diff options
Diffstat (limited to 'pimd/pim_mlag.c')
| -rw-r--r-- | pimd/pim_mlag.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/pimd/pim_mlag.c b/pimd/pim_mlag.c new file mode 100644 index 0000000000..5e5da29002 --- /dev/null +++ b/pimd/pim_mlag.c @@ -0,0 +1,189 @@ +/* + * This is an implementation of PIM MLAG Functionality + * + * Module name: PIM MLAG + * + * Author: sathesh Kumar karra <sathk@cumulusnetworks.com> + * + * Copyright (C) 2019 Cumulus Networks http://www.cumulusnetworks.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; see the file COPYING; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include <zebra.h> + +#include "pimd.h" +#include "pim_mlag.h" + +extern struct zclient *zclient; + +static int pim_mlag_register_handler(struct thread *thread) +{ + uint32_t bit_mask = 0; + + if (!zclient) + return -1; + + SET_FLAG(bit_mask, (1 << MLAG_STATUS_UPDATE)); + SET_FLAG(bit_mask, (1 << MLAG_MROUTE_ADD)); + SET_FLAG(bit_mask, (1 << MLAG_MROUTE_DEL)); + SET_FLAG(bit_mask, (1 << MLAG_DUMP)); + SET_FLAG(bit_mask, (1 << MLAG_MROUTE_ADD_BULK)); + SET_FLAG(bit_mask, (1 << MLAG_MROUTE_DEL_BULK)); + SET_FLAG(bit_mask, (1 << MLAG_PIM_CFG_DUMP)); + SET_FLAG(bit_mask, (1 << MLAG_VXLAN_UPDATE)); + SET_FLAG(bit_mask, (1 << MLAG_PEER_FRR_STATUS)); + + if (PIM_DEBUG_MLAG) + zlog_debug("%s: Posting Client Register to MLAG mask: 0x%x", + __func__, bit_mask); + + zclient_send_mlag_register(zclient, bit_mask); + return 0; +} + +void pim_mlag_register(void) +{ + if (router->mlag_process_register) + return; + + router->mlag_process_register = true; + + thread_add_event(router->master, pim_mlag_register_handler, NULL, 0, + NULL); +} + +static int pim_mlag_deregister_handler(struct thread *thread) +{ + if (!zclient) + return -1; + + if (PIM_DEBUG_MLAG) + zlog_debug("%s: Posting Client De-Register to MLAG from PIM", + __func__); + router->connected_to_mlag = false; + zclient_send_mlag_deregister(zclient); + return 0; +} + +void pim_mlag_deregister(void) +{ + /* if somebody still interested in the MLAG channel skip de-reg */ + if (router->pim_mlag_intf_cnt) + return; + + /* not registered; nothing do */ + if (!router->mlag_process_register) + return; + + router->mlag_process_register = false; + + thread_add_event(router->master, pim_mlag_deregister_handler, NULL, 0, + NULL); +} + +void pim_if_configure_mlag_dualactive(struct pim_interface *pim_ifp) +{ + if (!pim_ifp || !pim_ifp->pim || pim_ifp->activeactive == true) + return; + + if (PIM_DEBUG_MLAG) + zlog_debug("%s: Configuring active-active on Interface: %s", + __func__, "NULL"); + + pim_ifp->activeactive = true; + if (pim_ifp->pim) + pim_ifp->pim->inst_mlag_intf_cnt++; + + router->pim_mlag_intf_cnt++; + if (PIM_DEBUG_MLAG) + zlog_debug( + "%s: Total MLAG configured Interfaces on router: %d, Inst: %d", + __func__, router->pim_mlag_intf_cnt, + pim_ifp->pim->inst_mlag_intf_cnt); + + if (router->pim_mlag_intf_cnt == 1) { + /* + * atleast one Interface is configured for MLAG, send register + * to Zebra for receiving MLAG Updates + */ + pim_mlag_register(); + } +} + +void pim_if_unconfigure_mlag_dualactive(struct pim_interface *pim_ifp) +{ + if (!pim_ifp || !pim_ifp->pim || pim_ifp->activeactive == false) + return; + + if (PIM_DEBUG_MLAG) + zlog_debug("%s: UnConfiguring active-active on Interface: %s", + __func__, "NULL"); + + pim_ifp->activeactive = false; + if (pim_ifp->pim) + pim_ifp->pim->inst_mlag_intf_cnt--; + + router->pim_mlag_intf_cnt--; + if (PIM_DEBUG_MLAG) + zlog_debug( + "%s: Total MLAG configured Interfaces on router: %d, Inst: %d", + __func__, router->pim_mlag_intf_cnt, + pim_ifp->pim->inst_mlag_intf_cnt); + + if (router->pim_mlag_intf_cnt == 0) { + /* + * all the Interfaces are MLAG un-configured, post MLAG + * De-register to Zebra + */ + pim_mlag_deregister(); + } +} + + +void pim_instance_mlag_init(struct pim_instance *pim) +{ + if (!pim) + return; + + pim->inst_mlag_intf_cnt = 0; +} + + +void pim_instance_mlag_terminate(struct pim_instance *pim) +{ + struct interface *ifp; + + if (!pim) + return; + + FOR_ALL_INTERFACES (pim->vrf, ifp) { + struct pim_interface *pim_ifp = ifp->info; + + if (!pim_ifp || pim_ifp->activeactive == false) + continue; + + pim_if_unconfigure_mlag_dualactive(pim_ifp); + } + pim->inst_mlag_intf_cnt = 0; +} + +void pim_mlag_init(void) +{ + router->pim_mlag_intf_cnt = 0; + router->connected_to_mlag = false; + router->mlag_fifo = stream_fifo_new(); + router->zpthread_mlag_write = NULL; + router->mlag_stream = stream_new(MLAG_BUF_LIMIT); +} |