This is a note to let you know that I've just added the patch titled
bonding: show saner speed for broadcast mode
to the 4.4-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:
bonding-show-saner-speed-for-broadcast-mode.patch
and it can be found in the queue-4.4 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 Wed Aug 26 04:19:14 PM CEST 2020
From: Jarod Wilson <jarod@xxxxxxxxxx>
Date: Thu, 13 Aug 2020 10:09:00 -0400
Subject: bonding: show saner speed for broadcast mode
From: Jarod Wilson <jarod@xxxxxxxxxx>
[ Upstream commit 4ca0d9ac3fd8f9f90b72a15d8da2aca3ffb58418 ]
Broadcast mode bonds transmit a copy of all traffic simultaneously out of
all interfaces, so the "speed" of the bond isn't really the aggregate of
all interfaces, but rather, the speed of the slowest active interface.
Also, the type of the speed field is u32, not unsigned long, so adjust
that accordingly, as required to make min() function here without
complaining about mismatching types.
Fixes: bb5b052f751b ("bond: add support to read speed and duplex via ethtool")
CC: Jay Vosburgh <j.vosburgh@xxxxxxxxx>
CC: Veaceslav Falico <vfalico@xxxxxxxxx>
CC: Andy Gospodarek <andy@xxxxxxxxxxxxx>
CC: "David S. Miller" <davem@xxxxxxxxxxxxx>
CC: netdev@xxxxxxxxxxxxxxx
Acked-by: Jay Vosburgh <jay.vosburgh@xxxxxxxxxxxxx>
Signed-off-by: Jarod Wilson <jarod@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/bonding/bond_main.c | 21 ++++++++++++++++++---
1 file changed, 18 insertions(+), 3 deletions(-)
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -4057,13 +4057,23 @@ static netdev_tx_t bond_start_xmit(struc
return ret;
}
+static u32 bond_mode_bcast_speed(struct slave *slave, u32 speed)
+{
+ if (speed == 0 || speed == SPEED_UNKNOWN)
+ speed = slave->speed;
+ else
+ speed = min(speed, slave->speed);
+
+ return speed;
+}
+
static int bond_ethtool_get_settings(struct net_device *bond_dev,
struct ethtool_cmd *ecmd)
{
struct bonding *bond = netdev_priv(bond_dev);
- unsigned long speed = 0;
struct list_head *iter;
struct slave *slave;
+ u32 speed = 0;
ecmd->duplex = DUPLEX_UNKNOWN;
ecmd->port = PORT_OTHER;
@@ -4075,8 +4085,13 @@ static int bond_ethtool_get_settings(str
*/
bond_for_each_slave(bond, slave, iter) {
if (bond_slave_can_tx(slave)) {
- if (slave->speed != SPEED_UNKNOWN)
- speed += slave->speed;
+ if (slave->speed != SPEED_UNKNOWN) {
+ if (BOND_MODE(bond) == BOND_MODE_BROADCAST)
+ speed = bond_mode_bcast_speed(slave,
+ speed);
+ else
+ speed += slave->speed;
+ }
if (ecmd->duplex == DUPLEX_UNKNOWN &&
slave->duplex != DUPLEX_UNKNOWN)
ecmd->duplex = slave->duplex;
Patches currently in stable-queue which might be from jarod@xxxxxxxxxx are
queue-4.4/bonding-show-saner-speed-for-broadcast-mode.patch
