/*
- * Copyright (c) 2008, 2009, 2010, 2011 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 "flow.h"
#include "openvswitch/types.h"
#include "random.h"
#include "util.h"
{
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)
/* 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 *);
+
+uint16_t eth_mpls_depth(const struct ofpbuf *packet);
+
+void set_ethertype(struct ofpbuf *packet, ovs_be16 eth_type);
+
+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:
*
#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 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. */
} __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_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:
*
#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
};
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;
ovs_be16 icmp_csum;
+ union {
+ struct {
+ ovs_be16 id;
+ ovs_be16 seq;
+ } echo;
+ struct {
+ ovs_be16 empty;
+ ovs_be16 mtu;
+ } frag;
+ ovs_be32 gateway;
+ } icmp_fields;
+ uint8_t icmp_data[0];
};
BUILD_ASSERT_DECL(ICMP_HEADER_LEN == sizeof(struct icmp_header));
#define TCP_ACK 0x10
#define TCP_URG 0x20
+#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 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 {
} __attribute__((packed));
BUILD_ASSERT_DECL(ARP_ETH_HEADER_LEN == sizeof(struct arp_eth_header));
+/* 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";
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);
+}
+
+static inline bool is_ip_any(const struct flow *flow)
+{
+ return dl_type_is_ip_any(flow->dl_type);
+}
+
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,
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 */
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