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-rw-r--r--net/bridge/br_mrp_switchdev.c171
-rw-r--r--net/bridge/br_private_mrp.h24
2 files changed, 118 insertions, 77 deletions
diff --git a/net/bridge/br_mrp_switchdev.c b/net/bridge/br_mrp_switchdev.c
index 3c9a4abcf4ee..cb54b324fa8c 100644
--- a/net/bridge/br_mrp_switchdev.c
+++ b/net/bridge/br_mrp_switchdev.c
@@ -4,6 +4,30 @@
#include "br_private_mrp.h"
+static enum br_mrp_hw_support
+br_mrp_switchdev_port_obj(struct net_bridge *br,
+ const struct switchdev_obj *obj, bool add)
+{
+ int err;
+
+ if (add)
+ err = switchdev_port_obj_add(br->dev, obj, NULL);
+ else
+ err = switchdev_port_obj_del(br->dev, obj);
+
+ /* In case of success just return and notify the SW that doesn't need
+ * to do anything
+ */
+ if (!err)
+ return BR_MRP_HW;
+
+ if (err != -EOPNOTSUPP)
+ return BR_MRP_NONE;
+
+ /* Continue with SW backup */
+ return BR_MRP_SW;
+}
+
int br_mrp_switchdev_add(struct net_bridge *br, struct br_mrp *mrp)
{
struct switchdev_obj_mrp mrp_obj = {
@@ -14,14 +38,11 @@ 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 (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return 0;
- if (err && err != -EOPNOTSUPP)
- return err;
-
- 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 +54,54 @@ 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 (err && err != -EOPNOTSUPP)
- return err;
+ if (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return 0;
- 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,
};
+ enum br_mrp_hw_support support;
int err;
- if (role == BR_MRP_RING_ROLE_DISABLED)
- err = switchdev_port_obj_del(br->dev, &mrp_role.obj);
- else
+ if (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return BR_MRP_SW;
+
+ support = br_mrp_switchdev_port_obj(br, &mrp_role.obj,
+ role != BR_MRP_RING_ROLE_DISABLED);
+ if (support != BR_MRP_SW)
+ return support;
+
+ /* If the driver can't configure to run completely the protocol in HW,
+ * then try again to configure the HW so the SW can run the protocol.
+ */
+ mrp_role.sw_backup = true;
+ if (role != BR_MRP_RING_ROLE_DISABLED)
err = switchdev_port_obj_add(br->dev, &mrp_role.obj, NULL);
+ else
+ err = switchdev_port_obj_del(br->dev, &mrp_role.obj);
- return err;
+ 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,
@@ -77,14 +112,11 @@ int br_mrp_switchdev_send_ring_test(struct net_bridge *br,
.period = period,
.monitor = monitor,
};
- int err;
- if (interval == 0)
- err = switchdev_port_obj_del(br->dev, &test.obj);
- else
- err = switchdev_port_obj_add(br->dev, &test.obj, NULL);
+ if (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return BR_MRP_SW;
- return err;
+ return br_mrp_switchdev_port_obj(br, &test.obj, interval != 0);
}
int br_mrp_switchdev_set_ring_state(struct net_bridge *br,
@@ -97,19 +129,17 @@ 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 (err && err != -EOPNOTSUPP)
- return err;
+ if (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return 0;
- 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 +148,32 @@ 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,
};
+ enum br_mrp_hw_support support;
int err;
- if (role == BR_MRP_IN_ROLE_DISABLED)
- err = switchdev_port_obj_del(br->dev, &mrp_role.obj);
- else
+ if (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return BR_MRP_SW;
+
+ support = br_mrp_switchdev_port_obj(br, &mrp_role.obj,
+ role != BR_MRP_IN_ROLE_DISABLED);
+ if (support != BR_MRP_NONE)
+ return support;
+
+ /* If the driver can't configure to run completely the protocol in HW,
+ * then try again to configure the HW so the SW can run the protocol.
+ */
+ mrp_role.sw_backup = true;
+ if (role != BR_MRP_IN_ROLE_DISABLED)
err = switchdev_port_obj_add(br->dev, &mrp_role.obj, NULL);
+ else
+ err = switchdev_port_obj_del(br->dev, &mrp_role.obj);
+
+ if (!err)
+ return BR_MRP_SW;
- return err;
+ return BR_MRP_NONE;
}
int br_mrp_switchdev_set_in_state(struct net_bridge *br, struct br_mrp *mrp,
@@ -138,18 +185,16 @@ 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 (err && err != -EOPNOTSUPP)
- return err;
+ if (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return 0;
- 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,
@@ -159,14 +204,11 @@ int br_mrp_switchdev_send_in_test(struct net_bridge *br, struct br_mrp *mrp,
.in_id = mrp->in_id,
.period = period,
};
- int err;
- if (interval == 0)
- err = switchdev_port_obj_del(br->dev, &test.obj);
- else
- err = switchdev_port_obj_add(br->dev, &test.obj, NULL);
+ if (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return BR_MRP_SW;
- return err;
+ return br_mrp_switchdev_port_obj(br, &test.obj, interval != 0);
}
int br_mrp_port_switchdev_set_state(struct net_bridge_port *p, u32 state)
@@ -176,14 +218,11 @@ int br_mrp_port_switchdev_set_state(struct net_bridge_port *p, u32 state)
.id = SWITCHDEV_ATTR_ID_PORT_STP_STATE,
.u.stp_state = state,
};
- int err;
- err = switchdev_port_attr_set(p->dev, &attr, NULL);
- 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 (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return 0;
- return err;
+ return switchdev_port_attr_set(p->dev, &attr, NULL);
}
int br_mrp_port_switchdev_set_role(struct net_bridge_port *p,
@@ -194,11 +233,9 @@ 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, NULL);
- if (err && err != -EOPNOTSUPP)
- return err;
+ if (!IS_ENABLED(CONFIG_NET_SWITCHDEV))
+ return 0;
- return 0;
+ return switchdev_port_attr_set(p->dev, &attr, NULL);
}
diff --git a/net/bridge/br_private_mrp.h b/net/bridge/br_private_mrp.h
index 966444304c38..9559aa2750fb 100644
--- a/net/bridge/br_private_mrp.h
+++ b/net/bridge/br_private_mrp.h
@@ -79,23 +79,27 @@ 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, u32 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);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.