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Date: Mon, 30 Mar 2015 13:17:32 -0400
From: Andy Gospodarek <gospo@...ulusnetworks.com>
To: Mahesh Bandewar <maheshb@...gle.com>
Cc: Jay Vosburgh <j.vosburgh@...il.com>,
Andy Gospodarek <andy@...yhouse.net>,
Veaceslav Falico <vfalico@...il.com>,
Nikolay Aleksandrov <nikolay@...hat.com>,
David Miller <davem@...emloft.net>,
Maciej Zenczykowski <maze@...gle.com>,
netdev <netdev@...r.kernel.org>,
Eric Dumazet <edumazet@...gle.com>
Subject: Re: [PATCH net-next] bonding: BOND_MONITOR_CHURNED is a port variable
On Mon, Mar 30, 2015 at 09:37:45AM -0700, Mahesh Bandewar wrote:
> On Mon, Mar 30, 2015 at 8:26 AM, Andy Gospodarek
> <gospo@...ulusnetworks.com> wrote:
> > On Fri, Mar 27, 2015 at 10:18:13PM -0700, Mahesh Bandewar wrote:
> >> It's a trivial change to assign the correct value for this Churn-machine
> >> state. This is actually a port variable and hence assigning some arbitrary
> >> value might be error prone.
> >
> > I am looking at 802.1AX-2008 and I do not see this value defined in
> > 5.4.8 ("Variables used for managing the operation of the state
> > machines"). What specification were you looking at that had a 'port
> > churned' (or similar) state mentioned?
> >
> It's a combination of "actor_churn" + "partner_churn". Since the
> verbose form AD_PORT_ACTOR_PARTNER_CHURNED would be long, decided to
> shorten it.
I agree with that the shorter name is better. Good call there.
If we are just checking to see if either AD_PORT_ACTOR_CHURN or
AD_PORT_PARTNER_CHURN why not just change AD_PORT_CHURNED to be equal to
the previous defines?
@@ -71,6 +70,7 @@
#define AD_PORT_STANDBY 0x80
#define AD_PORT_SELECTED 0x100
#define AD_PORT_MOVED 0x200
+#define AD_PORT_CHURNED (AD_PORT_ACTOR_CHURN|AD_PORT_PARTNER_CHURN)
/* Port Key definitions
* key is determined according to the link speed, duplex and
or just set the existing bits and add an inline function or macro to
check in ad_churn_machine() since that is the only place being checked?
If seems like the bits already there represent what you want, so it
seems reasonable to use them rather than creating something extra that
is not included in the spec.
>
>
> If we consider churn-machine-state as part of the LACP state machine,
> >>
> >> Signed-off-by: Mahesh Bandewar <maheshb@...gle.com>
> >> ---
> >> drivers/net/bonding/bond_3ad.c | 12 ++++++------
> >> 1 file changed, 6 insertions(+), 6 deletions(-)
> >>
> >> diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
> >> index b8444746521f..3cce25818b57 100644
> >> --- a/drivers/net/bonding/bond_3ad.c
> >> +++ b/drivers/net/bonding/bond_3ad.c
> >> @@ -38,7 +38,6 @@
> >> #define AD_STANDBY 0x2
> >> #define AD_MAX_TX_IN_SECOND 3
> >> #define AD_COLLECTOR_MAX_DELAY 0
> >> -#define AD_MONITOR_CHURNED 0x1000
> >>
> >> /* Timer definitions (43.4.4 in the 802.3ad standard) */
> >> #define AD_FAST_PERIODIC_TIME 1
> >> @@ -71,6 +70,7 @@
> >> #define AD_PORT_STANDBY 0x80
> >> #define AD_PORT_SELECTED 0x100
> >> #define AD_PORT_MOVED 0x200
> >> +#define AD_PORT_CHURNED 0x400
> >>
> >> /* Port Key definitions
> >> * key is determined according to the link speed, duplex and
> >> @@ -1016,7 +1016,7 @@ static void ad_rx_machine(struct lacpdu *lacpdu, struct port *port)
> >> /* first, check if port was reinitialized */
> >> if (port->sm_vars & AD_PORT_BEGIN) {
> >> port->sm_rx_state = AD_RX_INITIALIZE;
> >> - port->sm_vars |= AD_MONITOR_CHURNED;
> >> + port->sm_vars |= AD_PORT_CHURNED;
> >> /* check if port is not enabled */
> >> } else if (!(port->sm_vars & AD_PORT_BEGIN)
> >> && !port->is_enabled && !(port->sm_vars & AD_PORT_MOVED))
> >> @@ -1026,7 +1026,7 @@ static void ad_rx_machine(struct lacpdu *lacpdu, struct port *port)
> >> (port->sm_rx_state == AD_RX_DEFAULTED) ||
> >> (port->sm_rx_state == AD_RX_CURRENT))) {
> >> if (port->sm_rx_state != AD_RX_CURRENT)
> >> - port->sm_vars |= AD_MONITOR_CHURNED;
> >> + port->sm_vars |= AD_PORT_CHURNED;
> >> port->sm_rx_timer_counter = 0;
> >> port->sm_rx_state = AD_RX_CURRENT;
> >> } else {
> >> @@ -1108,7 +1108,7 @@ static void ad_rx_machine(struct lacpdu *lacpdu, struct port *port)
> >> port->partner_oper.port_state |= AD_STATE_LACP_ACTIVITY;
> >> port->sm_rx_timer_counter = __ad_timer_to_ticks(AD_CURRENT_WHILE_TIMER, (u16)(AD_SHORT_TIMEOUT));
> >> port->actor_oper_port_state |= AD_STATE_EXPIRED;
> >> - port->sm_vars |= AD_MONITOR_CHURNED;
> >> + port->sm_vars |= AD_PORT_CHURNED;
> >> break;
> >> case AD_RX_DEFAULTED:
> >> __update_default_selected(port);
> >> @@ -1144,8 +1144,8 @@ static void ad_rx_machine(struct lacpdu *lacpdu, struct port *port)
> >> */
> >> static void ad_churn_machine(struct port *port)
> >> {
> >> - if (port->sm_vars & AD_MONITOR_CHURNED) {
> >> - port->sm_vars &= ~AD_MONITOR_CHURNED;
> >> + if (port->sm_vars & AD_PORT_CHURNED) {
> >> + port->sm_vars &= ~AD_PORT_CHURNED;
> >> port->sm_churn_actor_state = AD_CHURN_MONITOR;
> >> port->sm_churn_partner_state = AD_CHURN_MONITOR;
> >> port->sm_churn_actor_timer_counter =
> >> --
> >> 2.2.0.rc0.207.ga3a616c
> >>
> >> --
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