batman-adv: Add debugfs table for mcast flags (4e3e823b) · Commits · 戴 / test

net/batman-adv/debugfs.c

+23 −0

Original line number	Diff line number	Diff line
		@@ -48,6 +48,7 @@
		#include "distributed-arp-table.h"
		#include "gateway_client.h"
		#include "icmp_socket.h"
		#include "multicast.h"
		#include "network-coding.h"
		#include "originator.h"
		#include "translation-table.h"
		@@ -363,6 +364,22 @@ static int batadv_nc_nodes_open(struct inode inode, struct file file)
		}
		#endif

		#ifdef CONFIG_BATMAN_ADV_MCAST
		/**
		* batadv_mcast_flags_open - prepare file handler for reads from mcast_flags
		* @inode: inode which was opened
		* @file: file handle to be initialized
		*
		* Return: 0 on success or negative error number in case of failure
		*/
		static int batadv_mcast_flags_open(struct inode inode, struct file file)
		{
		struct net_device net_dev = (struct net_device )inode->i_private;

		return single_open(file, batadv_mcast_flags_seq_print_text, net_dev);
		}
		#endif

		#define BATADV_DEBUGINFO(_name, _mode, _open) \
		struct batadv_debuginfo batadv_debuginfo_##_name = { \
		.attr = { \
		@@ -407,6 +424,9 @@ static BATADV_DEBUGINFO(transtable_local, S_IRUGO,
		#ifdef CONFIG_BATMAN_ADV_NC
		static BATADV_DEBUGINFO(nc_nodes, S_IRUGO, batadv_nc_nodes_open);
		#endif
		#ifdef CONFIG_BATMAN_ADV_MCAST
		static BATADV_DEBUGINFO(mcast_flags, S_IRUGO, batadv_mcast_flags_open);
		#endif

		static struct batadv_debuginfo *batadv_mesh_debuginfos[] = {
		&batadv_debuginfo_neighbors,
		@@ -423,6 +443,9 @@ static struct batadv_debuginfo *batadv_mesh_debuginfos[] = {
		&batadv_debuginfo_transtable_local,
		#ifdef CONFIG_BATMAN_ADV_NC
		&batadv_debuginfo_nc_nodes,
		#endif
		#ifdef CONFIG_BATMAN_ADV_MCAST
		&batadv_debuginfo_mcast_flags,
		#endif
		NULL,
		};

net/batman-adv/multicast.c

+104 −0

Original line number	Diff line number	Diff line
		@@ -41,6 +41,7 @@
		#include <linux/printk.h>
		#include <linux/rculist.h>
		#include <linux/rcupdate.h>
		#include <linux/seq_file.h>
		#include <linux/skbuff.h>
		#include <linux/slab.h>
		#include <linux/spinlock.h>
		@@ -52,6 +53,8 @@
		#include <net/ip.h>
		#include <net/ipv6.h>

		#include "hard-interface.h"
		#include "hash.h"
		#include "packet.h"
		#include "translation-table.h"

		@@ -1129,6 +1132,107 @@ void batadv_mcast_init(struct batadv_priv *bat_priv)
		BATADV_TVLV_HANDLER_OGM_CIFNOTFND);
		}

		/**
		* batadv_mcast_flags_print_header - print own mcast flags to debugfs table
		* @bat_priv: the bat priv with all the soft interface information
		* @seq: debugfs table seq_file struct
		*
		* Prints our own multicast flags including a more specific reason why
		* they are set, that is prints the bridge and querier state too, to
		* the debugfs table specified via @seq.
		*/
		static void batadv_mcast_flags_print_header(struct batadv_priv *bat_priv,
		struct seq_file *seq)
		{
		u8 flags = bat_priv->mcast.flags;
		char querier4, querier6, shadowing4, shadowing6;
		bool bridged = bat_priv->mcast.bridged;

		if (bridged) {
		querier4 = bat_priv->mcast.querier_ipv4.exists ? '.' : '4';
		querier6 = bat_priv->mcast.querier_ipv6.exists ? '.' : '6';
		shadowing4 = bat_priv->mcast.querier_ipv4.shadowing ? '4' : '.';
		shadowing6 = bat_priv->mcast.querier_ipv6.shadowing ? '6' : '.';
		} else {
		querier4 = '?';
		querier6 = '?';
		shadowing4 = '?';
		shadowing6 = '?';
		}

		seq_printf(seq, "Multicast flags (own flags: [%c%c%c])\n",
		(flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES) ? 'U' : '.',
		(flags & BATADV_MCAST_WANT_ALL_IPV4) ? '4' : '.',
		(flags & BATADV_MCAST_WANT_ALL_IPV6) ? '6' : '.');
		seq_printf(seq, "* Bridged [U]\t\t\t\t%c\n", bridged ? 'U' : '.');
		seq_printf(seq, "* No IGMP/MLD Querier [4/6]:\t\t%c/%c\n",
		querier4, querier6);
		seq_printf(seq, "* Shadowing IGMP/MLD Querier [4/6]:\t%c/%c\n",
		shadowing4, shadowing6);
		seq_puts(seq, "-------------------------------------------\n");
		seq_printf(seq, " %-10s %s\n", "Originator", "Flags");
		}

		/**
		* batadv_mcast_flags_seq_print_text - print the mcast flags of other nodes
		* @seq: seq file to print on
		* @offset: not used
		*
		* This prints a table of (primary) originators and their according
		* multicast flags, including (in the header) our own.
		*
		* Return: always 0
		*/
		int batadv_mcast_flags_seq_print_text(struct seq_file seq, void offset)
		{
		struct net_device net_dev = (struct net_device )seq->private;
		struct batadv_priv *bat_priv = netdev_priv(net_dev);
		struct batadv_hard_iface *primary_if;
		struct batadv_hashtable *hash = bat_priv->orig_hash;
		struct batadv_orig_node *orig_node;
		struct hlist_head *head;
		u8 flags;
		u32 i;

		primary_if = batadv_seq_print_text_primary_if_get(seq);
		if (!primary_if)
		return 0;

		batadv_mcast_flags_print_header(bat_priv, seq);

		for (i = 0; i < hash->size; i++) {
		head = &hash->table[i];

		rcu_read_lock();
		hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
		if (!test_bit(BATADV_ORIG_CAPA_HAS_MCAST,
		&orig_node->capa_initialized))
		continue;

		if (!test_bit(BATADV_ORIG_CAPA_HAS_MCAST,
		&orig_node->capabilities)) {
		seq_printf(seq, "%pM -\n", orig_node->orig);
		continue;
		}

		flags = orig_node->mcast_flags;

		seq_printf(seq, "%pM [%c%c%c]\n", orig_node->orig,
		(flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES)
		? 'U' : '.',
		(flags & BATADV_MCAST_WANT_ALL_IPV4)
		? '4' : '.',
		(flags & BATADV_MCAST_WANT_ALL_IPV6)
		? '6' : '.');
		}
		rcu_read_unlock();
		}

		batadv_hardif_put(primary_if);

		return 0;
		}

		/**
		* batadv_mcast_free - free the multicast optimizations structures
		* @bat_priv: the bat priv with all the soft interface information

net/batman-adv/multicast.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -20,6 +20,7 @@

		#include "main.h"

		struct seq_file;
		struct sk_buff;

		/**
		@@ -46,6 +47,8 @@ batadv_mcast_forw_mode(struct batadv_priv bat_priv, struct sk_buff skb,

		void batadv_mcast_init(struct batadv_priv *bat_priv);

		int batadv_mcast_flags_seq_print_text(struct seq_file seq, void offset);

		void batadv_mcast_free(struct batadv_priv *bat_priv);

		void batadv_mcast_purge_orig(struct batadv_orig_node *orig_node);

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