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tipc: add support for broadcast rcv stats dumping

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This commit enables dumping the statistics of a broadcast-receiver link
like the traditional 'broadcast-link' one (which is for broadcast-
sender). The link dumping can be triggered via netlink (e.g. the
iproute2/tipc tool) by the link flag - 'TIPC_NLA_LINK_BROADCAST' as the
indicator.

The name of a broadcast-receiver link of a specific peer will be in the
format: 'broadcast-link:<peer-id>'.

For example:

Link <broadcast-link:1001002>
  Window:50 packets
  RX packets:7841 fragments:2408/440 bundles:0/0
  TX packets:0 fragments:0/0 bundles:0/0
  RX naks:0 defs:124 dups:0
  TX naks:21 acks:0 retrans:0
  Congestion link:0  Send queue max:0 avg:0

In addition, the broadcast-receiver link statistics can be reset in the
usual way via netlink by specifying that link name in command.

Note: the 'tipc_link_name_ext()' is removed because the link name can
now be retrieved simply via the 'l->name'.

Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Tuong Lien <tuong.t.lien@dektech.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tuong Lien
2020-05-26 16:38:37 +07:00
committed by David S. Miller
parent a91d55d162
commit 03b6fefd9b
9 changed files with 103 additions and 58 deletions
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6
net/tipc/bcast.c
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@@ -563,10 +563,8 @@ void tipc_bcast_remove_peer(struct net *net, struct tipc_link *rcv_l)
tipc_sk_rcv(net, inputq);
}
int tipc_bclink_reset_stats(struct net *net)
int tipc_bclink_reset_stats(struct net *net, struct tipc_link *l)
{
struct tipc_link *l = tipc_bc_sndlink(net);
if (!l)
return -ENOPROTOOPT;
@@ -694,7 +692,7 @@ int tipc_bcast_init(struct net *net)
tn->bcbase = bb;
spin_lock_init(&tipc_net(net)->bclock);
if (!tipc_link_bc_create(net, 0, 0,
if (!tipc_link_bc_create(net, 0, 0, NULL,
FB_MTU,
BCLINK_WIN_DEFAULT,
BCLINK_WIN_DEFAULT,