litmus-rt.git - The LITMUS^RT kernel.

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author	Kyungmin Park <kyungmin.park@samsung.com>	2011-11-08 05:57:59 -0500
committer	Kukjin Kim <kgene.kim@samsung.com>	2011-11-09 00:07:32 -0500
commit	76ee4557137ce12a60a1e1a070ed341182163a64 (patch)
tree	baea1df596afc7166da09dea6b99d79ff533cbea /net/sched/cls_route.c
parent	1ea6b8f48918282bdca0b32a34095504ee65bab5 (diff)

ARM: EXYNOS: Fix compiler error with THIS_MODULE

CC arch/arm/mach-exynos/cpuidle.o arch/arm/mach-exynos/cpuidle.c:36: error: 'THIS_MODULE' undeclared here (not in a function) arch/arm/mach-exynos/cpuidle.c: In function 'exynos4_enter_idle': arch/arm/mach-exynos/cpuidle.c:42: error: storage size of 'before' isn't known arch/arm/mach-exynos/cpuidle.c:42: error: storage size of 'after' isn't known arch/arm/mach-exynos/cpuidle.c:46: error: implicit declaration of function 'do_gettimeofday' arch/arm/mach-exynos/cpuidle.c:52: error: 'USEC_PER_SEC' undeclared (first use in this function) arch/arm/mach-exynos/cpuidle.c:52: error: (Each undeclared identifier is reported only once arch/arm/mach-exynos/cpuidle.c:52: error: for each function it appears in.) arch/arm/mach-exynos/cpuidle.c:42: warning: unused variable 'after' arch/arm/mach-exynos/cpuidle.c:42: warning: unused variable 'before' make[1]: *** [arch/arm/mach-exynos/cpuidle.o] Error 1 Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> [kgene.kim@samsung.com: Fixed as per Stephen's suggestion] Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

Diffstat (limited to 'net/sched/cls_route.c')

0 files changed, 0 insertions, 0 deletions

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/* * Block chaining cipher operations. * * Generic encrypt/decrypt wrapper for ciphers, handles operations across * multiple page boundaries by using temporary blocks. In user context, * the kernel is given a chance to schedule us once per page. * * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au> * * 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 <crypto/aead.h> #include <crypto/internal/skcipher.h> #include <crypto/scatterwalk.h> #include <linux/errno.h> #include <linux/hardirq.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/seq_file.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/cryptouser.h> #include <net/netlink.h> #include "internal.h" enum { BLKCIPHER_WALK_PHYS = 1 << 0, BLKCIPHER_WALK_SLOW = 1 << 1, BLKCIPHER_WALK_COPY = 1 << 2, BLKCIPHER_WALK_DIFF = 1 << 3, }; static int blkcipher_walk_next(struct blkcipher_desc *desc, struct blkcipher_walk *walk); static int blkcipher_walk_first(struct blkcipher_desc *desc, struct blkcipher_walk *walk); static inline void blkcipher_map_src(struct blkcipher_walk *walk) { walk->src.virt.addr = scatterwalk_map(&walk->in); } static inline void blkcipher_map_dst(struct blkcipher_walk *walk) { walk->dst.virt.addr = scatterwalk_map(&walk->out); } static inline void blkcipher_unmap_src(struct blkcipher_walk *walk) { scatterwalk_unmap(walk->src.virt.addr); } static inline void blkcipher_unmap_dst(struct blkcipher_walk *walk) { scatterwalk_unmap(walk->dst.virt.addr); } /* Get a spot of the specified length that does not straddle a page. * The caller needs to ensure that there is enough space for this operation. */ static inline u8 *blkcipher_get_spot(u8 *start, unsigned int len) { u8 *end_page = (u8 *)(((unsigned long)(start + len - 1)) & PAGE_MASK); return max(start, end_page); } static inline unsigned int blkcipher_done_slow(struct blkcipher_walk *walk, unsigned int bsize) { u8 *addr; addr = (u8 *)ALIGN((unsigned long)walk->buffer, walk->alignmask + 1); addr = blkcipher_get_spot(addr, bsize); scatterwalk_copychunks(addr, &walk->out, bsize, 1); return bsize; } static inline unsigned int blkcipher_done_fast(struct blkcipher_walk *walk, unsigned int n) { if (walk->flags & BLKCIPHER_WALK_COPY) { blkcipher_map_dst(walk); memcpy(walk->dst.virt.addr, walk->page, n); blkcipher_unmap_dst(walk); } else if (!(walk->flags & BLKCIPHER_WALK_PHYS)) { if (walk->flags & BLKCIPHER_WALK_DIFF) blkcipher_unmap_dst(walk); blkcipher_unmap_src(walk); } scatterwalk_advance(&walk->in, n); scatterwalk_advance(&walk->out, n); return n; } int blkcipher_walk_done(struct blkcipher_desc *desc, struct blkcipher_walk *walk, int err) { unsigned int nbytes = 0; if (likely(err >= 0)) { unsigned int n = walk->nbytes - err; if (likely(!(walk->flags & BLKCIPHER_WALK_SLOW))) n = blkcipher_done_fast(walk, n); else if (WARN_ON(err)) { err = -EINVAL; goto err; } else n = blkcipher_done_slow(walk, n); nbytes = walk->total - n; err = 0; } scatterwalk_done(&walk->in, 0, nbytes); scatterwalk_done(&walk->out, 1, nbytes); err: walk->total = nbytes; walk->nbytes = nbytes; if (nbytes) { crypto_yield(desc->flags); return blkcipher_walk_next(desc, walk); } if (walk->iv != desc->info) memcpy(desc->info, walk->iv, walk->ivsize); if (walk->buffer != walk->page) kfree(walk->buffer); if (walk->page) free_page((unsigned long)walk->page); return err; } EXPORT_SYMBOL_GPL(blkcipher_walk_done); static inline int blkcipher_next_slow(struct blkcipher_desc *desc, struct blkcipher_walk *walk, unsigned int bsize, unsigned int alignmask) { unsigned int n; unsigned aligned_bsize = ALIGN(bsize, alignmask + 1); if (walk->buffer) goto ok; walk->buffer = walk->page; if (walk->buffer) goto ok; n = aligned_bsize * 3 - (alignmask + 1) + (alignmask & ~(crypto_tfm_ctx_alignment() - 1)); walk->buffer = kmalloc(n, GFP_ATOMIC); if (!walk->buffer) return blkcipher_walk_done(desc, walk, -ENOMEM); ok: walk->dst.virt.addr = (u8 *)ALIGN((unsigned long)walk->buffer, alignmask + 1); walk->dst.virt.addr = blkcipher_get_spot(walk->dst.virt.addr, bsize); walk->src.virt.addr = blkcipher_get_spot(walk->dst.virt.addr + aligned_bsize, bsize); scatterwalk_copychunks(walk->src.virt.addr, &walk->in, bsize, 0); walk->nbytes = bsize; walk->flags |= BLKCIPHER_WALK_SLOW; return 0; } static inline int blkcipher_next_copy(struct blkcipher_walk *walk) { u8 *tmp = walk->page; blkcipher_map_src(walk); memcpy(tmp, walk->src.virt.addr, walk->nbytes); blkcipher_unmap_src(walk); walk->src.virt.addr = tmp; walk->dst.virt.addr = tmp; return 0; } static inline int blkcipher_next_fast(struct blkcipher_desc *desc, struct blkcipher_walk *walk) { unsigned long diff; walk->src.phys.page = scatterwalk_page(&walk->in); walk->src.phys.offset = offset_in_page(walk->in.offset); walk->dst.phys.page = scatterwalk_page(&walk->out); walk->dst.phys.offset = offset_in_page(walk->out.offset); if (walk->flags & BLKCIPHER_WALK_PHYS) return 0; diff = walk->src.phys.offset - walk->dst.phys.offset; diff |= walk->src.virt.page - walk->dst.virt.page; blkcipher_map_src(walk); walk->dst.virt.addr = walk->src.virt.addr; if (diff) { walk->flags |= BLKCIPHER_WALK_DIFF; blkcipher_map_dst(walk); } return 0; } static int blkcipher_walk_next(struct blkcipher_desc *desc, struct blkcipher_walk *walk) { unsigned int bsize; unsigned int n; int err; n = walk->total; if (unlikely(n < walk->cipher_blocksize)) { desc->flags |= CRYPTO_TFM_RES_BAD_BLOCK_LEN; return blkcipher_walk_done(desc, walk, -EINVAL); } bsize = min(walk->walk_blocksize, n); walk->flags &= ~(BLKCIPHER_WALK_SLOW | BLKCIPHER_WALK_COPY | BLKCIPHER_WALK_DIFF); if (!scatterwalk_aligned(&walk->in, walk->alignmask) || !scatterwalk_aligned(&walk->out, walk->alignmask)) { walk->flags |= BLKCIPHER_WALK_COPY; if (!walk->page) { walk->page = (void *)__get_free_page(GFP_ATOMIC); if (!walk->page) n = 0; } } n = scatterwalk_clamp(&walk->in, n); n = scatterwalk_clamp(&walk->out, n); if (unlikely(n < bsize)) { err = blkcipher_next_slow(desc, walk, bsize, walk->alignmask); goto set_phys_lowmem; } walk->nbytes = n; if (walk->flags & BLKCIPHER_WALK_COPY) { err = blkcipher_next_copy(walk); goto set_phys_lowmem; } return blkcipher_next_fast(desc, walk); set_phys_lowmem: if (walk->flags & BLKCIPHER_WALK_PHYS) { walk->src.phys.page = virt_to_page(walk->src.virt.addr); walk->dst.phys.page = virt_to_page(walk->dst.virt.addr); walk->src.phys.offset &= PAGE_SIZE - 1; walk->dst.phys.offset &= PAGE_SIZE - 1; } return err; } static inline int blkcipher_copy_iv(struct blkcipher_walk *walk) { unsigned bs = walk->walk_blocksize; unsigned aligned_bs = ALIGN(bs, walk->alignmask + 1); unsigned int size = aligned_bs * 2 + walk->ivsize + max(aligned_bs, walk->ivsize) - (walk->alignmask + 1); u8 *iv; size += walk->alignmask & ~(crypto_tfm_ctx_alignment() - 1); walk->buffer = kmalloc(size, GFP_ATOMIC); if (!walk->buffer) return -ENOMEM; iv = (u8 *)ALIGN((unsigned long)walk->buffer, walk->alignmask + 1); iv = blkcipher_get_spot(iv, bs) + aligned_bs; iv = blkcipher_get_spot(iv, bs) + aligned_bs; iv = blkcipher_get_spot(iv, walk->ivsize); walk->iv = memcpy(iv, walk->iv, walk->ivsize); return 0; } int blkcipher_walk_virt(struct blkcipher_desc *desc, struct blkcipher_walk *walk) { walk->flags &= ~BLKCIPHER_WALK_PHYS; walk->walk_blocksize = crypto_blkcipher_blocksize(desc->tfm); walk->cipher_blocksize = walk->walk_blocksize; walk->ivsize = crypto_blkcipher_ivsize(desc->tfm); walk->alignmask = crypto_blkcipher_alignmask(desc->tfm); return blkcipher_walk_first(desc, walk); } EXPORT_SYMBOL_GPL(blkcipher_walk_virt); int blkcipher_walk_phys(struct blkcipher_desc *desc, struct blkcipher_walk *walk) { walk->flags |= BLKCIPHER_WALK_PHYS; walk->walk_blocksize = crypto_blkcipher_blocksize(desc->tfm); walk->cipher_blocksize = walk->walk_blocksize; walk->ivsize = crypto_blkcipher_ivsize(desc->tfm); walk->alignmask = crypto_blkcipher_alignmask(desc->tfm); return blkcipher_walk_first(desc, walk); } EXPORT_SYMBOL_GPL(blkcipher_walk_phys); static int blkcipher_walk_first(struct blkcipher_desc *desc, struct blkcipher_walk *walk) { if (WARN_ON_ONCE(in_irq())) return -EDEADLK; walk->iv = desc->info; walk->nbytes = walk->total; if (unlikely(!walk->total)) return 0; walk->buffer = NULL; if (unlikely(((unsigned long)walk->iv & walk->alignmask))) { int err = blkcipher_copy_iv(walk); if (err) return err; } scatterwalk_start(&walk->in, walk->in.sg); scatterwalk_start(&walk->out, walk->out.sg); walk->page = NULL; return blkcipher_walk_next(desc, walk); } int blkcipher_walk_virt_block(struct blkcipher_desc *desc, struct blkcipher_walk *walk, unsigned int blocksize) { walk->flags &= ~BLKCIPHER_WALK_PHYS; walk->walk_blocksize = blocksize; walk->cipher_blocksize = crypto_blkcipher_blocksize(desc->tfm); walk->ivsize = crypto_blkcipher_ivsize(desc->tfm); walk->alignmask = crypto_blkcipher_alignmask(desc->tfm); return blkcipher_walk_first(desc, walk); } EXPORT_SYMBOL_GPL(blkcipher_walk_virt_block); int blkcipher_aead_walk_virt_block(struct blkcipher_desc *desc, struct blkcipher_walk *walk, struct crypto_aead *tfm, unsigned int blocksize) { walk->flags &= ~BLKCIPHER_WALK_PHYS; walk->walk_blocksize = blocksize; walk->cipher_blocksize = crypto_aead_blocksize(tfm); walk->ivsize = crypto_aead_ivsize(tfm); walk->alignmask = crypto_aead_alignmask(tfm); return blkcipher_walk_first(desc, walk); } EXPORT_SYMBOL_GPL(blkcipher_aead_walk_virt_block); static int setkey_unaligned(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen) { struct blkcipher_alg *cipher = &tfm->__crt_alg->cra_blkcipher; unsigned long alignmask = crypto_tfm_alg_alignmask(tfm); int ret; u8 *buffer, *alignbuffer; unsigned long absize; absize = keylen + alignmask; buffer = kmalloc(absize, GFP_ATOMIC); if (!buffer) return -ENOMEM; alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1); memcpy(alignbuffer, key, keylen); ret = cipher->setkey(tfm, alignbuffer, keylen); memset(alignbuffer, 0, keylen); kfree(buffer); return ret; } static int setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen) { struct blkcipher_alg *cipher = &tfm->__crt_alg->cra_blkcipher; unsigned long alignmask = crypto_tfm_alg_alignmask(tfm); if (keylen < cipher->min_keysize || keylen > cipher->max_keysize) { tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; return -EINVAL; } if ((unsigned long)key & alignmask) return setkey_unaligned(tfm, key, keylen); return cipher->setkey(tfm, key, keylen); } static int async_setkey(struct crypto_ablkcipher *tfm, const u8 *key, unsigned int keylen) { return setkey(crypto_ablkcipher_tfm(tfm), key, keylen); } static int async_encrypt(struct ablkcipher_request *req) { struct crypto_tfm *tfm = req->base.tfm; struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher; struct blkcipher_desc desc = { .tfm = __crypto_blkcipher_cast(tfm),


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