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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: Ying Xue <ying.xue@windriver.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: GhantaKrishnamurthy MohanKrishna <mohan.krishna.ghanta.krishnamurthy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
GhantaKrishnamurthy MohanKrishna 2018-06-29 13:26:18 +02:00 committed by David S. Miller
parent 6a939f365b
commit a1be5a20f1
4 changed files with 52 additions and 0 deletions
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14
include/uapi/linux/tipc_netlink.h
View File

@ -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,

32
net/tipc/group.c
View File

@ -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;
}

1
net/tipc/group.h
View File

@ -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

5
net/tipc/socket.c
View File

@ -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;