20 	struct skcipher_walk walk;  in aes_ctr_encrypt_fallback()  local
24 	err = skcipher_walk_virt(&walk, req, true);  in aes_ctr_encrypt_fallback()
26 	while (walk.nbytes > 0) {  in aes_ctr_encrypt_fallback()
27 		u8 *dst = walk.dst.virt.addr;  in aes_ctr_encrypt_fallback()
28 		u8 *src = walk.src.virt.addr;  in aes_ctr_encrypt_fallback()
29 		int nbytes = walk.nbytes;  in aes_ctr_encrypt_fallback()
32 		if (nbytes < walk.total) {  in aes_ctr_encrypt_fallback()
34 			tail = walk.nbytes % AES_BLOCK_SIZE;  in aes_ctr_encrypt_fallback()
40 			__aes_arm64_encrypt(ctx->key_enc, buf, walk.iv,  in aes_ctr_encrypt_fallback()
43 			crypto_inc(walk.iv, AES_BLOCK_SIZE);  in aes_ctr_encrypt_fallback()
50 		err = skcipher_walk_done(&walk, tail);  in aes_ctr_encrypt_fallback()