2 # Network configuration
6 bool "Networking support"
12 int "Milliseconds before trying ARP again"
16 bool "Enable generic udp framework"
18 Enable a generic udp framework that allows defining a custom
19 handler for udp protocol.
21 config BOOTP_SEND_HOSTNAME
22 bool "Send hostname to DNS server"
24 Some DHCP servers are capable to do a dynamic update of a
25 DNS server. To do this, they need the hostname of the DHCP
27 If CONFIG_BOOTP_SEND_HOSTNAME is defined, the content
28 of the "hostname" environment variable is passed as
29 option 12 to the DHCP server.
31 config NET_RANDOM_ETHADDR
32 bool "Random ethaddr if unset"
34 Selecting this will allow the Ethernet interface to function even
35 when the ethaddr variable for that interface is unset. In this case,
36 a random MAC address in the locally administered address space is
37 generated. It will be saved to the appropriate environment variable,
41 bool "NetConsole support"
43 Support the 'nc' input/output device for networked console.
44 See README.NetConsole for details.
47 bool "Support IP datagram reassembly"
49 Selecting this will enable IP datagram reassembly according
50 to the algorithm in RFC815.
53 int "Size of buffer used for IP datagram reassembly"
58 This defines the size of the statically allocated buffer
59 used for reassembly, and thus an upper bound for the size of
60 IP datagrams that can be received.
66 Default TFTP block size.
67 The MTU is typically 1500 for ethernet, so a TFTP block of
68 1468 (MTU minus eth.hdrs) provides a good throughput with
69 almost-MTU block sizes.
70 You can also activate CONFIG_IP_DEFRAG to set a larger block.
72 config TFTP_WINDOWSIZE
73 int "TFTP window size"
76 Default TFTP window size.
77 RFC7440 defines an optional window size of transmits,
78 before an ack response is required.
79 The default TFTP implementation implies a window size of 1.
82 bool "Track TFTP transfers based on file size option"
83 depends on CMD_TFTPBOOT
84 default y if (ARCH_OMAP2PLUS || ARCH_K3)
86 By default, TFTP progress bar is increased for each received UDP
87 frame, which can lead into long time being spent for sending
88 data over the UART. Enabling this option, TFTP queries the file
89 size from server, and if supported, limits the progress bar to
90 50 characters total which fits on single line.
92 config SERVERIP_FROM_PROXYDHCP
93 bool "Get serverip value from Proxy DHCP response"
95 Allows bootfile config to be fetched from Proxy DHCP server
96 while IP is obtained from main DHCP server.
98 config SERVERIP_FROM_PROXYDHCP_DELAY_MS
99 int "# of additional milliseconds to wait for ProxyDHCP response"
102 Amount of additional time to wait for ProxyDHCP response after
103 receiving response from main DHCP server. Has no effect if
104 SERVERIP_FROM_PROXYDHCP is false.
106 config KEEP_SERVERADDR
107 bool "Write the server's MAC address to 'serveraddr'"
110 Keeps the server's MAC address, in the env 'serveraddr'
111 for passing to bootargs (like Linux's netconsole option). If this is
112 enabled, when an ARP reply is received, the server's IP address is
116 bool "Check the UDP checksum"
119 Enable this to verify the checksum on UDP packets. If the checksum
120 is wrong then the packet is discussed and an error is shown, like
121 "UDP wrong checksum 29374a23 30ff3826"
123 config BOOTP_SERVERIP
124 bool "Use the 'serverip' env var for tftp, not bootp"
126 Enable this if the TFTP server will be the 'serverip' environment
127 variable, not the BOOTP server. This affects the operation of both