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IB/uverbs: Extend modify_qp and support packet pacing

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An new uverbs command ib_uverbs_ex_modify_qp is added to support more QP
attributes. User driver should choose to call the legacy/extended API
based on input mask.

IB_USER_LAST_QP_ATTR_MASK is added to indicated the maximum bit position
which supports legacy ib_uverbs_modify_qp.
IB_USER_LEGACY_LAST_QP_ATTR_MASK indicates the maximum bit position
which supports ib_uverbs_ex_modify_qp, the value of this mask should be
updated if new mask is added later.

Along with this change, rate_limit is supported by the extended command,
user driver could use it to control packet packing.

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 13:43:15 +02:00
committed by Doug Ledford
parent 528e5a1bd3
commit 189aba99e7
4 changed files with 144 additions and 67 deletions
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21
include/uapi/rdma/ib_user_verbs.h
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@@ -37,6 +37,7 @@
#define IB_USER_VERBS_H
#include <linux/types.h>
#include <rdma/ib_verbs.h>
/*
* Increment this value if any changes that break userspace ABI
@@ -93,6 +94,7 @@ enum {
IB_USER_VERBS_EX_CMD_QUERY_DEVICE = IB_USER_VERBS_CMD_QUERY_DEVICE,
IB_USER_VERBS_EX_CMD_CREATE_CQ = IB_USER_VERBS_CMD_CREATE_CQ,
IB_USER_VERBS_EX_CMD_CREATE_QP = IB_USER_VERBS_CMD_CREATE_QP,
IB_USER_VERBS_EX_CMD_MODIFY_QP = IB_USER_VERBS_CMD_MODIFY_QP,
IB_USER_VERBS_EX_CMD_CREATE_FLOW = IB_USER_VERBS_CMD_THRESHOLD,
IB_USER_VERBS_EX_CMD_DESTROY_FLOW,
IB_USER_VERBS_EX_CMD_CREATE_WQ,
@@ -545,6 +547,14 @@ enum {
IB_UVERBS_CREATE_QP_SUP_COMP_MASK = IB_UVERBS_CREATE_QP_MASK_IND_TABLE,
};
enum {
IB_USER_LEGACY_LAST_QP_ATTR_MASK = IB_QP_DEST_QPN
};
enum {
IB_USER_LAST_QP_ATTR_MASK = IB_QP_RATE_LIMIT
};
struct ib_uverbs_ex_create_qp {
__u64 user_handle;
__u32 pd_handle;
@@ -684,9 +694,20 @@ struct ib_uverbs_modify_qp {
__u64 driver_data[0];
};
struct ib_uverbs_ex_modify_qp {
struct ib_uverbs_modify_qp base;
__u32 rate_limit;
__u32 reserved;
};
struct ib_uverbs_modify_qp_resp {
};
struct ib_uverbs_ex_modify_qp_resp {
__u32 comp_mask;
__u32 response_length;
};
struct ib_uverbs_destroy_qp {
__u64 response;
__u32 qp_handle;