Commit ff2ebbfb authored by Hoang Le's avatar Hoang Le Committed by David S. Miller
Browse files

tipc: introduce new capability flag for cluster 



As a preparation for introducing a smooth switching between replicast
and broadcast method for multicast message, We have to introduce a new
capability flag TIPC_MCAST_RBCTL to handle this new feature.

During a cluster upgrade a node can come back with this new capabilities
which also must be reflected in the cluster capabilities field.
The new feature is only applicable if all node in the cluster supports
this new capability.

Acked-by: default avatarJon Maloy <jon.maloy@ericsson.com>
Signed-off-by: default avatarHoang Le <hoang.h.le@dektech.com.au>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 02ec6caf

net/tipc/core.c

+2 −0
Original line number Diff line number Diff line
@@ -43,6 +43,7 @@ 
#include "net.h"

#include "socket.h"

#include "bcast.h"

#include "node.h"



#include <linux/module.h>
@@ -59,6 +60,7 @@ static int __net_init tipc_init_net(struct net *net) 
	tn->node_addr = 0;

	tn->trial_addr = 0;

	tn->addr_trial_end = 0;

	tn->capabilities = TIPC_NODE_CAPABILITIES;

	memset(tn->node_id, 0, sizeof(tn->node_id));

	memset(tn->node_id_string, 0, sizeof(tn->node_id_string));

	tn->mon_threshold = TIPC_DEF_MON_THRESHOLD;

net/tipc/core.h

+3 −0
Original line number Diff line number Diff line
@@ -122,6 +122,9 @@ struct tipc_net { 
	/* Topology subscription server */

	struct tipc_topsrv *topsrv;

	atomic_t subscription_count;



	/* Cluster capabilities */

	u16 capabilities;

};



static inline struct tipc_net *tipc_net(struct net *net)

net/tipc/node.c

+18 −0
Original line number Diff line number Diff line
@@ -383,6 +383,11 @@ static struct tipc_node *tipc_node_create(struct net *net, u32 addr, 
				tipc_link_update_caps(l, capabilities);

		}

		write_unlock_bh(&n->lock);

		/* Calculate cluster capabilities */

		tn->capabilities = TIPC_NODE_CAPABILITIES;

		list_for_each_entry_rcu(temp_node, &tn->node_list, list) {

			tn->capabilities &= temp_node->capabilities;

		}

		goto exit;

	}

	n = kzalloc(sizeof(*n), GFP_ATOMIC);
@@ -433,6 +438,11 @@ static struct tipc_node *tipc_node_create(struct net *net, u32 addr, 
			break;

	}

	list_add_tail_rcu(&n->list, &temp_node->list);

	/* Calculate cluster capabilities */

	tn->capabilities = TIPC_NODE_CAPABILITIES;

	list_for_each_entry_rcu(temp_node, &tn->node_list, list) {

		tn->capabilities &= temp_node->capabilities;

	}

	trace_tipc_node_create(n, true, " ");

exit:

	spin_unlock_bh(&tn->node_list_lock);
@@ -589,6 +599,7 @@ static void tipc_node_clear_links(struct tipc_node *node) 
 */

static bool tipc_node_cleanup(struct tipc_node *peer)

{

	struct tipc_node *temp_node;

	struct tipc_net *tn = tipc_net(peer->net);

	bool deleted = false;
@@ -604,6 +615,13 @@ static bool tipc_node_cleanup(struct tipc_node *peer) 
		deleted = true;

	}

	tipc_node_write_unlock(peer);



	/* Calculate cluster capabilities */

	tn->capabilities = TIPC_NODE_CAPABILITIES;

	list_for_each_entry_rcu(temp_node, &tn->node_list, list) {

		tn->capabilities &= temp_node->capabilities;

	}



	spin_unlock_bh(&tn->node_list_lock);

	return deleted;

}

net/tipc/node.h

+4 −2
Original line number Diff line number Diff line
@@ -51,7 +51,8 @@ enum { 
	TIPC_BLOCK_FLOWCTL    = (1 << 3),

	TIPC_BCAST_RCAST      = (1 << 4),

	TIPC_NODE_ID128       = (1 << 5),

	TIPC_LINK_PROTO_SEQNO = (1 << 6)

	TIPC_LINK_PROTO_SEQNO = (1 << 6),

	TIPC_MCAST_RBCTL      = (1 << 7)

};



#define TIPC_NODE_CAPABILITIES (TIPC_SYN_BIT           |  \
@@ -60,7 +61,8 @@ enum { 
				TIPC_BCAST_RCAST       |   \

				TIPC_BLOCK_FLOWCTL     |   \

				TIPC_NODE_ID128        |   \

				TIPC_LINK_PROTO_SEQNO)

				TIPC_LINK_PROTO_SEQNO  |   \

				TIPC_MCAST_RBCTL)

#define INVALID_BEARER_ID -1



void tipc_node_stop(struct net *net);

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