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Ignore template contexts where appropriate.

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This commit is contained in:
Simon Kelley
2012-12-16 21:52:45 +00:00
parent 7558ecd9ac
commit 6e3dba3fde
2 changed files with 41 additions and 36 deletions
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74
src/radv.c
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@@ -97,15 +97,16 @@ void ra_start_unsolicted(time_t now, struct dhcp_context *context)
if it's not appropriate to advertise those contexts.
This gets re-called on a netlink route-change to re-do the advertisement
and pick up new interfaces */
if (context)
context->ra_time = now;
context->ra_time = now;
else
for (context = daemon->dhcp6; context; context = context->next)
context->ra_time = now + (rand16()/13000); /* range 0 - 5 */
/* re-do frequently for a minute or so, in case the first gets lost. */
ra_short_period_start = now;
if (!(context->flags & CONTEXT_TEMPLATE))
context->ra_time = now + (rand16()/13000); /* range 0 - 5 */
/* re-do frequently for a minute or so, in case the first gets lost. */
ra_short_period_start = now;
}
void icmp6_packet(time_t now)
@@ -350,7 +351,8 @@ static int add_prefixes(struct in6_addr *local, int prefix,
struct dhcp_context *context;
for (context = daemon->dhcp6; context; context = context->next)
if (prefix == context->prefix &&
if (!(context->flags & CONTEXT_TEMPLATE) &&
prefix == context->prefix &&
is_same_net6(local, &context->start6, prefix) &&
is_same_net6(local, &context->end6, prefix))
{
@@ -536,35 +538,37 @@ static int iface_search(struct in6_addr *local, int prefix,
(void)valid;
for (context = daemon->dhcp6; context; context = context->next)
if (prefix == context->prefix &&
if (!(context->flags & CONTEXT_TEMPLATE) &&
prefix == context->prefix &&
is_same_net6(local, &context->start6, prefix) &&
is_same_net6(local, &context->end6, prefix))
if (context->ra_time != 0 && difftime(context->ra_time, param->now) <= 0.0)
{
/* found an interface that's overdue for RA determine new
timeout value and arrange for RA to be sent unless interface is
still doing DAD.*/
if (!dad)
param->iface = if_index;
if (difftime(param->now, ra_short_period_start) < 60.0)
/* range 5 - 20 */
context->ra_time = param->now + 5 + (rand16()/4400);
else
/* range 450 - 600 */
context->ra_time = param->now + 450 + (rand16()/440);
/* zero timers for other contexts on the same subnet, so they don't timeout
independently */
for (context = context->next; context; context = context->next)
if (prefix == context->prefix &&
is_same_net6(local, &context->start6, prefix) &&
is_same_net6(local, &context->end6, prefix))
context->ra_time = 0;
return 0; /* found, abort */
}
is_same_net6(local, &context->end6, prefix) &&
context->ra_time != 0 &&
difftime(context->ra_time, param->now) <= 0.0)
{
/* found an interface that's overdue for RA determine new
timeout value and arrange for RA to be sent unless interface is
still doing DAD.*/
if (!dad)
param->iface = if_index;
if (difftime(param->now, ra_short_period_start) < 60.0)
/* range 5 - 20 */
context->ra_time = param->now + 5 + (rand16()/4400);
else
/* range 450 - 600 */
context->ra_time = param->now + 450 + (rand16()/440);
/* zero timers for other contexts on the same subnet, so they don't timeout
independently */
for (context = context->next; context; context = context->next)
if (prefix == context->prefix &&
is_same_net6(local, &context->start6, prefix) &&
is_same_net6(local, &context->end6, prefix))
context->ra_time = 0;
return 0; /* found, abort */
}
return 1; /* keep searching */
}