This is a note to let you know that I've just added the patch titled
[PATCH stable 5.8 01/25] tipc: re-configure queue limit for broadcast link
to the 5.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
tipc-re-configure-queue-limit-for-broadcast-link.patch
and it can be found in the queue-5.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Sat Oct 24 10:56:27 AM CEST 2020
From: Hoang Huu Le <hoang.h.le@xxxxxxxxxxxxxx>
Date: Fri, 16 Oct 2020 09:31:18 +0700
Subject: [PATCH stable 5.8 01/25] tipc: re-configure queue limit for broadcast link
From: Hoang Huu Le <hoang.h.le@xxxxxxxxxxxxxx>
[ 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@xxxxxxxxxx>
Signed-off-by: Hoang Huu Le <hoang.h.le@xxxxxxxxxxxxxx>
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/tipc/bcast.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- 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;
Patches currently in stable-queue which might be from hoang.h.le@xxxxxxxxxxxxxx are
queue-5.8/tipc-fix-incorrect-setting-window-for-bcast-link.patch
queue-5.8/tipc-re-configure-queue-limit-for-broadcast-link.patch
