54 static void xprt_free_allocation(struct rpc_rqst *req)  in xprt_free_allocation()  argument
58 	dprintk("RPC:        free allocations for req= %p\n", req);  in xprt_free_allocation()
59 	WARN_ON_ONCE(test_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state));  in xprt_free_allocation()
60 	xbufp = &req->rq_rcv_buf;  in xprt_free_allocation()
62 	xbufp = &req->rq_snd_buf;  in xprt_free_allocation()
64 	kfree(req);  in xprt_free_allocation()
81 	struct rpc_rqst *req;  in xprt_alloc_bc_req()  local
84 	req = kzalloc(sizeof(*req), gfp_flags);  in xprt_alloc_bc_req()
85 	if (req == NULL)  in xprt_alloc_bc_req()
88 	req->rq_xprt = xprt;  in xprt_alloc_bc_req()
89 	INIT_LIST_HEAD(&req->rq_bc_list);  in xprt_alloc_bc_req()
92 	if (xprt_alloc_xdr_buf(&req->rq_rcv_buf, gfp_flags) < 0) {  in xprt_alloc_bc_req()
96 	req->rq_rcv_buf.len = PAGE_SIZE;  in xprt_alloc_bc_req()
99 	if (xprt_alloc_xdr_buf(&req->rq_snd_buf, gfp_flags) < 0) {  in xprt_alloc_bc_req()
103 	return req;  in xprt_alloc_bc_req()
105 	xprt_free_allocation(req);  in xprt_alloc_bc_req()
137 	struct rpc_rqst *req;  in xprt_setup_bc()  local
157 		req = xprt_alloc_bc_req(xprt, GFP_KERNEL);  in xprt_setup_bc()
158 		if (req == NULL) {  in xprt_setup_bc()
164 		dprintk("RPC:       adding req= %p\n", req);  in xprt_setup_bc()
165 		list_add(&req->rq_bc_pa_list, &tmp_list);  in xprt_setup_bc()
186 		req = list_first_entry(&tmp_list,  in xprt_setup_bc()
189 		list_del(&req->rq_bc_pa_list);  in xprt_setup_bc()
190 		xprt_free_allocation(req);  in xprt_setup_bc()
215 	struct rpc_rqst *req = NULL, *tmp = NULL;  in xprt_destroy_bc()  local
224 	list_for_each_entry_safe(req, tmp, &xprt->bc_pa_list, rq_bc_pa_list) {  in xprt_destroy_bc()
225 		dprintk("RPC:        req=%p\n", req);  in xprt_destroy_bc()
226 		list_del(&req->rq_bc_pa_list);  in xprt_destroy_bc()
227 		xprt_free_allocation(req);  in xprt_destroy_bc()
243 	struct rpc_rqst *req = NULL;  in xprt_get_bc_request()  local
255 	req = list_first_entry(&xprt->bc_pa_list, struct rpc_rqst,  in xprt_get_bc_request()
257 	req->rq_reply_bytes_recvd = 0;  in xprt_get_bc_request()
258 	memcpy(&req->rq_private_buf, &req->rq_rcv_buf,  in xprt_get_bc_request()
259 			sizeof(req->rq_private_buf));  in xprt_get_bc_request()
260 	req->rq_xid = xid;  in xprt_get_bc_request()
261 	req->rq_connect_cookie = xprt->connect_cookie;  in xprt_get_bc_request()
262 	dprintk("RPC:       backchannel req=%p\n", req);  in xprt_get_bc_request()
264 	return req;  in xprt_get_bc_request()
271 void xprt_free_bc_request(struct rpc_rqst *req)  in xprt_free_bc_request()  argument
273 	struct rpc_xprt *xprt = req->rq_xprt;  in xprt_free_bc_request()
275 	xprt->ops->bc_free_rqst(req);  in xprt_free_bc_request()
278 void xprt_free_bc_rqst(struct rpc_rqst *req)  in xprt_free_bc_rqst()  argument
280 	struct rpc_xprt *xprt = req->rq_xprt;  in xprt_free_bc_rqst()
282 	dprintk("RPC:       free backchannel req=%p\n", req);  in xprt_free_bc_rqst()
284 	req->rq_connect_cookie = xprt->connect_cookie - 1;  in xprt_free_bc_rqst()
286 	clear_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state);  in xprt_free_bc_rqst()
295 		list_add_tail(&req->rq_bc_pa_list, &xprt->bc_pa_list);  in xprt_free_bc_rqst()
298 		req = NULL;  in xprt_free_bc_rqst()
301 	if (req != NULL) {  in xprt_free_bc_rqst()
308 		dprintk("RPC:       Last session removed req=%p\n", req);  in xprt_free_bc_rqst()
309 		xprt_free_allocation(req);  in xprt_free_bc_rqst()
327 	struct rpc_rqst *req, *new = NULL;  in xprt_lookup_bc_request()  local
331 		list_for_each_entry(req, &xprt->bc_pa_list, rq_bc_pa_list) {  in xprt_lookup_bc_request()
332 			if (req->rq_connect_cookie != xprt->connect_cookie)  in xprt_lookup_bc_request()
334 			if (req->rq_xid == xid)  in xprt_lookup_bc_request()
337 		req = xprt_get_bc_request(xprt, xid, new);  in xprt_lookup_bc_request()
341 			if (req != new)  in xprt_lookup_bc_request()
344 		} else if (req)  in xprt_lookup_bc_request()
348 	return req;  in xprt_lookup_bc_request()
357 void xprt_complete_bc_request(struct rpc_rqst *req, uint32_t copied)  in xprt_complete_bc_request()  argument
359 	struct rpc_xprt *xprt = req->rq_xprt;  in xprt_complete_bc_request()
363 	list_del(&req->rq_bc_pa_list);  in xprt_complete_bc_request()
367 	req->rq_private_buf.len = copied;  in xprt_complete_bc_request()
368 	set_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state);  in xprt_complete_bc_request()
373 	list_add(&req->rq_bc_list, &bc_serv->sv_cb_list);  in xprt_complete_bc_request()