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Diffstat (limited to 'qemu/include/net/eth.h')
-rw-r--r-- | qemu/include/net/eth.h | 347 |
1 files changed, 0 insertions, 347 deletions
diff --git a/qemu/include/net/eth.h b/qemu/include/net/eth.h deleted file mode 100644 index 18d0be3b1..000000000 --- a/qemu/include/net/eth.h +++ /dev/null @@ -1,347 +0,0 @@ -/* - * 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 "qemu/bswap.h" -#include "qemu/iov.h" - -#define ETH_ALEN 6 -#define ETH_HLEN 14 - -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_address { - 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_address ip6_src; /* source address */ - struct in6_address 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) /* Internet Protocol packet */ -#define ETH_P_ARP (0x0806) /* Address Resolution packet */ -#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 |