[Midnightbsd-cvs] src [8967] trunk/sys/netinet/tcp_offload.c: sync with freebsd 9.2 release
laffer1 at midnightbsd.org
laffer1 at midnightbsd.org
Tue Sep 27 12:52:23 EDT 2016
Revision: 8967
http://svnweb.midnightbsd.org/src/?rev=8967
Author: laffer1
Date: 2016-09-27 12:52:23 -0400 (Tue, 27 Sep 2016)
Log Message:
-----------
sync with freebsd 9.2 release
Modified Paths:
--------------
trunk/sys/netinet/tcp_offload.c
Modified: trunk/sys/netinet/tcp_offload.c
===================================================================
--- trunk/sys/netinet/tcp_offload.c 2016-09-27 16:49:45 UTC (rev 8966)
+++ trunk/sys/netinet/tcp_offload.c 2016-09-27 16:52:23 UTC (rev 8967)
@@ -1,145 +1,176 @@
/*-
- * Copyright (c) 2007, Chelsio Inc.
+ * Copyright (c) 2012 Chelsio Communications, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
*
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * 2. Neither the name of the Chelsio Corporation nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
*/
#include <sys/cdefs.h>
-__MBSDID("$MidnightBSD$");
+__FBSDID("$FreeBSD: release/9.2.0/sys/netinet/tcp_offload.c 252555 2013-07-03 09:25:29Z np $");
+#include "opt_inet.h"
+
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/types.h>
-#include <sys/malloc.h>
-#include <sys/kernel.h>
-#include <sys/sysctl.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
-
+#include <sys/sockopt.h>
#include <net/if.h>
-#include <net/if_types.h>
-#include <net/if_var.h>
#include <net/route.h>
-#include <net/vnet.h>
-
#include <netinet/in.h>
-#include <netinet/in_systm.h>
#include <netinet/in_pcb.h>
#include <netinet/tcp.h>
#include <netinet/tcp_var.h>
#include <netinet/tcp_offload.h>
-#include <netinet/toedev.h>
+#define TCPOUTFLAGS
+#include <netinet/tcp_fsm.h>
+#include <netinet/toecore.h>
-uint32_t toedev_registration_count;
+int registered_toedevs;
+/*
+ * Provide an opportunity for a TOE driver to offload.
+ */
int
tcp_offload_connect(struct socket *so, struct sockaddr *nam)
{
struct ifnet *ifp;
- struct toedev *tdev;
+ struct toedev *tod;
struct rtentry *rt;
- int error;
+ int error = EOPNOTSUPP;
- if (toedev_registration_count == 0)
- return (EINVAL);
-
- /*
- * Look up the route used for the connection to
- * determine if it uses an interface capable of
- * offloading the connection.
- */
- rt = rtalloc1(nam, 0 /*report*/, 0 /*ignflags*/);
- if (rt)
+ INP_WLOCK_ASSERT(sotoinpcb(so));
+ KASSERT(nam->sa_family == AF_INET || nam->sa_family == AF_INET6,
+ ("%s: called with sa_family %d", __func__, nam->sa_family));
+
+ if (registered_toedevs == 0)
+ return (error);
+
+ rt = rtalloc1(nam, 0, 0);
+ if (rt)
RT_UNLOCK(rt);
- else
+ else
return (EHOSTUNREACH);
ifp = rt->rt_ifp;
- if ((ifp->if_capenable & IFCAP_TOE) == 0) {
- error = EINVAL;
- goto fail;
- }
-
- tdev = TOEDEV(ifp);
- if (tdev == NULL) {
- error = EPERM;
- goto fail;
- }
-
- if (tdev->tod_can_offload(tdev, so) == 0) {
- error = EPERM;
- goto fail;
- }
-
- return (tdev->tod_connect(tdev, so, rt, nam));
-fail:
+
+ if (nam->sa_family == AF_INET && !(ifp->if_capenable & IFCAP_TOE4))
+ goto done;
+ if (nam->sa_family == AF_INET6 && !(ifp->if_capenable & IFCAP_TOE6))
+ goto done;
+
+ tod = TOEDEV(ifp);
+ if (tod != NULL)
+ error = tod->tod_connect(tod, so, rt, nam);
+done:
RTFREE(rt);
return (error);
}
+void
+tcp_offload_listen_start(struct tcpcb *tp)
+{
-/*
- * This file contains code as a short-term staging area before it is moved in
- * to sys/netinet/tcp_offload.c
- */
+ INP_WLOCK_ASSERT(tp->t_inpcb);
+ EVENTHANDLER_INVOKE(tcp_offload_listen_start, tp);
+}
+
void
-tcp_offload_twstart(struct tcpcb *tp)
+tcp_offload_listen_stop(struct tcpcb *tp)
{
- INP_INFO_WLOCK(&V_tcbinfo);
- INP_WLOCK(tp->t_inpcb);
- tcp_twstart(tp);
- INP_INFO_WUNLOCK(&V_tcbinfo);
+ INP_WLOCK_ASSERT(tp->t_inpcb);
+
+ EVENTHANDLER_INVOKE(tcp_offload_listen_stop, tp);
}
-struct tcpcb *
-tcp_offload_close(struct tcpcb *tp)
+void
+tcp_offload_input(struct tcpcb *tp, struct mbuf *m)
{
+ struct toedev *tod = tp->tod;
- INP_INFO_WLOCK(&V_tcbinfo);
- INP_WLOCK(tp->t_inpcb);
- tp = tcp_close(tp);
- INP_INFO_WUNLOCK(&V_tcbinfo);
- if (tp)
- INP_WUNLOCK(tp->t_inpcb);
+ KASSERT(tod != NULL, ("%s: tp->tod is NULL, tp %p", __func__, tp));
+ INP_WLOCK_ASSERT(tp->t_inpcb);
- return (tp);
+ tod->tod_input(tod, tp, m);
}
-struct tcpcb *
-tcp_offload_drop(struct tcpcb *tp, int error)
+int
+tcp_offload_output(struct tcpcb *tp)
{
+ struct toedev *tod = tp->tod;
+ int error, flags;
- INP_INFO_WLOCK(&V_tcbinfo);
- INP_WLOCK(tp->t_inpcb);
- tp = tcp_drop(tp, error);
- INP_INFO_WUNLOCK(&V_tcbinfo);
- if (tp)
- INP_WUNLOCK(tp->t_inpcb);
+ KASSERT(tod != NULL, ("%s: tp->tod is NULL, tp %p", __func__, tp));
+ INP_WLOCK_ASSERT(tp->t_inpcb);
- return (tp);
+ flags = tcp_outflags[tp->t_state];
+
+ if (flags & TH_RST) {
+ /* XXX: avoid repeated calls like we do for FIN */
+ error = tod->tod_send_rst(tod, tp);
+ } else if ((flags & TH_FIN || tp->t_flags & TF_NEEDFIN) &&
+ (tp->t_flags & TF_SENTFIN) == 0) {
+ error = tod->tod_send_fin(tod, tp);
+ if (error == 0)
+ tp->t_flags |= TF_SENTFIN;
+ } else
+ error = tod->tod_output(tod, tp);
+
+ return (error);
}
+void
+tcp_offload_rcvd(struct tcpcb *tp)
+{
+ struct toedev *tod = tp->tod;
+
+ KASSERT(tod != NULL, ("%s: tp->tod is NULL, tp %p", __func__, tp));
+ INP_WLOCK_ASSERT(tp->t_inpcb);
+
+ tod->tod_rcvd(tod, tp);
+}
+
+void
+tcp_offload_ctloutput(struct tcpcb *tp, int sopt_dir, int sopt_name)
+{
+ struct toedev *tod = tp->tod;
+
+ KASSERT(tod != NULL, ("%s: tp->tod is NULL, tp %p", __func__, tp));
+ INP_WLOCK_ASSERT(tp->t_inpcb);
+
+ tod->tod_ctloutput(tod, tp, sopt_dir, sopt_name);
+}
+
+void
+tcp_offload_detach(struct tcpcb *tp)
+{
+ struct toedev *tod = tp->tod;
+
+ KASSERT(tod != NULL, ("%s: tp->tod is NULL, tp %p", __func__, tp));
+ INP_WLOCK_ASSERT(tp->t_inpcb);
+
+ tod->tod_pcb_detach(tod, tp);
+}
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