diff mbox series

[5.8,030/633] tipc: re-configure queue limit for broadcast link

Message ID 20201027135524.114262938@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH Oct. 27, 2020, 1:46 p.m. UTC 
From: Hoang Huu Le <hoang.h.le@dektech.com.au>

[ Upstream commit 75cee397ae6f1020fbb75db90aa22a51bc3318ac ]

The queue limit of the broadcast link is being calculated base on initial
MTU. However, when MTU value changed (e.g manual changing MTU on NIC
device, MTU negotiation etc.,) we do not re-calculate queue limit.
This gives throughput does not reflect with the change.

So fix it by calling the function to re-calculate queue limit of the
broadcast link.

Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Hoang Huu Le <hoang.h.le@dektech.com.au>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/tipc/bcast.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff mbox series

Patch

--- a/net/tipc/bcast.c
+++ b/net/tipc/bcast.c
@@ -108,6 +108,7 @@  static void tipc_bcbase_select_primary(s
 {
 	struct tipc_bc_base *bb = tipc_bc_base(net);
 	int all_dests =  tipc_link_bc_peers(bb->link);
+	int max_win = tipc_link_max_win(bb->link);
 	int i, mtu, prim;
 
 	bb->primary_bearer = INVALID_BEARER_ID;
@@ -121,8 +122,11 @@  static void tipc_bcbase_select_primary(s
 			continue;
 
 		mtu = tipc_bearer_mtu(net, i);
-		if (mtu < tipc_link_mtu(bb->link))
+		if (mtu < tipc_link_mtu(bb->link)) {
 			tipc_link_set_mtu(bb->link, mtu);
+			tipc_link_set_queue_limits(bb->link, max_win,
+						   max_win);
+		}
 		bb->bcast_support &= tipc_bearer_bcast_support(net, i);
 		if (bb->dests[i] < all_dests)
 			continue;