[src/trunk]: src/sys/arch/x86/pci Fix vmx(4) MTU setting.

[knakahara <knakahara%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a491ca82b26d
branches:  trunk
changeset: 457740:a491ca82b26d
user:      knakahara <knakahara%NetBSD.org@localhost>
date:      Tue Jul 16 10:12:10 2019 +0000

description:
Fix vmx(4) MTU setting.

Advised by hikaru@n.o and msaitoh@n.o, thanks.

diffstat:

 sys/arch/x86/pci/if_vmx.c |  34 ++++++++++++++--------------------
 1 files changed, 14 insertions(+), 20 deletions(-)

diffs (71 lines):

diff -r f9e8333c4644 -r a491ca82b26d sys/arch/x86/pci/if_vmx.c
--- a/sys/arch/x86/pci/if_vmx.c Tue Jul 16 10:01:23 2019 +0000
+++ b/sys/arch/x86/pci/if_vmx.c Tue Jul 16 10:12:10 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_vmx.c,v 1.31 2019/07/16 10:01:23 knakahara Exp $    */
+/*     $NetBSD: if_vmx.c,v 1.32 2019/07/16 10:12:10 knakahara Exp $    */
 /*     $OpenBSD: if_vmx.c,v 1.16 2014/01/22 06:04:17 brad Exp $        */
 
 /*
@@ -19,7 +19,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_vmx.c,v 1.31 2019/07/16 10:01:23 knakahara Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_vmx.c,v 1.32 2019/07/16 10:12:10 knakahara Exp $");
 
 #include <sys/param.h>
 #include <sys/cpu.h>
@@ -372,7 +372,6 @@
 void vmxnet3_start(struct ifnet *);
 
 void vmxnet3_set_rxfilter(struct vmxnet3_softc *);
-int vmxnet3_change_mtu(struct vmxnet3_softc *, int);
 int vmxnet3_ioctl(struct ifnet *, u_long, void *);
 int vmxnet3_ifflags_cb(struct ethercom *);
 
@@ -2877,18 +2876,6 @@
 }
 
 int
-vmxnet3_change_mtu(struct vmxnet3_softc *sc, int mtu)
-{
-
-       if (mtu < VMXNET3_MIN_MTU || mtu > VMXNET3_MAX_MTU)
-               return EINVAL;
-
-       vmxnet3_init_locked(sc);
-
-       return 0;
-}
-
-int
 vmxnet3_ioctl(struct ifnet *ifp, u_long cmd, void *data)
 {
        struct vmxnet3_softc *sc = ifp->if_softc;
@@ -2896,13 +2883,20 @@
        int s, error = 0;
 
        switch (cmd) {
-       case SIOCSIFMTU:
-               if (ifp->if_mtu != ifr->ifr_mtu) {
-                       VMXNET3_CORE_LOCK(sc);
-                       error = vmxnet3_change_mtu(sc, ifr->ifr_mtu);
-                       VMXNET3_CORE_UNLOCK(sc);
+       case SIOCSIFMTU: {
+               int nmtu = ifr->ifr_mtu;
+
+               if (nmtu < VMXNET3_MIN_MTU || nmtu > VMXNET3_MAX_MTU) {
+                       error = EINVAL;
+                       break;
+               }
+               if (ifp->if_mtu != nmtu) {
+                       error = ether_ioctl(ifp, cmd, data);
+                       if (error == ENETRESET)
+                               error = vmxnet3_init(ifp);
                }
                break;
+       }
        case SIOCGIFDATA:
        case SIOCZIFDATA:
                ifp->if_ipackets = 0;