This is a note to let you know that I've just added the patch titled
[PATCH stable 5.8 02/25] tipc: fix incorrect setting window for bcast 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-fix-incorrect-setting-window-for-bcast-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 09:31:19 +0700
Subject: [PATCH stable 5.8 02/25] tipc: fix incorrect setting window for bcast link
From: Hoang Huu Le <hoang.h.le@xxxxxxxxxxxxxx>
[ Upstream commit ec78e31852c9bb7d96b6557468fecb6f6f3b28f3 ]
In commit 16ad3f4022bb
("tipc: introduce variable window congestion control"), we applied
the algorithm to select window size from minimum window to the
configured maximum window for unicast link, and, besides we chose
to keep the window size for broadcast link unchanged and equal (i.e
fix window 50)
However, when setting maximum window variable via command, the window
variable was re-initialized to unexpect value (i.e 32).
We fix this by updating the fix window for broadcast as we stated.
Fixes: 16ad3f4022bb ("tipc: introduce variable window congestion control")
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, 4 insertions(+), 2 deletions(-)
--- a/net/tipc/bcast.c
+++ b/net/tipc/bcast.c
@@ -109,6 +109,7 @@ 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 min_win = tipc_link_min_win(bb->link);
int i, mtu, prim;
bb->primary_bearer = INVALID_BEARER_ID;
@@ -124,7 +125,8 @@ static void tipc_bcbase_select_primary(s
mtu = tipc_bearer_mtu(net, i);
if (mtu < tipc_link_mtu(bb->link)) {
tipc_link_set_mtu(bb->link, mtu);
- tipc_link_set_queue_limits(bb->link, max_win,
+ tipc_link_set_queue_limits(bb->link,
+ min_win,
max_win);
}
bb->bcast_support &= tipc_bearer_bcast_support(net, i);
@@ -589,7 +591,7 @@ static int tipc_bc_link_set_queue_limits
if (max_win > TIPC_MAX_LINK_WIN)
return -EINVAL;
tipc_bcast_lock(net);
- tipc_link_set_queue_limits(l, BCLINK_WIN_MIN, max_win);
+ tipc_link_set_queue_limits(l, tipc_link_min_win(l), max_win);
tipc_bcast_unlock(net);
return 0;
}
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
