On Monday 06 July 2015 09:02 PM, Andy Gospodarek wrote:

On Mon, Jul 06, 2015 at 05:34:01PM +0530, GMAIL wrote:
On Friday 03 July 2015 11:46 PM, Jay Vosburgh wrote:
GMAIL<ranamazh...@gmail.com>  wrote:
[...]
Looks good, added cosmetic changes for more readability,
it might save some instructions :)


diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 19eb990..317a494 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -689,40 +689,57 @@ out:
  }
-static bool bond_should_change_active(struct bonding *bond)
+static struct slave *bond_choose_primary_or_current(struct bonding *bond)
  {
         struct slave *prim = rtnl_dereference(bond->primary_slave);
         struct slave *curr = rtnl_dereference(bond->curr_active_slave);
Probably a good idea to add back a blank line here.

Otherwise this logic appears to be proper to resolve your issue and
Jay's additions appear to handle the case where primary_slave is NULL.

It was there, I don't know, may be mail client issue.

-       if (!prim || !curr || curr->link != BOND_LINK_UP)
-               return true;
+       if (!prim || prim->link != BOND_LINK_UP) {
+               if (!curr || curr->link != BOND_LINK_UP)
+                       return NULL;
+               return curr;
+       }
+
         if (bond->force_primary) {
                 bond->force_primary = false;
-               return true;
+               return prim;
+       }
+
+       if (!curr || curr->link != BOND_LINK_UP)
+               return prim;
+
+       /* At this point, prim and curr are both up */
+       switch (bond->params.primary_reselect) {
+       case BOND_PRI_RESELECT_ALWAYS:
+               return prim;
+       case BOND_PRI_RESELECT_BETTER:
+               if (prim->speed < curr->speed)
+                       return curr;
+               if (prim->speed == curr->speed && prim->duplex <= curr->duplex)
+                       return curr;
+               return prim;
+       case BOND_PRI_RESELECT_FAILURE:
+               return curr;
+       default:
+               netdev_err(bond->dev, "impossible primary_reselect %d\n",
+                          bond->params.primary_reselect);
+               return curr;
         }
-       if (bond->params.primary_reselect == BOND_PRI_RESELECT_BETTER &&
-           (prim->speed < curr->speed ||
-            (prim->speed == curr->speed && prim->duplex <= curr->duplex)))
-               return false;
-       if (bond->params.primary_reselect == BOND_PRI_RESELECT_FAILURE)
-               return false;
-       return true;
  }

  /**
- * find_best_interface - select the best available slave to be the active one
+ * bond_find_best_slave - select the best available slave to be the active one
   * @bond: our bonding struct
   */
  static struct slave *bond_find_best_slave(struct bonding *bond)
  {
-       struct slave *slave, *bestslave = NULL, *primary;
+       struct slave *slave, *bestslave = NULL;
         struct list_head *iter;
         int mintime = bond->params.updelay;

-       primary = rtnl_dereference(bond->primary_slave);
-       if (primary && primary->link == BOND_LINK_UP &&
-           bond_should_change_active(bond))
-               return primary;
+       slave = bond_choose_primary_or_current(bond);
+       if (slave)
+               return slave;

         bond_for_each_slave(bond, slave, iter) {
                 if (slave->link == BOND_LINK_UP)
---

Regards,
Mazhar Rana

Sending updated version of patch(v3) separately which will accommodate
my and Jay's changes.

Regards,
Mazhar Rana

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