Merge master.kernel.org:/home/davem/BK/net-2.5

into penguin.transmeta.com:/home/penguin/torvalds/repositories/kernel/linux

Documentation/crypto/api-intro.txt

@@ -176,7 +176,7 @@ and;
   Nettle (http://www.lysator.liu.se/~nisse/nettle/)
     Niels Möller
 
-Original developers of the initial set of crypto algorithms:
+Original developers of the crypto algorithms:
 
   Dana L. How (DES)
   Andrew Tridgell and Steve French (MD4)
@@ -184,17 +184,23 @@ Original developers of the initial set of crypto algorithms:
   Steve Reid (SHA1)
   Jean-Luc Cooke (SHA256)
   Kazunori Miyazawa / USAGI (HMAC)
+  Matthew Skala (Twofish)
   
-The DES code was subsequently redeveloped by:
-
+DES algorithm contributors:
   Raimar Falke
   Gisle Sælensminde
   Niels Möller
 
-The Blowfish code was subsequently redeveloped by:
+Blowfish algorithm contributors:
   Herbert Valerio Riedel
   Kyle McMartin
 
+Twofish algorithm contributors:
+  Werner Koch
+  Marc Mutz
+
+SHA256 algorithm contributors:
+  Andrew McDonald
 
 Please send any credits updates or corrections to:
 James Morris <jmorris@intercode.com.au>

crypto/Kconfig

@@ -68,6 +68,20 @@ config CRYPTO_BLOWFISH
 	  See also:
 	  http://www.counterpane.com/blowfish.html
 
+config CRYPTO_TWOFISH
+	tristate "Twofish cipher algorithm"
+	depends on CRYPTO
+	help
+	  Twofish cipher algorithm.
+	  
+	  Twofish was submitted as an AES (Advanced Encryption Standard)
+	  candidate cipher by researchers at CounterPane Systems.  It is a
+	  16 round block cipher supporting key sizes of 128, 192, and 256
+	  bits.
+	  
+	  See also:
+	  http://www.counterpane.com/twofish.html
+
 config CRYPTO_TEST
 	tristate "Testing module"
 	depends on CRYPTO

crypto/Makefile

@@ -16,6 +16,7 @@ obj-$(CONFIG_CRYPTO_SHA1) += sha1.o
 obj-$(CONFIG_CRYPTO_SHA256) += sha256.o
 obj-$(CONFIG_CRYPTO_DES) += des.o
 obj-$(CONFIG_CRYPTO_BLOWFISH) += blowfish.o
+obj-$(CONFIG_CRYPTO_TWOFISH) += twofish.o
 
 obj-$(CONFIG_CRYPTO_TEST) += tcrypt.o
 

crypto/api.c

@@ -187,13 +187,6 @@ void crypto_free_tfm(struct crypto_tfm *tfm)
 	kfree(tfm);
 }
 
-static inline int crypto_alg_blocksize_check(struct crypto_alg *alg)
-{
-	return ((alg->cra_flags & CRYPTO_ALG_TYPE_MASK)
-			== CRYPTO_ALG_TYPE_CIPHER &&
-	         alg->cra_blocksize > CRYPTO_MAX_CIPHER_BLOCK_SIZE);
-}
-
 int crypto_register_alg(struct crypto_alg *alg)
 {
 	int ret = 0;
@@ -208,13 +201,6 @@ int crypto_register_alg(struct crypto_alg *alg)
 		}
 	}
 	
-	if (crypto_alg_blocksize_check(alg)) {
-		printk(KERN_WARNING "%s: blocksize %u exceeds max. "
-		       "size %u\n", __FUNCTION__, alg->cra_blocksize,
-		       CRYPTO_MAX_CIPHER_BLOCK_SIZE);
-		ret = -EINVAL;
-	}
-	else
 	list_add_tail(&alg->cra_list, &crypto_alg_list);
 out:	
 	up_write(&crypto_alg_sem);

crypto/cipher.c

@@ -29,6 +29,14 @@ static inline void xor_64(u8 *a, const u8 *b)
 	((u32 *)a)[1] ^= ((u32 *)b)[1];
 }
 
+static inline void xor_128(u8 *a, const u8 *b)
+{
+	((u32 *)a)[0] ^= ((u32 *)b)[0];
+	((u32 *)a)[1] ^= ((u32 *)b)[1];
+	((u32 *)a)[2] ^= ((u32 *)b)[2];
+	((u32 *)a)[3] ^= ((u32 *)b)[3];
+}
+
 static inline unsigned int sglen(struct scatterlist *sg, unsigned int nsg)
 {
 	unsigned int i, n;
@@ -116,7 +124,7 @@ static int crypt(struct crypto_tfm *tfm, struct scatterlist *sg,
 {
 	unsigned int i, coff;
 	unsigned int bsize = crypto_tfm_alg_blocksize(tfm);
-	u8 tmp[CRYPTO_MAX_CIPHER_BLOCK_SIZE];
+	u8 tmp[bsize];
 
 	if (sglen(sg, nsg) % bsize) {
 		tfm->crt_flags |= CRYPTO_TFM_RES_BAD_BLOCK_LEN;
@@ -164,16 +172,20 @@ static int crypt(struct crypto_tfm *tfm, struct scatterlist *sg,
 static void cbc_process(struct crypto_tfm *tfm,
                         u8 *block, cryptfn_t fn, int enc)
 {
+	/* Null encryption */
+	if (!tfm->crt_cipher.cit_iv)
+		return;
+		
 	if (enc) {
-		xor_64(tfm->crt_cipher.cit_iv, block);
+		tfm->crt_u.cipher.cit_xor_block(tfm->crt_cipher.cit_iv, block);
 		fn(tfm->crt_ctx, block, tfm->crt_cipher.cit_iv);
 		memcpy(tfm->crt_cipher.cit_iv, block,
 		       crypto_tfm_alg_blocksize(tfm));
 	} else {
-		u8 buf[CRYPTO_MAX_CIPHER_BLOCK_SIZE];
+		u8 buf[crypto_tfm_alg_blocksize(tfm)];
 		
 		fn(tfm->crt_ctx, buf, block);
-		xor_64(buf, tfm->crt_cipher.cit_iv);
+		tfm->crt_u.cipher.cit_xor_block(buf, tfm->crt_cipher.cit_iv);
 		memcpy(tfm->crt_cipher.cit_iv, block,
 		       crypto_tfm_alg_blocksize(tfm));
 		memcpy(block, buf, crypto_tfm_alg_blocksize(tfm));
@@ -279,11 +291,29 @@ int crypto_init_cipher_ops(struct crypto_tfm *tfm)
 	if (alg->cra_cipher.cia_ivsize &&
 	    ops->cit_mode != CRYPTO_TFM_MODE_ECB) {
 	    	
+	    	switch (crypto_tfm_alg_blocksize(tfm)) {
+	    	case 8:
+	    		ops->cit_xor_block = xor_64;
+	    		break;
+	    		
+	    	case 16:
+	    		ops->cit_xor_block = xor_128;
+	    		break;
+	    		
+	    	default:
+	    		printk(KERN_WARNING "%s: block size %u not supported\n",
+	    		       crypto_tfm_alg_name(tfm),
+	    		       crypto_tfm_alg_blocksize(tfm));
+	    		ret = -EINVAL;
+	    		goto out;
+	    	}
+	    	
 	    	ops->cit_iv = kmalloc(alg->cra_cipher.cia_ivsize, GFP_KERNEL);
 		if (ops->cit_iv == NULL)
 			ret = -ENOMEM;
 	}
 
+out:	
 	return ret;
 }
 

crypto/tcrypt.c

@@ -48,6 +48,7 @@ static char *tvmem;
 
 static char *check[] = {
 	"des", "md5", "des3_ede", "rot13", "sha1", "sha256", "blowfish",
+	"twofish",
 	 NULL
 };
 
@@ -333,15 +334,8 @@ test_hmac_sha256(void)
 
 		klen = strlen(hmac_sha256_tv[i].key);
 	
-		//printk("DS=%u\n", crypto_tfm_alg_digestsize(tfm));
-		
-		//printk("K=");
 		hexdump(hmac_sha256_tv[i].key, strlen(hmac_sha256_tv[i].key));
-		//printk("P=%s\n", hmac_sha256_tv[i].plaintext);
-		
 		crypto_hmac(tfm, hmac_sha256_tv[i].key, &klen, sg, 1, result);
-
-		//printk("H=");
 		hexdump(result, crypto_tfm_alg_digestsize(tfm));
 		printk("%s\n",
 		       memcmp(result, hmac_sha256_tv[i].digest,
@@ -1616,7 +1610,7 @@ test_blowfish(void)
 
 		sg[0].page = virt_to_page(p);
 		sg[0].offset = ((long) p & ~PAGE_MASK);
-		sg[0].length =  bf_tv[i].plen;;
+		sg[0].length =  bf_tv[i].plen;
 
 		crypto_cipher_set_iv(tfm, bf_tv[i].iv,
 				     crypto_tfm_alg_ivsize(tfm));
@@ -1661,7 +1655,7 @@ test_blowfish(void)
 
 		sg[0].page = virt_to_page(p);
 		sg[0].offset = ((long) p & ~PAGE_MASK);
-		sg[0].length =  bf_tv[i].plen;;
+		sg[0].length =  bf_tv[i].plen;
 
 		crypto_cipher_set_iv(tfm, bf_tv[i].iv,
 				     crypto_tfm_alg_ivsize(tfm));
@@ -1684,6 +1678,212 @@ test_blowfish(void)
 	crypto_free_tfm(tfm);
 }
 
+
+void
+test_twofish(void)
+{
+	unsigned int ret, i;
+	unsigned int tsize;
+	char *p, *q;
+	struct crypto_tfm *tfm;
+	char *key;
+	struct tf_tv *tf_tv;
+	struct scatterlist sg[1];
+
+	printk("\ntesting twofish encryption\n");
+
+	tsize = sizeof (tf_enc_tv_template);
+	if (tsize > TVMEMSIZE) {
+		printk("template (%u) too big for tvmem (%u)\n", tsize,
+		       TVMEMSIZE);
+		return;
+	}
+
+	memcpy(tvmem, tf_enc_tv_template, tsize);
+	tf_tv = (void *) tvmem;
+
+	tfm = crypto_alloc_tfm("twofish", 0);
+	if (tfm == NULL) {
+		printk("failed to load transform for blowfish (default ecb)\n");
+		return;
+	}
+
+	for (i = 0; i < TF_ENC_TEST_VECTORS; i++) {
+		printk("test %u (%d bit key):\n",
+			i + 1, tf_tv[i].keylen * 8);
+		key = tf_tv[i].key;
+
+		ret = crypto_cipher_setkey(tfm, key, tf_tv[i].keylen);
+		if (ret) {
+			printk("setkey() failed flags=%x\n", tfm->crt_flags);
+
+			if (!tf_tv[i].fail)
+				goto out;
+		}
+
+		p = tf_tv[i].plaintext;
+		sg[0].page = virt_to_page(p);
+		sg[0].offset = ((long) p & ~PAGE_MASK);
+		sg[0].length = tf_tv[i].plen;
+		ret = crypto_cipher_encrypt(tfm, sg, 1);
+		if (ret) {
+			printk("encrypt() failed flags=%x\n", tfm->crt_flags);
+			goto out;
+		}
+
+		q = kmap(sg[0].page) + sg[0].offset;
+		hexdump(q, tf_tv[i].rlen);
+
+		printk("%s\n", memcmp(q, tf_tv[i].result, tf_tv[i].rlen) ?
+			"fail" : "pass");
+	}
+
+	printk("\ntesting twofish decryption\n");
+
+	tsize = sizeof (tf_dec_tv_template);
+	if (tsize > TVMEMSIZE) {
+		printk("template (%u) too big for tvmem (%u)\n", tsize,
+		       TVMEMSIZE);
+		return;
+	}
+
+	memcpy(tvmem, tf_dec_tv_template, tsize);
+	tf_tv = (void *) tvmem;
+
+	for (i = 0; i < TF_DEC_TEST_VECTORS; i++) {
+		printk("test %u (%d bit key):\n",
+			i + 1, tf_tv[i].keylen * 8);
+		key = tf_tv[i].key;
+
+		ret = crypto_cipher_setkey(tfm, key, tf_tv[i].keylen);
+		if (ret) {
+			printk("setkey() failed flags=%x\n", tfm->crt_flags);
+
+			if (!tf_tv[i].fail)
+				goto out;
+		}
+
+		p = tf_tv[i].plaintext;
+		sg[0].page = virt_to_page(p);
+		sg[0].offset = ((long) p & ~PAGE_MASK);
+		sg[0].length = tf_tv[i].plen;
+		ret = crypto_cipher_decrypt(tfm, sg, 1);
+		if (ret) {
+			printk("decrypt() failed flags=%x\n", tfm->crt_flags);
+			goto out;
+		}
+
+		q = kmap(sg[0].page) + sg[0].offset;
+		hexdump(q, tf_tv[i].rlen);
+
+		printk("%s\n", memcmp(q, tf_tv[i].result, tf_tv[i].rlen) ?
+			"fail" : "pass");
+	}
+
+	crypto_free_tfm(tfm);
+	
+	tfm = crypto_alloc_tfm("twofish", CRYPTO_TFM_MODE_CBC);
+	if (tfm == NULL) {
+		printk("failed to load transform for twofish cbc\n");
+		return;
+	}
+
+	printk("\ntesting twofish cbc encryption\n");
+
+	tsize = sizeof (tf_cbc_enc_tv_template);
+	if (tsize > TVMEMSIZE) {
+		printk("template (%u) too big for tvmem (%u)\n", tsize,
+		       TVMEMSIZE);
+		goto out;
+	}
+	memcpy(tvmem, tf_cbc_enc_tv_template, tsize);
+	tf_tv = (void *) tvmem;
+
+	for (i = 0; i < TF_CBC_ENC_TEST_VECTORS; i++) {
+		printk("test %u (%d bit key):\n",
+			i + 1, tf_tv[i].keylen * 8);
+
+		key = tf_tv[i].key;
+
+		ret = crypto_cipher_setkey(tfm, key, tf_tv[i].keylen);
+		if (ret) {
+			printk("setkey() failed flags=%x\n", tfm->crt_flags);
+			goto out;
+		}
+
+		p = tf_tv[i].plaintext;
+
+		sg[0].page = virt_to_page(p);
+		sg[0].offset = ((long) p & ~PAGE_MASK);
+		sg[0].length =  tf_tv[i].plen;
+
+		crypto_cipher_set_iv(tfm, tf_tv[i].iv,
+				     crypto_tfm_alg_ivsize(tfm));
+
+		ret = crypto_cipher_encrypt(tfm, sg, 1);
+		if (ret) {
+			printk("blowfish_cbc_encrypt() failed flags=%x\n",
+			       tfm->crt_flags);
+			goto out;
+		}
+
+		q = kmap(sg[0].page) + sg[0].offset;
+		hexdump(q, tf_tv[i].rlen);
+
+		printk("%s\n", memcmp(q, tf_tv[i].result, tf_tv[i].rlen)
+			? "fail" : "pass");
+	}
+
+	printk("\ntesting twofish cbc decryption\n");
+
+	tsize = sizeof (tf_cbc_dec_tv_template);
+	if (tsize > TVMEMSIZE) {
+		printk("template (%u) too big for tvmem (%u)\n", tsize,
+		       TVMEMSIZE);
+		goto out;
+	}
+	memcpy(tvmem, tf_cbc_dec_tv_template, tsize);
+	tf_tv = (void *) tvmem;
+
+	for (i = 0; i < TF_CBC_DEC_TEST_VECTORS; i++) {
+		printk("test %u (%d bit key):\n",
+			i + 1, tf_tv[i].keylen * 8);
+
+		key = tf_tv[i].key;
+
+		ret = crypto_cipher_setkey(tfm, key, tf_tv[i].keylen);
+		if (ret) {
+			printk("setkey() failed flags=%x\n", tfm->crt_flags);
+			goto out;
+		}
+
+		p = tf_tv[i].plaintext;
+
+		sg[0].page = virt_to_page(p);
+		sg[0].offset = ((long) p & ~PAGE_MASK);
+		sg[0].length =  tf_tv[i].plen;
+
+		crypto_cipher_set_iv(tfm, tf_tv[i].iv,
+				     crypto_tfm_alg_ivsize(tfm));
+
+		ret = crypto_cipher_decrypt(tfm, sg, 1);
+		if (ret) {
+			printk("blowfish_cbc_decrypt() failed flags=%x\n",
+			       tfm->crt_flags);
+			goto out;
+		}
+
+		q = kmap(sg[0].page) + sg[0].offset;
+		hexdump(q, tf_tv[i].rlen);
+
+		printk("%s\n", memcmp(q, tf_tv[i].result, tf_tv[i].rlen)
+			? "fail" : "pass");
+	}
+
+out:	
+	crypto_free_tfm(tfm);
+}
+
 static void
 test_available(void)
 {
@@ -1710,6 +1910,7 @@ do_test(void)
 		test_md4();
 		test_sha256();
 		test_blowfish();
+		test_twofish();
 #ifdef CONFIG_CRYPTO_HMAC
 		test_hmac_md5();
 		test_hmac_sha1();
@@ -1745,6 +1946,10 @@ do_test(void)
 		test_blowfish();
 		break;
 
+	case 8:
+		test_twofish();
+		break;
+
 #ifdef CONFIG_CRYPTO_HMAC
 	case 100:
 		test_hmac_md5();

crypto/tcrypt.h

@@ -1167,4 +1167,221 @@ struct bf_tv bf_cbc_dec_tv_template[] = {
 	},
 };
 
+/*
+ * Twofish test vectors.
+ */
+#define TF_ENC_TEST_VECTORS		3
+#define TF_DEC_TEST_VECTORS		3
+#define TF_CBC_ENC_TEST_VECTORS		4
+#define TF_CBC_DEC_TEST_VECTORS		4
+
+struct tf_tv {
+	unsigned int keylen;
+	unsigned int plen;
+	unsigned int rlen;
+	int fail;
+	char key[32];
+	char iv[16];
+	char plaintext[48];
+	char result[48];
+};
+
+struct tf_tv tf_enc_tv_template[] = {
+	{
+		16, 16, 16, 0,
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0 },
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0x9F, 0x58, 0x9F, 0x5C, 0xF6, 0x12, 0x2C, 0x32,
+		  0xB6, 0xBF, 0xEC, 0x2F, 0x2A, 0xE8, 0xC3, 0x5A }
+	},
+	{
+		24, 16, 16, 0,
+		{ 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF,
+		  0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10,
+		  0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77 },
+		{ 0 },
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0xCF, 0xD1, 0xD2, 0xE5, 0xA9, 0xBE, 0x9C, 0xDF,
+		  0x50, 0x1F, 0x13, 0xB8, 0x92, 0xBD, 0x22, 0x48 }
+	},
+	{	
+		32, 16, 16, 0,
+		{ 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF,
+		  0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10,
+		  0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
+		  0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF },
+		{ 0 },
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0x37, 0x52, 0x7B, 0xE0, 0x05, 0x23, 0x34, 0xB8,
+		  0x9F, 0x0C, 0xFC, 0xCA, 0xE8, 0x7C, 0xFA, 0x20 }
+	},
+};
+
+struct tf_tv tf_dec_tv_template[] = {
+	{
+		16, 16, 16, 0,
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0 },
+		{ 0x9F, 0x58, 0x9F, 0x5C, 0xF6, 0x12, 0x2C, 0x32,
+		  0xB6, 0xBF, 0xEC, 0x2F, 0x2A, 0xE8, 0xC3, 0x5A },
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },  
+	},
+	{
+		24, 16, 16, 0,
+		{ 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF,
+		  0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10,
+		  0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77 },
+		{ 0 },
+		{ 0xCF, 0xD1, 0xD2, 0xE5, 0xA9, 0xBE, 0x9C, 0xDF,
+		  0x50, 0x1F, 0x13, 0xB8, 0x92, 0xBD, 0x22, 0x48 },
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+	},
+	{	
+		32, 16, 16, 0,
+		{ 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF,
+		  0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10,
+		  0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
+		  0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF },
+		{ 0 },
+		{ 0x37, 0x52, 0x7B, 0xE0, 0x05, 0x23, 0x34, 0xB8,
+		  0x9F, 0x0C, 0xFC, 0xCA, 0xE8, 0x7C, 0xFA, 0x20 },
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+	},
+};
+
+struct tf_tv tf_cbc_enc_tv_template[] = {
+	/* Generated with Nettle */
+	{
+		16, 16, 16, 0,
+		
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0x9f, 0x58, 0x9f, 0x5c, 0xf6, 0x12, 0x2c, 0x32,
+		  0xb6, 0xbf, 0xec, 0x2f, 0x2a, 0xe8, 0xc3, 0x5a },
+	},
+	
+	{
+		16, 16, 16, 0,
+		
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0x9f, 0x58, 0x9f, 0x5c, 0xf6, 0x12, 0x2c, 0x32,
+		  0xb6, 0xbf, 0xec, 0x2f, 0x2a, 0xe8, 0xc3, 0x5a },
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0xd4, 0x91, 0xdb, 0x16, 0xe7, 0xb1, 0xc3, 0x9e,
+		  0x86, 0xcb, 0x08, 0x6b, 0x78, 0x9f, 0x54, 0x19 },
+	},
+	
+	{
+		16, 16, 16, 0,
+		
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0xd4, 0x91, 0xdb, 0x16, 0xe7, 0xb1, 0xc3, 0x9e,
+		  0x86, 0xcb, 0x08, 0x6b, 0x78, 0x9f, 0x54, 0x19 },
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0x05, 0xef, 0x8c, 0x61, 0xa8, 0x11, 0x58, 0x26,
+		  0x34, 0xba, 0x5c, 0xb7, 0x10, 0x6a, 0xa6, 0x41 },
+	},
+	
+	{
+		16, 48, 48, 0,
+		
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0x9f, 0x58, 0x9f, 0x5c, 0xf6, 0x12, 0x2c, 0x32,
+		  0xb6, 0xbf, 0xec, 0x2f, 0x2a, 0xe8, 0xc3, 0x5a,
+		  0xd4, 0x91, 0xdb, 0x16, 0xe7, 0xb1, 0xc3, 0x9e,
+		  0x86, 0xcb, 0x08, 0x6b, 0x78, 0x9f, 0x54, 0x19,
+		  0x05, 0xef, 0x8c, 0x61, 0xa8, 0x11, 0x58, 0x26,
+		  0x34, 0xba, 0x5c, 0xb7, 0x10, 0x6a, 0xa6, 0x41 },
+	},
+};
+
+struct tf_tv tf_cbc_dec_tv_template[] = {
+	/* Reverse of the first four above */
+	{
+		16, 16, 16, 0,
+		
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0x9f, 0x58, 0x9f, 0x5c, 0xf6, 0x12, 0x2c, 0x32,
+		  0xb6, 0xbf, 0xec, 0x2f, 0x2a, 0xe8, 0xc3, 0x5a },		  
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+	},
+	
+	{
+		16, 16, 16, 0,
+		
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0x9f, 0x58, 0x9f, 0x5c, 0xf6, 0x12, 0x2c, 0x32,
+		  0xb6, 0xbf, 0xec, 0x2f, 0x2a, 0xe8, 0xc3, 0x5a },
+		{ 0xd4, 0x91, 0xdb, 0x16, 0xe7, 0xb1, 0xc3, 0x9e,
+		  0x86, 0xcb, 0x08, 0x6b, 0x78, 0x9f, 0x54, 0x19 },
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },  
+	},
+	
+	{
+		16, 16, 16, 0,
+		
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0xd4, 0x91, 0xdb, 0x16, 0xe7, 0xb1, 0xc3, 0x9e,
+		  0x86, 0xcb, 0x08, 0x6b, 0x78, 0x9f, 0x54, 0x19 },
+		{ 0x05, 0xef, 0x8c, 0x61, 0xa8, 0x11, 0x58, 0x26,
+		  0x34, 0xba, 0x5c, 0xb7, 0x10, 0x6a, 0xa6, 0x41 },
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },  
+	},
+	
+	{
+		16, 48, 48, 0,
+		
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+		{ 0x9f, 0x58, 0x9f, 0x5c, 0xf6, 0x12, 0x2c, 0x32,
+		  0xb6, 0xbf, 0xec, 0x2f, 0x2a, 0xe8, 0xc3, 0x5a,
+		  0xd4, 0x91, 0xdb, 0x16, 0xe7, 0xb1, 0xc3, 0x9e,
+		  0x86, 0xcb, 0x08, 0x6b, 0x78, 0x9f, 0x54, 0x19,
+		  0x05, 0xef, 0x8c, 0x61, 0xa8, 0x11, 0x58, 0x26,
+		  0x34, 0xba, 0x5c, 0xb7, 0x10, 0x6a, 0xa6, 0x41 },
+		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+	},
+};
+
 #endif	/* _CRYPTO_TCRYPT_H */

include/linux/crypto.h

@@ -58,7 +58,6 @@
  */
 #define CRYPTO_UNSPEC			0
 #define CRYPTO_MAX_ALG_NAME		64
-#define CRYPTO_MAX_CIPHER_BLOCK_SIZE	16
 
 struct scatterlist;
 
@@ -135,6 +134,7 @@ struct cipher_tfm {
 	                   struct scatterlist *sg, unsigned int nsg);
 	int (*cit_decrypt)(struct crypto_tfm *tfm,
 	                   struct scatterlist *sg, unsigned int nsg);
+	void (*cit_xor_block)(u8 *dst, const u8 *src);
 };
 
 struct digest_tfm {

include/linux/mroute.h

@@ -126,6 +126,8 @@ struct igmpmsg
  */
 
 #ifdef __KERNEL__
+#include <net/sock.h>
+
 extern int ip_mroute_setsockopt(struct sock *, int, char *, int);
 extern int ip_mroute_getsockopt(struct sock *, int, char *, int *);
 extern int ipmr_ioctl(struct sock *sk, int cmd, unsigned long arg);

include/linux/netdevice.h

@@ -207,7 +207,8 @@ enum netdev_state_t
 	__LINK_STATE_PRESENT,
 	__LINK_STATE_SCHED,
 	__LINK_STATE_NOCARRIER,
-	__LINK_STATE_RX_SCHED
+	__LINK_STATE_RX_SCHED,
+	__LINK_STATE_LINKWATCH_PENDING
 };
 
 
@@ -631,6 +632,8 @@ static inline void dev_put(struct net_device *dev)
  * who is responsible for serialization of these calls.
  */
 
+extern void linkwatch_fire_event(struct net_device *dev);
+
 static inline int netif_carrier_ok(struct net_device *dev)
 {
 	return !test_bit(__LINK_STATE_NOCARRIER, &dev->state);
@@ -640,14 +643,16 @@ extern void __netdev_watchdog_up(struct net_device *dev);
 
 static inline void netif_carrier_on(struct net_device *dev)
 {
-	clear_bit(__LINK_STATE_NOCARRIER, &dev->state);
+	if (test_and_clear_bit(__LINK_STATE_NOCARRIER, &dev->state))
+		linkwatch_fire_event(dev);
 	if (netif_running(dev))
 		__netdev_watchdog_up(dev);
 }
 
 static inline void netif_carrier_off(struct net_device *dev)
 {
-	set_bit(__LINK_STATE_NOCARRIER, &dev->state);
+	if (!test_and_set_bit(__LINK_STATE_NOCARRIER, &dev->state))
+		linkwatch_fire_event(dev);
 }
 
 /* Hot-plugging. */

net/bridge/br_if.c

@@ -145,7 +145,7 @@ static struct net_bridge_port *new_nbp(struct net_bridge *br, struct net_device
 	int i;
 	struct net_bridge_port *p;
 
-	p = kmalloc(sizeof(*p), GFP_KERNEL);
+	p = kmalloc(sizeof(*p), GFP_ATOMIC);
 	if (p == NULL)
 		return p;
 

net/bridge/br_netfilter.c

@@ -4,7 +4,7 @@
  *
  *	Authors:
  *	Lennert Buytenhek               <buytenh@gnu.org>
- *	Bart De Schuymer		<bart.de.schuymer@pandora.be>
+ *	Bart De Schuymer		<bdschuym@pandora.be>
  *
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU General Public License
@@ -58,7 +58,7 @@ static struct rtable __fake_rtable = {
 			.__refcnt		= ATOMIC_INIT(1),
 			.dev			= &__fake_net_device,
 			.path			= &__fake_rtable.u.dst,
-			.metrics		= {[RTAX_MTU] = 1500},
+			.metrics		= {[RTAX_MTU - 1] = 1500},
 		}
 	},
 
@@ -328,10 +328,7 @@ static int br_nf_forward_finish(struct sk_buff *skb)
 /* This is the 'purely bridged' case.  We pass the packet to
  * netfilter with indev and outdev set to the bridge device,
  * but we are still able to filter on the 'real' indev/outdev
- * because another bit of the bridge-nf patch overloads the
- * '-i' and '-o' iptables interface checks to take
- * skb->phys{in,out}dev into account as well (so both the real
- * device and the bridge device will match).
+ * because of the ipt_physdev.c module.
  */
 static unsigned int br_nf_forward(unsigned int hook, struct sk_buff **pskb,
    const struct net_device *in, const struct net_device *out,
@@ -379,11 +376,10 @@ static int br_nf_local_out_finish(struct sk_buff *skb)
 /* This function sees both locally originated IP packets and forwarded
  * IP packets (in both cases the destination device is a bridge
  * device). It also sees bridged-and-DNAT'ed packets.
- * For the sake of interface transparency (i.e. properly
- * overloading the '-o' option), we steal packets destined to
- * a bridge device away from the PF_INET/FORWARD and PF_INET/OUTPUT hook
- * functions, and give them back later, when we have determined the real
- * output device. This is done in here.
+ * To be able to filter on the physical bridge devices (with the ipt_physdev.c
+ * module), we steal packets destined to a bridge device away from the
+ * PF_INET/FORWARD and PF_INET/OUTPUT hook functions, and give them back later,
+ * when we have determined the real output device. This is done in here.
  *
  * If (nf_bridge->mask & BRNF_BRIDGED_DNAT) then the packet is bridged
  * and we fake the PF_BRIDGE/FORWARD hook. The function br_nf_forward()

net/core/Makefile

@@ -12,7 +12,7 @@ endif
 
 obj-$(CONFIG_FILTER) += filter.o
 
-obj-$(CONFIG_NET) += dev.o dev_mcast.o dst.o neighbour.o rtnetlink.o utils.o
+obj-$(CONFIG_NET) += dev.o dev_mcast.o dst.o neighbour.o rtnetlink.o utils.o link_watch.o
 
 obj-$(CONFIG_NETFILTER) += netfilter.o
 obj-$(CONFIG_NET_DIVERT) += dv.o

net/core/dev.c

@@ -94,6 +94,7 @@
 #include <net/sock.h>
 #include <linux/rtnetlink.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/stat.h>
 #include <linux/if_bridge.h>
 #include <linux/divert.h>
@@ -114,6 +115,7 @@
 extern int plip_init(void);
 #endif
 
+#include <asm/current.h>
 
 /* This define, if set, will randomly drop a packet when congestion
  * is more than moderate.  It helps fairness in the multi-interface
@@ -262,6 +264,7 @@ void dev_add_pack(struct packet_type *pt)
 	br_write_unlock_bh(BR_NETPROTO_LOCK);
 }
 
+extern void linkwatch_run_queue(void);
 
 /**
  *	dev_remove_pack	 - remove packet handler
@@ -1719,128 +1722,196 @@ static int dev_ifconf(char *arg)
 	return copy_to_user(arg, &ifc, sizeof(struct ifconf)) ? -EFAULT : 0;
 }
 
+#ifdef CONFIG_PROC_FS
 /*
  *	This is invoked by the /proc filesystem handler to display a device
  *	in detail.
  */
+static __inline__ struct net_device *dev_get_idx(struct seq_file *seq,
+						 loff_t pos)
+{
+	struct net_device *dev;
+	loff_t i;
 
-#ifdef CONFIG_PROC_FS
+	for (i = 0, dev = dev_base; dev && i < pos; dev = dev->next);
+
+	return i == pos ? dev : NULL;
+}
 
-static int sprintf_stats(char *buffer, struct net_device *dev)
+void *dev_seq_start(struct seq_file *seq, loff_t *pos)
+{
+	read_lock(&dev_base_lock);
+	return *pos ? dev_get_idx(seq, *pos) : (void *)1;
+}
+
+void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	return v == (void *)1 ? dev_base : ((struct net_device *)v)->next;
+}
+
+void dev_seq_stop(struct seq_file *seq, void *v)
+{
+	read_unlock(&dev_base_lock);
+}
+
+static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev)
 {
 	struct net_device_stats *stats = dev->get_stats ? dev->get_stats(dev) :
 							  NULL;
-	int size;
-
 	if (stats)
-		size = sprintf(buffer, "%6s:%8lu %7lu %4lu %4lu %4lu %5lu "
-				       "%10lu %9lu %8lu %7lu %4lu %4lu %4lu "
-				       "%5lu %7lu %10lu\n",
- 		   dev->name,
-		   stats->rx_bytes,
-		   stats->rx_packets, stats->rx_errors,
+		seq_printf(seq, "%6s:%8lu %7lu %4lu %4lu %4lu %5lu %10lu %9lu "
+				"%8lu %7lu %4lu %4lu %4lu %5lu %7lu %10lu\n",
+			   dev->name, stats->rx_bytes, stats->rx_packets,
+			   stats->rx_errors,
 			   stats->rx_dropped + stats->rx_missed_errors,
 			   stats->rx_fifo_errors,
 			   stats->rx_length_errors + stats->rx_over_errors +
 			     stats->rx_crc_errors + stats->rx_frame_errors,
 			   stats->rx_compressed, stats->multicast,
-		   stats->tx_bytes,
-		   stats->tx_packets, stats->tx_errors, stats->tx_dropped,
+			   stats->tx_bytes, stats->tx_packets,
+			   stats->tx_errors, stats->tx_dropped,
 			   stats->tx_fifo_errors, stats->collisions,
-		   stats->tx_carrier_errors + stats->tx_aborted_errors +
-		   	stats->tx_window_errors + stats->tx_heartbeat_errors,
+			   stats->tx_carrier_errors +
+			     stats->tx_aborted_errors +
+			     stats->tx_window_errors +
+			     stats->tx_heartbeat_errors,
 			   stats->tx_compressed);
 	else
-		size = sprintf(buffer, "%6s: No statistics available.\n",
-			       dev->name);
-
-	return size;
+		seq_printf(seq, "%6s: No statistics available.\n", dev->name);
 }
 
 /*
  *	Called from the PROCfs module. This now uses the new arbitrary sized
  *	/proc/net interface to create /proc/net/dev
  */
-static int dev_get_info(char *buffer, char **start, off_t offset, int length)
+static int dev_seq_show(struct seq_file *seq, void *v)
 {
-	int len = 0;
-	off_t begin = 0;
-	off_t pos = 0;
-	int size;
-	struct net_device *dev;
+	if (v == (void *)1)
+		seq_printf(seq, "Inter-|   Receive                            "
+				"                    |  Transmit\n"
+				" face |bytes    packets errs drop fifo frame "
+				"compressed multicast|bytes    packets errs "
+				"drop fifo colls carrier compressed\n");
+	else
+		dev_seq_printf_stats(seq, v);
+	return 0;
+}
 
-	size = sprintf(buffer,
-		"Inter-|   Receive                                                |  Transmit\n"
-		" face |bytes    packets errs drop fifo frame compressed multicast|bytes    packets errs drop fifo colls carrier compressed\n");
+static struct netif_rx_stats *softnet_get_online(loff_t *pos)
+{
+	struct netif_rx_stats *rc = NULL;
 
-	pos += size;
-	len += size;
+	while (*pos < NR_CPUS)
+	       	if (cpu_online(*pos)) {
+			rc = &netdev_rx_stat[*pos];
+			break;
+		} else
+			++*pos;
+	return rc;
+}
 
-	read_lock(&dev_base_lock);
-	for (dev = dev_base; dev; dev = dev->next) {
-		size = sprintf_stats(buffer+len, dev);
-		len += size;
-		pos = begin + len;
+static void *softnet_seq_start(struct seq_file *seq, loff_t *pos)
+{
+	return softnet_get_online(pos);
+}
 
-		if (pos < offset) {
-			len = 0;
-			begin = pos;
-		}
-		if (pos > offset + length)
-			break;
-	}
-	read_unlock(&dev_base_lock);
+static void *softnet_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	++*pos;
+	return softnet_get_online(pos);
+}
 
-	*start = buffer + (offset - begin);	/* Start of wanted data */
-	len -= offset - begin;			/* Start slop */
-	if (len > length)
-		len = length;			/* Ending slop */
-	if (len < 0)
-		len = 0;
-	return len;
+static void softnet_seq_stop(struct seq_file *seq, void *v)
+{
 }
 
-static int dev_proc_stats(char *buffer, char **start, off_t offset,
-			  int length, int *eof, void *data)
+static int softnet_seq_show(struct seq_file *seq, void *v)
 {
-	int i;
-	int len = 0;
+	struct netif_rx_stats *s = v;
 
-	for (i = 0; i < NR_CPUS; i++) {
-		if (!cpu_online(i))
-			continue;
-
-		len += sprintf(buffer + len, "%08x %08x %08x %08x %08x %08x "
-					     "%08x %08x %08x\n",
-			       netdev_rx_stat[i].total,
-			       netdev_rx_stat[i].dropped,
-			       netdev_rx_stat[i].time_squeeze,
-			       netdev_rx_stat[i].throttled,
-			       netdev_rx_stat[i].fastroute_hit,
-			       netdev_rx_stat[i].fastroute_success,
-			       netdev_rx_stat[i].fastroute_defer,
-			       netdev_rx_stat[i].fastroute_deferred_out,
+	seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
+		   s->total, s->dropped, s->time_squeeze, s->throttled,
+		   s->fastroute_hit, s->fastroute_success, s->fastroute_defer,
+		   s->fastroute_deferred_out,
 #if 0
-			       netdev_rx_stat[i].fastroute_latency_reduction
+		   s->fastroute_latency_reduction
 #else
-			       netdev_rx_stat[i].cpu_collision
+		   s->cpu_collision
 #endif
 		  );
-	}
+	return 0;
+}
 
-	len -= offset;
+static struct seq_operations dev_seq_ops = {
+	.start = dev_seq_start,
+	.next  = dev_seq_next,
+	.stop  = dev_seq_stop,
+	.show  = dev_seq_show,
+};
 
-	if (len > length)
-		len = length;
-	if (len < 0)
-		len = 0;
+static int dev_seq_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &dev_seq_ops);
+}
 
-	*start = buffer + offset;
-	*eof = 1;
+static struct file_operations dev_seq_fops = {
+	.open    = dev_seq_open,
+	.read    = seq_read,
+	.llseek  = seq_lseek,
+	.release = seq_release,
+};
 
-	return len;
+static struct seq_operations softnet_seq_ops = {
+	.start = softnet_seq_start,
+	.next  = softnet_seq_next,
+	.stop  = softnet_seq_stop,
+	.show  = softnet_seq_show,
+};
+
+static int softnet_seq_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &softnet_seq_ops);
 }
 
+static struct file_operations softnet_seq_fops = {
+	.open    = softnet_seq_open,
+	.read    = seq_read,
+	.llseek  = seq_lseek,
+	.release = seq_release,
+};
+
+#ifdef WIRELESS_EXT
+extern int wireless_proc_init(void);
+#else
+#define wireless_proc_init() 0
+#endif
+
+static int __init dev_proc_init(void)
+{
+	struct proc_dir_entry *p;
+	int rc = -ENOMEM;
+
+	p = create_proc_entry("dev", S_IRUGO, proc_net);
+	if (!p)
+		goto out;
+	p->proc_fops = &dev_seq_fops;
+	p = create_proc_entry("softnet_stat", S_IRUGO, proc_net);
+	if (!p)
+		goto out_dev;
+	p->proc_fops = &softnet_seq_fops;
+	if (wireless_proc_init())
+		goto out_softnet;
+	rc = 0;
+out:
+	return rc;
+out_softnet:
+	remove_proc_entry("softnet_stat", proc_net);
+out_dev:
+	remove_proc_entry("dev", proc_net);
+	goto out;
+}
+#else
+#define dev_proc_init() 0
 #endif	/* CONFIG_PROC_FS */
 
 
@@ -2642,6 +2713,15 @@ int unregister_netdevice(struct net_device *dev)
 			/* Rebroadcast unregister notification */
 			notifier_call_chain(&netdev_chain,
 					    NETDEV_UNREGISTER, dev);
+
+			if (test_bit(__LINK_STATE_LINKWATCH_PENDING, &dev->state)) {
+				/* We must not have linkwatch events pending
+				 * on unregister. If this happens, we simply
+				 * run the queue unscheduled, resulting in a
+				 * noop for this device
+				 */
+				linkwatch_run_queue();
+			}
 		}
 		current->state = TASK_INTERRUPTIBLE;
 		schedule_timeout(HZ / 4);
@@ -2680,10 +2760,13 @@ extern void dv_init(void);
 static int __init net_dev_init(void)
 {
 	struct net_device *dev, **dp;
-	int i;
+	int i, rc = -ENOMEM;
 
 	BUG_ON(!dev_boot_phase);
 
+	if (dev_proc_init())
+		goto out;
+
 #ifdef CONFIG_NET_DIVERT
 	dv_init();
 #endif /* CONFIG_NET_DIVERT */
@@ -2787,15 +2870,6 @@ static int __init net_dev_init(void)
 		}
 	}
 
-#ifdef CONFIG_PROC_FS
-	proc_net_create("dev", 0, dev_get_info);
-	create_proc_read_entry("net/softnet_stat", 0, 0, dev_proc_stats, NULL);
-#ifdef WIRELESS_EXT
-	/* Available in net/core/wireless.c */
-	proc_net_create("wireless", 0, dev_get_wireless_info);
-#endif	/* WIRELESS_EXT */
-#endif	/* CONFIG_PROC_FS */
-
 	dev_boot_phase = 0;
 
 	open_softirq(NET_TX_SOFTIRQ, net_tx_action, NULL);
@@ -2812,8 +2886,9 @@ static int __init net_dev_init(void)
 	 */
 
 	net_device_init();
-
-	return 0;
+	rc = 0;
+out:
+	return rc;
 }
 
 subsys_initcall(net_dev_init);

net/core/link_watch.c

+/*
+ * Linux network device link state notifaction
+ *
+ * Author:
+ *     Stefan Rompf <sux@loplof.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ */
+
+#include <linux/workqueue.h>
+#include <linux/config.h>
+#include <linux/netdevice.h>
+#include <linux/if.h>
+#include <linux/rtnetlink.h>
+#include <linux/jiffies.h>
+#include <linux/spinlock.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <asm/bitops.h>
+#include <asm/types.h>
+
+
+enum lw_bits {
+	LW_RUNNING = 0,
+	LW_SE_USED
+};
+
+static unsigned long linkwatch_flags = 0;
+static unsigned long linkwatch_nextevent = 0;
+
+static void linkwatch_event(void *dummy);
+static DECLARE_WORK(linkwatch_work, linkwatch_event, NULL);
+
+static LIST_HEAD(lweventlist);
+static spinlock_t lweventlist_lock = SPIN_LOCK_UNLOCKED;
+
+struct lw_event {
+	struct list_head list;
+	struct net_device *dev;
+};
+
+/* Avoid kmalloc() for most systems */
+static struct lw_event singleevent;
+
+/* Must be called with the rtnl semaphore held */
+void linkwatch_run_queue(void) {
+	LIST_HEAD(head);
+	struct list_head *n, *next;
+
+	spin_lock_irq(&lweventlist_lock);
+	list_splice_init(&lweventlist, &head);
+	spin_unlock_irq(&lweventlist_lock);
+
+	list_for_each_safe(n, next, &head) {
+		struct lw_event *event = list_entry(n, struct lw_event, list);
+		struct net_device *dev = event->dev;
+
+		if (event == &singleevent) {
+			clear_bit(LW_SE_USED, &linkwatch_flags);
+		} else {
+			kfree(event);
+		}
+
+		/* We are about to handle this device,
+		 * so new events can be accepted
+		 */
+		clear_bit(__LINK_STATE_LINKWATCH_PENDING, &dev->state);
+
+		if (dev->flags & IFF_UP) {
+			netdev_state_change(dev);
+		}
+
+		dev_put(dev);
+	}
+}       
+
+
+static void linkwatch_event(void *dummy)
+{
+	/* Limit the number of linkwatch events to one
+	 * per second so that a runaway driver does not
+	 * cause a storm of messages on the netlink
+	 * socket
+	 */	
+	linkwatch_nextevent = jiffies + HZ;
+	clear_bit(LW_RUNNING, &linkwatch_flags);
+
+	rtnl_lock();
+	linkwatch_run_queue();
+	rtnl_unlock();
+}
+
+
+void linkwatch_fire_event(struct net_device *dev)
+{
+	if (!test_and_set_bit(__LINK_STATE_LINKWATCH_PENDING, &dev->state)) {
+		unsigned long flags;
+		struct lw_event *event;
+
+		if (test_and_set_bit(LW_SE_USED, &linkwatch_flags)) {
+			event = kmalloc(sizeof(struct lw_event), GFP_ATOMIC);
+
+			if (unlikely(event == NULL)) {
+				clear_bit(__LINK_STATE_LINKWATCH_PENDING, &dev->state);
+				return;
+			}
+		} else {
+			event = &singleevent;
+		}
+
+		dev_hold(dev);
+		event->dev = dev;
+
+		spin_lock_irqsave(&lweventlist_lock, flags);
+		list_add_tail(&event->list, &lweventlist);
+		spin_unlock_irqrestore(&lweventlist_lock, flags);
+
+		if (!test_and_set_bit(LW_RUNNING, &linkwatch_flags)) {
+			unsigned long thisevent = jiffies;
+
+			if (thisevent >= linkwatch_nextevent) {
+				schedule_work(&linkwatch_work);
+			} else {
+				schedule_delayed_work(&linkwatch_work, linkwatch_nextevent - thisevent);
+			}
+		}
+	}
+}
+

net/core/wireless.c

@@ -47,15 +47,18 @@
 
 /***************************** INCLUDES *****************************/
 
-#include <asm/uaccess.h>		/* copy_to_user() */
 #include <linux/config.h>		/* Not needed ??? */
 #include <linux/types.h>		/* off_t */
 #include <linux/netdevice.h>		/* struct ifreq, dev_get_by_name() */
+#include <linux/proc_fs.h>
 #include <linux/rtnetlink.h>		/* rtnetlink stuff */
-
+#include <linux/seq_file.h>
 #include <linux/wireless.h>		/* Pretty obvious */
+
 #include <net/iw_handler.h>		/* New driver API */
 
+#include <asm/uaccess.h>		/* copy_to_user() */
+
 /**************************** CONSTANTS ****************************/
 
 /* Enough lenience, let's make sure things are proper... */
@@ -330,83 +333,78 @@ static inline int get_priv_size(__u16	args)
 /*
  * Print one entry (line) of /proc/net/wireless
  */
-static inline int sprintf_wireless_stats(char *buffer, struct net_device *dev)
+static __inline__ void wireless_seq_printf_stats(struct seq_file *seq,
+						 struct net_device *dev)
 {
 	/* Get stats from the driver */
-	struct iw_statistics *stats;
-	int size;
+	struct iw_statistics *stats = get_wireless_stats(dev);
 
-	stats = get_wireless_stats(dev);
-	if (stats != (struct iw_statistics *) NULL) {
-		size = sprintf(buffer,
-			       "%6s: %04x  %3d%c  %3d%c  %3d%c  %6d %6d %6d %6d %6d   %6d\n",
-			       dev->name,
-			       stats->status,
-			       stats->qual.qual,
+	if (stats) {
+		seq_printf(seq, "%6s: %04x  %3d%c  %3d%c  %3d%c  %6d %6d %6d "
+				"%6d %6d   %6d\n",
+			   dev->name, stats->status, stats->qual.qual,
 			   stats->qual.updated & 1 ? '.' : ' ',
 			   ((__u8) stats->qual.level),
 			   stats->qual.updated & 2 ? '.' : ' ',
 			   ((__u8) stats->qual.noise),
 			   stats->qual.updated & 4 ? '.' : ' ',
-			       stats->discard.nwid,
-			       stats->discard.code,
-			       stats->discard.fragment,
-			       stats->discard.retries,
-			       stats->discard.misc,
-			       stats->miss.beacon);
+			   stats->discard.nwid, stats->discard.code,
+			   stats->discard.fragment, stats->discard.retries,
+			   stats->discard.misc, stats->miss.beacon);
 		stats->qual.updated = 0;
 	}
-	else
-		size = 0;
-
-	return size;
 }
 
 /* ---------------------------------------------------------------- */
 /*
  * Print info for /proc/net/wireless (print all entries)
  */
-int dev_get_wireless_info(char * buffer, char **start, off_t offset,
-			  int length)
+static int wireless_seq_show(struct seq_file *seq, void *v)
 {
-	int		len = 0;
-	off_t		begin = 0;
-	off_t		pos = 0;
-	int		size;
-	
-	struct net_device *	dev;
-
-	size = sprintf(buffer,
-		       "Inter-| sta-|   Quality        |   Discarded packets               | Missed\n"
-		       " face | tus | link level noise |  nwid  crypt   frag  retry   misc | beacon\n"
-			);
-	
-	pos += size;
-	len += size;
-
-	read_lock(&dev_base_lock);
-	for (dev = dev_base; dev != NULL; dev = dev->next) {
-		size = sprintf_wireless_stats(buffer + len, dev);
-		len += size;
-		pos = begin + len;
-
-		if (pos < offset) {
-			len = 0;
-			begin = pos;
-		}
-		if (pos > offset + length)
-			break;
-	}
-	read_unlock(&dev_base_lock);
+	if (v == (void *)1)
+		seq_printf(seq, "Inter-| sta-|   Quality        |   Discarded "
+				"packets               | Missed\n"
+				" face | tus | link level noise |  nwid  "
+				"crypt   frag  retry   misc | beacon\n");
+	else
+		wireless_seq_printf_stats(seq, v);
+	return 0;
+}
 
-	*start = buffer + (offset - begin);	/* Start of wanted data */
-	len -= (offset - begin);		/* Start slop */
-	if (len > length)
-		len = length;			/* Ending slop */
-	if (len < 0)
-		len = 0;
+extern void *dev_seq_start(struct seq_file *seq, loff_t *pos);
+extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos);
+extern void dev_seq_stop(struct seq_file *seq, void *v);
 
-	return len;
+static struct seq_operations wireless_seq_ops = {
+	.start = dev_seq_start,
+	.next  = dev_seq_next,
+	.stop  = dev_seq_stop,
+	.show  = wireless_seq_show,
+};
+
+static int wireless_seq_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &wireless_seq_ops);
+}
+
+static struct file_operations wireless_seq_fops = {
+	.open    = wireless_seq_open,
+	.read    = seq_read,
+	.llseek  = seq_lseek,
+	.release = seq_release,
+};
+
+int __init wireless_proc_init(void)
+{
+	struct proc_dir_entry *p;
+	int rc = 0;
+
+	p = create_proc_entry("wireless", S_IRUGO, proc_net);
+	if (p)
+		p->proc_fops = &wireless_seq_fops;
+	else
+		rc = -ENOMEM;
+	return rc;
 }
 #endif	/* CONFIG_PROC_FS */
 

net/ipv4/af_inet.c

@@ -103,8 +103,6 @@
 #include <net/tcp.h>
 #include <net/udp.h>
 #include <linux/skbuff.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
 #include <net/sock.h>
 #include <net/raw.h>
 #include <net/icmp.h>
@@ -1165,7 +1163,8 @@ extern void fib_proc_exit(void);
 extern int  ip_misc_proc_init(void);
 extern int  raw_proc_init(void);
 extern void raw_proc_exit(void);
-extern int  tcp_get_info(char *buffer, char **start, off_t offset, int length);
+extern int  tcp_proc_init(void);
+extern void tcp_proc_exit(void);
 extern int  udp_proc_init(void);
 extern void udp_proc_exit(void);
 
@@ -1175,7 +1174,7 @@ int __init ipv4_proc_init(void)
 
 	if (raw_proc_init())
 		goto out_raw;
-	if (!proc_net_create("tcp", 0, tcp_get_info))
+	if (tcp_proc_init())
 		goto out_tcp;
 	if (udp_proc_init())
 		goto out_udp;
@@ -1190,7 +1189,7 @@ int __init ipv4_proc_init(void)
 out_fib:
 	udp_proc_exit();
 out_udp:
-	proc_net_remove("tcp");
+	tcp_proc_exit();
 out_tcp:
 	raw_proc_exit();
 out_raw:

net/ipv4/arp.c

@@ -1282,7 +1282,7 @@ static void arp_seq_stop(struct seq_file *seq, void *v)
 {
 	struct arp_iter_state* state = seq->private;
 
-	if (!state->is_pneigh)
+	if (!state->is_pneigh && v != (void *)1)
 		read_unlock_bh(&arp_tbl.lock);
 }
 

net/ipv4/raw.c

@@ -55,6 +55,7 @@
 #include <linux/sockios.h>
 #include <linux/socket.h>
 #include <linux/in.h>
+#include <linux/mroute.h>
 #include <linux/netdevice.h>
 #include <linux/in_route.h>
 #include <linux/route.h>

net/netsyms.c

@@ -632,4 +632,6 @@ extern void wireless_send_event(struct net_device *dev, unsigned int cmd, union
 EXPORT_SYMBOL(wireless_send_event);
 #endif	/* CONFIG_NET_RADIO || CONFIG_NET_PCMCIA_RADIO */
 
+EXPORT_SYMBOL(linkwatch_fire_event);
+
 #endif  /* CONFIG_NET */