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SourceVuESP-IDF Framework and ExamplesESP-IDFesp_vfs_l2tap_eth_filter()

esp_vfs_l2tap_eth_filter() function

Filters received Ethernet L2 frames into L2 TAP infrastructure.

Syntax

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Summary

Declaration

Definition

from esp_vfs_l2tap.h:69

esp_err_t esp_vfs_l2tap_eth_filter(l2tap_iodriver_handle driver_handle, void *buff, size_t *size);

Implemented in esp_vfs_l2tap.c:174

Arguments

Argument

Description

driver_handle

handle of driver at which the frame was received

buff

received L2 frame

size

input length of the L2 frame which is set to 0 when frame is filtered into L2 TAP

Return value

esp_err_t - ESP_OK is always returned

References

Code

Location

Referrer

esp_err_t esp_vfs_l2tap_eth_filter(l2tap_iodriver_handle driver_handle, void *buff, size_t *size)

esp_vfs_l2tap.c:174

esp_err_t esp_vfs_l2tap_eth_filter(l2tap_iodriver_handle driver_handle, void *buff, size_t *size);

esp_vfs_l2tap.h:69

ret = esp_vfs_l2tap_eth_filter(eth_handle, buffer, (size_t *)&length);

esp_eth_netif_glue.c:36

eth_input_to_netif()

Call Tree

esp_vfs_l2tap_eth_filter() is called by 1 function and calls 7 functions:

eth_input_to_netif()

esp_vfs_l2tap_eth_filter()

l2tap_context_t::driver_free_rx_buffer

l2tap_select_notify()

Data Use

esp_vfs_l2tap_eth_filter() reads 13 variables:

esp_log_level_t::ESP_LOG_ERROR

esp_log_level_t::ESP_LOG_WARN

esp_log_level_t::ESP_LOG_INFO

esp_log_level_t::ESP_LOG_DEBUG

esp_log_level_t::ESP_LOG_VERBOSE

l2tap_select_notif_e::L2TAP_SELECT_READ_NOTIF

s_l2tap_sockets

s_registered_select_cnt

TAG

l2tap_socket_state_t::L2TAP_SOCK_STATE_OPENED

l2tap_context_t::driver_handle

l2tap_context_t::ethtype_filter

eth_hdr::type

esp_vfs_l2tap_eth_filter()

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