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/*
* Copyright (c) 2023-2025 Ian Marco Moffett and the Osmora Team.
* 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.
* 3. Neither the name of Hyra nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* 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 OWNER 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 <sys/socket.h>
#include <netinet/in.h>
#include <linux/if_packet.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <stdlib.h>
#include <string.h>
#include "if_ether.h"
#include "dgram.h"
tx_len_t
dgram_send(struct onet_link *link, void *buf, uint16_t len)
{
struct sockaddr_ll saddr;
struct ether_hdr *eth;
struct onet_dgram *dgram;
size_t dgram_len;
char *p, *data;
dgram_len = DGRAM_LEN(len);
p = malloc(dgram_len);
if (p == NULL) {
return -1;
}
eth = (struct ether_hdr *)p;
data = DGRAM_DATA(p);
dgram = DGRAM_HDR(p);
/* Copy data to send buffer */
memset(data, 0, len);
memcpy(data, buf, len);
/*
* Set up link layer sockaddr, load up the frame, datagram
* and send it off.
*/
saddr.sll_ifindex = link->iface_idx;
saddr.sll_halen = HW_ADDR_LEN;
ether_load_route(link->hwaddr, 0xFFFFFFFFFFFF, eth);
dgram_load(len, 50, dgram);
sendto(
link->sockfd, p, dgram_len, 0,
(struct sockaddr *)&saddr, sizeof(struct sockaddr_ll)
);
free(p);
return len;
}
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