+static int seqiv_aead_givencrypt(struct aead_givcrypt_request *req)
+{
+ struct crypto_aead *geniv = aead_givcrypt_reqtfm(req);
+ struct seqiv_ctx *ctx = crypto_aead_ctx(geniv);
+ struct aead_request *areq = &req->areq;
+ struct aead_request *subreq = aead_givcrypt_reqctx(req);
+ crypto_completion_t complete;
+ void *data;
+ u8 *info;
+ unsigned int ivsize;
+ int err;
+
+ aead_request_set_tfm(subreq, aead_geniv_base(geniv));
+
+ complete = areq->base.complete;
+ data = areq->base.data;
+ info = areq->iv;
+
+ ivsize = crypto_aead_ivsize(geniv);
+
+ if (unlikely(!IS_ALIGNED((unsigned long)info,
+ crypto_aead_alignmask(geniv) + 1))) {
+ info = kmalloc(ivsize, areq->base.flags &
+ CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL:
+ GFP_ATOMIC);
+ if (!info)
+ return -ENOMEM;
+
+ complete = seqiv_aead_complete;
+ data = req;
+ }
+
+ aead_request_set_callback(subreq, areq->base.flags, complete, data);
+ aead_request_set_crypt(subreq, areq->src, areq->dst, areq->cryptlen,
+ info);
+ aead_request_set_assoc(subreq, areq->assoc, areq->assoclen);
+
+ seqiv_geniv(ctx, info, req->seq, ivsize);
+ memcpy(req->giv, info, ivsize);
+
+ err = crypto_aead_encrypt(subreq);
+ if (unlikely(info != areq->iv))
+ seqiv_aead_complete2(req, err);
+ return err;
+}
+