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/*-
* Copyright (c) 2007, Chelsio 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. Neither the name of the Chelsio Corporation nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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 _NETINET_TOEDEV_H_
#define _NETINET_TOEDEV_H_
#ifndef _KERNEL
#error "no user-serviceable parts inside"
#endif
extern uint32_t toedev_registration_count;
/* Parameter values for offload_get_phys_egress(). */
enum {
TOE_OPEN,
TOE_FAILOVER,
};
/* Parameter values for toe_failover(). */
enum {
TOE_ACTIVE_SLAVE,
TOE_LINK_DOWN,
TOE_LINK_UP,
TOE_RELEASE,
TOE_RELEASE_ALL,
};
#define TOENAMSIZ 16
/* Get the toedev associated with a ifnet. */
#define TOEDEV(ifp) ((ifp)->if_llsoftc)
struct offload_id {
unsigned int id;
unsigned long data;
};
struct ifnet;
struct rt_entry;
struct tom_info;
struct sysctl_oid;
struct socket;
struct mbuf;
struct toedev {
TAILQ_ENTRY(toedev) entry;
char tod_name[TOENAMSIZ]; /* TOE device name */
unsigned int tod_ttid; /* TOE type id */
unsigned long tod_flags; /* device flags */
unsigned int tod_mtu; /* max TX offloaded data */
unsigned int tod_nconn; /* max # of offloaded
* connections
*/
struct ifnet *tod_lldev; /* first interface */
const struct tom_info *tod_offload_mod; /* TCP offload module */
/*
* This TOE device is capable of offloading the connection for socket so
*/
int (*tod_can_offload)(struct toedev *dev, struct socket *so);
/*
* Establish a connection to nam using the TOE device dev
*/
int (*tod_connect)(struct toedev *dev, struct socket *so,
struct rtentry *rt, struct sockaddr *nam);
/*
* Send an mbuf down to the toe device
*/
int (*tod_send)(struct toedev *dev, struct mbuf *m);
/*
* Receive an array of mbufs from the TOE device dev
*/
int (*tod_recv)(struct toedev *dev, struct mbuf **m, int n);
/*
* Device specific ioctl interface
*/
int (*tod_ctl)(struct toedev *dev, unsigned int req, void *data);
/*
* Update L2 entry in toedev
*/
void (*tod_arp_update)(struct toedev *dev, struct rtentry *neigh);
/*
* Failover from one toe device to another
*/
void (*tod_failover)(struct toedev *dev, struct ifnet *bond_ifp,
struct ifnet *ndev, int event);
void *tod_priv; /* driver private data */
void *tod_l2opt; /* optional layer 2 data */
void *tod_l3opt; /* optional layer 3 data */
void *tod_l4opt; /* optional layer 4 data */
void *tod_ulp; /* upper lever protocol */
};
struct tom_info {
TAILQ_ENTRY(tom_info) entry;
int (*ti_attach)(struct toedev *dev,
const struct offload_id *entry);
int (*ti_detach)(struct toedev *dev);
const char *ti_name;
const struct offload_id *ti_id_table;
};
static __inline void
init_offload_dev(struct toedev *dev)
{
}
int register_tom(struct tom_info *t);
int unregister_tom(struct tom_info *t);
int register_toedev(struct toedev *dev, const char *name);
int unregister_toedev(struct toedev *dev);
int activate_offload(struct toedev *dev);
int toe_send(struct toedev *dev, struct mbuf *m);
void toe_arp_update(struct rtentry *rt);
struct ifnet *offload_get_phys_egress(struct ifnet *ifp,
struct socket *so, int context);
int toe_receive_mbuf(struct toedev *dev, struct mbuf **m, int n);
static __inline void
toe_neigh_update(struct ifnet *ifp)
{
}
static __inline void
toe_failover(struct ifnet *bond_ifp, struct ifnet *fail_ifp, int event)
{
}
static __inline int
toe_enslave(struct ifnet *bond_ifp, struct ifnet *slave_ifp)
{
return (0);
}
#endif /* _NETINET_TOEDEV_H_ */
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