Author: jfv
Date: Wed Apr  3 23:39:54 2013
New Revision: 249074
URL: http://svnweb.freebsd.org/changeset/base/249074

Log:
  Correct the multicast handling in the E1000 drivers as was
  done in ixgbe, thanks to Mike Karels for this fix. When exiting
  promiscuous mode MPE bit was being unconditionally cleared, this
  should not be done if we are in MAX multicast groups.

Modified:
  head/sys/dev/e1000/if_em.c
  head/sys/dev/e1000/if_igb.c
  head/sys/dev/e1000/if_lem.c

Modified: head/sys/dev/e1000/if_em.c
==============================================================================
--- head/sys/dev/e1000/if_em.c  Wed Apr  3 23:11:15 2013        (r249073)
+++ head/sys/dev/e1000/if_em.c  Wed Apr  3 23:39:54 2013        (r249074)
@@ -94,7 +94,7 @@ int   em_display_debug_stats = 0;
 /*********************************************************************
  *  Driver version:
  *********************************************************************/
-char em_driver_version[] = "7.3.7";
+char em_driver_version[] = "7.3.8";
 
 /*********************************************************************
  *  PCI Device ID Table
@@ -2133,12 +2133,37 @@ em_set_promisc(struct adapter *adapter)
 static void
 em_disable_promisc(struct adapter *adapter)
 {
-       u32     reg_rctl;
+       struct ifnet    *ifp = adapter->ifp;
+       u32             reg_rctl;
+       int             mcnt = 0;
 
        reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL);
-
        reg_rctl &=  (~E1000_RCTL_UPE);
-       reg_rctl &=  (~E1000_RCTL_MPE);
+       if (ifp->if_flags & IFF_ALLMULTI)
+               mcnt = MAX_NUM_MULTICAST_ADDRESSES;
+       else {
+               struct  ifmultiaddr *ifma;
+#if __FreeBSD_version < 800000
+               IF_ADDR_LOCK(ifp);
+#else   
+               if_maddr_rlock(ifp);
+#endif
+               TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
+                       if (ifma->ifma_addr->sa_family != AF_LINK)
+                               continue;
+                       if (mcnt == MAX_NUM_MULTICAST_ADDRESSES)
+                               break;
+                       mcnt++;
+               }
+#if __FreeBSD_version < 800000
+               IF_ADDR_UNLOCK(ifp);
+#else
+               if_maddr_runlock(ifp);
+#endif
+       }
+       /* Don't disable if in MAX groups */
+       if (mcnt < MAX_NUM_MULTICAST_ADDRESSES)
+               reg_rctl &=  (~E1000_RCTL_MPE);
        reg_rctl &=  (~E1000_RCTL_SBP);
        E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl);
 }

Modified: head/sys/dev/e1000/if_igb.c
==============================================================================
--- head/sys/dev/e1000/if_igb.c Wed Apr  3 23:11:15 2013        (r249073)
+++ head/sys/dev/e1000/if_igb.c Wed Apr  3 23:39:54 2013        (r249074)
@@ -100,7 +100,7 @@ int igb_display_debug_stats = 0;
 /*********************************************************************
  *  Driver version:
  *********************************************************************/
-char igb_driver_version[] = "version - 2.3.9";
+char igb_driver_version[] = "version - 2.3.10";
 
 
 /*********************************************************************
@@ -374,9 +374,9 @@ SYSCTL_INT(_hw_igb, OID_AUTO, header_spl
     "Enable receive mbuf header split");
 
 /*
-** This will autoconfigure based on
-** the number of CPUs and max supported MSI-X messages
-** if left at 0.
+** This will autoconfigure based on the
+** number of CPUs and max supported
+** MSIX messages if left at 0.
 */
 static int igb_num_queues = 0;
 TUNABLE_INT("hw.igb.num_queues", &igb_num_queues);
@@ -2096,7 +2096,9 @@ static void
 igb_disable_promisc(struct adapter *adapter)
 {
        struct e1000_hw *hw = &adapter->hw;
+       struct ifnet    *ifp = adapter->ifp;
        u32             reg;
+       int             mcnt = 0;
 
        if (adapter->vf_ifp) {
                e1000_promisc_set_vf(hw, e1000_promisc_disabled);
@@ -2104,7 +2106,31 @@ igb_disable_promisc(struct adapter *adap
        }
        reg = E1000_READ_REG(hw, E1000_RCTL);
        reg &=  (~E1000_RCTL_UPE);
-       reg &=  (~E1000_RCTL_MPE);
+       if (ifp->if_flags & IFF_ALLMULTI)
+               mcnt = MAX_NUM_MULTICAST_ADDRESSES;
+       else {
+               struct  ifmultiaddr *ifma;
+#if __FreeBSD_version < 800000
+               IF_ADDR_LOCK(ifp);
+#else   
+               if_maddr_rlock(ifp);
+#endif
+               TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
+                       if (ifma->ifma_addr->sa_family != AF_LINK)
+                               continue;
+                       if (mcnt == MAX_NUM_MULTICAST_ADDRESSES)
+                               break;
+                       mcnt++;
+               }
+#if __FreeBSD_version < 800000
+               IF_ADDR_UNLOCK(ifp);
+#else
+               if_maddr_runlock(ifp);
+#endif
+       }
+       /* Don't disable if in MAX groups */
+       if (mcnt < MAX_NUM_MULTICAST_ADDRESSES)
+               reg &=  (~E1000_RCTL_MPE);
        E1000_WRITE_REG(hw, E1000_RCTL, reg);
 }
 

Modified: head/sys/dev/e1000/if_lem.c
==============================================================================
--- head/sys/dev/e1000/if_lem.c Wed Apr  3 23:11:15 2013        (r249073)
+++ head/sys/dev/e1000/if_lem.c Wed Apr  3 23:39:54 2013        (r249074)
@@ -85,7 +85,7 @@
 /*********************************************************************
  *  Legacy Em Driver version:
  *********************************************************************/
-char lem_driver_version[] = "1.0.5";
+char lem_driver_version[] = "1.0.6";
 
 /*********************************************************************
  *  PCI Device ID Table
@@ -1856,12 +1856,37 @@ lem_set_promisc(struct adapter *adapter)
 static void
 lem_disable_promisc(struct adapter *adapter)
 {
-       u32     reg_rctl;
+       struct ifnet    *ifp = adapter->ifp;
+       u32             reg_rctl;
+       int             mcnt = 0;
 
        reg_rctl = E1000_READ_REG(&adapter->hw, E1000_RCTL);
-
        reg_rctl &=  (~E1000_RCTL_UPE);
-       reg_rctl &=  (~E1000_RCTL_MPE);
+       if (ifp->if_flags & IFF_ALLMULTI)
+               mcnt = MAX_NUM_MULTICAST_ADDRESSES;
+       else {
+               struct  ifmultiaddr *ifma;
+#if __FreeBSD_version < 800000
+               IF_ADDR_LOCK(ifp);
+#else   
+               if_maddr_rlock(ifp);
+#endif
+               TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
+                       if (ifma->ifma_addr->sa_family != AF_LINK)
+                               continue;
+                       if (mcnt == MAX_NUM_MULTICAST_ADDRESSES)
+                               break;
+                       mcnt++;
+               }
+#if __FreeBSD_version < 800000
+               IF_ADDR_UNLOCK(ifp);
+#else
+               if_maddr_runlock(ifp);
+#endif
+       }
+       /* Don't disable if in MAX groups */
+       if (mcnt < MAX_NUM_MULTICAST_ADDRESSES)
+               reg_rctl &=  (~E1000_RCTL_MPE);
        reg_rctl &=  (~E1000_RCTL_SBP);
        E1000_WRITE_REG(&adapter->hw, E1000_RCTL, reg_rctl);
 }
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