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net/mlx5: DR, Add support for multiple destination table action

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A multiple destination table action allows HW packet duplication
to multiple destinations, this is useful for multicast or mirroring
traffic for debug. Duplicating is done using a FW flow table with
multiple destinations.

The new action creation function, mlx5dr_action_create_mult_dest_tbl
will allow creating a single table to iterate over several dr actions.

Signed-off-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Alex Vesker 2019-12-15 21:27:54 +02:00 committed by Saeed Mahameed
parent aec292ee6f
commit b8853c969f
3 changed files with 132 additions and 0 deletions
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114
drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c
View File

@ -981,6 +981,104 @@ mlx5dr_action_create_dest_table(struct mlx5dr_table *tbl)
return NULL;
}
struct mlx5dr_action *
mlx5dr_action_create_mult_dest_tbl(struct mlx5dr_domain *dmn,
struct mlx5dr_action_dest *dests,
u32 num_of_dests)
{
struct mlx5dr_cmd_flow_destination_hw_info *hw_dests;
struct mlx5dr_action **ref_actions;
struct mlx5dr_action *action;
bool reformat_req = false;
u32 num_of_ref = 0;
int ret;
int i;
if (dmn->type != MLX5DR_DOMAIN_TYPE_FDB) {
mlx5dr_err(dmn, "Multiple destination support is for FDB only\n");
return NULL;
}
hw_dests = kzalloc(sizeof(*hw_dests) * num_of_dests, GFP_KERNEL);
if (!hw_dests)
return NULL;
ref_actions = kzalloc(sizeof(*ref_actions) * num_of_dests * 2, GFP_KERNEL);
if (!ref_actions)
goto free_hw_dests;
for (i = 0; i < num_of_dests; i++) {
struct mlx5dr_action *reformat_action = dests[i].reformat;
struct mlx5dr_action *dest_action = dests[i].dest;
ref_actions[num_of_ref++] = dest_action;
switch (dest_action->action_type) {
case DR_ACTION_TYP_VPORT:
hw_dests[i].vport.flags = MLX5_FLOW_DEST_VPORT_VHCA_ID;
hw_dests[i].type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
hw_dests[i].vport.num = dest_action->vport.caps->num;
hw_dests[i].vport.vhca_id = dest_action->vport.caps->vhca_gvmi;
if (reformat_action) {
reformat_req = true;
hw_dests[i].vport.reformat_id =
reformat_action->reformat.reformat_id;
ref_actions[num_of_ref++] = reformat_action;
hw_dests[i].vport.flags |= MLX5_FLOW_DEST_VPORT_REFORMAT_ID;
}
break;
case DR_ACTION_TYP_FT:
hw_dests[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
if (dest_action->dest_tbl.is_fw_tbl)
hw_dests[i].ft_id = dest_action->dest_tbl.fw_tbl.id;
else
hw_dests[i].ft_id = dest_action->dest_tbl.tbl->table_id;
break;
default:
mlx5dr_dbg(dmn, "Invalid multiple destinations action\n");
goto free_ref_actions;
}
}
action = dr_action_create_generic(DR_ACTION_TYP_FT);
if (!action)
goto free_ref_actions;
ret = mlx5dr_fw_create_md_tbl(dmn,
hw_dests,
num_of_dests,
reformat_req,
&action->dest_tbl.fw_tbl.id,
&action->dest_tbl.fw_tbl.group_id);
if (ret)
goto free_action;
refcount_inc(&dmn->refcount);
for (i = 0; i < num_of_ref; i++)
refcount_inc(&ref_actions[i]->refcount);
action->dest_tbl.is_fw_tbl = true;
action->dest_tbl.fw_tbl.dmn = dmn;
action->dest_tbl.fw_tbl.type = FS_FT_FDB;
action->dest_tbl.fw_tbl.ref_actions = ref_actions;
action->dest_tbl.fw_tbl.num_of_ref_actions = num_of_ref;
kfree(hw_dests);
return action;
free_action:
kfree(action);
free_ref_actions:
kfree(ref_actions);
free_hw_dests:
kfree(hw_dests);
return NULL;
}
struct mlx5dr_action *
mlx5dr_action_create_dest_flow_fw_table(struct mlx5dr_domain *dmn,
struct mlx5_flow_table *ft)
@ -1566,6 +1664,22 @@ int mlx5dr_action_destroy(struct mlx5dr_action *action)
refcount_dec(&action->dest_tbl.fw_tbl.dmn->refcount);
else
refcount_dec(&action->dest_tbl.tbl->refcount);
if (action->dest_tbl.is_fw_tbl &&
action->dest_tbl.fw_tbl.num_of_ref_actions) {
struct mlx5dr_action **ref_actions;
int i;
ref_actions = action->dest_tbl.fw_tbl.ref_actions;
for (i = 0; i < action->dest_tbl.fw_tbl.num_of_ref_actions; i++)
refcount_dec(&ref_actions[i]->refcount);
kfree(ref_actions);
mlx5dr_fw_destroy_md_tbl(action->dest_tbl.fw_tbl.dmn,
action->dest_tbl.fw_tbl.id,
action->dest_tbl.fw_tbl.group_id);
}
break;
case DR_ACTION_TYP_TNL_L2_TO_L2:
refcount_dec(&action->reformat.dmn->refcount);

3
drivers/net/ethernet/mellanox/mlx5/core/steering/dr_types.h
View File

@ -745,9 +745,12 @@ struct mlx5dr_action {
struct {
struct mlx5dr_domain *dmn;
u32 id;
u32 group_id;
enum fs_flow_table_type type;
u64 rx_icm_addr;
u64 tx_icm_addr;
struct mlx5dr_action **ref_actions;
u32 num_of_ref_actions;
} fw_tbl;
};
} dest_tbl;

15
drivers/net/ethernet/mellanox/mlx5/core/steering/mlx5dr.h
View File

@ -33,6 +33,11 @@ struct mlx5dr_match_parameters {
u64 *match_buf; /* Device spec format */
};
struct mlx5dr_action_dest {
struct mlx5dr_action *dest;
struct mlx5dr_action *reformat;
};
#ifdef CONFIG_MLX5_SW_STEERING
struct mlx5dr_domain *
@ -83,6 +88,11 @@ mlx5dr_action_create_dest_vport(struct mlx5dr_domain *domain,
u32 vport, u8 vhca_id_valid,
u16 vhca_id);
struct mlx5dr_action *
mlx5dr_action_create_mult_dest_tbl(struct mlx5dr_domain *dmn,
struct mlx5dr_action_dest *dests,
u32 num_of_dests);
struct mlx5dr_action *mlx5dr_action_create_drop(void);
struct mlx5dr_action *mlx5dr_action_create_tag(u32 tag_value);
@ -173,6 +183,11 @@ mlx5dr_action_create_dest_vport(struct mlx5dr_domain *domain,
u32 vport, u8 vhca_id_valid,
u16 vhca_id) { return NULL; }
static inline struct mlx5dr_action *
mlx5dr_action_create_mult_dest_tbl(struct mlx5dr_domain *dmn,
struct mlx5dr_action_dest *dests,
u32 num_of_dests) { return NULL; }
static inline struct mlx5dr_action *
mlx5dr_action_create_drop(void) { return NULL; }