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src/sys/dev/pv/if_hvn.c

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/*-
* Copyright (c) 2009-2012,2016 Microsoft Corp.
* Copyright (c) 2010-2012 Citrix Inc.
* Copyright (c) 2012 NetApp Inc.
* Copyright (c) 2016 Mike Belopuhov <mike@esdenera.com>
* 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.
*/
/*
* The OpenBSD port was done under funding by Esdenera Networks GmbH.
*/
#include "bpfilter.h"
#include "vlan.h"
#include "hyperv.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/atomic.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/pool.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/task.h>
#include <sys/timeout.h>
#include <machine/bus.h>
#include <uvm/uvm_extern.h>
#include <dev/pv/hypervreg.h>
#include <dev/pv/hypervvar.h>
#include <dev/rndis.h>
#include <dev/pv/ndis.h>
#include <dev/pv/if_hvnreg.h>
#include <net/if.h>
#include <net/if_media.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#ifdef INET6
#include <netinet/ip6.h>
#endif
#if NBPFILTER > 0
#include <net/bpf.h>
#endif
#define HVN_NVS_MSGSIZE 32
#define HVN_NVS_BUFSIZE PAGE_SIZE
/*
* RNDIS control interface
*/
#define HVN_RNDIS_CTLREQS 4
#define HVN_RNDIS_BUFSIZE 512
struct rndis_cmd {
uint32_t rc_id;
struct hvn_nvs_rndis rc_msg;
void *rc_req;
bus_dmamap_t rc_dmap;
bus_dma_segment_t rc_segs;
int rc_nsegs;
uint64_t rc_gpa;
struct rndis_packet_msg rc_cmp;
uint32_t rc_cmplen;
uint8_t rc_cmpbuf[HVN_RNDIS_BUFSIZE];
int rc_done;
TAILQ_ENTRY(rndis_cmd) rc_entry;
};
TAILQ_HEAD(rndis_queue, rndis_cmd);
#define HVN_MAXMTU (9 * 1024)
#define HVN_RNDIS_XFER_SIZE 2048
/*
* Tx ring
*/
#define HVN_TX_DESC 256
#define HVN_TX_FRAGS 15 /* 31 is the max */
#define HVN_TX_FRAG_SIZE PAGE_SIZE
#define HVN_TX_PKT_SIZE 16384
#define HVN_RNDIS_PKT_LEN \
(sizeof(struct rndis_packet_msg) + \
sizeof(struct rndis_pktinfo) + NDIS_VLAN_INFO_SIZE + \
sizeof(struct rndis_pktinfo) + NDIS_TXCSUM_INFO_SIZE)
struct hvn_tx_desc {
uint32_t txd_id;
int txd_ready;
struct vmbus_gpa txd_sgl[HVN_TX_FRAGS + 1];
int txd_nsge;
struct mbuf *txd_buf;
bus_dmamap_t txd_dmap;
struct vmbus_gpa txd_gpa;
struct rndis_packet_msg *txd_req;
};
struct hvn_softc {
struct device sc_dev;
struct hv_softc *sc_hvsc;
struct hv_channel *sc_chan;
bus_dma_tag_t sc_dmat;
struct arpcom sc_ac;
struct ifmedia sc_media;
int sc_link_state;
/* NVS protocol */
int sc_proto;
uint32_t sc_nvstid;
uint8_t sc_nvsrsp[HVN_NVS_MSGSIZE];
uint8_t *sc_nvsbuf;
int sc_nvsdone;
/* RNDIS protocol */
int sc_ndisver;
uint32_t sc_rndisrid;
struct rndis_queue sc_cntl_sq; /* submission queue */
struct mutex sc_cntl_sqlck;
struct rndis_queue sc_cntl_cq; /* completion queue */
struct mutex sc_cntl_cqlck;
struct rndis_queue sc_cntl_fq; /* free queue */
struct mutex sc_cntl_fqlck;
struct rndis_cmd sc_cntl_msgs[HVN_RNDIS_CTLREQS];
struct hvn_nvs_rndis sc_data_msg;
/* Rx ring */
void *sc_rx_ring;
int sc_rx_size;
uint32_t sc_rx_hndl;
/* Tx ring */
uint32_t sc_tx_next;
uint32_t sc_tx_avail;
struct hvn_tx_desc sc_tx_desc[HVN_TX_DESC];
bus_dmamap_t sc_tx_rmap;
void *sc_tx_msgs;
bus_dma_segment_t sc_tx_mseg;
};
int hvn_match(struct device *, void *, void *);
void hvn_attach(struct device *, struct device *, void *);
int hvn_ioctl(struct ifnet *, u_long, caddr_t);
int hvn_media_change(struct ifnet *);
void hvn_media_status(struct ifnet *, struct ifmediareq *);
int hvn_iff(struct hvn_softc *);
void hvn_init(struct hvn_softc *);
void hvn_stop(struct hvn_softc *);
void hvn_start(struct ifqueue *);
int hvn_encap(struct hvn_softc *, struct mbuf *, struct hvn_tx_desc **);
void hvn_decap(struct hvn_softc *, struct hvn_tx_desc *);
void hvn_txeof(struct hvn_softc *, uint64_t);
int hvn_rx_ring_create(struct hvn_softc *);
int hvn_rx_ring_destroy(struct hvn_softc *);
int hvn_tx_ring_create(struct hvn_softc *);
void hvn_tx_ring_destroy(struct hvn_softc *);
int hvn_set_capabilities(struct hvn_softc *);
int hvn_get_lladdr(struct hvn_softc *);
int hvn_set_lladdr(struct hvn_softc *);
void hvn_get_link_status(struct hvn_softc *);
void hvn_link_status(struct hvn_softc *);
/* NSVP */
int hvn_nvs_attach(struct hvn_softc *);
void hvn_nvs_intr(void *);
int hvn_nvs_cmd(struct hvn_softc *, void *, size_t, uint64_t, int);
int hvn_nvs_ack(struct hvn_softc *, uint64_t);
void hvn_nvs_detach(struct hvn_softc *);
/* RNDIS */
int hvn_rndis_attach(struct hvn_softc *);
int hvn_rndis_cmd(struct hvn_softc *, struct rndis_cmd *, int);
void hvn_rndis_input(struct hvn_softc *, uint64_t, void *);
void hvn_rxeof(struct hvn_softc *, caddr_t, uint32_t, struct mbuf_list *);
void hvn_rndis_complete(struct hvn_softc *, caddr_t, uint32_t);
int hvn_rndis_output(struct hvn_softc *, struct hvn_tx_desc *);
void hvn_rndis_status(struct hvn_softc *, caddr_t, uint32_t);
int hvn_rndis_query(struct hvn_softc *, uint32_t, void *, size_t *);
int hvn_rndis_set(struct hvn_softc *, uint32_t, void *, size_t);
int hvn_rndis_close(struct hvn_softc *);
void hvn_rndis_detach(struct hvn_softc *);
struct cfdriver hvn_cd = {
NULL, "hvn", DV_IFNET
};
const struct cfattach hvn_ca = {
sizeof(struct hvn_softc), hvn_match, hvn_attach
};
int
hvn_match(struct device *parent, void *match, void *aux)
{
struct hv_attach_args *aa = aux;
if (strcmp("network", aa->aa_ident))
return (0);
return (1);
}
void
hvn_attach(struct device *parent, struct device *self, void *aux)
{
struct hv_attach_args *aa = aux;
struct hvn_softc *sc = (struct hvn_softc *)self;
struct ifnet *ifp = &sc->sc_ac.ac_if;
sc->sc_hvsc = (struct hv_softc *)parent;
sc->sc_chan = aa->aa_chan;
sc->sc_dmat = aa->aa_dmat;
strlcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ);
printf(" channel %u", sc->sc_chan->ch_id);
if (hvn_nvs_attach(sc)) {
printf(": failed to init NVSP\n");
return;
}
if (hvn_rx_ring_create(sc)) {
printf(": failed to create Rx ring\n");
goto detach;
}
if (hvn_tx_ring_create(sc)) {
printf(": failed to create Tx ring\n");
goto detach;
}
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_xflags = IFXF_MPSAFE;
ifp->if_ioctl = hvn_ioctl;
ifp->if_qstart = hvn_start;
ifp->if_softc = sc;
ifp->if_capabilities = IFCAP_CSUM_IPv4 | IFCAP_CSUM_TCPv4 |
IFCAP_CSUM_TCPv6;
if (sc->sc_ndisver > NDIS_VERSION_6_30)
ifp->if_capabilities |= IFCAP_CSUM_UDPv4 | IFCAP_CSUM_UDPv6;
if (sc->sc_proto >= HVN_NVS_PROTO_VERSION_2) {
ifp->if_hardmtu = HVN_MAXMTU;
#if NVLAN > 0
ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU;
#endif
}
ifq_set_maxlen(&ifp->if_snd, HVN_TX_DESC - 1);
ifmedia_init(&sc->sc_media, IFM_IMASK, hvn_media_change,
hvn_media_status);
ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_MANUAL, 0, NULL);
ifmedia_set(&sc->sc_media, IFM_ETHER | IFM_MANUAL);
if_attach(ifp);
if (hvn_rndis_attach(sc)) {
printf(": failed to init RNDIS\n");
goto detach;
}
printf(": NVS %d.%d NDIS %d.%d", sc->sc_proto >> 16,
sc->sc_proto & 0xffff, sc->sc_ndisver >> 16 ,
sc->sc_ndisver & 0xffff);
if (hvn_set_capabilities(sc)) {
printf(": failed to setup offloading\n");
hvn_rndis_detach(sc);
goto detach;
}
if (hvn_get_lladdr(sc)) {
printf(": failed to obtain an ethernet address\n");
hvn_rndis_detach(sc);
goto detach;
}
printf(", address %s\n", ether_sprintf(sc->sc_ac.ac_enaddr));
ether_ifattach(ifp);
return;
detach:
hvn_rx_ring_destroy(sc);
hvn_tx_ring_destroy(sc);
hvn_nvs_detach(sc);
if (ifp->if_qstart)
if_detach(ifp);
}
int
hvn_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
{
struct hvn_softc *sc = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *)data;
int s, error = 0;
s = splnet();
switch (command) {
case SIOCSIFADDR:
ifp->if_flags |= IFF_UP;
if (!(ifp->if_flags & IFF_RUNNING))
hvn_init(sc);
break;
case SIOCSIFFLAGS:
if (ifp->if_flags & IFF_UP) {
if (ifp->if_flags & IFF_RUNNING)
error = ENETRESET;
else
hvn_init(sc);
} else {
if (ifp->if_flags & IFF_RUNNING)
hvn_stop(sc);
}
break;
case SIOCGIFMEDIA:
case SIOCSIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, command);
break;
default:
error = ether_ioctl(ifp, &sc->sc_ac, command, data);
}
if (error == ENETRESET) {
if (ifp->if_flags & IFF_RUNNING)
hvn_iff(sc);
error = 0;
}
splx(s);
return (error);
}
int
hvn_media_change(struct ifnet *ifp)
{
return (0);
}
void
hvn_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
{
struct hvn_softc *sc = ifp->if_softc;
hvn_get_link_status(sc);
hvn_link_status(sc);
ifmr->ifm_status = IFM_AVALID;
ifmr->ifm_active = IFM_ETHER | IFM_MANUAL;
if (sc->sc_link_state == LINK_STATE_UP)
ifmr->ifm_status |= IFM_ACTIVE;
}
void
hvn_link_status(struct hvn_softc *sc)
{
struct ifnet *ifp = &sc->sc_ac.ac_if;
if (sc->sc_link_state != ifp->if_link_state) {
ifp->if_link_state = sc->sc_link_state;
if_link_state_change(ifp);
}
}
int
hvn_iff(struct hvn_softc *sc)
{
struct ifnet *ifp = &sc->sc_ac.ac_if;
uint32_t filter = 0;
int rv;
ifp->if_flags &= ~IFF_ALLMULTI;
if ((ifp->if_flags & IFF_PROMISC) || sc->sc_ac.ac_multirangecnt > 0) {
ifp->if_flags |= IFF_ALLMULTI;
filter = NDIS_PACKET_TYPE_PROMISCUOUS;
} else {
filter = NDIS_PACKET_TYPE_BROADCAST |
NDIS_PACKET_TYPE_DIRECTED;
if (sc->sc_ac.ac_multicnt > 0) {
ifp->if_flags |= IFF_ALLMULTI;
filter |= NDIS_PACKET_TYPE_ALL_MULTICAST;
}
}
rv = hvn_rndis_set(sc, OID_GEN_CURRENT_PACKET_FILTER,
&filter, sizeof(filter));
if (rv)
DPRINTF("%s: failed to set RNDIS filter to %#x\n",
sc->sc_dev.dv_xname, filter);
return (rv);
}
void
hvn_init(struct hvn_softc *sc)
{
struct ifnet *ifp = &sc->sc_ac.ac_if;
hvn_stop(sc);
if (hvn_iff(sc) == 0) {
ifp->if_flags |= IFF_RUNNING;
ifq_clr_oactive(&ifp->if_snd);
}
}
void
hvn_stop(struct hvn_softc *sc)
{
struct ifnet *ifp = &sc->sc_ac.ac_if;
if (ifp->if_flags & IFF_RUNNING) {
ifp->if_flags &= ~IFF_RUNNING;
hvn_rndis_close(sc);
}
ifq_barrier(&ifp->if_snd);
sched_barrier(NULL);
ifq_clr_oactive(&ifp->if_snd);
}
void
hvn_start(struct ifqueue *ifq)
{
struct ifnet *ifp = ifq->ifq_if;
struct hvn_softc *sc = ifp->if_softc;
struct hvn_tx_desc *txd;
struct mbuf *m;
for (;;) {
if (!sc->sc_tx_avail) {
/* transient */
ifq_set_oactive(ifq);
break;
}
m = ifq_dequeue(ifq);
if (m == NULL)
break;
if (hvn_encap(sc, m, &txd)) {
/* the chain is too large */
ifp->if_oerrors++;
m_freem(m);
continue;
}
#if NBPFILTER > 0
if (ifp->if_bpf)
bpf_mtap_ether(ifp->if_bpf, m, BPF_DIRECTION_OUT);
#endif
if (hvn_rndis_output(sc, txd)) {
hvn_decap(sc, txd);
ifp->if_oerrors++;
m_freem(m);
continue;
}
sc->sc_tx_next++;
}
}
static inline char *
hvn_rndis_pktinfo_append(struct rndis_packet_msg *pkt, size_t pktsize,
size_t datalen, uint32_t type)
{
struct rndis_pktinfo *pi;
size_t pi_size = sizeof(*pi) + datalen;
char *cp;
KASSERT(pkt->rm_pktinfooffset + pkt->rm_pktinfolen + pi_size <=
pktsize);
cp = (char *)pkt + pkt->rm_pktinfooffset + pkt->rm_pktinfolen;
pi = (struct rndis_pktinfo *)cp;
pi->rm_size = pi_size;
pi->rm_type = type;
pi->rm_pktinfooffset = sizeof(*pi);
pkt->rm_pktinfolen += pi_size;
pkt->rm_dataoffset += pi_size;
pkt->rm_len += pi_size;
return ((char *)pi->rm_data);
}
int
hvn_encap(struct hvn_softc *sc, struct mbuf *m, struct hvn_tx_desc **txd0)
{
struct hvn_tx_desc *txd;
struct rndis_packet_msg *pkt;
bus_dma_segment_t *seg;
size_t pktlen;
int i, rv;
do {
txd = &sc->sc_tx_desc[sc->sc_tx_next % HVN_TX_DESC];
sc->sc_tx_next++;
} while (!txd->txd_ready);
txd->txd_ready = 0;
pkt = txd->txd_req;
memset(pkt, 0, HVN_RNDIS_PKT_LEN);
pkt->rm_type = REMOTE_NDIS_PACKET_MSG;
pkt->rm_len = sizeof(*pkt) + m->m_pkthdr.len;
pkt->rm_dataoffset = RNDIS_DATA_OFFSET;
pkt->rm_datalen = m->m_pkthdr.len;
pkt->rm_pktinfooffset = sizeof(*pkt); /* adjusted below */
pkt->rm_pktinfolen = 0;
rv = bus_dmamap_load_mbuf(sc->sc_dmat, txd->txd_dmap, m, BUS_DMA_READ |
BUS_DMA_NOWAIT);
switch (rv) {
case 0:
break;
case EFBIG:
if (m_defrag(m, M_NOWAIT) == 0 &&
bus_dmamap_load_mbuf(sc->sc_dmat, txd->txd_dmap, m,
BUS_DMA_READ | BUS_DMA_NOWAIT) == 0)
break;
/* FALLTHROUGH */
default:
DPRINTF("%s: failed to load mbuf\n", sc->sc_dev.dv_xname);
return (-1);
}
txd->txd_buf = m;
#if NVLAN > 0
if (m->m_flags & M_VLANTAG) {
uint32_t vlan;
char *cp;
vlan = NDIS_VLAN_INFO(EVL_VLANOFTAG(m->m_pkthdr.ether_vtag),
EVL_PRIOFTAG(m->m_pkthdr.ether_vtag));
cp = hvn_rndis_pktinfo_append(pkt, HVN_RNDIS_PKT_LEN,
NDIS_VLAN_INFO_SIZE, NDIS_PKTINFO_TYPE_VLAN);
memcpy(cp, &vlan, NDIS_VLAN_INFO_SIZE);
}
#endif
if (m->m_pkthdr.csum_flags & (M_IPV4_CSUM_OUT | M_UDP_CSUM_OUT |
M_TCP_CSUM_OUT)) {
uint32_t csum = NDIS_TXCSUM_INFO_IPV4;
char *cp;
if (m->m_pkthdr.csum_flags & M_IPV4_CSUM_OUT)
csum |= NDIS_TXCSUM_INFO_IPCS;
if (m->m_pkthdr.csum_flags & M_TCP_CSUM_OUT)
csum |= NDIS_TXCSUM_INFO_TCPCS;
if (m->m_pkthdr.csum_flags & M_UDP_CSUM_OUT)
csum |= NDIS_TXCSUM_INFO_UDPCS;
cp = hvn_rndis_pktinfo_append(pkt, HVN_RNDIS_PKT_LEN,
NDIS_TXCSUM_INFO_SIZE, NDIS_PKTINFO_TYPE_CSUM);
memcpy(cp, &csum, NDIS_TXCSUM_INFO_SIZE);
}
pktlen = pkt->rm_pktinfooffset + pkt->rm_pktinfolen;
pkt->rm_pktinfooffset -= RNDIS_HEADER_OFFSET;
/* Attach an RNDIS message to the first slot */
txd->txd_sgl[0].gpa_page = txd->txd_gpa.gpa_page;
txd->txd_sgl[0].gpa_ofs = txd->txd_gpa.gpa_ofs;
txd->txd_sgl[0].gpa_len = pktlen;
txd->txd_nsge = txd->txd_dmap->dm_nsegs + 1;
for (i = 0; i < txd->txd_dmap->dm_nsegs; i++) {
seg = &txd->txd_dmap->dm_segs[i];
txd->txd_sgl[1 + i].gpa_page = atop(seg->ds_addr);
txd->txd_sgl[1 + i].gpa_ofs = seg->ds_addr & PAGE_MASK;
txd->txd_sgl[1 + i].gpa_len = seg->ds_len;
}
*txd0 = txd;
atomic_dec_int(&sc->sc_tx_avail);
return (0);
}
void
hvn_decap(struct hvn_softc *sc, struct hvn_tx_desc *txd)
{
bus_dmamap_sync(sc->sc_dmat, txd->txd_dmap, 0, 0,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->sc_dmat, txd->txd_dmap);
txd->txd_buf = NULL;
txd->txd_nsge = 0;
txd->txd_ready = 1;
atomic_inc_int(&sc->sc_tx_avail);
}
void
hvn_txeof(struct hvn_softc *sc, uint64_t tid)
{
struct hvn_tx_desc *txd;
struct mbuf *m;
uint32_t id = tid >> 32;
if ((tid & 0xffffffffU) != 0)
return;
id -= HVN_NVS_CHIM_SIG;
if (id >= HVN_TX_DESC)
panic("tx packet index too large: %u", id);
txd = &sc->sc_tx_desc[id];
if ((m = txd->txd_buf) == NULL)
panic("%s: no mbuf @%u", sc->sc_dev.dv_xname, id);
txd->txd_buf = NULL;
bus_dmamap_sync(sc->sc_dmat, txd->txd_dmap, 0, 0,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->sc_dmat, txd->txd_dmap);
m_freem(m);
txd->txd_ready = 1;
atomic_inc_int(&sc->sc_tx_avail);
}
int
hvn_rx_ring_create(struct hvn_softc *sc)
{
struct hvn_nvs_rxbuf_conn cmd;
struct hvn_nvs_rxbuf_conn_resp *rsp;
uint64_t tid;
if (sc->sc_proto <= HVN_NVS_PROTO_VERSION_2)
sc->sc_rx_size = 15 * 1024 * 1024; /* 15MB */
else
sc->sc_rx_size = 16 * 1024 * 1024; /* 16MB */
sc->sc_rx_ring = km_alloc(sc->sc_rx_size, &kv_any, &kp_zero,
cold ? &kd_nowait : &kd_waitok);
if (sc->sc_rx_ring == NULL) {
DPRINTF("%s: failed to allocate Rx ring buffer\n",
sc->sc_dev.dv_xname);
return (-1);
}
if (hv_handle_alloc(sc->sc_chan, sc->sc_rx_ring, sc->sc_rx_size,
&sc->sc_rx_hndl)) {
DPRINTF("%s: failed to obtain a PA handle\n",
sc->sc_dev.dv_xname);
goto errout;
}
memset(&cmd, 0, sizeof(cmd));
cmd.nvs_type = HVN_NVS_TYPE_RXBUF_CONN;
cmd.nvs_gpadl = sc->sc_rx_hndl;
cmd.nvs_sig = HVN_NVS_RXBUF_SIG;
tid = atomic_inc_int_nv(&sc->sc_nvstid);
if (hvn_nvs_cmd(sc, &cmd, sizeof(cmd), tid, 100))
goto errout;
rsp = (struct hvn_nvs_rxbuf_conn_resp *)&sc->sc_nvsrsp;
if (rsp->nvs_status != HVN_NVS_STATUS_OK) {
DPRINTF("%s: failed to set up the Rx ring\n",
sc->sc_dev.dv_xname);
goto errout;
}
if (rsp->nvs_nsect > 1) {
DPRINTF("%s: invalid number of Rx ring sections: %u\n",
sc->sc_dev.dv_xname, rsp->nvs_nsect);
hvn_rx_ring_destroy(sc);
return (-1);
}
return (0);
errout:
if (sc->sc_rx_hndl) {
hv_handle_free(sc->sc_chan, sc->sc_rx_hndl);
sc->sc_rx_hndl = 0;
}
if (sc->sc_rx_ring) {
km_free(sc->sc_rx_ring, sc->sc_rx_size, &kv_any, &kp_zero);
sc->sc_rx_ring = NULL;
}
return (-1);
}
int
hvn_rx_ring_destroy(struct hvn_softc *sc)
{
struct hvn_nvs_rxbuf_disconn cmd;
uint64_t tid;
if (sc->sc_rx_ring == NULL)
return (0);
memset(&cmd, 0, sizeof(cmd));
cmd.nvs_type = HVN_NVS_TYPE_RXBUF_DISCONN;
cmd.nvs_sig = HVN_NVS_RXBUF_SIG;
tid = atomic_inc_int_nv(&sc->sc_nvstid);
if (hvn_nvs_cmd(sc, &cmd, sizeof(cmd), tid, 0))
return (-1);
delay(100);
hv_handle_free(sc->sc_chan, sc->sc_rx_hndl);
sc->sc_rx_hndl = 0;
km_free(sc->sc_rx_ring, sc->sc_rx_size, &kv_any, &kp_zero);
sc->sc_rx_ring = NULL;
return (0);
}
int
hvn_tx_ring_create(struct hvn_softc *sc)
{
struct hvn_tx_desc *txd;
bus_dma_segment_t *seg;
size_t msgsize;
int i, rsegs;
paddr_t pa;
msgsize = roundup(HVN_RNDIS_PKT_LEN, 128);
/* Allocate memory to store RNDIS messages */
if (bus_dmamem_alloc(sc->sc_dmat, msgsize * HVN_TX_DESC, PAGE_SIZE, 0,
&sc->sc_tx_mseg, 1, &rsegs, BUS_DMA_ZERO | BUS_DMA_WAITOK)) {
DPRINTF("%s: failed to allocate memory for RDNIS messages\n",
sc->sc_dev.dv_xname);
goto errout;
}
if (bus_dmamem_map(sc->sc_dmat, &sc->sc_tx_mseg, 1, msgsize *
HVN_TX_DESC, (caddr_t *)&sc->sc_tx_msgs, BUS_DMA_WAITOK)) {
DPRINTF("%s: failed to establish mapping for RDNIS messages\n",
sc->sc_dev.dv_xname);
goto errout;
}
if (bus_dmamap_create(sc->sc_dmat, msgsize * HVN_TX_DESC, 1,
msgsize * HVN_TX_DESC, 0, BUS_DMA_WAITOK, &sc->sc_tx_rmap)) {
DPRINTF("%s: failed to create map for RDNIS messages\n",
sc->sc_dev.dv_xname);
goto errout;
}
if (bus_dmamap_load(sc->sc_dmat, sc->sc_tx_rmap, sc->sc_tx_msgs,
msgsize * HVN_TX_DESC, NULL, BUS_DMA_WAITOK)) {
DPRINTF("%s: failed to create map for RDNIS messages\n",
sc->sc_dev.dv_xname);
goto errout;
}
for (i = 0; i < HVN_TX_DESC; i++) {
txd = &sc->sc_tx_desc[i];
if (bus_dmamap_create(sc->sc_dmat, HVN_TX_PKT_SIZE,
HVN_TX_FRAGS, HVN_TX_FRAG_SIZE, PAGE_SIZE,
BUS_DMA_WAITOK, &txd->txd_dmap)) {
DPRINTF("%s: failed to create map for TX descriptors\n",
sc->sc_dev.dv_xname);
goto errout;
}
seg = &sc->sc_tx_rmap->dm_segs[0];
pa = seg->ds_addr + (msgsize * i);
txd->txd_gpa.gpa_page = atop(pa);
txd->txd_gpa.gpa_ofs = pa & PAGE_MASK;
txd->txd_gpa.gpa_len = msgsize;
txd->txd_req = (void *)((caddr_t)sc->sc_tx_msgs +
(msgsize * i));
txd->txd_id = i + HVN_NVS_CHIM_SIG;
txd->txd_ready = 1;
}
sc->sc_tx_avail = HVN_TX_DESC;
return (0);
errout:
hvn_tx_ring_destroy(sc);
return (-1);
}
void
hvn_tx_ring_destroy(struct hvn_softc *sc)
{
struct hvn_tx_desc *txd;
int i;
for (i = 0; i < HVN_TX_DESC; i++) {
txd = &sc->sc_tx_desc[i];
if (txd->txd_dmap == NULL)
continue;
bus_dmamap_sync(sc->sc_dmat, txd->txd_dmap, 0, 0,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->sc_dmat, txd->txd_dmap);
bus_dmamap_destroy(sc->sc_dmat, txd->txd_dmap);
txd->txd_dmap = NULL;
if (txd->txd_buf == NULL)
continue;
m_free(txd->txd_buf);
txd->txd_buf = NULL;
}
if (sc->sc_tx_rmap) {
bus_dmamap_sync(sc->sc_dmat, sc->sc_tx_rmap, 0, 0,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->sc_dmat, sc->sc_tx_rmap);
bus_dmamap_destroy(sc->sc_dmat, sc->sc_tx_rmap);
}
if (sc->sc_tx_msgs) {
size_t msgsize = roundup(HVN_RNDIS_PKT_LEN, 128);
bus_dmamem_unmap(sc->sc_dmat, (caddr_t)sc->sc_tx_msgs,
msgsize * HVN_TX_DESC);
bus_dmamem_free(sc->sc_dmat, &sc->sc_tx_mseg, 1);
}
sc->sc_tx_rmap = NULL;
sc->sc_tx_msgs = NULL;
}
int
hvn_get_lladdr(struct hvn_softc *sc)
{
char enaddr[ETHER_ADDR_LEN];
size_t addrlen = ETHER_ADDR_LEN;
int rv;
rv = hvn_rndis_query(sc, OID_802_3_PERMANENT_ADDRESS,
enaddr, &addrlen);
if (rv == 0 && addrlen == ETHER_ADDR_LEN)
memcpy(sc->sc_ac.ac_enaddr, enaddr, ETHER_ADDR_LEN);
return (rv);
}
int
hvn_set_lladdr(struct hvn_softc *sc)
{
return (hvn_rndis_set(sc, OID_802_3_CURRENT_ADDRESS,
sc->sc_ac.ac_enaddr, ETHER_ADDR_LEN));
}
void
hvn_get_link_status(struct hvn_softc *sc)
{
uint32_t state;
size_t len = sizeof(state);
if (hvn_rndis_query(sc, OID_GEN_MEDIA_CONNECT_STATUS,
&state, &len) == 0)
sc->sc_link_state = (state == NDIS_MEDIA_STATE_CONNECTED) ?
LINK_STATE_UP : LINK_STATE_DOWN;
}
int
hvn_nvs_attach(struct hvn_softc *sc)
{
const uint32_t protos[] = {
HVN_NVS_PROTO_VERSION_5, HVN_NVS_PROTO_VERSION_4,
HVN_NVS_PROTO_VERSION_2, HVN_NVS_PROTO_VERSION_1
};
struct hvn_nvs_init cmd;
struct hvn_nvs_init_resp *rsp;
struct hvn_nvs_ndis_init ncmd;
struct hvn_nvs_ndis_conf ccmd;
uint32_t ndisver, ringsize;
uint64_t tid;
int i;
sc->sc_nvsbuf = malloc(HVN_NVS_BUFSIZE, M_DEVBUF, M_ZERO |
(cold ? M_NOWAIT : M_WAITOK));
if (sc->sc_nvsbuf == NULL) {
DPRINTF("%s: failed to allocate channel data buffer\n",
sc->sc_dev.dv_xname);
return (-1);
}
/* We need to be able to fit all RNDIS control and data messages */
ringsize = HVN_RNDIS_CTLREQS *
(sizeof(struct hvn_nvs_rndis) + sizeof(struct vmbus_gpa)) +
HVN_TX_DESC * (sizeof(struct hvn_nvs_rndis) +
(HVN_TX_FRAGS + 1) * sizeof(struct vmbus_gpa));
sc->sc_chan->ch_flags &= ~CHF_BATCHED;
/* Associate our interrupt handler with the channel */
if (hv_channel_open(sc->sc_chan, ringsize, NULL, 0,
hvn_nvs_intr, sc)) {
DPRINTF("%s: failed to open channel\n", sc->sc_dev.dv_xname);
free(sc->sc_nvsbuf, M_DEVBUF, HVN_NVS_BUFSIZE);
return (-1);
}
hv_evcount_attach(sc->sc_chan, sc->sc_dev.dv_xname);
memset(&cmd, 0, sizeof(cmd));
cmd.nvs_type = HVN_NVS_TYPE_INIT;
for (i = 0; i < nitems(protos); i++) {
cmd.nvs_ver_min = cmd.nvs_ver_max = protos[i];
tid = atomic_inc_int_nv(&sc->sc_nvstid);
if (hvn_nvs_cmd(sc, &cmd, sizeof(cmd), tid, 100))
return (-1);
rsp = (struct hvn_nvs_init_resp *)&sc->sc_nvsrsp;
if (rsp->nvs_status == HVN_NVS_STATUS_OK) {
sc->sc_proto = protos[i];
break;
}
}
if (!sc->sc_proto) {
DPRINTF("%s: failed to negotiate NVSP version\n",
sc->sc_dev.dv_xname);
return (-1);
}
if (sc->sc_proto >= HVN_NVS_PROTO_VERSION_2) {
memset(&ccmd, 0, sizeof(ccmd));
ccmd.nvs_type = HVN_NVS_TYPE_NDIS_CONF;
ccmd.nvs_mtu = HVN_MAXMTU;
ccmd.nvs_caps = HVN_NVS_NDIS_CONF_VLAN;
tid = atomic_inc_int_nv(&sc->sc_nvstid);
if (hvn_nvs_cmd(sc, &ccmd, sizeof(ccmd), tid, 100))
return (-1);
}
memset(&ncmd, 0, sizeof(ncmd));
ncmd.nvs_type = HVN_NVS_TYPE_NDIS_INIT;
if (sc->sc_proto <= HVN_NVS_PROTO_VERSION_4)
ndisver = NDIS_VERSION_6_1;
else
ndisver = NDIS_VERSION_6_30;
ncmd.nvs_ndis_major = (ndisver & 0xffff0000) >> 16;
ncmd.nvs_ndis_minor = (ndisver & 0x0000ffff);
tid = atomic_inc_int_nv(&sc->sc_nvstid);
if (hvn_nvs_cmd(sc, &ncmd, sizeof(ncmd), tid, 100))
return (-1);
sc->sc_ndisver = ndisver;
return (0);
}
void
hvn_nvs_intr(void *arg)
{
struct hvn_softc *sc = arg;
struct ifnet *ifp = &sc->sc_ac.ac_if;
struct vmbus_chanpkt_hdr *cph;
struct hvn_nvs_hdr *nvs;
uint64_t rid;
uint32_t rlen;
int rv;
for (;;) {
rv = hv_channel_recv(sc->sc_chan, sc->sc_nvsbuf,
HVN_NVS_BUFSIZE, &rlen, &rid, 1);
if (rv != 0 || rlen == 0) {
if (rv != EAGAIN)
printf("%s: failed to receive an NVSP "
"packet\n", sc->sc_dev.dv_xname);
break;
}
cph = (struct vmbus_chanpkt_hdr *)sc->sc_nvsbuf;
nvs = (struct hvn_nvs_hdr *)VMBUS_CHANPKT_CONST_DATA(cph);
if (cph->cph_type == VMBUS_CHANPKT_TYPE_COMP) {
switch (nvs->nvs_type) {
case HVN_NVS_TYPE_INIT_RESP:
case HVN_NVS_TYPE_RXBUF_CONNRESP:
case HVN_NVS_TYPE_CHIM_CONNRESP:
case HVN_NVS_TYPE_SUBCH_RESP:
/* copy the response back */
memcpy(&sc->sc_nvsrsp, nvs, HVN_NVS_MSGSIZE);
sc->sc_nvsdone = 1;
wakeup_one(&sc->sc_nvsrsp);
break;
case HVN_NVS_TYPE_RNDIS_ACK:
hvn_txeof(sc, cph->cph_tid);
break;
default:
printf("%s: unhandled NVSP packet type %u "
"on completion\n", sc->sc_dev.dv_xname,
nvs->nvs_type);
}
} else if (cph->cph_type == VMBUS_CHANPKT_TYPE_RXBUF) {
switch (nvs->nvs_type) {
case HVN_NVS_TYPE_RNDIS:
hvn_rndis_input(sc, cph->cph_tid, cph);
break;
default:
printf("%s: unhandled NVSP packet type %u "
"on receive\n", sc->sc_dev.dv_xname,
nvs->nvs_type);
}
} else
printf("%s: unknown NVSP packet type %u\n",
sc->sc_dev.dv_xname, cph->cph_type);
}
if (ifq_is_oactive(&ifp->if_snd))
ifq_restart(&ifp->if_snd);
}
int
hvn_nvs_cmd(struct hvn_softc *sc, void *cmd, size_t cmdsize, uint64_t tid,
int timo)
{
struct hvn_nvs_hdr *hdr = cmd;
int tries = 10;
int rv, s;
KERNEL_ASSERT_LOCKED();
sc->sc_nvsdone = 0;
do {
rv = hv_channel_send(sc->sc_chan, cmd, cmdsize,
tid, VMBUS_CHANPKT_TYPE_INBAND,
timo ? VMBUS_CHANPKT_FLAG_RC : 0);
if (rv == EAGAIN) {
if (cold)
delay(1000);
else {
tsleep_nsec(cmd, PRIBIO, "nvsout",
USEC_TO_NSEC(1000));
}
} else if (rv) {
DPRINTF("%s: NVSP operation %u send error %d\n",
sc->sc_dev.dv_xname, hdr->nvs_type, rv);
return (rv);
}
} while (rv != 0 && --tries > 0);
if (tries == 0 && rv != 0) {
printf("%s: NVSP operation %u send error %d\n",
sc->sc_dev.dv_xname, hdr->nvs_type, rv);
return (rv);
}
if (timo == 0)
return (0);
do {
if (cold)
delay(1000);
else {
tsleep_nsec(sc, PRIBIO | PCATCH, "nvscmd",
USEC_TO_NSEC(1000));
}
s = splnet();
hvn_nvs_intr(sc);
splx(s);
} while (--timo > 0 && sc->sc_nvsdone != 1);
if (timo == 0 && sc->sc_nvsdone != 1) {
printf("%s: NVSP operation %u timed out\n",
sc->sc_dev.dv_xname, hdr->nvs_type);
return (ETIMEDOUT);
}
return (0);
}
int
hvn_nvs_ack(struct hvn_softc *sc, uint64_t tid)
{
struct hvn_nvs_rndis_ack cmd;
int tries = 5;
int rv;
cmd.nvs_type = HVN_NVS_TYPE_RNDIS_ACK;
cmd.nvs_status = HVN_NVS_STATUS_OK;
do {
rv = hv_channel_send(sc->sc_chan, &cmd, sizeof(cmd),
tid, VMBUS_CHANPKT_TYPE_COMP, 0);
if (rv == EAGAIN)
delay(10);
else if (rv) {
DPRINTF("%s: NVSP acknowledgement error %d\n",
sc->sc_dev.dv_xname, rv);
return (rv);
}
} while (rv != 0 && --tries > 0);
return (rv);
}
void
hvn_nvs_detach(struct hvn_softc *sc)
{
if (hv_channel_close(sc->sc_chan) == 0) {
free(sc->sc_nvsbuf, M_DEVBUF, HVN_NVS_BUFSIZE);
sc->sc_nvsbuf = NULL;
}
}
static inline struct rndis_cmd *
hvn_alloc_cmd(struct hvn_softc *sc)
{
struct rndis_cmd *rc;
mtx_enter(&sc->sc_cntl_fqlck);
while ((rc = TAILQ_FIRST(&sc->sc_cntl_fq)) == NULL)
msleep_nsec(&sc->sc_cntl_fq, &sc->sc_cntl_fqlck,
PRIBIO, "nvsalloc", INFSLP);
TAILQ_REMOVE(&sc->sc_cntl_fq, rc, rc_entry);
mtx_leave(&sc->sc_cntl_fqlck);
return (rc);
}
static inline void
hvn_submit_cmd(struct hvn_softc *sc, struct rndis_cmd *rc)
{
mtx_enter(&sc->sc_cntl_sqlck);
TAILQ_INSERT_TAIL(&sc->sc_cntl_sq, rc, rc_entry);
mtx_leave(&sc->sc_cntl_sqlck);
}
static inline struct rndis_cmd *
hvn_complete_cmd(struct hvn_softc *sc, uint32_t id)
{
struct rndis_cmd *rc;
mtx_enter(&sc->sc_cntl_sqlck);
TAILQ_FOREACH(rc, &sc->sc_cntl_sq, rc_entry) {
if (rc->rc_id == id) {
TAILQ_REMOVE(&sc->sc_cntl_sq, rc, rc_entry);
break;
}
}
mtx_leave(&sc->sc_cntl_sqlck);
if (rc != NULL) {
mtx_enter(&sc->sc_cntl_cqlck);
TAILQ_INSERT_TAIL(&sc->sc_cntl_cq, rc, rc_entry);
mtx_leave(&sc->sc_cntl_cqlck);
}
return (rc);
}
static inline void
hvn_release_cmd(struct hvn_softc *sc, struct rndis_cmd *rc)
{
mtx_enter(&sc->sc_cntl_cqlck);
TAILQ_REMOVE(&sc->sc_cntl_cq, rc, rc_entry);
mtx_leave(&sc->sc_cntl_cqlck);
}
static inline int
hvn_rollback_cmd(struct hvn_softc *sc, struct rndis_cmd *rc)
{
struct rndis_cmd *rn;
mtx_enter(&sc->sc_cntl_sqlck);
TAILQ_FOREACH(rn, &sc->sc_cntl_sq, rc_entry) {
if (rn == rc) {
TAILQ_REMOVE(&sc->sc_cntl_sq, rc, rc_entry);
mtx_leave(&sc->sc_cntl_sqlck);
return (0);
}
}
mtx_leave(&sc->sc_cntl_sqlck);
return (-1);
}
static inline void
hvn_free_cmd(struct hvn_softc *sc, struct rndis_cmd *rc)
{
memset(rc->rc_req, 0, sizeof(struct rndis_packet_msg));
memset(&rc->rc_cmp, 0, sizeof(rc->rc_cmp));
memset(&rc->rc_msg, 0, sizeof(rc->rc_msg));
mtx_enter(&sc->sc_cntl_fqlck);
TAILQ_INSERT_TAIL(&sc->sc_cntl_fq, rc, rc_entry);
mtx_leave(&sc->sc_cntl_fqlck);
wakeup(&sc->sc_cntl_fq);
}
int
hvn_rndis_attach(struct hvn_softc *sc)
{
struct rndis_init_req *req;
struct rndis_init_comp *cmp;
struct rndis_cmd *rc;
int i, rv;
/* RNDIS control message queues */
TAILQ_INIT(&sc->sc_cntl_sq);
TAILQ_INIT(&sc->sc_cntl_cq);
TAILQ_INIT(&sc->sc_cntl_fq);
mtx_init(&sc->sc_cntl_sqlck, IPL_NET);
mtx_init(&sc->sc_cntl_cqlck, IPL_NET);
mtx_init(&sc->sc_cntl_fqlck, IPL_NET);
for (i = 0; i < HVN_RNDIS_CTLREQS; i++) {
rc = &sc->sc_cntl_msgs[i];
if (bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1,
PAGE_SIZE, 0, BUS_DMA_WAITOK, &rc->rc_dmap)) {
DPRINTF("%s: failed to create RNDIS command map\n",
sc->sc_dev.dv_xname);
goto errout;
}
if (bus_dmamem_alloc(sc->sc_dmat, PAGE_SIZE, PAGE_SIZE,
0, &rc->rc_segs, 1, &rc->rc_nsegs, BUS_DMA_NOWAIT |
BUS_DMA_ZERO)) {
DPRINTF("%s: failed to allocate RNDIS command\n",
sc->sc_dev.dv_xname);
bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap);
goto errout;
}
if (bus_dmamem_map(sc->sc_dmat, &rc->rc_segs, rc->rc_nsegs,
PAGE_SIZE, (caddr_t *)&rc->rc_req, BUS_DMA_NOWAIT)) {
DPRINTF("%s: failed to allocate RNDIS command\n",
sc->sc_dev.dv_xname);
bus_dmamem_free(sc->sc_dmat, &rc->rc_segs,
rc->rc_nsegs);
bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap);
goto errout;
}
if (bus_dmamap_load(sc->sc_dmat, rc->rc_dmap, rc->rc_req,
PAGE_SIZE, NULL, BUS_DMA_WAITOK)) {
DPRINTF("%s: failed to load RNDIS command map\n",
sc->sc_dev.dv_xname);
bus_dmamem_free(sc->sc_dmat, &rc->rc_segs,
rc->rc_nsegs);
bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap);
goto errout;
}
rc->rc_gpa = atop(rc->rc_dmap->dm_segs[0].ds_addr);
TAILQ_INSERT_TAIL(&sc->sc_cntl_fq, rc, rc_entry);
}
rc = hvn_alloc_cmd(sc);
bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE,
BUS_DMASYNC_PREREAD);
rc->rc_id = atomic_inc_int_nv(&sc->sc_rndisrid);
req = rc->rc_req;
req->rm_type = REMOTE_NDIS_INITIALIZE_MSG;
req->rm_len = sizeof(*req);
req->rm_rid = rc->rc_id;
req->rm_ver_major = RNDIS_VERSION_MAJOR;
req->rm_ver_minor = RNDIS_VERSION_MINOR;
req->rm_max_xfersz = HVN_RNDIS_XFER_SIZE;
rc->rc_cmplen = sizeof(*cmp);
bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE,
BUS_DMASYNC_PREWRITE);
if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) {
DPRINTF("%s: INITIALIZE_MSG failed, error %d\n",
sc->sc_dev.dv_xname, rv);
hvn_free_cmd(sc, rc);
goto errout;
}
cmp = (struct rndis_init_comp *)&rc->rc_cmp;
if (cmp->rm_status != RNDIS_STATUS_SUCCESS) {
DPRINTF("%s: failed to init RNDIS, error %#x\n",
sc->sc_dev.dv_xname, cmp->rm_status);
hvn_free_cmd(sc, rc);
goto errout;
}
hvn_free_cmd(sc, rc);
/* Initialize RNDIS Data command */
memset(&sc->sc_data_msg, 0, sizeof(sc->sc_data_msg));
sc->sc_data_msg.nvs_type = HVN_NVS_TYPE_RNDIS;
sc->sc_data_msg.nvs_rndis_mtype = HVN_NVS_RNDIS_MTYPE_DATA;
sc->sc_data_msg.nvs_chim_idx = HVN_NVS_CHIM_IDX_INVALID;
return (0);
errout:
for (i = 0; i < HVN_RNDIS_CTLREQS; i++) {
rc = &sc->sc_cntl_msgs[i];
if (rc->rc_req == NULL)
continue;
TAILQ_REMOVE(&sc->sc_cntl_fq, rc, rc_entry);
bus_dmamem_free(sc->sc_dmat, &rc->rc_segs, rc->rc_nsegs);
rc->rc_req = NULL;
bus_dmamap_destroy(sc->sc_dmat, rc->rc_dmap);
}
return (-1);
}
int
hvn_set_capabilities(struct hvn_softc *sc)
{
struct ndis_offload_params params;
size_t len = sizeof(params);
memset(&params, 0, sizeof(params));
params.ndis_hdr.ndis_type = NDIS_OBJTYPE_DEFAULT;
if (sc->sc_ndisver < NDIS_VERSION_6_30) {
params.ndis_hdr.ndis_rev = NDIS_OFFLOAD_PARAMS_REV_2;
len = params.ndis_hdr.ndis_size = NDIS_OFFLOAD_PARAMS_SIZE_6_1;
} else {
params.ndis_hdr.ndis_rev = NDIS_OFFLOAD_PARAMS_REV_3;
len = params.ndis_hdr.ndis_size = NDIS_OFFLOAD_PARAMS_SIZE;
}
params.ndis_ip4csum = NDIS_OFFLOAD_PARAM_TXRX;
params.ndis_tcp4csum = NDIS_OFFLOAD_PARAM_TXRX;
params.ndis_tcp6csum = NDIS_OFFLOAD_PARAM_TXRX;
if (sc->sc_ndisver >= NDIS_VERSION_6_30) {
params.ndis_udp4csum = NDIS_OFFLOAD_PARAM_TXRX;
params.ndis_udp6csum = NDIS_OFFLOAD_PARAM_TXRX;
}
return (hvn_rndis_set(sc, OID_TCP_OFFLOAD_PARAMETERS, &params, len));
}
int
hvn_rndis_cmd(struct hvn_softc *sc, struct rndis_cmd *rc, int timo)
{
struct hvn_nvs_rndis *msg = &rc->rc_msg;
struct rndis_msghdr *hdr = rc->rc_req;
struct vmbus_gpa sgl[1];
int tries = 10;
int rv, s;
KERNEL_ASSERT_LOCKED();
KASSERT(timo > 0);
msg->nvs_type = HVN_NVS_TYPE_RNDIS;
msg->nvs_rndis_mtype = HVN_NVS_RNDIS_MTYPE_CTRL;
msg->nvs_chim_idx = HVN_NVS_CHIM_IDX_INVALID;
sgl[0].gpa_page = rc->rc_gpa;
sgl[0].gpa_len = hdr->rm_len;
sgl[0].gpa_ofs = 0;
rc->rc_done = 0;
hvn_submit_cmd(sc, rc);
do {
rv = hv_channel_send_sgl(sc->sc_chan, sgl, 1, &rc->rc_msg,
sizeof(*msg), rc->rc_id);
if (rv == EAGAIN) {
if (cold)
delay(100);
else {
tsleep_nsec(rc, PRIBIO, "rndisout",
USEC_TO_NSEC(100));
}
} else if (rv) {
DPRINTF("%s: RNDIS operation %u send error %d\n",
sc->sc_dev.dv_xname, hdr->rm_type, rv);
hvn_rollback_cmd(sc, rc);
return (rv);
}
} while (rv != 0 && --tries > 0);
if (tries == 0 && rv != 0) {
printf("%s: RNDIS operation %u send error %d\n",
sc->sc_dev.dv_xname, hdr->rm_type, rv);
return (rv);
}
bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE,
BUS_DMASYNC_POSTWRITE);
do {
if (cold)
delay(1000);
else {
tsleep_nsec(rc, PRIBIO | PCATCH, "rndiscmd",
USEC_TO_NSEC(1000));
}
s = splnet();
hvn_nvs_intr(sc);
splx(s);
} while (--timo > 0 && rc->rc_done != 1);
bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE,
BUS_DMASYNC_POSTREAD);
if (rc->rc_done != 1) {
rv = timo == 0 ? ETIMEDOUT : EINTR;
if (hvn_rollback_cmd(sc, rc)) {
hvn_release_cmd(sc, rc);
rv = 0;
} else if (rv == ETIMEDOUT) {
printf("%s: RNDIS operation %u timed out\n",
sc->sc_dev.dv_xname, hdr->rm_type);
}
return (rv);
}
hvn_release_cmd(sc, rc);
return (0);
}
void
hvn_rndis_input(struct hvn_softc *sc, uint64_t tid, void *arg)
{
struct ifnet *ifp = &sc->sc_ac.ac_if;
struct mbuf_list ml = MBUF_LIST_INITIALIZER();
struct vmbus_chanpkt_prplist *cp = arg;
uint32_t off, len, type;
int i;
if (sc->sc_rx_ring == NULL) {
DPRINTF("%s: invalid rx ring\n", sc->sc_dev.dv_xname);
return;
}
for (i = 0; i < cp->cp_range_cnt; i++) {
off = cp->cp_range[i].gpa_ofs;
len = cp->cp_range[i].gpa_len;
KASSERT(off + len <= sc->sc_rx_size);
KASSERT(len >= RNDIS_HEADER_OFFSET + 4);
memcpy(&type, (caddr_t)sc->sc_rx_ring + off, sizeof(type));
switch (type) {
/* data message */
case REMOTE_NDIS_PACKET_MSG:
hvn_rxeof(sc, (caddr_t)sc->sc_rx_ring +
off, len, &ml);
break;
/* completion messages */
case REMOTE_NDIS_INITIALIZE_CMPLT:
case REMOTE_NDIS_QUERY_CMPLT:
case REMOTE_NDIS_SET_CMPLT:
case REMOTE_NDIS_RESET_CMPLT:
case REMOTE_NDIS_KEEPALIVE_CMPLT:
hvn_rndis_complete(sc, (caddr_t)sc->sc_rx_ring +
off, len);
break;
/* notification message */
case REMOTE_NDIS_INDICATE_STATUS_MSG:
hvn_rndis_status(sc, (caddr_t)sc->sc_rx_ring +
off, len);
break;
default:
printf("%s: unhandled RNDIS message type %u\n",
sc->sc_dev.dv_xname, type);
}
}
hvn_nvs_ack(sc, tid);
if (ifp->if_flags & IFF_RUNNING)
if_input(ifp, &ml);
else
ml_purge(&ml);
}
static inline struct mbuf *
hvn_devget(struct hvn_softc *sc, caddr_t buf, uint32_t len)
{
struct mbuf *m;
if (len + ETHER_ALIGN <= MHLEN)
MGETHDR(m, M_NOWAIT, MT_DATA);
else
m = MCLGETL(NULL, M_NOWAIT, len + ETHER_ALIGN);
if (m == NULL)
return (NULL);
m->m_len = m->m_pkthdr.len = len;
m_adj(m, ETHER_ALIGN);
if (m_copyback(m, 0, len, buf, M_NOWAIT)) {
m_freem(m);
return (NULL);
}
return (m);
}
void
hvn_rxeof(struct hvn_softc *sc, caddr_t buf, uint32_t len, struct mbuf_list *ml)
{
struct ifnet *ifp = &sc->sc_ac.ac_if;
struct rndis_packet_msg *pkt;
struct rndis_pktinfo *pi;
uint32_t csum, vlan;
struct mbuf *m;
if (!(ifp->if_flags & IFF_RUNNING))
return;
if (len < sizeof(*pkt)) {
printf("%s: data packet too short: %u\n",
sc->sc_dev.dv_xname, len);
return;
}
pkt = (struct rndis_packet_msg *)buf;
if (pkt->rm_dataoffset + pkt->rm_datalen > len) {
printf("%s: data packet out of bounds: %u@%u\n",
sc->sc_dev.dv_xname, pkt->rm_dataoffset, pkt->rm_datalen);
return;
}
if ((m = hvn_devget(sc, buf + RNDIS_HEADER_OFFSET + pkt->rm_dataoffset,
pkt->rm_datalen)) == NULL) {
ifp->if_ierrors++;
return;
}
if (pkt->rm_pktinfooffset + pkt->rm_pktinfolen > len) {
printf("%s: pktinfo is out of bounds: %u@%u vs %u\n",
sc->sc_dev.dv_xname, pkt->rm_pktinfolen,
pkt->rm_pktinfooffset, len);
goto done;
}
pi = (struct rndis_pktinfo *)((caddr_t)pkt + RNDIS_HEADER_OFFSET +
pkt->rm_pktinfooffset);
while (pkt->rm_pktinfolen > 0) {
if (pi->rm_size > pkt->rm_pktinfolen) {
printf("%s: invalid pktinfo size: %u/%u\n",
sc->sc_dev.dv_xname, pi->rm_size,
pkt->rm_pktinfolen);
break;
}
switch (pi->rm_type) {
case NDIS_PKTINFO_TYPE_CSUM:
memcpy(&csum, pi->rm_data, sizeof(csum));
if (csum & NDIS_RXCSUM_INFO_IPCS_OK)
m->m_pkthdr.csum_flags |= M_IPV4_CSUM_IN_OK;
if (csum & NDIS_RXCSUM_INFO_TCPCS_OK)
m->m_pkthdr.csum_flags |= M_TCP_CSUM_IN_OK;
if (csum & NDIS_RXCSUM_INFO_UDPCS_OK)
m->m_pkthdr.csum_flags |= M_UDP_CSUM_IN_OK;
break;
case NDIS_PKTINFO_TYPE_VLAN:
memcpy(&vlan, pi->rm_data, sizeof(vlan));
#if NVLAN > 0
if (vlan != 0xffffffff) {
m->m_pkthdr.ether_vtag =
NDIS_VLAN_INFO_ID(vlan) |
(NDIS_VLAN_INFO_PRI(vlan) << EVL_PRIO_BITS);
m->m_flags |= M_VLANTAG;
}
#endif
break;
default:
DPRINTF("%s: unhandled pktinfo type %u\n",
sc->sc_dev.dv_xname, pi->rm_type);
}
pkt->rm_pktinfolen -= pi->rm_size;
pi = (struct rndis_pktinfo *)((caddr_t)pi + pi->rm_size);
}
done:
ml_enqueue(ml, m);
}
void
hvn_rndis_complete(struct hvn_softc *sc, caddr_t buf, uint32_t len)
{
struct rndis_cmd *rc;
uint32_t id;
memcpy(&id, buf + RNDIS_HEADER_OFFSET, sizeof(id));
if ((rc = hvn_complete_cmd(sc, id)) != NULL) {
if (len < rc->rc_cmplen)
printf("%s: RNDIS response %u too short: %u\n",
sc->sc_dev.dv_xname, id, len);
else
memcpy(&rc->rc_cmp, buf, rc->rc_cmplen);
if (len > rc->rc_cmplen &&
len - rc->rc_cmplen > HVN_RNDIS_BUFSIZE)
printf("%s: RNDIS response %u too large: %u\n",
sc->sc_dev.dv_xname, id, len);
else if (len > rc->rc_cmplen)
memcpy(&rc->rc_cmpbuf, buf + rc->rc_cmplen,
len - rc->rc_cmplen);
rc->rc_done = 1;
wakeup_one(rc);
} else
DPRINTF("%s: failed to complete RNDIS request id %u\n",
sc->sc_dev.dv_xname, id);
}
int
hvn_rndis_output(struct hvn_softc *sc, struct hvn_tx_desc *txd)
{
uint64_t rid = (uint64_t)txd->txd_id << 32;
int rv;
rv = hv_channel_send_sgl(sc->sc_chan, txd->txd_sgl, txd->txd_nsge,
&sc->sc_data_msg, sizeof(sc->sc_data_msg), rid);
if (rv) {
DPRINTF("%s: RNDIS data send error %d\n",
sc->sc_dev.dv_xname, rv);
return (rv);
}
return (0);
}
void
hvn_rndis_status(struct hvn_softc *sc, caddr_t buf, uint32_t len)
{
uint32_t status;
memcpy(&status, buf + RNDIS_HEADER_OFFSET, sizeof(status));
switch (status) {
case RNDIS_STATUS_MEDIA_CONNECT:
sc->sc_link_state = LINK_STATE_UP;
break;
case RNDIS_STATUS_MEDIA_DISCONNECT:
sc->sc_link_state = LINK_STATE_DOWN;
break;
/* Ignore these */
case RNDIS_STATUS_OFFLOAD_CURRENT_CONFIG:
return;
default:
DPRINTF("%s: unhandled status %#x\n", sc->sc_dev.dv_xname,
status);
return;
}
KERNEL_LOCK();
hvn_link_status(sc);
KERNEL_UNLOCK();
}
int
hvn_rndis_query(struct hvn_softc *sc, uint32_t oid, void *res, size_t *length)
{
struct rndis_cmd *rc;
struct rndis_query_req *req;
struct rndis_query_comp *cmp;
size_t olength = *length;
int rv;
rc = hvn_alloc_cmd(sc);
bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE,
BUS_DMASYNC_PREREAD);
rc->rc_id = atomic_inc_int_nv(&sc->sc_rndisrid);
req = rc->rc_req;
req->rm_type = REMOTE_NDIS_QUERY_MSG;
req->rm_len = sizeof(*req);
req->rm_rid = rc->rc_id;
req->rm_oid = oid;
req->rm_infobufoffset = sizeof(*req) - RNDIS_HEADER_OFFSET;
rc->rc_cmplen = sizeof(*cmp);
bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE,
BUS_DMASYNC_PREWRITE);
if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) {
DPRINTF("%s: QUERY_MSG failed, error %d\n",
sc->sc_dev.dv_xname, rv);
hvn_free_cmd(sc, rc);
return (rv);
}
cmp = (struct rndis_query_comp *)&rc->rc_cmp;
switch (cmp->rm_status) {
case RNDIS_STATUS_SUCCESS:
if (cmp->rm_infobuflen > olength) {
rv = EINVAL;
break;
}
memcpy(res, rc->rc_cmpbuf, cmp->rm_infobuflen);
*length = cmp->rm_infobuflen;
break;
default:
*length = 0;
rv = EIO;
}
hvn_free_cmd(sc, rc);
return (rv);
}
int
hvn_rndis_set(struct hvn_softc *sc, uint32_t oid, void *data, size_t length)
{
struct rndis_cmd *rc;
struct rndis_set_req *req;
struct rndis_set_comp *cmp;
int rv;
rc = hvn_alloc_cmd(sc);
bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE,
BUS_DMASYNC_PREREAD);
rc->rc_id = atomic_inc_int_nv(&sc->sc_rndisrid);
req = rc->rc_req;
req->rm_type = REMOTE_NDIS_SET_MSG;
req->rm_len = sizeof(*req) + length;
req->rm_rid = rc->rc_id;
req->rm_oid = oid;
req->rm_infobufoffset = sizeof(*req) - RNDIS_HEADER_OFFSET;
rc->rc_cmplen = sizeof(*cmp);
if (length > 0) {
KASSERT(sizeof(*req) + length < PAGE_SIZE);
req->rm_infobuflen = length;
memcpy((caddr_t)(req + 1), data, length);
}
bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE,
BUS_DMASYNC_PREWRITE);
if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0) {
DPRINTF("%s: SET_MSG failed, error %d\n",
sc->sc_dev.dv_xname, rv);
hvn_free_cmd(sc, rc);
return (rv);
}
cmp = (struct rndis_set_comp *)&rc->rc_cmp;
if (cmp->rm_status != RNDIS_STATUS_SUCCESS)
rv = EIO;
hvn_free_cmd(sc, rc);
return (rv);
}
int
hvn_rndis_close(struct hvn_softc *sc)
{
uint32_t filter = 0;
int rv;
rv = hvn_rndis_set(sc, OID_GEN_CURRENT_PACKET_FILTER,
&filter, sizeof(filter));
if (rv)
DPRINTF("%s: failed to clear RNDIS filter\n",
sc->sc_dev.dv_xname);
return (rv);
}
void
hvn_rndis_detach(struct hvn_softc *sc)
{
struct rndis_cmd *rc;
struct rndis_halt_req *req;
int rv;
rc = hvn_alloc_cmd(sc);
bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE,
BUS_DMASYNC_PREREAD);
rc->rc_id = atomic_inc_int_nv(&sc->sc_rndisrid);
req = rc->rc_req;
req->rm_type = REMOTE_NDIS_HALT_MSG;
req->rm_len = sizeof(*req);
req->rm_rid = rc->rc_id;
bus_dmamap_sync(sc->sc_dmat, rc->rc_dmap, 0, PAGE_SIZE,
BUS_DMASYNC_PREWRITE);
if ((rv = hvn_rndis_cmd(sc, rc, 500)) != 0)
DPRINTF("%s: HALT_MSG failed, error %d\n",
sc->sc_dev.dv_xname, rv);
hvn_free_cmd(sc, rc);
}
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