Skip to content

L
linux
Commit 58cc0c7f authored by Linus Torvalds's avatar Linus Torvalds
Browse files
Options

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

into home.transmeta.com:/home/torvalds/v2.5/linux
parents 4adefe3e d9e50ea8
Show whitespace changes
Inline Side-by-side
Showing with 805 additions and 145 deletions
crypto/Kconfig
View file @ 58cc0c7f
......@@ -82,6 +82,18 @@ config CRYPTO_TWOFISH
See also:
http://www.counterpane.com/twofish.html
config CRYPTO_SERPENT
tristate "Serpent cipher algorithm"
depends on CRYPTO
help
Serpent cipher algorithm, by Anderson, Biham & Knudsen.
Keys are allowed to be from 0 to 256 bits in length, in steps
of 8 bits.
See also:
http://www.cl.cam.ac.uk/~rja14/serpent.html
config CRYPTO_TEST
tristate "Testing module"
depends on CRYPTO
......
crypto/Makefile
View file @ 58cc0c7f
......@@ -17,6 +17,7 @@ obj-$(CONFIG_CRYPTO_SHA256) += sha256.o
obj-$(CONFIG_CRYPTO_DES) += des.o
obj-$(CONFIG_CRYPTO_BLOWFISH) += blowfish.o
obj-$(CONFIG_CRYPTO_TWOFISH) += twofish.o
obj-$(CONFIG_CRYPTO_SERPENT) += serpent.o
obj-$(CONFIG_CRYPTO_TEST) += tcrypt.o
......
crypto/serpent.c 0 → 100644
View file @ 58cc0c7f
/*
* Cryptographic API.
*
* Serpent Cipher Algorithm.
*
* Copyright (C) 2002 Dag Arne Osvik <osvik@ii.uib.no>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <asm/byteorder.h>
#include <linux/crypto.h>
/* Key is padded to the maximum of 256 bits before round key generation.
* Any key length <= 256 bits (32 bytes) is allowed by the algorithm.
*/
#define SERPENT_MIN_KEY_SIZE 0
#define SERPENT_MAX_KEY_SIZE 32
#define SERPENT_EXPKEY_WORDS 132
#define SERPENT_BLOCK_SIZE 16
#define PHI 0x9e3779b9UL
#define ROL(x,r) ((x) = ((x) << (r)) | ((x) >> (32-(r))))
#define ROR(x,r) ((x) = ((x) >> (r)) | ((x) << (32-(r))))
#define keyiter(a,b,c,d,i,j) \
b ^= d; b ^= c; b ^= a; b ^= PHI ^ i; ROL(b,11); k[j] = b;
#define loadkeys(x0,x1,x2,x3,i) \
x0=k[i]; x1=k[i+1]; x2=k[i+2]; x3=k[i+3];
#define storekeys(x0,x1,x2,x3,i) \
k[i]=x0; k[i+1]=x1; k[i+2]=x2; k[i+3]=x3;
#define K(x0,x1,x2,x3,i) \
x3 ^= k[4*(i)+3]; x2 ^= k[4*(i)+2]; \
x1 ^= k[4*(i)+1]; x0 ^= k[4*(i)+0];
#define LK(x0,x1,x2,x3,x4,i) \
ROL(x0,13); \
ROL(x2,3); x1 ^= x0; x4 = x0 << 3; \
x3 ^= x2; x1 ^= x2; \
ROL(x1,1); x3 ^= x4; \
ROL(x3,7); x4 = x1; \
x0 ^= x1; x4 <<= 7; x2 ^= x3; \
x0 ^= x3; x2 ^= x4; x3 ^= k[4*i+3]; \
x1 ^= k[4*i+1]; ROL(x0,5); ROL(x2,22); \
x0 ^= k[4*i+0]; x2 ^= k[4*i+2];
#define KL(x0,x1,x2,x3,x4,i) \
x0 ^= k[4*i+0]; x1 ^= k[4*i+1]; x2 ^= k[4*i+2]; \
x3 ^= k[4*i+3]; ROR(x0,5); ROR(x2,22); \
x4 = x1; x2 ^= x3; x0 ^= x3; \
x4 <<= 7; x0 ^= x1; ROR(x1,1); \
x2 ^= x4; ROR(x3,7); x4 = x0 << 3; \
x1 ^= x0; x3 ^= x4; ROR(x0,13); \
x1 ^= x2; x3 ^= x2; ROR(x2,3);
#define S0(x0,x1,x2,x3,x4) \
x4 = x3; \
x3 |= x0; x0 ^= x4; x4 ^= x2; \
x4 =~ x4; x3 ^= x1; x1 &= x0; \
x1 ^= x4; x2 ^= x0; x0 ^= x3; \
x4 |= x0; x0 ^= x2; x2 &= x1; \
x3 ^= x2; x1 =~ x1; x2 ^= x4; \
x1 ^= x2;
#define S1(x0,x1,x2,x3,x4) \
x4 = x1; \
x1 ^= x0; x0 ^= x3; x3 =~ x3; \
x4 &= x1; x0 |= x1; x3 ^= x2; \
x0 ^= x3; x1 ^= x3; x3 ^= x4; \
x1 |= x4; x4 ^= x2; x2 &= x0; \
x2 ^= x1; x1 |= x0; x0 =~ x0; \
x0 ^= x2; x4 ^= x1;
#define S2(x0,x1,x2,x3,x4) \
x3 =~ x3; \
x1 ^= x0; x4 = x0; x0 &= x2; \
x0 ^= x3; x3 |= x4; x2 ^= x1; \
x3 ^= x1; x1 &= x0; x0 ^= x2; \
x2 &= x3; x3 |= x1; x0 =~ x0; \
x3 ^= x0; x4 ^= x0; x0 ^= x2; \
x1 |= x2;
#define S3(x0,x1,x2,x3,x4) \
x4 = x1; \
x1 ^= x3; x3 |= x0; x4 &= x0; \
x0 ^= x2; x2 ^= x1; x1 &= x3; \
x2 ^= x3; x0 |= x4; x4 ^= x3; \
x1 ^= x0; x0 &= x3; x3 &= x4; \
x3 ^= x2; x4 |= x1; x2 &= x1; \
x4 ^= x3; x0 ^= x3; x3 ^= x2;
#define S4(x0,x1,x2,x3,x4) \
x4 = x3; \
x3 &= x0; x0 ^= x4; \
x3 ^= x2; x2 |= x4; x0 ^= x1; \
x4 ^= x3; x2 |= x0; \
x2 ^= x1; x1 &= x0; \
x1 ^= x4; x4 &= x2; x2 ^= x3; \
x4 ^= x0; x3 |= x1; x1 =~ x1; \
x3 ^= x0;
#define S5(x0,x1,x2,x3,x4) \
x4 = x1; x1 |= x0; \
x2 ^= x1; x3 =~ x3; x4 ^= x0; \
x0 ^= x2; x1 &= x4; x4 |= x3; \
x4 ^= x0; x0 &= x3; x1 ^= x3; \
x3 ^= x2; x0 ^= x1; x2 &= x4; \
x1 ^= x2; x2 &= x0; \
x3 ^= x2;
#define S6(x0,x1,x2,x3,x4) \
x4 = x1; \
x3 ^= x0; x1 ^= x2; x2 ^= x0; \
x0 &= x3; x1 |= x3; x4 =~ x4; \
x0 ^= x1; x1 ^= x2; \
x3 ^= x4; x4 ^= x0; x2 &= x0; \
x4 ^= x1; x2 ^= x3; x3 &= x1; \
x3 ^= x0; x1 ^= x2;
#define S7(x0,x1,x2,x3,x4) \
x1 =~ x1; \
x4 = x1; x0 =~ x0; x1 &= x2; \
x1 ^= x3; x3 |= x4; x4 ^= x2; \
x2 ^= x3; x3 ^= x0; x0 |= x1; \
x2 &= x0; x0 ^= x4; x4 ^= x3; \
x3 &= x0; x4 ^= x1; \
x2 ^= x4; x3 ^= x1; x4 |= x0; \
x4 ^= x1;
#define SI0(x0,x1,x2,x3,x4) \
x4 = x3; x1 ^= x0; \
x3 |= x1; x4 ^= x1; x0 =~ x0; \
x2 ^= x3; x3 ^= x0; x0 &= x1; \
x0 ^= x2; x2 &= x3; x3 ^= x4; \
x2 ^= x3; x1 ^= x3; x3 &= x0; \
x1 ^= x0; x0 ^= x2; x4 ^= x3;
#define SI1(x0,x1,x2,x3,x4) \
x1 ^= x3; x4 = x0; \
x0 ^= x2; x2 =~ x2; x4 |= x1; \
x4 ^= x3; x3 &= x1; x1 ^= x2; \
x2 &= x4; x4 ^= x1; x1 |= x3; \
x3 ^= x0; x2 ^= x0; x0 |= x4; \
x2 ^= x4; x1 ^= x0; \
x4 ^= x1;
#define SI2(x0,x1,x2,x3,x4) \
x2 ^= x1; x4 = x3; x3 =~ x3; \
x3 |= x2; x2 ^= x4; x4 ^= x0; \
x3 ^= x1; x1 |= x2; x2 ^= x0; \
x1 ^= x4; x4 |= x3; x2 ^= x3; \
x4 ^= x2; x2 &= x1; \
x2 ^= x3; x3 ^= x4; x4 ^= x0;
#define SI3(x0,x1,x2,x3,x4) \
x2 ^= x1; \
x4 = x1; x1 &= x2; \
x1 ^= x0; x0 |= x4; x4 ^= x3; \
x0 ^= x3; x3 |= x1; x1 ^= x2; \
x1 ^= x3; x0 ^= x2; x2 ^= x3; \
x3 &= x1; x1 ^= x0; x0 &= x2; \
x4 ^= x3; x3 ^= x0; x0 ^= x1;
#define SI4(x0,x1,x2,x3,x4) \
x2 ^= x3; x4 = x0; x0 &= x1; \
x0 ^= x2; x2 |= x3; x4 =~ x4; \
x1 ^= x0; x0 ^= x2; x2 &= x4; \
x2 ^= x0; x0 |= x4; \
x0 ^= x3; x3 &= x2; \
x4 ^= x3; x3 ^= x1; x1 &= x0; \
x4 ^= x1; x0 ^= x3;
#define SI5(x0,x1,x2,x3,x4) \
x4 = x1; x1 |= x2; \
x2 ^= x4; x1 ^= x3; x3 &= x4; \
x2 ^= x3; x3 |= x0; x0 =~ x0; \
x3 ^= x2; x2 |= x0; x4 ^= x1; \
x2 ^= x4; x4 &= x0; x0 ^= x1; \
x1 ^= x3; x0 &= x2; x2 ^= x3; \
x0 ^= x2; x2 ^= x4; x4 ^= x3;
#define SI6(x0,x1,x2,x3,x4) \
x0 ^= x2; \
x4 = x0; x0 &= x3; x2 ^= x3; \
x0 ^= x2; x3 ^= x1; x2 |= x4; \
x2 ^= x3; x3 &= x0; x0 =~ x0; \
x3 ^= x1; x1 &= x2; x4 ^= x0; \
x3 ^= x4; x4 ^= x2; x0 ^= x1; \
x2 ^= x0;
#define SI7(x0,x1,x2,x3,x4) \
x4 = x3; x3 &= x0; x0 ^= x2; \
x2 |= x4; x4 ^= x1; x0 =~ x0; \
x1 |= x3; x4 ^= x0; x0 &= x2; \
x0 ^= x1; x1 &= x2; x3 ^= x2; \
x4 ^= x3; x2 &= x3; x3 |= x0; \
x1 ^= x4; x3 ^= x4; x4 &= x0; \
x4 ^= x2;
struct serpent_ctx {
u8 iv[SERPENT_BLOCK_SIZE];
u32 expkey[SERPENT_EXPKEY_WORDS];
};
static int setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags)
{
u32 *k = ((struct serpent_ctx *)ctx)->expkey;
u8 *k8 = (u8 *)k;
u32 r0,r1,r2,r3,r4;
int i;
if ((keylen < SERPENT_MIN_KEY_SIZE)
|| (keylen > SERPENT_MAX_KEY_SIZE))
{
*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
return -EINVAL;
}
/* Copy key, add padding */
for (i = 0; i < keylen; ++i)
k8[i] = key[i];
if (i < SERPENT_MAX_KEY_SIZE)
k8[i++] = 1;
while (i < SERPENT_MAX_KEY_SIZE)
k8[i++] = 0;
/* Expand key using polynomial */
r0 = le32_to_cpu(k[3]);
r1 = le32_to_cpu(k[4]);
r2 = le32_to_cpu(k[5]);
r3 = le32_to_cpu(k[6]);
r4 = le32_to_cpu(k[7]);
keyiter(le32_to_cpu(k[0]),r0,r4,r2,0,0);
keyiter(le32_to_cpu(k[1]),r1,r0,r3,1,1);
keyiter(le32_to_cpu(k[2]),r2,r1,r4,2,2);
keyiter(le32_to_cpu(k[3]),r3,r2,r0,3,3);
keyiter(le32_to_cpu(k[4]),r4,r3,r1,4,4);
keyiter(le32_to_cpu(k[5]),r0,r4,r2,5,5);
keyiter(le32_to_cpu(k[6]),r1,r0,r3,6,6);
keyiter(le32_to_cpu(k[7]),r2,r1,r4,7,7);
keyiter(k[ 0],r3,r2,r0, 8, 8); keyiter(k[ 1],r4,r3,r1, 9, 9);
keyiter(k[ 2],r0,r4,r2, 10, 10); keyiter(k[ 3],r1,r0,r3, 11, 11);
keyiter(k[ 4],r2,r1,r4, 12, 12); keyiter(k[ 5],r3,r2,r0, 13, 13);
keyiter(k[ 6],r4,r3,r1, 14, 14); keyiter(k[ 7],r0,r4,r2, 15, 15);
keyiter(k[ 8],r1,r0,r3, 16, 16); keyiter(k[ 9],r2,r1,r4, 17, 17);
keyiter(k[ 10],r3,r2,r0, 18, 18); keyiter(k[ 11],r4,r3,r1, 19, 19);
keyiter(k[ 12],r0,r4,r2, 20, 20); keyiter(k[ 13],r1,r0,r3, 21, 21);
keyiter(k[ 14],r2,r1,r4, 22, 22); keyiter(k[ 15],r3,r2,r0, 23, 23);
keyiter(k[ 16],r4,r3,r1, 24, 24); keyiter(k[ 17],r0,r4,r2, 25, 25);
keyiter(k[ 18],r1,r0,r3, 26, 26); keyiter(k[ 19],r2,r1,r4, 27, 27);
keyiter(k[ 20],r3,r2,r0, 28, 28); keyiter(k[ 21],r4,r3,r1, 29, 29);
keyiter(k[ 22],r0,r4,r2, 30, 30); keyiter(k[ 23],r1,r0,r3, 31, 31);
k += 50;
keyiter(k[-26],r2,r1,r4, 32,-18); keyiter(k[-25],r3,r2,r0, 33,-17);
keyiter(k[-24],r4,r3,r1, 34,-16); keyiter(k[-23],r0,r4,r2, 35,-15);
keyiter(k[-22],r1,r0,r3, 36,-14); keyiter(k[-21],r2,r1,r4, 37,-13);
keyiter(k[-20],r3,r2,r0, 38,-12); keyiter(k[-19],r4,r3,r1, 39,-11);
keyiter(k[-18],r0,r4,r2, 40,-10); keyiter(k[-17],r1,r0,r3, 41, -9);
keyiter(k[-16],r2,r1,r4, 42, -8); keyiter(k[-15],r3,r2,r0, 43, -7);
keyiter(k[-14],r4,r3,r1, 44, -6); keyiter(k[-13],r0,r4,r2, 45, -5);
keyiter(k[-12],r1,r0,r3, 46, -4); keyiter(k[-11],r2,r1,r4, 47, -3);
keyiter(k[-10],r3,r2,r0, 48, -2); keyiter(k[ -9],r4,r3,r1, 49, -1);
keyiter(k[ -8],r0,r4,r2, 50, 0); keyiter(k[ -7],r1,r0,r3, 51, 1);
keyiter(k[ -6],r2,r1,r4, 52, 2); keyiter(k[ -5],r3,r2,r0, 53, 3);
keyiter(k[ -4],r4,r3,r1, 54, 4); keyiter(k[ -3],r0,r4,r2, 55, 5);
keyiter(k[ -2],r1,r0,r3, 56, 6); keyiter(k[ -1],r2,r1,r4, 57, 7);
keyiter(k[ 0],r3,r2,r0, 58, 8); keyiter(k[ 1],r4,r3,r1, 59, 9);
keyiter(k[ 2],r0,r4,r2, 60, 10); keyiter(k[ 3],r1,r0,r3, 61, 11);
keyiter(k[ 4],r2,r1,r4, 62, 12); keyiter(k[ 5],r3,r2,r0, 63, 13);
keyiter(k[ 6],r4,r3,r1, 64, 14); keyiter(k[ 7],r0,r4,r2, 65, 15);
keyiter(k[ 8],r1,r0,r3, 66, 16); keyiter(k[ 9],r2,r1,r4, 67, 17);
keyiter(k[ 10],r3,r2,r0, 68, 18); keyiter(k[ 11],r4,r3,r1, 69, 19);
keyiter(k[ 12],r0,r4,r2, 70, 20); keyiter(k[ 13],r1,r0,r3, 71, 21);
keyiter(k[ 14],r2,r1,r4, 72, 22); keyiter(k[ 15],r3,r2,r0, 73, 23);
keyiter(k[ 16],r4,r3,r1, 74, 24); keyiter(k[ 17],r0,r4,r2, 75, 25);
keyiter(k[ 18],r1,r0,r3, 76, 26); keyiter(k[ 19],r2,r1,r4, 77, 27);
keyiter(k[ 20],r3,r2,r0, 78, 28); keyiter(k[ 21],r4,r3,r1, 79, 29);
keyiter(k[ 22],r0,r4,r2, 80, 30); keyiter(k[ 23],r1,r0,r3, 81, 31);
k += 50;
keyiter(k[-26],r2,r1,r4, 82,-18); keyiter(k[-25],r3,r2,r0, 83,-17);
keyiter(k[-24],r4,r3,r1, 84,-16); keyiter(k[-23],r0,r4,r2, 85,-15);
keyiter(k[-22],r1,r0,r3, 86,-14); keyiter(k[-21],r2,r1,r4, 87,-13);
keyiter(k[-20],r3,r2,r0, 88,-12); keyiter(k[-19],r4,r3,r1, 89,-11);
keyiter(k[-18],r0,r4,r2, 90,-10); keyiter(k[-17],r1,r0,r3, 91, -9);
keyiter(k[-16],r2,r1,r4, 92, -8); keyiter(k[-15],r3,r2,r0, 93, -7);
keyiter(k[-14],r4,r3,r1, 94, -6); keyiter(k[-13],r0,r4,r2, 95, -5);
keyiter(k[-12],r1,r0,r3, 96, -4); keyiter(k[-11],r2,r1,r4, 97, -3);
keyiter(k[-10],r3,r2,r0, 98, -2); keyiter(k[ -9],r4,r3,r1, 99, -1);
keyiter(k[ -8],r0,r4,r2,100, 0); keyiter(k[ -7],r1,r0,r3,101, 1);
keyiter(k[ -6],r2,r1,r4,102, 2); keyiter(k[ -5],r3,r2,r0,103, 3);
keyiter(k[ -4],r4,r3,r1,104, 4); keyiter(k[ -3],r0,r4,r2,105, 5);
keyiter(k[ -2],r1,r0,r3,106, 6); keyiter(k[ -1],r2,r1,r4,107, 7);
keyiter(k[ 0],r3,r2,r0,108, 8); keyiter(k[ 1],r4,r3,r1,109, 9);
keyiter(k[ 2],r0,r4,r2,110, 10); keyiter(k[ 3],r1,r0,r3,111, 11);
keyiter(k[ 4],r2,r1,r4,112, 12); keyiter(k[ 5],r3,r2,r0,113, 13);
keyiter(k[ 6],r4,r3,r1,114, 14); keyiter(k[ 7],r0,r4,r2,115, 15);
keyiter(k[ 8],r1,r0,r3,116, 16); keyiter(k[ 9],r2,r1,r4,117, 17);
keyiter(k[ 10],r3,r2,r0,118, 18); keyiter(k[ 11],r4,r3,r1,119, 19);
keyiter(k[ 12],r0,r4,r2,120, 20); keyiter(k[ 13],r1,r0,r3,121, 21);
keyiter(k[ 14],r2,r1,r4,122, 22); keyiter(k[ 15],r3,r2,r0,123, 23);
keyiter(k[ 16],r4,r3,r1,124, 24); keyiter(k[ 17],r0,r4,r2,125, 25);
keyiter(k[ 18],r1,r0,r3,126, 26); keyiter(k[ 19],r2,r1,r4,127, 27);
keyiter(k[ 20],r3,r2,r0,128, 28); keyiter(k[ 21],r4,r3,r1,129, 29);
keyiter(k[ 22],r0,r4,r2,130, 30); keyiter(k[ 23],r1,r0,r3,131, 31);
/* Apply S-boxes */
S3(r3,r4,r0,r1,r2); storekeys(r1,r2,r4,r3, 28); loadkeys(r1,r2,r4,r3, 24);
S4(r1,r2,r4,r3,r0); storekeys(r2,r4,r3,r0, 24); loadkeys(r2,r4,r3,r0, 20);
S5(r2,r4,r3,r0,r1); storekeys(r1,r2,r4,r0, 20); loadkeys(r1,r2,r4,r0, 16);
S6(r1,r2,r4,r0,r3); storekeys(r4,r3,r2,r0, 16); loadkeys(r4,r3,r2,r0, 12);
S7(r4,r3,r2,r0,r1); storekeys(r1,r2,r0,r4, 12); loadkeys(r1,r2,r0,r4, 8);
S0(r1,r2,r0,r4,r3); storekeys(r0,r2,r4,r1, 8); loadkeys(r0,r2,r4,r1, 4);
S1(r0,r2,r4,r1,r3); storekeys(r3,r4,r1,r0, 4); loadkeys(r3,r4,r1,r0, 0);
S2(r3,r4,r1,r0,r2); storekeys(r2,r4,r3,r0, 0); loadkeys(r2,r4,r3,r0, -4);
S3(r2,r4,r3,r0,r1); storekeys(r0,r1,r4,r2, -4); loadkeys(r0,r1,r4,r2, -8);
S4(r0,r1,r4,r2,r3); storekeys(r1,r4,r2,r3, -8); loadkeys(r1,r4,r2,r3,-12);
S5(r1,r4,r2,r3,r0); storekeys(r0,r1,r4,r3,-12); loadkeys(r0,r1,r4,r3,-16);
S6(r0,r1,r4,r3,r2); storekeys(r4,r2,r1,r3,-16); loadkeys(r4,r2,r1,r3,-20);
S7(r4,r2,r1,r3,r0); storekeys(r0,r1,r3,r4,-20); loadkeys(r0,r1,r3,r4,-24);
S0(r0,r1,r3,r4,r2); storekeys(r3,r1,r4,r0,-24); loadkeys(r3,r1,r4,r0,-28);
k -= 50;
S1(r3,r1,r4,r0,r2); storekeys(r2,r4,r0,r3, 22); loadkeys(r2,r4,r0,r3, 18);
S2(r2,r4,r0,r3,r1); storekeys(r1,r4,r2,r3, 18); loadkeys(r1,r4,r2,r3, 14);
S3(r1,r4,r2,r3,r0); storekeys(r3,r0,r4,r1, 14); loadkeys(r3,r0,r4,r1, 10);
S4(r3,r0,r4,r1,r2); storekeys(r0,r4,r1,r2, 10); loadkeys(r0,r4,r1,r2, 6);
S5(r0,r4,r1,r2,r3); storekeys(r3,r0,r4,r2, 6); loadkeys(r3,r0,r4,r2, 2);
S6(r3,r0,r4,r2,r1); storekeys(r4,r1,r0,r2, 2); loadkeys(r4,r1,r0,r2, -2);
S7(r4,r1,r0,r2,r3); storekeys(r3,r0,r2,r4, -2); loadkeys(r3,r0,r2,r4, -6);
S0(r3,r0,r2,r4,r1); storekeys(r2,r0,r4,r3, -6); loadkeys(r2,r0,r4,r3,-10);
S1(r2,r0,r4,r3,r1); storekeys(r1,r4,r3,r2,-10); loadkeys(r1,r4,r3,r2,-14);
S2(r1,r4,r3,r2,r0); storekeys(r0,r4,r1,r2,-14); loadkeys(r0,r4,r1,r2,-18);
S3(r0,r4,r1,r2,r3); storekeys(r2,r3,r4,r0,-18); loadkeys(r2,r3,r4,r0,-22);
k -= 50;
S4(r2,r3,r4,r0,r1); storekeys(r3,r4,r0,r1, 28); loadkeys(r3,r4,r0,r1, 24);
S5(r3,r4,r0,r1,r2); storekeys(r2,r3,r4,r1, 24); loadkeys(r2,r3,r4,r1, 20);
S6(r2,r3,r4,r1,r0); storekeys(r4,r0,r3,r1, 20); loadkeys(r4,r0,r3,r1, 16);
S7(r4,r0,r3,r1,r2); storekeys(r2,r3,r1,r4, 16); loadkeys(r2,r3,r1,r4, 12);
S0(r2,r3,r1,r4,r0); storekeys(r1,r3,r4,r2, 12); loadkeys(r1,r3,r4,r2, 8);
S1(r1,r3,r4,r2,r0); storekeys(r0,r4,r2,r1, 8); loadkeys(r0,r4,r2,r1, 4);
S2(r0,r4,r2,r1,r3); storekeys(r3,r4,r0,r1, 4); loadkeys(r3,r4,r0,r1, 0);
S3(r3,r4,r0,r1,r2); storekeys(r1,r2,r4,r3, 0);
return 0;
}
static void encrypt(void *ctx, u8 *dst, const u8 *src)
{
const u32
*k = ((struct serpent_ctx *)ctx)->expkey,
*s = (const u32 *)src;
u32 *d = (u32 *)dst,
r0, r1, r2, r3, r4;
/*
* Note: The conversions between u8* and u32* might cause trouble
* on architectures with stricter alignment rules than x86
*/
r0 = le32_to_cpu(s[0]);
r1 = le32_to_cpu(s[1]);
r2 = le32_to_cpu(s[2]);
r3 = le32_to_cpu(s[3]);
K(r0,r1,r2,r3,0);
S0(r0,r1,r2,r3,r4); LK(r2,r1,r3,r0,r4,1);
S1(r2,r1,r3,r0,r4); LK(r4,r3,r0,r2,r1,2);
S2(r4,r3,r0,r2,r1); LK(r1,r3,r4,r2,r0,3);
S3(r1,r3,r4,r2,r0); LK(r2,r0,r3,r1,r4,4);
S4(r2,r0,r3,r1,r4); LK(r0,r3,r1,r4,r2,5);
S5(r0,r3,r1,r4,r2); LK(r2,r0,r3,r4,r1,6);
S6(r2,r0,r3,r4,r1); LK(r3,r1,r0,r4,r2,7);
S7(r3,r1,r0,r4,r2); LK(r2,r0,r4,r3,r1,8);
S0(r2,r0,r4,r3,r1); LK(r4,r0,r3,r2,r1,9);
S1(r4,r0,r3,r2,r1); LK(r1,r3,r2,r4,r0,10);
S2(r1,r3,r2,r4,r0); LK(r0,r3,r1,r4,r2,11);
S3(r0,r3,r1,r4,r2); LK(r4,r2,r3,r0,r1,12);
S4(r4,r2,r3,r0,r1); LK(r2,r3,r0,r1,r4,13);
S5(r2,r3,r0,r1,r4); LK(r4,r2,r3,r1,r0,14);
S6(r4,r2,r3,r1,r0); LK(r3,r0,r2,r1,r4,15);
S7(r3,r0,r2,r1,r4); LK(r4,r2,r1,r3,r0,16);
S0(r4,r2,r1,r3,r0); LK(r1,r2,r3,r4,r0,17);
S1(r1,r2,r3,r4,r0); LK(r0,r3,r4,r1,r2,18);
S2(r0,r3,r4,r1,r2); LK(r2,r3,r0,r1,r4,19);
S3(r2,r3,r0,r1,r4); LK(r1,r4,r3,r2,r0,20);
S4(r1,r4,r3,r2,r0); LK(r4,r3,r2,r0,r1,21);
S5(r4,r3,r2,r0,r1); LK(r1,r4,r3,r0,r2,22);
S6(r1,r4,r3,r0,r2); LK(r3,r2,r4,r0,r1,23);
S7(r3,r2,r4,r0,r1); LK(r1,r4,r0,r3,r2,24);
S0(r1,r4,r0,r3,r2); LK(r0,r4,r3,r1,r2,25);
S1(r0,r4,r3,r1,r2); LK(r2,r3,r1,r0,r4,26);
S2(r2,r3,r1,r0,r4); LK(r4,r3,r2,r0,r1,27);
S3(r4,r3,r2,r0,r1); LK(r0,r1,r3,r4,r2,28);
S4(r0,r1,r3,r4,r2); LK(r1,r3,r4,r2,r0,29);
S5(r1,r3,r4,r2,r0); LK(r0,r1,r3,r2,r4,30);
S6(r0,r1,r3,r2,r4); LK(r3,r4,r1,r2,r0,31);
S7(r3,r4,r1,r2,r0); K(r0,r1,r2,r3,32);
d[0] = cpu_to_le32(r0);
d[1] = cpu_to_le32(r1);
d[2] = cpu_to_le32(r2);
d[3] = cpu_to_le32(r3);
}
static void decrypt(void *ctx, u8 *dst, const u8 *src)
{
const u32
*k = ((struct serpent_ctx *)ctx)->expkey,
*s = (const u32 *)src;
u32 *d = (u32 *)dst,
r0, r1, r2, r3, r4;
r0 = le32_to_cpu(s[0]);
r1 = le32_to_cpu(s[1]);
r2 = le32_to_cpu(s[2]);
r3 = le32_to_cpu(s[3]);
K(r0,r1,r2,r3,32);
SI7(r0,r1,r2,r3,r4); KL(r1,r3,r0,r4,r2,31);
SI6(r1,r3,r0,r4,r2); KL(r0,r2,r4,r1,r3,30);
SI5(r0,r2,r4,r1,r3); KL(r2,r3,r0,r4,r1,29);
SI4(r2,r3,r0,r4,r1); KL(r2,r0,r1,r4,r3,28);
SI3(r2,r0,r1,r4,r3); KL(r1,r2,r3,r4,r0,27);
SI2(r1,r2,r3,r4,r0); KL(r2,r0,r4,r3,r1,26);
SI1(r2,r0,r4,r3,r1); KL(r1,r0,r4,r3,r2,25);
SI0(r1,r0,r4,r3,r2); KL(r4,r2,r0,r1,r3,24);
SI7(r4,r2,r0,r1,r3); KL(r2,r1,r4,r3,r0,23);
SI6(r2,r1,r4,r3,r0); KL(r4,r0,r3,r2,r1,22);
SI5(r4,r0,r3,r2,r1); KL(r0,r1,r4,r3,r2,21);
SI4(r0,r1,r4,r3,r2); KL(r0,r4,r2,r3,r1,20);
SI3(r0,r4,r2,r3,r1); KL(r2,r0,r1,r3,r4,19);
SI2(r2,r0,r1,r3,r4); KL(r0,r4,r3,r1,r2,18);
SI1(r0,r4,r3,r1,r2); KL(r2,r4,r3,r1,r0,17);
SI0(r2,r4,r3,r1,r0); KL(r3,r0,r4,r2,r1,16);
SI7(r3,r0,r4,r2,r1); KL(r0,r2,r3,r1,r4,15);
SI6(r0,r2,r3,r1,r4); KL(r3,r4,r1,r0,r2,14);
SI5(r3,r4,r1,r0,r2); KL(r4,r2,r3,r1,r0,13);
SI4(r4,r2,r3,r1,r0); KL(r4,r3,r0,r1,r2,12);
SI3(r4,r3,r0,r1,r2); KL(r0,r4,r2,r1,r3,11);
SI2(r0,r4,r2,r1,r3); KL(r4,r3,r1,r2,r0,10);
SI1(r4,r3,r1,r2,r0); KL(r0,r3,r1,r2,r4,9);
SI0(r0,r3,r1,r2,r4); KL(r1,r4,r3,r0,r2,8);
SI7(r1,r4,r3,r0,r2); KL(r4,r0,r1,r2,r3,7);
SI6(r4,r0,r1,r2,r3); KL(r1,r3,r2,r4,r0,6);
SI5(r1,r3,r2,r4,r0); KL(r3,r0,r1,r2,r4,5);
SI4(r3,r0,r1,r2,r4); KL(r3,r1,r4,r2,r0,4);
SI3(r3,r1,r4,r2,r0); KL(r4,r3,r0,r2,r1,3);
SI2(r4,r3,r0,r2,r1); KL(r3,r1,r2,r0,r4,2);
SI1(r3,r1,r2,r0,r4); KL(r4,r1,r2,r0,r3,1);
SI0(r4,r1,r2,r0,r3); K(r2,r3,r1,r4,0);
d[0] = cpu_to_le32(r2);
d[1] = cpu_to_le32(r3);
d[2] = cpu_to_le32(r1);
d[3] = cpu_to_le32(r4);
}
static struct crypto_alg serpent_alg = {
.cra_name = "serpent",
.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
.cra_blocksize = SERPENT_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct serpent_ctx),
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(serpent_alg.cra_list),
.cra_u = { .cipher = {
.cia_min_keysize = SERPENT_MIN_KEY_SIZE,
.cia_max_keysize = SERPENT_MAX_KEY_SIZE,
.cia_ivsize = SERPENT_BLOCK_SIZE,
.cia_setkey = setkey,
.cia_encrypt = encrypt,
.cia_decrypt = decrypt } }
};
static int __init init(void)
{
return crypto_register_alg(&serpent_alg);
}
static void __exit fini(void)
{
crypto_unregister_alg(&serpent_alg);
}
module_init(init);
module_exit(fini);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Serpent Cipher Algorithm");
MODULE_AUTHOR("Dag Arne Osvik <osvik@ii.uib.no>");
crypto/tcrypt.c
View file @ 58cc0c7f
......@@ -48,7 +48,7 @@ static char *tvmem;
static char *check[] = {
"des", "md5", "des3_ede", "rot13", "sha1", "sha256", "blowfish",
"twofish",
"twofish", "serpent",
NULL
};
......@@ -1884,6 +1884,105 @@ test_twofish(void)
crypto_free_tfm(tfm);
}
void
test_serpent(void)
{
unsigned int ret, i, tsize;
u8 *p, *q, *key;
struct crypto_tfm *tfm;
struct serpent_tv *serp_tv;
struct scatterlist sg[1];
printk("\ntesting serpent encryption\n");
tfm = crypto_alloc_tfm("serpent", 0);
if (tfm == NULL) {
printk("failed to load transform for serpent (default ecb)\n");
return;
}
tsize = sizeof (serpent_enc_tv_template);
if (tsize > TVMEMSIZE) {
printk("template (%u) too big for tvmem (%u)\n", tsize,
TVMEMSIZE);
return;
}
memcpy(tvmem, serpent_enc_tv_template, tsize);
serp_tv = (void *) tvmem;
for (i = 0; i < SERPENT_ENC_TEST_VECTORS; i++) {
printk("test %u (%d bit key):\n", i + 1, serp_tv[i].keylen * 8);
key = serp_tv[i].key;
ret = crypto_cipher_setkey(tfm, key, serp_tv[i].keylen);
if (ret) {
printk("setkey() failed flags=%x\n", tfm->crt_flags);
if (!serp_tv[i].fail)
goto out;
}
p = serp_tv[i].plaintext;
sg[0].page = virt_to_page(p);
sg[0].offset = ((long) p & ~PAGE_MASK);
sg[0].length = sizeof(serp_tv[i].plaintext);
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, sizeof(serp_tv[i].result));
printk("%s\n", memcmp(q, serp_tv[i].result,
sizeof(serp_tv[i].result)) ? "fail" : "pass");
}
printk("\ntesting serpent decryption\n");
tsize = sizeof (serpent_dec_tv_template);
if (tsize > TVMEMSIZE) {
printk("template (%u) too big for tvmem (%u)\n", tsize,
TVMEMSIZE);
return;
}
memcpy(tvmem, serpent_dec_tv_template, tsize);
serp_tv = (void *) tvmem;
for (i = 0; i < SERPENT_DEC_TEST_VECTORS; i++) {
printk("test %u (%d bit key):\n", i + 1, serp_tv[i].keylen * 8);
key = serp_tv[i].key;
ret = crypto_cipher_setkey(tfm, key, serp_tv[i].keylen);
if (ret) {
printk("setkey() failed flags=%x\n", tfm->crt_flags);
if (!serp_tv[i].fail)
goto out;
}
p = serp_tv[i].plaintext;
sg[0].page = virt_to_page(p);
sg[0].offset = ((long) p & ~PAGE_MASK);
sg[0].length = sizeof(serp_tv[i].plaintext);
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, sizeof(serp_tv[i].result));
printk("%s\n", memcmp(q, serp_tv[i].result,
sizeof(serp_tv[i].result)) ? "fail" : "pass");
}
out:
crypto_free_tfm(tfm);
}
static void
test_available(void)
{
......@@ -1911,6 +2010,7 @@ do_test(void)
test_sha256();
test_blowfish();
test_twofish();
test_serpent();
#ifdef CONFIG_CRYPTO_HMAC
test_hmac_md5();
test_hmac_sha1();
......@@ -1950,6 +2050,10 @@ do_test(void)
test_twofish();
break;
case 9:
test_serpent();
break;
#ifdef CONFIG_CRYPTO_HMAC
case 100:
test_hmac_md5();
......
crypto/tcrypt.h
View file @ 58cc0c7f
......@@ -1384,4 +1384,100 @@ struct tf_tv tf_cbc_dec_tv_template[] = {
},
};
/*
* Serpent test vectors. These are backwards because Serpent writes
* octect sequences in right-to-left mode.
*/
#define SERPENT_ENC_TEST_VECTORS 4
#define SERPENT_DEC_TEST_VECTORS 4
struct serpent_tv {
unsigned int keylen, fail;
u8 key[32], plaintext[16], result[16];
};
struct serpent_tv serpent_enc_tv_template[] =
{
{
0, 0,
{ 0 },
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f },
{ 0x12, 0x07, 0xfc, 0xce, 0x9b, 0xd0, 0xd6, 0x47,
0x6a, 0xe9, 0x8f, 0xbe, 0xd1, 0x43, 0xa0, 0xe2 }
},
{
16, 0,
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f },
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f },
{ 0x4c, 0x7d, 0x8a, 0x32, 0x80, 0x72, 0xa2, 0x2c,
0x82, 0x3e, 0x4a, 0x1f, 0x3a, 0xcd, 0xa1, 0x6d }
},
{
32, 0,
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f },
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f },
{ 0xde, 0x26, 0x9f, 0xf8, 0x33, 0xe4, 0x32, 0xb8,
0x5b, 0x2e, 0x88, 0xd2, 0x70, 0x1c, 0xe7, 0x5c }
},
{
16, 0,
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80 },
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0xdd, 0xd2, 0x6b, 0x98, 0xa5, 0xff, 0xd8, 0x2c,
0x05, 0x34, 0x5a, 0x9d, 0xad, 0xbf, 0xaf, 0x49}
}
};
struct serpent_tv serpent_dec_tv_template[] =
{
{
0, 0,
{ 0 },
{ 0x12, 0x07, 0xfc, 0xce, 0x9b, 0xd0, 0xd6, 0x47,
0x6a, 0xe9, 0x8f, 0xbe, 0xd1, 0x43, 0xa0, 0xe2 },
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f },
},
{
16, 0,
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f },
{ 0x4c, 0x7d, 0x8a, 0x32, 0x80, 0x72, 0xa2, 0x2c,
0x82, 0x3e, 0x4a, 0x1f, 0x3a, 0xcd, 0xa1, 0x6d },
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f },
},
{
32, 0,
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f },
{ 0xde, 0x26, 0x9f, 0xf8, 0x33, 0xe4, 0x32, 0xb8,
0x5b, 0x2e, 0x88, 0xd2, 0x70, 0x1c, 0xe7, 0x5c },
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f },
},
{
16, 0,
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80 },
{ 0xdd, 0xd2, 0x6b, 0x98, 0xa5, 0xff, 0xd8, 0x2c,
0x05, 0x34, 0x5a, 0x9d, 0xad, 0xbf, 0xaf, 0x49},
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
}
};
#endif /* _CRYPTO_TCRYPT_H */
net/bridge/netfilter/Kconfig
View file @ 58cc0c7f
......@@ -70,7 +70,7 @@ config BRIDGE_EBT_ARPF
<file:Documentation/modules.txt>. If unsure, say `N'.
config BRIDGE_EBT_VLANF
tristate "ebt: 802.1Q VLAN filter support (EXPERIMENTAL)"
tristate "ebt: 802.1Q VLAN filter support"
depends on BRIDGE_NF_EBTABLES
help
This option adds the 802.1Q vlan match, which allows the filtering of
......
net/bridge/netfilter/ebt_vlan.c
View file @ 58cc0c7f
......@@ -25,17 +25,17 @@
#include <linux/netfilter_bridge/ebt_vlan.h>
static unsigned char debug;
#define MODULE_VERSION "0.4 (" __DATE__ " " __TIME__ ")"
#define MODULE_VERSION "0.6"
MODULE_PARM (debug, "0-1b");
MODULE_PARM_DESC (debug, "debug=1 is turn on debug messages");
MODULE_AUTHOR ("Nick Fedchik <nick@fedchik.org.ua>");
MODULE_DESCRIPTION ("802.1Q match module (ebtables extension), v"
MODULE_PARM(debug, "0-1b");
MODULE_PARM_DESC(debug, "debug=1 is turn on debug messages");
MODULE_AUTHOR("Nick Fedchik <nick@fedchik.org.ua>");
MODULE_DESCRIPTION("802.1Q match module (ebtables extension), v"
MODULE_VERSION);
MODULE_LICENSE ("GPL");
MODULE_LICENSE("GPL");
#define DEBUG_MSG(...) if (debug) printk (KERN_DEBUG __FILE__ ":" __VA_ARGS__)
#define DEBUG_MSG(...) if (debug) printk (KERN_DEBUG "ebt_vlan: " __VA_ARGS__)
#define INV_FLAG(_inv_flag_) (info->invflags & _inv_flag_) ? "!" : ""
#define GET_BITMASK(_BIT_MASK_) info->bitmask & _BIT_MASK_
#define SET_BITMASK(_BIT_MASK_) info->bitmask |= _BIT_MASK_
......@@ -59,11 +59,10 @@ MODULE_LICENSE ("GPL");
* 1 - miss (rule params not acceptable to the parsed frame)
*/
static int
ebt_filter_vlan (const struct sk_buff *skb,
ebt_filter_vlan(const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
const void *data,
unsigned int datalen)
const void *data, unsigned int datalen)
{
struct ebt_vlan_info *info = (struct ebt_vlan_info *) data; /* userspace data */
struct vlan_ethhdr *frame = (struct vlan_ethhdr *) skb->mac.raw; /* Passed tagged frame */
......@@ -75,62 +74,35 @@ ebt_filter_vlan (const struct sk_buff *skb,
/*
* Tag Control Information (TCI) consists of the following elements:
* - User_priority. This field allows the tagged frame to carry user_priority
* information across Bridged LANs in which individual LAN segments may be unable to signal
* priority information (e.g., 802.3/Ethernet segments).
* The user_priority field is three bits in length,
* interpreted as a binary number. The user_priority is therefore
* capable of representing eight priority levels, 0 through 7.
* The use and interpretation of this field is defined in ISO/IEC 15802-3.
* - Canonical Format Indicator (CFI). This field is used,
* in 802.3/Ethernet, to signal the presence or absence
* of a RIF field, and, in combination with the Non-canonical Format Indicator (NCFI) carried
* in the RIF, to signal the bit order of address information carried in the encapsulated
* frame. The Canonical Format Indicator (CFI) is a single bit flag value.
* - VLAN Identifier (VID). This field uniquely identifies the VLAN to
* which the frame belongs. The twelve-bit VLAN Identifier (VID) field
* uniquely identify the VLAN to which the frame belongs.
* The VID is encoded as an unsigned binary number.
* - User_priority. The user_priority field is three bits in length,
* interpreted as a binary number.
* - Canonical Format Indicator (CFI). The Canonical Format Indicator
* (CFI) is a single bit flag value. Currently ignored.
* - VLAN Identifier (VID). The VID is encoded as
* an unsigned binary number.
*/
TCI = ntohs (frame->h_vlan_TCI);
id = TCI & 0xFFF;
prio = TCI >> 13;
TCI = ntohs(frame->h_vlan_TCI);
id = TCI & VLAN_VID_MASK;
prio = (TCI >> 13) & 0x7;
encap = frame->h_vlan_encapsulated_proto;
/*
* First step is to check is null VLAN ID present
* in the parsed frame
*/
if (!(id)) {
/*
* Checking VLAN Identifier (VID)
*/
if (GET_BITMASK (EBT_VLAN_ID)) { /* Is VLAN ID parsed? */
EXIT_ON_MISMATCH (id, EBT_VLAN_ID);
DEBUG_MSG
("matched rule id=%s%d for frame id=%d\n",
INV_FLAG (EBT_VLAN_ID), info->id, id);
if (GET_BITMASK(EBT_VLAN_ID)) { /* Is VLAN ID parsed? */
EXIT_ON_MISMATCH(id, EBT_VLAN_ID);
}
} else {
/*
* Checking user_priority
*/
if (GET_BITMASK (EBT_VLAN_PRIO)) { /* Is VLAN user_priority parsed? */
EXIT_ON_MISMATCH (prio, EBT_VLAN_PRIO);
DEBUG_MSG
("matched rule prio=%s%d for frame prio=%d\n",
INV_FLAG (EBT_VLAN_PRIO), info->prio,
prio);
}
if (GET_BITMASK(EBT_VLAN_PRIO)) { /* Is VLAN user_priority parsed? */
EXIT_ON_MISMATCH(prio, EBT_VLAN_PRIO);
}
/*
* Checking Encapsulated Proto (Length/Type) field
*/
if (GET_BITMASK (EBT_VLAN_ENCAP)) { /* Is VLAN Encap parsed? */
EXIT_ON_MISMATCH (encap, EBT_VLAN_ENCAP);
DEBUG_MSG ("matched encap=%s%2.4X for frame encap=%2.4X\n",
INV_FLAG (EBT_VLAN_ENCAP),
ntohs (info->encap), ntohs (encap));
if (GET_BITMASK(EBT_VLAN_ENCAP)) { /* Is VLAN Encap parsed? */
EXIT_ON_MISMATCH(encap, EBT_VLAN_ENCAP);
}
/*
* All possible extension parameters was parsed.
......@@ -141,7 +113,7 @@ ebt_filter_vlan (const struct sk_buff *skb,
/*
* Function description: ebt_vlan_check() is called when userspace
* delivers the table to the kernel,
* delivers the table entry to the kernel,
* and to check that userspace doesn't give a bad table.
* Parameters:
* const char *tablename - table name string
......@@ -154,29 +126,29 @@ ebt_filter_vlan (const struct sk_buff *skb,
* 1 - miss (rule params is out of range, invalid, incompatible, etc.)
*/
static int
ebt_check_vlan (const char *tablename,
ebt_check_vlan(const char *tablename,
unsigned int hooknr,
const struct ebt_entry *e, void *data,
unsigned int datalen)
const struct ebt_entry *e, void *data, unsigned int datalen)
{
struct ebt_vlan_info *info = (struct ebt_vlan_info *) data;
/*
* Parameters buffer overflow check
*/
if (datalen != sizeof (struct ebt_vlan_info)) {
if (datalen != sizeof(struct ebt_vlan_info)) {
DEBUG_MSG
("params size %d is not eq to ebt_vlan_info (%d)\n",
datalen, sizeof (struct ebt_vlan_info));
("passed size %d is not eq to ebt_vlan_info (%d)\n",
datalen, sizeof(struct ebt_vlan_info));
return -EINVAL;
}
/*
* Is it 802.1Q frame checked?
*/
if (e->ethproto != __constant_htons (ETH_P_8021Q)) {
DEBUG_MSG ("passed entry proto %2.4X is not 802.1Q (8100)\n",
(unsigned short) ntohs (e->ethproto));
if (e->ethproto != __constant_htons(ETH_P_8021Q)) {
DEBUG_MSG
("passed entry proto %2.4X is not 802.1Q (8100)\n",
(unsigned short) ntohs(e->ethproto));
return -EINVAL;
}
......@@ -185,7 +157,7 @@ ebt_check_vlan (const char *tablename,
* True if even one bit is out of mask
*/
if (info->bitmask & ~EBT_VLAN_MASK) {
DEBUG_MSG ("bitmask %2X is out of mask (%2X)\n",
DEBUG_MSG("bitmask %2X is out of mask (%2X)\n",
info->bitmask, EBT_VLAN_MASK);
return -EINVAL;
}
......@@ -194,7 +166,7 @@ ebt_check_vlan (const char *tablename,
* Check for inversion flags range
*/
if (info->invflags & ~EBT_VLAN_MASK) {
DEBUG_MSG ("inversion flags %2X is out of mask (%2X)\n",
DEBUG_MSG("inversion flags %2X is out of mask (%2X)\n",
info->invflags, EBT_VLAN_MASK);
return -EINVAL;
}
......@@ -202,44 +174,33 @@ ebt_check_vlan (const char *tablename,
/*
* Reserved VLAN ID (VID) values
* -----------------------------
* 0 - The null VLAN ID. Indicates that the tag header contains only user_priority information;
* no VLAN identifier is present in the frame. This VID value shall not be
* configured as a PVID, configured in any Filtering Database entry, or used in any
* Management operation.
*
* 1 - The default Port VID (PVID) value used for classifying frames on ingress through a Bridge
* Port. The PVID value can be changed by management on a per-Port basis.
*
* 0x0FFF - Reserved for implementation use. This VID value shall not be configured as a
* PVID or transmitted in a tag header.
*
* The remaining values of VID are available for general use as VLAN identifiers.
* A Bridge may implement the ability to support less than the full range of VID values;
* i.e., for a given implementation,
* an upper limit, N, is defined for the VID values supported, where N is less than or equal to 4094.
* All implementations shall support the use of all VID values in the range 0 through their defined maximum
* VID, N.
*
* For Linux, N = 4094.
* 0 - The null VLAN ID.
* 1 - The default Port VID (PVID)
* 0x0FFF - Reserved for implementation use.
* if_vlan.h: VLAN_GROUP_ARRAY_LEN 4096.
*/
if (GET_BITMASK (EBT_VLAN_ID)) { /* when vlan-id param was spec-ed */
if (GET_BITMASK(EBT_VLAN_ID)) { /* when vlan-id param was spec-ed */
if (!!info->id) { /* if id!=0 => check vid range */
if (info->id > 4094) { /* check if id > than (0x0FFE) */
if (info->id > VLAN_GROUP_ARRAY_LEN) {
DEBUG_MSG
("vlan id %d is out of range (1-4094)\n",
("id %d is out of range (1-4096)\n",
info->id);
return -EINVAL;
}
/*
* Note: This is valid VLAN-tagged frame point.
* Any value of user_priority are acceptable, but could be ignored
* according to 802.1Q Std.
* Any value of user_priority are acceptable,
* but should be ignored according to 802.1Q Std.
* So we just drop the prio flag.
*/
} else {
info->bitmask &= ~EBT_VLAN_PRIO;
}
/*
* if id=0 (null VLAN ID) => Check for user_priority range
* Else, id=0 (null VLAN ID) => user_priority range (any?)
*/
if (GET_BITMASK (EBT_VLAN_PRIO)) {
}
if (GET_BITMASK(EBT_VLAN_PRIO)) {
if ((unsigned char) info->prio > 7) {
DEBUG_MSG
("prio %d is out of range (0-7)\n",
......@@ -248,37 +209,19 @@ ebt_check_vlan (const char *tablename,
}
}
/*
* Note2: This is valid priority-tagged frame point
* with null VID field.
*/
}
} else { /* VLAN Id not set */
if (GET_BITMASK (EBT_VLAN_PRIO)) { /* But user_priority is set - abnormal! */
info->id = 0; /* Set null VID (case for Priority-tagged frames) */
SET_BITMASK (EBT_VLAN_ID); /* and set id flag */
}
}
/*
* Check for encapsulated proto range - it is possible to be any value for u_short range.
* When relaying a tagged frame between 802.3/Ethernet MACs,
* a Bridge may adjust the padding field such that
* the minimum size of a transmitted tagged frame is 68 octets (7.2).
* Check for encapsulated proto range - it is possible to be
* any value for u_short range.
* if_ether.h: ETH_ZLEN 60 - Min. octets in frame sans FCS
*/
if (GET_BITMASK (EBT_VLAN_ENCAP)) {
if ((unsigned short) ntohs (info->encap) < ETH_ZLEN) {
if (GET_BITMASK(EBT_VLAN_ENCAP)) {
if ((unsigned short) ntohs(info->encap) < ETH_ZLEN) {
DEBUG_MSG
("encap packet length %d is less than minimal %d\n",
ntohs (info->encap), ETH_ZLEN);
("encap frame length %d is less than minimal\n",
ntohs(info->encap));
return -EINVAL;
}
}
/*
* Otherwise is all correct
*/
DEBUG_MSG ("802.1Q tagged frame checked (%s table, %d hook)\n",
tablename, hooknr);
return 0;
}
......@@ -293,24 +236,22 @@ static struct ebt_match filter_vlan = {
/*
* Module initialization function.
* Called when module is loaded to kernelspace
*/
static int __init init (void)
static int __init init(void)
{
DEBUG_MSG ("ebtables 802.1Q extension module v"
DEBUG_MSG("ebtables 802.1Q extension module v"
MODULE_VERSION "\n");
DEBUG_MSG ("module debug=%d\n", !!debug);
return ebt_register_match (&filter_vlan);
DEBUG_MSG("module debug=%d\n", !!debug);
return ebt_register_match(&filter_vlan);
}
/*
* Module "finalization" function
* Called when download module from kernelspace
*/
static void __exit fini (void)
static void __exit fini(void)
{
ebt_unregister_match (&filter_vlan);
ebt_unregister_match(&filter_vlan);
}
module_init (init);
module_exit (fini);
module_init(init);
module_exit(fini);
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7