On Mon, Aug 14, 2023 at 07:32:43PM +0600, Maxim Uvarov wrote:
> Implement function for dhcp command with lwIP variant. Usage and output is
> the same as the original command. This code called by compatibility code
> between U-Boot and lwIP.
Same as the dns command
>
> Signed-off-by: Maxim Uvarov <maxim.uva...@linaro.org>
> ---
> include/net/lwip.h | 10 +++++++
> net/lwip/Makefile | 1 +
> net/lwip/apps/dhcp/lwip-dhcp.c | 51 ++++++++++++++++++++++++++++++++++
> 3 files changed, 62 insertions(+)
> create mode 100644 net/lwip/apps/dhcp/lwip-dhcp.c
>
> diff --git a/include/net/lwip.h b/include/net/lwip.h
> index c83b5c8231..2f035280eb 100644
> --- a/include/net/lwip.h
> +++ b/include/net/lwip.h
> @@ -15,3 +15,13 @@ int do_lwip_dns(struct cmd_tbl *cmdtp, int flag, int argc,
> * Other value < 0, if error
> */
> int ulwip_dns(char *name, char *varname);
> +
> +/*
> +* This function creates the DHCP request to obtain IP address. If DHCP server
Sphinx needs something more, please check the existing functions
> +* returns file name, this file will be downloaded with tftp. After this
> +* function you need to invoke the polling loop to process network
> communication.
> +*
> +* Return: 0 if success
> +* Other value < 0, if error
> +*/
> +int ulwip_dhcp(void);
> diff --git a/net/lwip/Makefile b/net/lwip/Makefile
> index 6d2c00605b..59323fb325 100644
> --- a/net/lwip/Makefile
> +
> +static struct dhcp dhcp;
> +
> +static int ulwip_dhcp_tmo(void)
> +{
> + switch (dhcp.state) {
> + case DHCP_STATE_BOUND:
> + env_set("bootfile", dhcp.boot_file_name);
> + env_set("ipaddr", ip4addr_ntoa(&dhcp.offered_ip_addr));
> + env_set("netmask", ip4addr_ntoa(&dhcp.offered_sn_mask));
> + env_set("serverip", ip4addr_ntoa(&dhcp.server_ip_addr));
> + printf("DHCP client bound to address %s\n",
> ip4addr_ntoa(&dhcp.offered_ip_addr));
> + break;
> + default:
> + return -1;
> + }
> +
> + return 0;
> +}
> +
> +int ulwip_dhcp(void)
> +{
> + int err;
> + struct netif *netif;
> +
> + ulwip_set_tmo(ulwip_dhcp_tmo);
> + netif = netif_get_by_index(1);
What's (1)?
> +
> + if (!netif_get_client_data(netif, LWIP_NETIF_CLIENT_DATA_INDEX_DHCP))
> + dhcp_set_struct(netif, &dhcp);
> +
> + err = dhcp_start(netif);
> + if (err)
> + printf("dhcp_start error %d\n", err);
> +
> + return err;
> +}
> --
> 2.30.2
>
Thanks
/Ilias
