Date: Mon, 13 Jun 2016 05:43:42 +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: r301856 - stable/10/sys/dev/hyperv/netvsc Message-ID: <201606130543.u5D5hgak046905@repo.freebsd.org>
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Author: sephe Date: Mon Jun 13 05:43:42 2016 New Revision: 301856 URL: https://svnweb.freebsd.org/changeset/base/301856 Log: MFC 295296,295297,295298,295299,295300,295301 295296 hyperv/hn: Avoid duplicate csum features settings - Record csum features in softc, so we don't need to duplicate the logic from attach path to ioctl path. - Protect if_capenable and if_hwassist changes by main lock. - Prefer turn on/off bits in if_hwassist explicitly instead of using XOR. 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/D5085 295297 hyperv/hn: Reorganize TX csum offloading - For non-TSO offloading, we don't need to access mbuf to know which csum offloading is requested, we can just use the CSUM_{IP,TCP,UDP} in the csum_flags. - For TSO offloading, we still can depend on CSUM_{TSO4,TSO6} in the csum_flags to tell whether the TSO packet is an IPv4 TSO packet or an IPv6 TSO packet. This streamlines csum offloading handling (remove the two goto) and allows us the nuke the unnecessary get_transport_proto_type(). 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/D5098 295298 hyperv/hn: Enable IP header checksum offloading So that: - TCP/IP stack will not do unnecessary IP header checksum for TSO packets. - Reduce guest load for non-TSO IP packets. Reviewed by: adrian Approved by: adrian (mentor) MFC after: 1 week Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D5099 295299 hyperv/hn: Enable UDP RXCSUM Reviewed by: adrian Approved by: adrian (mentor) MFC after: 1 week Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D5102 295300 hyperv/hn: Add sysctls to trust host side UDP and IP csum verification 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/D5103 295301 hyperv/hn: Obey IFCAP_RXCSUM configure Reviewed by: adrian Approved by: adrian (mentor) MFC after: 1 week Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D5104 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 05:13:52 2016 (r301855) +++ stable/10/sys/dev/hyperv/netvsc/hv_net_vsc.h Mon Jun 13 05:43:42 2016 (r301856) @@ -1016,6 +1016,7 @@ typedef struct hn_softc { bus_dma_tag_t hn_tx_rndis_dtag; int hn_tx_chimney_size; int hn_tx_chimney_max; + uint64_t hn_csum_assist; struct mtx hn_txlist_spin; struct hn_txdesc_list hn_txlist; @@ -1031,11 +1032,12 @@ typedef struct hn_softc { struct lro_ctrl hn_lro; int hn_lro_hiwat; - /* Trust tcp segments verification on host side */ - int hn_trust_hosttcp; + /* 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; @@ -1046,6 +1048,9 @@ typedef struct hn_softc { 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 /* * 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 05:13:52 2016 (r301855) +++ stable/10/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Mon Jun 13 05:43:42 2016 (r301856) @@ -167,14 +167,12 @@ struct hn_txdesc { #define HN_TXD_FLAG_DMAMAP 0x2 /* - * A unified flag for all outbound check sum flags is useful, - * and it helps avoiding unnecessary check sum calculation in - * network forwarding scenario. + * Only enable UDP checksum offloading when it is on 2012R2 or + * later. UDP checksum offloading doesn't work on earlier + * Windows releases. */ -#define HV_CSUM_FOR_OUTBOUND \ - (CSUM_IP|CSUM_IP_UDP|CSUM_IP_TCP|CSUM_IP_SCTP|CSUM_IP_TSO| \ - CSUM_IP_ISCSI|CSUM_IP6_UDP|CSUM_IP6_TCP|CSUM_IP6_SCTP| \ - CSUM_IP6_TSO|CSUM_IP6_ISCSI) +#define HN_CSUM_ASSIST_WIN8 (CSUM_TCP) +#define HN_CSUM_ASSIST (CSUM_IP | CSUM_UDP | CSUM_TCP) /* XXX move to netinet/tcp_lro.h */ #define HN_LRO_HIWAT_MAX 65535 @@ -212,6 +210,14 @@ int hv_promisc_mode = 0; /* normal mo static int hn_trust_hosttcp = 1; TUNABLE_INT("dev.hn.trust_hosttcp", &hn_trust_hosttcp); +/* Trust udp datagrams verification on host side. */ +static int hn_trust_hostudp = 1; +TUNABLE_INT("dev.hn.trust_hostudp", &hn_trust_hostudp); + +/* Trust ip packets verification on host side. */ +static int hn_trust_hostip = 1; +TUNABLE_INT("dev.hn.trust_hostip", &hn_trust_hostip); + #if __FreeBSD_version >= 1100045 /* Limit TSO burst size */ static int hn_tso_maxlen = 0; @@ -241,6 +247,7 @@ static void hn_ifmedia_sts(struct ifnet #ifdef HN_LRO_HIWAT static int hn_lro_hiwat_sysctl(SYSCTL_HANDLER_ARGS); #endif +static int hn_trust_hcsum_sysctl(SYSCTL_HANDLER_ARGS); static int hn_tx_chimney_size_sysctl(SYSCTL_HANDLER_ARGS); static int hn_check_iplen(const struct mbuf *, int); static int hn_create_tx_ring(struct hn_softc *sc); @@ -257,62 +264,6 @@ hn_set_lro_hiwat(struct hn_softc *sc, in #endif } -/* - * NetVsc get message transport protocol type - */ -static uint32_t get_transport_proto_type(struct mbuf *m_head) -{ - uint32_t ret_val = TRANSPORT_TYPE_NOT_IP; - uint16_t ether_type = 0; - int ether_len = 0; - struct ether_vlan_header *eh; -#ifdef INET - struct ip *iph; -#endif -#ifdef INET6 - struct ip6_hdr *ip6; -#endif - - eh = mtod(m_head, struct ether_vlan_header*); - if (eh->evl_encap_proto == htons(ETHERTYPE_VLAN)) { - ether_len = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN; - ether_type = eh->evl_proto; - } else { - ether_len = ETHER_HDR_LEN; - ether_type = eh->evl_encap_proto; - } - - switch (ntohs(ether_type)) { -#ifdef INET6 - case ETHERTYPE_IPV6: - ip6 = (struct ip6_hdr *)(m_head->m_data + ether_len); - - if (IPPROTO_TCP == ip6->ip6_nxt) { - ret_val = TRANSPORT_TYPE_IPV6_TCP; - } else if (IPPROTO_UDP == ip6->ip6_nxt) { - ret_val = TRANSPORT_TYPE_IPV6_UDP; - } - break; -#endif -#ifdef INET - case ETHERTYPE_IP: - iph = (struct ip *)(m_head->m_data + ether_len); - - if (IPPROTO_TCP == iph->ip_p) { - ret_val = TRANSPORT_TYPE_IPV4_TCP; - } else if (IPPROTO_UDP == iph->ip_p) { - ret_val = TRANSPORT_TYPE_IPV4_UDP; - } - break; -#endif - default: - ret_val = TRANSPORT_TYPE_NOT_IP; - break; - } - - return (ret_val); -} - static int hn_ifmedia_upd(struct ifnet *ifp __unused) { @@ -393,8 +344,13 @@ netvsc_attach(device_t dev) sc->hn_unit = unit; sc->hn_dev = dev; sc->hn_lro_hiwat = HN_LRO_HIWAT_DEF; - sc->hn_trust_hosttcp = hn_trust_hosttcp; 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; sc->hn_tx_taskq = taskqueue_create_fast("hn_tx", M_WAITOK, taskqueue_thread_enqueue, &sc->hn_tx_taskq); @@ -444,15 +400,12 @@ netvsc_attach(device_t dev) ifp->if_capenable |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU | IFCAP_HWCSUM | IFCAP_TSO | IFCAP_LRO; - /* - * Only enable UDP checksum offloading when it is on 2012R2 or - * later. UDP checksum offloading doesn't work on earlier - * Windows releases. - */ + if (hv_vmbus_protocal_version >= HV_VMBUS_VERSION_WIN8_1) - ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_TSO; + sc->hn_csum_assist = HN_CSUM_ASSIST; else - ifp->if_hwassist = CSUM_TCP | CSUM_TSO; + sc->hn_csum_assist = HN_CSUM_ASSIST_WIN8; + ifp->if_hwassist = sc->hn_csum_assist | CSUM_TSO; error = hv_rf_on_device_add(device_ctx, &device_info); if (error) @@ -509,17 +462,30 @@ netvsc_attach(device_t dev) CTLTYPE_INT | CTLFLAG_RW, sc, 0, hn_lro_hiwat_sysctl, "I", "LRO high watermark"); #endif - SYSCTL_ADD_INT(ctx, child, OID_AUTO, "trust_hosttcp", - CTLFLAG_RW, &sc->hn_trust_hosttcp, 0, + 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 TCP segements that we trust host's csum verification"); + "# 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", @@ -562,6 +528,14 @@ netvsc_attach(device_t dev) 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"); @@ -778,16 +752,13 @@ hn_start_locked(struct ifnet *ifp, int l hn_softc_t *sc = ifp->if_softc; struct hv_device *device_ctx = vmbus_get_devctx(sc->hn_dev); netvsc_dev *net_dev = sc->net_dev; - struct ether_vlan_header *eh; rndis_msg *rndis_mesg; rndis_packet *rndis_pkt; rndis_per_packet_info *rppi; ndis_8021q_info *rppi_vlan_info; rndis_tcp_ip_csum_info *csum_info; rndis_tcp_tso_info *tso_info; - int ether_len; uint32_t rndis_msg_size = 0; - uint32_t trans_proto_type; if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != IFF_DRV_RUNNING) @@ -867,101 +838,81 @@ hn_start_locked(struct ifnet *ifp, int l m_head->m_pkthdr.ether_vtag & 0xfff; } - /* Only check the flags for outbound and ignore the ones for inbound */ - if (0 == (m_head->m_pkthdr.csum_flags & HV_CSUM_FOR_OUTBOUND)) { - goto pre_send; - } - - eh = mtod(m_head, struct ether_vlan_header*); - if (eh->evl_encap_proto == htons(ETHERTYPE_VLAN)) { - ether_len = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN; - } else { - ether_len = ETHER_HDR_LEN; - } - - trans_proto_type = get_transport_proto_type(m_head); - if (TRANSPORT_TYPE_NOT_IP == trans_proto_type) { - goto pre_send; - } - - /* - * TSO packet needless to setup the send side checksum - * offload. - */ if (m_head->m_pkthdr.csum_flags & CSUM_TSO) { - goto do_tso; - } + struct ether_vlan_header *eh; + int ether_len; - /* setup checksum offload */ - rndis_msg_size += RNDIS_CSUM_PPI_SIZE; - rppi = hv_set_rppi_data(rndis_mesg, RNDIS_CSUM_PPI_SIZE, - tcpip_chksum_info); - csum_info = (rndis_tcp_ip_csum_info *)((char*)rppi + - rppi->per_packet_info_offset); + eh = mtod(m_head, struct ether_vlan_header*); + if (eh->evl_encap_proto == htons(ETHERTYPE_VLAN)) { + ether_len = ETHER_HDR_LEN + + ETHER_VLAN_ENCAP_LEN; + } else { + ether_len = ETHER_HDR_LEN; + } - if (trans_proto_type & (TYPE_IPV4 << 16)) { - csum_info->xmit.is_ipv4 = 1; - } else { - csum_info->xmit.is_ipv6 = 1; - } + rndis_msg_size += RNDIS_TSO_PPI_SIZE; + rppi = hv_set_rppi_data(rndis_mesg, RNDIS_TSO_PPI_SIZE, + tcp_large_send_info); - if (trans_proto_type & TYPE_TCP) { - csum_info->xmit.tcp_csum = 1; - csum_info->xmit.tcp_header_offset = 0; - } else if (trans_proto_type & TYPE_UDP) { - csum_info->xmit.udp_csum = 1; - } - - goto pre_send; + tso_info = (rndis_tcp_tso_info *)((char *)rppi + + rppi->per_packet_info_offset); + tso_info->lso_v2_xmit.type = + RNDIS_TCP_LARGE_SEND_OFFLOAD_V2_TYPE; -do_tso: - /* setup TCP segmentation offload */ - rndis_msg_size += RNDIS_TSO_PPI_SIZE; - rppi = hv_set_rppi_data(rndis_mesg, RNDIS_TSO_PPI_SIZE, - tcp_large_send_info); - - tso_info = (rndis_tcp_tso_info *)((char *)rppi + - rppi->per_packet_info_offset); - tso_info->lso_v2_xmit.type = - RNDIS_TCP_LARGE_SEND_OFFLOAD_V2_TYPE; - #ifdef INET - if (trans_proto_type & (TYPE_IPV4 << 16)) { - struct ip *ip = - (struct ip *)(m_head->m_data + ether_len); - unsigned long iph_len = ip->ip_hl << 2; - struct tcphdr *th = - (struct tcphdr *)((caddr_t)ip + iph_len); - - tso_info->lso_v2_xmit.ip_version = - RNDIS_TCP_LARGE_SEND_OFFLOAD_IPV4; - ip->ip_len = 0; - ip->ip_sum = 0; - - th->th_sum = in_pseudo(ip->ip_src.s_addr, - ip->ip_dst.s_addr, - htons(IPPROTO_TCP)); - } + if (m_head->m_pkthdr.csum_flags & CSUM_IP_TSO) { + struct ip *ip = + (struct ip *)(m_head->m_data + ether_len); + unsigned long iph_len = ip->ip_hl << 2; + struct tcphdr *th = + (struct tcphdr *)((caddr_t)ip + iph_len); + + tso_info->lso_v2_xmit.ip_version = + RNDIS_TCP_LARGE_SEND_OFFLOAD_IPV4; + ip->ip_len = 0; + ip->ip_sum = 0; + + th->th_sum = in_pseudo(ip->ip_src.s_addr, + ip->ip_dst.s_addr, htons(IPPROTO_TCP)); + } #endif #if defined(INET6) && defined(INET) - else + else #endif #ifdef INET6 - { - struct ip6_hdr *ip6 = - (struct ip6_hdr *)(m_head->m_data + ether_len); - struct tcphdr *th = (struct tcphdr *)(ip6 + 1); - - tso_info->lso_v2_xmit.ip_version = - RNDIS_TCP_LARGE_SEND_OFFLOAD_IPV6; - ip6->ip6_plen = 0; - th->th_sum = in6_cksum_pseudo(ip6, 0, IPPROTO_TCP, 0); - } + { + struct ip6_hdr *ip6 = (struct ip6_hdr *) + (m_head->m_data + ether_len); + struct tcphdr *th = (struct tcphdr *)(ip6 + 1); + + tso_info->lso_v2_xmit.ip_version = + RNDIS_TCP_LARGE_SEND_OFFLOAD_IPV6; + ip6->ip6_plen = 0; + th->th_sum = + in6_cksum_pseudo(ip6, 0, IPPROTO_TCP, 0); + } #endif - tso_info->lso_v2_xmit.tcp_header_offset = 0; - tso_info->lso_v2_xmit.mss = m_head->m_pkthdr.tso_segsz; + 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) { + rndis_msg_size += RNDIS_CSUM_PPI_SIZE; + rppi = hv_set_rppi_data(rndis_mesg, RNDIS_CSUM_PPI_SIZE, + tcpip_chksum_info); + csum_info = (rndis_tcp_ip_csum_info *)((char*)rppi + + rppi->per_packet_info_offset); + + csum_info->xmit.is_ipv4 = 1; + if (m_head->m_pkthdr.csum_flags & CSUM_IP) + csum_info->xmit.ip_header_csum = 1; + + if (m_head->m_pkthdr.csum_flags & CSUM_TCP) { + csum_info->xmit.tcp_csum = 1; + csum_info->xmit.tcp_header_offset = 0; + } else if (m_head->m_pkthdr.csum_flags & CSUM_UDP) { + csum_info->xmit.udp_csum = 1; + } + } -pre_send: rndis_mesg->msg_len = packet->tot_data_buf_len + rndis_msg_size; packet->tot_data_buf_len = rndis_mesg->msg_len; @@ -1191,7 +1142,7 @@ netvsc_recv(struct hv_device *device_ctx struct mbuf *m_new; struct ifnet *ifp; device_t dev = device_ctx->device; - int size, do_lro = 0; + int size, do_lro = 0, do_csum = 1; if (sc == NULL) { return (0); /* TODO: KYS how can this be! */ @@ -1241,21 +1192,28 @@ netvsc_recv(struct hv_device *device_ctx } m_new->m_pkthdr.rcvif = ifp; + if (__predict_false((ifp->if_capenable & IFCAP_RXCSUM) == 0)) + do_csum = 0; + /* receive side checksum offload */ - if (NULL != csum_info) { + if (csum_info != NULL) { /* IP csum offload */ - if (csum_info->receive.ip_csum_succeeded) { + 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++; } - /* TCP csum offload */ - if (csum_info->receive.tcp_csum_succeeded) { + /* TCP/UDP csum offload */ + if ((csum_info->receive.tcp_csum_succeeded || + csum_info->receive.udp_csum_succeeded) && do_csum) { m_new->m_pkthdr.csum_flags |= (CSUM_DATA_VALID | CSUM_PSEUDO_HDR); m_new->m_pkthdr.csum_data = 0xffff; - sc->hn_csum_tcp++; + if (csum_info->receive.tcp_csum_succeeded) + sc->hn_csum_tcp++; + else + sc->hn_csum_udp++; } if (csum_info->receive.ip_csum_succeeded && @@ -1286,7 +1244,8 @@ netvsc_recv(struct hv_device *device_ctx pr = hn_check_iplen(m_new, hoff); if (pr == IPPROTO_TCP) { - if (sc->hn_trust_hosttcp) { + if (do_csum && + (sc->hn_trust_hcsum & HN_TRUST_HCSUM_TCP)) { sc->hn_csum_trusted++; m_new->m_pkthdr.csum_flags |= (CSUM_IP_CHECKED | CSUM_IP_VALID | @@ -1295,6 +1254,20 @@ netvsc_recv(struct hv_device *device_ctx } /* Rely on SW csum verification though... */ do_lro = 1; + } else if (pr == IPPROTO_UDP) { + if (do_csum && + (sc->hn_trust_hcsum & HN_TRUST_HCSUM_UDP)) { + sc->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++; + m_new->m_pkthdr.csum_flags |= + (CSUM_IP_CHECKED | CSUM_IP_VALID); } } } @@ -1508,47 +1481,40 @@ hn_ioctl(struct ifnet *ifp, u_long cmd, error = 0; break; case SIOCSIFCAP: + NV_LOCK(sc); + mask = ifr->ifr_reqcap ^ ifp->if_capenable; if (mask & IFCAP_TXCSUM) { - if (IFCAP_TXCSUM & ifp->if_capenable) { - ifp->if_capenable &= ~IFCAP_TXCSUM; - ifp->if_hwassist &= ~(CSUM_TCP | CSUM_UDP); - } else { - ifp->if_capenable |= IFCAP_TXCSUM; - /* - * Only enable UDP checksum offloading on - * Windows Server 2012R2 or later releases. - */ - if (hv_vmbus_protocal_version >= - HV_VMBUS_VERSION_WIN8_1) { - ifp->if_hwassist |= - (CSUM_TCP | CSUM_UDP); - } else { - ifp->if_hwassist |= CSUM_TCP; - } - } + 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 (mask & IFCAP_RXCSUM) { - if (IFCAP_RXCSUM & ifp->if_capenable) { - ifp->if_capenable &= ~IFCAP_RXCSUM; - } else { - ifp->if_capenable |= IFCAP_RXCSUM; - } - } + if (mask & IFCAP_RXCSUM) + ifp->if_capenable ^= IFCAP_RXCSUM; + if (mask & IFCAP_LRO) ifp->if_capenable ^= IFCAP_LRO; if (mask & IFCAP_TSO4) { ifp->if_capenable ^= IFCAP_TSO4; - ifp->if_hwassist ^= CSUM_IP_TSO; + if (ifp->if_capenable & IFCAP_TSO4) + ifp->if_hwassist |= CSUM_IP_TSO; + else + ifp->if_hwassist &= ~CSUM_IP_TSO; } if (mask & IFCAP_TSO6) { ifp->if_capenable ^= IFCAP_TSO6; - ifp->if_hwassist ^= CSUM_IP6_TSO; + if (ifp->if_capenable & IFCAP_TSO6) + ifp->if_hwassist |= CSUM_IP6_TSO; + else + ifp->if_hwassist &= ~CSUM_IP6_TSO; } + NV_UNLOCK(sc); error = 0; break; case SIOCADDMULTI: @@ -1737,6 +1703,30 @@ hn_lro_hiwat_sysctl(SYSCTL_HANDLER_ARGS) #endif /* HN_LRO_HIWAT */ static int +hn_trust_hcsum_sysctl(SYSCTL_HANDLER_ARGS) +{ + struct hn_softc *sc = arg1; + int hcsum = arg2; + int on, error; + + on = 0; + if (sc->hn_trust_hcsum & hcsum) + on = 1; + + error = sysctl_handle_int(oidp, &on, 0, req); + if (error || req->newptr == NULL) + return error; + + NV_LOCK(sc); + if (on) + sc->hn_trust_hcsum |= hcsum; + else + sc->hn_trust_hcsum &= ~hcsum; + NV_UNLOCK(sc); + return 0; +} + +static int hn_tx_chimney_size_sysctl(SYSCTL_HANDLER_ARGS) { struct hn_softc *sc = arg1;
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