nfsd: make NFSd service boot time per-net

This is simple: an NFSd service can be started at different times in
different network environments. So, its "boot time" has to be assigned
per net.

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

5 files changed, 23 insertions, 16 deletions

diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h
index 543ac486fd5..3b283eaab10 100644
--- a/fs/nfsd/netns.h
+++ b/fs/nfsd/netns.h
@@ -94,6 +94,11 @@ struct nfsd_net {
         time_t nfsd4_grace;
 
         bool nfsd_net_up;
+
+        /*
+         * Time of server startup
+         */
+        struct timeval nfssvc_boot;
 };
 
 /* Simple check to find out if a given net was properly initialized */
diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c
index 43f46cd9ede..2b8618de6c2 100644
--- a/fs/nfsd/nfs3xdr.c
+++ b/fs/nfsd/nfs3xdr.c
@@ -7,8 +7,10 @@
  */
 
 #include <linux/namei.h>
+#include <linux/sunrpc/svc_xprt.h>
 #include "xdr3.h"
 #include "auth.h"
+#include "netns.h"
 
 #define NFSDDBG_FACILITY                NFSDDBG_XDR
 
@@ -720,12 +722,14 @@ int
 nfs3svc_encode_writeres(struct svc_rqst *rqstp, __be32 *p,
                                         struct nfsd3_writeres *resp)
 {
+        struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
+
         p = encode_wcc_data(rqstp, p, &resp->fh);
         if (resp->status == 0) {
                 *p++ = htonl(resp->count);
                 *p++ = htonl(resp->committed);
-                *p++ = htonl(nfssvc_boot.tv_sec);
-                *p++ = htonl(nfssvc_boot.tv_usec);
+                *p++ = htonl(nn->nfssvc_boot.tv_sec);
+                *p++ = htonl(nn->nfssvc_boot.tv_usec);
         }
         return xdr_ressize_check(rqstp, p);
 }
@@ -1082,11 +1086,13 @@ int
 nfs3svc_encode_commitres(struct svc_rqst *rqstp, __be32 *p,
                                         struct nfsd3_commitres *resp)
 {
+        struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
+
         p = encode_wcc_data(rqstp, p, &resp->fh);
         /* Write verifier */
         if (resp->status == 0) {
-                *p++ = htonl(nfssvc_boot.tv_sec);
-                *p++ = htonl(nfssvc_boot.tv_usec);
+                *p++ = htonl(nn->nfssvc_boot.tv_sec);
+                *p++ = htonl(nn->nfssvc_boot.tv_usec);
         }
         return xdr_ressize_check(rqstp, p);
 }
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 1a0b1fdb5ad..bd67f4d6dfc 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -497,12 +497,13 @@ nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
                            &access->ac_supported);
 }
 
-static void gen_boot_verifier(nfs4_verifier *verifier)
+static void gen_boot_verifier(nfs4_verifier *verifier, struct net *net)
 {
         __be32 verf[2];
+        struct nfsd_net *nn = net_generic(net, nfsd_net_id);
 
-        verf[0] = (__be32)nfssvc_boot.tv_sec;
-        verf[1] = (__be32)nfssvc_boot.tv_usec;
+        verf[0] = (__be32)nn->nfssvc_boot.tv_sec;
+        verf[1] = (__be32)nn->nfssvc_boot.tv_usec;
         memcpy(verifier->data, verf, sizeof(verifier->data));
 }
 
@@ -510,7 +511,7 @@ static __be32
 nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
              struct nfsd4_commit *commit)
 {
-        gen_boot_verifier(&commit->co_verf);
+        gen_boot_verifier(&commit->co_verf, SVC_NET(rqstp));
         return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
                              commit->co_count);
 }
@@ -930,7 +931,7 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 
         cnt = write->wr_buflen;
         write->wr_how_written = write->wr_stable_how;
-        gen_boot_verifier(&write->wr_verifier);
+        gen_boot_verifier(&write->wr_verifier, SVC_NET(rqstp));
 
         nvecs = fill_in_write_vector(rqstp->rq_vec, write);
         WARN_ON_ONCE(nvecs > ARRAY_SIZE(rqstp->rq_vec));
diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
index 18f99966554..71ba60d3623 100644
--- a/fs/nfsd/nfsd.h
+++ b/fs/nfsd/nfsd.h
@@ -269,11 +269,6 @@ void		nfsd_lockd_shutdown(void);
 /* Check for dir entries '.' and '..' */
 #define isdotent(n, l)  (l < 3 && n[0] == '.' && (l == 1 || n[1] == '.'))
 
-/*
- * Time of server startup
- */
-extern struct timeval   nfssvc_boot;
-
 #ifdef CONFIG_NFSD_V4
 
 /* before processing a COMPOUND operation, we have to check that there
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 6e17efdd8af..40992cd5bff 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -27,7 +27,6 @@
 
 extern struct svc_program       nfsd_program;
 static int                      nfsd(void *vrqstp);
-struct timeval                  nfssvc_boot;
 
 /*
  * nfsd_mutex protects nfsd_serv -- both the pointer itself and the members
@@ -367,6 +366,7 @@ static int nfsd_get_default_max_blksize(void)
 int nfsd_create_serv(struct net *net)
 {
         int error;
+        struct nfsd_net *nn = net_generic(net, nfsd_net_id);
 
         WARN_ON(!mutex_is_locked(&nfsd_mutex));
         if (nfsd_serv) {
@@ -388,7 +388,7 @@ int nfsd_create_serv(struct net *net)
         }
 
         set_max_drc();
-        do_gettimeofday(&nfssvc_boot);          /* record boot time */
+        do_gettimeofday(&nn->nfssvc_boot);              /* record boot time */
         return 0;
 }