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authorLinus Torvalds <torvalds@linux-foundation.org>2010-10-26 12:55:25 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-26 12:55:25 -0400
commit4390110fef9e5c64e10c6ca19d586932242c9a8a (patch)
treef2f26fe291c8b4e424b97ac57370b33e0c006568 /fs/nfsd
parenta4dd8dce14014665862ce7911b38cb2c69e366dd (diff)
parent42d7ba3d6d56a6cbc773284896108b1e2ebcee81 (diff)
Merge branch 'for-2.6.37' of git://linux-nfs.org/~bfields/linux
* 'for-2.6.37' of git://linux-nfs.org/~bfields/linux: (99 commits) svcrpc: svc_tcp_sendto XPT_DEAD check is redundant svcrpc: no need for XPT_DEAD check in svc_xprt_enqueue svcrpc: assume svc_delete_xprt() called only once svcrpc: never clear XPT_BUSY on dead xprt nfsd4: fix connection allocation in sequence() nfsd4: only require krb5 principal for NFSv4.0 callbacks nfsd4: move minorversion to client nfsd4: delay session removal till free_client nfsd4: separate callback change and callback probe nfsd4: callback program number is per-session nfsd4: track backchannel connections nfsd4: confirm only on succesful create_session nfsd4: make backchannel sequence number per-session nfsd4: use client pointer to backchannel session nfsd4: move callback setup into session init code nfsd4: don't cache seq_misordered replies SUNRPC: Properly initialize sock_xprt.srcaddr in all cases SUNRPC: Use conventional switch statement when reclassifying sockets sunrpc/xprtrdma: clean up workqueue usage sunrpc: Turn list_for_each-s into the ..._entry-s ... Fix up trivial conflicts (two different deprecation notices added in separate branches) in Documentation/feature-removal-schedule.txt
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/Kconfig12
-rw-r--r--fs/nfsd/export.c73
-rw-r--r--fs/nfsd/nfs4callback.c244
-rw-r--r--fs/nfsd/nfs4idmap.c105
-rw-r--r--fs/nfsd/nfs4proc.c7
-rw-r--r--fs/nfsd/nfs4state.c493
-rw-r--r--fs/nfsd/nfs4xdr.c18
-rw-r--r--fs/nfsd/nfsctl.c26
-rw-r--r--fs/nfsd/nfsd.h2
-rw-r--r--fs/nfsd/nfssvc.c5
-rw-r--r--fs/nfsd/state.h52
11 files changed, 601 insertions, 436 deletions
diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig
index 7cf4ddafb4ab..31a78fce4732 100644
--- a/fs/nfsd/Kconfig
+++ b/fs/nfsd/Kconfig
@@ -29,6 +29,18 @@ config NFSD
29 29
30 If unsure, say N. 30 If unsure, say N.
31 31
32config NFSD_DEPRECATED
33 bool "Include support for deprecated syscall interface to NFSD"
34 depends on NFSD
35 default y
36 help
37 The syscall interface to nfsd was obsoleted in 2.6.0 by a new
38 filesystem based interface. The old interface is due for removal
39 in 2.6.40. If you wish to remove the interface before then
40 say N.
41
42 In unsure, say Y.
43
32config NFSD_V2_ACL 44config NFSD_V2_ACL
33 bool 45 bool
34 depends on NFSD 46 depends on NFSD
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index c2a4f71d87dd..c0fcb7ab7f6d 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -28,9 +28,6 @@
28typedef struct auth_domain svc_client; 28typedef struct auth_domain svc_client;
29typedef struct svc_export svc_export; 29typedef struct svc_export svc_export;
30 30
31static void exp_do_unexport(svc_export *unexp);
32static int exp_verify_string(char *cp, int max);
33
34/* 31/*
35 * We have two caches. 32 * We have two caches.
36 * One maps client+vfsmnt+dentry to export options - the export map 33 * One maps client+vfsmnt+dentry to export options - the export map
@@ -802,6 +799,7 @@ exp_find_key(svc_client *clp, int fsid_type, u32 *fsidv, struct cache_req *reqp)
802 return ek; 799 return ek;
803} 800}
804 801
802#ifdef CONFIG_NFSD_DEPRECATED
805static int exp_set_key(svc_client *clp, int fsid_type, u32 *fsidv, 803static int exp_set_key(svc_client *clp, int fsid_type, u32 *fsidv,
806 struct svc_export *exp) 804 struct svc_export *exp)
807{ 805{
@@ -852,6 +850,7 @@ exp_get_fsid_key(svc_client *clp, int fsid)
852 850
853 return exp_find_key(clp, FSID_NUM, fsidv, NULL); 851 return exp_find_key(clp, FSID_NUM, fsidv, NULL);
854} 852}
853#endif
855 854
856static svc_export *exp_get_by_name(svc_client *clp, const struct path *path, 855static svc_export *exp_get_by_name(svc_client *clp, const struct path *path,
857 struct cache_req *reqp) 856 struct cache_req *reqp)
@@ -893,6 +892,7 @@ static struct svc_export *exp_parent(svc_client *clp, struct path *path)
893 return exp; 892 return exp;
894} 893}
895 894
895#ifdef CONFIG_NFSD_DEPRECATED
896/* 896/*
897 * Hashtable locking. Write locks are placed only by user processes 897 * Hashtable locking. Write locks are placed only by user processes
898 * wanting to modify export information. 898 * wanting to modify export information.
@@ -925,6 +925,19 @@ exp_writeunlock(void)
925{ 925{
926 up_write(&hash_sem); 926 up_write(&hash_sem);
927} 927}
928#else
929
930/* hash_sem not needed once deprecated interface is removed */
931void exp_readlock(void) {}
932static inline void exp_writelock(void){}
933void exp_readunlock(void) {}
934static inline void exp_writeunlock(void){}
935
936#endif
937
938#ifdef CONFIG_NFSD_DEPRECATED
939static void exp_do_unexport(svc_export *unexp);
940static int exp_verify_string(char *cp, int max);
928 941
929static void exp_fsid_unhash(struct svc_export *exp) 942static void exp_fsid_unhash(struct svc_export *exp)
930{ 943{
@@ -935,10 +948,9 @@ static void exp_fsid_unhash(struct svc_export *exp)
935 948
936 ek = exp_get_fsid_key(exp->ex_client, exp->ex_fsid); 949 ek = exp_get_fsid_key(exp->ex_client, exp->ex_fsid);
937 if (!IS_ERR(ek)) { 950 if (!IS_ERR(ek)) {
938 ek->h.expiry_time = get_seconds()-1; 951 sunrpc_invalidate(&ek->h, &svc_expkey_cache);
939 cache_put(&ek->h, &svc_expkey_cache); 952 cache_put(&ek->h, &svc_expkey_cache);
940 } 953 }
941 svc_expkey_cache.nextcheck = get_seconds();
942} 954}
943 955
944static int exp_fsid_hash(svc_client *clp, struct svc_export *exp) 956static int exp_fsid_hash(svc_client *clp, struct svc_export *exp)
@@ -973,10 +985,9 @@ static void exp_unhash(struct svc_export *exp)
973 985
974 ek = exp_get_key(exp->ex_client, inode->i_sb->s_dev, inode->i_ino); 986 ek = exp_get_key(exp->ex_client, inode->i_sb->s_dev, inode->i_ino);
975 if (!IS_ERR(ek)) { 987 if (!IS_ERR(ek)) {
976 ek->h.expiry_time = get_seconds()-1; 988 sunrpc_invalidate(&ek->h, &svc_expkey_cache);
977 cache_put(&ek->h, &svc_expkey_cache); 989 cache_put(&ek->h, &svc_expkey_cache);
978 } 990 }
979 svc_expkey_cache.nextcheck = get_seconds();
980} 991}
981 992
982/* 993/*
@@ -1097,8 +1108,7 @@ out:
1097static void 1108static void
1098exp_do_unexport(svc_export *unexp) 1109exp_do_unexport(svc_export *unexp)
1099{ 1110{
1100 unexp->h.expiry_time = get_seconds()-1; 1111 sunrpc_invalidate(&unexp->h, &svc_export_cache);
1101 svc_export_cache.nextcheck = get_seconds();
1102 exp_unhash(unexp); 1112 exp_unhash(unexp);
1103 exp_fsid_unhash(unexp); 1113 exp_fsid_unhash(unexp);
1104} 1114}
@@ -1150,6 +1160,7 @@ out_unlock:
1150 exp_writeunlock(); 1160 exp_writeunlock();
1151 return err; 1161 return err;
1152} 1162}
1163#endif /* CONFIG_NFSD_DEPRECATED */
1153 1164
1154/* 1165/*
1155 * Obtain the root fh on behalf of a client. 1166 * Obtain the root fh on behalf of a client.
@@ -1459,25 +1470,43 @@ static void show_secinfo_flags(struct seq_file *m, int flags)
1459 show_expflags(m, flags, NFSEXP_SECINFO_FLAGS); 1470 show_expflags(m, flags, NFSEXP_SECINFO_FLAGS);
1460} 1471}
1461 1472
1473static bool secinfo_flags_equal(int f, int g)
1474{
1475 f &= NFSEXP_SECINFO_FLAGS;
1476 g &= NFSEXP_SECINFO_FLAGS;
1477 return f == g;
1478}
1479
1480static int show_secinfo_run(struct seq_file *m, struct exp_flavor_info **fp, struct exp_flavor_info *end)
1481{
1482 int flags;
1483
1484 flags = (*fp)->flags;
1485 seq_printf(m, ",sec=%d", (*fp)->pseudoflavor);
1486 (*fp)++;
1487 while (*fp != end && secinfo_flags_equal(flags, (*fp)->flags)) {
1488 seq_printf(m, ":%d", (*fp)->pseudoflavor);
1489 (*fp)++;
1490 }
1491 return flags;
1492}
1493
1462static void show_secinfo(struct seq_file *m, struct svc_export *exp) 1494static void show_secinfo(struct seq_file *m, struct svc_export *exp)
1463{ 1495{
1464 struct exp_flavor_info *f; 1496 struct exp_flavor_info *f;
1465 struct exp_flavor_info *end = exp->ex_flavors + exp->ex_nflavors; 1497 struct exp_flavor_info *end = exp->ex_flavors + exp->ex_nflavors;
1466 int lastflags = 0, first = 0; 1498 int flags;
1467 1499
1468 if (exp->ex_nflavors == 0) 1500 if (exp->ex_nflavors == 0)
1469 return; 1501 return;
1470 for (f = exp->ex_flavors; f < end; f++) { 1502 f = exp->ex_flavors;
1471 if (first || f->flags != lastflags) { 1503 flags = show_secinfo_run(m, &f, end);
1472 if (!first) 1504 if (!secinfo_flags_equal(flags, exp->ex_flags))
1473 show_secinfo_flags(m, lastflags); 1505 show_secinfo_flags(m, flags);
1474 seq_printf(m, ",sec=%d", f->pseudoflavor); 1506 while (f != end) {
1475 lastflags = f->flags; 1507 flags = show_secinfo_run(m, &f, end);
1476 } else { 1508 show_secinfo_flags(m, flags);
1477 seq_printf(m, ":%d", f->pseudoflavor);
1478 }
1479 } 1509 }
1480 show_secinfo_flags(m, lastflags);
1481} 1510}
1482 1511
1483static void exp_flags(struct seq_file *m, int flag, int fsid, 1512static void exp_flags(struct seq_file *m, int flag, int fsid,
@@ -1532,6 +1561,7 @@ const struct seq_operations nfs_exports_op = {
1532 .show = e_show, 1561 .show = e_show,
1533}; 1562};
1534 1563
1564#ifdef CONFIG_NFSD_DEPRECATED
1535/* 1565/*
1536 * Add or modify a client. 1566 * Add or modify a client.
1537 * Change requests may involve the list of host addresses. The list of 1567 * Change requests may involve the list of host addresses. The list of
@@ -1563,7 +1593,7 @@ exp_addclient(struct nfsctl_client *ncp)
1563 /* Insert client into hashtable. */ 1593 /* Insert client into hashtable. */
1564 for (i = 0; i < ncp->cl_naddr; i++) { 1594 for (i = 0; i < ncp->cl_naddr; i++) {
1565 ipv6_addr_set_v4mapped(ncp->cl_addrlist[i].s_addr, &addr6); 1595 ipv6_addr_set_v4mapped(ncp->cl_addrlist[i].s_addr, &addr6);
1566 auth_unix_add_addr(&addr6, dom); 1596 auth_unix_add_addr(&init_net, &addr6, dom);
1567 } 1597 }
1568 auth_unix_forget_old(dom); 1598 auth_unix_forget_old(dom);
1569 auth_domain_put(dom); 1599 auth_domain_put(dom);
@@ -1621,6 +1651,7 @@ exp_verify_string(char *cp, int max)
1621 printk(KERN_NOTICE "nfsd: couldn't validate string %s\n", cp); 1651 printk(KERN_NOTICE "nfsd: couldn't validate string %s\n", cp);
1622 return 0; 1652 return 0;
1623} 1653}
1654#endif /* CONFIG_NFSD_DEPRECATED */
1624 1655
1625/* 1656/*
1626 * Initialize the exports module. 1657 * Initialize the exports module.
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 014482c4e57d..143da2eecd7b 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -247,10 +247,11 @@ encode_cb_recall(struct xdr_stream *xdr, struct nfs4_delegation *dp,
247} 247}
248 248
249static void 249static void
250encode_cb_sequence(struct xdr_stream *xdr, struct nfsd4_cb_sequence *args, 250encode_cb_sequence(struct xdr_stream *xdr, struct nfsd4_callback *cb,
251 struct nfs4_cb_compound_hdr *hdr) 251 struct nfs4_cb_compound_hdr *hdr)
252{ 252{
253 __be32 *p; 253 __be32 *p;
254 struct nfsd4_session *ses = cb->cb_clp->cl_cb_session;
254 255
255 if (hdr->minorversion == 0) 256 if (hdr->minorversion == 0)
256 return; 257 return;
@@ -258,8 +259,8 @@ encode_cb_sequence(struct xdr_stream *xdr, struct nfsd4_cb_sequence *args,
258 RESERVE_SPACE(1 + NFS4_MAX_SESSIONID_LEN + 20); 259 RESERVE_SPACE(1 + NFS4_MAX_SESSIONID_LEN + 20);
259 260
260 WRITE32(OP_CB_SEQUENCE); 261 WRITE32(OP_CB_SEQUENCE);
261 WRITEMEM(args->cbs_clp->cl_sessionid.data, NFS4_MAX_SESSIONID_LEN); 262 WRITEMEM(ses->se_sessionid.data, NFS4_MAX_SESSIONID_LEN);
262 WRITE32(args->cbs_clp->cl_cb_seq_nr); 263 WRITE32(ses->se_cb_seq_nr);
263 WRITE32(0); /* slotid, always 0 */ 264 WRITE32(0); /* slotid, always 0 */
264 WRITE32(0); /* highest slotid always 0 */ 265 WRITE32(0); /* highest slotid always 0 */
265 WRITE32(0); /* cachethis always 0 */ 266 WRITE32(0); /* cachethis always 0 */
@@ -279,18 +280,18 @@ nfs4_xdr_enc_cb_null(struct rpc_rqst *req, __be32 *p)
279 280
280static int 281static int
281nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, __be32 *p, 282nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, __be32 *p,
282 struct nfs4_rpc_args *rpc_args) 283 struct nfsd4_callback *cb)
283{ 284{
284 struct xdr_stream xdr; 285 struct xdr_stream xdr;
285 struct nfs4_delegation *args = rpc_args->args_op; 286 struct nfs4_delegation *args = cb->cb_op;
286 struct nfs4_cb_compound_hdr hdr = { 287 struct nfs4_cb_compound_hdr hdr = {
287 .ident = args->dl_ident, 288 .ident = cb->cb_clp->cl_cb_ident,
288 .minorversion = rpc_args->args_seq.cbs_minorversion, 289 .minorversion = cb->cb_minorversion,
289 }; 290 };
290 291
291 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 292 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
292 encode_cb_compound_hdr(&xdr, &hdr); 293 encode_cb_compound_hdr(&xdr, &hdr);
293 encode_cb_sequence(&xdr, &rpc_args->args_seq, &hdr); 294 encode_cb_sequence(&xdr, cb, &hdr);
294 encode_cb_recall(&xdr, args, &hdr); 295 encode_cb_recall(&xdr, args, &hdr);
295 encode_cb_nops(&hdr); 296 encode_cb_nops(&hdr);
296 return 0; 297 return 0;
@@ -338,15 +339,16 @@ decode_cb_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
338 * with a single slot. 339 * with a single slot.
339 */ 340 */
340static int 341static int
341decode_cb_sequence(struct xdr_stream *xdr, struct nfsd4_cb_sequence *res, 342decode_cb_sequence(struct xdr_stream *xdr, struct nfsd4_callback *cb,
342 struct rpc_rqst *rqstp) 343 struct rpc_rqst *rqstp)
343{ 344{
345 struct nfsd4_session *ses = cb->cb_clp->cl_cb_session;
344 struct nfs4_sessionid id; 346 struct nfs4_sessionid id;
345 int status; 347 int status;
346 u32 dummy; 348 u32 dummy;
347 __be32 *p; 349 __be32 *p;
348 350
349 if (res->cbs_minorversion == 0) 351 if (cb->cb_minorversion == 0)
350 return 0; 352 return 0;
351 353
352 status = decode_cb_op_hdr(xdr, OP_CB_SEQUENCE); 354 status = decode_cb_op_hdr(xdr, OP_CB_SEQUENCE);
@@ -362,13 +364,12 @@ decode_cb_sequence(struct xdr_stream *xdr, struct nfsd4_cb_sequence *res,
362 READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); 364 READ_BUF(NFS4_MAX_SESSIONID_LEN + 16);
363 memcpy(id.data, p, NFS4_MAX_SESSIONID_LEN); 365 memcpy(id.data, p, NFS4_MAX_SESSIONID_LEN);
364 p += XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN); 366 p += XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN);
365 if (memcmp(id.data, res->cbs_clp->cl_sessionid.data, 367 if (memcmp(id.data, ses->se_sessionid.data, NFS4_MAX_SESSIONID_LEN)) {
366 NFS4_MAX_SESSIONID_LEN)) {
367 dprintk("%s Invalid session id\n", __func__); 368 dprintk("%s Invalid session id\n", __func__);
368 goto out; 369 goto out;
369 } 370 }
370 READ32(dummy); 371 READ32(dummy);
371 if (dummy != res->cbs_clp->cl_cb_seq_nr) { 372 if (dummy != ses->se_cb_seq_nr) {
372 dprintk("%s Invalid sequence number\n", __func__); 373 dprintk("%s Invalid sequence number\n", __func__);
373 goto out; 374 goto out;
374 } 375 }
@@ -392,7 +393,7 @@ nfs4_xdr_dec_cb_null(struct rpc_rqst *req, __be32 *p)
392 393
393static int 394static int
394nfs4_xdr_dec_cb_recall(struct rpc_rqst *rqstp, __be32 *p, 395nfs4_xdr_dec_cb_recall(struct rpc_rqst *rqstp, __be32 *p,
395 struct nfsd4_cb_sequence *seq) 396 struct nfsd4_callback *cb)
396{ 397{
397 struct xdr_stream xdr; 398 struct xdr_stream xdr;
398 struct nfs4_cb_compound_hdr hdr; 399 struct nfs4_cb_compound_hdr hdr;
@@ -402,8 +403,8 @@ nfs4_xdr_dec_cb_recall(struct rpc_rqst *rqstp, __be32 *p,
402 status = decode_cb_compound_hdr(&xdr, &hdr); 403 status = decode_cb_compound_hdr(&xdr, &hdr);
403 if (status) 404 if (status)
404 goto out; 405 goto out;
405 if (seq) { 406 if (cb) {
406 status = decode_cb_sequence(&xdr, seq, rqstp); 407 status = decode_cb_sequence(&xdr, cb, rqstp);
407 if (status) 408 if (status)
408 goto out; 409 goto out;
409 } 410 }
@@ -472,30 +473,34 @@ static int max_cb_time(void)
472/* Reference counting, callback cleanup, etc., all look racy as heck. 473/* Reference counting, callback cleanup, etc., all look racy as heck.
473 * And why is cl_cb_set an atomic? */ 474 * And why is cl_cb_set an atomic? */
474 475
475int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *cb) 476int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *conn)
476{ 477{
477 struct rpc_timeout timeparms = { 478 struct rpc_timeout timeparms = {
478 .to_initval = max_cb_time(), 479 .to_initval = max_cb_time(),
479 .to_retries = 0, 480 .to_retries = 0,
480 }; 481 };
481 struct rpc_create_args args = { 482 struct rpc_create_args args = {
482 .protocol = XPRT_TRANSPORT_TCP, 483 .net = &init_net,
483 .address = (struct sockaddr *) &cb->cb_addr, 484 .address = (struct sockaddr *) &conn->cb_addr,
484 .addrsize = cb->cb_addrlen, 485 .addrsize = conn->cb_addrlen,
485 .timeout = &timeparms, 486 .timeout = &timeparms,
486 .program = &cb_program, 487 .program = &cb_program,
487 .prognumber = cb->cb_prog,
488 .version = 0, 488 .version = 0,
489 .authflavor = clp->cl_flavor, 489 .authflavor = clp->cl_flavor,
490 .flags = (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET), 490 .flags = (RPC_CLNT_CREATE_NOPING | RPC_CLNT_CREATE_QUIET),
491 .client_name = clp->cl_principal,
492 }; 491 };
493 struct rpc_clnt *client; 492 struct rpc_clnt *client;
494 493
495 if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5)) 494 if (clp->cl_minorversion == 0) {
496 return -EINVAL; 495 if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5))
497 if (cb->cb_minorversion) { 496 return -EINVAL;
498 args.bc_xprt = cb->cb_xprt; 497 args.client_name = clp->cl_principal;
498 args.prognumber = conn->cb_prog,
499 args.protocol = XPRT_TRANSPORT_TCP;
500 clp->cl_cb_ident = conn->cb_ident;
501 } else {
502 args.bc_xprt = conn->cb_xprt;
503 args.prognumber = clp->cl_cb_session->se_cb_prog;
499 args.protocol = XPRT_TRANSPORT_BC_TCP; 504 args.protocol = XPRT_TRANSPORT_BC_TCP;
500 } 505 }
501 /* Create RPC client */ 506 /* Create RPC client */
@@ -505,7 +510,7 @@ int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *cb)
505 PTR_ERR(client)); 510 PTR_ERR(client));
506 return PTR_ERR(client); 511 return PTR_ERR(client);
507 } 512 }
508 nfsd4_set_callback_client(clp, client); 513 clp->cl_cb_client = client;
509 return 0; 514 return 0;
510 515
511} 516}
@@ -518,7 +523,7 @@ static void warn_no_callback_path(struct nfs4_client *clp, int reason)
518 523
519static void nfsd4_cb_probe_done(struct rpc_task *task, void *calldata) 524static void nfsd4_cb_probe_done(struct rpc_task *task, void *calldata)
520{ 525{
521 struct nfs4_client *clp = calldata; 526 struct nfs4_client *clp = container_of(calldata, struct nfs4_client, cl_cb_null);
522 527
523 if (task->tk_status) 528 if (task->tk_status)
524 warn_no_callback_path(clp, task->tk_status); 529 warn_no_callback_path(clp, task->tk_status);
@@ -527,6 +532,8 @@ static void nfsd4_cb_probe_done(struct rpc_task *task, void *calldata)
527} 532}
528 533
529static const struct rpc_call_ops nfsd4_cb_probe_ops = { 534static const struct rpc_call_ops nfsd4_cb_probe_ops = {
535 /* XXX: release method to ensure we set the cb channel down if
536 * necessary on early failure? */
530 .rpc_call_done = nfsd4_cb_probe_done, 537 .rpc_call_done = nfsd4_cb_probe_done,
531}; 538};
532 539
@@ -542,38 +549,42 @@ int set_callback_cred(void)
542 return 0; 549 return 0;
543} 550}
544 551
552static struct workqueue_struct *callback_wq;
545 553
546void do_probe_callback(struct nfs4_client *clp) 554static void do_probe_callback(struct nfs4_client *clp)
547{ 555{
548 struct rpc_message msg = { 556 struct nfsd4_callback *cb = &clp->cl_cb_null;
549 .rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
550 .rpc_argp = clp,
551 .rpc_cred = callback_cred
552 };
553 int status;
554 557
555 status = rpc_call_async(clp->cl_cb_client, &msg, 558 cb->cb_op = NULL;
556 RPC_TASK_SOFT | RPC_TASK_SOFTCONN, 559 cb->cb_clp = clp;
557 &nfsd4_cb_probe_ops, (void *)clp); 560
558 if (status) 561 cb->cb_msg.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL];
559 warn_no_callback_path(clp, status); 562 cb->cb_msg.rpc_argp = NULL;
563 cb->cb_msg.rpc_resp = NULL;
564 cb->cb_msg.rpc_cred = callback_cred;
565
566 cb->cb_ops = &nfsd4_cb_probe_ops;
567
568 queue_work(callback_wq, &cb->cb_work);
560} 569}
561 570
562/* 571/*
563 * Set up the callback client and put a NFSPROC4_CB_NULL on the wire... 572 * Poke the callback thread to process any updates to the callback
573 * parameters, and send a null probe.
564 */ 574 */
565void nfsd4_probe_callback(struct nfs4_client *clp, struct nfs4_cb_conn *cb) 575void nfsd4_probe_callback(struct nfs4_client *clp)
566{ 576{
567 int status; 577 set_bit(NFSD4_CLIENT_CB_UPDATE, &clp->cl_cb_flags);
578 do_probe_callback(clp);
579}
568 580
581void nfsd4_change_callback(struct nfs4_client *clp, struct nfs4_cb_conn *conn)
582{
569 BUG_ON(atomic_read(&clp->cl_cb_set)); 583 BUG_ON(atomic_read(&clp->cl_cb_set));
570 584
571 status = setup_callback_client(clp, cb); 585 spin_lock(&clp->cl_lock);
572 if (status) { 586 memcpy(&clp->cl_cb_conn, conn, sizeof(struct nfs4_cb_conn));
573 warn_no_callback_path(clp, status); 587 spin_unlock(&clp->cl_lock);
574 return;
575 }
576 do_probe_callback(clp);
577} 588}
578 589
579/* 590/*
@@ -584,8 +595,7 @@ void nfsd4_probe_callback(struct nfs4_client *clp, struct nfs4_cb_conn *cb)
584static int nfsd41_cb_setup_sequence(struct nfs4_client *clp, 595static int nfsd41_cb_setup_sequence(struct nfs4_client *clp,
585 struct rpc_task *task) 596 struct rpc_task *task)
586{ 597{
587 struct nfs4_rpc_args *args = task->tk_msg.rpc_argp; 598 u32 *ptr = (u32 *)clp->cl_cb_session->se_sessionid.data;
588 u32 *ptr = (u32 *)clp->cl_sessionid.data;
589 int status = 0; 599 int status = 0;
590 600
591 dprintk("%s: %u:%u:%u:%u\n", __func__, 601 dprintk("%s: %u:%u:%u:%u\n", __func__,
@@ -597,14 +607,6 @@ static int nfsd41_cb_setup_sequence(struct nfs4_client *clp,
597 status = -EAGAIN; 607 status = -EAGAIN;
598 goto out; 608 goto out;
599 } 609 }
600
601 /*
602 * We'll need the clp during XDR encoding and decoding,
603 * and the sequence during decoding to verify the reply
604 */
605 args->args_seq.cbs_clp = clp;
606 task->tk_msg.rpc_resp = &args->args_seq;
607
608out: 610out:
609 dprintk("%s status=%d\n", __func__, status); 611 dprintk("%s status=%d\n", __func__, status);
610 return status; 612 return status;
@@ -616,13 +618,13 @@ out:
616 */ 618 */
617static void nfsd4_cb_prepare(struct rpc_task *task, void *calldata) 619static void nfsd4_cb_prepare(struct rpc_task *task, void *calldata)
618{ 620{
619 struct nfs4_delegation *dp = calldata; 621 struct nfsd4_callback *cb = calldata;
622 struct nfs4_delegation *dp = container_of(cb, struct nfs4_delegation, dl_recall);
620 struct nfs4_client *clp = dp->dl_client; 623 struct nfs4_client *clp = dp->dl_client;
621 struct nfs4_rpc_args *args = task->tk_msg.rpc_argp; 624 u32 minorversion = clp->cl_minorversion;
622 u32 minorversion = clp->cl_cb_conn.cb_minorversion;
623 int status = 0; 625 int status = 0;
624 626
625 args->args_seq.cbs_minorversion = minorversion; 627 cb->cb_minorversion = minorversion;
626 if (minorversion) { 628 if (minorversion) {
627 status = nfsd41_cb_setup_sequence(clp, task); 629 status = nfsd41_cb_setup_sequence(clp, task);
628 if (status) { 630 if (status) {
@@ -639,19 +641,20 @@ static void nfsd4_cb_prepare(struct rpc_task *task, void *calldata)
639 641
640static void nfsd4_cb_done(struct rpc_task *task, void *calldata) 642static void nfsd4_cb_done(struct rpc_task *task, void *calldata)
641{ 643{
642 struct nfs4_delegation *dp = calldata; 644 struct nfsd4_callback *cb = calldata;
645 struct nfs4_delegation *dp = container_of(cb, struct nfs4_delegation, dl_recall);
643 struct nfs4_client *clp = dp->dl_client; 646 struct nfs4_client *clp = dp->dl_client;
644 647
645 dprintk("%s: minorversion=%d\n", __func__, 648 dprintk("%s: minorversion=%d\n", __func__,
646 clp->cl_cb_conn.cb_minorversion); 649 clp->cl_minorversion);
647 650
648 if (clp->cl_cb_conn.cb_minorversion) { 651 if (clp->cl_minorversion) {
649 /* No need for lock, access serialized in nfsd4_cb_prepare */ 652 /* No need for lock, access serialized in nfsd4_cb_prepare */
650 ++clp->cl_cb_seq_nr; 653 ++clp->cl_cb_session->se_cb_seq_nr;
651 clear_bit(0, &clp->cl_cb_slot_busy); 654 clear_bit(0, &clp->cl_cb_slot_busy);
652 rpc_wake_up_next(&clp->cl_cb_waitq); 655 rpc_wake_up_next(&clp->cl_cb_waitq);
653 dprintk("%s: freed slot, new seqid=%d\n", __func__, 656 dprintk("%s: freed slot, new seqid=%d\n", __func__,
654 clp->cl_cb_seq_nr); 657 clp->cl_cb_session->se_cb_seq_nr);
655 658
656 /* We're done looking into the sequence information */ 659 /* We're done looking into the sequence information */
657 task->tk_msg.rpc_resp = NULL; 660 task->tk_msg.rpc_resp = NULL;
@@ -661,7 +664,8 @@ static void nfsd4_cb_done(struct rpc_task *task, void *calldata)
661 664
662static void nfsd4_cb_recall_done(struct rpc_task *task, void *calldata) 665static void nfsd4_cb_recall_done(struct rpc_task *task, void *calldata)
663{ 666{
664 struct nfs4_delegation *dp = calldata; 667 struct nfsd4_callback *cb = calldata;
668 struct nfs4_delegation *dp = container_of(cb, struct nfs4_delegation, dl_recall);
665 struct nfs4_client *clp = dp->dl_client; 669 struct nfs4_client *clp = dp->dl_client;
666 struct rpc_clnt *current_rpc_client = clp->cl_cb_client; 670 struct rpc_clnt *current_rpc_client = clp->cl_cb_client;
667 671
@@ -706,7 +710,8 @@ static void nfsd4_cb_recall_done(struct rpc_task *task, void *calldata)
706 710
707static void nfsd4_cb_recall_release(void *calldata) 711static void nfsd4_cb_recall_release(void *calldata)
708{ 712{
709 struct nfs4_delegation *dp = calldata; 713 struct nfsd4_callback *cb = calldata;
714 struct nfs4_delegation *dp = container_of(cb, struct nfs4_delegation, dl_recall);
710 715
711 nfs4_put_delegation(dp); 716 nfs4_put_delegation(dp);
712} 717}
@@ -717,8 +722,6 @@ static const struct rpc_call_ops nfsd4_cb_recall_ops = {
717 .rpc_release = nfsd4_cb_recall_release, 722 .rpc_release = nfsd4_cb_recall_release,
718}; 723};
719 724
720static struct workqueue_struct *callback_wq;
721
722int nfsd4_create_callback_queue(void) 725int nfsd4_create_callback_queue(void)
723{ 726{
724 callback_wq = create_singlethread_workqueue("nfsd4_callbacks"); 727 callback_wq = create_singlethread_workqueue("nfsd4_callbacks");
@@ -733,57 +736,88 @@ void nfsd4_destroy_callback_queue(void)
733} 736}
734 737
735/* must be called under the state lock */ 738/* must be called under the state lock */
736void nfsd4_set_callback_client(struct nfs4_client *clp, struct rpc_clnt *new) 739void nfsd4_shutdown_callback(struct nfs4_client *clp)
737{ 740{
738 struct rpc_clnt *old = clp->cl_cb_client; 741 set_bit(NFSD4_CLIENT_KILL, &clp->cl_cb_flags);
739
740 clp->cl_cb_client = new;
741 /* 742 /*
742 * After this, any work that saw the old value of cl_cb_client will 743 * Note this won't actually result in a null callback;
743 * be gone: 744 * instead, nfsd4_do_callback_rpc() will detect the killed
745 * client, destroy the rpc client, and stop:
744 */ 746 */
747 do_probe_callback(clp);
745 flush_workqueue(callback_wq); 748 flush_workqueue(callback_wq);
746 /* So we can safely shut it down: */
747 if (old)
748 rpc_shutdown_client(old);
749} 749}
750 750
751/* 751void nfsd4_release_cb(struct nfsd4_callback *cb)
752 * called with dp->dl_count inc'ed.
753 */
754static void _nfsd4_cb_recall(struct nfs4_delegation *dp)
755{ 752{
756 struct nfs4_client *clp = dp->dl_client; 753 if (cb->cb_ops->rpc_release)
757 struct rpc_clnt *clnt = clp->cl_cb_client; 754 cb->cb_ops->rpc_release(cb);
758 struct nfs4_rpc_args *args = &dp->dl_recall.cb_args; 755}
759 struct rpc_message msg = {
760 .rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_RECALL],
761 .rpc_cred = callback_cred
762 };
763 756
764 if (clnt == NULL) { 757void nfsd4_process_cb_update(struct nfsd4_callback *cb)
765 nfs4_put_delegation(dp); 758{
766 return; /* Client is shutting down; give up. */ 759 struct nfs4_cb_conn conn;
760 struct nfs4_client *clp = cb->cb_clp;
761 int err;
762
763 /*
764 * This is either an update, or the client dying; in either case,
765 * kill the old client:
766 */
767 if (clp->cl_cb_client) {
768 rpc_shutdown_client(clp->cl_cb_client);
769 clp->cl_cb_client = NULL;
767 } 770 }
771 if (test_bit(NFSD4_CLIENT_KILL, &clp->cl_cb_flags))
772 return;
773 spin_lock(&clp->cl_lock);
774 /*
775 * Only serialized callback code is allowed to clear these
776 * flags; main nfsd code can only set them:
777 */
778 BUG_ON(!clp->cl_cb_flags);
779 clear_bit(NFSD4_CLIENT_CB_UPDATE, &clp->cl_cb_flags);
780 memcpy(&conn, &cb->cb_clp->cl_cb_conn, sizeof(struct nfs4_cb_conn));
781 spin_unlock(&clp->cl_lock);
768 782
769 args->args_op = dp; 783 err = setup_callback_client(clp, &conn);
770 msg.rpc_argp = args; 784 if (err)
771 dp->dl_retries = 1; 785 warn_no_callback_path(clp, err);
772 rpc_call_async(clnt, &msg, RPC_TASK_SOFT, &nfsd4_cb_recall_ops, dp);
773} 786}
774 787
775void nfsd4_do_callback_rpc(struct work_struct *w) 788void nfsd4_do_callback_rpc(struct work_struct *w)
776{ 789{
777 /* XXX: for now, just send off delegation recall. */ 790 struct nfsd4_callback *cb = container_of(w, struct nfsd4_callback, cb_work);
778 /* In future, generalize to handle any sort of callback. */ 791 struct nfs4_client *clp = cb->cb_clp;
779 struct nfsd4_callback *c = container_of(w, struct nfsd4_callback, cb_work); 792 struct rpc_clnt *clnt;
780 struct nfs4_delegation *dp = container_of(c, struct nfs4_delegation, dl_recall);
781 793
782 _nfsd4_cb_recall(dp); 794 if (clp->cl_cb_flags)
783} 795 nfsd4_process_cb_update(cb);
784 796
797 clnt = clp->cl_cb_client;
798 if (!clnt) {
799 /* Callback channel broken, or client killed; give up: */
800 nfsd4_release_cb(cb);
801 return;
802 }
803 rpc_call_async(clnt, &cb->cb_msg, RPC_TASK_SOFT | RPC_TASK_SOFTCONN,
804 cb->cb_ops, cb);
805}
785 806
786void nfsd4_cb_recall(struct nfs4_delegation *dp) 807void nfsd4_cb_recall(struct nfs4_delegation *dp)
787{ 808{
809 struct nfsd4_callback *cb = &dp->dl_recall;
810
811 dp->dl_retries = 1;
812 cb->cb_op = dp;
813 cb->cb_clp = dp->dl_client;
814 cb->cb_msg.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_RECALL];
815 cb->cb_msg.rpc_argp = cb;
816 cb->cb_msg.rpc_resp = cb;
817 cb->cb_msg.rpc_cred = callback_cred;
818
819 cb->cb_ops = &nfsd4_cb_recall_ops;
820 dp->dl_retries = 1;
821
788 queue_work(callback_wq, &dp->dl_recall.cb_work); 822 queue_work(callback_wq, &dp->dl_recall.cb_work);
789} 823}
diff --git a/fs/nfsd/nfs4idmap.c b/fs/nfsd/nfs4idmap.c
index c78dbf493424..f0695e815f0e 100644
--- a/fs/nfsd/nfs4idmap.c
+++ b/fs/nfsd/nfs4idmap.c
@@ -482,109 +482,26 @@ nfsd_idmap_shutdown(void)
482 cache_unregister(&nametoid_cache); 482 cache_unregister(&nametoid_cache);
483} 483}
484 484
485/*
486 * Deferred request handling
487 */
488
489struct idmap_defer_req {
490 struct cache_req req;
491 struct cache_deferred_req deferred_req;
492 wait_queue_head_t waitq;
493 atomic_t count;
494};
495
496static inline void
497put_mdr(struct idmap_defer_req *mdr)
498{
499 if (atomic_dec_and_test(&mdr->count))
500 kfree(mdr);
501}
502
503static inline void
504get_mdr(struct idmap_defer_req *mdr)
505{
506 atomic_inc(&mdr->count);
507}
508
509static void
510idmap_revisit(struct cache_deferred_req *dreq, int toomany)
511{
512 struct idmap_defer_req *mdr =
513 container_of(dreq, struct idmap_defer_req, deferred_req);
514
515 wake_up(&mdr->waitq);
516 put_mdr(mdr);
517}
518
519static struct cache_deferred_req *
520idmap_defer(struct cache_req *req)
521{
522 struct idmap_defer_req *mdr =
523 container_of(req, struct idmap_defer_req, req);
524
525 mdr->deferred_req.revisit = idmap_revisit;
526 get_mdr(mdr);
527 return (&mdr->deferred_req);
528}
529
530static inline int
531do_idmap_lookup(struct ent *(*lookup_fn)(struct ent *), struct ent *key,
532 struct cache_detail *detail, struct ent **item,
533 struct idmap_defer_req *mdr)
534{
535 *item = lookup_fn(key);
536 if (!*item)
537 return -ENOMEM;
538 return cache_check(detail, &(*item)->h, &mdr->req);
539}
540
541static inline int
542do_idmap_lookup_nowait(struct ent *(*lookup_fn)(struct ent *),
543 struct ent *key, struct cache_detail *detail,
544 struct ent **item)
545{
546 int ret = -ENOMEM;
547
548 *item = lookup_fn(key);
549 if (!*item)
550 goto out_err;
551 ret = -ETIMEDOUT;
552 if (!test_bit(CACHE_VALID, &(*item)->h.flags)
553 || (*item)->h.expiry_time < get_seconds()
554 || detail->flush_time > (*item)->h.last_refresh)
555 goto out_put;
556 ret = -ENOENT;
557 if (test_bit(CACHE_NEGATIVE, &(*item)->h.flags))
558 goto out_put;
559 return 0;
560out_put:
561 cache_put(&(*item)->h, detail);
562out_err:
563 *item = NULL;
564 return ret;
565}
566
567static int 485static int
568idmap_lookup(struct svc_rqst *rqstp, 486idmap_lookup(struct svc_rqst *rqstp,
569 struct ent *(*lookup_fn)(struct ent *), struct ent *key, 487 struct ent *(*lookup_fn)(struct ent *), struct ent *key,
570 struct cache_detail *detail, struct ent **item) 488 struct cache_detail *detail, struct ent **item)
571{ 489{
572 struct idmap_defer_req *mdr;
573 int ret; 490 int ret;
574 491
575 mdr = kzalloc(sizeof(*mdr), GFP_KERNEL); 492 *item = lookup_fn(key);
576 if (!mdr) 493 if (!*item)
577 return -ENOMEM; 494 return -ENOMEM;
578 atomic_set(&mdr->count, 1); 495 retry:
579 init_waitqueue_head(&mdr->waitq); 496 ret = cache_check(detail, &(*item)->h, &rqstp->rq_chandle);
580 mdr->req.defer = idmap_defer; 497
581 ret = do_idmap_lookup(lookup_fn, key, detail, item, mdr); 498 if (ret == -ETIMEDOUT) {
582 if (ret == -EAGAIN) { 499 struct ent *prev_item = *item;
583 wait_event_interruptible_timeout(mdr->waitq, 500 *item = lookup_fn(key);
584 test_bit(CACHE_VALID, &(*item)->h.flags), 1 * HZ); 501 if (*item != prev_item)
585 ret = do_idmap_lookup_nowait(lookup_fn, key, detail, item); 502 goto retry;
503 cache_put(&(*item)->h, detail);
586 } 504 }
587 put_mdr(mdr);
588 return ret; 505 return ret;
589} 506}
590 507
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 59ec449b0c7f..0cdfd022bb7b 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1031,8 +1031,11 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
1031 resp->cstate.session = NULL; 1031 resp->cstate.session = NULL;
1032 fh_init(&resp->cstate.current_fh, NFS4_FHSIZE); 1032 fh_init(&resp->cstate.current_fh, NFS4_FHSIZE);
1033 fh_init(&resp->cstate.save_fh, NFS4_FHSIZE); 1033 fh_init(&resp->cstate.save_fh, NFS4_FHSIZE);
1034 /* Use the deferral mechanism only for NFSv4.0 compounds */ 1034 /*
1035 rqstp->rq_usedeferral = (args->minorversion == 0); 1035 * Don't use the deferral mechanism for NFSv4; compounds make it
1036 * too hard to avoid non-idempotency problems.
1037 */
1038 rqstp->rq_usedeferral = 0;
1036 1039
1037 /* 1040 /*
1038 * According to RFC3010, this takes precedence over all other errors. 1041 * According to RFC3010, this takes precedence over all other errors.
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index a7292fcf7718..9019e8ec9dc8 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -207,7 +207,6 @@ alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_f
207{ 207{
208 struct nfs4_delegation *dp; 208 struct nfs4_delegation *dp;
209 struct nfs4_file *fp = stp->st_file; 209 struct nfs4_file *fp = stp->st_file;
210 struct nfs4_cb_conn *cb = &stp->st_stateowner->so_client->cl_cb_conn;
211 210
212 dprintk("NFSD alloc_init_deleg\n"); 211 dprintk("NFSD alloc_init_deleg\n");
213 /* 212 /*
@@ -234,7 +233,6 @@ alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_f
234 nfs4_file_get_access(fp, O_RDONLY); 233 nfs4_file_get_access(fp, O_RDONLY);
235 dp->dl_flock = NULL; 234 dp->dl_flock = NULL;
236 dp->dl_type = type; 235 dp->dl_type = type;
237 dp->dl_ident = cb->cb_ident;
238 dp->dl_stateid.si_boot = boot_time; 236 dp->dl_stateid.si_boot = boot_time;
239 dp->dl_stateid.si_stateownerid = current_delegid++; 237 dp->dl_stateid.si_stateownerid = current_delegid++;
240 dp->dl_stateid.si_fileid = 0; 238 dp->dl_stateid.si_fileid = 0;
@@ -535,171 +533,258 @@ gen_sessionid(struct nfsd4_session *ses)
535 */ 533 */
536#define NFSD_MIN_HDR_SEQ_SZ (24 + 12 + 44) 534#define NFSD_MIN_HDR_SEQ_SZ (24 + 12 + 44)
537 535
536static void
537free_session_slots(struct nfsd4_session *ses)
538{
539 int i;
540
541 for (i = 0; i < ses->se_fchannel.maxreqs; i++)
542 kfree(ses->se_slots[i]);
543}
544
538/* 545/*
539 * Give the client the number of ca_maxresponsesize_cached slots it 546 * We don't actually need to cache the rpc and session headers, so we
540 * requests, of size bounded by NFSD_SLOT_CACHE_SIZE, 547 * can allocate a little less for each slot:
541 * NFSD_MAX_MEM_PER_SESSION, and nfsd_drc_max_mem. Do not allow more 548 */
542 * than NFSD_MAX_SLOTS_PER_SESSION. 549static inline int slot_bytes(struct nfsd4_channel_attrs *ca)
543 * 550{
544 * If we run out of reserved DRC memory we should (up to a point) 551 return ca->maxresp_cached - NFSD_MIN_HDR_SEQ_SZ;
552}
553
554static int nfsd4_sanitize_slot_size(u32 size)
555{
556 size -= NFSD_MIN_HDR_SEQ_SZ; /* We don't cache the rpc header */
557 size = min_t(u32, size, NFSD_SLOT_CACHE_SIZE);
558
559 return size;
560}
561
562/*
563 * XXX: If we run out of reserved DRC memory we could (up to a point)
545 * re-negotiate active sessions and reduce their slot usage to make 564 * re-negotiate active sessions and reduce their slot usage to make
546 * rooom for new connections. For now we just fail the create session. 565 * rooom for new connections. For now we just fail the create session.
547 */ 566 */
548static int set_forechannel_drc_size(struct nfsd4_channel_attrs *fchan) 567static int nfsd4_get_drc_mem(int slotsize, u32 num)
549{ 568{
550 int mem, size = fchan->maxresp_cached; 569 int avail;
551 570
552 if (fchan->maxreqs < 1) 571 num = min_t(u32, num, NFSD_MAX_SLOTS_PER_SESSION);
553 return nfserr_inval;
554 572
555 if (size < NFSD_MIN_HDR_SEQ_SZ) 573 spin_lock(&nfsd_drc_lock);
556 size = NFSD_MIN_HDR_SEQ_SZ; 574 avail = min_t(int, NFSD_MAX_MEM_PER_SESSION,
557 size -= NFSD_MIN_HDR_SEQ_SZ; 575 nfsd_drc_max_mem - nfsd_drc_mem_used);
558 if (size > NFSD_SLOT_CACHE_SIZE) 576 num = min_t(int, num, avail / slotsize);
559 size = NFSD_SLOT_CACHE_SIZE; 577 nfsd_drc_mem_used += num * slotsize;
560 578 spin_unlock(&nfsd_drc_lock);
561 /* bound the maxreqs by NFSD_MAX_MEM_PER_SESSION */
562 mem = fchan->maxreqs * size;
563 if (mem > NFSD_MAX_MEM_PER_SESSION) {
564 fchan->maxreqs = NFSD_MAX_MEM_PER_SESSION / size;
565 if (fchan->maxreqs > NFSD_MAX_SLOTS_PER_SESSION)
566 fchan->maxreqs = NFSD_MAX_SLOTS_PER_SESSION;
567 mem = fchan->maxreqs * size;
568 }
569 579
580 return num;
581}
582
583static void nfsd4_put_drc_mem(int slotsize, int num)
584{
570 spin_lock(&nfsd_drc_lock); 585 spin_lock(&nfsd_drc_lock);
571 /* bound the total session drc memory ussage */ 586 nfsd_drc_mem_used -= slotsize * num;
572 if (mem + nfsd_drc_mem_used > nfsd_drc_max_mem) {
573 fchan->maxreqs = (nfsd_drc_max_mem - nfsd_drc_mem_used) / size;
574 mem = fchan->maxreqs * size;
575 }
576 nfsd_drc_mem_used += mem;
577 spin_unlock(&nfsd_drc_lock); 587 spin_unlock(&nfsd_drc_lock);
588}
578 589
579 if (fchan->maxreqs == 0) 590static struct nfsd4_session *alloc_session(int slotsize, int numslots)
580 return nfserr_jukebox; 591{
592 struct nfsd4_session *new;
593 int mem, i;
581 594
582 fchan->maxresp_cached = size + NFSD_MIN_HDR_SEQ_SZ; 595 BUILD_BUG_ON(NFSD_MAX_SLOTS_PER_SESSION * sizeof(struct nfsd4_slot *)
583 return 0; 596 + sizeof(struct nfsd4_session) > PAGE_SIZE);
597 mem = numslots * sizeof(struct nfsd4_slot *);
598
599 new = kzalloc(sizeof(*new) + mem, GFP_KERNEL);
600 if (!new)
601 return NULL;
602 /* allocate each struct nfsd4_slot and data cache in one piece */
603 for (i = 0; i < numslots; i++) {
604 mem = sizeof(struct nfsd4_slot) + slotsize;
605 new->se_slots[i] = kzalloc(mem, GFP_KERNEL);
606 if (!new->se_slots[i])
607 goto out_free;
608 }
609 return new;
610out_free:
611 while (i--)
612 kfree(new->se_slots[i]);
613 kfree(new);
614 return NULL;
584} 615}
585 616
586/* 617static void init_forechannel_attrs(struct nfsd4_channel_attrs *new, struct nfsd4_channel_attrs *req, int numslots, int slotsize)
587 * fchan holds the client values on input, and the server values on output
588 * sv_max_mesg is the maximum payload plus one page for overhead.
589 */
590static int init_forechannel_attrs(struct svc_rqst *rqstp,
591 struct nfsd4_channel_attrs *session_fchan,
592 struct nfsd4_channel_attrs *fchan)
593{ 618{
594 int status = 0; 619 u32 maxrpc = nfsd_serv->sv_max_mesg;
595 __u32 maxcount = nfsd_serv->sv_max_mesg;
596 620
597 /* headerpadsz set to zero in encode routine */ 621 new->maxreqs = numslots;
622 new->maxresp_cached = slotsize + NFSD_MIN_HDR_SEQ_SZ;
623 new->maxreq_sz = min_t(u32, req->maxreq_sz, maxrpc);
624 new->maxresp_sz = min_t(u32, req->maxresp_sz, maxrpc);
625 new->maxops = min_t(u32, req->maxops, NFSD_MAX_OPS_PER_COMPOUND);
626}
598 627
599 /* Use the client's max request and max response size if possible */ 628static void free_conn(struct nfsd4_conn *c)
600 if (fchan->maxreq_sz > maxcount) 629{
601 fchan->maxreq_sz = maxcount; 630 svc_xprt_put(c->cn_xprt);
602 session_fchan->maxreq_sz = fchan->maxreq_sz; 631 kfree(c);
632}
603 633
604 if (fchan->maxresp_sz > maxcount) 634static void nfsd4_conn_lost(struct svc_xpt_user *u)
605 fchan->maxresp_sz = maxcount; 635{
606 session_fchan->maxresp_sz = fchan->maxresp_sz; 636 struct nfsd4_conn *c = container_of(u, struct nfsd4_conn, cn_xpt_user);
637 struct nfs4_client *clp = c->cn_session->se_client;
607 638
608 /* Use the client's maxops if possible */ 639 spin_lock(&clp->cl_lock);
609 if (fchan->maxops > NFSD_MAX_OPS_PER_COMPOUND) 640 if (!list_empty(&c->cn_persession)) {
610 fchan->maxops = NFSD_MAX_OPS_PER_COMPOUND; 641 list_del(&c->cn_persession);
611 session_fchan->maxops = fchan->maxops; 642 free_conn(c);
643 }
644 spin_unlock(&clp->cl_lock);
645}
612 646
613 /* FIXME: Error means no more DRC pages so the server should 647static struct nfsd4_conn *alloc_conn(struct svc_rqst *rqstp, u32 flags)
614 * recover pages from existing sessions. For now fail session 648{
615 * creation. 649 struct nfsd4_conn *conn;
616 */
617 status = set_forechannel_drc_size(fchan);
618 650
619 session_fchan->maxresp_cached = fchan->maxresp_cached; 651 conn = kmalloc(sizeof(struct nfsd4_conn), GFP_KERNEL);
620 session_fchan->maxreqs = fchan->maxreqs; 652 if (!conn)
653 return NULL;
654 svc_xprt_get(rqstp->rq_xprt);
655 conn->cn_xprt = rqstp->rq_xprt;
656 conn->cn_flags = flags;
657 INIT_LIST_HEAD(&conn->cn_xpt_user.list);
658 return conn;
659}
621 660
622 dprintk("%s status %d\n", __func__, status); 661static void __nfsd4_hash_conn(struct nfsd4_conn *conn, struct nfsd4_session *ses)
623 return status; 662{
663 conn->cn_session = ses;
664 list_add(&conn->cn_persession, &ses->se_conns);
624} 665}
625 666
626static void 667static void nfsd4_hash_conn(struct nfsd4_conn *conn, struct nfsd4_session *ses)
627free_session_slots(struct nfsd4_session *ses)
628{ 668{
629 int i; 669 struct nfs4_client *clp = ses->se_client;
630 670
631 for (i = 0; i < ses->se_fchannel.maxreqs; i++) 671 spin_lock(&clp->cl_lock);
632 kfree(ses->se_slots[i]); 672 __nfsd4_hash_conn(conn, ses);
673 spin_unlock(&clp->cl_lock);
633} 674}
634 675
635/* 676static void nfsd4_register_conn(struct nfsd4_conn *conn)
636 * We don't actually need to cache the rpc and session headers, so we
637 * can allocate a little less for each slot:
638 */
639static inline int slot_bytes(struct nfsd4_channel_attrs *ca)
640{ 677{
641 return ca->maxresp_cached - NFSD_MIN_HDR_SEQ_SZ; 678 conn->cn_xpt_user.callback = nfsd4_conn_lost;
679 register_xpt_user(conn->cn_xprt, &conn->cn_xpt_user);
642} 680}
643 681
644static int 682static __be32 nfsd4_new_conn(struct svc_rqst *rqstp, struct nfsd4_session *ses)
645alloc_init_session(struct svc_rqst *rqstp, struct nfs4_client *clp,
646 struct nfsd4_create_session *cses)
647{ 683{
648 struct nfsd4_session *new, tmp; 684 struct nfsd4_conn *conn;
649 struct nfsd4_slot *sp; 685 u32 flags = NFS4_CDFC4_FORE;
650 int idx, slotsize, cachesize, i;
651 int status;
652 686
653 memset(&tmp, 0, sizeof(tmp)); 687 if (ses->se_flags & SESSION4_BACK_CHAN)
688 flags |= NFS4_CDFC4_BACK;
689 conn = alloc_conn(rqstp, flags);
690 if (!conn)
691 return nfserr_jukebox;
692 nfsd4_hash_conn(conn, ses);
693 nfsd4_register_conn(conn);
694 return nfs_ok;
695}
654 696
655 /* FIXME: For now, we just accept the client back channel attributes. */ 697static void nfsd4_del_conns(struct nfsd4_session *s)
656 tmp.se_bchannel = cses->back_channel; 698{
657 status = init_forechannel_attrs(rqstp, &tmp.se_fchannel, 699 struct nfs4_client *clp = s->se_client;
658 &cses->fore_channel); 700 struct nfsd4_conn *c;
659 if (status)
660 goto out;
661 701
662 BUILD_BUG_ON(NFSD_MAX_SLOTS_PER_SESSION * sizeof(struct nfsd4_slot) 702 spin_lock(&clp->cl_lock);
663 + sizeof(struct nfsd4_session) > PAGE_SIZE); 703 while (!list_empty(&s->se_conns)) {
704 c = list_first_entry(&s->se_conns, struct nfsd4_conn, cn_persession);
705 list_del_init(&c->cn_persession);
706 spin_unlock(&clp->cl_lock);
664 707
665 status = nfserr_jukebox; 708 unregister_xpt_user(c->cn_xprt, &c->cn_xpt_user);
666 /* allocate struct nfsd4_session and slot table pointers in one piece */ 709 free_conn(c);
667 slotsize = tmp.se_fchannel.maxreqs * sizeof(struct nfsd4_slot *);
668 new = kzalloc(sizeof(*new) + slotsize, GFP_KERNEL);
669 if (!new)
670 goto out;
671 710
672 memcpy(new, &tmp, sizeof(*new)); 711 spin_lock(&clp->cl_lock);
712 }
713 spin_unlock(&clp->cl_lock);
714}
673 715
674 /* allocate each struct nfsd4_slot and data cache in one piece */ 716void free_session(struct kref *kref)
675 cachesize = slot_bytes(&new->se_fchannel); 717{
676 for (i = 0; i < new->se_fchannel.maxreqs; i++) { 718 struct nfsd4_session *ses;
677 sp = kzalloc(sizeof(*sp) + cachesize, GFP_KERNEL); 719 int mem;
678 if (!sp) 720
679 goto out_free; 721 ses = container_of(kref, struct nfsd4_session, se_ref);
680 new->se_slots[i] = sp; 722 nfsd4_del_conns(ses);
723 spin_lock(&nfsd_drc_lock);
724 mem = ses->se_fchannel.maxreqs * slot_bytes(&ses->se_fchannel);
725 nfsd_drc_mem_used -= mem;
726 spin_unlock(&nfsd_drc_lock);
727 free_session_slots(ses);
728 kfree(ses);
729}
730
731static struct nfsd4_session *alloc_init_session(struct svc_rqst *rqstp, struct nfs4_client *clp, struct nfsd4_create_session *cses)
732{
733 struct nfsd4_session *new;
734 struct nfsd4_channel_attrs *fchan = &cses->fore_channel;
735 int numslots, slotsize;
736 int status;
737 int idx;
738
739 /*
740 * Note decreasing slot size below client's request may
741 * make it difficult for client to function correctly, whereas
742 * decreasing the number of slots will (just?) affect
743 * performance. When short on memory we therefore prefer to
744 * decrease number of slots instead of their size.
745 */
746 slotsize = nfsd4_sanitize_slot_size(fchan->maxresp_cached);
747 numslots = nfsd4_get_drc_mem(slotsize, fchan->maxreqs);
748
749 new = alloc_session(slotsize, numslots);
750 if (!new) {
751 nfsd4_put_drc_mem(slotsize, fchan->maxreqs);
752 return NULL;
681 } 753 }
754 init_forechannel_attrs(&new->se_fchannel, fchan, numslots, slotsize);
682 755
683 new->se_client = clp; 756 new->se_client = clp;
684 gen_sessionid(new); 757 gen_sessionid(new);
685 idx = hash_sessionid(&new->se_sessionid);
686 memcpy(clp->cl_sessionid.data, new->se_sessionid.data,
687 NFS4_MAX_SESSIONID_LEN);
688 758
759 INIT_LIST_HEAD(&new->se_conns);
760
761 new->se_cb_seq_nr = 1;
689 new->se_flags = cses->flags; 762 new->se_flags = cses->flags;
763 new->se_cb_prog = cses->callback_prog;
690 kref_init(&new->se_ref); 764 kref_init(&new->se_ref);
765 idx = hash_sessionid(&new->se_sessionid);
691 spin_lock(&client_lock); 766 spin_lock(&client_lock);
692 list_add(&new->se_hash, &sessionid_hashtbl[idx]); 767 list_add(&new->se_hash, &sessionid_hashtbl[idx]);
693 list_add(&new->se_perclnt, &clp->cl_sessions); 768 list_add(&new->se_perclnt, &clp->cl_sessions);
694 spin_unlock(&client_lock); 769 spin_unlock(&client_lock);
695 770
696 status = nfs_ok; 771 status = nfsd4_new_conn(rqstp, new);
697out: 772 /* whoops: benny points out, status is ignored! (err, or bogus) */
698 return status; 773 if (status) {
699out_free: 774 free_session(&new->se_ref);
700 free_session_slots(new); 775 return NULL;
701 kfree(new); 776 }
702 goto out; 777 if (!clp->cl_cb_session && (cses->flags & SESSION4_BACK_CHAN)) {
778 struct sockaddr *sa = svc_addr(rqstp);
779
780 clp->cl_cb_session = new;
781 clp->cl_cb_conn.cb_xprt = rqstp->rq_xprt;
782 svc_xprt_get(rqstp->rq_xprt);
783 rpc_copy_addr((struct sockaddr *)&clp->cl_cb_conn.cb_addr, sa);
784 clp->cl_cb_conn.cb_addrlen = svc_addr_len(sa);
785 nfsd4_probe_callback(clp);
786 }
787 return new;
703} 788}
704 789
705/* caller must hold client_lock */ 790/* caller must hold client_lock */
@@ -731,21 +816,6 @@ unhash_session(struct nfsd4_session *ses)
731 list_del(&ses->se_perclnt); 816 list_del(&ses->se_perclnt);
732} 817}
733 818
734void
735free_session(struct kref *kref)
736{
737 struct nfsd4_session *ses;
738 int mem;
739
740 ses = container_of(kref, struct nfsd4_session, se_ref);
741 spin_lock(&nfsd_drc_lock);
742 mem = ses->se_fchannel.maxreqs * slot_bytes(&ses->se_fchannel);
743 nfsd_drc_mem_used -= mem;
744 spin_unlock(&nfsd_drc_lock);
745 free_session_slots(ses);
746 kfree(ses);
747}
748
749/* must be called under the client_lock */ 819/* must be called under the client_lock */
750static inline void 820static inline void
751renew_client_locked(struct nfs4_client *clp) 821renew_client_locked(struct nfs4_client *clp)
@@ -812,6 +882,13 @@ static struct nfs4_client *alloc_client(struct xdr_netobj name)
812static inline void 882static inline void
813free_client(struct nfs4_client *clp) 883free_client(struct nfs4_client *clp)
814{ 884{
885 while (!list_empty(&clp->cl_sessions)) {
886 struct nfsd4_session *ses;
887 ses = list_entry(clp->cl_sessions.next, struct nfsd4_session,
888 se_perclnt);
889 list_del(&ses->se_perclnt);
890 nfsd4_put_session(ses);
891 }
815 if (clp->cl_cred.cr_group_info) 892 if (clp->cl_cred.cr_group_info)
816 put_group_info(clp->cl_cred.cr_group_info); 893 put_group_info(clp->cl_cred.cr_group_info);
817 kfree(clp->cl_principal); 894 kfree(clp->cl_principal);
@@ -838,15 +915,12 @@ release_session_client(struct nfsd4_session *session)
838static inline void 915static inline void
839unhash_client_locked(struct nfs4_client *clp) 916unhash_client_locked(struct nfs4_client *clp)
840{ 917{
918 struct nfsd4_session *ses;
919
841 mark_client_expired(clp); 920 mark_client_expired(clp);
842 list_del(&clp->cl_lru); 921 list_del(&clp->cl_lru);
843 while (!list_empty(&clp->cl_sessions)) { 922 list_for_each_entry(ses, &clp->cl_sessions, se_perclnt)
844 struct nfsd4_session *ses; 923 list_del_init(&ses->se_hash);
845 ses = list_entry(clp->cl_sessions.next, struct nfsd4_session,
846 se_perclnt);
847 unhash_session(ses);
848 nfsd4_put_session(ses);
849 }
850} 924}
851 925
852static void 926static void
@@ -875,7 +949,7 @@ expire_client(struct nfs4_client *clp)
875 sop = list_entry(clp->cl_openowners.next, struct nfs4_stateowner, so_perclient); 949 sop = list_entry(clp->cl_openowners.next, struct nfs4_stateowner, so_perclient);
876 release_openowner(sop); 950 release_openowner(sop);
877 } 951 }
878 nfsd4_set_callback_client(clp, NULL); 952 nfsd4_shutdown_callback(clp);
879 if (clp->cl_cb_conn.cb_xprt) 953 if (clp->cl_cb_conn.cb_xprt)
880 svc_xprt_put(clp->cl_cb_conn.cb_xprt); 954 svc_xprt_put(clp->cl_cb_conn.cb_xprt);
881 list_del(&clp->cl_idhash); 955 list_del(&clp->cl_idhash);
@@ -960,6 +1034,8 @@ static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir,
960 if (clp == NULL) 1034 if (clp == NULL)
961 return NULL; 1035 return NULL;
962 1036
1037 INIT_LIST_HEAD(&clp->cl_sessions);
1038
963 princ = svc_gss_principal(rqstp); 1039 princ = svc_gss_principal(rqstp);
964 if (princ) { 1040 if (princ) {
965 clp->cl_principal = kstrdup(princ, GFP_KERNEL); 1041 clp->cl_principal = kstrdup(princ, GFP_KERNEL);
@@ -976,8 +1052,9 @@ static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir,
976 INIT_LIST_HEAD(&clp->cl_strhash); 1052 INIT_LIST_HEAD(&clp->cl_strhash);
977 INIT_LIST_HEAD(&clp->cl_openowners); 1053 INIT_LIST_HEAD(&clp->cl_openowners);
978 INIT_LIST_HEAD(&clp->cl_delegations); 1054 INIT_LIST_HEAD(&clp->cl_delegations);
979 INIT_LIST_HEAD(&clp->cl_sessions);
980 INIT_LIST_HEAD(&clp->cl_lru); 1055 INIT_LIST_HEAD(&clp->cl_lru);
1056 spin_lock_init(&clp->cl_lock);
1057 INIT_WORK(&clp->cl_cb_null.cb_work, nfsd4_do_callback_rpc);
981 clp->cl_time = get_seconds(); 1058 clp->cl_time = get_seconds();
982 clear_bit(0, &clp->cl_cb_slot_busy); 1059 clear_bit(0, &clp->cl_cb_slot_busy);
983 rpc_init_wait_queue(&clp->cl_cb_waitq, "Backchannel slot table"); 1060 rpc_init_wait_queue(&clp->cl_cb_waitq, "Backchannel slot table");
@@ -986,7 +1063,7 @@ static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir,
986 clp->cl_flavor = rqstp->rq_flavor; 1063 clp->cl_flavor = rqstp->rq_flavor;
987 copy_cred(&clp->cl_cred, &rqstp->rq_cred); 1064 copy_cred(&clp->cl_cred, &rqstp->rq_cred);
988 gen_confirm(clp); 1065 gen_confirm(clp);
989 1066 clp->cl_cb_session = NULL;
990 return clp; 1067 return clp;
991} 1068}
992 1069
@@ -1098,7 +1175,7 @@ find_unconfirmed_client_by_str(const char *dname, unsigned int hashval,
1098static void 1175static void
1099gen_callback(struct nfs4_client *clp, struct nfsd4_setclientid *se, u32 scopeid) 1176gen_callback(struct nfs4_client *clp, struct nfsd4_setclientid *se, u32 scopeid)
1100{ 1177{
1101 struct nfs4_cb_conn *cb = &clp->cl_cb_conn; 1178 struct nfs4_cb_conn *conn = &clp->cl_cb_conn;
1102 unsigned short expected_family; 1179 unsigned short expected_family;
1103 1180
1104 /* Currently, we only support tcp and tcp6 for the callback channel */ 1181 /* Currently, we only support tcp and tcp6 for the callback channel */
@@ -1111,24 +1188,23 @@ gen_callback(struct nfs4_client *clp, struct nfsd4_setclientid *se, u32 scopeid)
1111 else 1188 else
1112 goto out_err; 1189 goto out_err;
1113 1190
1114 cb->cb_addrlen = rpc_uaddr2sockaddr(se->se_callback_addr_val, 1191 conn->cb_addrlen = rpc_uaddr2sockaddr(se->se_callback_addr_val,
1115 se->se_callback_addr_len, 1192 se->se_callback_addr_len,
1116 (struct sockaddr *) &cb->cb_addr, 1193 (struct sockaddr *)&conn->cb_addr,
1117 sizeof(cb->cb_addr)); 1194 sizeof(conn->cb_addr));
1118 1195
1119 if (!cb->cb_addrlen || cb->cb_addr.ss_family != expected_family) 1196 if (!conn->cb_addrlen || conn->cb_addr.ss_family != expected_family)
1120 goto out_err; 1197 goto out_err;
1121 1198
1122 if (cb->cb_addr.ss_family == AF_INET6) 1199 if (conn->cb_addr.ss_family == AF_INET6)
1123 ((struct sockaddr_in6 *) &cb->cb_addr)->sin6_scope_id = scopeid; 1200 ((struct sockaddr_in6 *)&conn->cb_addr)->sin6_scope_id = scopeid;
1124 1201
1125 cb->cb_minorversion = 0; 1202 conn->cb_prog = se->se_callback_prog;
1126 cb->cb_prog = se->se_callback_prog; 1203 conn->cb_ident = se->se_callback_ident;
1127 cb->cb_ident = se->se_callback_ident;
1128 return; 1204 return;
1129out_err: 1205out_err:
1130 cb->cb_addr.ss_family = AF_UNSPEC; 1206 conn->cb_addr.ss_family = AF_UNSPEC;
1131 cb->cb_addrlen = 0; 1207 conn->cb_addrlen = 0;
1132 dprintk(KERN_INFO "NFSD: this client (clientid %08x/%08x) " 1208 dprintk(KERN_INFO "NFSD: this client (clientid %08x/%08x) "
1133 "will not receive delegations\n", 1209 "will not receive delegations\n",
1134 clp->cl_clientid.cl_boot, clp->cl_clientid.cl_id); 1210 clp->cl_clientid.cl_boot, clp->cl_clientid.cl_id);
@@ -1415,7 +1491,9 @@ nfsd4_create_session(struct svc_rqst *rqstp,
1415{ 1491{
1416 struct sockaddr *sa = svc_addr(rqstp); 1492 struct sockaddr *sa = svc_addr(rqstp);
1417 struct nfs4_client *conf, *unconf; 1493 struct nfs4_client *conf, *unconf;
1494 struct nfsd4_session *new;
1418 struct nfsd4_clid_slot *cs_slot = NULL; 1495 struct nfsd4_clid_slot *cs_slot = NULL;
1496 bool confirm_me = false;
1419 int status = 0; 1497 int status = 0;
1420 1498
1421 nfs4_lock_state(); 1499 nfs4_lock_state();
@@ -1438,7 +1516,6 @@ nfsd4_create_session(struct svc_rqst *rqstp,
1438 cs_slot->sl_seqid, cr_ses->seqid); 1516 cs_slot->sl_seqid, cr_ses->seqid);
1439 goto out; 1517 goto out;
1440 } 1518 }
1441 cs_slot->sl_seqid++;
1442 } else if (unconf) { 1519 } else if (unconf) {
1443 if (!same_creds(&unconf->cl_cred, &rqstp->rq_cred) || 1520 if (!same_creds(&unconf->cl_cred, &rqstp->rq_cred) ||
1444 !rpc_cmp_addr(sa, (struct sockaddr *) &unconf->cl_addr)) { 1521 !rpc_cmp_addr(sa, (struct sockaddr *) &unconf->cl_addr)) {
@@ -1451,25 +1528,10 @@ nfsd4_create_session(struct svc_rqst *rqstp,
1451 if (status) { 1528 if (status) {
1452 /* an unconfirmed replay returns misordered */ 1529 /* an unconfirmed replay returns misordered */
1453 status = nfserr_seq_misordered; 1530 status = nfserr_seq_misordered;
1454 goto out_cache; 1531 goto out;
1455 } 1532 }
1456 1533
1457 cs_slot->sl_seqid++; /* from 0 to 1 */ 1534 confirm_me = true;
1458 move_to_confirmed(unconf);
1459
1460 if (cr_ses->flags & SESSION4_BACK_CHAN) {
1461 unconf->cl_cb_conn.cb_xprt = rqstp->rq_xprt;
1462 svc_xprt_get(rqstp->rq_xprt);
1463 rpc_copy_addr(
1464 (struct sockaddr *)&unconf->cl_cb_conn.cb_addr,
1465 sa);
1466 unconf->cl_cb_conn.cb_addrlen = svc_addr_len(sa);
1467 unconf->cl_cb_conn.cb_minorversion =
1468 cstate->minorversion;
1469 unconf->cl_cb_conn.cb_prog = cr_ses->callback_prog;
1470 unconf->cl_cb_seq_nr = 1;
1471 nfsd4_probe_callback(unconf, &unconf->cl_cb_conn);
1472 }
1473 conf = unconf; 1535 conf = unconf;
1474 } else { 1536 } else {
1475 status = nfserr_stale_clientid; 1537 status = nfserr_stale_clientid;
@@ -1477,22 +1539,30 @@ nfsd4_create_session(struct svc_rqst *rqstp,
1477 } 1539 }
1478 1540
1479 /* 1541 /*
1542 * XXX: we should probably set this at creation time, and check
1543 * for consistent minorversion use throughout:
1544 */
1545 conf->cl_minorversion = 1;
1546 /*
1480 * We do not support RDMA or persistent sessions 1547 * We do not support RDMA or persistent sessions
1481 */ 1548 */
1482 cr_ses->flags &= ~SESSION4_PERSIST; 1549 cr_ses->flags &= ~SESSION4_PERSIST;
1483 cr_ses->flags &= ~SESSION4_RDMA; 1550 cr_ses->flags &= ~SESSION4_RDMA;
1484 1551
1485 status = alloc_init_session(rqstp, conf, cr_ses); 1552 status = nfserr_jukebox;
1486 if (status) 1553 new = alloc_init_session(rqstp, conf, cr_ses);
1554 if (!new)
1487 goto out; 1555 goto out;
1488 1556 status = nfs_ok;
1489 memcpy(cr_ses->sessionid.data, conf->cl_sessionid.data, 1557 memcpy(cr_ses->sessionid.data, new->se_sessionid.data,
1490 NFS4_MAX_SESSIONID_LEN); 1558 NFS4_MAX_SESSIONID_LEN);
1559 cs_slot->sl_seqid++;
1491 cr_ses->seqid = cs_slot->sl_seqid; 1560 cr_ses->seqid = cs_slot->sl_seqid;
1492 1561
1493out_cache:
1494 /* cache solo and embedded create sessions under the state lock */ 1562 /* cache solo and embedded create sessions under the state lock */
1495 nfsd4_cache_create_session(cr_ses, cs_slot, status); 1563 nfsd4_cache_create_session(cr_ses, cs_slot, status);
1564 if (confirm_me)
1565 move_to_confirmed(conf);
1496out: 1566out:
1497 nfs4_unlock_state(); 1567 nfs4_unlock_state();
1498 dprintk("%s returns %d\n", __func__, ntohl(status)); 1568 dprintk("%s returns %d\n", __func__, ntohl(status));
@@ -1546,8 +1616,11 @@ nfsd4_destroy_session(struct svc_rqst *r,
1546 1616
1547 nfs4_lock_state(); 1617 nfs4_lock_state();
1548 /* wait for callbacks */ 1618 /* wait for callbacks */
1549 nfsd4_set_callback_client(ses->se_client, NULL); 1619 nfsd4_shutdown_callback(ses->se_client);
1550 nfs4_unlock_state(); 1620 nfs4_unlock_state();
1621
1622 nfsd4_del_conns(ses);
1623
1551 nfsd4_put_session(ses); 1624 nfsd4_put_session(ses);
1552 status = nfs_ok; 1625 status = nfs_ok;
1553out: 1626out:
@@ -1555,6 +1628,36 @@ out:
1555 return status; 1628 return status;
1556} 1629}
1557 1630
1631static struct nfsd4_conn *__nfsd4_find_conn(struct svc_xprt *xpt, struct nfsd4_session *s)
1632{
1633 struct nfsd4_conn *c;
1634
1635 list_for_each_entry(c, &s->se_conns, cn_persession) {
1636 if (c->cn_xprt == xpt) {
1637 return c;
1638 }
1639 }
1640 return NULL;
1641}
1642
1643static void nfsd4_sequence_check_conn(struct nfsd4_conn *new, struct nfsd4_session *ses)
1644{
1645 struct nfs4_client *clp = ses->se_client;
1646 struct nfsd4_conn *c;
1647
1648 spin_lock(&clp->cl_lock);
1649 c = __nfsd4_find_conn(new->cn_xprt, ses);
1650 if (c) {
1651 spin_unlock(&clp->cl_lock);
1652 free_conn(new);
1653 return;
1654 }
1655 __nfsd4_hash_conn(new, ses);
1656 spin_unlock(&clp->cl_lock);
1657 nfsd4_register_conn(new);
1658 return;
1659}
1660
1558__be32 1661__be32
1559nfsd4_sequence(struct svc_rqst *rqstp, 1662nfsd4_sequence(struct svc_rqst *rqstp,
1560 struct nfsd4_compound_state *cstate, 1663 struct nfsd4_compound_state *cstate,
@@ -1563,11 +1666,20 @@ nfsd4_sequence(struct svc_rqst *rqstp,
1563 struct nfsd4_compoundres *resp = rqstp->rq_resp; 1666 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1564 struct nfsd4_session *session; 1667 struct nfsd4_session *session;
1565 struct nfsd4_slot *slot; 1668 struct nfsd4_slot *slot;
1669 struct nfsd4_conn *conn;
1566 int status; 1670 int status;
1567 1671
1568 if (resp->opcnt != 1) 1672 if (resp->opcnt != 1)
1569 return nfserr_sequence_pos; 1673 return nfserr_sequence_pos;
1570 1674
1675 /*
1676 * Will be either used or freed by nfsd4_sequence_check_conn
1677 * below.
1678 */
1679 conn = alloc_conn(rqstp, NFS4_CDFC4_FORE);
1680 if (!conn)
1681 return nfserr_jukebox;
1682
1571 spin_lock(&client_lock); 1683 spin_lock(&client_lock);
1572 status = nfserr_badsession; 1684 status = nfserr_badsession;
1573 session = find_in_sessionid_hashtbl(&seq->sessionid); 1685 session = find_in_sessionid_hashtbl(&seq->sessionid);
@@ -1599,6 +1711,9 @@ nfsd4_sequence(struct svc_rqst *rqstp,
1599 if (status) 1711 if (status)
1600 goto out; 1712 goto out;
1601 1713
1714 nfsd4_sequence_check_conn(conn, session);
1715 conn = NULL;
1716
1602 /* Success! bump slot seqid */ 1717 /* Success! bump slot seqid */
1603 slot->sl_inuse = true; 1718 slot->sl_inuse = true;
1604 slot->sl_seqid = seq->seqid; 1719 slot->sl_seqid = seq->seqid;
@@ -1613,6 +1728,7 @@ out:
1613 nfsd4_get_session(cstate->session); 1728 nfsd4_get_session(cstate->session);
1614 atomic_inc(&session->se_client->cl_refcount); 1729 atomic_inc(&session->se_client->cl_refcount);
1615 } 1730 }
1731 kfree(conn);
1616 spin_unlock(&client_lock); 1732 spin_unlock(&client_lock);
1617 dprintk("%s: return %d\n", __func__, ntohl(status)); 1733 dprintk("%s: return %d\n", __func__, ntohl(status));
1618 return status; 1734 return status;
@@ -1747,6 +1863,11 @@ nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1747 goto out; 1863 goto out;
1748 gen_clid(new); 1864 gen_clid(new);
1749 } 1865 }
1866 /*
1867 * XXX: we should probably set this at creation time, and check
1868 * for consistent minorversion use throughout:
1869 */
1870 new->cl_minorversion = 0;
1750 gen_callback(new, setclid, rpc_get_scope_id(sa)); 1871 gen_callback(new, setclid, rpc_get_scope_id(sa));
1751 add_to_unconfirmed(new, strhashval); 1872 add_to_unconfirmed(new, strhashval);
1752 setclid->se_clientid.cl_boot = new->cl_clientid.cl_boot; 1873 setclid->se_clientid.cl_boot = new->cl_clientid.cl_boot;
@@ -1807,7 +1928,8 @@ nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
1807 status = nfserr_clid_inuse; 1928 status = nfserr_clid_inuse;
1808 else { 1929 else {
1809 atomic_set(&conf->cl_cb_set, 0); 1930 atomic_set(&conf->cl_cb_set, 0);
1810 nfsd4_probe_callback(conf, &unconf->cl_cb_conn); 1931 nfsd4_change_callback(conf, &unconf->cl_cb_conn);
1932 nfsd4_probe_callback(conf);
1811 expire_client(unconf); 1933 expire_client(unconf);
1812 status = nfs_ok; 1934 status = nfs_ok;
1813 1935
@@ -1841,7 +1963,7 @@ nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
1841 } 1963 }
1842 move_to_confirmed(unconf); 1964 move_to_confirmed(unconf);
1843 conf = unconf; 1965 conf = unconf;
1844 nfsd4_probe_callback(conf, &conf->cl_cb_conn); 1966 nfsd4_probe_callback(conf);
1845 status = nfs_ok; 1967 status = nfs_ok;
1846 } 1968 }
1847 } else if ((!conf || (conf && !same_verf(&conf->cl_confirm, &confirm))) 1969 } else if ((!conf || (conf && !same_verf(&conf->cl_confirm, &confirm)))
@@ -2944,7 +3066,11 @@ nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
2944 if (STALE_STATEID(stateid)) 3066 if (STALE_STATEID(stateid))
2945 goto out; 3067 goto out;
2946 3068
2947 status = nfserr_bad_stateid; 3069 /*
3070 * We assume that any stateid that has the current boot time,
3071 * but that we can't find, is expired:
3072 */
3073 status = nfserr_expired;
2948 if (is_delegation_stateid(stateid)) { 3074 if (is_delegation_stateid(stateid)) {
2949 dp = find_delegation_stateid(ino, stateid); 3075 dp = find_delegation_stateid(ino, stateid);
2950 if (!dp) 3076 if (!dp)
@@ -2964,6 +3090,7 @@ nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
2964 stp = find_stateid(stateid, flags); 3090 stp = find_stateid(stateid, flags);
2965 if (!stp) 3091 if (!stp)
2966 goto out; 3092 goto out;
3093 status = nfserr_bad_stateid;
2967 if (nfs4_check_fh(current_fh, stp)) 3094 if (nfs4_check_fh(current_fh, stp))
2968 goto out; 3095 goto out;
2969 if (!stp->st_stateowner->so_confirmed) 3096 if (!stp->st_stateowner->so_confirmed)
@@ -3038,8 +3165,9 @@ nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid,
3038 * a replayed close: 3165 * a replayed close:
3039 */ 3166 */
3040 sop = search_close_lru(stateid->si_stateownerid, flags); 3167 sop = search_close_lru(stateid->si_stateownerid, flags);
3168 /* It's not stale; let's assume it's expired: */
3041 if (sop == NULL) 3169 if (sop == NULL)
3042 return nfserr_bad_stateid; 3170 return nfserr_expired;
3043 *sopp = sop; 3171 *sopp = sop;
3044 goto check_replay; 3172 goto check_replay;
3045 } 3173 }
@@ -3304,6 +3432,7 @@ nfsd4_delegreturn(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
3304 status = nfserr_bad_stateid; 3432 status = nfserr_bad_stateid;
3305 if (!is_delegation_stateid(stateid)) 3433 if (!is_delegation_stateid(stateid))
3306 goto out; 3434 goto out;
3435 status = nfserr_expired;
3307 dp = find_delegation_stateid(inode, stateid); 3436 dp = find_delegation_stateid(inode, stateid);
3308 if (!dp) 3437 if (!dp)
3309 goto out; 3438 goto out;
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 1a468bbd330f..f35a94a04026 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -1805,19 +1805,23 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
1805 goto out_nfserr; 1805 goto out_nfserr;
1806 } 1806 }
1807 } 1807 }
1808 if ((buflen -= 16) < 0)
1809 goto out_resource;
1810 1808
1811 if (unlikely(bmval2)) { 1809 if (bmval2) {
1810 if ((buflen -= 16) < 0)
1811 goto out_resource;
1812 WRITE32(3); 1812 WRITE32(3);
1813 WRITE32(bmval0); 1813 WRITE32(bmval0);
1814 WRITE32(bmval1); 1814 WRITE32(bmval1);
1815 WRITE32(bmval2); 1815 WRITE32(bmval2);
1816 } else if (likely(bmval1)) { 1816 } else if (bmval1) {
1817 if ((buflen -= 12) < 0)
1818 goto out_resource;
1817 WRITE32(2); 1819 WRITE32(2);
1818 WRITE32(bmval0); 1820 WRITE32(bmval0);
1819 WRITE32(bmval1); 1821 WRITE32(bmval1);
1820 } else { 1822 } else {
1823 if ((buflen -= 8) < 0)
1824 goto out_resource;
1821 WRITE32(1); 1825 WRITE32(1);
1822 WRITE32(bmval0); 1826 WRITE32(bmval0);
1823 } 1827 }
@@ -1828,15 +1832,17 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
1828 u32 word1 = nfsd_suppattrs1(minorversion); 1832 u32 word1 = nfsd_suppattrs1(minorversion);
1829 u32 word2 = nfsd_suppattrs2(minorversion); 1833 u32 word2 = nfsd_suppattrs2(minorversion);
1830 1834
1831 if ((buflen -= 12) < 0)
1832 goto out_resource;
1833 if (!aclsupport) 1835 if (!aclsupport)
1834 word0 &= ~FATTR4_WORD0_ACL; 1836 word0 &= ~FATTR4_WORD0_ACL;
1835 if (!word2) { 1837 if (!word2) {
1838 if ((buflen -= 12) < 0)
1839 goto out_resource;
1836 WRITE32(2); 1840 WRITE32(2);
1837 WRITE32(word0); 1841 WRITE32(word0);
1838 WRITE32(word1); 1842 WRITE32(word1);
1839 } else { 1843 } else {
1844 if ((buflen -= 16) < 0)
1845 goto out_resource;
1840 WRITE32(3); 1846 WRITE32(3);
1841 WRITE32(word0); 1847 WRITE32(word0);
1842 WRITE32(word1); 1848 WRITE32(word1);
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 06fa87e52e82..d6dc3f61f8ba 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -22,6 +22,7 @@
22 */ 22 */
23enum { 23enum {
24 NFSD_Root = 1, 24 NFSD_Root = 1,
25#ifdef CONFIG_NFSD_DEPRECATED
25 NFSD_Svc, 26 NFSD_Svc,
26 NFSD_Add, 27 NFSD_Add,
27 NFSD_Del, 28 NFSD_Del,
@@ -29,6 +30,7 @@ enum {
29 NFSD_Unexport, 30 NFSD_Unexport,
30 NFSD_Getfd, 31 NFSD_Getfd,
31 NFSD_Getfs, 32 NFSD_Getfs,
33#endif
32 NFSD_List, 34 NFSD_List,
33 NFSD_Export_features, 35 NFSD_Export_features,
34 NFSD_Fh, 36 NFSD_Fh,
@@ -54,6 +56,7 @@ enum {
54/* 56/*
55 * write() for these nodes. 57 * write() for these nodes.
56 */ 58 */
59#ifdef CONFIG_NFSD_DEPRECATED
57static ssize_t write_svc(struct file *file, char *buf, size_t size); 60static ssize_t write_svc(struct file *file, char *buf, size_t size);
58static ssize_t write_add(struct file *file, char *buf, size_t size); 61static ssize_t write_add(struct file *file, char *buf, size_t size);
59static ssize_t write_del(struct file *file, char *buf, size_t size); 62static ssize_t write_del(struct file *file, char *buf, size_t size);
@@ -61,6 +64,7 @@ static ssize_t write_export(struct file *file, char *buf, size_t size);
61static ssize_t write_unexport(struct file *file, char *buf, size_t size); 64static ssize_t write_unexport(struct file *file, char *buf, size_t size);
62static ssize_t write_getfd(struct file *file, char *buf, size_t size); 65static ssize_t write_getfd(struct file *file, char *buf, size_t size);
63static ssize_t write_getfs(struct file *file, char *buf, size_t size); 66static ssize_t write_getfs(struct file *file, char *buf, size_t size);
67#endif
64static ssize_t write_filehandle(struct file *file, char *buf, size_t size); 68static ssize_t write_filehandle(struct file *file, char *buf, size_t size);
65static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size); 69static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size);
66static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size); 70static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size);
@@ -76,6 +80,7 @@ static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
76#endif 80#endif
77 81
78static ssize_t (*write_op[])(struct file *, char *, size_t) = { 82static ssize_t (*write_op[])(struct file *, char *, size_t) = {
83#ifdef CONFIG_NFSD_DEPRECATED
79 [NFSD_Svc] = write_svc, 84 [NFSD_Svc] = write_svc,
80 [NFSD_Add] = write_add, 85 [NFSD_Add] = write_add,
81 [NFSD_Del] = write_del, 86 [NFSD_Del] = write_del,
@@ -83,6 +88,7 @@ static ssize_t (*write_op[])(struct file *, char *, size_t) = {
83 [NFSD_Unexport] = write_unexport, 88 [NFSD_Unexport] = write_unexport,
84 [NFSD_Getfd] = write_getfd, 89 [NFSD_Getfd] = write_getfd,
85 [NFSD_Getfs] = write_getfs, 90 [NFSD_Getfs] = write_getfs,
91#endif
86 [NFSD_Fh] = write_filehandle, 92 [NFSD_Fh] = write_filehandle,
87 [NFSD_FO_UnlockIP] = write_unlock_ip, 93 [NFSD_FO_UnlockIP] = write_unlock_ip,
88 [NFSD_FO_UnlockFS] = write_unlock_fs, 94 [NFSD_FO_UnlockFS] = write_unlock_fs,
@@ -121,6 +127,14 @@ static ssize_t nfsctl_transaction_write(struct file *file, const char __user *bu
121 127
122static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos) 128static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos)
123{ 129{
130 static int warned;
131 if (file->f_dentry->d_name.name[0] == '.' && !warned) {
132 printk(KERN_INFO
133 "Warning: \"%s\" uses deprecated NFSD interface: %s."
134 " This will be removed in 2.6.40\n",
135 current->comm, file->f_dentry->d_name.name);
136 warned = 1;
137 }
124 if (! file->private_data) { 138 if (! file->private_data) {
125 /* An attempt to read a transaction file without writing 139 /* An attempt to read a transaction file without writing
126 * causes a 0-byte write so that the file can return 140 * causes a 0-byte write so that the file can return
@@ -187,6 +201,7 @@ static const struct file_operations pool_stats_operations = {
187 * payload - write methods 201 * payload - write methods
188 */ 202 */
189 203
204#ifdef CONFIG_NFSD_DEPRECATED
190/** 205/**
191 * write_svc - Start kernel's NFSD server 206 * write_svc - Start kernel's NFSD server
192 * 207 *
@@ -402,7 +417,7 @@ static ssize_t write_getfs(struct file *file, char *buf, size_t size)
402 417
403 ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6); 418 ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6);
404 419
405 clp = auth_unix_lookup(&in6); 420 clp = auth_unix_lookup(&init_net, &in6);
406 if (!clp) 421 if (!clp)
407 err = -EPERM; 422 err = -EPERM;
408 else { 423 else {
@@ -465,7 +480,7 @@ static ssize_t write_getfd(struct file *file, char *buf, size_t size)
465 480
466 ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6); 481 ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6);
467 482
468 clp = auth_unix_lookup(&in6); 483 clp = auth_unix_lookup(&init_net, &in6);
469 if (!clp) 484 if (!clp)
470 err = -EPERM; 485 err = -EPERM;
471 else { 486 else {
@@ -482,6 +497,7 @@ static ssize_t write_getfd(struct file *file, char *buf, size_t size)
482 out: 497 out:
483 return err; 498 return err;
484} 499}
500#endif /* CONFIG_NFSD_DEPRECATED */
485 501
486/** 502/**
487 * write_unlock_ip - Release all locks used by a client 503 * write_unlock_ip - Release all locks used by a client
@@ -1000,12 +1016,12 @@ static ssize_t __write_ports_addxprt(char *buf)
1000 if (err != 0) 1016 if (err != 0)
1001 return err; 1017 return err;
1002 1018
1003 err = svc_create_xprt(nfsd_serv, transport, 1019 err = svc_create_xprt(nfsd_serv, transport, &init_net,
1004 PF_INET, port, SVC_SOCK_ANONYMOUS); 1020 PF_INET, port, SVC_SOCK_ANONYMOUS);
1005 if (err < 0) 1021 if (err < 0)
1006 goto out_err; 1022 goto out_err;
1007 1023
1008 err = svc_create_xprt(nfsd_serv, transport, 1024 err = svc_create_xprt(nfsd_serv, transport, &init_net,
1009 PF_INET6, port, SVC_SOCK_ANONYMOUS); 1025 PF_INET6, port, SVC_SOCK_ANONYMOUS);
1010 if (err < 0 && err != -EAFNOSUPPORT) 1026 if (err < 0 && err != -EAFNOSUPPORT)
1011 goto out_close; 1027 goto out_close;
@@ -1356,6 +1372,7 @@ static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
1356static int nfsd_fill_super(struct super_block * sb, void * data, int silent) 1372static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
1357{ 1373{
1358 static struct tree_descr nfsd_files[] = { 1374 static struct tree_descr nfsd_files[] = {
1375#ifdef CONFIG_NFSD_DEPRECATED
1359 [NFSD_Svc] = {".svc", &transaction_ops, S_IWUSR}, 1376 [NFSD_Svc] = {".svc", &transaction_ops, S_IWUSR},
1360 [NFSD_Add] = {".add", &transaction_ops, S_IWUSR}, 1377 [NFSD_Add] = {".add", &transaction_ops, S_IWUSR},
1361 [NFSD_Del] = {".del", &transaction_ops, S_IWUSR}, 1378 [NFSD_Del] = {".del", &transaction_ops, S_IWUSR},
@@ -1363,6 +1380,7 @@ static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
1363 [NFSD_Unexport] = {".unexport", &transaction_ops, S_IWUSR}, 1380 [NFSD_Unexport] = {".unexport", &transaction_ops, S_IWUSR},
1364 [NFSD_Getfd] = {".getfd", &transaction_ops, S_IWUSR|S_IRUSR}, 1381 [NFSD_Getfd] = {".getfd", &transaction_ops, S_IWUSR|S_IRUSR},
1365 [NFSD_Getfs] = {".getfs", &transaction_ops, S_IWUSR|S_IRUSR}, 1382 [NFSD_Getfs] = {".getfs", &transaction_ops, S_IWUSR|S_IRUSR},
1383#endif
1366 [NFSD_List] = {"exports", &exports_operations, S_IRUGO}, 1384 [NFSD_List] = {"exports", &exports_operations, S_IRUGO},
1367 [NFSD_Export_features] = {"export_features", 1385 [NFSD_Export_features] = {"export_features",
1368 &export_features_operations, S_IRUGO}, 1386 &export_features_operations, S_IRUGO},
diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
index b76ac3a82e39..6b641cf2c19a 100644
--- a/fs/nfsd/nfsd.h
+++ b/fs/nfsd/nfsd.h
@@ -249,7 +249,7 @@ extern time_t nfsd4_grace;
249#define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */ 249#define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */
250#define COMPOUND_ERR_SLACK_SPACE 12 /* OP_SETATTR */ 250#define COMPOUND_ERR_SLACK_SPACE 12 /* OP_SETATTR */
251 251
252#define NFSD_LAUNDROMAT_MINTIMEOUT 10 /* seconds */ 252#define NFSD_LAUNDROMAT_MINTIMEOUT 1 /* seconds */
253 253
254/* 254/*
255 * The following attributes are currently not supported by the NFSv4 server: 255 * The following attributes are currently not supported by the NFSv4 server:
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index e2c43464f237..2bae1d86f5f2 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -16,6 +16,7 @@
16#include <linux/lockd/bind.h> 16#include <linux/lockd/bind.h>
17#include <linux/nfsacl.h> 17#include <linux/nfsacl.h>
18#include <linux/seq_file.h> 18#include <linux/seq_file.h>
19#include <net/net_namespace.h>
19#include "nfsd.h" 20#include "nfsd.h"
20#include "cache.h" 21#include "cache.h"
21#include "vfs.h" 22#include "vfs.h"
@@ -186,12 +187,12 @@ static int nfsd_init_socks(int port)
186 if (!list_empty(&nfsd_serv->sv_permsocks)) 187 if (!list_empty(&nfsd_serv->sv_permsocks))
187 return 0; 188 return 0;
188 189
189 error = svc_create_xprt(nfsd_serv, "udp", PF_INET, port, 190 error = svc_create_xprt(nfsd_serv, "udp", &init_net, PF_INET, port,
190 SVC_SOCK_DEFAULTS); 191 SVC_SOCK_DEFAULTS);
191 if (error < 0) 192 if (error < 0)
192 return error; 193 return error;
193 194
194 error = svc_create_xprt(nfsd_serv, "tcp", PF_INET, port, 195 error = svc_create_xprt(nfsd_serv, "tcp", &init_net, PF_INET, port,
195 SVC_SOCK_DEFAULTS); 196 SVC_SOCK_DEFAULTS);
196 if (error < 0) 197 if (error < 0)
197 return error; 198 return error;
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 322518c88e4b..39adc27b0685 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -35,6 +35,7 @@
35#ifndef _NFSD4_STATE_H 35#ifndef _NFSD4_STATE_H
36#define _NFSD4_STATE_H 36#define _NFSD4_STATE_H
37 37
38#include <linux/sunrpc/svc_xprt.h>
38#include <linux/nfsd/nfsfh.h> 39#include <linux/nfsd/nfsfh.h>
39#include "nfsfh.h" 40#include "nfsfh.h"
40 41
@@ -64,19 +65,12 @@ typedef struct {
64 (s)->si_fileid, \ 65 (s)->si_fileid, \
65 (s)->si_generation 66 (s)->si_generation
66 67
67struct nfsd4_cb_sequence {
68 /* args/res */
69 u32 cbs_minorversion;
70 struct nfs4_client *cbs_clp;
71};
72
73struct nfs4_rpc_args {
74 void *args_op;
75 struct nfsd4_cb_sequence args_seq;
76};
77
78struct nfsd4_callback { 68struct nfsd4_callback {
79 struct nfs4_rpc_args cb_args; 69 void *cb_op;
70 struct nfs4_client *cb_clp;
71 u32 cb_minorversion;
72 struct rpc_message cb_msg;
73 const struct rpc_call_ops *cb_ops;
80 struct work_struct cb_work; 74 struct work_struct cb_work;
81}; 75};
82 76
@@ -91,7 +85,6 @@ struct nfs4_delegation {
91 u32 dl_type; 85 u32 dl_type;
92 time_t dl_time; 86 time_t dl_time;
93/* For recall: */ 87/* For recall: */
94 u32 dl_ident;
95 stateid_t dl_stateid; 88 stateid_t dl_stateid;
96 struct knfsd_fh dl_fh; 89 struct knfsd_fh dl_fh;
97 int dl_retries; 90 int dl_retries;
@@ -103,8 +96,8 @@ struct nfs4_cb_conn {
103 /* SETCLIENTID info */ 96 /* SETCLIENTID info */
104 struct sockaddr_storage cb_addr; 97 struct sockaddr_storage cb_addr;
105 size_t cb_addrlen; 98 size_t cb_addrlen;
106 u32 cb_prog; 99 u32 cb_prog; /* used only in 4.0 case;
107 u32 cb_minorversion; 100 per-session otherwise */
108 u32 cb_ident; /* minorversion 0 only */ 101 u32 cb_ident; /* minorversion 0 only */
109 struct svc_xprt *cb_xprt; /* minorversion 1 only */ 102 struct svc_xprt *cb_xprt; /* minorversion 1 only */
110}; 103};
@@ -160,6 +153,15 @@ struct nfsd4_clid_slot {
160 struct nfsd4_create_session sl_cr_ses; 153 struct nfsd4_create_session sl_cr_ses;
161}; 154};
162 155
156struct nfsd4_conn {
157 struct list_head cn_persession;
158 struct svc_xprt *cn_xprt;
159 struct svc_xpt_user cn_xpt_user;
160 struct nfsd4_session *cn_session;
161/* CDFC4_FORE, CDFC4_BACK: */
162 unsigned char cn_flags;
163};
164
163struct nfsd4_session { 165struct nfsd4_session {
164 struct kref se_ref; 166 struct kref se_ref;
165 struct list_head se_hash; /* hash by sessionid */ 167 struct list_head se_hash; /* hash by sessionid */
@@ -169,6 +171,9 @@ struct nfsd4_session {
169 struct nfs4_sessionid se_sessionid; 171 struct nfs4_sessionid se_sessionid;
170 struct nfsd4_channel_attrs se_fchannel; 172 struct nfsd4_channel_attrs se_fchannel;
171 struct nfsd4_channel_attrs se_bchannel; 173 struct nfsd4_channel_attrs se_bchannel;
174 struct list_head se_conns;
175 u32 se_cb_prog;
176 u32 se_cb_seq_nr;
172 struct nfsd4_slot *se_slots[]; /* forward channel slots */ 177 struct nfsd4_slot *se_slots[]; /* forward channel slots */
173}; 178};
174 179
@@ -221,24 +226,32 @@ struct nfs4_client {
221 clientid_t cl_clientid; /* generated by server */ 226 clientid_t cl_clientid; /* generated by server */
222 nfs4_verifier cl_confirm; /* generated by server */ 227 nfs4_verifier cl_confirm; /* generated by server */
223 u32 cl_firststate; /* recovery dir creation */ 228 u32 cl_firststate; /* recovery dir creation */
229 u32 cl_minorversion;
224 230
225 /* for v4.0 and v4.1 callbacks: */ 231 /* for v4.0 and v4.1 callbacks: */
226 struct nfs4_cb_conn cl_cb_conn; 232 struct nfs4_cb_conn cl_cb_conn;
233#define NFSD4_CLIENT_CB_UPDATE 1
234#define NFSD4_CLIENT_KILL 2
235 unsigned long cl_cb_flags;
227 struct rpc_clnt *cl_cb_client; 236 struct rpc_clnt *cl_cb_client;
237 u32 cl_cb_ident;
228 atomic_t cl_cb_set; 238 atomic_t cl_cb_set;
239 struct nfsd4_callback cl_cb_null;
240 struct nfsd4_session *cl_cb_session;
241
242 /* for all client information that callback code might need: */
243 spinlock_t cl_lock;
229 244
230 /* for nfs41 */ 245 /* for nfs41 */
231 struct list_head cl_sessions; 246 struct list_head cl_sessions;
232 struct nfsd4_clid_slot cl_cs_slot; /* create_session slot */ 247 struct nfsd4_clid_slot cl_cs_slot; /* create_session slot */
233 u32 cl_exchange_flags; 248 u32 cl_exchange_flags;
234 struct nfs4_sessionid cl_sessionid;
235 /* number of rpc's in progress over an associated session: */ 249 /* number of rpc's in progress over an associated session: */
236 atomic_t cl_refcount; 250 atomic_t cl_refcount;
237 251
238 /* for nfs41 callbacks */ 252 /* for nfs41 callbacks */
239 /* We currently support a single back channel with a single slot */ 253 /* We currently support a single back channel with a single slot */
240 unsigned long cl_cb_slot_busy; 254 unsigned long cl_cb_slot_busy;
241 u32 cl_cb_seq_nr;
242 struct rpc_wait_queue cl_cb_waitq; /* backchannel callers may */ 255 struct rpc_wait_queue cl_cb_waitq; /* backchannel callers may */
243 /* wait here for slots */ 256 /* wait here for slots */
244}; 257};
@@ -440,12 +453,13 @@ extern int nfs4_in_grace(void);
440extern __be32 nfs4_check_open_reclaim(clientid_t *clid); 453extern __be32 nfs4_check_open_reclaim(clientid_t *clid);
441extern void nfs4_free_stateowner(struct kref *kref); 454extern void nfs4_free_stateowner(struct kref *kref);
442extern int set_callback_cred(void); 455extern int set_callback_cred(void);
443extern void nfsd4_probe_callback(struct nfs4_client *clp, struct nfs4_cb_conn *); 456extern void nfsd4_probe_callback(struct nfs4_client *clp);
457extern void nfsd4_change_callback(struct nfs4_client *clp, struct nfs4_cb_conn *);
444extern void nfsd4_do_callback_rpc(struct work_struct *); 458extern void nfsd4_do_callback_rpc(struct work_struct *);
445extern void nfsd4_cb_recall(struct nfs4_delegation *dp); 459extern void nfsd4_cb_recall(struct nfs4_delegation *dp);
446extern int nfsd4_create_callback_queue(void); 460extern int nfsd4_create_callback_queue(void);
447extern void nfsd4_destroy_callback_queue(void); 461extern void nfsd4_destroy_callback_queue(void);
448extern void nfsd4_set_callback_client(struct nfs4_client *, struct rpc_clnt *); 462extern void nfsd4_shutdown_callback(struct nfs4_client *);
449extern void nfs4_put_delegation(struct nfs4_delegation *dp); 463extern void nfs4_put_delegation(struct nfs4_delegation *dp);
450extern __be32 nfs4_make_rec_clidname(char *clidname, struct xdr_netobj *clname); 464extern __be32 nfs4_make_rec_clidname(char *clidname, struct xdr_netobj *clname);
451extern void nfsd4_init_recdir(char *recdir_name); 465extern void nfsd4_init_recdir(char *recdir_name);
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-09 13:20:43 -0400