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//
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
#ifndef _UHD_DPDK_WAIT_H_
#define _UHD_DPDK_WAIT_H_
#include "uhd_dpdk_ctx.h"
#include <rte_malloc.h>
enum uhd_dpdk_wait_type {
UHD_DPDK_WAIT_SIMPLE,
UHD_DPDK_WAIT_RX,
UHD_DPDK_WAIT_TX_BUF,
UHD_DPDK_WAIT_TYPE_COUNT
};
struct uhd_dpdk_wait_req {
enum uhd_dpdk_wait_type reason;
struct uhd_dpdk_socket *sock;
pthread_cond_t cond;
pthread_mutex_t mutex;
rte_atomic32_t refcnt; /* free resources only when refcnt = 0 */
};
static inline void uhd_dpdk_waiter_put(struct uhd_dpdk_wait_req *req)
{
if (rte_atomic32_dec_and_test(&req->refcnt)) {
rte_free(req);
}
}
static inline void uhd_dpdk_waiter_get(struct uhd_dpdk_wait_req *req)
{
rte_atomic32_inc(&req->refcnt);
}
/*
* Attempt to wake thread
* Re-enqueue waiter to thread's waiter_queue if fail
*/
int _uhd_dpdk_waiter_wake(struct uhd_dpdk_wait_req *req,
struct uhd_dpdk_thread *t);
/*
* Allocates wait request and sets refcnt to 1
*/
struct uhd_dpdk_wait_req *uhd_dpdk_waiter_alloc(enum uhd_dpdk_wait_type reason);
/*
* Block and send wait request to thread t
*/
int uhd_dpdk_waiter_wait(struct uhd_dpdk_wait_req *req, int timeout,
struct uhd_dpdk_thread *t);
/*
* Block and submit config request to thread t
*/
int uhd_dpdk_config_req_submit(struct uhd_dpdk_config_req *req,
int timeout, struct uhd_dpdk_thread *t);
#endif /* _UHD_DPDK_WAIT_H_ */
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