mpd_tables.c revision d8233146515b662bacdd285529c8cf8635e1922e
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "mpd_defs.h"
#include "mpd_tables.h"
/*
* Global list of phyints, phyint instances, phyint groups and the anonymous
* group; the latter is initialized in phyint_init().
*/
struct phyint_group *phyint_anongroup;
/*
* Grouplist signature; initialized in phyint_init().
*/
static uint64_t phyint_grouplistsig;
int prefix_len);
/* Initialize any per-file global state. Returns 0 on success, -1 on failure */
int
phyint_init(void)
{
if (track_all_phyints) {
if (phyint_anongroup == NULL)
return (-1);
}
return (0);
}
/* Return the phyint with the given name */
struct phyint *
phyint_lookup(const char *name)
{
break;
}
return (pi);
}
/* Return the phyint instance with the given name and the given family */
struct phyint_instance *
{
return (NULL);
}
static struct phyint_group *
phyint_group_lookup(const char *pg_name)
{
struct phyint_group *pg;
break;
}
return (pg);
}
/*
* Insert the phyint in the linked list of all phyints. If the phyint belongs
* to some group, insert it in the phyint group list.
*/
static void
{
/* Insert the phyint at the head of the 'all phyints' list */
/*
* Insert the phyint at the head of the 'phyint_group members' list
* of the phyint group to which it belongs.
*/
}
/* Insert the phyint instance in the linked list of all phyint instances. */
static void
{
logdebug("phyint_inst_insert(%s %s)\n",
}
/*
* Insert the phyint at the head of the 'all phyint instances' list.
*/
if (phyint_instances != NULL)
}
/*
* Create a new phyint with the given parameters. Also insert it into
* the list of all phyints and the list of phyint group members by calling
* phyint_insert().
*/
static struct phyint *
{
logperror("phyint_create: calloc");
return (NULL);
}
/*
* Record the phyint values. Also insert the phyint into the
* phyint group by calling phyint_insert().
*/
/*
* We optimistically start in the PI_RUNNING state. Later (in
* process_link_state_changes()), we will readjust this to match the
* current state of the link. Further, if test addresses are
* subsequently assigned, we will transition to PI_NOTARGETS and then
* either PI_RUNNING or PI_FAILED, depending on the result of the test
* probes.
*/
/*
* Initialise the link state. The link state is initialised to
* up, so that if the link is down when IPMP starts monitoring
* the interface, it will appear as though there has been a
* transition from the link up to link down. This avoids
* having to treat this situation as a special case.
*/
/*
* Insert the phyint in the list of all phyints, and the
* list of phyint group members
*/
/*
* If we are joining a failed group, mark the interface as
* failed.
*/
if (GROUP_FAILED(pg))
return (pi);
}
/*
* Create a new phyint instance belonging to the phyint 'pi' and address
* family 'af'. Also insert it into the list of all phyint instances by
* calling phyint_inst_insert().
*/
static struct phyint_instance *
{
struct phyint_instance *pii;
logperror("phyint_inst_create: calloc");
return (NULL);
}
/*
* Attach the phyint instance to the phyint.
* Set the back pointers as well
*/
else
/* Insert the phyint instance in the list of all phyint instances. */
return (pii);
}
/*
* Change the state of phyint `pi' to state `state'.
*/
void
{
/*
* To simplify things, some callers always set a given state
* regardless of the previous state of the phyint (e.g., setting
* PI_RUNNING when it's already set). We shouldn't bother
* generating an event or consuming a signature for these, since
* the actual state of the interface is unchanged.
*/
return;
}
/*
* Note that the type of phyint `pi' has changed.
*/
void
{
}
/*
* Insert the phyint group in the linked list of all phyint groups
* at the head of the list
*/
static void
{
if (phyint_groups != NULL)
phyint_groups = pg;
}
/*
* Create a new phyint group called 'name'.
*/
static struct phyint_group *
phyint_group_create(const char *name)
{
struct phyint_group *pg;
logperror("phyint_group_create: calloc");
return (NULL);
}
return (pg);
}
/*
* Change the state of the phyint group `pg' to state `state'.
*/
void
{
switch (state) {
case PG_FAILED:
/*
* We can never know with certainty that a group has
* failed. It is possible that all known targets have
* failed simultaneously, and new targets have come up
* instead. If the targets are routers then router
* discovery will kick in, and we will see the new routers
* thru routing socket messages. But if the targets are
* hosts, we have to discover it by multicast. So flush
* all the host targets. The next probe will send out a
* multicast echo request. If this is a group failure, we
* will still not see any response, otherwise we will
* clear the pg_groupfailed flag after we get
* NUM_PROBE_REPAIRS consecutive unicast replies on any
* phyint.
*/
break;
case PG_RUNNING:
pg->pg_groupfailed = 0;
break;
default:
logerr("phyint_group_chstate: invalid group state %d; "
"aborting\n", state);
abort();
}
(void) phyint_group_state_event(pg);
}
/*
* Create a new phyint instance and initialize it from the values supplied by
* the kernel. Always check for ENXIO before logging any error, because the
* interface could have vanished after completion of SIOCGLIFCONF.
* Return values:
* pointer to the phyint instance on success
* NULL on failure Eg. if the phyint instance is not found in the kernel
*/
struct phyint_instance *
{
int ifsock;
struct phyint_instance *pii;
struct phyint_group *pg;
logdebug("phyint_inst_init_from_k(%s %s)\n",
}
/* Get the socket for doing ioctls */
/*
* Get the interface flags. Ignore loopback and multipoint
* interfaces.
*/
logperror("phyint_inst_init_from_k:"
" ioctl (get flags)");
}
return (NULL);
}
return (NULL);
/*
* Get the ifindex for recording later in our tables, in case we need
* to create a new phyint.
*/
logperror("phyint_inst_init_from_k: "
" ioctl (get lifindex)");
}
return (NULL);
}
/*
* Get the phyint group name of this phyint, from the kernel.
*/
logperror("phyint_inst_init_from_k: "
"ioctl (get group name)");
}
return (NULL);
}
/*
* If the phyint is not part of any group, pg_name is the
* null string. If 'track_all_phyints' is false, there is no
* need to create a phyint.
*/
/*
* If the IFF_FAILED or IFF_OFFLINE flags are set, reset
* them. These flags shouldn't be set if IPMP isn't
* tracking the interface.
*/
logperror("phyint_inst_init_from_k:"
" ioctl (set flags)");
}
}
}
return (NULL);
}
/*
* We need to create a new phyint instance. A phyint instance
* belongs to a phyint, and the phyint belongs to a phyint group.
* So we first lookup the 'parents' and if they don't exist then
* we create them.
*/
logerr("phyint_inst_init_from_k:"
" unable to create group %s\n", pg_name);
return (NULL);
}
}
/*
* Lookup the phyint. If the phyint does not exist create it.
*/
logerr("phyint_inst_init_from_k:"
" unable to create phyint %s\n", pi_name);
if (pg_created)
return (NULL);
}
} else {
/* The phyint exists already. */
/*
* Normally we should see consistent values for the IPv4 and
* IPv6 instances, for phyint properties. If we don't, it
* means things have changed underneath us, and we should
* resync our tables with the kernel. Check whether the
* interface index has changed. If so, it is most likely
* the interface has been unplumbed and replumbed,
* while we are yet to update our tables. Do it now.
*/
if (pg_created)
goto retry;
}
/*
* If the group name seen by the IPv4 and IPv6 instances
* are different, it is most likely the groupname has
* changed, while we are yet to update our tables. Do it now.
*/
if (pg_created)
goto retry;
}
}
/*
* Create a new phyint instance, corresponding to the 'af'
* passed in.
*/
logerr("phyint_inst_init_from_k: unable to create"
if (pi_created) {
/*
* Deleting the phyint will delete the phyint group
* if this is the last phyint in the group.
*/
}
return (NULL);
}
return (pii);
}
/*
* Bind pii_probe_sock to the address associated with pii_probe_logint.
* targets. Do the common part in this function, and complete the
* initializations by calling the protocol specific functions
* phyint_inst_v{4,6}_sockinit() respectively.
*
* Return values: _B_TRUE/_B_FALSE for success or failure respectively.
*/
{
struct phyint_group *pg;
logdebug("phyint_inst_sockinit(%s %s)\n",
}
/*
* If the socket is already bound, close pii_probe_sock
*/
/*
* If the phyint is not part of a named group and track_all_phyints is
* false, simply return.
*/
logdebug("phyint_inst_sockinit: no group\n");
return (_B_FALSE);
}
/*
* Initialize the socket by calling the protocol specific function.
* If it succeeds, add the socket to the poll list.
*/
else
return (_B_TRUE);
/* Something failed, cleanup and return false */
return (_B_FALSE);
}
/*
* IPv6 specific part in initializing the pii_probe_sock. This socket is
*/
static boolean_t
{
int hopcount = 1;
int int_op;
struct sockaddr_in6 testaddr;
/*
* Open a raw socket with ICMPv6 protocol.
*
* Use IPV6_DONTFAILOVER_IF to make sure that probes go out
* on the specified phyint only, and are not subject to load
* balancing. Bind to the src address chosen will ensure that
* the responses are received only on the specified phyint.
*
* Set the hopcount to 1 so that probe packets are not routed.
* Disable multicast loopback. Set the receive filter to
* receive only ICMPv6 echo replies.
*/
if (pii->pii_probe_sock < 0) {
return (_B_FALSE);
}
sizeof (testaddr)) < 0) {
return (_B_FALSE);
}
/*
* IPV6_DONTFAILOVER_IF option takes precedence over setting
* IP_MULTICAST_IF. So we don't set IPV6_MULTICAST_IF again.
*/
" IPV6_DONTFAILOVER_IF");
return (_B_FALSE);
}
" IPV6_UNICAST_HOPS");
return (_B_FALSE);
}
" IPV6_MULTICAST_HOPS");
return (_B_FALSE);
}
int_op = 0; /* used to turn off option */
" IPV6_MULTICAST_LOOP");
return (_B_FALSE);
}
/*
* Filter out so that we only receive ICMP echo replies
*/
" ICMP6_FILTER");
return (_B_FALSE);
}
/* Enable receipt of ancillary data */
int_op = 1;
" IPV6_RECVHOPLIMIT");
return (_B_FALSE);
}
return (_B_TRUE);
}
/*
* IPv4 specific part in initializing the pii_probe_sock. This socket is
*/
static boolean_t
{
struct sockaddr_in testaddr;
char char_op;
int ttl = 1;
char char_ttl = 1;
/*
* Open a raw socket with ICMPv4 protocol.
*
* Use IP_DONTFAILOVER_IF to make sure that probes go out
* on the specified phyint only, and are not subject to load
* balancing. Bind to the src address chosen will ensure that
* the responses are received only on the specified phyint.
*
* Set the ttl to 1 so that probe packets are not routed.
* Disable multicast loopback.
*/
if (pii->pii_probe_sock < 0) {
return (_B_FALSE);
}
sizeof (testaddr)) < 0) {
return (_B_FALSE);
}
/*
* IP_DONTFAILOVER_IF option takes precedence over setting
* IP_MULTICAST_IF. So we don't set IP_MULTICAST_IF again.
*/
" IP_DONTFAILOVER");
return (_B_FALSE);
}
" IP_TTL");
return (_B_FALSE);
}
char_op = 0; /* used to turn off option */
" IP_MULTICAST_LOOP");
return (_B_FALSE);
}
" IP_MULTICAST_TTL");
return (_B_FALSE);
}
return (_B_TRUE);
}
/*
* Remove the phyint group from the list of 'all phyint groups'
* and free it.
*/
static void
{
/*
* The anonymous group always exists, even when empty.
*/
if (pg == phyint_anongroup)
return;
/*
* The phyint group must be empty, and must not have any phyints.
* The phyint group must be in the list of all phyint groups
*/
else
}
/*
* Extract information from the kernel about the desired phyint.
* Look only for properties of the phyint and not properties of logints.
* Take appropriate action on the changes.
* Return codes:
* PI_OK
* The phyint exists in the kernel and matches our knowledge
* of the phyint.
* PI_DELETED
* The phyint has vanished in the kernel.
* PI_IFINDEX_CHANGED
* The phyint's interface index has changed.
* Ask the caller to delete and recreate the phyint.
* PI_IOCTL_ERROR
* Some ioctl error. Don't change anything.
* PI_GROUP_CHANGED
* The phyint has changed group.
*/
int
{
int ifsock;
logdebug("phyint_inst_update_from_k(%s %s)\n",
}
/*
* Get the ifindex from the kernel, for comparison with the
* value in our tables.
*/
return (PI_DELETED);
} else {
" ioctl (get lifindex)");
return (PI_IOCTL_ERROR);
}
}
/*
* The index has changed. Most likely the interface has
* been unplumbed and replumbed. Ask the caller to take
* appropriate action.
*/
logdebug("phyint_inst_update_from_k:"
" old index %d new index %d\n",
}
return (PI_IFINDEX_CHANGED);
}
/*
* Get the group name from the kernel, for comparison with
* the value in our tables.
*/
return (PI_DELETED);
} else {
" ioctl (get groupname)");
return (PI_IOCTL_ERROR);
}
}
/*
* If the phyint has changed group i.e. if the phyint group name
* returned by the kernel is different, ask the caller to delete
* and recreate the phyint in the right group
*/
/* Groupname has changed */
logdebug("phyint_inst_update_from_k:"
" groupname change\n");
}
return (PI_GROUP_CHANGED);
}
/*
* Get the current phyint flags from the kernel, and determine what
* flags have changed by comparing against our tables. Note that the
* IFF_INACTIVE processing in initifs() relies on this call to ensure
* that IFF_INACTIVE is really still set on the interface.
*/
return (PI_DELETED);
} else {
" ioctl (get flags)");
return (PI_IOCTL_ERROR);
}
}
/*
* If we are in the running and full state, we have
* completed failbacks successfully and we would have
* expected IFF_FAILED to have been clear. That it is
* set means there was a race condition. Some other
* process turned on the IFF_FAILED flag. Since the
* flag setting is not atomic, i.e. a get ioctl followed
* by a set ioctl, and since there is no way to set an
* individual flag bit, this could have occurred.
*/
} else {
/*
* If we are in the failed state, there was a race.
* we have completed failover successfully because our
* state is failed and empty. Some other process turned
* off the IFF_FAILED flag. Same comment as above
*/
}
/* No change in phyint status */
return (PI_OK);
}
/*
* Delete the phyint. Remove it from the list of all phyints, and the
* list of phyint group members. If the group becomes empty, delete the
* group also.
*/
static void
{
/* Both IPv4 and IPv6 phyint instances must have been deleted. */
/*
* The phyint must belong to a group.
*/
/* The phyint must be in the list of all phyints */
/* Remove the phyint from the phyint group list */
/* Phyint is the 1st in the phyint group list */
} else {
}
/* Remove the phyint from the global list of phyints */
/* Phyint is the 1st in the list */
} else {
}
/* Delete the phyint_group if the last phyint has been deleted */
}
/*
* Delete (unlink and free), the phyint instance.
*/
void
{
logdebug("phyint_inst_delete(%s %s)\n",
}
/*
* If the phyint instance has associated probe targets
* delete all the targets
*/
/*
* Delete all the logints associated with this phyint
* instance.
*/
/*
* Close the socket used to send probes to targets from this phyint.
*/
/*
* Phyint instance must be in the list of all phyint instances.
* Remove phyint instance from the global list of phyint instances.
*/
/* Phyint is the 1st in the list */
} else {
}
/*
* Reset the phyint instance pointer in the phyint.
* If this is the last phyint instance (being deleted) on this
* phyint, then delete the phyint.
*/
else
}
static void
{
char abuf[INET6_ADDRSTRLEN];
int most_recent;
int i;
logdebug("pii->pi_phyint NULL can't print\n");
return;
}
logdebug("\nPhyint instance: %s %s index %u state %x flags %llx "
"sock %x in_use %d empty %x full %x\n",
logdebug("\n");
logdebug("pi_targets NULL\n");
} else {
logdebug("pi_target_next NULL\n");
}
} else {
logdebug("pi_rtt_target_next NULL\n");
}
i = most_recent;
do {
logdebug("#%d target %s ", i,
} else {
logdebug("#%d target NULL ", i);
}
i = PROBE_INDEX_PREV(i);
} while (i != most_recent);
}
}
/*
* Lookup a logint based on the logical interface name, on the given
* phyint instance.
*/
static struct logint *
{
logdebug("logint_lookup(%s, %s)\n",
}
break;
}
return (li);
}
/*
* Insert a logint at the head of the list of logints of the given
* phyint instance
*/
static void
{
}
/*
* Create a new named logint, on the specified phyint instance.
*/
static struct logint *
{
logdebug("logint_create(%s %s %s)\n",
}
logperror("logint_create: calloc");
return (NULL);
}
return (li);
}
/*
* Initialize the logint based on the data returned by the kernel.
*/
void
{
int ifsock;
struct in6_addr test_subnet;
struct in6_addr test_subnet_mask;
int test_subnet_len;
struct sockaddr_in6 *sin6;
struct sockaddr_in *sin;
char abuf[INET6_ADDRSTRLEN];
logdebug("logint_init_from_k(%s %s)\n",
}
/* Get the socket for doing ioctls */
/*
* Get the flags from the kernel. Also serves as a check whether
* the logical still exists. If it doesn't exist, no need to proceed
* any further. li_in_use will make the caller clean up the logint
*/
/* Interface may have vanished */
"ioctl (get flags)");
}
return;
}
/*
* Verified the logint exists. Now lookup the logint in our tables.
* If it does not exist, create a new logint.
*/
/*
* Pretend the interface does not exist
* in the kernel
*/
return;
}
}
/*
* Update li->li_flags with the new flags, after saving the old
* value. This is used later to check what flags has changed and
* take any action
*/
/*
* Get the address, prefix, prefixlength and update the logint.
* Check if anything has changed. If the logint used for the
* test address has changed, take suitable action.
*/
/* Interface may have vanished */
}
goto error;
}
} else {
}
" (get dstaddr)");
}
goto error;
}
} else {
}
} else {
/* Interface may have vanished */
" (get subnet)");
}
goto error;
}
} else {
(IPV6_ABITS - IP_ABITS);
}
}
/*
* Also record the OINDEX for completeness. This information is
* not used.
*/
" (get lifoindex)");
}
goto error;
}
/*
* If this is the logint corresponding to the test address used for
* sending probes, then if anything significant has changed we need to
* determine the test address again. We ignore changes to the
* IFF_FAILED and IFF_RUNNING flags since those happen as a matter of
* course.
*/
~(IFF_FAILED | IFF_RUNNING)) != 0 ||
/*
* Something significant that affects the testaddress
* has changed. Redo the testaddress selection later on
* in select_test_ifs(). For now do the cleanup and
* set pii_probe_logint to NULL.
*/
}
}
/* Update the logint with the values obtained from the kernel. */
if (ptp) {
} else {
}
return;
logerr("logint_init_from_k: IGNORED %s %s %s addr %s\n",
}
/*
* Delete (unlink and free) a logint.
*/
void
{
struct phyint_instance *pii;
int af;
char abuf[INET6_ADDRSTRLEN];
logdebug("logint_delete(%s %s %s/%u)\n",
li->li_subnet_len);
}
/* logint must be in the list of logints */
/* Remove the logint from the list of logints */
/* logint is the 1st in the list */
} else {
}
/*
* If this logint is also being used for probing, then close the
* associated socket, if it exists.
*/
}
}
static void
{
char abuf[INET6_ADDRSTRLEN];
int af;
logdebug("\tFlags: %llx in_use %d oifindex %d\n",
}
char *
{
} else {
}
return (abuf);
}
/* Lookup target on its address */
struct target *
{
char abuf[INET6_ADDRSTRLEN];
logdebug("target_lookup(%s %s): addr %s\n",
}
break;
}
return (tg);
}
/*
* Find and return the next active target, for the next probe.
* If no active targets are available, return NULL.
*/
struct target *
{
/*
* Target must be in the list of targets for this phyint
* instance.
*/
/* Return the next active target */
do {
/*
* Go to the next target. If we hit the end,
* reset the ptr to the head
*/
case TG_ACTIVE:
return (tg);
case TG_UNUSED:
/*
* Bubble up the unused target to active
*/
pii->pii_ntargets++;
return (tg);
}
break;
case TG_SLOW:
/*
* Bubble up the slow target to unused
*/
}
break;
case TG_DEAD:
/*
* Bubble up the dead target to slow
*/
}
break;
}
return (NULL);
}
/*
* Select the best available target, that is not already TG_ACTIVE,
* for the caller. The caller will determine whether it wants to
* make the returned target TG_ACTIVE.
* The selection order is as follows.
* 1. pick a TG_UNSED target, if it exists.
* 2. else pick a TG_SLOW target that has recovered, if it exists
* 3. else pick any TG_SLOW target, if it exists
* 4. else pick a TG_DEAD target that has recovered, if it exists
* 5. else pick any TG_DEAD target, if it exists
* 6. else return null
*/
static struct target *
{
case TG_UNUSED:
return (tg);
case TG_SLOW:
slow_recovered = tg;
/*
* Promote the slow_recoverd to unused
*/
} else {
}
break;
case TG_DEAD:
dead_recovered = tg;
/*
* Promote the dead_recoverd to slow
*/
} else {
}
break;
default:
break;
}
}
if (slow_recovered != NULL)
return (slow_recovered);
return (slow);
else if (dead_recovered != NULL)
return (dead_recovered);
else
return (dead);
}
/*
* Some target was deleted. If we don't have even MIN_PROBE_TARGETS
* that are active, pick the next best below.
*/
static void
{
/* We are out of targets */
return;
}
pii->pii_ntargets++;
}
}
}
static struct target *
{
break;
}
return (tg);
}
/*
* Create a default target entry.
*/
void
{
char abuf[INET6_ADDRSTRLEN];
logdebug("target_create(%s %s, %s)\n",
}
/*
* If the test address is not yet initialized, do not add
* any target, since we cannot determine whether the target
* belongs to the same subnet as the test address.
*/
return;
/*
* If there are multiple subnets associated with an interface, then
* add the target to this phyint instance, only if it belongs to the
* same subnet as the test address. The reason is that interface
* routes derived from non-test-addresses i.e. non-IFF_NOFAILOVER
* addresses, will disappear after failover, and the targets will not
* be reachable from this interface.
*/
return;
if (is_router) {
if (!pii->pii_targets_are_routers) {
/*
* Prefer router over hosts. Using hosts is a
* fallback mechanism, hence delete all host
* targets.
*/
}
} else {
/*
* Routers take precedence over hosts. If this
* is a router list and we are trying to add a
* host, just return. If this is a host list
* and if we have sufficient targets, just return
*/
if (pii->pii_targets_are_routers ||
return;
}
}
logperror("target_create: calloc");
return;
}
tg->tg_num_deferred = 0;
/*
* If this is the first target, set 'pii_targets_are_routers'
* The list of targets is either a list of hosts or list or
* routers, but not a mix.
*/
}
} else {
if (pii->pii_ntargets == 0) {
}
pii->pii_ntargets++;
}
/*
* Change state to PI_RUNNING if this phyint instance is capable of
* sending and receiving probes -- that is, if we know of at least 1
* target, and this phyint instance is probe-capable. For more
* details, see the phyint state diagram in mpd_probe.c.
*/
else
}
}
/*
* Add the target address named by `addr' to phyint instance `pii' if it does
* not already exist. If the target is a router, `is_router' should be set to
* B_TRUE.
*/
void
{
return;
/*
* If the target does not exist, create it; target_create() will set
* tg_in_use to true. If it exists already, and it is a router
* target, set tg_in_use to to true, so that init_router_targets()
* won't delete it
*/
else if (is_router)
}
/*
* Insert target at head of linked list of targets for the associated
* phyint instance
*/
static void
{
}
/*
* Delete a target (unlink and free).
*/
void
{
int af;
struct phyint_instance *pii;
struct phyint_instance *pii_other;
char abuf[INET6_ADDRSTRLEN];
logdebug("target_delete(%s %s, %s)\n",
}
/*
* Target must be in the list of targets for this phyint
* instance.
*/
/*
* Reset all references to 'tg' in the probe information
* for this phyint.
*/
/*
* Remove this target from the list of targets of this
* phyint instance.
*/
} else {
}
pii->pii_ntargets--;
/*
* Adjust the next target to probe, if it points to
* to the currently deleted target.
*/
/*
* The number of active targets pii_ntargets == 0 iff
* the next active target pii->pii_target_next == NULL
*/
if (pii->pii_ntargets != 0) {
return;
}
/* At this point, we don't have any active targets. */
if (pii->pii_targets_are_routers) {
/*
* Activate any TG_SLOW or TG_DEAD router targets,
* since we don't have any other targets
*/
if (pii->pii_ntargets != 0) {
return;
}
}
/*
* If we still don't have any active targets, the list must
* must be really empty. There aren't even TG_SLOW or TG_DEAD
* targets. Zero out the probe stats since it will not be
* relevant any longer.
*/
/*
* If there are no targets on both instances,
* go back to PI_NOTARGETS state, since we cannot
* probe this phyint any more. For more details,
* please see phyint state diagram in mpd_probe.c.
*/
if (!PROBE_CAPABLE(pii_other))
}
/*
* Flush the target list of every phyint in the group, if the list
* is a host target list. This is called if group failure is suspected.
* If all targets have failed, multicast will subsequently discover new
* targets. Else it is a group failure.
* Note: This function is a no-op if the list is a router target list.
*/
static void
{
struct phyint_instance *pii;
/*
* Delete all the targets. When the list becomes
* empty, target_delete() will set pii->pii_targets
* to NULL.
*/
}
/*
* Delete all the targets. When the list becomes
* empty, target_delete() will set pii->pii_targets
* to NULL.
*/
}
}
}
/*
* Reset all references to 'target' in the probe info, as this target is
* being deleted. The pr_target field is guaranteed to be non-null if
* pr_status is PR_UNACKED. So we change the pr_status to PR_LOST, so that
* pr_target will not be accessed unconditionally.
*/
static void
{
int i;
for (i = 0; i < PROBE_STATS_COUNT; i++) {
}
}
}
/*
* Clear the probe statistics array.
*/
void
{
/* Reset the next probe index in the probe stats array */
pii->pii_probe_next = 0;
}
static void
{
char abuf[INET6_ADDRSTRLEN];
char buf[128];
char buf2[128];
int af;
int i;
logdebug("Target on %s %s addr %s\n"
"status %d rtt_sa %d rtt_sd %d crtt %d tg_in_use %d\n",
buf[0] = '\0';
for (i = 0; i < tg->tg_num_deferred; i++) {
tg->tg_deferred[i]);
}
}
void
phyint_inst_print_all(void)
{
struct phyint_instance *pii;
}
}
/*
* Convert length for a mask to the mask.
*/
static void
{
int j;
/* Make the 'masklen' leftmost bits one */
}
/*
* Compare two prefixes that have the same prefix length.
* Fails if the prefix length is unreasonable.
*/
static boolean_t
{
int j;
return (_B_FALSE);
return (_B_FALSE);
/* Make the N leftmost bits one */
return (_B_FALSE);
return (_B_TRUE);
}
/*
* Get the number of UP logints (excluding IFF_NOFAILOVERs), on both
* IPv4 and IPv6 put together. The phyint with the least such number
* will be used as the failover destination, if no standby interface is
* available
*/
int
{
struct phyint_instance *pii;
int count = 0;
count++;
}
}
}
count++;
}
}
}
return (count);
}
/*
* Get the phyint instance with the other (IPv4 / IPv6) protocol
*/
struct phyint_instance *
{
else
}
/*
* Post an EC_IPMP sysevent of subclass `subclass' and attributes `nvl'.
* Before sending the event, it prepends the current version of the IPMP
* sysevent API. Returns 0 on success, -1 on failure (in either case,
* `nvl' is freed).
*/
static int
{
/*
* Since sysevents don't work yet in non-global zones, there cannot
* possibly be any consumers yet, so don't bother trying to generate
* them. (Otherwise, we'll spew warnings.)
*/
if (getzoneid() != GLOBAL_ZONEID) {
return (0);
}
if (errno != 0) {
goto failed;
}
goto failed;
}
return (0);
return (-1);
}
/*
* Return the external IPMP state associated with phyint `pi'.
*/
static ipmp_if_state_t
{
case PI_NOTARGETS:
return (IPMP_IF_UNKNOWN);
case PI_OFFLINE:
return (IPMP_IF_OFFLINE);
case PI_FAILED:
return (IPMP_IF_FAILED);
case PI_RUNNING:
return (IPMP_IF_OK);
}
abort();
/* NOTREACHED */
}
/*
* Return the external IPMP interface type associated with phyint `pi'.
*/
static ipmp_if_type_t
{
return (IPMP_IF_STANDBY);
else
return (IPMP_IF_NORMAL);
}
/*
* Return the external IPMP group state associated with phyint group `pg'.
*/
static ipmp_group_state_t
{
}
/*
* Generate an ESC_IPMP_GROUP_STATE sysevent for phyint group `pg'.
* Returns 0 on success, -1 on failure.
*/
static int
{
if (errno != 0) {
logperror("cannot create `group state change' event");
return (-1);
}
if (errno != 0)
goto failed;
if (errno != 0)
goto failed;
if (errno != 0)
goto failed;
logperror("cannot create `group state change' event");
return (-1);
}
/*
* Generate an ESC_IPMP_GROUP_CHANGE sysevent of type `op' for phyint group
* `pg'. Returns 0 on success, -1 on failure.
*/
static int
{
if (errno != 0) {
logperror("cannot create `group change' event");
return (-1);
}
if (errno != 0)
goto failed;
if (errno != 0)
goto failed;
if (errno != 0)
goto failed;
if (errno != 0)
goto failed;
logperror("cannot create `group change' event");
return (-1);
}
/*
* Generate an ESC_IPMP_GROUP_MEMBER_CHANGE sysevent for phyint `pi' in
* group `pg'. Returns 0 on success, -1 on failure.
*/
static int
{
if (errno != 0) {
logperror("cannot create `group member change' event");
return (-1);
}
if (errno != 0)
goto failed;
if (errno != 0)
goto failed;
if (errno != 0)
goto failed;
if (errno != 0)
goto failed;
if (errno != 0)
goto failed;
if (errno != 0)
goto failed;
logperror("cannot create `group member change' event");
return (-1);
}
/*
* Generate an ESC_IPMP_IF_CHANGE sysevent for phyint `pi' in group `pg'.
* Returns 0 on success, -1 on failure.
*/
static int
{
if (errno != 0) {
logperror("cannot create `interface change' event");
return (-1);
}
if (errno != 0)
goto failed;
if (errno != 0)
goto failed;
if (errno != 0)
goto failed;
if (errno != 0)
goto failed;
if (errno != 0)
goto failed;
logperror("cannot create `interface change' event");
return (-1);
}
/*
* Generate a signature for use. The signature is conceptually divided
* into two pieces: a random 16-bit "generation number" and a 48-bit
* monotonically increasing integer. The generation number protects
* against stale updates to entities (e.g., IPMP groups) that have been
* deleted and since recreated.
*/
static uint64_t
gensig(void)
{
static int seeded = 0;
if (seeded == 0) {
seeded++;
}
}
/*
* Store the information associated with group `grname' into a dynamically
* allocated structure pointed to by `*grinfopp'. Returns an IPMP error code.
*/
unsigned int
{
struct phyint_group *pg;
unsigned int nif, i;
return (IPMP_EUNKGROUP);
/*
* Tally up the number of interfaces, allocate an array to hold them,
* and insert their names into the array.
*/
nif++;
}
}
/*
* Store the information associated with interface `ifname' into a dynamically
* allocated structure pointed to by `*ifinfopp'. Returns an IPMP error code.
*/
unsigned int
{
return (IPMP_EUNKIF);
}
/*
* Store the current list of IPMP groups into a dynamically allocated
* structure pointed to by `*grlistpp'. Returns an IPMP error code.
*/
unsigned int
{
struct phyint_group *pg;
char (*groups)[LIFGRNAMSIZ];
unsigned int i, ngroup;
/*
* Tally up the number of groups, allocate an array to hold them, and
* insert their names into the array.
*/
ngroup++;
}
}
/*
* Store a snapshot of the IPMP subsystem into a dynamically allocated
* structure pointed to by `*snapp'. Returns an IPMP error code.
*/
unsigned int
{
unsigned int i;
int retval;
snap = ipmp_snap_create();
return (IPMP_ENOMEM);
/*
* Add group list.
*/
if (retval != IPMP_SUCCESS) {
return (retval);
}
/*
* Add information for each group in the list.
*/
if (retval != IPMP_SUCCESS) {
return (retval);
}
if (retval != IPMP_SUCCESS) {
return (retval);
}
}
/*
* Add information for each configured phyint.
*/
if (retval != IPMP_SUCCESS) {
return (retval);
}
if (retval != IPMP_SUCCESS) {
return (retval);
}
}
return (IPMP_SUCCESS);
}