Hi Heinrich,

On 4/28/25 11:24, Jerome Forissier wrote:
> When there is no reply from the TFTP server, do_tftpb() should
> eventually time out. Add a 10 second timer for that purpose.
> 
> Reported-by: Heinrich Schuchardt <heinrich.schucha...@canonical.com>
> Signed-off-by: Jerome Forissier <jerome.foriss...@linaro.org>
> ---
> 
>  net/lwip/tftp.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)

Does this fix the stalling issue you mentioned in [1]?

[1] https://lists.denx.de/pipermail/u-boot/2025-April/587583.html

Thanks,
-- 
Jerome

> 
> diff --git a/net/lwip/tftp.c b/net/lwip/tftp.c
> index 4f9b2049187..4f88924e47e 100644
> --- a/net/lwip/tftp.c
> +++ b/net/lwip/tftp.c
> @@ -15,6 +15,8 @@
>  #include <time.h>
>  
>  #define PROGRESS_PRINT_STEP_BYTES (10 * 1024)
> +/* Max time to wait for first data packet from server */
> +#define NO_RSP_TIMEOUT_MS 10000
>  
>  enum done_state {
>       NOT_DONE = 0,
> @@ -106,6 +108,17 @@ static const struct tftp_context tftp_context = {
>       tftp_error
>  };
>  
> +static void no_response(void *arg)
> +{
> +     struct tftp_ctx *ctx = (struct tftp_ctx *)arg;
> +
> +     if (ctx->size)
> +             return;
> +
> +     printf("Timeout!\n");
> +     ctx->done = FAILURE;
> +}
> +
>  static int tftp_loop(struct udevice *udev, ulong addr, char *fname,
>                    ip_addr_t srvip, uint16_t srvport)
>  {
> @@ -150,6 +163,7 @@ static int tftp_loop(struct udevice *udev, ulong addr, 
> char *fname,
>               return -1;
>       }
>  
> +     sys_timeout(NO_RSP_TIMEOUT_MS, no_response, &ctx);
>       while (!ctx.done) {
>               net_lwip_rx(udev, netif);
>               sys_check_timeouts();
> @@ -159,6 +173,7 @@ static int tftp_loop(struct udevice *udev, ulong addr, 
> char *fname,
>                       break;
>               }
>       }
> +     sys_untimeout(no_response, (void *)&ctx);
>  
>       tftp_cleanup();
>  

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