RDS: split out connection specific state from rds_connection to rds_conn_path
In preparation for multipath RDS, split the rds_connection
structure into a base structure, and a per-path struct rds_conn_path.
The base structure tracks information and locks common to all
paths. The workqs for send/recv/shutdown etc are tracked per
rds_conn_path. Thus the workq callbacks now work with rds_conn_path.
This commit allows for one rds_conn_path per rds_connection, and will
be extended into multiple conn_paths in subsequent commits.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/rds/rds_single_path.h b/net/rds/rds_single_path.h
new file mode 100644
index 0000000..e1241af
--- /dev/null
+++ b/net/rds/rds_single_path.h
@@ -0,0 +1,30 @@
+#ifndef _RDS_RDS_SINGLE_H
+#define _RDS_RDS_SINGLE_H
+
+#define c_xmit_rm c_path[0].cp_xmit_rm
+#define c_xmit_sg c_path[0].cp_xmit_sg
+#define c_xmit_hdr_off c_path[0].cp_xmit_hdr_off
+#define c_xmit_data_off c_path[0].cp_xmit_data_off
+#define c_xmit_atomic_sent c_path[0].cp_xmit_atomic_sent
+#define c_xmit_rdma_sent c_path[0].cp_xmit_rdma_sent
+#define c_xmit_data_sent c_path[0].cp_xmit_data_sent
+#define c_lock c_path[0].cp_lock
+#define c_next_tx_seq c_path[0].cp_next_tx_seq
+#define c_send_queue c_path[0].cp_send_queue
+#define c_retrans c_path[0].cp_retrans
+#define c_next_rx_seq c_path[0].cp_next_rx_seq
+#define c_transport_data c_path[0].cp_transport_data
+#define c_state c_path[0].cp_state
+#define c_send_gen c_path[0].cp_send_gen
+#define c_flags c_path[0].cp_flags
+#define c_reconnect_jiffies c_path[0].cp_reconnect_jiffies
+#define c_send_w c_path[0].cp_send_w
+#define c_recv_w c_path[0].cp_recv_w
+#define c_conn_w c_path[0].cp_conn_w
+#define c_down_w c_path[0].cp_down_w
+#define c_cm_lock c_path[0].cp_cm_lock
+#define c_waitq c_path[0].cp_waitq
+#define c_unacked_packets c_path[0].cp_unacked_packets
+#define c_unacked_bytes c_path[0].cp_unacked_bytes
+
+#endif /* _RDS_RDS_SINGLE_H */