Author: sephe Date: Tue Sep 20 05:26:40 2016 New Revision: 306013 URL: https://svnweb.freebsd.org/changeset/base/306013
Log: hyperv/hn: Fix ifnet hwassist setup. MFC after: 1 week Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D7948 Modified: head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Modified: head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c ============================================================================== --- head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Tue Sep 20 04:54:00 2016 (r306012) +++ head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Tue Sep 20 05:26:40 2016 (r306013) @@ -180,14 +180,6 @@ struct hn_txdesc { #define HN_TXD_FLAG_ONLIST 0x1 #define HN_TXD_FLAG_DMAMAP 0x2 -/* - * Only enable UDP checksum offloading when it is on 2012R2 or - * later. UDP checksum offloading doesn't work on earlier - * Windows releases. - */ -#define HN_CSUM_ASSIST_WIN8 (CSUM_IP | CSUM_TCP) -#define HN_CSUM_ASSIST (CSUM_IP | CSUM_UDP | CSUM_TCP) - #define HN_LRO_LENLIM_MULTIRX_DEF (12 * ETHERMTU) #define HN_LRO_LENLIM_DEF (25 * ETHERMTU) /* YYY 2*MTU is a bit rough, but should be good enough. */ @@ -202,6 +194,13 @@ struct hn_txdesc { #define HN_LOCK(sc) sx_xlock(&(sc)->hn_lock) #define HN_UNLOCK(sc) sx_xunlock(&(sc)->hn_lock) +#define HN_CSUM_IP_MASK (CSUM_IP | CSUM_IP_TCP | CSUM_IP_UDP) +#define HN_CSUM_IP6_MASK (CSUM_IP6_TCP | CSUM_IP6_UDP) +#define HN_CSUM_IP_HWASSIST(sc) \ + ((sc)->hn_tx_ring[0].hn_csum_assist & HN_CSUM_IP_MASK) +#define HN_CSUM_IP6_HWASSIST(sc) \ + ((sc)->hn_tx_ring[0].hn_csum_assist & HN_CSUM_IP6_MASK) + /* * Globals */ @@ -326,12 +325,14 @@ static int hn_tx_stat_ulong_sysctl(SYSCT 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_hwassist_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); 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 *, int); +static void hn_fixup_tx_data(struct hn_softc *); static void hn_destroy_tx_data(struct hn_softc *); static void hn_start_taskfunc(void *, int); static void hn_start_txeof_taskfunc(void *, int); @@ -632,10 +633,10 @@ netvsc_attach(device_t dev) } #endif - hn_set_chim_size(sc, sc->hn_chim_szmax); - if (hn_tx_chimney_size > 0 && - hn_tx_chimney_size < sc->hn_chim_szmax) - hn_set_chim_size(sc, hn_tx_chimney_size); + /* + * Fixup TX stuffs after synthetic parts are attached. + */ + hn_fixup_tx_data(sc); ctx = device_get_sysctl_ctx(dev); child = SYSCTL_CHILDREN(device_get_sysctl_tree(dev)); @@ -647,6 +648,9 @@ netvsc_attach(device_t dev) 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, "hwassist", + CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 0, + hn_hwassist_sysctl, "A", "hwassist"); SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rss_key", CTLTYPE_OPAQUE | CTLFLAG_RW | CTLFLAG_MPSAFE, sc, 0, hn_rss_key_sysctl, "IU", "RSS key"); @@ -681,13 +685,32 @@ netvsc_attach(device_t dev) ifp->if_qflush = hn_xmit_qflush; } - ifp->if_capabilities |= - IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU | IFCAP_HWCSUM | IFCAP_TSO | - IFCAP_LRO; - ifp->if_capenable |= - IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU | IFCAP_HWCSUM | IFCAP_TSO | - IFCAP_LRO; - ifp->if_hwassist = sc->hn_tx_ring[0].hn_csum_assist | CSUM_TSO; + ifp->if_capabilities |= IFCAP_RXCSUM | IFCAP_LRO; +#ifdef foo + /* We can't diff IPv6 packets from IPv4 packets on RX path. */ + ifp->if_capabilities |= IFCAP_RXCSUM_IPV6; +#endif + if (sc->hn_caps & HN_CAP_VLAN) { + /* XXX not sure about VLAN_MTU. */ + ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU; + } + + ifp->if_hwassist = sc->hn_tx_ring[0].hn_csum_assist; + if (ifp->if_hwassist & HN_CSUM_IP_MASK) + ifp->if_capabilities |= IFCAP_TXCSUM; + if (ifp->if_hwassist & HN_CSUM_IP6_MASK) + ifp->if_capabilities |= IFCAP_TXCSUM_IPV6; + if (sc->hn_caps & HN_CAP_TSO4) { + ifp->if_capabilities |= IFCAP_TSO4; + ifp->if_hwassist |= CSUM_IP_TSO; + } + if (sc->hn_caps & HN_CAP_TSO6) { + ifp->if_capabilities |= IFCAP_TSO6; + ifp->if_hwassist |= CSUM_IP6_TSO; + } + + /* Enable all available capabilities by default. */ + ifp->if_capenable = ifp->if_capabilities; tso_maxlen = hn_tso_maxlen; if (tso_maxlen <= 0 || tso_maxlen > IP_MAXPACKET) @@ -1041,14 +1064,19 @@ hn_encap(struct hn_tx_ring *txr, struct } else if (m_head->m_pkthdr.csum_flags & txr->hn_csum_assist) { pi_data = hn_rndis_pktinfo_append(pkt, HN_RNDIS_PKT_LEN, NDIS_TXCSUM_INFO_SIZE, NDIS_PKTINFO_TYPE_CSUM); - *pi_data = NDIS_TXCSUM_INFO_IPV4; - - if (m_head->m_pkthdr.csum_flags & CSUM_IP) - *pi_data |= NDIS_TXCSUM_INFO_IPCS; + if (m_head->m_pkthdr.csum_flags & + (CSUM_IP6_TCP | CSUM_IP6_UDP)) { + *pi_data = NDIS_TXCSUM_INFO_IPV6; + } else { + *pi_data = NDIS_TXCSUM_INFO_IPV4; + if (m_head->m_pkthdr.csum_flags & CSUM_IP) + *pi_data |= NDIS_TXCSUM_INFO_IPCS; + } - if (m_head->m_pkthdr.csum_flags & CSUM_TCP) + if (m_head->m_pkthdr.csum_flags & (CSUM_IP_TCP | CSUM_IP6_TCP)) *pi_data |= NDIS_TXCSUM_INFO_TCPCS; - else if (m_head->m_pkthdr.csum_flags & CSUM_UDP) + else if (m_head->m_pkthdr.csum_flags & + (CSUM_IP_UDP | CSUM_IP6_UDP)) *pi_data |= NDIS_TXCSUM_INFO_UDPCS; } @@ -1665,21 +1693,31 @@ hn_ioctl(struct ifnet *ifp, u_long cmd, case SIOCSIFCAP: HN_LOCK(sc); - 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_tx_ring[0].hn_csum_assist; - } else { - ifp->if_hwassist &= - ~sc->hn_tx_ring[0].hn_csum_assist; - } + if (ifp->if_capenable & IFCAP_TXCSUM) + ifp->if_hwassist |= HN_CSUM_IP_HWASSIST(sc); + else + ifp->if_hwassist &= ~HN_CSUM_IP_HWASSIST(sc); + } + if (mask & IFCAP_TXCSUM_IPV6) { + ifp->if_capenable ^= IFCAP_TXCSUM_IPV6; + if (ifp->if_capenable & IFCAP_TXCSUM_IPV6) + ifp->if_hwassist |= HN_CSUM_IP6_HWASSIST(sc); + else + ifp->if_hwassist &= ~HN_CSUM_IP6_HWASSIST(sc); } + /* TODO: flip RNDIS offload parameters for RXCSUM. */ if (mask & IFCAP_RXCSUM) ifp->if_capenable ^= IFCAP_RXCSUM; +#ifdef foo + /* We can't diff IPv6 packets from IPv4 packets on RX path. */ + if (mask & IFCAP_RXCSUM_IPV6) + ifp->if_capenable ^= IFCAP_RXCSUM_IPV6; +#endif if (mask & IFCAP_LRO) ifp->if_capenable ^= IFCAP_LRO; @@ -1691,7 +1729,6 @@ hn_ioctl(struct ifnet *ifp, u_long cmd, else ifp->if_hwassist &= ~CSUM_IP_TSO; } - if (mask & IFCAP_TSO6) { ifp->if_capenable ^= IFCAP_TSO6; if (ifp->if_capenable & IFCAP_TSO6) @@ -2132,6 +2169,20 @@ hn_caps_sysctl(SYSCTL_HANDLER_ARGS) } static int +hn_hwassist_sysctl(SYSCTL_HANDLER_ARGS) +{ + struct hn_softc *sc = arg1; + char assist_str[128]; + uint32_t hwassist; + + HN_LOCK(sc); + hwassist = sc->hn_ifp->if_hwassist; + HN_UNLOCK(sc); + snprintf(assist_str, sizeof(assist_str), "%b", hwassist, CSUM_BITS); + return sysctl_handle_string(oidp, assist_str, sizeof(assist_str), req); +} + +static int hn_rss_key_sysctl(SYSCTL_HANDLER_ARGS) { struct hn_softc *sc = arg1; @@ -2488,7 +2539,6 @@ hn_create_tx_ring(struct hn_softc *sc, i device_t dev = sc->hn_dev; bus_dma_tag_t parent_dtag; int error, i; - uint32_t version; txr->hn_sc = sc; txr->hn_tx_idx = id; @@ -2527,18 +2577,6 @@ hn_create_tx_ring(struct hn_softc *sc, i } txr->hn_direct_tx_size = hn_direct_tx_size; - version = VMBUS_GET_VERSION(device_get_parent(dev), dev); - if (version >= VMBUS_VERSION_WIN8_1) { - txr->hn_csum_assist = HN_CSUM_ASSIST; - } else { - txr->hn_csum_assist = HN_CSUM_ASSIST_WIN8; - if (id == 0) { - device_printf(dev, "bus version %u.%u, " - "no UDP checksum offloading\n", - VMBUS_VERSION_MAJOR(version), - VMBUS_VERSION_MINOR(version)); - } - } /* * Always schedule transmission instead of trying to do direct @@ -2834,6 +2872,35 @@ hn_set_chim_size(struct hn_softc *sc, in } static void +hn_fixup_tx_data(struct hn_softc *sc) +{ + uint64_t csum_assist; + int i; + + hn_set_chim_size(sc, sc->hn_chim_szmax); + if (hn_tx_chimney_size > 0 && + hn_tx_chimney_size < sc->hn_chim_szmax) + hn_set_chim_size(sc, hn_tx_chimney_size); + + csum_assist = 0; + if (sc->hn_caps & HN_CAP_IPCS) + csum_assist |= CSUM_IP; + if (sc->hn_caps & HN_CAP_TCP4CS) + csum_assist |= CSUM_IP_TCP; + if (sc->hn_caps & HN_CAP_UDP4CS) + csum_assist |= CSUM_IP_UDP; +#ifdef notyet + if (sc->hn_caps & HN_CAP_TCP6CS) + csum_assist |= CSUM_IP6_TCP; + if (sc->hn_caps & HN_CAP_UDP6CS) + csum_assist |= CSUM_IP6_UDP; +#endif + + for (i = 0; i < sc->hn_tx_ring_cnt; ++i) + sc->hn_tx_ring[i].hn_csum_assist = csum_assist; +} + +static void hn_destroy_tx_data(struct hn_softc *sc) { int i; _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
