irq: break out from xutils and save + restore

Break out IRQ functionality from xutils, simplify it, and
save + restore IRQ affinity list.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>

1 files changed, 0 insertions, 108 deletions

diff --git a/xutils.c b/xutils.c
index 5421d7d..a5fbb3c 100644
--- a/xutils.c
+++ b/xutils.c
@@ -608,114 +608,6 @@ void device_set_flags(const char *ifname, const short flags)
 	close(sock);
 }
 
-int device_irq_number(const char *ifname)
-{
-	/*
-	 * Since fetching IRQ numbers from SIOCGIFMAP is deprecated and not
-	 * supported anymore, we need to grab them from procfs
-	 */
-	int irq = 0;
-	char *buffp;
-	char buff[512];
-	char sysname[512];
-	FILE *fp;
-
-	if (!strncmp("lo", ifname, strlen("lo")))
-		return 0;
-
-	fp = fopen("/proc/interrupts", "r");
-	if (!fp)
-		panic("Cannot open /proc/interrupts!\n");
-
-	memset(buff, 0, sizeof(buff));
-	while (fgets(buff, sizeof(buff), fp) != NULL) {
-		buff[sizeof(buff) - 1] = 0;
-
-		if (strstr(buff, ifname) == NULL)
-			continue;
-
-		buffp = buff;
-		while (*buffp != ':')
-			buffp++;
-		*buffp = 0;
-		irq = atoi(buff);
-
-		memset(buff, 0, sizeof(buff));
-	}
-
-	fclose(fp);
-
-	if (irq != 0)
-		return irq;
-	/* 
-	 * Try sysfs as fallback. Probably wireless devices will be found
-	 * here. We return silently if it fails ...
-	 */
-	slprintf(sysname, sizeof(sysname), "/sys/class/net/%s/device/irq",
-		 ifname);
-
-	fp = fopen(sysname, "r");
-	if (!fp)
-		return -ENOENT;
-
-	memset(buff, 0, sizeof(buff));
-	if(fgets(buff, sizeof(buff), fp) != NULL) {
-		buff[sizeof(buff) - 1] = 0;
-		irq = atoi(buff);
-	}
-
-	fclose(fp);
-
-	return irq;
-}
-
-int device_set_irq_affinity_list(int irq, unsigned long from, unsigned long to)
-{
-	int ret, fd;
-	char file[256], list[64];
-
-	slprintf(file, sizeof(file), "/proc/irq/%d/smp_affinity_list", irq);
-	slprintf(list, sizeof(list), "%lu-%lu\n", from, to);
-
-	fd = open(file, O_WRONLY);
-	if (fd < 0)
-		return -ENOENT;
-
-	ret = write(fd, list, strlen(list));
-
-	close(fd);
-	return ret;
-}
-
-int device_bind_irq_to_cpu(int irq, int cpu)
-{
-	int ret;
-	char buff[256];
-	char file[256];
-	FILE *fp;
-
-	/* Note: first CPU begins with CPU 0 */
-	if (irq < 0 || cpu < 0)
-		return -EINVAL;
-
-	memset(file, 0, sizeof(file));
-	memset(buff, 0, sizeof(buff));
-
-	/* smp_affinity starts counting with CPU 1, 2, ... */
-	cpu = cpu + 1;
-	sprintf(file, "/proc/irq/%d/smp_affinity", irq);
-
-	fp = fopen(file, "w");
-	if (!fp)
-		return -ENOENT;
-
-	sprintf(buff, "%d", cpu);
-	ret = fwrite(buff, sizeof(buff), 1, fp);
-
-	fclose(fp);
-	return (ret > 0 ? 0 : ret);
-}
-
 void sock_print_net_stats(int sock)
 {
 	int ret;