crypto: seqiv - Remove seqniv
Now that IPsec no longer uses seqniv we can remove it.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/seqiv.c b/crypto/seqiv.c
index 45d0563..debf8d3 100644
--- a/crypto/seqiv.c
+++ b/crypto/seqiv.c
@@ -26,11 +26,6 @@
#include <linux/spinlock.h>
#include <linux/string.h>
-struct seqniv_request_ctx {
- struct scatterlist dst[2];
- struct aead_request subreq;
-};
-
struct seqiv_ctx {
spinlock_t lock;
u8 salt[] __attribute__ ((aligned(__alignof__(u32))));
@@ -124,50 +119,6 @@
aead_request_complete(req, err);
}
-static void seqniv_aead_encrypt_complete2(struct aead_request *req, int err)
-{
- unsigned int ivsize = 8;
- u8 data[20];
-
- if (err == -EINPROGRESS)
- return;
-
- /* Swap IV and ESP header back to correct order. */
- scatterwalk_map_and_copy(data, req->dst, 0, req->assoclen + ivsize, 0);
- scatterwalk_map_and_copy(data + ivsize, req->dst, 0, req->assoclen, 1);
- scatterwalk_map_and_copy(data, req->dst, req->assoclen, ivsize, 1);
-}
-
-static void seqniv_aead_encrypt_complete(struct crypto_async_request *base,
- int err)
-{
- struct aead_request *req = base->data;
-
- seqniv_aead_encrypt_complete2(req, err);
- aead_request_complete(req, err);
-}
-
-static void seqniv_aead_decrypt_complete2(struct aead_request *req, int err)
-{
- u8 data[4];
-
- if (err == -EINPROGRESS)
- return;
-
- /* Move ESP header back to correct location. */
- scatterwalk_map_and_copy(data, req->dst, 16, req->assoclen - 8, 0);
- scatterwalk_map_and_copy(data, req->dst, 8, req->assoclen - 8, 1);
-}
-
-static void seqniv_aead_decrypt_complete(struct crypto_async_request *base,
- int err)
-{
- struct aead_request *req = base->data;
-
- seqniv_aead_decrypt_complete2(req, err);
- aead_request_complete(req, err);
-}
-
static void seqiv_geniv(struct seqiv_ctx *ctx, u8 *info, u64 seq,
unsigned int ivsize)
{
@@ -273,62 +224,6 @@
return err;
}
-static int seqniv_aead_encrypt(struct aead_request *req)
-{
- struct crypto_aead *geniv = crypto_aead_reqtfm(req);
- struct seqiv_aead_ctx *ctx = crypto_aead_ctx(geniv);
- struct seqniv_request_ctx *rctx = aead_request_ctx(req);
- struct aead_request *subreq = &rctx->subreq;
- struct scatterlist *dst;
- crypto_completion_t compl;
- void *data;
- unsigned int ivsize = 8;
- u8 buf[20] __attribute__ ((aligned(__alignof__(u32))));
- int err;
-
- if (req->cryptlen < ivsize)
- return -EINVAL;
-
- /* ESP AD is at most 12 bytes (ESN). */
- if (req->assoclen > 12)
- return -EINVAL;
-
- aead_request_set_tfm(subreq, ctx->geniv.child);
-
- compl = seqniv_aead_encrypt_complete;
- data = req;
-
- if (req->src != req->dst) {
- struct blkcipher_desc desc = {
- .tfm = ctx->null,
- };
-
- err = crypto_blkcipher_encrypt(&desc, req->dst, req->src,
- req->assoclen + req->cryptlen);
- if (err)
- return err;
- }
-
- dst = scatterwalk_ffwd(rctx->dst, req->dst, ivsize);
-
- aead_request_set_callback(subreq, req->base.flags, compl, data);
- aead_request_set_crypt(subreq, dst, dst,
- req->cryptlen - ivsize, req->iv);
- aead_request_set_ad(subreq, req->assoclen);
-
- memcpy(buf, req->iv, ivsize);
- crypto_xor(buf, ctx->salt, ivsize);
- memcpy(req->iv, buf, ivsize);
-
- /* Swap order of IV and ESP AD for ICV generation. */
- scatterwalk_map_and_copy(buf + ivsize, req->dst, 0, req->assoclen, 0);
- scatterwalk_map_and_copy(buf, req->dst, 0, req->assoclen + ivsize, 1);
-
- err = crypto_aead_encrypt(subreq);
- seqniv_aead_encrypt_complete2(req, err);
- return err;
-}
-
static int seqiv_aead_encrypt(struct aead_request *req)
{
struct crypto_aead *geniv = crypto_aead_reqtfm(req);
@@ -387,63 +282,6 @@
return err;
}
-static int seqniv_aead_decrypt(struct aead_request *req)
-{
- struct crypto_aead *geniv = crypto_aead_reqtfm(req);
- struct seqiv_aead_ctx *ctx = crypto_aead_ctx(geniv);
- struct seqniv_request_ctx *rctx = aead_request_ctx(req);
- struct aead_request *subreq = &rctx->subreq;
- struct scatterlist *dst;
- crypto_completion_t compl;
- void *data;
- unsigned int ivsize = 8;
- u8 buf[20];
- int err;
-
- if (req->cryptlen < ivsize + crypto_aead_authsize(geniv))
- return -EINVAL;
-
- aead_request_set_tfm(subreq, ctx->geniv.child);
-
- compl = req->base.complete;
- data = req->base.data;
-
- if (req->assoclen > 12)
- return -EINVAL;
- else if (req->assoclen > 8) {
- compl = seqniv_aead_decrypt_complete;
- data = req;
- }
-
- if (req->src != req->dst) {
- struct blkcipher_desc desc = {
- .tfm = ctx->null,
- };
-
- err = crypto_blkcipher_encrypt(&desc, req->dst, req->src,
- req->assoclen + req->cryptlen);
- if (err)
- return err;
- }
-
- /* Move ESP AD forward for ICV generation. */
- scatterwalk_map_and_copy(buf, req->dst, 0, req->assoclen + ivsize, 0);
- memcpy(req->iv, buf + req->assoclen, ivsize);
- scatterwalk_map_and_copy(buf, req->dst, ivsize, req->assoclen, 1);
-
- dst = scatterwalk_ffwd(rctx->dst, req->dst, ivsize);
-
- aead_request_set_callback(subreq, req->base.flags, compl, data);
- aead_request_set_crypt(subreq, dst, dst,
- req->cryptlen - ivsize, req->iv);
- aead_request_set_ad(subreq, req->assoclen);
-
- err = crypto_aead_decrypt(subreq);
- if (req->assoclen > 8)
- seqniv_aead_decrypt_complete2(req, err);
- return err;
-}
-
static int seqiv_aead_decrypt(struct aead_request *req)
{
struct crypto_aead *geniv = crypto_aead_reqtfm(req);
@@ -558,11 +396,6 @@
return seqiv_aead_init_common(tfm, sizeof(struct aead_request));
}
-static int seqniv_aead_init(struct crypto_aead *tfm)
-{
- return seqiv_aead_init_common(tfm, sizeof(struct seqniv_request_ctx));
-}
-
static void seqiv_aead_exit(struct crypto_aead *tfm)
{
struct seqiv_aead_ctx *ctx = crypto_aead_ctx(tfm);
@@ -699,58 +532,6 @@
return err;
}
-static int seqniv_create(struct crypto_template *tmpl, struct rtattr **tb)
-{
- struct aead_instance *inst;
- struct crypto_aead_spawn *spawn;
- struct aead_alg *alg;
- int err;
-
- inst = aead_geniv_alloc(tmpl, tb, 0, 0);
- err = PTR_ERR(inst);
- if (IS_ERR(inst))
- goto out;
-
- spawn = aead_instance_ctx(inst);
- alg = crypto_spawn_aead_alg(spawn);
-
- if (alg->base.cra_aead.encrypt)
- goto done;
-
- err = -EINVAL;
- if (inst->alg.ivsize != sizeof(u64))
- goto free_inst;
-
- inst->alg.encrypt = seqniv_aead_encrypt;
- inst->alg.decrypt = seqniv_aead_decrypt;
-
- inst->alg.init = seqniv_aead_init;
- inst->alg.exit = seqiv_aead_exit;
-
- if ((alg->base.cra_flags & CRYPTO_ALG_AEAD_NEW)) {
- inst->alg.encrypt = seqiv_aead_encrypt;
- inst->alg.decrypt = seqiv_aead_decrypt;
-
- inst->alg.init = seqiv_aead_init;
- }
-
- inst->alg.base.cra_alignmask |= __alignof__(u32) - 1;
- inst->alg.base.cra_ctxsize = sizeof(struct seqiv_aead_ctx);
- inst->alg.base.cra_ctxsize += inst->alg.ivsize;
-
-done:
- err = aead_register_instance(tmpl, inst);
- if (err)
- goto free_inst;
-
-out:
- return err;
-
-free_inst:
- aead_geniv_free(inst);
- goto out;
-}
-
static void seqiv_free(struct crypto_instance *inst)
{
if ((inst->alg.cra_flags ^ CRYPTO_ALG_TYPE_AEAD) & CRYPTO_ALG_TYPE_MASK)
@@ -766,36 +547,13 @@
.module = THIS_MODULE,
};
-static struct crypto_template seqniv_tmpl = {
- .name = "seqniv",
- .create = seqniv_create,
- .free = seqiv_free,
- .module = THIS_MODULE,
-};
-
static int __init seqiv_module_init(void)
{
- int err;
-
- err = crypto_register_template(&seqiv_tmpl);
- if (err)
- goto out;
-
- err = crypto_register_template(&seqniv_tmpl);
- if (err)
- goto out_undo_niv;
-
-out:
- return err;
-
-out_undo_niv:
- crypto_unregister_template(&seqiv_tmpl);
- goto out;
+ return crypto_register_template(&seqiv_tmpl);
}
static void __exit seqiv_module_exit(void)
{
- crypto_unregister_template(&seqniv_tmpl);
crypto_unregister_template(&seqiv_tmpl);
}
@@ -805,4 +563,3 @@
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Sequence Number IV Generator");
MODULE_ALIAS_CRYPTO("seqiv");
-MODULE_ALIAS_CRYPTO("seqniv");