Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #include <linux/unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/if_ether.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <net/if.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/if_packet.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <arpa/inet.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) static inline int open_raw_sock(const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	struct sockaddr_ll sll;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	int sock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	sock = socket(PF_PACKET, SOCK_RAW | SOCK_NONBLOCK | SOCK_CLOEXEC, htons(ETH_P_ALL));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	if (sock < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 		printf("cannot create raw socket\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	memset(&sll, 0, sizeof(sll));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	sll.sll_family = AF_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	sll.sll_ifindex = if_nametoindex(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	sll.sll_protocol = htons(ETH_P_ALL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	if (bind(sock, (struct sockaddr *)&sll, sizeof(sll)) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		printf("bind to %s: %s\n", name, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		close(sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	return sock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) }