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b300c8bbcf
Export netlink_lsp_msg_encoder() and use it to encode and send netlink messages concerning LSP updates to connected FPMs. Signed-off-by: Duncan Eastoe <duncan.eastoe@att.com>
89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
/* MPLS forwarding table updates using netlink over GNU/Linux system.
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* Copyright (C) 2016 Cumulus Networks, Inc.
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*
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* This file is part of Quagga.
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*
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* Quagga 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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* Quagga 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 along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <zebra.h>
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#ifdef HAVE_NETLINK
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#include "zebra/debug.h"
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#include "zebra/rt.h"
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#include "zebra/rt_netlink.h"
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#include "zebra/zebra_mpls.h"
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#include "zebra/kernel_netlink.h"
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ssize_t netlink_lsp_msg_encoder(struct zebra_dplane_ctx *ctx, void *buf,
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size_t buflen)
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{
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int cmd;
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/* Call to netlink layer based on type of update */
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if (dplane_ctx_get_op(ctx) == DPLANE_OP_LSP_DELETE) {
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cmd = RTM_DELROUTE;
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} else if (dplane_ctx_get_op(ctx) == DPLANE_OP_LSP_INSTALL ||
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dplane_ctx_get_op(ctx) == DPLANE_OP_LSP_UPDATE) {
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/* Validate */
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if (dplane_ctx_get_best_nhlfe(ctx) == NULL) {
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if (IS_ZEBRA_DEBUG_KERNEL || IS_ZEBRA_DEBUG_MPLS)
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zlog_debug("LSP in-label %u: update fails, no best NHLFE",
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dplane_ctx_get_in_label(ctx));
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return -1;
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}
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cmd = RTM_NEWROUTE;
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} else
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/* Invalid op? */
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return -1;
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return netlink_mpls_multipath_msg_encode(cmd, ctx, buf, buflen);
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}
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enum netlink_msg_status netlink_put_lsp_update_msg(struct nl_batch *bth,
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struct zebra_dplane_ctx *ctx)
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{
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return netlink_batch_add_msg(bth, ctx, netlink_lsp_msg_encoder, false);
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}
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/*
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* Pseudowire update api - not supported by netlink as of 12/18,
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* but note that the default has been to report 'success' for pw updates
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* on unsupported platforms.
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*/
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enum netlink_msg_status netlink_put_pw_update_msg(struct nl_batch *bth,
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struct zebra_dplane_ctx *ctx)
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{
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return FRR_NETLINK_SUCCESS;
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}
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int mpls_kernel_init(void)
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{
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struct stat st;
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/*
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* Check if the MPLS module is loaded in the kernel.
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*/
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if (stat("/proc/sys/net/mpls", &st) != 0)
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return -1;
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return 0;
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};
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#endif /* HAVE_NETLINK */
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