Ethernet
[Callback-style APIs]

A list of often ethtypes (although lwIP does not use all of them):

Enumerator:

ETHTYPE_IP	Internet protocol v4.
ETHTYPE_ARP	Address resolution protocol.
ETHTYPE_WOL	Wake on lan.
ETHTYPE_RARP	RARP.
ETHTYPE_VLAN	Virtual local area network.
ETHTYPE_IPV6	Internet protocol v6.
ETHTYPE_PPPOEDISC	PPP Over Ethernet Discovery Stage.
ETHTYPE_PPPOE	PPP Over Ethernet Session Stage.
ETHTYPE_JUMBO	Jumbo Frames.
ETHTYPE_PROFINET	Process field network.
ETHTYPE_ETHERCAT	Ethernet for control automation technology.
ETHTYPE_LLDP	Link layer discovery protocol.
ETHTYPE_SERCOS	Serial real-time communication system.
ETHTYPE_MRP	Media redundancy protocol.
ETHTYPE_PTP	Precision time protocol.
ETHTYPE_QINQ	Q-in-Q, 802.1ad.

Definition at line 108 of file lwip/prot/lwip_ethernet.h.

Process received ethernet frames.

Using this function instead of directly calling ip_input and passing ARP frames through etharp in ethernetif_input, the ARP cache is protected from concurrent access.
Don't call directly, pass to netif_add() and call netif->input().

Parameters:

p	the received packet, p->payload pointing to the ethernet header
netif	the network interface on which the packet was received

See also:

LWIP_HOOK_UNKNOWN_ETH_PROTOCOL

ETHARP_SUPPORT_VLAN

LWIP_HOOK_VLAN_CHECK

Send an ethernet packet on the network using netif->linkoutput(). The ethernet header is filled in before sending.

See also:

LWIP_HOOK_VLAN_SET

Parameters:

netif	the lwIP network interface on which to send the packet
p	the packet to send. pbuf layer must be PBUF_LINK.
src	the source MAC address to be copied into the ethernet header
dst	the destination MAC address to be copied into the ethernet header
eth_type	ethernet type (eth_type)

Returns:

ERR_OK if the packet was sent, any other err_t on failure

Definition at line 81 of file lwip_ethernet.c.