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freebsd-dev/sys/dev/hyperv/netvsc/hn_rndis.c
Sepherosa Ziehau 6f12c42e8b hyperv/hn: Workaround erroneous hash type observed on WS2016 for VF. 
The background was described in r324489.

MFC after:	3 days
Sponsored by:	Microsoft
2017-10-11 05:15:49 +00:00

1037 lines
28 KiB
C
Raw Blame History

/*-
* Copyright (c) 2009-2012,2016-2017 Microsoft Corp.
* Copyright (c) 2010-2012 Citrix Inc.
* Copyright (c) 2012 NetApp 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:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, 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 ``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 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_inet6.h"
#include "opt_inet.h"
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/systm.h>
#include <sys/taskqueue.h>
#include <machine/atomic.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_media.h>
#include <net/rndis.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/tcp_lro.h>
#include <dev/hyperv/include/hyperv.h>
#include <dev/hyperv/include/hyperv_busdma.h>
#include <dev/hyperv/include/vmbus.h>
#include <dev/hyperv/include/vmbus_xact.h>
#include <dev/hyperv/netvsc/ndis.h>
#include <dev/hyperv/netvsc/if_hnreg.h>
#include <dev/hyperv/netvsc/if_hnvar.h>
#include <dev/hyperv/netvsc/hn_nvs.h>
#include <dev/hyperv/netvsc/hn_rndis.h>
#define HN_RNDIS_RID_COMPAT_MASK 0xffff
#define HN_RNDIS_RID_COMPAT_MAX HN_RNDIS_RID_COMPAT_MASK
#define HN_RNDIS_XFER_SIZE 2048
#define HN_NDIS_TXCSUM_CAP_IP4 \
(NDIS_TXCSUM_CAP_IP4 | NDIS_TXCSUM_CAP_IP4OPT)
#define HN_NDIS_TXCSUM_CAP_TCP4 \
(NDIS_TXCSUM_CAP_TCP4 | NDIS_TXCSUM_CAP_TCP4OPT)
#define HN_NDIS_TXCSUM_CAP_TCP6 \
(NDIS_TXCSUM_CAP_TCP6 | NDIS_TXCSUM_CAP_TCP6OPT | \
NDIS_TXCSUM_CAP_IP6EXT)
#define HN_NDIS_TXCSUM_CAP_UDP6 \
(NDIS_TXCSUM_CAP_UDP6 | NDIS_TXCSUM_CAP_IP6EXT)
#define HN_NDIS_LSOV2_CAP_IP6 \
(NDIS_LSOV2_CAP_IP6EXT | NDIS_LSOV2_CAP_TCP6OPT)
static const void *hn_rndis_xact_exec1(struct hn_softc *,
struct vmbus_xact *, size_t,
struct hn_nvs_sendctx *, size_t *);
static const void *hn_rndis_xact_execute(struct hn_softc *,
struct vmbus_xact *, uint32_t, size_t, size_t *,
uint32_t);
static int hn_rndis_query(struct hn_softc *, uint32_t,
const void *, size_t, void *, size_t *);
static int hn_rndis_query2(struct hn_softc *, uint32_t,
const void *, size_t, void *, size_t *, size_t);
static int hn_rndis_set(struct hn_softc *, uint32_t,
const void *, size_t);
static int hn_rndis_init(struct hn_softc *);
static int hn_rndis_halt(struct hn_softc *);
static int hn_rndis_conf_offload(struct hn_softc *, int);
static int hn_rndis_query_hwcaps(struct hn_softc *,
struct ndis_offload *);
static __inline uint32_t
hn_rndis_rid(struct hn_softc *sc)
{
uint32_t rid;
again:
rid = atomic_fetchadd_int(&sc->hn_rndis_rid, 1);
if (rid == 0)
goto again;
/* Use upper 16 bits for non-compat RNDIS messages. */
return ((rid & 0xffff) << 16);
}
void
hn_rndis_rx_ctrl(struct hn_softc *sc, const void *data, int dlen)
{
const struct rndis_comp_hdr *comp;
const struct rndis_msghdr *hdr;
KASSERT(dlen >= sizeof(*hdr), ("invalid RNDIS msg\n"));
hdr = data;
switch (hdr->rm_type) {
case REMOTE_NDIS_INITIALIZE_CMPLT:
case REMOTE_NDIS_QUERY_CMPLT:
case REMOTE_NDIS_SET_CMPLT:
case REMOTE_NDIS_KEEPALIVE_CMPLT: /* unused */
if (dlen < sizeof(*comp)) {
if_printf(sc->hn_ifp, "invalid RNDIS cmplt\n");
return;
}
comp = data;
KASSERT(comp->rm_rid > HN_RNDIS_RID_COMPAT_MAX,
("invalid RNDIS rid 0x%08x\n", comp->rm_rid));
vmbus_xact_ctx_wakeup(sc->hn_xact, comp, dlen);
break;
case REMOTE_NDIS_RESET_CMPLT:
/*
* Reset completed, no rid.
*
* NOTE:
* RESET is not issued by hn(4), so this message should
* _not_ be observed.
*/
if_printf(sc->hn_ifp, "RESET cmplt received\n");
break;
default:
if_printf(sc->hn_ifp, "unknown RNDIS msg 0x%x\n",
hdr->rm_type);
break;
}
}
int
hn_rndis_get_eaddr(struct hn_softc *sc, uint8_t *eaddr)
{
size_t eaddr_len;
int error;
eaddr_len = ETHER_ADDR_LEN;
error = hn_rndis_query(sc, OID_802_3_PERMANENT_ADDRESS, NULL, 0,
eaddr, &eaddr_len);
if (error)
return (error);
if (eaddr_len != ETHER_ADDR_LEN) {
if_printf(sc->hn_ifp, "invalid eaddr len %zu\n", eaddr_len);
return (EINVAL);
}
return (0);
}
int
hn_rndis_get_linkstatus(struct hn_softc *sc, uint32_t *link_status)
{
size_t size;
int error;
size = sizeof(*link_status);
error = hn_rndis_query(sc, OID_GEN_MEDIA_CONNECT_STATUS, NULL, 0,
link_status, &size);
if (error)
return (error);
if (size != sizeof(uint32_t)) {
if_printf(sc->hn_ifp, "invalid link status len %zu\n", size);
return (EINVAL);
}
return (0);
}
int
hn_rndis_get_mtu(struct hn_softc *sc, uint32_t *mtu)
{
size_t size;
int error;
size = sizeof(*mtu);
error = hn_rndis_query(sc, OID_GEN_MAXIMUM_FRAME_SIZE, NULL, 0,
mtu, &size);
if (error)
return (error);
if (size != sizeof(uint32_t)) {
if_printf(sc->hn_ifp, "invalid mtu len %zu\n", size);
return (EINVAL);
}
return (0);
}
static const void *
hn_rndis_xact_exec1(struct hn_softc *sc, struct vmbus_xact *xact, size_t reqlen,
struct hn_nvs_sendctx *sndc, size_t *comp_len)
{
struct vmbus_gpa gpa[HN_XACT_REQ_PGCNT];
int gpa_cnt, error;
bus_addr_t paddr;
KASSERT(reqlen <= HN_XACT_REQ_SIZE && reqlen > 0,
("invalid request length %zu", reqlen));
/*
* Setup the SG list.
*/
paddr = vmbus_xact_req_paddr(xact);
KASSERT((paddr & PAGE_MASK) == 0,
("vmbus xact request is not page aligned 0x%jx", (uintmax_t)paddr));
for (gpa_cnt = 0; gpa_cnt < HN_XACT_REQ_PGCNT; ++gpa_cnt) {
int len = PAGE_SIZE;
if (reqlen == 0)
break;
if (reqlen < len)
len = reqlen;
gpa[gpa_cnt].gpa_page = atop(paddr) + gpa_cnt;
gpa[gpa_cnt].gpa_len = len;
gpa[gpa_cnt].gpa_ofs = 0;
reqlen -= len;
}
KASSERT(reqlen == 0, ("still have %zu request data left", reqlen));
/*
* Send this RNDIS control message and wait for its completion
* message.
*/
vmbus_xact_activate(xact);
error = hn_nvs_send_rndis_ctrl(sc->hn_prichan, sndc, gpa, gpa_cnt);
if (error) {
vmbus_xact_deactivate(xact);
if_printf(sc->hn_ifp, "RNDIS ctrl send failed: %d\n", error);
return (NULL);
}
return (vmbus_chan_xact_wait(sc->hn_prichan, xact, comp_len,
HN_CAN_SLEEP(sc)));
}
static const void *
hn_rndis_xact_execute(struct hn_softc *sc, struct vmbus_xact *xact, uint32_t rid,
size_t reqlen, size_t *comp_len0, uint32_t comp_type)
{
const struct rndis_comp_hdr *comp;
size_t comp_len, min_complen = *comp_len0;
KASSERT(rid > HN_RNDIS_RID_COMPAT_MAX, ("invalid rid %u\n", rid));
KASSERT(min_complen >= sizeof(*comp),
("invalid minimum complete len %zu", min_complen));
/*
* Execute the xact setup by the caller.
*/
comp = hn_rndis_xact_exec1(sc, xact, reqlen, &hn_nvs_sendctx_none,
&comp_len);
if (comp == NULL)
return (NULL);
/*
* Check this RNDIS complete message.
*/
if (comp_len < min_complen) {
if (comp_len >= sizeof(*comp)) {
/* rm_status field is valid */
if_printf(sc->hn_ifp, "invalid RNDIS comp len %zu, "
"status 0x%08x\n", comp_len, comp->rm_status);
} else {
if_printf(sc->hn_ifp, "invalid RNDIS comp len %zu\n",
comp_len);
}
return (NULL);
}
if (comp->rm_len < min_complen) {
if_printf(sc->hn_ifp, "invalid RNDIS comp msglen %u\n",
comp->rm_len);
return (NULL);
}
if (comp->rm_type != comp_type) {
if_printf(sc->hn_ifp, "unexpected RNDIS comp 0x%08x, "
"expect 0x%08x\n", comp->rm_type, comp_type);
return (NULL);
}
if (comp->rm_rid != rid) {
if_printf(sc->hn_ifp, "RNDIS comp rid mismatch %u, "
"expect %u\n", comp->rm_rid, rid);
return (NULL);
}
/* All pass! */
*comp_len0 = comp_len;
return (comp);
}
static int
hn_rndis_query(struct hn_softc *sc, uint32_t oid,
const void *idata, size_t idlen, void *odata, size_t *odlen0)
{
return (hn_rndis_query2(sc, oid, idata, idlen, odata, odlen0, *odlen0));
}
static int
hn_rndis_query2(struct hn_softc *sc, uint32_t oid,
const void *idata, size_t idlen, void *odata, size_t *odlen0,
size_t min_odlen)
{
struct rndis_query_req *req;
const struct rndis_query_comp *comp;
struct vmbus_xact *xact;
size_t reqlen, odlen = *odlen0, comp_len;
int error, ofs;
uint32_t rid;
reqlen = sizeof(*req) + idlen;
xact = vmbus_xact_get(sc->hn_xact, reqlen);
if (xact == NULL) {
if_printf(sc->hn_ifp, "no xact for RNDIS query 0x%08x\n", oid);
return (ENXIO);
}
rid = hn_rndis_rid(sc);
req = vmbus_xact_req_data(xact);
req->rm_type = REMOTE_NDIS_QUERY_MSG;
req->rm_len = reqlen;
req->rm_rid = rid;
req->rm_oid = oid;
/*
* XXX
* This is _not_ RNDIS Spec conforming:
* "This MUST be set to 0 when there is no input data
* associated with the OID."
*
* If this field was set to 0 according to the RNDIS Spec,
* Hyper-V would set non-SUCCESS status in the query
* completion.
*/
req->rm_infobufoffset = RNDIS_QUERY_REQ_INFOBUFOFFSET;
if (idlen > 0) {
req->rm_infobuflen = idlen;
/* Input data immediately follows RNDIS query. */
memcpy(req + 1, idata, idlen);
}
comp_len = sizeof(*comp) + min_odlen;
comp = hn_rndis_xact_execute(sc, xact, rid, reqlen, &comp_len,
REMOTE_NDIS_QUERY_CMPLT);
if (comp == NULL) {
if_printf(sc->hn_ifp, "exec RNDIS query 0x%08x failed\n", oid);
error = EIO;
goto done;
}
if (comp->rm_status != RNDIS_STATUS_SUCCESS) {
if_printf(sc->hn_ifp, "RNDIS query 0x%08x failed: "
"status 0x%08x\n", oid, comp->rm_status);
error = EIO;
goto done;
}
if (comp->rm_infobuflen == 0 || comp->rm_infobufoffset == 0) {
/* No output data! */
if_printf(sc->hn_ifp, "RNDIS query 0x%08x, no data\n", oid);
*odlen0 = 0;
error = 0;
goto done;
}
/*
* Check output data length and offset.
*/
/* ofs is the offset from the beginning of comp. */
ofs = RNDIS_QUERY_COMP_INFOBUFOFFSET_ABS(comp->rm_infobufoffset);
if (ofs < sizeof(*comp) || ofs + comp->rm_infobuflen > comp_len) {
if_printf(sc->hn_ifp, "RNDIS query invalid comp ib off/len, "
"%u/%u\n", comp->rm_infobufoffset, comp->rm_infobuflen);
error = EINVAL;
goto done;
}
/*
* Save output data.
*/
if (comp->rm_infobuflen < odlen)
odlen = comp->rm_infobuflen;
memcpy(odata, ((const uint8_t *)comp) + ofs, odlen);
*odlen0 = odlen;
error = 0;
done:
vmbus_xact_put(xact);
return (error);
}
int
hn_rndis_query_rsscaps(struct hn_softc *sc, int *rxr_cnt0)
{
struct ndis_rss_caps in, caps;
size_t caps_len;
int error, indsz, rxr_cnt, hash_fnidx;
uint32_t hash_func = 0, hash_types = 0;
*rxr_cnt0 = 0;
if (sc->hn_ndis_ver < HN_NDIS_VERSION_6_20)
return (EOPNOTSUPP);
memset(&in, 0, sizeof(in));
in.ndis_hdr.ndis_type = NDIS_OBJTYPE_RSS_CAPS;
in.ndis_hdr.ndis_rev = NDIS_RSS_CAPS_REV_2;
in.ndis_hdr.ndis_size = NDIS_RSS_CAPS_SIZE;
caps_len = NDIS_RSS_CAPS_SIZE;
error = hn_rndis_query2(sc, OID_GEN_RECEIVE_SCALE_CAPABILITIES,
&in, NDIS_RSS_CAPS_SIZE, &caps, &caps_len, NDIS_RSS_CAPS_SIZE_6_0);
if (error)
return (error);
/*
* Preliminary verification.
*/
if (caps.ndis_hdr.ndis_type != NDIS_OBJTYPE_RSS_CAPS) {
if_printf(sc->hn_ifp, "invalid NDIS objtype 0x%02x\n",
caps.ndis_hdr.ndis_type);
return (EINVAL);
}
if (caps.ndis_hdr.ndis_rev < NDIS_RSS_CAPS_REV_1) {
if_printf(sc->hn_ifp, "invalid NDIS objrev 0x%02x\n",
caps.ndis_hdr.ndis_rev);
return (EINVAL);
}
if (caps.ndis_hdr.ndis_size > caps_len) {
if_printf(sc->hn_ifp, "invalid NDIS objsize %u, "
"data size %zu\n", caps.ndis_hdr.ndis_size, caps_len);
return (EINVAL);
} else if (caps.ndis_hdr.ndis_size < NDIS_RSS_CAPS_SIZE_6_0) {
if_printf(sc->hn_ifp, "invalid NDIS objsize %u\n",
caps.ndis_hdr.ndis_size);
return (EINVAL);
}
/*
* Save information for later RSS configuration.
*/
if (caps.ndis_nrxr == 0) {
if_printf(sc->hn_ifp, "0 RX rings!?\n");
return (EINVAL);
}
if (bootverbose)
if_printf(sc->hn_ifp, "%u RX rings\n", caps.ndis_nrxr);
rxr_cnt = caps.ndis_nrxr;
if (caps.ndis_hdr.ndis_size == NDIS_RSS_CAPS_SIZE &&
caps.ndis_hdr.ndis_rev >= NDIS_RSS_CAPS_REV_2) {
if (caps.ndis_nind > NDIS_HASH_INDCNT) {
if_printf(sc->hn_ifp,
"too many RSS indirect table entries %u\n",
caps.ndis_nind);
return (EOPNOTSUPP);
}
if (!powerof2(caps.ndis_nind)) {
if_printf(sc->hn_ifp, "RSS indirect table size is not "
"power-of-2 %u\n", caps.ndis_nind);
}
if (bootverbose) {
if_printf(sc->hn_ifp, "RSS indirect table size %u\n",
caps.ndis_nind);
}
indsz = caps.ndis_nind;
} else {
indsz = NDIS_HASH_INDCNT;
}
if (indsz < rxr_cnt) {
if_printf(sc->hn_ifp, "# of RX rings (%d) > "
"RSS indirect table size %d\n", rxr_cnt, indsz);
rxr_cnt = indsz;
}
/*
* NOTE:
* Toeplitz is at the lowest bit, and it is prefered; so ffs(),
* instead of fls(), is used here.
*/
hash_fnidx = ffs(caps.ndis_caps & NDIS_RSS_CAP_HASHFUNC_MASK);
if (hash_fnidx == 0) {
if_printf(sc->hn_ifp, "no hash functions, caps 0x%08x\n",
caps.ndis_caps);
return (EOPNOTSUPP);
}
hash_func = 1 << (hash_fnidx - 1); /* ffs is 1-based */
if (caps.ndis_caps & NDIS_RSS_CAP_IPV4)
hash_types |= NDIS_HASH_IPV4 | NDIS_HASH_TCP_IPV4;
if (caps.ndis_caps & NDIS_RSS_CAP_IPV6)
hash_types |= NDIS_HASH_IPV6 | NDIS_HASH_TCP_IPV6;
if (caps.ndis_caps & NDIS_RSS_CAP_IPV6_EX)
hash_types |= NDIS_HASH_IPV6_EX | NDIS_HASH_TCP_IPV6_EX;
if (hash_types == 0) {
if_printf(sc->hn_ifp, "no hash types, caps 0x%08x\n",
caps.ndis_caps);
return (EOPNOTSUPP);
}
if (bootverbose)
if_printf(sc->hn_ifp, "RSS caps %#x\n", caps.ndis_caps);
/* Commit! */
sc->hn_rss_ind_size = indsz;
sc->hn_rss_hcap = hash_func | hash_types;
if (sc->hn_caps & HN_CAP_UDPHASH) {
/* UDP 4-tuple hash is unconditionally enabled. */
sc->hn_rss_hcap |= NDIS_HASH_UDP_IPV4_X;
}
*rxr_cnt0 = rxr_cnt;
return (0);
}
static int
hn_rndis_set(struct hn_softc *sc, uint32_t oid, const void *data, size_t dlen)
{
struct rndis_set_req *req;
const struct rndis_set_comp *comp;
struct vmbus_xact *xact;
size_t reqlen, comp_len;
uint32_t rid;
int error;
KASSERT(dlen > 0, ("invalid dlen %zu", dlen));
reqlen = sizeof(*req) + dlen;
xact = vmbus_xact_get(sc->hn_xact, reqlen);
if (xact == NULL) {
if_printf(sc->hn_ifp, "no xact for RNDIS set 0x%08x\n", oid);
return (ENXIO);
}
rid = hn_rndis_rid(sc);
req = vmbus_xact_req_data(xact);
req->rm_type = REMOTE_NDIS_SET_MSG;
req->rm_len = reqlen;
req->rm_rid = rid;
req->rm_oid = oid;
req->rm_infobuflen = dlen;
req->rm_infobufoffset = RNDIS_SET_REQ_INFOBUFOFFSET;
/* Data immediately follows RNDIS set. */
memcpy(req + 1, data, dlen);
comp_len = sizeof(*comp);
comp = hn_rndis_xact_execute(sc, xact, rid, reqlen, &comp_len,
REMOTE_NDIS_SET_CMPLT);
if (comp == NULL) {
if_printf(sc->hn_ifp, "exec RNDIS set 0x%08x failed\n", oid);
error = EIO;
goto done;
}
if (comp->rm_status != RNDIS_STATUS_SUCCESS) {
if_printf(sc->hn_ifp, "RNDIS set 0x%08x failed: "
"status 0x%08x\n", oid, comp->rm_status);
error = EIO;
goto done;
}
error = 0;
done:
vmbus_xact_put(xact);
return (error);
}
static int
hn_rndis_conf_offload(struct hn_softc *sc, int mtu)
{
struct ndis_offload hwcaps;
struct ndis_offload_params params;
uint32_t caps = 0;
size_t paramsz;
int error, tso_maxsz, tso_minsg;
error = hn_rndis_query_hwcaps(sc, &hwcaps);
if (error) {
if_printf(sc->hn_ifp, "hwcaps query failed: %d\n", error);
return (error);
}
/* NOTE: 0 means "no change" */
memset(&params, 0, sizeof(params));
params.ndis_hdr.ndis_type = NDIS_OBJTYPE_DEFAULT;
if (sc->hn_ndis_ver < HN_NDIS_VERSION_6_30) {
params.ndis_hdr.ndis_rev = NDIS_OFFLOAD_PARAMS_REV_2;
paramsz = NDIS_OFFLOAD_PARAMS_SIZE_6_1;
} else {
params.ndis_hdr.ndis_rev = NDIS_OFFLOAD_PARAMS_REV_3;
paramsz = NDIS_OFFLOAD_PARAMS_SIZE;
}
params.ndis_hdr.ndis_size = paramsz;
/*
* TSO4/TSO6 setup.
*/
tso_maxsz = IP_MAXPACKET;
tso_minsg = 2;
if (hwcaps.ndis_lsov2.ndis_ip4_encap & NDIS_OFFLOAD_ENCAP_8023) {
caps |= HN_CAP_TSO4;
params.ndis_lsov2_ip4 = NDIS_OFFLOAD_LSOV2_ON;
if (hwcaps.ndis_lsov2.ndis_ip4_maxsz < tso_maxsz)
tso_maxsz = hwcaps.ndis_lsov2.ndis_ip4_maxsz;
if (hwcaps.ndis_lsov2.ndis_ip4_minsg > tso_minsg)
tso_minsg = hwcaps.ndis_lsov2.ndis_ip4_minsg;
}
if ((hwcaps.ndis_lsov2.ndis_ip6_encap & NDIS_OFFLOAD_ENCAP_8023) &&
(hwcaps.ndis_lsov2.ndis_ip6_opts & HN_NDIS_LSOV2_CAP_IP6) ==
HN_NDIS_LSOV2_CAP_IP6) {
caps |= HN_CAP_TSO6;
params.ndis_lsov2_ip6 = NDIS_OFFLOAD_LSOV2_ON;
if (hwcaps.ndis_lsov2.ndis_ip6_maxsz < tso_maxsz)
tso_maxsz = hwcaps.ndis_lsov2.ndis_ip6_maxsz;
if (hwcaps.ndis_lsov2.ndis_ip6_minsg > tso_minsg)
tso_minsg = hwcaps.ndis_lsov2.ndis_ip6_minsg;
}
sc->hn_ndis_tso_szmax = 0;
sc->hn_ndis_tso_sgmin = 0;
if (caps & (HN_CAP_TSO4 | HN_CAP_TSO6)) {
KASSERT(tso_maxsz <= IP_MAXPACKET,
("invalid NDIS TSO maxsz %d", tso_maxsz));
KASSERT(tso_minsg >= 2,
("invalid NDIS TSO minsg %d", tso_minsg));
if (tso_maxsz < tso_minsg * mtu) {
if_printf(sc->hn_ifp, "invalid NDIS TSO config: "
"maxsz %d, minsg %d, mtu %d; "
"disable TSO4 and TSO6\n",
tso_maxsz, tso_minsg, mtu);
caps &= ~(HN_CAP_TSO4 | HN_CAP_TSO6);
params.ndis_lsov2_ip4 = NDIS_OFFLOAD_LSOV2_OFF;
params.ndis_lsov2_ip6 = NDIS_OFFLOAD_LSOV2_OFF;
} else {
sc->hn_ndis_tso_szmax = tso_maxsz;
sc->hn_ndis_tso_sgmin = tso_minsg;
if (bootverbose) {
if_printf(sc->hn_ifp, "NDIS TSO "
"szmax %d sgmin %d\n",
sc->hn_ndis_tso_szmax,
sc->hn_ndis_tso_sgmin);
}
}
}
/* IPv4 checksum */
if ((hwcaps.ndis_csum.ndis_ip4_txcsum & HN_NDIS_TXCSUM_CAP_IP4) ==
HN_NDIS_TXCSUM_CAP_IP4) {
caps |= HN_CAP_IPCS;
params.ndis_ip4csum = NDIS_OFFLOAD_PARAM_TX;
}
if (hwcaps.ndis_csum.ndis_ip4_rxcsum & NDIS_RXCSUM_CAP_IP4) {
if (params.ndis_ip4csum == NDIS_OFFLOAD_PARAM_TX)
params.ndis_ip4csum = NDIS_OFFLOAD_PARAM_TXRX;
else
params.ndis_ip4csum = NDIS_OFFLOAD_PARAM_RX;
}
/* TCP4 checksum */
if ((hwcaps.ndis_csum.ndis_ip4_txcsum & HN_NDIS_TXCSUM_CAP_TCP4) ==
HN_NDIS_TXCSUM_CAP_TCP4) {
caps |= HN_CAP_TCP4CS;
params.ndis_tcp4csum = NDIS_OFFLOAD_PARAM_TX;
}
if (hwcaps.ndis_csum.ndis_ip4_rxcsum & NDIS_RXCSUM_CAP_TCP4) {
if (params.ndis_tcp4csum == NDIS_OFFLOAD_PARAM_TX)
params.ndis_tcp4csum = NDIS_OFFLOAD_PARAM_TXRX;
else
params.ndis_tcp4csum = NDIS_OFFLOAD_PARAM_RX;
}
/* UDP4 checksum */
if (hwcaps.ndis_csum.ndis_ip4_txcsum & NDIS_TXCSUM_CAP_UDP4) {
caps |= HN_CAP_UDP4CS;
params.ndis_udp4csum = NDIS_OFFLOAD_PARAM_TX;
}
if (hwcaps.ndis_csum.ndis_ip4_rxcsum & NDIS_RXCSUM_CAP_UDP4) {
if (params.ndis_udp4csum == NDIS_OFFLOAD_PARAM_TX)
params.ndis_udp4csum = NDIS_OFFLOAD_PARAM_TXRX;
else
params.ndis_udp4csum = NDIS_OFFLOAD_PARAM_RX;
}
/* TCP6 checksum */
if ((hwcaps.ndis_csum.ndis_ip6_txcsum & HN_NDIS_TXCSUM_CAP_TCP6) ==
HN_NDIS_TXCSUM_CAP_TCP6) {
caps |= HN_CAP_TCP6CS;
params.ndis_tcp6csum = NDIS_OFFLOAD_PARAM_TX;
}
if (hwcaps.ndis_csum.ndis_ip6_rxcsum & NDIS_RXCSUM_CAP_TCP6) {
if (params.ndis_tcp6csum == NDIS_OFFLOAD_PARAM_TX)
params.ndis_tcp6csum = NDIS_OFFLOAD_PARAM_TXRX;
else
params.ndis_tcp6csum = NDIS_OFFLOAD_PARAM_RX;
}
/* UDP6 checksum */
if ((hwcaps.ndis_csum.ndis_ip6_txcsum & HN_NDIS_TXCSUM_CAP_UDP6) ==
HN_NDIS_TXCSUM_CAP_UDP6) {
caps |= HN_CAP_UDP6CS;
params.ndis_udp6csum = NDIS_OFFLOAD_PARAM_TX;
}
if (hwcaps.ndis_csum.ndis_ip6_rxcsum & NDIS_RXCSUM_CAP_UDP6) {
if (params.ndis_udp6csum == NDIS_OFFLOAD_PARAM_TX)
params.ndis_udp6csum = NDIS_OFFLOAD_PARAM_TXRX;
else
params.ndis_udp6csum = NDIS_OFFLOAD_PARAM_RX;
}
if (bootverbose) {
if_printf(sc->hn_ifp, "offload csum: "
"ip4 %u, tcp4 %u, udp4 %u, tcp6 %u, udp6 %u\n",
params.ndis_ip4csum,
params.ndis_tcp4csum,
params.ndis_udp4csum,
params.ndis_tcp6csum,
params.ndis_udp6csum);
if_printf(sc->hn_ifp, "offload lsov2: ip4 %u, ip6 %u\n",
params.ndis_lsov2_ip4,
params.ndis_lsov2_ip6);
}
error = hn_rndis_set(sc, OID_TCP_OFFLOAD_PARAMETERS, &params, paramsz);
if (error) {
if_printf(sc->hn_ifp, "offload config failed: %d\n", error);
return (error);
}
if (bootverbose)
if_printf(sc->hn_ifp, "offload config done\n");
sc->hn_caps |= caps;
return (0);
}
int
hn_rndis_conf_rss(struct hn_softc *sc, uint16_t flags)
{
struct ndis_rssprm_toeplitz *rss = &sc->hn_rss;
struct ndis_rss_params *prm = &rss->rss_params;
int error, rss_size;
/*
* Only NDIS 6.20+ is supported:
* We only support 4bytes element in indirect table, which has been
* adopted since NDIS 6.20.
*/
KASSERT(sc->hn_ndis_ver >= HN_NDIS_VERSION_6_20,
("NDIS 6.20+ is required, NDIS version 0x%08x", sc->hn_ndis_ver));
/* XXX only one can be specified through, popcnt? */
KASSERT((sc->hn_rss_hash & NDIS_HASH_FUNCTION_MASK),
("no hash func %08x", sc->hn_rss_hash));
KASSERT((sc->hn_rss_hash & NDIS_HASH_STD),
("no standard hash types %08x", sc->hn_rss_hash));
KASSERT(sc->hn_rss_ind_size > 0, ("no indirect table size"));
if (bootverbose) {
if_printf(sc->hn_ifp, "RSS indirect table size %d, "
"hash 0x%08x\n", sc->hn_rss_ind_size, sc->hn_rss_hash);
}
/*
* NOTE:
* DO NOT whack rss_key and rss_ind, which are setup by the caller.
*/
memset(prm, 0, sizeof(*prm));
rss_size = NDIS_RSSPRM_TOEPLITZ_SIZE(sc->hn_rss_ind_size);
prm->ndis_hdr.ndis_type = NDIS_OBJTYPE_RSS_PARAMS;
prm->ndis_hdr.ndis_rev = NDIS_RSS_PARAMS_REV_2;
prm->ndis_hdr.ndis_size = rss_size;
prm->ndis_flags = flags;
prm->ndis_hash = sc->hn_rss_hash &
(NDIS_HASH_FUNCTION_MASK | NDIS_HASH_STD);
prm->ndis_indsize = sizeof(rss->rss_ind[0]) * sc->hn_rss_ind_size;
prm->ndis_indoffset =
__offsetof(struct ndis_rssprm_toeplitz, rss_ind[0]);
prm->ndis_keysize = sizeof(rss->rss_key);
prm->ndis_keyoffset =
__offsetof(struct ndis_rssprm_toeplitz, rss_key[0]);
error = hn_rndis_set(sc, OID_GEN_RECEIVE_SCALE_PARAMETERS,
rss, rss_size);
if (error) {
if_printf(sc->hn_ifp, "RSS config failed: %d\n", error);
} else {
if (bootverbose)
if_printf(sc->hn_ifp, "RSS config done\n");
}
return (error);
}
int
hn_rndis_set_rxfilter(struct hn_softc *sc, uint32_t filter)
{
int error;
error = hn_rndis_set(sc, OID_GEN_CURRENT_PACKET_FILTER,
&filter, sizeof(filter));
if (error) {
if_printf(sc->hn_ifp, "set RX filter 0x%08x failed: %d\n",
filter, error);
} else {
if (bootverbose) {
if_printf(sc->hn_ifp, "set RX filter 0x%08x done\n",
filter);
}
}
return (error);
}
static int
hn_rndis_init(struct hn_softc *sc)
{
struct rndis_init_req *req;
const struct rndis_init_comp *comp;
struct vmbus_xact *xact;
size_t comp_len;
uint32_t rid;
int error;
xact = vmbus_xact_get(sc->hn_xact, sizeof(*req));
if (xact == NULL) {
if_printf(sc->hn_ifp, "no xact for RNDIS init\n");
return (ENXIO);
}
rid = hn_rndis_rid(sc);
req = vmbus_xact_req_data(xact);
req->rm_type = REMOTE_NDIS_INITIALIZE_MSG;
req->rm_len = sizeof(*req);
req->rm_rid = rid;
req->rm_ver_major = RNDIS_VERSION_MAJOR;
req->rm_ver_minor = RNDIS_VERSION_MINOR;
req->rm_max_xfersz = HN_RNDIS_XFER_SIZE;
comp_len = RNDIS_INIT_COMP_SIZE_MIN;
comp = hn_rndis_xact_execute(sc, xact, rid, sizeof(*req), &comp_len,
REMOTE_NDIS_INITIALIZE_CMPLT);
if (comp == NULL) {
if_printf(sc->hn_ifp, "exec RNDIS init failed\n");
error = EIO;
goto done;
}
if (comp->rm_status != RNDIS_STATUS_SUCCESS) {
if_printf(sc->hn_ifp, "RNDIS init failed: status 0x%08x\n",
comp->rm_status);
error = EIO;
goto done;
}
sc->hn_rndis_agg_size = comp->rm_pktmaxsz;
sc->hn_rndis_agg_pkts = comp->rm_pktmaxcnt;
sc->hn_rndis_agg_align = 1U << comp->rm_align;
if (sc->hn_rndis_agg_align < sizeof(uint32_t)) {
/*
* The RNDIS packet messsage encap assumes that the RNDIS
* packet message is at least 4 bytes aligned. Fix up the
* alignment here, if the remote side sets the alignment
* too low.
*/
if_printf(sc->hn_ifp, "fixup RNDIS aggpkt align: %u -> %zu\n",
sc->hn_rndis_agg_align, sizeof(uint32_t));
sc->hn_rndis_agg_align = sizeof(uint32_t);
}
if (bootverbose) {
if_printf(sc->hn_ifp, "RNDIS ver %u.%u, "
"aggpkt size %u, aggpkt cnt %u, aggpkt align %u\n",
comp->rm_ver_major, comp->rm_ver_minor,
sc->hn_rndis_agg_size, sc->hn_rndis_agg_pkts,
sc->hn_rndis_agg_align);
}
error = 0;
done:
vmbus_xact_put(xact);
return (error);
}
static int
hn_rndis_halt(struct hn_softc *sc)
{
struct vmbus_xact *xact;
struct rndis_halt_req *halt;
struct hn_nvs_sendctx sndc;
size_t comp_len;
xact = vmbus_xact_get(sc->hn_xact, sizeof(*halt));
if (xact == NULL) {
if_printf(sc->hn_ifp, "no xact for RNDIS halt\n");
return (ENXIO);
}
halt = vmbus_xact_req_data(xact);
halt->rm_type = REMOTE_NDIS_HALT_MSG;
halt->rm_len = sizeof(*halt);
halt->rm_rid = hn_rndis_rid(sc);
/* No RNDIS completion; rely on NVS message send completion */
hn_nvs_sendctx_init(&sndc, hn_nvs_sent_xact, xact);
hn_rndis_xact_exec1(sc, xact, sizeof(*halt), &sndc, &comp_len);
vmbus_xact_put(xact);
if (bootverbose)
if_printf(sc->hn_ifp, "RNDIS halt done\n");
return (0);
}
static int
hn_rndis_query_hwcaps(struct hn_softc *sc, struct ndis_offload *caps)
{
struct ndis_offload in;
size_t caps_len, size;
int error;
memset(&in, 0, sizeof(in));
in.ndis_hdr.ndis_type = NDIS_OBJTYPE_OFFLOAD;
if (sc->hn_ndis_ver >= HN_NDIS_VERSION_6_30) {
in.ndis_hdr.ndis_rev = NDIS_OFFLOAD_REV_3;
size = NDIS_OFFLOAD_SIZE;
} else if (sc->hn_ndis_ver >= HN_NDIS_VERSION_6_1) {
in.ndis_hdr.ndis_rev = NDIS_OFFLOAD_REV_2;
size = NDIS_OFFLOAD_SIZE_6_1;
} else {
in.ndis_hdr.ndis_rev = NDIS_OFFLOAD_REV_1;
size = NDIS_OFFLOAD_SIZE_6_0;
}
in.ndis_hdr.ndis_size = size;
caps_len = NDIS_OFFLOAD_SIZE;
error = hn_rndis_query2(sc, OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES,
&in, size, caps, &caps_len, NDIS_OFFLOAD_SIZE_6_0);
if (error)
return (error);
/*
* Preliminary verification.
*/
if (caps->ndis_hdr.ndis_type != NDIS_OBJTYPE_OFFLOAD) {
if_printf(sc->hn_ifp, "invalid NDIS objtype 0x%02x\n",
caps->ndis_hdr.ndis_type);
return (EINVAL);
}
if (caps->ndis_hdr.ndis_rev < NDIS_OFFLOAD_REV_1) {
if_printf(sc->hn_ifp, "invalid NDIS objrev 0x%02x\n",
caps->ndis_hdr.ndis_rev);
return (EINVAL);
}
if (caps->ndis_hdr.ndis_size > caps_len) {
if_printf(sc->hn_ifp, "invalid NDIS objsize %u, "
"data size %zu\n", caps->ndis_hdr.ndis_size, caps_len);
return (EINVAL);
} else if (caps->ndis_hdr.ndis_size < NDIS_OFFLOAD_SIZE_6_0) {
if_printf(sc->hn_ifp, "invalid NDIS objsize %u\n",
caps->ndis_hdr.ndis_size);
return (EINVAL);
}
if (bootverbose) {
/*
* NOTE:
* caps->ndis_hdr.ndis_size MUST be checked before accessing
* NDIS 6.1+ specific fields.
*/
if_printf(sc->hn_ifp, "hwcaps rev %u\n",
caps->ndis_hdr.ndis_rev);
if_printf(sc->hn_ifp, "hwcaps csum: "
"ip4 tx 0x%x/0x%x rx 0x%x/0x%x, "
"ip6 tx 0x%x/0x%x rx 0x%x/0x%x\n",
caps->ndis_csum.ndis_ip4_txcsum,
caps->ndis_csum.ndis_ip4_txenc,
caps->ndis_csum.ndis_ip4_rxcsum,
caps->ndis_csum.ndis_ip4_rxenc,
caps->ndis_csum.ndis_ip6_txcsum,
caps->ndis_csum.ndis_ip6_txenc,
caps->ndis_csum.ndis_ip6_rxcsum,
caps->ndis_csum.ndis_ip6_rxenc);
if_printf(sc->hn_ifp, "hwcaps lsov2: "
"ip4 maxsz %u minsg %u encap 0x%x, "
"ip6 maxsz %u minsg %u encap 0x%x opts 0x%x\n",
caps->ndis_lsov2.ndis_ip4_maxsz,
caps->ndis_lsov2.ndis_ip4_minsg,
caps->ndis_lsov2.ndis_ip4_encap,
caps->ndis_lsov2.ndis_ip6_maxsz,
caps->ndis_lsov2.ndis_ip6_minsg,
caps->ndis_lsov2.ndis_ip6_encap,
caps->ndis_lsov2.ndis_ip6_opts);
}
return (0);
}
int
hn_rndis_attach(struct hn_softc *sc, int mtu, int *init_done)
{
int error;
*init_done = 0;
/*
* Initialize RNDIS.
*/
error = hn_rndis_init(sc);
if (error)
return (error);
*init_done = 1;
/*
* Configure NDIS offload settings.
*/
hn_rndis_conf_offload(sc, mtu);
return (0);
}
void
hn_rndis_detach(struct hn_softc *sc)
{
/* Halt the RNDIS. */
hn_rndis_halt(sc);
}
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