enable multiple queues (and interrupts on multiple cpus) on vmx(4).

im doing this with vmx(4) because it only exists on two archs (well,
one and a half archs really) so any impact is localised. most other
drivers i'm working on are enabled on 3 or 4 archs, and we're still
working on the interrupt code on those archs.

in the meantime vmx(4) can be used as a reference driver on how to
implement multiq. it shows the use of rss, toeplitz, intrmap, and
interrupts on multiple cpus. it's also a relatively simple device,
which makes it easier to understand the above features.

note that vmx(4) seems to advertise 25 msi-x vectors. it appears
that the intention is that 16 of these vectors are supposed to be
used for rx, 8 for tx, and 1 for events (eg, link up and down).
we're keeping things simple for now and using a maximum of 8 vectors
for both tx and rx, and one for events.

this is mostly based on work that jmatthew@ did, but it's simplified
now cos intrmap makes things easier.

1 files changed, 2 insertions, 2 deletions

diff --git a/sys/dev/pci/files.pci b/sys/dev/pci/files.pci
index 266f42b091f..6ca9c269c4a 100644
--- a/sys/dev/pci/files.pci
+++ b/sys/dev/pci/files.pci
@@ -1,4 +1,4 @@
-#	$OpenBSD: files.pci,v 1.346 2020/06/16 05:31:15 dlg Exp $
+#	$OpenBSD: files.pci,v 1.347 2020/06/17 06:36:17 dlg Exp $
 #	$NetBSD: files.pci,v 1.20 1996/09/24 17:47:15 christos Exp $
 #
 # Config file and device description for machine-independent PCI code.
@@ -718,7 +718,7 @@ attach	vic at pci
 file	dev/pci/if_vic.c		vic
 
 # VMware VMXNET3 virtual interface
-device	vmx: ether, ifnet, ifmedia, stoeplitz
+device	vmx: ether, ifnet, ifmedia, stoeplitz, intrmap
 attach	vmx at pci
 file	dev/pci/if_vmx.c		vmx