[patch net-next 0/5] mlxsw: small driver update

[patch net-next 0/5] mlxsw: small driver update

[Jiri Pirko]

From: Jiri Pirko <jiri@mellanox.com>

This patchset contains various small "non-net" fixes and enhancements.

Elad Raz (2):
  mlxsw: Fix mlxsw_i2c_write return value
  mlxsw: cmd: Fix API name comments for event-queues

Yotam Gigi (3):
  mlxsw: spectrum: Make the add_matchall_tc_entry symmetric
  mlxsw: spectrum: Fix order of commands in port remove function
  mlxsw: spectrum: Change ENOTSUPP to EOPNOTSUPP

 drivers/net/ethernet/mellanox/mlxsw/cmd.h      |  10 +--
 drivers/net/ethernet/mellanox/mlxsw/i2c.c      |   2 +-
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 101 +++++++++++++------------
 3 files changed, 59 insertions(+), 54 deletions(-)

-- 
2.7.4

[patch net-next 1/5] mlxsw: Fix mlxsw_i2c_write return value

[Jiri Pirko]

From: Elad Raz <eladr@mellanox.com>

The "err" variable is been checked, return always 0.

Signed-off-by: Elad Raz <eladr@mellanox.com>
Acked-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/i2c.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/i2c.c b/drivers/net/ethernet/mellanox/mlxsw/i2c.c
index e50c8db..12c3a44 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/i2c.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/i2c.c
@@ -338,7 +338,7 @@ mlxsw_i2c_write(struct device *dev, size_t in_mbox_size, u8 *in_mbox, int num,
 		return -EIO;
 	}
 
-	return err > 0 ? 0 : err;
+	return 0;
 }
 
 /* Routine executes I2C command. */
-- 
2.7.4

[patch net-next 2/5] mlxsw: cmd: Fix API name comments for event-queues

[Jiri Pirko]

From: Elad Raz <eladr@mellanox.com>

Probably some copy-paste error from "int_msix" that caused "int_" prefix to
appear in the comments for all "eq_" APIs.

Signed-off-by: Elad Raz <eladr@mellanox.com>
Acked-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/cmd.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/cmd.h b/drivers/net/ethernet/mellanox/mlxsw/cmd.h
index 56e19b0..a1b4842 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/cmd.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/cmd.h
@@ -1132,12 +1132,12 @@ static inline int mlxsw_cmd_sw2hw_eq(struct mlxsw_core *mlxsw_core,
  */
 MLXSW_ITEM32(cmd_mbox, sw2hw_eq, int_msix, 0x00, 24, 1);
 
-/* cmd_mbox_sw2hw_eq_int_oi
+/* cmd_mbox_sw2hw_eq_oi
  * When set, overrun ignore is enabled.
  */
 MLXSW_ITEM32(cmd_mbox, sw2hw_eq, oi, 0x00, 12, 1);
 
-/* cmd_mbox_sw2hw_eq_int_st
+/* cmd_mbox_sw2hw_eq_st
  * Event delivery state machine
  * 0x0 - FIRED
  * 0x1 - ARMED (Request for Notification)
@@ -1146,19 +1146,19 @@ MLXSW_ITEM32(cmd_mbox, sw2hw_eq, oi, 0x00, 12, 1);
  */
 MLXSW_ITEM32(cmd_mbox, sw2hw_eq, st, 0x00, 8, 2);
 
-/* cmd_mbox_sw2hw_eq_int_log_eq_size
+/* cmd_mbox_sw2hw_eq_log_eq_size
  * Log (base 2) of the EQ size (in entries).
  */
 MLXSW_ITEM32(cmd_mbox, sw2hw_eq, log_eq_size, 0x00, 0, 4);
 
-/* cmd_mbox_sw2hw_eq_int_producer_counter
+/* cmd_mbox_sw2hw_eq_producer_counter
  * Producer Counter. The counter is incremented for each EQE that is written
  * by the HW to the EQ.
  * Maintained by HW (valid for the QUERY_EQ command only)
  */
 MLXSW_ITEM32(cmd_mbox, sw2hw_eq, producer_counter, 0x04, 0, 16);
 
-/* cmd_mbox_sw2hw_eq_int_pa
+/* cmd_mbox_sw2hw_eq_pa
  * Physical Address.
  */
 MLXSW_ITEM64_INDEXED(cmd_mbox, sw2hw_eq, pa, 0x10, 11, 53, 0x08, 0x00, true);
-- 
2.7.4

[patch net-next 3/5] mlxsw: spectrum: Make the add_matchall_tc_entry symmetric

[Jiri Pirko]

From: Yotam Gigi <yotamg@mellanox.com>

Currently, the mlxsw spectrum driver only supports offloading the matchall
classifier together with the mirred action. To allow more matchall tc
offloads, make the code symmetric so that it can be easily extended later
on for other actions.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 91 ++++++++++++++------------
 1 file changed, 48 insertions(+), 43 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 46c53a0..f4b8ba2 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -1161,8 +1161,8 @@ static int mlxsw_sp_port_get_phys_port_name(struct net_device *dev, char *name,
 }
 
 static struct mlxsw_sp_port_mall_tc_entry *
-mlxsw_sp_port_mirror_entry_find(struct mlxsw_sp_port *port,
-				unsigned long cookie) {
+mlxsw_sp_port_mall_tc_entry_find(struct mlxsw_sp_port *port,
+				 unsigned long cookie) {
 	struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
 
 	list_for_each_entry(mall_tc_entry, &port->mall_tc_list, list)
@@ -1174,17 +1174,15 @@ mlxsw_sp_port_mirror_entry_find(struct mlxsw_sp_port *port,
 
 static int
 mlxsw_sp_port_add_cls_matchall_mirror(struct mlxsw_sp_port *mlxsw_sp_port,
-				      struct tc_cls_matchall_offload *cls,
+				      struct mlxsw_sp_port_mall_mirror_tc_entry *mirror,
 				      const struct tc_action *a,
 				      bool ingress)
 {
-	struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
 	struct net *net = dev_net(mlxsw_sp_port->dev);
 	enum mlxsw_sp_span_type span_type;
 	struct mlxsw_sp_port *to_port;
 	struct net_device *to_dev;
 	int ifindex;
-	int err;
 
 	ifindex = tcf_mirred_ifindex(a);
 	to_dev = __dev_get_by_index(net, ifindex);
@@ -1199,26 +1197,24 @@ mlxsw_sp_port_add_cls_matchall_mirror(struct mlxsw_sp_port *mlxsw_sp_port,
 	}
 	to_port = netdev_priv(to_dev);
 
-	mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
-	if (!mall_tc_entry)
-		return -ENOMEM;
-
-	mall_tc_entry->cookie = cls->cookie;
-	mall_tc_entry->type = MLXSW_SP_PORT_MALL_MIRROR;
-	mall_tc_entry->mirror.to_local_port = to_port->local_port;
-	mall_tc_entry->mirror.ingress = ingress;
-	list_add_tail(&mall_tc_entry->list, &mlxsw_sp_port->mall_tc_list);
-
+	mirror->to_local_port = to_port->local_port;
+	mirror->ingress = ingress;
 	span_type = ingress ? MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
-	err = mlxsw_sp_span_mirror_add(mlxsw_sp_port, to_port, span_type);
-	if (err)
-		goto err_mirror_add;
-	return 0;
+	return mlxsw_sp_span_mirror_add(mlxsw_sp_port, to_port, span_type);
+}
 
-err_mirror_add:
-	list_del(&mall_tc_entry->list);
-	kfree(mall_tc_entry);
-	return err;
+static void
+mlxsw_sp_port_del_cls_matchall_mirror(struct mlxsw_sp_port *mlxsw_sp_port,
+				      struct mlxsw_sp_port_mall_mirror_tc_entry *mirror)
+{
+	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+	enum mlxsw_sp_span_type span_type;
+	struct mlxsw_sp_port *to_port;
+
+	to_port = mlxsw_sp->ports[mirror->to_local_port];
+	span_type = mirror->ingress ?
+			MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
+	mlxsw_sp_span_mirror_remove(mlxsw_sp_port, to_port, span_type);
 }
 
 static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
@@ -1226,6 +1222,7 @@ static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
 					  struct tc_cls_matchall_offload *cls,
 					  bool ingress)
 {
+	struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
 	const struct tc_action *a;
 	LIST_HEAD(actions);
 	int err;
@@ -1235,50 +1232,58 @@ static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
 		return -ENOTSUPP;
 	}
 
+	mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
+	if (!mall_tc_entry)
+		return -ENOMEM;
+	mall_tc_entry->cookie = cls->cookie;
+
 	tcf_exts_to_list(cls->exts, &actions);
-	list_for_each_entry(a, &actions, list) {
-		if (!is_tcf_mirred_egress_mirror(a) ||
-		    protocol != htons(ETH_P_ALL)) {
-			return -ENOTSUPP;
-		}
+	a = list_first_entry(&actions, struct tc_action, list);
 
-		err = mlxsw_sp_port_add_cls_matchall_mirror(mlxsw_sp_port, cls,
-							    a, ingress);
-		if (err)
-			return err;
+	if (is_tcf_mirred_egress_mirror(a) && protocol == htons(ETH_P_ALL)) {
+		struct mlxsw_sp_port_mall_mirror_tc_entry *mirror;
+
+		mall_tc_entry->type = MLXSW_SP_PORT_MALL_MIRROR;
+		mirror = &mall_tc_entry->mirror;
+		err = mlxsw_sp_port_add_cls_matchall_mirror(mlxsw_sp_port,
+							    mirror, a, ingress);
+	} else {
+		err = -EOPNOTSUPP;
 	}
 
+	if (err)
+		goto err_add_action;
+
+	list_add_tail(&mall_tc_entry->list, &mlxsw_sp_port->mall_tc_list);
 	return 0;
+
+err_add_action:
+	kfree(mall_tc_entry);
+	return err;
 }
 
 static void mlxsw_sp_port_del_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
 					   struct tc_cls_matchall_offload *cls)
 {
-	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
 	struct mlxsw_sp_port_mall_tc_entry *mall_tc_entry;
-	enum mlxsw_sp_span_type span_type;
-	struct mlxsw_sp_port *to_port;
 
-	mall_tc_entry = mlxsw_sp_port_mirror_entry_find(mlxsw_sp_port,
-							cls->cookie);
+	mall_tc_entry = mlxsw_sp_port_mall_tc_entry_find(mlxsw_sp_port,
+							 cls->cookie);
 	if (!mall_tc_entry) {
 		netdev_dbg(mlxsw_sp_port->dev, "tc entry not found on port\n");
 		return;
 	}
+	list_del(&mall_tc_entry->list);
 
 	switch (mall_tc_entry->type) {
 	case MLXSW_SP_PORT_MALL_MIRROR:
-		to_port = mlxsw_sp->ports[mall_tc_entry->mirror.to_local_port];
-		span_type = mall_tc_entry->mirror.ingress ?
-				MLXSW_SP_SPAN_INGRESS : MLXSW_SP_SPAN_EGRESS;
-
-		mlxsw_sp_span_mirror_remove(mlxsw_sp_port, to_port, span_type);
+		mlxsw_sp_port_del_cls_matchall_mirror(mlxsw_sp_port,
+						      &mall_tc_entry->mirror);
 		break;
 	default:
 		WARN_ON(1);
 	}
 
-	list_del(&mall_tc_entry->list);
 	kfree(mall_tc_entry);
 }
 
-- 
2.7.4

[patch net-next 4/5] mlxsw: spectrum: Fix order of commands in port remove function

[Jiri Pirko]

From: Yotam Gigi <yotamg@mellanox.com>

Fix the order of the free directives to match the port init function

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index f4b8ba2..1f4fdce 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -2431,8 +2431,8 @@ static void __mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
 	mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
 	mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
 	mlxsw_sp_port_module_unmap(mlxsw_sp, mlxsw_sp_port->local_port);
-	free_percpu(mlxsw_sp_port->pcpu_stats);
 	kfree(mlxsw_sp_port->hw_stats.cache);
+	free_percpu(mlxsw_sp_port->pcpu_stats);
 	kfree(mlxsw_sp_port->untagged_vlans);
 	kfree(mlxsw_sp_port->active_vlans);
 	WARN_ON_ONCE(!list_empty(&mlxsw_sp_port->vports_list));
-- 
2.7.4

[patch net-next 5/5] mlxsw: spectrum: Change ENOTSUPP to EOPNOTSUPP

[Jiri Pirko]

From: Yotam Gigi <yotamg@mellanox.com>

As ENOTSUPP is specific to NFS, change the return error value to
EOPNOTSUPP in various places in the mlxsw driver.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 1f4fdce..d0e803f 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -1193,7 +1193,7 @@ mlxsw_sp_port_add_cls_matchall_mirror(struct mlxsw_sp_port *mlxsw_sp_port,
 
 	if (!mlxsw_sp_port_dev_check(to_dev)) {
 		netdev_err(mlxsw_sp_port->dev, "Cannot mirror to a non-spectrum port");
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 	}
 	to_port = netdev_priv(to_dev);
 
@@ -1229,7 +1229,7 @@ static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port,
 
 	if (!tc_single_action(cls->exts)) {
 		netdev_err(mlxsw_sp_port->dev, "only singular actions are supported\n");
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 	}
 
 	mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
@@ -1309,7 +1309,7 @@ static int mlxsw_sp_setup_tc(struct net_device *dev, u32 handle,
 		}
 	}
 
-	return -ENOTSUPP;
+	return -EOPNOTSUPP;
 }
 
 static const struct net_device_ops mlxsw_sp_port_netdev_ops = {
@@ -1652,7 +1652,7 @@ mlxsw_sp_get_hw_stats_by_group(struct mlxsw_sp_port_hw_stats **p_hw_stats,
 		break;
 	default:
 		WARN_ON(1);
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 	}
 	return 0;
 }
-- 
2.7.4

Re: [patch net-next 0/5] mlxsw: small driver update

[David Miller]

From: Jiri Pirko <jiri@resnulli.us>
Date: Mon,  9 Jan 2017 11:25:43 +0100

> This patchset contains various small "non-net" fixes and enhancements.

Series applied, thanks Jiri.