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RDMA/ucma: Allow user space to specify AF_IB when joining multicast

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Allow user space applications to join multicast groups using MGIDs
directly.  MGIDs may be passed using AF_IB addresses.  Since the
current multicast join command only supports addresses as large as
sockaddr_in6, define a new structure for joining addresses specified
using sockaddr_ib.

Since AF_IB allows the user to specify the qkey when resolving a
remote UD QP address, when joining the multicast group use the qkey
value, if one has been assigned.

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 10:09:33 -07:00
committed by Roland Dreier
parent 209cf2a751
commit 5bc2b7b397
3 changed files with 62 additions and 14 deletions
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include/uapi/rdma/rdma_user_cm.h
+11 -1
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@@ -64,7 +64,8 @@ enum {
RDMA_USER_CM_CMD_MIGRATE_ID,
RDMA_USER_CM_CMD_QUERY,
RDMA_USER_CM_CMD_BIND,
RDMA_USER_CM_CMD_RESOLVE_ADDR
RDMA_USER_CM_CMD_RESOLVE_ADDR,
RDMA_USER_CM_CMD_JOIN_MCAST
};
/*
@@ -242,6 +243,15 @@ struct rdma_ucm_join_ip_mcast {
__u32 id;
};
struct rdma_ucm_join_mcast {
__u64 response; /* rdma_ucma_create_id_resp */
__u64 uid;
__u32 id;
__u16 addr_size;
__u16 reserved;
struct sockaddr_storage addr;
};
struct rdma_ucm_get_event {
__u64 response;
};