Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask into merge-rr-cpumask

Conflicts:
	arch/x86/kernel/io_apic.c
	kernel/rcuclassic.c
	kernel/sched.c
	kernel/time/tick-sched.c

Signed-off-by: Mike Travis <travis@sgi.com>
[ mingo@elte.hu: backmerged typo fix for io_apic.c ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 160 insertions, 130 deletions

diff --git a/crypto/crc32c.c b/crypto/crc32c.c
index a882d9e4e63..973bc2cfab2 100644
--- a/crypto/crc32c.c
+++ b/crypto/crc32c.c
@@ -3,8 +3,29 @@
  *
  * CRC32C chksum
  *
- * This module file is a wrapper to invoke the lib/crc32c routines.
+ *@Article{castagnoli-crc,
+ * author =       { Guy Castagnoli and Stefan Braeuer and Martin Herrman},
+ * title =        {{Optimization of Cyclic Redundancy-Check Codes with 24
+ *                 and 32 Parity Bits}},
+ * journal =      IEEE Transactions on Communication,
+ * year =         {1993},
+ * volume =       {41},
+ * number =       {6},
+ * pages =        {},
+ * month =        {June},
+ *}
+ * Used by the iSCSI driver, possibly others, and derived from the
+ * the iscsi-crc.c module of the linux-iscsi driver at
+ * http://linux-iscsi.sourceforge.net.
  *
+ * Following the example of lib/crc32, this function is intended to be
+ * flexible and useful for all users.  Modules that currently have their
+ * own crc32c, but hopefully may be able to use this one are:
+ *  net/sctp (please add all your doco to here if you change to
+ *            use this one!)
+ *  <endoflist>
+ *
+ * Copyright (c) 2004 Cisco Systems, Inc.
  * Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au>
  *
  * This program is free software; you can redistribute it and/or modify it
@@ -18,208 +39,217 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/string.h>
-#include <linux/crc32c.h>
 #include <linux/kernel.h>
 
 #define CHKSUM_BLOCK_SIZE	1
 #define CHKSUM_DIGEST_SIZE	4
 
 struct chksum_ctx {
-	u32 crc;
 	u32 key;
 };
 
+struct chksum_desc_ctx {
+	u32 crc;
+};
+
 /*
- * Steps through buffer one byte at at time, calculates reflected 
- * crc using table.
+ * This is the CRC-32C table
+ * Generated with:
+ * width = 32 bits
+ * poly = 0x1EDC6F41
+ * reflect input bytes = true
+ * reflect output bytes = true
  */
 
-static void chksum_init(struct crypto_tfm *tfm)
-{
-	struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
-
-	mctx->crc = mctx->key;
-}
+static const u32 crc32c_table[256] = {
+	0x00000000L, 0xF26B8303L, 0xE13B70F7L, 0x1350F3F4L,
+	0xC79A971FL, 0x35F1141CL, 0x26A1E7E8L, 0xD4CA64EBL,
+	0x8AD958CFL, 0x78B2DBCCL, 0x6BE22838L, 0x9989AB3BL,
+	0x4D43CFD0L, 0xBF284CD3L, 0xAC78BF27L, 0x5E133C24L,
+	0x105EC76FL, 0xE235446CL, 0xF165B798L, 0x030E349BL,
+	0xD7C45070L, 0x25AFD373L, 0x36FF2087L, 0xC494A384L,
+	0x9A879FA0L, 0x68EC1CA3L, 0x7BBCEF57L, 0x89D76C54L,
+	0x5D1D08BFL, 0xAF768BBCL, 0xBC267848L, 0x4E4DFB4BL,
+	0x20BD8EDEL, 0xD2D60DDDL, 0xC186FE29L, 0x33ED7D2AL,
+	0xE72719C1L, 0x154C9AC2L, 0x061C6936L, 0xF477EA35L,
+	0xAA64D611L, 0x580F5512L, 0x4B5FA6E6L, 0xB93425E5L,
+	0x6DFE410EL, 0x9F95C20DL, 0x8CC531F9L, 0x7EAEB2FAL,
+	0x30E349B1L, 0xC288CAB2L, 0xD1D83946L, 0x23B3BA45L,
+	0xF779DEAEL, 0x05125DADL, 0x1642AE59L, 0xE4292D5AL,
+	0xBA3A117EL, 0x4851927DL, 0x5B016189L, 0xA96AE28AL,
+	0x7DA08661L, 0x8FCB0562L, 0x9C9BF696L, 0x6EF07595L,
+	0x417B1DBCL, 0xB3109EBFL, 0xA0406D4BL, 0x522BEE48L,
+	0x86E18AA3L, 0x748A09A0L, 0x67DAFA54L, 0x95B17957L,
+	0xCBA24573L, 0x39C9C670L, 0x2A993584L, 0xD8F2B687L,
+	0x0C38D26CL, 0xFE53516FL, 0xED03A29BL, 0x1F682198L,
+	0x5125DAD3L, 0xA34E59D0L, 0xB01EAA24L, 0x42752927L,
+	0x96BF4DCCL, 0x64D4CECFL, 0x77843D3BL, 0x85EFBE38L,
+	0xDBFC821CL, 0x2997011FL, 0x3AC7F2EBL, 0xC8AC71E8L,
+	0x1C661503L, 0xEE0D9600L, 0xFD5D65F4L, 0x0F36E6F7L,
+	0x61C69362L, 0x93AD1061L, 0x80FDE395L, 0x72966096L,
+	0xA65C047DL, 0x5437877EL, 0x4767748AL, 0xB50CF789L,
+	0xEB1FCBADL, 0x197448AEL, 0x0A24BB5AL, 0xF84F3859L,
+	0x2C855CB2L, 0xDEEEDFB1L, 0xCDBE2C45L, 0x3FD5AF46L,
+	0x7198540DL, 0x83F3D70EL, 0x90A324FAL, 0x62C8A7F9L,
+	0xB602C312L, 0x44694011L, 0x5739B3E5L, 0xA55230E6L,
+	0xFB410CC2L, 0x092A8FC1L, 0x1A7A7C35L, 0xE811FF36L,
+	0x3CDB9BDDL, 0xCEB018DEL, 0xDDE0EB2AL, 0x2F8B6829L,
+	0x82F63B78L, 0x709DB87BL, 0x63CD4B8FL, 0x91A6C88CL,
+	0x456CAC67L, 0xB7072F64L, 0xA457DC90L, 0x563C5F93L,
+	0x082F63B7L, 0xFA44E0B4L, 0xE9141340L, 0x1B7F9043L,
+	0xCFB5F4A8L, 0x3DDE77ABL, 0x2E8E845FL, 0xDCE5075CL,
+	0x92A8FC17L, 0x60C37F14L, 0x73938CE0L, 0x81F80FE3L,
+	0x55326B08L, 0xA759E80BL, 0xB4091BFFL, 0x466298FCL,
+	0x1871A4D8L, 0xEA1A27DBL, 0xF94AD42FL, 0x0B21572CL,
+	0xDFEB33C7L, 0x2D80B0C4L, 0x3ED04330L, 0xCCBBC033L,
+	0xA24BB5A6L, 0x502036A5L, 0x4370C551L, 0xB11B4652L,
+	0x65D122B9L, 0x97BAA1BAL, 0x84EA524EL, 0x7681D14DL,
+	0x2892ED69L, 0xDAF96E6AL, 0xC9A99D9EL, 0x3BC21E9DL,
+	0xEF087A76L, 0x1D63F975L, 0x0E330A81L, 0xFC588982L,
+	0xB21572C9L, 0x407EF1CAL, 0x532E023EL, 0xA145813DL,
+	0x758FE5D6L, 0x87E466D5L, 0x94B49521L, 0x66DF1622L,
+	0x38CC2A06L, 0xCAA7A905L, 0xD9F75AF1L, 0x2B9CD9F2L,
+	0xFF56BD19L, 0x0D3D3E1AL, 0x1E6DCDEEL, 0xEC064EEDL,
+	0xC38D26C4L, 0x31E6A5C7L, 0x22B65633L, 0xD0DDD530L,
+	0x0417B1DBL, 0xF67C32D8L, 0xE52CC12CL, 0x1747422FL,
+	0x49547E0BL, 0xBB3FFD08L, 0xA86F0EFCL, 0x5A048DFFL,
+	0x8ECEE914L, 0x7CA56A17L, 0x6FF599E3L, 0x9D9E1AE0L,
+	0xD3D3E1ABL, 0x21B862A8L, 0x32E8915CL, 0xC083125FL,
+	0x144976B4L, 0xE622F5B7L, 0xF5720643L, 0x07198540L,
+	0x590AB964L, 0xAB613A67L, 0xB831C993L, 0x4A5A4A90L,
+	0x9E902E7BL, 0x6CFBAD78L, 0x7FAB5E8CL, 0x8DC0DD8FL,
+	0xE330A81AL, 0x115B2B19L, 0x020BD8EDL, 0xF0605BEEL,
+	0x24AA3F05L, 0xD6C1BC06L, 0xC5914FF2L, 0x37FACCF1L,
+	0x69E9F0D5L, 0x9B8273D6L, 0x88D28022L, 0x7AB90321L,
+	0xAE7367CAL, 0x5C18E4C9L, 0x4F48173DL, 0xBD23943EL,
+	0xF36E6F75L, 0x0105EC76L, 0x12551F82L, 0xE03E9C81L,
+	0x34F4F86AL, 0xC69F7B69L, 0xD5CF889DL, 0x27A40B9EL,
+	0x79B737BAL, 0x8BDCB4B9L, 0x988C474DL, 0x6AE7C44EL,
+	0xBE2DA0A5L, 0x4C4623A6L, 0x5F16D052L, 0xAD7D5351L
+};
 
 /*
- * Setting the seed allows arbitrary accumulators and flexible XOR policy
- * If your algorithm starts with ~0, then XOR with ~0 before you set
- * the seed.
+ * Steps through buffer one byte at at time, calculates reflected
+ * crc using table.
  */
-static int chksum_setkey(struct crypto_tfm *tfm, const u8 *key,
-			 unsigned int keylen)
-{
-	struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
 
-	if (keylen != sizeof(mctx->crc)) {
-		tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
-		return -EINVAL;
-	}
-	mctx->key = le32_to_cpu(*(__le32 *)key);
-	return 0;
-}
-
-static void chksum_update(struct crypto_tfm *tfm, const u8 *data,
-			  unsigned int length)
+static u32 crc32c(u32 crc, const u8 *data, unsigned int length)
 {
-	struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
+	while (length--)
+		crc = crc32c_table[(crc ^ *data++) & 0xFFL] ^ (crc >> 8);
 
-	mctx->crc = crc32c(mctx->crc, data, length);
+	return crc;
 }
 
-static void chksum_final(struct crypto_tfm *tfm, u8 *out)
-{
-	struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
-	
-	*(__le32 *)out = ~cpu_to_le32(mctx->crc);
-}
+/*
+ * Steps through buffer one byte at at time, calculates reflected 
+ * crc using table.
+ */
 
-static int crc32c_cra_init_old(struct crypto_tfm *tfm)
+static int chksum_init(struct shash_desc *desc)
 {
-	struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
+	struct chksum_ctx *mctx = crypto_shash_ctx(desc->tfm);
+	struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
+
+	ctx->crc = mctx->key;
 
-	mctx->key = ~0;
 	return 0;
 }
 
-static struct crypto_alg old_alg = {
-	.cra_name	=	"crc32c",
-	.cra_flags	=	CRYPTO_ALG_TYPE_DIGEST,
-	.cra_blocksize	=	CHKSUM_BLOCK_SIZE,
-	.cra_ctxsize	=	sizeof(struct chksum_ctx),
-	.cra_module	=	THIS_MODULE,
-	.cra_list	=	LIST_HEAD_INIT(old_alg.cra_list),
-	.cra_init	=	crc32c_cra_init_old,
-	.cra_u		=	{
-		.digest = {
-			 .dia_digestsize=	CHKSUM_DIGEST_SIZE,
-			 .dia_setkey	=	chksum_setkey,
-			 .dia_init   	= 	chksum_init,
-			 .dia_update 	=	chksum_update,
-			 .dia_final  	=	chksum_final
-		 }
-	}
-};
-
 /*
  * Setting the seed allows arbitrary accumulators and flexible XOR policy
  * If your algorithm starts with ~0, then XOR with ~0 before you set
  * the seed.
  */
-static int crc32c_setkey(struct crypto_ahash *hash, const u8 *key,
+static int chksum_setkey(struct crypto_shash *tfm, const u8 *key,
 			 unsigned int keylen)
 {
-	u32 *mctx = crypto_ahash_ctx(hash);
+	struct chksum_ctx *mctx = crypto_shash_ctx(tfm);
 
-	if (keylen != sizeof(u32)) {
-		crypto_ahash_set_flags(hash, CRYPTO_TFM_RES_BAD_KEY_LEN);
+	if (keylen != sizeof(mctx->key)) {
+		crypto_shash_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
 		return -EINVAL;
 	}
-	*mctx = le32_to_cpup((__le32 *)key);
+	mctx->key = le32_to_cpu(*(__le32 *)key);
 	return 0;
 }
 
-static int crc32c_init(struct ahash_request *req)
+static int chksum_update(struct shash_desc *desc, const u8 *data,
+			 unsigned int length)
 {
-	u32 *mctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
-	u32 *crcp = ahash_request_ctx(req);
+	struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
 
-	*crcp = *mctx;
+	ctx->crc = crc32c(ctx->crc, data, length);
 	return 0;
 }
 
-static int crc32c_update(struct ahash_request *req)
+static int chksum_final(struct shash_desc *desc, u8 *out)
 {
-	struct crypto_hash_walk walk;
-	u32 *crcp = ahash_request_ctx(req);
-	u32 crc = *crcp;
-	int nbytes;
-
-	for (nbytes = crypto_hash_walk_first(req, &walk); nbytes;
-	     nbytes = crypto_hash_walk_done(&walk, 0))
-		crc = crc32c(crc, walk.data, nbytes);
+	struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
 
-	*crcp = crc;
+	*(__le32 *)out = ~cpu_to_le32p(&ctx->crc);
 	return 0;
 }
 
-static int crc32c_final(struct ahash_request *req)
+static int __chksum_finup(u32 *crcp, const u8 *data, unsigned int len, u8 *out)
 {
-	u32 *crcp = ahash_request_ctx(req);
-	
-	*(__le32 *)req->result = ~cpu_to_le32p(crcp);
+	*(__le32 *)out = ~cpu_to_le32(crc32c(*crcp, data, len));
 	return 0;
 }
 
-static int crc32c_digest(struct ahash_request *req)
+static int chksum_finup(struct shash_desc *desc, const u8 *data,
+			unsigned int len, u8 *out)
 {
-	struct crypto_hash_walk walk;
-	u32 *mctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
-	u32 crc = *mctx;
-	int nbytes;
+	struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
 
-	for (nbytes = crypto_hash_walk_first(req, &walk); nbytes;
-	     nbytes = crypto_hash_walk_done(&walk, 0))
-		crc = crc32c(crc, walk.data, nbytes);
-
-	*(__le32 *)req->result = ~cpu_to_le32(crc);
-	return 0;
+	return __chksum_finup(&ctx->crc, data, len, out);
 }
 
-static int crc32c_cra_init(struct crypto_tfm *tfm)
+static int chksum_digest(struct shash_desc *desc, const u8 *data,
+			 unsigned int length, u8 *out)
 {
-	u32 *key = crypto_tfm_ctx(tfm);
+	struct chksum_ctx *mctx = crypto_shash_ctx(desc->tfm);
 
-	*key = ~0;
+	return __chksum_finup(&mctx->key, data, length, out);
+}
 
-	tfm->crt_ahash.reqsize = sizeof(u32);
+static int crc32c_cra_init(struct crypto_tfm *tfm)
+{
+	struct chksum_ctx *mctx = crypto_tfm_ctx(tfm);
 
+	mctx->key = ~0;
 	return 0;
 }
 
-static struct crypto_alg alg = {
-	.cra_name		=	"crc32c",
-	.cra_driver_name	=	"crc32c-generic",
-	.cra_priority		=	100,
-	.cra_flags		=	CRYPTO_ALG_TYPE_AHASH,
-	.cra_blocksize		=	CHKSUM_BLOCK_SIZE,
-	.cra_alignmask		=	3,
-	.cra_ctxsize		=	sizeof(u32),
-	.cra_module		=	THIS_MODULE,
-	.cra_list		=	LIST_HEAD_INIT(alg.cra_list),
-	.cra_init		=	crc32c_cra_init,
-	.cra_type		=	&crypto_ahash_type,
-	.cra_u			=	{
-		.ahash = {
-			 .digestsize	=	CHKSUM_DIGEST_SIZE,
-			 .setkey	=	crc32c_setkey,
-			 .init   	= 	crc32c_init,
-			 .update 	=	crc32c_update,
-			 .final  	=	crc32c_final,
-			 .digest  	=	crc32c_digest,
-		 }
+static struct shash_alg alg = {
+	.digestsize		=	CHKSUM_DIGEST_SIZE,
+	.setkey			=	chksum_setkey,
+	.init   		= 	chksum_init,
+	.update 		=	chksum_update,
+	.final  		=	chksum_final,
+	.finup  		=	chksum_finup,
+	.digest  		=	chksum_digest,
+	.descsize		=	sizeof(struct chksum_desc_ctx),
+	.base			=	{
+		.cra_name		=	"crc32c",
+		.cra_driver_name	=	"crc32c-generic",
+		.cra_priority		=	100,
+		.cra_blocksize		=	CHKSUM_BLOCK_SIZE,
+		.cra_alignmask		=	3,
+		.cra_ctxsize		=	sizeof(struct chksum_ctx),
+		.cra_module		=	THIS_MODULE,
+		.cra_init		=	crc32c_cra_init,
 	}
 };
 
 static int __init crc32c_mod_init(void)
 {
-	int err;
-
-	err = crypto_register_alg(&old_alg);
-	if (err)
-		return err;
-
-	err = crypto_register_alg(&alg);
-	if (err)
-		crypto_unregister_alg(&old_alg);
-
-	return err;
+	return crypto_register_shash(&alg);
 }
 
 static void __exit crc32c_mod_fini(void)
 {
-	crypto_unregister_alg(&alg);
-	crypto_unregister_alg(&old_alg);
+	crypto_unregister_shash(&alg);
 }
 
 module_init(crc32c_mod_init);