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

	Commit message (Collapse)	Author	Age
*	[PATCH] hwmon: hwmon vs i2c, second round (05/11)	Jean Delvare	2005-09-05
\| \| \| \| \| \| \|	The i2c_detect function has no more user, delete it. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
*	[PATCH] hwmon: hwmon vs i2c, second round (03/11)	Jean Delvare	2005-09-05
\| \| \| \| \| \| \| \| \| \|	We now have two identical structures, i2c_address_data in i2c-sensor.h and i2c_client_address_data in i2c.h. We can kill one of them, I choose to keep the one in i2c.h as it makes more sense (this structure is not specific to sensors.) Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
*	[PATCH] hwmon: hwmon vs i2c, second round (02/11)	Jean Delvare	2005-09-05
\| \| \| \| \| \| \| \| \| \| \| \|	The way i2c-sensor handles forced addresses could be optimized. It defines a structure (i2c_force_data) to associate a module parameter with a given kind value, but in fact this kind value is always the index of the structure in each array it is used in. So this additional value can be omitted, and still be deduced in the code handling these arrays. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
*	[PATCH] I2C: Separate non-i2c hwmon drivers from i2c-core (6/9)	Jean Delvare	2005-09-05
\| \| \| \| \| \| \| \| \| \| \|	Kill all isa-related stuff from i2c_detect, it's not used anymore. This is one major step in the directiom of merging i2c_probe and i2c_detect. The last obstacle I can think of is the different way forced addresses work between sensors and non-sensors i2c drivers. I'll deal with that in a later patchset. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
*	Linux-2.6.12-rc2v2.6.12-rc2	Linus Torvalds	2005-04-16
	Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!

/* * Software async crypto daemon. * * 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/algapi.h> #include <linux/err.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/kthread.h> #include <linux/list.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/scatterlist.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/spinlock.h> #define CRYPTD_MAX_QLEN 100 struct cryptd_state { spinlock_t lock; struct mutex mutex; struct crypto_queue queue; struct task_struct *task; }; struct cryptd_instance_ctx { struct crypto_spawn spawn; struct cryptd_state *state; }; struct cryptd_blkcipher_ctx { struct crypto_blkcipher *child; }; struct cryptd_blkcipher_request_ctx { crypto_completion_t complete; }; static inline struct cryptd_state *cryptd_get_state(struct crypto_tfm *tfm) { struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); struct cryptd_instance_ctx *ictx = crypto_instance_ctx(inst); return ictx->state; } static int cryptd_blkcipher_setkey(struct crypto_ablkcipher *parent, const u8 *key, unsigned int keylen) { struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(parent); struct crypto_blkcipher *child = ctx->child; int err; crypto_blkcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK); crypto_blkcipher_set_flags(child, crypto_ablkcipher_get_flags(parent) & CRYPTO_TFM_REQ_MASK); err = crypto_blkcipher_setkey(child, key, keylen); crypto_ablkcipher_set_flags(parent, crypto_blkcipher_get_flags(child) & CRYPTO_TFM_RES_MASK); return err; } static void cryptd_blkcipher_crypt(struct ablkcipher_request *req, struct crypto_blkcipher *child, int err, int (*crypt)(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int len)) { struct cryptd_blkcipher_request_ctx *rctx; struct blkcipher_desc desc; rctx = ablkcipher_request_ctx(req); if (unlikely(err == -EINPROGRESS)) { rctx->complete(&req->base, err); return; } desc.tfm = child; desc.info = req->info; desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP; err = crypt(&desc, req->dst, req->src, req->nbytes); req->base.complete = rctx->complete; local_bh_disable(); req->base.complete(&req->base, err); local_bh_enable(); } static void cryptd_blkcipher_encrypt(struct crypto_async_request *req, int err) { struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(req->tfm); struct crypto_blkcipher *child = ctx->child; cryptd_blkcipher_crypt(ablkcipher_request_cast(req), child, err, crypto_blkcipher_crt(child)->encrypt); } static void cryptd_blkcipher_decrypt(struct crypto_async_request *req, int err) { struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(req->tfm); struct crypto_blkcipher *child = ctx->child; cryptd_blkcipher_crypt(ablkcipher_request_cast(req), child, err, crypto_blkcipher_crt(child)->decrypt); } static int cryptd_blkcipher_enqueue(struct ablkcipher_request *req, crypto_completion_t complete) { struct cryptd_blkcipher_request_ctx *rctx = ablkcipher_request_ctx(req); struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); struct cryptd_state *state = cryptd_get_state(crypto_ablkcipher_tfm(tfm)); int err; rctx->complete = req->base.complete; req->base.complete = complete; spin_lock_bh(&state->lock); err = ablkcipher_enqueue_request(&state->queue, req); spin_unlock_bh(&state->lock); wake_up_process(state->task); return err; } static int cryptd_blkcipher_encrypt_enqueue(struct ablkcipher_request *req) { return cryptd_blkcipher_enqueue(req, cryptd_blkcipher_encrypt); } static int cryptd_blkcipher_decrypt_enqueue(struct ablkcipher_request *req) { return cryptd_blkcipher_enqueue(req, cryptd_blkcipher_decrypt); } static int cryptd_blkcipher_init_tfm(struct crypto_tfm *tfm) { struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); struct cryptd_instance_ctx *ictx = crypto_instance_ctx(inst); struct crypto_spawn *spawn = &ictx->spawn; struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(tfm); struct crypto_blkcipher *cipher; cipher = crypto_spawn_blkcipher(spawn); if (IS_ERR(cipher)) return PTR_ERR(cipher); ctx->child = cipher; tfm->crt_ablkcipher.reqsize = sizeof(struct cryptd_blkcipher_request_ctx); return 0; } static void cryptd_blkcipher_exit_tfm(struct crypto_tfm *tfm) { struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(tfm); struct cryptd_state *state = cryptd_get_state(tfm); int active; mutex_lock(&state->mutex); active = ablkcipher_tfm_in_queue(&state->queue, __crypto_ablkcipher_cast(tfm)); mutex_unlock(&state->mutex); BUG_ON(active); crypto_free_blkcipher(ctx->child); } static struct crypto_instance *cryptd_alloc_instance(struct crypto_alg *alg, struct cryptd_state *state) { struct crypto_instance *inst; struct cryptd_instance_ctx *ctx; int err; inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); if (!inst) { inst = ERR_PTR(-ENOMEM); goto out; } err = -ENAMETOOLONG; if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, "cryptd(%s)", alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) goto out_free_inst; ctx = crypto_instance_ctx(inst); err = crypto_init_spawn(&ctx->spawn, alg, inst, CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC); if (err) goto out_free_inst; ctx->state = state; memcpy(inst->alg.cra_name, alg->cra_name, CRYPTO_MAX_ALG_NAME); inst->alg.cra_priority = alg->cra_priority + 50; inst->alg.cra_blocksize = alg->cra_blocksize; inst->alg.cra_alignmask = alg->cra_alignmask; out: return inst; out_free_inst: kfree(inst); inst = ERR_PTR(err); goto out; } static struct crypto_instance *cryptd_alloc_blkcipher( struct rtattr **tb, struct cryptd_state *state) { struct crypto_instance *inst; struct crypto_alg *alg; alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_BLKCIPHER, CRYPTO_ALG_TYPE_MASK); if (IS_ERR(alg)) return ERR_CAST(alg); inst = cryptd_alloc_instance(alg, state); if (IS_ERR(inst)) goto out_put_alg; inst->alg.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC; inst->alg.cra_type = &crypto_ablkcipher_type; inst->alg.cra_ablkcipher.ivsize = alg->cra_blkcipher.ivsize; inst->alg.cra_ablkcipher.min_keysize = alg->cra_blkcipher.min_keysize; inst->alg.cra_ablkcipher.max_keysize = alg->cra_blkcipher.max_keysize; inst->alg.cra_ablkcipher.geniv = alg->cra_blkcipher.geniv; inst->alg.cra_ctxsize = sizeof(struct cryptd_blkcipher_ctx); inst->alg.cra_init = cryptd_blkcipher_init_tfm; inst->alg.cra_exit = cryptd_blkcipher_exit_tfm; inst->alg.cra_ablkcipher.setkey = cryptd_blkcipher_setkey; inst->alg.cra_ablkcipher.encrypt = cryptd_blkcipher_encrypt_enqueue; inst->alg.cra_ablkcipher.decrypt = cryptd_blkcipher_decrypt_enqueue; out_put_alg: crypto_mod_put(alg); return inst; } static struct cryptd_state state; static struct crypto_instance *cryptd_alloc(struct rtattr **tb) { struct crypto_attr_type *algt; algt = crypto_get_attr_type(tb); if (IS_ERR(algt)) return ERR_CAST(algt); switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) { case CRYPTO_ALG_TYPE_BLKCIPHER: return cryptd_alloc_blkcipher(tb, &state); } return ERR_PTR(-EINVAL); } static void cryptd_free(struct crypto_instance *inst) { struct cryptd_instance_ctx *ctx = crypto_instance_ctx(inst); crypto_drop_spawn(&ctx->spawn); kfree(inst); } static struct crypto_template cryptd_tmpl = { .name = "cryptd", .alloc = cryptd_alloc, .free = cryptd_free, .module = THIS_MODULE, }; static inline int cryptd_create_thread(struct cryptd_state *state, int (*fn)(void *data), const char *name) { spin_lock_init(&state->lock); mutex_init(&state->mutex); crypto_init_queue(&state->queue, CRYPTD_MAX_QLEN); state->task = kthread_run(fn, state, name); if (IS_ERR(state->task)) return PTR_ERR(state->task); return 0; } static inline void cryptd_stop_thread(struct cryptd_state *state) { BUG_ON(state->queue.qlen); kthread_stop(state->task); } static int cryptd_thread(void *data) { struct cryptd_state *state = data; int stop; current->flags |= PF_NOFREEZE; do { struct crypto_async_request *req, *backlog; mutex_lock(&state->mutex); __set_current_state(TASK_INTERRUPTIBLE); spin_lock_bh(&state->lock); backlog = crypto_get_backlog(&state->queue); req = crypto_dequeue_request(&state->queue); spin_unlock_bh(&state->lock); stop = kthread_should_stop(); if (stop || req) { __set_current_state(TASK_RUNNING); if (req) { if (backlog) backlog->complete(backlog, -EINPROGRESS); req->complete(req, 0); } } mutex_unlock(&state->mutex); schedule(); } while (!stop); return 0; } static int __init cryptd_init(void) { int err; err = cryptd_create_thread(&state, cryptd_thread, "cryptd"); if (err) return err; err = crypto_register_template(&cryptd_tmpl); if (err) kthread_stop(state.task); return err; } static void __exit cryptd_exit(void) { cryptd_stop_thread(&state); crypto_unregister_template(&cryptd_tmpl); } module_init(cryptd_init); module_exit(cryptd_exit); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Software async crypto daemon");