Horatiu Vultur
2021-Jan-23 16:18 UTC
[Bridge] [PATCH net-next 0/4] bridge: mrp: Extend br_mrp_switchdev_*
This patch series extends MRP switchdev to allow the SW to have a better
understanding if the HW can implment the MRP functionality or it needs to
help the HW to run it. There are 3 cases:
- when HW can't implement at all the functionality.
- when HW can implement a part of the functionality but needs the SW
implement the rest. For example if it can't detect when it stops
receiving MRP Test frames but it can copy the MRP frames to CPU to
allow the SW to determin this. Another example is generating the MRP
Test frames. If HW can't do that then the SW is used as backup.
- when HW can implement completely the functionality.
So, initially the SW tries to offload the entire functionality in HW, if
that fails it tries offload parts of the functionality in HW and use the
SW as helper and if also this fails then MRP can't run on this HW.
Horatiu Vultur (4):
switchdev: mrp: Extend ring_role_mrp and in_role_mrp
bridge: mrp: Add 'enum br_mrp_hw_support'
bridge: mrp: Extend br_mrp_switchdev to detect better the errors
bridge: mrp: Update br_mrp to use new return values of
br_mrp_switchdev
include/net/switchdev.h | 2 +
net/bridge/br_mrp.c | 43 +++++---
net/bridge/br_mrp_switchdev.c | 189 +++++++++++++++++++++++++---------
net/bridge/br_private_mrp.h | 38 +++++--
4 files changed, 195 insertions(+), 77 deletions(-)
--
2.27.0
Horatiu Vultur
2021-Jan-23 16:18 UTC
[Bridge] [PATCH net-next 1/4] switchdev: mrp: Extend ring_role_mrp and in_role_mrp
Add the member sw_backup to the structures switchdev_obj_ring_role_mrp
and switchdev_obj_in_role_mrp. In this way the SW can call the driver in
2 ways, once when sw_backup is set to false, meaning that the driver
should implement this completely in HW. And if that is not supported the
SW will call again but with sw_backup set to true, meaning that the
HW should help or allow the SW to run the protocol.
For example when role is MRM, if the HW can't detect when it stops
receiving MRP Test frames but it can trap these frames to CPU, then it
needs to return -EOPNOTSUPP when sw_backup is false and return 0 when
sw_backup is true.
Signed-off-by: Horatiu Vultur <horatiu.vultur at microchip.com>
---
include/net/switchdev.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index 88fcac140966..3f236eaa4f3e 100644
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -132,6 +132,7 @@ struct switchdev_obj_ring_role_mrp {
struct switchdev_obj obj;
u8 ring_role;
u32 ring_id;
+ u8 sw_backup;
};
#define SWITCHDEV_OBJ_RING_ROLE_MRP(OBJ) \
@@ -166,6 +167,7 @@ struct switchdev_obj_in_role_mrp {
u32 ring_id;
u16 in_id;
u8 in_role;
+ u8 sw_backup;
};
#define SWITCHDEV_OBJ_IN_ROLE_MRP(OBJ) \
--
2.27.0
Horatiu Vultur
2021-Jan-23 16:18 UTC
[Bridge] [PATCH net-next 2/4] bridge: mrp: Add 'enum br_mrp_hw_support'
Add the enum br_mrp_hw_support that is used by the br_mrp_switchdev
functions to allow the SW to detect better the cases where the HW can't
implement this or when the SW is used as a backup.
Signed-off-by: Horatiu Vultur <horatiu.vultur at microchip.com>
---
net/bridge/br_private_mrp.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/net/bridge/br_private_mrp.h b/net/bridge/br_private_mrp.h
index 1883118aae55..31e666ae6955 100644
--- a/net/bridge/br_private_mrp.h
+++ b/net/bridge/br_private_mrp.h
@@ -46,6 +46,20 @@ struct br_mrp {
struct rcu_head rcu;
};
+/* This type is returned by br_mrp_switchdev functions that allow to have a SW
+ * backup in case the HW can't implement completely the protocol.
+ * BR_MRP_NONE - means the HW can't run at all the protocol, so the SW
stops
+ * configuring the node anymore.
+ * BR_MRP_SW - the HW can help the SW to run the protocol, by redirecting MRP
+ * frames to CPU.
+ * BR_MRP_HW - the HW can implement completely the protocol.
+ */
+enum br_mrp_hw_support {
+ BR_MRP_NONE,
+ BR_MRP_SW,
+ BR_MRP_HW,
+};
+
/* br_mrp.c */
int br_mrp_add(struct net_bridge *br, struct br_mrp_instance *instance);
int br_mrp_del(struct net_bridge *br, struct br_mrp_instance *instance);
--
2.27.0
Horatiu Vultur
2021-Jan-23 16:18 UTC
[Bridge] [PATCH net-next 3/4] bridge: mrp: Extend br_mrp_switchdev to detect better the errors
This patch extends the br_mrp_switchdev functions to be able to have a
better understanding what cause the issue and if the SW needs to be used
as a backup.
There are the following cases:
- when the code is compiled without CONFIG_NET_SWITCHDEV. In this case
return success so the SW can continue with the protocol. Depending on
the function it returns 0 or BR_MRP_SW.
- when code is compiled with CONFIG_NET_SWITCHDEV and the driver doesn't
implement any MRP callbacks, then the HW can't run MRP so it just
returns -EOPNOTSUPP. So the SW will stop further to configure the
node.
- when code is compiled with CONFIG_NET_SWITCHDEV and the driver fully
supports any MRP functionality then the SW doesn't need to do
anything. The functions will return 0 or BR_MRP_HW.
- when code is compiled with CONFIG_NET_SWITCHDEV and the HW can't run
completely the protocol but it can help the SW to run it. For
example, the HW can't support completely MRM role(can't detect when it
stops receiving MRP Test frames) but it can redirect these frames to
CPU. In this case it is possible to have a SW fallback. The SW will
try initially to call the driver with sw_backup set to false, meaning
that the HW can implement completely the role. If the driver returns
-EOPNOTSUPP, the SW will try again with sw_backup set to false,
meaning that the SW will detect when it stops receiving the frames. In
case the driver returns 0 then the SW will continue to configure the
node accordingly.
In this way is more clear when the SW needs to stop configuring the
node, or when the SW is used as a backup or the HW can implement the
functionality.
Signed-off-by: Horatiu Vultur <horatiu.vultur at microchip.com>
---
net/bridge/br_mrp_switchdev.c | 189 +++++++++++++++++++++++++---------
net/bridge/br_private_mrp.h | 24 +++--
2 files changed, 152 insertions(+), 61 deletions(-)
diff --git a/net/bridge/br_mrp_switchdev.c b/net/bridge/br_mrp_switchdev.c
index ed547e03ace1..e93a84532a4e 100644
--- a/net/bridge/br_mrp_switchdev.c
+++ b/net/bridge/br_mrp_switchdev.c
@@ -14,14 +14,12 @@ int br_mrp_switchdev_add(struct net_bridge *br, struct
br_mrp *mrp)
.ring_id = mrp->ring_id,
.prio = mrp->prio,
};
- int err;
-
- err = switchdev_port_obj_add(br->dev, &mrp_obj.obj, NULL);
- if (err && err != -EOPNOTSUPP)
- return err;
+ /* If switchdev is not enabled then just run in SW */
+ if (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return 0;
- return 0;
+ return switchdev_port_obj_add(br->dev, &mrp_obj.obj, NULL);
}
int br_mrp_switchdev_del(struct net_bridge *br, struct br_mrp *mrp)
@@ -33,40 +31,69 @@ int br_mrp_switchdev_del(struct net_bridge *br, struct
br_mrp *mrp)
.s_port = NULL,
.ring_id = mrp->ring_id,
};
- int err;
- err = switchdev_port_obj_del(br->dev, &mrp_obj.obj);
+ /* If switchdev is not enabled then just run in SW */
+ if (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return 0;
- if (err && err != -EOPNOTSUPP)
- return err;
-
- return 0;
+ return switchdev_port_obj_del(br->dev, &mrp_obj.obj);
}
-int br_mrp_switchdev_set_ring_role(struct net_bridge *br,
- struct br_mrp *mrp,
- enum br_mrp_ring_role_type role)
+enum br_mrp_hw_support
+br_mrp_switchdev_set_ring_role(struct net_bridge *br, struct br_mrp *mrp,
+ enum br_mrp_ring_role_type role)
{
struct switchdev_obj_ring_role_mrp mrp_role = {
.obj.orig_dev = br->dev,
.obj.id = SWITCHDEV_OBJ_ID_RING_ROLE_MRP,
.ring_role = role,
.ring_id = mrp->ring_id,
+ .sw_backup = false,
};
int err;
+ /* If switchdev is not enabled then just run in SW */
+ if (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return BR_MRP_SW;
+
+ /* First try to see if HW can implement comptletly the role in HW */
if (role == BR_MRP_RING_ROLE_DISABLED)
err = switchdev_port_obj_del(br->dev, &mrp_role.obj);
else
err = switchdev_port_obj_add(br->dev, &mrp_role.obj, NULL);
- return err;
+ /* In case of success then just return and notify the SW that doesn't
+ * need to do anything
+ */
+ if (!err)
+ return BR_MRP_HW;
+
+ /* There was some issue then is not possible at all to have this role so
+ * just return failire
+ */
+ if (err != -EOPNOTSUPP)
+ return BR_MRP_NONE;
+
+ /* In case the HW can't run complety in HW the protocol, we try again
+ * and this time to allow the SW to help, but the HW needs to redirect
+ * the frames to CPU.
+ */
+ mrp_role.sw_backup = true;
+ err = switchdev_port_obj_add(br->dev, &mrp_role.obj, NULL);
+
+ /* In case of success then notify the SW that it needs to help with the
+ * protocol
+ */
+ if (!err)
+ return BR_MRP_SW;
+
+ return BR_MRP_NONE;
}
-int br_mrp_switchdev_send_ring_test(struct net_bridge *br,
- struct br_mrp *mrp, u32 interval,
- u8 max_miss, u32 period,
- bool monitor)
+enum br_mrp_hw_support
+br_mrp_switchdev_send_ring_test(struct net_bridge *br, struct br_mrp *mrp,
+ u32 interval, u8 max_miss, u32 period,
+ bool monitor)
{
struct switchdev_obj_ring_test_mrp test = {
.obj.orig_dev = br->dev,
@@ -79,12 +106,29 @@ int br_mrp_switchdev_send_ring_test(struct net_bridge *br,
};
int err;
+ /* If switchdev is not enabled then just run in SW */
+ if (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return BR_MRP_SW;
+
if (interval == 0)
err = switchdev_port_obj_del(br->dev, &test.obj);
else
err = switchdev_port_obj_add(br->dev, &test.obj, NULL);
- return err;
+ /* If everything succeed then the HW can send this frames, so the SW
+ * doesn't need to generate them
+ */
+ if (!err)
+ return BR_MRP_HW;
+
+ /* There was an error when the HW was configured so the SW return
+ * failure
+ */
+ if (err != -EOPNOTSUPP)
+ return BR_MRP_NONE;
+
+ /* So the HW can't generate these frames so allow the SW to do that */
+ return BR_MRP_SW;
}
int br_mrp_switchdev_set_ring_state(struct net_bridge *br,
@@ -97,19 +141,18 @@ int br_mrp_switchdev_set_ring_state(struct net_bridge *br,
.ring_state = state,
.ring_id = mrp->ring_id,
};
- int err;
- err = switchdev_port_obj_add(br->dev, &mrp_state.obj, NULL);
+ /* If switchdev is not enabled then just run in SW */
+ if (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return 0;
- if (err && err != -EOPNOTSUPP)
- return err;
-
- return 0;
+ return switchdev_port_obj_add(br->dev, &mrp_state.obj, NULL);
}
-int br_mrp_switchdev_set_in_role(struct net_bridge *br, struct br_mrp *mrp,
- u16 in_id, u32 ring_id,
- enum br_mrp_in_role_type role)
+enum br_mrp_hw_support
+br_mrp_switchdev_set_in_role(struct net_bridge *br, struct br_mrp *mrp,
+ u16 in_id, u32 ring_id,
+ enum br_mrp_in_role_type role)
{
struct switchdev_obj_in_role_mrp mrp_role = {
.obj.orig_dev = br->dev,
@@ -118,15 +161,46 @@ int br_mrp_switchdev_set_in_role(struct net_bridge *br,
struct br_mrp *mrp,
.in_id = mrp->in_id,
.ring_id = mrp->ring_id,
.i_port = rtnl_dereference(mrp->i_port)->dev,
+ .sw_backup = false,
};
int err;
+ /* If switchdev is not enabled then just run in SW */
+ if (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return BR_MRP_SW;
+
+ /* First try to see if HW can implement comptletly the role in HW */
if (role == BR_MRP_IN_ROLE_DISABLED)
err = switchdev_port_obj_del(br->dev, &mrp_role.obj);
else
err = switchdev_port_obj_add(br->dev, &mrp_role.obj, NULL);
- return err;
+ /* In case of success then just return and notify the SW that doesn't
+ * need to do anything
+ */
+ if (!err)
+ return BR_MRP_HW;
+
+ /* There was some issue then is not possible at all to have this role so
+ * just return failire
+ */
+ if (err != -EOPNOTSUPP)
+ return BR_MRP_NONE;
+
+ /* In case the HW can't run complety in HW the protocol, we try again
+ * and this time to allow the SW to help, but the HW needs to redirect
+ * the frames to CPU.
+ */
+ mrp_role.sw_backup = true;
+ err = switchdev_port_obj_add(br->dev, &mrp_role.obj, NULL);
+
+ /* In case of success then notify the SW that it needs to help with the
+ * protocol
+ */
+ if (!err)
+ return BR_MRP_SW;
+
+ return BR_MRP_NONE;
}
int br_mrp_switchdev_set_in_state(struct net_bridge *br, struct br_mrp *mrp,
@@ -138,18 +212,17 @@ int br_mrp_switchdev_set_in_state(struct net_bridge *br,
struct br_mrp *mrp,
.in_state = state,
.in_id = mrp->in_id,
};
- int err;
- err = switchdev_port_obj_add(br->dev, &mrp_state.obj, NULL);
+ /* If switchdev is not enabled then just run in SW */
+ if (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return 0;
- if (err && err != -EOPNOTSUPP)
- return err;
-
- return 0;
+ return switchdev_port_obj_add(br->dev, &mrp_state.obj, NULL);
}
-int br_mrp_switchdev_send_in_test(struct net_bridge *br, struct br_mrp *mrp,
- u32 interval, u8 max_miss, u32 period)
+enum br_mrp_hw_support
+br_mrp_switchdev_send_in_test(struct net_bridge *br, struct br_mrp *mrp,
+ u32 interval, u8 max_miss, u32 period)
{
struct switchdev_obj_in_test_mrp test = {
.obj.orig_dev = br->dev,
@@ -161,12 +234,29 @@ int br_mrp_switchdev_send_in_test(struct net_bridge *br,
struct br_mrp *mrp,
};
int err;
+ /* If switchdev is not enabled then just run in SW */
+ if (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return BR_MRP_SW;
+
if (interval == 0)
err = switchdev_port_obj_del(br->dev, &test.obj);
else
err = switchdev_port_obj_add(br->dev, &test.obj, NULL);
- return err;
+ /* If everything succeed then the HW can send this frames, so the SW
+ * doesn't need to generate them
+ */
+ if (!err)
+ return BR_MRP_HW;
+
+ /* There was an error when the HW was configured so the SW return
+ * failure
+ */
+ if (err != -EOPNOTSUPP)
+ return BR_MRP_NONE;
+
+ /* So the HW can't generate these frames so allow the SW to do that */
+ return BR_MRP_SW;
}
int br_mrp_port_switchdev_set_state(struct net_bridge_port *p,
@@ -177,14 +267,12 @@ int br_mrp_port_switchdev_set_state(struct net_bridge_port
*p,
.id = SWITCHDEV_ATTR_ID_MRP_PORT_STATE,
.u.mrp_port_state = state,
};
- int err;
- err = switchdev_port_attr_set(p->dev, &attr);
- if (err && err != -EOPNOTSUPP)
- br_warn(p->br, "error setting offload MRP state on port
%u(%s)\n",
- (unsigned int)p->port_no, p->dev->name);
+ /* If switchdev is not enabled then just run in SW */
+ if (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return 0;
- return err;
+ return switchdev_port_attr_set(p->dev, &attr);
}
int br_mrp_port_switchdev_set_role(struct net_bridge_port *p,
@@ -195,11 +283,10 @@ int br_mrp_port_switchdev_set_role(struct net_bridge_port
*p,
.id = SWITCHDEV_ATTR_ID_MRP_PORT_ROLE,
.u.mrp_port_role = role,
};
- int err;
- err = switchdev_port_attr_set(p->dev, &attr);
- if (err && err != -EOPNOTSUPP)
- return err;
+ /* If switchdev is not enabled then just run in SW */
+ if (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return 0;
- return 0;
+ return switchdev_port_attr_set(p->dev, &attr);
}
diff --git a/net/bridge/br_private_mrp.h b/net/bridge/br_private_mrp.h
index 31e666ae6955..e941dad398cf 100644
--- a/net/bridge/br_private_mrp.h
+++ b/net/bridge/br_private_mrp.h
@@ -79,24 +79,28 @@ int br_mrp_start_in_test(struct net_bridge *br,
/* br_mrp_switchdev.c */
int br_mrp_switchdev_add(struct net_bridge *br, struct br_mrp *mrp);
int br_mrp_switchdev_del(struct net_bridge *br, struct br_mrp *mrp);
-int br_mrp_switchdev_set_ring_role(struct net_bridge *br, struct br_mrp *mrp,
- enum br_mrp_ring_role_type role);
+enum br_mrp_hw_support
+br_mrp_switchdev_set_ring_role(struct net_bridge *br, struct br_mrp *mrp,
+ enum br_mrp_ring_role_type role);
int br_mrp_switchdev_set_ring_state(struct net_bridge *br, struct br_mrp *mrp,
enum br_mrp_ring_state_type state);
-int br_mrp_switchdev_send_ring_test(struct net_bridge *br, struct br_mrp *mrp,
- u32 interval, u8 max_miss, u32 period,
- bool monitor);
+enum br_mrp_hw_support
+br_mrp_switchdev_send_ring_test(struct net_bridge *br, struct br_mrp *mrp,
+ u32 interval, u8 max_miss, u32 period,
+ bool monitor);
int br_mrp_port_switchdev_set_state(struct net_bridge_port *p,
enum br_mrp_port_state_type state);
int br_mrp_port_switchdev_set_role(struct net_bridge_port *p,
enum br_mrp_port_role_type role);
-int br_mrp_switchdev_set_in_role(struct net_bridge *br, struct br_mrp *mrp,
- u16 in_id, u32 ring_id,
- enum br_mrp_in_role_type role);
+enum br_mrp_hw_support
+br_mrp_switchdev_set_in_role(struct net_bridge *br, struct br_mrp *mrp,
+ u16 in_id, u32 ring_id,
+ enum br_mrp_in_role_type role);
int br_mrp_switchdev_set_in_state(struct net_bridge *br, struct br_mrp *mrp,
enum br_mrp_in_state_type state);
-int br_mrp_switchdev_send_in_test(struct net_bridge *br, struct br_mrp *mrp,
- u32 interval, u8 max_miss, u32 period);
+enum br_mrp_hw_support
+br_mrp_switchdev_send_in_test(struct net_bridge *br, struct br_mrp *mrp,
+ u32 interval, u8 max_miss, u32 period);
/* br_mrp_netlink.c */
int br_mrp_ring_port_open(struct net_device *dev, u8 loc);
--
2.27.0
Horatiu Vultur
2021-Jan-23 16:18 UTC
[Bridge] [PATCH net-next 4/4] bridge: mrp: Update br_mrp to use new return values of br_mrp_switchdev
Check the return values of the br_mrp_switchdev function.
In case of:
- BR_MRP_NONE, return the error to userspace,
- BR_MRP_SW, continue with SW implemtation
- BR_MRP_HW, continue without SW implemtation.
Signed-off-by: Horatiu Vultur <horatiu.vultur at microchip.com>
---
net/bridge/br_mrp.c | 43 +++++++++++++++++++++++++++----------------
1 file changed, 27 insertions(+), 16 deletions(-)
diff --git a/net/bridge/br_mrp.c b/net/bridge/br_mrp.c
index fc0a98874bfc..faa4ccb20f0a 100644
--- a/net/bridge/br_mrp.c
+++ b/net/bridge/br_mrp.c
@@ -636,7 +636,7 @@ int br_mrp_set_ring_role(struct net_bridge *br,
struct br_mrp_ring_role *role)
{
struct br_mrp *mrp = br_mrp_find_id(br, role->ring_id);
- int err;
+ enum br_mrp_hw_support support;
if (!mrp)
return -EINVAL;
@@ -644,9 +644,9 @@ int br_mrp_set_ring_role(struct net_bridge *br,
mrp->ring_role = role->ring_role;
/* If there is an error just bailed out */
- err = br_mrp_switchdev_set_ring_role(br, mrp, role->ring_role);
- if (err && err != -EOPNOTSUPP)
- return err;
+ support = br_mrp_switchdev_set_ring_role(br, mrp, role->ring_role);
+ if (support == BR_MRP_NONE)
+ return -EOPNOTSUPP;
/* Now detect if the HW actually applied the role or not. If the HW
* applied the role it means that the SW will not to do those operations
@@ -654,7 +654,7 @@ int br_mrp_set_ring_role(struct net_bridge *br,
* SW when ring is open, but if the is not pushed to the HW the SW will
* need to detect when the ring is open
*/
- mrp->ring_role_offloaded = err == -EOPNOTSUPP ? 0 : 1;
+ mrp->ring_role_offloaded = support == BR_MRP_SW ? 0 : 1;
return 0;
}
@@ -667,6 +667,7 @@ int br_mrp_start_test(struct net_bridge *br,
struct br_mrp_start_test *test)
{
struct br_mrp *mrp = br_mrp_find_id(br, test->ring_id);
+ enum br_mrp_hw_support support;
if (!mrp)
return -EINVAL;
@@ -674,9 +675,13 @@ int br_mrp_start_test(struct net_bridge *br,
/* Try to push it to the HW and if it fails then continue with SW
* implementation and if that also fails then return error.
*/
- if (!br_mrp_switchdev_send_ring_test(br, mrp, test->interval,
- test->max_miss, test->period,
- test->monitor))
+ support = br_mrp_switchdev_send_ring_test(br, mrp, test->interval,
+ test->max_miss, test->period,
+ test->monitor);
+ if (support == BR_MRP_NONE)
+ return -EOPNOTSUPP;
+
+ if (support == BR_MRP_HW)
return 0;
mrp->test_interval = test->interval;
@@ -718,8 +723,8 @@ int br_mrp_set_in_state(struct net_bridge *br, struct
br_mrp_in_state *state)
int br_mrp_set_in_role(struct net_bridge *br, struct br_mrp_in_role *role)
{
struct br_mrp *mrp = br_mrp_find_id(br, role->ring_id);
+ enum br_mrp_hw_support support;
struct net_bridge_port *p;
- int err;
if (!mrp)
return -EINVAL;
@@ -777,10 +782,10 @@ int br_mrp_set_in_role(struct net_bridge *br, struct
br_mrp_in_role *role)
mrp->in_id = role->in_id;
/* If there is an error just bailed out */
- err = br_mrp_switchdev_set_in_role(br, mrp, role->in_id,
- role->ring_id, role->in_role);
- if (err && err != -EOPNOTSUPP)
- return err;
+ support = br_mrp_switchdev_set_in_role(br, mrp, role->in_id,
+ role->ring_id, role->in_role);
+ if (support == BR_MRP_NONE)
+ return -EOPNOTSUPP;
/* Now detect if the HW actually applied the role or not. If the HW
* applied the role it means that the SW will not to do those operations
@@ -788,7 +793,7 @@ int br_mrp_set_in_role(struct net_bridge *br, struct
br_mrp_in_role *role)
* SW when interconnect ring is open, but if the is not pushed to the HW
* the SW will need to detect when the interconnect ring is open.
*/
- mrp->in_role_offloaded = err == -EOPNOTSUPP ? 0 : 1;
+ mrp->in_role_offloaded = support == BR_MRP_SW ? 0 : 1;
return 0;
}
@@ -801,6 +806,7 @@ int br_mrp_start_in_test(struct net_bridge *br,
struct br_mrp_start_in_test *in_test)
{
struct br_mrp *mrp = br_mrp_find_in_id(br, in_test->in_id);
+ enum br_mrp_hw_support support;
if (!mrp)
return -EINVAL;
@@ -811,8 +817,13 @@ int br_mrp_start_in_test(struct net_bridge *br,
/* Try to push it to the HW and if it fails then continue with SW
* implementation and if that also fails then return error.
*/
- if (!br_mrp_switchdev_send_in_test(br, mrp, in_test->interval,
- in_test->max_miss, in_test->period))
+ support = br_mrp_switchdev_send_in_test(br, mrp, in_test->interval,
+ in_test->max_miss,
+ in_test->period);
+ if (support == BR_MRP_NONE)
+ return -EOPNOTSUPP;
+
+ if (support == BR_MRP_HW)
return 0;
mrp->in_test_interval = in_test->interval;
--
2.27.0