[PATCH net-next V2 0/8] Offloading tc rules using underline Hardware device

[PATCH net-next V2 0/8] Offloading tc rules using underline Hardware device

[Hadar Hen Zion]

This series adds flower classifier support in offloading tc rules when the
Software ingress device is different from the Hardware ingress device, 
such as when dealing with IP tunnels  

The first two patches are a small fixes to flower, checking the skip_hw flag
wasn't set before calling the Hardware offloading functions which will try to
offload the rule.

The next two patches are infrastructure patches, a preparation for the fourth
patch which is adding support in flower to offload rules when the ingress
device is not a Hardware device and therefore can't offload.
In this case ndo_setup_tc is called with the mirred (egress) device.

The last three patchs are adding mlx5e support to offload rules using the new
"egress_device" flag.

Thanks,
Hadar

Changes from v0:
- check if CONFIG_NET_CLS_ACT is defined befor calling tc_action_ops get_dev()

Hadar Hen Zion (8):
  net/sched: Add separate check for skip_hw flag
  net/sched: cls_flower: Try to offload only if skip_hw flag isn't set
  net/sched: cls_flower: Provide a filter to replace/destroy hardware
    filter functions
  net/sched: act_mirred: Add new tc_action_ops get_dev()
  net/sched: cls_flower: Add offload support using egress Hardware
    device
  net/mlx5e: Bring back representor's ndos that were accidentally
    removed
  net/mlx5e: Save the represntor netdevice as part of the representor
  net/mlx5e: Support adding ingress tc rule when egress device flag is
    set

 drivers/net/ethernet/mellanox/mlx5/core/en_main.c  |  2 +-
 drivers/net/ethernet/mellanox/mlx5/core/en_rep.c   | 25 +++++--
 drivers/net/ethernet/mellanox/mlx5/core/eswitch.h  |  3 +-
 .../ethernet/mellanox/mlx5/core/eswitch_offloads.c | 12 ++-
 include/linux/netdevice.h                          |  1 +
 include/net/act_api.h                              |  2 +
 include/net/pkt_cls.h                              | 21 +++++-
 net/sched/act_mirred.c                             | 12 +++
 net/sched/cls_api.c                                | 24 ++++++
 net/sched/cls_flower.c                             | 87 ++++++++++++----------
 10 files changed, 135 insertions(+), 54 deletions(-)

-- 
1.8.3.1

[PATCH net-next V2 1/8] net/sched: Add separate check for skip_hw flag

[Hadar Hen Zion]

Creating a difference between two possible cases:
1. Not offloading tc rule since the user sets 'skip_hw' flag.
2. Not offloading tc rule since the device doesn't support offloading.

This patch doesn't add any new functionality.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
---
 include/net/pkt_cls.h | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
index 767b03a..45ad9aa 100644
--- a/include/net/pkt_cls.h
+++ b/include/net/pkt_cls.h
@@ -425,16 +425,14 @@ struct tc_cls_u32_offload {
 	};
 };
 
-static inline bool tc_should_offload(const struct net_device *dev,
-				     const struct tcf_proto *tp, u32 flags)
+static inline bool tc_can_offload(const struct net_device *dev,
+				  const struct tcf_proto *tp)
 {
 	const struct Qdisc *sch = tp->q;
 	const struct Qdisc_class_ops *cops = sch->ops->cl_ops;
 
 	if (!(dev->features & NETIF_F_HW_TC))
 		return false;
-	if (flags & TCA_CLS_FLAGS_SKIP_HW)
-		return false;
 	if (!dev->netdev_ops->ndo_setup_tc)
 		return false;
 	if (cops && cops->tcf_cl_offload)
@@ -443,6 +441,19 @@ static inline bool tc_should_offload(const struct net_device *dev,
 	return true;
 }
 
+static inline bool tc_skip_hw(u32 flags)
+{
+	return (flags & TCA_CLS_FLAGS_SKIP_HW) ? true : false;
+}
+
+static inline bool tc_should_offload(const struct net_device *dev,
+				     const struct tcf_proto *tp, u32 flags)
+{
+	if (tc_skip_hw(flags))
+		return false;
+	return tc_can_offload(dev, tp);
+}
+
 static inline bool tc_skip_sw(u32 flags)
 {
 	return (flags & TCA_CLS_FLAGS_SKIP_SW) ? true : false;
-- 
1.8.3.1

[PATCH net-next V2 2/8] net/sched: cls_flower: Try to offload only if skip_hw flag isn't set

[Hadar Hen Zion]

Check skip_hw flag isn't set before calling
fl_hw_{replace/destroy}_filter and fl_hw_update_stats functions.

Replace the call to tc_should_offload with tc_can_offload.
tc_can_offload only checks if the device supports offloading, the check for
skip_hw flag is done earlier in the flow.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
---
 net/sched/cls_flower.c | 35 ++++++++++++++++++++---------------
 1 file changed, 20 insertions(+), 15 deletions(-)

diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index e8dd09a..5e70f65 100644
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -207,7 +207,7 @@ static void fl_hw_destroy_filter(struct tcf_proto *tp, unsigned long cookie)
 	struct tc_cls_flower_offload offload = {0};
 	struct tc_to_netdev tc;
 
-	if (!tc_should_offload(dev, tp, 0))
+	if (!tc_can_offload(dev, tp))
 		return;
 
 	offload.command = TC_CLSFLOWER_DESTROY;
@@ -231,7 +231,7 @@ static int fl_hw_replace_filter(struct tcf_proto *tp,
 	struct tc_to_netdev tc;
 	int err;
 
-	if (!tc_should_offload(dev, tp, flags))
+	if (!tc_can_offload(dev, tp))
 		return tc_skip_sw(flags) ? -EINVAL : 0;
 
 	offload.command = TC_CLSFLOWER_REPLACE;
@@ -259,7 +259,7 @@ static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f)
 	struct tc_cls_flower_offload offload = {0};
 	struct tc_to_netdev tc;
 
-	if (!tc_should_offload(dev, tp, 0))
+	if (!tc_can_offload(dev, tp))
 		return;
 
 	offload.command = TC_CLSFLOWER_STATS;
@@ -275,7 +275,8 @@ static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f)
 static void __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f)
 {
 	list_del_rcu(&f->list);
-	fl_hw_destroy_filter(tp, (unsigned long)f);
+	if (!tc_skip_hw(f->flags))
+		fl_hw_destroy_filter(tp, (unsigned long)f);
 	tcf_unbind_filter(tp, &f->res);
 	call_rcu(&f->rcu, fl_destroy_filter);
 }
@@ -743,20 +744,23 @@ static int fl_change(struct net *net, struct sk_buff *in_skb,
 			goto errout;
 	}
 
-	err = fl_hw_replace_filter(tp,
-				   &head->dissector,
-				   &mask.key,
-				   &fnew->key,
-				   &fnew->exts,
-				   (unsigned long)fnew,
-				   fnew->flags);
-	if (err)
-		goto errout;
+	if (!tc_skip_hw(fnew->flags)) {
+		err = fl_hw_replace_filter(tp,
+					   &head->dissector,
+					   &mask.key,
+					   &fnew->key,
+					   &fnew->exts,
+					   (unsigned long)fnew,
+					   fnew->flags);
+		if (err)
+			goto errout;
+	}
 
 	if (fold) {
 		rhashtable_remove_fast(&head->ht, &fold->ht_node,
 				       head->ht_params);
-		fl_hw_destroy_filter(tp, (unsigned long)fold);
+		if (!tc_skip_hw(fold->flags))
+			fl_hw_destroy_filter(tp, (unsigned long)fold);
 	}
 
 	*arg = (unsigned long) fnew;
@@ -879,7 +883,8 @@ static int fl_dump(struct net *net, struct tcf_proto *tp, unsigned long fh,
 			goto nla_put_failure;
 	}
 
-	fl_hw_update_stats(tp, f);
+	if (!tc_skip_hw(f->flags))
+		fl_hw_update_stats(tp, f);
 
 	if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
 			    mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
-- 
1.8.3.1

[PATCH net-next V2 3/8] net/sched: cls_flower: Provide a filter to replace/destroy hardware filter functions

[Hadar Hen Zion]

Instead of providing many arguments to fl_hw_{replace/destroy}_filter
functions, just provide cls_fl_filter struct that includes all the relevant
args.

This patches doesn't add any new functionality.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
---
 net/sched/cls_flower.c | 27 +++++++++++----------------
 1 file changed, 11 insertions(+), 16 deletions(-)

diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index 5e70f65..13b349f 100644
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -201,7 +201,7 @@ static void fl_destroy_filter(struct rcu_head *head)
 	kfree(f);
 }
 
-static void fl_hw_destroy_filter(struct tcf_proto *tp, unsigned long cookie)
+static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f)
 {
 	struct net_device *dev = tp->q->dev_queue->dev;
 	struct tc_cls_flower_offload offload = {0};
@@ -211,7 +211,7 @@ static void fl_hw_destroy_filter(struct tcf_proto *tp, unsigned long cookie)
 		return;
 
 	offload.command = TC_CLSFLOWER_DESTROY;
-	offload.cookie = cookie;
+	offload.cookie = (unsigned long)f;
 
 	tc.type = TC_SETUP_CLSFLOWER;
 	tc.cls_flower = &offload;
@@ -222,9 +222,7 @@ static void fl_hw_destroy_filter(struct tcf_proto *tp, unsigned long cookie)
 static int fl_hw_replace_filter(struct tcf_proto *tp,
 				struct flow_dissector *dissector,
 				struct fl_flow_key *mask,
-				struct fl_flow_key *key,
-				struct tcf_exts *actions,
-				unsigned long cookie, u32 flags)
+				struct cls_fl_filter *f)
 {
 	struct net_device *dev = tp->q->dev_queue->dev;
 	struct tc_cls_flower_offload offload = {0};
@@ -232,14 +230,14 @@ static int fl_hw_replace_filter(struct tcf_proto *tp,
 	int err;
 
 	if (!tc_can_offload(dev, tp))
-		return tc_skip_sw(flags) ? -EINVAL : 0;
+		return tc_skip_sw(f->flags) ? -EINVAL : 0;
 
 	offload.command = TC_CLSFLOWER_REPLACE;
-	offload.cookie = cookie;
+	offload.cookie = (unsigned long)f;
 	offload.dissector = dissector;
 	offload.mask = mask;
-	offload.key = key;
-	offload.exts = actions;
+	offload.key = &f->key;
+	offload.exts = &f->exts;
 
 	tc.type = TC_SETUP_CLSFLOWER;
 	tc.cls_flower = &offload;
@@ -247,7 +245,7 @@ static int fl_hw_replace_filter(struct tcf_proto *tp,
 	err = dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol,
 					    &tc);
 
-	if (tc_skip_sw(flags))
+	if (tc_skip_sw(f->flags))
 		return err;
 
 	return 0;
@@ -276,7 +274,7 @@ static void __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f)
 {
 	list_del_rcu(&f->list);
 	if (!tc_skip_hw(f->flags))
-		fl_hw_destroy_filter(tp, (unsigned long)f);
+		fl_hw_destroy_filter(tp, f);
 	tcf_unbind_filter(tp, &f->res);
 	call_rcu(&f->rcu, fl_destroy_filter);
 }
@@ -748,10 +746,7 @@ static int fl_change(struct net *net, struct sk_buff *in_skb,
 		err = fl_hw_replace_filter(tp,
 					   &head->dissector,
 					   &mask.key,
-					   &fnew->key,
-					   &fnew->exts,
-					   (unsigned long)fnew,
-					   fnew->flags);
+					   fnew);
 		if (err)
 			goto errout;
 	}
@@ -760,7 +755,7 @@ static int fl_change(struct net *net, struct sk_buff *in_skb,
 		rhashtable_remove_fast(&head->ht, &fold->ht_node,
 				       head->ht_params);
 		if (!tc_skip_hw(fold->flags))
-			fl_hw_destroy_filter(tp, (unsigned long)fold);
+			fl_hw_destroy_filter(tp, fold);
 	}
 
 	*arg = (unsigned long) fnew;
-- 
1.8.3.1

[PATCH net-next V2 4/8] net/sched: act_mirred: Add new tc_action_ops get_dev()

[Hadar Hen Zion]

Adding support to a new tc_action_ops.
get_dev is a general option which allows to get the underline
device when trying to offload a tc rule.

In case of mirred action the returned device is the mirred (egress)
device.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
---
 include/net/act_api.h  |  2 ++
 net/sched/act_mirred.c | 12 ++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/include/net/act_api.h b/include/net/act_api.h
index d8eae87..9dddf77 100644
--- a/include/net/act_api.h
+++ b/include/net/act_api.h
@@ -119,6 +119,8 @@ struct tc_action_ops {
 	int     (*walk)(struct net *, struct sk_buff *,
 			struct netlink_callback *, int, const struct tc_action_ops *);
 	void	(*stats_update)(struct tc_action *, u64, u32, u64);
+	int	(*get_dev)(const struct tc_action *a, struct net *net,
+			   struct net_device **mirred_dev);
 };
 
 struct tc_action_net {
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index 1af7baa..bb09ba3 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -315,6 +315,17 @@ static int mirred_device_event(struct notifier_block *unused,
 	.notifier_call = mirred_device_event,
 };
 
+static int tcf_mirred_device(const struct tc_action *a, struct net *net,
+			     struct net_device **mirred_dev)
+{
+	int ifindex = tcf_mirred_ifindex(a);
+
+	*mirred_dev = __dev_get_by_index(net, ifindex);
+	if (!mirred_dev)
+		return -EINVAL;
+	return 0;
+}
+
 static struct tc_action_ops act_mirred_ops = {
 	.kind		=	"mirred",
 	.type		=	TCA_ACT_MIRRED,
@@ -327,6 +338,7 @@ static int mirred_device_event(struct notifier_block *unused,
 	.walk		=	tcf_mirred_walker,
 	.lookup		=	tcf_mirred_search,
 	.size		=	sizeof(struct tcf_mirred),
+	.get_dev	=	tcf_mirred_device,
 };
 
 static __net_init int mirred_init_net(struct net *net)
-- 
1.8.3.1

[PATCH net-next V2 5/8] net/sched: cls_flower: Add offload support using egress Hardware device

[Hadar Hen Zion]

In order to support hardware offloading when the device given by the tc
rule is different from the Hardware underline device, extract the mirred
(egress) device from the tc action when a filter is added, using the new
tc_action_ops, get_dev().

Flower caches the information about the mirred device and use it for
calling ndo_setup_tc in filter change, update stats and delete.

Calling ndo_setup_tc of the mirred (egress) device instead of the
ingress device will allow a resolution between the software ingress
device and the underline hardware device.

The resolution will take place inside the offloading driver using
'egress_device' flag added to tc_to_netdev struct which is provided to
the offloading driver.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
---
 include/linux/netdevice.h |  1 +
 include/net/pkt_cls.h     |  2 ++
 net/sched/cls_api.c       | 24 ++++++++++++++++++++++++
 net/sched/cls_flower.c    | 41 ++++++++++++++++++++++++-----------------
 4 files changed, 51 insertions(+), 17 deletions(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 3755317..1ff5ea6 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -802,6 +802,7 @@ struct tc_to_netdev {
 		struct tc_cls_matchall_offload *cls_mall;
 		struct tc_cls_bpf_offload *cls_bpf;
 	};
+	bool egress_dev;
 };
 
 /* These structures hold the attributes of xdp state that are being passed
diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
index 45ad9aa..f0a0514 100644
--- a/include/net/pkt_cls.h
+++ b/include/net/pkt_cls.h
@@ -171,6 +171,8 @@ void tcf_exts_change(struct tcf_proto *tp, struct tcf_exts *dst,
 		     struct tcf_exts *src);
 int tcf_exts_dump(struct sk_buff *skb, struct tcf_exts *exts);
 int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts);
+int tcf_exts_get_dev(struct net_device *dev, struct tcf_exts *exts,
+		     struct net_device **hw_dev);
 
 /**
  * struct tcf_pkt_info - packet information
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index b05d4a2..3fbba79 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -682,6 +682,30 @@ int tcf_exts_dump_stats(struct sk_buff *skb, struct tcf_exts *exts)
 }
 EXPORT_SYMBOL(tcf_exts_dump_stats);
 
+int tcf_exts_get_dev(struct net_device *dev, struct tcf_exts *exts,
+		     struct net_device **hw_dev)
+{
+#ifdef CONFIG_NET_CLS_ACT
+	const struct tc_action *a;
+	LIST_HEAD(actions);
+
+	if (tc_no_actions(exts))
+		return -EINVAL;
+
+	tcf_exts_to_list(exts, &actions);
+	list_for_each_entry(a, &actions, list) {
+		if (a->ops->get_dev) {
+			a->ops->get_dev(a, dev_net(dev), hw_dev);
+			break;
+		}
+	}
+	if (*hw_dev)
+		return 0;
+#endif
+	return -EOPNOTSUPP;
+}
+EXPORT_SYMBOL(tcf_exts_get_dev);
+
 static int __init tc_filter_init(void)
 {
 	rtnl_register(PF_UNSPEC, RTM_NEWTFILTER, tc_ctl_tfilter, NULL, NULL);
diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index 13b349f..1cacfa5 100644
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -78,6 +78,8 @@ struct cls_fl_filter {
 	u32 handle;
 	u32 flags;
 	struct rcu_head	rcu;
+	struct tc_to_netdev tc;
+	struct net_device *hw_dev;
 };
 
 static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
@@ -203,9 +205,9 @@ static void fl_destroy_filter(struct rcu_head *head)
 
 static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f)
 {
-	struct net_device *dev = tp->q->dev_queue->dev;
 	struct tc_cls_flower_offload offload = {0};
-	struct tc_to_netdev tc;
+	struct net_device *dev = f->hw_dev;
+	struct tc_to_netdev *tc = &f->tc;
 
 	if (!tc_can_offload(dev, tp))
 		return;
@@ -213,10 +215,10 @@ static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f)
 	offload.command = TC_CLSFLOWER_DESTROY;
 	offload.cookie = (unsigned long)f;
 
-	tc.type = TC_SETUP_CLSFLOWER;
-	tc.cls_flower = &offload;
+	tc->type = TC_SETUP_CLSFLOWER;
+	tc->cls_flower = &offload;
 
-	dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, &tc);
+	dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, tc);
 }
 
 static int fl_hw_replace_filter(struct tcf_proto *tp,
@@ -226,11 +228,17 @@ static int fl_hw_replace_filter(struct tcf_proto *tp,
 {
 	struct net_device *dev = tp->q->dev_queue->dev;
 	struct tc_cls_flower_offload offload = {0};
-	struct tc_to_netdev tc;
+	struct tc_to_netdev *tc = &f->tc;
 	int err;
 
-	if (!tc_can_offload(dev, tp))
-		return tc_skip_sw(f->flags) ? -EINVAL : 0;
+	if (!tc_can_offload(dev, tp)) {
+		if (tcf_exts_get_dev(dev, &f->exts, &f->hw_dev))
+			return tc_skip_sw(f->flags) ? -EINVAL : 0;
+		dev = f->hw_dev;
+		tc->egress_dev = true;
+	} else {
+		f->hw_dev = dev;
+	}
 
 	offload.command = TC_CLSFLOWER_REPLACE;
 	offload.cookie = (unsigned long)f;
@@ -239,23 +247,22 @@ static int fl_hw_replace_filter(struct tcf_proto *tp,
 	offload.key = &f->key;
 	offload.exts = &f->exts;
 
-	tc.type = TC_SETUP_CLSFLOWER;
-	tc.cls_flower = &offload;
+	tc->type = TC_SETUP_CLSFLOWER;
+	tc->cls_flower = &offload;
 
 	err = dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol,
-					    &tc);
+					    tc);
 
 	if (tc_skip_sw(f->flags))
 		return err;
-
 	return 0;
 }
 
 static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f)
 {
-	struct net_device *dev = tp->q->dev_queue->dev;
 	struct tc_cls_flower_offload offload = {0};
-	struct tc_to_netdev tc;
+	struct net_device *dev = f->hw_dev;
+	struct tc_to_netdev *tc = &f->tc;
 
 	if (!tc_can_offload(dev, tp))
 		return;
@@ -264,10 +271,10 @@ static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f)
 	offload.cookie = (unsigned long)f;
 	offload.exts = &f->exts;
 
-	tc.type = TC_SETUP_CLSFLOWER;
-	tc.cls_flower = &offload;
+	tc->type = TC_SETUP_CLSFLOWER;
+	tc->cls_flower = &offload;
 
-	dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, &tc);
+	dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, tc);
 }
 
 static void __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f)
-- 
1.8.3.1

[PATCH net-next V2 6/8] net/mlx5e: Bring back representor's ndos that were accidentally removed

[Hadar Hen Zion]

The VF Representor udp tunnel ndo entries were removed by mistake,
return them.

Fixes: 370bad0f9a52 ('net/mlx5e: Support HW (offloaded) and SW counters for SRIOV switchdev mode')
Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index 5e33f6b..9b1e351 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -384,6 +384,8 @@ int mlx5e_get_offload_stats(int attr_id, const struct net_device *dev,
 	.ndo_get_phys_port_name  = mlx5e_rep_get_phys_port_name,
 	.ndo_setup_tc            = mlx5e_rep_ndo_setup_tc,
 	.ndo_get_stats64         = mlx5e_rep_get_stats,
+	.ndo_udp_tunnel_add      = mlx5e_add_vxlan_port,
+	.ndo_udp_tunnel_del      = mlx5e_del_vxlan_port,
 	.ndo_has_offload_stats	 = mlx5e_has_offload_stats,
 	.ndo_get_offload_stats	 = mlx5e_get_offload_stats,
 };
-- 
1.8.3.1

[PATCH net-next V2 7/8] net/mlx5e: Save the represntor netdevice as part of the representor

[Hadar Hen Zion]

Replace the representor private data to a net_device pointer holding the
representor netdevice, instead of void pointer holding mlx5e_priv.

It will be used by a new eswitch service function, returning the uplink representor
netdevice.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c         |  2 +-
 drivers/net/ethernet/mellanox/mlx5/core/en_rep.c          | 15 ++++++++-------
 drivers/net/ethernet/mellanox/mlx5/core/eswitch.h         |  3 ++-
 .../net/ethernet/mellanox/mlx5/core/eswitch_offloads.c    | 12 +++++++++++-
 4 files changed, 22 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 6b492ca..37c0d84 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -3796,7 +3796,7 @@ static void mlx5e_nic_enable(struct mlx5e_priv *priv)
 		rep.load = mlx5e_nic_rep_load;
 		rep.unload = mlx5e_nic_rep_unload;
 		rep.vport = FDB_UPLINK_VPORT;
-		rep.priv_data = priv;
+		rep.netdev = netdev;
 		mlx5_eswitch_register_vport_rep(esw, 0, &rep);
 	}
 }
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index 9b1e351..0868677 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -208,7 +208,8 @@ int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv)
 
 int mlx5e_nic_rep_load(struct mlx5_eswitch *esw, struct mlx5_eswitch_rep *rep)
 {
-	struct mlx5e_priv *priv = rep->priv_data;
+	struct net_device *netdev = rep->netdev;
+	struct mlx5e_priv *priv = netdev_priv(netdev);
 
 	if (test_bit(MLX5E_STATE_OPENED, &priv->state))
 		return mlx5e_add_sqs_fwd_rules(priv);
@@ -226,7 +227,8 @@ void mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv *priv)
 void mlx5e_nic_rep_unload(struct mlx5_eswitch *esw,
 			  struct mlx5_eswitch_rep *rep)
 {
-	struct mlx5e_priv *priv = rep->priv_data;
+	struct net_device *netdev = rep->netdev;
+	struct mlx5e_priv *priv = netdev_priv(netdev);
 
 	if (test_bit(MLX5E_STATE_OPENED, &priv->state))
 		mlx5e_remove_sqs_fwd_rules(priv);
@@ -555,7 +557,7 @@ int mlx5e_vport_rep_load(struct mlx5_eswitch *esw,
 		return -EINVAL;
 	}
 
-	rep->priv_data = netdev_priv(netdev);
+	rep->netdev = netdev;
 
 	err = mlx5e_attach_netdev(esw->dev, netdev);
 	if (err) {
@@ -577,7 +579,7 @@ int mlx5e_vport_rep_load(struct mlx5_eswitch *esw,
 	mlx5e_detach_netdev(esw->dev, netdev);
 
 err_destroy_netdev:
-	mlx5e_destroy_netdev(esw->dev, rep->priv_data);
+	mlx5e_destroy_netdev(esw->dev, netdev_priv(netdev));
 
 	return err;
 
@@ -586,10 +588,9 @@ int mlx5e_vport_rep_load(struct mlx5_eswitch *esw,
 void mlx5e_vport_rep_unload(struct mlx5_eswitch *esw,
 			    struct mlx5_eswitch_rep *rep)
 {
-	struct mlx5e_priv *priv = rep->priv_data;
-	struct net_device *netdev = priv->netdev;
+	struct net_device *netdev = rep->netdev;
 
 	unregister_netdev(netdev);
 	mlx5e_detach_netdev(esw->dev, netdev);
-	mlx5e_destroy_netdev(esw->dev, priv);
+	mlx5e_destroy_netdev(esw->dev, netdev_priv(netdev));
 }
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
index cf1aa56..8661dd3 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
@@ -186,7 +186,7 @@ struct mlx5_eswitch_rep {
 					 struct mlx5_eswitch_rep *rep);
 	u16		       vport;
 	u8		       hw_id[ETH_ALEN];
-	void		      *priv_data;
+	struct net_device      *netdev;
 
 	struct mlx5_flow_handle *vport_rx_rule;
 	struct list_head       vport_sqs_list;
@@ -318,6 +318,7 @@ void mlx5_eswitch_register_vport_rep(struct mlx5_eswitch *esw,
 				     struct mlx5_eswitch_rep *rep);
 void mlx5_eswitch_unregister_vport_rep(struct mlx5_eswitch *esw,
 				       int vport_index);
+struct net_device *mlx5_eswitch_get_uplink_netdev(struct mlx5_eswitch *esw);
 
 int mlx5_eswitch_add_vlan_action(struct mlx5_eswitch *esw,
 				 struct mlx5_esw_flow_attr *attr);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
index 5c01550..466e161 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
@@ -970,7 +970,7 @@ void mlx5_eswitch_register_vport_rep(struct mlx5_eswitch *esw,
 	rep->load   = __rep->load;
 	rep->unload = __rep->unload;
 	rep->vport  = __rep->vport;
-	rep->priv_data = __rep->priv_data;
+	rep->netdev = __rep->netdev;
 	ether_addr_copy(rep->hw_id, __rep->hw_id);
 
 	INIT_LIST_HEAD(&rep->vport_sqs_list);
@@ -990,3 +990,13 @@ void mlx5_eswitch_unregister_vport_rep(struct mlx5_eswitch *esw,
 
 	rep->valid = false;
 }
+
+struct net_device *mlx5_eswitch_get_uplink_netdev(struct mlx5_eswitch *esw)
+{
+#define UPLINK_REP_INDEX 0
+	struct mlx5_esw_offload *offloads = &esw->offloads;
+	struct mlx5_eswitch_rep *rep;
+
+	rep = &offloads->vport_reps[UPLINK_REP_INDEX];
+	return rep->netdev;
+}
-- 
1.8.3.1

[PATCH net-next V2 8/8] net/mlx5e: Support adding ingress tc rule when egress device flag is set

[Hadar Hen Zion]

When ndo_setup_tc is called with an egress_dev flag set, it means that
the ndo call was executed on the mirred action (egress) device and not
on the ingress device.

In order to support this kind of ndo_setup_tc call, and insert the
correct decap rule to the hardware, the uplink device on the same eswitch
should be found.

Currently, we use this resolution between the mirred device and the
uplink on the same eswitch to offload vxlan shared device decap rules.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index 0868677..8503788 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -289,6 +289,14 @@ static int mlx5e_rep_ndo_setup_tc(struct net_device *dev, u32 handle,
 	if (TC_H_MAJ(handle) != TC_H_MAJ(TC_H_INGRESS))
 		return -EOPNOTSUPP;
 
+	if (tc->egress_dev) {
+		struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
+		struct net_device *uplink_dev = mlx5_eswitch_get_uplink_netdev(esw);
+
+		return uplink_dev->netdev_ops->ndo_setup_tc(uplink_dev, handle,
+							    proto, tc);
+	}
+
 	switch (tc->type) {
 	case TC_SETUP_CLSFLOWER:
 		switch (tc->cls_flower->command) {
-- 
1.8.3.1

Re: [PATCH net-next V2 0/8] Offloading tc rules using underline Hardware device

[David Miller]

From: Hadar Hen Zion <hadarh@mellanox.com>
Date: Thu,  1 Dec 2016 14:06:32 +0200

> This series adds flower classifier support in offloading tc rules when the
> Software ingress device is different from the Hardware ingress device, 
> such as when dealing with IP tunnels  
> 
> The first two patches are a small fixes to flower, checking the skip_hw flag
> wasn't set before calling the Hardware offloading functions which will try to
> offload the rule.
> 
> The next two patches are infrastructure patches, a preparation for the fourth
> patch which is adding support in flower to offload rules when the ingress
> device is not a Hardware device and therefore can't offload.
> In this case ndo_setup_tc is called with the mirred (egress) device.
> 
> The last three patchs are adding mlx5e support to offload rules using the new
> "egress_device" flag.
 ...
> Changes from v0:
> - check if CONFIG_NET_CLS_ACT is defined befor calling tc_action_ops get_dev()

Series applied, thanks.