Move print_bits to ifconfig.c and make available to other src files.

Reviewed by:	emaste
Event:		Kitchener-Waterloo Hackathon 202406
Differential Revision:	https://reviews.freebsd.org/D45441

sbin/ifconfig/ifconfig.c

@@ -1877,6 +1877,29 @@ Perror(const char *cmd)
 	Perrorc(cmd, errno);
 }
 
+void
+print_bits(const char *btype, uint32_t *v, const int v_count,
+    const char **names, const int n_count)
+{
+	int num = 0;
+
+	for (int i = 0; i < v_count * 32; i++) {
+		bool is_set = v[i / 32] & (1U << (i % 32));
+		if (is_set) {
+			if (num++ == 0)
+				printf("<");
+			if (num != 1)
+				printf(",");
+			if (i < n_count)
+				printf("%s", names[i]);
+			else
+				printf("%s_%d", btype, i);
+		}
+	}
+	if (num > 0)
+		printf(">");
+}
+
 /*
  * Print a value a la the %b format of the kernel's printf
  */

sbin/ifconfig/ifconfig.h

@@ -260,6 +260,8 @@ void	setifcap(if_ctx *ctx, const char *, int value);
 void	setifcapnv(if_ctx *ctx, const char *vname, const char *arg);
 
 void	Perror(const char *cmd);
+void	print_bits(const char *btype, uint32_t *v, const int v_count,
+		const char **names, const int n_count);
 void	printb(const char *s, unsigned value, const char *bits);
 
 void	ifmaybeload(struct ifconfig_args *args, const char *name);

sbin/ifconfig/ifconfig_netlink.c

@@ -81,29 +81,6 @@ static const char	*IFFBITS[] = {
 	"LOWER_UP",		/* 24:0x1000000 IFF_NETLINK_1*/
 };
 
-static void
-print_bits(const char *btype, uint32_t *v, const int v_count,
-    const char **names, const int n_count)
-{
-	int num = 0;
-
-	for (int i = 0; i < v_count * 32; i++) {
-		bool is_set = v[i / 32] & (1U << (i % 32));
-		if (is_set) {
-			if (num++ == 0)
-				printf("<");
-			if (num != 1)
-				printf(",");
-			if (i < n_count)
-				printf("%s", names[i]);
-			else
-				printf("%s_%d", btype, i);
-		}
-	}
-	if (num > 0)
-		printf(">");
-}
-
 static void
 nl_init_socket(struct snl_state *ss)
 {