1# Copyright (c) 2018 Intel Corporation. 2# SPDX-License-Identifier: Apache-2.0 3 4menuconfig NET_L2_ETHERNET 5 bool "Ethernet support" 6 help 7 Add support for Ethernet, enabling selecting relevant hardware drivers. 8 If NET_SLIP_TAP is selected, NET_L2_ETHERNET will enable to fully 9 simulate Ethernet through SLIP. 10 11if NET_L2_ETHERNET 12 13module = NET_L2_ETHERNET 14module-dep = NET_LOG 15module-str = Log level for Ethernet L2 layer 16module-help = Enables Ethernet L2 to output debug messages. 17source "subsys/net/Kconfig.template.log_config.net" 18 19config NET_L2_ETHERNET_RESERVE_HEADER 20 bool "Reserve space for Ethernet header in first net_buf in TX" 21 help 22 If enabled, then reserve space for Ethernet header to the first 23 net_buf when sending data. The default is still to have layer 2 24 header in a separate net_buf. In RX side the Ethernet header 25 is always part of the first net_buf. 26 27config NET_L2_ETHERNET_MGMT 28 bool "Ethernet network management interface" 29 select NET_MGMT 30 select NET_MGMT_EVENT 31 help 32 Enable support net_mgmt Ethernet interface which can be used to 33 configure at run-time Ethernet drivers and L2 settings. 34 35 36config NET_L2_ETHERNET_ACCEPT_MISMATCH_L3_L2_ADDR 37 bool "Accept mismatched L3 and L2 addresses" 38 help 39 If enabled, then accept packets where the L3 and L2 addresses do not 40 conform to RFC1122 section 3.3.6. This is useful in dealing with 41 buggy devices that do not follow the RFC. 42 43config NET_VLAN 44 bool "Virtual LAN support" 45 select NET_L2_VIRTUAL 46 help 47 Enables virtual lan (VLAN) support for Ethernet. 48 49config NET_VLAN_COUNT 50 int "Max VLAN tags supported in the system" 51 default 1 52 range 0 $(UINT8_MAX) 53 depends on NET_VLAN 54 help 55 How many VLAN tags can be configured. If set to 0, then only 56 priority tagged VLAN frames with tag value 0 can be handled. 57 This is useful if you do not want to receive any other VLAN 58 tagged frames than tag 0. This will save some memory as the 59 VLAN virtual interface is not created in this case. 60 61config NET_VLAN_TXRX_DEBUG 62 bool "Debug received and sent packets in VLAN" 63 depends on NET_L2_ETHERNET_LOG_LEVEL_DBG && NET_VLAN 64 help 65 Enables printing of received and sent network packets. 66 This can produce lot of output so it is disabled by default. 67 68config NET_ARP 69 bool "ARP" 70 default y 71 depends on NET_IPV4 72 help 73 Enable ARP support. This is necessary on hardware that requires it to 74 get IPv4 working (like Ethernet devices). 75 76config NET_ARP_TABLE_SIZE 77 int "Number of entries in ARP table." 78 depends on NET_ARP 79 default 2 80 help 81 Each entry in the ARP table consumes 48 bytes of memory. 82 83config NET_ARP_GRATUITOUS 84 bool "Support gratuitous ARP requests/replies." 85 depends on NET_ARP 86 default y 87 help 88 Gratuitous in this case means a ARP request or reply that is not 89 normally needed according to the ARP specification but could be used 90 in some cases. A gratuitous ARP request is a ARP request packet where 91 the source and destination IP are both set to the IP of the machine 92 issuing the packet and the destination MAC is the broadcast address 93 ff:ff:ff:ff:ff:ff. Ordinarily, no reply packet will occur. 94 A gratuitous ARP reply is a reply to which no request has been made. 95 96config NET_ARP_GRATUITOUS_TRANSMISSION 97 bool "Transmit gratuitous ARP requests" 98 depends on NET_ARP_GRATUITOUS 99 depends on NET_MGMT_EVENT 100 depends on NET_MGMT_EVENT_INFO 101 help 102 Transmit gratuitous ARP requests, as defined in RFC 5227. 103 104config NET_ARP_GRATUITOUS_INTERVAL 105 int "Time interval (in seconds) between sending gratuitous ARP requests" 106 depends on NET_ARP_GRATUITOUS_TRANSMISSION 107 default 60 108 109if NET_ARP 110module = NET_ARP 111module-dep = NET_LOG 112module-str = Log level for IPv4 ARP 113module-help = Enables core ARP code to output debug messages. 114source "subsys/net/Kconfig.template.log_config.net" 115endif # NET_ARP 116 117source "subsys/net/l2/ethernet/gptp/Kconfig" 118source "subsys/net/l2/ethernet/lldp/Kconfig" 119 120config NET_ETHERNET_BRIDGE 121 bool "Ethernet Bridging support" 122 select NET_PROMISCUOUS_MODE 123 select NET_L2_VIRTUAL 124 help 125 Enables Ethernet bridging where packets can be transparently 126 forwarded across interfaces registered to a bridge. 127 128config NET_ETHERNET_BRIDGE_COUNT 129 int "Max number of bridge interfaces" 130 default 1 131 range 1 16 132 depends on NET_ETHERNET_BRIDGE 133 help 134 How many bridge interfaces are created. Each interface can bridge 135 two or more Ethernet interfaces. 136 137config NET_ETHERNET_BRIDGE_ETH_INTERFACE_COUNT 138 int "Max number of Ethernet interfaces bridged together" 139 default 2 140 range 2 32 141 depends on NET_ETHERNET_BRIDGE 142 help 143 How many Ethernet interfaces can be bridged together per each 144 bridge interface. 145 146if NET_ETHERNET_BRIDGE 147module = NET_ETHERNET_BRIDGE 148module-dep = NET_LOG 149module-str = Log level for Ethernet Bridging 150module-help = Enables Ethernet Bridge code to output debug messages. 151source "subsys/net/Kconfig.template.log_config.net" 152endif # NET_ETHERNET_BRIDGE 153 154config NET_ETHERNET_BRIDGE_TXRX_DEBUG 155 bool "Debug received and sent packets in bridge" 156 depends on NET_L2_ETHERNET_LOG_LEVEL_DBG && NET_ETHERNET_BRIDGE 157 help 158 Enables printing of received and sent network packets. 159 This can produce lot of output so it is disabled by default. 160 161config NET_ETHERNET_BRIDGE_SHELL 162 bool "Ethernet Bridging management shell" 163 depends on NET_ETHERNET_BRIDGE 164 select NET_SHELL 165 help 166 Enables shell utility to manage bridge configuration interactively. 167 168config NET_ETHERNET_FORWARD_UNRECOGNISED_ETHERTYPE 169 bool "Forward unrecognized EtherType frames further into net stack" 170 default y if NET_SOCKETS_PACKET 171 help 172 When enabled, the Ethernet L2 will forward even those frames for which 173 it does not recognize the EtherType in the header. By default, such 174 frames are dropped at the L2 processing. 175 176endif # NET_L2_ETHERNET 177
