netdev - [PATCH net-next 10/12] cls_u32: pass offload flags to tc_cls_common_offload

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Date:   Tue, 23 Jan 2018 18:46:06 -0800
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     davem@...emloft.net, dsahern@...il.com, daniel@...earbox.net,
        john.fastabend@...il.com, jiri@...nulli.us
Cc:     netdev@...r.kernel.org, oss-drivers@...ronome.com,
        aring@...atatu.com, Jakub Kicinski <jakub.kicinski@...ronome.com>
Subject: [PATCH net-next 10/12] cls_u32: pass offload flags to tc_cls_common_offload_init()

Pass offload flags to the new implementation of
tc_cls_common_offload_init().  Extack will now only
be set if user requested skip_sw.  hnodes need to
hold onto the flags now to be able to reuse them
on filter removal.

Signed-off-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
Reviewed-by: Simon Horman <simon.horman@...ronome.com>
---
 net/sched/cls_u32.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index b4e72f3099d9..21e84abe4226 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -87,6 +87,7 @@ struct tc_u_hnode {
 	unsigned int		divisor;
 	struct idr		handle_idr;
 	struct rcu_head		rcu;
+	u32			flags;
 	/* The 'ht' field MUST be the last field in structure to allow for
 	 * more entries allocated at end of structure.
 	 */
@@ -491,7 +492,7 @@ static void u32_clear_hw_hnode(struct tcf_proto *tp, struct tc_u_hnode *h)
 	struct tcf_block *block = tp->chain->block;
 	struct tc_cls_u32_offload cls_u32 = {};
 
-	tc_cls_common_offload_init__(&cls_u32.common, tp, NULL);
+	tc_cls_common_offload_init(&cls_u32.common, tp, h->flags, NULL);
 	cls_u32.command = TC_CLSU32_DELETE_HNODE;
 	cls_u32.hnode.divisor = h->divisor;
 	cls_u32.hnode.handle = h->handle;
@@ -509,7 +510,7 @@ static int u32_replace_hw_hnode(struct tcf_proto *tp, struct tc_u_hnode *h,
 	bool offloaded = false;
 	int err;
 
-	tc_cls_common_offload_init__(&cls_u32.common, tp, extack);
+	tc_cls_common_offload_init(&cls_u32.common, tp, flags, extack);
 	cls_u32.command = TC_CLSU32_NEW_HNODE;
 	cls_u32.hnode.divisor = h->divisor;
 	cls_u32.hnode.handle = h->handle;
@@ -534,7 +535,7 @@ static void u32_remove_hw_knode(struct tcf_proto *tp, struct tc_u_knode *n)
 	struct tcf_block *block = tp->chain->block;
 	struct tc_cls_u32_offload cls_u32 = {};
 
-	tc_cls_common_offload_init__(&cls_u32.common, tp, NULL);
+	tc_cls_common_offload_init(&cls_u32.common, tp, n->flags, NULL);
 	cls_u32.command = TC_CLSU32_DELETE_KNODE;
 	cls_u32.knode.handle = n->handle;
 
@@ -550,7 +551,7 @@ static int u32_replace_hw_knode(struct tcf_proto *tp, struct tc_u_knode *n,
 	bool skip_sw = tc_skip_sw(flags);
 	int err;
 
-	tc_cls_common_offload_init__(&cls_u32.common, tp, extack);
+	tc_cls_common_offload_init(&cls_u32.common, tp, flags, extack);
 	cls_u32.command = TC_CLSU32_REPLACE_KNODE;
 	cls_u32.knode.handle = n->handle;
 	cls_u32.knode.fshift = n->fshift;
@@ -1015,6 +1016,7 @@ static int u32_change(struct net *net, struct sk_buff *in_skb,
 		ht->handle = handle;
 		ht->prio = tp->prio;
 		idr_init(&ht->handle_idr);
+		ht->flags = flags;
 
 		err = u32_replace_hw_hnode(tp, ht, flags, extack);
 		if (err) {
-- 
2.15.1