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Message-Id: <20200907182910.1285496-3-olteanv@gmail.com>
Date: Mon, 7 Sep 2020 21:29:08 +0300
From: Vladimir Oltean <olteanv@...il.com>
To: davem@...emloft.net
Cc: f.fainelli@...il.com, vivien.didelot@...il.com, andrew@...n.ch,
netdev@...r.kernel.org
Subject: [PATCH net-next 2/4] net: dsa: tag_8021q: add a context structure
From: Vladimir Oltean <vladimir.oltean@....com>
While working on another tag_8021q driver implementation, some things
became apparent:
- It is not mandatory for a DSA driver to offload the tag_8021q VLANs by
using the VLAN table per se. For example, it can add custom TCAM rules
that simply encapsulate RX traffic, and redirect & decapsulate rules
for TX traffic. For such a driver, it makes no sense to receive the
tag_8021q configuration through the same callback as it receives the
VLAN configuration from the bridge and the 8021q modules.
- Currently, sja1105 (the only tag_8021q user) sets a
priv->expect_dsa_8021q variable to distinguish between the bridge
calling, and tag_8021q calling. That can be improved, to say the
least.
- The crosschip bridging operations are, in fact, stateful already. The
list of crosschip_links must be kept by the caller and passed to the
relevant tag_8021q functions.
So it would be nice if the tag_8021q configuration was more
self-contained. This patch attempts to do that.
Create a struct dsa_8021q_context which encapsulates a struct
dsa_switch, and has 2 function pointers for adding and deleting a VLAN.
These will replace the previous channel to the driver, which was through
the .port_vlan_add and .port_vlan_del callbacks of dsa_switch_ops.
Also put the list of crosschip_links into this dsa_8021q_context.
Drivers that don't support cross-chip bridging can simply omit to
initialize this list, as long as they dont call any cross-chip function.
The rest of the patch is mostly plain refactoring of "ds" -> "ctx". The
dsa_8021q_context structure needs to be propagated because adding a VLAN
is now done through the ops function pointers inside of it.
Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
drivers/net/dsa/sja1105/sja1105.h | 3 +-
drivers/net/dsa/sja1105/sja1105_main.c | 244 +++++++++++++++----------
include/linux/dsa/8021q.h | 48 ++---
net/dsa/tag_8021q.c | 138 +++++++-------
4 files changed, 249 insertions(+), 184 deletions(-)
diff --git a/drivers/net/dsa/sja1105/sja1105.h b/drivers/net/dsa/sja1105/sja1105.h
index ba70b40a9a95..40b492cb1454 100644
--- a/drivers/net/dsa/sja1105/sja1105.h
+++ b/drivers/net/dsa/sja1105/sja1105.h
@@ -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;
diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c
index 5a28dfb36ec3..045077252799 100644
--- a/drivers/net/dsa/sja1105/sja1105_main.c
+++ b/drivers/net/dsa/sja1105/sja1105_main.c
@@ -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);
- return 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)
@@ -2308,6 +2297,9 @@ static int sja1105_build_subvlans(struct sja1105_private *priv,
return 0;
}
+#define ctx_to_sja1105(ctx) \
+ container_of((ctx), struct sja1105_private, dsa_8021q_ctx)
+
/* Sadly, in crosschip scenarios where the CPU port is also the link to another
* switch, we should retag backwards (the dsa_8021q vid to the original vid) on
* the CPU port of neighbour switches.
@@ -2330,8 +2322,12 @@ 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;
+ struct dsa_switch *other_ds;
+
+ other_priv = ctx_to_sja1105(c->other_ctx);
+ other_ds = priv->ds;
if (other_priv->vlan_state == SJA1105_VLAN_FILTERING_FULL)
continue;
@@ -2341,7 +2337,7 @@ 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(other_ds, c->other_port))
continue;
/* Search for VLANs on the remote port */
@@ -2376,7 +2372,7 @@ 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;
}
@@ -2394,18 +2390,22 @@ 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;
- int upstream = dsa_upstream_port(priv->ds, tmp->port);
- int match, subvlan;
+ struct sja1105_private *other_priv;
+ int upstream, match, subvlan;
+ struct dsa_switch *other_ds;
u16 rx_vid;
+ upstream = dsa_upstream_port(priv->ds, tmp->port);
+ other_priv = ctx_to_sja1105(tmp->other_ctx);
+ other_ds = other_priv->ds;
+
subvlan = sja1105_find_committed_subvlan(other_priv,
tmp->other_port,
tmp->vid);
@@ -2418,7 +2418,7 @@ 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(other_ds,
tmp->other_port,
subvlan);
@@ -2493,11 +2493,11 @@ 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 +2512,14 @@ 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;
+
+ other_priv = ctx_to_sja1105(s->other_ctx);
rc = sja1105_build_vlan_table(other_priv, false);
if (rc)
@@ -2618,16 +2620,6 @@ static int sja1105_build_vlan_table(struct sja1105_private *priv, bool notify)
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 +2634,7 @@ 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;
}
@@ -2762,6 +2754,60 @@ static int sja1105_vlan_filtering(struct dsa_switch *ds, int port, bool enabled)
return sja1105_setup_8021q_tagging(ds, want_tagging);
}
+/* 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)
+{
+ bool untagged = flags & BRIDGE_VLAN_INFO_UNTAGGED;
+ bool pvid = flags & BRIDGE_VLAN_INFO_PVID;
+ struct sja1105_bridge_vlan *v;
+ bool already_added = false;
+
+ 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)
+ return 0;
+
+ v = kzalloc(sizeof(*v), GFP_KERNEL);
+ if (!v) {
+ dev_err(ds->dev, "Out of memory while storing VLAN\n");
+ return -ENOMEM;
+ }
+
+ v->port = port;
+ v->vid = vid;
+ v->untagged = untagged;
+ 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)
{
@@ -2771,38 +2817,12 @@ static void sja1105_vlan_add(struct dsa_switch *ds, int port,
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;
- 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) {
- if (v->port == port && v->vid == vid &&
- v->untagged == untagged && v->pvid == pvid) {
- already_added = true;
- break;
- }
- }
-
- if (already_added)
- continue;
-
- v = kzalloc(sizeof(*v), GFP_KERNEL);
- if (!v) {
- dev_err(ds->dev, "Out of memory while storing VLAN\n");
+ rc = sja1105_vlan_add_one(ds, port, vid, vlan->flags,
+ &priv->bridge_vlans);
+ if (rc < 0)
return;
- }
-
- v->port = port;
- v->vid = vid;
- v->untagged = untagged;
- v->pvid = pvid;
- list_add(&v->list, vlan_list);
-
- vlan_table_changed = true;
+ if (rc > 0)
+ vlan_table_changed = true;
}
if (!vlan_table_changed)
@@ -2819,21 +2839,12 @@ 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);
- vlan_table_changed = true;
- break;
- }
- }
+ rc = sja1105_vlan_del_one(ds, port, vid, &priv->bridge_vlans);
+ if (rc > 0)
+ vlan_table_changed = true;
}
if (!vlan_table_changed)
@@ -2842,6 +2853,36 @@ static int sja1105_vlan_del(struct dsa_switch *ds, int port,
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);
+}
+
+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 +3545,10 @@ 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.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);
diff --git a/include/linux/dsa/8021q.h b/include/linux/dsa/8021q.h
index 804750122c66..2b003ae9fb38 100644
--- a/include/linux/dsa/8021q.h
+++ b/include/linux/dsa/8021q.h
@@ -12,31 +12,40 @@ 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);
@@ -57,24 +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;
}
diff --git a/net/dsa/tag_8021q.c b/net/dsa/tag_8021q.c
index 780b2a15ac9b..5baeb0893950 100644
--- a/net/dsa/tag_8021q.c
+++ b/net/dsa/tag_8021q.c
@@ -146,15 +146,15 @@ EXPORT_SYMBOL_GPL(vid_is_dsa_8021q);
* user explicitly configured this @vid through the bridge core, then the @vid
* is installed again, but this time with the flags from the bridge layer.
*/
-static int dsa_8021q_vid_apply(struct dsa_switch *ds, int port, u16 vid,
+static int dsa_8021q_vid_apply(struct dsa_8021q_context *ctx, int port, u16 vid,
u16 flags, bool enabled)
{
- struct dsa_port *dp = dsa_to_port(ds, port);
+ struct dsa_port *dp = dsa_to_port(ctx->ds, port);
if (enabled)
- return dsa_port_vid_add(dp, vid, flags);
+ return ctx->ops->vlan_add(ctx->ds, dp->index, vid, flags);
- return dsa_port_vid_del(dp, vid);
+ return ctx->ops->vlan_del(ctx->ds, dp->index, vid);
}
/* RX VLAN tagging (left) and TX VLAN tagging (right) setup shown for a single
@@ -209,17 +209,18 @@ static int dsa_8021q_vid_apply(struct dsa_switch *ds, int port, u16 vid,
* +-+-----+-+-----+-+-----+-+-----+-+ +-+-----+-+-----+-+-----+-+-----+-+
* swp0 swp1 swp2 swp3 swp0 swp1 swp2 swp3
*/
-int dsa_port_setup_8021q_tagging(struct dsa_switch *ds, int port, bool enabled)
+static int dsa_8021q_setup_port(struct dsa_8021q_context *ctx, int port,
+ bool enabled)
{
- int upstream = dsa_upstream_port(ds, port);
- u16 rx_vid = dsa_8021q_rx_vid(ds, port);
- u16 tx_vid = dsa_8021q_tx_vid(ds, port);
+ int upstream = dsa_upstream_port(ctx->ds, port);
+ u16 rx_vid = dsa_8021q_rx_vid(ctx->ds, port);
+ u16 tx_vid = dsa_8021q_tx_vid(ctx->ds, port);
int i, err;
/* The CPU port is implicitly configured by
* configuring the front-panel ports
*/
- if (!dsa_is_user_port(ds, port))
+ if (!dsa_is_user_port(ctx->ds, port))
return 0;
/* Add this user port's RX VID to the membership list of all others
@@ -227,7 +228,7 @@ int dsa_port_setup_8021q_tagging(struct dsa_switch *ds, int port, bool enabled)
* L2 forwarding rules still take precedence when there are no VLAN
* restrictions, so there are no concerns about leaking traffic.
*/
- for (i = 0; i < ds->num_ports; i++) {
+ for (i = 0; i < ctx->ds->num_ports; i++) {
u16 flags;
if (i == upstream)
@@ -240,9 +241,10 @@ int dsa_port_setup_8021q_tagging(struct dsa_switch *ds, int port, bool enabled)
/* The RX VID is a regular VLAN on all others */
flags = BRIDGE_VLAN_INFO_UNTAGGED;
- err = dsa_8021q_vid_apply(ds, i, rx_vid, flags, enabled);
+ err = dsa_8021q_vid_apply(ctx, i, rx_vid, flags, enabled);
if (err) {
- dev_err(ds->dev, "Failed to apply RX VID %d to port %d: %d\n",
+ dev_err(ctx->ds->dev,
+ "Failed to apply RX VID %d to port %d: %d\n",
rx_vid, port, err);
return err;
}
@@ -251,80 +253,100 @@ int dsa_port_setup_8021q_tagging(struct dsa_switch *ds, int port, bool enabled)
/* CPU port needs to see this port's RX VID
* as tagged egress.
*/
- err = dsa_8021q_vid_apply(ds, upstream, rx_vid, 0, enabled);
+ err = dsa_8021q_vid_apply(ctx, upstream, rx_vid, 0, enabled);
if (err) {
- dev_err(ds->dev, "Failed to apply RX VID %d to port %d: %d\n",
+ dev_err(ctx->ds->dev,
+ "Failed to apply RX VID %d to port %d: %d\n",
rx_vid, port, err);
return err;
}
/* Finally apply the TX VID on this port and on the CPU port */
- err = dsa_8021q_vid_apply(ds, port, tx_vid, BRIDGE_VLAN_INFO_UNTAGGED,
+ err = dsa_8021q_vid_apply(ctx, port, tx_vid, BRIDGE_VLAN_INFO_UNTAGGED,
enabled);
if (err) {
- dev_err(ds->dev, "Failed to apply TX VID %d on port %d: %d\n",
+ dev_err(ctx->ds->dev,
+ "Failed to apply TX VID %d on port %d: %d\n",
tx_vid, port, err);
return err;
}
- err = dsa_8021q_vid_apply(ds, upstream, tx_vid, 0, enabled);
+ err = dsa_8021q_vid_apply(ctx, upstream, tx_vid, 0, enabled);
if (err) {
- dev_err(ds->dev, "Failed to apply TX VID %d on port %d: %d\n",
+ dev_err(ctx->ds->dev,
+ "Failed to apply TX VID %d on port %d: %d\n",
tx_vid, upstream, err);
return err;
}
return err;
}
-EXPORT_SYMBOL_GPL(dsa_port_setup_8021q_tagging);
-static int dsa_8021q_crosschip_link_apply(struct dsa_switch *ds, int port,
- struct dsa_switch *other_ds,
+int dsa_8021q_setup(struct dsa_8021q_context *ctx, bool enabled)
+{
+ int rc, port;
+
+ for (port = 0; port < ctx->ds->num_ports; port++) {
+ rc = dsa_8021q_setup_port(ctx, port, enabled);
+ if (rc < 0) {
+ dev_err(ctx->ds->dev,
+ "Failed to setup VLAN tagging for port %d: %d\n",
+ port, rc);
+ return rc;
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(dsa_8021q_setup);
+
+static int dsa_8021q_crosschip_link_apply(struct dsa_8021q_context *ctx,
+ int port,
+ struct dsa_8021q_context *other_ctx,
int other_port, bool enabled)
{
- u16 rx_vid = dsa_8021q_rx_vid(ds, port);
+ u16 rx_vid = dsa_8021q_rx_vid(ctx->ds, port);
/* @rx_vid of local @ds port @port goes to @other_port of
* @other_ds
*/
- return dsa_8021q_vid_apply(other_ds, other_port, rx_vid,
+ return dsa_8021q_vid_apply(other_ctx, other_port, rx_vid,
BRIDGE_VLAN_INFO_UNTAGGED, enabled);
}
-static int dsa_8021q_crosschip_link_add(struct dsa_switch *ds, int port,
- struct dsa_switch *other_ds,
- int other_port,
- struct list_head *crosschip_links)
+static int dsa_8021q_crosschip_link_add(struct dsa_8021q_context *ctx, int port,
+ struct dsa_8021q_context *other_ctx,
+ int other_port)
{
struct dsa_8021q_crosschip_link *c;
- list_for_each_entry(c, crosschip_links, list) {
- if (c->port == port && c->other_ds == other_ds &&
+ list_for_each_entry(c, &ctx->crosschip_links, list) {
+ if (c->port == port && c->other_ctx == other_ctx &&
c->other_port == other_port) {
refcount_inc(&c->refcount);
return 0;
}
}
- dev_dbg(ds->dev, "adding crosschip link from port %d to %s port %d\n",
- port, dev_name(other_ds->dev), other_port);
+ dev_dbg(ctx->ds->dev,
+ "adding crosschip link from port %d to %s port %d\n",
+ port, dev_name(other_ctx->ds->dev), other_port);
c = kzalloc(sizeof(*c), GFP_KERNEL);
if (!c)
return -ENOMEM;
c->port = port;
- c->other_ds = other_ds;
+ c->other_ctx = other_ctx;
c->other_port = other_port;
refcount_set(&c->refcount, 1);
- list_add(&c->list, crosschip_links);
+ list_add(&c->list, &ctx->crosschip_links);
return 0;
}
-static void dsa_8021q_crosschip_link_del(struct dsa_switch *ds,
+static void dsa_8021q_crosschip_link_del(struct dsa_8021q_context *ctx,
struct dsa_8021q_crosschip_link *c,
- struct list_head *crosschip_links,
bool *keep)
{
*keep = !refcount_dec_and_test(&c->refcount);
@@ -332,9 +354,9 @@ static void dsa_8021q_crosschip_link_del(struct dsa_switch *ds,
if (*keep)
return;
- dev_dbg(ds->dev,
+ dev_dbg(ctx->ds->dev,
"deleting crosschip link from port %d to %s port %d\n",
- c->port, dev_name(c->other_ds->dev), c->other_port);
+ c->port, dev_name(c->other_ctx->ds->dev), c->other_port);
list_del(&c->list);
kfree(c);
@@ -347,64 +369,58 @@ static void dsa_8021q_crosschip_link_del(struct dsa_switch *ds,
* or untagged: it doesn't matter, since it should never egress a frame having
* our @rx_vid.
*/
-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)
{
/* @other_upstream is how @other_ds reaches us. If we are part
* of disjoint trees, then we are probably connected through
* our CPU ports. If we're part of the same tree though, we should
* probably use dsa_towards_port.
*/
- int other_upstream = dsa_upstream_port(other_ds, other_port);
+ int other_upstream = dsa_upstream_port(other_ctx->ds, other_port);
int rc;
- rc = dsa_8021q_crosschip_link_add(ds, port, other_ds,
- other_port, crosschip_links);
+ rc = dsa_8021q_crosschip_link_add(ctx, port, other_ctx, other_port);
if (rc)
return rc;
- rc = dsa_8021q_crosschip_link_apply(ds, port, other_ds,
+ rc = dsa_8021q_crosschip_link_apply(ctx, port, other_ctx,
other_port, true);
if (rc)
return rc;
- rc = dsa_8021q_crosschip_link_add(ds, port, other_ds,
- other_upstream,
- crosschip_links);
+ rc = dsa_8021q_crosschip_link_add(ctx, port, other_ctx, other_upstream);
if (rc)
return rc;
- return dsa_8021q_crosschip_link_apply(ds, port, other_ds,
+ return dsa_8021q_crosschip_link_apply(ctx, port, other_ctx,
other_upstream, true);
}
EXPORT_SYMBOL_GPL(dsa_8021q_crosschip_bridge_join);
-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)
{
- int other_upstream = dsa_upstream_port(other_ds, other_port);
+ int other_upstream = dsa_upstream_port(other_ctx->ds, other_port);
struct dsa_8021q_crosschip_link *c, *n;
- list_for_each_entry_safe(c, n, crosschip_links, list) {
- if (c->port == port && c->other_ds == other_ds &&
+ list_for_each_entry_safe(c, n, &ctx->crosschip_links, list) {
+ if (c->port == port && c->other_ctx == other_ctx &&
(c->other_port == other_port ||
c->other_port == other_upstream)) {
- struct dsa_switch *other_ds = c->other_ds;
+ struct dsa_8021q_context *other_ctx = c->other_ctx;
int other_port = c->other_port;
bool keep;
int rc;
- dsa_8021q_crosschip_link_del(ds, c, crosschip_links,
- &keep);
+ dsa_8021q_crosschip_link_del(ctx, c, &keep);
if (keep)
continue;
- rc = dsa_8021q_crosschip_link_apply(ds, port,
- other_ds,
+ rc = dsa_8021q_crosschip_link_apply(ctx, port,
+ other_ctx,
other_port,
false);
if (rc)
--
2.25.1
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