Commit a1be5a20 authored by GhantaKrishnamurthy MohanKrishna's avatar GhantaKrishnamurthy MohanKrishna Committed by David S. Miller
Browse files

tipc: extend sock diag for group communication 



This commit extends the existing TIPC socket diagnostics framework
for information related to TIPC group communication.

Acked-by: default avatarYing Xue <ying.xue@windriver.com>
Acked-by: default avatarJon Maloy <jon.maloy@ericsson.com>
Signed-off-by: default avatarGhantaKrishnamurthy MohanKrishna <mohan.krishna.ghanta.krishnamurthy@ericsson.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6a939f36

include/uapi/linux/tipc_netlink.h

+14 −0
Original line number Diff line number Diff line
@@ -121,6 +121,7 @@ enum { 
	TIPC_NLA_SOCK_TIPC_STATE,	/* u32 */

	TIPC_NLA_SOCK_COOKIE,		/* u64 */

	TIPC_NLA_SOCK_PAD,		/* flag */

	TIPC_NLA_SOCK_GROUP,		/* nest */



	__TIPC_NLA_SOCK_MAX,

	TIPC_NLA_SOCK_MAX = __TIPC_NLA_SOCK_MAX - 1
@@ -233,6 +234,19 @@ enum { 
	TIPC_NLA_MON_PEER_MAX = __TIPC_NLA_MON_PEER_MAX - 1

};



/* Nest, socket group info */

enum {

	TIPC_NLA_SOCK_GROUP_ID,			/* u32 */

	TIPC_NLA_SOCK_GROUP_OPEN,		/* flag */

	TIPC_NLA_SOCK_GROUP_NODE_SCOPE,		/* flag */

	TIPC_NLA_SOCK_GROUP_CLUSTER_SCOPE,	/* flag */

	TIPC_NLA_SOCK_GROUP_INSTANCE,		/* u32 */

	TIPC_NLA_SOCK_GROUP_BC_SEND_NEXT,	/* u32 */



	__TIPC_NLA_SOCK_GROUP_MAX,

	TIPC_NLA_SOCK_GROUP_MAX = __TIPC_NLA_SOCK_GROUP_MAX - 1

};



/* Nest, connection info */

enum {

	TIPC_NLA_CON_UNSPEC,

net/tipc/group.c

+32 −0
Original line number Diff line number Diff line
@@ -918,3 +918,35 @@ void tipc_group_member_evt(struct tipc_group *grp, 
	}

	*sk_rcvbuf = tipc_group_rcvbuf_limit(grp);

}



int tipc_group_fill_sock_diag(struct tipc_group *grp, struct sk_buff *skb)

{

	struct nlattr *group = nla_nest_start(skb, TIPC_NLA_SOCK_GROUP);



	if (nla_put_u32(skb, TIPC_NLA_SOCK_GROUP_ID,

			grp->type) ||

	    nla_put_u32(skb, TIPC_NLA_SOCK_GROUP_INSTANCE,

			grp->instance) ||

	    nla_put_u32(skb, TIPC_NLA_SOCK_GROUP_BC_SEND_NEXT,

			grp->bc_snd_nxt))

		goto group_msg_cancel;



	if (grp->scope == TIPC_NODE_SCOPE)

		if (nla_put_flag(skb, TIPC_NLA_SOCK_GROUP_NODE_SCOPE))

			goto group_msg_cancel;



	if (grp->scope == TIPC_CLUSTER_SCOPE)

		if (nla_put_flag(skb, TIPC_NLA_SOCK_GROUP_CLUSTER_SCOPE))

			goto group_msg_cancel;



	if (*grp->open)

		if (nla_put_flag(skb, TIPC_NLA_SOCK_GROUP_OPEN))

			goto group_msg_cancel;



	nla_nest_end(skb, group);

	return 0;



group_msg_cancel:

	nla_nest_cancel(skb, group);

	return -1;

}

net/tipc/group.h

+1 −0
Original line number Diff line number Diff line
@@ -72,4 +72,5 @@ void tipc_group_update_rcv_win(struct tipc_group *grp, int blks, u32 node, 
			       u32 port, struct sk_buff_head *xmitq);

u16 tipc_group_bc_snd_nxt(struct tipc_group *grp);

void tipc_group_update_member(struct tipc_member *m, int len);

int tipc_group_fill_sock_diag(struct tipc_group *grp, struct sk_buff *skb);

#endif

net/tipc/socket.c

+5 −0
Original line number Diff line number Diff line
@@ -3316,6 +3316,11 @@ int tipc_sk_fill_sock_diag(struct sk_buff *skb, struct netlink_callback *cb, 
		goto stat_msg_cancel;



	nla_nest_end(skb, stat);



	if (tsk->group)

		if (tipc_group_fill_sock_diag(tsk->group, skb))

			goto stat_msg_cancel;



	nla_nest_end(skb, attrs);



	return 0;

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