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Commit 49be834d authored by David S. Miller's avatar David S. Miller
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Merge nuts.ninka.net:/home/davem/src/BK/network-2.5 

into nuts.ninka.net:/home/davem/src/BK/net-2.5
parents 467578b9 33019ec1
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Showing with 1991 additions and 326 deletions
Documentation/crypto/api-intro.txt
View file @ 49be834d
...@@ -176,7 +176,7 @@ and; ...@@ -176,7 +176,7 @@ and;
Nettle (http://www.lysator.liu.se/~nisse/nettle/) Nettle (http://www.lysator.liu.se/~nisse/nettle/)
Niels Möller Niels Möller
Original developers of the initial set of crypto algorithms: Original developers of the crypto algorithms:
Dana L. How (DES) Dana L. How (DES)
Andrew Tridgell and Steve French (MD4) Andrew Tridgell and Steve French (MD4)
...@@ -184,17 +184,23 @@ Original developers of the initial set of crypto algorithms: ...@@ -184,17 +184,23 @@ Original developers of the initial set of crypto algorithms:
Steve Reid (SHA1) Steve Reid (SHA1)
Jean-Luc Cooke (SHA256) Jean-Luc Cooke (SHA256)
Kazunori Miyazawa / USAGI (HMAC) Kazunori Miyazawa / USAGI (HMAC)
Matthew Skala (Twofish)
The DES code was subsequently redeveloped by:
DES algorithm contributors:
Raimar Falke Raimar Falke
Gisle Sælensminde Gisle Sælensminde
Niels Möller Niels Möller
The Blowfish code was subsequently redeveloped by: Blowfish algorithm contributors:
Herbert Valerio Riedel Herbert Valerio Riedel
Kyle McMartin Kyle McMartin
Twofish algorithm contributors:
Werner Koch
Marc Mutz
SHA256 algorithm contributors:
Andrew McDonald
Please send any credits updates or corrections to: Please send any credits updates or corrections to:
James Morris <jmorris@intercode.com.au> James Morris <jmorris@intercode.com.au>
......
crypto/Kconfig
View file @ 49be834d
...@@ -68,6 +68,20 @@ config CRYPTO_BLOWFISH ...@@ -68,6 +68,20 @@ config CRYPTO_BLOWFISH
See also: See also:
http://www.counterpane.com/blowfish.html 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 config CRYPTO_TEST
tristate "Testing module" tristate "Testing module"
depends on CRYPTO depends on CRYPTO
......
crypto/Makefile
View file @ 49be834d
...@@ -16,6 +16,7 @@ obj-$(CONFIG_CRYPTO_SHA1) += sha1.o ...@@ -16,6 +16,7 @@ obj-$(CONFIG_CRYPTO_SHA1) += sha1.o
obj-$(CONFIG_CRYPTO_SHA256) += sha256.o obj-$(CONFIG_CRYPTO_SHA256) += sha256.o
obj-$(CONFIG_CRYPTO_DES) += des.o obj-$(CONFIG_CRYPTO_DES) += des.o
obj-$(CONFIG_CRYPTO_BLOWFISH) += blowfish.o obj-$(CONFIG_CRYPTO_BLOWFISH) += blowfish.o
obj-$(CONFIG_CRYPTO_TWOFISH) += twofish.o
obj-$(CONFIG_CRYPTO_TEST) += tcrypt.o obj-$(CONFIG_CRYPTO_TEST) += tcrypt.o
......
crypto/api.c
View file @ 49be834d
...@@ -187,13 +187,6 @@ void crypto_free_tfm(struct crypto_tfm *tfm) ...@@ -187,13 +187,6 @@ void crypto_free_tfm(struct crypto_tfm *tfm)
kfree(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 crypto_register_alg(struct crypto_alg *alg)
{ {
int ret = 0; int ret = 0;
...@@ -208,14 +201,7 @@ int crypto_register_alg(struct crypto_alg *alg) ...@@ -208,14 +201,7 @@ int crypto_register_alg(struct crypto_alg *alg)
} }
} }
if (crypto_alg_blocksize_check(alg)) { list_add_tail(&alg->cra_list, &crypto_alg_list);
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: out:
up_write(&crypto_alg_sem); up_write(&crypto_alg_sem);
return ret; return ret;
......
crypto/cipher.c
View file @ 49be834d
...@@ -29,6 +29,14 @@ static inline void xor_64(u8 *a, const u8 *b) ...@@ -29,6 +29,14 @@ static inline void xor_64(u8 *a, const u8 *b)
((u32 *)a)[1] ^= ((u32 *)b)[1]; ((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) static inline unsigned int sglen(struct scatterlist *sg, unsigned int nsg)
{ {
unsigned int i, n; unsigned int i, n;
...@@ -116,7 +124,7 @@ static int crypt(struct crypto_tfm *tfm, struct scatterlist *sg, ...@@ -116,7 +124,7 @@ static int crypt(struct crypto_tfm *tfm, struct scatterlist *sg,
{ {
unsigned int i, coff; unsigned int i, coff;
unsigned int bsize = crypto_tfm_alg_blocksize(tfm); unsigned int bsize = crypto_tfm_alg_blocksize(tfm);
u8 tmp[CRYPTO_MAX_CIPHER_BLOCK_SIZE]; u8 tmp[bsize];
if (sglen(sg, nsg) % bsize) { if (sglen(sg, nsg) % bsize) {
tfm->crt_flags |= CRYPTO_TFM_RES_BAD_BLOCK_LEN; tfm->crt_flags |= CRYPTO_TFM_RES_BAD_BLOCK_LEN;
...@@ -164,16 +172,20 @@ static int crypt(struct crypto_tfm *tfm, struct scatterlist *sg, ...@@ -164,16 +172,20 @@ static int crypt(struct crypto_tfm *tfm, struct scatterlist *sg,
static void cbc_process(struct crypto_tfm *tfm, static void cbc_process(struct crypto_tfm *tfm,
u8 *block, cryptfn_t fn, int enc) u8 *block, cryptfn_t fn, int enc)
{ {
/* Null encryption */
if (!tfm->crt_cipher.cit_iv)
return;
if (enc) { 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); fn(tfm->crt_ctx, block, tfm->crt_cipher.cit_iv);
memcpy(tfm->crt_cipher.cit_iv, block, memcpy(tfm->crt_cipher.cit_iv, block,
crypto_tfm_alg_blocksize(tfm)); crypto_tfm_alg_blocksize(tfm));
} else { } else {
u8 buf[CRYPTO_MAX_CIPHER_BLOCK_SIZE]; u8 buf[crypto_tfm_alg_blocksize(tfm)];
fn(tfm->crt_ctx, buf, block); 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, memcpy(tfm->crt_cipher.cit_iv, block,
crypto_tfm_alg_blocksize(tfm)); crypto_tfm_alg_blocksize(tfm));
memcpy(block, buf, 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) ...@@ -279,11 +291,29 @@ int crypto_init_cipher_ops(struct crypto_tfm *tfm)
if (alg->cra_cipher.cia_ivsize && if (alg->cra_cipher.cia_ivsize &&
ops->cit_mode != CRYPTO_TFM_MODE_ECB) { 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); ops->cit_iv = kmalloc(alg->cra_cipher.cia_ivsize, GFP_KERNEL);
if (ops->cit_iv == NULL) if (ops->cit_iv == NULL)
ret = -ENOMEM; ret = -ENOMEM;
} }
out:
return ret; return ret;
} }
......
crypto/tcrypt.c
View file @ 49be834d
...@@ -48,6 +48,7 @@ static char *tvmem; ...@@ -48,6 +48,7 @@ static char *tvmem;
static char *check[] = { static char *check[] = {
"des", "md5", "des3_ede", "rot13", "sha1", "sha256", "blowfish", "des", "md5", "des3_ede", "rot13", "sha1", "sha256", "blowfish",
"twofish",
NULL NULL
}; };
...@@ -333,15 +334,8 @@ test_hmac_sha256(void) ...@@ -333,15 +334,8 @@ test_hmac_sha256(void)
klen = strlen(hmac_sha256_tv[i].key); 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)); 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); crypto_hmac(tfm, hmac_sha256_tv[i].key, &klen, sg, 1, result);
//printk("H=");
hexdump(result, crypto_tfm_alg_digestsize(tfm)); hexdump(result, crypto_tfm_alg_digestsize(tfm));
printk("%s\n", printk("%s\n",
memcmp(result, hmac_sha256_tv[i].digest, memcmp(result, hmac_sha256_tv[i].digest,
...@@ -1616,7 +1610,7 @@ test_blowfish(void) ...@@ -1616,7 +1610,7 @@ test_blowfish(void)
sg[0].page = virt_to_page(p); sg[0].page = virt_to_page(p);
sg[0].offset = ((long) p & ~PAGE_MASK); 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_cipher_set_iv(tfm, bf_tv[i].iv,
crypto_tfm_alg_ivsize(tfm)); crypto_tfm_alg_ivsize(tfm));
...@@ -1661,7 +1655,7 @@ test_blowfish(void) ...@@ -1661,7 +1655,7 @@ test_blowfish(void)
sg[0].page = virt_to_page(p); sg[0].page = virt_to_page(p);
sg[0].offset = ((long) p & ~PAGE_MASK); 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_cipher_set_iv(tfm, bf_tv[i].iv,
crypto_tfm_alg_ivsize(tfm)); crypto_tfm_alg_ivsize(tfm));
...@@ -1684,6 +1678,212 @@ test_blowfish(void) ...@@ -1684,6 +1678,212 @@ test_blowfish(void)
crypto_free_tfm(tfm); 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 static void
test_available(void) test_available(void)
{ {
...@@ -1710,6 +1910,7 @@ do_test(void) ...@@ -1710,6 +1910,7 @@ do_test(void)
test_md4(); test_md4();
test_sha256(); test_sha256();
test_blowfish(); test_blowfish();
test_twofish();
#ifdef CONFIG_CRYPTO_HMAC #ifdef CONFIG_CRYPTO_HMAC
test_hmac_md5(); test_hmac_md5();
test_hmac_sha1(); test_hmac_sha1();
...@@ -1745,6 +1946,10 @@ do_test(void) ...@@ -1745,6 +1946,10 @@ do_test(void)
test_blowfish(); test_blowfish();
break; break;
case 8:
test_twofish();
break;
#ifdef CONFIG_CRYPTO_HMAC #ifdef CONFIG_CRYPTO_HMAC
case 100: case 100:
test_hmac_md5(); test_hmac_md5();
......
crypto/tcrypt.h
View file @ 49be834d
...@@ -1167,4 +1167,221 @@ struct bf_tv bf_cbc_dec_tv_template[] = { ...@@ -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 */ #endif /* _CRYPTO_TCRYPT_H */
crypto/twofish.c 0 → 100644
View file @ 49be834d
/*
* Twofish for CryptoAPI
*
* Originaly Twofish for GPG
* By Matthew Skala <mskala@ansuz.sooke.bc.ca>, July 26, 1998
* 256-bit key length added March 20, 1999
* Some modifications to reduce the text size by Werner Koch, April, 1998
* Ported to the kerneli patch by Marc Mutz <Marc@Mutz.com>
* Ported to CryptoAPI by Colin Slater <hoho@tacomeat.net>
*
* The original author has disclaimed all copyright interest in this
* code and thus put it in the public domain. The subsequent authors
* have put this under the GNU General Public License.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
* This code is a "clean room" implementation, written from the paper
* _Twofish: A 128-Bit Block Cipher_ by Bruce Schneier, John Kelsey,
* Doug Whiting, David Wagner, Chris Hall, and Niels Ferguson, available
* through http://www.counterpane.com/twofish.html
*
* For background information on multiplication in finite fields, used for
* the matrix operations in the key schedule, see the book _Contemporary
* Abstract Algebra_ by Joseph A. Gallian, especially chapter 22 in the
* Third Edition.
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/crypto.h>
/* The large precomputed tables for the Twofish cipher (twofish.c)
* Taken from the same source as twofish.c
* Marc Mutz <Marc@Mutz.com>
*/
/* These two tables are the q0 and q1 permutations, exactly as described in
* the Twofish paper. */
static const u8 q0[256] = {
0xA9, 0x67, 0xB3, 0xE8, 0x04, 0xFD, 0xA3, 0x76, 0x9A, 0x92, 0x80, 0x78,
0xE4, 0xDD, 0xD1, 0x38, 0x0D, 0xC6, 0x35, 0x98, 0x18, 0xF7, 0xEC, 0x6C,
0x43, 0x75, 0x37, 0x26, 0xFA, 0x13, 0x94, 0x48, 0xF2, 0xD0, 0x8B, 0x30,
0x84, 0x54, 0xDF, 0x23, 0x19, 0x5B, 0x3D, 0x59, 0xF3, 0xAE, 0xA2, 0x82,
0x63, 0x01, 0x83, 0x2E, 0xD9, 0x51, 0x9B, 0x7C, 0xA6, 0xEB, 0xA5, 0xBE,
0x16, 0x0C, 0xE3, 0x61, 0xC0, 0x8C, 0x3A, 0xF5, 0x73, 0x2C, 0x25, 0x0B,
0xBB, 0x4E, 0x89, 0x6B, 0x53, 0x6A, 0xB4, 0xF1, 0xE1, 0xE6, 0xBD, 0x45,
0xE2, 0xF4, 0xB6, 0x66, 0xCC, 0x95, 0x03, 0x56, 0xD4, 0x1C, 0x1E, 0xD7,
0xFB, 0xC3, 0x8E, 0xB5, 0xE9, 0xCF, 0xBF, 0xBA, 0xEA, 0x77, 0x39, 0xAF,
0x33, 0xC9, 0x62, 0x71, 0x81, 0x79, 0x09, 0xAD, 0x24, 0xCD, 0xF9, 0xD8,
0xE5, 0xC5, 0xB9, 0x4D, 0x44, 0x08, 0x86, 0xE7, 0xA1, 0x1D, 0xAA, 0xED,
0x06, 0x70, 0xB2, 0xD2, 0x41, 0x7B, 0xA0, 0x11, 0x31, 0xC2, 0x27, 0x90,
0x20, 0xF6, 0x60, 0xFF, 0x96, 0x5C, 0xB1, 0xAB, 0x9E, 0x9C, 0x52, 0x1B,
0x5F, 0x93, 0x0A, 0xEF, 0x91, 0x85, 0x49, 0xEE, 0x2D, 0x4F, 0x8F, 0x3B,
0x47, 0x87, 0x6D, 0x46, 0xD6, 0x3E, 0x69, 0x64, 0x2A, 0xCE, 0xCB, 0x2F,
0xFC, 0x97, 0x05, 0x7A, 0xAC, 0x7F, 0xD5, 0x1A, 0x4B, 0x0E, 0xA7, 0x5A,
0x28, 0x14, 0x3F, 0x29, 0x88, 0x3C, 0x4C, 0x02, 0xB8, 0xDA, 0xB0, 0x17,
0x55, 0x1F, 0x8A, 0x7D, 0x57, 0xC7, 0x8D, 0x74, 0xB7, 0xC4, 0x9F, 0x72,
0x7E, 0x15, 0x22, 0x12, 0x58, 0x07, 0x99, 0x34, 0x6E, 0x50, 0xDE, 0x68,
0x65, 0xBC, 0xDB, 0xF8, 0xC8, 0xA8, 0x2B, 0x40, 0xDC, 0xFE, 0x32, 0xA4,
0xCA, 0x10, 0x21, 0xF0, 0xD3, 0x5D, 0x0F, 0x00, 0x6F, 0x9D, 0x36, 0x42,
0x4A, 0x5E, 0xC1, 0xE0
};
static const u8 q1[256] = {
0x75, 0xF3, 0xC6, 0xF4, 0xDB, 0x7B, 0xFB, 0xC8, 0x4A, 0xD3, 0xE6, 0x6B,
0x45, 0x7D, 0xE8, 0x4B, 0xD6, 0x32, 0xD8, 0xFD, 0x37, 0x71, 0xF1, 0xE1,
0x30, 0x0F, 0xF8, 0x1B, 0x87, 0xFA, 0x06, 0x3F, 0x5E, 0xBA, 0xAE, 0x5B,
0x8A, 0x00, 0xBC, 0x9D, 0x6D, 0xC1, 0xB1, 0x0E, 0x80, 0x5D, 0xD2, 0xD5,
0xA0, 0x84, 0x07, 0x14, 0xB5, 0x90, 0x2C, 0xA3, 0xB2, 0x73, 0x4C, 0x54,
0x92, 0x74, 0x36, 0x51, 0x38, 0xB0, 0xBD, 0x5A, 0xFC, 0x60, 0x62, 0x96,
0x6C, 0x42, 0xF7, 0x10, 0x7C, 0x28, 0x27, 0x8C, 0x13, 0x95, 0x9C, 0xC7,
0x24, 0x46, 0x3B, 0x70, 0xCA, 0xE3, 0x85, 0xCB, 0x11, 0xD0, 0x93, 0xB8,
0xA6, 0x83, 0x20, 0xFF, 0x9F, 0x77, 0xC3, 0xCC, 0x03, 0x6F, 0x08, 0xBF,
0x40, 0xE7, 0x2B, 0xE2, 0x79, 0x0C, 0xAA, 0x82, 0x41, 0x3A, 0xEA, 0xB9,
0xE4, 0x9A, 0xA4, 0x97, 0x7E, 0xDA, 0x7A, 0x17, 0x66, 0x94, 0xA1, 0x1D,
0x3D, 0xF0, 0xDE, 0xB3, 0x0B, 0x72, 0xA7, 0x1C, 0xEF, 0xD1, 0x53, 0x3E,
0x8F, 0x33, 0x26, 0x5F, 0xEC, 0x76, 0x2A, 0x49, 0x81, 0x88, 0xEE, 0x21,
0xC4, 0x1A, 0xEB, 0xD9, 0xC5, 0x39, 0x99, 0xCD, 0xAD, 0x31, 0x8B, 0x01,
0x18, 0x23, 0xDD, 0x1F, 0x4E, 0x2D, 0xF9, 0x48, 0x4F, 0xF2, 0x65, 0x8E,
0x78, 0x5C, 0x58, 0x19, 0x8D, 0xE5, 0x98, 0x57, 0x67, 0x7F, 0x05, 0x64,
0xAF, 0x63, 0xB6, 0xFE, 0xF5, 0xB7, 0x3C, 0xA5, 0xCE, 0xE9, 0x68, 0x44,
0xE0, 0x4D, 0x43, 0x69, 0x29, 0x2E, 0xAC, 0x15, 0x59, 0xA8, 0x0A, 0x9E,
0x6E, 0x47, 0xDF, 0x34, 0x35, 0x6A, 0xCF, 0xDC, 0x22, 0xC9, 0xC0, 0x9B,
0x89, 0xD4, 0xED, 0xAB, 0x12, 0xA2, 0x0D, 0x52, 0xBB, 0x02, 0x2F, 0xA9,
0xD7, 0x61, 0x1E, 0xB4, 0x50, 0x04, 0xF6, 0xC2, 0x16, 0x25, 0x86, 0x56,
0x55, 0x09, 0xBE, 0x91
};
/* These MDS tables are actually tables of MDS composed with q0 and q1,
* because it is only ever used that way and we can save some time by
* precomputing. Of course the main saving comes from precomputing the
* GF(2^8) multiplication involved in the MDS matrix multiply; by looking
* things up in these tables we reduce the matrix multiply to four lookups
* and three XORs. Semi-formally, the definition of these tables is:
* mds[0][i] = MDS (q1[i] 0 0 0)^T mds[1][i] = MDS (0 q0[i] 0 0)^T
* mds[2][i] = MDS (0 0 q1[i] 0)^T mds[3][i] = MDS (0 0 0 q0[i])^T
* where ^T means "transpose", the matrix multiply is performed in GF(2^8)
* represented as GF(2)[x]/v(x) where v(x)=x^8+x^6+x^5+x^3+1 as described
* by Schneier et al, and I'm casually glossing over the byte/word
* conversion issues. */
static const u32 mds[4][256] = {
{0xBCBC3275, 0xECEC21F3, 0x202043C6, 0xB3B3C9F4, 0xDADA03DB, 0x02028B7B,
0xE2E22BFB, 0x9E9EFAC8, 0xC9C9EC4A, 0xD4D409D3, 0x18186BE6, 0x1E1E9F6B,
0x98980E45, 0xB2B2387D, 0xA6A6D2E8, 0x2626B74B, 0x3C3C57D6, 0x93938A32,
0x8282EED8, 0x525298FD, 0x7B7BD437, 0xBBBB3771, 0x5B5B97F1, 0x474783E1,
0x24243C30, 0x5151E20F, 0xBABAC6F8, 0x4A4AF31B, 0xBFBF4887, 0x0D0D70FA,
0xB0B0B306, 0x7575DE3F, 0xD2D2FD5E, 0x7D7D20BA, 0x666631AE, 0x3A3AA35B,
0x59591C8A, 0x00000000, 0xCDCD93BC, 0x1A1AE09D, 0xAEAE2C6D, 0x7F7FABC1,
0x2B2BC7B1, 0xBEBEB90E, 0xE0E0A080, 0x8A8A105D, 0x3B3B52D2, 0x6464BAD5,
0xD8D888A0, 0xE7E7A584, 0x5F5FE807, 0x1B1B1114, 0x2C2CC2B5, 0xFCFCB490,
0x3131272C, 0x808065A3, 0x73732AB2, 0x0C0C8173, 0x79795F4C, 0x6B6B4154,
0x4B4B0292, 0x53536974, 0x94948F36, 0x83831F51, 0x2A2A3638, 0xC4C49CB0,
0x2222C8BD, 0xD5D5F85A, 0xBDBDC3FC, 0x48487860, 0xFFFFCE62, 0x4C4C0796,
0x4141776C, 0xC7C7E642, 0xEBEB24F7, 0x1C1C1410, 0x5D5D637C, 0x36362228,
0x6767C027, 0xE9E9AF8C, 0x4444F913, 0x1414EA95, 0xF5F5BB9C, 0xCFCF18C7,
0x3F3F2D24, 0xC0C0E346, 0x7272DB3B, 0x54546C70, 0x29294CCA, 0xF0F035E3,
0x0808FE85, 0xC6C617CB, 0xF3F34F11, 0x8C8CE4D0, 0xA4A45993, 0xCACA96B8,
0x68683BA6, 0xB8B84D83, 0x38382820, 0xE5E52EFF, 0xADAD569F, 0x0B0B8477,
0xC8C81DC3, 0x9999FFCC, 0x5858ED03, 0x19199A6F, 0x0E0E0A08, 0x95957EBF,
0x70705040, 0xF7F730E7, 0x6E6ECF2B, 0x1F1F6EE2, 0xB5B53D79, 0x09090F0C,
0x616134AA, 0x57571682, 0x9F9F0B41, 0x9D9D803A, 0x111164EA, 0x2525CDB9,
0xAFAFDDE4, 0x4545089A, 0xDFDF8DA4, 0xA3A35C97, 0xEAEAD57E, 0x353558DA,
0xEDEDD07A, 0x4343FC17, 0xF8F8CB66, 0xFBFBB194, 0x3737D3A1, 0xFAFA401D,
0xC2C2683D, 0xB4B4CCF0, 0x32325DDE, 0x9C9C71B3, 0x5656E70B, 0xE3E3DA72,
0x878760A7, 0x15151B1C, 0xF9F93AEF, 0x6363BFD1, 0x3434A953, 0x9A9A853E,
0xB1B1428F, 0x7C7CD133, 0x88889B26, 0x3D3DA65F, 0xA1A1D7EC, 0xE4E4DF76,
0x8181942A, 0x91910149, 0x0F0FFB81, 0xEEEEAA88, 0x161661EE, 0xD7D77321,
0x9797F5C4, 0xA5A5A81A, 0xFEFE3FEB, 0x6D6DB5D9, 0x7878AEC5, 0xC5C56D39,
0x1D1DE599, 0x7676A4CD, 0x3E3EDCAD, 0xCBCB6731, 0xB6B6478B, 0xEFEF5B01,
0x12121E18, 0x6060C523, 0x6A6AB0DD, 0x4D4DF61F, 0xCECEE94E, 0xDEDE7C2D,
0x55559DF9, 0x7E7E5A48, 0x2121B24F, 0x03037AF2, 0xA0A02665, 0x5E5E198E,
0x5A5A6678, 0x65654B5C, 0x62624E58, 0xFDFD4519, 0x0606F48D, 0x404086E5,
0xF2F2BE98, 0x3333AC57, 0x17179067, 0x05058E7F, 0xE8E85E05, 0x4F4F7D64,
0x89896AAF, 0x10109563, 0x74742FB6, 0x0A0A75FE, 0x5C5C92F5, 0x9B9B74B7,
0x2D2D333C, 0x3030D6A5, 0x2E2E49CE, 0x494989E9, 0x46467268, 0x77775544,
0xA8A8D8E0, 0x9696044D, 0x2828BD43, 0xA9A92969, 0xD9D97929, 0x8686912E,
0xD1D187AC, 0xF4F44A15, 0x8D8D1559, 0xD6D682A8, 0xB9B9BC0A, 0x42420D9E,
0xF6F6C16E, 0x2F2FB847, 0xDDDD06DF, 0x23233934, 0xCCCC6235, 0xF1F1C46A,
0xC1C112CF, 0x8585EBDC, 0x8F8F9E22, 0x7171A1C9, 0x9090F0C0, 0xAAAA539B,
0x0101F189, 0x8B8BE1D4, 0x4E4E8CED, 0x8E8E6FAB, 0xABABA212, 0x6F6F3EA2,
0xE6E6540D, 0xDBDBF252, 0x92927BBB, 0xB7B7B602, 0x6969CA2F, 0x3939D9A9,
0xD3D30CD7, 0xA7A72361, 0xA2A2AD1E, 0xC3C399B4, 0x6C6C4450, 0x07070504,
0x04047FF6, 0x272746C2, 0xACACA716, 0xD0D07625, 0x50501386, 0xDCDCF756,
0x84841A55, 0xE1E15109, 0x7A7A25BE, 0x1313EF91},
{0xA9D93939, 0x67901717, 0xB3719C9C, 0xE8D2A6A6, 0x04050707, 0xFD985252,
0xA3658080, 0x76DFE4E4, 0x9A084545, 0x92024B4B, 0x80A0E0E0, 0x78665A5A,
0xE4DDAFAF, 0xDDB06A6A, 0xD1BF6363, 0x38362A2A, 0x0D54E6E6, 0xC6432020,
0x3562CCCC, 0x98BEF2F2, 0x181E1212, 0xF724EBEB, 0xECD7A1A1, 0x6C774141,
0x43BD2828, 0x7532BCBC, 0x37D47B7B, 0x269B8888, 0xFA700D0D, 0x13F94444,
0x94B1FBFB, 0x485A7E7E, 0xF27A0303, 0xD0E48C8C, 0x8B47B6B6, 0x303C2424,
0x84A5E7E7, 0x54416B6B, 0xDF06DDDD, 0x23C56060, 0x1945FDFD, 0x5BA33A3A,
0x3D68C2C2, 0x59158D8D, 0xF321ECEC, 0xAE316666, 0xA23E6F6F, 0x82165757,
0x63951010, 0x015BEFEF, 0x834DB8B8, 0x2E918686, 0xD9B56D6D, 0x511F8383,
0x9B53AAAA, 0x7C635D5D, 0xA63B6868, 0xEB3FFEFE, 0xA5D63030, 0xBE257A7A,
0x16A7ACAC, 0x0C0F0909, 0xE335F0F0, 0x6123A7A7, 0xC0F09090, 0x8CAFE9E9,
0x3A809D9D, 0xF5925C5C, 0x73810C0C, 0x2C273131, 0x2576D0D0, 0x0BE75656,
0xBB7B9292, 0x4EE9CECE, 0x89F10101, 0x6B9F1E1E, 0x53A93434, 0x6AC4F1F1,
0xB499C3C3, 0xF1975B5B, 0xE1834747, 0xE66B1818, 0xBDC82222, 0x450E9898,
0xE26E1F1F, 0xF4C9B3B3, 0xB62F7474, 0x66CBF8F8, 0xCCFF9999, 0x95EA1414,
0x03ED5858, 0x56F7DCDC, 0xD4E18B8B, 0x1C1B1515, 0x1EADA2A2, 0xD70CD3D3,
0xFB2BE2E2, 0xC31DC8C8, 0x8E195E5E, 0xB5C22C2C, 0xE9894949, 0xCF12C1C1,
0xBF7E9595, 0xBA207D7D, 0xEA641111, 0x77840B0B, 0x396DC5C5, 0xAF6A8989,
0x33D17C7C, 0xC9A17171, 0x62CEFFFF, 0x7137BBBB, 0x81FB0F0F, 0x793DB5B5,
0x0951E1E1, 0xADDC3E3E, 0x242D3F3F, 0xCDA47676, 0xF99D5555, 0xD8EE8282,
0xE5864040, 0xC5AE7878, 0xB9CD2525, 0x4D049696, 0x44557777, 0x080A0E0E,
0x86135050, 0xE730F7F7, 0xA1D33737, 0x1D40FAFA, 0xAA346161, 0xED8C4E4E,
0x06B3B0B0, 0x706C5454, 0xB22A7373, 0xD2523B3B, 0x410B9F9F, 0x7B8B0202,
0xA088D8D8, 0x114FF3F3, 0x3167CBCB, 0xC2462727, 0x27C06767, 0x90B4FCFC,
0x20283838, 0xF67F0404, 0x60784848, 0xFF2EE5E5, 0x96074C4C, 0x5C4B6565,
0xB1C72B2B, 0xAB6F8E8E, 0x9E0D4242, 0x9CBBF5F5, 0x52F2DBDB, 0x1BF34A4A,
0x5FA63D3D, 0x9359A4A4, 0x0ABCB9B9, 0xEF3AF9F9, 0x91EF1313, 0x85FE0808,
0x49019191, 0xEE611616, 0x2D7CDEDE, 0x4FB22121, 0x8F42B1B1, 0x3BDB7272,
0x47B82F2F, 0x8748BFBF, 0x6D2CAEAE, 0x46E3C0C0, 0xD6573C3C, 0x3E859A9A,
0x6929A9A9, 0x647D4F4F, 0x2A948181, 0xCE492E2E, 0xCB17C6C6, 0x2FCA6969,
0xFCC3BDBD, 0x975CA3A3, 0x055EE8E8, 0x7AD0EDED, 0xAC87D1D1, 0x7F8E0505,
0xD5BA6464, 0x1AA8A5A5, 0x4BB72626, 0x0EB9BEBE, 0xA7608787, 0x5AF8D5D5,
0x28223636, 0x14111B1B, 0x3FDE7575, 0x2979D9D9, 0x88AAEEEE, 0x3C332D2D,
0x4C5F7979, 0x02B6B7B7, 0xB896CACA, 0xDA583535, 0xB09CC4C4, 0x17FC4343,
0x551A8484, 0x1FF64D4D, 0x8A1C5959, 0x7D38B2B2, 0x57AC3333, 0xC718CFCF,
0x8DF40606, 0x74695353, 0xB7749B9B, 0xC4F59797, 0x9F56ADAD, 0x72DAE3E3,
0x7ED5EAEA, 0x154AF4F4, 0x229E8F8F, 0x12A2ABAB, 0x584E6262, 0x07E85F5F,
0x99E51D1D, 0x34392323, 0x6EC1F6F6, 0x50446C6C, 0xDE5D3232, 0x68724646,
0x6526A0A0, 0xBC93CDCD, 0xDB03DADA, 0xF8C6BABA, 0xC8FA9E9E, 0xA882D6D6,
0x2BCF6E6E, 0x40507070, 0xDCEB8585, 0xFE750A0A, 0x328A9393, 0xA48DDFDF,
0xCA4C2929, 0x10141C1C, 0x2173D7D7, 0xF0CCB4B4, 0xD309D4D4, 0x5D108A8A,
0x0FE25151, 0x00000000, 0x6F9A1919, 0x9DE01A1A, 0x368F9494, 0x42E6C7C7,
0x4AECC9C9, 0x5EFDD2D2, 0xC1AB7F7F, 0xE0D8A8A8},
{0xBC75BC32, 0xECF3EC21, 0x20C62043, 0xB3F4B3C9, 0xDADBDA03, 0x027B028B,
0xE2FBE22B, 0x9EC89EFA, 0xC94AC9EC, 0xD4D3D409, 0x18E6186B, 0x1E6B1E9F,
0x9845980E, 0xB27DB238, 0xA6E8A6D2, 0x264B26B7, 0x3CD63C57, 0x9332938A,
0x82D882EE, 0x52FD5298, 0x7B377BD4, 0xBB71BB37, 0x5BF15B97, 0x47E14783,
0x2430243C, 0x510F51E2, 0xBAF8BAC6, 0x4A1B4AF3, 0xBF87BF48, 0x0DFA0D70,
0xB006B0B3, 0x753F75DE, 0xD25ED2FD, 0x7DBA7D20, 0x66AE6631, 0x3A5B3AA3,
0x598A591C, 0x00000000, 0xCDBCCD93, 0x1A9D1AE0, 0xAE6DAE2C, 0x7FC17FAB,
0x2BB12BC7, 0xBE0EBEB9, 0xE080E0A0, 0x8A5D8A10, 0x3BD23B52, 0x64D564BA,
0xD8A0D888, 0xE784E7A5, 0x5F075FE8, 0x1B141B11, 0x2CB52CC2, 0xFC90FCB4,
0x312C3127, 0x80A38065, 0x73B2732A, 0x0C730C81, 0x794C795F, 0x6B546B41,
0x4B924B02, 0x53745369, 0x9436948F, 0x8351831F, 0x2A382A36, 0xC4B0C49C,
0x22BD22C8, 0xD55AD5F8, 0xBDFCBDC3, 0x48604878, 0xFF62FFCE, 0x4C964C07,
0x416C4177, 0xC742C7E6, 0xEBF7EB24, 0x1C101C14, 0x5D7C5D63, 0x36283622,
0x672767C0, 0xE98CE9AF, 0x441344F9, 0x149514EA, 0xF59CF5BB, 0xCFC7CF18,
0x3F243F2D, 0xC046C0E3, 0x723B72DB, 0x5470546C, 0x29CA294C, 0xF0E3F035,
0x088508FE, 0xC6CBC617, 0xF311F34F, 0x8CD08CE4, 0xA493A459, 0xCAB8CA96,
0x68A6683B, 0xB883B84D, 0x38203828, 0xE5FFE52E, 0xAD9FAD56, 0x0B770B84,
0xC8C3C81D, 0x99CC99FF, 0x580358ED, 0x196F199A, 0x0E080E0A, 0x95BF957E,
0x70407050, 0xF7E7F730, 0x6E2B6ECF, 0x1FE21F6E, 0xB579B53D, 0x090C090F,
0x61AA6134, 0x57825716, 0x9F419F0B, 0x9D3A9D80, 0x11EA1164, 0x25B925CD,
0xAFE4AFDD, 0x459A4508, 0xDFA4DF8D, 0xA397A35C, 0xEA7EEAD5, 0x35DA3558,
0xED7AEDD0, 0x431743FC, 0xF866F8CB, 0xFB94FBB1, 0x37A137D3, 0xFA1DFA40,
0xC23DC268, 0xB4F0B4CC, 0x32DE325D, 0x9CB39C71, 0x560B56E7, 0xE372E3DA,
0x87A78760, 0x151C151B, 0xF9EFF93A, 0x63D163BF, 0x345334A9, 0x9A3E9A85,
0xB18FB142, 0x7C337CD1, 0x8826889B, 0x3D5F3DA6, 0xA1ECA1D7, 0xE476E4DF,
0x812A8194, 0x91499101, 0x0F810FFB, 0xEE88EEAA, 0x16EE1661, 0xD721D773,
0x97C497F5, 0xA51AA5A8, 0xFEEBFE3F, 0x6DD96DB5, 0x78C578AE, 0xC539C56D,
0x1D991DE5, 0x76CD76A4, 0x3EAD3EDC, 0xCB31CB67, 0xB68BB647, 0xEF01EF5B,
0x1218121E, 0x602360C5, 0x6ADD6AB0, 0x4D1F4DF6, 0xCE4ECEE9, 0xDE2DDE7C,
0x55F9559D, 0x7E487E5A, 0x214F21B2, 0x03F2037A, 0xA065A026, 0x5E8E5E19,
0x5A785A66, 0x655C654B, 0x6258624E, 0xFD19FD45, 0x068D06F4, 0x40E54086,
0xF298F2BE, 0x335733AC, 0x17671790, 0x057F058E, 0xE805E85E, 0x4F644F7D,
0x89AF896A, 0x10631095, 0x74B6742F, 0x0AFE0A75, 0x5CF55C92, 0x9BB79B74,
0x2D3C2D33, 0x30A530D6, 0x2ECE2E49, 0x49E94989, 0x46684672, 0x77447755,
0xA8E0A8D8, 0x964D9604, 0x284328BD, 0xA969A929, 0xD929D979, 0x862E8691,
0xD1ACD187, 0xF415F44A, 0x8D598D15, 0xD6A8D682, 0xB90AB9BC, 0x429E420D,
0xF66EF6C1, 0x2F472FB8, 0xDDDFDD06, 0x23342339, 0xCC35CC62, 0xF16AF1C4,
0xC1CFC112, 0x85DC85EB, 0x8F228F9E, 0x71C971A1, 0x90C090F0, 0xAA9BAA53,
0x018901F1, 0x8BD48BE1, 0x4EED4E8C, 0x8EAB8E6F, 0xAB12ABA2, 0x6FA26F3E,
0xE60DE654, 0xDB52DBF2, 0x92BB927B, 0xB702B7B6, 0x692F69CA, 0x39A939D9,
0xD3D7D30C, 0xA761A723, 0xA21EA2AD, 0xC3B4C399, 0x6C506C44, 0x07040705,
0x04F6047F, 0x27C22746, 0xAC16ACA7, 0xD025D076, 0x50865013, 0xDC56DCF7,
0x8455841A, 0xE109E151, 0x7ABE7A25, 0x139113EF},
{0xD939A9D9, 0x90176790, 0x719CB371, 0xD2A6E8D2, 0x05070405, 0x9852FD98,
0x6580A365, 0xDFE476DF, 0x08459A08, 0x024B9202, 0xA0E080A0, 0x665A7866,
0xDDAFE4DD, 0xB06ADDB0, 0xBF63D1BF, 0x362A3836, 0x54E60D54, 0x4320C643,
0x62CC3562, 0xBEF298BE, 0x1E12181E, 0x24EBF724, 0xD7A1ECD7, 0x77416C77,
0xBD2843BD, 0x32BC7532, 0xD47B37D4, 0x9B88269B, 0x700DFA70, 0xF94413F9,
0xB1FB94B1, 0x5A7E485A, 0x7A03F27A, 0xE48CD0E4, 0x47B68B47, 0x3C24303C,
0xA5E784A5, 0x416B5441, 0x06DDDF06, 0xC56023C5, 0x45FD1945, 0xA33A5BA3,
0x68C23D68, 0x158D5915, 0x21ECF321, 0x3166AE31, 0x3E6FA23E, 0x16578216,
0x95106395, 0x5BEF015B, 0x4DB8834D, 0x91862E91, 0xB56DD9B5, 0x1F83511F,
0x53AA9B53, 0x635D7C63, 0x3B68A63B, 0x3FFEEB3F, 0xD630A5D6, 0x257ABE25,
0xA7AC16A7, 0x0F090C0F, 0x35F0E335, 0x23A76123, 0xF090C0F0, 0xAFE98CAF,
0x809D3A80, 0x925CF592, 0x810C7381, 0x27312C27, 0x76D02576, 0xE7560BE7,
0x7B92BB7B, 0xE9CE4EE9, 0xF10189F1, 0x9F1E6B9F, 0xA93453A9, 0xC4F16AC4,
0x99C3B499, 0x975BF197, 0x8347E183, 0x6B18E66B, 0xC822BDC8, 0x0E98450E,
0x6E1FE26E, 0xC9B3F4C9, 0x2F74B62F, 0xCBF866CB, 0xFF99CCFF, 0xEA1495EA,
0xED5803ED, 0xF7DC56F7, 0xE18BD4E1, 0x1B151C1B, 0xADA21EAD, 0x0CD3D70C,
0x2BE2FB2B, 0x1DC8C31D, 0x195E8E19, 0xC22CB5C2, 0x8949E989, 0x12C1CF12,
0x7E95BF7E, 0x207DBA20, 0x6411EA64, 0x840B7784, 0x6DC5396D, 0x6A89AF6A,
0xD17C33D1, 0xA171C9A1, 0xCEFF62CE, 0x37BB7137, 0xFB0F81FB, 0x3DB5793D,
0x51E10951, 0xDC3EADDC, 0x2D3F242D, 0xA476CDA4, 0x9D55F99D, 0xEE82D8EE,
0x8640E586, 0xAE78C5AE, 0xCD25B9CD, 0x04964D04, 0x55774455, 0x0A0E080A,
0x13508613, 0x30F7E730, 0xD337A1D3, 0x40FA1D40, 0x3461AA34, 0x8C4EED8C,
0xB3B006B3, 0x6C54706C, 0x2A73B22A, 0x523BD252, 0x0B9F410B, 0x8B027B8B,
0x88D8A088, 0x4FF3114F, 0x67CB3167, 0x4627C246, 0xC06727C0, 0xB4FC90B4,
0x28382028, 0x7F04F67F, 0x78486078, 0x2EE5FF2E, 0x074C9607, 0x4B655C4B,
0xC72BB1C7, 0x6F8EAB6F, 0x0D429E0D, 0xBBF59CBB, 0xF2DB52F2, 0xF34A1BF3,
0xA63D5FA6, 0x59A49359, 0xBCB90ABC, 0x3AF9EF3A, 0xEF1391EF, 0xFE0885FE,
0x01914901, 0x6116EE61, 0x7CDE2D7C, 0xB2214FB2, 0x42B18F42, 0xDB723BDB,
0xB82F47B8, 0x48BF8748, 0x2CAE6D2C, 0xE3C046E3, 0x573CD657, 0x859A3E85,
0x29A96929, 0x7D4F647D, 0x94812A94, 0x492ECE49, 0x17C6CB17, 0xCA692FCA,
0xC3BDFCC3, 0x5CA3975C, 0x5EE8055E, 0xD0ED7AD0, 0x87D1AC87, 0x8E057F8E,
0xBA64D5BA, 0xA8A51AA8, 0xB7264BB7, 0xB9BE0EB9, 0x6087A760, 0xF8D55AF8,
0x22362822, 0x111B1411, 0xDE753FDE, 0x79D92979, 0xAAEE88AA, 0x332D3C33,
0x5F794C5F, 0xB6B702B6, 0x96CAB896, 0x5835DA58, 0x9CC4B09C, 0xFC4317FC,
0x1A84551A, 0xF64D1FF6, 0x1C598A1C, 0x38B27D38, 0xAC3357AC, 0x18CFC718,
0xF4068DF4, 0x69537469, 0x749BB774, 0xF597C4F5, 0x56AD9F56, 0xDAE372DA,
0xD5EA7ED5, 0x4AF4154A, 0x9E8F229E, 0xA2AB12A2, 0x4E62584E, 0xE85F07E8,
0xE51D99E5, 0x39233439, 0xC1F66EC1, 0x446C5044, 0x5D32DE5D, 0x72466872,
0x26A06526, 0x93CDBC93, 0x03DADB03, 0xC6BAF8C6, 0xFA9EC8FA, 0x82D6A882,
0xCF6E2BCF, 0x50704050, 0xEB85DCEB, 0x750AFE75, 0x8A93328A, 0x8DDFA48D,
0x4C29CA4C, 0x141C1014, 0x73D72173, 0xCCB4F0CC, 0x09D4D309, 0x108A5D10,
0xE2510FE2, 0x00000000, 0x9A196F9A, 0xE01A9DE0, 0x8F94368F, 0xE6C742E6,
0xECC94AEC, 0xFDD25EFD, 0xAB7FC1AB, 0xD8A8E0D8}
};
/* The exp_to_poly and poly_to_exp tables are used to perform efficient
* operations in GF(2^8) represented as GF(2)[x]/w(x) where
* w(x)=x^8+x^6+x^3+x^2+1. We care about doing that because it's part of the
* definition of the RS matrix in the key schedule. Elements of that field
* are polynomials of degree not greater than 7 and all coefficients 0 or 1,
* which can be represented naturally by bytes (just substitute x=2). In that
* form, GF(2^8) addition is the same as bitwise XOR, but GF(2^8)
* multiplication is inefficient without hardware support. To multiply
* faster, I make use of the fact x is a generator for the nonzero elements,
* so that every element p of GF(2)[x]/w(x) is either 0 or equal to (x)^n for
* some n in 0..254. Note that that caret is exponentiation in GF(2^8),
* *not* polynomial notation. So if I want to compute pq where p and q are
* in GF(2^8), I can just say:
* 1. if p=0 or q=0 then pq=0
* 2. otherwise, find m and n such that p=x^m and q=x^n
* 3. pq=(x^m)(x^n)=x^(m+n), so add m and n and find pq
* The translations in steps 2 and 3 are looked up in the tables
* poly_to_exp (for step 2) and exp_to_poly (for step 3). To see this
* in action, look at the CALC_S macro. As additional wrinkles, note that
* one of my operands is always a constant, so the poly_to_exp lookup on it
* is done in advance; I included the original values in the comments so
* readers can have some chance of recognizing that this *is* the RS matrix
* from the Twofish paper. I've only included the table entries I actually
* need; I never do a lookup on a variable input of zero and the biggest
* exponents I'll ever see are 254 (variable) and 237 (constant), so they'll
* never sum to more than 491. I'm repeating part of the exp_to_poly table
* so that I don't have to do mod-255 reduction in the exponent arithmetic.
* Since I know my constant operands are never zero, I only have to worry
* about zero values in the variable operand, and I do it with a simple
* conditional branch. I know conditionals are expensive, but I couldn't
* see a non-horrible way of avoiding them, and I did manage to group the
* statements so that each if covers four group multiplications. */
static const u8 poly_to_exp[255] = {
0x00, 0x01, 0x17, 0x02, 0x2E, 0x18, 0x53, 0x03, 0x6A, 0x2F, 0x93, 0x19,
0x34, 0x54, 0x45, 0x04, 0x5C, 0x6B, 0xB6, 0x30, 0xA6, 0x94, 0x4B, 0x1A,
0x8C, 0x35, 0x81, 0x55, 0xAA, 0x46, 0x0D, 0x05, 0x24, 0x5D, 0x87, 0x6C,
0x9B, 0xB7, 0xC1, 0x31, 0x2B, 0xA7, 0xA3, 0x95, 0x98, 0x4C, 0xCA, 0x1B,
0xE6, 0x8D, 0x73, 0x36, 0xCD, 0x82, 0x12, 0x56, 0x62, 0xAB, 0xF0, 0x47,
0x4F, 0x0E, 0xBD, 0x06, 0xD4, 0x25, 0xD2, 0x5E, 0x27, 0x88, 0x66, 0x6D,
0xD6, 0x9C, 0x79, 0xB8, 0x08, 0xC2, 0xDF, 0x32, 0x68, 0x2C, 0xFD, 0xA8,
0x8A, 0xA4, 0x5A, 0x96, 0x29, 0x99, 0x22, 0x4D, 0x60, 0xCB, 0xE4, 0x1C,
0x7B, 0xE7, 0x3B, 0x8E, 0x9E, 0x74, 0xF4, 0x37, 0xD8, 0xCE, 0xF9, 0x83,
0x6F, 0x13, 0xB2, 0x57, 0xE1, 0x63, 0xDC, 0xAC, 0xC4, 0xF1, 0xAF, 0x48,
0x0A, 0x50, 0x42, 0x0F, 0xBA, 0xBE, 0xC7, 0x07, 0xDE, 0xD5, 0x78, 0x26,
0x65, 0xD3, 0xD1, 0x5F, 0xE3, 0x28, 0x21, 0x89, 0x59, 0x67, 0xFC, 0x6E,
0xB1, 0xD7, 0xF8, 0x9D, 0xF3, 0x7A, 0x3A, 0xB9, 0xC6, 0x09, 0x41, 0xC3,
0xAE, 0xE0, 0xDB, 0x33, 0x44, 0x69, 0x92, 0x2D, 0x52, 0xFE, 0x16, 0xA9,
0x0C, 0x8B, 0x80, 0xA5, 0x4A, 0x5B, 0xB5, 0x97, 0xC9, 0x2A, 0xA2, 0x9A,
0xC0, 0x23, 0x86, 0x4E, 0xBC, 0x61, 0xEF, 0xCC, 0x11, 0xE5, 0x72, 0x1D,
0x3D, 0x7C, 0xEB, 0xE8, 0xE9, 0x3C, 0xEA, 0x8F, 0x7D, 0x9F, 0xEC, 0x75,
0x1E, 0xF5, 0x3E, 0x38, 0xF6, 0xD9, 0x3F, 0xCF, 0x76, 0xFA, 0x1F, 0x84,
0xA0, 0x70, 0xED, 0x14, 0x90, 0xB3, 0x7E, 0x58, 0xFB, 0xE2, 0x20, 0x64,
0xD0, 0xDD, 0x77, 0xAD, 0xDA, 0xC5, 0x40, 0xF2, 0x39, 0xB0, 0xF7, 0x49,
0xB4, 0x0B, 0x7F, 0x51, 0x15, 0x43, 0x91, 0x10, 0x71, 0xBB, 0xEE, 0xBF,
0x85, 0xC8, 0xA1
};
static const u8 exp_to_poly[492] = {
0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x4D, 0x9A, 0x79, 0xF2,
0xA9, 0x1F, 0x3E, 0x7C, 0xF8, 0xBD, 0x37, 0x6E, 0xDC, 0xF5, 0xA7, 0x03,
0x06, 0x0C, 0x18, 0x30, 0x60, 0xC0, 0xCD, 0xD7, 0xE3, 0x8B, 0x5B, 0xB6,
0x21, 0x42, 0x84, 0x45, 0x8A, 0x59, 0xB2, 0x29, 0x52, 0xA4, 0x05, 0x0A,
0x14, 0x28, 0x50, 0xA0, 0x0D, 0x1A, 0x34, 0x68, 0xD0, 0xED, 0x97, 0x63,
0xC6, 0xC1, 0xCF, 0xD3, 0xEB, 0x9B, 0x7B, 0xF6, 0xA1, 0x0F, 0x1E, 0x3C,
0x78, 0xF0, 0xAD, 0x17, 0x2E, 0x5C, 0xB8, 0x3D, 0x7A, 0xF4, 0xA5, 0x07,
0x0E, 0x1C, 0x38, 0x70, 0xE0, 0x8D, 0x57, 0xAE, 0x11, 0x22, 0x44, 0x88,
0x5D, 0xBA, 0x39, 0x72, 0xE4, 0x85, 0x47, 0x8E, 0x51, 0xA2, 0x09, 0x12,
0x24, 0x48, 0x90, 0x6D, 0xDA, 0xF9, 0xBF, 0x33, 0x66, 0xCC, 0xD5, 0xE7,
0x83, 0x4B, 0x96, 0x61, 0xC2, 0xC9, 0xDF, 0xF3, 0xAB, 0x1B, 0x36, 0x6C,
0xD8, 0xFD, 0xB7, 0x23, 0x46, 0x8C, 0x55, 0xAA, 0x19, 0x32, 0x64, 0xC8,
0xDD, 0xF7, 0xA3, 0x0B, 0x16, 0x2C, 0x58, 0xB0, 0x2D, 0x5A, 0xB4, 0x25,
0x4A, 0x94, 0x65, 0xCA, 0xD9, 0xFF, 0xB3, 0x2B, 0x56, 0xAC, 0x15, 0x2A,
0x54, 0xA8, 0x1D, 0x3A, 0x74, 0xE8, 0x9D, 0x77, 0xEE, 0x91, 0x6F, 0xDE,
0xF1, 0xAF, 0x13, 0x26, 0x4C, 0x98, 0x7D, 0xFA, 0xB9, 0x3F, 0x7E, 0xFC,
0xB5, 0x27, 0x4E, 0x9C, 0x75, 0xEA, 0x99, 0x7F, 0xFE, 0xB1, 0x2F, 0x5E,
0xBC, 0x35, 0x6A, 0xD4, 0xE5, 0x87, 0x43, 0x86, 0x41, 0x82, 0x49, 0x92,
0x69, 0xD2, 0xE9, 0x9F, 0x73, 0xE6, 0x81, 0x4F, 0x9E, 0x71, 0xE2, 0x89,
0x5F, 0xBE, 0x31, 0x62, 0xC4, 0xC5, 0xC7, 0xC3, 0xCB, 0xDB, 0xFB, 0xBB,
0x3B, 0x76, 0xEC, 0x95, 0x67, 0xCE, 0xD1, 0xEF, 0x93, 0x6B, 0xD6, 0xE1,
0x8F, 0x53, 0xA6, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x4D,
0x9A, 0x79, 0xF2, 0xA9, 0x1F, 0x3E, 0x7C, 0xF8, 0xBD, 0x37, 0x6E, 0xDC,
0xF5, 0xA7, 0x03, 0x06, 0x0C, 0x18, 0x30, 0x60, 0xC0, 0xCD, 0xD7, 0xE3,
0x8B, 0x5B, 0xB6, 0x21, 0x42, 0x84, 0x45, 0x8A, 0x59, 0xB2, 0x29, 0x52,
0xA4, 0x05, 0x0A, 0x14, 0x28, 0x50, 0xA0, 0x0D, 0x1A, 0x34, 0x68, 0xD0,
0xED, 0x97, 0x63, 0xC6, 0xC1, 0xCF, 0xD3, 0xEB, 0x9B, 0x7B, 0xF6, 0xA1,
0x0F, 0x1E, 0x3C, 0x78, 0xF0, 0xAD, 0x17, 0x2E, 0x5C, 0xB8, 0x3D, 0x7A,
0xF4, 0xA5, 0x07, 0x0E, 0x1C, 0x38, 0x70, 0xE0, 0x8D, 0x57, 0xAE, 0x11,
0x22, 0x44, 0x88, 0x5D, 0xBA, 0x39, 0x72, 0xE4, 0x85, 0x47, 0x8E, 0x51,
0xA2, 0x09, 0x12, 0x24, 0x48, 0x90, 0x6D, 0xDA, 0xF9, 0xBF, 0x33, 0x66,
0xCC, 0xD5, 0xE7, 0x83, 0x4B, 0x96, 0x61, 0xC2, 0xC9, 0xDF, 0xF3, 0xAB,
0x1B, 0x36, 0x6C, 0xD8, 0xFD, 0xB7, 0x23, 0x46, 0x8C, 0x55, 0xAA, 0x19,
0x32, 0x64, 0xC8, 0xDD, 0xF7, 0xA3, 0x0B, 0x16, 0x2C, 0x58, 0xB0, 0x2D,
0x5A, 0xB4, 0x25, 0x4A, 0x94, 0x65, 0xCA, 0xD9, 0xFF, 0xB3, 0x2B, 0x56,
0xAC, 0x15, 0x2A, 0x54, 0xA8, 0x1D, 0x3A, 0x74, 0xE8, 0x9D, 0x77, 0xEE,
0x91, 0x6F, 0xDE, 0xF1, 0xAF, 0x13, 0x26, 0x4C, 0x98, 0x7D, 0xFA, 0xB9,
0x3F, 0x7E, 0xFC, 0xB5, 0x27, 0x4E, 0x9C, 0x75, 0xEA, 0x99, 0x7F, 0xFE,
0xB1, 0x2F, 0x5E, 0xBC, 0x35, 0x6A, 0xD4, 0xE5, 0x87, 0x43, 0x86, 0x41,
0x82, 0x49, 0x92, 0x69, 0xD2, 0xE9, 0x9F, 0x73, 0xE6, 0x81, 0x4F, 0x9E,
0x71, 0xE2, 0x89, 0x5F, 0xBE, 0x31, 0x62, 0xC4, 0xC5, 0xC7, 0xC3, 0xCB
};
/* The table constants are indices of
* S-box entries, preprocessed through q0 and q1. */
static const u8 calc_sb_tbl[512] = {
0xA9, 0x75, 0x67, 0xF3, 0xB3, 0xC6, 0xE8, 0xF4,
0x04, 0xDB, 0xFD, 0x7B, 0xA3, 0xFB, 0x76, 0xC8,
0x9A, 0x4A, 0x92, 0xD3, 0x80, 0xE6, 0x78, 0x6B,
0xE4, 0x45, 0xDD, 0x7D, 0xD1, 0xE8, 0x38, 0x4B,
0x0D, 0xD6, 0xC6, 0x32, 0x35, 0xD8, 0x98, 0xFD,
0x18, 0x37, 0xF7, 0x71, 0xEC, 0xF1, 0x6C, 0xE1,
0x43, 0x30, 0x75, 0x0F, 0x37, 0xF8, 0x26, 0x1B,
0xFA, 0x87, 0x13, 0xFA, 0x94, 0x06, 0x48, 0x3F,
0xF2, 0x5E, 0xD0, 0xBA, 0x8B, 0xAE, 0x30, 0x5B,
0x84, 0x8A, 0x54, 0x00, 0xDF, 0xBC, 0x23, 0x9D,
0x19, 0x6D, 0x5B, 0xC1, 0x3D, 0xB1, 0x59, 0x0E,
0xF3, 0x80, 0xAE, 0x5D, 0xA2, 0xD2, 0x82, 0xD5,
0x63, 0xA0, 0x01, 0x84, 0x83, 0x07, 0x2E, 0x14,
0xD9, 0xB5, 0x51, 0x90, 0x9B, 0x2C, 0x7C, 0xA3,
0xA6, 0xB2, 0xEB, 0x73, 0xA5, 0x4C, 0xBE, 0x54,
0x16, 0x92, 0x0C, 0x74, 0xE3, 0x36, 0x61, 0x51,
0xC0, 0x38, 0x8C, 0xB0, 0x3A, 0xBD, 0xF5, 0x5A,
0x73, 0xFC, 0x2C, 0x60, 0x25, 0x62, 0x0B, 0x96,
0xBB, 0x6C, 0x4E, 0x42, 0x89, 0xF7, 0x6B, 0x10,
0x53, 0x7C, 0x6A, 0x28, 0xB4, 0x27, 0xF1, 0x8C,
0xE1, 0x13, 0xE6, 0x95, 0xBD, 0x9C, 0x45, 0xC7,
0xE2, 0x24, 0xF4, 0x46, 0xB6, 0x3B, 0x66, 0x70,
0xCC, 0xCA, 0x95, 0xE3, 0x03, 0x85, 0x56, 0xCB,
0xD4, 0x11, 0x1C, 0xD0, 0x1E, 0x93, 0xD7, 0xB8,
0xFB, 0xA6, 0xC3, 0x83, 0x8E, 0x20, 0xB5, 0xFF,
0xE9, 0x9F, 0xCF, 0x77, 0xBF, 0xC3, 0xBA, 0xCC,
0xEA, 0x03, 0x77, 0x6F, 0x39, 0x08, 0xAF, 0xBF,
0x33, 0x40, 0xC9, 0xE7, 0x62, 0x2B, 0x71, 0xE2,
0x81, 0x79, 0x79, 0x0C, 0x09, 0xAA, 0xAD, 0x82,
0x24, 0x41, 0xCD, 0x3A, 0xF9, 0xEA, 0xD8, 0xB9,
0xE5, 0xE4, 0xC5, 0x9A, 0xB9, 0xA4, 0x4D, 0x97,
0x44, 0x7E, 0x08, 0xDA, 0x86, 0x7A, 0xE7, 0x17,
0xA1, 0x66, 0x1D, 0x94, 0xAA, 0xA1, 0xED, 0x1D,
0x06, 0x3D, 0x70, 0xF0, 0xB2, 0xDE, 0xD2, 0xB3,
0x41, 0x0B, 0x7B, 0x72, 0xA0, 0xA7, 0x11, 0x1C,
0x31, 0xEF, 0xC2, 0xD1, 0x27, 0x53, 0x90, 0x3E,
0x20, 0x8F, 0xF6, 0x33, 0x60, 0x26, 0xFF, 0x5F,
0x96, 0xEC, 0x5C, 0x76, 0xB1, 0x2A, 0xAB, 0x49,
0x9E, 0x81, 0x9C, 0x88, 0x52, 0xEE, 0x1B, 0x21,
0x5F, 0xC4, 0x93, 0x1A, 0x0A, 0xEB, 0xEF, 0xD9,
0x91, 0xC5, 0x85, 0x39, 0x49, 0x99, 0xEE, 0xCD,
0x2D, 0xAD, 0x4F, 0x31, 0x8F, 0x8B, 0x3B, 0x01,
0x47, 0x18, 0x87, 0x23, 0x6D, 0xDD, 0x46, 0x1F,
0xD6, 0x4E, 0x3E, 0x2D, 0x69, 0xF9, 0x64, 0x48,
0x2A, 0x4F, 0xCE, 0xF2, 0xCB, 0x65, 0x2F, 0x8E,
0xFC, 0x78, 0x97, 0x5C, 0x05, 0x58, 0x7A, 0x19,
0xAC, 0x8D, 0x7F, 0xE5, 0xD5, 0x98, 0x1A, 0x57,
0x4B, 0x67, 0x0E, 0x7F, 0xA7, 0x05, 0x5A, 0x64,
0x28, 0xAF, 0x14, 0x63, 0x3F, 0xB6, 0x29, 0xFE,
0x88, 0xF5, 0x3C, 0xB7, 0x4C, 0x3C, 0x02, 0xA5,
0xB8, 0xCE, 0xDA, 0xE9, 0xB0, 0x68, 0x17, 0x44,
0x55, 0xE0, 0x1F, 0x4D, 0x8A, 0x43, 0x7D, 0x69,
0x57, 0x29, 0xC7, 0x2E, 0x8D, 0xAC, 0x74, 0x15,
0xB7, 0x59, 0xC4, 0xA8, 0x9F, 0x0A, 0x72, 0x9E,
0x7E, 0x6E, 0x15, 0x47, 0x22, 0xDF, 0x12, 0x34,
0x58, 0x35, 0x07, 0x6A, 0x99, 0xCF, 0x34, 0xDC,
0x6E, 0x22, 0x50, 0xC9, 0xDE, 0xC0, 0x68, 0x9B,
0x65, 0x89, 0xBC, 0xD4, 0xDB, 0xED, 0xF8, 0xAB,
0xC8, 0x12, 0xA8, 0xA2, 0x2B, 0x0D, 0x40, 0x52,
0xDC, 0xBB, 0xFE, 0x02, 0x32, 0x2F, 0xA4, 0xA9,
0xCA, 0xD7, 0x10, 0x61, 0x21, 0x1E, 0xF0, 0xB4,
0xD3, 0x50, 0x5D, 0x04, 0x0F, 0xF6, 0x00, 0xC2,
0x6F, 0x16, 0x9D, 0x25, 0x36, 0x86, 0x42, 0x56,
0x4A, 0x55, 0x5E, 0x09, 0xC1, 0xBE, 0xE0, 0x91
};
/* Macro to perform one column of the RS matrix multiplication. The
* parameters a, b, c, and d are the four bytes of output; i is the index
* of the key bytes, and w, x, y, and z, are the column of constants from
* the RS matrix, preprocessed through the poly_to_exp table. */
#define CALC_S(a, b, c, d, i, w, x, y, z) \
if (key[i]) { \
tmp = poly_to_exp[key[i] - 1]; \
(a) ^= exp_to_poly[tmp + (w)]; \
(b) ^= exp_to_poly[tmp + (x)]; \
(c) ^= exp_to_poly[tmp + (y)]; \
(d) ^= exp_to_poly[tmp + (z)]; \
}
/* Macros to calculate the key-dependent S-boxes for a 128-bit key using
* the S vector from CALC_S. CALC_SB_2 computes a single entry in all
* four S-boxes, where i is the index of the entry to compute, and a and b
* are the index numbers preprocessed through the q0 and q1 tables
* respectively. */
#define CALC_SB_2(i, a, b) \
ctx->s[0][i] = mds[0][q0[(a) ^ sa] ^ se]; \
ctx->s[1][i] = mds[1][q0[(b) ^ sb] ^ sf]; \
ctx->s[2][i] = mds[2][q1[(a) ^ sc] ^ sg]; \
ctx->s[3][i] = mds[3][q1[(b) ^ sd] ^ sh]
/* Macro exactly like CALC_SB_2, but for 192-bit keys. */
#define CALC_SB192_2(i, a, b) \
ctx->s[0][i] = mds[0][q0[q0[(b) ^ sa] ^ se] ^ si]; \
ctx->s[1][i] = mds[1][q0[q1[(b) ^ sb] ^ sf] ^ sj]; \
ctx->s[2][i] = mds[2][q1[q0[(a) ^ sc] ^ sg] ^ sk]; \
ctx->s[3][i] = mds[3][q1[q1[(a) ^ sd] ^ sh] ^ sl];
/* Macro exactly like CALC_SB_2, but for 256-bit keys. */
#define CALC_SB256_2(i, a, b) \
ctx->s[0][i] = mds[0][q0[q0[q1[(b) ^ sa] ^ se] ^ si] ^ sm]; \
ctx->s[1][i] = mds[1][q0[q1[q1[(a) ^ sb] ^ sf] ^ sj] ^ sn]; \
ctx->s[2][i] = mds[2][q1[q0[q0[(a) ^ sc] ^ sg] ^ sk] ^ so]; \
ctx->s[3][i] = mds[3][q1[q1[q0[(b) ^ sd] ^ sh] ^ sl] ^ sp];
/* Macros to calculate the whitening and round subkeys. CALC_K_2 computes the
* last two stages of the h() function for a given index (either 2i or 2i+1).
* a, b, c, and d are the four bytes going into the last two stages. For
* 128-bit keys, this is the entire h() function and a and c are the index
* preprocessed through q0 and q1 respectively; for longer keys they are the
* output of previous stages. j is the index of the first key byte to use.
* CALC_K computes a pair of subkeys for 128-bit Twofish, by calling CALC_K_2
* twice, doing the Psuedo-Hadamard Transform, and doing the necessary
* rotations. Its parameters are: a, the array to write the results into,
* j, the index of the first output entry, k and l, the preprocessed indices
* for index 2i, and m and n, the preprocessed indices for index 2i+1.
* CALC_K192_2 expands CALC_K_2 to handle 192-bit keys, by doing an
* additional lookup-and-XOR stage. The parameters a, b, c and d are the
* four bytes going into the last three stages. For 192-bit keys, c = d
* are the index preprocessed through q0, and a = b are the index
* preprocessed through q1; j is the index of the first key byte to use.
* CALC_K192 is identical to CALC_K but for using the CALC_K192_2 macro
* instead of CALC_K_2.
* CALC_K256_2 expands CALC_K192_2 to handle 256-bit keys, by doing an
* additional lookup-and-XOR stage. The parameters a and b are the index
* preprocessed through q0 and q1 respectively; j is the index of the first
* key byte to use. CALC_K256 is identical to CALC_K but for using the
* CALC_K256_2 macro instead of CALC_K_2. */
#define CALC_K_2(a, b, c, d, j) \
mds[0][q0[a ^ key[(j) + 8]] ^ key[j]] \
^ mds[1][q0[b ^ key[(j) + 9]] ^ key[(j) + 1]] \
^ mds[2][q1[c ^ key[(j) + 10]] ^ key[(j) + 2]] \
^ mds[3][q1[d ^ key[(j) + 11]] ^ key[(j) + 3]]
#define CALC_K(a, j, k, l, m, n) \
x = CALC_K_2 (k, l, k, l, 0); \
y = CALC_K_2 (m, n, m, n, 4); \
y = (y << 8) + (y >> 24); \
x += y; y += x; ctx->a[j] = x; \
ctx->a[(j) + 1] = (y << 9) + (y >> 23)
#define CALC_K192_2(a, b, c, d, j) \
CALC_K_2 (q0[a ^ key[(j) + 16]], \
q1[b ^ key[(j) + 17]], \
q0[c ^ key[(j) + 18]], \
q1[d ^ key[(j) + 19]], j)
#define CALC_K192(a, j, k, l, m, n) \
x = CALC_K192_2 (l, l, k, k, 0); \
y = CALC_K192_2 (n, n, m, m, 4); \
y = (y << 8) + (y >> 24); \
x += y; y += x; ctx->a[j] = x; \
ctx->a[(j) + 1] = (y << 9) + (y >> 23)
#define CALC_K256_2(a, b, j) \
CALC_K192_2 (q1[b ^ key[(j) + 24]], \
q1[a ^ key[(j) + 25]], \
q0[a ^ key[(j) + 26]], \
q0[b ^ key[(j) + 27]], j)
#define CALC_K256(a, j, k, l, m, n) \
x = CALC_K256_2 (k, l, 0); \
y = CALC_K256_2 (m, n, 4); \
y = (y << 8) + (y >> 24); \
x += y; y += x; ctx->a[j] = x; \
ctx->a[(j) + 1] = (y << 9) + (y >> 23)
/* Macros to compute the g() function in the encryption and decryption
* rounds. G1 is the straight g() function; G2 includes the 8-bit
* rotation for the high 32-bit word. */
#define G1(a) \
(ctx->s[0][(a) & 0xFF]) ^ (ctx->s[1][((a) >> 8) & 0xFF]) \
^ (ctx->s[2][((a) >> 16) & 0xFF]) ^ (ctx->s[3][(a) >> 24])
#define G2(b) \
(ctx->s[1][(b) & 0xFF]) ^ (ctx->s[2][((b) >> 8) & 0xFF]) \
^ (ctx->s[3][((b) >> 16) & 0xFF]) ^ (ctx->s[0][(b) >> 24])
/* Encryption and decryption Feistel rounds. Each one calls the two g()
* macros, does the PHT, and performs the XOR and the appropriate bit
* rotations. The parameters are the round number (used to select subkeys),
* and the four 32-bit chunks of the text. */
#define ENCROUND(n, a, b, c, d) \
x = G1 (a); y = G2 (b); \
x += y; y += x + ctx->k[2 * (n) + 1]; \
(c) ^= x + ctx->k[2 * (n)]; \
(c) = ((c) >> 1) + ((c) << 31); \
(d) = (((d) << 1)+((d) >> 31)) ^ y
#define DECROUND(n, a, b, c, d) \
x = G1 (a); y = G2 (b); \
x += y; y += x; \
(d) ^= y + ctx->k[2 * (n) + 1]; \
(d) = ((d) >> 1) + ((d) << 31); \
(c) = (((c) << 1)+((c) >> 31)); \
(c) ^= (x + ctx->k[2 * (n)])
/* Encryption and decryption cycles; each one is simply two Feistel rounds
* with the 32-bit chunks re-ordered to simulate the "swap" */
#define ENCCYCLE(n) \
ENCROUND (2 * (n), a, b, c, d); \
ENCROUND (2 * (n) + 1, c, d, a, b)
#define DECCYCLE(n) \
DECROUND (2 * (n) + 1, c, d, a, b); \
DECROUND (2 * (n), a, b, c, d)
/* Macros to convert the input and output bytes into 32-bit words,
* and simultaneously perform the whitening step. INPACK packs word
* number n into the variable named by x, using whitening subkey number m.
* OUTUNPACK unpacks word number n from the variable named by x, using
* whitening subkey number m. */
#define INPACK(n, x, m) \
x = in[4 * (n)] ^ (in[4 * (n) + 1] << 8) \
^ (in[4 * (n) + 2] << 16) ^ (in[4 * (n) + 3] << 24) ^ ctx->w[m]
#define OUTUNPACK(n, x, m) \
x ^= ctx->w[m]; \
out[4 * (n)] = x; out[4 * (n) + 1] = x >> 8; \
out[4 * (n) + 2] = x >> 16; out[4 * (n) + 3] = x >> 24
#define TF_MIN_KEY_SIZE 16
#define TF_MAX_KEY_SIZE 32
#define TF_BLOCK_SIZE 16
/* Structure for an expanded Twofish key. s contains the key-dependent
* S-boxes composed with the MDS matrix; w contains the eight "whitening"
* subkeys, K[0] through K[7]. k holds the remaining, "round" subkeys. Note
* that k[i] corresponds to what the Twofish paper calls K[i+8]. */
struct twofish_ctx {
u32 s[4][256], w[8], k[32];
};
/* Perform the key setup. */
static int twofish_setkey(void *cx, const u8 *key,
unsigned int key_len, u32 *flags)
{
struct twofish_ctx *ctx = cx;
int i, j, k;
/* Temporaries for CALC_K. */
u32 x, y;
/* The S vector used to key the S-boxes, split up into individual bytes.
* 128-bit keys use only sa through sh; 256-bit use all of them. */
u8 sa = 0, sb = 0, sc = 0, sd = 0, se = 0, sf = 0, sg = 0, sh = 0;
u8 si = 0, sj = 0, sk = 0, sl = 0, sm = 0, sn = 0, so = 0, sp = 0;
/* Temporary for CALC_S. */
u8 tmp;
/* Check key length. */
if (key_len != 16 && key_len != 24 && key_len != 32)
return -EINVAL; /* unsupported key length */
/* Compute the first two words of the S vector. The magic numbers are
* the entries of the RS matrix, preprocessed through poly_to_exp. The
* numbers in the comments are the original (polynomial form) matrix
* entries. */
CALC_S (sa, sb, sc, sd, 0, 0x00, 0x2D, 0x01, 0x2D); /* 01 A4 02 A4 */
CALC_S (sa, sb, sc, sd, 1, 0x2D, 0xA4, 0x44, 0x8A); /* A4 56 A1 55 */
CALC_S (sa, sb, sc, sd, 2, 0x8A, 0xD5, 0xBF, 0xD1); /* 55 82 FC 87 */
CALC_S (sa, sb, sc, sd, 3, 0xD1, 0x7F, 0x3D, 0x99); /* 87 F3 C1 5A */
CALC_S (sa, sb, sc, sd, 4, 0x99, 0x46, 0x66, 0x96); /* 5A 1E 47 58 */
CALC_S (sa, sb, sc, sd, 5, 0x96, 0x3C, 0x5B, 0xED); /* 58 C6 AE DB */
CALC_S (sa, sb, sc, sd, 6, 0xED, 0x37, 0x4F, 0xE0); /* DB 68 3D 9E */
CALC_S (sa, sb, sc, sd, 7, 0xE0, 0xD0, 0x8C, 0x17); /* 9E E5 19 03 */
CALC_S (se, sf, sg, sh, 8, 0x00, 0x2D, 0x01, 0x2D); /* 01 A4 02 A4 */
CALC_S (se, sf, sg, sh, 9, 0x2D, 0xA4, 0x44, 0x8A); /* A4 56 A1 55 */
CALC_S (se, sf, sg, sh, 10, 0x8A, 0xD5, 0xBF, 0xD1); /* 55 82 FC 87 */
CALC_S (se, sf, sg, sh, 11, 0xD1, 0x7F, 0x3D, 0x99); /* 87 F3 C1 5A */
CALC_S (se, sf, sg, sh, 12, 0x99, 0x46, 0x66, 0x96); /* 5A 1E 47 58 */
CALC_S (se, sf, sg, sh, 13, 0x96, 0x3C, 0x5B, 0xED); /* 58 C6 AE DB */
CALC_S (se, sf, sg, sh, 14, 0xED, 0x37, 0x4F, 0xE0); /* DB 68 3D 9E */
CALC_S (se, sf, sg, sh, 15, 0xE0, 0xD0, 0x8C, 0x17); /* 9E E5 19 03 */
if (key_len == 24 || key_len == 32) { /* 192- or 256-bit key */
/* Calculate the third word of the S vector */
CALC_S (si, sj, sk, sl, 16, 0x00, 0x2D, 0x01, 0x2D); /* 01 A4 02 A4 */
CALC_S (si, sj, sk, sl, 17, 0x2D, 0xA4, 0x44, 0x8A); /* A4 56 A1 55 */
CALC_S (si, sj, sk, sl, 18, 0x8A, 0xD5, 0xBF, 0xD1); /* 55 82 FC 87 */
CALC_S (si, sj, sk, sl, 19, 0xD1, 0x7F, 0x3D, 0x99); /* 87 F3 C1 5A */
CALC_S (si, sj, sk, sl, 20, 0x99, 0x46, 0x66, 0x96); /* 5A 1E 47 58 */
CALC_S (si, sj, sk, sl, 21, 0x96, 0x3C, 0x5B, 0xED); /* 58 C6 AE DB */
CALC_S (si, sj, sk, sl, 22, 0xED, 0x37, 0x4F, 0xE0); /* DB 68 3D 9E */
CALC_S (si, sj, sk, sl, 23, 0xE0, 0xD0, 0x8C, 0x17); /* 9E E5 19 03 */
}
if (key_len == 32) { /* 256-bit key */
/* Calculate the fourth word of the S vector */
CALC_S (sm, sn, so, sp, 24, 0x00, 0x2D, 0x01, 0x2D); /* 01 A4 02 A4 */
CALC_S (sm, sn, so, sp, 25, 0x2D, 0xA4, 0x44, 0x8A); /* A4 56 A1 55 */
CALC_S (sm, sn, so, sp, 26, 0x8A, 0xD5, 0xBF, 0xD1); /* 55 82 FC 87 */
CALC_S (sm, sn, so, sp, 27, 0xD1, 0x7F, 0x3D, 0x99); /* 87 F3 C1 5A */
CALC_S (sm, sn, so, sp, 28, 0x99, 0x46, 0x66, 0x96); /* 5A 1E 47 58 */
CALC_S (sm, sn, so, sp, 29, 0x96, 0x3C, 0x5B, 0xED); /* 58 C6 AE DB */
CALC_S (sm, sn, so, sp, 30, 0xED, 0x37, 0x4F, 0xE0); /* DB 68 3D 9E */
CALC_S (sm, sn, so, sp, 31, 0xE0, 0xD0, 0x8C, 0x17); /* 9E E5 19 03 */
/* Compute the S-boxes. */
for ( i = j = 0, k = 1; i < 256; i++, j += 2, k += 2 ) {
CALC_SB256_2( i, calc_sb_tbl[j], calc_sb_tbl[k] );
}
/* Calculate whitening and round subkeys. The constants are
* indices of subkeys, preprocessed through q0 and q1. */
CALC_K256 (w, 0, 0xA9, 0x75, 0x67, 0xF3);
CALC_K256 (w, 2, 0xB3, 0xC6, 0xE8, 0xF4);
CALC_K256 (w, 4, 0x04, 0xDB, 0xFD, 0x7B);
CALC_K256 (w, 6, 0xA3, 0xFB, 0x76, 0xC8);
CALC_K256 (k, 0, 0x9A, 0x4A, 0x92, 0xD3);
CALC_K256 (k, 2, 0x80, 0xE6, 0x78, 0x6B);
CALC_K256 (k, 4, 0xE4, 0x45, 0xDD, 0x7D);
CALC_K256 (k, 6, 0xD1, 0xE8, 0x38, 0x4B);
CALC_K256 (k, 8, 0x0D, 0xD6, 0xC6, 0x32);
CALC_K256 (k, 10, 0x35, 0xD8, 0x98, 0xFD);
CALC_K256 (k, 12, 0x18, 0x37, 0xF7, 0x71);
CALC_K256 (k, 14, 0xEC, 0xF1, 0x6C, 0xE1);
CALC_K256 (k, 16, 0x43, 0x30, 0x75, 0x0F);
CALC_K256 (k, 18, 0x37, 0xF8, 0x26, 0x1B);
CALC_K256 (k, 20, 0xFA, 0x87, 0x13, 0xFA);
CALC_K256 (k, 22, 0x94, 0x06, 0x48, 0x3F);
CALC_K256 (k, 24, 0xF2, 0x5E, 0xD0, 0xBA);
CALC_K256 (k, 26, 0x8B, 0xAE, 0x30, 0x5B);
CALC_K256 (k, 28, 0x84, 0x8A, 0x54, 0x00);
CALC_K256 (k, 30, 0xDF, 0xBC, 0x23, 0x9D);
} else if (key_len == 24) { /* 192-bit key */
/* Compute the S-boxes. */
for ( i = j = 0, k = 1; i < 256; i++, j += 2, k += 2 ) {
CALC_SB192_2( i, calc_sb_tbl[j], calc_sb_tbl[k] );
}
/* Calculate whitening and round subkeys. The constants are
* indices of subkeys, preprocessed through q0 and q1. */
CALC_K192 (w, 0, 0xA9, 0x75, 0x67, 0xF3);
CALC_K192 (w, 2, 0xB3, 0xC6, 0xE8, 0xF4);
CALC_K192 (w, 4, 0x04, 0xDB, 0xFD, 0x7B);
CALC_K192 (w, 6, 0xA3, 0xFB, 0x76, 0xC8);
CALC_K192 (k, 0, 0x9A, 0x4A, 0x92, 0xD3);
CALC_K192 (k, 2, 0x80, 0xE6, 0x78, 0x6B);
CALC_K192 (k, 4, 0xE4, 0x45, 0xDD, 0x7D);
CALC_K192 (k, 6, 0xD1, 0xE8, 0x38, 0x4B);
CALC_K192 (k, 8, 0x0D, 0xD6, 0xC6, 0x32);
CALC_K192 (k, 10, 0x35, 0xD8, 0x98, 0xFD);
CALC_K192 (k, 12, 0x18, 0x37, 0xF7, 0x71);
CALC_K192 (k, 14, 0xEC, 0xF1, 0x6C, 0xE1);
CALC_K192 (k, 16, 0x43, 0x30, 0x75, 0x0F);
CALC_K192 (k, 18, 0x37, 0xF8, 0x26, 0x1B);
CALC_K192 (k, 20, 0xFA, 0x87, 0x13, 0xFA);
CALC_K192 (k, 22, 0x94, 0x06, 0x48, 0x3F);
CALC_K192 (k, 24, 0xF2, 0x5E, 0xD0, 0xBA);
CALC_K192 (k, 26, 0x8B, 0xAE, 0x30, 0x5B);
CALC_K192 (k, 28, 0x84, 0x8A, 0x54, 0x00);
CALC_K192 (k, 30, 0xDF, 0xBC, 0x23, 0x9D);
} else { /* 128-bit key */
/* Compute the S-boxes. */
for ( i = j = 0, k = 1; i < 256; i++, j += 2, k += 2 ) {
CALC_SB_2( i, calc_sb_tbl[j], calc_sb_tbl[k] );
}
/* Calculate whitening and round subkeys. The constants are
* indices of subkeys, preprocessed through q0 and q1. */
CALC_K (w, 0, 0xA9, 0x75, 0x67, 0xF3);
CALC_K (w, 2, 0xB3, 0xC6, 0xE8, 0xF4);
CALC_K (w, 4, 0x04, 0xDB, 0xFD, 0x7B);
CALC_K (w, 6, 0xA3, 0xFB, 0x76, 0xC8);
CALC_K (k, 0, 0x9A, 0x4A, 0x92, 0xD3);
CALC_K (k, 2, 0x80, 0xE6, 0x78, 0x6B);
CALC_K (k, 4, 0xE4, 0x45, 0xDD, 0x7D);
CALC_K (k, 6, 0xD1, 0xE8, 0x38, 0x4B);
CALC_K (k, 8, 0x0D, 0xD6, 0xC6, 0x32);
CALC_K (k, 10, 0x35, 0xD8, 0x98, 0xFD);
CALC_K (k, 12, 0x18, 0x37, 0xF7, 0x71);
CALC_K (k, 14, 0xEC, 0xF1, 0x6C, 0xE1);
CALC_K (k, 16, 0x43, 0x30, 0x75, 0x0F);
CALC_K (k, 18, 0x37, 0xF8, 0x26, 0x1B);
CALC_K (k, 20, 0xFA, 0x87, 0x13, 0xFA);
CALC_K (k, 22, 0x94, 0x06, 0x48, 0x3F);
CALC_K (k, 24, 0xF2, 0x5E, 0xD0, 0xBA);
CALC_K (k, 26, 0x8B, 0xAE, 0x30, 0x5B);
CALC_K (k, 28, 0x84, 0x8A, 0x54, 0x00);
CALC_K (k, 30, 0xDF, 0xBC, 0x23, 0x9D);
}
return 0;
}
/* Encrypt one block. in and out may be the same. */
static void twofish_encrypt(void *cx, u8 *out, const u8 *in)
{
struct twofish_ctx *ctx = cx;
/* The four 32-bit chunks of the text. */
u32 a, b, c, d;
/* Temporaries used by the round function. */
u32 x, y;
/* Input whitening and packing. */
INPACK (0, a, 0);
INPACK (1, b, 1);
INPACK (2, c, 2);
INPACK (3, d, 3);
/* Encryption Feistel cycles. */
ENCCYCLE (0);
ENCCYCLE (1);
ENCCYCLE (2);
ENCCYCLE (3);
ENCCYCLE (4);
ENCCYCLE (5);
ENCCYCLE (6);
ENCCYCLE (7);
/* Output whitening and unpacking. */
OUTUNPACK (0, c, 4);
OUTUNPACK (1, d, 5);
OUTUNPACK (2, a, 6);
OUTUNPACK (3, b, 7);
}
/* Decrypt one block. in and out may be the same. */
static void twofish_decrypt(void *cx, u8 *out, const u8 *in)
{
struct twofish_ctx *ctx = cx;
/* The four 32-bit chunks of the text. */
u32 a, b, c, d;
/* Temporaries used by the round function. */
u32 x, y;
/* Input whitening and packing. */
INPACK (0, c, 4);
INPACK (1, d, 5);
INPACK (2, a, 6);
INPACK (3, b, 7);
/* Encryption Feistel cycles. */
DECCYCLE (7);
DECCYCLE (6);
DECCYCLE (5);
DECCYCLE (4);
DECCYCLE (3);
DECCYCLE (2);
DECCYCLE (1);
DECCYCLE (0);
/* Output whitening and unpacking. */
OUTUNPACK (0, a, 0);
OUTUNPACK (1, b, 1);
OUTUNPACK (2, c, 2);
OUTUNPACK (3, d, 3);
}
static struct crypto_alg alg = {
.cra_name = "twofish",
.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
.cra_blocksize = TF_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct twofish_ctx),
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(alg.cra_list),
.cra_u = { .cipher = {
.cia_min_keysize = TF_MIN_KEY_SIZE,
.cia_max_keysize = TF_MAX_KEY_SIZE,
.cia_ivsize = TF_BLOCK_SIZE,
.cia_setkey = twofish_setkey,
.cia_encrypt = twofish_encrypt,
.cia_decrypt = twofish_decrypt } }
};
static int __init init(void)
{
return crypto_register_alg(&alg);
}
static void __exit fini(void)
{
crypto_unregister_alg(&alg);
}
module_init(init);
module_exit(fini);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION ("Twofish Cipher Algorithm");
include/linux/crypto.h
View file @ 49be834d
...@@ -58,7 +58,6 @@ ...@@ -58,7 +58,6 @@
*/ */
#define CRYPTO_UNSPEC 0 #define CRYPTO_UNSPEC 0
#define CRYPTO_MAX_ALG_NAME 64 #define CRYPTO_MAX_ALG_NAME 64
#define CRYPTO_MAX_CIPHER_BLOCK_SIZE 16
struct scatterlist; struct scatterlist;
...@@ -135,6 +134,7 @@ struct cipher_tfm { ...@@ -135,6 +134,7 @@ struct cipher_tfm {
struct scatterlist *sg, unsigned int nsg); struct scatterlist *sg, unsigned int nsg);
int (*cit_decrypt)(struct crypto_tfm *tfm, int (*cit_decrypt)(struct crypto_tfm *tfm,
struct scatterlist *sg, unsigned int nsg); struct scatterlist *sg, unsigned int nsg);
void (*cit_xor_block)(u8 *dst, const u8 *src);
}; };
struct digest_tfm { struct digest_tfm {
......
include/linux/mroute.h
View file @ 49be834d
...@@ -126,6 +126,8 @@ struct igmpmsg ...@@ -126,6 +126,8 @@ struct igmpmsg
*/ */
#ifdef __KERNEL__ #ifdef __KERNEL__
#include <net/sock.h>
extern int ip_mroute_setsockopt(struct sock *, int, char *, int); extern int ip_mroute_setsockopt(struct sock *, int, char *, int);
extern int ip_mroute_getsockopt(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); extern int ipmr_ioctl(struct sock *sk, int cmd, unsigned long arg);
......
net/bridge/br_if.c
View file @ 49be834d
...@@ -145,7 +145,7 @@ static struct net_bridge_port *new_nbp(struct net_bridge *br, struct net_device ...@@ -145,7 +145,7 @@ static struct net_bridge_port *new_nbp(struct net_bridge *br, struct net_device
int i; int i;
struct net_bridge_port *p; struct net_bridge_port *p;
p = kmalloc(sizeof(*p), GFP_KERNEL); p = kmalloc(sizeof(*p), GFP_ATOMIC);
if (p == NULL) if (p == NULL)
return p; return p;
......
net/core/dev.c
View file @ 49be834d
...@@ -94,6 +94,7 @@ ...@@ -94,6 +94,7 @@
#include <net/sock.h> #include <net/sock.h>
#include <linux/rtnetlink.h> #include <linux/rtnetlink.h>
#include <linux/proc_fs.h> #include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/stat.h> #include <linux/stat.h>
#include <linux/if_bridge.h> #include <linux/if_bridge.h>
#include <linux/divert.h> #include <linux/divert.h>
...@@ -114,6 +115,7 @@ ...@@ -114,6 +115,7 @@
extern int plip_init(void); extern int plip_init(void);
#endif #endif
#include <asm/current.h>
/* This define, if set, will randomly drop a packet when congestion /* This define, if set, will randomly drop a packet when congestion
* is more than moderate. It helps fairness in the multi-interface * is more than moderate. It helps fairness in the multi-interface
...@@ -1719,128 +1721,196 @@ static int dev_ifconf(char *arg) ...@@ -1719,128 +1721,196 @@ static int dev_ifconf(char *arg)
return copy_to_user(arg, &ifc, sizeof(struct ifconf)) ? -EFAULT : 0; 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 * This is invoked by the /proc filesystem handler to display a device
* in detail. * 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;
}
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;
}
static int sprintf_stats(char *buffer, struct net_device *dev) 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) : struct net_device_stats *stats = dev->get_stats ? dev->get_stats(dev) :
NULL; NULL;
int size;
if (stats) if (stats)
size = sprintf(buffer, "%6s:%8lu %7lu %4lu %4lu %4lu %5lu " seq_printf(seq, "%6s:%8lu %7lu %4lu %4lu %4lu %5lu %10lu %9lu "
"%10lu %9lu %8lu %7lu %4lu %4lu %4lu " "%8lu %7lu %4lu %4lu %4lu %5lu %7lu %10lu\n",
"%5lu %7lu %10lu\n", dev->name, stats->rx_bytes, stats->rx_packets,
dev->name, stats->rx_errors,
stats->rx_bytes, stats->rx_dropped + stats->rx_missed_errors,
stats->rx_packets, stats->rx_errors, stats->rx_fifo_errors,
stats->rx_dropped + stats->rx_missed_errors, stats->rx_length_errors + stats->rx_over_errors +
stats->rx_fifo_errors, stats->rx_crc_errors + stats->rx_frame_errors,
stats->rx_length_errors + stats->rx_over_errors + stats->rx_compressed, stats->multicast,
stats->rx_crc_errors + stats->rx_frame_errors, stats->tx_bytes, stats->tx_packets,
stats->rx_compressed, stats->multicast, stats->tx_errors, stats->tx_dropped,
stats->tx_bytes, stats->tx_fifo_errors, stats->collisions,
stats->tx_packets, stats->tx_errors, stats->tx_dropped, stats->tx_carrier_errors +
stats->tx_fifo_errors, stats->collisions, stats->tx_aborted_errors +
stats->tx_carrier_errors + stats->tx_aborted_errors + stats->tx_window_errors +
stats->tx_window_errors + stats->tx_heartbeat_errors, stats->tx_heartbeat_errors,
stats->tx_compressed); stats->tx_compressed);
else else
size = sprintf(buffer, "%6s: No statistics available.\n", seq_printf(seq, "%6s: No statistics available.\n", dev->name);
dev->name);
return size;
} }
/* /*
* Called from the PROCfs module. This now uses the new arbitrary sized * Called from the PROCfs module. This now uses the new arbitrary sized
* /proc/net interface to create /proc/net/dev * /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; if (v == (void *)1)
off_t begin = 0; seq_printf(seq, "Inter-| Receive "
off_t pos = 0; " | Transmit\n"
int size; " face |bytes packets errs drop fifo frame "
struct net_device *dev; "compressed multicast|bytes packets errs "
"drop fifo colls carrier compressed\n");
else
dev_seq_printf_stats(seq, v);
return 0;
}
size = sprintf(buffer, static struct netif_rx_stats *softnet_get_online(loff_t *pos)
"Inter-| Receive | Transmit\n" {
" face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed\n"); struct netif_rx_stats *rc = NULL;
pos += size; while (*pos < NR_CPUS)
len += size; if (cpu_online(*pos)) {
rc = &netdev_rx_stat[*pos];
break;
} else
++*pos;
return rc;
}
read_lock(&dev_base_lock); static void *softnet_seq_start(struct seq_file *seq, loff_t *pos)
for (dev = dev_base; dev; dev = dev->next) { {
size = sprintf_stats(buffer+len, dev); return softnet_get_online(pos);
len += size; }
pos = begin + len;
if (pos < offset) { static void *softnet_seq_next(struct seq_file *seq, void *v, loff_t *pos)
len = 0; {
begin = pos; ++*pos;
} return softnet_get_online(pos);
if (pos > offset + length) }
break;
}
read_unlock(&dev_base_lock);
*start = buffer + (offset - begin); /* Start of wanted data */ static void softnet_seq_stop(struct seq_file *seq, void *v)
len -= offset - begin; /* Start slop */ {
if (len > length)
len = length; /* Ending slop */
if (len < 0)
len = 0;
return len;
} }
static int dev_proc_stats(char *buffer, char **start, off_t offset, static int softnet_seq_show(struct seq_file *seq, void *v)
int length, int *eof, void *data)
{ {
int i; struct netif_rx_stats *s = v;
int len = 0;
for (i = 0; i < NR_CPUS; i++) { seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
if (!cpu_online(i)) s->total, s->dropped, s->time_squeeze, s->throttled,
continue; s->fastroute_hit, s->fastroute_success, s->fastroute_defer,
s->fastroute_deferred_out,
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,
#if 0 #if 0
netdev_rx_stat[i].fastroute_latency_reduction s->fastroute_latency_reduction
#else #else
netdev_rx_stat[i].cpu_collision s->cpu_collision
#endif #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) static int dev_seq_open(struct inode *inode, struct file *file)
len = length; {
if (len < 0) return seq_open(file, &dev_seq_ops);
len = 0; }
static struct file_operations dev_seq_fops = {
.open = dev_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
*start = buffer + offset; static struct seq_operations softnet_seq_ops = {
*eof = 1; .start = softnet_seq_start,
.next = softnet_seq_next,
.stop = softnet_seq_stop,
.show = softnet_seq_show,
};
return len; 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 */ #endif /* CONFIG_PROC_FS */
...@@ -2680,10 +2750,13 @@ extern void dv_init(void); ...@@ -2680,10 +2750,13 @@ extern void dv_init(void);
static int __init net_dev_init(void) static int __init net_dev_init(void)
{ {
struct net_device *dev, **dp; struct net_device *dev, **dp;
int i; int i, rc = -ENOMEM;
BUG_ON(!dev_boot_phase); BUG_ON(!dev_boot_phase);
if (dev_proc_init())
goto out;
#ifdef CONFIG_NET_DIVERT #ifdef CONFIG_NET_DIVERT
dv_init(); dv_init();
#endif /* CONFIG_NET_DIVERT */ #endif /* CONFIG_NET_DIVERT */
...@@ -2787,15 +2860,6 @@ static int __init net_dev_init(void) ...@@ -2787,15 +2860,6 @@ 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; dev_boot_phase = 0;
open_softirq(NET_TX_SOFTIRQ, net_tx_action, NULL); open_softirq(NET_TX_SOFTIRQ, net_tx_action, NULL);
...@@ -2812,8 +2876,9 @@ static int __init net_dev_init(void) ...@@ -2812,8 +2876,9 @@ static int __init net_dev_init(void)
*/ */
net_device_init(); net_device_init();
rc = 0;
return 0; out:
return rc;
} }
subsys_initcall(net_dev_init); subsys_initcall(net_dev_init);
......
net/core/wireless.c
View file @ 49be834d
...@@ -47,15 +47,18 @@ ...@@ -47,15 +47,18 @@
/***************************** INCLUDES *****************************/ /***************************** INCLUDES *****************************/
#include <asm/uaccess.h> /* copy_to_user() */
#include <linux/config.h> /* Not needed ??? */ #include <linux/config.h> /* Not needed ??? */
#include <linux/types.h> /* off_t */ #include <linux/types.h> /* off_t */
#include <linux/netdevice.h> /* struct ifreq, dev_get_by_name() */ #include <linux/netdevice.h> /* struct ifreq, dev_get_by_name() */
#include <linux/proc_fs.h>
#include <linux/rtnetlink.h> /* rtnetlink stuff */ #include <linux/rtnetlink.h> /* rtnetlink stuff */
#include <linux/seq_file.h>
#include <linux/wireless.h> /* Pretty obvious */ #include <linux/wireless.h> /* Pretty obvious */
#include <net/iw_handler.h> /* New driver API */ #include <net/iw_handler.h> /* New driver API */
#include <asm/uaccess.h> /* copy_to_user() */
/**************************** CONSTANTS ****************************/ /**************************** CONSTANTS ****************************/
/* Enough lenience, let's make sure things are proper... */ /* Enough lenience, let's make sure things are proper... */
...@@ -330,83 +333,78 @@ static inline int get_priv_size(__u16 args) ...@@ -330,83 +333,78 @@ static inline int get_priv_size(__u16 args)
/* /*
* Print one entry (line) of /proc/net/wireless * 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 */ /* Get stats from the driver */
struct iw_statistics *stats; struct iw_statistics *stats = get_wireless_stats(dev);
int size;
if (stats) {
stats = get_wireless_stats(dev); seq_printf(seq, "%6s: %04x %3d%c %3d%c %3d%c %6d %6d %6d "
if (stats != (struct iw_statistics *) NULL) { "%6d %6d %6d\n",
size = sprintf(buffer, dev->name, stats->status, stats->qual.qual,
"%6s: %04x %3d%c %3d%c %3d%c %6d %6d %6d %6d %6d %6d\n", stats->qual.updated & 1 ? '.' : ' ',
dev->name, ((__u8) stats->qual.level),
stats->status, stats->qual.updated & 2 ? '.' : ' ',
stats->qual.qual, ((__u8) stats->qual.noise),
stats->qual.updated & 1 ? '.' : ' ', stats->qual.updated & 4 ? '.' : ' ',
((__u8) stats->qual.level), stats->discard.nwid, stats->discard.code,
stats->qual.updated & 2 ? '.' : ' ', stats->discard.fragment, stats->discard.retries,
((__u8) stats->qual.noise), stats->discard.misc, stats->miss.beacon);
stats->qual.updated & 4 ? '.' : ' ',
stats->discard.nwid,
stats->discard.code,
stats->discard.fragment,
stats->discard.retries,
stats->discard.misc,
stats->miss.beacon);
stats->qual.updated = 0; stats->qual.updated = 0;
} }
else
size = 0;
return size;
} }
/* ---------------------------------------------------------------- */ /* ---------------------------------------------------------------- */
/* /*
* Print info for /proc/net/wireless (print all entries) * Print info for /proc/net/wireless (print all entries)
*/ */
int dev_get_wireless_info(char * buffer, char **start, off_t offset, static int wireless_seq_show(struct seq_file *seq, void *v)
int length)
{ {
int len = 0; if (v == (void *)1)
off_t begin = 0; seq_printf(seq, "Inter-| sta-| Quality | Discarded "
off_t pos = 0; "packets | Missed\n"
int size; " face | tus | link level noise | nwid "
"crypt frag retry misc | beacon\n");
struct net_device * dev; else
wireless_seq_printf_stats(seq, v);
size = sprintf(buffer, return 0;
"Inter-| sta-| Quality | Discarded packets | Missed\n" }
" face | tus | link level noise | nwid crypt frag retry misc | beacon\n"
); 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);
pos += size; extern void dev_seq_stop(struct seq_file *seq, void *v);
len += size;
static struct seq_operations wireless_seq_ops = {
read_lock(&dev_base_lock); .start = dev_seq_start,
for (dev = dev_base; dev != NULL; dev = dev->next) { .next = dev_seq_next,
size = sprintf_wireless_stats(buffer + len, dev); .stop = dev_seq_stop,
len += size; .show = wireless_seq_show,
pos = begin + len; };
if (pos < offset) {
len = 0;
begin = pos;
}
if (pos > offset + length)
break;
}
read_unlock(&dev_base_lock);
*start = buffer + (offset - begin); /* Start of wanted data */ static int wireless_seq_open(struct inode *inode, struct file *file)
len -= (offset - begin); /* Start slop */ {
if (len > length) return seq_open(file, &wireless_seq_ops);
len = length; /* Ending slop */ }
if (len < 0)
len = 0; static struct file_operations wireless_seq_fops = {
.open = wireless_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
return len; 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 */ #endif /* CONFIG_PROC_FS */
......
net/ipv4/af_inet.c
View file @ 49be834d
...@@ -103,8 +103,6 @@ ...@@ -103,8 +103,6 @@
#include <net/tcp.h> #include <net/tcp.h>
#include <net/udp.h> #include <net/udp.h>
#include <linux/skbuff.h> #include <linux/skbuff.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <net/sock.h> #include <net/sock.h>
#include <net/raw.h> #include <net/raw.h>
#include <net/icmp.h> #include <net/icmp.h>
...@@ -1165,7 +1163,8 @@ extern void fib_proc_exit(void); ...@@ -1165,7 +1163,8 @@ extern void fib_proc_exit(void);
extern int ip_misc_proc_init(void); extern int ip_misc_proc_init(void);
extern int raw_proc_init(void); extern int raw_proc_init(void);
extern void raw_proc_exit(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 int udp_proc_init(void);
extern void udp_proc_exit(void); extern void udp_proc_exit(void);
...@@ -1175,7 +1174,7 @@ int __init ipv4_proc_init(void) ...@@ -1175,7 +1174,7 @@ int __init ipv4_proc_init(void)
if (raw_proc_init()) if (raw_proc_init())
goto out_raw; goto out_raw;
if (!proc_net_create("tcp", 0, tcp_get_info)) if (tcp_proc_init())
goto out_tcp; goto out_tcp;
if (udp_proc_init()) if (udp_proc_init())
goto out_udp; goto out_udp;
...@@ -1190,7 +1189,7 @@ int __init ipv4_proc_init(void) ...@@ -1190,7 +1189,7 @@ int __init ipv4_proc_init(void)
out_fib: out_fib:
udp_proc_exit(); udp_proc_exit();
out_udp: out_udp:
proc_net_remove("tcp"); tcp_proc_exit();
out_tcp: out_tcp:
raw_proc_exit(); raw_proc_exit();
out_raw: out_raw:
......
net/ipv4/arp.c
View file @ 49be834d
...@@ -1282,7 +1282,7 @@ static void arp_seq_stop(struct seq_file *seq, void *v) ...@@ -1282,7 +1282,7 @@ static void arp_seq_stop(struct seq_file *seq, void *v)
{ {
struct arp_iter_state* state = seq->private; struct arp_iter_state* state = seq->private;
if (!state->is_pneigh) if (!state->is_pneigh && v != (void *)1)
read_unlock_bh(&arp_tbl.lock); read_unlock_bh(&arp_tbl.lock);
} }
......
net/ipv4/raw.c
View file @ 49be834d
...@@ -55,6 +55,7 @@ ...@@ -55,6 +55,7 @@
#include <linux/sockios.h> #include <linux/sockios.h>
#include <linux/socket.h> #include <linux/socket.h>
#include <linux/in.h> #include <linux/in.h>
#include <linux/mroute.h>
#include <linux/netdevice.h> #include <linux/netdevice.h>
#include <linux/in_route.h> #include <linux/in_route.h>
#include <linux/route.h> #include <linux/route.h>
......
net/ipv4/tcp_ipv4.c
View file @ 49be834d
...@@ -69,6 +69,8 @@ ...@@ -69,6 +69,8 @@
#include <linux/inet.h> #include <linux/inet.h>
#include <linux/ipv6.h> #include <linux/ipv6.h>
#include <linux/stddef.h> #include <linux/stddef.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
extern int sysctl_ip_dynaddr; extern int sysctl_ip_dynaddr;
extern int sysctl_ip_default_ttl; extern int sysctl_ip_default_ttl;
...@@ -2131,7 +2133,295 @@ static int tcp_v4_destroy_sock(struct sock *sk) ...@@ -2131,7 +2133,295 @@ static int tcp_v4_destroy_sock(struct sock *sk)
return 0; return 0;
} }
#ifdef CONFIG_PROC_FS
/* Proc filesystem TCP sock list dumping. */ /* Proc filesystem TCP sock list dumping. */
enum tcp_seq_states {
TCP_SEQ_STATE_LISTENING,
TCP_SEQ_STATE_OPENREQ,
TCP_SEQ_STATE_ESTABLISHED,
TCP_SEQ_STATE_TIME_WAIT,
};
struct tcp_iter_state {
enum tcp_seq_states state;
struct sock *syn_wait_sk;
int bucket, sbucket, num, uid;
};
static void *listening_get_first(struct seq_file *seq)
{
struct tcp_iter_state* st = seq->private;
void *rc = NULL;
for (st->bucket = 0; st->bucket < TCP_LHTABLE_SIZE; ++st->bucket) {
struct open_request *req;
struct tcp_opt *tp;
struct sock *sk = tcp_listening_hash[st->bucket];
if (!sk)
continue;
++st->num;
if (TCP_INET_FAMILY(sk->family)) {
rc = sk;
goto out;
}
tp = tcp_sk(sk);
read_lock_bh(&tp->syn_wait_lock);
if (tp->listen_opt && tp->listen_opt->qlen) {
st->uid = sock_i_uid(sk);
st->syn_wait_sk = sk;
st->state = TCP_SEQ_STATE_OPENREQ;
for (st->sbucket = 0; st->sbucket < TCP_SYNQ_HSIZE;
++st->sbucket) {
for (req = tp->listen_opt->syn_table[st->sbucket];
req; req = req->dl_next, ++st->num) {
if (!TCP_INET_FAMILY(req->class->family))
continue;
rc = req;
goto out;
}
}
st->state = TCP_SEQ_STATE_LISTENING;
}
read_unlock_bh(&tp->syn_wait_lock);
}
out:
return rc;
}
static void *listening_get_next(struct seq_file *seq, void *cur)
{
struct tcp_opt *tp;
struct sock *sk = cur;
struct tcp_iter_state* st = seq->private;
if (st->state == TCP_SEQ_STATE_OPENREQ) {
struct open_request *req = cur;
tp = tcp_sk(st->syn_wait_sk);
req = req->dl_next;
while (1) {
while (req) {
++st->num;
if (TCP_INET_FAMILY(req->class->family)) {
cur = req;
goto out;
}
req = req->dl_next;
}
if (++st->sbucket >= TCP_SYNQ_HSIZE)
break;
get_req:
req = tp->listen_opt->syn_table[st->sbucket];
}
sk = st->syn_wait_sk->next;
st->state = TCP_SEQ_STATE_LISTENING;
read_unlock_bh(&tp->syn_wait_lock);
} else
sk = sk->next;
get_sk:
while (sk) {
if (TCP_INET_FAMILY(sk->family)) {
cur = sk;
goto out;
}
tp = tcp_sk(sk);
read_lock_bh(&tp->syn_wait_lock);
if (tp->listen_opt && tp->listen_opt->qlen) {
st->uid = sock_i_uid(sk);
st->syn_wait_sk = sk;
st->state = TCP_SEQ_STATE_OPENREQ;
st->sbucket = 0;
goto get_req;
}
read_unlock_bh(&tp->syn_wait_lock);
}
if (++st->bucket < TCP_LHTABLE_SIZE) {
sk = tcp_listening_hash[st->bucket];
goto get_sk;
}
cur = NULL;
out:
return cur;
}
static void *listening_get_idx(struct seq_file *seq, loff_t *pos)
{
void *rc = listening_get_first(seq);
if (rc)
while (*pos && (rc = listening_get_next(seq, rc)))
--*pos;
return *pos ? NULL : rc;
}
static void *established_get_first(struct seq_file *seq)
{
struct tcp_iter_state* st = seq->private;
void *rc = NULL;
for (st->bucket = 0; st->bucket < tcp_ehash_size; ++st->bucket) {
struct sock *sk;
struct tcp_tw_bucket *tw;
read_lock(&tcp_ehash[st->bucket].lock);
for (sk = tcp_ehash[st->bucket].chain; sk;
sk = sk->next, ++st->num) {
if (!TCP_INET_FAMILY(sk->family))
continue;
rc = sk;
goto out;
}
st->state = TCP_SEQ_STATE_TIME_WAIT;
for (tw = (struct tcp_tw_bucket *)
tcp_ehash[st->bucket + tcp_ehash_size].chain;
tw; tw = (struct tcp_tw_bucket *)tw->next, ++st->num) {
if (!TCP_INET_FAMILY(tw->family))
continue;
rc = tw;
goto out;
}
read_unlock(&tcp_ehash[st->bucket].lock);
st->state = TCP_SEQ_STATE_ESTABLISHED;
}
out:
return rc;
}
static void *established_get_next(struct seq_file *seq, void *cur)
{
struct sock *sk = cur;
struct tcp_tw_bucket *tw;
struct tcp_iter_state* st = seq->private;
if (st->state == TCP_SEQ_STATE_TIME_WAIT) {
tw = cur;
tw = (struct tcp_tw_bucket *)tw->next;
get_tw:
while (tw && !TCP_INET_FAMILY(tw->family)) {
++st->num;
tw = (struct tcp_tw_bucket *)tw->next;
}
if (tw) {
cur = tw;
goto out;
}
read_unlock(&tcp_ehash[st->bucket].lock);
st->state = TCP_SEQ_STATE_ESTABLISHED;
if (++st->bucket < tcp_ehash_size) {
read_lock(&tcp_ehash[st->bucket].lock);
sk = tcp_ehash[st->bucket].chain;
} else {
cur = NULL;
goto out;
}
} else
sk = sk->next;
while (sk && !TCP_INET_FAMILY(sk->family)) {
++st->num;
sk = sk->next;
}
if (!sk) {
st->state = TCP_SEQ_STATE_TIME_WAIT;
tw = (struct tcp_tw_bucket *)
tcp_ehash[st->bucket + tcp_ehash_size].chain;
goto get_tw;
}
cur = sk;
out:
return cur;
}
static void *established_get_idx(struct seq_file *seq, loff_t pos)
{
void *rc = established_get_first(seq);
if (rc)
while (pos && (rc = established_get_next(seq, rc)))
--pos;
return pos ? NULL : rc;
}
static void *tcp_get_idx(struct seq_file *seq, loff_t pos)
{
void *rc;
struct tcp_iter_state* st = seq->private;
tcp_listen_lock();
st->state = TCP_SEQ_STATE_LISTENING;
rc = listening_get_idx(seq, &pos);
if (!rc) {
tcp_listen_unlock();
local_bh_disable();
st->state = TCP_SEQ_STATE_ESTABLISHED;
rc = established_get_idx(seq, pos);
}
return rc;
}
static void *tcp_seq_start(struct seq_file *seq, loff_t *pos)
{
return *pos ? tcp_get_idx(seq, *pos - 1) : (void *)1;
}
static void *tcp_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
void *rc = NULL;
struct tcp_iter_state* st;
if (v == (void *)1) {
rc = tcp_get_idx(seq, 0);
goto out;
}
st = seq->private;
switch (st->state) {
case TCP_SEQ_STATE_OPENREQ:
case TCP_SEQ_STATE_LISTENING:
rc = listening_get_next(seq, v);
if (!rc) {
tcp_listen_unlock();
local_bh_disable();
st->state = TCP_SEQ_STATE_ESTABLISHED;
rc = established_get_first(seq);
}
break;
case TCP_SEQ_STATE_ESTABLISHED:
case TCP_SEQ_STATE_TIME_WAIT:
rc = established_get_next(seq, v);
break;
}
out:
++*pos;
return rc;
}
static void tcp_seq_stop(struct seq_file *seq, void *v)
{
struct tcp_iter_state* st = seq->private;
switch (st->state) {
case TCP_SEQ_STATE_OPENREQ:
if (v) {
struct tcp_opt *tp = tcp_sk(st->syn_wait_sk);
read_unlock_bh(&tp->syn_wait_lock);
}
case TCP_SEQ_STATE_LISTENING:
tcp_listen_unlock();
break;
case TCP_SEQ_STATE_TIME_WAIT:
case TCP_SEQ_STATE_ESTABLISHED:
if (v)
read_unlock(&tcp_ehash[st->bucket].lock);
local_bh_enable();
break;
}
}
static void get_openreq(struct sock *sk, struct open_request *req, static void get_openreq(struct sock *sk, struct open_request *req,
char *tmpbuf, int i, int uid) char *tmpbuf, int i, int uid)
{ {
...@@ -2219,137 +2509,89 @@ static void get_timewait_sock(struct tcp_tw_bucket *tw, char *tmpbuf, int i) ...@@ -2219,137 +2509,89 @@ static void get_timewait_sock(struct tcp_tw_bucket *tw, char *tmpbuf, int i)
#define TMPSZ 150 #define TMPSZ 150
int tcp_get_info(char *buffer, char **start, off_t offset, int length) static int tcp_seq_show(struct seq_file *seq, void *v)
{ {
int len = 0, num = 0, i; struct tcp_iter_state* st;
off_t begin, pos = 0;
char tmpbuf[TMPSZ + 1]; char tmpbuf[TMPSZ + 1];
if (offset < TMPSZ) if (v == (void *)1) {
len += sprintf(buffer, "%-*s\n", TMPSZ - 1, seq_printf(seq, "%-*s\n", TMPSZ - 1,
" sl local_address rem_address st tx_queue " " sl local_address rem_address st tx_queue "
"rx_queue tr tm->when retrnsmt uid timeout " "rx_queue tr tm->when retrnsmt uid timeout "
"inode"); "inode");
goto out;
pos = TMPSZ;
/* First, walk listening socket table. */
tcp_listen_lock();
for (i = 0; i < TCP_LHTABLE_SIZE; i++) {
struct sock *sk;
struct tcp_listen_opt *lopt;
int k;
for (sk = tcp_listening_hash[i]; sk; sk = sk->next, num++) {
struct open_request *req;
int uid;
struct tcp_opt *tp = tcp_sk(sk);
if (!TCP_INET_FAMILY(sk->family))
goto skip_listen;
pos += TMPSZ;
if (pos >= offset) {
get_tcp_sock(sk, tmpbuf, num);
len += sprintf(buffer + len, "%-*s\n",
TMPSZ - 1, tmpbuf);
if (pos >= offset + length) {
tcp_listen_unlock();
goto out_no_bh;
}
}
skip_listen:
uid = sock_i_uid(sk);
read_lock_bh(&tp->syn_wait_lock);
lopt = tp->listen_opt;
if (lopt && lopt->qlen) {
for (k = 0; k < TCP_SYNQ_HSIZE; k++) {
for (req = lopt->syn_table[k];
req; req = req->dl_next, num++) {
if (!TCP_INET_FAMILY(req->class->family))
continue;
pos += TMPSZ;
if (pos <= offset)
continue;
get_openreq(sk, req, tmpbuf,
num, uid);
len += sprintf(buffer + len,
"%-*s\n",
TMPSZ - 1,
tmpbuf);
if (pos >= offset + length) {
read_unlock_bh(&tp->syn_wait_lock);
tcp_listen_unlock();
goto out_no_bh;
}
}
}
}
read_unlock_bh(&tp->syn_wait_lock);
/* Completed requests are in normal socket hash table */
}
} }
tcp_listen_unlock(); st = seq->private;
local_bh_disable(); switch (st->state) {
case TCP_SEQ_STATE_LISTENING:
case TCP_SEQ_STATE_ESTABLISHED:
get_tcp_sock(v, tmpbuf, st->num);
break;
case TCP_SEQ_STATE_OPENREQ:
get_openreq(st->syn_wait_sk, v, tmpbuf, st->num, st->uid);
break;
case TCP_SEQ_STATE_TIME_WAIT:
get_timewait_sock(v, tmpbuf, st->num);
break;
}
seq_printf(seq, "%-*s\n", TMPSZ - 1, tmpbuf);
out:
return 0;
}
/* Next, walk established hash chain. */ static struct seq_operations tcp_seq_ops = {
for (i = 0; i < tcp_ehash_size; i++) { .start = tcp_seq_start,
struct tcp_ehash_bucket *head = &tcp_ehash[i]; .next = tcp_seq_next,
struct sock *sk; .stop = tcp_seq_stop,
struct tcp_tw_bucket *tw; .show = tcp_seq_show,
};
read_lock(&head->lock); static int tcp_seq_open(struct inode *inode, struct file *file)
for (sk = head->chain; sk; sk = sk->next, num++) { {
if (!TCP_INET_FAMILY(sk->family)) struct seq_file *seq;
continue; int rc = -ENOMEM;
pos += TMPSZ; struct tcp_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL);
if (pos <= offset)
continue;
get_tcp_sock(sk, tmpbuf, num);
len += sprintf(buffer + len, "%-*s\n",
TMPSZ - 1, tmpbuf);
if (pos >= offset + length) {
read_unlock(&head->lock);
goto out;
}
}
for (tw = (struct tcp_tw_bucket *)tcp_ehash[i +
tcp_ehash_size].chain;
tw;
tw = (struct tcp_tw_bucket *)tw->next, num++) {
if (!TCP_INET_FAMILY(tw->family))
continue;
pos += TMPSZ;
if (pos <= offset)
continue;
get_timewait_sock(tw, tmpbuf, num);
len += sprintf(buffer + len, "%-*s\n",
TMPSZ - 1, tmpbuf);
if (pos >= offset + length) {
read_unlock(&head->lock);
goto out;
}
}
read_unlock(&head->lock);
}
if (!s)
goto out;
rc = seq_open(file, &tcp_seq_ops);
if (rc)
goto out_kfree;
seq = file->private_data;
seq->private = s;
memset(s, 0, sizeof(*s));
out: out:
local_bh_enable(); return rc;
out_no_bh: out_kfree:
kfree(s);
goto out;
}
static struct file_operations tcp_seq_fops = {
.open = tcp_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = ip_seq_release,
};
begin = len - (pos - offset); int __init tcp_proc_init(void)
*start = buffer + begin; {
len -= begin; int rc = 0;
if (len > length) struct proc_dir_entry *p = create_proc_entry("tcp", S_IRUGO, proc_net);
len = length;
if (len < 0) if (p)
len = 0; p->proc_fops = &tcp_seq_fops;
return len; else
rc = -ENOMEM;
return rc;
}
void __init tcp_proc_exit(void)
{
remove_proc_entry("tcp", proc_net);
} }
#endif /* CONFIG_PROC_FS */
struct proto tcp_prot = { struct proto tcp_prot = {
.name = "TCP", .name = "TCP",
......
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