/* Reconfigures ovsdb-server based on information in the database. */
static void
reconfigure_from_db(struct ovsdb_jsonrpc_server *jsonrpc,
const struct ovsdb *db, struct shash *remotes)
{
struct shash resolved_remotes;
struct shash_node *node;
/* Configure remotes. */
shash_init(&resolved_remotes);
SHASH_FOR_EACH (node, remotes) {
const char *name = node->name;
if (!strncmp(name, "db:", 3)) {
query_db_remotes(name, db, &resolved_remotes);
} else {
shash_add_once(&resolved_remotes, name, NULL);
}
}
ovsdb_jsonrpc_server_set_remotes(jsonrpc, &resolved_remotes);
shash_destroy(&resolved_remotes);
#if HAVE_OPENSSL
/* Configure SSL. */
stream_ssl_set_key_and_cert(query_db_string(db, private_key_file),
query_db_string(db, certificate_file));
stream_ssl_set_ca_cert_file(query_db_string(db, ca_cert_file),
bootstrap_ca_cert);
#endif
}
static void
create_port_groups(struct shash *port_groups)
{
shash_init(port_groups);
static const char *const pg1[] = {
"lsp1", "lsp2", "lsp3",
};
static const char *const pg2[] = { NULL };
expr_const_sets_add(port_groups, "pg1", pg1, 3, false);
expr_const_sets_add(port_groups, "pg_empty", pg2, 0, false);
}
static void
create_addr_sets(struct shash *addr_sets)
{
shash_init(addr_sets);
static const char *const addrs1[] = {
"10.0.0.1", "10.0.0.2", "10.0.0.3",
};
static const char *const addrs2[] = {
"::1", "::2", "::3",
};
static const char *const addrs3[] = {
"00:00:00:00:00:01", "00:00:00:00:00:02", "00:00:00:00:00:03",
};
static const char *const addrs4[] = { NULL };
expr_const_sets_add(addr_sets, "set1", addrs1, 3, true);
expr_const_sets_add(addr_sets, "set2", addrs2, 3, true);
expr_const_sets_add(addr_sets, "set3", addrs3, 3, true);
expr_const_sets_add(addr_sets, "set4", addrs4, 0, true);
}
void
ovn_init_symtab(struct shash *symtab)
{
shash_init(symtab);
/* Reserve a pair of registers for the logical inport and outport. A full
* 32-bit register each is bigger than we need, but the expression code
* doesn't yet support string fields that occupy less than a full OXM. */
expr_symtab_add_string(symtab, "inport", MFF_LOG_INPORT, NULL);
expr_symtab_add_string(symtab, "outport", MFF_LOG_OUTPORT, NULL);
/* Logical registers:
* 128-bit xxregs
* 64-bit xregs
* 32-bit regs
*
* The expression language doesn't handle overlapping fields properly
* unless they're formally defined as subfields. It's a little awkward. */
for (int xxi = 0; xxi < MFF_N_LOG_REGS / 4; xxi++) {
char *xxname = xasprintf("xxreg%d", xxi);
expr_symtab_add_field(symtab, xxname, MFF_XXREG0 + xxi, NULL, false);
free(xxname);
}
for (int xi = 0; xi < MFF_N_LOG_REGS / 2; xi++) {
char *xname = xasprintf("xreg%d", xi);
int xxi = xi / 2;
if (xxi < MFF_N_LOG_REGS / 4) {
add_subregister(xname, "xxreg", xxi, 64, 1 - xi % 2, symtab);
} else {
expr_symtab_add_field(symtab, xname, MFF_XREG0 + xi, NULL, false);
}
free(xname);
}
for (int i = 0; i < MFF_N_LOG_REGS; i++) {
char *name = xasprintf("reg%d", i);
int xxi = i / 4;
int xi = i / 2;
if (xxi < MFF_N_LOG_REGS / 4) {
add_subregister(name, "xxreg", xxi, 32, 3 - i % 4, symtab);
} else if (xi < MFF_N_LOG_REGS / 2) {
add_subregister(name, "xreg", xi, 32, 1 - i % 2, symtab);
} else {
expr_symtab_add_field(symtab, name, MFF_REG0 + i, NULL, false);
}
free(name);
}
/* Flags used in logical to physical transformation. */
expr_symtab_add_field(symtab, "flags", MFF_LOG_FLAGS, NULL, false);
char flags_str[16];
snprintf(flags_str, sizeof flags_str, "flags[%d]", MLF_ALLOW_LOOPBACK_BIT);
expr_symtab_add_subfield(symtab, "flags.loopback", NULL, flags_str);
snprintf(flags_str, sizeof flags_str, "flags[%d]",
MLF_FORCE_SNAT_FOR_DNAT_BIT);
expr_symtab_add_subfield(symtab, "flags.force_snat_for_dnat", NULL,
flags_str);
snprintf(flags_str, sizeof flags_str, "flags[%d]",
MLF_FORCE_SNAT_FOR_LB_BIT);
expr_symtab_add_subfield(symtab, "flags.force_snat_for_lb", NULL,
flags_str);
/* Connection tracking state. */
expr_symtab_add_field(symtab, "ct_mark", MFF_CT_MARK, NULL, false);
expr_symtab_add_field(symtab, "ct_label", MFF_CT_LABEL, NULL, false);
expr_symtab_add_subfield(symtab, "ct_label.blocked", NULL, "ct_label[0]");
expr_symtab_add_field(symtab, "ct_state", MFF_CT_STATE, NULL, false);
struct ct_bit {
const char *name;
int bit;
};
static const struct ct_bit bits[] = {
{"trk", CS_TRACKED_BIT},
{"new", CS_NEW_BIT},
{"est", CS_ESTABLISHED_BIT},
{"rel", CS_RELATED_BIT},
{"rpl", CS_REPLY_DIR_BIT},
{"inv", CS_INVALID_BIT},
{"dnat", CS_DST_NAT_BIT},
{"snat", CS_SRC_NAT_BIT},
};
for (const struct ct_bit *b = bits; b < &bits[ARRAY_SIZE(bits)]; b++) {
char *name = xasprintf("ct.%s", b->name);
char *expansion = xasprintf("ct_state[%d]", b->bit);
const char *prereqs = b->bit == CS_TRACKED_BIT ? NULL : "ct.trk";
expr_symtab_add_subfield(symtab, name, prereqs, expansion);
free(expansion);
free(name);
}
/* Data fields. */
expr_symtab_add_field(symtab, "eth.src", MFF_ETH_SRC, NULL, false);
expr_symtab_add_field(symtab, "eth.dst", MFF_ETH_DST, NULL, false);
expr_symtab_add_field(symtab, "eth.type", MFF_ETH_TYPE, NULL, true);
expr_symtab_add_predicate(symtab, "eth.bcast",
"eth.dst == ff:ff:ff:ff:ff:ff");
expr_symtab_add_subfield(symtab, "eth.mcast", NULL, "eth.dst[40]");
expr_symtab_add_field(symtab, "vlan.tci", MFF_VLAN_TCI, NULL, false);
expr_symtab_add_predicate(symtab, "vlan.present", "vlan.tci[12]");
expr_symtab_add_subfield(symtab, "vlan.pcp", "vlan.present",
"vlan.tci[13..15]");
expr_symtab_add_subfield(symtab, "vlan.vid", "vlan.present",
"vlan.tci[0..11]");
expr_symtab_add_predicate(symtab, "ip4", "eth.type == 0x800");
expr_symtab_add_predicate(symtab, "ip6", "eth.type == 0x86dd");
expr_symtab_add_predicate(symtab, "ip", "ip4 || ip6");
expr_symtab_add_field(symtab, "ip.proto", MFF_IP_PROTO, "ip", true);
expr_symtab_add_field(symtab, "ip.dscp", MFF_IP_DSCP_SHIFTED, "ip", false);
expr_symtab_add_field(symtab, "ip.ecn", MFF_IP_ECN, "ip", false);
expr_symtab_add_field(symtab, "ip.ttl", MFF_IP_TTL, "ip", false);
expr_symtab_add_field(symtab, "ip4.src", MFF_IPV4_SRC, "ip4", false);
expr_symtab_add_field(symtab, "ip4.dst", MFF_IPV4_DST, "ip4", false);
expr_symtab_add_predicate(symtab, "ip4.mcast", "ip4.dst[28..31] == 0xe");
expr_symtab_add_predicate(symtab, "icmp4", "ip4 && ip.proto == 1");
expr_symtab_add_field(symtab, "icmp4.type", MFF_ICMPV4_TYPE, "icmp4",
false);
expr_symtab_add_field(symtab, "icmp4.code", MFF_ICMPV4_CODE, "icmp4",
false);
expr_symtab_add_field(symtab, "ip6.src", MFF_IPV6_SRC, "ip6", false);
expr_symtab_add_field(symtab, "ip6.dst", MFF_IPV6_DST, "ip6", false);
expr_symtab_add_field(symtab, "ip6.label", MFF_IPV6_LABEL, "ip6", false);
expr_symtab_add_predicate(symtab, "icmp6", "ip6 && ip.proto == 58");
expr_symtab_add_field(symtab, "icmp6.type", MFF_ICMPV6_TYPE, "icmp6",
true);
expr_symtab_add_field(symtab, "icmp6.code", MFF_ICMPV6_CODE, "icmp6",
true);
expr_symtab_add_predicate(symtab, "icmp", "icmp4 || icmp6");
expr_symtab_add_field(symtab, "ip.frag", MFF_IP_FRAG, "ip", false);
expr_symtab_add_predicate(symtab, "ip.is_frag", "ip.frag[0]");
expr_symtab_add_predicate(symtab, "ip.later_frag", "ip.frag[1]");
expr_symtab_add_predicate(symtab, "ip.first_frag",
"ip.is_frag && !ip.later_frag");
expr_symtab_add_predicate(symtab, "arp", "eth.type == 0x806");
expr_symtab_add_field(symtab, "arp.op", MFF_ARP_OP, "arp", false);
expr_symtab_add_field(symtab, "arp.spa", MFF_ARP_SPA, "arp", false);
expr_symtab_add_field(symtab, "arp.sha", MFF_ARP_SHA, "arp", false);
expr_symtab_add_field(symtab, "arp.tpa", MFF_ARP_TPA, "arp", false);
expr_symtab_add_field(symtab, "arp.tha", MFF_ARP_THA, "arp", false);
expr_symtab_add_predicate(symtab, "nd",
"icmp6.type == {135, 136} && icmp6.code == 0 && ip.ttl == 255");
expr_symtab_add_predicate(symtab, "nd_ns",
"icmp6.type == 135 && icmp6.code == 0 && ip.ttl == 255");
expr_symtab_add_predicate(symtab, "nd_na",
"icmp6.type == 136 && icmp6.code == 0 && ip.ttl == 255");
expr_symtab_add_field(symtab, "nd.target", MFF_ND_TARGET, "nd", false);
expr_symtab_add_field(symtab, "nd.sll", MFF_ND_SLL, "nd_ns", false);
expr_symtab_add_field(symtab, "nd.tll", MFF_ND_TLL, "nd_na", false);
expr_symtab_add_predicate(symtab, "tcp", "ip.proto == 6");
expr_symtab_add_field(symtab, "tcp.src", MFF_TCP_SRC, "tcp", false);
expr_symtab_add_field(symtab, "tcp.dst", MFF_TCP_DST, "tcp", false);
expr_symtab_add_field(symtab, "tcp.flags", MFF_TCP_FLAGS, "tcp", false);
expr_symtab_add_predicate(symtab, "udp", "ip.proto == 17");
expr_symtab_add_field(symtab, "udp.src", MFF_UDP_SRC, "udp", false);
expr_symtab_add_field(symtab, "udp.dst", MFF_UDP_DST, "udp", false);
expr_symtab_add_predicate(symtab, "sctp", "ip.proto == 132");
expr_symtab_add_field(symtab, "sctp.src", MFF_SCTP_SRC, "sctp", false);
expr_symtab_add_field(symtab, "sctp.dst", MFF_SCTP_DST, "sctp", false);
}
// create a new locl_subsystem object
static struct locl_subsystem *
add_subsystem(const struct ovsrec_subsystem *ovsrec_subsys)
{
struct locl_subsystem *result;
int rc;
int idx;
struct ovsdb_idl_txn *txn;
struct ovsrec_temp_sensor **sensor_array;
int sensor_idx;
int sensor_count;
const char *dir;
const YamlThermalInfo *info;
// create and initialize basic subsystem information
VLOG_DBG("Adding new subsystem %s", ovsrec_subsys->name);
result = (struct locl_subsystem *)malloc(sizeof(struct locl_subsystem));
memset(result, 0, sizeof(struct locl_subsystem));
(void)shash_add(&subsystem_data, ovsrec_subsys->name, (void *)result);
result->name = strdup(ovsrec_subsys->name);
result->marked = false;
result->marked = true;
result->parent_subsystem = NULL; // OPS_TODO: find parent subsystem
shash_init(&result->subsystem_sensors);
// use a default if the hw_desc_dir has not been populated
dir = ovsrec_subsys->hw_desc_dir;
if (dir == NULL || strlen(dir) == 0) {
VLOG_ERR("No h/w description directory for subsystem %s",
ovsrec_subsys->name);
return(NULL);
}
// since this is a new subsystem, load all of the hardware description
// information about devices and sensors (just for this subsystem).
// parse sensors and device data for subsystem
rc = yaml_add_subsystem(yaml_handle, ovsrec_subsys->name, dir);
if (rc != 0) {
VLOG_ERR("Error reading h/w description files for subsystem %s",
ovsrec_subsys->name);
return(NULL);
}
// need devices data
rc = yaml_parse_devices(yaml_handle, ovsrec_subsys->name);
if (rc != 0) {
VLOG_ERR("Unable to parse subsystem %s devices file (in %s)",
ovsrec_subsys->name, dir);
return(NULL);
}
// need thermal (sensor) data
rc = yaml_parse_thermal(yaml_handle, ovsrec_subsys->name);
if (rc != 0) {
VLOG_ERR("Unable to parse subsystem %s thermal file (in %s)",
ovsrec_subsys->name, dir);
return(NULL);
}
// get the thermal info, need it for shutdown flag
info = yaml_get_thermal_info(yaml_handle, ovsrec_subsys->name);
result->emergency_shutdown = info->auto_shutdown;
// OPS_TODO: the thermal info has a polling period, but when we
// OPS_TODO: have multiple subsystems, that could be tricky to
// OPS_TODO: implement if there are different polling periods.
// OPS_TODO: For now, hardware the polling period to 5 seconds.
// prepare to add sensors to db
sensor_idx = 0;
sensor_count = yaml_get_sensor_count(yaml_handle, ovsrec_subsys->name);
if (sensor_count <= 0) {
return(NULL);
}
result->valid = true;
// subsystem db object has reference array for sensors
sensor_array = (struct ovsrec_temp_sensor **)malloc(sensor_count * sizeof(struct ovsrec_temp_sensor *));
memset(sensor_array, 0, sensor_count * sizeof(struct ovsrec_temp_sensor *));
txn = ovsdb_idl_txn_create(idl);
VLOG_DBG("There are %d sensors in subsystem %s", sensor_count, ovsrec_subsys->name);
for (idx = 0; idx < sensor_count; idx++) {
const YamlSensor *sensor = yaml_get_sensor(yaml_handle, ovsrec_subsys->name, idx);
struct ovsrec_temp_sensor *ovs_sensor;
char *sensor_name = NULL;
struct locl_sensor *new_sensor;
VLOG_DBG("Adding sensor %d (%s) in subsystem %s",
sensor->number,
sensor->location,
ovsrec_subsys->name);
// create a name for the sensor from the subsystem name and the
// sensor number
asprintf(&sensor_name, "%s-%d", ovsrec_subsys->name, sensor->number);
// allocate and initialize basic sensor information
new_sensor = (struct locl_sensor *)malloc(sizeof(struct locl_sensor));
new_sensor->name = sensor_name;
new_sensor->subsystem = result;
new_sensor->yaml_sensor = sensor;
new_sensor->min = 1000000;
new_sensor->max = -1000000;
new_sensor->temp = 0;
new_sensor->status = SENSOR_STATUS_NORMAL;
new_sensor->fan_speed = SENSOR_FAN_NORMAL;
new_sensor->test_temp = -1; // no test temperature override set
// try to populate sensor information with real data
tempd_read_sensor(new_sensor);
// add sensor to subsystem sensor dictionary
shash_add(&result->subsystem_sensors, sensor_name, (void *)new_sensor);
// add sensor to global sensor dictionary
shash_add(&sensor_data, sensor_name, (void *)new_sensor);
// look for existing Temp_sensor rows
ovs_sensor = lookup_sensor(sensor_name);
if (ovs_sensor == NULL) {
// existing sensor doesn't exist in db, create it
ovs_sensor = ovsrec_temp_sensor_insert(txn);
}
// set initial data
ovsrec_temp_sensor_set_name(ovs_sensor, sensor_name);
ovsrec_temp_sensor_set_status(ovs_sensor,
sensor_status_to_string(new_sensor->status));
ovsrec_temp_sensor_set_temperature(ovs_sensor, new_sensor->temp);
ovsrec_temp_sensor_set_min(ovs_sensor, new_sensor->min);
ovsrec_temp_sensor_set_max(ovs_sensor, new_sensor->max);
ovsrec_temp_sensor_set_fan_state(ovs_sensor,
sensor_speed_to_string(new_sensor->fan_speed));
ovsrec_temp_sensor_set_location(ovs_sensor, sensor->location);
// add sensor to subsystem reference list
sensor_array[sensor_idx++] = ovs_sensor;
}
ovsrec_subsystem_set_temp_sensors(ovsrec_subsys, sensor_array, sensor_count);
// execute transaction
ovsdb_idl_txn_commit_block(txn);
ovsdb_idl_txn_destroy(txn);
free(sensor_array);
return(result);
}
// initialize the subsystem and global sensor dictionaries
static void
init_subsystems(void)
{
shash_init(&subsystem_data);
shash_init(&sensor_data);
}
int
main(int argc, char *argv[])
{
struct ovsdb_idl *idl;
struct ctl_command *commands;
struct shash local_options;
unsigned int seqno;
size_t n_commands;
char *args;
set_program_name(argv[0]);
fatal_ignore_sigpipe();
vlog_set_levels(NULL, VLF_CONSOLE, VLL_WARN);
vlog_set_levels_from_string_assert("reconnect:warn");
sbrec_init();
sbctl_cmd_init();
/* Log our arguments. This is often valuable for debugging systems. */
args = process_escape_args(argv);
VLOG(ctl_might_write_to_db(argv) ? VLL_INFO : VLL_DBG, "Called as %s", args);
/* Parse command line. */
shash_init(&local_options);
parse_options(argc, argv, &local_options);
commands = ctl_parse_commands(argc - optind, argv + optind, &local_options,
&n_commands);
if (timeout) {
time_alarm(timeout);
}
/* Initialize IDL. */
idl = the_idl = ovsdb_idl_create(db, &sbrec_idl_class, false, false);
run_prerequisites(commands, n_commands, idl);
/* Execute the commands.
*
* 'seqno' is the database sequence number for which we last tried to
* execute our transaction. There's no point in trying to commit more than
* once for any given sequence number, because if the transaction fails
* it's because the database changed and we need to obtain an up-to-date
* view of the database before we try the transaction again. */
seqno = ovsdb_idl_get_seqno(idl);
for (;;) {
ovsdb_idl_run(idl);
if (!ovsdb_idl_is_alive(idl)) {
int retval = ovsdb_idl_get_last_error(idl);
ctl_fatal("%s: database connection failed (%s)",
db, ovs_retval_to_string(retval));
}
if (seqno != ovsdb_idl_get_seqno(idl)) {
seqno = ovsdb_idl_get_seqno(idl);
if (do_sbctl(args, commands, n_commands, idl)) {
free(args);
exit(EXIT_SUCCESS);
}
}
if (seqno == ovsdb_idl_get_seqno(idl)) {
ovsdb_idl_wait(idl);
poll_block();
}
}
}
static void
symtab_init(void)
{
shash_init(&symtab);
/* Reserve a pair of registers for the logical inport and outport. A full
* 32-bit register each is bigger than we need, but the expression code
* doesn't yet support string fields that occupy less than a full OXM. */
expr_symtab_add_string(&symtab, "inport", MFF_LOG_INPORT, NULL);
expr_symtab_add_string(&symtab, "outport", MFF_LOG_OUTPORT, NULL);
/* Logical registers. */
#define MFF_LOG_REG(ID) add_logical_register(&symtab, ID);
MFF_LOG_REGS;
#undef MFF_LOG_REG
/* Connection tracking state. */
expr_symtab_add_field(&symtab, "ct_state", MFF_CT_STATE, NULL, false);
char ct_state_str[16];
snprintf(ct_state_str, sizeof ct_state_str, "ct_state[%d]", CS_TRACKED_BIT);
expr_symtab_add_predicate(&symtab, "ct.trk", ct_state_str);
snprintf(ct_state_str, sizeof ct_state_str, "ct_state[%d]", CS_NEW_BIT);
expr_symtab_add_subfield(&symtab, "ct.new", "ct.trk", ct_state_str);
snprintf(ct_state_str, sizeof ct_state_str, "ct_state[%d]", CS_ESTABLISHED_BIT);
expr_symtab_add_subfield(&symtab, "ct.est", "ct.trk", ct_state_str);
snprintf(ct_state_str, sizeof ct_state_str, "ct_state[%d]", CS_RELATED_BIT);
expr_symtab_add_subfield(&symtab, "ct.rel", "ct.trk", ct_state_str);
snprintf(ct_state_str, sizeof ct_state_str, "ct_state[%d]", CS_REPLY_DIR_BIT);
expr_symtab_add_subfield(&symtab, "ct.rpl", "ct.trk", ct_state_str);
snprintf(ct_state_str, sizeof ct_state_str, "ct_state[%d]", CS_INVALID_BIT);
expr_symtab_add_subfield(&symtab, "ct.inv", "ct.trk", ct_state_str);
/* Data fields. */
expr_symtab_add_field(&symtab, "eth.src", MFF_ETH_SRC, NULL, false);
expr_symtab_add_field(&symtab, "eth.dst", MFF_ETH_DST, NULL, false);
expr_symtab_add_field(&symtab, "eth.type", MFF_ETH_TYPE, NULL, true);
expr_symtab_add_predicate(&symtab, "eth.bcast",
"eth.dst == ff:ff:ff:ff:ff:ff");
expr_symtab_add_subfield(&symtab, "eth.mcast", NULL, "eth.dst[40]");
expr_symtab_add_field(&symtab, "vlan.tci", MFF_VLAN_TCI, NULL, false);
expr_symtab_add_predicate(&symtab, "vlan.present", "vlan.tci[12]");
expr_symtab_add_subfield(&symtab, "vlan.pcp", "vlan.present",
"vlan.tci[13..15]");
expr_symtab_add_subfield(&symtab, "vlan.vid", "vlan.present",
"vlan.tci[0..11]");
expr_symtab_add_predicate(&symtab, "ip4", "eth.type == 0x800");
expr_symtab_add_predicate(&symtab, "ip6", "eth.type == 0x86dd");
expr_symtab_add_predicate(&symtab, "ip", "ip4 || ip6");
expr_symtab_add_field(&symtab, "ip.proto", MFF_IP_PROTO, "ip", true);
expr_symtab_add_field(&symtab, "ip.dscp", MFF_IP_DSCP, "ip", false);
expr_symtab_add_field(&symtab, "ip.ecn", MFF_IP_ECN, "ip", false);
expr_symtab_add_field(&symtab, "ip.ttl", MFF_IP_TTL, "ip", false);
expr_symtab_add_field(&symtab, "ip4.src", MFF_IPV4_SRC, "ip4", false);
expr_symtab_add_field(&symtab, "ip4.dst", MFF_IPV4_DST, "ip4", false);
expr_symtab_add_predicate(&symtab, "ip4.mcast", "ip4.dst[28..31] == 0xe");
expr_symtab_add_predicate(&symtab, "icmp4", "ip4 && ip.proto == 1");
expr_symtab_add_field(&symtab, "icmp4.type", MFF_ICMPV4_TYPE, "icmp4",
false);
expr_symtab_add_field(&symtab, "icmp4.code", MFF_ICMPV4_CODE, "icmp4",
false);
expr_symtab_add_field(&symtab, "ip6.src", MFF_IPV6_SRC, "ip6", false);
expr_symtab_add_field(&symtab, "ip6.dst", MFF_IPV6_DST, "ip6", false);
expr_symtab_add_field(&symtab, "ip6.label", MFF_IPV6_LABEL, "ip6", false);
expr_symtab_add_predicate(&symtab, "icmp6", "ip6 && ip.proto == 58");
expr_symtab_add_field(&symtab, "icmp6.type", MFF_ICMPV6_TYPE, "icmp6",
true);
expr_symtab_add_field(&symtab, "icmp6.code", MFF_ICMPV6_CODE, "icmp6",
true);
expr_symtab_add_predicate(&symtab, "icmp", "icmp4 || icmp6");
expr_symtab_add_field(&symtab, "ip.frag", MFF_IP_FRAG, "ip", false);
expr_symtab_add_predicate(&symtab, "ip.is_frag", "ip.frag[0]");
expr_symtab_add_predicate(&symtab, "ip.later_frag", "ip.frag[1]");
expr_symtab_add_predicate(&symtab, "ip.first_frag",
"ip.is_frag && !ip.later_frag");
expr_symtab_add_predicate(&symtab, "arp", "eth.type == 0x806");
expr_symtab_add_field(&symtab, "arp.op", MFF_ARP_OP, "arp", false);
expr_symtab_add_field(&symtab, "arp.spa", MFF_ARP_SPA, "arp", false);
expr_symtab_add_field(&symtab, "arp.sha", MFF_ARP_SHA, "arp", false);
expr_symtab_add_field(&symtab, "arp.tpa", MFF_ARP_TPA, "arp", false);
expr_symtab_add_field(&symtab, "arp.tha", MFF_ARP_THA, "arp", false);
expr_symtab_add_predicate(&symtab, "nd",
"icmp6.type == {135, 136} && icmp6.code == 0");
expr_symtab_add_field(&symtab, "nd.target", MFF_ND_TARGET, "nd", false);
expr_symtab_add_field(&symtab, "nd.sll", MFF_ND_SLL,
"nd && icmp6.type == 135", false);
expr_symtab_add_field(&symtab, "nd.tll", MFF_ND_TLL,
"nd && icmp6.type == 136", false);
expr_symtab_add_predicate(&symtab, "tcp", "ip.proto == 6");
expr_symtab_add_field(&symtab, "tcp.src", MFF_TCP_SRC, "tcp", false);
expr_symtab_add_field(&symtab, "tcp.dst", MFF_TCP_DST, "tcp", false);
expr_symtab_add_field(&symtab, "tcp.flags", MFF_TCP_FLAGS, "tcp", false);
expr_symtab_add_predicate(&symtab, "udp", "ip.proto == 17");
expr_symtab_add_field(&symtab, "udp.src", MFF_UDP_SRC, "udp", false);
expr_symtab_add_field(&symtab, "udp.dst", MFF_UDP_DST, "udp", false);
expr_symtab_add_predicate(&symtab, "sctp", "ip.proto == 132");
expr_symtab_add_field(&symtab, "sctp.src", MFF_SCTP_SRC, "sctp", false);
expr_symtab_add_field(&symtab, "sctp.dst", MFF_SCTP_DST, "sctp", false);
}