From patchwork Fri Mar 10 09:35:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 1755076 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=Xmy731yk; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4PY1Hg6Z5sz1yWp for ; Fri, 10 Mar 2023 20:40:15 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1paZB2-0004JC-Kr; Fri, 10 Mar 2023 04:36:40 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1paZB1-00047h-0K for qemu-devel@nongnu.org; Fri, 10 Mar 2023 04:36:39 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1paZAy-0008P9-W5 for qemu-devel@nongnu.org; Fri, 10 Mar 2023 04:36:38 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1678440996; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=o8xSggReEU/nw1c3lruKlg4un0UjiQ6zg6cco5vYTHI=; b=Xmy731ykeGUWkONkbHtMJa3Evhh5aEv6Du7Em8AIwvlsiAvJh/OHu4QYi3Uenfx+94T76F jOdXFxqNkHRe/tiZ/p086TH76+OjxD0+Ga4VKU3z1iakyBh42VUiBYcDAj47biaQRFbxKs hRJ5hbq//FWz96uvdY6e2GjkePKnaGU= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-596-NPi0AYteO0GzbcFTCUQNAQ-1; Fri, 10 Mar 2023 04:36:33 -0500 X-MC-Unique: NPi0AYteO0GzbcFTCUQNAQ-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 170AF85CCE7; Fri, 10 Mar 2023 09:36:33 +0000 (UTC) Received: from localhost.localdomain (ovpn-12-41.pek2.redhat.com [10.72.12.41]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2E23640BC781; Fri, 10 Mar 2023 09:36:30 +0000 (UTC) From: Jason Wang To: qemu-devel@nongnu.org, peter.maydell@linaro.org Cc: Akihiko Odaki , Jason Wang Subject: [PULL V2 23/44] hw/net/net_rx_pkt: Remove net_rx_pkt_has_virt_hdr Date: Fri, 10 Mar 2023 17:35:05 +0800 Message-Id: <20230310093526.30828-24-jasowang@redhat.com> In-Reply-To: <20230310093526.30828-1-jasowang@redhat.com> References: <20230310093526.30828-1-jasowang@redhat.com> MIME-Version: 1.0 Content-type: text/plain X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.133.124; envelope-from=jasowang@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 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 From: Akihiko Odaki When virtio-net header is not set, net_rx_pkt_get_vhdr() returns zero-filled virtio_net_hdr, which is actually valid. In fact, tap device uses zero-filled virtio_net_hdr when virtio-net header is not provided by the peer. Therefore, we can just remove net_rx_pkt_has_virt_hdr() and always assume NetTxPkt has a valid virtio-net header. Signed-off-by: Akihiko Odaki Signed-off-by: Jason Wang --- hw/net/e1000e_core.c | 16 ++++------------ hw/net/net_rx_pkt.c | 11 +---------- hw/net/net_rx_pkt.h | 12 +----------- hw/net/trace-events | 1 - hw/net/virtio-net.c | 2 +- hw/net/vmxnet3.c | 12 ++---------- 6 files changed, 9 insertions(+), 45 deletions(-) diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c index 954a007..95245c4 100644 --- a/hw/net/e1000e_core.c +++ b/hw/net/e1000e_core.c @@ -1240,12 +1240,6 @@ e1000e_build_rx_metadata(E1000ECore *core, goto func_exit; } - if (!net_rx_pkt_has_virt_hdr(pkt)) { - trace_e1000e_rx_metadata_no_virthdr(); - e1000e_verify_csum_in_sw(core, pkt, status_flags, istcp, isudp); - goto func_exit; - } - vhdr = net_rx_pkt_get_vhdr(pkt); if (!(vhdr->flags & VIRTIO_NET_HDR_F_DATA_VALID) && @@ -1671,12 +1665,10 @@ e1000e_write_packet_to_guest(E1000ECore *core, struct NetRxPkt *pkt, static inline void e1000e_rx_fix_l4_csum(E1000ECore *core, struct NetRxPkt *pkt) { - if (net_rx_pkt_has_virt_hdr(pkt)) { - struct virtio_net_hdr *vhdr = net_rx_pkt_get_vhdr(pkt); + struct virtio_net_hdr *vhdr = net_rx_pkt_get_vhdr(pkt); - if (vhdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) { - net_rx_pkt_fix_l4_csum(pkt); - } + if (vhdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) { + net_rx_pkt_fix_l4_csum(pkt); } } @@ -3379,7 +3371,7 @@ e1000e_core_pci_realize(E1000ECore *core, 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); + net_rx_pkt_init(&core->rx_pkt); e1000x_core_prepare_eeprom(core->eeprom, eeprom_templ, diff --git a/hw/net/net_rx_pkt.c b/hw/net/net_rx_pkt.c index 1e1c504..b309c2f 100644 --- a/hw/net/net_rx_pkt.c +++ b/hw/net/net_rx_pkt.c @@ -30,7 +30,6 @@ struct NetRxPkt { uint32_t tot_len; uint16_t tci; size_t ehdr_buf_len; - bool has_virt_hdr; eth_pkt_types_e packet_type; /* Analysis results */ @@ -48,10 +47,9 @@ struct NetRxPkt { eth_l4_hdr_info l4hdr_info; }; -void net_rx_pkt_init(struct NetRxPkt **pkt, bool has_virt_hdr) +void net_rx_pkt_init(struct NetRxPkt **pkt) { struct NetRxPkt *p = g_malloc0(sizeof *p); - p->has_virt_hdr = has_virt_hdr; p->vec = NULL; p->vec_len_total = 0; *pkt = p; @@ -472,13 +470,6 @@ bool net_rx_pkt_is_vlan_stripped(struct NetRxPkt *pkt) return pkt->ehdr_buf_len ? true : false; } -bool net_rx_pkt_has_virt_hdr(struct NetRxPkt *pkt) -{ - assert(pkt); - - return pkt->has_virt_hdr; -} - uint16_t net_rx_pkt_get_vlan_tag(struct NetRxPkt *pkt) { assert(pkt); diff --git a/hw/net/net_rx_pkt.h b/hw/net/net_rx_pkt.h index 048e346..7277907 100644 --- a/hw/net/net_rx_pkt.h +++ b/hw/net/net_rx_pkt.h @@ -37,10 +37,9 @@ void net_rx_pkt_uninit(struct NetRxPkt *pkt); * Init function for rx packet functionality * * @pkt: packet pointer - * @has_virt_hdr: device uses virtio header * */ -void net_rx_pkt_init(struct NetRxPkt **pkt, bool has_virt_hdr); +void net_rx_pkt_init(struct NetRxPkt **pkt); /** * returns total length of data attached to rx context @@ -215,15 +214,6 @@ uint16_t net_rx_pkt_get_vlan_tag(struct NetRxPkt *pkt); bool net_rx_pkt_is_vlan_stripped(struct NetRxPkt *pkt); /** - * notifies caller if the packet has virtio header - * - * @pkt: packet - * @ret: true if packet has virtio header, false otherwize - * - */ -bool net_rx_pkt_has_virt_hdr(struct NetRxPkt *pkt); - -/** * attach scatter-gather data to rx packet * * @pkt: packet diff --git a/hw/net/trace-events b/hw/net/trace-events index c98ad12..f7257a0 100644 --- a/hw/net/trace-events +++ b/hw/net/trace-events @@ -188,7 +188,6 @@ e1000e_rx_metadata_rss(uint32_t rss, uint32_t mrq) "RSS data: rss: 0x%X, mrq: 0x e1000e_rx_metadata_ip_id(uint16_t ip_id) "the IPv4 ID is 0x%X" e1000e_rx_metadata_ack(void) "the packet is TCP ACK" e1000e_rx_metadata_pkt_type(uint32_t pkt_type) "the packet type is %u" -e1000e_rx_metadata_no_virthdr(void) "the packet has no virt-header" e1000e_rx_metadata_virthdr_no_csum_info(void) "virt-header does not contain checksum info" e1000e_rx_metadata_l3_cso_disabled(void) "IP4 CSO is disabled" e1000e_rx_metadata_l4_cso_disabled(void) "TCP/UDP CSO is disabled" diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 09d5c7a..dda7da2 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -3718,7 +3718,7 @@ static void virtio_net_device_realize(DeviceState *dev, Error **errp) QTAILQ_INIT(&n->rsc_chains); n->qdev = dev; - net_rx_pkt_init(&n->rx_pkt, false); + net_rx_pkt_init(&n->rx_pkt); if (virtio_has_feature(n->host_features, VIRTIO_NET_F_RSS)) { virtio_net_load_ebpf(n); diff --git a/hw/net/vmxnet3.c b/hw/net/vmxnet3.c index eab8fa4..6c6bb2a 100644 --- a/hw/net/vmxnet3.c +++ b/hw/net/vmxnet3.c @@ -851,10 +851,6 @@ static void vmxnet3_rx_need_csum_calculate(struct NetRxPkt *pkt, uint8_t *data; int len; - if (!net_rx_pkt_has_virt_hdr(pkt)) { - return; - } - vhdr = net_rx_pkt_get_vhdr(pkt); if (!VMXNET_FLAG_IS_SET(vhdr->flags, VIRTIO_NET_HDR_F_NEEDS_CSUM)) { return; @@ -898,10 +894,6 @@ static void vmxnet3_rx_update_descr(struct NetRxPkt *pkt, rxcd->tci = net_rx_pkt_get_vlan_tag(pkt); } - if (!net_rx_pkt_has_virt_hdr(pkt)) { - goto nocsum; - } - vhdr = net_rx_pkt_get_vhdr(pkt); /* * Checksum is valid when lower level tell so or when lower level @@ -1522,7 +1514,7 @@ 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); - net_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr); + net_rx_pkt_init(&s->rx_pkt); /* Read rings memory locations for RX queues */ for (i = 0; i < s->rxq_num; i++) { @@ -2402,7 +2394,7 @@ 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); - net_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr); + net_rx_pkt_init(&s->rx_pkt); if (s->msix_used) { vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS);