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Tsirkin" , Yan Vugenfirer , Yuri Benditovich , Sriram Yagnaraman , Alexander Bulekov , Akihiko Odaki Subject: [PATCH v4 21/28] hw/net/net_tx_pkt: Automatically determine if virtio-net header is used Date: Mon, 30 Jan 2023 22:47:08 +0900 Message-Id: <20230130134715.76604-22-akihiko.odaki@daynix.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230130134715.76604-1-akihiko.odaki@daynix.com> References: <20230130134715.76604-1-akihiko.odaki@daynix.com> MIME-Version: 1.0 Received-SPF: none client-ip=2607:f8b0:4864:20::102a; envelope-from=akihiko.odaki@daynix.com; helo=mail-pj1-x102a.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 autolearn=unavailable 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 The new function qemu_get_using_vnet_hdr() allows to automatically determine if virtio-net header is used. Signed-off-by: Akihiko Odaki --- hw/net/e1000e_core.c | 3 +-- hw/net/net_tx_pkt.c | 19 ++++++++++--------- hw/net/net_tx_pkt.h | 3 +-- hw/net/vmxnet3.c | 6 ++---- 4 files changed, 14 insertions(+), 17 deletions(-) diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c index 38d374fba3..954a007151 100644 --- a/hw/net/e1000e_core.c +++ b/hw/net/e1000e_core.c @@ -3376,8 +3376,7 @@ e1000e_core_pci_realize(E1000ECore *core, qemu_add_vm_change_state_handler(e1000e_vm_state_change, core); for (i = 0; i < E1000E_NUM_QUEUES; i++) { - net_tx_pkt_init(&core->tx[i].tx_pkt, core->owner, - E1000E_MAX_TX_FRAGS, core->has_vnet); + net_tx_pkt_init(&core->tx[i].tx_pkt, core->owner, E1000E_MAX_TX_FRAGS); } net_rx_pkt_init(&core->rx_pkt, core->has_vnet); diff --git a/hw/net/net_tx_pkt.c b/hw/net/net_tx_pkt.c index 8a23899a4d..cf46c8457f 100644 --- a/hw/net/net_tx_pkt.c +++ b/hw/net/net_tx_pkt.c @@ -35,7 +35,6 @@ struct NetTxPkt { PCIDevice *pci_dev; struct virtio_net_hdr virt_hdr; - bool has_virt_hdr; struct iovec *raw; uint32_t raw_frags; @@ -59,7 +58,7 @@ struct NetTxPkt { }; void net_tx_pkt_init(struct NetTxPkt **pkt, PCIDevice *pci_dev, - uint32_t max_frags, bool has_virt_hdr) + uint32_t max_frags) { struct NetTxPkt *p = g_malloc0(sizeof *p); @@ -71,10 +70,8 @@ void net_tx_pkt_init(struct NetTxPkt **pkt, PCIDevice *pci_dev, p->max_payload_frags = max_frags; p->max_raw_frags = max_frags; - p->has_virt_hdr = has_virt_hdr; p->vec[NET_TX_PKT_VHDR_FRAG].iov_base = &p->virt_hdr; - p->vec[NET_TX_PKT_VHDR_FRAG].iov_len = - p->has_virt_hdr ? sizeof p->virt_hdr : 0; + p->vec[NET_TX_PKT_VHDR_FRAG].iov_len = sizeof p->virt_hdr; p->vec[NET_TX_PKT_L2HDR_FRAG].iov_base = &p->l2_hdr; p->vec[NET_TX_PKT_L3HDR_FRAG].iov_base = &p->l3_hdr; @@ -617,9 +614,11 @@ static bool net_tx_pkt_do_sw_fragmentation(struct NetTxPkt *pkt, bool net_tx_pkt_send(struct NetTxPkt *pkt, NetClientState *nc) { + bool using_vnet_hdr = qemu_get_using_vnet_hdr(nc->peer); + assert(pkt); - if (!pkt->has_virt_hdr && + if (!using_vnet_hdr && pkt->virt_hdr.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) { net_tx_pkt_do_sw_csum(pkt); } @@ -636,11 +635,13 @@ bool net_tx_pkt_send(struct NetTxPkt *pkt, NetClientState *nc) } } - if (pkt->has_virt_hdr || + if (using_vnet_hdr || pkt->virt_hdr.gso_type == VIRTIO_NET_HDR_GSO_NONE) { + int index = using_vnet_hdr ? + NET_TX_PKT_VHDR_FRAG : NET_TX_PKT_L2HDR_FRAG; net_tx_pkt_fix_ip6_payload_len(pkt); - net_tx_pkt_sendv(pkt, nc, pkt->vec, - pkt->payload_frags + NET_TX_PKT_PL_START_FRAG); + net_tx_pkt_sendv(pkt, nc, pkt->vec + index, + pkt->payload_frags + NET_TX_PKT_PL_START_FRAG - index); return true; } diff --git a/hw/net/net_tx_pkt.h b/hw/net/net_tx_pkt.h index 2e38a5fa69..8d3faa42fb 100644 --- a/hw/net/net_tx_pkt.h +++ b/hw/net/net_tx_pkt.h @@ -32,10 +32,9 @@ struct NetTxPkt; * @pkt: packet pointer * @pci_dev: PCI device processing this packet * @max_frags: max tx ip fragments - * @has_virt_hdr: device uses virtio header. */ void net_tx_pkt_init(struct NetTxPkt **pkt, PCIDevice *pci_dev, - uint32_t max_frags, bool has_virt_hdr); + uint32_t max_frags); /** * Clean all tx packet resources. diff --git a/hw/net/vmxnet3.c b/hw/net/vmxnet3.c index c63bbb59bd..8c3f5d6e14 100644 --- a/hw/net/vmxnet3.c +++ b/hw/net/vmxnet3.c @@ -1521,8 +1521,7 @@ static void vmxnet3_activate_device(VMXNET3State *s) /* Preallocate TX packet wrapper */ VMW_CFPRN("Max TX fragments is %u", s->max_tx_frags); - net_tx_pkt_init(&s->tx_pkt, PCI_DEVICE(s), - s->max_tx_frags, s->peer_has_vhdr); + net_tx_pkt_init(&s->tx_pkt, PCI_DEVICE(s), s->max_tx_frags); net_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr); /* Read rings memory locations for RX queues */ @@ -2402,8 +2401,7 @@ static int vmxnet3_post_load(void *opaque, int version_id) { VMXNET3State *s = opaque; - net_tx_pkt_init(&s->tx_pkt, PCI_DEVICE(s), - s->max_tx_frags, s->peer_has_vhdr); + net_tx_pkt_init(&s->tx_pkt, PCI_DEVICE(s), s->max_tx_frags); net_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr); if (s->msix_used) {