algif_aead.c (8e1fa89aa8bc2870009b4486644e4a58f2e2a4f5) algif_aead.c (7d2c3f54e6f646887d019faa45f35d6fe9fe82ce)
1/*
2 * algif_aead: User-space interface for AEAD algorithms
3 *
4 * Copyright (C) 2014, Stephan Mueller <smueller@chronox.de>
5 *
6 * This file provides the user-space API for AEAD ciphers.
7 *
8 * This program is free software; you can redistribute it and/or modify it

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278 /* Initialize the crypto operation */
279 aead_request_set_crypt(&areq->cra_u.aead_req, rsgl_src,
280 areq->first_rsgl.sgl.sg, used, ctx->iv);
281 aead_request_set_ad(&areq->cra_u.aead_req, ctx->aead_assoclen);
282 aead_request_set_tfm(&areq->cra_u.aead_req, tfm);
283
284 if (msg->msg_iocb && !is_sync_kiocb(msg->msg_iocb)) {
285 /* AIO operation */
1/*
2 * algif_aead: User-space interface for AEAD algorithms
3 *
4 * Copyright (C) 2014, Stephan Mueller <smueller@chronox.de>
5 *
6 * This file provides the user-space API for AEAD ciphers.
7 *
8 * This program is free software; you can redistribute it and/or modify it

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278 /* Initialize the crypto operation */
279 aead_request_set_crypt(&areq->cra_u.aead_req, rsgl_src,
280 areq->first_rsgl.sgl.sg, used, ctx->iv);
281 aead_request_set_ad(&areq->cra_u.aead_req, ctx->aead_assoclen);
282 aead_request_set_tfm(&areq->cra_u.aead_req, tfm);
283
284 if (msg->msg_iocb && !is_sync_kiocb(msg->msg_iocb)) {
285 /* AIO operation */
286 sock_hold(sk);
286 areq->iocb = msg->msg_iocb;
287 aead_request_set_callback(&areq->cra_u.aead_req,
288 CRYPTO_TFM_REQ_MAY_BACKLOG,
289 af_alg_async_cb, areq);
290 err = ctx->enc ? crypto_aead_encrypt(&areq->cra_u.aead_req) :
291 crypto_aead_decrypt(&areq->cra_u.aead_req);
287 areq->iocb = msg->msg_iocb;
288 aead_request_set_callback(&areq->cra_u.aead_req,
289 CRYPTO_TFM_REQ_MAY_BACKLOG,
290 af_alg_async_cb, areq);
291 err = ctx->enc ? crypto_aead_encrypt(&areq->cra_u.aead_req) :
292 crypto_aead_decrypt(&areq->cra_u.aead_req);
293
294 /* AIO operation in progress */
295 if (err == -EINPROGRESS || err == -EBUSY) {
296 /* Remember output size that will be generated. */
297 areq->outlen = outlen;
298
299 return -EIOCBQUEUED;
300 }
301
302 sock_put(sk);
292 } else {
293 /* Synchronous operation */
294 aead_request_set_callback(&areq->cra_u.aead_req,
295 CRYPTO_TFM_REQ_MAY_BACKLOG,
296 crypto_req_done, &ctx->wait);
297 err = crypto_wait_req(ctx->enc ?
298 crypto_aead_encrypt(&areq->cra_u.aead_req) :
299 crypto_aead_decrypt(&areq->cra_u.aead_req),
300 &ctx->wait);
301 }
302
303 } else {
304 /* Synchronous operation */
305 aead_request_set_callback(&areq->cra_u.aead_req,
306 CRYPTO_TFM_REQ_MAY_BACKLOG,
307 crypto_req_done, &ctx->wait);
308 err = crypto_wait_req(ctx->enc ?
309 crypto_aead_encrypt(&areq->cra_u.aead_req) :
310 crypto_aead_decrypt(&areq->cra_u.aead_req),
311 &ctx->wait);
312 }
313
303 /* AIO operation in progress */
304 if (err == -EINPROGRESS) {
305 sock_hold(sk);
306
314
307 /* Remember output size that will be generated. */
308 areq->outlen = outlen;
309
310 return -EIOCBQUEUED;
311 }
312
313free:
315free:
314 af_alg_free_areq_sgls(areq);
315 sock_kfree_s(sk, areq, areq->areqlen);
316 af_alg_free_resources(areq);
316
317 return err ? err : outlen;
318}
319
320static int aead_recvmsg(struct socket *sock, struct msghdr *msg,
321 size_t ignored, int flags)
322{
323 struct sock *sk = sock->sk;

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318 return err ? err : outlen;
319}
320
321static int aead_recvmsg(struct socket *sock, struct msghdr *msg,
322 size_t ignored, int flags)
323{
324 struct sock *sk = sock->sk;

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