On 6/15/24 03:16, Stephen Hemminger wrote: > [You don't often get email from stephen@xxxxxxxxxxxxxxxxxx. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ] > >> + >> +/* get the src IP as it is done in devinet_ioctl() */ >> +static int hbl_en_get_src_ip(struct hbl_aux_dev *aux_dev, u32 port_idx, u32 *src_ip) >> +{ >> + struct hbl_en_port *port = HBL_EN_PORT(aux_dev, port_idx); >> + struct net_device *ndev = port->ndev; >> + struct in_device *in_dev; >> + struct in_ifaddr *ifa; >> + int rc = 0; >> + >> + /* for the case where no src IP is configured */ >> + *src_ip = 0; >> + >> + /* rtnl lock should be acquired in relevant flows before taking configuration lock */ >> + if (!rtnl_is_locked()) { >> + netdev_err(port->ndev, "Rtnl lock is not acquired, can't proceed\n"); >> + rc = -EFAULT; >> + goto out; >> + } >> + >> + in_dev = __in_dev_get_rtnl(ndev); >> + if (!in_dev) { >> + netdev_err(port->ndev, "Failed to get IPv4 struct\n"); >> + rc = -EFAULT; >> + goto out; >> + } >> + >> + ifa = rtnl_dereference(in_dev->ifa_list); >> + >> + while (ifa) { >> + if (!strcmp(ndev->name, ifa->ifa_label)) { >> + /* convert the BE to native and later on it will be >> + * written to the HW as LE in QPC_SET >> + */ >> + *src_ip = be32_to_cpu(ifa->ifa_local); >> + break; >> + } >> + ifa = rtnl_dereference(ifa->ifa_next); >> + } >> +out: >> + return rc; >> +} > > Does this device require IPv4? What about users and infrastructures that use IPv6 only? > IPv4 is legacy at this point. Gaudi2 supports IPv4 only.
