Author: sephe
Date: Mon Jun 13 07:30:54 2016
New Revision: 301861
URL: https://svnweb.freebsd.org/changeset/base/301861
Log:
MFC 295743,295744,295745,295746,295747
295743
hyperv/hn: Change global tunable prefix to hw.hn
And use SYSCTL+CTLFLAG_RDTUN for them.
Suggested by: adrian
Reviewed by: adrian, Hongjiang Zhang <honzhan microsoft com>
Approved by: adrian (mentor)
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D5274
295744
hyperv/hn: Split RX ring data structure out of softc
This paves the way for upcoming vRSS stuffs and eases more code cleanup.
Reviewed by: adrian
Approved by: adrian (mentor)
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D5275
295745
hyperv/hn: Use taskqueue_enqueue()
This also eases experiment on the non-fast taskqueue.
Reviewed by: adrian, Jun Su <junsu microsoft com>
Approved by: adrian (mentor)
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D5276
295746
hyperv/hn: Use non-fast taskqueue for transmission
Performance stays same; so no need to use fast taskqueue here.
295747
hyperv/hn: Split TX ring data structure out of softc
This paves the way for upcoming vRSS stuffs and eases more code cleanup.
Reviewed by: adrian
Approved by: adrian (mentor)
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D5283
Modified:
stable/10/sys/dev/hyperv/netvsc/hv_net_vsc.h
stable/10/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/dev/hyperv/netvsc/hv_net_vsc.h
==============================================================================
--- stable/10/sys/dev/hyperv/netvsc/hv_net_vsc.h Mon Jun 13 07:03:00
2016 (r301860)
+++ stable/10/sys/dev/hyperv/netvsc/hv_net_vsc.h Mon Jun 13 07:30:54
2016 (r301861)
@@ -993,31 +993,25 @@ typedef struct {
struct hn_txdesc;
SLIST_HEAD(hn_txdesc_list, hn_txdesc);
-/*
- * Device-specific softc structure
- */
-typedef struct hn_softc {
- struct ifnet *hn_ifp;
- struct arpcom arpcom;
- struct ifmedia hn_media;
- device_t hn_dev;
- uint8_t hn_unit;
- int hn_carrier;
- int hn_if_flags;
- struct mtx hn_lock;
- int hn_initdone;
- /* See hv_netvsc_drv_freebsd.c for rules on how to use */
- int temp_unusable;
- struct hv_device *hn_dev_obj;
- netvsc_dev *net_dev;
+struct hn_rx_ring {
+ struct lro_ctrl hn_lro;
- struct hn_txdesc *hn_txdesc;
- bus_dma_tag_t hn_tx_data_dtag;
- bus_dma_tag_t hn_tx_rndis_dtag;
- int hn_tx_chimney_size;
- int hn_tx_chimney_max;
- uint64_t hn_csum_assist;
+ /* Trust csum verification on host side */
+ int hn_trust_hcsum; /* HN_TRUST_HCSUM_ */
+
+ u_long hn_csum_ip;
+ u_long hn_csum_tcp;
+ u_long hn_csum_udp;
+ u_long hn_csum_trusted;
+ u_long hn_lro_tried;
+ u_long hn_small_pkts;
+} __aligned(CACHE_LINE_SIZE);
+
+#define HN_TRUST_HCSUM_IP 0x0001
+#define HN_TRUST_HCSUM_TCP 0x0002
+#define HN_TRUST_HCSUM_UDP 0x0004
+struct hn_tx_ring {
struct mtx hn_txlist_spin;
struct hn_txdesc_list hn_txlist;
int hn_txdesc_cnt;
@@ -1025,32 +1019,57 @@ typedef struct hn_softc {
int hn_txeof;
int hn_sched_tx;
- int hn_direct_tx_size;
struct taskqueue *hn_tx_taskq;
struct task hn_start_task;
struct task hn_txeof_task;
- struct lro_ctrl hn_lro;
+ struct mtx hn_tx_lock;
+ struct hn_softc *hn_sc;
- /* Trust csum verification on host side */
- int hn_trust_hcsum; /* HN_TRUST_HCSUM_ */
+ int hn_direct_tx_size;
+ int hn_tx_chimney_size;
+ bus_dma_tag_t hn_tx_data_dtag;
+ uint64_t hn_csum_assist;
- u_long hn_csum_ip;
- u_long hn_csum_tcp;
- u_long hn_csum_udp;
- u_long hn_csum_trusted;
- u_long hn_lro_tried;
- u_long hn_small_pkts;
u_long hn_no_txdescs;
u_long hn_send_failed;
u_long hn_txdma_failed;
u_long hn_tx_collapsed;
u_long hn_tx_chimney;
-} hn_softc_t;
-#define HN_TRUST_HCSUM_IP 0x0001
-#define HN_TRUST_HCSUM_TCP 0x0002
-#define HN_TRUST_HCSUM_UDP 0x0004
+ /* Rarely used stuffs */
+ struct hn_txdesc *hn_txdesc;
+ bus_dma_tag_t hn_tx_rndis_dtag;
+ struct sysctl_oid *hn_tx_sysctl_tree;
+} __aligned(CACHE_LINE_SIZE);
+
+/*
+ * Device-specific softc structure
+ */
+typedef struct hn_softc {
+ struct ifnet *hn_ifp;
+ struct arpcom arpcom;
+ struct ifmedia hn_media;
+ device_t hn_dev;
+ uint8_t hn_unit;
+ int hn_carrier;
+ int hn_if_flags;
+ struct mtx hn_lock;
+ int hn_initdone;
+ /* See hv_netvsc_drv_freebsd.c for rules on how to use */
+ int temp_unusable;
+ struct hv_device *hn_dev_obj;
+ netvsc_dev *net_dev;
+
+ int hn_rx_ring_cnt;
+ struct hn_rx_ring *hn_rx_ring;
+
+ int hn_tx_ring_cnt;
+ struct hn_tx_ring *hn_tx_ring;
+ int hn_tx_chimney_max;
+ struct taskqueue *hn_tx_taskq;
+ struct sysctl_oid *hn_tx_sysctl_tree;
+} hn_softc_t;
/*
* Externs
Modified: stable/10/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
==============================================================================
--- stable/10/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Mon Jun 13
07:03:00 2016 (r301860)
+++ stable/10/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Mon Jun 13
07:30:54 2016 (r301861)
@@ -153,7 +153,7 @@ __FBSDID("$FreeBSD$");
struct hn_txdesc {
SLIST_ENTRY(hn_txdesc) link;
struct mbuf *m;
- struct hn_softc *sc;
+ struct hn_tx_ring *txr;
int refs;
uint32_t flags; /* HN_TXD_FLAG_ */
netvsc_packet netvsc_pkt; /* XXX to be removed */
@@ -193,7 +193,6 @@ struct hn_txdesc {
#define NV_LOCK_INIT(_sc, _name) \
mtx_init(&(_sc)->hn_lock, _name, MTX_NETWORK_LOCK, MTX_DEF)
#define NV_LOCK(_sc) mtx_lock(&(_sc)->hn_lock)
-#define NV_TRYLOCK(_sc) mtx_trylock(&(_sc)->hn_lock)
#define NV_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->hn_lock, MA_OWNED)
#define NV_UNLOCK(_sc) mtx_unlock(&(_sc)->hn_lock)
#define NV_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->hn_lock)
@@ -205,41 +204,57 @@ struct hn_txdesc {
int hv_promisc_mode = 0; /* normal mode by default */
+SYSCTL_NODE(_hw, OID_AUTO, hn, CTLFLAG_RD, NULL, "Hyper-V network interface");
+
/* Trust tcp segements verification on host side. */
static int hn_trust_hosttcp = 1;
-TUNABLE_INT("dev.hn.trust_hosttcp", &hn_trust_hosttcp);
+SYSCTL_INT(_hw_hn, OID_AUTO, trust_hosttcp, CTLFLAG_RDTUN,
+ &hn_trust_hosttcp, 0,
+ "Trust tcp segement verification on host side, "
+ "when csum info is missing (global setting)");
/* Trust udp datagrams verification on host side. */
static int hn_trust_hostudp = 1;
-TUNABLE_INT("dev.hn.trust_hostudp", &hn_trust_hostudp);
+SYSCTL_INT(_hw_hn, OID_AUTO, trust_hostudp, CTLFLAG_RDTUN,
+ &hn_trust_hostudp, 0,
+ "Trust udp datagram verification on host side, "
+ "when csum info is missing (global setting)");
/* Trust ip packets verification on host side. */
static int hn_trust_hostip = 1;
-TUNABLE_INT("dev.hn.trust_hostip", &hn_trust_hostip);
+SYSCTL_INT(_hw_hn, OID_AUTO, trust_hostip, CTLFLAG_RDTUN,
+ &hn_trust_hostip, 0,
+ "Trust ip packet verification on host side, "
+ "when csum info is missing (global setting)");
#if __FreeBSD_version >= 1100045
/* Limit TSO burst size */
static int hn_tso_maxlen = 0;
-TUNABLE_INT("dev.hn.tso_maxlen", &hn_tso_maxlen);
+SYSCTL_INT(_hw_hn, OID_AUTO, tso_maxlen, CTLFLAG_RDTUN,
+ &hn_tso_maxlen, 0, "TSO burst limit");
#endif
/* Limit chimney send size */
static int hn_tx_chimney_size = 0;
-TUNABLE_INT("dev.hn.tx_chimney_size", &hn_tx_chimney_size);
+SYSCTL_INT(_hw_hn, OID_AUTO, tx_chimney_size, CTLFLAG_RDTUN,
+ &hn_tx_chimney_size, 0, "Chimney send packet size limit");
/* Limit the size of packet for direct transmission */
static int hn_direct_tx_size = HN_DIRECT_TX_SIZE_DEF;
-TUNABLE_INT("dev.hn.direct_tx_size", &hn_direct_tx_size);
+SYSCTL_INT(_hw_hn, OID_AUTO, direct_tx_size, CTLFLAG_RDTUN,
+ &hn_direct_tx_size, 0, "Size of the packet for direct transmission");
#if defined(INET) || defined(INET6)
#if __FreeBSD_version >= 1100095
static int hn_lro_entry_count = HN_LROENT_CNT_DEF;
-TUNABLE_INT("dev.hn.lro_entry_count", &hn_lro_entry_count);
+SYSCTL_INT(_hw_hn, OID_AUTO, lro_entry_count, CTLFLAG_RDTUN,
+ &hn_lro_entry_count, 0, "LRO entry count");
#endif
#endif
static int hn_share_tx_taskq = 0;
-TUNABLE_INT("hw.hn.share_tx_taskq", &hn_share_tx_taskq);
+SYSCTL_INT(_hw_hn, OID_AUTO, share_tx_taskq, CTLFLAG_RDTUN,
+ &hn_share_tx_taskq, 0, "Enable shared TX taskqueue");
static struct taskqueue *hn_tx_taskq;
@@ -250,9 +265,9 @@ static void hn_stop(hn_softc_t *sc);
static void hn_ifinit_locked(hn_softc_t *sc);
static void hn_ifinit(void *xsc);
static int hn_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
-static int hn_start_locked(struct ifnet *ifp, int len);
+static int hn_start_locked(struct hn_tx_ring *txr, int len);
static void hn_start(struct ifnet *ifp);
-static void hn_start_txeof(struct ifnet *ifp);
+static void hn_start_txeof(struct hn_tx_ring *);
static int hn_ifmedia_upd(struct ifnet *ifp);
static void hn_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr);
#if __FreeBSD_version >= 1100099
@@ -261,12 +276,22 @@ static int hn_lro_ackcnt_sysctl(SYSCTL_H
#endif
static int hn_trust_hcsum_sysctl(SYSCTL_HANDLER_ARGS);
static int hn_tx_chimney_size_sysctl(SYSCTL_HANDLER_ARGS);
+static int hn_rx_stat_ulong_sysctl(SYSCTL_HANDLER_ARGS);
+static int hn_rx_stat_u64_sysctl(SYSCTL_HANDLER_ARGS);
+static int hn_tx_stat_ulong_sysctl(SYSCTL_HANDLER_ARGS);
+static int hn_tx_conf_int_sysctl(SYSCTL_HANDLER_ARGS);
static int hn_check_iplen(const struct mbuf *, int);
-static int hn_create_tx_ring(struct hn_softc *sc);
-static void hn_destroy_tx_ring(struct hn_softc *sc);
+static int hn_create_tx_ring(struct hn_softc *, int);
+static void hn_destroy_tx_ring(struct hn_tx_ring *);
+static int hn_create_tx_data(struct hn_softc *);
+static void hn_destroy_tx_data(struct hn_softc *);
static void hn_start_taskfunc(void *xsc, int pending);
static void hn_txeof_taskfunc(void *xsc, int pending);
-static int hn_encap(struct hn_softc *, struct hn_txdesc *, struct mbuf **);
+static void hn_stop_tx_tasks(struct hn_softc *);
+static int hn_encap(struct hn_tx_ring *, struct hn_txdesc *, struct mbuf **);
+static void hn_create_rx_data(struct hn_softc *sc);
+static void hn_destroy_rx_data(struct hn_softc *sc);
+static void hn_set_tx_chimney_size(struct hn_softc *, int);
static int
hn_ifmedia_upd(struct ifnet *ifp __unused)
@@ -332,17 +357,10 @@ netvsc_attach(device_t dev)
hn_softc_t *sc;
int unit = device_get_unit(dev);
struct ifnet *ifp = NULL;
- struct sysctl_oid_list *child;
- struct sysctl_ctx_list *ctx;
int error;
#if __FreeBSD_version >= 1100045
int tso_maxlen;
#endif
-#if defined(INET) || defined(INET6)
-#if __FreeBSD_version >= 1100095
- int lroent_cnt;
-#endif
-#endif
sc = device_get_softc(dev);
if (sc == NULL) {
@@ -352,29 +370,15 @@ netvsc_attach(device_t dev)
bzero(sc, sizeof(hn_softc_t));
sc->hn_unit = unit;
sc->hn_dev = dev;
- sc->hn_direct_tx_size = hn_direct_tx_size;
- if (hn_trust_hosttcp)
- sc->hn_trust_hcsum |= HN_TRUST_HCSUM_TCP;
- if (hn_trust_hostudp)
- sc->hn_trust_hcsum |= HN_TRUST_HCSUM_UDP;
- if (hn_trust_hostip)
- sc->hn_trust_hcsum |= HN_TRUST_HCSUM_IP;
if (hn_tx_taskq == NULL) {
- sc->hn_tx_taskq = taskqueue_create_fast("hn_tx", M_WAITOK,
+ sc->hn_tx_taskq = taskqueue_create("hn_tx", M_WAITOK,
taskqueue_thread_enqueue, &sc->hn_tx_taskq);
taskqueue_start_threads(&sc->hn_tx_taskq, 1, PI_NET, "%s tx",
device_get_nameunit(dev));
} else {
sc->hn_tx_taskq = hn_tx_taskq;
}
- TASK_INIT(&sc->hn_start_task, 0, hn_start_taskfunc, sc);
- TASK_INIT(&sc->hn_txeof_task, 0, hn_txeof_taskfunc, sc);
-
- error = hn_create_tx_ring(sc);
- if (error)
- goto failed;
-
NV_LOCK_INIT(sc, "NetVSCLock");
sc->hn_dev_obj = device_ctx;
@@ -382,6 +386,12 @@ netvsc_attach(device_t dev)
ifp = sc->hn_ifp = sc->arpcom.ac_ifp = if_alloc(IFT_ETHER);
ifp->if_softc = sc;
+ error = hn_create_tx_data(sc);
+ if (error)
+ goto failed;
+
+ hn_create_rx_data(sc);
+
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
ifp->if_dunit = unit;
ifp->if_dname = NETVSC_DEVNAME;
@@ -412,12 +422,7 @@ netvsc_attach(device_t dev)
ifp->if_capenable |=
IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU | IFCAP_HWCSUM | IFCAP_TSO |
IFCAP_LRO;
-
- if (hv_vmbus_protocal_version >= HV_VMBUS_VERSION_WIN8_1)
- sc->hn_csum_assist = HN_CSUM_ASSIST;
- else
- sc->hn_csum_assist = HN_CSUM_ASSIST_WIN8;
- ifp->if_hwassist = sc->hn_csum_assist | CSUM_TSO;
+ ifp->if_hwassist = sc->hn_tx_ring[0].hn_csum_assist | CSUM_TSO;
error = hv_rf_on_device_add(device_ctx, &device_info);
if (error)
@@ -427,24 +432,6 @@ netvsc_attach(device_t dev)
sc->hn_carrier = 1;
}
-#if defined(INET) || defined(INET6)
-#if __FreeBSD_version >= 1100095
- lroent_cnt = hn_lro_entry_count;
- if (lroent_cnt < TCP_LRO_ENTRIES)
- lroent_cnt = TCP_LRO_ENTRIES;
- tcp_lro_init_args(&sc->hn_lro, ifp, lroent_cnt, 0);
- device_printf(dev, "LRO: entry count %d\n", lroent_cnt);
-#else
- tcp_lro_init(&sc->hn_lro);
- /* Driver private LRO settings */
- sc->hn_lro.ifp = ifp;
-#endif
-#if __FreeBSD_version >= 1100099
- sc->hn_lro.lro_length_lim = HN_LRO_LENLIM_DEF;
- sc->hn_lro.lro_ackcnt_lim = HN_LRO_ACKCNT_DEF;
-#endif
-#endif /* INET || INET6 */
-
#if __FreeBSD_version >= 1100045
tso_maxlen = hn_tso_maxlen;
if (tso_maxlen <= 0 || tso_maxlen > IP_MAXPACKET)
@@ -464,134 +451,14 @@ netvsc_attach(device_t dev)
#endif
sc->hn_tx_chimney_max = sc->net_dev->send_section_size;
- sc->hn_tx_chimney_size = sc->hn_tx_chimney_max;
+ hn_set_tx_chimney_size(sc, sc->hn_tx_chimney_max);
if (hn_tx_chimney_size > 0 &&
hn_tx_chimney_size < sc->hn_tx_chimney_max)
- sc->hn_tx_chimney_size = hn_tx_chimney_size;
-
- /*
- * Always schedule transmission instead of trying
- * to do direct transmission. This one gives the
- * best performance so far.
- */
- sc->hn_sched_tx = 1;
-
- ctx = device_get_sysctl_ctx(dev);
- child = SYSCTL_CHILDREN(device_get_sysctl_tree(dev));
-
- SYSCTL_ADD_INT(ctx, child, OID_AUTO, "lro_queued",
- CTLFLAG_RW, &sc->hn_lro.lro_queued, 0, "LRO queued");
- SYSCTL_ADD_INT(ctx, child, OID_AUTO, "lro_flushed",
- CTLFLAG_RW, &sc->hn_lro.lro_flushed, 0, "LRO flushed");
- SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "lro_tried",
- CTLFLAG_RW, &sc->hn_lro_tried, "# of LRO tries");
-#if __FreeBSD_version >= 1100099
- SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "lro_length_lim",
- CTLTYPE_UINT | CTLFLAG_RW, sc, 0, hn_lro_lenlim_sysctl, "IU",
- "Max # of data bytes to be aggregated by LRO");
- SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "lro_ackcnt_lim",
- CTLTYPE_INT | CTLFLAG_RW, sc, 0, hn_lro_ackcnt_sysctl, "I",
- "Max # of ACKs to be aggregated by LRO");
-#endif
- SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "trust_hosttcp",
- CTLTYPE_INT | CTLFLAG_RW, sc, HN_TRUST_HCSUM_TCP,
- hn_trust_hcsum_sysctl, "I",
- "Trust tcp segement verification on host side, "
- "when csum info is missing");
- SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "trust_hostudp",
- CTLTYPE_INT | CTLFLAG_RW, sc, HN_TRUST_HCSUM_UDP,
- hn_trust_hcsum_sysctl, "I",
- "Trust udp datagram verification on host side, "
- "when csum info is missing");
- SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "trust_hostip",
- CTLTYPE_INT | CTLFLAG_RW, sc, HN_TRUST_HCSUM_IP,
- hn_trust_hcsum_sysctl, "I",
- "Trust ip packet verification on host side, "
- "when csum info is missing");
- SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "csum_ip",
- CTLFLAG_RW, &sc->hn_csum_ip, "RXCSUM IP");
- SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "csum_tcp",
- CTLFLAG_RW, &sc->hn_csum_tcp, "RXCSUM TCP");
- SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "csum_udp",
- CTLFLAG_RW, &sc->hn_csum_udp, "RXCSUM UDP");
- SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "csum_trusted",
- CTLFLAG_RW, &sc->hn_csum_trusted,
- "# of packets that we trust host's csum verification");
- SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "small_pkts",
- CTLFLAG_RW, &sc->hn_small_pkts, "# of small packets received");
- SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "no_txdescs",
- CTLFLAG_RW, &sc->hn_no_txdescs, "# of times short of TX descs");
- SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "send_failed",
- CTLFLAG_RW, &sc->hn_send_failed, "# of hyper-v sending failure");
- SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "txdma_failed",
- CTLFLAG_RW, &sc->hn_txdma_failed, "# of TX DMA failure");
- SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "tx_collapsed",
- CTLFLAG_RW, &sc->hn_tx_collapsed, "# of TX mbuf collapsed");
- SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "tx_chimney",
- CTLFLAG_RW, &sc->hn_tx_chimney, "# of chimney send");
- SYSCTL_ADD_INT(ctx, child, OID_AUTO, "txdesc_cnt",
- CTLFLAG_RD, &sc->hn_txdesc_cnt, 0, "# of total TX descs");
- SYSCTL_ADD_INT(ctx, child, OID_AUTO, "txdesc_avail",
- CTLFLAG_RD, &sc->hn_txdesc_avail, 0, "# of available TX descs");
- SYSCTL_ADD_INT(ctx, child, OID_AUTO, "tx_chimney_max",
- CTLFLAG_RD, &sc->hn_tx_chimney_max, 0,
- "Chimney send packet size upper boundary");
- SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "tx_chimney_size",
- CTLTYPE_INT | CTLFLAG_RW, sc, 0, hn_tx_chimney_size_sysctl,
- "I", "Chimney send packet size limit");
- SYSCTL_ADD_INT(ctx, child, OID_AUTO, "direct_tx_size",
- CTLFLAG_RW, &sc->hn_direct_tx_size, 0,
- "Size of the packet for direct transmission");
- SYSCTL_ADD_INT(ctx, child, OID_AUTO, "sched_tx",
- CTLFLAG_RW, &sc->hn_sched_tx, 0,
- "Always schedule transmission "
- "instead of doing direct transmission");
-
- if (unit == 0) {
- struct sysctl_ctx_list *dc_ctx;
- struct sysctl_oid_list *dc_child;
- devclass_t dc;
-
- /*
- * Add sysctl nodes for devclass
- */
- dc = device_get_devclass(dev);
- dc_ctx = devclass_get_sysctl_ctx(dc);
- dc_child = SYSCTL_CHILDREN(devclass_get_sysctl_tree(dc));
-
- SYSCTL_ADD_INT(dc_ctx, dc_child, OID_AUTO, "trust_hosttcp",
- CTLFLAG_RD, &hn_trust_hosttcp, 0,
- "Trust tcp segement verification on host side, "
- "when csum info is missing (global setting)");
- SYSCTL_ADD_INT(dc_ctx, dc_child, OID_AUTO, "trust_hostudp",
- CTLFLAG_RD, &hn_trust_hostudp, 0,
- "Trust udp datagram verification on host side, "
- "when csum info is missing (global setting)");
- SYSCTL_ADD_INT(dc_ctx, dc_child, OID_AUTO, "trust_hostip",
- CTLFLAG_RD, &hn_trust_hostip, 0,
- "Trust ip packet verification on host side, "
- "when csum info is missing (global setting)");
- SYSCTL_ADD_INT(dc_ctx, dc_child, OID_AUTO, "tx_chimney_size",
- CTLFLAG_RD, &hn_tx_chimney_size, 0,
- "Chimney send packet size limit");
-#if __FreeBSD_version >= 1100045
- SYSCTL_ADD_INT(dc_ctx, dc_child, OID_AUTO, "tso_maxlen",
- CTLFLAG_RD, &hn_tso_maxlen, 0, "TSO burst limit");
-#endif
- SYSCTL_ADD_INT(dc_ctx, dc_child, OID_AUTO, "direct_tx_size",
- CTLFLAG_RD, &hn_direct_tx_size, 0,
- "Size of the packet for direct transmission");
-#if defined(INET) || defined(INET6)
-#if __FreeBSD_version >= 1100095
- SYSCTL_ADD_INT(dc_ctx, dc_child, OID_AUTO, "lro_entry_count",
- CTLFLAG_RD, &hn_lro_entry_count, 0, "LRO entry count");
-#endif
-#endif
- }
+ hn_set_tx_chimney_size(sc, hn_tx_chimney_size);
return (0);
failed:
- hn_destroy_tx_ring(sc);
+ hn_destroy_tx_data(sc);
if (ifp != NULL)
if_free(ifp);
return (error);
@@ -622,16 +489,14 @@ netvsc_detach(device_t dev)
hv_rf_on_device_remove(hv_device, HV_RF_NV_DESTROY_CHANNEL);
- taskqueue_drain(sc->hn_tx_taskq, &sc->hn_start_task);
- taskqueue_drain(sc->hn_tx_taskq, &sc->hn_txeof_task);
- if (sc->hn_tx_taskq != hn_tx_taskq)
- taskqueue_free(sc->hn_tx_taskq);
+ hn_stop_tx_tasks(sc);
ifmedia_removeall(&sc->hn_media);
-#if defined(INET) || defined(INET6)
- tcp_lro_free(&sc->hn_lro);
-#endif
- hn_destroy_tx_ring(sc);
+ hn_destroy_rx_data(sc);
+ hn_destroy_tx_data(sc);
+
+ if (sc->hn_tx_taskq != hn_tx_taskq)
+ taskqueue_free(sc->hn_tx_taskq);
return (0);
}
@@ -646,13 +511,13 @@ netvsc_shutdown(device_t dev)
}
static __inline int
-hn_txdesc_dmamap_load(struct hn_softc *sc, struct hn_txdesc *txd,
+hn_txdesc_dmamap_load(struct hn_tx_ring *txr, struct hn_txdesc *txd,
struct mbuf **m_head, bus_dma_segment_t *segs, int *nsegs)
{
struct mbuf *m = *m_head;
int error;
- error = bus_dmamap_load_mbuf_sg(sc->hn_tx_data_dtag, txd->data_dmap,
+ error = bus_dmamap_load_mbuf_sg(txr->hn_tx_data_dtag, txd->data_dmap,
m, segs, nsegs, BUS_DMA_NOWAIT);
if (error == EFBIG) {
struct mbuf *m_new;
@@ -662,13 +527,13 @@ hn_txdesc_dmamap_load(struct hn_softc *s
return ENOBUFS;
else
*m_head = m = m_new;
- sc->hn_tx_collapsed++;
+ txr->hn_tx_collapsed++;
- error = bus_dmamap_load_mbuf_sg(sc->hn_tx_data_dtag,
+ error = bus_dmamap_load_mbuf_sg(txr->hn_tx_data_dtag,
txd->data_dmap, m, segs, nsegs, BUS_DMA_NOWAIT);
}
if (!error) {
- bus_dmamap_sync(sc->hn_tx_data_dtag, txd->data_dmap,
+ bus_dmamap_sync(txr->hn_tx_data_dtag, txd->data_dmap,
BUS_DMASYNC_PREWRITE);
txd->flags |= HN_TXD_FLAG_DMAMAP;
}
@@ -676,20 +541,20 @@ hn_txdesc_dmamap_load(struct hn_softc *s
}
static __inline void
-hn_txdesc_dmamap_unload(struct hn_softc *sc, struct hn_txdesc *txd)
+hn_txdesc_dmamap_unload(struct hn_tx_ring *txr, struct hn_txdesc *txd)
{
if (txd->flags & HN_TXD_FLAG_DMAMAP) {
- bus_dmamap_sync(sc->hn_tx_data_dtag,
+ bus_dmamap_sync(txr->hn_tx_data_dtag,
txd->data_dmap, BUS_DMASYNC_POSTWRITE);
- bus_dmamap_unload(sc->hn_tx_data_dtag,
+ bus_dmamap_unload(txr->hn_tx_data_dtag,
txd->data_dmap);
txd->flags &= ~HN_TXD_FLAG_DMAMAP;
}
}
static __inline int
-hn_txdesc_put(struct hn_softc *sc, struct hn_txdesc *txd)
+hn_txdesc_put(struct hn_tx_ring *txr, struct hn_txdesc *txd)
{
KASSERT((txd->flags & HN_TXD_FLAG_ONLIST) == 0,
@@ -699,7 +564,7 @@ hn_txdesc_put(struct hn_softc *sc, struc
if (atomic_fetchadd_int(&txd->refs, -1) != 1)
return 0;
- hn_txdesc_dmamap_unload(sc, txd);
+ hn_txdesc_dmamap_unload(txr, txd);
if (txd->m != NULL) {
m_freem(txd->m);
txd->m = NULL;
@@ -707,31 +572,31 @@ hn_txdesc_put(struct hn_softc *sc, struc
txd->flags |= HN_TXD_FLAG_ONLIST;
- mtx_lock_spin(&sc->hn_txlist_spin);
- KASSERT(sc->hn_txdesc_avail >= 0 &&
- sc->hn_txdesc_avail < sc->hn_txdesc_cnt,
- ("txdesc_put: invalid txd avail %d", sc->hn_txdesc_avail));
- sc->hn_txdesc_avail++;
- SLIST_INSERT_HEAD(&sc->hn_txlist, txd, link);
- mtx_unlock_spin(&sc->hn_txlist_spin);
+ mtx_lock_spin(&txr->hn_txlist_spin);
+ KASSERT(txr->hn_txdesc_avail >= 0 &&
+ txr->hn_txdesc_avail < txr->hn_txdesc_cnt,
+ ("txdesc_put: invalid txd avail %d", txr->hn_txdesc_avail));
+ txr->hn_txdesc_avail++;
+ SLIST_INSERT_HEAD(&txr->hn_txlist, txd, link);
+ mtx_unlock_spin(&txr->hn_txlist_spin);
return 1;
}
static __inline struct hn_txdesc *
-hn_txdesc_get(struct hn_softc *sc)
+hn_txdesc_get(struct hn_tx_ring *txr)
{
struct hn_txdesc *txd;
- mtx_lock_spin(&sc->hn_txlist_spin);
- txd = SLIST_FIRST(&sc->hn_txlist);
+ mtx_lock_spin(&txr->hn_txlist_spin);
+ txd = SLIST_FIRST(&txr->hn_txlist);
if (txd != NULL) {
- KASSERT(sc->hn_txdesc_avail > 0,
- ("txdesc_get: invalid txd avail %d", sc->hn_txdesc_avail));
- sc->hn_txdesc_avail--;
- SLIST_REMOVE_HEAD(&sc->hn_txlist, link);
+ KASSERT(txr->hn_txdesc_avail > 0,
+ ("txdesc_get: invalid txd avail %d", txr->hn_txdesc_avail));
+ txr->hn_txdesc_avail--;
+ SLIST_REMOVE_HEAD(&txr->hn_txlist, link);
}
- mtx_unlock_spin(&sc->hn_txlist_spin);
+ mtx_unlock_spin(&txr->hn_txlist_spin);
if (txd != NULL) {
KASSERT(txd->m == NULL && txd->refs == 0 &&
@@ -763,22 +628,24 @@ netvsc_xmit_completion(void *context)
{
netvsc_packet *packet = context;
struct hn_txdesc *txd;
- struct hn_softc *sc;
+ struct hn_tx_ring *txr;
txd = (struct hn_txdesc *)(uintptr_t)
packet->compl.send.send_completion_tid;
- sc = txd->sc;
- sc->hn_txeof = 1;
- hn_txdesc_put(sc, txd);
+ txr = txd->txr;
+ txr->hn_txeof = 1;
+ hn_txdesc_put(txr, txd);
}
void
netvsc_channel_rollup(struct hv_device *device_ctx)
{
struct hn_softc *sc = device_get_softc(device_ctx->device);
+ struct hn_tx_ring *txr = &sc->hn_tx_ring[0]; /* TODO: vRSS */
#if defined(INET) || defined(INET6)
- struct lro_ctrl *lro = &sc->hn_lro;
+ struct hn_rx_ring *rxr = &sc->hn_rx_ring[0]; /* TODO: vRSS */
+ struct lro_ctrl *lro = &rxr->hn_lro;
struct lro_entry *queued;
while ((queued = SLIST_FIRST(&lro->lro_active)) != NULL) {
@@ -787,11 +654,11 @@ netvsc_channel_rollup(struct hv_device *
}
#endif
- if (!sc->hn_txeof)
+ if (!txr->hn_txeof)
return;
- sc->hn_txeof = 0;
- hn_start_txeof(sc->hn_ifp);
+ txr->hn_txeof = 0;
+ hn_start_txeof(txr);
}
/*
@@ -799,7 +666,7 @@ netvsc_channel_rollup(struct hv_device *
* If this function fails, then both txd and m_head0 will be freed.
*/
static int
-hn_encap(struct hn_softc *sc, struct hn_txdesc *txd, struct mbuf **m_head0)
+hn_encap(struct hn_tx_ring *txr, struct hn_txdesc *txd, struct mbuf **m_head0)
{
bus_dma_segment_t segs[HN_TX_DATA_SEGCNT_MAX];
int error, nsegs, i;
@@ -902,7 +769,7 @@ hn_encap(struct hn_softc *sc, struct hn_
#endif
tso_info->lso_v2_xmit.tcp_header_offset = 0;
tso_info->lso_v2_xmit.mss = m_head->m_pkthdr.tso_segsz;
- } else if (m_head->m_pkthdr.csum_flags & sc->hn_csum_assist) {
+ } else if (m_head->m_pkthdr.csum_flags & txr->hn_csum_assist) {
rndis_tcp_ip_csum_info *csum_info;
rndis_msg_size += RNDIS_CSUM_PPI_SIZE;
@@ -929,8 +796,8 @@ hn_encap(struct hn_softc *sc, struct hn_
/*
* Chimney send, if the packet could fit into one chimney buffer.
*/
- if (packet->tot_data_buf_len < sc->hn_tx_chimney_size) {
- netvsc_dev *net_dev = sc->net_dev;
+ if (packet->tot_data_buf_len < txr->hn_tx_chimney_size) {
+ netvsc_dev *net_dev = txr->hn_sc->net_dev;
uint32_t send_buf_section_idx;
send_buf_section_idx =
@@ -949,12 +816,12 @@ hn_encap(struct hn_softc *sc, struct hn_
packet->send_buf_section_size =
packet->tot_data_buf_len;
packet->page_buf_count = 0;
- sc->hn_tx_chimney++;
+ txr->hn_tx_chimney++;
goto done;
}
}
- error = hn_txdesc_dmamap_load(sc, txd, &m_head, segs, &nsegs);
+ error = hn_txdesc_dmamap_load(txr, txd, &m_head, segs, &nsegs);
if (error) {
int freed;
@@ -964,12 +831,12 @@ hn_encap(struct hn_softc *sc, struct hn_
m_freem(m_head);
*m_head0 = NULL;
- freed = hn_txdesc_put(sc, txd);
+ freed = hn_txdesc_put(txr, txd);
KASSERT(freed != 0,
("fail to free txd upon txdma error"));
- sc->hn_txdma_failed++;
- if_inc_counter(sc->hn_ifp, IFCOUNTER_OERRORS, 1);
+ txr->hn_txdma_failed++;
+ if_inc_counter(txr->hn_sc->hn_ifp, IFCOUNTER_OERRORS, 1);
return error;
}
*m_head0 = m_head;
@@ -1012,11 +879,15 @@ done:
* Start a transmit of one or more packets
*/
static int
-hn_start_locked(struct ifnet *ifp, int len)
+hn_start_locked(struct hn_tx_ring *txr, int len)
{
- struct hn_softc *sc = ifp->if_softc;
+ struct hn_softc *sc = txr->hn_sc;
+ struct ifnet *ifp = sc->hn_ifp;
struct hv_device *device_ctx = vmbus_get_devctx(sc->hn_dev);
+ KASSERT(txr == &sc->hn_tx_ring[0], ("not the first TX ring"));
+ mtx_assert(&txr->hn_tx_lock, MA_OWNED);
+
if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
IFF_DRV_RUNNING)
return 0;
@@ -1040,15 +911,15 @@ hn_start_locked(struct ifnet *ifp, int l
return 1;
}
- txd = hn_txdesc_get(sc);
+ txd = hn_txdesc_get(txr);
if (txd == NULL) {
- sc->hn_no_txdescs++;
+ txr->hn_no_txdescs++;
IF_PREPEND(&ifp->if_snd, m_head);
atomic_set_int(&ifp->if_drv_flags, IFF_DRV_OACTIVE);
break;
}
- error = hn_encap(sc, txd, &m_head);
+ error = hn_encap(txr, txd, &m_head);
if (error) {
/* Both txd and m_head are freed */
continue;
@@ -1063,7 +934,7 @@ again:
ETHER_BPF_MTAP(ifp, m_head);
if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
}
- hn_txdesc_put(sc, txd);
+ hn_txdesc_put(txr, txd);
if (__predict_false(error)) {
int freed;
@@ -1075,9 +946,9 @@ again:
* commands to run? Ask netvsc_channel_rollup()
* to kick start later.
*/
- sc->hn_txeof = 1;
+ txr->hn_txeof = 1;
if (!send_failed) {
- sc->hn_send_failed++;
+ txr->hn_send_failed++;
send_failed = 1;
/*
* Try sending again after set hn_txeof;
@@ -1094,11 +965,11 @@ again:
* DMA map in hn_txdesc_put(), if it was loaded.
*/
txd->m = NULL;
- freed = hn_txdesc_put(sc, txd);
+ freed = hn_txdesc_put(txr, txd);
KASSERT(freed != 0,
("fail to free txd upon send error"));
- sc->hn_send_failed++;
+ txr->hn_send_failed++;
IF_PREPEND(&ifp->if_snd, m_head);
atomic_set_int(&ifp->if_drv_flags, IFF_DRV_OACTIVE);
break;
@@ -1194,10 +1065,10 @@ int
netvsc_recv(struct hv_device *device_ctx, netvsc_packet *packet,
rndis_tcp_ip_csum_info *csum_info)
{
- hn_softc_t *sc = (hn_softc_t *)device_get_softc(device_ctx->device);
+ struct hn_softc *sc = device_get_softc(device_ctx->device);
+ struct hn_rx_ring *rxr = &sc->hn_rx_ring[0]; /* TODO: vRSS */
struct mbuf *m_new;
struct ifnet *ifp;
- device_t dev = device_ctx->device;
int size, do_lro = 0, do_csum = 1;
if (sc == NULL) {
@@ -1224,7 +1095,7 @@ netvsc_recv(struct hv_device *device_ctx
memcpy(mtod(m_new, void *), packet->data,
packet->tot_data_buf_len);
m_new->m_pkthdr.len = m_new->m_len = packet->tot_data_buf_len;
- sc->hn_small_pkts++;
+ rxr->hn_small_pkts++;
} else {
/*
* Get an mbuf with a cluster. For packets 2K or less,
@@ -1240,7 +1111,7 @@ netvsc_recv(struct hv_device *device_ctx
m_new = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, size);
if (m_new == NULL) {
- device_printf(dev, "alloc mbuf failed.\n");
+ if_printf(ifp, "alloc mbuf failed.\n");
return (0);
}
@@ -1257,7 +1128,7 @@ netvsc_recv(struct hv_device *device_ctx
if (csum_info->receive.ip_csum_succeeded && do_csum) {
m_new->m_pkthdr.csum_flags |=
(CSUM_IP_CHECKED | CSUM_IP_VALID);
- sc->hn_csum_ip++;
+ rxr->hn_csum_ip++;
}
/* TCP/UDP csum offload */
@@ -1267,9 +1138,9 @@ netvsc_recv(struct hv_device *device_ctx
(CSUM_DATA_VALID | CSUM_PSEUDO_HDR);
m_new->m_pkthdr.csum_data = 0xffff;
if (csum_info->receive.tcp_csum_succeeded)
- sc->hn_csum_tcp++;
+ rxr->hn_csum_tcp++;
else
- sc->hn_csum_udp++;
+ rxr->hn_csum_udp++;
}
if (csum_info->receive.ip_csum_succeeded &&
@@ -1301,8 +1172,9 @@ netvsc_recv(struct hv_device *device_ctx
pr = hn_check_iplen(m_new, hoff);
if (pr == IPPROTO_TCP) {
if (do_csum &&
- (sc->hn_trust_hcsum & HN_TRUST_HCSUM_TCP)) {
- sc->hn_csum_trusted++;
+ (rxr->hn_trust_hcsum &
+ HN_TRUST_HCSUM_TCP)) {
+ rxr->hn_csum_trusted++;
m_new->m_pkthdr.csum_flags |=
(CSUM_IP_CHECKED | CSUM_IP_VALID |
CSUM_DATA_VALID | CSUM_PSEUDO_HDR);
@@ -1312,16 +1184,17 @@ netvsc_recv(struct hv_device *device_ctx
do_lro = 1;
} else if (pr == IPPROTO_UDP) {
if (do_csum &&
- (sc->hn_trust_hcsum & HN_TRUST_HCSUM_UDP)) {
- sc->hn_csum_trusted++;
+ (rxr->hn_trust_hcsum &
+ HN_TRUST_HCSUM_UDP)) {
+ rxr->hn_csum_trusted++;
m_new->m_pkthdr.csum_flags |=
(CSUM_IP_CHECKED | CSUM_IP_VALID |
CSUM_DATA_VALID | CSUM_PSEUDO_HDR);
m_new->m_pkthdr.csum_data = 0xffff;
}
} else if (pr != IPPROTO_DONE && do_csum &&
- (sc->hn_trust_hcsum & HN_TRUST_HCSUM_IP)) {
- sc->hn_csum_trusted++;
+ (rxr->hn_trust_hcsum & HN_TRUST_HCSUM_IP)) {
+ rxr->hn_csum_trusted++;
m_new->m_pkthdr.csum_flags |=
(CSUM_IP_CHECKED | CSUM_IP_VALID);
}
@@ -1343,10 +1216,10 @@ skip:
if ((ifp->if_capenable & IFCAP_LRO) && do_lro) {
#if defined(INET) || defined(INET6)
- struct lro_ctrl *lro = &sc->hn_lro;
+ struct lro_ctrl *lro = &rxr->hn_lro;
if (lro->lro_cnt) {
- sc->hn_lro_tried++;
+ rxr->hn_lro_tried++;
if (tcp_lro_rx(lro, m_new, 0) == 0) {
/* DONE! */
return 0;
@@ -1427,8 +1300,16 @@ hn_ioctl(struct ifnet *ifp, u_long cmd,
* Make sure that LRO aggregation length limit is still
* valid, after the MTU change.
*/
- if (sc->hn_lro.lro_length_lim < HN_LRO_LENLIM_MIN(ifp))
- sc->hn_lro.lro_length_lim = HN_LRO_LENLIM_MIN(ifp);
+ NV_LOCK(sc);
+ if (sc->hn_rx_ring[0].hn_lro.lro_length_lim <
+ HN_LRO_LENLIM_MIN(ifp)) {
+ int i;
+ for (i = 0; i < sc->hn_rx_ring_cnt; ++i) {
+ sc->hn_rx_ring[i].hn_lro.lro_length_lim =
+ HN_LRO_LENLIM_MIN(ifp);
+ }
+ }
+ NV_UNLOCK(sc);
#endif
do {
@@ -1469,8 +1350,10 @@ hn_ioctl(struct ifnet *ifp, u_long cmd,
}
sc->hn_tx_chimney_max = sc->net_dev->send_section_size;
- if (sc->hn_tx_chimney_size > sc->hn_tx_chimney_max)
- sc->hn_tx_chimney_size = sc->hn_tx_chimney_max;
+ if (sc->hn_tx_ring[0].hn_tx_chimney_size >
+ sc->hn_tx_chimney_max)
+ hn_set_tx_chimney_size(sc, sc->hn_tx_chimney_max);
+
hn_ifinit_locked(sc);
NV_LOCK(sc);
@@ -1535,10 +1418,13 @@ hn_ioctl(struct ifnet *ifp, u_long cmd,
mask = ifr->ifr_reqcap ^ ifp->if_capenable;
if (mask & IFCAP_TXCSUM) {
ifp->if_capenable ^= IFCAP_TXCSUM;
- if (ifp->if_capenable & IFCAP_TXCSUM)
- ifp->if_hwassist |= sc->hn_csum_assist;
- else
- ifp->if_hwassist &= ~sc->hn_csum_assist;
+ if (ifp->if_capenable & IFCAP_TXCSUM) {
+ ifp->if_hwassist |=
+ sc->hn_tx_ring[0].hn_csum_assist;
+ } else {
+ ifp->if_hwassist &=
+ ~sc->hn_tx_ring[0].hn_csum_assist;
+ }
}
if (mask & IFCAP_RXCSUM)
@@ -1621,50 +1507,54 @@ static void
hn_start(struct ifnet *ifp)
{
struct hn_softc *sc = ifp->if_softc;
+ struct hn_tx_ring *txr = &sc->hn_tx_ring[0];
- if (sc->hn_sched_tx)
+ if (txr->hn_sched_tx)
goto do_sched;
- if (NV_TRYLOCK(sc)) {
+ if (mtx_trylock(&txr->hn_tx_lock)) {
int sched;
- sched = hn_start_locked(ifp, sc->hn_direct_tx_size);
- NV_UNLOCK(sc);
+ sched = hn_start_locked(txr, txr->hn_direct_tx_size);
+ mtx_unlock(&txr->hn_tx_lock);
if (!sched)
return;
}
do_sched:
- taskqueue_enqueue_fast(sc->hn_tx_taskq, &sc->hn_start_task);
+ taskqueue_enqueue(txr->hn_tx_taskq, &txr->hn_start_task);
}
static void
-hn_start_txeof(struct ifnet *ifp)
+hn_start_txeof(struct hn_tx_ring *txr)
{
- struct hn_softc *sc = ifp->if_softc;
+ struct hn_softc *sc = txr->hn_sc;
+ struct ifnet *ifp = sc->hn_ifp;
- if (sc->hn_sched_tx)
+ KASSERT(txr == &sc->hn_tx_ring[0], ("not the first TX ring"));
+
+ if (txr->hn_sched_tx)
goto do_sched;
- if (NV_TRYLOCK(sc)) {
+ if (mtx_trylock(&txr->hn_tx_lock)) {
int sched;
atomic_clear_int(&ifp->if_drv_flags, IFF_DRV_OACTIVE);
- sched = hn_start_locked(ifp, sc->hn_direct_tx_size);
- NV_UNLOCK(sc);
+ sched = hn_start_locked(txr, txr->hn_direct_tx_size);
+ mtx_unlock(&txr->hn_tx_lock);
if (sched) {
- taskqueue_enqueue_fast(sc->hn_tx_taskq,
- &sc->hn_start_task);
*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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