/*
* Start output on the pflog interface.
*/
void
pflogstart(struct ifnet *ifp)
{
struct mbuf *m;
#ifndef __FreeBSD__
int s;
#endif
for (;;) {
#ifdef __FreeBSD__
IF_LOCK(&ifp->if_snd);
_IF_DROP(&ifp->if_snd);
_IF_DEQUEUE(&ifp->if_snd, m);
if (m == NULL) {
IF_UNLOCK(&ifp->if_snd);
return;
}
else
m_freem(m);
IF_UNLOCK(&ifp->if_snd);
#else
s = splimp();
IF_DROP(&ifp->if_snd);
IF_DEQUEUE(&ifp->if_snd, m);
splx(s);
if (m == NULL)
return;
else
m_freem(m);
#endif
}
}
static void
bt3c_forward(node_p node, hook_p hook, void *arg1, int arg2)
{
bt3c_softc_p sc = (bt3c_softc_p) NG_NODE_PRIVATE(node);
struct mbuf *m = NULL;
int error;
if (sc == NULL)
return;
if (sc->hook != NULL && NG_HOOK_IS_VALID(sc->hook)) {
for (;;) {
IF_DEQUEUE(&sc->inq, m);
if (m == NULL)
break;
NG_SEND_DATA_ONLY(error, sc->hook, m);
if (error != 0)
NG_BT3C_STAT_IERROR(sc->stat);
}
} else {
IF_LOCK(&sc->inq);
for (;;) {
_IF_DEQUEUE(&sc->inq, m);
if (m == NULL)
break;
NG_BT3C_STAT_IERROR(sc->stat);
NG_FREE_M(m);
}
IF_UNLOCK(&sc->inq);
}
} /* bt3c_forward */
void
ieee80211_flush_ifq(struct ifqueue* ifq, struct ieee80211vap* vap)
{
struct ieee80211_node* ni;
struct mbuf* m;
struct mbuf** mprev;
IF_LOCK(ifq);
mprev = &ifq->ifq_head;
while ((m = *mprev) != NULL) {
ni = (struct ieee80211_node*)m->m_pkthdr.rcvif;
if (ni != NULL && ni->ni_vap == vap) {
*mprev = m->m_nextpkt;
// remove from list
ifq->ifq_len--;
m_freem(m);
ieee80211_free_node(ni);
// reclaim ref
} else
mprev = &m->m_nextpkt;
}
// recalculate tail ptr
m = ifq->ifq_head;
for (; m != NULL && m->m_nextpkt != NULL; m = m->m_nextpkt);
ifq->ifq_tail = m;
IF_UNLOCK(ifq);
}
/*---------------------------------------------------------------------------*
* read from trace device
*---------------------------------------------------------------------------*/
static int
i4btrcread(dev_t dev, struct uio * uio, int ioflag)
{
struct mbuf *m;
int x;
int error = 0;
int unit = minor(dev);
if(!(device_state[unit] & ST_ISOPEN))
return(EIO);
x = SPLI4B();
IF_LOCK(&trace_queue[unit]);
while(IF_QEMPTY(&trace_queue[unit]) && (device_state[unit] & ST_ISOPEN))
{
device_state[unit] |= ST_WAITDATA;
if((error = msleep((caddr_t) &trace_queue[unit],
&trace_queue[unit].ifq_mtx,
TTIPRI | PCATCH,
"bitrc", 0 )) != 0)
{
device_state[unit] &= ~ST_WAITDATA;
IF_UNLOCK(&trace_queue[unit]);
splx(x);
return(error);
}
}
_IF_DEQUEUE(&trace_queue[unit], m);
IF_UNLOCK(&trace_queue[unit]);
if(m && m->m_len)
error = uiomove(m->m_data, m->m_len, uio);
else
error = EIO;
if(m)
i4b_Bfreembuf(m);
splx(x);
return(error);
}
/*
* Accept data from the hook and queue it for output.
*/
Static int
ng_udbp_rcvdata(hook_p hook, item_p item)
{
const udbp_p sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
int error;
struct ifqueue *xmitq_p;
int s;
struct mbuf *m;
meta_p meta;
NGI_GET_M(item, m);
NGI_GET_META(item, meta);
NG_FREE_ITEM(item);
/*
* Now queue the data for when it can be sent
*/
if (meta && meta->priority > 0) {
xmitq_p = (&sc->xmitq_hipri);
} else {
xmitq_p = (&sc->xmitq);
}
s = splusb();
IF_LOCK(xmitq_p);
if (_IF_QFULL(xmitq_p)) {
_IF_DROP(xmitq_p);
IF_UNLOCK(xmitq_p);
splx(s);
error = ENOBUFS;
goto bad;
}
_IF_ENQUEUE(xmitq_p, m);
IF_UNLOCK(xmitq_p);
if (!(sc->flags & OUT_BUSY))
udbp_setup_out_transfer(sc);
splx(s);
return (0);
bad: /*
* It was an error case.
* check if we need to free the mbuf, and then return the error
*/
NG_FREE_M(m);
NG_FREE_META(meta);
return (error);
}
/**
* Periodic timer tick for slow management operations
*
* @param arg Device to check
*/
static void cvm_do_timer(void *arg)
{
static int port;
static int updated;
if (port < CVMX_PIP_NUM_INPUT_PORTS) {
if (cvm_oct_device[port]) {
int queues_per_port;
int qos;
cvm_oct_private_t *priv = (cvm_oct_private_t *)cvm_oct_device[port]->if_softc;
cvm_oct_common_poll(priv->ifp);
if (priv->need_link_update) {
updated++;
taskqueue_enqueue(cvm_oct_link_taskq, &priv->link_task);
}
queues_per_port = cvmx_pko_get_num_queues(port);
/* Drain any pending packets in the free list */
for (qos = 0; qos < queues_per_port; qos++) {
if (_IF_QLEN(&priv->tx_free_queue[qos]) > 0) {
IF_LOCK(&priv->tx_free_queue[qos]);
while (_IF_QLEN(&priv->tx_free_queue[qos]) > cvmx_fau_fetch_and_add32(priv->fau+qos*4, 0)) {
struct mbuf *m;
_IF_DEQUEUE(&priv->tx_free_queue[qos], m);
m_freem(m);
}
IF_UNLOCK(&priv->tx_free_queue[qos]);
/*
* XXX locking!
*/
priv->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
}
}
}
port++;
/* Poll the next port in a 50th of a second.
This spreads the polling of ports out a little bit */
callout_reset(&cvm_oct_poll_timer, hz / 50, cvm_do_timer, NULL);
} else {
port = 0;
/* If any updates were made in this run, continue iterating at
* 1/50th of a second, so that if a link has merely gone down
* temporarily (e.g. because of interface reinitialization) it
* will not be forced to stay down for an entire second.
*/
if (updated > 0) {
updated = 0;
callout_reset(&cvm_oct_poll_timer, hz / 50, cvm_do_timer, NULL);
} else {
/* All ports have been polled. Start the next iteration through
the ports in one second */
callout_reset(&cvm_oct_poll_timer, hz, cvm_do_timer, NULL);
}
}
}
/*
* Start output on the pflog interface.
*/
static void
pflogstart(struct ifnet *ifp)
{
struct mbuf *m;
for (;;) {
IF_LOCK(&ifp->if_snd);
_IF_DROP(&ifp->if_snd);
_IF_DEQUEUE(&ifp->if_snd, m);
IF_UNLOCK(&ifp->if_snd);
if (m == NULL)
return;
else
m_freem(m);
}
}
static int
ng_bt3c_rcvdata(hook_p hook, item_p item)
{
bt3c_softc_p sc = (bt3c_softc_p)NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
struct mbuf *m = NULL;
int error = 0;
if (sc == NULL) {
error = EHOSTDOWN;
goto out;
}
if (hook != sc->hook) {
error = EINVAL;
goto out;
}
NGI_GET_M(item, m);
IF_LOCK(&sc->outq);
if (_IF_QFULL(&sc->outq)) {
NG_BT3C_ERR(sc->dev,
"Outgoing queue is full. Dropping mbuf, len=%d\n", m->m_pkthdr.len);
_IF_DROP(&sc->outq);
NG_BT3C_STAT_OERROR(sc->stat);
NG_FREE_M(m);
} else
_IF_ENQUEUE(&sc->outq, m);
IF_UNLOCK(&sc->outq);
error = ng_send_fn(sc->node, NULL, bt3c_send, NULL, 0 /* new send */);
out:
NG_FREE_ITEM(item);
return (error);
} /* ng_bt3c_rcvdata */
/*---------------------------------------------------------------------------*
* get_trace_data_from_l1()
* ------------------------
* is called from layer 1, adds timestamp to trace data and puts
* it into a queue, from which it can be read from the i4btrc
* device. The unit number in the trace header selects the minor
* device's queue the data is put into.
*---------------------------------------------------------------------------*/
int
get_trace_data_from_l1(i4b_trace_hdr_t *hdr, int len, char *buf)
{
struct mbuf *m;
int x;
int unit;
int trunc = 0;
int totlen = len + sizeof(i4b_trace_hdr_t);
/*
* for telephony (or better non-HDLC HSCX mode) we get
* (MCLBYTE + sizeof(i4b_trace_hdr_t)) length packets
* to put into the queue to userland. because of this
* we detect this situation, strip the length to MCLBYTES
* max size, and infor the userland program of this fact
* by putting the no of truncated bytes into hdr->trunc.
*/
if(totlen > MCLBYTES)
{
trunc = 1;
hdr->trunc = totlen - MCLBYTES;
totlen = MCLBYTES;
}
else
{
hdr->trunc = 0;
}
/* set length of trace record */
hdr->length = totlen;
/* check valid unit no */
if((unit = hdr->unit) > NI4BTRC)
{
printf("i4b_trace: get_trace_data_from_l1 - unit > NI4BTRC!\n");
return(0);
}
/* get mbuf */
if(!(m = i4b_Bgetmbuf(totlen)))
{
printf("i4b_trace: get_trace_data_from_l1 - i4b_getmbuf() failed!\n");
return(0);
}
/* check if we are in analyzemode */
if(analyzemode && (unit == rxunit || unit == txunit))
{
if(unit == rxunit)
hdr->dir = FROM_NT;
else
hdr->dir = FROM_TE;
unit = outunit;
}
IF_LOCK(&trace_queue[unit]);
if(_IF_QFULL(&trace_queue[unit]))
{
struct mbuf *m1;
x = SPLI4B();
_IF_DEQUEUE(&trace_queue[unit], m1);
splx(x);
i4b_Bfreembuf(m1);
}
/* copy trace header */
memcpy(m->m_data, hdr, sizeof(i4b_trace_hdr_t));
/* copy trace data */
if(trunc)
memcpy(&m->m_data[sizeof(i4b_trace_hdr_t)], buf, totlen-sizeof(i4b_trace_hdr_t));
else
memcpy(&m->m_data[sizeof(i4b_trace_hdr_t)], buf, len);
x = SPLI4B();
_IF_ENQUEUE(&trace_queue[unit], m);
IF_UNLOCK(&trace_queue[unit]);
if(device_state[unit] & ST_WAITDATA)
{
device_state[unit] &= ~ST_WAITDATA;
wakeup((caddr_t) &trace_queue[unit]);
}
splx(x);
return(1);
}
static void
bt3c_receive(bt3c_softc_p sc)
{
u_int16_t i, count, c;
/* Receive data from the card */
bt3c_read(sc, 0x7006, count);
NG_BT3C_INFO(sc->dev, "The card has %d characters\n", count);
bt3c_set_address(sc, 0x7480);
for (i = 0; i < count; i++) {
/* Allocate new mbuf if needed */
if (sc->m == NULL) {
sc->state = NG_BT3C_W4_PKT_IND;
sc->want = 1;
MGETHDR(sc->m, M_NOWAIT, MT_DATA);
if (sc->m == NULL) {
NG_BT3C_ERR(sc->dev, "Could not get mbuf\n");
NG_BT3C_STAT_IERROR(sc->stat);
break; /* XXX lost of sync */
}
if (!(MCLGET(sc->m, M_NOWAIT))) {
NG_FREE_M(sc->m);
NG_BT3C_ERR(sc->dev, "Could not get cluster\n");
NG_BT3C_STAT_IERROR(sc->stat);
break; /* XXX lost of sync */
}
sc->m->m_len = sc->m->m_pkthdr.len = 0;
}
/* Read and append character to mbuf */
bt3c_read_data(sc, c);
if (sc->m->m_pkthdr.len >= MCLBYTES) {
NG_BT3C_ERR(sc->dev, "Oversized frame\n");
NG_FREE_M(sc->m);
sc->state = NG_BT3C_W4_PKT_IND;
sc->want = 1;
break; /* XXX lost of sync */
}
mtod(sc->m, u_int8_t *)[sc->m->m_len ++] = (u_int8_t) c;
sc->m->m_pkthdr.len ++;
NG_BT3C_INFO(sc->dev,
"Got char %#x, want=%d, got=%d\n", c, sc->want, sc->m->m_pkthdr.len);
if (sc->m->m_pkthdr.len < sc->want)
continue; /* wait for more */
switch (sc->state) {
/* Got packet indicator */
case NG_BT3C_W4_PKT_IND:
NG_BT3C_INFO(sc->dev,
"Got packet indicator %#x\n", *mtod(sc->m, u_int8_t *));
sc->state = NG_BT3C_W4_PKT_HDR;
/*
* Since packet indicator included in the packet
* header just set sc->want to sizeof(packet header).
*/
switch (*mtod(sc->m, u_int8_t *)) {
case NG_HCI_ACL_DATA_PKT:
sc->want = sizeof(ng_hci_acldata_pkt_t);
break;
case NG_HCI_SCO_DATA_PKT:
sc->want = sizeof(ng_hci_scodata_pkt_t);
break;
case NG_HCI_EVENT_PKT:
sc->want = sizeof(ng_hci_event_pkt_t);
break;
default:
NG_BT3C_ERR(sc->dev,
"Ignoring unknown packet type=%#x\n", *mtod(sc->m, u_int8_t *));
NG_BT3C_STAT_IERROR(sc->stat);
NG_FREE_M(sc->m);
sc->state = NG_BT3C_W4_PKT_IND;
sc->want = 1;
break;
}
break;
/* Got packet header */
case NG_BT3C_W4_PKT_HDR:
sc->state = NG_BT3C_W4_PKT_DATA;
switch (*mtod(sc->m, u_int8_t *)) {
case NG_HCI_ACL_DATA_PKT:
c = le16toh(mtod(sc->m,
ng_hci_acldata_pkt_t *)->length);
break;
case NG_HCI_SCO_DATA_PKT:
c = mtod(sc->m, ng_hci_scodata_pkt_t*)->length;
break;
case NG_HCI_EVENT_PKT:
c = mtod(sc->m, ng_hci_event_pkt_t *)->length;
break;
default:
KASSERT(0,
("Invalid packet type=%#x\n", *mtod(sc->m, u_int8_t *)));
break;
}
NG_BT3C_INFO(sc->dev,
"Got packet header, packet type=%#x, got so far %d, payload size=%d\n",
*mtod(sc->m, u_int8_t *), sc->m->m_pkthdr.len,
c);
if (c > 0) {
sc->want += c;
break;
}
/* else FALLTHROUGH and deliver frame */
/* XXX is this true? should we deliver empty frame? */
/* Got packet data */
case NG_BT3C_W4_PKT_DATA:
NG_BT3C_INFO(sc->dev,
"Got full packet, packet type=%#x, packet size=%d\n",
*mtod(sc->m, u_int8_t *), sc->m->m_pkthdr.len);
NG_BT3C_STAT_BYTES_RECV(sc->stat, sc->m->m_pkthdr.len);
NG_BT3C_STAT_PCKTS_RECV(sc->stat);
IF_LOCK(&sc->inq);
if (_IF_QFULL(&sc->inq)) {
NG_BT3C_ERR(sc->dev,
"Incoming queue is full. Dropping mbuf, len=%d\n", sc->m->m_pkthdr.len);
NG_BT3C_STAT_IERROR(sc->stat);
NG_FREE_M(sc->m);
} else {
_IF_ENQUEUE(&sc->inq, sc->m);
sc->m = NULL;
}
IF_UNLOCK(&sc->inq);
sc->state = NG_BT3C_W4_PKT_IND;
sc->want = 1;
break;
default:
KASSERT(0,
("Invalid node state=%d", sc->state));
break;
}
}
bt3c_write(sc, 0x7006, 0x0000);
} /* bt3c_receive */
/**
* Packet transmit
*
* @param m Packet to send
* @param dev Device info structure
* @return Always returns zero
*/
int cvm_oct_xmit(struct mbuf *m, struct ifnet *ifp)
{
cvmx_pko_command_word0_t pko_command;
cvmx_buf_ptr_t hw_buffer;
int dropped;
int qos;
cvm_oct_private_t *priv = (cvm_oct_private_t *)ifp->if_softc;
int32_t in_use;
int32_t buffers_to_free;
cvmx_wqe_t *work;
/* Prefetch the private data structure.
It is larger that one cache line */
CVMX_PREFETCH(priv, 0);
/* Start off assuming no drop */
dropped = 0;
/* The check on CVMX_PKO_QUEUES_PER_PORT_* is designed to completely
remove "qos" in the event neither interface supports multiple queues
per port */
if ((CVMX_PKO_QUEUES_PER_PORT_INTERFACE0 > 1) ||
(CVMX_PKO_QUEUES_PER_PORT_INTERFACE1 > 1)) {
qos = GET_MBUF_QOS(m);
if (qos <= 0)
qos = 0;
else if (qos >= cvmx_pko_get_num_queues(priv->port))
qos = 0;
} else
qos = 0;
/* The CN3XXX series of parts has an errata (GMX-401) which causes the
GMX block to hang if a collision occurs towards the end of a
<68 byte packet. As a workaround for this, we pad packets to be
68 bytes whenever we are in half duplex mode. We don't handle
the case of having a small packet but no room to add the padding.
The kernel should always give us at least a cache line */
if (__predict_false(m->m_pkthdr.len < 64) && OCTEON_IS_MODEL(OCTEON_CN3XXX)) {
cvmx_gmxx_prtx_cfg_t gmx_prt_cfg;
int interface = INTERFACE(priv->port);
int index = INDEX(priv->port);
if (interface < 2) {
/* We only need to pad packet in half duplex mode */
gmx_prt_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
if (gmx_prt_cfg.s.duplex == 0) {
static uint8_t pad[64];
if (!m_append(m, sizeof pad - m->m_pkthdr.len, pad))
printf("%s: unable to padd small packet.", __func__);
}
}
}
#ifdef OCTEON_VENDOR_RADISYS
/*
* The RSYS4GBE will hang if asked to transmit a packet less than 60 bytes.
*/
if (__predict_false(m->m_pkthdr.len < 60) &&
cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_CUST_RADISYS_RSYS4GBE) {
static uint8_t pad[60];
if (!m_append(m, sizeof pad - m->m_pkthdr.len, pad))
printf("%s: unable to pad small packet.", __func__);
}
#endif
/*
* If the packet is not fragmented.
*/
if (m->m_pkthdr.len == m->m_len) {
/* Build the PKO buffer pointer */
hw_buffer.u64 = 0;
hw_buffer.s.addr = cvmx_ptr_to_phys(m->m_data);
hw_buffer.s.pool = 0;
hw_buffer.s.size = m->m_len;
/* Build the PKO command */
pko_command.u64 = 0;
pko_command.s.segs = 1;
pko_command.s.dontfree = 1; /* Do not put this buffer into the FPA. */
work = NULL;
} else {
struct mbuf *n;
unsigned segs;
uint64_t *gp;
/*
* The packet is fragmented, we need to send a list of segments
* in memory we borrow from the WQE pool.
*/
work = cvmx_fpa_alloc(CVMX_FPA_WQE_POOL);
if (work == NULL) {
m_freem(m);
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
return 1;
}
segs = 0;
gp = (uint64_t *)work;
for (n = m; n != NULL; n = n->m_next) {
if (segs == CVMX_FPA_WQE_POOL_SIZE / sizeof (uint64_t))
panic("%s: too many segments in packet; call m_collapse().", __func__);
/* Build the PKO buffer pointer */
hw_buffer.u64 = 0;
hw_buffer.s.i = 1; /* Do not put this buffer into the FPA. */
hw_buffer.s.addr = cvmx_ptr_to_phys(n->m_data);
hw_buffer.s.pool = 0;
hw_buffer.s.size = n->m_len;
*gp++ = hw_buffer.u64;
segs++;
}
/* Build the PKO buffer gather list pointer */
hw_buffer.u64 = 0;
hw_buffer.s.addr = cvmx_ptr_to_phys(work);
hw_buffer.s.pool = CVMX_FPA_WQE_POOL;
hw_buffer.s.size = segs;
/* Build the PKO command */
pko_command.u64 = 0;
pko_command.s.segs = segs;
pko_command.s.gather = 1;
pko_command.s.dontfree = 0; /* Put the WQE above back into the FPA. */
}
/* Finish building the PKO command */
pko_command.s.n2 = 1; /* Don't pollute L2 with the outgoing packet */
pko_command.s.reg0 = priv->fau+qos*4;
pko_command.s.total_bytes = m->m_pkthdr.len;
pko_command.s.size0 = CVMX_FAU_OP_SIZE_32;
pko_command.s.subone0 = 1;
/* Check if we can use the hardware checksumming */
if ((m->m_pkthdr.csum_flags & (CSUM_TCP | CSUM_UDP)) != 0) {
/* Use hardware checksum calc */
pko_command.s.ipoffp1 = ETHER_HDR_LEN + 1;
}
/*
* XXX
* Could use a different free queue (and different FAU address) per
* core instead of per QoS, to reduce contention here.
*/
IF_LOCK(&priv->tx_free_queue[qos]);
/* Get the number of mbufs in use by the hardware */
in_use = cvmx_fau_fetch_and_add32(priv->fau+qos*4, 1);
buffers_to_free = cvmx_fau_fetch_and_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, 0);
cvmx_pko_send_packet_prepare(priv->port, priv->queue + qos, CVMX_PKO_LOCK_CMD_QUEUE);
/* Drop this packet if we have too many already queued to the HW */
if (_IF_QFULL(&priv->tx_free_queue[qos])) {
dropped = 1;
}
/* Send the packet to the output queue */
else
if (__predict_false(cvmx_pko_send_packet_finish(priv->port, priv->queue + qos, pko_command, hw_buffer, CVMX_PKO_LOCK_CMD_QUEUE))) {
DEBUGPRINT("%s: Failed to send the packet\n", if_name(ifp));
dropped = 1;
}
if (__predict_false(dropped)) {
m_freem(m);
cvmx_fau_atomic_add32(priv->fau+qos*4, -1);
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
} else {
/* Put this packet on the queue to be freed later */
_IF_ENQUEUE(&priv->tx_free_queue[qos], m);
/* Pass it to any BPF listeners. */
ETHER_BPF_MTAP(ifp, m);
if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
if_inc_counter(ifp, IFCOUNTER_OBYTES, m->m_pkthdr.len);
}
/* Free mbufs not in use by the hardware */
if (_IF_QLEN(&priv->tx_free_queue[qos]) > in_use) {
while (_IF_QLEN(&priv->tx_free_queue[qos]) > in_use) {
_IF_DEQUEUE(&priv->tx_free_queue[qos], m);
m_freem(m);
}
}
IF_UNLOCK(&priv->tx_free_queue[qos]);
return dropped;
}
