svm: allow mq attachments at random offsets
[vpp.git] / src / plugins / hs_apps / sapi / vpp_echo_proto_udp.c
1 /*
2  * Copyright (c) 2019 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
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 <stdio.h>
17 #include <signal.h>
18
19 #include <hs_apps/sapi/vpp_echo_common.h>
20
21 static void
22 udp_echo_cleanup_cb (echo_session_t * s, u8 parent_died)
23 {
24   echo_main_t *em = &echo_main;
25   echo_session_t *ls;
26   ASSERT (s->session_state < ECHO_SESSION_STATE_CLOSED);
27   if (parent_died)
28     clib_atomic_fetch_add (&em->stats.clean_count.s, 1);
29   else if (s->listener_index != SESSION_INVALID_INDEX)
30     {
31       ls = pool_elt_at_index (em->sessions, s->listener_index);
32       clib_atomic_sub_fetch (&ls->accepted_session_count, 1);
33     }
34
35   clib_atomic_sub_fetch (&em->n_clients_connected, 1);
36   s->session_state = ECHO_SESSION_STATE_CLOSED;
37   if (!em->n_clients_connected)
38     em->state = STATE_DATA_DONE;
39 }
40
41 static void
42 udp_echo_connected_cb (session_connected_bundled_msg_t * mp,
43                        u32 session_index, u8 is_failed)
44 {
45   static u32 client_index = 0;
46   echo_main_t *em = &echo_main;
47   echo_session_t *session = pool_elt_at_index (em->sessions, session_index);
48   if (is_failed)
49     {
50       ECHO_FAIL (ECHO_FAIL_UDP_BAPI_CONNECT,
51                  "Bapi connect errored on session %u", session_index);
52       return;                   /* Dont handle bapi connect errors for now */
53     }
54
55   session->accepted_session_count = 0;
56   session->session_type = ECHO_SESSION_TYPE_STREAM;
57
58   session->bytes_to_send = em->bytes_to_send;
59   session->bytes_to_receive = em->bytes_to_receive;
60   session->session_state = ECHO_SESSION_STATE_READY;
61   session->is_dgram = 1;
62
63   em->data_thread_args[client_index++] = session->session_index;
64
65   clib_atomic_fetch_add (&em->n_clients_connected, 1);
66   if (em->n_clients_connected == em->n_clients && em->state < STATE_READY)
67     {
68       echo_notify_event (em, ECHO_EVT_LAST_SCONNECTED);
69       em->state = STATE_READY;
70     }
71 }
72
73 static void
74 udp_echo_accepted_cb (session_accepted_msg_t * mp, echo_session_t * session)
75 {
76   static u32 client_index = 0;
77   echo_main_t *em = &echo_main;
78   echo_session_t *ls;
79
80   echo_notify_event (em, ECHO_EVT_FIRST_QCONNECT);
81   ls = pool_elt_at_index (em->sessions, session->listener_index);
82   session->session_type = ECHO_SESSION_TYPE_STREAM;
83   echo_notify_event (em, ECHO_EVT_FIRST_SCONNECT);
84   clib_atomic_fetch_add (&ls->accepted_session_count, 1);
85   clib_atomic_fetch_add (&em->n_clients_connected, 1);
86
87   session->bytes_to_send = em->bytes_to_send;
88   session->bytes_to_receive = em->bytes_to_receive;
89   session->is_dgram = 1;
90   em->data_thread_args[client_index++] = session->session_index;
91   session->session_state = ECHO_SESSION_STATE_READY;
92
93   if (em->n_clients_connected == em->n_clients && em->state < STATE_READY)
94     {
95       echo_notify_event (em, ECHO_EVT_LAST_SCONNECTED);
96       em->state = STATE_READY;
97     }
98 }
99
100 static void
101 udp_echo_sent_disconnect_cb (echo_session_t * s)
102 {
103   s->session_state = ECHO_SESSION_STATE_CLOSING;
104 }
105
106 static void
107 udp_echo_disconnected_cb (session_disconnected_msg_t * mp, echo_session_t * s)
108 {
109   echo_main_t *em = &echo_main;
110   echo_session_print_stats (em, s);
111   if (s->bytes_to_receive || s->bytes_to_send)
112     s->session_state = ECHO_SESSION_STATE_AWAIT_DATA;
113   else
114     s->session_state = ECHO_SESSION_STATE_CLOSING;
115   clib_atomic_fetch_add (&em->stats.close_count.s, 1);
116 }
117
118 static void
119 udp_echo_reset_cb (session_reset_msg_t * mp, echo_session_t * s)
120 {
121   echo_main_t *em = &echo_main;
122   clib_atomic_fetch_add (&em->stats.reset_count.s, 1);
123   s->session_state = ECHO_SESSION_STATE_CLOSING;
124 }
125
126 static void
127 udp_echo_bound_uri_cb (session_bound_msg_t * mp, echo_session_t * session)
128 {
129   echo_main_t *em = &echo_main;
130   u32 session_index = session->session_index;
131   if (!em->i_am_master || em->uri_elts.transport_proto != TRANSPORT_PROTO_UDP)
132     return;
133
134   if (echo_attach_session (mp->segment_handle, mp->rx_fifo, mp->tx_fifo,
135                            mp->vpp_evt_q, session))
136     {
137       ECHO_FAIL (ECHO_FAIL_ACCEPTED_WAIT_FOR_SEG_ALLOC,
138                  "accepted wait_for_segment_allocation errored");
139       return;
140     }
141
142   session->transport.is_ip4 = mp->lcl_is_ip4;
143   clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
144                     sizeof (ip46_address_t));
145   session->transport.lcl_port = mp->lcl_port;
146
147   echo_notify_event (em, ECHO_EVT_FIRST_QCONNECT);
148   session->session_type = ECHO_SESSION_TYPE_STREAM;
149   echo_notify_event (em, ECHO_EVT_FIRST_SCONNECT);
150   clib_atomic_fetch_add (&em->n_clients_connected, 1);
151
152   session->bytes_to_send = em->bytes_to_send;
153   session->bytes_to_receive = em->bytes_to_receive;
154   session->is_dgram = 1;
155   em->data_thread_args[0] = session_index;
156   session->session_state = ECHO_SESSION_STATE_READY;
157
158   echo_notify_event (em, ECHO_EVT_LAST_SCONNECTED);
159   em->state = STATE_READY;
160 }
161
162
163 echo_proto_cb_vft_t echo_udp_proto_cb_vft = {
164   .disconnected_cb = udp_echo_disconnected_cb,
165   .connected_cb = udp_echo_connected_cb,
166   .accepted_cb = udp_echo_accepted_cb,
167   .reset_cb = udp_echo_reset_cb,
168   .sent_disconnect_cb = udp_echo_sent_disconnect_cb,
169   .cleanup_cb = udp_echo_cleanup_cb,
170   .bound_uri_cb = udp_echo_bound_uri_cb,
171 };
172
173 ECHO_REGISTER_PROTO (TRANSPORT_PROTO_UDP, echo_udp_proto_cb_vft);
174
175 /*
176  * fd.io coding-style-patch-verification: ON
177  *
178  * Local Variables:
179  * eval: (c-set-style "gnu")
180  * End:
181  */