blob: 48abbafe646260dec23cde37c0099a85732bde82 [file] [log] [blame]
Florin Coras99368312018-08-02 10:45:44 -07001/*
2 * Copyright (c) 2018 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this
5 * You may obtain a copy of the License at:
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include <vcl/vcl_private.h>
17
18vcl_cut_through_registration_t *
19vcl_ct_registration_lock_and_alloc (void)
20{
21 vcl_cut_through_registration_t *cr;
22 pool_get (vcm->cut_through_registrations, cr);
23 clib_spinlock_lock (&vcm->ct_registration_lock);
24 memset (cr, 0, sizeof (*cr));
25 cr->epoll_evt_conn_index = -1;
26 return cr;
27}
28
29u32
30vcl_ct_registration_index (vcl_cut_through_registration_t * ctr)
31{
32 return (ctr - vcm->cut_through_registrations);
33}
34
35void
36vcl_ct_registration_unlock (void)
37{
38 clib_spinlock_unlock (&vcm->ct_registration_lock);
39}
40
41vcl_cut_through_registration_t *
42vcl_ct_registration_get (u32 ctr_index)
43{
44 if (pool_is_free_index (vcm->cut_through_registrations, ctr_index))
45 return 0;
46 return pool_elt_at_index (vcm->cut_through_registrations, ctr_index);
47}
48
49vcl_cut_through_registration_t *
50vcl_ct_registration_lock_and_lookup (uword mq_addr)
51{
52 uword *p;
53 clib_spinlock_lock (&vcm->ct_registration_lock);
54 p = hash_get (vcm->ct_registration_by_mq, mq_addr);
55 if (!p)
56 return 0;
57 return vcl_ct_registration_get (p[0]);
58}
59
60void
61vcl_ct_registration_lookup_add (uword mq_addr, u32 ctr_index)
62{
63 hash_set (vcm->ct_registration_by_mq, mq_addr, ctr_index);
64}
65
66void
67vcl_ct_registration_lookup_del (uword mq_addr)
68{
69 hash_unset (vcm->ct_registration_by_mq, mq_addr);
70}
71
72void
73vcl_ct_registration_del (vcl_cut_through_registration_t * ctr)
74{
75 pool_put (vcm->cut_through_registrations, ctr);
76}
77
78vcl_mq_evt_conn_t *
79vcl_mq_evt_conn_alloc (void)
80{
81 vcl_mq_evt_conn_t *mqc;
82 pool_get (vcm->mq_evt_conns, mqc);
83 memset (mqc, 0, sizeof (*mqc));
84 return mqc;
85}
86
87u32
88vcl_mq_evt_conn_index (vcl_mq_evt_conn_t * mqc)
89{
90 return (mqc - vcm->mq_evt_conns);
91}
92
93vcl_mq_evt_conn_t *
94vcl_mq_evt_conn_get (u32 mq_conn_idx)
95{
96 return pool_elt_at_index (vcm->mq_evt_conns, mq_conn_idx);
97}
98
99int
100vcl_mq_epoll_add_evfd (svm_msg_q_t * mq)
101{
102 struct epoll_event e = { 0 };
103 vcl_mq_evt_conn_t *mqc;
104 u32 mqc_index;
105 int mq_fd;
106
107 mq_fd = svm_msg_q_get_consumer_eventfd (mq);
108
109 if (vcm->mqs_epfd < 0 || mq_fd == -1)
110 return -1;
111
112 mqc = vcl_mq_evt_conn_alloc ();
113 mqc_index = vcl_mq_evt_conn_index (mqc);
114 mqc->mq_fd = mq_fd;
115 mqc->mq = mq;
116
117 e.events = EPOLLIN;
118 e.data.u32 = mqc_index;
119 if (epoll_ctl (vcm->mqs_epfd, EPOLL_CTL_ADD, mq_fd, &e) < 0)
120 {
121 clib_warning ("failed to add mq eventfd to mq epoll fd");
122 return -1;
123 }
124
125 return mqc_index;
126}
127
128int
129vcl_mq_epoll_del_evfd (u32 mqc_index)
130{
131 vcl_mq_evt_conn_t *mqc;
132
133 if (vcm->mqs_epfd || mqc_index == ~0)
134 return -1;
135
136 mqc = vcl_mq_evt_conn_get (mqc_index);
137 if (epoll_ctl (vcm->mqs_epfd, EPOLL_CTL_DEL, mqc->mq_fd, 0) < 0)
138 {
139 clib_warning ("failed to del mq eventfd to mq epoll fd");
140 return -1;
141 }
142 return 0;
143}
144
145/*
146 * fd.io coding-style-patch-verification: ON
147 *
148 * Local Variables:
149 * eval: (c-set-style "gnu")
150 * End:
151 */