int pcap_setup()

in drivers/pcap_kern.c [53:95]

• 38 lines of code
• 9 McCabe index (conditional complexity)

int pcap_setup(char *str, char **mac_out, void *data)
{
	struct pcap_init *init = data;
	char *remain, *host_if = NULL, *options[2] = { NULL, NULL };
	int i;

	*init = ((struct pcap_init)
		{ .host_if 	= "eth0",
		  .promisc 	= 1,
		  .optimize 	= 0,
		  .filter 	= NULL });

	remain = split_if_spec(str, &host_if, &init->filter,
			       &options[0], &options[1], mac_out, NULL);
	if (remain != NULL) {
		printk(KERN_ERR "pcap_setup - Extra garbage on "
		       "specification : '%s'\n", remain);
		return 0;
	}

	if (host_if != NULL)
		init->host_if = host_if;

	for (i = 0; i < ARRAY_SIZE(options); i++) {
		if (options[i] == NULL)
			continue;
		if (!strcmp(options[i], "promisc"))
			init->promisc = 1;
		else if (!strcmp(options[i], "nopromisc"))
			init->promisc = 0;
		else if (!strcmp(options[i], "optimize"))
			init->optimize = 1;
		else if (!strcmp(options[i], "nooptimize"))
			init->optimize = 0;
		else {
			printk(KERN_ERR "pcap_setup : bad option - '%s'\n",
			       options[i]);
			return 0;
		}
	}

	return 1;
}