dplpmtud.h

Go to the documentation of this file.

/*
 * SPDX-FileCopyrightText: Copyright The Zephyr Project Contributors
 * SPDX-License-Identifier: Apache-2.0
 */

 
#ifndef ZEPHYR_INCLUDE_NET_DPLPMTUD_H_
#define ZEPHYR_INCLUDE_NET_DPLPMTUD_H_
 
#include <zephyr/net/net_ip.h>
 
#ifdef __cplusplus
extern "C" {
#endif

#define NET_DPLPMTUD_BASE_PLPMTU 1200U

enum net_dplpmtud_state {
        NET_DPLPMTUD_STATE_BASE = 0,      
        NET_DPLPMTUD_STATE_SEARCHING,     
        NET_DPLPMTUD_STATE_SEARCH_COMPLETE, 
        NET_DPLPMTUD_STATE_ERROR,         
};

struct net_dplpmtud_path {
        struct net_sockaddr_storage dst;

        uint16_t max_plpmtu;

        bool in_use;
};

int net_dplpmtud_init_path(struct net_dplpmtud_path *path,
                           const struct net_sockaddr *dst,
                           uint16_t max_plpmtu);

void net_dplpmtud_set_path_max_plpmtu(struct net_dplpmtud_path *path,
                                      uint16_t max_plpmtu);

int net_dplpmtud_get_path_mtu(struct net_dplpmtud_path *path);

int net_dplpmtud_get_path_probe_size(struct net_dplpmtud_path *path);

bool net_dplpmtud_path_probe_in_flight(struct net_dplpmtud_path *path);

int net_dplpmtud_on_path_probe_sent(struct net_dplpmtud_path *path,
                                    uint16_t probe_size);

int net_dplpmtud_on_path_probe_acked(struct net_dplpmtud_path *path,
                                     uint16_t probe_size);

int net_dplpmtud_on_path_probe_lost(struct net_dplpmtud_path *path,
                                    uint16_t probe_size);

void net_dplpmtud_note_path_blackhole(struct net_dplpmtud_path *path);
 
#ifdef __cplusplus
}
#endif

 
#endif /* ZEPHYR_INCLUDE_NET_DPLPMTUD_H_ */