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net: lwip: add DHCP support and dhcp commmand

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Add what it takes to enable NETDEVICES with NET_LWIP and enable DHCP as
well as the dhcp command. CMD_TFTPBOOT is selected by BOOTMETH_EFI due
to this code having an implicit dependency on do_tftpb().

Note that PXE is likely non-fonctional with NET_LWIP (or at least not
100% functional) because DHCP option 209 is not supported by the lwIP
library. Therefore, BOOTP_PXE_DHCP_OPTION cannot be enabled.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Tested-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
This commit is contained in:
Jerome Forissier
2024-10-16 12:04:03 +02:00
committed by Tom Rini
parent 1c41a7afaa
commit 98ad145db6
21 changed files with 573 additions and 62 deletions
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3
include/net-common.h
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@@ -118,6 +118,9 @@ extern int net_restart_wrap; /* Tried all network devices */
extern uchar *net_rx_packets[PKTBUFSRX]; /* Receive packets */
extern const u8 net_bcast_ethaddr[ARP_HLEN]; /* Ethernet broadcast address */
extern char net_boot_file_name[1024];/* Boot File name */
extern struct in_addr net_ip; /* Our IP addr (0 = unknown) */
/* Indicates whether the pxe path prefix / config file was specified in dhcp option */
extern char *pxelinux_configfile;
/**
* compute_ip_checksum() - Compute IP checksum