ceph: save peer feature bits in connection structure

These are used for adjusting behavior, such as conditionally encoding a
newer message format.

Signed-off-by: Sage Weil <sage@newdream.net>

2 files changed, 2 insertions, 0 deletions

diff --git a/fs/ceph/messenger.c b/fs/ceph/messenger.c
index d18a544490f6..50c5f24086fd 100644
--- a/fs/ceph/messenger.c
+++ b/fs/ceph/messenger.c
@@ -1223,6 +1223,7 @@ static int process_connect(struct ceph_connection *con)
                 clear_bit(CONNECTING, &con->state);
                 con->peer_global_seq = le32_to_cpu(con->in_reply.global_seq);
                 con->connect_seq++;
+                con->peer_features = server_feat;
                 dout("process_connect got READY gseq %d cseq %d (%d)\n",
                      con->peer_global_seq,
                      le32_to_cpu(con->in_reply.connect_seq),
diff --git a/fs/ceph/messenger.h b/fs/ceph/messenger.h
index 4e5764c7fbc2..889f81f093c9 100644
--- a/fs/ceph/messenger.h
+++ b/fs/ceph/messenger.h
@@ -142,6 +142,7 @@ struct ceph_connection {
         struct ceph_entity_addr peer_addr; /* peer address */
         struct ceph_entity_name peer_name; /* peer name */
         struct ceph_entity_addr peer_addr_for_me;
+        unsigned peer_features;
         u32 connect_seq;      /* identify the most recent connection
                                  attempt for this connection, client */
         u32 peer_global_seq;  /* peer's global seq for this connection */