120 static int scomp_acomp_comp_decomp(struct acomp_req *req, int dir)  in scomp_acomp_comp_decomp()  argument
122 	struct crypto_acomp *tfm = crypto_acomp_reqtfm(req);  in scomp_acomp_comp_decomp()
125 	void **ctx = acomp_request_ctx(req);  in scomp_acomp_comp_decomp()
130 	if (!req->src || !req->slen || req->slen > SCOMP_SCRATCH_SIZE)  in scomp_acomp_comp_decomp()
133 	if (req->dst && !req->dlen)  in scomp_acomp_comp_decomp()
136 	if (!req->dlen || req->dlen > SCOMP_SCRATCH_SIZE)  in scomp_acomp_comp_decomp()
137 		req->dlen = SCOMP_SCRATCH_SIZE;  in scomp_acomp_comp_decomp()
139 	dlen = req->dlen;  in scomp_acomp_comp_decomp()
144 	scatterwalk_map_and_copy(scratch->src, req->src, 0, req->slen, 0);  in scomp_acomp_comp_decomp()
146 		ret = crypto_scomp_compress(scomp, scratch->src, req->slen,  in scomp_acomp_comp_decomp()
147 					    scratch->dst, &req->dlen, *ctx);  in scomp_acomp_comp_decomp()
149 		ret = crypto_scomp_decompress(scomp, scratch->src, req->slen,  in scomp_acomp_comp_decomp()
150 					      scratch->dst, &req->dlen, *ctx);  in scomp_acomp_comp_decomp()
152 		if (!req->dst) {  in scomp_acomp_comp_decomp()
153 			req->dst = sgl_alloc(req->dlen, GFP_ATOMIC, NULL);  in scomp_acomp_comp_decomp()
154 			if (!req->dst) {  in scomp_acomp_comp_decomp()
158 		} else if (req->dlen > dlen) {  in scomp_acomp_comp_decomp()
162 		scatterwalk_map_and_copy(scratch->dst, req->dst, 0, req->dlen,  in scomp_acomp_comp_decomp()
170 static int scomp_acomp_compress(struct acomp_req *req)  in scomp_acomp_compress()  argument
172 	return scomp_acomp_comp_decomp(req, 1);  in scomp_acomp_compress()
175 static int scomp_acomp_decompress(struct acomp_req *req)  in scomp_acomp_decompress()  argument
177 	return scomp_acomp_comp_decomp(req, 0);  in scomp_acomp_decompress()
219 struct acomp_req *crypto_acomp_scomp_alloc_ctx(struct acomp_req *req)  in crypto_acomp_scomp_alloc_ctx()  argument
221 	struct crypto_acomp *acomp = crypto_acomp_reqtfm(req);  in crypto_acomp_scomp_alloc_ctx()
229 		kfree(req);  in crypto_acomp_scomp_alloc_ctx()
233 	*req->__ctx = ctx;  in crypto_acomp_scomp_alloc_ctx()
235 	return req;  in crypto_acomp_scomp_alloc_ctx()
238 void crypto_acomp_scomp_free_ctx(struct acomp_req *req)  in crypto_acomp_scomp_free_ctx()  argument
240 	struct crypto_acomp *acomp = crypto_acomp_reqtfm(req);  in crypto_acomp_scomp_free_ctx()
244 	void *ctx = *req->__ctx;  in crypto_acomp_scomp_free_ctx()