Move send functions to a new source file

1 files changed, 79 insertions, 0 deletions

diff --git a/src/send.c b/src/send.c
new file mode 100644
index 0000000..5f06218
--- /dev/null
+++ b/src/send.c
@@ -0,0 +1,79 @@
+/*
+  Copyright (c) 2013, Matthias Schiffer <mschiffer@universe-factory.net>
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    1. Redistributions of source code must retain the above copyright notice,
+       this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright notice,
+       this list of conditions and the following disclaimer in the documentation
+       and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+#include "babel.h"
+#include "neigh.h"
+#include "packet.h"
+#include "tlv.h"
+#include "tlv_types.h"
+
+#include <alloca.h>
+
+
+static void add_ihus(gmrf_t *gmrf, gp_babel_packet_t *packet, size_t max_len, const gp_babel_iface_t *iface) {
+	const gp_babel_neigh_t *neigh;
+
+	for (neigh = iface->neighbours; neigh; neigh = neigh->next) {
+		gp_babel_tlv_ihu_t *ihu = gp_babel_tlv_add(packet, GP_BABEL_PACKET_MAX, TLV_IHU, sizeof(gp_babel_tlv_ihu_t)+sizeof(gmrf_addr_t));
+		if (!ihu)
+			return;
+
+		ihu->ae = ADDR_ENC_GMRF;
+		ihu->reserved = 0;
+		ihu->rxcost = htons(gp_babel_neigh_get_rxcost(gmrf, neigh));
+		ihu->interval = htons(GP_BABEL_IHU_INTERVAL);
+		memcpy(ihu->address, &neigh->addr, sizeof(gmrf_addr_t));
+	}
+}
+
+void gp_babel_send_hellos(gmrf_t *gmrf, gmrf_context_t *ctx) {
+	gmrf_logf(gmrf, LOG_DEBUG, "sending hellos...");
+
+	gp_babel_packet_t *packet = alloca(sizeof(gp_babel_packet_t)+GP_BABEL_PACKET_MAX);
+
+	packet->version = htons(GP_BABEL_VERSION);
+	packet->len = 0;
+
+	gp_babel_tlv_hello_t *hello = gp_babel_tlv_add(packet, GP_BABEL_PACKET_MAX, TLV_HELLO, sizeof(gp_babel_tlv_hello_t));
+	if (!hello)
+		return;
+
+	hello->reserved = 0;
+	hello->interval = htons(GP_BABEL_HELLO_INTERVAL);
+
+	uint16_t len = packet->len;
+
+	gp_babel_iface_t *iface;
+	for (iface = ctx->interfaces; iface; iface = iface->next) {
+		hello->seqno = htons(iface->seqno++);
+
+		packet->len = len;
+
+		add_ihus(gmrf, packet, GP_BABEL_PACKET_MAX, iface);
+
+		gmrf_iface_send_bc(gmrf, iface->gmrf_iface, packet, gp_babel_packet_size(packet));
+	}
+}