iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net/mlx5: fs, add match on ranges API

Browse Source 
Range is a new flow destination type which allows matching on
a range of values instead of matching on a specific value.

Range flow destination has the following fields:
 - hit_ft: flow table to forward the traffic in case of hit
 - miss_ft: flow table to forward the traffic in case of miss
 - field: which packet characteristic to match on
 - min: minimal value for the selected field
 - max: maximal value for the selected field

Note:
 - In order to match, the value in the packet should meet
   the following criteria: min <= value < max
 - Currently, the only supported field type is L2 packet length

Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Alex Vesker <valex@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Yevgeny Kliteynik 2022-08-15 12:45:28 +03:00 committed by Saeed Mahameed
parent f1543c7aba
commit 38bf24c38d
4 changed files with 38 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/net/ethernet/mellanox/mlx5/core/diag/fs_tracepoint.c
View File

@ -228,6 +228,17 @@ const char *parse_fs_hdrs(struct trace_seq *p,
return ret;
}
static const char
*fs_dest_range_field_to_str(enum mlx5_flow_dest_range_field field)
{
switch (field) {
case MLX5_FLOW_DEST_RANGE_FIELD_PKT_LEN:
return "packet len";
default:
return "unknown dest range field";
}
}
const char *parse_fs_dst(struct trace_seq *p,
const struct mlx5_flow_destination *dst,
u32 counter_id)
@ -259,6 +270,11 @@ const char *parse_fs_dst(struct trace_seq *p,
case MLX5_FLOW_DESTINATION_TYPE_PORT:
trace_seq_printf(p, "port\n");
break;
case MLX5_FLOW_DESTINATION_TYPE_RANGE:
trace_seq_printf(p, "field=%s min=%d max=%d\n",
fs_dest_range_field_to_str(dst->range.field),
dst->range.min, dst->range.max);
break;
case MLX5_FLOW_DESTINATION_TYPE_NONE:
trace_seq_printf(p, "none\n");
break;

11
drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
View File

@ -448,7 +448,8 @@ static bool is_fwd_dest_type(enum mlx5_flow_destination_type type)
type == MLX5_FLOW_DESTINATION_TYPE_UPLINK ||
type == MLX5_FLOW_DESTINATION_TYPE_VPORT ||
type == MLX5_FLOW_DESTINATION_TYPE_FLOW_SAMPLER ||
type == MLX5_FLOW_DESTINATION_TYPE_TIR;
type == MLX5_FLOW_DESTINATION_TYPE_TIR ||
type == MLX5_FLOW_DESTINATION_TYPE_RANGE;
}
static bool check_valid_spec(const struct mlx5_flow_spec *spec)
@ -1578,7 +1579,13 @@ static bool mlx5_flow_dests_cmp(struct mlx5_flow_destination *d1,
(d1->type == MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE_NUM &&
d1->ft_num == d2->ft_num) ||
(d1->type == MLX5_FLOW_DESTINATION_TYPE_FLOW_SAMPLER &&
d1->sampler_id == d2->sampler_id))
d1->sampler_id == d2->sampler_id) ||
(d1->type == MLX5_FLOW_DESTINATION_TYPE_RANGE &&
d1->range.field == d2->range.field &&
d1->range.hit_ft == d2->range.hit_ft &&
d1->range.miss_ft == d2->range.miss_ft &&
d1->range.min == d2->range.min &&
d1->range.max == d2->range.max))
return true;
}

1
drivers/net/ethernet/mellanox/mlx5/core/fs_core.h
View File

@ -123,6 +123,7 @@ enum mlx5_flow_steering_mode {
enum mlx5_flow_steering_capabilty {
MLX5_FLOW_STEERING_CAP_VLAN_PUSH_ON_RX = 1UL << 0,
MLX5_FLOW_STEERING_CAP_VLAN_POP_ON_TX = 1UL << 1,
MLX5_FLOW_STEERING_CAP_MATCH_RANGES = 1UL << 2,
};
struct mlx5_flow_steering {

12
include/linux/mlx5/fs.h
View File

@ -50,6 +50,7 @@ enum mlx5_flow_destination_type {
MLX5_FLOW_DESTINATION_TYPE_PORT,
MLX5_FLOW_DESTINATION_TYPE_COUNTER,
MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE_NUM,
MLX5_FLOW_DESTINATION_TYPE_RANGE,
};
enum {
@ -143,6 +144,10 @@ enum {
MLX5_FLOW_DEST_VPORT_REFORMAT_ID = BIT(1),
};
enum mlx5_flow_dest_range_field {
MLX5_FLOW_DEST_RANGE_FIELD_PKT_LEN = 0,
};
struct mlx5_flow_destination {
enum mlx5_flow_destination_type type;
union {
@ -156,6 +161,13 @@ struct mlx5_flow_destination {
struct mlx5_pkt_reformat *pkt_reformat;
u8 flags;
} vport;
struct {
struct mlx5_flow_table *hit_ft;
struct mlx5_flow_table *miss_ft;
enum mlx5_flow_dest_range_field field;
u32 min;
u32 max;
} range;
u32 sampler_id;
};
};