153 lines
3.5 KiB
C
153 lines
3.5 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/types.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/sysctl.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <net/if.h>
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#include <net/if_types.h>
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#include <net/if_var.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/in_pcb.h>
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#include <netinet/tcp.h>
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#include <netinet/tcp_var.h>
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#include <netinet/tcp_offload.h>
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#include <netinet/toedev.h>
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int
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tcp_offload_connect(struct socket *so, struct sockaddr *nam)
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{
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struct ifnet *ifp;
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struct toedev *tdev;
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struct rtentry *rt;
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int error;
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/*
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* Look up the route used for the connection to
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* determine if it uses an interface capable of
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* offloading the connection.
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*/
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rt = rtalloc1(nam, 1 /*report*/, 0 /*ignflags*/);
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if (rt)
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RT_UNLOCK(rt);
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else
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return (EHOSTUNREACH);
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ifp = rt->rt_ifp;
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if ((ifp->if_capenable & IFCAP_TOE) == 0) {
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error = EINVAL;
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goto fail;
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}
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tdev = TOEDEV(ifp);
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if (tdev == NULL) {
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error = EPERM;
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goto fail;
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}
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if (tdev->tod_can_offload(tdev, so) == 0) {
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error = EPERM;
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goto fail;
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}
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return (tdev->tod_connect(tdev, so, rt, nam));
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fail:
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RTFREE(rt);
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return (error);
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}
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/*
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* This file contains code as a short-term staging area before it is moved in
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* to sys/netinet/tcp_offload.c
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*/
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void
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tcp_offload_twstart(struct tcpcb *tp)
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{
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INP_INFO_WLOCK(&tcbinfo);
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inp_wlock(tp->t_inpcb);
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tcp_twstart(tp);
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INP_INFO_WUNLOCK(&tcbinfo);
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}
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void
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tcp_offload_twstart_disconnect(struct tcpcb *tp)
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{
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struct socket *so;
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INP_INFO_WLOCK(&tcbinfo);
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inp_wlock(tp->t_inpcb);
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so = tp->t_inpcb->inp_socket;
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tcp_twstart(tp);
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if (so)
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soisdisconnected(so);
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INP_INFO_WUNLOCK(&tcbinfo);
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}
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struct tcpcb *
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tcp_offload_close(struct tcpcb *tp)
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{
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INP_INFO_WLOCK(&tcbinfo);
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INP_WLOCK(tp->t_inpcb);
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tp = tcp_close(tp);
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INP_INFO_WUNLOCK(&tcbinfo);
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if (tp)
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INP_WUNLOCK(tp->t_inpcb);
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return (tp);
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}
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struct tcpcb *
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tcp_offload_drop(struct tcpcb *tp, int error)
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{
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INP_INFO_WLOCK(&tcbinfo);
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INP_WLOCK(tp->t_inpcb);
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tp = tcp_drop(tp, error);
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INP_INFO_WUNLOCK(&tcbinfo);
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if (tp)
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INP_WUNLOCK(tp->t_inpcb);
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return (tp);
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}
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