From patchwork Thu May 23 14:34:49 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Michael S. Tsirkin" X-Patchwork-Id: 245963 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 405FC2C00AB for ; Fri, 24 May 2013 00:37:45 +1000 (EST) Received: from localhost ([::1]:56263 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UfWeF-0003KT-Dh for incoming@patchwork.ozlabs.org; Thu, 23 May 2013 10:37:43 -0400 Received: from eggs.gnu.org ([208.118.235.92]:56684) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UfWbC-0008Vh-P4 for qemu-devel@nongnu.org; Thu, 23 May 2013 10:34:40 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UfWb6-0006u3-6f for qemu-devel@nongnu.org; Thu, 23 May 2013 10:34:34 -0400 Received: from mx1.redhat.com ([209.132.183.28]:50929) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UfWb5-0006tf-S4 for qemu-devel@nongnu.org; Thu, 23 May 2013 10:34:28 -0400 Received: from int-mx02.intmail.prod.int.phx2.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r4NEYReL013314 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Thu, 23 May 2013 10:34:27 -0400 Received: from redhat.com (vpn-202-161.tlv.redhat.com [10.35.202.161]) by int-mx02.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with SMTP id r4NEYOt2010831 for ; Thu, 23 May 2013 10:34:25 -0400 Date: Thu, 23 May 2013 17:34:49 +0300 From: "Michael S. Tsirkin" To: qemu-devel@nongnu.org Message-ID: <1369319649-23900-4-git-send-email-mst@redhat.com> References: <1369319649-23900-1-git-send-email-mst@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1369319649-23900-1-git-send-email-mst@redhat.com> X-Mutt-Fcc: =sent X-Scanned-By: MIMEDefang 2.67 on 10.5.11.12 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 03/10] virtio-net, eth: use linux-headers X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 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 It's easier to keep everything virtio in sync if we just use headers exported from linux kernel. Import linux/virtio_net.h and linux/if_ether.h that it depends on. Switch to symbols from that header for stuff that was duplicated in tap.h and eth.h Signed-off-by: Michael S. Tsirkin --- include/hw/virtio/virtio-net.h | 138 +------------------------- include/net/eth.h | 5 +- include/net/tap.h | 24 +---- linux-headers/linux/if_ether.h | 140 +++++++++++++++++++++++++++ linux-headers/linux/virtio_net.h | 202 +++++++++++++++++++++++++++++++++++++++ 5 files changed, 346 insertions(+), 163 deletions(-) create mode 100644 linux-headers/linux/if_ether.h create mode 100644 linux-headers/linux/virtio_net.h diff --git a/include/hw/virtio/virtio-net.h b/include/hw/virtio/virtio-net.h index beeead7..807e190 100644 --- a/include/hw/virtio/virtio-net.h +++ b/include/hw/virtio/virtio-net.h @@ -16,44 +16,13 @@ #include "hw/virtio/virtio.h" #include "hw/pci/pci.h" +#include "linux/virtio_net.h" +#include "linux/virtio_ids.h" #define TYPE_VIRTIO_NET "virtio-net-device" #define VIRTIO_NET(obj) \ OBJECT_CHECK(VirtIONet, (obj), TYPE_VIRTIO_NET) -#define ETH_ALEN 6 - -/* from Linux's virtio_net.h */ - -/* The ID for virtio_net */ -#define VIRTIO_ID_NET 1 - -/* The feature bitmap for virtio net */ -#define VIRTIO_NET_F_CSUM 0 /* Host handles pkts w/ partial csum */ -#define VIRTIO_NET_F_GUEST_CSUM 1 /* Guest handles pkts w/ partial csum */ -#define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ -#define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */ -#define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ -#define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */ -#define VIRTIO_NET_F_GUEST_ECN 9 /* Guest can handle TSO[6] w/ ECN in. */ -#define VIRTIO_NET_F_GUEST_UFO 10 /* Guest can handle UFO in. */ -#define VIRTIO_NET_F_HOST_TSO4 11 /* Host can handle TSOv4 in. */ -#define VIRTIO_NET_F_HOST_TSO6 12 /* Host can handle TSOv6 in. */ -#define VIRTIO_NET_F_HOST_ECN 13 /* Host can handle TSO[6] w/ ECN in. */ -#define VIRTIO_NET_F_HOST_UFO 14 /* Host can handle UFO in. */ -#define VIRTIO_NET_F_MRG_RXBUF 15 /* Host can merge receive buffers. */ -#define VIRTIO_NET_F_STATUS 16 /* virtio_net_config.status available */ -#define VIRTIO_NET_F_CTRL_VQ 17 /* Control channel available */ -#define VIRTIO_NET_F_CTRL_RX 18 /* Control channel RX mode support */ -#define VIRTIO_NET_F_CTRL_VLAN 19 /* Control channel VLAN filtering */ -#define VIRTIO_NET_F_CTRL_RX_EXTRA 20 /* Extra RX mode control support */ -#define VIRTIO_NET_F_MQ 22 /* Device supports Receive Flow - * Steering */ - -#define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */ - -#define VIRTIO_NET_S_LINK_UP 1 /* Link is up */ - #define TX_TIMER_INTERVAL 150000 /* 150 us */ /* Limit the number of packets that can be sent via a single flush @@ -73,72 +42,6 @@ typedef struct virtio_net_conf /* Maximum packet size we can receive from tap device: header + 64k */ #define VIRTIO_NET_MAX_BUFSIZE (sizeof(struct virtio_net_hdr) + (64 << 10)) -struct virtio_net_config -{ - /* The config defining mac address ($ETH_ALEN bytes) */ - uint8_t mac[ETH_ALEN]; - /* See VIRTIO_NET_F_STATUS and VIRTIO_NET_S_* above */ - uint16_t status; - /* Max virtqueue pairs supported by the device */ - uint16_t max_virtqueue_pairs; -} QEMU_PACKED; - -/* - * Control virtqueue data structures - * - * The control virtqueue expects a header in the first sg entry - * and an ack/status response in the last entry. Data for the - * command goes in between. - */ -struct virtio_net_ctrl_hdr { - uint8_t class; - uint8_t cmd; -}; - -typedef uint8_t virtio_net_ctrl_ack; - -#define VIRTIO_NET_OK 0 -#define VIRTIO_NET_ERR 1 - -/* - * Control the RX mode, ie. promisucous, allmulti, etc... - * All commands require an "out" sg entry containing a 1 byte - * state value, zero = disable, non-zero = enable. Commands - * 0 and 1 are supported with the VIRTIO_NET_F_CTRL_RX feature. - * Commands 2-5 are added with VIRTIO_NET_F_CTRL_RX_EXTRA. - */ -#define VIRTIO_NET_CTRL_RX 0 - #define VIRTIO_NET_CTRL_RX_PROMISC 0 - #define VIRTIO_NET_CTRL_RX_ALLMULTI 1 - #define VIRTIO_NET_CTRL_RX_ALLUNI 2 - #define VIRTIO_NET_CTRL_RX_NOMULTI 3 - #define VIRTIO_NET_CTRL_RX_NOUNI 4 - #define VIRTIO_NET_CTRL_RX_NOBCAST 5 - -/* - * Control the MAC - * - * The MAC filter table is managed by the hypervisor, the guest should - * assume the size is infinite. Filtering should be considered - * non-perfect, ie. based on hypervisor resources, the guest may - * received packets from sources not specified in the filter list. - * - * In addition to the class/cmd header, the TABLE_SET command requires - * two out scatterlists. Each contains a 4 byte count of entries followed - * by a concatenated byte stream of the ETH_ALEN MAC addresses. The - * first sg list contains unicast addresses, the second is for multicast. - * This functionality is present if the VIRTIO_NET_F_CTRL_RX feature - * is available. - * - * The ADDR_SET command requests one out scatterlist, it contains a - * 6 bytes MAC address. This functionality is present if the - * VIRTIO_NET_F_CTRL_MAC_ADDR feature is available. - */ -struct virtio_net_ctrl_mac { - uint32_t entries; - uint8_t macs[][ETH_ALEN]; -}; - typedef struct VirtIONetQueue { VirtQueue *rx_vq; VirtQueue *tx_vq; @@ -192,43 +95,6 @@ typedef struct VirtIONet { char *netclient_type; } VirtIONet; -#define VIRTIO_NET_CTRL_MAC 1 - #define VIRTIO_NET_CTRL_MAC_TABLE_SET 0 - #define VIRTIO_NET_CTRL_MAC_ADDR_SET 1 - -/* - * Control VLAN filtering - * - * The VLAN filter table is controlled via a simple ADD/DEL interface. - * VLAN IDs not added may be filterd by the hypervisor. Del is the - * opposite of add. Both commands expect an out entry containing a 2 - * byte VLAN ID. VLAN filterting is available with the - * VIRTIO_NET_F_CTRL_VLAN feature bit. - */ -#define VIRTIO_NET_CTRL_VLAN 2 - #define VIRTIO_NET_CTRL_VLAN_ADD 0 - #define VIRTIO_NET_CTRL_VLAN_DEL 1 - -/* - * Control Multiqueue - * - * The command VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET - * enables multiqueue, specifying the number of the transmit and - * receive queues that will be used. After the command is consumed and acked by - * the device, the device will not steer new packets on receive virtqueues - * other than specified nor read from transmit virtqueues other than specified. - * Accordingly, driver should not transmit new packets on virtqueues other than - * specified. - */ -struct virtio_net_ctrl_mq { - uint16_t virtqueue_pairs; -}; - -#define VIRTIO_NET_CTRL_MQ 4 - #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET 0 - #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1 - #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000 - #define DEFINE_VIRTIO_NET_FEATURES(_state, _field) \ DEFINE_VIRTIO_COMMON_FEATURES(_state, _field), \ DEFINE_PROP_BIT("csum", _state, _field, VIRTIO_NET_F_CSUM, true), \ diff --git a/include/net/eth.h b/include/net/eth.h index 1d48e06..6102394 100644 --- a/include/net/eth.h +++ b/include/net/eth.h @@ -26,13 +26,12 @@ #ifndef QEMU_ETH_H #define QEMU_ETH_H +#include #include #include #include "qemu/bswap.h" #include "qemu/iov.h" -#define ETH_ALEN 6 - struct eth_header { uint8_t h_dest[ETH_ALEN]; /* destination eth addr */ uint8_t h_source[ETH_ALEN]; /* source ether addr */ @@ -170,8 +169,6 @@ struct tcp_hdr { #define IP_HEADER_VERSION(ip) \ ((ip->ip_ver_len >> 4)&0xf) -#define ETH_P_IP (0x0800) -#define ETH_P_IPV6 (0x86dd) #define ETH_P_VLAN (0x8100) #define ETH_P_DVLAN (0x88a8) #define VLAN_VID_MASK 0x0fff diff --git a/include/net/tap.h b/include/net/tap.h index a994f20..2eff653 100644 --- a/include/net/tap.h +++ b/include/net/tap.h @@ -28,6 +28,7 @@ #include "qemu-common.h" #include "qapi-types.h" +#include "linux/virtio_net.h" bool tap_has_ufo(NetClientState *nc); int tap_has_vnet_hdr(NetClientState *nc); @@ -43,27 +44,4 @@ int tap_get_fd(NetClientState *nc); struct vhost_net; struct vhost_net *tap_get_vhost_net(NetClientState *nc); -struct virtio_net_hdr -{ -#define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 // Use csum_start, csum_offset -#define VIRTIO_NET_HDR_F_DATA_VALID 2 // Csum is valid - uint8_t flags; -#define VIRTIO_NET_HDR_GSO_NONE 0 // Not a GSO frame -#define VIRTIO_NET_HDR_GSO_TCPV4 1 // GSO frame, IPv4 TCP (TSO) -#define VIRTIO_NET_HDR_GSO_UDP 3 // GSO frame, IPv4 UDP (UFO) -#define VIRTIO_NET_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP -#define VIRTIO_NET_HDR_GSO_ECN 0x80 // TCP has ECN set - uint8_t gso_type; - uint16_t hdr_len; - uint16_t gso_size; - uint16_t csum_start; - uint16_t csum_offset; -}; - -struct virtio_net_hdr_mrg_rxbuf -{ - struct virtio_net_hdr hdr; - uint16_t num_buffers; /* Number of merged rx buffers */ -}; - #endif /* QEMU_NET_TAP_H */ diff --git a/linux-headers/linux/if_ether.h b/linux-headers/linux/if_ether.h new file mode 100644 index 0000000..2fc760a --- /dev/null +++ b/linux-headers/linux/if_ether.h @@ -0,0 +1,140 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * Global definitions for the Ethernet IEEE 802.3 interface. + * + * Version: @(#)if_ether.h 1.0.1a 02/08/94 + * + * Author: Fred N. van Kempen, + * Donald Becker, + * Alan Cox, + * Steve Whitehouse, + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#ifndef _LINUX_IF_ETHER_H +#define _LINUX_IF_ETHER_H + +#include + +/* + * IEEE 802.3 Ethernet magic constants. The frame sizes omit the preamble + * and FCS/CRC (frame check sequence). + */ + +#define ETH_ALEN 6 /* Octets in one ethernet addr */ +#define ETH_HLEN 14 /* Total octets in header. */ +#define ETH_ZLEN 60 /* Min. octets in frame sans FCS */ +#define ETH_DATA_LEN 1500 /* Max. octets in payload */ +#define ETH_FRAME_LEN 1514 /* Max. octets in frame sans FCS */ +#define ETH_FCS_LEN 4 /* Octets in the FCS */ + +/* + * These are the defined Ethernet Protocol ID's. + */ + +#define ETH_P_LOOP 0x0060 /* Ethernet Loopback packet */ +#define ETH_P_PUP 0x0200 /* Xerox PUP packet */ +#define ETH_P_PUPAT 0x0201 /* Xerox PUP Addr Trans packet */ +#define ETH_P_IP 0x0800 /* Internet Protocol packet */ +#define ETH_P_X25 0x0805 /* CCITT X.25 */ +#define ETH_P_ARP 0x0806 /* Address Resolution packet */ +#define ETH_P_BPQ 0x08FF /* G8BPQ AX.25 Ethernet Packet [ NOT AN OFFICIALLY REGISTERED ID ] */ +#define ETH_P_IEEEPUP 0x0a00 /* Xerox IEEE802.3 PUP packet */ +#define ETH_P_IEEEPUPAT 0x0a01 /* Xerox IEEE802.3 PUP Addr Trans packet */ +#define ETH_P_BATMAN 0x4305 /* B.A.T.M.A.N.-Advanced packet [ NOT AN OFFICIALLY REGISTERED ID ] */ +#define ETH_P_DEC 0x6000 /* DEC Assigned proto */ +#define ETH_P_DNA_DL 0x6001 /* DEC DNA Dump/Load */ +#define ETH_P_DNA_RC 0x6002 /* DEC DNA Remote Console */ +#define ETH_P_DNA_RT 0x6003 /* DEC DNA Routing */ +#define ETH_P_LAT 0x6004 /* DEC LAT */ +#define ETH_P_DIAG 0x6005 /* DEC Diagnostics */ +#define ETH_P_CUST 0x6006 /* DEC Customer use */ +#define ETH_P_SCA 0x6007 /* DEC Systems Comms Arch */ +#define ETH_P_TEB 0x6558 /* Trans Ether Bridging */ +#define ETH_P_RARP 0x8035 /* Reverse Addr Res packet */ +#define ETH_P_ATALK 0x809B /* Appletalk DDP */ +#define ETH_P_AARP 0x80F3 /* Appletalk AARP */ +#define ETH_P_8021Q 0x8100 /* 802.1Q VLAN Extended Header */ +#define ETH_P_IPX 0x8137 /* IPX over DIX */ +#define ETH_P_IPV6 0x86DD /* IPv6 over bluebook */ +#define ETH_P_PAUSE 0x8808 /* IEEE Pause frames. See 802.3 31B */ +#define ETH_P_SLOW 0x8809 /* Slow Protocol. See 802.3ad 43B */ +#define ETH_P_WCCP 0x883E /* Web-cache coordination protocol + * defined in draft-wilson-wrec-wccp-v2-00.txt */ +#define ETH_P_PPP_DISC 0x8863 /* PPPoE discovery messages */ +#define ETH_P_PPP_SES 0x8864 /* PPPoE session messages */ +#define ETH_P_MPLS_UC 0x8847 /* MPLS Unicast traffic */ +#define ETH_P_MPLS_MC 0x8848 /* MPLS Multicast traffic */ +#define ETH_P_ATMMPOA 0x884c /* MultiProtocol Over ATM */ +#define ETH_P_LINK_CTL 0x886c /* HPNA, wlan link local tunnel */ +#define ETH_P_ATMFATE 0x8884 /* Frame-based ATM Transport + * over Ethernet + */ +#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */ +#define ETH_P_AOE 0x88A2 /* ATA over Ethernet */ +#define ETH_P_8021AD 0x88A8 /* 802.1ad Service VLAN */ +#define ETH_P_802_EX1 0x88B5 /* 802.1 Local Experimental 1. */ +#define ETH_P_TIPC 0x88CA /* TIPC */ +#define ETH_P_8021AH 0x88E7 /* 802.1ah Backbone Service Tag */ +#define ETH_P_MVRP 0x88F5 /* 802.1Q MVRP */ +#define ETH_P_1588 0x88F7 /* IEEE 1588 Timesync */ +#define ETH_P_FCOE 0x8906 /* Fibre Channel over Ethernet */ +#define ETH_P_TDLS 0x890D /* TDLS */ +#define ETH_P_FIP 0x8914 /* FCoE Initialization Protocol */ +#define ETH_P_QINQ1 0x9100 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */ +#define ETH_P_QINQ2 0x9200 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */ +#define ETH_P_QINQ3 0x9300 /* deprecated QinQ VLAN [ NOT AN OFFICIALLY REGISTERED ID ] */ +#define ETH_P_EDSA 0xDADA /* Ethertype DSA [ NOT AN OFFICIALLY REGISTERED ID ] */ +#define ETH_P_AF_IUCV 0xFBFB /* IBM af_iucv [ NOT AN OFFICIALLY REGISTERED ID ] */ + +#define ETH_P_802_3_MIN 0x0600 /* If the value in the ethernet type is less than this value + * then the frame is Ethernet II. Else it is 802.3 */ + +/* + * Non DIX types. Won't clash for 1500 types. + */ + +#define ETH_P_802_3 0x0001 /* Dummy type for 802.3 frames */ +#define ETH_P_AX25 0x0002 /* Dummy protocol id for AX.25 */ +#define ETH_P_ALL 0x0003 /* Every packet (be careful!!!) */ +#define ETH_P_802_2 0x0004 /* 802.2 frames */ +#define ETH_P_SNAP 0x0005 /* Internal only */ +#define ETH_P_DDCMP 0x0006 /* DEC DDCMP: Internal only */ +#define ETH_P_WAN_PPP 0x0007 /* Dummy type for WAN PPP frames*/ +#define ETH_P_PPP_MP 0x0008 /* Dummy type for PPP MP frames */ +#define ETH_P_LOCALTALK 0x0009 /* Localtalk pseudo type */ +#define ETH_P_CAN 0x000C /* CAN: Controller Area Network */ +#define ETH_P_CANFD 0x000D /* CANFD: CAN flexible data rate*/ +#define ETH_P_PPPTALK 0x0010 /* Dummy type for Atalk over PPP*/ +#define ETH_P_TR_802_2 0x0011 /* 802.2 frames */ +#define ETH_P_MOBITEX 0x0015 /* Mobitex (kaz@cafe.net) */ +#define ETH_P_CONTROL 0x0016 /* Card specific control frames */ +#define ETH_P_IRDA 0x0017 /* Linux-IrDA */ +#define ETH_P_ECONET 0x0018 /* Acorn Econet */ +#define ETH_P_HDLC 0x0019 /* HDLC frames */ +#define ETH_P_ARCNET 0x001A /* 1A for ArcNet :-) */ +#define ETH_P_DSA 0x001B /* Distributed Switch Arch. */ +#define ETH_P_TRAILER 0x001C /* Trailer switch tagging */ +#define ETH_P_PHONET 0x00F5 /* Nokia Phonet frames */ +#define ETH_P_IEEE802154 0x00F6 /* IEEE802.15.4 frame */ +#define ETH_P_CAIF 0x00F7 /* ST-Ericsson CAIF protocol */ + +/* + * This is an Ethernet frame header. + */ + +struct ethhdr { + unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ + unsigned char h_source[ETH_ALEN]; /* source ether addr */ + __be16 h_proto; /* packet type ID field */ +} __attribute__((packed)); + + +#endif /* _LINUX_IF_ETHER_H */ diff --git a/linux-headers/linux/virtio_net.h b/linux-headers/linux/virtio_net.h new file mode 100644 index 0000000..c520203 --- /dev/null +++ b/linux-headers/linux/virtio_net.h @@ -0,0 +1,202 @@ +#ifndef _LINUX_VIRTIO_NET_H +#define _LINUX_VIRTIO_NET_H +/* This header is BSD licensed so anyone can use the definitions to implement + * compatible drivers/servers. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of IBM nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. */ +#include +#include +#include +#include + +/* The feature bitmap for virtio net */ +#define VIRTIO_NET_F_CSUM 0 /* Host handles pkts w/ partial csum */ +#define VIRTIO_NET_F_GUEST_CSUM 1 /* Guest handles pkts w/ partial csum */ +#define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ +#define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */ +#define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ +#define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */ +#define VIRTIO_NET_F_GUEST_ECN 9 /* Guest can handle TSO[6] w/ ECN in. */ +#define VIRTIO_NET_F_GUEST_UFO 10 /* Guest can handle UFO in. */ +#define VIRTIO_NET_F_HOST_TSO4 11 /* Host can handle TSOv4 in. */ +#define VIRTIO_NET_F_HOST_TSO6 12 /* Host can handle TSOv6 in. */ +#define VIRTIO_NET_F_HOST_ECN 13 /* Host can handle TSO[6] w/ ECN in. */ +#define VIRTIO_NET_F_HOST_UFO 14 /* Host can handle UFO in. */ +#define VIRTIO_NET_F_MRG_RXBUF 15 /* Host can merge receive buffers. */ +#define VIRTIO_NET_F_STATUS 16 /* virtio_net_config.status available */ +#define VIRTIO_NET_F_CTRL_VQ 17 /* Control channel available */ +#define VIRTIO_NET_F_CTRL_RX 18 /* Control channel RX mode support */ +#define VIRTIO_NET_F_CTRL_VLAN 19 /* Control channel VLAN filtering */ +#define VIRTIO_NET_F_CTRL_RX_EXTRA 20 /* Extra RX mode control support */ +#define VIRTIO_NET_F_GUEST_ANNOUNCE 21 /* Guest can announce device on the + * network */ +#define VIRTIO_NET_F_MQ 22 /* Device supports Receive Flow + * Steering */ +#define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */ + +#define VIRTIO_NET_S_LINK_UP 1 /* Link is up */ +#define VIRTIO_NET_S_ANNOUNCE 2 /* Announcement is needed */ + +struct virtio_net_config { + /* The config defining mac address (if VIRTIO_NET_F_MAC) */ + __u8 mac[6]; + /* See VIRTIO_NET_F_STATUS and VIRTIO_NET_S_* above */ + __u16 status; + /* Maximum number of each of transmit and receive queues; + * see VIRTIO_NET_F_MQ and VIRTIO_NET_CTRL_MQ. + * Legal values are between 1 and 0x8000 + */ + __u16 max_virtqueue_pairs; +} __attribute__((packed)); + +/* This is the first element of the scatter-gather list. If you don't + * specify GSO or CSUM features, you can simply ignore the header. */ +struct virtio_net_hdr { +#define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 // Use csum_start, csum_offset +#define VIRTIO_NET_HDR_F_DATA_VALID 2 // Csum is valid + __u8 flags; +#define VIRTIO_NET_HDR_GSO_NONE 0 // Not a GSO frame +#define VIRTIO_NET_HDR_GSO_TCPV4 1 // GSO frame, IPv4 TCP (TSO) +#define VIRTIO_NET_HDR_GSO_UDP 3 // GSO frame, IPv4 UDP (UFO) +#define VIRTIO_NET_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP +#define VIRTIO_NET_HDR_GSO_ECN 0x80 // TCP has ECN set + __u8 gso_type; + __u16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ + __u16 gso_size; /* Bytes to append to hdr_len per frame */ + __u16 csum_start; /* Position to start checksumming from */ + __u16 csum_offset; /* Offset after that to place checksum */ +}; + +/* This is the version of the header to use when the MRG_RXBUF + * feature has been negotiated. */ +struct virtio_net_hdr_mrg_rxbuf { + struct virtio_net_hdr hdr; + __u16 num_buffers; /* Number of merged rx buffers */ +}; + +/* + * Control virtqueue data structures + * + * The control virtqueue expects a header in the first sg entry + * and an ack/status response in the last entry. Data for the + * command goes in between. + */ +struct virtio_net_ctrl_hdr { + __u8 class; + __u8 cmd; +} __attribute__((packed)); + +typedef __u8 virtio_net_ctrl_ack; + +#define VIRTIO_NET_OK 0 +#define VIRTIO_NET_ERR 1 + +/* + * Control the RX mode, ie. promisucous, allmulti, etc... + * All commands require an "out" sg entry containing a 1 byte + * state value, zero = disable, non-zero = enable. Commands + * 0 and 1 are supported with the VIRTIO_NET_F_CTRL_RX feature. + * Commands 2-5 are added with VIRTIO_NET_F_CTRL_RX_EXTRA. + */ +#define VIRTIO_NET_CTRL_RX 0 + #define VIRTIO_NET_CTRL_RX_PROMISC 0 + #define VIRTIO_NET_CTRL_RX_ALLMULTI 1 + #define VIRTIO_NET_CTRL_RX_ALLUNI 2 + #define VIRTIO_NET_CTRL_RX_NOMULTI 3 + #define VIRTIO_NET_CTRL_RX_NOUNI 4 + #define VIRTIO_NET_CTRL_RX_NOBCAST 5 + +/* + * Control the MAC + * + * The MAC filter table is managed by the hypervisor, the guest should + * assume the size is infinite. Filtering should be considered + * non-perfect, ie. based on hypervisor resources, the guest may + * received packets from sources not specified in the filter list. + * + * In addition to the class/cmd header, the TABLE_SET command requires + * two out scatterlists. Each contains a 4 byte count of entries followed + * by a concatenated byte stream of the ETH_ALEN MAC addresses. The + * first sg list contains unicast addresses, the second is for multicast. + * This functionality is present if the VIRTIO_NET_F_CTRL_RX feature + * is available. + * + * The ADDR_SET command requests one out scatterlist, it contains a + * 6 bytes MAC address. This functionality is present if the + * VIRTIO_NET_F_CTRL_MAC_ADDR feature is available. + */ +struct virtio_net_ctrl_mac { + __u32 entries; + __u8 macs[][ETH_ALEN]; +} __attribute__((packed)); + +#define VIRTIO_NET_CTRL_MAC 1 + #define VIRTIO_NET_CTRL_MAC_TABLE_SET 0 + #define VIRTIO_NET_CTRL_MAC_ADDR_SET 1 + +/* + * Control VLAN filtering + * + * The VLAN filter table is controlled via a simple ADD/DEL interface. + * VLAN IDs not added may be filterd by the hypervisor. Del is the + * opposite of add. Both commands expect an out entry containing a 2 + * byte VLAN ID. VLAN filterting is available with the + * VIRTIO_NET_F_CTRL_VLAN feature bit. + */ +#define VIRTIO_NET_CTRL_VLAN 2 + #define VIRTIO_NET_CTRL_VLAN_ADD 0 + #define VIRTIO_NET_CTRL_VLAN_DEL 1 + +/* + * Control link announce acknowledgement + * + * The command VIRTIO_NET_CTRL_ANNOUNCE_ACK is used to indicate that + * driver has recevied the notification; device would clear the + * VIRTIO_NET_S_ANNOUNCE bit in the status field after it receives + * this command. + */ +#define VIRTIO_NET_CTRL_ANNOUNCE 3 + #define VIRTIO_NET_CTRL_ANNOUNCE_ACK 0 + +/* + * Control Receive Flow Steering + * + * The command VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET + * enables Receive Flow Steering, specifying the number of the transmit and + * receive queues that will be used. After the command is consumed and acked by + * the device, the device will not steer new packets on receive virtqueues + * other than specified nor read from transmit virtqueues other than specified. + * Accordingly, driver should not transmit new packets on virtqueues other than + * specified. + */ +struct virtio_net_ctrl_mq { + __u16 virtqueue_pairs; +}; + +#define VIRTIO_NET_CTRL_MQ 4 + #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET 0 + #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1 + #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000 + +#endif /* _LINUX_VIRTIO_NET_H */