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Date: Mon, 30 Mar 2015 13:54:18 +0200
From: Jiri Pirko <jiri@...nulli.us>
To: sfeldma@...il.com
Cc: netdev@...r.kernel.org, roopa@...ulusnetworks.com,
linux@...ck-us.net, f.fainelli@...il.com
Subject: Re: [PATCH net-next 04/18] switchdev: convert STP update to swdev
attr set
Mon, Mar 30, 2015 at 10:40:22AM CEST, sfeldma@...il.com wrote:
>From: Scott Feldman <sfeldma@...il.com>
>
>STP update is just a writable port attribute, so convert swdev_port_stp_update
>to an attr set.
>
>Signed-off-by: Scott Feldman <sfeldma@...il.com>
>---
> drivers/net/ethernet/rocker/rocker.c | 16 +++++++++++++---
> include/net/switchdev.h | 13 ++-----------
> net/bridge/br_stp.c | 6 +++++-
> net/dsa/slave.c | 19 ++++++++++++++++++-
> net/switchdev/switchdev.c | 28 ----------------------------
> 5 files changed, 38 insertions(+), 44 deletions(-)
>
>diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c
>index 4bcc555..224f91d 100644
>--- a/drivers/net/ethernet/rocker/rocker.c
>+++ b/drivers/net/ethernet/rocker/rocker.c
>@@ -4237,11 +4237,21 @@ static int rocker_port_attr_get(struct net_device *dev, struct swdev_attr *attr)
> return 0;
> }
>
>-static int rocker_port_swdev_port_stp_update(struct net_device *dev, u8 state)
>+static int rocker_port_attr_set(struct net_device *dev, struct swdev_attr *attr)
> {
> struct rocker_port *rocker_port = netdev_priv(dev);
>+ int err = 0;
>+
>+ switch (attr->attr) {
>+ case SWDEV_ATTR_PORT_STP_STATE:
>+ err = rocker_port_stp_update(rocker_port, attr->stp_state);
>+ break;
>+ default:
>+ err = -EOPNOTSUPP;
>+ break;
>+ }
>
>- return rocker_port_stp_update(rocker_port, state);
>+ return err;
> }
>
> static int rocker_port_swdev_fib_ipv4_add(struct net_device *dev,
>@@ -4271,7 +4281,7 @@ static int rocker_port_swdev_fib_ipv4_del(struct net_device *dev,
>
> static const struct swdev_ops rocker_port_swdev_ops = {
> .swdev_port_attr_get = rocker_port_attr_get,
>- .swdev_port_stp_update = rocker_port_swdev_port_stp_update,
>+ .swdev_port_attr_set = rocker_port_attr_set,
> .swdev_fib_ipv4_add = rocker_port_swdev_fib_ipv4_add,
> .swdev_fib_ipv4_del = rocker_port_swdev_fib_ipv4_del,
> };
>diff --git a/include/net/switchdev.h b/include/net/switchdev.h
>index fd36b5c..99050b0 100644
>--- a/include/net/switchdev.h
>+++ b/include/net/switchdev.h
>@@ -17,6 +17,7 @@
> enum swdev_attr_id {
> SWDEV_ATTR_UNDEFINED,
> SWDEV_ATTR_PORT_PARENT_ID,
>+ SWDEV_ATTR_PORT_STP_STATE,
> };
>
> #define SWDEV_ATTR_F_NO_RECURSE BIT(0)
>@@ -27,6 +28,7 @@ struct swdev_attr {
> u32 flags;
> union {
> struct netdev_phys_item_id ppid; /* PORT_PARENT_ID */
>+ u8 stp_state; /* PORT_STP_STATE */
> };
> };
>
>@@ -39,9 +41,6 @@ struct fib_info;
> *
> * @swdev_port_attr_set: Set a port attribute (see swdev_attr).
> *
>- * @swdev_port_stp_update: Called to notify switch device port of bridge
>- * port STP state change.
>- *
> * @swdev_fib_ipv4_add: Called to add/modify IPv4 route to switch device.
> *
> * @swdev_fib_ipv4_del: Called to delete IPv4 route from switch device.
>@@ -51,7 +50,6 @@ struct swdev_ops {
> struct swdev_attr *attr);
> int (*swdev_port_attr_set)(struct net_device *dev,
> struct swdev_attr *attr);
>- int (*swdev_port_stp_update)(struct net_device *dev, u8 state);
> int (*swdev_fib_ipv4_add)(struct net_device *dev, __be32 dst,
> int dst_len, struct fib_info *fi,
> u8 tos, u8 type, u32 nlflags,
>@@ -86,7 +84,6 @@ netdev_switch_notifier_info_to_dev(const struct netdev_switch_notifier_info *inf
>
> int swdev_port_attr_get(struct net_device *dev, struct swdev_attr *attr);
> int swdev_port_attr_set(struct net_device *dev, struct swdev_attr *attr);
>-int netdev_switch_port_stp_update(struct net_device *dev, u8 state);
> int register_netdev_switch_notifier(struct notifier_block *nb);
> int unregister_netdev_switch_notifier(struct notifier_block *nb);
> int call_netdev_switch_notifiers(unsigned long val, struct net_device *dev,
>@@ -119,12 +116,6 @@ static inline int swdev_port_attr_set(struct net_device *dev,
> return -EOPNOTSUPP;
> }
>
>-static inline int netdev_switch_port_stp_update(struct net_device *dev,
>- u8 state)
>-{
>- return -EOPNOTSUPP;
>-}
>-
> static inline int register_netdev_switch_notifier(struct notifier_block *nb)
> {
> return 0;
>diff --git a/net/bridge/br_stp.c b/net/bridge/br_stp.c
>index fb3ebe6..8b2ef23 100644
>--- a/net/bridge/br_stp.c
>+++ b/net/bridge/br_stp.c
>@@ -39,10 +39,14 @@ void br_log_state(const struct net_bridge_port *p)
>
> void br_set_state(struct net_bridge_port *p, unsigned int state)
> {
>+ struct swdev_attr attr = {
>+ .attr = SWDEV_ATTR_PORT_STP_STATE,
>+ .stp_state = state,
>+ };
> int err;
>
> p->state = state;
>- err = netdev_switch_port_stp_update(p->dev, state);
>+ err = swdev_port_attr_set(p->dev, &attr);
Seems nicer to me to provide a wrapper for callers so they don't call
directly swdev_port_attr_set and have no knowledge of swdev_attr.
> if (err && err != -EOPNOTSUPP)
> br_warn(p->br, "error setting offload STP state on port %u(%s)\n",
> (unsigned int) p->port_no, p->dev->name);
>diff --git a/net/dsa/slave.c b/net/dsa/slave.c
>index 2a5bfde..317bb38 100644
>--- a/net/dsa/slave.c
>+++ b/net/dsa/slave.c
>@@ -347,6 +347,23 @@ static int dsa_slave_stp_update(struct net_device *dev, u8 state)
> return ret;
> }
>
>+static int dsa_slave_port_attr_set(struct net_device *dev,
>+ struct swdev_attr *attr)
>+{
>+ int ret = 0;
>+
>+ switch (attr->attr) {
>+ case SWDEV_ATTR_PORT_STP_STATE:
>+ ret = dsa_slave_stp_update(dev, attr->stp_state);
>+ break;
>+ default:
>+ ret = -EOPNOTSUPP;
>+ break;
>+ }
>+
>+ return ret;
>+}
>+
> static int dsa_slave_bridge_port_join(struct net_device *dev,
> struct net_device *br)
> {
>@@ -685,7 +702,7 @@ static const struct net_device_ops dsa_slave_netdev_ops = {
>
> static const struct swdev_ops dsa_slave_swdev_ops = {
> .swdev_port_attr_get = dsa_slave_port_attr_get,
>- .swdev_port_stp_update = dsa_slave_stp_update,
>+ .swdev_port_attr_set = dsa_slave_port_attr_set,
> };
>
> static void dsa_slave_adjust_link(struct net_device *dev)
>diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
>index 24440c5..162b011 100644
>--- a/net/switchdev/switchdev.c
>+++ b/net/switchdev/switchdev.c
>@@ -109,34 +109,6 @@ int swdev_port_attr_set(struct net_device *dev, struct swdev_attr *attr)
> }
> EXPORT_SYMBOL_GPL(swdev_port_attr_set);
>
>-/**
>- * netdev_switch_port_stp_update - Notify switch device port of STP
>- * state change
>- * @dev: port device
>- * @state: port STP state
>- *
>- * Notify switch device port of bridge port STP state change.
>- */
>-int netdev_switch_port_stp_update(struct net_device *dev, u8 state)
>-{
>- const struct swdev_ops *ops = dev->swdev_ops;
>- struct net_device *lower_dev;
>- struct list_head *iter;
>- int err = -EOPNOTSUPP;
>-
>- if (ops && ops->swdev_port_stp_update)
>- return ops->swdev_port_stp_update(dev, state);
>-
>- netdev_for_each_lower_dev(dev, lower_dev, iter) {
>- err = netdev_switch_port_stp_update(lower_dev, state);
>- if (err && err != -EOPNOTSUPP)
>- return err;
>- }
>-
>- return err;
>-}
>-EXPORT_SYMBOL_GPL(netdev_switch_port_stp_update);
>-
> static DEFINE_MUTEX(netdev_switch_mutex);
> static RAW_NOTIFIER_HEAD(netdev_switch_notif_chain);
>
>--
>1.7.10.4
>
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