Re: kern/57830: Xennet devices don't work properly with other NetBSD10 clients

[Brian Marcotte <marcotte%panix.com@localhost>]

> ... in that dhcp works, but no other IP works ... And it has no problem
> with other kinds of guests: Netbsd93,92, Freebsd, and linux

This sounds exactly like my problem in port-xen/57743.

This makes me wonder if the correct file was successfully patched:

> I tried the suggested fix on file (renamed to xennetback_xenbus in RC2)
> and rebuilt GENERIC.

The file in question is still if_xennet_xenbus.c, not xennetback_xenbus.c.

If there is any doubt, you could change the attachment message to show
that the right file was patched.

--- if_xennet_xenbus.c.orig	2023-07-31 11:23:02.000000000 -0400
+++ if_xennet_xenbus.c	2024-01-09 02:15:04.307107315 -0500
@@ -273,7 +273,7 @@
 	bus_size_t maxsz;
 	int nsegs;
 
-	aprint_normal(": Xen Virtual Network Interface\n");
+	aprint_normal(": Xen Virtual Network Interface (patched)\n");
 	sc->sc_dev = self;
 
 	sc->sc_xbusd = xa->xa_xbusd;
@@ -1122,7 +1122,10 @@
 			if (m->m_pkthdr.csum_flags & XN_M_CSUM_SUPPORTED) {
 				txreq->flags |= NETTXF_csum_blank;
 			} else {
+// Workaround for PR port-xen/57743
+/*
 				txreq->flags |= NETTXF_data_validated;
+*/
 			}
 		}
 		if (multiseg && i < lastseg)



Thanks.

- Brian