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RDMA/uverbs: Export XRC domains to user space

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Allow user space to create XRC domains.  Because XRCDs are expected to
be shared among multiple processes, we use inodes to identify an XRCD.

Based on patches by Jack Morgenstein <jackm@dev.mellanox.co.il>

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Sean Hefty
2011-05-24 08:33:46 -07:00
committed by Roland Dreier
parent d3d72d909e
commit 53d0bd1e7f
6 changed files with 367 additions and 1 deletions
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19
include/rdma/ib_user_verbs.h
View File

@@ -81,7 +81,9 @@ enum {
IB_USER_VERBS_CMD_MODIFY_SRQ,
IB_USER_VERBS_CMD_QUERY_SRQ,
IB_USER_VERBS_CMD_DESTROY_SRQ,
IB_USER_VERBS_CMD_POST_SRQ_RECV
IB_USER_VERBS_CMD_POST_SRQ_RECV,
IB_USER_VERBS_CMD_OPEN_XRCD,
IB_USER_VERBS_CMD_CLOSE_XRCD
};
/*
@@ -222,6 +224,21 @@ struct ib_uverbs_dealloc_pd {
__u32 pd_handle;
};
struct ib_uverbs_open_xrcd {
__u64 response;
__u32 fd;
__u32 oflags;
__u64 driver_data[0];
};
struct ib_uverbs_open_xrcd_resp {
__u32 xrcd_handle;
};
struct ib_uverbs_close_xrcd {
__u32 xrcd_handle;
};
struct ib_uverbs_reg_mr {
__u64 response;
__u64 start;

2
include/rdma/ib_verbs.h
View File

@@ -851,6 +851,7 @@ struct ib_ucontext {
struct list_head qp_list;
struct list_head srq_list;
struct list_head ah_list;
struct list_head xrcd_list;
int closing;
};
@@ -881,6 +882,7 @@ struct ib_pd {
struct ib_xrcd {
struct ib_device *device;
atomic_t usecnt; /* count all exposed resources */
struct inode *inode;
struct mutex tgt_qp_mutex;
struct list_head tgt_qp_list;