Commit c4f33417 authored by David S. Miller's avatar David S. Miller
Browse files

Merge branch 'DSA-tag_8021q-cleanup' 



Vladimir Oltean says:

====================
DSA tag_8021q cleanup

This small series tries to consolidate the VLAN handling in DSA a little
bit. It reworks tag_8021q to be minimally invasive to the dsa_switch_ops
structure. This makes the rest of the code a bit easier to follow.
====================

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents a8c16e8e 88236591

drivers/net/dsa/sja1105/sja1105.h

+1 −2
Original line number Diff line number Diff line
@@ -210,14 +210,13 @@ struct sja1105_private { 
	struct dsa_switch *ds;

	struct list_head dsa_8021q_vlans;

	struct list_head bridge_vlans;

	struct list_head crosschip_links;

	struct sja1105_flow_block flow_block;

	struct sja1105_port ports[SJA1105_NUM_PORTS];

	/* Serializes transmission of management frames so that

	 * the switch doesn't confuse them with one another.

	 */

	struct mutex mgmt_lock;

	bool expect_dsa_8021q;

	struct dsa_8021q_context *dsa_8021q_ctx;

	enum sja1105_vlan_state vlan_state;

	struct sja1105_cbs_entry *cbs;

	struct sja1105_tagger_data tagger_data;

drivers/net/dsa/sja1105/sja1105_main.c

+128 −98
Original line number Diff line number Diff line
@@ -1880,19 +1880,17 @@ static int sja1105_crosschip_bridge_join(struct dsa_switch *ds, 
		if (dsa_to_port(ds, port)->bridge_dev != br)

			continue;



		other_priv->expect_dsa_8021q = true;

		rc = dsa_8021q_crosschip_bridge_join(ds, port, other_ds,

						     other_port,

						     &priv->crosschip_links);

		other_priv->expect_dsa_8021q = false;

		rc = dsa_8021q_crosschip_bridge_join(priv->dsa_8021q_ctx,

						     port,

						     other_priv->dsa_8021q_ctx,

						     other_port);

		if (rc)

			return rc;



		priv->expect_dsa_8021q = true;

		rc = dsa_8021q_crosschip_bridge_join(other_ds, other_port, ds,

						     port,

						     &other_priv->crosschip_links);

		priv->expect_dsa_8021q = false;

		rc = dsa_8021q_crosschip_bridge_join(other_priv->dsa_8021q_ctx,

						     other_port,

						     priv->dsa_8021q_ctx,

						     port);

		if (rc)

			return rc;

	}
@@ -1919,33 +1917,24 @@ static void sja1105_crosschip_bridge_leave(struct dsa_switch *ds, 
		if (dsa_to_port(ds, port)->bridge_dev != br)

			continue;



		other_priv->expect_dsa_8021q = true;

		dsa_8021q_crosschip_bridge_leave(ds, port, other_ds, other_port,

						 &priv->crosschip_links);

		other_priv->expect_dsa_8021q = false;

		dsa_8021q_crosschip_bridge_leave(priv->dsa_8021q_ctx, port,

						 other_priv->dsa_8021q_ctx,

						 other_port);



		priv->expect_dsa_8021q = true;

		dsa_8021q_crosschip_bridge_leave(other_ds, other_port, ds, port,

						 &other_priv->crosschip_links);

		priv->expect_dsa_8021q = false;

		dsa_8021q_crosschip_bridge_leave(other_priv->dsa_8021q_ctx,

						 other_port,

						 priv->dsa_8021q_ctx, port);

	}

}



static int sja1105_setup_8021q_tagging(struct dsa_switch *ds, bool enabled)

{

	struct sja1105_private *priv = ds->priv;

	int rc, i;

	int rc;



	for (i = 0; i < SJA1105_NUM_PORTS; i++) {

		priv->expect_dsa_8021q = true;

		rc = dsa_port_setup_8021q_tagging(ds, i, enabled);

		priv->expect_dsa_8021q = false;

		if (rc < 0) {

			dev_err(ds->dev, "Failed to setup VLAN tagging for port %d: %d\n",

				i, rc);

	rc = dsa_8021q_setup(priv->dsa_8021q_ctx, enabled);

	if (rc)

		return rc;

		}

	}



	dev_info(ds->dev, "%s switch tagging\n",

		 enabled ? "Enabled" : "Disabled");
@@ -2149,12 +2138,12 @@ struct sja1105_crosschip_vlan { 
	bool untagged;

	int port;

	int other_port;

	struct dsa_switch *other_ds;

	struct dsa_8021q_context *other_ctx;

};



struct sja1105_crosschip_switch {

	struct list_head list;

	struct dsa_switch *other_ds;

	struct dsa_8021q_context *other_ctx;

};



static int sja1105_commit_pvid(struct sja1105_private *priv)
@@ -2330,8 +2319,8 @@ sja1105_build_crosschip_subvlans(struct sja1105_private *priv, 


	INIT_LIST_HEAD(&crosschip_vlans);



	list_for_each_entry(c, &priv->crosschip_links, list) {

		struct sja1105_private *other_priv = c->other_ds->priv;

	list_for_each_entry(c, &priv->dsa_8021q_ctx->crosschip_links, list) {

		struct sja1105_private *other_priv = c->other_ctx->ds->priv;



		if (other_priv->vlan_state == SJA1105_VLAN_FILTERING_FULL)

			continue;
@@ -2341,7 +2330,7 @@ sja1105_build_crosschip_subvlans(struct sja1105_private *priv, 
		 */

		if (!dsa_is_user_port(priv->ds, c->port))

			continue;

		if (!dsa_is_user_port(c->other_ds, c->other_port))

		if (!dsa_is_user_port(c->other_ctx->ds, c->other_port))

			continue;



		/* Search for VLANs on the remote port */
@@ -2376,7 +2365,7 @@ sja1105_build_crosschip_subvlans(struct sja1105_private *priv, 
				    tmp->untagged == v->untagged &&

				    tmp->port == c->port &&

				    tmp->other_port == v->port &&

				    tmp->other_ds == c->other_ds) {

				    tmp->other_ctx == c->other_ctx) {

					already_added = true;

					break;

				}
@@ -2394,14 +2383,14 @@ sja1105_build_crosschip_subvlans(struct sja1105_private *priv, 
			tmp->vid = v->vid;

			tmp->port = c->port;

			tmp->other_port = v->port;

			tmp->other_ds = c->other_ds;

			tmp->other_ctx = c->other_ctx;

			tmp->untagged = v->untagged;

			list_add(&tmp->list, &crosschip_vlans);

		}

	}



	list_for_each_entry(tmp, &crosschip_vlans, list) {

		struct sja1105_private *other_priv = tmp->other_ds->priv;

		struct sja1105_private *other_priv = tmp->other_ctx->ds->priv;

		int upstream = dsa_upstream_port(priv->ds, tmp->port);

		int match, subvlan;

		u16 rx_vid;
@@ -2418,7 +2407,7 @@ sja1105_build_crosschip_subvlans(struct sja1105_private *priv, 
			goto out;

		}



		rx_vid = dsa_8021q_rx_vid_subvlan(tmp->other_ds,

		rx_vid = dsa_8021q_rx_vid_subvlan(tmp->other_ctx->ds,

						  tmp->other_port,

						  subvlan);
@@ -2493,11 +2482,11 @@ static int sja1105_notify_crosschip_switches(struct sja1105_private *priv) 


	INIT_LIST_HEAD(&crosschip_switches);



	list_for_each_entry(c, &priv->crosschip_links, list) {

	list_for_each_entry(c, &priv->dsa_8021q_ctx->crosschip_links, list) {

		bool already_added = false;



		list_for_each_entry(s, &crosschip_switches, list) {

			if (s->other_ds == c->other_ds) {

			if (s->other_ctx == c->other_ctx) {

				already_added = true;

				break;

			}
@@ -2512,12 +2501,12 @@ static int sja1105_notify_crosschip_switches(struct sja1105_private *priv) 
			rc = -ENOMEM;

			goto out;

		}

		s->other_ds = c->other_ds;

		s->other_ctx = c->other_ctx;

		list_add(&s->list, &crosschip_switches);

	}



	list_for_each_entry(s, &crosschip_switches, list) {

		struct sja1105_private *other_priv = s->other_ds->priv;

		struct sja1105_private *other_priv = s->other_ctx->ds->priv;



		rc = sja1105_build_vlan_table(other_priv, false);

		if (rc)
@@ -2618,16 +2607,6 @@ out: 
	return rc;

}



/* Select the list to which we should add this VLAN. */

static struct list_head *sja1105_classify_vlan(struct sja1105_private *priv,

					       u16 vid)

{

	if (priv->expect_dsa_8021q)

		return &priv->dsa_8021q_vlans;



	return &priv->bridge_vlans;

}



static int sja1105_vlan_prepare(struct dsa_switch *ds, int port,

				const struct switchdev_obj_port_vlan *vlan)

{
@@ -2642,7 +2621,7 @@ static int sja1105_vlan_prepare(struct dsa_switch *ds, int port, 
	 * configuration done by dsa_8021q.

	 */

	for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {

		if (!priv->expect_dsa_8021q && vid_is_dsa_8021q(vid)) {

		if (vid_is_dsa_8021q(vid)) {

			dev_err(ds->dev, "Range 1024-3071 reserved for dsa_8021q operation\n");

			return -EBUSY;

		}
@@ -2762,38 +2741,26 @@ static int sja1105_vlan_filtering(struct dsa_switch *ds, int port, bool enabled) 
	return sja1105_setup_8021q_tagging(ds, want_tagging);

}



static void sja1105_vlan_add(struct dsa_switch *ds, int port,

			     const struct switchdev_obj_port_vlan *vlan)

/* Returns number of VLANs added (0 or 1) on success,

 * or a negative error code.

 */

static int sja1105_vlan_add_one(struct dsa_switch *ds, int port, u16 vid,

				u16 flags, struct list_head *vlan_list)

{

	struct sja1105_private *priv = ds->priv;

	bool vlan_table_changed = false;

	u16 vid;

	int rc;



	for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {

		bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;

		bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;

	bool untagged = flags & BRIDGE_VLAN_INFO_UNTAGGED;

	bool pvid = flags & BRIDGE_VLAN_INFO_PVID;

	struct sja1105_bridge_vlan *v;

		struct list_head *vlan_list;

		bool already_added = false;



		vlan_list = sja1105_classify_vlan(priv, vid);



		list_for_each_entry(v, vlan_list, list) {

	list_for_each_entry(v, vlan_list, list)

		if (v->port == port && v->vid == vid &&

			    v->untagged == untagged && v->pvid == pvid) {

				already_added = true;

				break;

			}

		}



		if (already_added)

			continue;

		    v->untagged == untagged && v->pvid == pvid)

			/* Already added */

			return 0;



	v = kzalloc(sizeof(*v), GFP_KERNEL);

	if (!v) {

		dev_err(ds->dev, "Out of memory while storing VLAN\n");

			return;

		return -ENOMEM;

	}



	v->port = port;
@@ -2802,6 +2769,40 @@ static void sja1105_vlan_add(struct dsa_switch *ds, int port, 
	v->pvid = pvid;

	list_add(&v->list, vlan_list);



	return 1;

}



/* Returns number of VLANs deleted (0 or 1) */

static int sja1105_vlan_del_one(struct dsa_switch *ds, int port, u16 vid,

				struct list_head *vlan_list)

{

	struct sja1105_bridge_vlan *v, *n;



	list_for_each_entry_safe(v, n, vlan_list, list) {

		if (v->port == port && v->vid == vid) {

			list_del(&v->list);

			kfree(v);

			return 1;

		}

	}



	return 0;

}



static void sja1105_vlan_add(struct dsa_switch *ds, int port,

			     const struct switchdev_obj_port_vlan *vlan)

{

	struct sja1105_private *priv = ds->priv;

	bool vlan_table_changed = false;

	u16 vid;

	int rc;



	for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {

		rc = sja1105_vlan_add_one(ds, port, vid, vlan->flags,

					  &priv->bridge_vlans);

		if (rc < 0)

			return;

		if (rc > 0)

			vlan_table_changed = true;

	}
@@ -2819,29 +2820,50 @@ static int sja1105_vlan_del(struct dsa_switch *ds, int port, 
	struct sja1105_private *priv = ds->priv;

	bool vlan_table_changed = false;

	u16 vid;

	int rc;



	for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {

		struct sja1105_bridge_vlan *v, *n;

		struct list_head *vlan_list;



		vlan_list = sja1105_classify_vlan(priv, vid);



		list_for_each_entry_safe(v, n, vlan_list, list) {

			if (v->port == port && v->vid == vid) {

				list_del(&v->list);

				kfree(v);

		rc = sja1105_vlan_del_one(ds, port, vid, &priv->bridge_vlans);

		if (rc > 0)

			vlan_table_changed = true;

				break;

	}



	if (!vlan_table_changed)

		return 0;



	return sja1105_build_vlan_table(priv, true);

}



static int sja1105_dsa_8021q_vlan_add(struct dsa_switch *ds, int port, u16 vid,

				      u16 flags)

{

	struct sja1105_private *priv = ds->priv;

	int rc;



	rc = sja1105_vlan_add_one(ds, port, vid, flags, &priv->dsa_8021q_vlans);

	if (rc <= 0)

		return rc;



	return sja1105_build_vlan_table(priv, true);

}



	if (!vlan_table_changed)

static int sja1105_dsa_8021q_vlan_del(struct dsa_switch *ds, int port, u16 vid)

{

	struct sja1105_private *priv = ds->priv;

	int rc;



	rc = sja1105_vlan_del_one(ds, port, vid, &priv->dsa_8021q_vlans);

	if (!rc)

		return 0;



	return sja1105_build_vlan_table(priv, true);

}



static const struct dsa_8021q_ops sja1105_dsa_8021q_ops = {

	.vlan_add	= sja1105_dsa_8021q_vlan_add,

	.vlan_del	= sja1105_dsa_8021q_vlan_del,

};



static int sja1105_best_effort_vlan_filtering_get(struct sja1105_private *priv,

						  bool *be_vlan)

{
@@ -3504,7 +3526,15 @@ static int sja1105_probe(struct spi_device *spi) 
	mutex_init(&priv->ptp_data.lock);

	mutex_init(&priv->mgmt_lock);



	INIT_LIST_HEAD(&priv->crosschip_links);

	priv->dsa_8021q_ctx = devm_kzalloc(dev, sizeof(*priv->dsa_8021q_ctx),

					   GFP_KERNEL);

	if (!priv->dsa_8021q_ctx)

		return -ENOMEM;



	priv->dsa_8021q_ctx->ops = &sja1105_dsa_8021q_ops;

	priv->dsa_8021q_ctx->ds = ds;



	INIT_LIST_HEAD(&priv->dsa_8021q_ctx->crosschip_links);

	INIT_LIST_HEAD(&priv->bridge_vlans);

	INIT_LIST_HEAD(&priv->dsa_8021q_vlans);

include/linux/dsa/8021q.h

+28 −21
Original line number Diff line number Diff line
@@ -5,37 +5,47 @@ 
#ifndef _NET_DSA_8021Q_H

#define _NET_DSA_8021Q_H



#include <linux/refcount.h>

#include <linux/types.h>



struct dsa_switch;

struct sk_buff;

struct net_device;

struct packet_type;

struct dsa_8021q_context;



struct dsa_8021q_crosschip_link {

	struct list_head list;

	int port;

	struct dsa_switch *other_ds;

	struct dsa_8021q_context *other_ctx;

	int other_port;

	refcount_t refcount;

};



struct dsa_8021q_ops {

	int (*vlan_add)(struct dsa_switch *ds, int port, u16 vid, u16 flags);

	int (*vlan_del)(struct dsa_switch *ds, int port, u16 vid);

};



struct dsa_8021q_context {

	const struct dsa_8021q_ops *ops;

	struct dsa_switch *ds;

	struct list_head crosschip_links;

};



#define DSA_8021Q_N_SUBVLAN			8



#if IS_ENABLED(CONFIG_NET_DSA_TAG_8021Q)



int dsa_port_setup_8021q_tagging(struct dsa_switch *ds, int index,

				 bool enabled);

int dsa_8021q_setup(struct dsa_8021q_context *ctx, bool enabled);



int dsa_8021q_crosschip_bridge_join(struct dsa_switch *ds, int port,

				    struct dsa_switch *other_ds,

				    int other_port,

				    struct list_head *crosschip_links);

int dsa_8021q_crosschip_bridge_join(struct dsa_8021q_context *ctx, int port,

				    struct dsa_8021q_context *other_ctx,

				    int other_port);



int dsa_8021q_crosschip_bridge_leave(struct dsa_switch *ds, int port,

				     struct dsa_switch *other_ds,

				     int other_port,

				     struct list_head *crosschip_links);

int dsa_8021q_crosschip_bridge_leave(struct dsa_8021q_context *ctx, int port,

				     struct dsa_8021q_context *other_ctx,

				     int other_port);



struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev,

			       u16 tpid, u16 tci);
@@ -56,24 +66,21 @@ bool vid_is_dsa_8021q(u16 vid); 


#else



int dsa_port_setup_8021q_tagging(struct dsa_switch *ds, int index,

				 bool enabled)

int dsa_8021q_setup(struct dsa_8021q_context *ctx, bool enabled)

{

	return 0;

}



int dsa_8021q_crosschip_bridge_join(struct dsa_switch *ds, int port,

				    struct dsa_switch *other_ds,

				    int other_port,

				    struct list_head *crosschip_links)

int dsa_8021q_crosschip_bridge_join(struct dsa_8021q_context *ctx, int port,

				    struct dsa_8021q_context *other_ctx,

				    int other_port)

{

	return 0;

}



int dsa_8021q_crosschip_bridge_leave(struct dsa_switch *ds, int port,

				     struct dsa_switch *other_ds,

				     int other_port,

				     struct list_head *crosschip_links)

int dsa_8021q_crosschip_bridge_leave(struct dsa_8021q_context *ctx, int port,

				     struct dsa_8021q_context *other_ctx,

				     int other_port)

{

	return 0;

}

net/dsa/dsa_priv.h

+0 −2
Original line number Diff line number Diff line
@@ -164,8 +164,6 @@ int dsa_port_vlan_add(struct dsa_port *dp, 
		      struct switchdev_trans *trans);

int dsa_port_vlan_del(struct dsa_port *dp,

		      const struct switchdev_obj_port_vlan *vlan);

int dsa_port_vid_add(struct dsa_port *dp, u16 vid, u16 flags);

int dsa_port_vid_del(struct dsa_port *dp, u16 vid);

int dsa_port_link_register_of(struct dsa_port *dp);

void dsa_port_link_unregister_of(struct dsa_port *dp);

extern const struct phylink_mac_ops dsa_port_phylink_mac_ops;

net/dsa/port.c

+0 −33
Original line number Diff line number Diff line
@@ -433,39 +433,6 @@ int dsa_port_vlan_del(struct dsa_port *dp, 
	return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info);

}



int dsa_port_vid_add(struct dsa_port *dp, u16 vid, u16 flags)

{

	struct switchdev_obj_port_vlan vlan = {

		.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,

		.flags = flags,

		.vid_begin = vid,

		.vid_end = vid,

	};

	struct switchdev_trans trans;

	int err;



	trans.ph_prepare = true;

	err = dsa_port_vlan_add(dp, &vlan, &trans);

	if (err)

		return err;



	trans.ph_prepare = false;

	return dsa_port_vlan_add(dp, &vlan, &trans);

}

EXPORT_SYMBOL(dsa_port_vid_add);



int dsa_port_vid_del(struct dsa_port *dp, u16 vid)

{

	struct switchdev_obj_port_vlan vlan = {

		.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,

		.vid_begin = vid,

		.vid_end = vid,

	};



	return dsa_port_vlan_del(dp, &vlan);

}

EXPORT_SYMBOL(dsa_port_vid_del);



static struct phy_device *dsa_port_get_phy_device(struct dsa_port *dp)

{

	struct device_node *phy_dn;

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