1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19
20 #include "ble_hs_priv.h"
21
ble_mqueue_init(struct ble_mqueue * mq,ble_npl_event_fn * ev_fn,void * ev_arg)22 int ble_mqueue_init(struct ble_mqueue *mq, ble_npl_event_fn *ev_fn, void *ev_arg)
23 {
24 STAILQ_INIT(&mq->head);
25 ble_npl_event_init(&mq->ev, ev_fn, ev_arg);
26 return (0);
27 }
28
ble_mqueue_get(struct ble_mqueue * mq)29 struct os_mbuf *ble_mqueue_get(struct ble_mqueue *mq)
30 {
31 struct os_mbuf_pkthdr *mp;
32 struct os_mbuf *om;
33 os_sr_t sr;
34 OS_ENTER_CRITICAL(sr);
35 mp = STAILQ_FIRST(&mq->head);
36 if (mp) {
37 STAILQ_REMOVE_HEAD(&mq->head, omp_next);
38 }
39
40 OS_EXIT_CRITICAL(sr);
41
42 if (mp) {
43 om = OS_MBUF_PKTHDR_TO_MBUF(mp);
44 } else {
45 om = NULL;
46 }
47
48 return (om);
49 }
50
ble_mqueue_put(struct ble_mqueue * mq,struct ble_npl_eventq * evq,struct os_mbuf * om)51 int ble_mqueue_put(struct ble_mqueue *mq, struct ble_npl_eventq *evq, struct os_mbuf *om)
52 {
53 struct os_mbuf_pkthdr *mp;
54 os_sr_t sr;
55 int rc;
56
57 /* Can only place the head of a chained mbuf on the queue. */
58 if (!OS_MBUF_IS_PKTHDR(om)) {
59 rc = OS_EINVAL;
60 goto err;
61 }
62
63 mp = OS_MBUF_PKTHDR(om);
64 OS_ENTER_CRITICAL(sr);
65 STAILQ_INSERT_TAIL(&mq->head, mp, omp_next);
66 OS_EXIT_CRITICAL(sr);
67
68 /* Only post an event to the queue if its specified */
69 if (evq) {
70 ble_npl_eventq_put(evq, &mq->ev);
71 }
72
73 return (0);
74 err:
75 return (rc);
76 }