freebsd-dev/sys/dev/cxgbe/tom/t4_tom_l2t.h
Navdeep Parhar 09fe63205c - 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)
2012-06-19 07:34:13 +00:00

54 lines
2.0 KiB
C

/*-
* Copyright (c) 2012 Chelsio Communications, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*
*/
#ifndef __T4_TOM_L2T_H
#define __T4_TOM_L2T_H
#include "t4_l2t.h"
int t4_l2t_send_slow(struct adapter *, struct wrqe *, struct l2t_entry *);
struct l2t_entry *t4_l2t_get(struct port_info *, struct ifnet *,
struct sockaddr *);
void t4_l2_update(struct toedev *, struct ifnet *, struct sockaddr *,
uint8_t *, uint16_t);
void t4_init_l2t_cpl_handlers(struct adapter *);
void t4_uninit_l2t_cpl_handlers(struct adapter *);
static inline int
t4_l2t_send(struct adapter *sc, struct wrqe *wr, struct l2t_entry *e)
{
if (__predict_true(e->state == L2T_STATE_VALID)) {
t4_wrq_tx(sc, wr);
return (0);
} else
return (t4_l2t_send_slow(sc, wr, e));
}
#endif /* __T4_TOM_L2T_H */