76039bc84f
to this event, adding if_var.h to files that do need it. Also, include all includes that now are included due to implicit pollution via if_var.h Sponsored by: Netflix Sponsored by: Nginx, Inc.
178 lines
4.4 KiB
C
178 lines
4.4 KiB
C
/*-
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* Copyright (c) 2012 Chelsio Communications, 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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* 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 AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* 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 "opt_inet.h"
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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/mbuf.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/sockopt.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/route.h>
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#include <netinet/in.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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#define TCPOUTFLAGS
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#include <netinet/tcp_fsm.h>
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#include <netinet/toecore.h>
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int registered_toedevs;
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/*
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* Provide an opportunity for a TOE driver to offload.
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*/
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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 *tod;
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struct rtentry *rt;
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int error = EOPNOTSUPP;
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INP_WLOCK_ASSERT(sotoinpcb(so));
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KASSERT(nam->sa_family == AF_INET || nam->sa_family == AF_INET6,
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("%s: called with sa_family %d", __func__, nam->sa_family));
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if (registered_toedevs == 0)
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return (error);
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rt = rtalloc1(nam, 0, 0);
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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 (nam->sa_family == AF_INET && !(ifp->if_capenable & IFCAP_TOE4))
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goto done;
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if (nam->sa_family == AF_INET6 && !(ifp->if_capenable & IFCAP_TOE6))
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goto done;
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tod = TOEDEV(ifp);
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if (tod != NULL)
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error = tod->tod_connect(tod, so, rt, nam);
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done:
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RTFREE(rt);
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return (error);
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}
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void
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tcp_offload_listen_start(struct tcpcb *tp)
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{
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INP_WLOCK_ASSERT(tp->t_inpcb);
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EVENTHANDLER_INVOKE(tcp_offload_listen_start, tp);
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}
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void
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tcp_offload_listen_stop(struct tcpcb *tp)
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{
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INP_WLOCK_ASSERT(tp->t_inpcb);
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EVENTHANDLER_INVOKE(tcp_offload_listen_stop, tp);
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}
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void
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tcp_offload_input(struct tcpcb *tp, struct mbuf *m)
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{
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struct toedev *tod = tp->tod;
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KASSERT(tod != NULL, ("%s: tp->tod is NULL, tp %p", __func__, tp));
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INP_WLOCK_ASSERT(tp->t_inpcb);
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tod->tod_input(tod, tp, m);
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}
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int
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tcp_offload_output(struct tcpcb *tp)
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{
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struct toedev *tod = tp->tod;
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int error, flags;
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KASSERT(tod != NULL, ("%s: tp->tod is NULL, tp %p", __func__, tp));
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INP_WLOCK_ASSERT(tp->t_inpcb);
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flags = tcp_outflags[tp->t_state];
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if (flags & TH_RST) {
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/* XXX: avoid repeated calls like we do for FIN */
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error = tod->tod_send_rst(tod, tp);
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} else if ((flags & TH_FIN || tp->t_flags & TF_NEEDFIN) &&
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(tp->t_flags & TF_SENTFIN) == 0) {
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error = tod->tod_send_fin(tod, tp);
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if (error == 0)
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tp->t_flags |= TF_SENTFIN;
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} else
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error = tod->tod_output(tod, tp);
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return (error);
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}
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void
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tcp_offload_rcvd(struct tcpcb *tp)
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{
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struct toedev *tod = tp->tod;
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KASSERT(tod != NULL, ("%s: tp->tod is NULL, tp %p", __func__, tp));
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INP_WLOCK_ASSERT(tp->t_inpcb);
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tod->tod_rcvd(tod, tp);
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}
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void
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tcp_offload_ctloutput(struct tcpcb *tp, int sopt_dir, int sopt_name)
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{
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struct toedev *tod = tp->tod;
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KASSERT(tod != NULL, ("%s: tp->tod is NULL, tp %p", __func__, tp));
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INP_WLOCK_ASSERT(tp->t_inpcb);
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tod->tod_ctloutput(tod, tp, sopt_dir, sopt_name);
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}
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void
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tcp_offload_detach(struct tcpcb *tp)
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{
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struct toedev *tod = tp->tod;
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KASSERT(tod != NULL, ("%s: tp->tod is NULL, tp %p", __func__, tp));
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INP_WLOCK_ASSERT(tp->t_inpcb);
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tod->tod_pcb_detach(tod, tp);
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}
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