IB/uverbs: Extend modify_qp and support packet pacing

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.

Bodong Wang committed 9 years ago

Commit 189aba91 parent 528e5a14 files · +146 −69Browse files

Showing the changes to include/uapi (1 of 4 files). Show all

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include/uapi/rdma/ib_user_verbs.h+21−0

@@ -37,6 +37,7 @@ · 36 unmodified lines
37	37	#define IB_USER_VERBS_H
38	38
39	39	#include <linux/types.h>
	40	+#include <rdma/ib_verbs.h>
40	41
41	42	/*
42	43	* Increment this value if any changes that break userspace ABI
@@ -93,6 +94,7 @@ enum { · 50 unmodified lines
93	94	IB_USER_VERBS_EX_CMD_QUERY_DEVICE = IB_USER_VERBS_CMD_QUERY_DEVICE,
94	95	IB_USER_VERBS_EX_CMD_CREATE_CQ = IB_USER_VERBS_CMD_CREATE_CQ,
95	96	IB_USER_VERBS_EX_CMD_CREATE_QP = IB_USER_VERBS_CMD_CREATE_QP,
	97	+ IB_USER_VERBS_EX_CMD_MODIFY_QP = IB_USER_VERBS_CMD_MODIFY_QP,
96	98	IB_USER_VERBS_EX_CMD_CREATE_FLOW = IB_USER_VERBS_CMD_THRESHOLD,
97	99	IB_USER_VERBS_EX_CMD_DESTROY_FLOW,
98	100	IB_USER_VERBS_EX_CMD_CREATE_WQ,
@@ -545,6 +547,14 @@ enum { · 446 unmodified lines
545	547	IB_UVERBS_CREATE_QP_SUP_COMP_MASK = IB_UVERBS_CREATE_QP_MASK_IND_TABLE,
546	548	};
547	549
	550	+enum {
	551	+ IB_USER_LEGACY_LAST_QP_ATTR_MASK = IB_QP_DEST_QPN
	552	+};
	553	+
	554	+enum {
	555	+ IB_USER_LAST_QP_ATTR_MASK = IB_QP_RATE_LIMIT
	556	+};
	557	+
548	558	struct ib_uverbs_ex_create_qp {
549	559	__u64 user_handle;
550	560	__u32 pd_handle;
@@ -684,9 +694,20 @@ struct ib_uverbs_modify_qp { · 133 unmodified lines
684	694	__u64 driver_data[0];
685	695	};
686	696
	697	+struct ib_uverbs_ex_modify_qp {
	698	+ struct ib_uverbs_modify_qp base;
	699	+ __u32 rate_limit;
	700	+ __u32 reserved;
	701	+};
	702	+
687	703	struct ib_uverbs_modify_qp_resp {
688	704	};
689	705
	706	+struct ib_uverbs_ex_modify_qp_resp {
	707	+ __u32 comp_mask;
	708	+ __u32 response_length;
	709	+};
	710	+
690	711	struct ib_uverbs_destroy_qp {
691	712	__u64 response;
692	713	__u32 qp_handle;