mirror of
https://github.com/espressif/ESP8266_RTOS_SDK.git
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611 lines
17 KiB
Plaintext
611 lines
17 KiB
Plaintext
menu "LWIP"
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menu "ARP"
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config LWIP_ARP_TABLE_SIZE
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int "Number of active MAC-IP address pairs cached"
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range 1 16
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default 10
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config LWIP_ARP_MAXAGE
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int "The time an ARP entry stays valid after its last update"
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range 100 65535
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default 300
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endmenu # LWIP ARP
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menu "SOCKET"
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config LWIP_MAX_SOCKETS
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int "Max number of open sockets"
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range 1 16
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default 10
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help
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Sockets take up a certain amount of memory, and allowing fewer
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sockets to be open at the same time conserves memory. Specify
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the maximum amount of sockets here. The valid value is from 1
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to 16.
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config LWIP_SO_REUSE
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bool "Enable SO_REUSEADDR option"
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default y
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help
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Enabling this option allows binding to a port which remains in
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TIME_WAIT.
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config LWIP_SO_REUSE_RXTOALL
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bool "SO_REUSEADDR copies broadcast/multicast to all matches"
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depends on LWIP_SO_REUSE
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default y
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help
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Enabling this option means that any incoming broadcast or multicast
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packet will be copied to all of the local sockets that it matches
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(may be more than one if SO_REUSEADDR is set on the socket.)
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This increases memory overhead as the packets need to be copied,
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however they are only copied per matching socket. You can safely
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disable it if you don't plan to receive broadcast or multicast
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traffic on more than one socket at a time.
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config LWIP_SO_RCVBUF
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bool "Enable SO_RCVBUF option"
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default n
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help
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Enabling this option allows checking for available data on a netconn.
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config LWIP_SO_LINGER
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bool "Enable SO_LINGER processing"
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default n
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config LWIP_RECV_BUFSIZE_DEFAULT
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int "The default value for recv_bufsize"
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default 11680
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range 2920 11680
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config LWIP_TCP_CLOSE_TIMEOUT_MS_DEFAULT
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int "TCP socket/netconn close waits time to send the FIN"
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default 10000
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range 10000 20000
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endmenu # LWIP SOCKET
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config LWIP_IP_FRAG
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bool "Enable fragment outgoing IP packets"
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default n
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help
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Enabling this option allows fragmenting outgoing IP packets if their size
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exceeds MTU.
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menuconfig LWIP_IP_REASSEMBLY
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bool "Enable reassembly incoming fragmented IP packets"
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default n
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help
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Enabling this option allows reassemblying incoming fragmented IP packets.
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config LWIP_IP_REASS_MAX_PBUFS
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int "Total maximum amount of pbufs waiting to be reassembled"
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default 10
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range 1 16
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config LWIP_IP_SOF_BROADCAST
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bool "Enable broadcast filter per pcb on udp and raw send operation"
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default n
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help
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config LWIP_IP_SOF_BROADCAST_RECV
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bool "Enable the broadcast filter on recv operations"
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default n
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help
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menuconfig LWIP_ICMP
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bool "ICMP"
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default y
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help
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config LWIP_MULTICAST_PING
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bool "Respond to multicast pings"
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default n
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depends on LWIP_ICMP
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config LWIP_BROADCAST_PING
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bool "Respond to broadcast pings"
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default n
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depends on LWIP_ICMP
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config LWIP_RAW
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bool "Enable application layer to hook into the IP layer itself"
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default n
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menu "DHCP"
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config LWIP_DHCP_DOES_ARP_CHECK
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bool "DHCP: Perform ARP check on any offered address"
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default y
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help
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Enabling this option performs a check (via ARP request) if the offered IP address
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is not already in use by another host on the network.
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config LWIP_DHCP_MAX_NTP_SERVERS
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int "Maximum number of NTP servers"
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default 1
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range 1 8
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help
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Set maximum number of NTP servers used by LwIP SNTP module.
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First argument of sntp_setserver/sntp_setservername functions
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is limited to this value.
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config LWIP_DHCPS_LEASE_UNIT
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int "Multiplier for lease time, in seconds"
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range 1 3600
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default 60
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help
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The DHCP server is calculating lease time multiplying the sent
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and received times by this number of seconds per unit.
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The default is 60, that equals one minute.
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config LWIP_DHCPS_MAX_STATION_NUM
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int "Maximum number of stations"
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range 1 8
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default 8
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help
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The maximum number of DHCP clients that are connected to the server.
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After this number is exceeded, DHCP server removes of the oldest device
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from it's address pool, without notification.
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endmenu #DHCP
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menuconfig LWIP_AUTOIP
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bool "Enable IPV4 Link-Local Addressing (AUTOIP)"
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default n
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help
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Enabling this option allows the device to self-assign an address
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in the 169.256/16 range if none is assigned statically or via DHCP.
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See RFC 3927.
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config LWIP_DHCP_AUTOIP_COOP_TRIES
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int "DHCP Probes before self-assigning IPv4 LL address"
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range 1 100
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default 2
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depends on LWIP_AUTOIP
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help
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DHCP client will send this many probes before self-assigning a
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link local address.
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From LWIP help: "This can be set as low as 1 to get an AutoIP
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address very quickly, but you should be prepared to handle a
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changing IP address when DHCP overrides AutoIP."
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config LWIP_IGMP
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bool "Enable IGMP module"
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default y
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config DNS_MAX_SERVERS
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int "The maximum of DNS servers"
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range 1 5
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default 2
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menuconfig LWIP_NETIF_LOOPBACK
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bool "Enable per-interface loopback"
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default n
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help
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Enabling this option means that if a packet is sent with a destination
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address equal to the interface's own IP address, it will "loop back" and
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be received by this interface.
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config LWIP_LOOPBACK_MAX_PBUFS
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int "Max queued loopback packets per interface"
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range 0 16
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default 0
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depends on LWIP_NETIF_LOOPBACK
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help
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Configure the maximum number of packets which can be queued for
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loopback on a given interface. Reducing this number may cause packets
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to be dropped, but will avoid filling memory with queued packet data.
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menu "TCP"
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config LWIP_MAX_ACTIVE_TCP
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int "Maximum active TCP Connections"
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range 1 32
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default 5
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help
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The maximum number of simultaneously active TCP
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connections. The practical maximum limit is
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determined by available heap memory at runtime.
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Changing this value by itself does not substantially
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change the memory usage of LWIP, except for preventing
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new TCP connections after the limit is reached.
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config LWIP_MAX_LISTENING_TCP
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int "Maximum listening TCP Connections"
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range 1 16
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default 8
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help
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The maximum number of simultaneously listening TCP
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connections. The practical maximum limit is
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determined by available heap memory at runtime.
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Changing this value by itself does not substantially
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change the memory usage of LWIP, except for preventing
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new listening TCP connections after the limit is reached.
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config TCP_MAXRTX
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int "Maximum number of retransmissions of data segments"
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default 12
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range 3 12
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help
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Set maximum number of retransmissions of data segments.
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config TCP_SYNMAXRTX
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int "Maximum number of retransmissions of SYN segments"
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default 6
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range 3 12
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help
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Set maximum number of retransmissions of SYN segments.
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config TCP_MSS
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int "Maximum Segment Size (MSS)"
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default 1460
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range 536 1460
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help
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Set maximum segment size for TCP transmission.
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Can be set lower to save RAM, the default value 1436 will give best throughput.
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config TCP_SND_BUF_DEFAULT
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int "Default send buffer size"
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default 2920 # 2 * default MSS
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range 2920 11680
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help
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Set default send buffer size for new TCP sockets.
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Per-socket send buffer size can be changed at runtime
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with lwip_setsockopt(s, TCP_SNDBUF, ...).
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This value must be at least 2x the MSS size, and the default
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is 4x the default MSS size.
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Setting a smaller default SNDBUF size can save some RAM, but
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will decrease performance.
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config TCP_WND_DEFAULT
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int "Default receive window size"
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default 5840 # 4 * default MSS
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range 2920 11680
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help
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Set default TCP receive window size for new TCP sockets.
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Per-socket receive window size can be changed at runtime
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with lwip_setsockopt(s, TCP_WINDOW, ...).
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Setting a smaller default receive window size can save some RAM,
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but will significantly decrease performance.
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config TCP_RECVMBOX_SIZE
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int "Default TCP receive mail box size"
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default 6
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range 6 32
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help
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Set TCP receive mail box size. Generally bigger value means higher throughput
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but more memory. The recommended value is: TCP_WND_DEFAULT/TCP_MSS + 2, e.g. if
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TCP_WND_DEFAULT=14360, TCP_MSS=1436, then the recommended receive mail box size is
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(14360/1436 + 2) = 12.
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TCP receive mail box is a per socket mail box, when the application receives packets
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from TCP socket, LWIP core firstly posts the packets to TCP receive mail box and the
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application then fetches the packets from mail box. It means LWIP can caches maximum
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TCP_RECCVMBOX_SIZE packets for each TCP socket, so the maximum possible cached TCP packets
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for all TCP sockets is TCP_RECCVMBOX_SIZE multiples the maximum TCP socket number. In other
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words, the bigger TCP_RECVMBOX_SIZE means more memory.
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On the other hand, if the receiv mail box is too small, the mail box may be full. If the
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mail box is full, the LWIP drops the packets. So generally we need to make sure the TCP
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receive mail box is big enough to avoid packet drop between LWIP core and application.
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config TCP_QUEUE_OOSEQ
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bool "Queue incoming out-of-order segments"
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default n
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help
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Queue incoming out-of-order segments for later use.
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Disable this option to save some RAM during TCP sessions, at the expense
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of increased retransmissions if segments arrive out of order.
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choice TCP_OVERSIZE
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prompt "Pre-allocate transmit PBUF size"
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default TCP_OVERSIZE_MSS
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help
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Allows enabling "oversize" allocation of TCP transmission pbufs ahead of time,
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which can reduce the length of pbuf chains used for transmission.
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This will not make a difference to sockets where Nagle's algorithm
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is disabled.
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Default value of MSS is fine for most applications, 25% MSS may save
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some RAM when only transmitting small amounts of data. Disabled will
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have worst performance and fragmentation characteristics, but uses
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least RAM overall.
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config TCP_OVERSIZE_MSS
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bool "MSS"
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config TCP_OVERSIZE_QUARTER_MSS
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bool "25% MSS"
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config TCP_OVERSIZE_DISABLE
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bool "Disabled"
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endchoice
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config LWIP_TCP_TIMESTAMPS
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bool "Support the TCP timestamp option"
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default n
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help
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The timestamp option is currently only used to help remote hosts, it is not
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really used locally. Therefore, it is only enabled when a TS option is
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received in the initial SYN packet from a remote host.
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endmenu # TCP
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menu "UDP"
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config LWIP_MAX_UDP_PCBS
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int "Maximum active UDP control blocks"
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range 1 32
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default 4
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help
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The maximum number of active UDP "connections" (ie
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UDP sockets sending/receiving data).
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The practical maximum limit is determined by available
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heap memory at runtime.
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config UDP_RECVMBOX_SIZE
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int "Default UDP receive mail box size"
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default 6
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range 6 64
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help
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Set UDP receive mail box size. The recommended value is 6.
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UDP receive mail box is a per socket mail box, when the application receives packets
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from UDP socket, LWIP core firstly posts the packets to UDP receive mail box and the
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application then fetches the packets from mail box. It means LWIP can caches maximum
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UDP_RECCVMBOX_SIZE packets for each UDP socket, so the maximum possible cached UDP packets
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for all UDP sockets is UDP_RECCVMBOX_SIZE multiples the maximum UDP socket number. In other
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words, the bigger UDP_RECVMBOX_SIZE means more memory.
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On the other hand, if the receiv mail box is too small, the mail box may be full. If the
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mail box is full, the LWIP drops the packets. So generally we need to make sure the UDP
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receive mail box is big enough to avoid packet drop between LWIP core and application.
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endmenu # UDP
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config TCPIP_TASK_STACK_SIZE
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int "TCP/IP Task Stack Size"
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default 512
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range 512 2048
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help
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Configure TCP/IP task stack size, used by LWIP to process multi-threaded TCP/IP operations.
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Setting this stack too small will result in stack overflow crashes.
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menu "LWIP RAW API"
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config LWIP_MAX_RAW_PCBS
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int "Maximum LWIP RAW PCBs"
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range 1 32
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default 4
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help
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The maximum number of simultaneously active LWIP
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RAW protocol control blocks. The practical maximum
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limit is determined by available heap memory at runtime.
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endmenu # LWIP RAW API
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menuconfig LWIP_IPV6
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bool "Enable IPv6"
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default y
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config LWIP_IPV6_NUM_ADDRESSES
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int "Number of IPv6 addresses per netif"
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depends on LWIP_IPV6
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range 3 5
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default 3
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config LWIP_IPV6_FORWARD
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bool "Forward IPv6 packets across netifs"
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depends on LWIP_IPV6
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default n
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config LWIP_IPV6_FRAG
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bool "Fragment outgoing IPv6 packets that are too big"
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depends on LWIP_IPV6
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default n
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config LWIP_STATS
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bool "Enable statistics collection in lwip_stats"
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default n
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menuconfig LWIP_DEBUG
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bool "Enable lwip Debug"
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default n
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config LWIP_ETHARP_DEBUG
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bool "Enable debugging in etharp.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_NETIF_DEBUG
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bool "Enable debugging in netif.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_PBUF_DEBUG
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bool "Enable debugging in pbuf.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_API_LIB_DEBUG
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bool "Enable debugging in api_lib.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_API_MSG_DEBUG
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bool "Enable debugging in api_msg.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_SOCKETS_DEBUG
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bool "Enable debugging in sockets.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_ICMP_DEBUG
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bool "Enable debugging in icmp.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_IGMP_DEBUG
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bool "Enable debugging in igmp.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_INET_DEBUG
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bool "Enable debugging in inet.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_ETHERNETIF_DEBUG
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bool "Enable debugging in ethernetif.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_IP_DEBUG
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bool "Enable debugging for IP"
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depends on LWIP_DEBUG
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default n
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config LWIP_IP_REASS_DEBUG
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bool "Enable debugging in ip_frag.c for both frag & reass"
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depends on LWIP_DEBUG
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default n
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config LWIP_RAW_DEBUG
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bool "Enable debugging in raw.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_MEM_DEBUG
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bool "Enable debugging in mem.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_MEMP_DEBUG
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bool "Enable debugging in memp.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_SYS_DEBUG
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bool "Enable debugging in sys.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_TIMERS_DEBUG
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bool "Enable debugging in timers.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_TCP_DEBUG
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bool "Enable debugging for TCP"
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depends on LWIP_DEBUG
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default n
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config LWIP_TCP_INPUT_DEBUG
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bool "Enable debugging in tcp_in.c for incoming debug"
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depends on LWIP_DEBUG
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default n
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config LWIP_TCP_FR_DEBUG
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bool "Enable debugging in tcp_in.c for fast retransmit"
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depends on LWIP_DEBUG
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default n
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config LWIP_TCP_RTO_DEBUG
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bool "Enable debugging in TCP for retransmit"
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depends on LWIP_DEBUG
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default n
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config LWIP_TCP_CWND_DEBUG
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bool "Enable debugging for TCP congestion window"
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depends on LWIP_DEBUG
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default n
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config LWIP_TCP_WND_DEBUG
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bool "Enable debugging in tcp_in.c for window updating"
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depends on LWIP_DEBUG
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default n
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config LWIP_TCP_OUTPUT_DEBUG
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bool "Enable debugging in tcp_out.c output functions"
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depends on LWIP_DEBUG
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default n
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config LWIP_TCP_RST_DEBUG
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bool "Enable debugging for TCP with the RST message"
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depends on LWIP_DEBUG
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default n
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config LWIP_TCP_QLEN_DEBUG
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bool "Enable debugging for TCP queue lengths"
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depends on LWIP_DEBUG
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default n
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config LWIP_UDP_DEBUG
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bool "Enable debugging in UDP"
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depends on LWIP_DEBUG
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default n
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config LWIP_TCPIP_DEBUG
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bool "Enable debugging in tcpip.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_SLIP_DEBUG
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bool "Enable debugging in slipif.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_DHCP_DEBUG
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bool "Enable debugging in dhcp.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_DHCP_SERVER_DEBUG
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bool "Enable debugging in dhcpserver.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_AUTOIP_DEBUG
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bool "Enable debugging in autoip.c"
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depends on LWIP_DEBUG
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default n
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config LWIP_DNS_DEBUG
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bool "Enable debugging for DNS"
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depends on LWIP_DEBUG
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default n
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config LWIP_IP6_DEBUG
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bool "Enable debugging for IPv6"
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depends on LWIP_DEBUG
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default n
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config LWIP_SNTP_DEBUG
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bool "Enable debugging for SNTP."
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depends on LWIP_DEBUG
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default n
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config LWIP_THREAD_SAFE_DEBUG
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bool "Enable debugging for LWIP thread safety."
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depends on LWIP_DEBUG
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default n
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endmenu
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