70 	struct blkcipher_walk walk;  in chacha20_simd()  local
78 	blkcipher_walk_init(&walk, dst, src, nbytes);  in chacha20_simd()
79 	err = blkcipher_walk_virt_block(desc, &walk, CHACHA20_BLOCK_SIZE);  in chacha20_simd()
82 	crypto_chacha20_init(state, crypto_blkcipher_ctx(desc->tfm), walk.iv);  in chacha20_simd()
86 	while (walk.nbytes >= CHACHA20_BLOCK_SIZE) {  in chacha20_simd()
87 		chacha20_dosimd(state, walk.dst.virt.addr, walk.src.virt.addr,  in chacha20_simd()
88 				rounddown(walk.nbytes, CHACHA20_BLOCK_SIZE));  in chacha20_simd()
89 		err = blkcipher_walk_done(desc, &walk,  in chacha20_simd()
90 					  walk.nbytes % CHACHA20_BLOCK_SIZE);  in chacha20_simd()
93 	if (walk.nbytes) {  in chacha20_simd()
94 		chacha20_dosimd(state, walk.dst.virt.addr, walk.src.virt.addr,  in chacha20_simd()
95 				walk.nbytes);  in chacha20_simd()
96 		err = blkcipher_walk_done(desc, &walk, 0);  in chacha20_simd()