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When a DHCP client is in the bound state, it wakes up
halfway through it's lease (by default) to try and renew
the lease. The ip4-dhcp-client-detect is not enabled as
a feature at this point, so replies sent from the DHCP
server do not get applied to the lease. Eventually the
lease expires, the address is removed from the interface,
a new discovery is performed and the same address is added
back to the interface.
Before sending a request to renew in the bound state, enable
the feature to process the reply.
Change-Id: I95332ee0596f47df6f3c8bf8e3f0698dde9a1fc5
Signed-off-by: Matthew Smith <mgsmith@netgate.com>
(cherry picked from commit 7cb7bb3fa1eca927cd33d8b434ce0eac1d57a987)
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Add a few dhcp client rx packet/state counters
Temporarily disable the dhcp client unit test, since it trips over the
newly-added hardware address check.
Change-Id: I7f68607e6ed3d738cba357c3fe76664a99b71cd8
Signed-off-by: Dave Barach <dave@barachs.net>
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Change-Id: I469a734747099cef2d135d77e4db0244e24bf0bc
Signed-off-by: Dave Barach <dbarach@cisco.com>
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We disable the client detect feature when we bind a DHCP address. Turn
it back on again when the lease expires. Otherwise, if the DHCP
server replies after an outage, we'll never see the reply.
Add dhcp packet tx counters, by packet type
Change-Id: Id54b05647d5d7bd8d3ab99e6584ee86d9e4ff7f9
Signed-off-by: Dave Barach <dave@barachs.net>
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Crash occurring With a worker thread configured and dhcp
client active on an interface. When a DHCP reply packet
is received, call to ethernet_get_main() from
dhcp_proxy_to_client_input() was causing a crash.
Replaced with a call to vnet_get_ethernet_main().
Once that was resolved, calling dhcp_client_acquire_address()
from a worker thread also caused a crash. Changed so the main
thread will do the address/route configuration.
Change-Id: Ib23984787102dea8cf6cfcde86188a751f15c1e1
Signed-off-by: Matthew Smith <mgsmith@netgate.com>
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DISCOVER message sent.
According to RFC2131:
In the case of a client using DHCP for initial configuration (before
the client's TCP/IP software has been completely configured), DHCP
requires creative use of the client's TCP/IP software and liberal
interpretation of RFC 1122. The TCP/IP software SHOULD accept and
forward to the IP layer any IP packets delivered to the client's
hardware address before the IP address is configured; DHCP servers
and BOOTP relay agents may not be able to deliver DHCP messages to
clients that cannot accept hardware unicast datagrams before the
TCP/IP software is configured.
To work around some clients that cannot accept IP unicast datagrams
before the TCP/IP software is configured as discussed in the previous
paragraph, DHCP uses the 'flags' field [21]. The leftmost bit is
defined as the BROADCAST (B) flag. The semantics of this flag are
discussed in section 4.1 of this document. The remaining bits of the
flags field are reserved for future use. They MUST be set to zero by
clients and ignored by servers and relay agents. Figure 2 gives the
format of the 'flags' field.
this changes means VPP conforms to the:
"SHOULD accept and forward to the IP layer any IP packets delivered
to the client's hardware address before the IP address is configured"
with the caveat that VPP allows DHCP packets destined to the stanard client
DHCP port to be delivered. With this enhancement the control-plane is now
able to choose the setting of the broadcast flag.
Change-Id: Ia4eb2c9bb1e30c29f9192facc645e9533641955a
Signed-off-by: Neale Ranns <nranns@cisco.com>
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Change-Id: I45a166b5780675d2bc6fe90595f413725704eaa8
Signed-off-by: khemendra kumar <khemendra.kumar13@gmail.com>
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Fix dhcp_client_for_us() function to utilize rpc_call_main_thread
to call vlib_process_signal_event() to ensure proper handling
irrespective of it being called in main thread or worker thread.
Added ASSERT to vlib_process_sinal.. path to make sure it is called
in main thread.
Change-Id: I4109cc049d8e4225d896ce492ce201011dc9c911
Signed-off-by: John Lo <loj@cisco.com>
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[support for VPWS/VPLS]
- switch to using dpo_proto_t rather than fib_protocol_t in fib_paths so that we can describe L2 paths
- VLIB nodes to handle pop/push of MPLS labels to L2
Change-Id: Id050d06a11fd2c9c1c81ce5a0654e6c5ae6afa6e
Signed-off-by: Neale Ranns <nranns@cisco.com>
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despite VPP DHCP client setting neither ciaddr nor giaddr and setting the broadcast bit (see RFC 2131 section 4.1) some DHCP servers will still send a unicast DCHPACK. So as not to drop this VPP must have both 1) a receive FIB entry for the OFFERED IP adress and 2) a 'don't drop me because of uRPF' FIB entry for the DHCP server's address.
Change-Id: I167d858deb45629318cbdccf5bf67d971730a42f
Signed-off-by: Neale Ranns <nranns@cisco.com>
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the existing seeting of client_id to a VPP version number was unused and so overridden
Change-Id: If9ebea936336f1fcca8d07e67186c95f8f8f0ccd
Signed-off-by: Neale Ranns <nranns@cisco.com>
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Change-Id: I63c59e3c13859b51999d283774f7783ef0a6a5ed
Signed-off-by: Neale Ranns <nranns@cisco.com>
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Change-Id: I4a529dfab5d0ce6b0bbc0ccbbd89c6b109dbf917
Signed-off-by: Neale Ranns <nranns@cisco.com>
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tests). The DPO was incorrectly initialised with FIB_PROTO_MAX
Change-Id: I962df9e162e4dfb6837a5ce79ea795d5ff2d7315
Signed-off-by: Neale Ranns <nranns@cisco.com>
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Multiple DHCP (4 and/or 6) servers can be added and removed through multiple calls to the 'set dhcp server' API.
All 4/6/ discover/solicit messages will then be replicated to all servers in the list. The expectation is that the servers/system is configured in such a way that this is viable.
If VSS information is providied for the clinet VRF which also has multiple servers configured, then the same VSS information is sent to each server. Likewise the source address of packets sent to from VPP to each server is the same.
Change-Id: I3287cb084c84b3f612b78bc69cfcb5b9c1f8934d
Signed-off-by: Neale Ranns <nranns@cisco.com>
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The DHCP proxy and VSS information maintained by VPP is the same for v4 and v6, so we can manage this state using the same code.
Packet handling is cleary different, so this is kept separate.
Change-Id: I10f10cc1f7f19debcd4c4b099c6de64e56bb0c69
Signed-off-by: Neale Ranns <nranns@cisco.com>
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DHCP additions:
1) DHCPv4 will only relay a message back to the client, if the Option82 information is present. So make this the default.
2) It is no longer possible to select via the API to "insert circuit ID" - since this is now default
3) Remove the version 2 API since it's now the same as version 1.
4) Adding the VSS option is now conditional only on the presence of VSS config (not the 'insert' option in the set API)
5) DHCP proxy dump via API
Change-Id: Ia7271ba8c1d4dbf34a02c401d268ccfbb1b74f17
Signed-off-by: Neale Ranns <nranns@cisco.com>
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Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23
Signed-off-by: Damjan Marion <damarion@cisco.com>
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