Re: [PATCH v2 17/29] net: bootp: Fall back to BOOTP from DHCP when unit testing

[Heinrich Schuchardt]

Am 14. Oktober 2023 22:47:53 MESZ schrieb Sean Anderson <seanga2 at gmail.com>:
>If we sent a DHCP packet and get a BOOTP response from the server, we
>shouldn't try to send a DHCPREQUEST packet, since it won't be DHCPACKed.
>Transition straight to BIND. This is only enabled for UNIT_TEST to avoid
>bloat, since I suspect the number of BOOTP servers in the wild is
>vanishingly small.
>
>Signed-off-by: Sean Anderson <seanga2 at gmail.com>
>Reviewed-by: Simon Glass <sjg at chromium.org>
>---
>
>(no changes since v1)
>
> net/bootp.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
>diff --git a/net/bootp.c b/net/bootp.c
>index 2053cce88c6..7b0f45e18a9 100644
>--- a/net/bootp.c
>+++ b/net/bootp.c
>@@ -1073,6 +1073,11 @@ static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
> 			    CONFIG_SYS_BOOTFILE_PREFIX,
> 			    strlen(CONFIG_SYS_BOOTFILE_PREFIX)) == 0) {
> #endif	/* CONFIG_SYS_BOOTFILE_PREFIX */
>+			if (CONFIG_IS_ENABLED(UNIT_TEST) &&
>+			    dhcp_message_type((u8 *)bp->bp_vend) == -1) {

As written before, please, do not add unit test specific code paths.

Best regards

Heinrich

>+				debug("got BOOTP response; transitioning to BOUND\n");
>+				goto dhcp_got_bootp;
>+			}
> 			dhcp_packet_process_options(bp);
> 			if (CONFIG_IS_ENABLED(EFI_LOADER) &&
> 			    IS_ENABLED(CONFIG_NETDEVICES))
>@@ -1099,6 +1104,7 @@ static void dhcp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
> 		debug("DHCP State: REQUESTING\n");
> 
> 		if (dhcp_message_type((u8 *)bp->bp_vend) == DHCP_ACK) {
>+dhcp_got_bootp:
> 			dhcp_packet_process_options(bp);
> 			/* Store net params from reply */
> 			store_net_params(bp);