Common definitions for VMWARE devices (75020a70) · Commits · SUMMER2020 / students / proj-2021291

hw/vmware_utils.h

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		/*
		* QEMU VMWARE paravirtual devices - auxiliary code
		*
		* Copyright (c) 2012 Ravello Systems LTD (http://ravellosystems.com)
		*
		* Developed by Daynix Computing LTD (http://www.daynix.com)
		*
		* Authors:
		* Dmitry Fleytman <dmitry@daynix.com>
		* Yan Vugenfirer <yan@daynix.com>
		*
		* This work is licensed under the terms of the GNU GPL, version 2 or later.
		* See the COPYING file in the top-level directory.
		*
		*/

		#ifndef VMWARE_UTILS_H
		#define VMWARE_UTILS_H

		#include "qemu/range.h"

		#ifndef VMW_SHPRN
		#define VMW_SHPRN(fmt, ...) do {} while (0)
		#endif

		/*
		* Shared memory access functions with byte swap support
		* Each function contains printout for reverse-engineering needs
		*
		*/
		static inline void
		vmw_shmem_read(hwaddr addr, void *buf, int len)
		{
		VMW_SHPRN("SHMEM r: %" PRIx64 ", len: %d to %p", addr, len, buf);
		cpu_physical_memory_read(addr, buf, len);
		}

		static inline void
		vmw_shmem_write(hwaddr addr, void *buf, int len)
		{
		VMW_SHPRN("SHMEM w: %" PRIx64 ", len: %d to %p", addr, len, buf);
		cpu_physical_memory_write(addr, buf, len);
		}

		static inline void
		vmw_shmem_rw(hwaddr addr, void *buf, int len, int is_write)
		{
		VMW_SHPRN("SHMEM r/w: %" PRIx64 ", len: %d (to %p), is write: %d",
		addr, len, buf, is_write);

		cpu_physical_memory_rw(addr, buf, len, is_write);
		}

		static inline void
		vmw_shmem_set(hwaddr addr, uint8 val, int len)
		{
		int i;
		VMW_SHPRN("SHMEM set: %" PRIx64 ", len: %d (value 0x%X)", addr, len, val);

		for (i = 0; i < len; i++) {
		cpu_physical_memory_write(addr + i, &val, 1);
		}
		}

		static inline uint32_t
		vmw_shmem_ld8(hwaddr addr)
		{
		uint8_t res = ldub_phys(addr);
		VMW_SHPRN("SHMEM load8: %" PRIx64 " (value 0x%X)", addr, res);
		return res;
		}

		static inline void
		vmw_shmem_st8(hwaddr addr, uint8_t value)
		{
		VMW_SHPRN("SHMEM store8: %" PRIx64 " (value 0x%X)", addr, value);
		stb_phys(addr, value);
		}

		static inline uint32_t
		vmw_shmem_ld16(hwaddr addr)
		{
		uint16_t res = lduw_le_phys(addr);
		VMW_SHPRN("SHMEM load16: %" PRIx64 " (value 0x%X)", addr, res);
		return res;
		}

		static inline void
		vmw_shmem_st16(hwaddr addr, uint16_t value)
		{
		VMW_SHPRN("SHMEM store16: %" PRIx64 " (value 0x%X)", addr, value);
		stw_le_phys(addr, value);
		}

		static inline uint32_t
		vmw_shmem_ld32(hwaddr addr)
		{
		uint32_t res = ldl_le_phys(addr);
		VMW_SHPRN("SHMEM load32: %" PRIx64 " (value 0x%X)", addr, res);
		return res;
		}

		static inline void
		vmw_shmem_st32(hwaddr addr, uint32_t value)
		{
		VMW_SHPRN("SHMEM store32: %" PRIx64 " (value 0x%X)", addr, value);
		stl_le_phys(addr, value);
		}

		static inline uint64_t
		vmw_shmem_ld64(hwaddr addr)
		{
		uint64_t res = ldq_le_phys(addr);
		VMW_SHPRN("SHMEM load64: %" PRIx64 " (value %" PRIx64 ")", addr, res);
		return res;
		}

		static inline void
		vmw_shmem_st64(hwaddr addr, uint64_t value)
		{
		VMW_SHPRN("SHMEM store64: %" PRIx64 " (value %" PRIx64 ")", addr, value);
		stq_le_phys(addr, value);
		}

		/* Macros for simplification of operations on array-style registers */

		/*
		* Whether <addr> lies inside of array-style register defined by <base>,
		* number of elements (<cnt>) and element size (<regsize>)
		*
		*/
		#define VMW_IS_MULTIREG_ADDR(addr, base, cnt, regsize) \
		range_covers_byte(base, cnt * regsize, addr)

		/*
		* Returns index of given register (<addr>) in array-style register defined by
		* <base> and element size (<regsize>)
		*
		*/
		#define VMW_MULTIREG_IDX_BY_ADDR(addr, base, regsize) \
		(((addr) - (base)) / (regsize))

		#endif

hw/vmxnet_debug.h

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		/*
		* QEMU VMWARE VMXNET* paravirtual NICs - debugging facilities
		*
		* Copyright (c) 2012 Ravello Systems LTD (http://ravellosystems.com)
		*
		* Developed by Daynix Computing LTD (http://www.daynix.com)
		*
		* Authors:
		* Dmitry Fleytman <dmitry@daynix.com>
		* Tamir Shomer <tamirs@daynix.com>
		* Yan Vugenfirer <yan@daynix.com>
		*
		* This work is licensed under the terms of the GNU GPL, version 2 or later.
		* See the COPYING file in the top-level directory.
		*
		*/

		#ifndef _QEMU_VMXNET_DEBUG_H
		#define _QEMU_VMXNET_DEBUG_H

		#define VMXNET_DEVICE_NAME "vmxnet3"

		/* #define VMXNET_DEBUG_CB */
		#define VMXNET_DEBUG_WARNINGS
		#define VMXNET_DEBUG_ERRORS
		/* #define VMXNET_DEBUG_INTERRUPTS */
		/* #define VMXNET_DEBUG_CONFIG */
		/* #define VMXNET_DEBUG_RINGS */
		/* #define VMXNET_DEBUG_PACKETS */
		/* #define VMXNET_DEBUG_SHMEM_ACCESS */

		#ifdef VMXNET_DEBUG_SHMEM_ACCESS
		#define VMW_SHPRN(fmt, ...) \
		do { \
		printf("[%s][SH][%s]: " fmt "\n", VMXNET_DEVICE_NAME, __func__, \
		## __VA_ARGS__); \
		} while (0)
		#else
		#define VMW_SHPRN(fmt, ...) do {} while (0)
		#endif

		#ifdef VMXNET_DEBUG_CB
		#define VMW_CBPRN(fmt, ...) \
		do { \
		printf("[%s][CB][%s]: " fmt "\n", VMXNET_DEVICE_NAME, __func__, \
		## __VA_ARGS__); \
		} while (0)
		#else
		#define VMW_CBPRN(fmt, ...) do {} while (0)
		#endif

		#ifdef VMXNET_DEBUG_PACKETS
		#define VMW_PKPRN(fmt, ...) \
		do { \
		printf("[%s][PK][%s]: " fmt "\n", VMXNET_DEVICE_NAME, __func__, \
		## __VA_ARGS__); \
		} while (0)
		#else
		#define VMW_PKPRN(fmt, ...) do {} while (0)
		#endif

		#ifdef VMXNET_DEBUG_WARNINGS
		#define VMW_WRPRN(fmt, ...) \
		do { \
		printf("[%s][WR][%s]: " fmt "\n", VMXNET_DEVICE_NAME, __func__, \
		## __VA_ARGS__); \
		} while (0)
		#else
		#define VMW_WRPRN(fmt, ...) do {} while (0)
		#endif

		#ifdef VMXNET_DEBUG_ERRORS
		#define VMW_ERPRN(fmt, ...) \
		do { \
		printf("[%s][ER][%s]: " fmt "\n", VMXNET_DEVICE_NAME, __func__, \
		## __VA_ARGS__); \
		} while (0)
		#else
		#define VMW_ERPRN(fmt, ...) do {} while (0)
		#endif

		#ifdef VMXNET_DEBUG_INTERRUPTS
		#define VMW_IRPRN(fmt, ...) \
		do { \
		printf("[%s][IR][%s]: " fmt "\n", VMXNET_DEVICE_NAME, __func__, \
		## __VA_ARGS__); \
		} while (0)
		#else
		#define VMW_IRPRN(fmt, ...) do {} while (0)
		#endif

		#ifdef VMXNET_DEBUG_CONFIG
		#define VMW_CFPRN(fmt, ...) \
		do { \
		printf("[%s][CF][%s]: " fmt "\n", VMXNET_DEVICE_NAME, __func__, \
		## __VA_ARGS__); \
		} while (0)
		#else
		#define VMW_CFPRN(fmt, ...) do {} while (0)
		#endif

		#ifdef VMXNET_DEBUG_RINGS
		#define VMW_RIPRN(fmt, ...) \
		do { \
		printf("[%s][RI][%s]: " fmt "\n", VMXNET_DEVICE_NAME, __func__, \
		## __VA_ARGS__); \
		} while (0)
		#else
		#define VMW_RIPRN(fmt, ...) do {} while (0)
		#endif

		#define VMXNET_MF "%02X:%02X:%02X:%02X:%02X:%02X"
		#define VMXNET_MA(a) (a)[0], (a)[1], (a)[2], (a)[3], (a)[4], (a)[5]

		#endif /* _QEMU_VMXNET3_DEBUG_H */

include/net/eth.h

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		/*
		* QEMU network structures definitions and helper functions
		*
		* Copyright (c) 2012 Ravello Systems LTD (http://ravellosystems.com)
		*
		* Developed by Daynix Computing LTD (http://www.daynix.com)
		*
		* Portions developed by Free Software Foundation, Inc
		* Copyright (C) 1991-1997, 2001, 2003, 2006 Free Software Foundation, Inc.
		* See netinet/ip6.h and netinet/in.h (GNU C Library)
		*
		* Portions developed by Igor Kovalenko
		* Copyright (c) 2006 Igor Kovalenko
		* See hw/rtl8139.c (QEMU)
		*
		* Authors:
		* Dmitry Fleytman <dmitry@daynix.com>
		* Tamir Shomer <tamirs@daynix.com>
		* Yan Vugenfirer <yan@daynix.com>
		*
		* This work is licensed under the terms of the GNU GPL, version 2 or later.
		* See the COPYING file in the top-level directory.
		*
		*/

		#ifndef QEMU_ETH_H
		#define QEMU_ETH_H

		#include <sys/types.h>
		#include <string.h>
		#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 */
		uint16_t h_proto; /* packet type ID field */
		};

		struct vlan_header {
		uint16_t h_tci; /* priority and VLAN ID */
		uint16_t h_proto; /* encapsulated protocol */
		};

		struct ip_header {
		uint8_t ip_ver_len; /* version and header length */
		uint8_t ip_tos; /* type of service */
		uint16_t ip_len; /* total length */
		uint16_t ip_id; /* identification */
		uint16_t ip_off; /* fragment offset field */
		uint8_t ip_ttl; /* time to live */
		uint8_t ip_p; /* protocol */
		uint16_t ip_sum; /* checksum */
		uint32_t ip_src, ip_dst; /* source and destination address */
		};

		typedef struct tcp_header {
		uint16_t th_sport; /* source port */
		uint16_t th_dport; /* destination port */
		uint32_t th_seq; /* sequence number */
		uint32_t th_ack; /* acknowledgment number */
		uint16_t th_offset_flags; /* data offset, reserved 6 bits, */
		/* TCP protocol flags */
		uint16_t th_win; /* window */
		uint16_t th_sum; /* checksum */
		uint16_t th_urp; /* urgent pointer */
		} tcp_header;

		typedef struct udp_header {
		uint16_t uh_sport; /* source port */
		uint16_t uh_dport; /* destination port */
		uint16_t uh_ulen; /* udp length */
		uint16_t uh_sum; /* udp checksum */
		} udp_header;

		typedef struct ip_pseudo_header {
		uint32_t ip_src;
		uint32_t ip_dst;
		uint8_t zeros;
		uint8_t ip_proto;
		uint16_t ip_payload;
		} ip_pseudo_header;

		/* IPv6 address */
		struct in6_addr {
		union {
		uint8_t __u6_addr8[16];
		} __in6_u;
		};

		struct ip6_header {
		union {
		struct ip6_hdrctl {
		uint32_t ip6_un1_flow; /* 4 bits version, 8 bits TC,
		20 bits flow-ID */
		uint16_t ip6_un1_plen; /* payload length */
		uint8_t ip6_un1_nxt; /* next header */
		uint8_t ip6_un1_hlim; /* hop limit */
		} ip6_un1;
		uint8_t ip6_un2_vfc; /* 4 bits version, top 4 bits tclass */
		struct ip6_ecn_access {
		uint8_t ip6_un3_vfc; /* 4 bits version, top 4 bits tclass */
		uint8_t ip6_un3_ecn; /* 2 bits ECN, top 6 bits payload length */
		} ip6_un3;
		} ip6_ctlun;
		struct in6_addr ip6_src; /* source address */
		struct in6_addr ip6_dst; /* destination address */
		};

		struct ip6_ext_hdr {
		uint8_t ip6r_nxt; /* next header */
		uint8_t ip6r_len; /* length in units of 8 octets */
		};

		struct udp_hdr {
		uint16_t uh_sport; /* source port */
		uint16_t uh_dport; /* destination port */
		uint16_t uh_ulen; /* udp length */
		uint16_t uh_sum; /* udp checksum */
		};

		struct tcp_hdr {
		u_short th_sport; /* source port */
		u_short th_dport; /* destination port */
		uint32_t th_seq; /* sequence number */
		uint32_t th_ack; /* acknowledgment number */
		#ifdef HOST_WORDS_BIGENDIAN
		u_char th_off : 4, /* data offset */
		th_x2:4; /* (unused) */
		#else
		u_char th_x2 : 4, /* (unused) */
		th_off:4; /* data offset */
		#endif

		#define TH_ELN 0x1 /* explicit loss notification */
		#define TH_ECN 0x2 /* explicit congestion notification */
		#define TH_FS 0x4 /* fast start */

		u_char th_flags;
		#define TH_FIN 0x01
		#define TH_SYN 0x02
		#define TH_RST 0x04
		#define TH_PUSH 0x08
		#define TH_ACK 0x10
		#define TH_URG 0x20
		u_short th_win; /* window */
		u_short th_sum; /* checksum */
		u_short th_urp; /* urgent pointer */
		};

		#define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt
		#define ip6_ecn_acc ip6_ctlun.ip6_un3.ip6_un3_ecn

		#define PKT_GET_ETH_HDR(p) \
		((struct eth_header *)(p))
		#define PKT_GET_VLAN_HDR(p) \
		((struct vlan_header ) (((uint8_t )(p)) + sizeof(struct eth_header)))
		#define PKT_GET_DVLAN_HDR(p) \
		(PKT_GET_VLAN_HDR(p) + 1)
		#define PKT_GET_IP_HDR(p) \
		((struct ip_header )(((uint8_t )(p)) + eth_get_l2_hdr_length(p)))
		#define IP_HDR_GET_LEN(p) \
		((((struct ip_header *)p)->ip_ver_len & 0x0F) << 2)
		#define PKT_GET_IP_HDR_LEN(p) \
		(IP_HDR_GET_LEN(PKT_GET_IP_HDR(p)))
		#define PKT_GET_IP6_HDR(p) \
		((struct ip6_header ) (((uint8_t )(p)) + eth_get_l2_hdr_length(p)))
		#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
		#define IP_HEADER_VERSION_4 (4)
		#define IP_HEADER_VERSION_6 (6)
		#define IP_PROTO_TCP (6)
		#define IP_PROTO_UDP (17)
		#define IPTOS_ECN_MASK 0x03
		#define IPTOS_ECN(x) ((x) & IPTOS_ECN_MASK)
		#define IPTOS_ECN_CE 0x03
		#define IP6_ECN_MASK 0xC0
		#define IP6_ECN(x) ((x) & IP6_ECN_MASK)
		#define IP6_ECN_CE 0xC0
		#define IP4_DONT_FRAGMENT_FLAG (1 << 14)

		#define IS_SPECIAL_VLAN_ID(x) \
		(((x) == 0) \|\| ((x) == 0xFFF))

		#define ETH_MAX_L2_HDR_LEN \
		(sizeof(struct eth_header) + 2 * sizeof(struct vlan_header))

		#define ETH_MAX_IP4_HDR_LEN (60)
		#define ETH_MAX_IP_DGRAM_LEN (0xFFFF)

		#define IP_FRAG_UNIT_SIZE (8)
		#define IP_FRAG_ALIGN_SIZE(x) ((x) & ~0x7)
		#define IP_RF 0x8000 /* reserved fragment flag */
		#define IP_DF 0x4000 /* don't fragment flag */
		#define IP_MF 0x2000 /* more fragments flag */
		#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */

		#define IP6_EXT_GRANULARITY (8) /* Size granularity for
		IPv6 extension headers */

		/* IP6 extension header types */
		#define IP6_HOP_BY_HOP (0)
		#define IP6_ROUTING (43)
		#define IP6_FRAGMENT (44)
		#define IP6_ESP (50)
		#define IP6_AUTHENTICATION (51)
		#define IP6_NONE (59)
		#define IP6_DESTINATON (60)
		#define IP6_MOBILITY (135)

		static inline int is_multicast_ether_addr(const uint8_t *addr)
		{
		return 0x01 & addr[0];
		}

		static inline int is_broadcast_ether_addr(const uint8_t *addr)
		{
		return (addr[0] & addr[1] & addr[2] & addr[3] & addr[4] & addr[5]) == 0xff;
		}

		static inline int is_unicast_ether_addr(const uint8_t *addr)
		{
		return !is_multicast_ether_addr(addr);
		}

		typedef enum {
		ETH_PKT_UCAST = 0xAABBCC00,
		ETH_PKT_BCAST,
		ETH_PKT_MCAST
		} eth_pkt_types_e;

		static inline eth_pkt_types_e
		get_eth_packet_type(const struct eth_header *ehdr)
		{
		if (is_broadcast_ether_addr(ehdr->h_dest)) {
		return ETH_PKT_BCAST;
		} else if (is_multicast_ether_addr(ehdr->h_dest)) {
		return ETH_PKT_MCAST;
		} else { /* unicast */
		return ETH_PKT_UCAST;
		}
		}

		static inline uint32_t
		eth_get_l2_hdr_length(const void *p)
		{
		uint16_t proto = be16_to_cpu(PKT_GET_ETH_HDR(p)->h_proto);
		struct vlan_header *hvlan = PKT_GET_VLAN_HDR(p);
		switch (proto) {
		case ETH_P_VLAN:
		return sizeof(struct eth_header) + sizeof(struct vlan_header);
		case ETH_P_DVLAN:
		if (hvlan->h_proto == ETH_P_VLAN) {
		return sizeof(struct eth_header) + 2 * sizeof(struct vlan_header);
		} else {
		return sizeof(struct eth_header) + sizeof(struct vlan_header);
		}
		default:
		return sizeof(struct eth_header);
		}
		}

		static inline uint16_t
		eth_get_pkt_tci(const void *p)
		{
		uint16_t proto = be16_to_cpu(PKT_GET_ETH_HDR(p)->h_proto);
		struct vlan_header *hvlan = PKT_GET_VLAN_HDR(p);
		switch (proto) {
		case ETH_P_VLAN:
		case ETH_P_DVLAN:
		return be16_to_cpu(hvlan->h_tci);
		default:
		return 0;
		}
		}

		static inline bool
		eth_strip_vlan(const void p, uint8_t new_ehdr_buf,
		uint16_t payload_offset, uint16_t tci)
		{
		uint16_t proto = be16_to_cpu(PKT_GET_ETH_HDR(p)->h_proto);
		struct vlan_header *hvlan = PKT_GET_VLAN_HDR(p);
		struct eth_header new_ehdr = (struct eth_header ) new_ehdr_buf;

		switch (proto) {
		case ETH_P_VLAN:
		case ETH_P_DVLAN:
		memcpy(new_ehdr->h_source, PKT_GET_ETH_HDR(p)->h_source, ETH_ALEN);
		memcpy(new_ehdr->h_dest, PKT_GET_ETH_HDR(p)->h_dest, ETH_ALEN);
		new_ehdr->h_proto = hvlan->h_proto;
		*tci = be16_to_cpu(hvlan->h_tci);
		*payload_offset =
		sizeof(struct eth_header) + sizeof(struct vlan_header);
		if (be16_to_cpu(new_ehdr->h_proto) == ETH_P_VLAN) {
		memcpy(PKT_GET_VLAN_HDR(new_ehdr),
		PKT_GET_DVLAN_HDR(p),
		sizeof(struct vlan_header));
		*payload_offset += sizeof(struct vlan_header);
		}
		return true;
		default:
		return false;
		}
		}

		static inline uint16_t
		eth_get_l3_proto(const void *l2hdr, size_t l2hdr_len)
		{
		uint8_t proto_ptr = (uint8_t ) l2hdr + l2hdr_len - sizeof(uint16_t);
		return be16_to_cpup((uint16_t *)proto_ptr);
		}

		void eth_setup_vlan_headers(struct eth_header *ehdr, uint16_t vlan_tag,
		bool *is_new);

		uint8_t eth_get_gso_type(uint16_t l3_proto, uint8_t *l3_hdr, uint8_t l4proto);

		void eth_get_protocols(const uint8_t *headers,
		uint32_t hdr_length,
		bool isip4, bool isip6,
		bool isudp, bool istcp);

		void eth_setup_ip4_fragmentation(const void *l2hdr, size_t l2hdr_len,
		void *l3hdr, size_t l3hdr_len,
		size_t l3payload_len,
		size_t frag_offset, bool more_frags);

		void
		eth_fix_ip4_checksum(void *l3hdr, size_t l3hdr_len);

		uint32_t
		eth_calc_pseudo_hdr_csum(struct ip_header *iphdr, uint16_t csl);

		bool
		eth_parse_ipv6_hdr(struct iovec *pkt, int pkt_frags,
		size_t ip6hdr_off, uint8_t *l4proto,
		size_t *full_hdr_len);

		#endif

net/Makefile.objs

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		common-obj-y = net.o queue.o checksum.o util.o hub.o
		common-obj-y += socket.o
		common-obj-y += dump.o
		common-obj-y += eth.o
		common-obj-$(CONFIG_POSIX) += tap.o
		common-obj-$(CONFIG_LINUX) += tap-linux.o
		common-obj-$(CONFIG_WIN32) += tap-win32.o

net/eth.c

0 → 100644

+217 −0

File added.

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