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Commit 528e5a1b authored by Bodong Wang's avatar Bodong Wang Committed by Doug Ledford
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IB/core: Support rate limit for packet pacing 



Add new member rate_limit to ib_qp_attr which holds the packet pacing rate
in kbps, 0 means unlimited.

IB_QP_RATE_LIMIT is added to ib_attr_mask and could be used by RAW
QPs when changing QP state from RTR to RTS, RTS to RTS.

Signed-off-by: default avatarBodong Wang <bodong@mellanox.com>
Reviewed-by: default avatarMatan Barak <matanb@mellanox.com>
Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent d949167d

drivers/infiniband/core/verbs.c

+2 −0
Original line number Diff line number Diff line
@@ -1016,6 +1016,7 @@ static const struct { 
						 IB_QP_QKEY),

				 [IB_QPT_GSI] = (IB_QP_CUR_STATE		|

						 IB_QP_QKEY),

				 [IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT,

			 }

		}

	},
@@ -1049,6 +1050,7 @@ static const struct { 
						IB_QP_QKEY),

				[IB_QPT_GSI] = (IB_QP_CUR_STATE			|

						IB_QP_QKEY),

				[IB_QPT_RAW_PACKET] = IB_QP_RATE_LIMIT,

			}

		},

		[IB_QPS_SQD]   = {

include/rdma/ib_verbs.h

+2 −0
Original line number Diff line number Diff line
@@ -1102,6 +1102,7 @@ enum ib_qp_attr_mask { 
	IB_QP_RESERVED2			= (1<<22),

	IB_QP_RESERVED3			= (1<<23),

	IB_QP_RESERVED4			= (1<<24),

	IB_QP_RATE_LIMIT		= (1<<25),

};



enum ib_qp_state {
@@ -1151,6 +1152,7 @@ struct ib_qp_attr { 
	u8			rnr_retry;

	u8			alt_port_num;

	u8			alt_timeout;

	u32			rate_limit;

};



enum ib_wr_opcode {