use error checking mutexs in pltap&tunnel

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

diff --git a/lib/packets.h b/lib/packets.h
index b73ff63..2108bef 100644 (file)
--- a/lib/packets.h
+++ b/lib/packets.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira, Inc.
+ * 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.
@@ -44,6 +44,9 @@ static const uint8_t eth_addr_stp[ETH_ADDR_LEN] OVS_UNUSED
 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;
@@ -217,11 +220,12 @@ static inline bool eth_type_mpls(ovs_be16 eth_type)
 #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
@@ -229,27 +233,30 @@ BUILD_ASSERT_DECL(ETH_HEADER_LEN == sizeof(struct eth_header));
 #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
@@ -259,6 +266,7 @@ BUILD_ASSERT_DECL(LLC_SNAP_HEADER_LEN == sizeof(struct llc_snap_header));
 #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. */
@@ -276,6 +284,14 @@ vlan_tci_to_pcp(ovs_be16 vlan_tci)
     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. */
@@ -284,13 +300,14 @@ struct vlan_header {
 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));
 
 /* MPLS related definitions */
@@ -454,6 +471,15 @@ struct icmp_header {
 };
 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_be32 sctp_vtag;
+    ovs_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;
@@ -494,6 +520,7 @@ BUILD_ASSERT_DECL(TCP_HEADER_LEN == sizeof(struct tcp_header));
 #define ARP_OP_RARP 3
 
 #define ARP_ETH_HEADER_LEN 28
+OVS_PACKED(
 struct arp_eth_header {
     /* Generic members. */
     ovs_be16 ar_hrd;           /* Hardware type. */
@@ -507,7 +534,7 @@ struct arp_eth_header {
     ovs_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));
+});
 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. */
@@ -583,6 +610,7 @@ void packet_set_ipv6(struct ofpbuf *, uint8_t proto, const ovs_be32 src[4],
                      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);