/*
- * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira, Inc.
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014 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 "compiler.h"
#include "openvswitch/types.h"
#include "random.h"
+#include "hash.h"
#include "util.h"
struct ofpbuf;
struct ds;
-struct flow;
+
+/* Tunnel information used in flow key and metadata. */
+struct flow_tnl {
+ ovs_be64 tun_id;
+ ovs_be32 ip_src;
+ ovs_be32 ip_dst;
+ uint16_t flags;
+ uint8_t ip_tos;
+ uint8_t ip_ttl;
+};
+
+/* Unfortunately, a "struct flow" sometimes has to handle OpenFlow port
+ * numbers and other times datapath (dpif) port numbers. This union allows
+ * access to both. */
+union flow_in_port {
+ odp_port_t odp_port;
+ ofp_port_t ofp_port;
+};
+
+/* Datapath packet metadata */
+struct pkt_metadata {
+ uint32_t recirc_id; /* Recirculation id carried with the
+ recirculating packets. 0 for packets
+ received from the wire. */
+ uint32_t dp_hash; /* hash value computed by the recirculation
+ action. */
+ struct flow_tnl tunnel; /* Encapsulating tunnel parameters. */
+ uint32_t skb_priority; /* Packet priority for QoS. */
+ uint32_t pkt_mark; /* Packet mark. */
+ union flow_in_port in_port; /* Input port. */
+};
+
+#define PKT_METADATA_INITIALIZER(PORT) \
+ (struct pkt_metadata){ 0, 0, { 0, 0, 0, 0, 0, 0}, 0, 0, {(PORT)} }
bool dpid_from_string(const char *s, uint64_t *dpidp);
static const uint8_t eth_addr_lacp[ETH_ADDR_LEN] OVS_UNUSED
= { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x02 };
+static const uint8_t eth_addr_bfd[ETH_ADDR_LEN] OVS_UNUSED
+ = { 0x00, 0x23, 0x20, 0x00, 0x00, 0x01 };
+
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;
{
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 !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])
{
return (((uint64_t) ea[0] << 40)
| ((uint64_t) ea[4] << 8)
| ea[5]);
}
+static inline uint64_t eth_addr_vlan_to_uint64(const uint8_t ea[ETH_ADDR_LEN],
+ uint16_t vlan)
+{
+ return (((uint64_t)vlan << 48) | eth_addr_to_uint64(ea));
+}
static inline void eth_addr_from_uint64(uint64_t x, uint8_t ea[ETH_ADDR_LEN])
{
ea[0] = x >> 40;
/* 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])
+static inline uint32_t hash_mac(const uint8_t ea[ETH_ADDR_LEN],
+ const uint16_t vlan, const uint32_t basis)
{
- return (ea[0] == 0x01
- && ea[1] == 0x80
- && ea[2] == 0xc2
- && ea[3] == 0x00
- && ea[4] == 0x00
- && (ea[5] & 0xf0) == 0x00);
+ return hash_uint64_basis(eth_addr_vlan_to_uint64(ea, vlan), basis);
}
+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_push_vlan(struct ofpbuf *, ovs_be16 tpid, 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]);
+
+void set_mpls_lse(struct ofpbuf *, ovs_be32 label);
+void push_mpls(struct ofpbuf *packet, ovs_be16 ethtype, ovs_be32 lse);
+void pop_mpls(struct ofpbuf *, ovs_be16 ethtype);
+
+void set_mpls_lse_ttl(ovs_be32 *lse, uint8_t ttl);
+void set_mpls_lse_tc(ovs_be32 *lse, uint8_t tc);
+void set_mpls_lse_label(ovs_be32 *lse, ovs_be32 label);
+void set_mpls_lse_bos(ovs_be32 *lse, uint8_t bos);
+ovs_be32 set_mpls_lse_values(uint8_t ttl, uint8_t tc, uint8_t bos,
+ ovs_be32 label);
/* Example:
*
* uint8_t mac[ETH_ADDR_LEN];
* int a, b;
*
- * if (sscanf(string, "%d"ETH_ADDR_SCAN_FMT"%d",
- * &a, ETH_ADDR_SCAN_ARGS(mac), &b) == 1 + ETH_ADDR_SCAN_COUNT + 1) {
+ * if (ovs_scan(string, "%d"ETH_ADDR_SCAN_FMT"%d",
+ * &a, ETH_ADDR_SCAN_ARGS(mac), &b)) {
* ...
* }
*/
#define ETH_ADDR_SCAN_FMT "%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8":%"SCNx8
#define ETH_ADDR_SCAN_ARGS(ea) \
&(ea)[0], &(ea)[1], &(ea)[2], &(ea)[3], &(ea)[4], &(ea)[5]
-#define ETH_ADDR_SCAN_COUNT 6
#define ETH_TYPE_IP 0x0800
#define ETH_TYPE_ARP 0x0806
-#define ETH_TYPE_VLAN 0x8100
+#define ETH_TYPE_VLAN_8021Q 0x8100
+#define ETH_TYPE_VLAN ETH_TYPE_VLAN_8021Q
+#define ETH_TYPE_VLAN_8021AD 0x88a8
#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
+
+static inline bool eth_type_mpls(ovs_be16 eth_type)
+{
+ return eth_type == htons(ETH_TYPE_MPLS) ||
+ eth_type == htons(ETH_TYPE_MPLS_MCAST);
+}
/* Minimum value for an Ethernet type. Values below this are IEEE 802.2 frame
* lengths. */
#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)
+OVS_PACKED(
struct eth_header {
uint8_t eth_dst[ETH_ADDR_LEN];
uint8_t eth_src[ETH_ADDR_LEN];
ovs_be16 eth_type;
-} __attribute__((packed));
+});
BUILD_ASSERT_DECL(ETH_HEADER_LEN == sizeof(struct eth_header));
#define LLC_DSAP_SNAP 0xaa
#define LLC_CNTL_SNAP 3
#define LLC_HEADER_LEN 3
+OVS_PACKED(
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
+OVS_PACKED(
struct snap_header {
uint8_t snap_org[3];
ovs_be16 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)
+OVS_PACKED(
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_SHIFT 13
#define VLAN_CFI 0x1000
+#define VLAN_CFI_SHIFT 12
/* Given the vlan_tci field from an 802.1Q header, in network byte order,
* returns the VLAN ID in host byte order. */
return (ntohs(vlan_tci) & VLAN_PCP_MASK) >> VLAN_PCP_SHIFT;
}
+/* Given the vlan_tci field from an 802.1Q header, in network byte order,
+ * returns the Canonical Format Indicator (CFI). */
+static inline int
+vlan_tci_to_cfi(ovs_be16 vlan_tci)
+{
+ return (vlan_tci & htons(VLAN_CFI)) != 0;
+}
+
#define VLAN_HEADER_LEN 4
struct vlan_header {
ovs_be16 vlan_tci; /* Lowest 12 bits are VLAN ID. */
BUILD_ASSERT_DECL(VLAN_HEADER_LEN == sizeof(struct vlan_header));
#define VLAN_ETH_HEADER_LEN (ETH_HEADER_LEN + VLAN_HEADER_LEN)
+OVS_PACKED(
struct vlan_eth_header {
uint8_t veth_dst[ETH_ADDR_LEN];
uint8_t veth_src[ETH_ADDR_LEN];
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));
-/* The "(void) (ip)[0]" below has no effect on the value, since it's the first
- * argument of a comma expression, but it makes sure that 'ip' is a pointer.
- * This is useful since a common mistake is to pass an integer instead of a
- * pointer to IP_ARGS. */
-#define IP_FMT "%"PRIu8".%"PRIu8".%"PRIu8".%"PRIu8
+/* MPLS related definitions */
+#define MPLS_TTL_MASK 0x000000ff
+#define MPLS_TTL_SHIFT 0
+
+#define MPLS_BOS_MASK 0x00000100
+#define MPLS_BOS_SHIFT 8
+
+#define MPLS_TC_MASK 0x00000e00
+#define MPLS_TC_SHIFT 9
+
+#define MPLS_LABEL_MASK 0xfffff000
+#define MPLS_LABEL_SHIFT 12
+
+#define MPLS_HLEN 4
+
+struct mpls_hdr {
+ ovs_16aligned_be32 mpls_lse;
+};
+BUILD_ASSERT_DECL(MPLS_HLEN == sizeof(struct mpls_hdr));
+
+/* Given a mpls label stack entry in network byte order
+ * return mpls label in host byte order */
+static inline uint32_t
+mpls_lse_to_label(ovs_be32 mpls_lse)
+{
+ return (ntohl(mpls_lse) & MPLS_LABEL_MASK) >> MPLS_LABEL_SHIFT;
+}
+
+/* Given a mpls label stack entry in network byte order
+ * return mpls tc */
+static inline uint8_t
+mpls_lse_to_tc(ovs_be32 mpls_lse)
+{
+ return (ntohl(mpls_lse) & MPLS_TC_MASK) >> MPLS_TC_SHIFT;
+}
+
+/* Given a mpls label stack entry in network byte order
+ * return mpls ttl */
+static inline uint8_t
+mpls_lse_to_ttl(ovs_be32 mpls_lse)
+{
+ return (ntohl(mpls_lse) & MPLS_TTL_MASK) >> MPLS_TTL_SHIFT;
+}
+
+/* Set TTL in mpls lse. */
+static inline void
+flow_set_mpls_lse_ttl(ovs_be32 *mpls_lse, uint8_t ttl)
+{
+ *mpls_lse &= ~htonl(MPLS_TTL_MASK);
+ *mpls_lse |= htonl(ttl << MPLS_TTL_SHIFT);
+}
+
+/* Given a mpls label stack entry in network byte order
+ * return mpls BoS bit */
+static inline uint8_t
+mpls_lse_to_bos(ovs_be32 mpls_lse)
+{
+ return (mpls_lse & htonl(MPLS_BOS_MASK)) != 0;
+}
+
+#define IP_FMT "%"PRIu32".%"PRIu32".%"PRIu32".%"PRIu32
#define IP_ARGS(ip) \
- ((void) (ip)[0], ((uint8_t *) ip)[0]), \
- ((uint8_t *) ip)[1], \
- ((uint8_t *) ip)[2], \
- ((uint8_t *) ip)[3]
+ ntohl(ip) >> 24, \
+ (ntohl(ip) >> 16) & 0xff, \
+ (ntohl(ip) >> 8) & 0xff, \
+ ntohl(ip) & 0xff
/* Example:
*
* 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) {
+ * if (ovs_scan(string, "%d"IP_SCAN_FMT"%d", &a, IP_SCAN_ARGS(&ip), &b)) {
* ...
* }
*/
&((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. */
#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
uint8_t ip_ttl;
uint8_t ip_proto;
ovs_be16 ip_csum;
- ovs_be32 ip_src;
- ovs_be32 ip_dst;
+ ovs_16aligned_be32 ip_src;
+ ovs_16aligned_be32 ip_dst;
};
BUILD_ASSERT_DECL(IP_HEADER_LEN == sizeof(struct ip_header));
ovs_be16 empty;
ovs_be16 mtu;
} frag;
- ovs_be32 gateway;
+ ovs_16aligned_be32 gateway;
} icmp_fields;
uint8_t icmp_data[0];
};
BUILD_ASSERT_DECL(ICMP_HEADER_LEN == sizeof(struct icmp_header));
+#define SCTP_HEADER_LEN 12
+struct sctp_header {
+ ovs_be16 sctp_src;
+ ovs_be16 sctp_dst;
+ ovs_16aligned_be32 sctp_vtag;
+ ovs_16aligned_be32 sctp_csum;
+};
+BUILD_ASSERT_DECL(SCTP_HEADER_LEN == sizeof(struct sctp_header));
+
#define UDP_HEADER_LEN 8
struct udp_header {
ovs_be16 udp_src;
};
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_FIN 0x001
+#define TCP_SYN 0x002
+#define TCP_RST 0x004
+#define TCP_PSH 0x008
+#define TCP_ACK 0x010
+#define TCP_URG 0x020
+#define TCP_ECE 0x040
+#define TCP_CWR 0x080
+#define TCP_NS 0x100
#define TCP_CTL(flags, offset) (htons((flags) | ((offset) << 12)))
-#define TCP_FLAGS(tcp_ctl) (ntohs(tcp_ctl) & 0x003f)
+#define TCP_FLAGS(tcp_ctl) (ntohs(tcp_ctl) & 0x0fff)
+#define TCP_FLAGS_BE16(tcp_ctl) ((tcp_ctl) & htons(0x0fff))
#define TCP_OFFSET(tcp_ctl) (ntohs(tcp_ctl) >> 12)
#define TCP_HEADER_LEN 20
struct tcp_header {
ovs_be16 tcp_src;
ovs_be16 tcp_dst;
- ovs_be32 tcp_seq;
- ovs_be32 tcp_ack;
+ ovs_16aligned_be32 tcp_seq;
+ ovs_16aligned_be32 tcp_ack;
ovs_be16 tcp_ctl;
ovs_be16 tcp_winsz;
ovs_be16 tcp_csum;
#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 {
/* Ethernet+IPv4 specific members. */
uint8_t ar_sha[ETH_ADDR_LEN]; /* Sender hardware address. */
- ovs_be32 ar_spa; /* Sender protocol address. */
+ ovs_16aligned_be32 ar_spa; /* Sender protocol address. */
uint8_t ar_tha[ETH_ADDR_LEN]; /* Target hardware address. */
- ovs_be32 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
* char ipv6_s[IPV6_SCAN_LEN + 1];
* struct in6_addr ipv6;
*
- * if (sscanf(string, "%d"IPV6_SCAN_FMT"%d", &a, ipv6_s, &b) == 3
+ * if (ovs_scan(string, "%d"IPV6_SCAN_FMT"%d", &a, ipv6_s, &b)
* && inet_pton(AF_INET6, ipv6_s, &ipv6) == 1) {
* ...
* }
return ipv6_addr_equals(mask, &in6addr_exact);
}
+static inline bool dl_type_is_ip_any(ovs_be16 dl_type)
+{
+ return dl_type == htons(ETH_TYPE_IP)
+ || dl_type == htons(ETH_TYPE_IPV6);
+}
+
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,
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);
+void packet_set_sctp_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);
+void packet_format_tcp_flags(struct ds *, uint16_t);
+const char *packet_tcp_flag_to_string(uint32_t flag);
#endif /* packets.h */
git://git.onelab.eu / sliver-openvswitch.git / blobdiff