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[IB] uverbs: ABI-breaking fixes for userspace verbs

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Introduce new userspace verbs ABI version 3.  This eliminates some
unneeded commands, and adds support for user-created completion
channels.  This cleans up problems with file leaks on error paths, and
also makes sure that file descriptors are always installed into the
correct process.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Roland Dreier
2005-09-26 13:53:25 -07:00
parent 33033b7972
commit 6b73597e70
4 changed files with 258 additions and 296 deletions
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58
include/rdma/ib_user_verbs.h
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@@ -42,15 +42,12 @@
* Increment this value if any changes that break userspace ABI
* compatibility are made.
*/
#define IB_USER_VERBS_ABI_VERSION 2
#define IB_USER_VERBS_ABI_VERSION 3
enum {
IB_USER_VERBS_CMD_QUERY_PARAMS,
IB_USER_VERBS_CMD_GET_CONTEXT,
IB_USER_VERBS_CMD_QUERY_DEVICE,
IB_USER_VERBS_CMD_QUERY_PORT,
IB_USER_VERBS_CMD_QUERY_GID,
IB_USER_VERBS_CMD_QUERY_PKEY,
IB_USER_VERBS_CMD_ALLOC_PD,
IB_USER_VERBS_CMD_DEALLOC_PD,
IB_USER_VERBS_CMD_CREATE_AH,
@@ -65,6 +62,7 @@ enum {
IB_USER_VERBS_CMD_ALLOC_MW,
IB_USER_VERBS_CMD_BIND_MW,
IB_USER_VERBS_CMD_DEALLOC_MW,
IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL,
IB_USER_VERBS_CMD_CREATE_CQ,
IB_USER_VERBS_CMD_RESIZE_CQ,
IB_USER_VERBS_CMD_DESTROY_CQ,
@@ -118,27 +116,14 @@ struct ib_uverbs_cmd_hdr {
__u16 out_words;
};
/*
* No driver_data for "query params" command, since this is intended
* to be a core function with no possible device dependence.
*/
struct ib_uverbs_query_params {
__u64 response;
};
struct ib_uverbs_query_params_resp {
__u32 num_cq_events;
};
struct ib_uverbs_get_context {
__u64 response;
__u64 cq_fd_tab;
__u64 driver_data[0];
};
struct ib_uverbs_get_context_resp {
__u32 async_fd;
__u32 reserved;
__u32 num_comp_vectors;
};
struct ib_uverbs_query_device {
@@ -220,31 +205,6 @@ struct ib_uverbs_query_port_resp {
__u8 reserved[3];
};
struct ib_uverbs_query_gid {
__u64 response;
__u8 port_num;
__u8 index;
__u8 reserved[6];
__u64 driver_data[0];
};
struct ib_uverbs_query_gid_resp {
__u8 gid[16];
};
struct ib_uverbs_query_pkey {
__u64 response;
__u8 port_num;
__u8 index;
__u8 reserved[6];
__u64 driver_data[0];
};
struct ib_uverbs_query_pkey_resp {
__u16 pkey;
__u16 reserved;
};
struct ib_uverbs_alloc_pd {
__u64 response;
__u64 driver_data[0];
@@ -278,11 +238,21 @@ struct ib_uverbs_dereg_mr {
__u32 mr_handle;
};
struct ib_uverbs_create_comp_channel {
__u64 response;
};
struct ib_uverbs_create_comp_channel_resp {
__u32 fd;
};
struct ib_uverbs_create_cq {
__u64 response;
__u64 user_handle;
__u32 cqe;
__u32 event_handler;
__u32 comp_vector;
__s32 comp_channel;
__u32 reserved;
__u64 driver_data[0];
};