summaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
authorSean Hefty <sean.hefty@intel.com>2013-05-29 10:09:27 -0700
committerRoland Dreier <roland@purestorage.com>2013-06-20 23:35:40 -0700
commitac53b264b2f39e89781e3b855008123dfdb44aea (patch)
treec72f7ee7aed7071da300d1f5cb52b0767b949ef5 /include
parent2e08b5879e9244fa893fe09f5b887f72f4e6c29b (diff)
downloadlinux-stable-ac53b264b2f39e89781e3b855008123dfdb44aea.tar.gz
linux-stable-ac53b264b2f39e89781e3b855008123dfdb44aea.tar.bz2
linux-stable-ac53b264b2f39e89781e3b855008123dfdb44aea.zip
RDMA/ucma: Support querying when IB paths are not reversible
The current query_route call can return up to two path records. The assumption being that one is the primary path, with optional support for an alternate path. In both cases, the paths are assumed to be reversible and are used to send CM MADs. With the ability to manually set IB path data, the rdma cm can eventually be capable of using up to 6 paths per connection: forward primary, reverse primary, forward alternate, reverse alternate, reversible primary path for CM MADs reversible alternate path for CM MADs. (It is unclear at this time if IB routing will complicate this) In order to handle more flexible routing topologies, add a new command to report any number of paths. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'include')
-rw-r--r--include/uapi/rdma/rdma_user_cm.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/include/uapi/rdma/rdma_user_cm.h b/include/uapi/rdma/rdma_user_cm.h
index 3ea7e7a4d54b..07eb6cfa926c 100644
--- a/include/uapi/rdma/rdma_user_cm.h
+++ b/include/uapi/rdma/rdma_user_cm.h
@@ -115,7 +115,8 @@ struct rdma_ucm_resolve_route {
};
enum {
- RDMA_USER_CM_QUERY_ADDR
+ RDMA_USER_CM_QUERY_ADDR,
+ RDMA_USER_CM_QUERY_PATH
};
struct rdma_ucm_query {
@@ -145,6 +146,12 @@ struct rdma_ucm_query_addr_resp {
struct sockaddr_storage dst_addr;
};
+struct rdma_ucm_query_path_resp {
+ __u32 num_paths;
+ __u32 reserved;
+ struct ib_path_rec_data path_data[0];
+};
+
struct rdma_ucm_conn_param {
__u32 qp_num;
__u32 qkey;