Date: Tue, 21 Jun 2016 06:37:38 +0000 (UTC) From: Sepherosa Ziehau <sephe@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r302049 - in stable/10/sys/dev/hyperv: netvsc storvsc Message-ID: <201606210637.u5L6bcnT020601@repo.freebsd.org>
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Author: sephe Date: Tue Jun 21 06:37:38 2016 New Revision: 302049 URL: https://svnweb.freebsd.org/changeset/base/302049 Log: MFC 298618,298620,298688,298689 298618 hyperv/stor: Set description properly in probe devmethod MFC after: 1 week Sponsored by: Microsoft OSTC 298620 hyperv/hn: Change description to "Hyper-V Network Interface" This is consistent w/ other Hyper-V devices. MFC after: 1 week Sponsored by: Microsoft OSTC 298688 hyperv/hn: Restart sending earlier once we gathered some free TX descs This greatly reduces the oqdrops under heavy workload. For TCP send/recv test (10K concurrent connections): oqdrops is reduced by 17% on sending side, and 57% on receiving side. For nginx-1.8/wrk-4 1KB object test (10K concurrent connections, 4 requests/connection): oqdrops is reduced by 44% on nginx side, and 10% on wrk side. MFC after: 1 week Sponsored by: Microsoft OSTC 298689 hyperv/hn: Remove unapplied comment. Chimney sending buffers are shared across channels. MFC after: 1 week Sponsored by: Microsoft OSTC Modified: stable/10/sys/dev/hyperv/netvsc/hv_net_vsc.h stable/10/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c stable/10/sys/dev/hyperv/storvsc/hv_storvsc_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 Tue Jun 21 06:18:41 2016 (r302048) +++ stable/10/sys/dev/hyperv/netvsc/hv_net_vsc.h Tue Jun 21 06:37:38 2016 (r302049) @@ -1185,7 +1185,8 @@ struct hn_tx_ring { #endif int hn_txdesc_cnt; int hn_txdesc_avail; - int hn_has_txeof; + u_short hn_has_txeof; + u_short hn_txdone_cnt; int hn_sched_tx; void (*hn_txeof)(struct hn_tx_ring *); Modified: stable/10/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c ============================================================================== --- stable/10/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Tue Jun 21 06:18:41 2016 (r302048) +++ stable/10/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Tue Jun 21 06:37:38 2016 (r302049) @@ -157,6 +157,8 @@ __FBSDID("$FreeBSD$"); #define HN_DIRECT_TX_SIZE_DEF 128 +#define HN_EARLY_TXEOF_THRESH 8 + struct hn_txdesc { #ifndef HN_USE_TXDESC_BUFRING SLIST_ENTRY(hn_txdesc) link; @@ -406,7 +408,7 @@ netvsc_probe(device_t dev) p = vmbus_get_type(dev); if (!memcmp(p, &g_net_vsc_device_type.data, sizeof(hv_guid))) { - device_set_desc(dev, "Synthetic Network Interface"); + device_set_desc(dev, "Hyper-V Network Interface"); if (bootverbose) printf("Netvsc probe... DONE \n"); @@ -805,6 +807,13 @@ hn_txdesc_hold(struct hn_txdesc *txd) atomic_add_int(&txd->refs, 1); } +static __inline void +hn_txeof(struct hn_tx_ring *txr) +{ + txr->hn_has_txeof = 0; + txr->hn_txeof(txr); +} + static void hn_tx_done(struct hv_vmbus_channel *chan, void *xpkt) { @@ -823,6 +832,13 @@ hn_tx_done(struct hv_vmbus_channel *chan txr->hn_has_txeof = 1; hn_txdesc_put(txr, txd); + + ++txr->hn_txdone_cnt; + if (txr->hn_txdone_cnt >= HN_EARLY_TXEOF_THRESH) { + txr->hn_txdone_cnt = 0; + if (txr->hn_oactive) + hn_txeof(txr); + } } void @@ -848,8 +864,8 @@ netvsc_channel_rollup(struct hv_vmbus_ch if (txr == NULL || !txr->hn_has_txeof) return; - txr->hn_has_txeof = 0; - txr->hn_txeof(txr); + txr->hn_txdone_cnt = 0; + hn_txeof(txr); } /* @@ -999,8 +1015,6 @@ hn_encap(struct hn_tx_ring *txr, struct /* * Chimney send, if the packet could fit into one chimney buffer. - * - * TODO: vRSS, chimney buffer should be per-channel. */ if (packet->tot_data_buf_len < txr->hn_tx_chimney_size) { netvsc_dev *net_dev = txr->hn_sc->net_dev; Modified: stable/10/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c ============================================================================== --- stable/10/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c Tue Jun 21 06:18:41 2016 (r302048) +++ stable/10/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c Tue Jun 21 06:37:38 2016 (r302049) @@ -957,6 +957,7 @@ storvsc_probe(device_t dev) if(bootverbose) device_printf(dev, "Enlightened ATA/IDE detected\n"); + device_set_desc(dev, g_drv_props_table[DRIVER_BLKVSC].drv_desc); ret = BUS_PROBE_DEFAULT; } else if(bootverbose) device_printf(dev, "Emulated ATA/IDE set (hw.ata.disk_enable set)\n"); @@ -964,6 +965,7 @@ storvsc_probe(device_t dev) case DRIVER_STORVSC: if(bootverbose) device_printf(dev, "Enlightened SCSI device detected\n"); + device_set_desc(dev, g_drv_props_table[DRIVER_STORVSC].drv_desc); ret = BUS_PROBE_DEFAULT; break; default: @@ -1015,7 +1017,6 @@ storvsc_attach(device_t dev) /* fill in device specific properties */ sc->hs_unit = device_get_unit(dev); sc->hs_dev = hv_dev; - device_set_desc(dev, g_drv_props_table[stor_type].drv_desc); LIST_INIT(&sc->hs_free_list); mtx_init(&sc->hs_lock, "hvslck", NULL, MTX_DEF);
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