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head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
| Show First 20 Lines • Show All 528 Lines • ▼ Show 20 Lines | SYSCTL_ADD_INT(ctx, child, OID_AUTO, "tx_chimney_max", | ||||
| CTLFLAG_RD, &sc->hn_tx_chimney_max, 0, | CTLFLAG_RD, &sc->hn_tx_chimney_max, 0, | ||||
| "Chimney send packet size upper boundary"); | "Chimney send packet size upper boundary"); | ||||
| SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "tx_chimney_size", | SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "tx_chimney_size", | ||||
| CTLTYPE_INT | CTLFLAG_RW, sc, 0, hn_tx_chimney_size_sysctl, | CTLTYPE_INT | CTLFLAG_RW, sc, 0, hn_tx_chimney_size_sysctl, | ||||
| "I", "Chimney send packet size limit"); | "I", "Chimney send packet size limit"); | ||||
| SYSCTL_ADD_INT(ctx, child, OID_AUTO, "direct_tx_size", | SYSCTL_ADD_INT(ctx, child, OID_AUTO, "direct_tx_size", | ||||
| CTLFLAG_RW, &sc->hn_direct_tx_size, 0, | CTLFLAG_RW, &sc->hn_direct_tx_size, 0, | ||||
| "Size of the packet for direct transmission"); | "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) { | if (unit == 0) { | ||||
| struct sysctl_ctx_list *dc_ctx; | struct sysctl_ctx_list *dc_ctx; | ||||
| struct sysctl_oid_list *dc_child; | struct sysctl_oid_list *dc_child; | ||||
| devclass_t dc; | devclass_t dc; | ||||
| /* | /* | ||||
| * Add sysctl nodes for devclass | * Add sysctl nodes for devclass | ||||
| ▲ Show 20 Lines • Show All 1,052 Lines • ▼ Show 20 Lines | |||||
| } | } | ||||
| /* | /* | ||||
| * FreeBSD transmit entry point | * FreeBSD transmit entry point | ||||
| */ | */ | ||||
| static void | static void | ||||
| hn_start(struct ifnet *ifp) | hn_start(struct ifnet *ifp) | ||||
| { | { | ||||
| hn_softc_t *sc; | struct hn_softc *sc = ifp->if_softc; | ||||
| sc = ifp->if_softc; | if (sc->hn_sched_tx) | ||||
| goto do_sched; | |||||
| if (NV_TRYLOCK(sc)) { | if (NV_TRYLOCK(sc)) { | ||||
| int sched; | int sched; | ||||
| sched = hn_start_locked(ifp, sc->hn_direct_tx_size); | sched = hn_start_locked(ifp, sc->hn_direct_tx_size); | ||||
| NV_UNLOCK(sc); | NV_UNLOCK(sc); | ||||
| if (!sched) | if (!sched) | ||||
| return; | return; | ||||
| } | } | ||||
| do_sched: | |||||
| taskqueue_enqueue_fast(sc->hn_tx_taskq, &sc->hn_start_task); | taskqueue_enqueue_fast(sc->hn_tx_taskq, &sc->hn_start_task); | ||||
| } | } | ||||
| static void | static void | ||||
| hn_start_txeof(struct ifnet *ifp) | hn_start_txeof(struct ifnet *ifp) | ||||
| { | { | ||||
| hn_softc_t *sc; | struct hn_softc *sc = ifp->if_softc; | ||||
| sc = ifp->if_softc; | if (sc->hn_sched_tx) | ||||
| goto do_sched; | |||||
| if (NV_TRYLOCK(sc)) { | if (NV_TRYLOCK(sc)) { | ||||
| int sched; | int sched; | ||||
| atomic_clear_int(&ifp->if_drv_flags, IFF_DRV_OACTIVE); | atomic_clear_int(&ifp->if_drv_flags, IFF_DRV_OACTIVE); | ||||
| sched = hn_start_locked(ifp, sc->hn_direct_tx_size); | sched = hn_start_locked(ifp, sc->hn_direct_tx_size); | ||||
| NV_UNLOCK(sc); | NV_UNLOCK(sc); | ||||
| if (sched) { | if (sched) { | ||||
| taskqueue_enqueue_fast(sc->hn_tx_taskq, | taskqueue_enqueue_fast(sc->hn_tx_taskq, | ||||
| &sc->hn_start_task); | &sc->hn_start_task); | ||||
| } | } | ||||
| } else { | } else { | ||||
| do_sched: | |||||
| /* | /* | ||||
| * Release the OACTIVE earlier, with the hope, that | * Release the OACTIVE earlier, with the hope, that | ||||
| * others could catch up. The task will clear the | * others could catch up. The task will clear the | ||||
| * flag again with the NV_LOCK to avoid possible | * flag again with the NV_LOCK to avoid possible | ||||
| * races. | * races. | ||||
| */ | */ | ||||
| atomic_clear_int(&ifp->if_drv_flags, IFF_DRV_OACTIVE); | atomic_clear_int(&ifp->if_drv_flags, IFF_DRV_OACTIVE); | ||||
| taskqueue_enqueue_fast(sc->hn_tx_taskq, &sc->hn_txeof_task); | taskqueue_enqueue_fast(sc->hn_tx_taskq, &sc->hn_txeof_task); | ||||
| ▲ Show 20 Lines • Show All 397 Lines • Show Last 20 Lines | |||||