- Updated TOE support in the kernel.

- Stateful TCP offload drivers for Terminator 3 and 4 (T3 and T4) ASICs.
  These are available as t3_tom and t4_tom modules that augment cxgb(4)
  and cxgbe(4) respectively.  The cxgb/cxgbe drivers continue to work as
  usual with or without these extra features.

- iWARP driver for Terminator 3 ASIC (kernel verbs).  T4 iWARP in the
  works and will follow soon.

Build-tested with make universe.

30s overview
============
What interfaces support TCP offload?  Look for TOE4 and/or TOE6 in the
capabilities of an interface:
# ifconfig -m | grep TOE

Enable/disable TCP offload on an interface (just like any other ifnet
capability):
# ifconfig cxgbe0 toe
# ifconfig cxgbe0 -toe

Which connections are offloaded?  Look for toe4 and/or toe6 in the
output of netstat and sockstat:
# netstat -np tcp | grep toe
# sockstat -46c | grep toe

Reviewed by:	bz, gnn
Sponsored by:	Chelsio communications.
MFC after:	~3 months (after 9.1, and after ensuring MFC is feasible)

1 files changed, 3 insertions, 1 deletions

diff --git a/sys/ofed/include/rdma/iw_cm.h b/sys/ofed/include/rdma/iw_cm.h
index cbb822e..412320e 100644
--- a/sys/ofed/include/rdma/iw_cm.h
+++ b/sys/ofed/include/rdma/iw_cm.h
@@ -63,6 +63,7 @@ struct iw_cm_event {
 	void *private_data;
 	u8 private_data_len;
 	void *provider_data;
+	struct socket *so;
 };
 
 /**
@@ -98,6 +99,7 @@ struct iw_cm_id {
 	/* Used by provider to add and remove refs on IW cm_id */
 	void (*add_ref)(struct iw_cm_id *);
 	void (*rem_ref)(struct iw_cm_id *);
+	struct socket           *so;
 };
 
 struct iw_cm_conn_param {
@@ -139,7 +141,7 @@ struct iw_cm_verbs {
  *   returned IW CM identifier.
  * @context: User specified context associated with the id.
  */
-struct iw_cm_id *iw_create_cm_id(struct ib_device *device,
+struct iw_cm_id *iw_create_cm_id(struct ib_device *device, struct socket *so,
 				 iw_cm_handler cm_handler, void *context);
 
 /**