devlink: add shared buffer configuration
Define userspace API and drivers API for configuration of shared
buffers. Four basic objects are defined:
shared buffer - attributes are size, number of pools and TCs
pool - chunk of sharedbuffer definition, it has some size and either
static or dynamic threshold
port pool threshold - to set per-port threshold for each pool
port tc threshold bind - to bind port and TC to specified pool
with threshold.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/devlink.h b/include/net/devlink.h
index c37d257..e4c2747 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -24,6 +24,7 @@
struct devlink {
struct list_head list;
struct list_head port_list;
+ struct list_head sb_list;
const struct devlink_ops *ops;
struct device *dev;
possible_net_t _net;
@@ -42,6 +43,12 @@
u32 split_group;
};
+struct devlink_sb_pool_info {
+ enum devlink_sb_pool_type pool_type;
+ u32 size;
+ enum devlink_sb_threshold_type threshold_type;
+};
+
struct devlink_ops {
size_t priv_size;
int (*port_type_set)(struct devlink_port *devlink_port,
@@ -49,6 +56,28 @@
int (*port_split)(struct devlink *devlink, unsigned int port_index,
unsigned int count);
int (*port_unsplit)(struct devlink *devlink, unsigned int port_index);
+ int (*sb_pool_get)(struct devlink *devlink, unsigned int sb_index,
+ u16 pool_index,
+ struct devlink_sb_pool_info *pool_info);
+ int (*sb_pool_set)(struct devlink *devlink, unsigned int sb_index,
+ u16 pool_index, u32 size,
+ enum devlink_sb_threshold_type threshold_type);
+ int (*sb_port_pool_get)(struct devlink_port *devlink_port,
+ unsigned int sb_index, u16 pool_index,
+ u32 *p_threshold);
+ int (*sb_port_pool_set)(struct devlink_port *devlink_port,
+ unsigned int sb_index, u16 pool_index,
+ u32 threshold);
+ int (*sb_tc_pool_bind_get)(struct devlink_port *devlink_port,
+ unsigned int sb_index,
+ u16 tc_index,
+ enum devlink_sb_pool_type pool_type,
+ u16 *p_pool_index, u32 *p_threshold);
+ int (*sb_tc_pool_bind_set)(struct devlink_port *devlink_port,
+ unsigned int sb_index,
+ u16 tc_index,
+ enum devlink_sb_pool_type pool_type,
+ u16 pool_index, u32 threshold);
};
static inline void *devlink_priv(struct devlink *devlink)
@@ -82,6 +111,11 @@
void devlink_port_type_clear(struct devlink_port *devlink_port);
void devlink_port_split_set(struct devlink_port *devlink_port,
u32 split_group);
+int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
+ u32 size, u16 ingress_pools_count,
+ u16 egress_pools_count, u16 ingress_tc_count,
+ u16 egress_tc_count);
+void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index);
#else
@@ -135,6 +169,19 @@
{
}
+static inline int devlink_sb_register(struct devlink *devlink,
+ unsigned int sb_index, u32 size,
+ u16 ingress_pools_count,
+ u16 egress_pools_count, u16 tc_count)
+{
+ return 0;
+}
+
+static inline void devlink_sb_unregister(struct devlink *devlink,
+ unsigned int sb_index)
+{
+}
+
#endif
#endif /* _NET_DEVLINK_H_ */