# CONFIG_CRYPTO_AEAD is not set
# CONFIG_CRYPTO_AES_586 is not set
CONFIG_CRYPTO_AES=m
-CONFIG_CRYPTO_ALGAPI2=m
+CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_ALGAPI=m
# CONFIG_CRYPTO_ANSI_CPRNG is not set
# CONFIG_CRYPTO_ANUBIS is not set
# CONFIG_CRYPTO_MICHAEL_MIC is not set
# CONFIG_CRYPTO_NULL is not set
# CONFIG_CRYPTO_PCBC is not set
-CONFIG_CRYPTO_PCOMP=m
+CONFIG_CRYPTO_PCOMP=y
# CONFIG_CRYPTO_PRNG is not set
# CONFIG_CRYPTO_RMD128 is not set
# CONFIG_CRYPTO_RMD160 is not set
# CONFIG_CRYPTO_TWOFISH_586 is not set
# CONFIG_CRYPTO_TWOFISH_COMMON is not set
# CONFIG_CRYPTO_TWOFISH is not set
+CONFIG_CRYPTO_UNLZMA=y
CONFIG_CRYPTO_WORKQUEUE=m
# CONFIG_CRYPTO_WP512 is not set
# CONFIG_CRYPTO_XCBC is not set
# CONFIG_CRYPTO_XTS is not set
CONFIG_CRYPTO=y
-# CONFIG_CRYPTO_ZLIB is not set
+CONFIG_CRYPTO_ZLIB=y
# CONFIG_DAB is not set
# CONFIG_DAVICOM_PHY is not set
# CONFIG_DCB is not set
# CONFIG_NFTL is not set
# CONFIG_NILFS2_FS is not set
CONFIG_NL80211=y
+CONFIG_NLATTR=y
# CONFIG_NLS_ASCII is not set
# CONFIG_NLS_CODEPAGE_1250 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
CONFIG_SPLIT_PTLOCK_CPUS=4
# CONFIG_SQUASHFS_EMBEDDED is not set
CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE=3
+CONFIG_SQUASHFS_SUPPORT_LZMA=y
+CONFIG_SQUASHFS_SUPPORT_ZLIB=y
# CONFIG_SQUASHFS_VMALLOC is not set
CONFIG_SQUASHFS=y
# CONFIG_SSB_BLOCKIO is not set
--- /dev/null
+--- a/crypto/testmgr.c
++++ b/crypto/testmgr.c
+@@ -914,24 +914,25 @@ static int test_pcomp(struct crypto_pcom
+ const char *algo = crypto_tfm_alg_driver_name(crypto_pcomp_tfm(tfm));
+ unsigned int i;
+ char result[COMP_BUF_SIZE];
+- int error;
++ int res;
+
+ for (i = 0; i < ctcount; i++) {
+ struct comp_request req;
++ unsigned int produced = 0;
+
+- error = crypto_compress_setup(tfm, ctemplate[i].params,
+- ctemplate[i].paramsize);
+- if (error) {
++ res = crypto_compress_setup(tfm, ctemplate[i].params,
++ ctemplate[i].paramsize);
++ if (res) {
+ pr_err("alg: pcomp: compression setup failed on test "
+- "%d for %s: error=%d\n", i + 1, algo, error);
+- return error;
++ "%d for %s: error=%d\n", i + 1, algo, res);
++ return res;
+ }
+
+- error = crypto_compress_init(tfm);
+- if (error) {
++ res = crypto_compress_init(tfm);
++ if (res) {
+ pr_err("alg: pcomp: compression init failed on test "
+- "%d for %s: error=%d\n", i + 1, algo, error);
+- return error;
++ "%d for %s: error=%d\n", i + 1, algo, res);
++ return res;
+ }
+
+ memset(result, 0, sizeof(result));
+@@ -941,32 +942,37 @@ static int test_pcomp(struct crypto_pcom
+ req.next_out = result;
+ req.avail_out = ctemplate[i].outlen / 2;
+
+- error = crypto_compress_update(tfm, &req);
+- if (error && (error != -EAGAIN || req.avail_in)) {
++ res = crypto_compress_update(tfm, &req);
++ if (res < 0 && (res != -EAGAIN || req.avail_in)) {
+ pr_err("alg: pcomp: compression update failed on test "
+- "%d for %s: error=%d\n", i + 1, algo, error);
+- return error;
++ "%d for %s: error=%d\n", i + 1, algo, res);
++ return res;
+ }
++ if (res > 0)
++ produced += res;
+
+ /* Add remaining input data */
+ req.avail_in += (ctemplate[i].inlen + 1) / 2;
+
+- error = crypto_compress_update(tfm, &req);
+- if (error && (error != -EAGAIN || req.avail_in)) {
++ res = crypto_compress_update(tfm, &req);
++ if (res < 0 && (res != -EAGAIN || req.avail_in)) {
+ pr_err("alg: pcomp: compression update failed on test "
+- "%d for %s: error=%d\n", i + 1, algo, error);
+- return error;
++ "%d for %s: error=%d\n", i + 1, algo, res);
++ return res;
+ }
++ if (res > 0)
++ produced += res;
+
+ /* Provide remaining output space */
+ req.avail_out += COMP_BUF_SIZE - ctemplate[i].outlen / 2;
+
+- error = crypto_compress_final(tfm, &req);
+- if (error) {
++ res = crypto_compress_final(tfm, &req);
++ if (res < 0) {
+ pr_err("alg: pcomp: compression final failed on test "
+- "%d for %s: error=%d\n", i + 1, algo, error);
+- return error;
++ "%d for %s: error=%d\n", i + 1, algo, res);
++ return res;
+ }
++ produced += res;
+
+ if (COMP_BUF_SIZE - req.avail_out != ctemplate[i].outlen) {
+ pr_err("alg: comp: Compression test %d failed for %s: "
+@@ -976,6 +982,13 @@ static int test_pcomp(struct crypto_pcom
+ return -EINVAL;
+ }
+
++ if (produced != ctemplate[i].outlen) {
++ pr_err("alg: comp: Compression test %d failed for %s: "
++ "returned len = %u (expected %d)\n", i + 1,
++ algo, produced, ctemplate[i].outlen);
++ return -EINVAL;
++ }
++
+ if (memcmp(result, ctemplate[i].output, ctemplate[i].outlen)) {
+ pr_err("alg: pcomp: Compression test %d failed for "
+ "%s\n", i + 1, algo);
+@@ -986,21 +999,21 @@ static int test_pcomp(struct crypto_pcom
+
+ for (i = 0; i < dtcount; i++) {
+ struct comp_request req;
++ unsigned int produced = 0;
+
+- error = crypto_decompress_setup(tfm, dtemplate[i].params,
+- dtemplate[i].paramsize);
+- if (error) {
++ res = crypto_decompress_setup(tfm, dtemplate[i].params,
++ dtemplate[i].paramsize);
++ if (res) {
+ pr_err("alg: pcomp: decompression setup failed on "
+- "test %d for %s: error=%d\n", i + 1, algo,
+- error);
+- return error;
++ "test %d for %s: error=%d\n", i + 1, algo, res);
++ return res;
+ }
+
+- error = crypto_decompress_init(tfm);
+- if (error) {
++ res = crypto_decompress_init(tfm);
++ if (res) {
+ pr_err("alg: pcomp: decompression init failed on test "
+- "%d for %s: error=%d\n", i + 1, algo, error);
+- return error;
++ "%d for %s: error=%d\n", i + 1, algo, res);
++ return res;
+ }
+
+ memset(result, 0, sizeof(result));
+@@ -1010,35 +1023,38 @@ static int test_pcomp(struct crypto_pcom
+ req.next_out = result;
+ req.avail_out = dtemplate[i].outlen / 2;
+
+- error = crypto_decompress_update(tfm, &req);
+- if (error && (error != -EAGAIN || req.avail_in)) {
++ res = crypto_decompress_update(tfm, &req);
++ if (res < 0 && (res != -EAGAIN || req.avail_in)) {
+ pr_err("alg: pcomp: decompression update failed on "
+- "test %d for %s: error=%d\n", i + 1, algo,
+- error);
+- return error;
++ "test %d for %s: error=%d\n", i + 1, algo, res);
++ return res;
+ }
++ if (res > 0)
++ produced += res;
+
+ /* Add remaining input data */
+ req.avail_in += (dtemplate[i].inlen + 1) / 2;
+
+- error = crypto_decompress_update(tfm, &req);
+- if (error && (error != -EAGAIN || req.avail_in)) {
++ res = crypto_decompress_update(tfm, &req);
++ if (res < 0 && (res != -EAGAIN || req.avail_in)) {
+ pr_err("alg: pcomp: decompression update failed on "
+- "test %d for %s: error=%d\n", i + 1, algo,
+- error);
+- return error;
++ "test %d for %s: error=%d\n", i + 1, algo, res);
++ return res;
+ }
++ if (res > 0)
++ produced += res;
+
+ /* Provide remaining output space */
+ req.avail_out += COMP_BUF_SIZE - dtemplate[i].outlen / 2;
+
+- error = crypto_decompress_final(tfm, &req);
+- if (error && (error != -EAGAIN || req.avail_in)) {
++ res = crypto_decompress_final(tfm, &req);
++ if (res < 0 && (res != -EAGAIN || req.avail_in)) {
+ pr_err("alg: pcomp: decompression final failed on "
+- "test %d for %s: error=%d\n", i + 1, algo,
+- error);
+- return error;
++ "test %d for %s: error=%d\n", i + 1, algo, res);
++ return res;
+ }
++ if (res > 0)
++ produced += res;
+
+ if (COMP_BUF_SIZE - req.avail_out != dtemplate[i].outlen) {
+ pr_err("alg: comp: Decompression test %d failed for "
+@@ -1048,6 +1064,13 @@ static int test_pcomp(struct crypto_pcom
+ return -EINVAL;
+ }
+
++ if (produced != dtemplate[i].outlen) {
++ pr_err("alg: comp: Decompression test %d failed for "
++ "%s: returned len = %u (expected %d)\n", i + 1,
++ algo, produced, dtemplate[i].outlen);
++ return -EINVAL;
++ }
++
+ if (memcmp(result, dtemplate[i].output, dtemplate[i].outlen)) {
+ pr_err("alg: pcomp: Decompression test %d failed for "
+ "%s\n", i + 1, algo);
+--- a/crypto/zlib.c
++++ b/crypto/zlib.c
+@@ -165,15 +165,15 @@ static int zlib_compress_update(struct c
+ return -EINVAL;
+ }
+
++ ret = req->avail_out - stream->avail_out;
+ pr_debug("avail_in %u, avail_out %u (consumed %u, produced %u)\n",
+ stream->avail_in, stream->avail_out,
+- req->avail_in - stream->avail_in,
+- req->avail_out - stream->avail_out);
++ req->avail_in - stream->avail_in, ret);
+ req->next_in = stream->next_in;
+ req->avail_in = stream->avail_in;
+ req->next_out = stream->next_out;
+ req->avail_out = stream->avail_out;
+- return 0;
++ return ret;
+ }
+
+ static int zlib_compress_final(struct crypto_pcomp *tfm,
+@@ -195,15 +195,15 @@ static int zlib_compress_final(struct cr
+ return -EINVAL;
+ }
+
++ ret = req->avail_out - stream->avail_out;
+ pr_debug("avail_in %u, avail_out %u (consumed %u, produced %u)\n",
+ stream->avail_in, stream->avail_out,
+- req->avail_in - stream->avail_in,
+- req->avail_out - stream->avail_out);
++ req->avail_in - stream->avail_in, ret);
+ req->next_in = stream->next_in;
+ req->avail_in = stream->avail_in;
+ req->next_out = stream->next_out;
+ req->avail_out = stream->avail_out;
+- return 0;
++ return ret;
+ }
+
+
+@@ -280,15 +280,15 @@ static int zlib_decompress_update(struct
+ return -EINVAL;
+ }
+
++ ret = req->avail_out - stream->avail_out;
+ pr_debug("avail_in %u, avail_out %u (consumed %u, produced %u)\n",
+ stream->avail_in, stream->avail_out,
+- req->avail_in - stream->avail_in,
+- req->avail_out - stream->avail_out);
++ req->avail_in - stream->avail_in, ret);
+ req->next_in = stream->next_in;
+ req->avail_in = stream->avail_in;
+ req->next_out = stream->next_out;
+ req->avail_out = stream->avail_out;
+- return 0;
++ return ret;
+ }
+
+ static int zlib_decompress_final(struct crypto_pcomp *tfm,
+@@ -328,15 +328,15 @@ static int zlib_decompress_final(struct
+ return -EINVAL;
+ }
+
++ ret = req->avail_out - stream->avail_out;
+ pr_debug("avail_in %u, avail_out %u (consumed %u, produced %u)\n",
+ stream->avail_in, stream->avail_out,
+- req->avail_in - stream->avail_in,
+- req->avail_out - stream->avail_out);
++ req->avail_in - stream->avail_in, ret);
+ req->next_in = stream->next_in;
+ req->avail_in = stream->avail_in;
+ req->next_out = stream->next_out;
+ req->avail_out = stream->avail_out;
+- return 0;
++ return ret;
+ }
+
+
--- /dev/null
+--- a/fs/squashfs/Kconfig
++++ b/fs/squashfs/Kconfig
+@@ -1,7 +1,8 @@
+ config SQUASHFS
+ tristate "SquashFS 4.0 - Squashed file system support"
+ depends on BLOCK
+- select ZLIB_INFLATE
++ select CRYPTO
++ select CRYPTO_ZLIB
+ help
+ Saying Y here includes support for SquashFS 4.0 (a Compressed
+ Read-Only File System). Squashfs is a highly compressed read-only
+--- a/fs/squashfs/block.c
++++ b/fs/squashfs/block.c
+@@ -32,7 +32,8 @@
+ #include <linux/mutex.h>
+ #include <linux/string.h>
+ #include <linux/buffer_head.h>
+-#include <linux/zlib.h>
++
++#include <crypto/compress.h>
+
+ #include "squashfs_fs.h"
+ #include "squashfs_fs_sb.h"
+@@ -153,7 +154,8 @@ int squashfs_read_data(struct super_bloc
+ }
+
+ if (compressed) {
+- int zlib_err = 0, zlib_init = 0;
++ int res = 0, decomp_init = 0;
++ struct comp_request req;
+
+ /*
+ * Uncompress block.
+@@ -161,12 +163,13 @@ int squashfs_read_data(struct super_bloc
+
+ mutex_lock(&msblk->read_data_mutex);
+
+- msblk->stream.avail_out = 0;
+- msblk->stream.avail_in = 0;
++ req.avail_out = 0;
++ req.avail_in = 0;
+
+ bytes = length;
++ length = 0;
+ do {
+- if (msblk->stream.avail_in == 0 && k < b) {
++ if (req.avail_in == 0 && k < b) {
+ avail = min(bytes, msblk->devblksize - offset);
+ bytes -= avail;
+ wait_on_buffer(bh[k]);
+@@ -179,45 +182,47 @@ int squashfs_read_data(struct super_bloc
+ continue;
+ }
+
+- msblk->stream.next_in = bh[k]->b_data + offset;
+- msblk->stream.avail_in = avail;
++ req.next_in = bh[k]->b_data + offset;
++ req.avail_in = avail;
+ offset = 0;
+ }
+
+- if (msblk->stream.avail_out == 0 && page < pages) {
+- msblk->stream.next_out = buffer[page++];
+- msblk->stream.avail_out = PAGE_CACHE_SIZE;
++ if (req.avail_out == 0 && page < pages) {
++ req.next_out = buffer[page++];
++ req.avail_out = PAGE_CACHE_SIZE;
+ }
+
+- if (!zlib_init) {
+- zlib_err = zlib_inflateInit(&msblk->stream);
+- if (zlib_err != Z_OK) {
+- ERROR("zlib_inflateInit returned"
+- " unexpected result 0x%x,"
+- " srclength %d\n", zlib_err,
+- srclength);
++ if (!decomp_init) {
++ res = crypto_decompress_init(msblk->tfm);
++ if (res) {
++ ERROR("crypto_decompress_init "
++ "returned %d, srclength %d\n",
++ res, srclength);
+ goto release_mutex;
+ }
+- zlib_init = 1;
++ decomp_init = 1;
+ }
+
+- zlib_err = zlib_inflate(&msblk->stream, Z_SYNC_FLUSH);
++ res = crypto_decompress_update(msblk->tfm, &req);
++ if (res < 0) {
++ ERROR("crypto_decompress_update returned %d, "
++ "data probably corrupt\n", res);
++ goto release_mutex;
++ }
++ length += res;
+
+- if (msblk->stream.avail_in == 0 && k < b)
++ if (req.avail_in == 0 && k < b)
+ put_bh(bh[k++]);
+- } while (zlib_err == Z_OK);
++ } while (bytes || res);
+
+- if (zlib_err != Z_STREAM_END) {
+- ERROR("zlib_inflate error, data probably corrupt\n");
++ res = crypto_decompress_final(msblk->tfm, &req);
++ if (res < 0) {
++ ERROR("crypto_decompress_final returned %d, data "
++ "probably corrupt\n", res);
+ goto release_mutex;
+ }
++ length += res;
+
+- zlib_err = zlib_inflateEnd(&msblk->stream);
+- if (zlib_err != Z_OK) {
+- ERROR("zlib_inflate error, data probably corrupt\n");
+- goto release_mutex;
+- }
+- length = msblk->stream.total_out;
+ mutex_unlock(&msblk->read_data_mutex);
+ } else {
+ /*
+--- a/fs/squashfs/squashfs_fs_sb.h
++++ b/fs/squashfs/squashfs_fs_sb.h
+@@ -64,7 +64,7 @@ struct squashfs_sb_info {
+ struct mutex read_data_mutex;
+ struct mutex meta_index_mutex;
+ struct meta_index *meta_index;
+- z_stream stream;
++ struct crypto_pcomp *tfm;
+ __le64 *inode_lookup_table;
+ u64 inode_table;
+ u64 directory_table;
+--- a/fs/squashfs/super.c
++++ b/fs/squashfs/super.c
+@@ -37,11 +37,19 @@
+ #include <linux/zlib.h>
+ #include <linux/magic.h>
+
++#include <crypto/compress.h>
++
++#include <net/netlink.h>
++
+ #include "squashfs_fs.h"
+ #include "squashfs_fs_sb.h"
+ #include "squashfs_fs_i.h"
+ #include "squashfs.h"
+
++
++#define SQUASHFS_CRYPTO_ALG "zlib"
++
++
+ static struct file_system_type squashfs_fs_type;
+ static struct super_operations squashfs_super_ops;
+
+@@ -75,6 +83,16 @@ static int squashfs_fill_super(struct su
+ unsigned short flags;
+ unsigned int fragments;
+ u64 lookup_table_start;
++ struct {
++ struct nlattr nla;
++ int val;
++ } params = {
++ .nla = {
++ .nla_len = nla_attr_size(sizeof(int)),
++ .nla_type = ZLIB_DECOMP_WINDOWBITS,
++ },
++ .val = DEF_WBITS,
++ };
+ int err;
+
+ TRACE("Entered squashfs_fill_superblock\n");
+@@ -86,16 +104,25 @@ static int squashfs_fill_super(struct su
+ }
+ msblk = sb->s_fs_info;
+
+- msblk->stream.workspace = kmalloc(zlib_inflate_workspacesize(),
+- GFP_KERNEL);
+- if (msblk->stream.workspace == NULL) {
+- ERROR("Failed to allocate zlib workspace\n");
++ msblk->tfm = crypto_alloc_pcomp(SQUASHFS_CRYPTO_ALG, 0,
++ CRYPTO_ALG_ASYNC);
++ if (IS_ERR(msblk->tfm)) {
++ ERROR("Failed to load %s crypto module\n",
++ SQUASHFS_CRYPTO_ALG);
++ err = PTR_ERR(msblk->tfm);
++ goto failed_pcomp;
++ }
++
++ err = crypto_decompress_setup(msblk->tfm, ¶ms, sizeof(params));
++ if (err) {
++ ERROR("Failed to set up decompression parameters\n");
+ goto failure;
+ }
+
+ sblk = kzalloc(sizeof(*sblk), GFP_KERNEL);
+ if (sblk == NULL) {
+ ERROR("Failed to allocate squashfs_super_block\n");
++ err = -ENOMEM;
+ goto failure;
+ }
+
+@@ -284,17 +311,18 @@ failed_mount:
+ kfree(msblk->inode_lookup_table);
+ kfree(msblk->fragment_index);
+ kfree(msblk->id_table);
+- kfree(msblk->stream.workspace);
++ crypto_free_pcomp(msblk->tfm);
+ kfree(sb->s_fs_info);
+ sb->s_fs_info = NULL;
+ kfree(sblk);
+ return err;
+
+ failure:
+- kfree(msblk->stream.workspace);
++ crypto_free_pcomp(msblk->tfm);
++failed_pcomp:
+ kfree(sb->s_fs_info);
+ sb->s_fs_info = NULL;
+- return -ENOMEM;
++ return err;
+ }
+
+
+@@ -333,7 +361,7 @@ static void squashfs_put_super(struct su
+ kfree(sbi->id_table);
+ kfree(sbi->fragment_index);
+ kfree(sbi->meta_index);
+- kfree(sbi->stream.workspace);
++ crypto_free_pcomp(sbi->tfm);
+ kfree(sb->s_fs_info);
+ sb->s_fs_info = NULL;
+ }
--- /dev/null
+--- /dev/null
++++ b/crypto/unlzma.c
+@@ -0,0 +1,710 @@
++/*
++ * LZMA uncompresion module for pcomp
++ * Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
++ *
++ * Based on:
++ * Initial Linux kernel adaptation
++ * Copyright (C) 2006 Alain < alain@knaff.lu >
++ *
++ * Based on small lzma deflate implementation/Small range coder
++ * implementation for lzma.
++ * Copyright (C) 2006 Aurelien Jacobs < aurel@gnuage.org >
++ *
++ * Based on LzmaDecode.c from the LZMA SDK 4.22 (http://www.7-zip.org/)
++ * Copyright (C) 1999-2005 Igor Pavlov
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published
++ * by the Free Software Foundation.
++ *
++ * FIXME: the current implementation assumes that the caller will
++ * not free any output buffers until the whole decompression has been
++ * completed. This is necessary, because LZMA looks back at old output
++ * instead of doing a separate dictionary allocation, which saves RAM.
++ */
++
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/vmalloc.h>
++#include <linux/interrupt.h>
++#include <linux/mm.h>
++#include <linux/net.h>
++#include <linux/slab.h>
++#include <linux/kthread.h>
++
++#include <crypto/internal/compress.h>
++#include "unlzma.h"
++
++static int instance = 0;
++
++struct unlzma_buffer {
++ struct unlzma_buffer *last;
++ int offset;
++ int size;
++ u8 *ptr;
++};
++
++struct unlzma_ctx {
++ struct task_struct *thread;
++ wait_queue_head_t next_req;
++ struct mutex mutex;
++ bool active;
++ bool cancel;
++
++ const u8 *next_in;
++ int avail_in;
++
++ u8 *next_out;
++ int avail_out;
++
++ /* reader state */
++ u32 code;
++ u32 range;
++ u32 bound;
++
++ /* writer state */
++ u8 previous_byte;
++ ssize_t pos;
++ struct unlzma_buffer *head;
++
++ /* cstate */
++ int state;
++ u32 rep0, rep1, rep2, rep3;
++
++ u32 dict_size;
++
++ void *workspace;
++ int workspace_size;
++};
++
++static inline bool
++unlzma_should_stop(struct unlzma_ctx *ctx)
++{
++ return unlikely(kthread_should_stop() || ctx->cancel);
++}
++
++static void
++unlzma_request_buffer(struct unlzma_ctx *ctx, int *avail)
++{
++ mutex_unlock(&ctx->mutex);
++ wait_event(ctx->next_req, unlzma_should_stop(ctx) || (*avail > 0));
++ mutex_lock(&ctx->mutex);
++}
++
++static u8
++rc_read(struct unlzma_ctx *ctx)
++{
++ if (unlikely(ctx->avail_in <= 0))
++ unlzma_request_buffer(ctx, &ctx->avail_in);
++
++ if (unlzma_should_stop(ctx))
++ return 0;
++
++ ctx->avail_in--;
++ return *(ctx->next_in++);
++}
++
++
++static inline void
++rc_get_code(struct unlzma_ctx *ctx)
++{
++ ctx->code = (ctx->code << 8) | rc_read(ctx);
++}
++
++static void
++rc_normalize(struct unlzma_ctx *ctx)
++{
++ if (ctx->range < (1 << RC_TOP_BITS)) {
++ ctx->range <<= 8;
++ rc_get_code(ctx);
++ }
++}
++
++static int
++rc_is_bit_0(struct unlzma_ctx *ctx, u16 *p)
++{
++ rc_normalize(ctx);
++ ctx->bound = *p * (ctx->range >> RC_MODEL_TOTAL_BITS);
++ return ctx->code < ctx->bound;
++}
++
++static void
++rc_update_bit_0(struct unlzma_ctx *ctx, u16 *p)
++{
++ ctx->range = ctx->bound;
++ *p += ((1 << RC_MODEL_TOTAL_BITS) - *p) >> RC_MOVE_BITS;
++}
++
++static void
++rc_update_bit_1(struct unlzma_ctx *ctx, u16 *p)
++{
++ ctx->range -= ctx->bound;
++ ctx->code -= ctx->bound;
++ *p -= *p >> RC_MOVE_BITS;
++}
++
++static bool
++rc_get_bit(struct unlzma_ctx *ctx, u16 *p, int *symbol)
++{
++ if (rc_is_bit_0(ctx, p)) {
++ rc_update_bit_0(ctx, p);
++ *symbol *= 2;
++ return 0;
++ } else {
++ rc_update_bit_1(ctx, p);
++ *symbol = *symbol * 2 + 1;
++ return 1;
++ }
++}
++
++static int
++rc_direct_bit(struct unlzma_ctx *ctx)
++{
++ rc_normalize(ctx);
++ ctx->range >>= 1;
++ if (ctx->code >= ctx->range) {
++ ctx->code -= ctx->range;
++ return 1;
++ }
++ return 0;
++}
++
++static void
++rc_bit_tree_decode(struct unlzma_ctx *ctx, u16 *p, int num_levels, int *symbol)
++{
++ int i = num_levels;
++
++ *symbol = 1;
++ while (i--)
++ rc_get_bit(ctx, p + *symbol, symbol);
++ *symbol -= 1 << num_levels;
++}
++
++static u8
++peek_old_byte(struct unlzma_ctx *ctx, u32 offs)
++{
++ struct unlzma_buffer *bh = ctx->head;
++ u32 pos;
++
++ pos = ctx->pos - offs;
++ if (pos >= ctx->dict_size) {
++ pos = (~pos % ctx->dict_size);
++ }
++
++ while (bh->offset > pos) {
++ bh = bh->last;
++ if (!bh)
++ return 0;
++ }
++
++ pos -= bh->offset;
++ if (pos > bh->size)
++ return 0;
++
++ return bh->ptr[pos];
++}
++
++static void
++get_buffer(struct unlzma_ctx *ctx)
++{
++ struct unlzma_buffer *bh;
++
++ bh = kzalloc(sizeof(struct unlzma_buffer), GFP_KERNEL);
++ bh->ptr = ctx->next_out;
++ bh->offset = ctx->pos;
++ bh->last = ctx->head;
++ bh->size = ctx->avail_out;
++ ctx->head = bh;
++}
++
++static void
++write_byte(struct unlzma_ctx *ctx, u8 byte)
++{
++ if (unlikely(ctx->avail_out <= 0)) {
++ unlzma_request_buffer(ctx, &ctx->avail_out);
++ get_buffer(ctx);
++ }
++
++ if (!ctx->avail_out)
++ return;
++
++ ctx->previous_byte = byte;
++ *(ctx->next_out++) = byte;
++ ctx->avail_out--;
++ ctx->pos++;
++}
++
++
++static inline void
++copy_byte(struct unlzma_ctx *ctx, u32 offs)
++{
++ write_byte(ctx, peek_old_byte(ctx, offs));
++}
++
++static void
++copy_bytes(struct unlzma_ctx *ctx, u32 rep0, int len)
++{
++ do {
++ copy_byte(ctx, rep0);
++ len--;
++ if (unlzma_should_stop(ctx))
++ break;
++ } while (len != 0);
++}
++
++static void
++process_bit0(struct unlzma_ctx *ctx, u16 *p, int pos_state, u16 *prob,
++ int lc, u32 literal_pos_mask)
++{
++ int mi = 1;
++ rc_update_bit_0(ctx, prob);
++ prob = (p + LZMA_LITERAL +
++ (LZMA_LIT_SIZE
++ * (((ctx->pos & literal_pos_mask) << lc)
++ + (ctx->previous_byte >> (8 - lc))))
++ );
++
++ if (ctx->state >= LZMA_NUM_LIT_STATES) {
++ int match_byte = peek_old_byte(ctx, ctx->rep0);
++ do {
++ u16 bit;
++ u16 *prob_lit;
++
++ match_byte <<= 1;
++ bit = match_byte & 0x100;
++ prob_lit = prob + 0x100 + bit + mi;
++ if (rc_get_bit(ctx, prob_lit, &mi) != !!bit)
++ break;
++ } while (mi < 0x100);
++ }
++ while (mi < 0x100) {
++ u16 *prob_lit = prob + mi;
++ rc_get_bit(ctx, prob_lit, &mi);
++ }
++ write_byte(ctx, mi);
++ if (ctx->state < 4)
++ ctx->state = 0;
++ else if (ctx->state < 10)
++ ctx->state -= 3;
++ else
++ ctx->state -= 6;
++}
++
++static void
++process_bit1(struct unlzma_ctx *ctx, u16 *p, int pos_state, u16 *prob)
++{
++ int offset;
++ u16 *prob_len;
++ int num_bits;
++ int len;
++
++ rc_update_bit_1(ctx, prob);
++ prob = p + LZMA_IS_REP + ctx->state;
++ if (rc_is_bit_0(ctx, prob)) {
++ rc_update_bit_0(ctx, prob);
++ ctx->rep3 = ctx->rep2;
++ ctx->rep2 = ctx->rep1;
++ ctx->rep1 = ctx->rep0;
++ ctx->state = ctx->state < LZMA_NUM_LIT_STATES ? 0 : 3;
++ prob = p + LZMA_LEN_CODER;
++ } else {
++ rc_update_bit_1(ctx, prob);
++ prob = p + LZMA_IS_REP_G0 + ctx->state;
++ if (rc_is_bit_0(ctx, prob)) {
++ rc_update_bit_0(ctx, prob);
++ prob = (p + LZMA_IS_REP_0_LONG
++ + (ctx->state <<
++ LZMA_NUM_POS_BITS_MAX) +
++ pos_state);
++ if (rc_is_bit_0(ctx, prob)) {
++ rc_update_bit_0(ctx, prob);
++
++ ctx->state = ctx->state < LZMA_NUM_LIT_STATES ?
++ 9 : 11;
++ copy_byte(ctx, ctx->rep0);
++ return;
++ } else {
++ rc_update_bit_1(ctx, prob);
++ }
++ } else {
++ u32 distance;
++
++ rc_update_bit_1(ctx, prob);
++ prob = p + LZMA_IS_REP_G1 + ctx->state;
++ if (rc_is_bit_0(ctx, prob)) {
++ rc_update_bit_0(ctx, prob);
++ distance = ctx->rep1;
++ } else {
++ rc_update_bit_1(ctx, prob);
++ prob = p + LZMA_IS_REP_G2 + ctx->state;
++ if (rc_is_bit_0(ctx, prob)) {
++ rc_update_bit_0(ctx, prob);
++ distance = ctx->rep2;
++ } else {
++ rc_update_bit_1(ctx, prob);
++ distance = ctx->rep3;
++ ctx->rep3 = ctx->rep2;
++ }
++ ctx->rep2 = ctx->rep1;
++ }
++ ctx->rep1 = ctx->rep0;
++ ctx->rep0 = distance;
++ }
++ ctx->state = ctx->state < LZMA_NUM_LIT_STATES ? 8 : 11;
++ prob = p + LZMA_REP_LEN_CODER;
++ }
++
++ prob_len = prob + LZMA_LEN_CHOICE;
++ if (rc_is_bit_0(ctx, prob_len)) {
++ rc_update_bit_0(ctx, prob_len);
++ prob_len = (prob + LZMA_LEN_LOW
++ + (pos_state <<
++ LZMA_LEN_NUM_LOW_BITS));
++ offset = 0;
++ num_bits = LZMA_LEN_NUM_LOW_BITS;
++ } else {
++ rc_update_bit_1(ctx, prob_len);
++ prob_len = prob + LZMA_LEN_CHOICE_2;
++ if (rc_is_bit_0(ctx, prob_len)) {
++ rc_update_bit_0(ctx, prob_len);
++ prob_len = (prob + LZMA_LEN_MID
++ + (pos_state <<
++ LZMA_LEN_NUM_MID_BITS));
++ offset = 1 << LZMA_LEN_NUM_LOW_BITS;
++ num_bits = LZMA_LEN_NUM_MID_BITS;
++ } else {
++ rc_update_bit_1(ctx, prob_len);
++ prob_len = prob + LZMA_LEN_HIGH;
++ offset = ((1 << LZMA_LEN_NUM_LOW_BITS)
++ + (1 << LZMA_LEN_NUM_MID_BITS));
++ num_bits = LZMA_LEN_NUM_HIGH_BITS;
++ }
++ }
++
++ rc_bit_tree_decode(ctx, prob_len, num_bits, &len);
++ len += offset;
++
++ if (ctx->state < 4) {
++ int pos_slot;
++
++ ctx->state += LZMA_NUM_LIT_STATES;
++ prob =
++ p + LZMA_POS_SLOT +
++ ((len <
++ LZMA_NUM_LEN_TO_POS_STATES ? len :
++ LZMA_NUM_LEN_TO_POS_STATES - 1)
++ << LZMA_NUM_POS_SLOT_BITS);
++ rc_bit_tree_decode(ctx, prob,
++ LZMA_NUM_POS_SLOT_BITS,
++ &pos_slot);
++ if (pos_slot >= LZMA_START_POS_MODEL_INDEX) {
++ int i, mi;
++ num_bits = (pos_slot >> 1) - 1;
++ ctx->rep0 = 2 | (pos_slot & 1);
++ if (pos_slot < LZMA_END_POS_MODEL_INDEX) {
++ ctx->rep0 <<= num_bits;
++ prob = p + LZMA_SPEC_POS +
++ ctx->rep0 - pos_slot - 1;
++ } else {
++ num_bits -= LZMA_NUM_ALIGN_BITS;
++ while (num_bits--)
++ ctx->rep0 = (ctx->rep0 << 1) |
++ rc_direct_bit(ctx);
++ prob = p + LZMA_ALIGN;
++ ctx->rep0 <<= LZMA_NUM_ALIGN_BITS;
++ num_bits = LZMA_NUM_ALIGN_BITS;
++ }
++ i = 1;
++ mi = 1;
++ while (num_bits--) {
++ if (rc_get_bit(ctx, prob + mi, &mi))
++ ctx->rep0 |= i;
++ i <<= 1;
++ }
++ } else
++ ctx->rep0 = pos_slot;
++ if (++(ctx->rep0) == 0)
++ return;
++ }
++
++ len += LZMA_MATCH_MIN_LEN;
++
++ copy_bytes(ctx, ctx->rep0, len);
++}
++
++
++static int
++do_unlzma(struct unlzma_ctx *ctx)
++{
++ u8 hdr_buf[sizeof(struct lzma_header)];
++ struct lzma_header *header = (struct lzma_header *)hdr_buf;
++ u32 pos_state_mask;
++ u32 literal_pos_mask;
++ int lc, pb, lp;
++ int num_probs;
++ int i, mi;
++ u16 *p;
++
++ for (i = 0; i < sizeof(struct lzma_header); i++) {
++ hdr_buf[i] = rc_read(ctx);
++ }
++
++ ctx->pos = 0;
++ get_buffer(ctx);
++ ctx->active = true;
++ ctx->state = 0;
++ ctx->rep0 = ctx->rep1 = ctx->rep2 = ctx->rep3 = 1;
++
++ ctx->previous_byte = 0;
++ ctx->code = 0;
++ ctx->range = 0xFFFFFFFF;
++
++ ctx->dict_size = le32_to_cpu(header->dict_size);
++
++ if (header->pos >= (9 * 5 * 5))
++ return -1;
++
++ mi = 0;
++ lc = header->pos;
++ while (lc >= 9) {
++ mi++;
++ lc -= 9;
++ }
++ pb = 0;
++ lp = mi;
++ while (lp >= 5) {
++ pb++;
++ lp -= 5;
++ }
++ pos_state_mask = (1 << pb) - 1;
++ literal_pos_mask = (1 << lp) - 1;
++
++ if (ctx->dict_size == 0)
++ ctx->dict_size = 1;
++
++ num_probs = LZMA_BASE_SIZE + (LZMA_LIT_SIZE << (lc + lp));
++ if (ctx->workspace_size < num_probs * sizeof(*p)) {
++ if (ctx->workspace)
++ vfree(ctx->workspace);
++ ctx->workspace = vmalloc(num_probs * sizeof(*p));
++ }
++ p = (u16 *) ctx->workspace;
++ if (!p)
++ return -1;
++
++ num_probs = LZMA_LITERAL + (LZMA_LIT_SIZE << (lc + lp));
++ for (i = 0; i < num_probs; i++)
++ p[i] = (1 << RC_MODEL_TOTAL_BITS) >> 1;
++
++ for (i = 0; i < 5; i++)
++ rc_get_code(ctx);
++
++ while (1) {
++ int pos_state = ctx->pos & pos_state_mask;
++ u16 *prob = p + LZMA_IS_MATCH +
++ (ctx->state << LZMA_NUM_POS_BITS_MAX) + pos_state;
++ if (rc_is_bit_0(ctx, prob))
++ process_bit0(ctx, p, pos_state, prob,
++ lc, literal_pos_mask);
++ else {
++ process_bit1(ctx, p, pos_state, prob);
++ if (ctx->rep0 == 0)
++ break;
++ }
++ if (unlzma_should_stop(ctx))
++ break;
++ }
++
++ return ctx->pos;
++}
++
++
++static void
++unlzma_reset_buf(struct unlzma_ctx *ctx)
++{
++ ctx->avail_in = 0;
++ ctx->next_in = NULL;
++ ctx->avail_out = 0;
++ ctx->next_out = NULL;
++}
++
++static int
++unlzma_thread(void *data)
++{
++ struct unlzma_ctx *ctx = data;
++
++ mutex_lock(&ctx->mutex);
++ do {
++ if (do_unlzma(ctx) < 0)
++ ctx->pos = 0;
++ unlzma_reset_buf(ctx);
++ ctx->cancel = false;
++ ctx->active = false;
++ while (ctx->head) {
++ struct unlzma_buffer *bh = ctx->head;
++ ctx->head = bh->last;
++ kfree(bh);
++ }
++ } while (!kthread_should_stop());
++ mutex_unlock(&ctx->mutex);
++ return 0;
++}
++
++
++static int
++unlzma_init(struct crypto_tfm *tfm)
++{
++ return 0;
++}
++
++static void
++unlzma_cancel(struct unlzma_ctx *ctx)
++{
++ unlzma_reset_buf(ctx);
++
++ if (!ctx->active)
++ return;
++
++ ctx->cancel = true;
++ do {
++ mutex_unlock(&ctx->mutex);
++ wake_up(&ctx->next_req);
++ schedule();
++ mutex_lock(&ctx->mutex);
++ } while (ctx->cancel);
++}
++
++
++static void
++unlzma_exit(struct crypto_tfm *tfm)
++{
++ struct unlzma_ctx *ctx = crypto_tfm_ctx(tfm);
++
++ if (ctx->thread) {
++ unlzma_cancel(ctx);
++ kthread_stop(ctx->thread);
++ ctx->thread = NULL;
++ }
++}
++
++static int
++unlzma_decompress_setup(struct crypto_pcomp *tfm, void *p, unsigned int len)
++{
++ struct unlzma_ctx *ctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
++ int ret = 0;
++
++ if (ctx->thread)
++ return 0;
++
++ mutex_init(&ctx->mutex);
++ init_waitqueue_head(&ctx->next_req);
++ ctx->thread = kthread_run(unlzma_thread, ctx, "unlzma/%d", instance++);
++ if (IS_ERR(ctx->thread)) {
++ ret = PTR_ERR(ctx->thread);
++ ctx->thread = NULL;
++ }
++
++ return ret;
++}
++
++static int
++unlzma_decompress_init(struct crypto_pcomp *tfm)
++{
++ struct unlzma_ctx *ctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
++
++ ctx->pos = 0;
++ return 0;
++}
++
++static void
++unlzma_wait_complete(struct unlzma_ctx *ctx, bool finish)
++{
++ do {
++ mutex_unlock(&ctx->mutex);
++ wake_up(&ctx->next_req);
++ schedule();
++ mutex_lock(&ctx->mutex);
++ } while (ctx->active && (ctx->avail_in > 0) && (ctx->avail_out > 0));
++}
++
++static int
++unlzma_decompress_update(struct crypto_pcomp *tfm, struct comp_request *req)
++{
++ struct unlzma_ctx *ctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
++ size_t pos = 0;
++
++ mutex_lock(&ctx->mutex);
++ if (!ctx->active && !req->avail_in)
++ goto out;
++
++ pos = ctx->pos;
++ ctx->next_in = req->next_in;
++ ctx->avail_in = req->avail_in;
++ ctx->next_out = req->next_out;
++ ctx->avail_out = req->avail_out;
++
++ unlzma_wait_complete(ctx, false);
++
++ req->next_in = ctx->next_in;
++ req->avail_in = ctx->avail_in;
++ req->next_out = ctx->next_out;
++ req->avail_out = ctx->avail_out;
++ pos = ctx->pos - pos;
++
++out:
++ mutex_unlock(&ctx->mutex);
++ return pos;
++}
++
++static int
++unlzma_decompress_final(struct crypto_pcomp *tfm, struct comp_request *req)
++{
++ struct unlzma_ctx *ctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
++ int ret = 0;
++
++ /* cancel pending operation */
++ mutex_lock(&ctx->mutex);
++ if (ctx->active) {
++ // ret = -EINVAL;
++ unlzma_cancel(ctx);
++ }
++ ctx->pos = 0;
++ mutex_unlock(&ctx->mutex);
++ return ret;
++}
++
++
++static struct pcomp_alg unlzma_alg = {
++ .decompress_setup = unlzma_decompress_setup,
++ .decompress_init = unlzma_decompress_init,
++ .decompress_update = unlzma_decompress_update,
++ .decompress_final = unlzma_decompress_final,
++
++ .base = {
++ .cra_name = "lzma",
++ .cra_flags = CRYPTO_ALG_TYPE_PCOMPRESS,
++ .cra_ctxsize = sizeof(struct unlzma_ctx),
++ .cra_module = THIS_MODULE,
++ .cra_init = unlzma_init,
++ .cra_exit = unlzma_exit,
++ }
++};
++
++static int __init
++unlzma_mod_init(void)
++{
++ return crypto_register_pcomp(&unlzma_alg);
++}
++
++static void __exit
++unlzma_mod_exit(void)
++{
++ crypto_unregister_pcomp(&unlzma_alg);
++}
++
++module_init(unlzma_mod_init);
++module_exit(unlzma_mod_exit);
++
++MODULE_LICENSE("GPL");
++MODULE_DESCRIPTION("LZMA Decompression Algorithm");
++MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
+--- a/crypto/Kconfig
++++ b/crypto/Kconfig
+@@ -728,6 +728,12 @@ config CRYPTO_ZLIB
+ help
+ This is the zlib algorithm.
+
++config CRYPTO_UNLZMA
++ tristate "LZMA decompression"
++ select CRYPTO_PCOMP
++ help
++ This is the lzma decompression module.
++
+ config CRYPTO_LZO
+ tristate "LZO compression algorithm"
+ select CRYPTO_ALGAPI
+--- a/crypto/Makefile
++++ b/crypto/Makefile
+@@ -73,6 +73,7 @@ obj-$(CONFIG_CRYPTO_SEED) += seed.o
+ obj-$(CONFIG_CRYPTO_SALSA20) += salsa20_generic.o
+ obj-$(CONFIG_CRYPTO_DEFLATE) += deflate.o
+ obj-$(CONFIG_CRYPTO_ZLIB) += zlib.o
++obj-$(CONFIG_CRYPTO_UNLZMA) += unlzma.o
+ obj-$(CONFIG_CRYPTO_MICHAEL_MIC) += michael_mic.o
+ obj-$(CONFIG_CRYPTO_CRC32C) += crc32c.o
+ obj-$(CONFIG_CRYPTO_AUTHENC) += authenc.o
+--- /dev/null
++++ b/crypto/unlzma.h
+@@ -0,0 +1,80 @@
++/* LZMA uncompresion module for pcomp
++ * Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
++ *
++ * Based on:
++ * Initial Linux kernel adaptation
++ * Copyright (C) 2006 Alain < alain@knaff.lu >
++ *
++ * Based on small lzma deflate implementation/Small range coder
++ * implementation for lzma.
++ * Copyright (C) 2006 Aurelien Jacobs < aurel@gnuage.org >
++ *
++ * Based on LzmaDecode.c from the LZMA SDK 4.22 (http://www.7-zip.org/)
++ * Copyright (C) 1999-2005 Igor Pavlov
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published
++ * by the Free Software Foundation.
++ */
++#ifndef __UNLZMA_H
++#define __UNLZMA_H
++
++struct lzma_header {
++ __u8 pos;
++ __le32 dict_size;
++} __attribute__ ((packed)) ;
++
++
++#define RC_TOP_BITS 24
++#define RC_MOVE_BITS 5
++#define RC_MODEL_TOTAL_BITS 11
++
++#define LZMA_BASE_SIZE 1846
++#define LZMA_LIT_SIZE 768
++
++#define LZMA_NUM_POS_BITS_MAX 4
++
++#define LZMA_LEN_NUM_LOW_BITS 3
++#define LZMA_LEN_NUM_MID_BITS 3
++#define LZMA_LEN_NUM_HIGH_BITS 8
++
++#define LZMA_LEN_CHOICE 0
++#define LZMA_LEN_CHOICE_2 (LZMA_LEN_CHOICE + 1)
++#define LZMA_LEN_LOW (LZMA_LEN_CHOICE_2 + 1)
++#define LZMA_LEN_MID (LZMA_LEN_LOW \
++ + (1 << (LZMA_NUM_POS_BITS_MAX + LZMA_LEN_NUM_LOW_BITS)))
++#define LZMA_LEN_HIGH (LZMA_LEN_MID \
++ +(1 << (LZMA_NUM_POS_BITS_MAX + LZMA_LEN_NUM_MID_BITS)))
++#define LZMA_NUM_LEN_PROBS (LZMA_LEN_HIGH + (1 << LZMA_LEN_NUM_HIGH_BITS))
++
++#define LZMA_NUM_STATES 12
++#define LZMA_NUM_LIT_STATES 7
++
++#define LZMA_START_POS_MODEL_INDEX 4
++#define LZMA_END_POS_MODEL_INDEX 14
++#define LZMA_NUM_FULL_DISTANCES (1 << (LZMA_END_POS_MODEL_INDEX >> 1))
++
++#define LZMA_NUM_POS_SLOT_BITS 6
++#define LZMA_NUM_LEN_TO_POS_STATES 4
++
++#define LZMA_NUM_ALIGN_BITS 4
++
++#define LZMA_MATCH_MIN_LEN 2
++
++#define LZMA_IS_MATCH 0
++#define LZMA_IS_REP (LZMA_IS_MATCH + (LZMA_NUM_STATES << LZMA_NUM_POS_BITS_MAX))
++#define LZMA_IS_REP_G0 (LZMA_IS_REP + LZMA_NUM_STATES)
++#define LZMA_IS_REP_G1 (LZMA_IS_REP_G0 + LZMA_NUM_STATES)
++#define LZMA_IS_REP_G2 (LZMA_IS_REP_G1 + LZMA_NUM_STATES)
++#define LZMA_IS_REP_0_LONG (LZMA_IS_REP_G2 + LZMA_NUM_STATES)
++#define LZMA_POS_SLOT (LZMA_IS_REP_0_LONG \
++ + (LZMA_NUM_STATES << LZMA_NUM_POS_BITS_MAX))
++#define LZMA_SPEC_POS (LZMA_POS_SLOT \
++ +(LZMA_NUM_LEN_TO_POS_STATES << LZMA_NUM_POS_SLOT_BITS))
++#define LZMA_ALIGN (LZMA_SPEC_POS \
++ + LZMA_NUM_FULL_DISTANCES - LZMA_END_POS_MODEL_INDEX)
++#define LZMA_LEN_CODER (LZMA_ALIGN + (1 << LZMA_NUM_ALIGN_BITS))
++#define LZMA_REP_LEN_CODER (LZMA_LEN_CODER + LZMA_NUM_LEN_PROBS)
++#define LZMA_LITERAL (LZMA_REP_LEN_CODER + LZMA_NUM_LEN_PROBS)
++
++#endif
--- /dev/null
+--- a/fs/squashfs/Kconfig
++++ b/fs/squashfs/Kconfig
+@@ -2,7 +2,6 @@ config SQUASHFS
+ tristate "SquashFS 4.0 - Squashed file system support"
+ depends on BLOCK
+ select CRYPTO
+- select CRYPTO_ZLIB
+ help
+ Saying Y here includes support for SquashFS 4.0 (a Compressed
+ Read-Only File System). Squashfs is a highly compressed read-only
+@@ -37,6 +36,26 @@ config SQUASHFS_EMBEDDED
+
+ If unsure, say N.
+
++config SQUASHFS_SUPPORT_ZLIB
++ bool
++ prompt "Support ZLIB compression" if SQUASHFS_SUPPORT_LZMA
++ depends on SQUASHFS
++ select CRYPTO_ZLIB
++ default y
++ help
++ ZLIB is the default compression used in squashfs. If you are
++ using LZMA compression instead, you can remove support for ZLIB
++ entirely.
++
++config SQUASHFS_SUPPORT_LZMA
++ bool "Support LZMA compression"
++ depends on SQUASHFS
++ select CRYPTO_LZMA
++ help
++ By default SquashFS uses ZLIB compression, however (if your tools
++ support it, you can use LZMA instead, which saves space.
++
++
+ config SQUASHFS_FRAGMENT_CACHE_SIZE
+ int "Number of fragments cached" if SQUASHFS_EMBEDDED
+ depends on SQUASHFS
+--- a/fs/squashfs/squashfs_fs.h
++++ b/fs/squashfs/squashfs_fs.h
+@@ -212,6 +212,7 @@ struct meta_index {
+ * definitions for structures on disk
+ */
+ #define ZLIB_COMPRESSION 1
++#define LZMA_COMPRESSION 2
+
+ struct squashfs_super_block {
+ __le32 s_magic;
+--- a/fs/squashfs/super.c
++++ b/fs/squashfs/super.c
+@@ -47,13 +47,65 @@
+ #include "squashfs.h"
+
+
+-#define SQUASHFS_CRYPTO_ALG "zlib"
++static int squashfs_setup_zlib(struct squashfs_sb_info *msblk)
++{
++ int err = -EOPNOTSUPP;
++
++#ifdef CONFIG_SQUASHFS_SUPPORT_ZLIB
++ struct {
++ struct nlattr nla;
++ int val;
++ } params = {
++ .nla = {
++ .nla_len = nla_attr_size(sizeof(int)),
++ .nla_type = ZLIB_DECOMP_WINDOWBITS,
++ },
++ .val = DEF_WBITS,
++ };
++
++ msblk->tfm = crypto_alloc_pcomp("zlib", 0,
++ CRYPTO_ALG_ASYNC);
++ if (IS_ERR(msblk->tfm)) {
++ ERROR("Failed to load zlib crypto module\n");
++ return PTR_ERR(msblk->tfm);
++ }
++
++ err = crypto_decompress_setup(msblk->tfm, ¶ms, sizeof(params));
++ if (err) {
++ ERROR("Failed to set up decompression parameters\n");
++ crypto_free_pcomp(msblk->tfm);
++ }
++#endif
+
++ return err;
++}
++
++static int squashfs_setup_lzma(struct squashfs_sb_info *msblk)
++{
++ int err = -EOPNOTSUPP;
++
++#ifdef CONFIG_SQUASHFS_SUPPORT_LZMA
++ msblk->tfm = crypto_alloc_pcomp("lzma", 0,
++ CRYPTO_ALG_ASYNC);
++ if (IS_ERR(msblk->tfm)) {
++ ERROR("Failed to load lzma crypto module\n");
++ return PTR_ERR(msblk->tfm);
++ }
++
++ err = crypto_decompress_setup(msblk->tfm, NULL, 0);
++ if (err) {
++ ERROR("Failed to set up decompression parameters\n");
++ crypto_free_pcomp(msblk->tfm);
++ }
++#endif
++
++ return err;
++}
+
+ static struct file_system_type squashfs_fs_type;
+ static struct super_operations squashfs_super_ops;
+
+-static int supported_squashfs_filesystem(short major, short minor, short comp)
++static int supported_squashfs_filesystem(short major, short minor)
+ {
+ if (major < SQUASHFS_MAJOR) {
+ ERROR("Major/Minor mismatch, older Squashfs %d.%d "
+@@ -66,9 +118,6 @@ static int supported_squashfs_filesystem
+ return -EINVAL;
+ }
+
+- if (comp != ZLIB_COMPRESSION)
+- return -EINVAL;
+-
+ return 0;
+ }
+
+@@ -83,16 +132,6 @@ static int squashfs_fill_super(struct su
+ unsigned short flags;
+ unsigned int fragments;
+ u64 lookup_table_start;
+- struct {
+- struct nlattr nla;
+- int val;
+- } params = {
+- .nla = {
+- .nla_len = nla_attr_size(sizeof(int)),
+- .nla_type = ZLIB_DECOMP_WINDOWBITS,
+- },
+- .val = DEF_WBITS,
+- };
+ int err;
+
+ TRACE("Entered squashfs_fill_superblock\n");
+@@ -104,21 +143,6 @@ static int squashfs_fill_super(struct su
+ }
+ msblk = sb->s_fs_info;
+
+- msblk->tfm = crypto_alloc_pcomp(SQUASHFS_CRYPTO_ALG, 0,
+- CRYPTO_ALG_ASYNC);
+- if (IS_ERR(msblk->tfm)) {
+- ERROR("Failed to load %s crypto module\n",
+- SQUASHFS_CRYPTO_ALG);
+- err = PTR_ERR(msblk->tfm);
+- goto failed_pcomp;
+- }
+-
+- err = crypto_decompress_setup(msblk->tfm, ¶ms, sizeof(params));
+- if (err) {
+- ERROR("Failed to set up decompression parameters\n");
+- goto failure;
+- }
+-
+ sblk = kzalloc(sizeof(*sblk), GFP_KERNEL);
+ if (sblk == NULL) {
+ ERROR("Failed to allocate squashfs_super_block\n");
+@@ -158,8 +182,21 @@ static int squashfs_fill_super(struct su
+
+ /* Check the MAJOR & MINOR versions and compression type */
+ err = supported_squashfs_filesystem(le16_to_cpu(sblk->s_major),
+- le16_to_cpu(sblk->s_minor),
+- le16_to_cpu(sblk->compression));
++ le16_to_cpu(sblk->s_minor));
++ if (err < 0)
++ goto failed_mount;
++
++ switch(le16_to_cpu(sblk->compression)) {
++ case ZLIB_COMPRESSION:
++ err = squashfs_setup_zlib(msblk);
++ break;
++ case LZMA_COMPRESSION:
++ err = squashfs_setup_lzma(msblk);
++ break;
++ default:
++ err = -EINVAL;
++ break;
++ }
+ if (err < 0)
+ goto failed_mount;
+
+@@ -305,21 +342,16 @@ allocate_root:
+ return 0;
+
+ failed_mount:
++ if (msblk->tfm)
++ crypto_free_pcomp(msblk->tfm);
+ squashfs_cache_delete(msblk->block_cache);
+ squashfs_cache_delete(msblk->fragment_cache);
+ squashfs_cache_delete(msblk->read_page);
+ kfree(msblk->inode_lookup_table);
+ kfree(msblk->fragment_index);
+ kfree(msblk->id_table);
+- crypto_free_pcomp(msblk->tfm);
+- kfree(sb->s_fs_info);
+- sb->s_fs_info = NULL;
+ kfree(sblk);
+- return err;
+-
+ failure:
+- crypto_free_pcomp(msblk->tfm);
+-failed_pcomp:
+ kfree(sb->s_fs_info);
+ sb->s_fs_info = NULL;
+ return err;
int err;
if (!(dev = alloc_etherdev(sizeof(struct port))))
-@@ -1212,22 +1257,9 @@ static int __devinit eth_init_one(struct
+@@ -1207,18 +1252,10 @@ static int __devinit eth_init_one(struct
__raw_writel(DEFAULT_CORE_CNTRL, &port->regs->core_control);
udelay(50);
- snprintf(phy_id, BUS_ID_SIZE, PHY_ID_FMT, "0", plat->phy);
- port->phydev = phy_connect(dev, phy_id, &ixp4xx_adjust_link, 0,
- PHY_INTERFACE_MODE_MII);
-- if (IS_ERR(port->phydev)) {
-- printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
-- return PTR_ERR(port->phydev);
-- }
--
+- if ((err = IS_ERR(port->phydev)))
++ err = ixp4xx_phy_connect(dev);
++ if (err)
+ goto err_free_mem;
+
- /* mask with MAC supported features */
- port->phydev->supported &= PHY_BASIC_FEATURES;
- port->phydev->advertising = port->phydev->supported;
-
- port->phydev->irq = PHY_POLL;
-
-- printk(KERN_INFO "%s: MII PHY %i on %s\n", dev->name, plat->phy,
-- npe_name(port->npe));
-+ err = ixp4xx_phy_connect(dev);
-+ if (err)
-+ goto err_unreg;
-
- return 0;
+ if ((err = register_netdev(dev)))
+ goto err_phy_dis;
-@@ -1245,7 +1277,7 @@ static int __devexit eth_remove_one(stru
+@@ -1245,7 +1282,7 @@ static int __devexit eth_remove_one(stru
struct net_device *dev = platform_get_drvdata(pdev);
struct port *port = netdev_priv(dev);
- phy_disconnect(port->phydev);
+ ixp4xx_phy_disconnect(dev);
unregister_netdev(dev);
+ phy_disconnect(port->phydev);
npe_port_tab[NPE_ID(port->id)] = NULL;
- platform_set_drvdata(pdev, NULL);
projects / openwrt.git / commitdiff