/*
- * Copyright (c) 2008, 2009, 2010 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include <stdint.h>
#include <string.h>
#include "compiler.h"
+#include "openvswitch/types.h"
#include "random.h"
#include "util.h"
struct ofpbuf;
+struct ds;
+struct flow;
bool dpid_from_string(const char *s, uint64_t *dpidp);
= { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
static const uint8_t eth_addr_stp[ETH_ADDR_LEN] OVS_UNUSED
- = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x01 };
+ = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x00 };
+
+static const uint8_t eth_addr_lacp[ETH_ADDR_LEN] OVS_UNUSED
+ = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x02 };
static inline bool eth_addr_is_broadcast(const uint8_t ea[6])
{
{
/* Local if it is either a locally administered address or a Nicira random
* address. */
- return !!(ea[0] & 2)
- || (ea[0] == 0x00 && ea[1] == 0x23 && ea[2] == 0x20 && !!(ea[3] & 0x80));
+ return ea[0] & 2
+ || (ea[0] == 0x00 && ea[1] == 0x23 && ea[2] == 0x20 && ea[3] & 0x80);
}
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 int eth_mask_is_exact(const uint8_t ea[ETH_ADDR_LEN])
+{
+ return (ea[0] & ea[1] & ea[2] & ea[3] & ea[4] & ea[5]) == 0xff;
+}
+
+static inline int eth_addr_compare_3way(const uint8_t a[ETH_ADDR_LEN],
+ const uint8_t b[ETH_ADDR_LEN])
+{
+ return memcmp(a, b, ETH_ADDR_LEN);
+}
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);
+ return !eth_addr_compare_3way(a, b);
+}
+static inline bool eth_addr_equal_except(const uint8_t a[ETH_ADDR_LEN],
+ const uint8_t b[ETH_ADDR_LEN],
+ const uint8_t mask[ETH_ADDR_LEN])
+{
+ return !(((a[0] ^ b[0]) & mask[0])
+ || ((a[1] ^ b[1]) & mask[1])
+ || ((a[2] ^ b[2]) & mask[2])
+ || ((a[3] ^ b[3]) & mask[3])
+ || ((a[4] ^ b[4]) & mask[4])
+ || ((a[5] ^ b[5]) & mask[5]));
}
static inline uint64_t eth_addr_to_uint64(const uint8_t ea[ETH_ADDR_LEN])
{
/* Set the top bit to indicate random Nicira address. */
ea[3] |= 0x80;
}
-/* Returns true if 'ea' is a reserved multicast address, that a bridge must
- * never forward, false otherwise. */
-static inline bool eth_addr_is_reserved(const uint8_t ea[ETH_ADDR_LEN])
-{
- return (ea[0] == 0x01
- && ea[1] == 0x80
- && ea[2] == 0xc2
- && ea[3] == 0x00
- && ea[4] == 0x00
- && (ea[5] & 0xf0) == 0x00);
-}
+bool eth_addr_is_reserved(const uint8_t ea[ETH_ADDR_LEN]);
bool eth_addr_from_string(const char *, uint8_t ea[ETH_ADDR_LEN]);
-void compose_benign_packet(struct ofpbuf *, const char *tag,
- uint16_t snap_type,
- const uint8_t eth_src[ETH_ADDR_LEN]);
+void compose_rarp(struct ofpbuf *, const uint8_t eth_src[ETH_ADDR_LEN]);
+
+void eth_push_vlan(struct ofpbuf *, ovs_be16 tci);
+void eth_pop_vlan(struct ofpbuf *);
+
+const char *eth_from_hex(const char *hex, struct ofpbuf **packetp);
+void eth_format_masked(const uint8_t eth[ETH_ADDR_LEN],
+ const uint8_t mask[ETH_ADDR_LEN], struct ds *s);
+void eth_addr_bitand(const uint8_t src[ETH_ADDR_LEN],
+ const uint8_t mask[ETH_ADDR_LEN],
+ uint8_t dst[ETH_ADDR_LEN]);
/* Example:
*
#define ETH_TYPE_IP 0x0800
#define ETH_TYPE_ARP 0x0806
#define ETH_TYPE_VLAN 0x8100
+#define ETH_TYPE_IPV6 0x86dd
+#define ETH_TYPE_LACP 0x8809
+#define ETH_TYPE_RARP 0x8035
+#define ETH_TYPE_MPLS 0x8847
+#define ETH_TYPE_MPLS_MCAST 0x8848
+
+/* Minimum value for an Ethernet type. Values below this are IEEE 802.2 frame
+ * lengths. */
+#define ETH_TYPE_MIN 0x600
#define ETH_HEADER_LEN 14
#define ETH_PAYLOAD_MIN 46
struct eth_header {
uint8_t eth_dst[ETH_ADDR_LEN];
uint8_t eth_src[ETH_ADDR_LEN];
- uint16_t eth_type;
+ ovs_be16 eth_type;
} __attribute__((packed));
BUILD_ASSERT_DECL(ETH_HEADER_LEN == sizeof(struct eth_header));
#define SNAP_HEADER_LEN 5
struct snap_header {
uint8_t snap_org[3];
- uint16_t snap_type;
+ ovs_be16 snap_type;
} __attribute__((packed));
BUILD_ASSERT_DECL(SNAP_HEADER_LEN == sizeof(struct snap_header));
/* Given the vlan_tci field from an 802.1Q header, in network byte order,
* returns the VLAN ID in host byte order. */
static inline uint16_t
-vlan_tci_to_vid(uint16_t vlan_tci)
+vlan_tci_to_vid(ovs_be16 vlan_tci)
{
return (ntohs(vlan_tci) & VLAN_VID_MASK) >> VLAN_VID_SHIFT;
}
/* Given the vlan_tci field from an 802.1Q header, in network byte order,
* returns the priority code point (PCP) in host byte order. */
static inline int
-vlan_tci_to_pcp(uint16_t vlan_tci)
+vlan_tci_to_pcp(ovs_be16 vlan_tci)
{
return (ntohs(vlan_tci) & VLAN_PCP_MASK) >> VLAN_PCP_SHIFT;
}
#define VLAN_HEADER_LEN 4
struct vlan_header {
- uint16_t vlan_tci; /* Lowest 12 bits are VLAN ID. */
- uint16_t vlan_next_type;
+ ovs_be16 vlan_tci; /* Lowest 12 bits are VLAN ID. */
+ ovs_be16 vlan_next_type;
};
BUILD_ASSERT_DECL(VLAN_HEADER_LEN == sizeof(struct vlan_header));
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;
+ ovs_be16 veth_type; /* Always htons(ETH_TYPE_VLAN). */
+ ovs_be16 veth_tci; /* Lowest 12 bits are VLAN ID. */
+ ovs_be16 veth_next_type;
} __attribute__((packed));
BUILD_ASSERT_DECL(VLAN_ETH_HEADER_LEN == sizeof(struct vlan_eth_header));
((uint8_t *) ip)[2], \
((uint8_t *) ip)[3]
+/* Example:
+ *
+ * char *string = "1 33.44.55.66 2";
+ * ovs_be32 ip;
+ * int a, b;
+ *
+ * if (sscanf(string, "%d"IP_SCAN_FMT"%d",
+ * &a, IP_SCAN_ARGS(&ip), &b) == 1 + IP_SCAN_COUNT + 1) {
+ * ...
+ * }
+ */
+#define IP_SCAN_FMT "%"SCNu8".%"SCNu8".%"SCNu8".%"SCNu8
+#define IP_SCAN_ARGS(ip) \
+ ((void) (ovs_be32) *(ip), &((uint8_t *) ip)[0]), \
+ &((uint8_t *) ip)[1], \
+ &((uint8_t *) ip)[2], \
+ &((uint8_t *) ip)[3]
+#define IP_SCAN_COUNT 4
+
+/* Returns true if 'netmask' is a CIDR netmask, that is, if it consists of N
+ * high-order 1-bits and 32-N low-order 0-bits. */
+static inline bool
+ip_is_cidr(ovs_be32 netmask)
+{
+ uint32_t x = ~ntohl(netmask);
+ return !(x & (x + 1));
+}
+static inline bool
+ip_is_multicast(ovs_be32 ip)
+{
+ return (ip & htonl(0xf0000000)) == htonl(0xe0000000);
+}
+int ip_count_cidr_bits(ovs_be32 netmask);
+void ip_format_masked(ovs_be32 ip, ovs_be32 mask, struct ds *);
+
#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))
+#ifndef IPPROTO_SCTP
+#define IPPROTO_SCTP 132
+#endif
+
/* TOS fields. */
+#define IP_ECN_NOT_ECT 0x0
+#define IP_ECN_ECT_1 0x01
+#define IP_ECN_ECT_0 0x02
+#define IP_ECN_CE 0x03
#define IP_ECN_MASK 0x03
#define IP_DSCP_MASK 0xfc
-#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. */
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;
+ ovs_be16 ip_tot_len;
+ ovs_be16 ip_id;
+ ovs_be16 ip_frag_off;
uint8_t ip_ttl;
uint8_t ip_proto;
- uint16_t ip_csum;
- uint32_t ip_src;
- uint32_t ip_dst;
+ ovs_be16 ip_csum;
+ ovs_16aligned_be32 ip_src;
+ ovs_16aligned_be32 ip_dst;
};
BUILD_ASSERT_DECL(IP_HEADER_LEN == sizeof(struct ip_header));
-#define ICMP_HEADER_LEN 4
+#define ICMP_HEADER_LEN 8
struct icmp_header {
uint8_t icmp_type;
uint8_t icmp_code;
- uint16_t icmp_csum;
+ ovs_be16 icmp_csum;
+ union {
+ struct {
+ ovs_be16 id;
+ ovs_be16 seq;
+ } echo;
+ struct {
+ ovs_be16 empty;
+ ovs_be16 mtu;
+ } frag;
+ ovs_16aligned_be32 gateway;
+ } icmp_fields;
+ uint8_t icmp_data[0];
};
BUILD_ASSERT_DECL(ICMP_HEADER_LEN == sizeof(struct icmp_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;
+ ovs_be16 udp_src;
+ ovs_be16 udp_dst;
+ ovs_be16 udp_len;
+ ovs_be16 udp_csum;
};
BUILD_ASSERT_DECL(UDP_HEADER_LEN == sizeof(struct udp_header));
#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_CTL(flags, offset) (htons((flags) | ((offset) << 12)))
+#define TCP_FLAGS(tcp_ctl) (ntohs(tcp_ctl) & 0x003f)
+#define TCP_OFFSET(tcp_ctl) (ntohs(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;
+ ovs_be16 tcp_src;
+ ovs_be16 tcp_dst;
+ ovs_16aligned_be32 tcp_seq;
+ ovs_16aligned_be32 tcp_ack;
+ ovs_be16 tcp_ctl;
+ ovs_be16 tcp_winsz;
+ ovs_be16 tcp_csum;
+ ovs_be16 tcp_urg;
};
BUILD_ASSERT_DECL(TCP_HEADER_LEN == sizeof(struct tcp_header));
#define ARP_PRO_IP 0x0800
#define ARP_OP_REQUEST 1
#define ARP_OP_REPLY 2
+#define ARP_OP_RARP 3
#define ARP_ETH_HEADER_LEN 28
struct arp_eth_header {
/* Generic members. */
- uint16_t ar_hrd; /* Hardware type. */
- uint16_t ar_pro; /* Protocol type. */
+ ovs_be16 ar_hrd; /* Hardware type. */
+ ovs_be16 ar_pro; /* Protocol type. */
uint8_t ar_hln; /* Hardware address length. */
uint8_t ar_pln; /* Protocol address length. */
- uint16_t ar_op; /* Opcode. */
+ ovs_be16 ar_op; /* Opcode. */
/* Ethernet+IPv4 specific members. */
uint8_t ar_sha[ETH_ADDR_LEN]; /* Sender hardware address. */
- uint32_t ar_spa; /* Sender protocol address. */
+ ovs_16aligned_be32 ar_spa; /* Sender protocol address. */
uint8_t ar_tha[ETH_ADDR_LEN]; /* Target hardware address. */
- uint32_t ar_tpa; /* Target protocol address. */
-} __attribute__((packed));
+ ovs_16aligned_be32 ar_tpa; /* Target protocol address. */
+};
BUILD_ASSERT_DECL(ARP_ETH_HEADER_LEN == sizeof(struct arp_eth_header));
+/* Like struct in6_addr, but whereas that struct requires 32-bit alignment on
+ * most implementations, this one only requires 16-bit alignment. */
+union ovs_16aligned_in6_addr {
+ ovs_be16 be16[8];
+ ovs_16aligned_be32 be32[4];
+};
+
+/* Like struct in6_hdr, but whereas that struct requires 32-bit alignment, this
+ * one only requires 16-bit alignment. */
+struct ovs_16aligned_ip6_hdr {
+ union {
+ struct ovs_16aligned_ip6_hdrctl {
+ ovs_16aligned_be32 ip6_un1_flow;
+ ovs_be16 ip6_un1_plen;
+ uint8_t ip6_un1_nxt;
+ uint8_t ip6_un1_hlim;
+ } ip6_un1;
+ uint8_t ip6_un2_vfc;
+ } ip6_ctlun;
+ union ovs_16aligned_in6_addr ip6_src;
+ union ovs_16aligned_in6_addr ip6_dst;
+};
+
+/* Like struct in6_frag, but whereas that struct requires 32-bit alignment,
+ * this one only requires 16-bit alignment. */
+struct ovs_16aligned_ip6_frag {
+ uint8_t ip6f_nxt;
+ uint8_t ip6f_reserved;
+ ovs_be16 ip6f_offlg;
+ ovs_16aligned_be32 ip6f_ident;
+};
+
+/* The IPv6 flow label is in the lower 20 bits of the first 32-bit word. */
+#define IPV6_LABEL_MASK 0x000fffff
+
+/* Example:
+ *
+ * char *string = "1 ::1 2";
+ * char ipv6_s[IPV6_SCAN_LEN + 1];
+ * struct in6_addr ipv6;
+ *
+ * if (sscanf(string, "%d"IPV6_SCAN_FMT"%d", &a, ipv6_s, &b) == 3
+ * && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) {
+ * ...
+ * }
+ */
+#define IPV6_SCAN_FMT "%46[0123456789abcdefABCDEF:.]"
+#define IPV6_SCAN_LEN 46
+
+extern const struct in6_addr in6addr_exact;
+#define IN6ADDR_EXACT_INIT { { { 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, \
+ 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff } } }
+
+static inline bool ipv6_addr_equals(const struct in6_addr *a,
+ const struct in6_addr *b)
+{
+#ifdef IN6_ARE_ADDR_EQUAL
+ return IN6_ARE_ADDR_EQUAL(a, b);
+#else
+ return !memcmp(a, b, sizeof(*a));
+#endif
+}
+
+static inline bool ipv6_mask_is_any(const struct in6_addr *mask) {
+ return ipv6_addr_equals(mask, &in6addr_any);
+}
+
+static inline bool ipv6_mask_is_exact(const struct in6_addr *mask) {
+ return ipv6_addr_equals(mask, &in6addr_exact);
+}
+
+void format_ipv6_addr(char *addr_str, const struct in6_addr *addr);
+void print_ipv6_addr(struct ds *string, const struct in6_addr *addr);
+void print_ipv6_masked(struct ds *string, const struct in6_addr *addr,
+ const struct in6_addr *mask);
+struct in6_addr ipv6_addr_bitand(const struct in6_addr *src,
+ const struct in6_addr *mask);
+struct in6_addr ipv6_create_mask(int mask);
+int ipv6_count_cidr_bits(const struct in6_addr *netmask);
+bool ipv6_is_cidr(const struct in6_addr *netmask);
+
+void *eth_compose(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN],
+ const uint8_t eth_src[ETH_ADDR_LEN], uint16_t eth_type,
+ size_t size);
+void *snap_compose(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN],
+ const uint8_t eth_src[ETH_ADDR_LEN],
+ unsigned int oui, uint16_t snap_type, size_t size);
+void packet_set_ipv4(struct ofpbuf *, ovs_be32 src, ovs_be32 dst, uint8_t tos,
+ uint8_t ttl);
+void packet_set_ipv6(struct ofpbuf *, uint8_t proto, const ovs_be32 src[4],
+ const ovs_be32 dst[4], uint8_t tc,
+ ovs_be32 fl, uint8_t hlmit);
+void packet_set_tcp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
+void packet_set_udp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
+
+uint8_t packet_get_tcp_flags(const struct ofpbuf *, const struct flow *);
+void packet_format_tcp_flags(struct ds *, uint8_t);
+
#endif /* packets.h */
projects / cascardo / ovs.git / blobdiff