/*
- * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira, Inc.
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 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 "geneve.h"
#include "openvswitch/types.h"
+#include "odp-netlink.h"
#include "random.h"
+#include "hash.h"
+#include "tun-metadata.h"
+#include "unaligned.h"
#include "util.h"
-struct ofpbuf;
+struct dp_packet;
struct ds;
+/* Tunnel information used in flow key and metadata. */
+struct flow_tnl {
+ ovs_be32 ip_dst;
+ struct in6_addr ipv6_dst;
+ ovs_be32 ip_src;
+ struct in6_addr ipv6_src;
+ ovs_be64 tun_id;
+ uint16_t flags;
+ uint8_t ip_tos;
+ uint8_t ip_ttl;
+ ovs_be16 tp_src;
+ ovs_be16 tp_dst;
+ ovs_be16 gbp_id;
+ uint8_t gbp_flags;
+ uint8_t pad1[5]; /* Pad to 64 bits. */
+ struct tun_metadata metadata;
+};
+
+/* Some flags are exposed through OpenFlow while others are used only
+ * internally. */
+
+/* Public flags */
+#define FLOW_TNL_F_OAM (1 << 0)
+
+#define FLOW_TNL_PUB_F_MASK ((1 << 1) - 1)
+
+/* Private flags */
+#define FLOW_TNL_F_DONT_FRAGMENT (1 << 1)
+#define FLOW_TNL_F_CSUM (1 << 2)
+#define FLOW_TNL_F_KEY (1 << 3)
+
+#define FLOW_TNL_F_MASK ((1 << 4) - 1)
+
+/* Purely internal to OVS userspace. These flags should never be exposed to
+ * the outside world and so aren't included in the flags mask. */
+
+/* Tunnel information is in userspace datapath format. */
+#define FLOW_TNL_F_UDPIF (1 << 4)
+
+static inline bool ipv6_addr_is_set(const struct in6_addr *addr);
+
+static inline bool
+flow_tnl_dst_is_set(const struct flow_tnl *tnl)
+{
+ return tnl->ip_dst || ipv6_addr_is_set(&tnl->ipv6_dst);
+}
+
+struct in6_addr flow_tnl_dst(const struct flow_tnl *tnl);
+struct in6_addr flow_tnl_src(const struct flow_tnl *tnl);
+
+/* Returns an offset to 'src' covering all the meaningful fields in 'src'. */
+static inline size_t
+flow_tnl_size(const struct flow_tnl *src)
+{
+ if (!flow_tnl_dst_is_set(src)) {
+ /* Covers ip_dst and ipv6_dst only. */
+ return offsetof(struct flow_tnl, ip_src);
+ }
+ if (src->flags & FLOW_TNL_F_UDPIF) {
+ /* Datapath format, cover all options we have. */
+ return offsetof(struct flow_tnl, metadata.opts)
+ + src->metadata.present.len;
+ }
+ if (!src->metadata.present.map) {
+ /* No TLVs, opts is irrelevant. */
+ return offsetof(struct flow_tnl, metadata.opts);
+ }
+ /* Have decoded TLVs, opts is relevant. */
+ return sizeof *src;
+}
+
+/* Copy flow_tnl, but avoid copying unused portions of tun_metadata. Unused
+ * data in 'dst' is NOT cleared, so this must not be used in cases where the
+ * uninitialized portion may be hashed over. */
+static inline void
+flow_tnl_copy__(struct flow_tnl *dst, const struct flow_tnl *src)
+{
+ memcpy(dst, src, flow_tnl_size(src));
+}
+
+static inline bool
+flow_tnl_equal(const struct flow_tnl *a, const struct flow_tnl *b)
+{
+ size_t a_size = flow_tnl_size(a);
+
+ return a_size == flow_tnl_size(b) && !memcmp(a, b, a_size);
+}
+
+/* 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. */
+ uint32_t skb_priority; /* Packet priority for QoS. */
+ uint32_t pkt_mark; /* Packet mark. */
+ uint16_t ct_state; /* Connection state. */
+ uint16_t ct_zone; /* Connection zone. */
+ uint32_t ct_mark; /* Connection mark. */
+ ovs_u128 ct_label; /* Connection label. */
+ union flow_in_port in_port; /* Input port. */
+ struct flow_tnl tunnel; /* Encapsulating tunnel parameters. Note that
+ * if 'ip_dst' == 0, the rest of the fields may
+ * be uninitialized. */
+};
+
+static inline void
+pkt_metadata_init(struct pkt_metadata *md, odp_port_t port)
+{
+ /* It can be expensive to zero out all of the tunnel metadata. However,
+ * we can just zero out ip_dst and the rest of the data will never be
+ * looked at. */
+ memset(md, 0, offsetof(struct pkt_metadata, in_port));
+ md->tunnel.ip_dst = 0;
+ md->tunnel.ipv6_dst = in6addr_any;
+
+ md->in_port.odp_port = port;
+}
+
+/* This function prefetches the cachelines touched by pkt_metadata_init()
+ * For performance reasons the two functions should be kept in sync. */
+static inline void
+pkt_metadata_prefetch_init(struct pkt_metadata *md)
+{
+ ovs_prefetch_range(md, offsetof(struct pkt_metadata, tunnel.ip_src));
+}
+
bool dpid_from_string(const char *s, uint64_t *dpidp);
#define ETH_ADDR_LEN 6
-static const uint8_t eth_addr_broadcast[ETH_ADDR_LEN] OVS_UNUSED
- = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+static const struct eth_addr eth_addr_broadcast 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, 0x00 };
+static const struct eth_addr eth_addr_exact OVS_UNUSED
+ = { { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } } };
-static const uint8_t eth_addr_lacp[ETH_ADDR_LEN] OVS_UNUSED
- = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x02 };
+static const struct eth_addr eth_addr_zero OVS_UNUSED
+ = { { { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } } };
-static inline bool eth_addr_is_broadcast(const uint8_t ea[6])
+static const struct eth_addr eth_addr_stp OVS_UNUSED
+ = { { { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x00 } } };
+
+static const struct eth_addr eth_addr_lacp OVS_UNUSED
+ = { { { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x02 } } };
+
+static const struct eth_addr eth_addr_bfd OVS_UNUSED
+ = { { { 0x00, 0x23, 0x20, 0x00, 0x00, 0x01 } } };
+
+static inline bool eth_addr_is_broadcast(const struct eth_addr a)
{
- return (ea[0] & ea[1] & ea[2] & ea[3] & ea[4] & ea[5]) == 0xff;
+ return (a.be16[0] & a.be16[1] & a.be16[2]) == htons(0xffff);
}
-static inline bool eth_addr_is_multicast(const uint8_t ea[6])
+static inline bool eth_addr_is_multicast(const struct eth_addr a)
{
- return ea[0] & 1;
+ return a.ea[0] & 1;
}
-static inline bool eth_addr_is_local(const uint8_t ea[6])
+
+static inline bool eth_addr_is_local(const struct eth_addr a)
{
/* Local if it is either a locally administered address or a Nicira random
* address. */
- return ea[0] & 2
- || (ea[0] == 0x00 && ea[1] == 0x23 && ea[2] == 0x20 && ea[3] & 0x80);
+ return a.ea[0] & 2
+ || (a.be16[0] == htons(0x0023)
+ && (a.be16[1] & htons(0xff80)) == htons(0x2080));
}
-static inline bool eth_addr_is_zero(const uint8_t ea[6])
+static inline bool eth_addr_is_zero(const struct eth_addr a)
{
- return !(ea[0] | ea[1] | ea[2] | ea[3] | ea[4] | ea[5]);
+ return !(a.be16[0] | a.be16[1] | a.be16[2]);
}
-static inline int eth_mask_is_exact(const uint8_t ea[ETH_ADDR_LEN])
+static inline int eth_mask_is_exact(const struct eth_addr a)
{
- return (ea[0] & ea[1] & ea[2] & ea[3] & ea[4] & ea[5]) == 0xff;
+ return (a.be16[0] & a.be16[1] & a.be16[2]) == htons(0xffff);
}
-static inline int eth_addr_compare_3way(const uint8_t a[ETH_ADDR_LEN],
- const uint8_t b[ETH_ADDR_LEN])
+static inline int eth_addr_compare_3way(const struct eth_addr a,
+ const struct eth_addr b)
{
- return memcmp(a, b, ETH_ADDR_LEN);
+ return memcmp(&a, &b, sizeof a);
}
-static inline bool eth_addr_equals(const uint8_t a[ETH_ADDR_LEN],
- const uint8_t b[ETH_ADDR_LEN])
+
+static inline bool eth_addr_equals(const struct eth_addr a,
+ const struct eth_addr b)
{
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])
+
+static inline bool eth_addr_equal_except(const struct eth_addr a,
+ const struct eth_addr b,
+ const struct eth_addr mask)
{
- 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]));
+ return !(((a.be16[0] ^ b.be16[0]) & mask.be16[0])
+ || ((a.be16[1] ^ b.be16[1]) & mask.be16[1])
+ || ((a.be16[2] ^ b.be16[2]) & mask.be16[2]));
}
-static inline uint64_t eth_addr_to_uint64(const uint8_t ea[ETH_ADDR_LEN])
+
+static inline uint64_t eth_addr_to_uint64(const struct eth_addr ea)
{
- return (((uint64_t) ea[0] << 40)
- | ((uint64_t) ea[1] << 32)
- | ((uint64_t) ea[2] << 24)
- | ((uint64_t) ea[3] << 16)
- | ((uint64_t) ea[4] << 8)
- | ea[5]);
+ return (((uint64_t) ntohs(ea.be16[0]) << 32)
+ | ((uint64_t) ntohs(ea.be16[1]) << 16)
+ | ntohs(ea.be16[2]));
}
-static inline void eth_addr_from_uint64(uint64_t x, uint8_t ea[ETH_ADDR_LEN])
+
+static inline uint64_t eth_addr_vlan_to_uint64(const struct eth_addr ea,
+ uint16_t vlan)
{
- ea[0] = x >> 40;
- ea[1] = x >> 32;
- ea[2] = x >> 24;
- ea[3] = x >> 16;
- ea[4] = x >> 8;
- ea[5] = x;
+ return (((uint64_t)vlan << 48) | eth_addr_to_uint64(ea));
}
-static inline void eth_addr_mark_random(uint8_t ea[ETH_ADDR_LEN])
+
+static inline void eth_addr_from_uint64(uint64_t x, struct eth_addr *ea)
{
- ea[0] &= ~1; /* Unicast. */
- ea[0] |= 2; /* Private. */
+ ea->be16[0] = htons(x >> 32);
+ ea->be16[1] = htons((x & 0xFFFF0000) >> 16);
+ ea->be16[2] = htons(x & 0xFFFF);
}
-static inline void eth_addr_random(uint8_t ea[ETH_ADDR_LEN])
+
+static inline struct eth_addr eth_addr_invert(const struct eth_addr src)
{
- random_bytes(ea, ETH_ADDR_LEN);
+ struct eth_addr dst;
+
+ for (int i = 0; i < ARRAY_SIZE(src.be16); i++) {
+ dst.be16[i] = ~src.be16[i];
+ }
+
+ return dst;
+}
+
+static inline void eth_addr_mark_random(struct eth_addr *ea)
+{
+ ea->ea[0] &= ~1; /* Unicast. */
+ ea->ea[0] |= 2; /* Private. */
+}
+
+static inline void eth_addr_random(struct eth_addr *ea)
+{
+ random_bytes((uint8_t *)ea, sizeof *ea);
eth_addr_mark_random(ea);
}
-static inline void eth_addr_nicira_random(uint8_t ea[ETH_ADDR_LEN])
+
+static inline void eth_addr_nicira_random(struct eth_addr *ea)
{
eth_addr_random(ea);
/* Set the OUI to the Nicira one. */
- ea[0] = 0x00;
- ea[1] = 0x23;
- ea[2] = 0x20;
+ ea->ea[0] = 0x00;
+ ea->ea[1] = 0x23;
+ ea->ea[2] = 0x20;
/* Set the top bit to indicate random Nicira address. */
- ea[3] |= 0x80;
+ ea->ea[3] |= 0x80;
+}
+static inline uint32_t hash_mac(const struct eth_addr ea,
+ const uint16_t vlan, const uint32_t basis)
+{
+ 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_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 *);
+bool eth_addr_is_reserved(const struct eth_addr);
+bool eth_addr_from_string(const char *, struct eth_addr *);
-uint16_t eth_mpls_depth(const struct ofpbuf *packet);
+void compose_rarp(struct dp_packet *, const struct eth_addr);
-void set_ethertype(struct ofpbuf *packet, ovs_be16 eth_type);
+void eth_push_vlan(struct dp_packet *, ovs_be16 tpid, ovs_be16 tci);
+void eth_pop_vlan(struct dp_packet *);
-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]);
+const char *eth_from_hex(const char *hex, struct dp_packet **packetp);
+void eth_format_masked(const struct eth_addr ea,
+ const struct eth_addr *mask, struct ds *s);
-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(struct dp_packet *, ovs_be32 label);
+void push_mpls(struct dp_packet *packet, ovs_be16 ethtype, ovs_be32 lse);
+void pop_mpls(struct dp_packet *, 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);
/* Example:
*
- * uint8_t mac[ETH_ADDR_LEN];
+ * struct eth_addr mac;
* [...]
* printf("The Ethernet address is "ETH_ADDR_FMT"\n", ETH_ADDR_ARGS(mac));
*
*/
#define ETH_ADDR_FMT \
"%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8
-#define ETH_ADDR_ARGS(ea) \
- (ea)[0], (ea)[1], (ea)[2], (ea)[3], (ea)[4], (ea)[5]
+#define ETH_ADDR_ARGS(EA) ETH_ADDR_BYTES_ARGS((EA).ea)
+#define ETH_ADDR_BYTES_ARGS(EAB) \
+ (EAB)[0], (EAB)[1], (EAB)[2], (EAB)[3], (EAB)[4], (EAB)[5]
+#define ETH_ADDR_STRLEN 17
/* Example:
*
* char *string = "1 00:11:22:33:44:55 2";
- * uint8_t mac[ETH_ADDR_LEN];
+ * struct eth_addr mac;
* 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_ADDR_SCAN_ARGS(EA) \
+ &(EA).ea[0], &(EA).ea[1], &(EA).ea[2], &(EA).ea[3], &(EA).ea[4], &(EA).ea[5]
#define ETH_TYPE_IP 0x0800
#define ETH_TYPE_ARP 0x0806
+#define ETH_TYPE_TEB 0x6558
#define ETH_TYPE_VLAN_8021Q 0x8100
#define ETH_TYPE_VLAN ETH_TYPE_VLAN_8021Q
#define ETH_TYPE_VLAN_8021AD 0x88a8
eth_type == htons(ETH_TYPE_MPLS_MCAST);
}
+static inline bool eth_type_vlan(ovs_be16 eth_type)
+{
+ return eth_type == htons(ETH_TYPE_VLAN_8021Q) ||
+ eth_type == htons(ETH_TYPE_VLAN_8021AD);
+}
+
+
/* Minimum value for an Ethernet type. Values below this are IEEE 802.2 frame
* lengths. */
#define ETH_TYPE_MIN 0x600
#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];
+ struct eth_addr eth_dst;
+ struct eth_addr eth_src;
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));
+/* LLC field values used for STP frames. */
+#define STP_LLC_SSAP 0x42
+#define STP_LLC_DSAP 0x42
+#define STP_LLC_CNTL 0x03
+
#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];
+ struct eth_addr veth_dst;
+ struct eth_addr veth_src;
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 */
#define MPLS_HLEN 4
struct mpls_hdr {
- ovs_be32 mpls_lse;
+ ovs_16aligned_be32 mpls_lse;
};
BUILD_ASSERT_DECL(MPLS_HLEN == sizeof(struct mpls_hdr));
* 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. */
{
return (ip & htonl(0xf0000000)) == htonl(0xe0000000);
}
+static inline bool
+ip_is_local_multicast(ovs_be32 ip)
+{
+ return (ip & htonl(0xffffff00)) == htonl(0xe0000000);
+}
int ip_count_cidr_bits(ovs_be32 netmask);
void ip_format_masked(ovs_be32 ip, ovs_be32 mask, struct ds *);
+bool ip_parse(const char *s, ovs_be32 *ip);
+char *ip_parse_masked(const char *s, ovs_be32 *ip, ovs_be32 *mask)
+ OVS_WARN_UNUSED_RESULT;
+char *ip_parse_cidr(const char *s, ovs_be32 *ip, unsigned int *plen)
+ OVS_WARN_UNUSED_RESULT;
+char *ip_parse_masked_len(const char *s, int *n, ovs_be32 *ip, ovs_be32 *mask)
+ OVS_WARN_UNUSED_RESULT;
+char *ip_parse_cidr_len(const char *s, int *n, ovs_be32 *ip,
+ unsigned int *plen)
+ OVS_WARN_UNUSED_RESULT;
#define IP_VER(ip_ihl_ver) ((ip_ihl_ver) >> 4)
#define IP_IHL(ip_ihl_ver) ((ip_ihl_ver) & 15)
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));
#define ICMP_HEADER_LEN 8
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 IGMP_HEADER_LEN 8
+struct igmp_header {
+ uint8_t igmp_type;
+ uint8_t igmp_code;
+ ovs_be16 igmp_csum;
+ ovs_16aligned_be32 group;
+};
+BUILD_ASSERT_DECL(IGMP_HEADER_LEN == sizeof(struct igmp_header));
+
+#define IGMPV3_HEADER_LEN 8
+struct igmpv3_header {
+ uint8_t type;
+ uint8_t rsvr1;
+ ovs_be16 csum;
+ ovs_be16 rsvr2;
+ ovs_be16 ngrp;
+};
+BUILD_ASSERT_DECL(IGMPV3_HEADER_LEN == sizeof(struct igmpv3_header));
+
+#define IGMPV3_RECORD_LEN 8
+struct igmpv3_record {
+ uint8_t type;
+ uint8_t aux_len;
+ ovs_be16 nsrcs;
+ ovs_16aligned_be32 maddr;
+};
+BUILD_ASSERT_DECL(IGMPV3_RECORD_LEN == sizeof(struct igmpv3_record));
+
+#define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* From RFC1112 */
+#define IGMP_HOST_MEMBERSHIP_REPORT 0x12 /* Ditto */
+#define IGMPV2_HOST_MEMBERSHIP_REPORT 0x16 /* V2 version of 0x12 */
+#define IGMP_HOST_LEAVE_MESSAGE 0x17
+#define IGMPV3_HOST_MEMBERSHIP_REPORT 0x22 /* V3 version of 0x12 */
+
+/*
+ * IGMPv3 and MLDv2 use the same codes.
+ */
+#define IGMPV3_MODE_IS_INCLUDE 1
+#define IGMPV3_MODE_IS_EXCLUDE 2
+#define IGMPV3_CHANGE_TO_INCLUDE_MODE 3
+#define IGMPV3_CHANGE_TO_EXCLUDE_MODE 4
+#define IGMPV3_ALLOW_NEW_SOURCES 5
+#define IGMPV3_BLOCK_OLD_SOURCES 6
+
+#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;
};
BUILD_ASSERT_DECL(TCP_HEADER_LEN == sizeof(struct tcp_header));
+/* Connection states */
+enum {
+ CS_NEW_BIT = 0,
+ CS_ESTABLISHED_BIT = 1,
+ CS_RELATED_BIT = 2,
+ CS_REPLY_DIR_BIT = 3,
+ CS_INVALID_BIT = 4,
+ CS_TRACKED_BIT = 5,
+ CS_SRC_NAT_BIT = 6,
+ CS_DST_NAT_BIT = 7,
+};
+
+enum {
+ CS_NEW = (1 << CS_NEW_BIT),
+ CS_ESTABLISHED = (1 << CS_ESTABLISHED_BIT),
+ CS_RELATED = (1 << CS_RELATED_BIT),
+ CS_REPLY_DIR = (1 << CS_REPLY_DIR_BIT),
+ CS_INVALID = (1 << CS_INVALID_BIT),
+ CS_TRACKED = (1 << CS_TRACKED_BIT),
+ CS_SRC_NAT = (1 << CS_SRC_NAT_BIT),
+ CS_DST_NAT = (1 << CS_DST_NAT_BIT),
+};
+
+/* Undefined connection state bits. */
+#define CS_SUPPORTED_MASK (CS_NEW | CS_ESTABLISHED | CS_RELATED \
+ | CS_INVALID | CS_REPLY_DIR | CS_TRACKED \
+ | CS_SRC_NAT | CS_DST_NAT)
+#define CS_UNSUPPORTED_MASK (~(uint32_t)CS_SUPPORTED_MASK)
+
#define ARP_HRD_ETHERNET 1
#define ARP_PRO_IP 0x0800
#define ARP_OP_REQUEST 1
ovs_be16 ar_op; /* Opcode. */
/* Ethernet+IPv4 specific members. */
- uint8_t ar_sha[ETH_ADDR_LEN]; /* Sender hardware address. */
- 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));
+ struct eth_addr ar_sha; /* Sender hardware address. */
+ ovs_16aligned_be32 ar_spa; /* Sender protocol address. */
+ struct eth_addr ar_tha; /* Target hardware address. */
+ ovs_16aligned_be32 ar_tpa; /* Target protocol address. */
+};
BUILD_ASSERT_DECL(ARP_ETH_HEADER_LEN == sizeof(struct arp_eth_header));
+#define IPV6_HEADER_LEN 40
+
+/* 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;
+};
+
+#define ICMP6_HEADER_LEN 4
+struct icmp6_header {
+ uint8_t icmp6_type;
+ uint8_t icmp6_code;
+ ovs_be16 icmp6_cksum;
+};
+BUILD_ASSERT_DECL(ICMP6_HEADER_LEN == sizeof(struct icmp6_header));
+
+uint32_t packet_csum_pseudoheader6(const struct ovs_16aligned_ip6_hdr *);
+
+/* Neighbor Discovery option field.
+ * ND options are always a multiple of 8 bytes in size. */
+#define ND_OPT_LEN 8
+struct ovs_nd_opt {
+ uint8_t nd_opt_type; /* Values defined in icmp6.h */
+ uint8_t nd_opt_len; /* in units of 8 octets (the size of this struct) */
+ struct eth_addr nd_opt_mac; /* Ethernet address in the case of SLL or TLL options */
+};
+BUILD_ASSERT_DECL(ND_OPT_LEN == sizeof(struct ovs_nd_opt));
+
+/* Like struct nd_msg (from ndisc.h), but whereas that struct requires 32-bit
+ * alignment, this one only requires 16-bit alignment. */
+#define ND_MSG_LEN 24
+struct ovs_nd_msg {
+ struct icmp6_header icmph;
+ ovs_16aligned_be32 rco_flags;
+ union ovs_16aligned_in6_addr target;
+ struct ovs_nd_opt options[0];
+};
+BUILD_ASSERT_DECL(ND_MSG_LEN == sizeof(struct ovs_nd_msg));
+
+/*
+ * Use the same struct for MLD and MLD2, naming members as the defined fields in
+ * in the corresponding version of the protocol, though they are reserved in the
+ * other one.
+ */
+#define MLD_HEADER_LEN 8
+struct mld_header {
+ uint8_t type;
+ uint8_t code;
+ ovs_be16 csum;
+ ovs_be16 mrd;
+ ovs_be16 ngrp;
+};
+BUILD_ASSERT_DECL(MLD_HEADER_LEN == sizeof(struct mld_header));
+
+#define MLD2_RECORD_LEN 20
+struct mld2_record {
+ uint8_t type;
+ uint8_t aux_len;
+ ovs_be16 nsrcs;
+ union ovs_16aligned_in6_addr maddr;
+};
+BUILD_ASSERT_DECL(MLD2_RECORD_LEN == sizeof(struct mld2_record));
+
+#define MLD_QUERY 130
+#define MLD_REPORT 131
+#define MLD_DONE 132
+#define MLD2_REPORT 143
+
/* 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) {
* ...
* }
#define IN6ADDR_EXACT_INIT { { { 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, \
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff } } }
+extern const struct in6_addr in6addr_all_hosts;
+#define IN6ADDR_ALL_HOSTS_INIT { { { 0xff,0x02,0x00,0x00,0x00,0x00,0x00,0x00, \
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01 } } }
+
static inline bool ipv6_addr_equals(const struct in6_addr *a,
const struct in6_addr *b)
{
return ipv6_addr_equals(mask, &in6addr_exact);
}
+static inline bool ipv6_is_all_hosts(const struct in6_addr *addr) {
+ return ipv6_addr_equals(addr, &in6addr_all_hosts);
+}
+
+static inline bool ipv6_addr_is_set(const struct in6_addr *addr) {
+ return !ipv6_addr_equals(addr, &in6addr_any);
+}
+
+static inline bool ipv6_addr_is_multicast(const struct in6_addr *ip) {
+ return ip->s6_addr[0] == 0xff;
+}
+
+static inline struct in6_addr
+in6_addr_mapped_ipv4(ovs_be32 ip4)
+{
+ struct in6_addr ip6 = { .s6_addr = { [10] = 0xff, [11] = 0xff } };
+ memcpy(&ip6.s6_addr[12], &ip4, 4);
+ return ip6;
+}
+
+static inline void
+in6_addr_set_mapped_ipv4(struct in6_addr *ip6, ovs_be32 ip4)
+{
+ *ip6 = in6_addr_mapped_ipv4(ip4);
+}
+
+static inline ovs_be32
+in6_addr_get_mapped_ipv4(const struct in6_addr *addr)
+{
+ union ovs_16aligned_in6_addr *taddr = (void *) addr;
+ if (IN6_IS_ADDR_V4MAPPED(addr)) {
+ return get_16aligned_be32(&taddr->be32[3]);
+ } else {
+ return INADDR_ANY;
+ }
+}
+
+static inline void
+in6_addr_solicited_node(struct in6_addr *addr, const struct in6_addr *ip6)
+{
+ union ovs_16aligned_in6_addr *taddr = (void *) addr;
+ memset(taddr->be16, 0, sizeof(taddr->be16));
+ taddr->be16[0] = htons(0xff02);
+ taddr->be16[5] = htons(0x1);
+ taddr->be16[6] = htons(0xff00);
+ memcpy(&addr->s6_addr[13], &ip6->s6_addr[13], 3);
+}
+
+static inline void
+ipv6_multicast_to_ethernet(struct eth_addr *eth, const struct in6_addr *ip6)
+{
+ eth->ea[0] = 0x33;
+ eth->ea[1] = 0x33;
+ eth->ea[2] = ip6->s6_addr[12];
+ eth->ea[3] = ip6->s6_addr[13];
+ eth->ea[4] = ip6->s6_addr[14];
+ eth->ea[5] = ip6->s6_addr[15];
+}
+
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);
-}
+/* Tunnel header */
+
+/* GRE protocol header */
+struct gre_base_hdr {
+ ovs_be16 flags;
+ ovs_be16 protocol;
+};
-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);
+#define GRE_CSUM 0x8000
+#define GRE_ROUTING 0x4000
+#define GRE_KEY 0x2000
+#define GRE_SEQ 0x1000
+#define GRE_STRICT 0x0800
+#define GRE_REC 0x0700
+#define GRE_FLAGS 0x00F8
+#define GRE_VERSION 0x0007
+
+/* VXLAN protocol header */
+struct vxlanhdr {
+ ovs_16aligned_be32 vx_flags;
+ ovs_16aligned_be32 vx_vni;
+};
+
+#define VXLAN_FLAGS 0x08000000 /* struct vxlanhdr.vx_flags required value. */
+
+void ipv6_format_addr(const struct in6_addr *addr, struct ds *);
+void ipv6_format_addr_bracket(const struct in6_addr *addr, struct ds *,
+ bool bracket);
+void ipv6_format_mapped(const struct in6_addr *addr, struct ds *);
+void ipv6_format_masked(const struct in6_addr *addr,
+ const struct in6_addr *mask, struct ds *);
+const char * ipv6_string_mapped(char *addr_str, const struct in6_addr *addr);
struct in6_addr ipv6_addr_bitand(const struct in6_addr *src,
const struct in6_addr *mask);
struct in6_addr ipv6_create_mask(int mask);
int ipv6_count_cidr_bits(const struct in6_addr *netmask);
bool ipv6_is_cidr(const struct in6_addr *netmask);
-void *eth_compose(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN],
- const uint8_t eth_src[ETH_ADDR_LEN], uint16_t eth_type,
+bool ipv6_parse(const char *s, struct in6_addr *ip);
+char *ipv6_parse_masked(const char *s, struct in6_addr *ipv6,
+ struct in6_addr *mask);
+char *ipv6_parse_cidr(const char *s, struct in6_addr *ip, unsigned int *plen)
+ OVS_WARN_UNUSED_RESULT;
+char *ipv6_parse_masked_len(const char *s, int *n, struct in6_addr *ipv6,
+ struct in6_addr *mask);
+char *ipv6_parse_cidr_len(const char *s, int *n, struct in6_addr *ip,
+ unsigned int *plen)
+ OVS_WARN_UNUSED_RESULT;
+
+void *eth_compose(struct dp_packet *, const struct eth_addr eth_dst,
+ const struct eth_addr eth_src, uint16_t eth_type,
size_t size);
-void *snap_compose(struct ofpbuf *, const uint8_t eth_dst[ETH_ADDR_LEN],
- const uint8_t eth_src[ETH_ADDR_LEN],
+void *snap_compose(struct dp_packet *, const struct eth_addr eth_dst,
+ const struct eth_addr eth_src,
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,
+void packet_set_ipv4(struct dp_packet *, 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],
+void packet_set_ipv6(struct dp_packet *, 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);
+void packet_set_tcp_port(struct dp_packet *, ovs_be16 src, ovs_be16 dst);
+void packet_set_udp_port(struct dp_packet *, ovs_be16 src, ovs_be16 dst);
+void packet_set_sctp_port(struct dp_packet *, ovs_be16 src, ovs_be16 dst);
+void packet_set_icmp(struct dp_packet *, uint8_t type, uint8_t code);
+void packet_set_nd(struct dp_packet *, const ovs_be32 target[4],
+ const struct eth_addr sll, const struct eth_addr tll);
+
+void packet_format_tcp_flags(struct ds *, uint16_t);
+const char *packet_tcp_flag_to_string(uint32_t flag);
+void compose_arp(struct dp_packet *, uint16_t arp_op,
+ const struct eth_addr arp_sha,
+ const struct eth_addr arp_tha, bool broadcast,
+ ovs_be32 arp_spa, ovs_be32 arp_tpa);
+void compose_nd(struct dp_packet *, const struct eth_addr eth_src,
+ struct in6_addr *, struct in6_addr *);
+uint32_t packet_csum_pseudoheader(const struct ip_header *);
#endif /* packets.h */
projects / cascardo / ovs.git / blobdiff