net: propagate tc filter chain index down the ndo_setup_tc call

We need to push the chain index down to the drivers, so they have the
information to which chain the rule belongs. For now, no driver supports
multichain offload, so only chain 0 is supported. This is needed to
prevent chain squashes during offload for now. Later this will be used
to implement multichain offload.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index d20e72a..2d01195 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -441,7 +441,8 @@ static void u32_remove_hw_knode(struct tcf_proto *tp, u32 handle)
 		offload.cls_u32->command = TC_CLSU32_DELETE_KNODE;
 		offload.cls_u32->knode.handle = handle;
 		dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle,
-					      tp->protocol, &offload);
+					      tp->chain->index, tp->protocol,
+					      &offload);
 	}
 }
 
@@ -465,7 +466,8 @@ static int u32_replace_hw_hnode(struct tcf_proto *tp, struct tc_u_hnode *h,
 	offload.cls_u32->hnode.prio = h->prio;
 
 	err = dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle,
-					    tp->protocol, &offload);
+					    tp->chain->index, tp->protocol,
+					    &offload);
 	if (tc_skip_sw(flags))
 		return err;
 
@@ -488,7 +490,8 @@ static void u32_clear_hw_hnode(struct tcf_proto *tp, struct tc_u_hnode *h)
 		offload.cls_u32->hnode.prio = h->prio;
 
 		dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle,
-					      tp->protocol, &offload);
+					      tp->chain->index, tp->protocol,
+					      &offload);
 	}
 }
 
@@ -522,7 +525,8 @@ static int u32_replace_hw_knode(struct tcf_proto *tp, struct tc_u_knode *n,
 		offload.cls_u32->knode.link_handle = n->ht_down->handle;
 
 	err = dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle,
-					    tp->protocol, &offload);
+					    tp->chain->index, tp->protocol,
+					    &offload);
 
 	if (!err)
 		n->flags |= TCA_CLS_FLAGS_IN_HW;