Author: jfv
Date: Wed Apr 14 18:29:01 2010
New Revision: 206614
URL: http://svn.freebsd.org/changeset/base/206614
Log:
Remove multiqueue stack related stuff form lem, it is
unneeded for legacy hardware.
Also remove some TSO related cruft.
Add some watchdog_time setting that was missing, thanks
to Mikolaj Golub for pointing that out.
Modified:
head/sys/dev/e1000/if_lem.c
Modified: head/sys/dev/e1000/if_lem.c
==============================================================================
--- head/sys/dev/e1000/if_lem.c Wed Apr 14 17:52:00 2010 (r206613)
+++ head/sys/dev/e1000/if_lem.c Wed Apr 14 18:29:01 2010 (r206614)
@@ -39,9 +39,6 @@
#include <sys/param.h>
#include <sys/systm.h>
-#if __FreeBSD_version >= 800000
-#include <sys/buf_ring.h>
-#endif
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/kernel.h>
@@ -94,7 +91,7 @@ int lem_display_debug_stats = 0;
/*********************************************************************
* Legacy Em Driver version:
*********************************************************************/
-char lem_driver_version[] = "1.0.0";
+char lem_driver_version[] = "1.0.1";
/*********************************************************************
@@ -177,11 +174,6 @@ static int lem_suspend(device_t);
static int lem_resume(device_t);
static void lem_start(struct ifnet *);
static void lem_start_locked(struct ifnet *ifp);
-#if __FreeBSD_version >= 800000
-static int lem_mq_start(struct ifnet *, struct mbuf *);
-static int lem_mq_start_locked(struct ifnet *, struct mbuf *);
-static void lem_qflush(struct ifnet *);
-#endif
static int lem_ioctl(struct ifnet *, u_long, caddr_t);
static void lem_init(void *);
static void lem_init_locked(struct adapter *);
@@ -304,12 +296,6 @@ MODULE_DEPEND(lem, ether, 1, 1, 1);
#define EM_TICKS_TO_USECS(ticks) ((1024 * (ticks) + 500) / 1000)
#define EM_USECS_TO_TICKS(usecs) ((1000 * (usecs) + 512) / 1024)
-#define M_TSO_LEN 66
-
-/* Allow common code without TSO */
-#ifndef CSUM_TSO
-#define CSUM_TSO 0
-#endif
static int lem_tx_int_delay_dflt = EM_TICKS_TO_USECS(EM_TIDV);
static int lem_rx_int_delay_dflt = EM_TICKS_TO_USECS(EM_RDTR);
@@ -827,118 +813,6 @@ lem_resume(device_t dev)
}
-/*********************************************************************
- * Transmit entry point
- *
- * em_start is called by the stack to initiate a transmit.
- * The driver will remain in this routine as long as there are
- * packets to transmit and transmit resources are available.
- * In case resources are not available stack is notified and
- * the packet is requeued.
- **********************************************************************/
-
-#if __FreeBSD_version >= 800000
-static int
-lem_mq_start_locked(struct ifnet *ifp, struct mbuf *m)
-{
- struct adapter *adapter = ifp->if_softc;
- struct mbuf *next;
- int error = E1000_SUCCESS;
-
- EM_TX_LOCK_ASSERT(adapter);
- /* To allow being called from a tasklet */
- if (m == NULL)
- goto process;
-
- if (((ifp->if_drv_flags & (IFF_DRV_RUNNING|IFF_DRV_OACTIVE)) !=
- IFF_DRV_RUNNING)
- || (!adapter->link_active)) {
- error = drbr_enqueue(ifp, adapter->br, m);
- return (error);
- } else if (drbr_empty(ifp, adapter->br) &&
- (adapter->num_tx_desc_avail > EM_TX_OP_THRESHOLD)) {
- if ((error = lem_xmit(adapter, &m)) != 0) {
- if (m)
- error = drbr_enqueue(ifp, adapter->br, m);
- return (error);
- } else {
- /*
- * We've bypassed the buf ring so we need to update
- * ifp directly
- */
- drbr_stats_update(ifp, m->m_pkthdr.len, m->m_flags);
- /*
- ** Send a copy of the frame to the BPF
- ** listener and set the watchdog on.
- */
- ETHER_BPF_MTAP(ifp, m);
- adapter->watchdog_check = TRUE;
- }
- } else if ((error = drbr_enqueue(ifp, adapter->br, m)) != 0)
- return (error);
-
-process:
- if (drbr_empty(ifp, adapter->br))
- return(error);
- /* Process the queue */
- while (TRUE) {
- if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
- break;
- next = drbr_dequeue(ifp, adapter->br);
- if (next == NULL)
- break;
- if ((error = lem_xmit(adapter, &next)) != 0) {
- if (next != NULL)
- error = drbr_enqueue(ifp, adapter->br, next);
- break;
- }
- drbr_stats_update(ifp, next->m_pkthdr.len, next->m_flags);
- ETHER_BPF_MTAP(ifp, next);
- /* Set the watchdog */
- adapter->watchdog_check = TRUE;
- }
-
- if (adapter->num_tx_desc_avail <= EM_TX_OP_THRESHOLD)
- ifp->if_drv_flags |= IFF_DRV_OACTIVE;
-
- return (error);
-}
-
-/*
-** Multiqueue capable stack interface, this is not
-** yet truely multiqueue, but that is coming...
-*/
-static int
-lem_mq_start(struct ifnet *ifp, struct mbuf *m)
-{
-
- struct adapter *adapter = ifp->if_softc;
- int error = 0;
-
- if (EM_TX_TRYLOCK(adapter)) {
- if (ifp->if_drv_flags & IFF_DRV_RUNNING)
- error = lem_mq_start_locked(ifp, m);
- EM_TX_UNLOCK(adapter);
- } else
- error = drbr_enqueue(ifp, adapter->br, m);
-
- return (error);
-}
-
-static void
-lem_qflush(struct ifnet *ifp)
-{
- struct mbuf *m;
- struct adapter *adapter = (struct adapter *)ifp->if_softc;
-
- EM_TX_LOCK(adapter);
- while ((m = buf_ring_dequeue_sc(adapter->br)) != NULL)
- m_freem(m);
- if_qflush(ifp);
- EM_TX_UNLOCK(adapter);
-}
-#endif /* FreeBSD_version */
-
static void
lem_start_locked(struct ifnet *ifp)
{
@@ -975,6 +849,7 @@ lem_start_locked(struct ifnet *ifp)
/* Set timeout in case hardware has problems transmitting. */
adapter->watchdog_check = TRUE;
+ adapter->watchdog_time = ticks;
}
if (adapter->num_tx_desc_avail <= EM_TX_OP_THRESHOLD)
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
@@ -1151,12 +1026,6 @@ lem_ioctl(struct ifnet *ifp, u_long comm
ifp->if_capenable ^= IFCAP_HWCSUM;
reinit = 1;
}
-#if __FreeBSD_version >= 700000
- if (mask & IFCAP_TSO4) {
- ifp->if_capenable ^= IFCAP_TSO4;
- reinit = 1;
- }
-#endif
if (mask & IFCAP_VLAN_HWTAGGING) {
ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
reinit = 1;
@@ -1279,10 +1148,6 @@ lem_init_locked(struct adapter *adapter)
if (adapter->hw.mac.type >= e1000_82543) {
if (ifp->if_capenable & IFCAP_TXCSUM)
ifp->if_hwassist |= (CSUM_TCP | CSUM_UDP);
-#if __FreeBSD_version >= 700000
- if (ifp->if_capenable & IFCAP_TSO4)
- ifp->if_hwassist |= CSUM_TSO;
-#endif
}
/* Configure for OS presence */
@@ -1394,13 +1259,8 @@ lem_poll(struct ifnet *ifp, enum poll_cm
EM_TX_LOCK(adapter);
lem_txeof(adapter);
-#if __FreeBSD_version >= 800000
- if (!drbr_empty(ifp, adapter->br))
- lem_mq_start_locked(ifp, NULL);
-#else
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
lem_start_locked(ifp);
-#endif
EM_TX_UNLOCK(adapter);
return (rx_done);
}
@@ -1494,14 +1354,8 @@ lem_handle_rxtx(void *context, int pendi
taskqueue_enqueue(adapter->tq, &adapter->rxtx_task);
EM_TX_LOCK(adapter);
lem_txeof(adapter);
-
-#if __FreeBSD_version >= 800000
- if (!drbr_empty(ifp, adapter->br))
- lem_mq_start_locked(ifp, NULL);
-#else
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
lem_start_locked(ifp);
-#endif
EM_TX_UNLOCK(adapter);
}
@@ -1852,15 +1706,17 @@ lem_xmit(struct adapter *adapter, struct
if (mtag != NULL) {
ctxd->upper.fields.special =
htole16(VLAN_TAG_VALUE(mtag));
+ ctxd->lower.data |= htole32(E1000_TXD_CMD_VLE);
+ }
#else /* FreeBSD 7 */
if (m_head->m_flags & M_VLANTAG) {
/* Set the vlan id. */
ctxd->upper.fields.special =
htole16(m_head->m_pkthdr.ether_vtag);
-#endif
/* Tell hardware to add tag */
ctxd->lower.data |= htole32(E1000_TXD_CMD_VLE);
}
+#endif
tx_buffer->m_head = m_head;
tx_buffer_mapped->map = tx_buffer->map;
@@ -2544,12 +2400,6 @@ lem_setup_interface(device_t dev, struct
ifp->if_capabilities = ifp->if_capenable = 0;
-#if __FreeBSD_version >= 800000
- /* Multiqueue tx functions */
- ifp->if_transmit = lem_mq_start;
- ifp->if_qflush = lem_qflush;
- adapter->br = buf_ring_alloc(4096, M_DEVBUF, M_WAITOK,
&adapter->tx_mtx);
-#endif
if (adapter->hw.mac.type >= e1000_82543) {
int version_cap;
#if __FreeBSD_version < 700000
@@ -4549,10 +4399,6 @@ lem_print_hw_stats(struct adapter *adapt
(long long)adapter->stats.gprc);
device_printf(dev, "Good Packets Xmtd = %lld\n",
(long long)adapter->stats.gptc);
- device_printf(dev, "TSO Contexts Xmtd = %lld\n",
- (long long)adapter->stats.tsctc);
- device_printf(dev, "TSO Contexts Failed = %lld\n",
- (long long)adapter->stats.tsctfc);
}
/**********************************************************************
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