163 lines
4.6 KiB
C
163 lines
4.6 KiB
C
/*-
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* Copyright (c) 2007, Chelsio Inc.
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* All rights reserved.
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*
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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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*
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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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*
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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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*
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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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*
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* $FreeBSD$
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*/
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#ifndef _NETINET_TOEDEV_H_
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#define _NETINET_TOEDEV_H_
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#ifndef _KERNEL
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#error "no user-serviceable parts inside"
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#endif
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extern uint32_t toedev_registration_count;
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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 tod_name[TOENAMSIZ]; /* TOE device name */
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unsigned int tod_ttid; /* TOE type id */
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unsigned long tod_flags; /* device flags */
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unsigned int tod_mtu; /* max TX offloaded data */
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unsigned int tod_nconn; /* max # of offloaded
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* connections
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*/
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struct ifnet *tod_lldev; /* first interface */
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const struct tom_info *tod_offload_mod; /* TCP offload module */
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/*
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* This TOE device is capable of offloading the connection for socket so
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*/
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int (*tod_can_offload)(struct toedev *dev, struct socket *so);
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/*
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* Establish a connection to nam using the TOE device dev
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*/
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int (*tod_connect)(struct toedev *dev, struct socket *so,
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struct rtentry *rt, struct sockaddr *nam);
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/*
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* Send an mbuf down to the toe device
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*/
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int (*tod_send)(struct toedev *dev, struct mbuf *m);
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/*
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* Receive an array of mbufs from the TOE device dev
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*/
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int (*tod_recv)(struct toedev *dev, struct mbuf **m, int n);
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/*
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* Device specific ioctl interface
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*/
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int (*tod_ctl)(struct toedev *dev, unsigned int req, void *data);
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/*
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* Update L2 entry in toedev
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*/
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void (*tod_arp_update)(struct toedev *dev, struct rtentry *neigh);
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/*
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* Failover from one toe device to another
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*/
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void (*tod_failover)(struct toedev *dev, struct ifnet *bond_ifp,
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struct ifnet *ndev, int event);
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void *tod_priv; /* driver private data */
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void *tod_l2opt; /* optional layer 2 data */
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void *tod_l3opt; /* optional layer 3 data */
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void *tod_l4opt; /* optional layer 4 data */
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void *tod_ulp; /* upper lever protocol */
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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 (*ti_attach)(struct toedev *dev,
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const struct offload_id *entry);
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int (*ti_detach)(struct toedev *dev);
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const char *ti_name;
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const struct offload_id *ti_id_table;
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};
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static __inline void
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init_offload_dev(struct toedev *dev)
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{
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}
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int register_tom(struct tom_info *t);
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int unregister_tom(struct tom_info *t);
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int register_toedev(struct toedev *dev, const char *name);
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int unregister_toedev(struct toedev *dev);
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int activate_offload(struct toedev *dev);
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int toe_send(struct toedev *dev, struct mbuf *m);
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void toe_arp_update(struct rtentry *rt);
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struct ifnet *offload_get_phys_egress(struct ifnet *ifp,
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struct socket *so, int context);
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int toe_receive_mbuf(struct toedev *dev, struct mbuf **m, int n);
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static __inline void
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toe_neigh_update(struct ifnet *ifp)
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{
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}
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static __inline void
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toe_failover(struct ifnet *bond_ifp, struct ifnet *fail_ifp, int event)
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{
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}
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static __inline int
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toe_enslave(struct ifnet *bond_ifp, struct ifnet *slave_ifp)
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{
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return (0);
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}
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#endif /* _NETINET_TOEDEV_H_ */
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