OVMS3-idf/components/esp_netif/lwip/esp_netif_lwip_ppp.h
David Cermak e8ff22b5fb esp-netif: set default interface for ppp netif must be called from lwip context
On update of any interface (set up/down) a routing preference is updated calling esp_netif_update_default_netif() that is called from
lwip context. But if the related netif was ppp type, the set_default api used user-mode, thus causing a dead lock.

Closes https://github.com/espressif/esp-idf/issues/4746
2020-03-19 13:16:24 +00:00

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// Copyright 2019 Espressif Systems (Shanghai) PTE LTD
//
// 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.
#ifndef _ESP_NETIF_LWIP_PPP_H_
#define _ESP_NETIF_LWIP_PPP_H_
/**
* @brief Creates new PPP related structure
*
* @param[in] esp_netif pointer esp-netif instance
* @param[in] stack_config TCP/IP stack configuration structure
*
* @return
* - pointer to ppp-netif object on success
* - NULL otherwise
*/
lwip_ppp_ctx_t* esp_netif_new_ppp(esp_netif_t *esp_netif, const esp_netif_netstack_config_t *esp_netif_stack_config);
/**
* @brief Creates new PPP related structure
*
* @param[in] ppp pointer to internal ppp context instance
*
* @return
* - ESP_OK on success
*/
esp_err_t esp_netif_start_ppp(lwip_ppp_ctx_t *ppp);
/**
* @brief Data path API to input incoming packets to PPP
*
* @param[in] ppp pointer to internal ppp context instance
* @param[in] buffer pointer to the incoming data
* @param[in] len length of the data
* @param[in] eb external buffer ptr not used here (to be inline with input function prototypes)
*
* @return
* - ESP_OK on success
*/
void esp_netif_lwip_ppp_input(void *ppp, void *buffer, size_t len, void *eb);
/**
* @brief Destroys the ppp netif object
*
* @param[in] ppp pointer to internal ppp context instance
*/
void esp_netif_destroy_ppp(lwip_ppp_ctx_t *ppp);
/**
* @brief Stops the PPP interface
*
* @param[in] ppp pointer to internal ppp context instance
*
* @return
* - ESP_OK on success
*/
esp_err_t esp_netif_stop_ppp(lwip_ppp_ctx_t *ppp);
/**
* @brief Sets default netif for routing priority config
*
* @note: This function must be called from lwip thread
*
*/
void esp_netif_ppp_set_default_netif(lwip_ppp_ctx_t* ppp_ctx);
#endif // _ESP_NETIF_LWIP_PPP_H_