Date: Fri, 14 Oct 2016 02:19:47 +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: r307245 - stable/10/sys/dev/hyperv/netvsc Message-ID: <201610140219.u9E2Jlxh045480@repo.freebsd.org>
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Author: sephe Date: Fri Oct 14 02:19:47 2016 New Revision: 307245 URL: https://svnweb.freebsd.org/changeset/base/307245 Log: MFC 305962,305964-305967 305962 hyperv/hn: Don't allow NVS and NDIS version change upon reinitailization NVS and NDIS version change would break too much assumption and static configuration. Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D7919 305964 hyperv/hn: Save capabilities for later use. And don't allow capability changes during reinitialization, which breaks too much static configuration. Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D7922 305965 hyperv/hn: Don't allow MTU change, if it is not supported by the NVS. Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D7923 305966 hyperv/hn: Stringent RSS sysctl checks - Don't change RNDIS RSS configuration for RSS key sysctl, if the interface is not capable of RSS yet. - Don't change RSS indirect table (both cached one and RNDIS RSS configuration), if the interface is not capable of RSS yet. Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D7924 305967 hyperv/hn: Allow RSS capability flipping upon attach/reinit. Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D7927 Modified: stable/10/sys/dev/hyperv/netvsc/hv_net_vsc.c 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/netvsc/hv_rndis_filter.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/dev/hyperv/netvsc/hv_net_vsc.c ============================================================================== --- stable/10/sys/dev/hyperv/netvsc/hv_net_vsc.c Fri Oct 14 02:03:53 2016 (r307244) +++ stable/10/sys/dev/hyperv/netvsc/hv_net_vsc.c Fri Oct 14 02:19:47 2016 (r307245) @@ -466,9 +466,15 @@ hn_nvs_conf_ndis(struct hn_softc *sc, in /* NOTE: No response. */ error = hn_nvs_req_send(sc, &conf, sizeof(conf)); - if (error) + if (error) { if_printf(sc->hn_ifp, "send nvs ndis conf failed: %d\n", error); - return (error); + return (error); + } + + if (bootverbose) + if_printf(sc->hn_ifp, "nvs ndis conf done\n"); + sc->hn_caps |= HN_CAP_MTU | HN_CAP_VLAN; + return (0); } static int @@ -494,6 +500,22 @@ hn_nvs_init(struct hn_softc *sc) { int i; + if (device_is_attached(sc->hn_dev)) { + /* + * NVS version and NDIS version MUST NOT be changed. + */ + if (bootverbose) { + if_printf(sc->hn_ifp, "reinit NVS version 0x%x, " + "NDIS version %u.%u\n", sc->hn_nvs_ver, + HN_NDIS_VERSION_MAJOR(sc->hn_ndis_ver), + HN_NDIS_VERSION_MINOR(sc->hn_ndis_ver)); + } + return (hn_nvs_doinit(sc, sc->hn_nvs_ver)); + } + + /* + * Find the supported NVS version and set NDIS version accordingly. + */ for (i = 0; i < nitems(hn_nvs_version); ++i) { int error; Modified: stable/10/sys/dev/hyperv/netvsc/hv_net_vsc.h ============================================================================== --- stable/10/sys/dev/hyperv/netvsc/hv_net_vsc.h Fri Oct 14 02:03:53 2016 (r307244) +++ stable/10/sys/dev/hyperv/netvsc/hv_net_vsc.h Fri Oct 14 02:19:47 2016 (r307245) @@ -229,7 +229,8 @@ struct hn_softc { struct vmbus_xact_ctx *hn_xact; uint32_t hn_nvs_ver; - uint32_t hn_flags; + uint32_t hn_caps; /* HN_CAP_ */ + uint32_t hn_flags; /* HN_FLAG_ */ void *hn_rxbuf; uint32_t hn_rxbuf_gpadl; struct hyperv_dma hn_rxbuf_dma; @@ -245,6 +246,18 @@ struct hn_softc { #define HN_FLAG_RXBUF_CONNECTED 0x0001 #define HN_FLAG_CHIM_CONNECTED 0x0002 +#define HN_FLAG_HAS_RSSKEY 0x0004 +#define HN_FLAG_HAS_RSSIND 0x0008 + +#define HN_CAP_VLAN 0x0001 +#define HN_CAP_MTU 0x0002 +#define HN_CAP_IPCS 0x0004 +#define HN_CAP_TCP4CS 0x0008 +#define HN_CAP_TCP6CS 0x0010 +#define HN_CAP_UDP4CS 0x0020 +#define HN_CAP_UDP6CS 0x0040 +#define HN_CAP_TSO4 0x0080 +#define HN_CAP_TSO6 0x0100 /* * Externs Modified: stable/10/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c ============================================================================== --- stable/10/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Fri Oct 14 02:03:53 2016 (r307244) +++ stable/10/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Fri Oct 14 02:19:47 2016 (r307245) @@ -327,6 +327,7 @@ static int hn_rx_stat_ulong_sysctl(SYSCT static int hn_tx_stat_ulong_sysctl(SYSCTL_HANDLER_ARGS); static int hn_tx_conf_int_sysctl(SYSCTL_HANDLER_ARGS); static int hn_ndis_version_sysctl(SYSCTL_HANDLER_ARGS); +static int hn_caps_sysctl(SYSCTL_HANDLER_ARGS); static int hn_rss_key_sysctl(SYSCTL_HANDLER_ARGS); static int hn_rss_ind_sysctl(SYSCTL_HANDLER_ARGS); static int hn_check_iplen(const struct mbuf *, int); @@ -436,6 +437,8 @@ hn_rss_ind_fixup(struct hn_softc *sc, in struct ndis_rssprm_toeplitz *rss = &sc->hn_rss; int i; + KASSERT(nchan > 1, ("invalid # of channels %d", nchan)); + /* * Check indirect table to make sure that all channels in it * can be used. @@ -657,6 +660,9 @@ netvsc_attach(device_t dev) SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "ndis_version", CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 0, hn_ndis_version_sysctl, "A", "NDIS version"); + SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "caps", + CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 0, + hn_caps_sysctl, "A", "capabilities"); SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rss_key", CTLTYPE_OPAQUE | CTLFLAG_RW | CTLFLAG_MPSAFE, sc, 0, hn_rss_key_sysctl, "IU", "RSS key"); @@ -1588,6 +1594,13 @@ hn_ioctl(struct ifnet *ifp, u_long cmd, HN_LOCK(sc); + if ((sc->hn_caps & HN_CAP_MTU) == 0) { + /* Can't change MTU */ + HN_UNLOCK(sc); + error = EOPNOTSUPP; + break; + } + if (ifp->if_mtu == ifr->ifr_mtu) { HN_UNLOCK(sc); break; @@ -2115,6 +2128,30 @@ hn_ndis_version_sysctl(SYSCTL_HANDLER_AR } static int +hn_caps_sysctl(SYSCTL_HANDLER_ARGS) +{ + struct hn_softc *sc = arg1; + char caps_str[128]; + uint32_t caps; + + HN_LOCK(sc); + caps = sc->hn_caps; + HN_UNLOCK(sc); + snprintf(caps_str, sizeof(caps_str), "%b", caps, + "\020" + "\001VLAN" + "\002MTU" + "\003IPCS" + "\004TCP4CS" + "\005TCP6CS" + "\006UDP4CS" + "\007UDP6CS" + "\010TSO4" + "\011TSO6"); + return sysctl_handle_string(oidp, caps_str, sizeof(caps_str), req); +} + +static int hn_rss_key_sysctl(SYSCTL_HANDLER_ARGS) { struct hn_softc *sc = arg1; @@ -2129,8 +2166,14 @@ hn_rss_key_sysctl(SYSCTL_HANDLER_ARGS) error = SYSCTL_IN(req, sc->hn_rss.rss_key, sizeof(sc->hn_rss.rss_key)); if (error) goto back; + sc->hn_flags |= HN_FLAG_HAS_RSSKEY; - error = hn_rss_reconfig(sc); + if (sc->hn_rx_ring_inuse > 1) { + error = hn_rss_reconfig(sc); + } else { + /* Not RSS capable, at least for now; just save the RSS key. */ + error = 0; + } back: HN_UNLOCK(sc); return (error); @@ -2148,9 +2191,19 @@ hn_rss_ind_sysctl(SYSCTL_HANDLER_ARGS) if (error || req->newptr == NULL) goto back; + /* + * Don't allow RSS indirect table change, if this interface is not + * RSS capable currently. + */ + if (sc->hn_rx_ring_inuse == 1) { + error = EOPNOTSUPP; + goto back; + } + error = SYSCTL_IN(req, sc->hn_rss.rss_ind, sizeof(sc->hn_rss.rss_ind)); if (error) goto back; + sc->hn_flags |= HN_FLAG_HAS_RSSIND; hn_rss_ind_fixup(sc, sc->hn_rx_ring_inuse); error = hn_rss_reconfig(sc); @@ -3243,6 +3296,11 @@ hn_synth_attach(struct hn_softc *sc, int { struct ndis_rssprm_toeplitz *rss = &sc->hn_rss; int error, nsubch, nchan, i; + uint32_t old_caps; + + /* Save capabilities for later verification. */ + old_caps = sc->hn_caps; + sc->hn_caps = 0; /* * Attach the primary channel _before_ attaching NVS and RNDIS. @@ -3266,6 +3324,17 @@ hn_synth_attach(struct hn_softc *sc, int return (error); /* + * Make sure capabilities are not changed. + */ + if (device_is_attached(sc->hn_dev) && old_caps != sc->hn_caps) { + if_printf(sc->hn_ifp, "caps mismatch old 0x%08x, new 0x%08x\n", + old_caps, sc->hn_caps); + /* Restore old capabilities and abort. */ + sc->hn_caps = old_caps; + return ENXIO; + } + + /* * Allocate sub-channels for multi-TX/RX rings. * * NOTE: @@ -3288,24 +3357,29 @@ hn_synth_attach(struct hn_softc *sc, int * are allocated. */ - if (!device_is_attached(sc->hn_dev)) { + if ((sc->hn_flags & HN_FLAG_HAS_RSSKEY) == 0) { /* - * Setup default RSS key and indirect table for the - * attach DEVMETHOD. They can be altered later on, - * so don't mess them up once this interface is attached. + * RSS key is not set yet; set it to the default RSS key. */ - if (bootverbose) { - if_printf(sc->hn_ifp, "setup default RSS key and " - "indirect table\n"); - } - - /* Setup default RSS key. */ + if (bootverbose) + if_printf(sc->hn_ifp, "setup default RSS key\n"); memcpy(rss->rss_key, hn_rss_key_default, sizeof(rss->rss_key)); + sc->hn_flags |= HN_FLAG_HAS_RSSKEY; + } - /* Setup default RSS indirect table. */ + if ((sc->hn_flags & HN_FLAG_HAS_RSSIND) == 0) { + /* + * RSS indirect table is not set yet; set it up in round- + * robin fashion. + */ + if (bootverbose) { + if_printf(sc->hn_ifp, "setup default RSS indirect " + "table\n"); + } /* TODO: Take ndis_rss_caps.ndis_nind into account. */ for (i = 0; i < NDIS_HASH_INDCNT; ++i) rss->rss_ind[i] = i % nchan; + sc->hn_flags |= HN_FLAG_HAS_RSSIND; } else { /* * # of usable channels may be changed, so we have to Modified: stable/10/sys/dev/hyperv/netvsc/hv_rndis_filter.c ============================================================================== --- stable/10/sys/dev/hyperv/netvsc/hv_rndis_filter.c Fri Oct 14 02:03:53 2016 (r307244) +++ stable/10/sys/dev/hyperv/netvsc/hv_rndis_filter.c Fri Oct 14 02:19:47 2016 (r307245) @@ -801,6 +801,7 @@ static int hn_rndis_conf_offload(struct hn_softc *sc) { struct ndis_offload_params params; + uint32_t caps; size_t paramsz; int error; @@ -817,24 +818,29 @@ hn_rndis_conf_offload(struct hn_softc *s } params.ndis_hdr.ndis_size = paramsz; + caps = HN_CAP_IPCS | HN_CAP_TCP4CS | HN_CAP_TCP6CS; params.ndis_ip4csum = NDIS_OFFLOAD_PARAM_TXRX; params.ndis_tcp4csum = NDIS_OFFLOAD_PARAM_TXRX; params.ndis_tcp6csum = NDIS_OFFLOAD_PARAM_TXRX; if (sc->hn_ndis_ver >= HN_NDIS_VERSION_6_30) { + caps |= HN_CAP_UDP4CS | HN_CAP_UDP6CS; params.ndis_udp4csum = NDIS_OFFLOAD_PARAM_TXRX; params.ndis_udp6csum = NDIS_OFFLOAD_PARAM_TXRX; } + caps |= HN_CAP_TSO4; params.ndis_lsov2_ip4 = NDIS_OFFLOAD_LSOV2_ON; /* XXX ndis_lsov2_ip6 = NDIS_OFFLOAD_LSOV2_ON */ error = hn_rndis_set(sc, OID_TCP_OFFLOAD_PARAMETERS, ¶ms, paramsz); if (error) { if_printf(sc->hn_ifp, "offload config failed: %d\n", error); - } else { - if (bootverbose) - if_printf(sc->hn_ifp, "offload config done\n"); + return (error); } - return (error); + + if (bootverbose) + if_printf(sc->hn_ifp, "offload config done\n"); + sc->hn_caps |= caps; + return (0); } int
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