+++ /dev/null
-/* Copyright (c) 2008 The Board of Trustees of The Leland Stanford
- * Junior University
- *
- * We are making the OpenFlow specification and associated documentation
- * (Software) available for public use and benefit with the expectation
- * that others will use, modify and enhance the Software and contribute
- * those enhancements back to the community. However, since we would
- * like to make the Software available for broadest use, with as few
- * restrictions as possible permission is hereby granted, free of
- * charge, to any person obtaining a copy of this Software to deal in
- * the Software under the copyrights without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- *
- * The name and trademarks of copyright holder(s) may NOT be used in
- * advertising or publicity pertaining to the Software or any
- * derivatives without specific, written prior permission.
- */
-#ifndef PACKETS_H
-#define PACKETS_H 1
-
-#include <stdint.h>
-#include <string.h>
-#include "compiler.h"
-#include "random.h"
-#include "util.h"
-
-#define ETH_ADDR_LEN 6
-
-static const uint8_t eth_addr_broadcast[ETH_ADDR_LEN] UNUSED
- = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
-
-static inline bool eth_addr_is_broadcast(const uint8_t ea[6])
-{
- return (ea[0] & ea[1] & ea[2] & ea[3] & ea[4] & ea[5]) == 0xff;
-}
-static inline bool eth_addr_is_multicast(const uint8_t ea[6])
-{
- return ea[0] & 1;
-}
-static inline bool eth_addr_is_local(const uint8_t ea[6])
-{
- return ea[0] & 2;
-}
-static inline bool eth_addr_is_zero(const uint8_t ea[6])
-{
- return !(ea[0] | ea[1] | ea[2] | ea[3] | ea[4] | ea[5]);
-}
-static inline bool eth_addr_equals(const uint8_t a[ETH_ADDR_LEN],
- const uint8_t b[ETH_ADDR_LEN])
-{
- return !memcmp(a, b, ETH_ADDR_LEN);
-}
-static inline uint64_t eth_addr_to_uint64(const uint8_t ea[ETH_ADDR_LEN])
-{
- return (((uint64_t) ea[0] << 40)
- | ((uint64_t) ea[1] << 32)
- | ((uint64_t) ea[2] << 24)
- | ((uint64_t) ea[3] << 16)
- | ((uint64_t) ea[4] << 8)
- | ea[5]);
-}
-static inline void eth_addr_from_uint64(uint64_t x, uint8_t ea[ETH_ADDR_LEN])
-{
- ea[0] = x >> 40;
- ea[1] = x >> 32;
- ea[2] = x >> 24;
- ea[3] = x >> 16;
- ea[4] = x >> 8;
- ea[5] = x;
-}
-static inline void eth_addr_random(uint8_t ea[ETH_ADDR_LEN])
-{
- random_bytes(ea, ETH_ADDR_LEN);
- ea[0] &= ~1; /* Unicast. */
- ea[0] |= 2; /* Private. */
-}
-
-#define ETH_ADDR_FMT \
- "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8
-#define ETH_ADDR_ARGS(ea) \
- (ea)[0], (ea)[1], (ea)[2], (ea)[3], (ea)[4], (ea)[5]
-
-#define ETH_TYPE_IP 0x0800
-#define ETH_TYPE_ARP 0x0806
-#define ETH_TYPE_VLAN 0x8100
-
-#define ETH_HEADER_LEN 14
-#define ETH_PAYLOAD_MIN 46
-#define ETH_PAYLOAD_MAX 1500
-#define ETH_TOTAL_MIN (ETH_HEADER_LEN + ETH_PAYLOAD_MIN)
-#define ETH_TOTAL_MAX (ETH_HEADER_LEN + ETH_PAYLOAD_MAX)
-#define ETH_VLAN_TOTAL_MAX (ETH_HEADER_LEN + VLAN_HEADER_LEN + ETH_PAYLOAD_MAX)
-struct eth_header {
- uint8_t eth_dst[ETH_ADDR_LEN];
- uint8_t eth_src[ETH_ADDR_LEN];
- uint16_t eth_type;
-} __attribute__((packed));
-BUILD_ASSERT_DECL(ETH_HEADER_LEN == sizeof(struct eth_header));
-
-#define LLC_DSAP_SNAP 0xaa
-#define LLC_SSAP_SNAP 0xaa
-#define LLC_CNTL_SNAP 3
-
-#define LLC_HEADER_LEN 3
-struct llc_header {
- uint8_t llc_dsap;
- uint8_t llc_ssap;
- uint8_t llc_cntl;
-} __attribute__((packed));
-BUILD_ASSERT_DECL(LLC_HEADER_LEN == sizeof(struct llc_header));
-
-#define SNAP_ORG_ETHERNET "\0\0" /* The compiler adds a null byte, so
- sizeof(SNAP_ORG_ETHERNET) == 3. */
-#define SNAP_HEADER_LEN 5
-struct snap_header {
- uint8_t snap_org[3];
- uint16_t snap_type;
-} __attribute__((packed));
-BUILD_ASSERT_DECL(SNAP_HEADER_LEN == sizeof(struct snap_header));
-
-#define LLC_SNAP_HEADER_LEN (LLC_HEADER_LEN + SNAP_HEADER_LEN)
-struct llc_snap_header {
- struct llc_header llc;
- struct snap_header snap;
-} __attribute__((packed));
-BUILD_ASSERT_DECL(LLC_SNAP_HEADER_LEN == sizeof(struct llc_snap_header));
-
-#define VLAN_VID_MASK 0x0fff
-#define VLAN_PCP_MASK 0xe000
-
-#define VLAN_HEADER_LEN 4
-struct vlan_header {
- uint16_t vlan_tci; /* Lowest 12 bits are VLAN ID. */
- uint16_t vlan_next_type;
-};
-BUILD_ASSERT_DECL(VLAN_HEADER_LEN == sizeof(struct vlan_header));
-
-#define VLAN_ETH_HEADER_LEN (ETH_HEADER_LEN + VLAN_HEADER_LEN)
-struct vlan_eth_header {
- uint8_t veth_dst[ETH_ADDR_LEN];
- uint8_t veth_src[ETH_ADDR_LEN];
- uint16_t veth_type; /* Always htons(ETH_TYPE_VLAN). */
- uint16_t veth_tci; /* Lowest 12 bits are VLAN ID. */
- uint16_t veth_next_type;
-} __attribute__((packed));
-BUILD_ASSERT_DECL(VLAN_ETH_HEADER_LEN == sizeof(struct vlan_eth_header));
-
-#define IP_FMT "%"PRIu8".%"PRIu8".%"PRIu8".%"PRIu8
-#define IP_ARGS(ip) \
- ((uint8_t *) ip)[0], \
- ((uint8_t *) ip)[1], \
- ((uint8_t *) ip)[2], \
- ((uint8_t *) ip)[3]
-
-#define IP_VER(ip_ihl_ver) ((ip_ihl_ver) >> 4)
-#define IP_IHL(ip_ihl_ver) ((ip_ihl_ver) & 15)
-#define IP_IHL_VER(ihl, ver) (((ver) << 4) | (ihl))
-
-#define IP_TYPE_ICMP 1
-#define IP_TYPE_TCP 6
-#define IP_TYPE_UDP 17
-
-#define IP_VERSION 4
-
-#define IP_DONT_FRAGMENT 0x4000 /* Don't fragment. */
-#define IP_MORE_FRAGMENTS 0x2000 /* More fragments. */
-#define IP_FRAG_OFF_MASK 0x1fff /* Fragment offset. */
-#define IP_IS_FRAGMENT(ip_frag_off) \
- ((ip_frag_off) & htons(IP_MORE_FRAGMENTS | IP_FRAG_OFF_MASK))
-
-#define IP_HEADER_LEN 20
-struct ip_header {
- uint8_t ip_ihl_ver;
- uint8_t ip_tos;
- uint16_t ip_tot_len;
- uint16_t ip_id;
- uint16_t ip_frag_off;
- uint8_t ip_ttl;
- uint8_t ip_proto;
- uint16_t ip_csum;
- uint32_t ip_src;
- uint32_t ip_dst;
-};
-BUILD_ASSERT_DECL(IP_HEADER_LEN == sizeof(struct ip_header));
-
-#define UDP_HEADER_LEN 8
-struct udp_header {
- uint16_t udp_src;
- uint16_t udp_dst;
- uint16_t udp_len;
- uint16_t udp_csum;
-};
-BUILD_ASSERT_DECL(UDP_HEADER_LEN == sizeof(struct udp_header));
-
-#define TCP_FIN 0x01
-#define TCP_SYN 0x02
-#define TCP_RST 0x04
-#define TCP_PSH 0x08
-#define TCP_ACK 0x10
-#define TCP_URG 0x20
-
-#define TCP_FLAGS(tcp_ctl) (htons(tcp_ctl) & 0x003f)
-#define TCP_OFFSET(tcp_ctl) (htons(tcp_ctl) >> 12)
-
-#define TCP_HEADER_LEN 20
-struct tcp_header {
- uint16_t tcp_src;
- uint16_t tcp_dst;
- uint32_t tcp_seq;
- uint32_t tcp_ack;
- uint16_t tcp_ctl;
- uint16_t tcp_winsz;
- uint16_t tcp_csum;
- uint16_t tcp_urg;
-};
-BUILD_ASSERT_DECL(TCP_HEADER_LEN == sizeof(struct tcp_header));
-
-#define ARP_HRD_ETHERNET 1
-#define ARP_PRO_IP 0x0800
-#define ARP_OP_REQUEST 1
-#define ARP_OP_REPLY 2
-
-#define ARP_ETH_HEADER_LEN 28
-struct arp_eth_header {
- /* Generic members. */
- uint16_t ar_hrd; /* Hardware type. */
- uint16_t ar_pro; /* Protocol type. */
- uint8_t ar_hln; /* Hardware address length. */
- uint8_t ar_pln; /* Protocol address length. */
- uint16_t ar_op; /* Opcode. */
-
- /* Ethernet+IPv4 specific members. */
- uint8_t ar_sha[ETH_ADDR_LEN]; /* Sender hardware address. */
- uint32_t ar_spa; /* Sender protocol address. */
- uint8_t ar_tha[ETH_ADDR_LEN]; /* Target hardware address. */
- uint32_t ar_tpa; /* Target protocol address. */
-} __attribute__((packed));
-BUILD_ASSERT_DECL(ARP_ETH_HEADER_LEN == sizeof(struct arp_eth_header));
-
-#endif /* packets.h */
git://git.onelab.eu / sliver-openvswitch.git / blobdiff