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https://github.com/espressif/esp-idf.git
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36735f4d77
This commit removes the lock from the list manipulation code in esp_netif_objects.c, because we already have another lock/task context for lwip. So the list manipulation is unsafe and safety must be assured by the stack layer (in esp_netif_lwip). Problems with current locking: * implementation of locking was wrong -- lazy init style of creating the mutex is not thread safe (and destroying it if we have no interface makes the problem exhibit very frequently) * locking only the list won't solve issues when assessing interfaces atomically * maintaining multiple locks is problematic, as we often switch between lwip context and user context in internal implementation of esp_netif_lwip Closes https://github.com/espressif/esp-idf/issues/12261
84 lines
2.4 KiB
C
84 lines
2.4 KiB
C
/*
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* SPDX-FileCopyrightText: 2019-2023 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef _ESP_NETIF_LWIP_PPP_H_
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#define _ESP_NETIF_LWIP_PPP_H_
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/**
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* @brief Creates new PPP related structure
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* This needs to be called withing lwIP context
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*
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* @param[in] esp_netif pointer esp-netif instance
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* @param[in] stack_config TCP/IP stack configuration structure
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*
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* @return
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* - pointer to ppp-netif object on success
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* - NULL otherwise
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*/
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netif_related_data_t * esp_netif_new_ppp(esp_netif_t *esp_netif, const esp_netif_netstack_config_t *esp_netif_stack_config);
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/**
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* @brief Creates new PPP related structure
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* This needs to be called withing lwIP context
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*
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* @param[in] esp_netif pointer esp-netif instance
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*
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* @return
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* - ESP_OK on success
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*/
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esp_err_t esp_netif_start_ppp(esp_netif_t *esp_netif);
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/**
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* @brief Data path API to input incoming packets to PPP
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*
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* @param[in] ppp pointer to internal ppp context instance
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* @param[in] buffer pointer to the incoming data
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* @param[in] len length of the data
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* @param[in] eb external buffer ptr not used here (to be inline with input function prototypes)
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*
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* @return
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* - ESP_OK on success
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*/
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esp_netif_recv_ret_t esp_netif_lwip_ppp_input(void *ppp, void *buffer, size_t len, void *eb);
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/**
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* @brief Destroys the ppp netif object
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* This needs to be called withing lwIP context
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*
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* @param[in] netif_related pointer to internal ppp context instance
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*/
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void esp_netif_destroy_ppp(netif_related_data_t *netif_related);
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/**
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* @brief Stops the PPP interface
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* This needs to be called withing lwIP context
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*
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* @param[in] netif_related pointer to internal ppp context instance
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*
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* @return
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* - ESP_OK on success
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*/
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esp_err_t esp_netif_stop_ppp(netif_related_data_t *netif_related);
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/**
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* @brief Sets default netif for routing priority config
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* This needs to be called withing lwIP context
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*
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* @note: This function must be called from lwip thread
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*
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*/
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void esp_netif_ppp_set_default_netif(netif_related_data_t *netif_related);
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/**
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* @brief Set PPP auth internal version (TCPIP context must be locked)
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* This needs to be called withing lwIP context
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*
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* For params/return value description, please @refitem esp_netif_ppp_set_auth()
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*/
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esp_err_t esp_netif_ppp_set_auth_internal(esp_netif_t *netif, esp_netif_auth_type_t authtype, const char *user, const char *passwd);
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#endif // _ESP_NETIF_LWIP_PPP_H_
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