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-rw-r--r--net/sunrpc/auth.c28
-rw-r--r--net/sunrpc/auth_gss/auth_gss.c44
-rw-r--r--net/sunrpc/bc_svc.c2
-rw-r--r--net/sunrpc/clnt.c21
-rw-r--r--net/sunrpc/rpc_pipe.c2
-rw-r--r--net/sunrpc/rpcb_clnt.c147
-rw-r--r--net/sunrpc/svc.c36
-rw-r--r--net/sunrpc/svcsock.c106
-rw-r--r--net/sunrpc/xdr.c155
9 files changed, 345 insertions, 196 deletions
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index afe67849269f..67e31276682a 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -563,8 +563,17 @@ rpcauth_checkverf(struct rpc_task *task, __be32 *p)
563 return cred->cr_ops->crvalidate(task, p); 563 return cred->cr_ops->crvalidate(task, p);
564} 564}
565 565
566static void rpcauth_wrap_req_encode(kxdreproc_t encode, struct rpc_rqst *rqstp,
567 __be32 *data, void *obj)
568{
569 struct xdr_stream xdr;
570
571 xdr_init_encode(&xdr, &rqstp->rq_snd_buf, data);
572 encode(rqstp, &xdr, obj);
573}
574
566int 575int
567rpcauth_wrap_req(struct rpc_task *task, kxdrproc_t encode, void *rqstp, 576rpcauth_wrap_req(struct rpc_task *task, kxdreproc_t encode, void *rqstp,
568 __be32 *data, void *obj) 577 __be32 *data, void *obj)
569{ 578{
570 struct rpc_cred *cred = task->tk_rqstp->rq_cred; 579 struct rpc_cred *cred = task->tk_rqstp->rq_cred;
@@ -574,11 +583,22 @@ rpcauth_wrap_req(struct rpc_task *task, kxdrproc_t encode, void *rqstp,
574 if (cred->cr_ops->crwrap_req) 583 if (cred->cr_ops->crwrap_req)
575 return cred->cr_ops->crwrap_req(task, encode, rqstp, data, obj); 584 return cred->cr_ops->crwrap_req(task, encode, rqstp, data, obj);
576 /* By default, we encode the arguments normally. */ 585 /* By default, we encode the arguments normally. */
577 return encode(rqstp, data, obj); 586 rpcauth_wrap_req_encode(encode, rqstp, data, obj);
587 return 0;
588}
589
590static int
591rpcauth_unwrap_req_decode(kxdrdproc_t decode, struct rpc_rqst *rqstp,
592 __be32 *data, void *obj)
593{
594 struct xdr_stream xdr;
595
596 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, data);
597 return decode(rqstp, &xdr, obj);
578} 598}
579 599
580int 600int
581rpcauth_unwrap_resp(struct rpc_task *task, kxdrproc_t decode, void *rqstp, 601rpcauth_unwrap_resp(struct rpc_task *task, kxdrdproc_t decode, void *rqstp,
582 __be32 *data, void *obj) 602 __be32 *data, void *obj)
583{ 603{
584 struct rpc_cred *cred = task->tk_rqstp->rq_cred; 604 struct rpc_cred *cred = task->tk_rqstp->rq_cred;
@@ -589,7 +609,7 @@ rpcauth_unwrap_resp(struct rpc_task *task, kxdrproc_t decode, void *rqstp,
589 return cred->cr_ops->crunwrap_resp(task, decode, rqstp, 609 return cred->cr_ops->crunwrap_resp(task, decode, rqstp,
590 data, obj); 610 data, obj);
591 /* By default, we decode the arguments normally. */ 611 /* By default, we decode the arguments normally. */
592 return decode(rqstp, data, obj); 612 return rpcauth_unwrap_req_decode(decode, rqstp, data, obj);
593} 613}
594 614
595int 615int
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index 3835ce35e224..45dbf1521b9a 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -1231,9 +1231,19 @@ out_bad:
1231 return NULL; 1231 return NULL;
1232} 1232}
1233 1233
1234static void gss_wrap_req_encode(kxdreproc_t encode, struct rpc_rqst *rqstp,
1235 __be32 *p, void *obj)
1236{
1237 struct xdr_stream xdr;
1238
1239 xdr_init_encode(&xdr, &rqstp->rq_snd_buf, p);
1240 encode(rqstp, &xdr, obj);
1241}
1242
1234static inline int 1243static inline int
1235gss_wrap_req_integ(struct rpc_cred *cred, struct gss_cl_ctx *ctx, 1244gss_wrap_req_integ(struct rpc_cred *cred, struct gss_cl_ctx *ctx,
1236 kxdrproc_t encode, struct rpc_rqst *rqstp, __be32 *p, void *obj) 1245 kxdreproc_t encode, struct rpc_rqst *rqstp,
1246 __be32 *p, void *obj)
1237{ 1247{
1238 struct xdr_buf *snd_buf = &rqstp->rq_snd_buf; 1248 struct xdr_buf *snd_buf = &rqstp->rq_snd_buf;
1239 struct xdr_buf integ_buf; 1249 struct xdr_buf integ_buf;
@@ -1249,9 +1259,7 @@ gss_wrap_req_integ(struct rpc_cred *cred, struct gss_cl_ctx *ctx,
1249 offset = (u8 *)p - (u8 *)snd_buf->head[0].iov_base; 1259 offset = (u8 *)p - (u8 *)snd_buf->head[0].iov_base;
1250 *p++ = htonl(rqstp->rq_seqno); 1260 *p++ = htonl(rqstp->rq_seqno);
1251 1261
1252 status = encode(rqstp, p, obj); 1262 gss_wrap_req_encode(encode, rqstp, p, obj);
1253 if (status)
1254 return status;
1255 1263
1256 if (xdr_buf_subsegment(snd_buf, &integ_buf, 1264 if (xdr_buf_subsegment(snd_buf, &integ_buf,
1257 offset, snd_buf->len - offset)) 1265 offset, snd_buf->len - offset))
@@ -1325,7 +1333,8 @@ out:
1325 1333
1326static inline int 1334static inline int
1327gss_wrap_req_priv(struct rpc_cred *cred, struct gss_cl_ctx *ctx, 1335gss_wrap_req_priv(struct rpc_cred *cred, struct gss_cl_ctx *ctx,
1328 kxdrproc_t encode, struct rpc_rqst *rqstp, __be32 *p, void *obj) 1336 kxdreproc_t encode, struct rpc_rqst *rqstp,
1337 __be32 *p, void *obj)
1329{ 1338{
1330 struct xdr_buf *snd_buf = &rqstp->rq_snd_buf; 1339 struct xdr_buf *snd_buf = &rqstp->rq_snd_buf;
1331 u32 offset; 1340 u32 offset;
@@ -1342,9 +1351,7 @@ gss_wrap_req_priv(struct rpc_cred *cred, struct gss_cl_ctx *ctx,
1342 offset = (u8 *)p - (u8 *)snd_buf->head[0].iov_base; 1351 offset = (u8 *)p - (u8 *)snd_buf->head[0].iov_base;
1343 *p++ = htonl(rqstp->rq_seqno); 1352 *p++ = htonl(rqstp->rq_seqno);
1344 1353
1345 status = encode(rqstp, p, obj); 1354 gss_wrap_req_encode(encode, rqstp, p, obj);
1346 if (status)
1347 return status;
1348 1355
1349 status = alloc_enc_pages(rqstp); 1356 status = alloc_enc_pages(rqstp);
1350 if (status) 1357 if (status)
@@ -1394,7 +1401,7 @@ gss_wrap_req_priv(struct rpc_cred *cred, struct gss_cl_ctx *ctx,
1394 1401
1395static int 1402static int
1396gss_wrap_req(struct rpc_task *task, 1403gss_wrap_req(struct rpc_task *task,
1397 kxdrproc_t encode, void *rqstp, __be32 *p, void *obj) 1404 kxdreproc_t encode, void *rqstp, __be32 *p, void *obj)
1398{ 1405{
1399 struct rpc_cred *cred = task->tk_rqstp->rq_cred; 1406 struct rpc_cred *cred = task->tk_rqstp->rq_cred;
1400 struct gss_cred *gss_cred = container_of(cred, struct gss_cred, 1407 struct gss_cred *gss_cred = container_of(cred, struct gss_cred,
@@ -1407,12 +1414,14 @@ gss_wrap_req(struct rpc_task *task,
1407 /* The spec seems a little ambiguous here, but I think that not 1414 /* The spec seems a little ambiguous here, but I think that not
1408 * wrapping context destruction requests makes the most sense. 1415 * wrapping context destruction requests makes the most sense.
1409 */ 1416 */
1410 status = encode(rqstp, p, obj); 1417 gss_wrap_req_encode(encode, rqstp, p, obj);
1418 status = 0;
1411 goto out; 1419 goto out;
1412 } 1420 }
1413 switch (gss_cred->gc_service) { 1421 switch (gss_cred->gc_service) {
1414 case RPC_GSS_SVC_NONE: 1422 case RPC_GSS_SVC_NONE:
1415 status = encode(rqstp, p, obj); 1423 gss_wrap_req_encode(encode, rqstp, p, obj);
1424 status = 0;
1416 break; 1425 break;
1417 case RPC_GSS_SVC_INTEGRITY: 1426 case RPC_GSS_SVC_INTEGRITY:
1418 status = gss_wrap_req_integ(cred, ctx, encode, 1427 status = gss_wrap_req_integ(cred, ctx, encode,
@@ -1494,10 +1503,19 @@ gss_unwrap_resp_priv(struct rpc_cred *cred, struct gss_cl_ctx *ctx,
1494 return 0; 1503 return 0;
1495} 1504}
1496 1505
1506static int
1507gss_unwrap_req_decode(kxdrdproc_t decode, struct rpc_rqst *rqstp,
1508 __be32 *p, void *obj)
1509{
1510 struct xdr_stream xdr;
1511
1512 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
1513 return decode(rqstp, &xdr, obj);
1514}
1497 1515
1498static int 1516static int
1499gss_unwrap_resp(struct rpc_task *task, 1517gss_unwrap_resp(struct rpc_task *task,
1500 kxdrproc_t decode, void *rqstp, __be32 *p, void *obj) 1518 kxdrdproc_t decode, void *rqstp, __be32 *p, void *obj)
1501{ 1519{
1502 struct rpc_cred *cred = task->tk_rqstp->rq_cred; 1520 struct rpc_cred *cred = task->tk_rqstp->rq_cred;
1503 struct gss_cred *gss_cred = container_of(cred, struct gss_cred, 1521 struct gss_cred *gss_cred = container_of(cred, struct gss_cred,
@@ -1528,7 +1546,7 @@ gss_unwrap_resp(struct rpc_task *task,
1528 cred->cr_auth->au_rslack = cred->cr_auth->au_verfsize + (p - savedp) 1546 cred->cr_auth->au_rslack = cred->cr_auth->au_verfsize + (p - savedp)
1529 + (savedlen - head->iov_len); 1547 + (savedlen - head->iov_len);
1530out_decode: 1548out_decode:
1531 status = decode(rqstp, p, obj); 1549 status = gss_unwrap_req_decode(decode, rqstp, p, obj);
1532out: 1550out:
1533 gss_put_ctx(ctx); 1551 gss_put_ctx(ctx);
1534 dprintk("RPC: %5u gss_unwrap_resp returning %d\n", task->tk_pid, 1552 dprintk("RPC: %5u gss_unwrap_resp returning %d\n", task->tk_pid,
diff --git a/net/sunrpc/bc_svc.c b/net/sunrpc/bc_svc.c
index 7dcfe0cc3500..1dd1a6890007 100644
--- a/net/sunrpc/bc_svc.c
+++ b/net/sunrpc/bc_svc.c
@@ -59,8 +59,8 @@ int bc_send(struct rpc_rqst *req)
59 ret = task->tk_status; 59 ret = task->tk_status;
60 rpc_put_task(task); 60 rpc_put_task(task);
61 } 61 }
62 return ret;
63 dprintk("RPC: bc_send ret= %d\n", ret); 62 dprintk("RPC: bc_send ret= %d\n", ret);
63 return ret;
64} 64}
65 65
66#endif /* CONFIG_NFS_V4_1 */ 66#endif /* CONFIG_NFS_V4_1 */
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 92ce94f5146b..57d344cf2256 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1095,7 +1095,7 @@ static void
1095rpc_xdr_encode(struct rpc_task *task) 1095rpc_xdr_encode(struct rpc_task *task)
1096{ 1096{
1097 struct rpc_rqst *req = task->tk_rqstp; 1097 struct rpc_rqst *req = task->tk_rqstp;
1098 kxdrproc_t encode; 1098 kxdreproc_t encode;
1099 __be32 *p; 1099 __be32 *p;
1100 1100
1101 dprint_status(task); 1101 dprint_status(task);
@@ -1535,7 +1535,7 @@ call_decode(struct rpc_task *task)
1535{ 1535{
1536 struct rpc_clnt *clnt = task->tk_client; 1536 struct rpc_clnt *clnt = task->tk_client;
1537 struct rpc_rqst *req = task->tk_rqstp; 1537 struct rpc_rqst *req = task->tk_rqstp;
1538 kxdrproc_t decode = task->tk_msg.rpc_proc->p_decode; 1538 kxdrdproc_t decode = task->tk_msg.rpc_proc->p_decode;
1539 __be32 *p; 1539 __be32 *p;
1540 1540
1541 dprintk("RPC: %5u call_decode (status %d)\n", 1541 dprintk("RPC: %5u call_decode (status %d)\n",
@@ -1776,12 +1776,11 @@ out_overflow:
1776 goto out_garbage; 1776 goto out_garbage;
1777} 1777}
1778 1778
1779static int rpcproc_encode_null(void *rqstp, __be32 *data, void *obj) 1779static void rpcproc_encode_null(void *rqstp, struct xdr_stream *xdr, void *obj)
1780{ 1780{
1781 return 0;
1782} 1781}
1783 1782
1784static int rpcproc_decode_null(void *rqstp, __be32 *data, void *obj) 1783static int rpcproc_decode_null(void *rqstp, struct xdr_stream *xdr, void *obj)
1785{ 1784{
1786 return 0; 1785 return 0;
1787} 1786}
@@ -1830,23 +1829,15 @@ static void rpc_show_task(const struct rpc_clnt *clnt,
1830 const struct rpc_task *task) 1829 const struct rpc_task *task)
1831{ 1830{
1832 const char *rpc_waitq = "none"; 1831 const char *rpc_waitq = "none";
1833 char *p, action[KSYM_SYMBOL_LEN];
1834 1832
1835 if (RPC_IS_QUEUED(task)) 1833 if (RPC_IS_QUEUED(task))
1836 rpc_waitq = rpc_qname(task->tk_waitqueue); 1834 rpc_waitq = rpc_qname(task->tk_waitqueue);
1837 1835
1838 /* map tk_action pointer to a function name; then trim off 1836 printk(KERN_INFO "%5u %04x %6d %8p %8p %8ld %8p %sv%u %s a:%ps q:%s\n",
1839 * the "+0x0 [sunrpc]" */
1840 sprint_symbol(action, (unsigned long)task->tk_action);
1841 p = strchr(action, '+');
1842 if (p)
1843 *p = '\0';
1844
1845 printk(KERN_INFO "%5u %04x %6d %8p %8p %8ld %8p %sv%u %s a:%s q:%s\n",
1846 task->tk_pid, task->tk_flags, task->tk_status, 1837 task->tk_pid, task->tk_flags, task->tk_status,
1847 clnt, task->tk_rqstp, task->tk_timeout, task->tk_ops, 1838 clnt, task->tk_rqstp, task->tk_timeout, task->tk_ops,
1848 clnt->cl_protname, clnt->cl_vers, rpc_proc_name(task), 1839 clnt->cl_protname, clnt->cl_vers, rpc_proc_name(task),
1849 action, rpc_waitq); 1840 task->tk_action, rpc_waitq);
1850} 1841}
1851 1842
1852void rpc_show_tasks(void) 1843void rpc_show_tasks(void)
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index 09f01f41e55a..72bc53683965 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -474,7 +474,7 @@ static int __rpc_create_common(struct inode *dir, struct dentry *dentry,
474{ 474{
475 struct inode *inode; 475 struct inode *inode;
476 476
477 BUG_ON(!d_unhashed(dentry)); 477 d_drop(dentry);
478 inode = rpc_get_inode(dir->i_sb, mode); 478 inode = rpc_get_inode(dir->i_sb, mode);
479 if (!inode) 479 if (!inode)
480 goto out_err; 480 goto out_err;
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index fa6d7ca2c851..c652e4cc9fe9 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -57,10 +57,6 @@ enum {
57 RPCBPROC_GETSTAT, 57 RPCBPROC_GETSTAT,
58}; 58};
59 59
60#define RPCB_HIGHPROC_2 RPCBPROC_CALLIT
61#define RPCB_HIGHPROC_3 RPCBPROC_TADDR2UADDR
62#define RPCB_HIGHPROC_4 RPCBPROC_GETSTAT
63
64/* 60/*
65 * r_owner 61 * r_owner
66 * 62 *
@@ -693,46 +689,37 @@ static void rpcb_getport_done(struct rpc_task *child, void *data)
693 * XDR functions for rpcbind 689 * XDR functions for rpcbind
694 */ 690 */
695 691
696static int rpcb_enc_mapping(struct rpc_rqst *req, __be32 *p, 692static void rpcb_enc_mapping(struct rpc_rqst *req, struct xdr_stream *xdr,
697 const struct rpcbind_args *rpcb) 693 const struct rpcbind_args *rpcb)
698{ 694{
699 struct rpc_task *task = req->rq_task; 695 struct rpc_task *task = req->rq_task;
700 struct xdr_stream xdr; 696 __be32 *p;
701 697
702 dprintk("RPC: %5u encoding PMAP_%s call (%u, %u, %d, %u)\n", 698 dprintk("RPC: %5u encoding PMAP_%s call (%u, %u, %d, %u)\n",
703 task->tk_pid, task->tk_msg.rpc_proc->p_name, 699 task->tk_pid, task->tk_msg.rpc_proc->p_name,
704 rpcb->r_prog, rpcb->r_vers, rpcb->r_prot, rpcb->r_port); 700 rpcb->r_prog, rpcb->r_vers, rpcb->r_prot, rpcb->r_port);
705 701
706 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 702 p = xdr_reserve_space(xdr, RPCB_mappingargs_sz << 2);
707 703 *p++ = cpu_to_be32(rpcb->r_prog);
708 p = xdr_reserve_space(&xdr, sizeof(__be32) * RPCB_mappingargs_sz); 704 *p++ = cpu_to_be32(rpcb->r_vers);
709 if (unlikely(p == NULL)) 705 *p++ = cpu_to_be32(rpcb->r_prot);
710 return -EIO; 706 *p = cpu_to_be32(rpcb->r_port);
711
712 *p++ = htonl(rpcb->r_prog);
713 *p++ = htonl(rpcb->r_vers);
714 *p++ = htonl(rpcb->r_prot);
715 *p = htonl(rpcb->r_port);
716
717 return 0;
718} 707}
719 708
720static int rpcb_dec_getport(struct rpc_rqst *req, __be32 *p, 709static int rpcb_dec_getport(struct rpc_rqst *req, struct xdr_stream *xdr,
721 struct rpcbind_args *rpcb) 710 struct rpcbind_args *rpcb)
722{ 711{
723 struct rpc_task *task = req->rq_task; 712 struct rpc_task *task = req->rq_task;
724 struct xdr_stream xdr;
725 unsigned long port; 713 unsigned long port;
726 714 __be32 *p;
727 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
728 715
729 rpcb->r_port = 0; 716 rpcb->r_port = 0;
730 717
731 p = xdr_inline_decode(&xdr, sizeof(__be32)); 718 p = xdr_inline_decode(xdr, 4);
732 if (unlikely(p == NULL)) 719 if (unlikely(p == NULL))
733 return -EIO; 720 return -EIO;
734 721
735 port = ntohl(*p); 722 port = be32_to_cpup(p);
736 dprintk("RPC: %5u PMAP_%s result: %lu\n", task->tk_pid, 723 dprintk("RPC: %5u PMAP_%s result: %lu\n", task->tk_pid,
737 task->tk_msg.rpc_proc->p_name, port); 724 task->tk_msg.rpc_proc->p_name, port);
738 if (unlikely(port > USHRT_MAX)) 725 if (unlikely(port > USHRT_MAX))
@@ -742,20 +729,18 @@ static int rpcb_dec_getport(struct rpc_rqst *req, __be32 *p,
742 return 0; 729 return 0;
743} 730}
744 731
745static int rpcb_dec_set(struct rpc_rqst *req, __be32 *p, 732static int rpcb_dec_set(struct rpc_rqst *req, struct xdr_stream *xdr,
746 unsigned int *boolp) 733 unsigned int *boolp)
747{ 734{
748 struct rpc_task *task = req->rq_task; 735 struct rpc_task *task = req->rq_task;
749 struct xdr_stream xdr; 736 __be32 *p;
750
751 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
752 737
753 p = xdr_inline_decode(&xdr, sizeof(__be32)); 738 p = xdr_inline_decode(xdr, 4);
754 if (unlikely(p == NULL)) 739 if (unlikely(p == NULL))
755 return -EIO; 740 return -EIO;
756 741
757 *boolp = 0; 742 *boolp = 0;
758 if (*p) 743 if (*p != xdr_zero)
759 *boolp = 1; 744 *boolp = 1;
760 745
761 dprintk("RPC: %5u RPCB_%s call %s\n", 746 dprintk("RPC: %5u RPCB_%s call %s\n",
@@ -764,73 +749,53 @@ static int rpcb_dec_set(struct rpc_rqst *req, __be32 *p,
764 return 0; 749 return 0;
765} 750}
766 751
767static int encode_rpcb_string(struct xdr_stream *xdr, const char *string, 752static void encode_rpcb_string(struct xdr_stream *xdr, const char *string,
768 const u32 maxstrlen) 753 const u32 maxstrlen)
769{ 754{
770 u32 len;
771 __be32 *p; 755 __be32 *p;
756 u32 len;
772 757
773 if (unlikely(string == NULL))
774 return -EIO;
775 len = strlen(string); 758 len = strlen(string);
776 if (unlikely(len > maxstrlen)) 759 BUG_ON(len > maxstrlen);
777 return -EIO; 760 p = xdr_reserve_space(xdr, 4 + len);
778
779 p = xdr_reserve_space(xdr, sizeof(__be32) + len);
780 if (unlikely(p == NULL))
781 return -EIO;
782 xdr_encode_opaque(p, string, len); 761 xdr_encode_opaque(p, string, len);
783
784 return 0;
785} 762}
786 763
787static int rpcb_enc_getaddr(struct rpc_rqst *req, __be32 *p, 764static void rpcb_enc_getaddr(struct rpc_rqst *req, struct xdr_stream *xdr,
788 const struct rpcbind_args *rpcb) 765 const struct rpcbind_args *rpcb)
789{ 766{
790 struct rpc_task *task = req->rq_task; 767 struct rpc_task *task = req->rq_task;
791 struct xdr_stream xdr; 768 __be32 *p;
792 769
793 dprintk("RPC: %5u encoding RPCB_%s call (%u, %u, '%s', '%s')\n", 770 dprintk("RPC: %5u encoding RPCB_%s call (%u, %u, '%s', '%s')\n",
794 task->tk_pid, task->tk_msg.rpc_proc->p_name, 771 task->tk_pid, task->tk_msg.rpc_proc->p_name,
795 rpcb->r_prog, rpcb->r_vers, 772 rpcb->r_prog, rpcb->r_vers,
796 rpcb->r_netid, rpcb->r_addr); 773 rpcb->r_netid, rpcb->r_addr);
797 774
798 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 775 p = xdr_reserve_space(xdr, (RPCB_program_sz + RPCB_version_sz) << 2);
799 776 *p++ = cpu_to_be32(rpcb->r_prog);
800 p = xdr_reserve_space(&xdr, 777 *p = cpu_to_be32(rpcb->r_vers);
801 sizeof(__be32) * (RPCB_program_sz + RPCB_version_sz));
802 if (unlikely(p == NULL))
803 return -EIO;
804 *p++ = htonl(rpcb->r_prog);
805 *p = htonl(rpcb->r_vers);
806
807 if (encode_rpcb_string(&xdr, rpcb->r_netid, RPCBIND_MAXNETIDLEN))
808 return -EIO;
809 if (encode_rpcb_string(&xdr, rpcb->r_addr, RPCBIND_MAXUADDRLEN))
810 return -EIO;
811 if (encode_rpcb_string(&xdr, rpcb->r_owner, RPCB_MAXOWNERLEN))
812 return -EIO;
813 778
814 return 0; 779 encode_rpcb_string(xdr, rpcb->r_netid, RPCBIND_MAXNETIDLEN);
780 encode_rpcb_string(xdr, rpcb->r_addr, RPCBIND_MAXUADDRLEN);
781 encode_rpcb_string(xdr, rpcb->r_owner, RPCB_MAXOWNERLEN);
815} 782}
816 783
817static int rpcb_dec_getaddr(struct rpc_rqst *req, __be32 *p, 784static int rpcb_dec_getaddr(struct rpc_rqst *req, struct xdr_stream *xdr,
818 struct rpcbind_args *rpcb) 785 struct rpcbind_args *rpcb)
819{ 786{
820 struct sockaddr_storage address; 787 struct sockaddr_storage address;
821 struct sockaddr *sap = (struct sockaddr *)&address; 788 struct sockaddr *sap = (struct sockaddr *)&address;
822 struct rpc_task *task = req->rq_task; 789 struct rpc_task *task = req->rq_task;
823 struct xdr_stream xdr; 790 __be32 *p;
824 u32 len; 791 u32 len;
825 792
826 rpcb->r_port = 0; 793 rpcb->r_port = 0;
827 794
828 xdr_init_decode(&xdr, &req->rq_rcv_buf, p); 795 p = xdr_inline_decode(xdr, 4);
829
830 p = xdr_inline_decode(&xdr, sizeof(__be32));
831 if (unlikely(p == NULL)) 796 if (unlikely(p == NULL))
832 goto out_fail; 797 goto out_fail;
833 len = ntohl(*p); 798 len = be32_to_cpup(p);
834 799
835 /* 800 /*
836 * If the returned universal address is a null string, 801 * If the returned universal address is a null string,
@@ -845,7 +810,7 @@ static int rpcb_dec_getaddr(struct rpc_rqst *req, __be32 *p,
845 if (unlikely(len > RPCBIND_MAXUADDRLEN)) 810 if (unlikely(len > RPCBIND_MAXUADDRLEN))
846 goto out_fail; 811 goto out_fail;
847 812
848 p = xdr_inline_decode(&xdr, len); 813 p = xdr_inline_decode(xdr, len);
849 if (unlikely(p == NULL)) 814 if (unlikely(p == NULL))
850 goto out_fail; 815 goto out_fail;
851 dprintk("RPC: %5u RPCB_%s reply: %s\n", task->tk_pid, 816 dprintk("RPC: %5u RPCB_%s reply: %s\n", task->tk_pid,
@@ -871,8 +836,8 @@ out_fail:
871static struct rpc_procinfo rpcb_procedures2[] = { 836static struct rpc_procinfo rpcb_procedures2[] = {
872 [RPCBPROC_SET] = { 837 [RPCBPROC_SET] = {
873 .p_proc = RPCBPROC_SET, 838 .p_proc = RPCBPROC_SET,
874 .p_encode = (kxdrproc_t)rpcb_enc_mapping, 839 .p_encode = (kxdreproc_t)rpcb_enc_mapping,
875 .p_decode = (kxdrproc_t)rpcb_dec_set, 840 .p_decode = (kxdrdproc_t)rpcb_dec_set,
876 .p_arglen = RPCB_mappingargs_sz, 841 .p_arglen = RPCB_mappingargs_sz,
877 .p_replen = RPCB_setres_sz, 842 .p_replen = RPCB_setres_sz,
878 .p_statidx = RPCBPROC_SET, 843 .p_statidx = RPCBPROC_SET,
@@ -881,8 +846,8 @@ static struct rpc_procinfo rpcb_procedures2[] = {
881 }, 846 },
882 [RPCBPROC_UNSET] = { 847 [RPCBPROC_UNSET] = {
883 .p_proc = RPCBPROC_UNSET, 848 .p_proc = RPCBPROC_UNSET,
884 .p_encode = (kxdrproc_t)rpcb_enc_mapping, 849 .p_encode = (kxdreproc_t)rpcb_enc_mapping,
885 .p_decode = (kxdrproc_t)rpcb_dec_set, 850 .p_decode = (kxdrdproc_t)rpcb_dec_set,
886 .p_arglen = RPCB_mappingargs_sz, 851 .p_arglen = RPCB_mappingargs_sz,
887 .p_replen = RPCB_setres_sz, 852 .p_replen = RPCB_setres_sz,
888 .p_statidx = RPCBPROC_UNSET, 853 .p_statidx = RPCBPROC_UNSET,
@@ -891,8 +856,8 @@ static struct rpc_procinfo rpcb_procedures2[] = {
891 }, 856 },
892 [RPCBPROC_GETPORT] = { 857 [RPCBPROC_GETPORT] = {
893 .p_proc = RPCBPROC_GETPORT, 858 .p_proc = RPCBPROC_GETPORT,
894 .p_encode = (kxdrproc_t)rpcb_enc_mapping, 859 .p_encode = (kxdreproc_t)rpcb_enc_mapping,
895 .p_decode = (kxdrproc_t)rpcb_dec_getport, 860 .p_decode = (kxdrdproc_t)rpcb_dec_getport,
896 .p_arglen = RPCB_mappingargs_sz, 861 .p_arglen = RPCB_mappingargs_sz,
897 .p_replen = RPCB_getportres_sz, 862 .p_replen = RPCB_getportres_sz,
898 .p_statidx = RPCBPROC_GETPORT, 863 .p_statidx = RPCBPROC_GETPORT,
@@ -904,8 +869,8 @@ static struct rpc_procinfo rpcb_procedures2[] = {
904static struct rpc_procinfo rpcb_procedures3[] = { 869static struct rpc_procinfo rpcb_procedures3[] = {
905 [RPCBPROC_SET] = { 870 [RPCBPROC_SET] = {
906 .p_proc = RPCBPROC_SET, 871 .p_proc = RPCBPROC_SET,
907 .p_encode = (kxdrproc_t)rpcb_enc_getaddr, 872 .p_encode = (kxdreproc_t)rpcb_enc_getaddr,
908 .p_decode = (kxdrproc_t)rpcb_dec_set, 873 .p_decode = (kxdrdproc_t)rpcb_dec_set,
909 .p_arglen = RPCB_getaddrargs_sz, 874 .p_arglen = RPCB_getaddrargs_sz,
910 .p_replen = RPCB_setres_sz, 875 .p_replen = RPCB_setres_sz,
911 .p_statidx = RPCBPROC_SET, 876 .p_statidx = RPCBPROC_SET,
@@ -914,8 +879,8 @@ static struct rpc_procinfo rpcb_procedures3[] = {
914 }, 879 },
915 [RPCBPROC_UNSET] = { 880 [RPCBPROC_UNSET] = {
916 .p_proc = RPCBPROC_UNSET, 881 .p_proc = RPCBPROC_UNSET,
917 .p_encode = (kxdrproc_t)rpcb_enc_getaddr, 882 .p_encode = (kxdreproc_t)rpcb_enc_getaddr,
918 .p_decode = (kxdrproc_t)rpcb_dec_set, 883 .p_decode = (kxdrdproc_t)rpcb_dec_set,
919 .p_arglen = RPCB_getaddrargs_sz, 884 .p_arglen = RPCB_getaddrargs_sz,
920 .p_replen = RPCB_setres_sz, 885 .p_replen = RPCB_setres_sz,
921 .p_statidx = RPCBPROC_UNSET, 886 .p_statidx = RPCBPROC_UNSET,
@@ -924,8 +889,8 @@ static struct rpc_procinfo rpcb_procedures3[] = {
924 }, 889 },
925 [RPCBPROC_GETADDR] = { 890 [RPCBPROC_GETADDR] = {
926 .p_proc = RPCBPROC_GETADDR, 891 .p_proc = RPCBPROC_GETADDR,
927 .p_encode = (kxdrproc_t)rpcb_enc_getaddr, 892 .p_encode = (kxdreproc_t)rpcb_enc_getaddr,
928 .p_decode = (kxdrproc_t)rpcb_dec_getaddr, 893 .p_decode = (kxdrdproc_t)rpcb_dec_getaddr,
929 .p_arglen = RPCB_getaddrargs_sz, 894 .p_arglen = RPCB_getaddrargs_sz,
930 .p_replen = RPCB_getaddrres_sz, 895 .p_replen = RPCB_getaddrres_sz,
931 .p_statidx = RPCBPROC_GETADDR, 896 .p_statidx = RPCBPROC_GETADDR,
@@ -937,8 +902,8 @@ static struct rpc_procinfo rpcb_procedures3[] = {
937static struct rpc_procinfo rpcb_procedures4[] = { 902static struct rpc_procinfo rpcb_procedures4[] = {
938 [RPCBPROC_SET] = { 903 [RPCBPROC_SET] = {
939 .p_proc = RPCBPROC_SET, 904 .p_proc = RPCBPROC_SET,
940 .p_encode = (kxdrproc_t)rpcb_enc_getaddr, 905 .p_encode = (kxdreproc_t)rpcb_enc_getaddr,
941 .p_decode = (kxdrproc_t)rpcb_dec_set, 906 .p_decode = (kxdrdproc_t)rpcb_dec_set,
942 .p_arglen = RPCB_getaddrargs_sz, 907 .p_arglen = RPCB_getaddrargs_sz,
943 .p_replen = RPCB_setres_sz, 908 .p_replen = RPCB_setres_sz,
944 .p_statidx = RPCBPROC_SET, 909 .p_statidx = RPCBPROC_SET,
@@ -947,8 +912,8 @@ static struct rpc_procinfo rpcb_procedures4[] = {
947 }, 912 },
948 [RPCBPROC_UNSET] = { 913 [RPCBPROC_UNSET] = {
949 .p_proc = RPCBPROC_UNSET, 914 .p_proc = RPCBPROC_UNSET,
950 .p_encode = (kxdrproc_t)rpcb_enc_getaddr, 915 .p_encode = (kxdreproc_t)rpcb_enc_getaddr,
951 .p_decode = (kxdrproc_t)rpcb_dec_set, 916 .p_decode = (kxdrdproc_t)rpcb_dec_set,
952 .p_arglen = RPCB_getaddrargs_sz, 917 .p_arglen = RPCB_getaddrargs_sz,
953 .p_replen = RPCB_setres_sz, 918 .p_replen = RPCB_setres_sz,
954 .p_statidx = RPCBPROC_UNSET, 919 .p_statidx = RPCBPROC_UNSET,
@@ -957,8 +922,8 @@ static struct rpc_procinfo rpcb_procedures4[] = {
957 }, 922 },
958 [RPCBPROC_GETADDR] = { 923 [RPCBPROC_GETADDR] = {
959 .p_proc = RPCBPROC_GETADDR, 924 .p_proc = RPCBPROC_GETADDR,
960 .p_encode = (kxdrproc_t)rpcb_enc_getaddr, 925 .p_encode = (kxdreproc_t)rpcb_enc_getaddr,
961 .p_decode = (kxdrproc_t)rpcb_dec_getaddr, 926 .p_decode = (kxdrdproc_t)rpcb_dec_getaddr,
962 .p_arglen = RPCB_getaddrargs_sz, 927 .p_arglen = RPCB_getaddrargs_sz,
963 .p_replen = RPCB_getaddrres_sz, 928 .p_replen = RPCB_getaddrres_sz,
964 .p_statidx = RPCBPROC_GETADDR, 929 .p_statidx = RPCBPROC_GETADDR,
@@ -993,19 +958,19 @@ static struct rpcb_info rpcb_next_version6[] = {
993 958
994static struct rpc_version rpcb_version2 = { 959static struct rpc_version rpcb_version2 = {
995 .number = RPCBVERS_2, 960 .number = RPCBVERS_2,
996 .nrprocs = RPCB_HIGHPROC_2, 961 .nrprocs = ARRAY_SIZE(rpcb_procedures2),
997 .procs = rpcb_procedures2 962 .procs = rpcb_procedures2
998}; 963};
999 964
1000static struct rpc_version rpcb_version3 = { 965static struct rpc_version rpcb_version3 = {
1001 .number = RPCBVERS_3, 966 .number = RPCBVERS_3,
1002 .nrprocs = RPCB_HIGHPROC_3, 967 .nrprocs = ARRAY_SIZE(rpcb_procedures3),
1003 .procs = rpcb_procedures3 968 .procs = rpcb_procedures3
1004}; 969};
1005 970
1006static struct rpc_version rpcb_version4 = { 971static struct rpc_version rpcb_version4 = {
1007 .number = RPCBVERS_4, 972 .number = RPCBVERS_4,
1008 .nrprocs = RPCB_HIGHPROC_4, 973 .nrprocs = ARRAY_SIZE(rpcb_procedures4),
1009 .procs = rpcb_procedures4 974 .procs = rpcb_procedures4
1010}; 975};
1011 976
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 6359c42c4941..0e659c665a8d 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -488,10 +488,6 @@ svc_destroy(struct svc_serv *serv)
488 if (svc_serv_is_pooled(serv)) 488 if (svc_serv_is_pooled(serv))
489 svc_pool_map_put(); 489 svc_pool_map_put();
490 490
491#if defined(CONFIG_NFS_V4_1)
492 svc_sock_destroy(serv->bc_xprt);
493#endif /* CONFIG_NFS_V4_1 */
494
495 svc_unregister(serv); 491 svc_unregister(serv);
496 kfree(serv->sv_pools); 492 kfree(serv->sv_pools);
497 kfree(serv); 493 kfree(serv);
@@ -1147,7 +1143,6 @@ svc_process_common(struct svc_rqst *rqstp, struct kvec *argv, struct kvec *resv)
1147 dropit: 1143 dropit:
1148 svc_authorise(rqstp); /* doesn't hurt to call this twice */ 1144 svc_authorise(rqstp); /* doesn't hurt to call this twice */
1149 dprintk("svc: svc_process dropit\n"); 1145 dprintk("svc: svc_process dropit\n");
1150 svc_drop(rqstp);
1151 return 0; 1146 return 0;
1152 1147
1153err_short_len: 1148err_short_len:
@@ -1218,7 +1213,6 @@ svc_process(struct svc_rqst *rqstp)
1218 struct kvec *resv = &rqstp->rq_res.head[0]; 1213 struct kvec *resv = &rqstp->rq_res.head[0];
1219 struct svc_serv *serv = rqstp->rq_server; 1214 struct svc_serv *serv = rqstp->rq_server;
1220 u32 dir; 1215 u32 dir;
1221 int error;
1222 1216
1223 /* 1217 /*
1224 * Setup response xdr_buf. 1218 * Setup response xdr_buf.
@@ -1246,11 +1240,13 @@ svc_process(struct svc_rqst *rqstp)
1246 return 0; 1240 return 0;
1247 } 1241 }
1248 1242
1249 error = svc_process_common(rqstp, argv, resv); 1243 /* Returns 1 for send, 0 for drop */
1250 if (error <= 0) 1244 if (svc_process_common(rqstp, argv, resv))
1251 return error; 1245 return svc_send(rqstp);
1252 1246 else {
1253 return svc_send(rqstp); 1247 svc_drop(rqstp);
1248 return 0;
1249 }
1254} 1250}
1255 1251
1256#if defined(CONFIG_NFS_V4_1) 1252#if defined(CONFIG_NFS_V4_1)
@@ -1264,10 +1260,9 @@ bc_svc_process(struct svc_serv *serv, struct rpc_rqst *req,
1264{ 1260{
1265 struct kvec *argv = &rqstp->rq_arg.head[0]; 1261 struct kvec *argv = &rqstp->rq_arg.head[0];
1266 struct kvec *resv = &rqstp->rq_res.head[0]; 1262 struct kvec *resv = &rqstp->rq_res.head[0];
1267 int error;
1268 1263
1269 /* Build the svc_rqst used by the common processing routine */ 1264 /* Build the svc_rqst used by the common processing routine */
1270 rqstp->rq_xprt = serv->bc_xprt; 1265 rqstp->rq_xprt = serv->sv_bc_xprt;
1271 rqstp->rq_xid = req->rq_xid; 1266 rqstp->rq_xid = req->rq_xid;
1272 rqstp->rq_prot = req->rq_xprt->prot; 1267 rqstp->rq_prot = req->rq_xprt->prot;
1273 rqstp->rq_server = serv; 1268 rqstp->rq_server = serv;
@@ -1292,12 +1287,15 @@ bc_svc_process(struct svc_serv *serv, struct rpc_rqst *req,
1292 svc_getu32(argv); /* XID */ 1287 svc_getu32(argv); /* XID */
1293 svc_getnl(argv); /* CALLDIR */ 1288 svc_getnl(argv); /* CALLDIR */
1294 1289
1295 error = svc_process_common(rqstp, argv, resv); 1290 /* Returns 1 for send, 0 for drop */
1296 if (error <= 0) 1291 if (svc_process_common(rqstp, argv, resv)) {
1297 return error; 1292 memcpy(&req->rq_snd_buf, &rqstp->rq_res,
1298 1293 sizeof(req->rq_snd_buf));
1299 memcpy(&req->rq_snd_buf, &rqstp->rq_res, sizeof(req->rq_snd_buf)); 1294 return bc_send(req);
1300 return bc_send(req); 1295 } else {
1296 /* Nothing to do to drop request */
1297 return 0;
1298 }
1301} 1299}
1302EXPORT_SYMBOL(bc_svc_process); 1300EXPORT_SYMBOL(bc_svc_process);
1303#endif /* CONFIG_NFS_V4_1 */ 1301#endif /* CONFIG_NFS_V4_1 */
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 07919e16be3e..d265aa700bb3 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -66,6 +66,13 @@ static void svc_sock_free(struct svc_xprt *);
66static struct svc_xprt *svc_create_socket(struct svc_serv *, int, 66static struct svc_xprt *svc_create_socket(struct svc_serv *, int,
67 struct net *, struct sockaddr *, 67 struct net *, struct sockaddr *,
68 int, int); 68 int, int);
69#if defined(CONFIG_NFS_V4_1)
70static struct svc_xprt *svc_bc_create_socket(struct svc_serv *, int,
71 struct net *, struct sockaddr *,
72 int, int);
73static void svc_bc_sock_free(struct svc_xprt *xprt);
74#endif /* CONFIG_NFS_V4_1 */
75
69#ifdef CONFIG_DEBUG_LOCK_ALLOC 76#ifdef CONFIG_DEBUG_LOCK_ALLOC
70static struct lock_class_key svc_key[2]; 77static struct lock_class_key svc_key[2];
71static struct lock_class_key svc_slock_key[2]; 78static struct lock_class_key svc_slock_key[2];
@@ -1184,6 +1191,57 @@ static struct svc_xprt *svc_tcp_create(struct svc_serv *serv,
1184 return svc_create_socket(serv, IPPROTO_TCP, net, sa, salen, flags); 1191 return svc_create_socket(serv, IPPROTO_TCP, net, sa, salen, flags);
1185} 1192}
1186 1193
1194#if defined(CONFIG_NFS_V4_1)
1195static struct svc_xprt *svc_bc_create_socket(struct svc_serv *, int,
1196 struct net *, struct sockaddr *,
1197 int, int);
1198static void svc_bc_sock_free(struct svc_xprt *xprt);
1199
1200static struct svc_xprt *svc_bc_tcp_create(struct svc_serv *serv,
1201 struct net *net,
1202 struct sockaddr *sa, int salen,
1203 int flags)
1204{
1205 return svc_bc_create_socket(serv, IPPROTO_TCP, net, sa, salen, flags);
1206}
1207
1208static void svc_bc_tcp_sock_detach(struct svc_xprt *xprt)
1209{
1210}
1211
1212static struct svc_xprt_ops svc_tcp_bc_ops = {
1213 .xpo_create = svc_bc_tcp_create,
1214 .xpo_detach = svc_bc_tcp_sock_detach,
1215 .xpo_free = svc_bc_sock_free,
1216 .xpo_prep_reply_hdr = svc_tcp_prep_reply_hdr,
1217};
1218
1219static struct svc_xprt_class svc_tcp_bc_class = {
1220 .xcl_name = "tcp-bc",
1221 .xcl_owner = THIS_MODULE,
1222 .xcl_ops = &svc_tcp_bc_ops,
1223 .xcl_max_payload = RPCSVC_MAXPAYLOAD_TCP,
1224};
1225
1226static void svc_init_bc_xprt_sock(void)
1227{
1228 svc_reg_xprt_class(&svc_tcp_bc_class);
1229}
1230
1231static void svc_cleanup_bc_xprt_sock(void)
1232{
1233 svc_unreg_xprt_class(&svc_tcp_bc_class);
1234}
1235#else /* CONFIG_NFS_V4_1 */
1236static void svc_init_bc_xprt_sock(void)
1237{
1238}
1239
1240static void svc_cleanup_bc_xprt_sock(void)
1241{
1242}
1243#endif /* CONFIG_NFS_V4_1 */
1244
1187static struct svc_xprt_ops svc_tcp_ops = { 1245static struct svc_xprt_ops svc_tcp_ops = {
1188 .xpo_create = svc_tcp_create, 1246 .xpo_create = svc_tcp_create,
1189 .xpo_recvfrom = svc_tcp_recvfrom, 1247 .xpo_recvfrom = svc_tcp_recvfrom,
@@ -1207,12 +1265,14 @@ void svc_init_xprt_sock(void)
1207{ 1265{
1208 svc_reg_xprt_class(&svc_tcp_class); 1266 svc_reg_xprt_class(&svc_tcp_class);
1209 svc_reg_xprt_class(&svc_udp_class); 1267 svc_reg_xprt_class(&svc_udp_class);
1268 svc_init_bc_xprt_sock();
1210} 1269}
1211 1270
1212void svc_cleanup_xprt_sock(void) 1271void svc_cleanup_xprt_sock(void)
1213{ 1272{
1214 svc_unreg_xprt_class(&svc_tcp_class); 1273 svc_unreg_xprt_class(&svc_tcp_class);
1215 svc_unreg_xprt_class(&svc_udp_class); 1274 svc_unreg_xprt_class(&svc_udp_class);
1275 svc_cleanup_bc_xprt_sock();
1216} 1276}
1217 1277
1218static void svc_tcp_init(struct svc_sock *svsk, struct svc_serv *serv) 1278static void svc_tcp_init(struct svc_sock *svsk, struct svc_serv *serv)
@@ -1509,41 +1569,45 @@ static void svc_sock_free(struct svc_xprt *xprt)
1509 kfree(svsk); 1569 kfree(svsk);
1510} 1570}
1511 1571
1572#if defined(CONFIG_NFS_V4_1)
1512/* 1573/*
1513 * Create a svc_xprt. 1574 * Create a back channel svc_xprt which shares the fore channel socket.
1514 *
1515 * For internal use only (e.g. nfsv4.1 backchannel).
1516 * Callers should typically use the xpo_create() method.
1517 */ 1575 */
1518struct svc_xprt *svc_sock_create(struct svc_serv *serv, int prot) 1576static struct svc_xprt *svc_bc_create_socket(struct svc_serv *serv,
1577 int protocol,
1578 struct net *net,
1579 struct sockaddr *sin, int len,
1580 int flags)
1519{ 1581{
1520 struct svc_sock *svsk; 1582 struct svc_sock *svsk;
1521 struct svc_xprt *xprt = NULL; 1583 struct svc_xprt *xprt;
1584
1585 if (protocol != IPPROTO_TCP) {
1586 printk(KERN_WARNING "svc: only TCP sockets"
1587 " supported on shared back channel\n");
1588 return ERR_PTR(-EINVAL);
1589 }
1522 1590
1523 dprintk("svc: %s\n", __func__);
1524 svsk = kzalloc(sizeof(*svsk), GFP_KERNEL); 1591 svsk = kzalloc(sizeof(*svsk), GFP_KERNEL);
1525 if (!svsk) 1592 if (!svsk)
1526 goto out; 1593 return ERR_PTR(-ENOMEM);
1527 1594
1528 xprt = &svsk->sk_xprt; 1595 xprt = &svsk->sk_xprt;
1529 if (prot == IPPROTO_TCP) 1596 svc_xprt_init(&svc_tcp_bc_class, xprt, serv);
1530 svc_xprt_init(&svc_tcp_class, xprt, serv); 1597
1531 else if (prot == IPPROTO_UDP) 1598 serv->sv_bc_xprt = xprt;
1532 svc_xprt_init(&svc_udp_class, xprt, serv); 1599
1533 else
1534 BUG();
1535out:
1536 dprintk("svc: %s return %p\n", __func__, xprt);
1537 return xprt; 1600 return xprt;
1538} 1601}
1539EXPORT_SYMBOL_GPL(svc_sock_create);
1540 1602
1541/* 1603/*
1542 * Destroy a svc_sock. 1604 * Free a back channel svc_sock.
1543 */ 1605 */
1544void svc_sock_destroy(struct svc_xprt *xprt) 1606static void svc_bc_sock_free(struct svc_xprt *xprt)
1545{ 1607{
1546 if (xprt) 1608 if (xprt) {
1609 kfree(xprt->xpt_bc_sid);
1547 kfree(container_of(xprt, struct svc_sock, sk_xprt)); 1610 kfree(container_of(xprt, struct svc_sock, sk_xprt));
1611 }
1548} 1612}
1549EXPORT_SYMBOL_GPL(svc_sock_destroy); 1613#endif /* CONFIG_NFS_V4_1 */
diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c
index cd9e841e7492..679cd674b81d 100644
--- a/net/sunrpc/xdr.c
+++ b/net/sunrpc/xdr.c
@@ -552,6 +552,74 @@ void xdr_write_pages(struct xdr_stream *xdr, struct page **pages, unsigned int b
552} 552}
553EXPORT_SYMBOL_GPL(xdr_write_pages); 553EXPORT_SYMBOL_GPL(xdr_write_pages);
554 554
555static void xdr_set_iov(struct xdr_stream *xdr, struct kvec *iov,
556 __be32 *p, unsigned int len)
557{
558 if (len > iov->iov_len)
559 len = iov->iov_len;
560 if (p == NULL)
561 p = (__be32*)iov->iov_base;
562 xdr->p = p;
563 xdr->end = (__be32*)(iov->iov_base + len);
564 xdr->iov = iov;
565 xdr->page_ptr = NULL;
566}
567
568static int xdr_set_page_base(struct xdr_stream *xdr,
569 unsigned int base, unsigned int len)
570{
571 unsigned int pgnr;
572 unsigned int maxlen;
573 unsigned int pgoff;
574 unsigned int pgend;
575 void *kaddr;
576
577 maxlen = xdr->buf->page_len;
578 if (base >= maxlen)
579 return -EINVAL;
580 maxlen -= base;
581 if (len > maxlen)
582 len = maxlen;
583
584 base += xdr->buf->page_base;
585
586 pgnr = base >> PAGE_SHIFT;
587 xdr->page_ptr = &xdr->buf->pages[pgnr];
588 kaddr = page_address(*xdr->page_ptr);
589
590 pgoff = base & ~PAGE_MASK;
591 xdr->p = (__be32*)(kaddr + pgoff);
592
593 pgend = pgoff + len;
594 if (pgend > PAGE_SIZE)
595 pgend = PAGE_SIZE;
596 xdr->end = (__be32*)(kaddr + pgend);
597 xdr->iov = NULL;
598 return 0;
599}
600
601static void xdr_set_next_page(struct xdr_stream *xdr)
602{
603 unsigned int newbase;
604
605 newbase = (1 + xdr->page_ptr - xdr->buf->pages) << PAGE_SHIFT;
606 newbase -= xdr->buf->page_base;
607
608 if (xdr_set_page_base(xdr, newbase, PAGE_SIZE) < 0)
609 xdr_set_iov(xdr, xdr->buf->tail, NULL, xdr->buf->len);
610}
611
612static bool xdr_set_next_buffer(struct xdr_stream *xdr)
613{
614 if (xdr->page_ptr != NULL)
615 xdr_set_next_page(xdr);
616 else if (xdr->iov == xdr->buf->head) {
617 if (xdr_set_page_base(xdr, 0, PAGE_SIZE) < 0)
618 xdr_set_iov(xdr, xdr->buf->tail, NULL, xdr->buf->len);
619 }
620 return xdr->p != xdr->end;
621}
622
555/** 623/**
556 * xdr_init_decode - Initialize an xdr_stream for decoding data. 624 * xdr_init_decode - Initialize an xdr_stream for decoding data.
557 * @xdr: pointer to xdr_stream struct 625 * @xdr: pointer to xdr_stream struct
@@ -560,41 +628,67 @@ EXPORT_SYMBOL_GPL(xdr_write_pages);
560 */ 628 */
561void xdr_init_decode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p) 629void xdr_init_decode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p)
562{ 630{
563 struct kvec *iov = buf->head;
564 unsigned int len = iov->iov_len;
565
566 if (len > buf->len)
567 len = buf->len;
568 xdr->buf = buf; 631 xdr->buf = buf;
569 xdr->iov = iov; 632 xdr->scratch.iov_base = NULL;
570 xdr->p = p; 633 xdr->scratch.iov_len = 0;
571 xdr->end = (__be32 *)((char *)iov->iov_base + len); 634 if (buf->head[0].iov_len != 0)
635 xdr_set_iov(xdr, buf->head, p, buf->len);
636 else if (buf->page_len != 0)
637 xdr_set_page_base(xdr, 0, buf->len);
572} 638}
573EXPORT_SYMBOL_GPL(xdr_init_decode); 639EXPORT_SYMBOL_GPL(xdr_init_decode);
574 640
575/** 641static __be32 * __xdr_inline_decode(struct xdr_stream *xdr, size_t nbytes)
576 * xdr_inline_peek - Allow read-ahead in the XDR data stream
577 * @xdr: pointer to xdr_stream struct
578 * @nbytes: number of bytes of data to decode
579 *
580 * Check if the input buffer is long enough to enable us to decode
581 * 'nbytes' more bytes of data starting at the current position.
582 * If so return the current pointer without updating the current
583 * pointer position.
584 */
585__be32 * xdr_inline_peek(struct xdr_stream *xdr, size_t nbytes)
586{ 642{
587 __be32 *p = xdr->p; 643 __be32 *p = xdr->p;
588 __be32 *q = p + XDR_QUADLEN(nbytes); 644 __be32 *q = p + XDR_QUADLEN(nbytes);
589 645
590 if (unlikely(q > xdr->end || q < p)) 646 if (unlikely(q > xdr->end || q < p))
591 return NULL; 647 return NULL;
648 xdr->p = q;
592 return p; 649 return p;
593} 650}
594EXPORT_SYMBOL_GPL(xdr_inline_peek);
595 651
596/** 652/**
597 * xdr_inline_decode - Retrieve non-page XDR data to decode 653 * xdr_set_scratch_buffer - Attach a scratch buffer for decoding data.
654 * @xdr: pointer to xdr_stream struct
655 * @buf: pointer to an empty buffer
656 * @buflen: size of 'buf'
657 *
658 * The scratch buffer is used when decoding from an array of pages.
659 * If an xdr_inline_decode() call spans across page boundaries, then
660 * we copy the data into the scratch buffer in order to allow linear
661 * access.
662 */
663void xdr_set_scratch_buffer(struct xdr_stream *xdr, void *buf, size_t buflen)
664{
665 xdr->scratch.iov_base = buf;
666 xdr->scratch.iov_len = buflen;
667}
668EXPORT_SYMBOL_GPL(xdr_set_scratch_buffer);
669
670static __be32 *xdr_copy_to_scratch(struct xdr_stream *xdr, size_t nbytes)
671{
672 __be32 *p;
673 void *cpdest = xdr->scratch.iov_base;
674 size_t cplen = (char *)xdr->end - (char *)xdr->p;
675
676 if (nbytes > xdr->scratch.iov_len)
677 return NULL;
678 memcpy(cpdest, xdr->p, cplen);
679 cpdest += cplen;
680 nbytes -= cplen;
681 if (!xdr_set_next_buffer(xdr))
682 return NULL;
683 p = __xdr_inline_decode(xdr, nbytes);
684 if (p == NULL)
685 return NULL;
686 memcpy(cpdest, p, nbytes);
687 return xdr->scratch.iov_base;
688}
689
690/**
691 * xdr_inline_decode - Retrieve XDR data to decode
598 * @xdr: pointer to xdr_stream struct 692 * @xdr: pointer to xdr_stream struct
599 * @nbytes: number of bytes of data to decode 693 * @nbytes: number of bytes of data to decode
600 * 694 *
@@ -605,13 +699,16 @@ EXPORT_SYMBOL_GPL(xdr_inline_peek);
605 */ 699 */
606__be32 * xdr_inline_decode(struct xdr_stream *xdr, size_t nbytes) 700__be32 * xdr_inline_decode(struct xdr_stream *xdr, size_t nbytes)
607{ 701{
608 __be32 *p = xdr->p; 702 __be32 *p;
609 __be32 *q = p + XDR_QUADLEN(nbytes);
610 703
611 if (unlikely(q > xdr->end || q < p)) 704 if (nbytes == 0)
705 return xdr->p;
706 if (xdr->p == xdr->end && !xdr_set_next_buffer(xdr))
612 return NULL; 707 return NULL;
613 xdr->p = q; 708 p = __xdr_inline_decode(xdr, nbytes);
614 return p; 709 if (p != NULL)
710 return p;
711 return xdr_copy_to_scratch(xdr, nbytes);
615} 712}
616EXPORT_SYMBOL_GPL(xdr_inline_decode); 713EXPORT_SYMBOL_GPL(xdr_inline_decode);
617 714
@@ -671,16 +768,12 @@ EXPORT_SYMBOL_GPL(xdr_read_pages);
671 */ 768 */
672void xdr_enter_page(struct xdr_stream *xdr, unsigned int len) 769void xdr_enter_page(struct xdr_stream *xdr, unsigned int len)
673{ 770{
674 char * kaddr = page_address(xdr->buf->pages[0]);
675 xdr_read_pages(xdr, len); 771 xdr_read_pages(xdr, len);
676 /* 772 /*
677 * Position current pointer at beginning of tail, and 773 * Position current pointer at beginning of tail, and
678 * set remaining message length. 774 * set remaining message length.
679 */ 775 */
680 if (len > PAGE_CACHE_SIZE - xdr->buf->page_base) 776 xdr_set_page_base(xdr, 0, len);
681 len = PAGE_CACHE_SIZE - xdr->buf->page_base;
682 xdr->p = (__be32 *)(kaddr + xdr->buf->page_base);
683 xdr->end = (__be32 *)((char *)xdr->p + len);
684} 777}
685EXPORT_SYMBOL_GPL(xdr_enter_page); 778EXPORT_SYMBOL_GPL(xdr_enter_page);
686 779
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-17 03:56:25 -0500