204 lines
4.3 KiB
C
204 lines
4.3 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_TCP_OFLD_H_
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#define _NETINET_TCP_OFLD_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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#define SC_ENTRY_PRESENT 1
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#define SC_DROP 2
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#define tp_offload(tp) ((tp)->t_flags & TF_TOE)
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#define SO_OFFLOADABLE(so) ((so->so_options & SO_NO_OFFLOAD) == 0)
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int ofld_connect(struct socket *so, struct sockaddr *nam);
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int ofld_can_offload(struct tcpcb *tp, struct sockaddr *nam);
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int ofld_abort(struct tcpcb *tp);
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int ofld_disconnect(struct tcpcb *tp);
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int ofld_send(struct tcpcb *tp);
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int ofld_rcvd(struct tcpcb *tp);
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void ofld_detach(struct tcpcb *tp);
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void ofld_listen_close(struct tcpcb *tp);
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void ofld_listen_open(struct tcpcb *tp);
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#ifndef DISABLE_TCP_OFFLOAD
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static __inline int
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tcp_gen_connect(struct socket *so, struct sockaddr *nam)
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{
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struct tcpcb *tp = sototcpcb(so);
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int error;
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if (!SO_OFFLOADABLE(so) || (error = ofld_connect(so, nam)) != 0)
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error = tcp_output(tp);
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return (error);
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}
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static __inline int
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tcp_gen_disconnect(struct tcpcb *tp)
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{
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int error;
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if (tp_offload(tp))
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error = ofld_disconnect(tp);
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else
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error = tcp_output(tp);
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return (error);
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}
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static __inline int
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tcp_gen_abort(struct tcpcb *tp)
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{
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int error;
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if (tp_offload(tp))
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error = ofld_abort(tp);
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else
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error = tcp_output(tp);
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return (error);
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}
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static __inline int
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tcp_gen_send(struct tcpcb *tp)
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{
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int error;
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if (tp_offload(tp))
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error = ofld_send(tp);
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else
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error = tcp_output(tp);
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return (error);
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}
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static __inline int
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tcp_gen_rcvd(struct tcpcb *tp)
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{
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int error;
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if (tp_offload(tp))
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error = ofld_rcvd(tp);
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else
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error = tcp_output(tp);
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return (error);
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}
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static __inline void
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tcp_gen_listen_open(struct tcpcb *tp)
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{
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if (SO_OFFLOADABLE(tp->t_inpcb->inp_socket))
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ofld_listen_open(tp);
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}
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static __inline void
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tcp_gen_listen_close(struct tcpcb *tp)
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{
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ofld_listen_close(tp);
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}
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static __inline void
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tcp_gen_detach(struct tcpcb *tp)
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{
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if (tp_offload(tp))
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ofld_detach(tp);
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}
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#else
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static __inline int
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tcp_gen_connect(struct socket *so, struct sockaddr *nam)
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{
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return (tcp_output(tp));
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}
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static __inline int
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tcp_gen_disconnect(struct tcpcb *tp)
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{
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return (tcp_output(tp));
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}
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static __inline int
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tcp_gen_abort(struct tcpcb *tp)
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{
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return (tcp_output(tp));
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}
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static __inline int
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tcp_gen_send(struct tcpcb *tp)
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{
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return (tcp_output(tp));
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}
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static __inline int
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tcp_gen_rcvd(struct tcpcb *tp)
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{
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return (tcp_output(tp));
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}
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static __inline void
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tcp_gen_listen_open(struct tcpcb *tp)
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{
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}
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static __inline void
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tcp_gen_listen_close(struct tcpcb *tp)
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{
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}
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static __inline void
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tcp_gen_detach(struct tcpcb *tp)
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{
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}
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#endif
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struct toe_usrreqs {
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int (*tu_send)(struct tcpcb *tp);
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int (*tu_rcvd)(struct tcpcb *tp);
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int (*tu_disconnect)(struct tcpcb *tp);
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int (*tu_abort)(struct tcpcb *tp);
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void (*tu_detach)(struct tcpcb *tp);
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void (*tu_syncache_event)(int event, void *toep);
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};
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#define OFLD_LISTEN_OPEN 1
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#define OFLD_LISTEN_CLOSE 2
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typedef void (*ofld_listen_fn)(void *, int, struct tcpcb *);
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EVENTHANDLER_DECLARE(ofld_listen, ofld_listen_fn);
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#endif
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