freebsd-nq/sys/dev/cxgbe/tom/t4_connect.c
Alexander V. Chernikov 8d6708ba80 Convert TOE routing lookups to the new routing KPI.
Reviewed by:	np
Differential Revision:	https://reviews.freebsd.org/D24388
2020-04-22 07:53:43 +00:00

407 lines
11 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2012 Chelsio Communications, Inc.
* All rights reserved.
* Written by: Navdeep Parhar <np@FreeBSD.org>
*
* Redistribution and use in source and binary forms, with or without
* 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.
*
* 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 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>
__FBSDID("$FreeBSD$");
#include "opt_inet.h"
#include "opt_inet6.h"
#ifdef TCP_OFFLOAD
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/ktr.h>
#include <sys/module.h>
#include <sys/protosw.h>
#include <sys/domain.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/sysctl.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_types.h>
#include <net/if_vlan_var.h>
#include <net/route.h>
#include <net/route/nhop.h>
#include <netinet/in.h>
#include <netinet/in_pcb.h>
#include <netinet/ip.h>
#define TCPSTATES
#include <netinet/tcp_fsm.h>
#include <netinet/tcp_var.h>
#include <netinet/toecore.h>
#include <netinet/cc/cc.h>
#include "common/common.h"
#include "common/t4_msg.h"
#include "common/t4_regs.h"
#include "common/t4_regs_values.h"
#include "t4_clip.h"
#include "tom/t4_tom_l2t.h"
#include "tom/t4_tom.h"
/*
* Active open succeeded.
*/
static int
do_act_establish(struct sge_iq *iq, const struct rss_header *rss,
struct mbuf *m)
{
struct adapter *sc = iq->adapter;
const struct cpl_act_establish *cpl = (const void *)(rss + 1);
u_int tid = GET_TID(cpl);
u_int atid = G_TID_TID(ntohl(cpl->tos_atid));
struct toepcb *toep = lookup_atid(sc, atid);
struct inpcb *inp = toep->inp;
KASSERT(m == NULL, ("%s: wasn't expecting payload", __func__));
KASSERT(toep->tid == atid, ("%s: toep tid/atid mismatch", __func__));
CTR3(KTR_CXGBE, "%s: atid %u, tid %u", __func__, atid, tid);
free_atid(sc, atid);
CURVNET_SET(toep->vnet);
INP_WLOCK(inp);
toep->tid = tid;
insert_tid(sc, tid, toep, inp->inp_vflag & INP_IPV6 ? 2 : 1);
if (inp->inp_flags & INP_DROPPED) {
/* socket closed by the kernel before hw told us it connected */
send_flowc_wr(toep, NULL);
send_reset(sc, toep, be32toh(cpl->snd_isn));
goto done;
}
make_established(toep, be32toh(cpl->snd_isn) - 1,
be32toh(cpl->rcv_isn) - 1, cpl->tcp_opt);
inp->inp_flowtype = M_HASHTYPE_OPAQUE;
inp->inp_flowid = tid;
if (ulp_mode(toep) == ULP_MODE_TLS)
tls_establish(toep);
done:
INP_WUNLOCK(inp);
CURVNET_RESTORE();
return (0);
}
void
act_open_failure_cleanup(struct adapter *sc, u_int atid, u_int status)
{
struct toepcb *toep = lookup_atid(sc, atid);
struct inpcb *inp = toep->inp;
struct toedev *tod = &toep->td->tod;
struct epoch_tracker et;
free_atid(sc, atid);
toep->tid = -1;
CURVNET_SET(toep->vnet);
if (status != EAGAIN)
NET_EPOCH_ENTER(et);
INP_WLOCK(inp);
toe_connect_failed(tod, inp, status);
final_cpl_received(toep); /* unlocks inp */
if (status != EAGAIN)
NET_EPOCH_EXIT(et);
CURVNET_RESTORE();
}
/*
* Active open failed.
*/
static int
do_act_open_rpl(struct sge_iq *iq, const struct rss_header *rss,
struct mbuf *m)
{
struct adapter *sc = iq->adapter;
const struct cpl_act_open_rpl *cpl = (const void *)(rss + 1);
u_int atid = G_TID_TID(G_AOPEN_ATID(be32toh(cpl->atid_status)));
u_int status = G_AOPEN_STATUS(be32toh(cpl->atid_status));
struct toepcb *toep = lookup_atid(sc, atid);
int rc;
KASSERT(m == NULL, ("%s: wasn't expecting payload", __func__));
KASSERT(toep->tid == atid, ("%s: toep tid/atid mismatch", __func__));
CTR3(KTR_CXGBE, "%s: atid %u, status %u ", __func__, atid, status);
/* Ignore negative advice */
if (negative_advice(status))
return (0);
if (status && act_open_has_tid(status))
release_tid(sc, GET_TID(cpl), toep->ctrlq);
rc = act_open_rpl_status_to_errno(status);
act_open_failure_cleanup(sc, atid, rc);
return (0);
}
void
t4_init_connect_cpl_handlers(void)
{
t4_register_cpl_handler(CPL_ACT_ESTABLISH, do_act_establish);
t4_register_shared_cpl_handler(CPL_ACT_OPEN_RPL, do_act_open_rpl,
CPL_COOKIE_TOM);
}
void
t4_uninit_connect_cpl_handlers(void)
{
t4_register_cpl_handler(CPL_ACT_ESTABLISH, NULL);
t4_register_shared_cpl_handler(CPL_ACT_OPEN_RPL, NULL, CPL_COOKIE_TOM);
}
#define DONT_OFFLOAD_ACTIVE_OPEN(x) do { \
reason = __LINE__; \
rc = (x); \
goto failed; \
} while (0)
static inline int
act_open_cpl_size(struct adapter *sc, int isipv6)
{
int idx;
static const int sz_table[3][2] = {
{
sizeof (struct cpl_act_open_req),
sizeof (struct cpl_act_open_req6)
},
{
sizeof (struct cpl_t5_act_open_req),
sizeof (struct cpl_t5_act_open_req6)
},
{
sizeof (struct cpl_t6_act_open_req),
sizeof (struct cpl_t6_act_open_req6)
},
};
MPASS(chip_id(sc) >= CHELSIO_T4);
idx = min(chip_id(sc) - CHELSIO_T4, 2);
return (sz_table[idx][!!isipv6]);
}
/*
* active open (soconnect).
*
* State of affairs on entry:
* soisconnecting (so_state |= SS_ISCONNECTING)
* tcbinfo not locked (This has changed - used to be WLOCKed)
* inp WLOCKed
* tp->t_state = TCPS_SYN_SENT
* rtalloc1, RT_UNLOCK on rt.
*/
int
t4_connect(struct toedev *tod, struct socket *so, struct nhop_object *nh,
struct sockaddr *nam)
{
struct adapter *sc = tod->tod_softc;
struct toepcb *toep = NULL;
struct wrqe *wr = NULL;
struct ifnet *rt_ifp = nh->nh_ifp;
struct vi_info *vi;
int qid_atid, rc, isipv6;
struct inpcb *inp = sotoinpcb(so);
struct tcpcb *tp = intotcpcb(inp);
int reason;
struct offload_settings settings;
struct epoch_tracker et;
uint16_t vid = 0xfff, pcp = 0;
INP_WLOCK_ASSERT(inp);
KASSERT(nam->sa_family == AF_INET || nam->sa_family == AF_INET6,
("%s: dest addr %p has family %u", __func__, nam, nam->sa_family));
if (rt_ifp->if_type == IFT_ETHER)
vi = rt_ifp->if_softc;
else if (rt_ifp->if_type == IFT_L2VLAN) {
struct ifnet *ifp = VLAN_TRUNKDEV(rt_ifp);
vi = ifp->if_softc;
VLAN_TAG(rt_ifp, &vid);
VLAN_PCP(rt_ifp, &pcp);
} else if (rt_ifp->if_type == IFT_IEEE8023ADLAG)
DONT_OFFLOAD_ACTIVE_OPEN(ENOSYS); /* XXX: implement lagg+TOE */
else
DONT_OFFLOAD_ACTIVE_OPEN(ENOTSUP);
if (sc->flags & KERN_TLS_OK)
DONT_OFFLOAD_ACTIVE_OPEN(ENOTSUP);
rw_rlock(&sc->policy_lock);
settings = *lookup_offload_policy(sc, OPEN_TYPE_ACTIVE, NULL,
EVL_MAKETAG(vid, pcp, 0), inp);
rw_runlock(&sc->policy_lock);
if (!settings.offload)
DONT_OFFLOAD_ACTIVE_OPEN(EPERM);
toep = alloc_toepcb(vi, M_NOWAIT);
if (toep == NULL)
DONT_OFFLOAD_ACTIVE_OPEN(ENOMEM);
toep->tid = alloc_atid(sc, toep);
if (toep->tid < 0)
DONT_OFFLOAD_ACTIVE_OPEN(ENOMEM);
toep->l2te = t4_l2t_get(vi->pi, rt_ifp,
nh->nh_flags & NHF_GATEWAY ? &nh->gw_sa : nam);
if (toep->l2te == NULL)
DONT_OFFLOAD_ACTIVE_OPEN(ENOMEM);
toep->vnet = so->so_vnet;
init_conn_params(vi, &settings, &inp->inp_inc, so, NULL,
toep->l2te->idx, &toep->params);
init_toepcb(vi, toep);
isipv6 = nam->sa_family == AF_INET6;
wr = alloc_wrqe(act_open_cpl_size(sc, isipv6), toep->ctrlq);
if (wr == NULL)
DONT_OFFLOAD_ACTIVE_OPEN(ENOMEM);
qid_atid = V_TID_QID(toep->ofld_rxq->iq.abs_id) | V_TID_TID(toep->tid) |
V_TID_COOKIE(CPL_COOKIE_TOM);
if (isipv6) {
struct cpl_act_open_req6 *cpl = wrtod(wr);
struct cpl_t5_act_open_req6 *cpl5 = (void *)cpl;
struct cpl_t6_act_open_req6 *cpl6 = (void *)cpl;
if ((inp->inp_vflag & INP_IPV6) == 0)
DONT_OFFLOAD_ACTIVE_OPEN(ENOTSUP);
toep->ce = t4_hold_lip(sc, &inp->in6p_laddr, NULL);
if (toep->ce == NULL)
DONT_OFFLOAD_ACTIVE_OPEN(ENOENT);
switch (chip_id(sc)) {
case CHELSIO_T4:
INIT_TP_WR(cpl, 0);
cpl->params = select_ntuple(vi, toep->l2te);
break;
case CHELSIO_T5:
INIT_TP_WR(cpl5, 0);
cpl5->iss = htobe32(tp->iss);
cpl5->params = select_ntuple(vi, toep->l2te);
break;
case CHELSIO_T6:
default:
INIT_TP_WR(cpl6, 0);
cpl6->iss = htobe32(tp->iss);
cpl6->params = select_ntuple(vi, toep->l2te);
break;
}
OPCODE_TID(cpl) = htobe32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6,
qid_atid));
cpl->local_port = inp->inp_lport;
cpl->local_ip_hi = *(uint64_t *)&inp->in6p_laddr.s6_addr[0];
cpl->local_ip_lo = *(uint64_t *)&inp->in6p_laddr.s6_addr[8];
cpl->peer_port = inp->inp_fport;
cpl->peer_ip_hi = *(uint64_t *)&inp->in6p_faddr.s6_addr[0];
cpl->peer_ip_lo = *(uint64_t *)&inp->in6p_faddr.s6_addr[8];
cpl->opt0 = calc_options0(vi, &toep->params);
cpl->opt2 = calc_options2(vi, &toep->params);
CTR6(KTR_CXGBE,
"%s: atid %u, toep %p, inp %p, opt0 %#016lx, opt2 %#08x",
__func__, toep->tid, toep, inp, be64toh(cpl->opt0),
be32toh(cpl->opt2));
} else {
struct cpl_act_open_req *cpl = wrtod(wr);
struct cpl_t5_act_open_req *cpl5 = (void *)cpl;
struct cpl_t6_act_open_req *cpl6 = (void *)cpl;
switch (chip_id(sc)) {
case CHELSIO_T4:
INIT_TP_WR(cpl, 0);
cpl->params = select_ntuple(vi, toep->l2te);
break;
case CHELSIO_T5:
INIT_TP_WR(cpl5, 0);
cpl5->iss = htobe32(tp->iss);
cpl5->params = select_ntuple(vi, toep->l2te);
break;
case CHELSIO_T6:
default:
INIT_TP_WR(cpl6, 0);
cpl6->iss = htobe32(tp->iss);
cpl6->params = select_ntuple(vi, toep->l2te);
break;
}
OPCODE_TID(cpl) = htobe32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
qid_atid));
inp_4tuple_get(inp, &cpl->local_ip, &cpl->local_port,
&cpl->peer_ip, &cpl->peer_port);
cpl->opt0 = calc_options0(vi, &toep->params);
cpl->opt2 = calc_options2(vi, &toep->params);
CTR6(KTR_CXGBE,
"%s: atid %u, toep %p, inp %p, opt0 %#016lx, opt2 %#08x",
__func__, toep->tid, toep, inp, be64toh(cpl->opt0),
be32toh(cpl->opt2));
}
offload_socket(so, toep);
NET_EPOCH_ENTER(et);
rc = t4_l2t_send(sc, wr, toep->l2te);
NET_EPOCH_EXIT(et);
if (rc == 0) {
toep->flags |= TPF_CPL_PENDING;
return (0);
}
undo_offload_socket(so);
reason = __LINE__;
failed:
CTR3(KTR_CXGBE, "%s: not offloading (%d), rc %d", __func__, reason, rc);
if (wr)
free_wrqe(wr);
if (toep) {
if (toep->tid >= 0)
free_atid(sc, toep->tid);
if (toep->l2te)
t4_l2t_release(toep->l2te);
if (toep->ce)
t4_release_lip(sc, toep->ce);
free_toepcb(toep);
}
return (rc);
}
#endif