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530c006014
vnet.h, we now use jails (rather than vimages) as the abstraction for virtualization management, and what remained was specific to virtual network stacks. Minor cleanups are done in the process, and comments updated to reflect these changes. Reviewed by: bz Approved by: re (vimage blanket)
146 lines
3.4 KiB
C
146 lines
3.4 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 <net/route.h>
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#include <net/vnet.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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uint32_t toedev_registration_count;
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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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if (toedev_registration_count == 0)
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return (EINVAL);
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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, 0 /*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(&V_tcbinfo);
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INP_WLOCK(tp->t_inpcb);
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tcp_twstart(tp);
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INP_INFO_WUNLOCK(&V_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(&V_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(&V_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(&V_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(&V_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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