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()
92 	struct rpc_rqst *req;  in xprt_alloc_bc_req()  local
95 	req = kzalloc(sizeof(*req), gfp_flags);  in xprt_alloc_bc_req()
96 	if (req == NULL)  in xprt_alloc_bc_req()
99 	req->rq_xprt = xprt;  in xprt_alloc_bc_req()
100 	INIT_LIST_HEAD(&req->rq_bc_list);  in xprt_alloc_bc_req()
103 	if (xprt_alloc_xdr_buf(&req->rq_rcv_buf, gfp_flags) < 0) {  in xprt_alloc_bc_req()
107 	req->rq_rcv_buf.len = PAGE_SIZE;  in xprt_alloc_bc_req()
110 	if (xprt_alloc_xdr_buf(&req->rq_snd_buf, gfp_flags) < 0) {  in xprt_alloc_bc_req()
114 	return req;  in xprt_alloc_bc_req()
116 	xprt_free_allocation(req);  in xprt_alloc_bc_req()
148 	struct rpc_rqst *req;  in xprt_setup_bc()  local
168 		req = xprt_alloc_bc_req(xprt, GFP_KERNEL);  in xprt_setup_bc()
169 		if (req == NULL) {  in xprt_setup_bc()
175 		dprintk("RPC:       adding req= %p\n", req);  in xprt_setup_bc()
176 		list_add(&req->rq_bc_pa_list, &tmp_list);  in xprt_setup_bc()
197 		req = list_first_entry(&tmp_list,  in xprt_setup_bc()
200 		list_del(&req->rq_bc_pa_list);  in xprt_setup_bc()
201 		xprt_free_allocation(req);  in xprt_setup_bc()
226 	struct rpc_rqst *req = NULL, *tmp = NULL;  in xprt_destroy_bc()  local
235 	list_for_each_entry_safe(req, tmp, &xprt->bc_pa_list, rq_bc_pa_list) {  in xprt_destroy_bc()
236 		dprintk("RPC:        req=%p\n", req);  in xprt_destroy_bc()
237 		list_del(&req->rq_bc_pa_list);  in xprt_destroy_bc()
238 		xprt_free_allocation(req);  in xprt_destroy_bc()
254 	struct rpc_rqst *req = NULL;  in xprt_get_bc_request()  local
266 	req = list_first_entry(&xprt->bc_pa_list, struct rpc_rqst,  in xprt_get_bc_request()
268 	req->rq_reply_bytes_recvd = 0;  in xprt_get_bc_request()
269 	memcpy(&req->rq_private_buf, &req->rq_rcv_buf,  in xprt_get_bc_request()
270 			sizeof(req->rq_private_buf));  in xprt_get_bc_request()
271 	req->rq_xid = xid;  in xprt_get_bc_request()
272 	req->rq_connect_cookie = xprt->connect_cookie;  in xprt_get_bc_request()
273 	dprintk("RPC:       backchannel req=%p\n", req);  in xprt_get_bc_request()
275 	return req;  in xprt_get_bc_request()
282 void xprt_free_bc_request(struct rpc_rqst *req)  in xprt_free_bc_request()  argument
284 	struct rpc_xprt *xprt = req->rq_xprt;  in xprt_free_bc_request()
286 	xprt->ops->bc_free_rqst(req);  in xprt_free_bc_request()
289 void xprt_free_bc_rqst(struct rpc_rqst *req)  in xprt_free_bc_rqst()  argument
291 	struct rpc_xprt *xprt = req->rq_xprt;  in xprt_free_bc_rqst()
293 	dprintk("RPC:       free backchannel req=%p\n", req);  in xprt_free_bc_rqst()
295 	req->rq_connect_cookie = xprt->connect_cookie - 1;  in xprt_free_bc_rqst()
297 	clear_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state);  in xprt_free_bc_rqst()
306 		xprt_bc_reinit_xdr_buf(&req->rq_snd_buf);  in xprt_free_bc_rqst()
307 		xprt_bc_reinit_xdr_buf(&req->rq_rcv_buf);  in xprt_free_bc_rqst()
308 		req->rq_rcv_buf.len = PAGE_SIZE;  in xprt_free_bc_rqst()
309 		list_add_tail(&req->rq_bc_pa_list, &xprt->bc_pa_list);  in xprt_free_bc_rqst()
312 		req = NULL;  in xprt_free_bc_rqst()
315 	if (req != NULL) {  in xprt_free_bc_rqst()
322 		dprintk("RPC:       Last session removed req=%p\n", req);  in xprt_free_bc_rqst()
323 		xprt_free_allocation(req);  in xprt_free_bc_rqst()
341 	struct rpc_rqst *req, *new = NULL;  in xprt_lookup_bc_request()  local
345 		list_for_each_entry(req, &xprt->bc_pa_list, rq_bc_pa_list) {  in xprt_lookup_bc_request()
346 			if (req->rq_connect_cookie != xprt->connect_cookie)  in xprt_lookup_bc_request()
348 			if (req->rq_xid == xid)  in xprt_lookup_bc_request()
351 		req = xprt_get_bc_request(xprt, xid, new);  in xprt_lookup_bc_request()
355 			if (req != new)  in xprt_lookup_bc_request()
358 		} else if (req)  in xprt_lookup_bc_request()
362 	return req;  in xprt_lookup_bc_request()
371 void xprt_complete_bc_request(struct rpc_rqst *req, uint32_t copied)  in xprt_complete_bc_request()  argument
373 	struct rpc_xprt *xprt = req->rq_xprt;  in xprt_complete_bc_request()
377 	list_del(&req->rq_bc_pa_list);  in xprt_complete_bc_request()
381 	req->rq_private_buf.len = copied;  in xprt_complete_bc_request()
382 	set_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state);  in xprt_complete_bc_request()
387 	list_add(&req->rq_bc_list, &bc_serv->sv_cb_list);  in xprt_complete_bc_request()