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Commit 483a3966 authored by Slava Shwartsman's avatar Slava Shwartsman Committed by Doug Ledford
Browse files

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: default avatarSlava Shwartsman <slavash@mellanox.com>
Reviewed-by: default avatarMaor Gottlieb <maorg@mellanox.com>
Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 19cc7524

drivers/infiniband/core/uverbs.h

+1 −0
Original line number Diff line number Diff line
@@ -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;

	};

};

drivers/infiniband/core/uverbs_cmd.c

+7 −0
Original line number Diff line number Diff line
@@ -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;

	}

include/rdma/ib_verbs.h

+7 −0
Original line number Diff line number Diff line
@@ -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 {

include/uapi/rdma/ib_user_verbs.h

+11 −0
Original line number Diff line number Diff line
@@ -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;

};