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mlxsw: spectrum: Add support in matchall mirror TC offloading

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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>
This commit is contained in:
Yotam Gigi
2016-07-21 12:03:17 +02:00
committed by David S. Miller
parent 56a20680f7
commit 763b4b70af
2 changed files with 507 additions and 1 deletions
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464
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
View File

File diff suppressed because it is too large Load Diff

44
drivers/net/ethernet/mellanox/mlxsw/spectrum.h
View File

@@ -214,6 +214,43 @@ struct mlxsw_sp_vr {
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 mlxsw_sp {
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 @@ struct mlxsw_sp_port {
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);