hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

IB/mlx5: Add drop flow steering rule support 

A drop rule is described by an action drop and no destination.
If a user specified IB_FLOW_SPEC_ACTION_DROP then set the action
to MLX5_FLOW_CONTEXT_ACTION_DROP and clear the destination.

Signed-off-by: Slava Shwartsman <slavash@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Slava Shwartsman 2017-04-03 13:13:52 +03:00 committed by Doug Ledford
parent 483a3966b5
commit a22ed86cff
1 changed files with 22 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
drivers/infiniband/hw/mlx5/main.c
View File

@ -1727,6 +1727,7 @@ static void set_tos(void *outer_c, void *outer_v, u8 mask, u8 val)
#define LAST_TCP_UDP_FIELD src_port
#define LAST_TUNNEL_FIELD tunnel_id
#define LAST_FLOW_TAG_FIELD tag_id
#define LAST_DROP_FIELD size
/* Field is the last supported field */
#define FIELDS_NOT_SUPPORTED(filter, field)\
@ -1740,7 +1741,7 @@ static void set_tos(void *outer_c, void *outer_v, u8 mask, u8 val)
#define IPV6_VERSION 6
static int parse_flow_attr(struct mlx5_core_dev *mdev, u32 *match_c,
u32 *match_v, const union ib_flow_spec *ib_spec,
u32 *tag_id)
u32 *tag_id, bool *is_drop)
{
void *misc_params_c = MLX5_ADDR_OF(fte_match_param, match_c,
misc_parameters);
@ -1960,6 +1961,12 @@ static int parse_flow_attr(struct mlx5_core_dev *mdev, u32 *match_c,
*tag_id = ib_spec->flow_tag.tag_id;
break;
case IB_FLOW_SPEC_ACTION_DROP:
if (FIELDS_NOT_SUPPORTED(ib_spec->drop,
LAST_DROP_FIELD))
return -EOPNOTSUPP;
*is_drop = true;
break;
default:
return -EINVAL;
}
@ -2181,10 +2188,13 @@ static struct mlx5_ib_flow_handler *create_flow_rule(struct mlx5_ib_dev *dev,
struct mlx5_ib_flow_handler *handler;
struct mlx5_flow_act flow_act = {0};
struct mlx5_flow_spec *spec;
struct mlx5_flow_destination *rule_dst = dst;
const void *ib_flow = (const void *)flow_attr + sizeof(*flow_attr);
unsigned int spec_index;
u32 flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
bool is_drop = false;
int err = 0;
int dest_num = 1;
if (!is_valid_attr(dev->mdev, flow_attr))
return ERR_PTR(-EINVAL);
@ -2200,7 +2210,8 @@ static struct mlx5_ib_flow_handler *create_flow_rule(struct mlx5_ib_dev *dev,
for (spec_index = 0; spec_index < flow_attr->num_of_specs; spec_index++) {
err = parse_flow_attr(dev->mdev, spec->match_criteria,
spec->match_value, ib_flow, &flow_tag);
spec->match_value,
ib_flow, &flow_tag, &is_drop);
if (err < 0)
goto free;
@ -2208,8 +2219,14 @@ static struct mlx5_ib_flow_handler *create_flow_rule(struct mlx5_ib_dev *dev,
}
spec->match_criteria_enable = get_match_criteria_enable(spec->match_criteria);
flow_act.action = dst ? MLX5_FLOW_CONTEXT_ACTION_FWD_DEST :
MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO;
if (is_drop) {
flow_act.action = MLX5_FLOW_CONTEXT_ACTION_DROP;
rule_dst = NULL;
dest_num = 0;
} else {
flow_act.action = dst ? MLX5_FLOW_CONTEXT_ACTION_FWD_DEST :
MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO;
}
if (flow_tag != MLX5_FS_DEFAULT_FLOW_TAG &&
(flow_attr->type == IB_FLOW_ATTR_ALL_DEFAULT ||
@ -2222,7 +2239,7 @@ static struct mlx5_ib_flow_handler *create_flow_rule(struct mlx5_ib_dev *dev,
flow_act.flow_tag = flow_tag;
handler->rule = mlx5_add_flow_rules(ft, spec,
&flow_act,
dst, 1);
rule_dst, dest_num);
if (IS_ERR(handler->rule)) {
err = PTR_ERR(handler->rule);