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Mon, 31 Jul 2023 15:32:41 -0700 (PDT) Received: from localhost.localdomain ([2a06:c701:46e5:f400:91e1:5f50:afab:4c79]) by smtp.gmail.com with ESMTPSA id x5-20020aa7dac5000000b005223c34259fsm5915088eds.57.2023.07.31.15.32.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 31 Jul 2023 15:32:41 -0700 (PDT) From: Yuri Benditovich To: eduardo@habkost.net, marcel.apfelbaum@gmail.com, philmd@linaro.org, wangyanan55@huawei.com, dmitry.fleytman@gmail.com, akihiko.odaki@daynix.com, jasowang@redhat.com, sriram.yagnaraman@est.tech, mst@redhat.com, sw@weilnetz.de, qemu-devel@nongnu.org Cc: yan@daynix.com Subject: [PATCH v2 4/4] virtio-net: Add support for USO features Date: Tue, 1 Aug 2023 01:31:48 +0300 Message-Id: <20230731223148.1002258-5-yuri.benditovich@daynix.com> X-Mailer: git-send-email 2.34.3 In-Reply-To: <20230731223148.1002258-1-yuri.benditovich@daynix.com> References: <20230731223148.1002258-1-yuri.benditovich@daynix.com> MIME-Version: 1.0 Received-SPF: none client-ip=2a00:1450:4864:20::536; envelope-from=yuri.benditovich@daynix.com; helo=mail-ed1-x536.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org USO features of virtio-net device depend on kernel ability to support them, for backward compatibility by default the features are disabled on 8.0 and earlier. Signed-off-by: Yuri Benditovich Signed-off-by: Andrew Melnychecnko --- hw/core/machine.c | 4 ++++ hw/net/virtio-net.c | 31 +++++++++++++++++++++++++++++-- 2 files changed, 33 insertions(+), 2 deletions(-) diff --git a/hw/core/machine.c b/hw/core/machine.c index f0d35c6401..a725e76738 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -38,10 +38,14 @@ #include "exec/confidential-guest-support.h" #include "hw/virtio/virtio.h" #include "hw/virtio/virtio-pci.h" +#include "hw/virtio/virtio-net.h" GlobalProperty hw_compat_8_0[] = { { "migration", "multifd-flush-after-each-section", "on"}, { TYPE_PCI_DEVICE, "x-pcie-ari-nextfn-1", "on" }, + { TYPE_VIRTIO_NET, "host_uso", "off"}, + { TYPE_VIRTIO_NET, "guest_uso4", "off"}, + { TYPE_VIRTIO_NET, "guest_uso6", "off"}, }; const size_t hw_compat_8_0_len = G_N_ELEMENTS(hw_compat_8_0); diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index d2311e7d6e..bd0ead94fe 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -659,6 +659,15 @@ static int peer_has_ufo(VirtIONet *n) return n->has_ufo; } +static int peer_has_uso(VirtIONet *n) +{ + if (!peer_has_vnet_hdr(n)) { + return 0; + } + + return qemu_has_uso(qemu_get_queue(n->nic)->peer); +} + static void virtio_net_set_mrg_rx_bufs(VirtIONet *n, int mergeable_rx_bufs, int version_1, int hash_report) { @@ -796,6 +805,10 @@ static uint64_t virtio_net_get_features(VirtIODevice *vdev, uint64_t features, virtio_clear_feature(&features, VIRTIO_NET_F_GUEST_TSO6); virtio_clear_feature(&features, VIRTIO_NET_F_GUEST_ECN); + virtio_clear_feature(&features, VIRTIO_NET_F_HOST_USO); + virtio_clear_feature(&features, VIRTIO_NET_F_GUEST_USO4); + virtio_clear_feature(&features, VIRTIO_NET_F_GUEST_USO6); + virtio_clear_feature(&features, VIRTIO_NET_F_HASH_REPORT); } @@ -804,6 +817,12 @@ static uint64_t virtio_net_get_features(VirtIODevice *vdev, uint64_t features, virtio_clear_feature(&features, VIRTIO_NET_F_HOST_UFO); } + if (!peer_has_uso(n)) { + virtio_clear_feature(&features, VIRTIO_NET_F_HOST_USO); + virtio_clear_feature(&features, VIRTIO_NET_F_GUEST_USO4); + virtio_clear_feature(&features, VIRTIO_NET_F_GUEST_USO6); + } + if (!get_vhost_net(nc->peer)) { return features; } @@ -864,14 +883,16 @@ static void virtio_net_apply_guest_offloads(VirtIONet *n) !!(n->curr_guest_offloads & (1ULL << VIRTIO_NET_F_GUEST_USO6))); } -static uint64_t virtio_net_guest_offloads_by_features(uint32_t features) +static uint64_t virtio_net_guest_offloads_by_features(uint64_t features) { static const uint64_t guest_offloads_mask = (1ULL << VIRTIO_NET_F_GUEST_CSUM) | (1ULL << VIRTIO_NET_F_GUEST_TSO4) | (1ULL << VIRTIO_NET_F_GUEST_TSO6) | (1ULL << VIRTIO_NET_F_GUEST_ECN) | - (1ULL << VIRTIO_NET_F_GUEST_UFO); + (1ULL << VIRTIO_NET_F_GUEST_UFO) | + (1ULL << VIRTIO_NET_F_GUEST_USO4) | + (1ULL << VIRTIO_NET_F_GUEST_USO6); return guest_offloads_mask & features; } @@ -3924,6 +3945,12 @@ static Property virtio_net_properties[] = { DEFINE_PROP_INT32("speed", VirtIONet, net_conf.speed, SPEED_UNKNOWN), DEFINE_PROP_STRING("duplex", VirtIONet, net_conf.duplex_str), DEFINE_PROP_BOOL("failover", VirtIONet, failover, false), + DEFINE_PROP_BIT64("guest_uso4", VirtIONet, host_features, + VIRTIO_NET_F_GUEST_USO4, true), + DEFINE_PROP_BIT64("guest_uso6", VirtIONet, host_features, + VIRTIO_NET_F_GUEST_USO6, true), + DEFINE_PROP_BIT64("host_uso", VirtIONet, host_features, + VIRTIO_NET_F_HOST_USO, true), DEFINE_PROP_END_OF_LIST(), };