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/*
* Copyright (c) 2022 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <http/http_timer.h>
#include <vnet/session/session.h>
http_tw_ctx_t http_tw_ctx;
static void
http_timer_process_expired_cb (u32 *expired_timers)
{
http_tw_ctx_t *twc = &http_tw_ctx;
u32 hs_handle;
int i;
for (i = 0; i < vec_len (expired_timers); i++)
{
/* Get session handle. The first bit is the timer id */
hs_handle = expired_timers[i] & 0x7FFFFFFF;
session_send_rpc_evt_to_thread (hs_handle >> 24, twc->cb_fn,
uword_to_pointer (hs_handle, void *));
}
}
static uword
http_timer_process (vlib_main_t *vm, vlib_node_runtime_t *rt, vlib_frame_t *f)
{
http_tw_ctx_t *twc = &http_tw_ctx;
f64 now, timeout = 1.0;
uword *event_data = 0;
uword __clib_unused event_type;
while (1)
{
vlib_process_wait_for_event_or_clock (vm, timeout);
now = vlib_time_now (vm);
event_type = vlib_process_get_events (vm, (uword **) &event_data);
/* expire timers */
clib_spinlock_lock (&twc->tw_lock);
tw_timer_expire_timers_2t_1w_2048sl (&twc->tw, now);
clib_spinlock_unlock (&twc->tw_lock);
vec_reset_length (event_data);
}
return 0;
}
VLIB_REGISTER_NODE (http_timer_process_node) = {
.function = http_timer_process,
.type = VLIB_NODE_TYPE_PROCESS,
.name = "http-timer-process",
.state = VLIB_NODE_STATE_DISABLED,
};
void
http_timers_init (vlib_main_t *vm, http_conn_timeout_fn *cb_fn)
{
http_tw_ctx_t *twc = &http_tw_ctx;
vlib_node_t *n;
ASSERT (twc->tw.timers == 0);
tw_timer_wheel_init_2t_1w_2048sl (&twc->tw, http_timer_process_expired_cb,
1.0 /* timer interval */, ~0);
clib_spinlock_init (&twc->tw_lock);
twc->cb_fn = cb_fn;
vlib_node_set_state (vm, http_timer_process_node.index,
VLIB_NODE_STATE_POLLING);
n = vlib_get_node (vm, http_timer_process_node.index);
vlib_start_process (vm, n->runtime_index);
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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