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[#2022] Added PARK status handle

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This commit is contained in:
Francis Dupont
2024-01-19 14:44:26 +01:00
parent 89a34eef90
commit 02e7cb272b
4 changed files with 17 additions and 0 deletions
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2
src/bin/dhcp6/dhcp6_messages.cc
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@@ -84,6 +84,7 @@ extern const isc::log::MessageID DHCP6_HOOK_PACKET_RCVD_SKIP = "DHCP6_HOOK_PACKE
extern const isc::log::MessageID DHCP6_HOOK_PACKET_SEND_DROP = "DHCP6_HOOK_PACKET_SEND_DROP";
extern const isc::log::MessageID DHCP6_HOOK_PACKET_SEND_SKIP = "DHCP6_HOOK_PACKET_SEND_SKIP";
extern const isc::log::MessageID DHCP6_HOOK_SUBNET6_SELECT_DROP = "DHCP6_HOOK_SUBNET6_SELECT_DROP";
extern const isc::log::MessageID DHCP6_HOOK_SUBNET6_SELECT_PARK = "DHCP6_HOOK_SUBNET6_SELECT_PARK";
extern const isc::log::MessageID DHCP6_HOOK_SUBNET6_SELECT_SKIP = "DHCP6_HOOK_SUBNET6_SELECT_SKIP";
extern const isc::log::MessageID DHCP6_INIT_FAIL = "DHCP6_INIT_FAIL";
extern const isc::log::MessageID DHCP6_LEASE_ADVERT = "DHCP6_LEASE_ADVERT";
@@ -258,6 +259,7 @@ const char* values[] = {
"DHCP6_HOOK_PACKET_SEND_DROP", "%1: prepared DHCPv6 response was not sent because a callout set the next ste to DROP",
"DHCP6_HOOK_PACKET_SEND_SKIP", "%1: prepared DHCPv6 response is not built because a callout set the next step to SKIP",
"DHCP6_HOOK_SUBNET6_SELECT_DROP", "%1: packet was dropped because a callout set the drop flag",
"DHCP6_HOOK_SUBNET6_SELECT_PARK", "%1: packet was parked",
"DHCP6_HOOK_SUBNET6_SELECT_SKIP", "%1: no subnet was selected because a callout set the next step to SKIP",
"DHCP6_INIT_FAIL", "failed to initialize Kea server: %1",
"DHCP6_LEASE_ADVERT", "%1: lease for address %2 and iaid=%3 will be advertised",

1
src/bin/dhcp6/dhcp6_messages.h
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@@ -85,6 +85,7 @@ extern const isc::log::MessageID DHCP6_HOOK_PACKET_RCVD_SKIP;
extern const isc::log::MessageID DHCP6_HOOK_PACKET_SEND_DROP;
extern const isc::log::MessageID DHCP6_HOOK_PACKET_SEND_SKIP;
extern const isc::log::MessageID DHCP6_HOOK_SUBNET6_SELECT_DROP;
extern const isc::log::MessageID DHCP6_HOOK_SUBNET6_SELECT_PARK;
extern const isc::log::MessageID DHCP6_HOOK_SUBNET6_SELECT_SKIP;
extern const isc::log::MessageID DHCP6_INIT_FAIL;
extern const isc::log::MessageID DHCP6_LEASE_ADVERT;

5
src/bin/dhcp6/dhcp6_messages.mes
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@@ -472,6 +472,11 @@ point, the setting of the flag instructs the server to drop the
received packet. The argument holds the client and transaction
identification information.
% DHCP6_HOOK_SUBNET6_SELECT_PARK %1: packet was parked
This debug message is printed when a callout installed on the
subnet6_select hook point set the park flag. The argument holds the
client and transaction identification information.
% DHCP6_HOOK_SUBNET6_SELECT_SKIP %1: no subnet was selected because a callout set the next step to SKIP
This debug message is printed when a callout installed on the
subnet6_select hook point set the next step to SKIP value. For this particular hook

9
src/bin/dhcp6/dhcp6_srv.cc
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@@ -2013,6 +2013,15 @@ Dhcpv6Srv::selectSubnet(const Pkt6Ptr& question, bool& drop) {
return (Subnet6Ptr());
}
// Callouts parked the packet. Same as drop but callouts will resume
// processing or drop the packet later.
if (callout_handle->getStatus() == CalloutHandle::NEXT_STEP_PARK) {
LOG_DEBUG(hooks_logger, DBG_DHCP6_HOOKS, DHCP6_HOOK_SUBNET6_SELECT_PARK)
.arg(question->getLabel());
drop = true;
return (Subnet6Ptr());
}
// Use whatever subnet was specified by the callout
callout_handle->getArgument("subnet6", subnet);
}