80 	int bsize = crypto_blkcipher_blocksize(desc->tfm);  in cts_cbc_encrypt()  local
81 	u8 tmp[bsize], tmp2[bsize];  in cts_cbc_encrypt()
84 	int lastn = nbytes - bsize;  in cts_cbc_encrypt()
85 	u8 iv[bsize];  in cts_cbc_encrypt()
86 	u8 s[bsize * 2], d[bsize * 2];  in cts_cbc_encrypt()
98 	memcpy(iv, desc->info, bsize);  in cts_cbc_encrypt()
104 	sg_set_buf(&sgsrc[0], s, bsize);  in cts_cbc_encrypt()
105 	sg_set_buf(&sgdst[0], tmp, bsize);  in cts_cbc_encrypt()
106 	err = crypto_blkcipher_encrypt_iv(&lcldesc, sgdst, sgsrc, bsize);  in cts_cbc_encrypt()
108 	memcpy(d + bsize, tmp, lastn);  in cts_cbc_encrypt()
112 	sg_set_buf(&sgsrc[0], s + bsize, bsize);  in cts_cbc_encrypt()
113 	sg_set_buf(&sgdst[0], tmp2, bsize);  in cts_cbc_encrypt()
114 	err = crypto_blkcipher_encrypt_iv(&lcldesc, sgdst, sgsrc, bsize);  in cts_cbc_encrypt()
116 	memcpy(d, tmp2, bsize);  in cts_cbc_encrypt()
120 	memcpy(desc->info, tmp2, bsize);  in cts_cbc_encrypt()
130 	int bsize = crypto_blkcipher_blocksize(desc->tfm);  in crypto_cts_encrypt()  local
131 	int tot_blocks = (nbytes + bsize - 1) / bsize;  in crypto_cts_encrypt()
141 		err = crypto_blkcipher_encrypt_iv(&lcldesc, dst, src, bsize);  in crypto_cts_encrypt()
142 	} else if (nbytes <= bsize * 2) {  in crypto_cts_encrypt()
147 							cbc_blocks * bsize);  in crypto_cts_encrypt()
151 						cbc_blocks * bsize,  in crypto_cts_encrypt()
152 						nbytes - (cbc_blocks * bsize));  in crypto_cts_encrypt()
166 	int bsize = crypto_blkcipher_blocksize(desc->tfm);  in cts_cbc_decrypt()  local
167 	u8 tmp[bsize];  in cts_cbc_decrypt()
170 	int lastn = nbytes - bsize;  in cts_cbc_decrypt()
171 	u8 iv[bsize];  in cts_cbc_decrypt()
172 	u8 s[bsize * 2], d[bsize * 2];  in cts_cbc_decrypt()
189 	sg_set_buf(&sgsrc[0], s, bsize);  in cts_cbc_decrypt()
190 	sg_set_buf(&sgdst[0], tmp, bsize);  in cts_cbc_decrypt()
191 	err = crypto_blkcipher_decrypt_iv(&lcldesc, sgdst, sgsrc, bsize);  in cts_cbc_decrypt()
196 	memcpy(iv, s + bsize, lastn);  in cts_cbc_decrypt()
198 	crypto_xor(tmp, iv, bsize);  in cts_cbc_decrypt()
200 	memcpy(d + bsize, tmp, lastn);  in cts_cbc_decrypt()
203 	memcpy(s + bsize + lastn, tmp + lastn, bsize - lastn);  in cts_cbc_decrypt()
207 	sg_set_buf(&sgsrc[0], s + bsize, bsize);  in cts_cbc_decrypt()
208 	sg_set_buf(&sgdst[0], d, bsize);  in cts_cbc_decrypt()
209 	err = crypto_blkcipher_decrypt_iv(&lcldesc, sgdst, sgsrc, bsize);  in cts_cbc_decrypt()
212 	crypto_xor(d, desc->info, bsize);  in cts_cbc_decrypt()
216 	memcpy(desc->info, s, bsize);  in cts_cbc_decrypt()
225 	int bsize = crypto_blkcipher_blocksize(desc->tfm);  in crypto_cts_decrypt()  local
226 	int tot_blocks = (nbytes + bsize - 1) / bsize;  in crypto_cts_decrypt()
236 		err = crypto_blkcipher_decrypt_iv(&lcldesc, dst, src, bsize);  in crypto_cts_decrypt()
237 	} else if (nbytes <= bsize * 2) {  in crypto_cts_decrypt()
242 							cbc_blocks * bsize);  in crypto_cts_decrypt()
246 						cbc_blocks * bsize,  in crypto_cts_decrypt()
247 						nbytes - (cbc_blocks * bsize));  in crypto_cts_decrypt()