On Mon, 1 Sep 2025 12:37:14 +0000 Brett A C Sheffield wrote:
> +static int setup(void)
> +{
> + struct ifreq ifr = {
> + .ifr_name = "lo"
> + };
> + int fd = -1;
> + int ctl;
> +
> + /* we need to set MTU, so do this in a namespace to play nicely */
> + if (unshare(CLONE_NEWNET) == -1)
> + error(KSFT_FAIL, errno, "unshare");
> +
> + ctl = socket(AF_LOCAL, SOCK_STREAM, 0);
> + if (ctl == -1)
> + error(KSFT_FAIL, errno, "socket");
> +
> + /* ensure MTU is smaller than what we plan to send */
> + ifr.ifr_mtu = MTU;
> + if (ioctl(ctl, SIOCSIFMTU, &ifr) == -1)
> + error(KSFT_FAIL, errno, "ioctl: set MTU");
> +
> + disable_dad("lo");
> + interface_up(ctl, &ifr);
> +
> + close(ctl);
> + return fd;
fd is unused here
--
pw-bot: cr
