bonding:delete agg_select_mode from ad_bond_info

bond_params->ad_select and ad_bond_info->agg_select_mode have the same
meaning, they are duplicate and need extra synchronization.

__get_agg_selection_mode() get ad_select from bond_params directly.
Signed-off-by: Weiping Pan <panweiping3@gmail.com>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/bonding/bond_3ad.c

@@ -262,7 +262,7 @@ static inline u32 __get_agg_selection_mode(struct port *port)
 	if (bond == NULL)
 		return BOND_AD_STABLE;
 
-	return BOND_AD_INFO(bond).agg_select_mode;
+	return bond->params.ad_select;
 }
 
 /**
@@ -1859,7 +1859,6 @@ static void ad_marker_response_received(struct bond_marker *marker,
 void bond_3ad_initiate_agg_selection(struct bonding *bond, int timeout)
 {
 	BOND_AD_INFO(bond).agg_select_timer = timeout;
-	BOND_AD_INFO(bond).agg_select_mode = bond->params.ad_select;
 }
 
 static u16 aggregator_identifier;

drivers/net/bonding/bond_3ad.h

@@ -253,7 +253,6 @@ struct ad_system {
 struct ad_bond_info {
 	struct ad_system system;	    /* 802.3ad system structure */
 	u32 agg_select_timer;	    // Timer to select aggregator after all adapter's hand shakes
-	u32 agg_select_mode;	    // Mode of selection of active aggregator(bandwidth/count)
 	struct timer_list ad_timer;
 };