[src/trunk]: src/sys/dev/pci Fix ixl(4) to set ENETRESET when IFF_ALLMULTI is...

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

details:   https://anonhg.NetBSD.org/src/rev/40b53506f739
branches:  trunk
changeset: 847366:40b53506f739
user:      yamaguchi <yamaguchi%NetBSD.org@localhost>
date:      Fri Dec 20 01:49:30 2019 +0000

description:
Fix ixl(4) to set ENETRESET when IFF_ALLMULTI is changed

diffstat:

 sys/dev/pci/if_ixl.c |  27 +++++++++++++++------------
 1 files changed, 15 insertions(+), 12 deletions(-)

diffs (100 lines):

diff -r 9f7ec7263934 -r 40b53506f739 sys/dev/pci/if_ixl.c
--- a/sys/dev/pci/if_ixl.c      Fri Dec 20 01:45:20 2019 +0000
+++ b/sys/dev/pci/if_ixl.c      Fri Dec 20 01:49:30 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_ixl.c,v 1.7 2019/12/20 01:45:20 yamaguchi Exp $     */
+/*     $NetBSD: if_ixl.c,v 1.8 2019/12/20 01:49:30 yamaguchi Exp $     */
 
 /*
  * Copyright (c) 2013-2015, Intel Corporation
@@ -1442,7 +1442,7 @@
        if (memcmp(addrlo, addrhi, ETHER_ADDR_LEN) != 0) {
                ixl_del_all_multiaddr(sc);
                SET(ifp->if_flags, IFF_ALLMULTI);
-               return 0;
+               return ENETRESET;
        }
 
        rv = ixl_add_macvlan(sc, addrlo, 0,
@@ -1451,25 +1451,25 @@
        if (rv == ENOSPC) {
                ixl_del_all_multiaddr(sc);
                SET(ifp->if_flags, IFF_ALLMULTI);
-               return 0;
+               return ENETRESET;
        }
 
        return rv;
 }
 
-static void
+static int
 ixl_del_multi(struct ixl_softc *sc, uint8_t *addrlo, uint8_t *addrhi)
 {
        struct ifnet *ifp = &sc->sc_ec.ec_if;
        struct ethercom *ec = &sc->sc_ec;
        struct ether_multi *enm, *enm_last;
        struct ether_multistep step;
-       int rv;
+       int error, rv = 0;
 
        if (!ISSET(ifp->if_flags, IFF_ALLMULTI)) {
                ixl_remove_macvlan(sc, addrlo, 0,
                    IXL_AQ_OP_REMOVE_MACVLAN_IGNORE_VLAN);
-               return;
+               return 0;
        }
 
        ETHER_LOCK(ec);
@@ -1477,16 +1477,15 @@
            ETHER_NEXT_MULTI(step, enm)) {
                if (memcmp(enm->enm_addrlo, enm->enm_addrhi,
                    ETHER_ADDR_LEN) != 0) {
-                       ETHER_UNLOCK(ec);
-                       return;
+                       goto out;
                }
        }
 
        for (ETHER_FIRST_MULTI(step, ec, enm); enm != NULL;
            ETHER_NEXT_MULTI(step, enm)) {
-               rv = ixl_add_macvlan(sc, enm->enm_addrlo, 0,
+               error = ixl_add_macvlan(sc, enm->enm_addrlo, 0,
                    IXL_AQ_OP_ADD_MACVLAN_IGNORE_VLAN);
-               if (rv != 0)
+               if (error != 0)
                        break;
        }
 
@@ -1502,9 +1501,12 @@
                }
        } else {
                CLR(ifp->if_flags, IFF_ALLMULTI);
+               rv = ENETRESET;
        }
 
+out:
        ETHER_UNLOCK(ec);
+       return rv;
 }
 
 static int
@@ -1527,7 +1529,8 @@
                        if (error != 0)
                                return error;
 
-                       if (ixl_add_multi(sc, addrlo, addrhi) != 0) {
+                       error = ixl_add_multi(sc, addrlo, addrhi);
+                       if (error != 0 && error != ENETRESET) {
                                ether_delmulti(sa, &sc->sc_ec);
                                error = EIO;
                        }
@@ -1541,7 +1544,7 @@
                        if (error != 0)
                                return error;
 
-                       ixl_del_multi(sc, addrlo, addrhi);
+                       error = ixl_del_multi(sc, addrlo, addrhi);
                }
                break;