mlxsw: spectrum: Add support in matchall mirror TC offloading
This patch offloads port mirroring directives to hw using the matchall TC
with action mirror. It includes both the implementation of the
ndo_setup_tc function for the spectrum driver and the spectrum hardware
offload configuration code.
The hardware offload code is basically two new functions which are capable
of adding and removing a new mirror ports pair. It is done using the MPAT,
MPAR and SBIB registers:
- A new Switch-Port Analyzer (SPAN) entry is added using MPAT to the 'to'
port.
- The 'to' port is bound to the SPAN entry using MPAR register.
- In case of egress SPAN, the 'to' port gets a new internal shared
buffer using SBIB register.
In addition, a new database was added to the mlxsw_sp struct to store all
the SPAN entries and their bound ports list. The number of supported SPAN
entries is determined by resource query.
Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index ef4ac89..f69aa37 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -214,6 +214,43 @@
struct mlxsw_sp_fib *fib;
};
+enum mlxsw_sp_span_type {
+ MLXSW_SP_SPAN_EGRESS,
+ MLXSW_SP_SPAN_INGRESS
+};
+
+struct mlxsw_sp_span_inspected_port {
+ struct list_head list;
+ enum mlxsw_sp_span_type type;
+ u8 local_port;
+};
+
+struct mlxsw_sp_span_entry {
+ u8 local_port;
+ bool used;
+ struct list_head bound_ports_list;
+ int ref_count;
+ int id;
+};
+
+enum mlxsw_sp_port_mall_action_type {
+ MLXSW_SP_PORT_MALL_MIRROR,
+};
+
+struct mlxsw_sp_port_mall_mirror_tc_entry {
+ u8 to_local_port;
+ bool ingress;
+};
+
+struct mlxsw_sp_port_mall_tc_entry {
+ struct list_head list;
+ unsigned long cookie;
+ enum mlxsw_sp_port_mall_action_type type;
+ union {
+ struct mlxsw_sp_port_mall_mirror_tc_entry mirror;
+ };
+};
+
struct mlxsw_sp_router {
struct mlxsw_sp_lpm_tree lpm_trees[MLXSW_SP_LPM_TREE_COUNT];
struct mlxsw_sp_vr vrs[MLXSW_SP_VIRTUAL_ROUTER_MAX];
@@ -260,6 +297,11 @@
struct {
DECLARE_BITMAP(usage, MLXSW_SP_KVD_LINEAR_SIZE);
} kvdl;
+
+ struct {
+ struct mlxsw_sp_span_entry *entries;
+ int entries_count;
+ } span;
};
static inline struct mlxsw_sp_upper *
@@ -316,6 +358,8 @@
unsigned long *untagged_vlans;
/* VLAN interfaces */
struct list_head vports_list;
+ /* TC handles */
+ struct list_head mall_tc_list;
};
struct mlxsw_sp_port *mlxsw_sp_port_lower_dev_hold(struct net_device *dev);