Attachment 257869 Details for Bug 243712 – Patch for that feature

[patch] Patch for that feature

if_vxlan_clone.patch (text/plain), 1.01 KB, created by Mark Linimon on 2025-02-25 04:49:37 UTC

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Creator: Mark Linimon

Created: 2025-02-25 04:49:37 UTC

Size: 1.01 KB

patch

obsolete

>--- sys/net/if_vxlan.c	2019-11-19 13:57:56.046105000 +0200
>+++ sys/net/if_vxlan.c	2019-11-19 14:02:21.057692000 +0200
>@@ -2725,8 +2725,9 @@
> vxlan_clone_create(struct if_clone *ifc, int unit, caddr_t params)
> {
> 	struct vxlan_softc *sc;
>-	struct ifnet *ifp;
>+	struct ifnet *ifp, *ifpp;
> 	struct ifvxlanparam vxlp;
>+	const short r4hdrs = 100;	/* Reasonable standard offset for MTU from vxlandev iface */
> 	int error;
> 
> 	sc = malloc(sizeof(struct vxlan_softc), M_VXLAN, M_WAITOK | M_ZERO);
>@@ -2776,6 +2777,22 @@
> 
> 	ifp->if_baudrate = 0;
> 	ifp->if_hdrlen = 0;
>+
>+	if (vxlp.vxlp_with & VXLAN_PARAM_WITH_MULTICAST_IF) {
>+		ifpp = ifunit_ref(sc->vxl_mc_ifname);
>+		if (ifpp == NULL) {
>+			if_printf(sc->vxl_ifp, "multicast interface %s does "
>+			    "not exist\n", sc->vxl_mc_ifname);
>+			goto fail;
>+		}
>+		if (ifpp->if_mtu <= r4hdrs) {
>+			if_printf(sc->vxl_ifp, "multicast interface %s does "
>+			    "not have sufficient MTU\n", sc->vxl_mc_ifname);
>+			goto fail;
>+		}
>+
>+		ifp->if_mtu = ifpp->if_mtu - r4hdrs;
>+	}
> 
> 	return (0);
>

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Attachments on bug 243712: 211174 | 257869