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Updates to mxge for multiple tx/rx rings:

Browse Source 
- Update mxge to use if_transmit(), and the new buf_ring
  interfaces, so as to enable multiple transmit queues.
  Use of if_transmit() is conditional on IFNET_BUF_RING,
  and is enabled by default (as in if_em).

- Record a flow id on receive if receive hashing is active.
  I currently only record the rx ring id (0..8) rather than
  the 32-bit topelitz hash result, as doing the latter would
  require shifting the driver to use a larger rx return ring.

Sponsored by:  Myricom, Inc.
This commit is contained in:
Andrew Gallatin 2009-04-27 15:45:54 +00:00
parent f2a6a13c3b
commit c6cb3e3fe8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=191562
2 changed files with 333 additions and 41 deletions
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361
sys/dev/mxge/if_mxge.c
View File

@ -30,6 +30,8 @@ POSSIBILITY OF SUCH DAMAGE.
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#define IFNET_BUF_RING
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/linker.h>
@ -66,6 +68,9 @@ __FBSDID("$FreeBSD$");
#include <machine/bus.h>
#include <machine/in_cksum.h>
#include <machine/resource.h>
#ifdef IFNET_BUF_RING
#include <sys/buf_ring.h>
#endif
#include <sys/bus.h>
#include <sys/rman.h>
#include <sys/smp.h>
@ -1223,6 +1228,9 @@ mxge_reset(mxge_softc_t *sc, int interrupts_setup)
*/
cmd.data0 = sc->num_slices;
cmd.data1 = MXGEFW_SLICE_INTR_MODE_ONE_PER_SLICE;
#ifdef IFNET_BUF_RING
cmd.data1 |= MXGEFW_SLICE_ENABLE_MULTIPLE_TX_QUEUES;
#endif
status = mxge_send_cmd(sc, MXGEFW_CMD_ENABLE_RSS_QUEUES,
&cmd);
if (status != 0) {
@ -1282,6 +1290,9 @@ mxge_reset(mxge_softc_t *sc, int interrupts_setup)
ss->tx.req = 0;
ss->tx.done = 0;
ss->tx.pkt_done = 0;
ss->tx.queue_active = 0;
ss->tx.activate = 0;
ss->tx.deactivate = 0;
ss->tx.wake = 0;
ss->tx.defrag = 0;
ss->tx.stall = 0;
@ -1614,10 +1625,6 @@ mxge_add_sysctls(mxge_softc_t *sc)
"rx_big_cnt",
CTLFLAG_RD, &ss->rx_big.cnt,
0, "rx_small_cnt");
SYSCTL_ADD_INT(ctx, children, OID_AUTO,
"tx_req",
CTLFLAG_RD, &ss->tx.req,
0, "tx_req");
SYSCTL_ADD_INT(ctx, children, OID_AUTO,
"lro_flushed", CTLFLAG_RD, &ss->lro_flushed,
0, "number of lro merge queues flushed");
@ -1627,9 +1634,15 @@ mxge_add_sysctls(mxge_softc_t *sc)
0, "number of frames appended to lro merge"
"queues");
#ifndef IFNET_BUF_RING
/* only transmit from slice 0 for now */
if (slice > 0)
continue;
#endif
SYSCTL_ADD_INT(ctx, children, OID_AUTO,
"tx_req",
CTLFLAG_RD, &ss->tx.req,
0, "tx_req");
SYSCTL_ADD_INT(ctx, children, OID_AUTO,
"tx_done",
@ -1651,6 +1664,18 @@ mxge_add_sysctls(mxge_softc_t *sc)
"tx_defrag",
CTLFLAG_RD, &ss->tx.defrag,
0, "tx_defrag");
SYSCTL_ADD_INT(ctx, children, OID_AUTO,
"tx_queue_active",
CTLFLAG_RD, &ss->tx.queue_active,
0, "tx_queue_active");
SYSCTL_ADD_INT(ctx, children, OID_AUTO,
"tx_activate",
CTLFLAG_RD, &ss->tx.activate,
0, "tx_activate");
SYSCTL_ADD_INT(ctx, children, OID_AUTO,
"tx_deactivate",
CTLFLAG_RD, &ss->tx.deactivate,
0, "tx_deactivate");
}
}
@ -1873,12 +1898,21 @@ mxge_encap_tso(struct mxge_slice_state *ss, struct mbuf *m,
tx->info[((cnt - 1) + tx->req) & tx->mask].flag = 1;
mxge_submit_req(tx, tx->req_list, cnt);
#ifdef IFNET_BUF_RING
if ((ss->sc->num_slices > 1) && tx->queue_active == 0) {
/* tell the NIC to start polling this slice */
*tx->send_go = 1;
tx->queue_active = 1;
tx->activate++;
wmb();
}
#endif
return;
drop:
bus_dmamap_unload(tx->dmat, tx->info[tx->req & tx->mask].map);
m_freem(m);
ss->sc->ifp->if_oerrors++;
ss->oerrors++;
if (!once) {
printf("tx->max_desc exceeded via TSO!\n");
printf("mss = %d, %ld, %d!\n", mss,
@ -2075,16 +2109,131 @@ mxge_encap(struct mxge_slice_state *ss, struct mbuf *m)
#endif
tx->info[((cnt - 1) + tx->req) & tx->mask].flag = 1;
mxge_submit_req(tx, tx->req_list, cnt);
#ifdef IFNET_BUF_RING
if ((ss->sc->num_slices > 1) && tx->queue_active == 0) {
/* tell the NIC to start polling this slice */
*tx->send_go = 1;
tx->queue_active = 1;
tx->activate++;
wmb();
}
#endif
return;
drop:
m_freem(m);
ifp->if_oerrors++;
ss->oerrors++;
return;
}
#ifdef IFNET_BUF_RING
static void
mxge_qflush(struct ifnet *ifp)
{
mxge_softc_t *sc = ifp->if_softc;
mxge_tx_ring_t *tx;
struct mbuf *m;
int slice;
for (slice = 0; slice < sc->num_slices; slice++) {
tx = &sc->ss[slice].tx;
mtx_lock(&tx->mtx);
while ((m = buf_ring_dequeue_sc(tx->br)) != NULL)
m_freem(m);
mtx_unlock(&tx->mtx);
}
if_qflush(ifp);
}
static inline void
mxge_start_locked(struct mxge_slice_state *ss)
{
mxge_softc_t *sc;
struct mbuf *m;
struct ifnet *ifp;
mxge_tx_ring_t *tx;
sc = ss->sc;
ifp = sc->ifp;
tx = &ss->tx;
while ((tx->mask - (tx->req - tx->done)) > tx->max_desc) {
m = drbr_dequeue(ifp, tx->br);
if (m == NULL) {
return;
}
/* let BPF see it */
BPF_MTAP(ifp, m);
/* give it to the nic */
mxge_encap(ss, m);
}
/* ran out of transmit slots */
if (((ss->if_drv_flags & IFF_DRV_OACTIVE) == 0)
&& (!drbr_empty(ifp, tx->br))) {
ss->if_drv_flags |= IFF_DRV_OACTIVE;
tx->stall++;
}
}
static int
mxge_transmit_locked(struct mxge_slice_state *ss, struct mbuf *m)
{
mxge_softc_t *sc;
struct ifnet *ifp;
mxge_tx_ring_t *tx;
int err;
sc = ss->sc;
ifp = sc->ifp;
tx = &ss->tx;
if ((ss->if_drv_flags & (IFF_DRV_RUNNING|IFF_DRV_OACTIVE)) !=
IFF_DRV_RUNNING) {
err = drbr_enqueue(ifp, tx->br, m);
return (err);
}
if (drbr_empty(ifp, tx->br) &&
((tx->mask - (tx->req - tx->done)) > tx->max_desc)) {
/* let BPF see it */
BPF_MTAP(ifp, m);
/* give it to the nic */
mxge_encap(ss, m);
} else if ((err = drbr_enqueue(ifp, tx->br, m)) != 0) {
return (err);
}
if (!drbr_empty(ifp, tx->br))
mxge_start_locked(ss);
return (0);
}
static int
mxge_transmit(struct ifnet *ifp, struct mbuf *m)
{
mxge_softc_t *sc = ifp->if_softc;
struct mxge_slice_state *ss;
mxge_tx_ring_t *tx;
int err = 0;
int slice;
slice = m->m_pkthdr.flowid;
slice &= (sc->num_slices - 1); /* num_slices always power of 2 */
ss = &sc->ss[slice];
tx = &ss->tx;
if (mtx_trylock(&tx->mtx)) {
err = mxge_transmit_locked(ss, m);
mtx_unlock(&tx->mtx);
} else {
err = drbr_enqueue(ifp, tx->br, m);
}
return (err);
}
#else
static inline void
mxge_start_locked(struct mxge_slice_state *ss)
@ -2114,7 +2263,7 @@ mxge_start_locked(struct mxge_slice_state *ss)
tx->stall++;
}
}
#endif
static void
mxge_start(struct ifnet *ifp)
{
@ -2381,6 +2530,11 @@ mxge_rx_done_big(struct mxge_slice_state *ss, uint32_t len, uint32_t csum)
m->m_pkthdr.csum_data = 0xffff;
m->m_pkthdr.csum_flags = CSUM_PSEUDO_HDR | CSUM_DATA_VALID;
}
/* flowid only valid if RSS hashing is enabled */
if (sc->num_slices > 1) {
m->m_pkthdr.flowid = (ss - sc->ss);
m->m_flags |= M_FLOWID;
}
/* pass the frame up the stack */
(*ifp->if_input)(ifp, m);
}
@ -2441,6 +2595,11 @@ mxge_rx_done_small(struct mxge_slice_state *ss, uint32_t len, uint32_t csum)
m->m_pkthdr.csum_data = 0xffff;
m->m_pkthdr.csum_flags = CSUM_PSEUDO_HDR | CSUM_DATA_VALID;
}
/* flowid only valid if RSS hashing is enabled */
if (sc->num_slices > 1) {
m->m_pkthdr.flowid = (ss - sc->ss);
m->m_flags |= M_FLOWID;
}
/* pass the frame up the stack */
(*ifp->if_input)(ifp, m);
}
@ -2486,6 +2645,7 @@ mxge_tx_done(struct mxge_slice_state *ss, uint32_t mcp_idx)
struct mbuf *m;
bus_dmamap_t map;
int idx;
int *flags;
tx = &ss->tx;
ifp = ss->sc->ifp;
@ -2496,7 +2656,12 @@ mxge_tx_done(struct mxge_slice_state *ss, uint32_t mcp_idx)
/* mbuf and DMA map only attached to the first
segment per-mbuf */
if (m != NULL) {
ifp->if_opackets++;
#ifdef IFNET_BUF_RING
ss->obytes += m->m_pkthdr.len;
if (m->m_flags & M_MCAST)
ss->omcasts++;
#endif
ss->opackets++;
tx->info[idx].m = NULL;
map = tx->info[idx].map;
bus_dmamap_unload(tx->dmat, map);
@ -2510,15 +2675,32 @@ mxge_tx_done(struct mxge_slice_state *ss, uint32_t mcp_idx)
/* If we have space, clear IFF_OACTIVE to tell the stack that
its OK to send packets */
if (ifp->if_drv_flags & IFF_DRV_OACTIVE &&
#ifdef IFNET_BUF_RING
flags = &ss->if_drv_flags;
#else
flags = &ifp->if_drv_flags;
#endif
mtx_lock(&ss->tx.mtx);
if ((*flags) & IFF_DRV_OACTIVE &&
tx->req - tx->done < (tx->mask + 1)/4) {
mtx_lock(&ss->tx.mtx);
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
*(flags) &= ~IFF_DRV_OACTIVE;
ss->tx.wake++;
mxge_start_locked(ss);
mtx_unlock(&ss->tx.mtx);
}
#ifdef IFNET_BUF_RING
if ((ss->sc->num_slices > 1) && (tx->req == tx->done)) {
/* let the NIC stop polling this queue, since there
* are no more transmits pending */
if (tx->req == tx->done) {
*tx->send_stop = 1;
tx->queue_active = 0;
tx->deactivate++;
wmb();
}
}
#endif
mtx_unlock(&ss->tx.mtx);
}
static struct mxge_media_type mxge_xfp_media_types[] =
@ -2701,6 +2883,7 @@ mxge_intr(void *arg)
uint8_t valid;
#ifndef IFNET_BUF_RING
/* an interrupt on a non-zero slice is implicitly valid
since MSI-X irqs are not shared */
if (ss != sc->ss) {
@ -2708,6 +2891,7 @@ mxge_intr(void *arg)
*ss->irq_claim = be32toh(3);
return;
}
#endif
/* make sure the DMA has finished */
if (!stats->valid) {
@ -2731,7 +2915,8 @@ mxge_intr(void *arg)
send_done_count = be32toh(stats->send_done_count);
while ((send_done_count != tx->pkt_done) ||
(rx_done->entry[rx_done->idx].length != 0)) {
mxge_tx_done(ss, (int)send_done_count);
if (send_done_count != tx->pkt_done)
mxge_tx_done(ss, (int)send_done_count);
mxge_clean_rx_done(ss);
send_done_count = be32toh(stats->send_done_count);
}
@ -2739,7 +2924,8 @@ mxge_intr(void *arg)
wmb();
} while (*((volatile uint8_t *) &stats->valid));
if (__predict_false(stats->stats_updated)) {
/* fw link & error stats meaningful only on the first slice */
if (__predict_false((ss == sc->ss) && stats->stats_updated)) {
if (sc->link_state != stats->link_up) {
sc->link_state = stats->link_up;
if (sc->link_state) {
@ -3029,9 +3215,11 @@ mxge_alloc_slice_rings(struct mxge_slice_state *ss, int rx_ring_entries,
/* now allocate TX resouces */
#ifndef IFNET_BUF_RING
/* only use a single TX ring for now */
if (ss != ss->sc->ss)
return 0;
#endif
ss->tx.mask = tx_ring_entries - 1;
ss->tx.max_desc = MIN(MXGE_MAX_SEND_DESC, tx_ring_entries / 4);
@ -3197,13 +3385,21 @@ mxge_slice_open(struct mxge_slice_state *ss, int nbufs, int cl_size)
/* get the lanai pointers to the send and receive rings */
err = 0;
#ifndef IFNET_BUF_RING
/* We currently only send from the first slice */
if (slice == 0) {
#endif
cmd.data0 = slice;
err = mxge_send_cmd(sc, MXGEFW_CMD_GET_SEND_OFFSET, &cmd);
ss->tx.lanai =
(volatile mcp_kreq_ether_send_t *)(sc->sram + cmd.data0);
ss->tx.send_go = (volatile uint32_t *)
(sc->sram + MXGEFW_ETH_SEND_GO + 64 * slice);
ss->tx.send_stop = (volatile uint32_t *)
(sc->sram + MXGEFW_ETH_SEND_STOP + 64 * slice);
#ifndef IFNET_BUF_RING
}
#endif
cmd.data0 = slice;
err |= mxge_send_cmd(sc,
MXGEFW_CMD_GET_SMALL_RX_OFFSET, &cmd);
@ -3255,6 +3451,7 @@ mxge_open(mxge_softc_t *sc)
int err, big_bytes, nbufs, slice, cl_size, i;
bus_addr_t bus;
volatile uint8_t *itable;
struct mxge_slice_state *ss;
/* Copy the MAC address in case it was overridden */
bcopy(IF_LLADDR(sc->ifp), sc->mac_addr, ETHER_ADDR_LEN);
@ -3324,10 +3521,22 @@ mxge_open(mxge_softc_t *sc)
}
/* Now give him the pointer to the stats block */
cmd.data0 = MXGE_LOWPART_TO_U32(sc->ss->fw_stats_dma.bus_addr);
cmd.data1 = MXGE_HIGHPART_TO_U32(sc->ss->fw_stats_dma.bus_addr);
cmd.data2 = sizeof(struct mcp_irq_data);
err = mxge_send_cmd(sc, MXGEFW_CMD_SET_STATS_DMA_V2, &cmd);
for (slice = 0;
#ifdef IFNET_BUF_RING
slice < sc->num_slices;
#else
slice < 1;
#endif
slice++) {
ss = &sc->ss[slice];
cmd.data0 =
MXGE_LOWPART_TO_U32(ss->fw_stats_dma.bus_addr);
cmd.data1 =
MXGE_HIGHPART_TO_U32(ss->fw_stats_dma.bus_addr);
cmd.data2 = sizeof(struct mcp_irq_data);
cmd.data2 |= (slice << 16);
err |= mxge_send_cmd(sc, MXGEFW_CMD_SET_STATS_DMA_V2, &cmd);
}
if (err != 0) {
bus = sc->ss->fw_stats_dma.bus_addr;
@ -3363,6 +3572,13 @@ mxge_open(mxge_softc_t *sc)
device_printf(sc->dev, "Couldn't bring up link\n");
goto abort;
}
#ifdef IFNET_BUF_RING
for (slice = 0; slice < sc->num_slices; slice++) {
ss = &sc->ss[slice];
ss->if_drv_flags |= IFF_DRV_RUNNING;
ss->if_drv_flags &= ~IFF_DRV_OACTIVE;
}
#endif
sc->ifp->if_drv_flags |= IFF_DRV_RUNNING;
sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
callout_reset(&sc->co_hdl, mxge_ticks, mxge_tick, sc);
@ -3381,8 +3597,18 @@ mxge_close(mxge_softc_t *sc)
{
mxge_cmd_t cmd;
int err, old_down_cnt;
#ifdef IFNET_BUF_RING
struct mxge_slice_state *ss;
int slice;
#endif
callout_stop(&sc->co_hdl);
#ifdef IFNET_BUF_RING
for (slice = 0; slice < sc->num_slices; slice++) {
ss = &sc->ss[slice];
ss->if_drv_flags &= ~IFF_DRV_RUNNING;
}
#endif
sc->ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
old_down_cnt = sc->down_cnt;
wmb();
@ -3448,9 +3674,10 @@ mxge_read_reboot(mxge_softc_t *sc)
}
static int
mxge_watchdog_reset(mxge_softc_t *sc)
mxge_watchdog_reset(mxge_softc_t *sc, int slice)
{
struct pci_devinfo *dinfo;
mxge_tx_ring_t *tx;
int err;
uint32_t reboot;
uint16_t cmd;
@ -3497,11 +3724,17 @@ mxge_watchdog_reset(mxge_softc_t *sc)
err = mxge_open(sc);
}
} else {
device_printf(sc->dev, "NIC did not reboot, ring state:\n");
device_printf(sc->dev, "tx.req=%d tx.done=%d\n",
sc->ss->tx.req, sc->ss->tx.done);
tx = &sc->ss[slice].tx;
device_printf(sc->dev,
"NIC did not reboot, slice %d ring state:\n",
slice);
device_printf(sc->dev,
"tx.req=%d tx.done=%d, tx.queue_active=%d\n",
tx->req, tx->done, tx->queue_active);
device_printf(sc->dev, "tx.activate=%d tx.deactivate=%d\n",
tx->activate, tx->deactivate);
device_printf(sc->dev, "pkt_done=%d fw=%d\n",
sc->ss->tx.pkt_done,
tx->pkt_done,
be32toh(sc->ss->fw_stats->send_done_count));
device_printf(sc->dev, "not resetting\n");
}
@ -3511,26 +3744,35 @@ mxge_watchdog_reset(mxge_softc_t *sc)
static int
mxge_watchdog(mxge_softc_t *sc)
{
mxge_tx_ring_t *tx = &sc->ss->tx;
mxge_tx_ring_t *tx;
uint32_t rx_pause = be32toh(sc->ss->fw_stats->dropped_pause);
int err = 0;
int i, err = 0;
/* see if we have outstanding transmits, which
have been pending for more than mxge_ticks */
if (tx->req != tx->done &&
tx->watchdog_req != tx->watchdog_done &&
tx->done == tx->watchdog_done) {
/* check for pause blocking before resetting */
if (tx->watchdog_rx_pause == rx_pause)
err = mxge_watchdog_reset(sc);
else
device_printf(sc->dev, "Flow control blocking "
"xmits, check link partner\n");
}
for (i = 0;
#ifdef IFNET_BUF_RING
(i < sc->num_slices) && (err == 0);
#else
(i < 1) && (err == 0);
#endif
i++) {
tx = &sc->ss[i].tx;
if (tx->req != tx->done &&
tx->watchdog_req != tx->watchdog_done &&
tx->done == tx->watchdog_done) {
/* check for pause blocking before resetting */
if (tx->watchdog_rx_pause == rx_pause)
err = mxge_watchdog_reset(sc, i);
else
device_printf(sc->dev, "Flow control blocking "
"xmits, check link partner\n");
}
tx->watchdog_req = tx->req;
tx->watchdog_done = tx->done;
tx->watchdog_rx_pause = rx_pause;
tx->watchdog_req = tx->req;
tx->watchdog_done = tx->done;
tx->watchdog_rx_pause = rx_pause;
}
if (sc->need_media_probe)
mxge_media_probe(sc);
@ -3542,15 +3784,36 @@ mxge_update_stats(mxge_softc_t *sc)
{
struct mxge_slice_state *ss;
u_long ipackets = 0;
u_long opackets = 0;
#ifdef IFNET_BUF_RING
u_long obytes = 0;
u_long omcasts = 0;
u_long odrops = 0;
#endif
u_long oerrors = 0;
int slice;
for(slice = 0; slice < sc->num_slices; slice++) {
for (slice = 0; slice < sc->num_slices; slice++) {
ss = &sc->ss[slice];
ipackets += ss->ipackets;
opackets += ss->opackets;
#ifdef IFNET_BUF_RING
obytes += ss->obytes;
omcasts += ss->omcasts;
odrops += ss->tx.br->br_drops;
#endif
oerrors += ss->oerrors;
}
sc->ifp->if_ipackets = ipackets;
sc->ifp->if_opackets = opackets;
#ifdef IFNET_BUF_RING
sc->ifp->if_obytes = obytes;
sc->ifp->if_omcasts = omcasts;
sc->ifp->if_snd.ifq_drops = odrops;
#endif
sc->ifp->if_oerrors = oerrors;
}
static void
mxge_tick(void *arg)
{
@ -3772,6 +4035,12 @@ mxge_free_slices(mxge_softc_t *sc)
if (ss->fw_stats != NULL) {
mxge_dma_free(&ss->fw_stats_dma);
ss->fw_stats = NULL;
#ifdef IFNET_BUF_RING
if (ss->tx.br != NULL) {
drbr_free(ss->tx.br, M_DEVBUF);
ss->tx.br = NULL;
}
#endif
mtx_destroy(&ss->tx.mtx);
}
if (ss->rx_done.entry != NULL) {
@ -3822,8 +4091,10 @@ mxge_alloc_slices(mxge_softc_t *sc)
* (including tx) are used used only on the first
* slice for now
*/
#ifndef IFNET_BUF_RING
if (i > 0)
continue;
#endif
bytes = sizeof (*ss->fw_stats);
err = mxge_dma_alloc(sc, &ss->fw_stats_dma,
@ -3834,6 +4105,10 @@ mxge_alloc_slices(mxge_softc_t *sc)
snprintf(ss->tx.mtx_name, sizeof(ss->tx.mtx_name),
"%s:tx(%d)", device_get_nameunit(sc->dev), i);
mtx_init(&ss->tx.mtx, ss->tx.mtx_name, NULL, MTX_DEF);
#ifdef IFNET_BUF_RING
ss->tx.br = buf_ring_alloc(2048, M_DEVBUF, M_WAITOK,
&ss->tx.mtx);
#endif
}
return (0);
@ -4307,6 +4582,10 @@ mxge_attach(device_t dev)
ifp->if_mtu = 9000;
mxge_add_sysctls(sc);
#ifdef IFNET_BUF_RING
ifp->if_transmit = mxge_transmit;
ifp->if_qflush = mxge_qflush;
#endif
return 0;
abort_with_rings:

13
sys/dev/mxge/if_mxge_var.h
View File

@ -125,7 +125,12 @@ typedef struct
typedef struct
{
struct mtx mtx;
#ifdef IFNET_MULTIQUEUE
struct buf_ring *br;
#endif
volatile mcp_kreq_ether_send_t *lanai; /* lanai ptr for sendq */
volatile uint32_t *send_go; /* doorbell for sendq */
volatile uint32_t *send_stop; /* doorbell for sendq */
mcp_kreq_ether_send_t *req_list; /* host shadow of sendq */
char *req_bytes;
bus_dma_segment_t *seg_list;
@ -136,6 +141,9 @@ typedef struct
int done; /* transmits completed */
int pkt_done; /* packets completed */
int max_desc; /* max descriptors per xmit */
int queue_active; /* fw currently polling this queue*/
int activate;
int deactivate;
int stall; /* #times hw queue exhausted */
int wake; /* #times irq re-enabled xmit */
int watchdog_req; /* cache of req */
@ -182,6 +190,11 @@ struct mxge_slice_state {
mcp_irq_data_t *fw_stats;
volatile uint32_t *irq_claim;
u_long ipackets;
u_long opackets;
u_long obytes;
u_long omcasts;
u_long oerrors;
int if_drv_flags;
struct lro_head lro_active;
struct lro_head lro_free;
int lro_queued;