meta-flow: New "subfield" data structure.

[sliver-openvswitch.git] / lib / packets.h

diff --git a/lib/packets.h b/lib/packets.h
index a389e6a..78ccfe9 100644 (file)
--- a/lib/packets.h
+++ b/lib/packets.h
@@ -38,7 +38,7 @@ static const uint8_t eth_addr_broadcast[ETH_ADDR_LEN] OVS_UNUSED
     = { 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 };
@@ -131,7 +131,10 @@ void compose_benign_packet(struct ofpbuf *, const char *tag,
                            uint16_t snap_type,
                            const uint8_t eth_src[ETH_ADDR_LEN]);
 
-void eth_set_vlan_tci(struct ofpbuf *, ovs_be16 tci);
+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);
 
 /* Example:
  *
@@ -291,6 +294,13 @@ 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)
@@ -323,11 +333,23 @@ struct ip_header {
 };
 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));
 
@@ -347,6 +369,7 @@ BUILD_ASSERT_DECL(UDP_HEADER_LEN == sizeof(struct udp_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)
 
@@ -385,6 +408,9 @@ 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";
@@ -423,6 +449,8 @@ static inline bool ipv6_mask_is_exact(const struct in6_addr *mask) {
 
 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);
@@ -435,5 +463,9 @@ void *eth_compose(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN],
 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_tcp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
+void packet_set_udp_port(struct ofpbuf *, ovs_be16 src, ovs_be16 dst);
 
 #endif /* packets.h */