added drain method to netdev-tunnel's

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

diff --git a/lib/packets.h b/lib/packets.h
index e727cc9..dc71b05 100644 (file)
--- a/lib/packets.h
+++ b/lib/packets.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira Networks.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -29,6 +29,7 @@
 
 struct ofpbuf;
 struct ds;
+struct flow;
 
 bool dpid_from_string(const char *s, uint64_t *dpidp);
 
@@ -38,7 +39,7 @@ 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 };
@@ -132,6 +133,9 @@ void compose_benign_packet(struct ofpbuf *, const char *tag,
                            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);
 
 /* Example:
  *
@@ -291,6 +295,11 @@ 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 *);
 
@@ -325,11 +334,23 @@ 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));
 
@@ -349,6 +370,7 @@ 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)
 
@@ -387,6 +409,9 @@ 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";
@@ -439,5 +464,12 @@ 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);
+
+uint8_t packet_get_tcp_flags(const struct ofpbuf *, const struct flow *);
+void packet_format_tcp_flags(struct ds *, uint8_t);
 
 #endif /* packets.h */