174 lines
5.4 KiB
C
174 lines
5.4 KiB
C
|
|
/**************************************************************************
|
|
|
|
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: src/sys/dev/cxgb/ulp/toecore/toedev.h,v 1.1 2007/05/25 16:17:59 kmacy Exp $
|
|
|
|
***************************************************************************/
|
|
|
|
#ifndef _OFFLOAD_DEV_H_
|
|
#define _OFFLOAD_DEV_H_
|
|
|
|
#include <net/route.h>
|
|
|
|
/* 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
|
|
|
|
/* belongs in linux/netdevice.h */
|
|
#define NETIF_F_TCPIP_OFFLOAD (1 << 15)
|
|
|
|
/* Get the toedev associated with a ifnet */
|
|
#define TOEDEV(netdev) (*(struct toedev **)&(netdev)->if_softc)
|
|
|
|
/* offload type ids */
|
|
enum {
|
|
TOE_ID_CHELSIO_T1 = 1,
|
|
TOE_ID_CHELSIO_T1C,
|
|
TOE_ID_CHELSIO_T2,
|
|
TOE_ID_CHELSIO_T3,
|
|
TOE_ID_CHELSIO_T3B,
|
|
};
|
|
|
|
struct offload_id {
|
|
unsigned int id;
|
|
unsigned long data;
|
|
};
|
|
|
|
struct ifnet;
|
|
struct rt_entry;
|
|
struct tom_info;
|
|
struct sysctl_oid;
|
|
struct socket;
|
|
struct mbuf;
|
|
|
|
enum toetype {
|
|
T3A = 0,
|
|
T3B
|
|
};
|
|
|
|
struct toedev {
|
|
char name[TOENAMSIZ]; /* TOE device name */
|
|
enum toetype type;
|
|
struct adapter *adapter;
|
|
unsigned int ttid; /* TOE type id */
|
|
unsigned long flags; /* device flags */
|
|
unsigned int mtu; /* max size of TX offloaded data */
|
|
unsigned int nconn; /* max # of offloaded connections */
|
|
struct ifnet *lldev; /* LL device associated with TOE messages */
|
|
const struct tom_info *offload_mod; /* attached TCP offload module */
|
|
struct sysctl_oid *sysctl_root; /* root of proc dir for this TOE */
|
|
TAILQ_ENTRY(toedev) ofld_entry; /* for list linking */
|
|
int (*open)(struct toedev *dev);
|
|
int (*close)(struct toedev *dev);
|
|
int (*can_offload)(struct toedev *dev, struct socket *so);
|
|
int (*connect)(struct toedev *dev, struct socket *so,
|
|
struct ifnet *egress_ifp);
|
|
int (*send)(struct toedev *dev, struct mbuf *m);
|
|
int (*recv)(struct toedev *dev, struct mbuf **m, int n);
|
|
int (*ctl)(struct toedev *dev, unsigned int req, void *data);
|
|
void (*neigh_update)(struct toedev *dev, struct rtentry *neigh);
|
|
void (*failover)(struct toedev *dev, struct ifnet *bond_ifp,
|
|
struct ifnet *ndev, int event);
|
|
void *priv; /* driver private data */
|
|
void *l2opt; /* optional layer 2 data */
|
|
void *l3opt; /* optional layer 3 data */
|
|
void *l4opt; /* optional layer 4 data */
|
|
void *ulp; /* ulp stuff */
|
|
};
|
|
|
|
struct tom_info {
|
|
int (*attach)(struct toedev *dev, const struct offload_id *entry);
|
|
int (*detach)(struct toedev *dev);
|
|
const char *name;
|
|
const struct offload_id *id_table;
|
|
TAILQ_ENTRY(tom_info) entry;
|
|
};
|
|
|
|
static inline void init_offload_dev(struct toedev *dev)
|
|
{
|
|
|
|
}
|
|
|
|
extern int register_tom(struct tom_info *t);
|
|
extern int unregister_tom(struct tom_info *t);
|
|
extern int register_toedev(struct toedev *dev, const char *name);
|
|
extern int unregister_toedev(struct toedev *dev);
|
|
extern int activate_offload(struct toedev *dev);
|
|
extern int toe_send(struct toedev *dev, struct mbuf *m);
|
|
extern struct ifnet *offload_get_phys_egress(struct ifnet *dev,
|
|
struct socket *so,
|
|
int context);
|
|
|
|
#if defined(CONFIG_TCP_OFFLOAD_MODULE)
|
|
static inline int toe_receive_mbuf(struct toedev *dev, struct mbuf **m,
|
|
int n)
|
|
{
|
|
return dev->recv(dev, m, n);
|
|
}
|
|
|
|
extern int prepare_tcp_for_offload(void);
|
|
extern void restore_tcp_to_nonoffload(void);
|
|
#elif defined(CONFIG_TCP_OFFLOAD)
|
|
extern int toe_receive_mbuf(struct toedev *dev, struct mbuf **m, int n);
|
|
#endif
|
|
|
|
#if defined(CONFIG_TCP_OFFLOAD) || \
|
|
(defined(CONFIG_TCP_OFFLOAD_MODULE) && defined(MODULE))
|
|
extern void toe_neigh_update(struct rtentry *neigh);
|
|
extern void toe_failover(struct ifnet *bond_ifp,
|
|
struct ifnet *fail_ifp, int event);
|
|
extern int toe_enslave(struct ifnet *bond_ifp,
|
|
struct ifnet *slave_ifp);
|
|
#else
|
|
static inline void toe_neigh_update(struct ifnet *neigh) {}
|
|
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 /* CONFIG_TCP_OFFLOAD */
|
|
|
|
#endif /* _OFFLOAD_DEV_H_ */
|