net: procfs: add seq_puts() statement for dev_mcast

Add seq_puts() statement for dev_mcast, make it more readable.
As also, keep vertical alignment for {dev, ptype, dev_mcast} that
under /proc/net.
Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/core/net-procfs.c

@@ -77,8 +77,8 @@ static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev)
 	struct rtnl_link_stats64 temp;
 	const struct rtnl_link_stats64 *stats = dev_get_stats(dev, &temp);
 
-	seq_printf(seq, "%6s: %7llu %7llu %4llu %4llu %4llu %5llu %10llu %9llu "
-		   "%8llu %7llu %4llu %4llu %4llu %5llu %7llu %10llu\n",
+	seq_printf(seq, "%9s: %16llu %12llu %4llu %6llu %4llu %5llu %10llu %9llu "
+		   "%16llu %12llu %4llu %6llu %4llu %5llu %7llu %10llu\n",
 		   dev->name, stats->rx_bytes, stats->rx_packets,
 		   stats->rx_errors,
 		   stats->rx_dropped + stats->rx_missed_errors,
@@ -103,11 +103,11 @@ static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev)
 static int dev_seq_show(struct seq_file *seq, void *v)
 {
 	if (v == SEQ_START_TOKEN)
-		seq_puts(seq, "Inter-|   Receive                            "
+		seq_puts(seq, "Interface|                            Receive                   "
 			      "                    |                                 Transmit\n"
-			      " face |bytes    packets errs drop fifo frame "
-			      "compressed multicast|bytes    packets errs "
-			      "drop fifo colls carrier compressed\n");
+			      "         |            bytes      packets errs   drop fifo frame "
+			      "compressed multicast|            bytes      packets errs "
+			      "  drop fifo colls carrier compressed\n");
 	else
 		dev_seq_printf_stats(seq, v);
 	return 0;
@@ -266,7 +266,7 @@ static int ptype_seq_show(struct seq_file *seq, void *v)
 		else
 			seq_printf(seq, "%04x", ntohs(pt->type));
 
-		seq_printf(seq, " %-8s %ps\n",
+		seq_printf(seq, "      %-9s   %ps\n",
 			   pt->dev ? pt->dev->name : "", pt->func);
 	}
 
@@ -327,12 +327,14 @@ static int dev_mc_seq_show(struct seq_file *seq, void *v)
 	struct netdev_hw_addr *ha;
 	struct net_device *dev = v;
 
-	if (v == SEQ_START_TOKEN)
+	if (v == SEQ_START_TOKEN) {
+		seq_puts(seq, "Ifindex Interface Refcount Global_use Address\n");
 		return 0;
+	}
 
 	netif_addr_lock_bh(dev);
 	netdev_for_each_mc_addr(ha, dev) {
-		seq_printf(seq, "%-4d %-15s %-5d %-5d %*phN\n",
+		seq_printf(seq, "%-7d %-9s %-8d %-10d %*phN\n",
 			   dev->ifindex, dev->name,
 			   ha->refcount, ha->global_use,
 			   (int)dev->addr_len, ha->addr);