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133 lines
4.4 KiB
C
133 lines
4.4 KiB
C
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/**************************************************************************
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Copyright (c) 2007, Chelsio Inc.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Neither the name of the Chelsio Corporation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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$FreeBSD$
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***************************************************************************/
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#ifndef _OFFLOAD_DEV_H_
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#define _OFFLOAD_DEV_H_
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/* Parameter values for offload_get_phys_egress() */
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enum {
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TOE_OPEN,
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TOE_FAILOVER,
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};
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/* Parameter values for toe_failover() */
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enum {
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TOE_ACTIVE_SLAVE,
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TOE_LINK_DOWN,
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TOE_LINK_UP,
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TOE_RELEASE,
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TOE_RELEASE_ALL,
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};
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#define TOENAMSIZ 16
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/* Get the toedev associated with a ifnet */
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#define TOEDEV(ifp) ((ifp)->if_llsoftc)
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struct offload_id {
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unsigned int id;
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unsigned long data;
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};
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struct ifnet;
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struct rt_entry;
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struct tom_info;
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struct sysctl_oid;
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struct socket;
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struct mbuf;
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struct toedev {
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TAILQ_ENTRY(toedev) entry;
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char name[TOENAMSIZ]; /* TOE device name */
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unsigned int ttid; /* TOE type id */
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unsigned long flags; /* device flags */
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unsigned int mtu; /* max size of TX offloaded data */
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unsigned int nconn; /* max # of offloaded connections */
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struct ifnet *lldev; /* LL device associated with TOE messages */
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const struct tom_info *offload_mod; /* attached TCP offload module */
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struct sysctl_oid *sysctl_root; /* root of proc dir for this TOE */
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int (*open)(struct toedev *dev);
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int (*close)(struct toedev *dev);
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int (*can_offload)(struct toedev *dev, struct socket *so);
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int (*connect)(struct toedev *dev, struct socket *so,
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struct ifnet *egress_ifp);
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int (*send)(struct toedev *dev, struct mbuf *m);
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int (*recv)(struct toedev *dev, struct mbuf **m, int n);
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int (*ctl)(struct toedev *dev, unsigned int req, void *data);
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void (*arp_update)(struct toedev *dev, struct rtentry *neigh);
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void (*failover)(struct toedev *dev, struct ifnet *bond_ifp,
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struct ifnet *ndev, int event);
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void *priv; /* driver private data */
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void *l2opt; /* optional layer 2 data */
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void *l3opt; /* optional layer 3 data */
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void *l4opt; /* optional layer 4 data */
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void *ulp; /* ulp stuff */
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};
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struct tom_info {
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TAILQ_ENTRY(tom_info) entry;
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int (*attach)(struct toedev *dev, const struct offload_id *entry);
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int (*detach)(struct toedev *dev);
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const char *name;
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const struct offload_id *id_table;
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};
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static inline void init_offload_dev(struct toedev *dev)
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{
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}
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extern int register_tom(struct tom_info *t);
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extern int unregister_tom(struct tom_info *t);
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extern int register_toedev(struct toedev *dev, const char *name);
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extern int unregister_toedev(struct toedev *dev);
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extern int activate_offload(struct toedev *dev);
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extern int toe_send(struct toedev *dev, struct mbuf *m);
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extern void toe_arp_update(struct rtentry *rt);
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extern struct ifnet *offload_get_phys_egress(struct ifnet *dev,
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struct socket *so,
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int context);
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extern int toe_receive_mbuf(struct toedev *dev, struct mbuf **m, int n);
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static inline void toe_neigh_update(struct ifnet *neigh) {}
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static inline void toe_failover(struct ifnet *bond_ifp,
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struct ifnet *fail_ifp, int event)
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{}
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static inline int toe_enslave(struct ifnet *bond_ifp,
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struct ifnet *slave_ifp)
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{
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return 0;
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}
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#endif /* _OFFLOAD_DEV_H_ */
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