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c43ed2e48a
This patch also adds BFD multihop support for BGP. Whether a peer is multi-hop or single hop is determined internally. All IGP peers are considered as multi-hop peers. EBGP peers are considered as single hop unless configured as multi-hop. BGP BFD command enhancement to configure BFD parameters (detect multiplier, min rx and min tx). router bgp <as-number> neighbor <name/ip-address> bfd <detect mult> <min rx> <min tx> Signed-off-by: Radhika Mahankali <radhika@cumulusnetworks.com> Reviewed-by: Dinesh G Dutt <ddutt@cumulusnetworks.com> Reviewed-by: Vipin Kumar <vipin@cumulusnetworks.com> Reviewed-by: Kanna Rajagopal <kanna@cumulusnetworks.com>
803 lines
22 KiB
C
803 lines
22 KiB
C
/* Kernel routing table updates using netlink over GNU/Linux system.
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* Copyright (C) 1997, 98, 99 Kunihiro Ishiguro
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* GNU Zebra is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Zebra; see the file COPYING. If not, write to the Free
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* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#include <zebra.h>
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#include <sys/un.h> /* for sockaddr_un */
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#include <net/if.h>
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#include "zebra/zserv.h"
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#include "zebra/interface.h"
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#include "zebra/debug.h"
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#include "zebra/zebra_ptm.h"
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#include "if.h"
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#include "command.h"
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#include "stream.h"
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#include "ptm_lib.h"
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#include "zebra/zebra_ptm_redistribute.h"
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#define ZEBRA_PTM_RECONNECT_TIME_INITIAL 1 /* initial reconnect is 1s */
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#define ZEBRA_PTM_RECONNECT_TIME_MAX 300
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#define PTM_MSG_LEN 4
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#define PTM_HEADER_LEN 37
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const char ZEBRA_PTM_GET_STATUS_CMD[] = "get-status";
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const char ZEBRA_PTM_BFD_START_CMD[] = "start-bfd-sess";
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const char ZEBRA_PTM_BFD_STOP_CMD[] = "stop-bfd-sess";
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const char ZEBRA_PTM_PORT_STR[] = "port";
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const char ZEBRA_PTM_CBL_STR[] = "cbl status";
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const char ZEBRA_PTM_PASS_STR[] = "pass";
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const char ZEBRA_PTM_FAIL_STR[] = "fail";
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const char ZEBRA_PTM_BFDSTATUS_STR[] = "state";
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const char ZEBRA_PTM_BFDSTATUS_UP_STR[] = "Up";
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const char ZEBRA_PTM_BFDSTATUS_DOWN_STR[] = "Down";
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const char ZEBRA_PTM_BFDDEST_STR[] = "peer";
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const char ZEBRA_PTM_BFDSRC_STR[] = "local";
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const char ZEBRA_PTM_INVALID_PORT_NAME[] = "N/A";
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const char ZEBRA_PTM_INVALID_SRC_IP[] = "N/A";
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const char ZEBRA_PTM_BFD_DST_IP_FIELD[] = "dstIPaddr";
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const char ZEBRA_PTM_BFD_SRC_IP_FIELD[] = "srcIPaddr";
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const char ZEBRA_PTM_BFD_MIN_RX_FIELD[] = "requiredMinRx";
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const char ZEBRA_PTM_BFD_MIN_TX_FIELD[] = "upMinTx";
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const char ZEBRA_PTM_BFD_DETECT_MULT_FIELD[] = "detectMult";
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const char ZEBRA_PTM_BFD_MULTI_HOP_FIELD[] = "multiHop";
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const char ZEBRA_PTM_BFD_CLIENT_FIELD[] = "client";
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const char ZEBRA_PTM_BFD_SEQID_FIELD[] = "seqid";
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const char ZEBRA_PTM_BFD_IFNAME_FIELD[] = "ifName";
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const char ZEBRA_PTM_BFD_MAX_HOP_CNT_FIELD[] = "maxHopCnt";
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extern struct zebra_t zebrad;
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int ptm_enable;
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int zebra_ptm_sock = -1;
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struct thread *zebra_ptm_thread = NULL;
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static int zebra_ptm_reconnect_time = ZEBRA_PTM_RECONNECT_TIME_INITIAL;
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int zebra_ptm_pid = 0;
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static ptm_lib_handle_t *ptm_hdl;
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static int zebra_ptm_socket_init(void);
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int zebra_ptm_sock_read(struct thread *);
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int zebra_ptm_sock_write(struct thread *);
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static void zebra_ptm_install_commands (void);
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static int zebra_ptm_handle_cbl_msg(void *arg, void *in_ctxt);
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static int zebra_ptm_handle_bfd_msg(void *arg, void *in_ctxt);
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void zebra_bfd_peer_replay_req (void);
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const char ZEBRA_PTM_SOCK_NAME[] = "\0/var/run/ptmd.socket";
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void
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zebra_ptm_init (void)
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{
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char buf[64];
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zebra_ptm_pid = getpid();
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zebra_ptm_install_commands();
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sprintf(buf, "%s", "quagga");
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ptm_hdl = ptm_lib_register(buf, NULL, zebra_ptm_handle_bfd_msg,
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zebra_ptm_handle_cbl_msg);
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}
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int
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zebra_ptm_connect (struct thread *t)
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{
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int init = 0;
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char *data;
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void *out_ctxt;
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int len = ZEBRA_PTM_SEND_MAX_SOCKBUF;
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if (zebra_ptm_sock == -1) {
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zebra_ptm_socket_init();
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init = 1;
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}
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if (zebra_ptm_sock != -1) {
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if (init) {
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zebra_bfd_peer_replay_req();
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}
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if (ptm_enable) {
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data = calloc(1, len);
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if (!data) {
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zlog_debug("%s: Allocation of send data failed", __func__);
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return -1;
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}
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ptm_lib_init_msg(ptm_hdl, 0, PTMLIB_MSG_TYPE_CMD, NULL, &out_ctxt);
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ptm_lib_append_msg(ptm_hdl, out_ctxt, "cmd", ZEBRA_PTM_GET_STATUS_CMD);
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ptm_lib_complete_msg(ptm_hdl, out_ctxt, data, &len);
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zebra_ptm_thread = thread_add_write (zebrad.master, zebra_ptm_sock_write,
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data, zebra_ptm_sock);
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}
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zebra_ptm_reconnect_time = ZEBRA_PTM_RECONNECT_TIME_INITIAL;
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} else {
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zebra_ptm_reconnect_time *= 2;
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if (zebra_ptm_reconnect_time > ZEBRA_PTM_RECONNECT_TIME_MAX)
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zebra_ptm_reconnect_time = ZEBRA_PTM_RECONNECT_TIME_MAX;
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zebra_ptm_thread = thread_add_timer (zebrad.master, zebra_ptm_connect, NULL,
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zebra_ptm_reconnect_time);
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}
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return(errno);
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}
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DEFUN (zebra_ptm_enable,
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zebra_ptm_enable_cmd,
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"ptm-enable",
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"Enable neighbor check with specified topology\n")
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{
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struct listnode *i;
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struct interface *ifp;
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ptm_enable = 1;
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for (ALL_LIST_ELEMENTS_RO (iflist, i, ifp))
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if (!ifp->ptm_enable)
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{
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ifp->ptm_enable = 1;
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ifp->ptm_status = 1; /* to bring down ports that may fail check */
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}
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zebra_ptm_connect(NULL);
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return CMD_SUCCESS;
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}
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DEFUN (no_zebra_ptm_enable,
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no_zebra_ptm_enable_cmd,
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"no ptm-enable",
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NO_STR
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"Enable neighbor check with specified topology\n")
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{
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struct listnode *i;
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struct interface *ifp;
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int send_linkup;
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ptm_enable = 0;
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for (ALL_LIST_ELEMENTS_RO (iflist, i, ifp))
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{
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if (ifp->ptm_enable)
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{
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if (!if_is_operative(ifp))
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send_linkup = 1;
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ifp->ptm_enable = 0;
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if (if_is_operative (ifp) && send_linkup) {
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zlog_debug ("%s: Bringing up interface %s", __func__,
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ifp->name);
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if_up (ifp);
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}
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}
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}
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return CMD_SUCCESS;
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}
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void
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zebra_ptm_write (struct vty *vty)
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{
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if (ptm_enable)
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vty_out (vty, "ptm-enable%s", VTY_NEWLINE);
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return;
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}
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static int
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zebra_ptm_socket_init (void)
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{
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int ret;
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int sock;
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struct sockaddr_un addr;
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zebra_ptm_sock = -1;
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sock = socket (PF_UNIX, (SOCK_STREAM | SOCK_NONBLOCK), 0);
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if (sock < 0)
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return -1;
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/* Make server socket. */
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memset (&addr, 0, sizeof (struct sockaddr_un));
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addr.sun_family = AF_UNIX;
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memcpy (&addr.sun_path, ZEBRA_PTM_SOCK_NAME,
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sizeof(ZEBRA_PTM_SOCK_NAME));
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ret = connect(sock, (struct sockaddr *) &addr,
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sizeof (addr.sun_family)+sizeof (ZEBRA_PTM_SOCK_NAME)-1);
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if (ret < 0)
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{
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zlog_warn("%s: Unable to connect to socket %s [%s]",
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__func__, ZEBRA_PTM_SOCK_NAME, safe_strerror(errno));
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close (sock);
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return -1;
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}
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zlog_debug ("%s: connection to ptm socket %s succeeded",
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__func__, ZEBRA_PTM_SOCK_NAME);
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zebra_ptm_sock = sock;
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return sock;
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}
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static void
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zebra_ptm_install_commands (void)
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{
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install_element (CONFIG_NODE, &zebra_ptm_enable_cmd);
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install_element (CONFIG_NODE, &no_zebra_ptm_enable_cmd);
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}
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/* BFD session goes down, send message to the protocols. */
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void
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if_bfd_session_down (struct interface *ifp, struct prefix *dp, struct prefix *sp)
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{
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if (IS_ZEBRA_DEBUG_EVENT)
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{
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char buf[2][INET6_ADDRSTRLEN];
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if (ifp)
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{
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zlog_debug ("MESSAGE: ZEBRA_INTERFACE_BFD_DEST_DOWN %s/%d on %s",
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inet_ntop (dp->family, &dp->u.prefix, buf, INET6_ADDRSTRLEN),
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dp->prefixlen, ifp->name);
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}
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else
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{
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zlog_debug ("MESSAGE: ZEBRA_INTERFACE_BFD_DEST_DOWN %s/%d "
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"with src %s/%d",
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inet_ntop (dp->family, &dp->u.prefix, buf[0], INET6_ADDRSTRLEN),
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dp->prefixlen,
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inet_ntop (sp->family, &sp->u.prefix, buf[1], INET6_ADDRSTRLEN),
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sp->prefixlen);
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}
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}
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zebra_interface_bfd_update (ifp, dp, sp);
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}
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static int
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zebra_ptm_handle_bfd_msg(void *arg, void *in_ctxt)
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{
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struct interface *ifp = NULL;
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char port_str[128];
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char bfdst_str[32];
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char dest_str[64];
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char src_str[64];
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struct prefix dest_prefix;
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struct prefix src_prefix;
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ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_PORT_STR, port_str);
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if (port_str[0] == '\0') {
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zlog_debug("%s: Key %s not found in PTM msg", __func__,
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ZEBRA_PTM_PORT_STR);
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return -1;
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}
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if (strcmp(ZEBRA_PTM_INVALID_PORT_NAME, port_str)) {
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ifp = if_lookup_by_name(port_str);
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if (!ifp) {
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zlog_err("%s: %s not found in interface list", __func__, port_str);
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return -1;
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}
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}
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ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_BFDSTATUS_STR, bfdst_str);
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if (bfdst_str[0] == '\0') {
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zlog_debug("%s: Key %s not found in PTM msg", __func__,
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ZEBRA_PTM_BFDSTATUS_STR);
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return -1;
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}
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ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_BFDDEST_STR, dest_str);
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if (dest_str[0] == '\0') {
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zlog_debug("%s: Key %s not found in PTM msg", __func__,
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ZEBRA_PTM_BFDDEST_STR);
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return -1;
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}
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ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_BFDSRC_STR, src_str);
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if (src_str[0] == '\0') {
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zlog_debug("%s: Key %s not found in PTM msg", __func__,
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ZEBRA_PTM_BFDSRC_STR);
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return -1;
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}
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zlog_debug("%s: Recv Port [%s] bfd status [%s] peer [%s] local [%s]",
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__func__, port_str, bfdst_str, dest_str, src_str);
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/* we only care if bfd session goes down */
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if (!strcmp (bfdst_str, ZEBRA_PTM_BFDSTATUS_DOWN_STR)) {
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if (inet_pton(AF_INET, dest_str, &dest_prefix.u.prefix4) > 0) {
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dest_prefix.family = AF_INET;
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dest_prefix.prefixlen = IPV4_MAX_PREFIXLEN;
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}
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#ifdef HAVE_IPV6
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else if (inet_pton(AF_INET6, dest_str, &dest_prefix.u.prefix6) > 0) {
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dest_prefix.family = AF_INET6;
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dest_prefix.prefixlen = IPV6_MAX_PREFIXLEN;
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}
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#endif /* HAVE_IPV6 */
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else {
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zlog_err("%s: Peer addr %s not found", __func__,
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dest_str);
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return -1;
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}
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memset(&src_prefix, 0, sizeof(struct prefix));
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if (strcmp(ZEBRA_PTM_INVALID_SRC_IP, src_str)) {
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if (inet_pton(AF_INET, src_str, &src_prefix.u.prefix4) > 0) {
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src_prefix.family = AF_INET;
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src_prefix.prefixlen = IPV4_MAX_PREFIXLEN;
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}
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#ifdef HAVE_IPV6
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else if (inet_pton(AF_INET6, src_str, &src_prefix.u.prefix6) > 0) {
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src_prefix.family = AF_INET6;
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src_prefix.prefixlen = IPV6_MAX_PREFIXLEN;
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}
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#endif /* HAVE_IPV6 */
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else {
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zlog_err("%s: Local addr %s not found", __func__,
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src_str);
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return -1;
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}
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}
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if_bfd_session_down(ifp, &dest_prefix, &src_prefix);
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}
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return 0;
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}
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static int
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zebra_ptm_handle_cbl_msg(void *arg, void *in_ctxt)
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{
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struct interface *ifp;
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char cbl_str[32];
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char port_str[128];
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ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_PORT_STR, port_str);
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if (port_str[0] == '\0') {
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zlog_debug("%s: Key %s not found in PTM msg", __func__,
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ZEBRA_PTM_PORT_STR);
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return 0;
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}
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ptm_lib_find_key_in_msg(in_ctxt, ZEBRA_PTM_CBL_STR, cbl_str);
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if (cbl_str[0] == '\0') {
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zlog_debug("%s: Key %s not found in PTM msg", __func__,
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ZEBRA_PTM_CBL_STR);
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return 0;
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}
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zlog_debug("%s: Recv Port [%s] cbl status [%s]", __func__,
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port_str, cbl_str);
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ifp = if_lookup_by_name(port_str);
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if (!ifp) {
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zlog_err("%s: %s not found in interface list", __func__, port_str);
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return -1;
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}
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if (!strcmp(cbl_str, ZEBRA_PTM_PASS_STR) && (!ifp->ptm_status)) {
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ifp->ptm_status = 1;
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if (ifp->ptm_enable && if_is_no_ptm_operative (ifp))
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if_up (ifp);
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} else if (!strcmp (cbl_str, ZEBRA_PTM_FAIL_STR) && (ifp->ptm_status)) {
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ifp->ptm_status = 0;
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if (ifp->ptm_enable && if_is_no_ptm_operative (ifp))
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if_down (ifp);
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}
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return 0;
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}
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int
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zebra_ptm_sock_write (struct thread *thread)
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{
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int sock;
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int nbytes;
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char *data;
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sock = THREAD_FD (thread);
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data = THREAD_ARG (thread);
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if (sock == -1)
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return -1;
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errno = 0;
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nbytes = send(sock, data, strlen(data), 0);
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if (nbytes <= 0) {
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if (errno && errno != EWOULDBLOCK && errno != EAGAIN) {
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zlog_warn ("%s routing socket error: %s", __func__,
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safe_strerror (errno));
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zebra_ptm_sock = -1;
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zebra_ptm_thread = thread_add_timer (zebrad.master, zebra_ptm_connect,
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NULL, zebra_ptm_reconnect_time);
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return (-1);
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}
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}
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zlog_debug ("%s: Sent message (%d) %s", __func__, strlen(data), data);
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zebra_ptm_thread = thread_add_read (zebrad.master, zebra_ptm_sock_read,
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NULL, sock);
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free (data);
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return(0);
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}
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int
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zebra_ptm_sock_read (struct thread *thread)
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{
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int sock, done = 0;
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int rc;
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char *rcvptr;
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errno = 0;
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sock = THREAD_FD (thread);
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if (sock == -1)
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return -1;
|
|
|
|
/* PTM communicates in CSV format */
|
|
while(!done) {
|
|
rcvptr = calloc(1, ZEBRA_PTM_MAX_SOCKBUF);
|
|
|
|
rc = ptm_lib_process_msg(ptm_hdl, sock, rcvptr, ZEBRA_PTM_MAX_SOCKBUF,
|
|
NULL);
|
|
if (rc <= 0)
|
|
break;
|
|
}
|
|
|
|
if (rc <= 0) {
|
|
if (((rc == 0) && !errno) || (errno && (errno != EWOULDBLOCK) && (errno != EAGAIN))) {
|
|
zlog_warn ("%s routing socket error: %s(%d) bytes %d", __func__,
|
|
safe_strerror (errno), errno, rc);
|
|
|
|
close (zebra_ptm_sock);
|
|
zebra_ptm_sock = -1;
|
|
zebra_ptm_thread = thread_add_timer (zebrad.master, zebra_ptm_connect,
|
|
NULL, zebra_ptm_reconnect_time);
|
|
return (-1);
|
|
}
|
|
}
|
|
|
|
free(rcvptr);
|
|
zebra_ptm_thread = thread_add_read (zebrad.master, zebra_ptm_sock_read,
|
|
NULL, sock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* BFD peer/dst register/update */
|
|
int
|
|
zebra_ptm_bfd_dst_register (struct zserv *client, int sock, u_short length,
|
|
int command)
|
|
{
|
|
char *data;
|
|
struct stream *s;
|
|
struct prefix src_p;
|
|
struct prefix dst_p;
|
|
u_char multi_hop;
|
|
u_char multi_hop_cnt;
|
|
u_char detect_mul;
|
|
unsigned int min_rx_timer;
|
|
unsigned int min_tx_timer;
|
|
char if_name[INTERFACE_NAMSIZ];
|
|
u_char len;
|
|
void *out_ctxt;
|
|
char buf[INET6_ADDRSTRLEN];
|
|
char tmp_buf[64];
|
|
int data_len = ZEBRA_PTM_SEND_MAX_SOCKBUF;
|
|
|
|
if (command == ZEBRA_BFD_DEST_UPDATE)
|
|
client->bfd_peer_upd8_cnt++;
|
|
else
|
|
client->bfd_peer_add_cnt++;
|
|
|
|
zlog_debug("bfd_dst_register msg from client %s: length=%d",
|
|
zebra_route_string(client->proto), length);
|
|
|
|
if (zebra_ptm_sock == -1)
|
|
{
|
|
zebra_ptm_thread = thread_add_timer (zebrad.master, zebra_ptm_connect,
|
|
NULL, zebra_ptm_reconnect_time);
|
|
return -1;
|
|
}
|
|
|
|
data = calloc(1, data_len);
|
|
if (!data)
|
|
{
|
|
zlog_debug("%s: Allocation of send data failed", __func__);
|
|
return -1;
|
|
}
|
|
|
|
ptm_lib_init_msg(ptm_hdl, 0, PTMLIB_MSG_TYPE_CMD, NULL, &out_ctxt);
|
|
sprintf(tmp_buf, "%s", ZEBRA_PTM_BFD_START_CMD);
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt, "cmd", tmp_buf);
|
|
sprintf(tmp_buf, "quagga");
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_CLIENT_FIELD,
|
|
tmp_buf);
|
|
sprintf(tmp_buf, "%d", zebra_ptm_pid);
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_SEQID_FIELD,
|
|
tmp_buf);
|
|
|
|
s = client->ibuf;
|
|
|
|
dst_p.family = stream_getw(s);
|
|
|
|
if (dst_p.family == AF_INET)
|
|
dst_p.prefixlen = IPV4_MAX_BYTELEN;
|
|
else
|
|
dst_p.prefixlen = IPV6_MAX_BYTELEN;
|
|
|
|
stream_get(&dst_p.u.prefix, s, dst_p.prefixlen);
|
|
if (dst_p.family == AF_INET)
|
|
{
|
|
inet_ntop(AF_INET, &dst_p.u.prefix4, buf, sizeof(buf));
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_DST_IP_FIELD, buf);
|
|
}
|
|
#ifdef HAVE_IPV6
|
|
else
|
|
{
|
|
inet_ntop(AF_INET6, &dst_p.u.prefix6, buf, sizeof(buf));
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_DST_IP_FIELD, buf);
|
|
}
|
|
#endif /* HAVE_IPV6 */
|
|
|
|
min_rx_timer = stream_getl(s);
|
|
sprintf(tmp_buf, "%d", min_rx_timer);
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_MIN_RX_FIELD,
|
|
tmp_buf);
|
|
min_tx_timer = stream_getl(s);
|
|
sprintf(tmp_buf, "%d", min_tx_timer);
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_MIN_TX_FIELD,
|
|
tmp_buf);
|
|
detect_mul = stream_getc(s);
|
|
sprintf(tmp_buf, "%d", detect_mul);
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_DETECT_MULT_FIELD,
|
|
tmp_buf);
|
|
|
|
multi_hop = stream_getc(s);
|
|
if (multi_hop)
|
|
{
|
|
sprintf(tmp_buf, "%d", 1);
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_MULTI_HOP_FIELD,
|
|
tmp_buf);
|
|
src_p.family = stream_getw(s);
|
|
|
|
if (src_p.family == AF_INET)
|
|
src_p.prefixlen = IPV4_MAX_BYTELEN;
|
|
else
|
|
src_p.prefixlen = IPV6_MAX_BYTELEN;
|
|
|
|
stream_get(&src_p.u.prefix, s, src_p.prefixlen);
|
|
if (src_p.family == AF_INET)
|
|
{
|
|
inet_ntop(AF_INET, &src_p.u.prefix4, buf, sizeof(buf));
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt,
|
|
ZEBRA_PTM_BFD_SRC_IP_FIELD, buf);
|
|
}
|
|
#ifdef HAVE_IPV6
|
|
else
|
|
{
|
|
inet_ntop(AF_INET6, &src_p.u.prefix6, buf, sizeof(buf));
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt,
|
|
ZEBRA_PTM_BFD_SRC_IP_FIELD, buf);
|
|
}
|
|
#endif /* HAVE_IPV6 */
|
|
|
|
multi_hop_cnt = stream_getc(s);
|
|
sprintf(tmp_buf, "%d", multi_hop_cnt);
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_MAX_HOP_CNT_FIELD,
|
|
tmp_buf);
|
|
}
|
|
else
|
|
{
|
|
#ifdef HAVE_IPV6
|
|
if (dst_p.family == AF_INET6)
|
|
{
|
|
src_p.family = stream_getw(s);
|
|
|
|
if (src_p.family == AF_INET)
|
|
src_p.prefixlen = IPV4_MAX_BYTELEN;
|
|
else
|
|
src_p.prefixlen = IPV6_MAX_BYTELEN;
|
|
|
|
stream_get(&src_p.u.prefix, s, src_p.prefixlen);
|
|
if (src_p.family == AF_INET)
|
|
{
|
|
inet_ntop(AF_INET, &src_p.u.prefix4, buf, sizeof(buf));
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt,
|
|
ZEBRA_PTM_BFD_SRC_IP_FIELD, buf);
|
|
}
|
|
else
|
|
{
|
|
inet_ntop(AF_INET6, &src_p.u.prefix6, buf, sizeof(buf));
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt,
|
|
ZEBRA_PTM_BFD_SRC_IP_FIELD, buf);
|
|
}
|
|
}
|
|
#endif /* HAVE_IPV6 */
|
|
len = stream_getc(s);
|
|
stream_get(if_name, s, len);
|
|
if_name[len] = '\0';
|
|
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_IFNAME_FIELD,
|
|
if_name);
|
|
}
|
|
|
|
ptm_lib_complete_msg(ptm_hdl, out_ctxt, data, &data_len);
|
|
zebra_ptm_thread = thread_add_write (zebrad.master, zebra_ptm_sock_write,
|
|
data, zebra_ptm_sock);
|
|
return 0;
|
|
}
|
|
|
|
/* BFD peer/dst deregister */
|
|
int
|
|
zebra_ptm_bfd_dst_deregister (struct zserv *client, int sock, u_short length)
|
|
{
|
|
char *data;
|
|
struct stream *s;
|
|
struct prefix src_p;
|
|
struct prefix dst_p;
|
|
u_char multi_hop;
|
|
char if_name[INTERFACE_NAMSIZ];
|
|
u_char len;
|
|
char buf[INET6_ADDRSTRLEN];
|
|
char tmp_buf[64];
|
|
int data_len = ZEBRA_PTM_SEND_MAX_SOCKBUF;
|
|
void *out_ctxt;
|
|
|
|
client->bfd_peer_del_cnt++;
|
|
|
|
zlog_debug("bfd_dst_deregister msg from client %s: length=%d",
|
|
zebra_route_string(client->proto), length);
|
|
|
|
if (zebra_ptm_sock == -1)
|
|
{
|
|
zebra_ptm_thread = thread_add_timer (zebrad.master, zebra_ptm_connect,
|
|
NULL, zebra_ptm_reconnect_time);
|
|
return -1;
|
|
}
|
|
|
|
data = calloc(1, data_len);
|
|
if (!data)
|
|
{
|
|
zlog_debug("%s: Allocation of send data failed", __func__);
|
|
return -1;
|
|
}
|
|
|
|
ptm_lib_init_msg(ptm_hdl, 0, PTMLIB_MSG_TYPE_CMD, NULL, &out_ctxt);
|
|
|
|
sprintf(tmp_buf, "%s", ZEBRA_PTM_BFD_STOP_CMD);
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt, "cmd", tmp_buf);
|
|
|
|
sprintf(tmp_buf, "%s", "quagga");
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_CLIENT_FIELD,
|
|
tmp_buf);
|
|
|
|
sprintf(tmp_buf, "%d", zebra_ptm_pid);
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_SEQID_FIELD,
|
|
tmp_buf);
|
|
|
|
s = client->ibuf;
|
|
|
|
dst_p.family = stream_getw(s);
|
|
|
|
if (dst_p.family == AF_INET)
|
|
dst_p.prefixlen = IPV4_MAX_BYTELEN;
|
|
else
|
|
dst_p.prefixlen = IPV6_MAX_BYTELEN;
|
|
|
|
stream_get(&dst_p.u.prefix, s, dst_p.prefixlen);
|
|
if (dst_p.family == AF_INET)
|
|
{
|
|
inet_ntop(AF_INET, &dst_p.u.prefix4, buf, sizeof(buf));
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_DST_IP_FIELD, buf);
|
|
}
|
|
#ifdef HAVE_IPV6
|
|
else
|
|
{
|
|
inet_ntop(AF_INET6, &dst_p.u.prefix6, buf, sizeof(buf));
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_DST_IP_FIELD, buf);
|
|
}
|
|
#endif /* HAVE_IPV6 */
|
|
|
|
multi_hop = stream_getc(s);
|
|
if (multi_hop)
|
|
{
|
|
sprintf(tmp_buf, "%d", 1);
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_MULTI_HOP_FIELD,
|
|
tmp_buf);
|
|
|
|
src_p.family = stream_getw(s);
|
|
|
|
if (src_p.family == AF_INET)
|
|
src_p.prefixlen = IPV4_MAX_BYTELEN;
|
|
else
|
|
src_p.prefixlen = IPV6_MAX_BYTELEN;
|
|
|
|
stream_get(&src_p.u.prefix, s, src_p.prefixlen);
|
|
if (src_p.family == AF_INET)
|
|
{
|
|
inet_ntop(AF_INET, &src_p.u.prefix4, buf, sizeof(buf));
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt,
|
|
ZEBRA_PTM_BFD_SRC_IP_FIELD, buf);
|
|
}
|
|
#ifdef HAVE_IPV6
|
|
else
|
|
{
|
|
inet_ntop(AF_INET6, &src_p.u.prefix6, buf, sizeof(buf));
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt,
|
|
ZEBRA_PTM_BFD_SRC_IP_FIELD, buf);
|
|
}
|
|
#endif /* HAVE_IPV6 */
|
|
}
|
|
else
|
|
{
|
|
#ifdef HAVE_IPV6
|
|
if (dst_p.family == AF_INET6)
|
|
{
|
|
src_p.family = stream_getw(s);
|
|
|
|
if (src_p.family == AF_INET)
|
|
src_p.prefixlen = IPV4_MAX_BYTELEN;
|
|
else
|
|
src_p.prefixlen = IPV6_MAX_BYTELEN;
|
|
|
|
stream_get(&src_p.u.prefix, s, src_p.prefixlen);
|
|
if (src_p.family == AF_INET)
|
|
{
|
|
inet_ntop(AF_INET, &src_p.u.prefix4, buf, sizeof(buf));
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt,
|
|
ZEBRA_PTM_BFD_SRC_IP_FIELD, buf);
|
|
}
|
|
else
|
|
{
|
|
inet_ntop(AF_INET6, &src_p.u.prefix6, buf, sizeof(buf));
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt,
|
|
ZEBRA_PTM_BFD_SRC_IP_FIELD, buf);
|
|
}
|
|
}
|
|
#endif /* HAVE_IPV6 */
|
|
|
|
len = stream_getc(s);
|
|
stream_get(if_name, s, len);
|
|
if_name[len] = '\0';
|
|
|
|
ptm_lib_append_msg(ptm_hdl, out_ctxt, ZEBRA_PTM_BFD_IFNAME_FIELD,
|
|
if_name);
|
|
}
|
|
|
|
ptm_lib_complete_msg(ptm_hdl, out_ctxt, data, &data_len);
|
|
zebra_ptm_thread = thread_add_write (zebrad.master, zebra_ptm_sock_write,
|
|
data, zebra_ptm_sock);
|
|
return 0;
|
|
}
|