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>

diff --git a/fs/ceph/messenger.c b/fs/ceph/messenger.c
index d18a544..50c5f24 100644 (file)
--- 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 4e5764c..889f81f 100644 (file)
--- 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 */