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IB/core: Introduce drop flow specification 

This flow steering specification identifies flow for drop by the HW.
If user create a flow only with the drop specification,
then all the packets that hit this flow will be dropped, otherwise the HW
will drop only the packets that match the other L2/L3/L4 specifications.

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>
zero-colors
Slava Shwartsman 2017-04-03 13:13:51 +03:00 committed by Doug Ledford
parent 19cc75249a
commit 483a3966b5
4 changed files with 26 additions and 0 deletions
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1
drivers/infiniband/core/uverbs.h
View File

@ -233,6 +233,7 @@ struct ib_uverbs_flow_spec {
struct ib_uverbs_flow_spec_tcp_udp tcp_udp;
struct ib_uverbs_flow_spec_ipv6 ipv6;
struct ib_uverbs_flow_spec_action_tag flow_tag;
struct ib_uverbs_flow_spec_action_drop drop;
};
};

7
drivers/infiniband/core/uverbs_cmd.c
View File

@ -2689,6 +2689,13 @@ static int kern_spec_to_ib_spec_action(struct ib_uverbs_flow_spec *kern_spec,
ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag);
ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id;
break;
case IB_FLOW_SPEC_ACTION_DROP:
if (kern_spec->drop.size !=
sizeof(struct ib_uverbs_flow_spec_action_drop))
return -EINVAL;
ib_spec->drop.size = sizeof(struct ib_flow_spec_action_drop);
break;
default:
return -EINVAL;
}

7
include/rdma/ib_verbs.h
View File

@ -1679,6 +1679,7 @@ enum ib_flow_spec_type {
IB_FLOW_SPEC_INNER = 0x100,
/* Actions */
IB_FLOW_SPEC_ACTION_TAG = 0x1000,
IB_FLOW_SPEC_ACTION_DROP = 0x1001,
};
#define IB_FLOW_SPEC_LAYER_MASK 0xF0
#define IB_FLOW_SPEC_SUPPORT_LAYERS 8
@ -1807,6 +1808,11 @@ struct ib_flow_spec_action_tag {
u32 tag_id;
};
struct ib_flow_spec_action_drop {
enum ib_flow_spec_type type;
u16 size;
};
union ib_flow_spec {
struct {
u32 type;
@ -1819,6 +1825,7 @@ union ib_flow_spec {
struct ib_flow_spec_ipv6 ipv6;
struct ib_flow_spec_tunnel tunnel;
struct ib_flow_spec_action_tag flow_tag;
struct ib_flow_spec_action_drop drop;
};
struct ib_flow_attr {

11
include/uapi/rdma/ib_user_verbs.h
View File

@ -947,6 +947,17 @@ struct ib_uverbs_flow_spec_action_tag {
__u32 reserved1;
};
struct ib_uverbs_flow_spec_action_drop {
union {
struct ib_uverbs_flow_spec_hdr hdr;
struct {
__u32 type;
__u16 size;
__u16 reserved;
};
};
};
struct ib_uverbs_flow_tunnel_filter {
__be32 tunnel_id;
};