Module Name: src
Committed By: knakahara
Date: Fri Sep 16 03:05:52 UTC 2022
Modified Files:
src/sys/dev/pci: files.pci
src/sys/dev/pci/ixgbe: ix_txrx.c ixgbe_netbsd.h
Log Message:
ixg(4) add an option for Tx to use deferred softint regardless of whether can
get txq lock or not.
That imporve (7%) and stabilize throughput. But that can cause
latency degradation, so off by default.
ok'ed by msaitoh@n.o.
To generate a diff of this commit:
cvs rdiff -u -r1.441 -r1.442 src/sys/dev/pci/files.pci
cvs rdiff -u -r1.99 -r1.100 src/sys/dev/pci/ixgbe/ix_txrx.c
cvs rdiff -u -r1.16 -r1.17 src/sys/dev/pci/ixgbe/ixgbe_netbsd.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/dev/pci/files.pci
diff -u src/sys/dev/pci/files.pci:1.441 src/sys/dev/pci/files.pci:1.442
--- src/sys/dev/pci/files.pci:1.441 Wed Sep 7 06:37:04 2022
+++ src/sys/dev/pci/files.pci Fri Sep 16 03:05:51 2022
@@ -1,4 +1,4 @@
-# $NetBSD: files.pci,v 1.441 2022/09/07 06:37:04 martin Exp $
+# $NetBSD: files.pci,v 1.442 2022/09/16 03:05:51 knakahara Exp $
#
# Config file and device description for machine-independent PCI code.
# Included by ports that need it. Requires that the SCSI files be
@@ -665,6 +665,7 @@ file dev/pci/ixgbe/ixgbe_phy.c ixg | ixv
file dev/pci/ixgbe/ixgbe_vf.c ixg | ixv
file dev/pci/ixgbe/if_bypass.c ixg | ixv
file dev/pci/ixgbe/if_fdir.c ixg | ixv
+defflag opt_if_ixg.h IXGBE_ALWAYS_TXDEFER
# This appears to be the driver for virtual instances of i82599.
device ixv: ether, ifnet, arp, mii, mii_phy
Index: src/sys/dev/pci/ixgbe/ix_txrx.c
diff -u src/sys/dev/pci/ixgbe/ix_txrx.c:1.99 src/sys/dev/pci/ixgbe/ix_txrx.c:1.100
--- src/sys/dev/pci/ixgbe/ix_txrx.c:1.99 Sun Aug 7 09:37:47 2022
+++ src/sys/dev/pci/ixgbe/ix_txrx.c Fri Sep 16 03:05:51 2022
@@ -1,4 +1,4 @@
-/* $NetBSD: ix_txrx.c,v 1.99 2022/08/07 09:37:47 andvar Exp $ */
+/* $NetBSD: ix_txrx.c,v 1.100 2022/09/16 03:05:51 knakahara Exp $ */
/******************************************************************************
@@ -64,7 +64,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ix_txrx.c,v 1.99 2022/08/07 09:37:47 andvar Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ix_txrx.c,v 1.100 2022/09/16 03:05:51 knakahara Exp $");
#include "opt_inet.h"
#include "opt_inet6.h"
@@ -250,6 +250,11 @@ ixgbe_mq_start(struct ifnet *ifp, struct
IXGBE_EVC_ADD(&txr->pcq_drops, 1);
return ENOBUFS;
}
+#ifdef IXGBE_ALWAYS_TXDEFER
+ kpreempt_disable();
+ softint_schedule(txr->txr_si);
+ kpreempt_enable();
+#else
if (IXGBE_TX_TRYLOCK(txr)) {
ixgbe_mq_start_locked(ifp, txr);
IXGBE_TX_UNLOCK(txr);
@@ -279,6 +284,7 @@ ixgbe_mq_start(struct ifnet *ifp, struct
kpreempt_enable();
}
}
+#endif
return (0);
} /* ixgbe_mq_start */
Index: src/sys/dev/pci/ixgbe/ixgbe_netbsd.h
diff -u src/sys/dev/pci/ixgbe/ixgbe_netbsd.h:1.16 src/sys/dev/pci/ixgbe/ixgbe_netbsd.h:1.17
--- src/sys/dev/pci/ixgbe/ixgbe_netbsd.h:1.16 Tue Jan 25 03:40:29 2022
+++ src/sys/dev/pci/ixgbe/ixgbe_netbsd.h Fri Sep 16 03:05:51 2022
@@ -1,4 +1,4 @@
-/* $NetBSD: ixgbe_netbsd.h,v 1.16 2022/01/25 03:40:29 msaitoh Exp $ */
+/* $NetBSD: ixgbe_netbsd.h,v 1.17 2022/09/16 03:05:51 knakahara Exp $ */
/*
* Copyright (c) 2011 The NetBSD Foundation, Inc.
* All rights reserved.
@@ -31,6 +31,10 @@
#ifndef _IXGBE_NETBSD_H
#define _IXGBE_NETBSD_H
+#ifdef _KERNEL_OPT
+#include "opt_if_ixg.h"
+#endif
+
#if 0 /* Enable this if you don't want to use TX multiqueue function */
#define IXGBE_LEGACY_TX 1
#endif
