leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

RDMA/ucma: Support querying for AF_IB addresses

Browse Source 
The sockaddr structure for AF_IB is larger than sockaddr_in6.  The
rdma cm user space ABI uses the latter to exchange address information
between user space and the kernel.

To support querying for larger addresses, define a new query command
that exchanges data using sockaddr_storage, rather than sockaddr_in6.
Unlike the existing query_route command, the new command only returns
address information.  Route (i.e. path record) data is separated.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Sean Hefty
2013-05-29 10:09:25 -07:00
committed by Roland Dreier
parent 94d0c93941
commit ee7aed4528
2 changed files with 93 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
include/uapi/rdma/rdma_user_cm.h
View File

@@ -61,7 +61,8 @@ enum {
RDMA_USER_CM_CMD_NOTIFY,
RDMA_USER_CM_CMD_JOIN_MCAST,
RDMA_USER_CM_CMD_LEAVE_MCAST,
RDMA_USER_CM_CMD_MIGRATE_ID
RDMA_USER_CM_CMD_MIGRATE_ID,
RDMA_USER_CM_CMD_QUERY
};
/*
@@ -113,10 +114,14 @@ struct rdma_ucm_resolve_route {
__u32 timeout_ms;
};
struct rdma_ucm_query_route {
enum {
RDMA_USER_CM_QUERY_ADDR
};
struct rdma_ucm_query {
__u64 response;
__u32 id;
__u32 reserved;
__u32 option;
};
struct rdma_ucm_query_route_resp {
@@ -129,6 +134,17 @@ struct rdma_ucm_query_route_resp {
__u8 reserved[3];
};
struct rdma_ucm_query_addr_resp {
__u64 node_guid;
__u8 port_num;
__u8 reserved;
__u16 pkey;
__u16 src_size;
__u16 dst_size;
struct sockaddr_storage src_addr;
struct sockaddr_storage dst_addr;
};
struct rdma_ucm_conn_param {
__u32 qp_num;
__u32 qkey;