_cache_pipe_upcall(cd, h, svc_export_request);
+        return sunrpc_cache_pipe_upcall(cd, h, cd->cache_request);
 }
 
 static struct svc_export *svc_export_update(struct svc_export *new,
@@ -714,6 +715,7 @@ static struct cache_detail svc_export_cache_template = {
         .name           = "nfsd.export",
         .cache_put      = svc_export_put,
         .cache_upcall   = svc_export_upcall,
+        .cache_request  = svc_export_request,
         .cache_parse    = svc_export_parse,
         .cache_show     = svc_export_show,
         .match          = svc_export_match,
diff --git a/fs/nfsd/nfs4idmap.c b/fs/nfsd/nfs4idmap.c
index a1f10c0a6255..9033dfde1812 100644
--- a/fs/nfsd/nfs4idmap.c
+++ b/fs/nfsd/nfs4idmap.c
@@ -142,7 +142,7 @@ idtoname_request(struct cache_detail *cd, struct cache_head *ch, char **bpp,
 static int
 idtoname_upcall(struct cache_detail *cd, struct cache_head *ch)
 {
-        return sunrpc_cache_pipe_upcall(cd, ch, idtoname_request);
+        return sunrpc_cache_pipe_upcall(cd, ch, cd->cache_request);
 }
 
 static int
@@ -193,6 +193,7 @@ static struct cache_detail idtoname_cache_template = {
         .name           = "nfs4.idtoname",
         .cache_put      = ent_put,
         .cache_upcall   = idtoname_upcall,
+        .cache_request  = idtoname_request,
         .cache_parse    = idtoname_parse,
         .cache_show     = idtoname_show,
         .warn_no_listener = warn_no_idmapd,
@@ -323,7 +324,7 @@ nametoid_request(struct cache_detail *cd, struct cache_head *ch, char **bpp,
 static int
 nametoid_upcall(struct cache_detail *cd, struct cache_head *ch)
 {
-        return sunrpc_cache_pipe_upcall(cd, ch, nametoid_request);
+        return sunrpc_cache_pipe_upcall(cd, ch, cd->cache_request);
 }
 
 static int
@@ -366,6 +367,7 @@ static struct cache_detail nametoid_cache_template = {
         .name           = "nfs4.nametoid",
         .cache_put      = ent_put,
         .cache_upcall   = nametoid_upcall,
+        .cache_request  = nametoid_request,
         .cache_parse    = nametoid_parse,
         .cache_show     = nametoid_show,
         .warn_no_listener = warn_no_idmapd,
diff --git a/include/linux/sunrpc/cache.h b/include/linux/sunrpc/cache.h
index 5dc9ee4d616e..4f1c8582053c 100644
--- a/include/linux/sunrpc/cache.h
+++ b/include/linux/sunrpc/cache.h
@@ -83,6 +83,10 @@ struct cache_detail {
         int                     (*cache_upcall)(struct cache_detail *,
                                                 struct cache_head *);
 
+        void                    (*cache_request)(struct cache_detail *cd,
+                                                 struct cache_head *ch,
+                                                 char **bpp, int *blen);
+
         int                     (*cache_parse)(struct cache_detail *,
                                                char *buf, int len);
 
diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
index a5b41e2ac25a..1b0df530b59d 100644
--- a/net/sunrpc/auth_gss/svcauth_gss.c
+++ b/net/sunrpc/auth_gss/svcauth_gss.c
@@ -184,7 +184,7 @@ static void rsi_request(struct cache_detail *cd,
 
 static int rsi_upcall(struct cache_detail *cd, struct cache_head *h)
 {
-        return sunrpc_cache_pipe_upcall(cd, h, rsi_request);
+        return sunrpc_cache_pipe_upcall(cd, h, cd->cache_request);
 }
 
 
@@ -276,6 +276,7 @@ static struct cache_detail rsi_cache_template = {
         .name           = "auth.rpcsec.init",
         .cache_put      = rsi_put,
         .cache_upcall   = rsi_upcall,
+        .cache_request  = rsi_request,
         .cache_parse    = rsi_parse,
         .match          = rsi_match,
         .init           = rsi_init,
diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
index ce34c8e5b8eb..18b8742eaa50 100644
--- a/net/sunrpc/svcauth_unix.c
+++ b/net/sunrpc/svcauth_unix.c
@@ -159,7 +159,7 @@ static void ip_map_request(struct cache_detail *cd,
 
 static int ip_map_upcall(struct cache_detail *cd, struct cache_head *h)
 {
-        return sunrpc_cache_pipe_upcall(cd, h, ip_map_request);
+        return sunrpc_cache_pipe_upcall(cd, h, cd->cache_request);
 }
 
 static struct ip_map *__ip_map_lookup(struct cache_detail *cd, char *class, struct in6_addr *addr);
@@ -472,7 +472,7 @@ static void unix_gid_request(struct cache_detail *cd,
 
 static int unix_gid_upcall(struct cache_detail *cd, struct cache_head *h)
 {
-        return sunrpc_cache_pipe_upcall(cd, h, unix_gid_request);
+        return sunrpc_cache_pipe_upcall(cd, h, cd->cache_request);
 }
 
 static struct unix_gid *unix_gid_lookup(struct cache_detail *cd, uid_t uid);
@@ -578,6 +578,7 @@ static struct cache_detail unix_gid_cache_template = {
         .name           = "auth.unix.gid",
         .cache_put      = unix_gid_put,
         .cache_upcall   = unix_gid_upcall,
+        .cache_request  = unix_gid_request,
         .cache_parse    = unix_gid_parse,
         .cache_show     = unix_gid_show,
         .match          = unix_gid_match,
@@ -875,6 +876,7 @@ static struct cache_detail ip_map_cache_template = {
         .name           = "auth.unix.ip",
         .cache_put      = ip_map_put,
         .cache_upcall   = ip_map_upcall,
+        .cache_request  = ip_map_request,
         .cache_parse    = ip_map_parse,
         .cache_show     = ip_map_show,
         .match          = ip_map_match,