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IB/core: Support rate limit for packet pacing

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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: Bodong Wang <bodong@mellanox.com>
Reviewed-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Bodong Wang 2016-12-01 13:43:14 +02:00 committed by Doug Ledford
parent d949167d68
commit 528e5a1bd3
2 changed files with 4 additions and 0 deletions
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2
drivers/infiniband/core/verbs.c
View file

@ -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] = {

2
include/rdma/ib_verbs.h
View file

@ -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 {