4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright (c) 2014, Joyent, Inc.  All rights reserved.
  25  */
  26 
  27 /*
  28  * MAC Services Module
  29  *
  30  * The GLDv3 framework locking -  The MAC layer
  31  * --------------------------------------------
  32  *
  33  * The MAC layer is central to the GLD framework and can provide the locking
  34  * framework needed for itself and for the use of MAC clients. MAC end points
  35  * are fairly disjoint and don't share a lot of state. So a coarse grained
  36  * multi-threading scheme is to single thread all create/modify/delete or set
  37  * type of control operations on a per mac end point while allowing data threads
  38  * concurrently.
  39  *
  40  * Control operations (set) that modify a mac end point are always serialized on
  41  * a per mac end point basis, We have at most 1 such thread per mac end point
  42  * at a time.
  43  *
  44  * All other operations that are not serialized are essentially multi-threaded.

1660         return (info->mri_stat(info->mri_driver, stat, val));
1661 }
1662 
1663 /*
1664  * Private function that is only used by aggr to send packets through
1665  * a port/Tx ring. Since aggr exposes a pseudo Tx ring even for ports
1666  * that does not expose Tx rings, aggr_ring_tx() entry point needs
1667  * access to mac_impl_t to send packets through m_tx() entry point.
1668  * It accomplishes this by calling mac_hwring_send_priv() function.
1669  */
1670 mblk_t *
1671 mac_hwring_send_priv(mac_client_handle_t mch, mac_ring_handle_t rh, mblk_t *mp)
1672 {
1673         mac_client_impl_t *mcip = (mac_client_impl_t *)mch;
1674         mac_impl_t *mip = mcip->mci_mip;
1675 
1676         MAC_TX(mip, rh, mp, mcip);
1677         return (mp);
1678 }
1679 































1680 int
1681 mac_hwgroup_addmac(mac_group_handle_t gh, const uint8_t *addr)
1682 {
1683         mac_group_t *group = (mac_group_t *)gh;
1684 
1685         return (mac_group_addmac(group, addr));
1686 }
1687 
1688 int
1689 mac_hwgroup_remmac(mac_group_handle_t gh, const uint8_t *addr)
1690 {
1691         mac_group_t *group = (mac_group_t *)gh;
1692 
1693         return (mac_group_remmac(group, addr));
1694 }
1695 
1696 /*
1697  * Set the RX group to be shared/reserved. Note that the group must be
1698  * started/stopped outside of this function.
1699  */

   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright 2015 Joyent, Inc.
  25  */
  26 
  27 /*
  28  * MAC Services Module
  29  *
  30  * The GLDv3 framework locking -  The MAC layer
  31  * --------------------------------------------
  32  *
  33  * The MAC layer is central to the GLD framework and can provide the locking
  34  * framework needed for itself and for the use of MAC clients. MAC end points
  35  * are fairly disjoint and don't share a lot of state. So a coarse grained
  36  * multi-threading scheme is to single thread all create/modify/delete or set
  37  * type of control operations on a per mac end point while allowing data threads
  38  * concurrently.
  39  *
  40  * Control operations (set) that modify a mac end point are always serialized on
  41  * a per mac end point basis, We have at most 1 such thread per mac end point
  42  * at a time.
  43  *
  44  * All other operations that are not serialized are essentially multi-threaded.

1660         return (info->mri_stat(info->mri_driver, stat, val));
1661 }
1662 
1663 /*
1664  * Private function that is only used by aggr to send packets through
1665  * a port/Tx ring. Since aggr exposes a pseudo Tx ring even for ports
1666  * that does not expose Tx rings, aggr_ring_tx() entry point needs
1667  * access to mac_impl_t to send packets through m_tx() entry point.
1668  * It accomplishes this by calling mac_hwring_send_priv() function.
1669  */
1670 mblk_t *
1671 mac_hwring_send_priv(mac_client_handle_t mch, mac_ring_handle_t rh, mblk_t *mp)
1672 {
1673         mac_client_impl_t *mcip = (mac_client_impl_t *)mch;
1674         mac_impl_t *mip = mcip->mci_mip;
1675 
1676         MAC_TX(mip, rh, mp, mcip);
1677         return (mp);
1678 }
1679 
1680 /*
1681  * Private function that is only used by aggr to update the default transmission
1682  * ring. Because aggr exposes a pseudo Tx ring even for ports that may
1683  * temporarily be down, it may need to update the default ring that is used by
1684  * MAC such that it refers to a link that can actively be used to send traffic.
1685  * Note that this is different from the case where the port has been removed
1686  * from the group. In those cases, all of the rings will be torn down because
1687  * the ring will no longer exist. It's important to give aggr a case where the
1688  * rings can still exist such that it may be able to continue to send LACP PDUs
1689  * to potentially restore the link.
1690  *
1691  * Finally, we explicitly don't do anything if the ring hasn't been enabled yet.
1692  * This is to help out aggr which doesn't really know the internal state that
1693  * MAC does about the rings and can't know that it's not quite ready for use
1694  * yet.
1695  */
1696 void
1697 mac_hwring_set_default(mac_handle_t mh, mac_ring_handle_t rh)
1698 {
1699         mac_impl_t *mip = (mac_impl_t *)mh;
1700         mac_ring_t *ring = (mac_ring_t *)rh;
1701 
1702         ASSERT(MAC_PERIM_HELD(mh));
1703         VERIFY(mip->mi_state_flags & MIS_IS_AGGR);
1704 
1705         if (ring->mr_state != MR_INUSE)
1706                 return;
1707 
1708         mip->mi_default_tx_ring = rh;
1709 }
1710 
1711 int
1712 mac_hwgroup_addmac(mac_group_handle_t gh, const uint8_t *addr)
1713 {
1714         mac_group_t *group = (mac_group_t *)gh;
1715 
1716         return (mac_group_addmac(group, addr));
1717 }
1718 
1719 int
1720 mac_hwgroup_remmac(mac_group_handle_t gh, const uint8_t *addr)
1721 {
1722         mac_group_t *group = (mac_group_t *)gh;
1723 
1724         return (mac_group_remmac(group, addr));
1725 }
1726 
1727 /*
1728  * Set the RX group to be shared/reserved. Note that the group must be
1729  * started/stopped outside of this function.
1730  */