/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* MAC Ring table functions. */ static void vsw_port_rx_cb(void *, mac_resource_handle_t, mblk_t *, boolean_t); static void vsw_if_rx_cb(void *, mac_resource_handle_t, mblk_t *, boolean_t); /* MAC layer routines */ static int vsw_set_port_hw_addr(vsw_port_t *port); static int vsw_set_if_hw_addr(vsw_t *vswp); static void vsw_unset_hw_addr(vsw_t *, vsw_port_t *, int); static int vsw_maccl_open(vsw_t *vswp, vsw_port_t *port, int type); static void vsw_maccl_close(vsw_t *vswp, vsw_port_t *port, int type); static void vsw_mac_multicast_add_all(vsw_t *vswp, vsw_port_t *portp, int type); static void vsw_mac_multicast_remove_all(vsw_t *vswp, vsw_port_t *portp, int type); static void vsw_mac_add_vlans(vsw_t *vswp, mac_client_handle_t mch, uint8_t *macaddr, uint16_t flags, vsw_vlanid_t *vids, int nvids); static void vsw_mac_remove_vlans(mac_client_handle_t mch, vsw_vlanid_t *vids, int nvids); static void vsw_mac_set_mtu(vsw_t *vswp, uint32_t mtu); /* Support functions */ int vsw_set_hw(vsw_t *, vsw_port_t *, int); void vsw_unset_hw(vsw_t *, vsw_port_t *, int); void vsw_reconfig_hw(vsw_t *); int vsw_mac_open(vsw_t *vswp); void vsw_mac_close(vsw_t *vswp); int vsw_mac_multicast_add(vsw_t *vswp, vsw_port_t *port, mcst_addr_t *mcst_p, int type); void vsw_mac_multicast_remove(vsw_t *vswp, vsw_port_t *port, mcst_addr_t *mcst_p, int type); int vsw_mac_client_init(vsw_t *vswp, vsw_port_t *port, int type); void vsw_mac_client_cleanup(vsw_t *vswp, vsw_port_t *port, int type); void vsw_mac_cleanup_ports(vsw_t *vswp); void vsw_unset_addrs(vsw_t *vswp); void vsw_set_addrs(vsw_t *vswp); mblk_t *vsw_tx_msg(vsw_t *, mblk_t *, int, vsw_port_t *); void vsw_publish_macaddr(vsw_t *vswp, vsw_port_t *portp); void vsw_port_mac_reconfig(vsw_port_t *portp, boolean_t update_vlans, uint16_t new_pvid, vsw_vlanid_t *new_vids, int new_nvids); void vsw_mac_port_reconfig_vlans(vsw_port_t *portp, uint16_t new_pvid, vsw_vlanid_t *new_vids, int new_nvids); void vsw_if_mac_reconfig(vsw_t *vswp, boolean_t update_vlans, uint16_t new_pvid, vsw_vlanid_t *new_vids, int new_nvids); /* * Functions imported from other files. */ extern int vsw_portsend(vsw_port_t *port, mblk_t *mp); extern void vsw_hio_stop_port(vsw_port_t *portp); extern void vsw_hio_port_reset(vsw_port_t *portp, boolean_t immediate); extern uint32_t vsw_publish_macaddr_count; extern uint32_t vsw_vlan_frame_untag(void *arg, int type, mblk_t **np, mblk_t **npt); static char mac_mtu_propname[] = "mtu"; /* * Tunables used in this file. */ extern int vsw_mac_open_retries; #define WRITE_MACCL_ENTER(vswp, port, type) \ (type == VSW_LOCALDEV) ? rw_enter(&vswp->maccl_rwlock, RW_WRITER) :\ rw_enter(&port->maccl_rwlock, RW_WRITER) #define READ_MACCL_ENTER(vswp, port, type) \ (type == VSW_LOCALDEV) ? rw_enter(&vswp->maccl_rwlock, RW_READER) :\ rw_enter(&port->maccl_rwlock, RW_READER) #define RW_MACCL_EXIT(vswp, port, type) \ (type == VSW_LOCALDEV) ? rw_exit(&vswp->maccl_rwlock) : \ rw_exit(&port->maccl_rwlock) /* * Locking strategy in this file is explained as follows: * - A global lock(vswp->mac_lock) is used to protect the * MAC calls that deal with entire device. That is, the * operations that deal with mac_handle which include * mac_open()/close() and mac_client_open(). * * - A per port/interface RW lock(maccl_rwlock) is used protect * the operations that deal with the MAC client. * * When both mac_lock and maccl_rwlock need to be held, the * mac_lock need be acquired first and then maccl_rwlock. That is, * mac_lock---->maccl_rwlock * * The 'mca_lock' that protects the mcast list is also acquired * within the context of maccl_rwlock. The hierarchy for this * one is as below: * maccl_rwlock---->mca_lock */ /* * Program unicast and multicast addresses of vsw interface and the ports * into the network device. */ void vsw_set_addrs(vsw_t *vswp) { vsw_port_list_t *plist = &vswp->plist; vsw_port_t *port; int rv; READ_ENTER(&vswp->if_lockrw); if (vswp->if_state & VSW_IF_UP) { /* Open a mac client and program addresses */ rv = vsw_mac_client_init(vswp, NULL, VSW_LOCALDEV); if (rv != 0) { cmn_err(CE_NOTE, "!vsw%d: failed to program interface " "unicast address\n", vswp->instance); } /* * Notify the MAC layer of the changed address. */ if (rv == 0) { mac_unicst_update(vswp->if_mh, (uint8_t *)&vswp->if_addr); } } RW_EXIT(&vswp->if_lockrw); WRITE_ENTER(&plist->lockrw); /* program unicast address of ports in the network device */ for (port = plist->head; port != NULL; port = port->p_next) { if (port->addr_set) /* addr already set */ continue; /* Open a mac client and program addresses */ rv = vsw_mac_client_init(vswp, port, VSW_VNETPORT); if (rv != 0) { cmn_err(CE_NOTE, "!vsw%d: failed to program port(%d) " "unicast address\n", vswp->instance, port->p_instance); } } /* announce macaddr of vnets to the physical switch */ if (vsw_publish_macaddr_count != 0) { /* enabled */ for (port = plist->head; port != NULL; port = port->p_next) { vsw_publish_macaddr(vswp, port); } } RW_EXIT(&plist->lockrw); } /* * Remove unicast, multicast addresses and close mac clients * for the vsw interface and all ports. */ void vsw_unset_addrs(vsw_t *vswp) { READ_ENTER(&vswp->if_lockrw); if (vswp->if_state & VSW_IF_UP) { /* Cleanup and close the mac client for the interface */ vsw_mac_client_cleanup(vswp, NULL, VSW_LOCALDEV); } RW_EXIT(&vswp->if_lockrw); /* Cleanup and close the mac clients for all ports */ vsw_mac_cleanup_ports(vswp); } /* * Open the underlying network device for access in layer2 mode. * Returns: * 0 on success * EAGAIN if mac_open() fails due to the device being not available yet. * EIO on any other failures. */ int vsw_mac_open(vsw_t *vswp) { int rv; ASSERT(MUTEX_HELD(&vswp->mac_lock)); if (vswp->mh != NULL) { /* already open */ return (0); } if (vswp->mac_open_retries++ >= vsw_mac_open_retries) { /* exceeded max retries */ return (EIO); } if ((rv = mac_open_by_linkname(vswp->physname, &vswp->mh)) != 0) { /* * If mac_open() failed and the error indicates that either * the dlmgmtd door or the device is not available yet, we * return EAGAIN to indicate that mac_open() needs to be * retried. For example, this may happen during boot up, if * the required link aggregation groups(devices) have not * been created yet. */ if (rv == ENOENT || rv == EBADF) { return (EAGAIN); } else { cmn_err(CE_WARN, "vsw%d: mac_open %s failed rv:%x", vswp->instance, vswp->physname, rv); return (EIO); } } vswp->mac_open_retries = 0; vsw_mac_set_mtu(vswp, vswp->mtu); return (0); } /* * Close the underlying physical device. */ void vsw_mac_close(vsw_t *vswp) { ASSERT(MUTEX_HELD(&vswp->mac_lock)); if (vswp->mh != NULL) { if (vswp->mtu != vswp->mtu_physdev_orig) { vsw_mac_set_mtu(vswp, vswp->mtu_physdev_orig); } mac_close(vswp->mh); vswp->mh = NULL; } } /* * Add multicast addr. */ int vsw_mac_multicast_add(vsw_t *vswp, vsw_port_t *port, mcst_addr_t *mcst_p, int type) { int ret = 0; mac_client_handle_t mch; WRITE_MACCL_ENTER(vswp, port, type); mch = (type == VSW_LOCALDEV) ? vswp->mch : port->p_mch; if (mch != NULL) { ret = mac_multicast_add(mch, mcst_p->mca.ether_addr_octet); if (ret != 0) { cmn_err(CE_WARN, "!vsw%d: unable to " "program multicast address(%s) err=%d", vswp->instance, ether_sprintf((void *)&mcst_p->mca), ret); RW_MACCL_EXIT(vswp, port, type); return (ret); } mcst_p->mac_added = B_TRUE; } RW_MACCL_EXIT(vswp, port, type); return (ret); } /* * Remove multicast addr. */ void vsw_mac_multicast_remove(vsw_t *vswp, vsw_port_t *port, mcst_addr_t *mcst_p, int type) { mac_client_handle_t mch; WRITE_MACCL_ENTER(vswp, port, type); mch = (type == VSW_LOCALDEV) ? vswp->mch : port->p_mch; if (mch != NULL && mcst_p->mac_added) { mac_multicast_remove(mch, mcst_p->mca.ether_addr_octet); mcst_p->mac_added = B_FALSE; } RW_MACCL_EXIT(vswp, port, type); } /* * Add all multicast addresses of the port. */ static void vsw_mac_multicast_add_all(vsw_t *vswp, vsw_port_t *portp, int type) { mcst_addr_t *mcap; mac_client_handle_t mch; kmutex_t *mca_lockp; int rv; ASSERT((type == VSW_LOCALDEV) || (type == VSW_VNETPORT)); if (type == VSW_LOCALDEV) { ASSERT(RW_WRITE_HELD(&vswp->maccl_rwlock)); mch = vswp->mch; mcap = vswp->mcap; mca_lockp = &vswp->mca_lock; } else { ASSERT(RW_WRITE_HELD(&portp->maccl_rwlock)); mch = portp->p_mch; mcap = portp->mcap; mca_lockp = &portp->mca_lock; } if (mch == NULL) return; mutex_enter(mca_lockp); for (mcap = mcap; mcap != NULL; mcap = mcap->nextp) { if (mcap->mac_added) continue; rv = mac_multicast_add(mch, (uchar_t *)&mcap->mca); if (rv == 0) { mcap->mac_added = B_TRUE; } else { cmn_err(CE_WARN, "!vsw%d: unable to program " "multicast address(%s) err=%d", vswp->instance, ether_sprintf((void *)&mcap->mca), rv); } } mutex_exit(mca_lockp); } /* * Remove all multicast addresses of the port. */ static void vsw_mac_multicast_remove_all(vsw_t *vswp, vsw_port_t *portp, int type) { mac_client_handle_t mch; mcst_addr_t *mcap; kmutex_t *mca_lockp; ASSERT((type == VSW_LOCALDEV) || (type == VSW_VNETPORT)); if (type == VSW_LOCALDEV) { ASSERT(RW_WRITE_HELD(&vswp->maccl_rwlock)); mch = vswp->mch; mcap = vswp->mcap; mca_lockp = &vswp->mca_lock; } else { ASSERT(RW_WRITE_HELD(&portp->maccl_rwlock)); mch = portp->p_mch; mcap = portp->mcap; mca_lockp = &portp->mca_lock; } if (mch == NULL) return; mutex_enter(mca_lockp); for (; mcap != NULL; mcap = mcap->nextp) { if (!mcap->mac_added) continue; (void) mac_multicast_remove(mch, (uchar_t *)&mcap->mca); mcap->mac_added = B_FALSE; } mutex_exit(mca_lockp); } /* * Open a mac client and program uncast and multicast addresses * for a port or the interface. * Returns: * 0 on success * non-zero for failure. */ int vsw_mac_client_init(vsw_t *vswp, vsw_port_t *port, int type) { int rv; mutex_enter(&vswp->mac_lock); WRITE_MACCL_ENTER(vswp, port, type); rv = vsw_maccl_open(vswp, port, type); /* Release mac_lock now */ mutex_exit(&vswp->mac_lock); if (rv == 0) { (void) vsw_set_hw(vswp, port, type); vsw_mac_multicast_add_all(vswp, port, type); } RW_MACCL_EXIT(vswp, port, type); return (rv); } /* * Open a MAC client for a port or an interface. * The flags and their purpose as below: * * MAC_OPEN_FLAGS_NO_HWRINGS -- This flag is used by default * for all ports/interface so that they are associated with * default group & resources. It will not be used for the * ports that have HybridIO is enabled so that the h/w resources * assigned to it. * * MAC_OPEN_FLAGS_SHARES_DESIRED -- This flag is used to indicate * that a port desires a Share. This will be the case with the * the ports that have hybrid mode enabled. This will only cause * MAC layer to allocate a share and corresponding resources * ahead of time. * * MAC_UNICAST_TAG_DISABLE -- This flag is used for VLAN * support. It will cause MAC to not add any tags, but expect * vsw to tag the packets. * * MAC_UNICAST_STRIP_DISABLE -- This flag is used for VLAN * support. It will case the MAC layer to not strip the tags. * Vsw may have to strip the tag for pvid case. */ static int vsw_maccl_open(vsw_t *vswp, vsw_port_t *port, int type) { int rv = 0; int instance; char mac_cl_name[MAXNAMELEN]; const char *dev_name; mac_client_handle_t *mchp; uint64_t flags = MAC_OPEN_FLAGS_NO_HWRINGS; ASSERT(MUTEX_HELD(&vswp->mac_lock)); if (vswp->mh == NULL) { /* * In case net-dev is changed (either set to nothing or * using aggregation device), return success here as the * timeout mechanism will handle it. */ return (0); } mchp = (type == VSW_LOCALDEV) ? &vswp->mch : &port->p_mch; if (*mchp != NULL) { /* already open */ return (0); } dev_name = ddi_driver_name(vswp->dip); instance = ddi_get_instance(vswp->dip); if (type == VSW_VNETPORT) { if (port->p_hio_enabled == B_TRUE) { flags &= ~MAC_OPEN_FLAGS_NO_HWRINGS; flags |= MAC_OPEN_FLAGS_SHARES_DESIRED; } (void) snprintf(mac_cl_name, MAXNAMELEN, "%s%d%s%d", dev_name, instance, "_port", port->p_instance); } else { (void) snprintf(mac_cl_name, MAXNAMELEN, "%s%s%d", dev_name, "_if", instance); } rv = mac_client_open(vswp->mh, mchp, mac_cl_name, flags); if (rv != 0) { cmn_err(CE_NOTE, "!vsw%d:%s mac_client_open() failed\n", vswp->instance, mac_cl_name); } return (rv); } /* * Clean up by removing uncast, multicast addresses and * closing the MAC client for a port or the interface. */ void vsw_mac_client_cleanup(vsw_t *vswp, vsw_port_t *port, int type) { WRITE_MACCL_ENTER(vswp, port, type); vsw_unset_hw(vswp, port, type); vsw_maccl_close(vswp, port, type); vsw_mac_multicast_remove_all(vswp, port, type); RW_MACCL_EXIT(vswp, port, type); } /* * Close a MAC client for a port or an interface. */ static void vsw_maccl_close(vsw_t *vswp, vsw_port_t *port, int type) { mac_client_handle_t *mchp; ASSERT((type == VSW_LOCALDEV) || (type == VSW_VNETPORT)); mchp = (type == VSW_LOCALDEV) ? &vswp->mch : &port->p_mch; if (*mchp != NULL) { mac_client_close(*mchp, 0); *mchp = NULL; } } /* * Cleanup MAC client related stuff for all ports. */ void vsw_mac_cleanup_ports(vsw_t *vswp) { vsw_port_list_t *plist = &vswp->plist; vsw_port_t *port; READ_ENTER(&plist->lockrw); for (port = plist->head; port != NULL; port = port->p_next) { vsw_mac_client_cleanup(vswp, port, VSW_VNETPORT); } RW_EXIT(&plist->lockrw); } /* * Depending on the mode specified, the capabilites and capacity * of the underlying device setup the physical device. * * If in layer 3 mode, then do nothing. * * If in layer 2 mode, open a mac client and program the mac-address * and vlan-ids. The MAC layer will take care of programming * the address into h/w or set the h/w into promiscuous mode. * * Returns 0 success, 1 on failure. */ int vsw_set_hw(vsw_t *vswp, vsw_port_t *port, int type) { int err = 1; D1(vswp, "%s: enter", __func__); ASSERT((type == VSW_LOCALDEV) || (type == VSW_VNETPORT)); if (vswp->smode == VSW_LAYER3) return (0); if (type == VSW_VNETPORT) { ASSERT(port != NULL); err = vsw_set_port_hw_addr(port); } else { err = vsw_set_if_hw_addr(vswp); } D1(vswp, "%s: exit", __func__); return (err); } /* * If in layer 3 mode do nothing. * * If in layer 2 switched mode remove the address from the physical * device. * * If in layer 2 promiscuous mode disable promisc mode. * * Returns 0 on success. */ void vsw_unset_hw(vsw_t *vswp, vsw_port_t *port, int type) { D1(vswp, "%s: enter", __func__); ASSERT((type == VSW_LOCALDEV) || (type == VSW_VNETPORT)); if (vswp->smode == VSW_LAYER3) return; if (type == VSW_VNETPORT) { ASSERT(port != NULL); vsw_unset_hw_addr(vswp, port, type); } else { vsw_unset_hw_addr(vswp, NULL, type); } D1(vswp, "%s: exit", __func__); } /* * Program the macaddress and vlans of a port. * * Returns 0 on sucess, 1 on failure. */ static int vsw_set_port_hw_addr(vsw_port_t *port) { vsw_t *vswp = port->p_vswp; mac_diag_t diag; uint8_t *macaddr; uint16_t vid = VLAN_ID_NONE; int rv; uint16_t mac_flags = MAC_UNICAST_TAG_DISABLE | MAC_UNICAST_STRIP_DISABLE; D1(vswp, "%s: enter", __func__); ASSERT(RW_WRITE_HELD(&port->maccl_rwlock)); if (port->p_mch == NULL) return (0); /* * If the port has a specific 'pvid', then * register with that vlan-id, otherwise register * with VLAN_ID_NONE. */ if (port->pvid != vswp->default_vlan_id) { vid = port->pvid; } macaddr = (uint8_t *)port->p_macaddr.ether_addr_octet; if (!(vswp->smode & VSW_LAYER2_PROMISC)) { mac_flags |= MAC_UNICAST_HW; } if (port->addr_set == B_FALSE) { port->p_muh = NULL; rv = mac_unicast_add(port->p_mch, macaddr, mac_flags, &port->p_muh, vid, &diag); if (rv != 0) { cmn_err(CE_WARN, "vsw%d: Failed to program" "macaddr,vid(%s, %d) err=%d", vswp->instance, ether_sprintf((void *)macaddr), vid, rv); return (rv); } port->addr_set = B_TRUE; D2(vswp, "%s:programmed macaddr(%s) vid(%d) into device %s", __func__, ether_sprintf((void *)macaddr), vid, vswp->physname); } /* Add vlans to the MAC layer */ vsw_mac_add_vlans(vswp, port->p_mch, macaddr, mac_flags, port->vids, port->nvids); mac_rx_set(port->p_mch, vsw_port_rx_cb, (void *)port); D1(vswp, "%s: exit", __func__); return (rv); } /* * Program the macaddress and vlans of a port. * * Returns 0 on sucess, 1 on failure. */ static int vsw_set_if_hw_addr(vsw_t *vswp) { mac_diag_t diag; uint8_t *macaddr; uint8_t primary_addr[ETHERADDRL]; uint16_t vid = VLAN_ID_NONE; int rv; uint16_t mac_flags = MAC_UNICAST_TAG_DISABLE | MAC_UNICAST_STRIP_DISABLE; D1(vswp, "%s: enter", __func__); ASSERT(RW_WRITE_HELD(&vswp->maccl_rwlock)); if (vswp->mch == NULL) return (0); macaddr = (uint8_t *)vswp->if_addr.ether_addr_octet; /* check if it is the primary macaddr of the card. */ mac_unicast_primary_get(vswp->mh, primary_addr); if (ether_cmp((void *)primary_addr, (void*)macaddr) == 0) { mac_flags |= MAC_UNICAST_PRIMARY; } /* * If the interface has a specific 'pvid', then * register with that vlan-id, otherwise register * with VLAN_ID_NONE. */ if (vswp->pvid != vswp->default_vlan_id) { vid = vswp->pvid; } if (!(vswp->smode & VSW_LAYER2_PROMISC)) { mac_flags |= MAC_UNICAST_HW; } if (vswp->addr_set == B_FALSE) { vswp->muh = NULL; rv = mac_unicast_add(vswp->mch, macaddr, mac_flags, &vswp->muh, vid, &diag); if (rv != 0) { cmn_err(CE_WARN, "vsw%d: Failed to program" "macaddr,vid(%s, %d) err=%d", vswp->instance, ether_sprintf((void *)macaddr), vid, rv); return (rv); } vswp->addr_set = B_TRUE; D2(vswp, "%s:programmed macaddr(%s) vid(%d) into device %s", __func__, ether_sprintf((void *)macaddr), vid, vswp->physname); } vsw_mac_add_vlans(vswp, vswp->mch, macaddr, mac_flags, vswp->vids, vswp->nvids); mac_rx_set(vswp->mch, vsw_if_rx_cb, (void *)vswp); D1(vswp, "%s: exit", __func__); return (rv); } /* * Remove a unicast mac address which has previously been programmed * into HW. * * Returns 0 on sucess, 1 on failure. */ static void vsw_unset_hw_addr(vsw_t *vswp, vsw_port_t *port, int type) { vsw_vlanid_t *vids; int nvids; mac_client_handle_t mch = NULL; D1(vswp, "%s: enter", __func__); ASSERT((type == VSW_LOCALDEV) || (type == VSW_VNETPORT)); if (type == VSW_VNETPORT) { ASSERT(port != NULL); ASSERT(RW_WRITE_HELD(&port->maccl_rwlock)); vids = port->vids; nvids = port->nvids; } else { ASSERT(RW_WRITE_HELD(&vswp->maccl_rwlock)); vids = vswp->vids; nvids = vswp->nvids; } /* First clear the callback */ if (type == VSW_LOCALDEV) { mch = vswp->mch; } else if (type == VSW_VNETPORT) { mch = port->p_mch; } if (mch == NULL) { return; } mac_rx_clear(mch); /* Remove vlans */ vsw_mac_remove_vlans(mch, vids, nvids); if ((type == VSW_LOCALDEV) && (vswp->addr_set == B_TRUE)) { (void) mac_unicast_remove(vswp->mch, vswp->muh); vswp->muh = NULL; D2(vswp, "removed vsw interface mac-addr from " "the device %s", vswp->physname); vswp->addr_set = B_FALSE; } else if ((type == VSW_VNETPORT) && (port->addr_set == B_TRUE)) { (void) mac_unicast_remove(port->p_mch, port->p_muh); port->p_muh = NULL; D2(vswp, "removed port(0x%p) mac-addr from " "the device %s", port, vswp->physname); port->addr_set = B_FALSE; } D1(vswp, "%s: exit", __func__); } /* * receive callback routine for vsw interface. Invoked by MAC layer when there * are pkts being passed up from physical device for this vsw interface. */ /* ARGSUSED */ static void vsw_if_rx_cb(void *arg, mac_resource_handle_t mrh, mblk_t *mp, boolean_t loopback) { _NOTE(ARGUNUSED(mrh)) vsw_t *vswp = (vsw_t *)arg; mblk_t *mpt; int count; ASSERT(vswp != NULL); D1(vswp, "%s: enter", __func__); READ_ENTER(&vswp->if_lockrw); if (vswp->if_state & VSW_IF_UP) { RW_EXIT(&vswp->if_lockrw); count = vsw_vlan_frame_untag(vswp, VSW_LOCALDEV, &mp, &mpt); if (count != 0) { mac_rx(vswp->if_mh, NULL, mp); } } else { RW_EXIT(&vswp->if_lockrw); freemsgchain(mp); } D1(vswp, "%s: exit", __func__); } /* * receive callback routine for port. Invoked by MAC layer when there * are pkts being passed up from physical device for this port. */ /* ARGSUSED */ static void vsw_port_rx_cb(void *arg, mac_resource_handle_t mrh, mblk_t *mp, boolean_t loopback) { _NOTE(ARGUNUSED(mrh)) vsw_t *vswp; vsw_port_t *port = arg; ASSERT(port != NULL); vswp = port->p_vswp; D1(vswp, "vsw_port_rx_cb: enter"); /* * Send the packets to the peer directly. */ (void) vsw_portsend(port, mp); D1(vswp, "vsw_port_rx_cb: exit"); } /* * Send a message out over the physical device * via the MAC layer. * * Returns any mblks that it was unable to transmit. */ mblk_t * vsw_tx_msg(vsw_t *vswp, mblk_t *mp, int caller, vsw_port_t *port) { mac_client_handle_t mch; mac_unicast_handle_t muh; READ_MACCL_ENTER(vswp, port, caller); mch = (caller == VSW_LOCALDEV) ? vswp->mch : port->p_mch; muh = (caller == VSW_LOCALDEV) ? vswp->muh : port->p_muh; if ((mch != NULL) && (muh != NULL)) { /* packets are sent or dropped */ (void) mac_tx(mch, mp, 0, MAC_DROP_ON_NO_DESC, NULL); } RW_MACCL_EXIT(vswp, port, caller); return (NULL); } /* * vsw_port_mac_reconfig -- Cleanup and close the MAC client * and reopen and re-configure the MAC client with new flags etc. * This function is useful for two different purposes: * 1) To update the MAC client with new vlan-ids. This is done * by freeing the existing vlan-ids and reopen with the new * vlan-ids. * * 2) If the Hybrid mode status of a port changes, then the * MAC client need to be closed and re-opened, otherwise, * Share related resources may not be freed(hybird mode disabled) * or assigned(hybrid mode enabled). To accomplish this, * this function simply closes and reopens the MAC client. * The reopen will result in using the flags based on the * new hybrid mode of the port. */ void vsw_port_mac_reconfig(vsw_port_t *portp, boolean_t update_vlans, uint16_t new_pvid, vsw_vlanid_t *new_vids, int new_nvids) { vsw_t *vswp = portp->p_vswp; int rv; D1(vswp, "%s: enter", __func__); /* * Remove the multi-cast addresses, unicast address * and close the mac-client. */ mutex_enter(&vswp->mac_lock); WRITE_ENTER(&portp->maccl_rwlock); vsw_mac_multicast_remove_all(vswp, portp, VSW_VNETPORT); vsw_unset_hw(vswp, portp, VSW_VNETPORT); vsw_maccl_close(vswp, portp, VSW_VNETPORT); if (update_vlans == B_TRUE) { if (portp->nvids != 0) { kmem_free(portp->vids, sizeof (vsw_vlanid_t) * portp->nvids); portp->vids = NULL; portp->nvids = 0; } portp->vids = new_vids; portp->nvids = new_nvids; portp->pvid = new_pvid; } /* * Now re-open the mac-client and * configure unicast addr and multicast addrs. */ rv = vsw_maccl_open(vswp, portp, VSW_VNETPORT); if (rv != 0) { goto recret; } if (vsw_set_hw(vswp, portp, VSW_VNETPORT)) { cmn_err(CE_NOTE, "!vsw%d: port:%d failed to " "set unicast address\n", vswp->instance, portp->p_instance); goto recret; } vsw_mac_multicast_add_all(vswp, portp, VSW_VNETPORT); recret: RW_EXIT(&portp->maccl_rwlock); mutex_exit(&vswp->mac_lock); D1(vswp, "%s: exit", __func__); } /* * vsw_if_mac_reconfig -- Reconfigure the vsw interfaace's mac-client * by closing and re-opening it. This function is used handle the * following two cases: * * 1) Handle the MAC address change for the interface. * 2) Handle vlan update. */ void vsw_if_mac_reconfig(vsw_t *vswp, boolean_t update_vlans, uint16_t new_pvid, vsw_vlanid_t *new_vids, int new_nvids) { int rv; D1(vswp, "%s: enter", __func__); /* * Remove the multi-cast addresses, unicast address * and close the mac-client. */ mutex_enter(&vswp->mac_lock); WRITE_ENTER(&vswp->maccl_rwlock); vsw_mac_multicast_remove_all(vswp, NULL, VSW_LOCALDEV); vsw_unset_hw(vswp, NULL, VSW_LOCALDEV); vsw_maccl_close(vswp, NULL, VSW_LOCALDEV); if (update_vlans == B_TRUE) { if (vswp->nvids != 0) { kmem_free(vswp->vids, sizeof (vsw_vlanid_t) * vswp->nvids); vswp->vids = NULL; vswp->nvids = 0; } vswp->vids = new_vids; vswp->nvids = new_nvids; vswp->pvid = new_pvid; } /* * Now re-open the mac-client and * configure unicast addr and multicast addrs. */ rv = vsw_maccl_open(vswp, NULL, VSW_LOCALDEV); if (rv != 0) { goto ifrecret; } if (vsw_set_hw(vswp, NULL, VSW_LOCALDEV)) { cmn_err(CE_NOTE, "!vsw%d:failed to set unicast address\n", vswp->instance); goto ifrecret; } vsw_mac_multicast_add_all(vswp, NULL, VSW_LOCALDEV); ifrecret: RW_EXIT(&vswp->maccl_rwlock); mutex_exit(&vswp->mac_lock); D1(vswp, "%s: exit", __func__); } /* * vsw_mac_port_reconfig_vlans -- Reconfigure a port to handle * vlan configuration update. As the removal of the last unicast-address,vid * from the MAC client results in releasing all resources, it expects * no Shares to be associated with such MAC client. * * To handle vlan configuration update for a port that already has * a Share bound, then we need to free that share prior to reconfiguration. * Initiate the hybrdIO setup again after the completion of reconfiguration. */ void vsw_mac_port_reconfig_vlans(vsw_port_t *portp, uint16_t new_pvid, vsw_vlanid_t *new_vids, int new_nvids) { /* * As the reconfiguration involves the close of * mac client, cleanup HybridIO and later restart * HybridIO setup again. */ if (portp->p_hio_enabled == B_TRUE) { vsw_hio_stop_port(portp); } vsw_port_mac_reconfig(portp, B_TRUE, new_pvid, new_vids, new_nvids); if (portp->p_hio_enabled == B_TRUE) { /* reset to setup the HybridIO again. */ vsw_hio_port_reset(portp, B_FALSE); } } /* Add vlans to MAC client */ static void vsw_mac_add_vlans(vsw_t *vswp, mac_client_handle_t mch, uint8_t *macaddr, uint16_t flags, vsw_vlanid_t *vids, int nvids) { vsw_vlanid_t *vidp; mac_diag_t diag; int rv; int i; flags |= MAC_UNICAST_TAG_DISABLE | MAC_UNICAST_STRIP_DISABLE; /* Add vlans to the MAC layer */ for (i = 0; i < nvids; i++) { vidp = &vids[i]; if (vidp->vl_set == B_TRUE) { continue; } rv = mac_unicast_add(mch, macaddr, flags, &vidp->vl_muh, vidp->vl_vid, &diag); if (rv != 0) { cmn_err(CE_WARN, "vsw%d: Failed to program" "macaddr,vid(%s, %d) err=%d", vswp->instance, ether_sprintf((void *)macaddr), vidp->vl_vid, rv); } else { vidp->vl_set = B_TRUE; D2(vswp, "%s:programmed macaddr(%s) vid(%d) " "into device %s", __func__, ether_sprintf((void *)macaddr), vidp->vl_vid, vswp->physname); } } } /* Remove vlans from the MAC client */ static void vsw_mac_remove_vlans(mac_client_handle_t mch, vsw_vlanid_t *vids, int nvids) { int i; vsw_vlanid_t *vidp; for (i = 0; i < nvids; i++) { vidp = &vids[i]; if (vidp->vl_set == B_FALSE) { continue; } mac_unicast_remove(mch, vidp->vl_muh); vidp->vl_set = B_FALSE; } } #define ARH_FIXED_LEN 8 /* Length of fixed part of ARP header(see arp.h) */ /* * Send a gratuitous RARP packet to notify the physical switch to update its * Layer2 forwarding table for the given mac address. This is done to allow the * switch to quickly learn the macaddr-port association when a guest is live * migrated or when vsw's physical device is changed dynamically. Any protocol * packet would serve this purpose, but we choose RARP, as it allows us to * accomplish this within L2 (ie, no need to specify IP addr etc in the packet) * The macaddr of vnet is retained across migration. Hence, we don't need to * update the arp cache of other hosts within the broadcast domain. Note that * it is harmless to send these RARP packets during normal port attach of a * client vnet. This can can be turned off if needed, by setting * vsw_publish_macaddr_count to zero in /etc/system. */ void vsw_publish_macaddr(vsw_t *vswp, vsw_port_t *portp) { mblk_t *mp; mblk_t *bp; struct arphdr *arh; struct ether_header *ehp; int count = 0; int plen = 4; uint8_t *cp; mp = allocb(ETHERMIN, BPRI_MED); if (mp == NULL) { return; } /* Initialize eth header */ ehp = (struct ether_header *)mp->b_rptr; bcopy(ðerbroadcastaddr, &ehp->ether_dhost, ETHERADDRL); bcopy(&portp->p_macaddr, &ehp->ether_shost, ETHERADDRL); ehp->ether_type = htons(ETHERTYPE_REVARP); /* Initialize arp packet */ arh = (struct arphdr *)(mp->b_rptr + sizeof (struct ether_header)); cp = (uint8_t *)arh; arh->ar_hrd = htons(ARPHRD_ETHER); /* Hardware type: ethernet */ arh->ar_pro = htons(ETHERTYPE_IP); /* Protocol type: IP */ arh->ar_hln = ETHERADDRL; /* Length of hardware address: 6 */ arh->ar_pln = plen; /* Length of protocol address: 4 */ arh->ar_op = htons(REVARP_REQUEST); /* Opcode: REVARP Request */ cp += ARH_FIXED_LEN; /* Sender's hardware address and protocol address */ bcopy(&portp->p_macaddr, cp, ETHERADDRL); cp += ETHERADDRL; bzero(cp, plen); /* INADDR_ANY */ cp += plen; /* Target hardware address and protocol address */ bcopy(&portp->p_macaddr, cp, ETHERADDRL); cp += ETHERADDRL; bzero(cp, plen); /* INADDR_ANY */ cp += plen; mp->b_wptr += ETHERMIN; /* total size is 42; round up to ETHERMIN */ for (count = 0; count < vsw_publish_macaddr_count; count++) { bp = dupmsg(mp); if (bp == NULL) { continue; } /* transmit the packet */ bp = vsw_tx_msg(vswp, bp, VSW_VNETPORT, portp); if (bp != NULL) { freemsg(bp); } } freemsg(mp); } static void vsw_mac_set_mtu(vsw_t *vswp, uint32_t mtu) { uint_t mtu_orig; int rv; rv = mac_set_mtu(vswp->mh, mtu, &mtu_orig); if (rv != 0) { cmn_err(CE_NOTE, "!vsw%d: Unable to set the mtu:%d, in the " "physical device:%s\n", vswp->instance, mtu, vswp->physname); return; } /* save the original mtu of physdev to reset it back later if needed */ vswp->mtu_physdev_orig = mtu_orig; }