if NET
+config ARP_TIMEOUT
+ int "Milliseconds before trying ARP again"
+ default 5000
+
+config NET_RETRY_COUNT
+ int "Number of timeouts before giving up"
+ default 5
+ help
+ This variable defines the number of retries for network operations
+ like ARP, RARP, TFTP, or BOOTP before giving up the operation.
+
config PROT_UDP
bool "Enable generic udp framework"
help
Enable a generic udp framework that allows defining a custom
handler for udp protocol.
+config BOOTDEV_ETH
+ bool "Enable bootdev for ethernet"
+ depends on BOOTSTD
+ default y
+ help
+ Provide a bootdev for ethernet so that is it possible to boot
+ an operationg system over the network, using the PXE (Preboot
+ Execution Environment) protocol.
+
config BOOTP_SEND_HOSTNAME
bool "Send hostname to DNS server"
help
used for reassembly, and thus an upper bound for the size of
IP datagrams that can be received.
+config SYS_FAULT_ECHO_LINK_DOWN
+ bool "Echo the inverted Ethernet link state to the fault LED"
+ help
+ Echo the inverted Ethernet link state to the fault LED. Note, if
+ this option is active, then CONFIG_SYS_FAULT_MII_ADDR also needs to
+ be configured.
+
config TFTP_BLOCKSIZE
int "TFTP block size"
default 1468
almost-MTU block sizes.
You can also activate CONFIG_IP_DEFRAG to set a larger block.
+config TFTP_PORT
+ bool "Set TFTP UDP source/destination ports via the environment"
+ help
+ If this is defined, the environment variable tftpsrcp is used to
+ supply the TFTP UDP source port value. If tftpsrcp isn't defined,
+ the normal pseudo-random port number generator is used.
+
+ Also, the environment variable tftpdstp is used to supply the TFTP
+ UDP destination port value. If tftpdstp isn't defined, the normal
+ port 69 is used.
+
+ The purpose for tftpsrcp is to allow a TFTP server to blindly start
+ the TFTP transfer using the pre-configured target IP address and UDP
+ port. This has the effect of "punching through" the (Windows XP)
+ firewall, allowing the remainder of the TFTP transfer to proceed
+ normally. A better solution is to properly configure the firewall,
+ but sometimes that is not allowed.
+
config TFTP_WINDOWSIZE
int "TFTP window size"
default 1
enabled, when an ARP reply is received, the server's IP address is
written there.
+config UDP_CHECKSUM
+ bool "Check the UDP checksum"
+ default y if SANDBOX
+ help
+ Enable this to verify the checksum on UDP packets. If the checksum
+ is wrong then the packet is discarded and an error is shown, like
+ "UDP wrong checksum 29374a23 30ff3826"
+
+config BOOTP_SERVERIP
+ bool "Use the 'serverip' env var for tftp, not bootp"
+ help
+ Enable this if the TFTP server will be the 'serverip' environment
+ variable, not the BOOTP server. This affects the operation of both
+ bootp and tftp.
+
endif # if NET
+
+config SYS_RX_ETH_BUFFER
+ int "Number of receive packet buffers"
+ default 4
+ help
+ Defines the number of Ethernet receive buffers. On some Ethernet
+ controllers it is recommended to set this value to 8 or even higher,
+ since all buffers can be full shortly after enabling the interface on
+ high Ethernet traffic.