2 # Network configuration
6 bool "Networking support"
12 bool "Enable generic udp framework"
14 Enable a generic udp framework that allows defining a custom
15 handler for udp protocol.
17 config BOOTP_SEND_HOSTNAME
18 bool "Send hostname to DNS server"
20 Some DHCP servers are capable to do a dynamic update of a
21 DNS server. To do this, they need the hostname of the DHCP
23 If CONFIG_BOOTP_SEND_HOSTNAME is defined, the content
24 of the "hostname" environment variable is passed as
25 option 12 to the DHCP server.
27 config NET_RANDOM_ETHADDR
28 bool "Random ethaddr if unset"
30 Selecting this will allow the Ethernet interface to function even
31 when the ethaddr variable for that interface is unset. In this case,
32 a random MAC address in the locally administered address space is
33 generated. It will be saved to the appropriate environment variable,
37 bool "NetConsole support"
39 Support the 'nc' input/output device for networked console.
40 See README.NetConsole for details.
43 bool "Support IP datagram reassembly"
45 Selecting this will enable IP datagram reassembly according
46 to the algorithm in RFC815.
49 int "Size of buffer used for IP datagram reassembly"
54 This defines the size of the statically allocated buffer
55 used for reassembly, and thus an upper bound for the size of
56 IP datagrams that can be received.
62 Default TFTP block size.
63 The MTU is typically 1500 for ethernet, so a TFTP block of
64 1468 (MTU minus eth.hdrs) provides a good throughput with
65 almost-MTU block sizes.
66 You can also activate CONFIG_IP_DEFRAG to set a larger block.
68 config TFTP_WINDOWSIZE
69 int "TFTP window size"
72 Default TFTP window size.
73 RFC7440 defines an optional window size of transmits,
74 before an ack response is required.
75 The default TFTP implementation implies a window size of 1.
78 bool "Track TFTP transfers based on file size option"
79 depends on CMD_TFTPBOOT
80 default y if (ARCH_OMAP2PLUS || ARCH_K3)
82 By default, TFTP progress bar is increased for each received UDP
83 frame, which can lead into long time being spent for sending
84 data over the UART. Enabling this option, TFTP queries the file
85 size from server, and if supported, limits the progress bar to
86 50 characters total which fits on single line.
88 config SERVERIP_FROM_PROXYDHCP
89 bool "Get serverip value from Proxy DHCP response"
91 Allows bootfile config to be fetched from Proxy DHCP server
92 while IP is obtained from main DHCP server.
94 config SERVERIP_FROM_PROXYDHCP_DELAY_MS
95 int "# of additional milliseconds to wait for ProxyDHCP response"
98 Amount of additional time to wait for ProxyDHCP response after
99 receiving response from main DHCP server. Has no effect if
100 SERVERIP_FROM_PROXYDHCP is false.
102 config KEEP_SERVERADDR
103 bool "Write the server's MAC address to 'serveraddr'"
106 Keeps the server's MAC address, in the env 'serveraddr'
107 for passing to bootargs (like Linux's netconsole option). If this is
108 enabled, when an ARP reply is received, the server's IP address is
112 bool "Check the UDP checksum"
115 Enable this to verify the checksum on UDP packets. If the checksum
116 is wrong then the packet is discussed and an error is shown, like
117 "UDP wrong checksum 29374a23 30ff3826"
119 config BOOTP_SERVERIP
120 bool "Use the 'serverip' env var for tftp, not bootp"
122 Enable this if the TFTP server will be the 'serverip' environment
123 variable, not the BOOTP server. This affects the operation of both