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

6 files changed, 24 insertions, 859 deletions

diff --git a/net/sunrpc/auth_gss/Makefile b/net/sunrpc/auth_gss/Makefile
index 74a2317..7350d86 100644
--- a/net/sunrpc/auth_gss/Makefile
+++ b/net/sunrpc/auth_gss/Makefile
@@ -11,8 +11,3 @@ obj-$(CONFIG_RPCSEC_GSS_KRB5) += rpcsec_gss_krb5.o
 
 rpcsec_gss_krb5-objs := gss_krb5_mech.o gss_krb5_seal.o gss_krb5_unseal.o \
 	gss_krb5_seqnum.o gss_krb5_wrap.o gss_krb5_crypto.o gss_krb5_keys.o
-
-obj-$(CONFIG_RPCSEC_GSS_SPKM3) += rpcsec_gss_spkm3.o
-
-rpcsec_gss_spkm3-objs := gss_spkm3_mech.o gss_spkm3_seal.o gss_spkm3_unseal.o \
-	gss_spkm3_token.o
diff --git a/net/sunrpc/auth_gss/gss_spkm3_mech.c b/net/sunrpc/auth_gss/gss_spkm3_mech.c
deleted file mode 100644
index adade3d..0000000
--- a/net/sunrpc/auth_gss/gss_spkm3_mech.c
+++ /dev/null
@@ -1,247 +0,0 @@
-/*
- *  linux/net/sunrpc/gss_spkm3_mech.c
- *
- *  Copyright (c) 2003 The Regents of the University of Michigan.
- *  All rights reserved.
- *
- *  Andy Adamson <andros@umich.edu>
- *  J. Bruce Fields <bfields@umich.edu>
- *
- *  Redistribution and use in source and binary forms, with or without
- *  modification, are permitted provided that the following conditions
- *  are met:
- *
- *  1. Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- *  2. Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution.
- *  3. Neither the name of the University nor the names of its
- *     contributors may be used to endorse or promote products derived
- *     from this software without specific prior written permission.
- *
- *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- *  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#include <linux/err.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/sunrpc/auth.h>
-#include <linux/in.h>
-#include <linux/sunrpc/svcauth_gss.h>
-#include <linux/sunrpc/gss_spkm3.h>
-#include <linux/sunrpc/xdr.h>
-#include <linux/crypto.h>
-
-#ifdef RPC_DEBUG
-# define RPCDBG_FACILITY	RPCDBG_AUTH
-#endif
-
-static const void *
-simple_get_bytes(const void *p, const void *end, void *res, int len)
-{
-	const void *q = (const void *)((const char *)p + len);
-	if (unlikely(q > end || q < p))
-		return ERR_PTR(-EFAULT);
-	memcpy(res, p, len);
-	return q;
-}
-
-static const void *
-simple_get_netobj(const void *p, const void *end, struct xdr_netobj *res)
-{
-	const void *q;
-	unsigned int len;
-	p = simple_get_bytes(p, end, &len, sizeof(len));
-	if (IS_ERR(p))
-		return p;
-	res->len = len;
-	if (len == 0) {
-		res->data = NULL;
-		return p;
-	}
-	q = (const void *)((const char *)p + len);
-	if (unlikely(q > end || q < p))
-		return ERR_PTR(-EFAULT);
-	res->data = kmemdup(p, len, GFP_NOFS);
-	if (unlikely(res->data == NULL))
-		return ERR_PTR(-ENOMEM);
-	return q;
-}
-
-static int
-gss_import_sec_context_spkm3(const void *p, size_t len,
-				struct gss_ctx *ctx_id,
-				gfp_t gfp_mask)
-{
-	const void *end = (const void *)((const char *)p + len);
-	struct	spkm3_ctx *ctx;
-	int	version;
-
-	if (!(ctx = kzalloc(sizeof(*ctx), gfp_mask)))
-		goto out_err;
-
-	p = simple_get_bytes(p, end, &version, sizeof(version));
-	if (IS_ERR(p))
-		goto out_err_free_ctx;
-	if (version != 1) {
-		dprintk("RPC:       unknown spkm3 token format: "
-				"obsolete nfs-utils?\n");
-		p = ERR_PTR(-EINVAL);
-		goto out_err_free_ctx;
-	}
-
-	p = simple_get_netobj(p, end, &ctx->ctx_id);
-	if (IS_ERR(p))
-		goto out_err_free_ctx;
-
-	p = simple_get_bytes(p, end, &ctx->endtime, sizeof(ctx->endtime));
-	if (IS_ERR(p))
-		goto out_err_free_ctx_id;
-
-	p = simple_get_netobj(p, end, &ctx->mech_used);
-	if (IS_ERR(p))
-		goto out_err_free_ctx_id;
-
-	p = simple_get_bytes(p, end, &ctx->ret_flags, sizeof(ctx->ret_flags));
-	if (IS_ERR(p))
-		goto out_err_free_mech;
-
-	p = simple_get_netobj(p, end, &ctx->conf_alg);
-	if (IS_ERR(p))
-		goto out_err_free_mech;
-
-	p = simple_get_netobj(p, end, &ctx->derived_conf_key);
-	if (IS_ERR(p))
-		goto out_err_free_conf_alg;
-
-	p = simple_get_netobj(p, end, &ctx->intg_alg);
-	if (IS_ERR(p))
-		goto out_err_free_conf_key;
-
-	p = simple_get_netobj(p, end, &ctx->derived_integ_key);
-	if (IS_ERR(p))
-		goto out_err_free_intg_alg;
-
-	if (p != end) {
-		p = ERR_PTR(-EFAULT);
-		goto out_err_free_intg_key;
-	}
-
-	ctx_id->internal_ctx_id = ctx;
-
-	dprintk("RPC:       Successfully imported new spkm context.\n");
-	return 0;
-
-out_err_free_intg_key:
-	kfree(ctx->derived_integ_key.data);
-out_err_free_intg_alg:
-	kfree(ctx->intg_alg.data);
-out_err_free_conf_key:
-	kfree(ctx->derived_conf_key.data);
-out_err_free_conf_alg:
-	kfree(ctx->conf_alg.data);
-out_err_free_mech:
-	kfree(ctx->mech_used.data);
-out_err_free_ctx_id:
-	kfree(ctx->ctx_id.data);
-out_err_free_ctx:
-	kfree(ctx);
-out_err:
-	return PTR_ERR(p);
-}
-
-static void
-gss_delete_sec_context_spkm3(void *internal_ctx)
-{
-	struct spkm3_ctx *sctx = internal_ctx;
-
-	kfree(sctx->derived_integ_key.data);
-	kfree(sctx->intg_alg.data);
-	kfree(sctx->derived_conf_key.data);
-	kfree(sctx->conf_alg.data);
-	kfree(sctx->mech_used.data);
-	kfree(sctx->ctx_id.data);
-	kfree(sctx);
-}
-
-static u32
-gss_verify_mic_spkm3(struct gss_ctx		*ctx,
-			struct xdr_buf		*signbuf,
-			struct xdr_netobj	*checksum)
-{
-	u32 maj_stat = 0;
-	struct spkm3_ctx *sctx = ctx->internal_ctx_id;
-
-	maj_stat = spkm3_read_token(sctx, checksum, signbuf, SPKM_MIC_TOK);
-
-	dprintk("RPC:       gss_verify_mic_spkm3 returning %d\n", maj_stat);
-	return maj_stat;
-}
-
-static u32
-gss_get_mic_spkm3(struct gss_ctx	*ctx,
-		     struct xdr_buf	*message_buffer,
-		     struct xdr_netobj	*message_token)
-{
-	u32 err = 0;
-	struct spkm3_ctx *sctx = ctx->internal_ctx_id;
-
-	err = spkm3_make_token(sctx, message_buffer,
-				message_token, SPKM_MIC_TOK);
-	dprintk("RPC:       gss_get_mic_spkm3 returning %d\n", err);
-	return err;
-}
-
-static const struct gss_api_ops gss_spkm3_ops = {
-	.gss_import_sec_context	= gss_import_sec_context_spkm3,
-	.gss_get_mic		= gss_get_mic_spkm3,
-	.gss_verify_mic		= gss_verify_mic_spkm3,
-	.gss_delete_sec_context	= gss_delete_sec_context_spkm3,
-};
-
-static struct pf_desc gss_spkm3_pfs[] = {
-	{RPC_AUTH_GSS_SPKM, RPC_GSS_SVC_NONE, "spkm3"},
-	{RPC_AUTH_GSS_SPKMI, RPC_GSS_SVC_INTEGRITY, "spkm3i"},
-};
-
-static struct gss_api_mech gss_spkm3_mech = {
-	.gm_name	= "spkm3",
-	.gm_owner	= THIS_MODULE,
-	.gm_oid		= {7, "\053\006\001\005\005\001\003"},
-	.gm_ops		= &gss_spkm3_ops,
-	.gm_pf_num	= ARRAY_SIZE(gss_spkm3_pfs),
-	.gm_pfs		= gss_spkm3_pfs,
-};
-
-static int __init init_spkm3_module(void)
-{
-	int status;
-
-	status = gss_mech_register(&gss_spkm3_mech);
-	if (status)
-		printk("Failed to register spkm3 gss mechanism!\n");
-	return status;
-}
-
-static void __exit cleanup_spkm3_module(void)
-{
-	gss_mech_unregister(&gss_spkm3_mech);
-}
-
-MODULE_LICENSE("GPL");
-module_init(init_spkm3_module);
-module_exit(cleanup_spkm3_module);
diff --git a/net/sunrpc/auth_gss/gss_spkm3_seal.c b/net/sunrpc/auth_gss/gss_spkm3_seal.c
deleted file mode 100644
index 5a3a65a..0000000
--- a/net/sunrpc/auth_gss/gss_spkm3_seal.c
+++ /dev/null
@@ -1,186 +0,0 @@
-/*
- *  linux/net/sunrpc/gss_spkm3_seal.c
- *
- *  Copyright (c) 2003 The Regents of the University of Michigan.
- *  All rights reserved.
- *
- *  Andy Adamson <andros@umich.edu>
- *
- *  Redistribution and use in source and binary forms, with or without
- *  modification, are permitted provided that the following conditions
- *  are met:
- *
- *  1. Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- *  2. Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution.
- *  3. Neither the name of the University nor the names of its
- *     contributors may be used to endorse or promote products derived
- *     from this software without specific prior written permission.
- *
- *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- *  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#include <linux/types.h>
-#include <linux/jiffies.h>
-#include <linux/sunrpc/gss_spkm3.h>
-#include <linux/random.h>
-#include <linux/crypto.h>
-#include <linux/pagemap.h>
-#include <linux/scatterlist.h>
-#include <linux/sunrpc/xdr.h>
-
-#ifdef RPC_DEBUG
-# define RPCDBG_FACILITY        RPCDBG_AUTH
-#endif
-
-const struct xdr_netobj hmac_md5_oid = { 8, "\x2B\x06\x01\x05\x05\x08\x01\x01"};
-const struct xdr_netobj cast5_cbc_oid = {9, "\x2A\x86\x48\x86\xF6\x7D\x07\x42\x0A"};
-
-/*
- * spkm3_make_token()
- *
- * Only SPKM_MIC_TOK with md5 intg-alg is supported
- */
-
-u32
-spkm3_make_token(struct spkm3_ctx *ctx,
-		   struct xdr_buf * text, struct xdr_netobj * token,
-		   int toktype)
-{
-	s32			checksum_type;
-	char			tokhdrbuf[25];
-	char			cksumdata[16];
-	struct xdr_netobj	md5cksum = {.len = 0, .data = cksumdata};
-	struct xdr_netobj	mic_hdr = {.len = 0, .data = tokhdrbuf};
-	int			tokenlen = 0;
-	unsigned char		*ptr;
-	s32			now;
-	int			ctxelen = 0, ctxzbit = 0;
-	int			md5elen = 0, md5zbit = 0;
-
-	now = jiffies;
-
-	if (ctx->ctx_id.len != 16) {
-		dprintk("RPC:       spkm3_make_token BAD ctx_id.len %d\n",
-				ctx->ctx_id.len);
-		goto out_err;
-	}
-
-	if (!g_OID_equal(&ctx->intg_alg, &hmac_md5_oid)) {
-		dprintk("RPC:       gss_spkm3_seal: unsupported I-ALG "
-				"algorithm.  only support hmac-md5 I-ALG.\n");
-		goto out_err;
-	} else
-		checksum_type = CKSUMTYPE_HMAC_MD5;
-
-	if (!g_OID_equal(&ctx->conf_alg, &cast5_cbc_oid)) {
-		dprintk("RPC:       gss_spkm3_seal: unsupported C-ALG "
-				"algorithm\n");
-		goto out_err;
-	}
-
-	if (toktype == SPKM_MIC_TOK) {
-		/* Calculate checksum over the mic-header */
-		asn1_bitstring_len(&ctx->ctx_id, &ctxelen, &ctxzbit);
-		spkm3_mic_header(&mic_hdr.data, &mic_hdr.len, ctx->ctx_id.data,
-				ctxelen, ctxzbit);
-		if (make_spkm3_checksum(checksum_type, &ctx->derived_integ_key,
-					(char *)mic_hdr.data, mic_hdr.len,
-					text, 0, &md5cksum))
-			goto out_err;
-
-		asn1_bitstring_len(&md5cksum, &md5elen, &md5zbit);
-		tokenlen = 10 + ctxelen + 1 + md5elen + 1;
-
-		/* Create token header using generic routines */
-		token->len = g_token_size(&ctx->mech_used, tokenlen + 2);
-
-		ptr = token->data;
-		g_make_token_header(&ctx->mech_used, tokenlen + 2, &ptr);
-
-		spkm3_make_mic_token(&ptr, tokenlen, &mic_hdr, &md5cksum, md5elen, md5zbit);
-	} else if (toktype == SPKM_WRAP_TOK) { /* Not Supported */
-		dprintk("RPC:       gss_spkm3_seal: SPKM_WRAP_TOK "
-				"not supported\n");
-		goto out_err;
-	}
-
-	/* XXX need to implement sequence numbers, and ctx->expired */
-
-	return  GSS_S_COMPLETE;
-out_err:
-	token->data = NULL;
-	token->len = 0;
-	return GSS_S_FAILURE;
-}
-
-static int
-spkm3_checksummer(struct scatterlist *sg, void *data)
-{
-	struct hash_desc *desc = data;
-
-	return crypto_hash_update(desc, sg, sg->length);
-}
-
-/* checksum the plaintext data and hdrlen bytes of the token header */
-s32
-make_spkm3_checksum(s32 cksumtype, struct xdr_netobj *key, char *header,
-		    unsigned int hdrlen, struct xdr_buf *body,
-		    unsigned int body_offset, struct xdr_netobj *cksum)
-{
-	char				*cksumname;
-	struct hash_desc		desc; /* XXX add to ctx? */
-	struct scatterlist		sg[1];
-	int err;
-
-	switch (cksumtype) {
-		case CKSUMTYPE_HMAC_MD5:
-			cksumname = "hmac(md5)";
-			break;
-		default:
-			dprintk("RPC:       spkm3_make_checksum:"
-					" unsupported checksum %d", cksumtype);
-			return GSS_S_FAILURE;
-	}
-
-	if (key->data == NULL || key->len <= 0) return GSS_S_FAILURE;
-
-	desc.tfm = crypto_alloc_hash(cksumname, 0, CRYPTO_ALG_ASYNC);
-	if (IS_ERR(desc.tfm))
-		return GSS_S_FAILURE;
-	cksum->len = crypto_hash_digestsize(desc.tfm);
-	desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
-
-	err = crypto_hash_setkey(desc.tfm, key->data, key->len);
-	if (err)
-		goto out;
-
-	err = crypto_hash_init(&desc);
-	if (err)
-		goto out;
-
-	sg_init_one(sg, header, hdrlen);
-	crypto_hash_update(&desc, sg, sg->length);
-
-	xdr_process_buf(body, body_offset, body->len - body_offset,
-			spkm3_checksummer, &desc);
-	crypto_hash_final(&desc, cksum->data);
-
-out:
-	crypto_free_hash(desc.tfm);
-
-	return err ? GSS_S_FAILURE : 0;
-}
diff --git a/net/sunrpc/auth_gss/gss_spkm3_token.c b/net/sunrpc/auth_gss/gss_spkm3_token.c
deleted file mode 100644
index a99825d..0000000
--- a/net/sunrpc/auth_gss/gss_spkm3_token.c
+++ /dev/null
@@ -1,267 +0,0 @@
-/*
- *  linux/net/sunrpc/gss_spkm3_token.c
- *
- *  Copyright (c) 2003 The Regents of the University of Michigan.
- *  All rights reserved.
- *
- *  Andy Adamson <andros@umich.edu>
- *
- *  Redistribution and use in source and binary forms, with or without
- *  modification, are permitted provided that the following conditions
- *  are met:
- *
- *  1. Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- *  2. Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution.
- *  3. Neither the name of the University nor the names of its
- *     contributors may be used to endorse or promote products derived
- *     from this software without specific prior written permission.
- *
- *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- *  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/jiffies.h>
-#include <linux/sunrpc/gss_spkm3.h>
-#include <linux/random.h>
-#include <linux/crypto.h>
-
-#ifdef RPC_DEBUG
-# define RPCDBG_FACILITY        RPCDBG_AUTH
-#endif
-
-/*
- * asn1_bitstring_len()
- *
- * calculate the asn1 bitstring length of the xdr_netobject
- */
-void
-asn1_bitstring_len(struct xdr_netobj *in, int *enclen, int *zerobits)
-{
-	int i, zbit = 0,elen = in->len;
-	char *ptr;
-
-	ptr = &in->data[in->len -1];
-
-	/* count trailing 0's */
-	for(i = in->len; i > 0; i--) {
-		if (*ptr == 0) {
-			ptr--;
-			elen--;
-		} else
-			break;
-	}
-
-	/* count number of 0 bits in final octet */
-	ptr = &in->data[elen - 1];
-	for(i = 0; i < 8; i++) {
-		short mask = 0x01;
-
-		if (!((mask << i) & *ptr))
-			zbit++;
-		else
-			break;
-	}
-	*enclen = elen;
-	*zerobits = zbit;
-}
-
-/*
- * decode_asn1_bitstring()
- *
- * decode a bitstring into a buffer of the expected length.
- * enclen = bit string length
- * explen = expected length (define in rfc)
- */
-int
-decode_asn1_bitstring(struct xdr_netobj *out, char *in, int enclen, int explen)
-{
-	if (!(out->data = kzalloc(explen,GFP_NOFS)))
-		return 0;
-	out->len = explen;
-	memcpy(out->data, in, enclen);
-	return 1;
-}
-
-/*
- * SPKMInnerContextToken choice SPKM_MIC asn1 token layout
- *
- * contextid is always 16 bytes plain data. max asn1 bitstring len = 17.
- *
- * tokenlen = pos[0] to end of token (max pos[45] with MD5 cksum)
- *
- * pos  value
- * ----------
- * [0]	a4  SPKM-MIC tag
- * [1]	??  innertoken length  (max 44)
- *
- *
- * tok_hdr piece of checksum data starts here
- *
- * the maximum mic-header len = 9 + 17 = 26
- *	mic-header
- *	----------
- * [2]	30      SEQUENCE tag
- * [3]	??	mic-header length: (max 23) = TokenID + ContextID
- *
- *		TokenID  - all fields constant and can be hardcoded
- *		-------
- * [4]	  02	Type 2
- * [5]	  02	Length 2
- * [6][7] 01 01	TokenID (SPKM_MIC_TOK)
- *
- *		ContextID  - encoded length not constant, calculated
- *		---------
- * [8]	03	Type 3
- * [9]	??	encoded length
- * [10]	??	ctxzbit
- * [11]	 	contextid
- *
- * mic_header piece of checksum data ends here.
- *
- *	int-cksum - encoded length not constant, calculated
- *	---------
- * [??]	03	Type 3
- * [??]	??	encoded length
- * [??]	??	md5zbit
- * [??]	 	int-cksum (NID_md5 = 16)
- *
- * maximum SPKM-MIC innercontext token length =
- *	 10 + encoded contextid_size(17 max) + 2 + encoded
- *       cksum_size (17 maxfor NID_md5) = 46
- */
-
-/*
- * spkm3_mic_header()
- *
- * Prepare the SPKM_MIC_TOK mic-header for check-sum calculation
- * elen: 16 byte context id asn1 bitstring encoded length
- */
-void
-spkm3_mic_header(unsigned char **hdrbuf, unsigned int *hdrlen, unsigned char *ctxdata, int elen, int zbit)
-{
-	char *hptr = *hdrbuf;
-	char *top = *hdrbuf;
-
-	*(u8 *)hptr++ = 0x30;
-	*(u8 *)hptr++ = elen + 7;  /* on the wire header length */
-
-	/* tokenid */
-	*(u8 *)hptr++ = 0x02;
-	*(u8 *)hptr++ = 0x02;
-	*(u8 *)hptr++ = 0x01;
-	*(u8 *)hptr++ = 0x01;
-
-	/* coniextid */
-	*(u8 *)hptr++ = 0x03;
-	*(u8 *)hptr++ = elen + 1; /* add 1 to include zbit */
-	*(u8 *)hptr++ = zbit;
-	memcpy(hptr, ctxdata, elen);
-	hptr += elen;
-	*hdrlen = hptr - top;
-}
-
-/*
- * spkm3_mic_innercontext_token()
- *
- * *tokp points to the beginning of the SPKM_MIC token  described
- * in rfc 2025, section 3.2.1:
- *
- * toklen is the inner token length
- */
-void
-spkm3_make_mic_token(unsigned char **tokp, int toklen, struct xdr_netobj *mic_hdr, struct xdr_netobj *md5cksum, int md5elen, int md5zbit)
-{
-	unsigned char *ict = *tokp;
-
-	*(u8 *)ict++ = 0xa4;
-	*(u8 *)ict++ = toklen;
-	memcpy(ict, mic_hdr->data, mic_hdr->len);
-	ict += mic_hdr->len;
-
-	*(u8 *)ict++ = 0x03;
-	*(u8 *)ict++ = md5elen + 1; /* add 1 to include zbit */
-	*(u8 *)ict++ = md5zbit;
-	memcpy(ict, md5cksum->data, md5elen);
-}
-
-u32
-spkm3_verify_mic_token(unsigned char **tokp, int *mic_hdrlen, unsigned char **cksum)
-{
-	struct xdr_netobj       spkm3_ctx_id = {.len =0, .data = NULL};
-	unsigned char 		*ptr = *tokp;
-	int 			ctxelen;
-	u32     		ret = GSS_S_DEFECTIVE_TOKEN;
-
-	/* spkm3 innercontext token preamble */
-	if ((ptr[0] != 0xa4) || (ptr[2] != 0x30)) {
-		dprintk("RPC:       BAD SPKM ictoken preamble\n");
-		goto out;
-	}
-
-	*mic_hdrlen = ptr[3];
-
-	/* token type */
-	if ((ptr[4] != 0x02) || (ptr[5] != 0x02)) {
-		dprintk("RPC:       BAD asn1 SPKM3 token type\n");
-		goto out;
-	}
-
-	/* only support SPKM_MIC_TOK */
-	if((ptr[6] != 0x01) || (ptr[7] != 0x01)) {
-		dprintk("RPC:       ERROR unsupported SPKM3 token\n");
-		goto out;
-	}
-
-	/* contextid */
-	if (ptr[8] != 0x03) {
-		dprintk("RPC:       BAD SPKM3 asn1 context-id type\n");
-		goto out;
-	}
-
-	ctxelen = ptr[9];
-	if (ctxelen > 17) {  /* length includes asn1 zbit octet */
-		dprintk("RPC:       BAD SPKM3 contextid len %d\n", ctxelen);
-		goto out;
-	}
-
-	/* ignore ptr[10] */
-
-	if(!decode_asn1_bitstring(&spkm3_ctx_id, &ptr[11], ctxelen - 1, 16))
-		goto out;
-
-	/*
-	* in the current implementation: the optional int-alg is not present
-	* so the default int-alg (md5) is used the optional snd-seq field is
-	* also not present
-	*/
-
-	if (*mic_hdrlen != 6 + ctxelen) {
-		dprintk("RPC:       BAD SPKM_ MIC_TOK header len %d: we only "
-				"support default int-alg (should be absent) "
-				"and do not support snd-seq\n", *mic_hdrlen);
-		goto out;
-	}
-	/* checksum */
-	*cksum = (&ptr[10] + ctxelen); /* ctxelen includes ptr[10] */
-
-	ret = GSS_S_COMPLETE;
-out:
-	kfree(spkm3_ctx_id.data);
-	return ret;
-}
-
diff --git a/net/sunrpc/auth_gss/gss_spkm3_unseal.c b/net/sunrpc/auth_gss/gss_spkm3_unseal.c
deleted file mode 100644
index cc21ee8..0000000
--- a/net/sunrpc/auth_gss/gss_spkm3_unseal.c
+++ /dev/null
@@ -1,127 +0,0 @@
-/*
- *  linux/net/sunrpc/gss_spkm3_unseal.c
- *
- *  Copyright (c) 2003 The Regents of the University of Michigan.
- *  All rights reserved.
- *
- *  Andy Adamson <andros@umich.edu>
- *
- *  Redistribution and use in source and binary forms, with or without
- *  modification, are permitted provided that the following conditions
- *  are met:
- *
- *  1. Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- *  2. Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution.
- *  3. Neither the name of the University nor the names of its
- *     contributors may be used to endorse or promote products derived
- *     from this software without specific prior written permission.
- *
- *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- *  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/jiffies.h>
-#include <linux/sunrpc/gss_spkm3.h>
-#include <linux/crypto.h>
-
-#ifdef RPC_DEBUG
-# define RPCDBG_FACILITY        RPCDBG_AUTH
-#endif
-
-/*
- * spkm3_read_token()
- *
- * only SPKM_MIC_TOK with md5 intg-alg is supported
- */
-u32
-spkm3_read_token(struct spkm3_ctx *ctx,
-		struct xdr_netobj *read_token,    /* checksum */
-		struct xdr_buf *message_buffer, /* signbuf */
-		int toktype)
-{
-	s32			checksum_type;
-	s32			code;
-	struct xdr_netobj	wire_cksum = {.len =0, .data = NULL};
-	char			cksumdata[16];
-	struct xdr_netobj	md5cksum = {.len = 0, .data = cksumdata};
-	unsigned char		*ptr = (unsigned char *)read_token->data;
-	unsigned char		*cksum;
-	int			bodysize, md5elen;
-	int			mic_hdrlen;
-	u32			ret = GSS_S_DEFECTIVE_TOKEN;
-
-	if (g_verify_token_header((struct xdr_netobj *) &ctx->mech_used,
-					&bodysize, &ptr, read_token->len))
-		goto out;
-
-	/* decode the token */
-
-	if (toktype != SPKM_MIC_TOK) {
-		dprintk("RPC:       BAD SPKM3 token type: %d\n", toktype);
-		goto out;
-	}
-
-	if ((ret = spkm3_verify_mic_token(&ptr, &mic_hdrlen, &cksum)))
-		goto out;
-
-	if (*cksum++ != 0x03) {
-		dprintk("RPC:       spkm3_read_token BAD checksum type\n");
-		goto out;
-	}
-	md5elen = *cksum++;
-	cksum++; 	/* move past the zbit */
-
-	if (!decode_asn1_bitstring(&wire_cksum, cksum, md5elen - 1, 16))
-		goto out;
-
-	/* HARD CODED FOR MD5 */
-
-	/* compute the checksum of the message.
-	 * ptr + 2 = start of header piece of checksum
-	 * mic_hdrlen + 2 = length of header piece of checksum
-	 */
-	ret = GSS_S_DEFECTIVE_TOKEN;
-	if (!g_OID_equal(&ctx->intg_alg, &hmac_md5_oid)) {
-		dprintk("RPC:       gss_spkm3_seal: unsupported I-ALG "
-				"algorithm\n");
-		goto out;
-	}
-
-	checksum_type = CKSUMTYPE_HMAC_MD5;
-
-	code = make_spkm3_checksum(checksum_type,
-		&ctx->derived_integ_key, ptr + 2, mic_hdrlen + 2,
-		message_buffer, 0, &md5cksum);
-
-	if (code)
-		goto out;
-
-	ret = GSS_S_BAD_SIG;
-	code = memcmp(md5cksum.data, wire_cksum.data, wire_cksum.len);
-	if (code) {
-		dprintk("RPC:       bad MIC checksum\n");
-		goto out;
-	}
-
-
-	/* XXX: need to add expiration and sequencing */
-	ret = GSS_S_COMPLETE;
-out:
-	kfree(wire_cksum.data);
-	return ret;
-}
diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
index cc385b3..dec2a6f 100644
--- a/net/sunrpc/auth_gss/svcauth_gss.c
+++ b/net/sunrpc/auth_gss/svcauth_gss.c
@@ -964,7 +964,7 @@ svcauth_gss_set_client(struct svc_rqst *rqstp)
 	if (rqstp->rq_gssclient == NULL)
 		return SVC_DENIED;
 	stat = svcauth_unix_set_client(rqstp);
-	if (stat == SVC_DROP)
+	if (stat == SVC_DROP || stat == SVC_CLOSE)
 		return stat;
 	return SVC_OK;
 }
@@ -1018,7 +1018,7 @@ static int svcauth_gss_handle_init(struct svc_rqst *rqstp,
 		return SVC_DENIED;
 	memset(&rsikey, 0, sizeof(rsikey));
 	if (dup_netobj(&rsikey.in_handle, &gc->gc_ctx))
-		return SVC_DROP;
+		return SVC_CLOSE;
 	*authp = rpc_autherr_badverf;
 	if (svc_safe_getnetobj(argv, &tmpobj)) {
 		kfree(rsikey.in_handle.data);
@@ -1026,38 +1026,35 @@ static int svcauth_gss_handle_init(struct svc_rqst *rqstp,
 	}
 	if (dup_netobj(&rsikey.in_token, &tmpobj)) {
 		kfree(rsikey.in_handle.data);
-		return SVC_DROP;
+		return SVC_CLOSE;
 	}
 
 	/* Perform upcall, or find upcall result: */
 	rsip = rsi_lookup(&rsikey);
 	rsi_free(&rsikey);
 	if (!rsip)
-		return SVC_DROP;
-	switch (cache_check(&rsi_cache, &rsip->h, &rqstp->rq_chandle)) {
-	case -EAGAIN:
-	case -ETIMEDOUT:
-	case -ENOENT:
+		return SVC_CLOSE;
+	if (cache_check(&rsi_cache, &rsip->h, &rqstp->rq_chandle) < 0)
 		/* No upcall result: */
-		return SVC_DROP;
-	case 0:
-		ret = SVC_DROP;
-		/* Got an answer to the upcall; use it: */
-		if (gss_write_init_verf(rqstp, rsip))
-			goto out;
-		if (resv->iov_len + 4 > PAGE_SIZE)
-			goto out;
-		svc_putnl(resv, RPC_SUCCESS);
-		if (svc_safe_putnetobj(resv, &rsip->out_handle))
-			goto out;
-		if (resv->iov_len + 3 * 4 > PAGE_SIZE)
-			goto out;
-		svc_putnl(resv, rsip->major_status);
-		svc_putnl(resv, rsip->minor_status);
-		svc_putnl(resv, GSS_SEQ_WIN);
-		if (svc_safe_putnetobj(resv, &rsip->out_token))
-			goto out;
-	}
+		return SVC_CLOSE;
+
+	ret = SVC_CLOSE;
+	/* Got an answer to the upcall; use it: */
+	if (gss_write_init_verf(rqstp, rsip))
+		goto out;
+	if (resv->iov_len + 4 > PAGE_SIZE)
+		goto out;
+	svc_putnl(resv, RPC_SUCCESS);
+	if (svc_safe_putnetobj(resv, &rsip->out_handle))
+		goto out;
+	if (resv->iov_len + 3 * 4 > PAGE_SIZE)
+		goto out;
+	svc_putnl(resv, rsip->major_status);
+	svc_putnl(resv, rsip->minor_status);
+	svc_putnl(resv, GSS_SEQ_WIN);
+	if (svc_safe_putnetobj(resv, &rsip->out_token))
+		goto out;
+
 	ret = SVC_COMPLETE;
 out:
 	cache_put(&rsip->h, &rsi_cache);