40 static void xprt_free_allocation(struct rpc_rqst *req)  in xprt_free_allocation()  argument
44 	dprintk("RPC:        free allocations for req= %p\n", req);  in xprt_free_allocation()
45 	WARN_ON_ONCE(test_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state));  in xprt_free_allocation()
46 	xbufp = &req->rq_rcv_buf;  in xprt_free_allocation()
48 	xbufp = &req->rq_snd_buf;  in xprt_free_allocation()
50 	kfree(req);  in xprt_free_allocation()
78 	struct rpc_rqst *req;  in xprt_alloc_bc_req()  local
81 	req = kzalloc(sizeof(*req), gfp_flags);  in xprt_alloc_bc_req()
82 	if (req == NULL)  in xprt_alloc_bc_req()
85 	req->rq_xprt = xprt;  in xprt_alloc_bc_req()
88 	if (xprt_alloc_xdr_buf(&req->rq_rcv_buf, gfp_flags) < 0) {  in xprt_alloc_bc_req()
92 	req->rq_rcv_buf.len = PAGE_SIZE;  in xprt_alloc_bc_req()
95 	if (xprt_alloc_xdr_buf(&req->rq_snd_buf, gfp_flags) < 0) {  in xprt_alloc_bc_req()
99 	return req;  in xprt_alloc_bc_req()
101 	xprt_free_allocation(req);  in xprt_alloc_bc_req()
133 	struct rpc_rqst *req;  in xprt_setup_bc()  local
153 		req = xprt_alloc_bc_req(xprt);  in xprt_setup_bc()
154 		if (req == NULL) {  in xprt_setup_bc()
160 		dprintk("RPC:       adding req= %p\n", req);  in xprt_setup_bc()
161 		list_add(&req->rq_bc_pa_list, &tmp_list);  in xprt_setup_bc()
182 		req = list_first_entry(&tmp_list,  in xprt_setup_bc()
185 		list_del(&req->rq_bc_pa_list);  in xprt_setup_bc()
186 		xprt_free_allocation(req);  in xprt_setup_bc()
211 	struct rpc_rqst *req = NULL, *tmp = NULL;  in xprt_destroy_bc()  local
220 	list_for_each_entry_safe(req, tmp, &xprt->bc_pa_list, rq_bc_pa_list) {  in xprt_destroy_bc()
221 		dprintk("RPC:        req=%p\n", req);  in xprt_destroy_bc()
222 		list_del(&req->rq_bc_pa_list);  in xprt_destroy_bc()
223 		xprt_free_allocation(req);  in xprt_destroy_bc()
239 	struct rpc_rqst *req = NULL;  in xprt_get_bc_request()  local
251 	req = list_first_entry(&xprt->bc_pa_list, struct rpc_rqst,  in xprt_get_bc_request()
253 	req->rq_reply_bytes_recvd = 0;  in xprt_get_bc_request()
254 	memcpy(&req->rq_private_buf, &req->rq_rcv_buf,  in xprt_get_bc_request()
255 			sizeof(req->rq_private_buf));  in xprt_get_bc_request()
256 	req->rq_xid = xid;  in xprt_get_bc_request()
257 	req->rq_connect_cookie = xprt->connect_cookie;  in xprt_get_bc_request()
258 	dprintk("RPC:       backchannel req=%p\n", req);  in xprt_get_bc_request()
260 	return req;  in xprt_get_bc_request()
267 void xprt_free_bc_request(struct rpc_rqst *req)  in xprt_free_bc_request()  argument
269 	struct rpc_xprt *xprt = req->rq_xprt;  in xprt_free_bc_request()
271 	xprt->ops->bc_free_rqst(req);  in xprt_free_bc_request()
274 void xprt_free_bc_rqst(struct rpc_rqst *req)  in xprt_free_bc_rqst()  argument
276 	struct rpc_xprt *xprt = req->rq_xprt;  in xprt_free_bc_rqst()
278 	dprintk("RPC:       free backchannel req=%p\n", req);  in xprt_free_bc_rqst()
280 	req->rq_connect_cookie = xprt->connect_cookie - 1;  in xprt_free_bc_rqst()
282 	clear_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state);  in xprt_free_bc_rqst()
291 		xprt_bc_reinit_xdr_buf(&req->rq_snd_buf);  in xprt_free_bc_rqst()
292 		xprt_bc_reinit_xdr_buf(&req->rq_rcv_buf);  in xprt_free_bc_rqst()
293 		req->rq_rcv_buf.len = PAGE_SIZE;  in xprt_free_bc_rqst()
294 		list_add_tail(&req->rq_bc_pa_list, &xprt->bc_pa_list);  in xprt_free_bc_rqst()
297 		req = NULL;  in xprt_free_bc_rqst()
300 	if (req != NULL) {  in xprt_free_bc_rqst()
307 		dprintk("RPC:       Last session removed req=%p\n", req);  in xprt_free_bc_rqst()
308 		xprt_free_allocation(req);  in xprt_free_bc_rqst()
326 	struct rpc_rqst *req, *new = NULL;  in xprt_lookup_bc_request()  local
330 		list_for_each_entry(req, &xprt->bc_pa_list, rq_bc_pa_list) {  in xprt_lookup_bc_request()
331 			if (req->rq_connect_cookie != xprt->connect_cookie)  in xprt_lookup_bc_request()
333 			if (req->rq_xid == xid)  in xprt_lookup_bc_request()
336 		req = xprt_get_bc_request(xprt, xid, new);  in xprt_lookup_bc_request()
340 			if (req != new)  in xprt_lookup_bc_request()
343 		} else if (req)  in xprt_lookup_bc_request()
347 	return req;  in xprt_lookup_bc_request()
354 void xprt_complete_bc_request(struct rpc_rqst *req, uint32_t copied)  in xprt_complete_bc_request()  argument
356 	struct rpc_xprt *xprt = req->rq_xprt;  in xprt_complete_bc_request()
360 	list_del(&req->rq_bc_pa_list);  in xprt_complete_bc_request()
364 	req->rq_private_buf.len = copied;  in xprt_complete_bc_request()
365 	set_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state);  in xprt_complete_bc_request()
369 	lwq_enqueue(&req->rq_bc_list, &bc_serv->sv_cb_list);  in xprt_complete_bc_request()