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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:24:08 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:24:08 +0000
commitf449f278dd3c70e479a035f50a9bb817a9b433ba (patch)
tree8ca2bfb785dda9bb4d573acdf9b42aea9cd51383 /src/utils/kxdpgun/ip_route.h
parentInitial commit. (diff)
downloadknot-f449f278dd3c70e479a035f50a9bb817a9b433ba.tar.xz
knot-f449f278dd3c70e479a035f50a9bb817a9b433ba.zip
Adding upstream version 3.2.6.upstream/3.2.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/utils/kxdpgun/ip_route.h')
-rw-r--r--src/utils/kxdpgun/ip_route.h46
1 files changed, 46 insertions, 0 deletions
diff --git a/src/utils/kxdpgun/ip_route.h b/src/utils/kxdpgun/ip_route.h
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+/* Copyright (C) 2022 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+ 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 3 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. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <sys/socket.h>
+
+/*!
+ * \brief Get route to an IPv4/6 from system routing table.
+ *
+ * \param ip IPv4 or IPv6 to search route to.
+ * \param via Out: gateway (first hop) on the route, or AF_UNSPEC if same subnet.
+ * \param src Out: local outgoing IP address on the route.
+ * \param dev Out: local network interface on the route (you must pre-allocate IFNAMSIZ bytes!).
+ *
+ * \return 0 on success, negative errno otherwise.
+ */
+int ip_route_get(const struct sockaddr_storage *ip,
+ struct sockaddr_storage *via,
+ struct sockaddr_storage *src,
+ char *dev);
+
+/*!
+ * \brief Obtain neighbour's MAC addr from system neighbour table.
+ *
+ * \param ip IPv4 or IPv6 of the neighbour in question.
+ * \param dummy_sendto Attempt sendto() to target IP in order to let the system fill the neighbour table.
+ * \param mac Out: MAC address of the neighbour (you must pre-allocate ETH_ALEN bytes!).
+ *
+ * \return 0 on success, -ENOENT if neighbour not found, negative errno otherwise.
+ */
+int ip_neigh_get(const struct sockaddr_storage *ip, bool dummy_sendto, uint8_t *mac);