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2024-09-06linux-cp: auto select tap id when creating lcp pairStanislav Zaikin1-1/+2
Now when lcp pair is created, tap instance is based on hw_id. But tap interface with such instance can already exist. Introduce an offset and auto-selection based on it. Type: fix Signed-off-by: Stanislav Zaikin <stanislav.zaikin@46labs.com> Change-Id: I9db39106b0b0d5bf95c445b03e5b7ff52f946dd2
2024-06-25linux-cp: populate mapping vif-sw_if_index only for default-nsDenys Haryachyy1-2/+6
When custom netns is used we don't need to populate the mapping ifindex->sw_if_index otherwise netlink events in default-ns can apply settings to wrong interfaces. Most of the lcp functions however wasn't working for such interfaces and neither it was fixed by this patch. Type: fix Change-Id: I74a8a4e332753f9a40fc291d489dfd7fc51cbef3 Signed-off-by: Stanislav Zaikin <stanislav.zaikin@46labs.com>
2024-04-15linux-cp: fix seg fault in get_v2 methodsAnton Nikolaev1-2/+9
vl_api_lcp_itf_pair_get_v2_t_handler method was not be able to handle invalid sw_if_index, it caused a seg fault. With this fix, the method checks for an invalid sw_if_index and sends error back to caller. Type: fix Change-Id: I4e89b0cab34f9109c4ce2689021ecfc2786055ab Signed-off-by: Anton Nikolaev <anikolaev@netgate.com>
2024-04-01linux-cp: add support for tap num queues configVladislav Grishenko3-2/+39
This change allows to limit lcp interface queues to be used by explicit host interface workers. Type: improvement Signed-off-by: Vladislav Grishenko <themiron@yandex-team.ru> Change-Id: I0626f66021e5a5f251470156231dc44ddaea5ee6
2024-01-30linux-cp: add add_del_v3 and get_v2 methodsAnton Nikolaev2-6/+108
Added vl_api_lcp_itf_pair_add_del_v3_t_handler method, it can return vif_index in reply. Also added vl_api_lcp_itf_pair_get_v2_t_handler methods, this method is able to dump only one lcp pair or dump all lcp pairs via stream_msg. Type: improvement Change-Id: I1d25344ee57f8fac8b857bb3a9a03116230b4d2c Signed-off-by: Anton Nikolaev <anikolaev@netgate.com>
2024-01-10linux-cp: fix route prefix constructionAlexander Skorichenko1-1/+1
Prevent comparison ops for uninitialized IPv6 prefix bytes. Type: fix Change-Id: I440fea7f0725769406ad348eb3402a98c593dc3c Signed-off-by: Alexander Skorichenko <askorichenko@netgate.com>
2024-01-10linux-cp: Fix looping netlink messagesPim van Pelt5-6/+45
Signal when consuming a batch of netlink messages, in order to inhibit lcp_sync from generating new netlink messages. This avoids link up/down state changess from triggering an infinite loop. Do this in the regular case of nl_route_process_msgs() and in the special case of re-synchronizing in lcp_nl_recv_dump_replies(). Type: fix Change-Id: I419d3f9aa350c119b3778b644c65165cb4cc1bef Signed-off-by: Pim van Pelt <pim@ipng.nl>
2023-10-13linux-cp: check if lcp_itf_pair exists before creating tapStanislav Zaikin1-0/+9
Now we create tun/tap and then check whether lcp_itf_pair was already created. Move the check in the beginning. Type: fix Signed-off-by: Stanislav Zaikin <stanislav.zaikin@46labs.com> Change-Id: I848685a9cfdbe92a5e38ecb8e5d5322262b4e384
2023-07-12linux-cp: fix crash on processing dump of routesAlexander Chernavin1-3/+10
nl_route_add() recently started to use its optional argument to check whether replace flag is set for the message. When notification messages are processed, the argument is a pointer to the corresponding message info. However, when dump replies are processed, the argument is a null pointer. This leads to null pointer dereference and crash when dump of routes is processed. With this fix, check for replace flag only if message info was passed to nl_route_add(). Otherwise, assume the flag is not set. Dump replies do not have it set. Type: fix Change-Id: Icb04a1146e09cc965b623018c28f91b347be0eab Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
2023-07-11linux-cp: Basic MPLS support.Adrian Pistol5-11/+419
1) Imports ENCAP_MPLS labels from IPv4/IPv6 routes. Note that this requires libnl 3.6.0 or newer. In previous patches, the fib_path_ext_t had a path ID of -1. After a long investigation, it turned out to be caused by route weight being set to 0. There is a comment explaining more details. 2) Handles MPLS routes. MPLS routes were wrongly added as IPv4 routes before. POP and SWAP are now both supported. All the routes are installed as NON-EOS and EOS routes, as the Linux kernel does not differentiate. EOS POP used in PHP uses the next-hop address family to determine the resulting address family. This patch is sufficient for P setups. PE setups with implicit null should also function okay, as long as a seperate label gets programmed per address family. PE setups with explicit null will also forward packets, but punting is a bit odd and needs MPLS input enabled on the LCP host device. 3) Propagate MPLS input state to LCP Pair and Linux. Since the Linux kernel uses the MPLS routes itself, the LCP pair tap needs MPLS enabled to allow host originated packets. This also syncs the Linux `net.mpls.conf.<host_if>.input` sysctl to allow punted packets to have MPLS labels, mostly explicit nulls. In addition, a special feature is enabled to cross connect MPLS packets coming from Linux directly to interface-output untouched. Make sure to enable MPLS/add a table in VPP first and load the MPLS kernel modules!! Type: feature Change-Id: Ie4184bb4cc96905bf8b483a27e7ca6d251697374 Signed-off-by: Adrian Pistol <vifino@posteo.net> Signed-off-by: Pim van Pelt <pim@ipng.nl>
2023-07-06api: lcp - Mark old message versions as deprecatedOndrej Fabry1-2/+6
List of changed messages: - lcp_itf_pair_add_del - lcp_itf_pair_add_del_reply - lcp_itf_pair_add_del_v2 - lcp_itf_pair_add_del_v2_reply This change is part of VPP API cleanup initiative. Type: fix Signed-off-by: Ondrej Fabry <ofabry@cisco.com> Change-Id: Ic20a852dd1fb27858c8776095f9c98757b89bfe8
2023-06-05linux-cp: Fix add vs update on routesPim van Pelt3-58/+69
Linux uses NLM_F_REPLACE in the netlink message to signal a FIB update The code invariably does a FIB update for IPv4 and a addition for IPv6. Without this fix, the following: ip route add 2001:db8::/48 via 2001:db8::1 ip route replace 2001:db8::/48 via 2001:db8::2 ends up as two separate FIB entries in VPP. With the fix, there will be one FIB entry (the second one with nexthop ::2). Type: fix Change-Id: I8f98d6ded52ae0c60bfddaa7fc39acbbaa19d34a Signed-off-by: Pim van Pelt <pim@ipng.nl>
2023-05-26linux-cp: update adjs for subifs too when mac changesAlexander Chernavin1-4/+21
The plugin creates and manages adjacencies for the physical interface in each interface pair (they are part of the x-connect feature). When a link update notification is received from the host system, MAC address of the corresponding physical interface is updated (as needed) as well as previously created adjacencies for it (because a new rewrite string needs to be generated). Subinterfaces inherit MAC address from the parent interface. When MAC address of the parent interface changes, it also implies MAC address change for its subinterfaces. The problem is that this is currently not considered in the plugin. After MAC address update on the parent interface, packets sent from subinterfaces might have wrong source MAC address. For example, IPv6 Neighbor Solicitation messages will be sent with the wrong (previous) MAC address and neighbor discovery will fail. With this fix, when the plugin updates adjacencies for a physical interface, it will also update adjacencies for the subinterfaces with existing interface pair. Type: fix Change-Id: Ia5f617197e33cb79b9b025c02c2c126c31a551ec Signed-off-by: Alexander Chernavin <achernavin@netgate.com>
2023-04-14linux-cp: Handle RTA_VIA routes.Adrian Pistol1-2/+3
RTA_VIA allows routes to have a next-hop in a different address family. This commit makes linux-cp import those types of routes correctly, instead of importing the routes without a gateway. This uses rtnl_route_nh_get_gateway, which is available since libnl 3.4.0 (Oct. 9, 2017). Even Debian Stretch has it via backports. Type: fix Change-Id: I06297c700461ba7874eb8baf9355bd40990b3121 Signed-off-by: Adrian Pistol <vifino@posteo.net>
2023-04-11linux-cp: don't create tap for non-eth ifacesStanislav Zaikin1-0/+8
Creation of lcp tap for non-ethernet interfaces can potentially lead to a crash, so avoid it. Type: fix Change-Id: I76ded8a08ea38a2c31d0215804af023207d4d3e1 Signed-off-by: Stanislav Zaikin <stanislav.zaikin@46labs.com>
2023-03-21linux-cp: fix get_default_ns api methodStanislav Zaikin1-13/+7
Type: fix Change-Id: I141e5779aab7eee3068b702dd2f93765420fb920 Signed-off-by: Stanislav Zaikin <stanislav.zaikin@46labs.com>
2023-02-02linux-cp: fix auto-sub-intStanislav Zaikin2-1/+5
lcp_itf_pair_pool could grew during sub-interface creation. Type: fix Signed-off-by: Stanislav Zaikin <zstaseg@gmail.com> Change-Id: Ideafe392f9bb2b418ce9d6faa4f08dfe26f4a273
2023-01-23vppapigen: enable codegen for stream message typesStanislav Zaikin2-7/+7
Enable codegen for C type from 'rpc A returns B stream C' notation Type: improvement Change-Id: I05cfce71c385d414d7b177a080009628bc8c8fad Signed-off-by: Stanislav Zaikin <zstaseg@gmail.com>
2023-01-11linux-cp: Fix endianness in lcp responsePim van Pelt1-1/+1
Creation of LCP will return garbled host_sw_if_index of the newly created TAP interface. Example PAPI code: ``` lcp_add = vpp.api.lcp_itf_pair_add_del_v2(is_add=True, sw_if_index=17, host_if_type=VppEnum.vl_api_lcp_itf_host_type_t.LCP_API_ITF_HOST_TAP, host_if_name="loop0", netns="dataplane") print(lcp_add) lcp_ret = vpp.api.lcp_itf_pair_get() print(lcp_ret) ``` Before, the returned host_sw_if_index has the wrong endianness: VPP version is 23.02-rc0~212-gf06a518f8 lcp_itf_pair_add_del_v2_reply(_0=103, context=2, retval=0, host_sw_if_index=301989888) (lcp_itf_pair_get_reply(_0=105, context=3, retval=0, cursor=4294967295),[lcp_itf_pair_details(_0=106, context=3, phy_sw_if_index=17, host_sw_if_index=18, vif_index=594, host_if_name='loop0', host_if_type=<vl_api_lcp_itf_host_type_t.LCP_API_ITF_HOST_TAP: 0>, netns='dataplane')]) After, it is correctly showing idx 18: VPP version is 23.02-rc0~212-gf06a518f8 lcp_itf_pair_add_del_v2_reply(_0=103, context=2, retval=0, host_sw_if_index=18) (lcp_itf_pair_get_reply(_0=105, context=3, retval=0, cursor=4294967295), [lcp_itf_pair_details(_0=106, context=3, phy_sw_if_index=17, host_sw_if_index=18, vif_index=595, host_if_name='loop0', host_if_type=<vl_api_lcp_itf_host_type_t.LCP_API_ITF_HOST_TAP: 0>, netns='dataplane')]) Type: fix Signed-off-by: pim@ipng.nl Change-Id: I9085bac0c4a9ad64356c67f9b85f4910131e349e
2022-12-12linux-cp: set severity of noisy message to debugMatthew Smith1-1/+1
Type: improvement The log buffer and event buffer get lots of messages written like "Processed 2 messages" by linux-nl when its enabled. This can crowd out more important messages and should only actually be stored if debug messages are desired. Change from logging with NL_INFO() to NL_DBG(). Signed-off-by: Matthew Smith <mgsmith@netgate.com> Change-Id: I9055432f7ef35d3e0ad59dce307d2b3c6284002f
2022-11-23linux-cp: fix FIB_ENTRY_FLAG_ATTACHEDAlexander Skorichenko1-0/+10
Type: fix     Fib entries for attached routes when sourced from FIB_SOURCE_API or FIB_SOURCE_CLI get the FIB_ENTRY_FLAG_ATTACHED flag raised on the source. Such a route added from linux-cp doesn't get this flag.     Fix this flag for linux-cp sources by passing it to the fib entry's update/create function in lcp_router_route_add(). Signed-off-by: Alexander Skorichenko <askorichenko@netgate.com> Change-Id: I24278ef86886cfee8a14acb250fb6992a754cc3c
2022-11-10linux-cp: fix lcp_itf_pair_create()'s memory leakluoyaozu1-0/+3
need free args.error if args.rv < 0 Type: fix Signed-off-by: luoyaozu <luoyaozu@foxmail.com> Change-Id: I8ceebfc36f51798d8d1a8e4c41bec33d74344396
2022-10-15linux-cp: fix infinite loop in CLI lcp defaultluoyaozu1-3/+12
CLI lcp default clear or lcp default netns hangs in an infinite while loop. Type: fix Signed-off-by: luoyaozu <luoyaozu@foxmail.com> Change-Id: I699338abc045c84361707260adbb5b574a383170
2022-09-19linux-cp: fix some CLI error messagesMatthew Smith1-79/+71
Type: fix If unrecognized input was provided to the commands which add or delete a pair, the error message was being created incorrectly and only displayed something like "unknown input `'". Provide the correct argument to format_unformat_error so that the actual unrecognized input is printed. There also was no error or useful information printed if only the base command were provided without any additional arguments. This should print a warning about what required data was missing. Reorganize code to handle this and to make sure that memory gets freed appropriately. Change-Id: If454714f50cf41b3b56cfadfbf017f1d160e13a4 Signed-off-by: Matthew Smith <mgsmith@netgate.com>
2022-08-26linux-cp: fix coverity 216937Andrew Yourtchenko1-1/+1
Initialize the host_sw_if_index to ~0 so in the error cases the variable is set to something predictable. Type: fix Change-Id: Ic55e4f0cbfa286e85dfb54b89b5321af18a439a1 Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
2022-08-23linux-cp: handle AF_BRIDGE neighborsMatthew Smith1-2/+8
Type: improvement VPP crashes when a linux-cp tap is added to a bridge on the host system because rtnl_neigh_get_dst() returns NULL for the neighbor message that is sent by the kernel. Check for NULL before trying to use the address from a neighbor in a netlink message. Signed-off-by: Matthew Smith <mgsmith@netgate.com> Change-Id: I8a683d815a09620df9c0cc76e18df39828428e2c Signed-off-by: Matthew Smith <mgsmith@netgate.com>
2022-08-19ipsec: enable UDP encap for IPv6 ESP tun protectMatthew Smith1-0/+2
Type: improvement If an SA protecting an IPv6 tunnel interface has UDP encapsulation enabled, the code in esp_encrypt_inline() inserts a UDP header but does not set the next protocol or the UDP payload length, so the peer that receives the packet drops it. Set the next protocol field and the UDP payload length correctly. The port(s) for UDP encapsulation of IPsec was not registered for IPv6. Add this registration for IPv6 SAs when UDP encapsulation is enabled. Add punt handling for IPv6 IKE on NAT-T port. Add registration of linux-cp for the new punt reason. Add unit tests of IPv6 ESP w/ UDP encapsulation on tun protect Signed-off-by: Matthew Smith <mgsmith@netgate.com> Change-Id: Ibb28e423ab8c7bcea2c1964782a788a0f4da5268
2022-08-11linux-cp: FIB lookup for P2MP tunnel interfacesMatthew Smith1-4/+22
Type: improvement If a tun/L3 interface is paired with a multipoint tunnel interface, pass packets arriving from the host to ip[46]-lookup instead of cross-connecting them to the tunnel interface. Adjacencies are used to drive the rewrite for Multipoint tunnel interfaces, so the generic adjacency used with a P2P tunnel will not work correctly. Change-Id: I2d8be56dc5029760978c05bc4953f84c8924a412 Signed-off-by: Matthew Smith <mgsmith@netgate.com>
2022-07-21linux-cp: fix endianess for autoendian methodsStanislav Zaikin1-9/+9
If an API methos is specified as "autoendian" it should use macros with _END at the end. Type: fix Change-Id: I73b7b4f6996b30631c4355ace156ed0665c4b8ad Signed-off-by: Stanislav Zaikin <zstaseg@gmail.com>
2022-07-19linux-cp: change namespace to netnsStanislav Zaikin2-33/+28
namespace is a keyword for c++ compilers Type: fix Change-Id: Ia8fc9ef1cc15fe9d0e40b3f543f9e8f411203b89 Signed-off-by: Stanislav Zaikin <zstaseg@gmail.com>
2022-07-19linux-cp: API downgrade due to namespace keywordMatthew Smith1-0/+5
Type: fix A user had trouble compiling C++ code to work with the linux-cp APIs because some messages contain a field called namespace, which is a reserved word for C++. We wish to rename those fields so the messages which are affected are being set to in_progress. Change-Id: I3bd1dc898c146a9980161a562b2b453313bb58fd Signed-off-by: Matthew Smith <mgsmith@netgate.com>
2022-05-23linux-cp: fix display of link_speedAnton Nikolaev1-1/+2
Type: fix Don't set link speed for tap interface when link speed is unknown Signed-off-by: Anton Nikolaev <anikolaev@netgate.com> Change-Id: Ia97277b3bf7c958fa665e4ead8d0e48f02921e69
2022-04-26linux-cp: sync addr and neigh only for lcp interfacesStanislav Zaikin1-3/+30
Type: fix Signed-off-by: Stanislav Zaikin <zstaseg@gmail.com> Change-Id: I792467b73449074e59c4232b1f82d134c399624c
2022-04-08linux-cp: fix setting mtu on hardware interfacesMatthew Smith1-1/+1
Type: fix Fixes: 616447c39231 In lcp_router_link_mtu(), either vnet_hw_interface_set_mtu() or vnet_sw_interface_set_mtu() is called, based on whether this appears to be a physical interface. The test to determine whether this is true was incorrect and probably never worked right so vnet_sw_interface_set_mtu() was always being called. This causes some breakage with Recent changes to code which manages interface MTUs. Fix the test so the right function is called. Change-Id: I1ecccbce37d5a1e53b2349ed40f3d0d27eb03569 Signed-off-by: Matthew Smith <mgsmith@netgate.com>
2022-03-29linux-cp: fix tap interface attrs in case the sw pool realloc'dVladislav Grishenko1-18/+16
Creating tap interface / sub interface causes allocation of a new software interface with possible sw interface pool reallocation. In such case accessing L3 MTU and interface flags by obsolete sw pointer is UAF. Instead, keep desired tap interface MTU value before sw intreface creation and refetch sw pointer right before sw flags inheritance. Type: fix Fixes: b89c1ddcb3b4f9138ca3ebefb2115f896ff3e1bd Signed-off-by: Vladislav Grishenko <themiron@yandex-team.ru> Change-Id: I21ea46d146d11060bb9bedc77377ab17ae9e22e8
2022-03-29linux-cp: handle ipv4 routes when link goes down on subifAlexander Chernavin1-17/+43
Type: improvement Currently, the plugin can monitor link state changes on hardware interfaces for which a linux-cp pair exists. When the link goes down on one of the hardware interfaces, the plugin processes IPv4 routes that resolve through that interface according to the configurations: del-static-on-link-down and del-dynamic-on-link-down. The problem is that link state changes are not signaled for subinterfaces and the code that handles IPv4 routes is not triggered. When the link on a hardware interface goes down, it implies that subinterfaces added to that interface also will have the link in the down state. With this change, when the link goes down on a hardware interface, iterate over subinterfaces added to the interface and apply the same logic of routes processing as for hardware interfaces. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I97337d2e328437c73f2d99a00737768778f197a1
2022-03-29linux-cp: add support for table flush if multiple interfacesAlexander Chernavin1-15/+39
Type: improvement lcp_router_table_flush() is used to remove routes from the given route table if they are resolved through the given interface with specified FIB source. Currently, if you need to remove routes from a route table that are resolved through one of the interfaces from a vector, the function has to be executed for every interface from the vector. Every execution walks the route table again. With this change, lcp_router_table_flush() accepts a vector of interfaces. Thus, the function can walk a single route table once and delete routes that resolve through one of the interfaces from the vector. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I6d99384064d279dea24bb4dc1790a1af943be41c
2022-03-28linux-cp: Fix API responsePim van Pelt1-5/+7
* Correct endianness issue * lip_namespace is a vector not a string * Provide null termination to avoid unpack() failures in the client Responses in the python API now look like: lcp_itf_pair_details(_0=328, context=3, phy_sw_if_index=1, host_sw_if_index=3, vif_index=19, host_if_name='ice0', host_if_type=<vl_api_lcp_itf_host_type_t.LCP_API_ITF_HOST_TAP: 0>, namespace='dataplane') lcp_itf_pair_details(_0=328, context=3, phy_sw_if_index=2, host_sw_if_index=4, vif_index=20, host_if_name='ice1', host_if_type=<vl_api_lcp_itf_host_type_t.LCP_API_ITF_HOST_TAP: 0>, namespace='dataplane') lcp_itf_pair_details(_0=328, context=3, phy_sw_if_index=5, host_sw_if_index=6, vif_index=21, host_if_name='ice0.1234', host_if_type=<vl_api_lcp_itf_host_type_t.LCP_API_ITF_HOST_TAP: 0>, namespace='dataplane') Type: fix Signed-off-by: Pim van Pelt <pim@ipng.nl> Change-Id: If4bf06a8b70977676ec7f5b1413cee6cc9d1714a
2022-03-27linux-cp: fix name formattingDmitry Valter1-1/+1
Format host interface name as vector rather than c-string. Otherwise non-null-terminated vector overrun triggers ASAN. Type: fix Fixes: 1705a6baefe205bb6792b547c7376eee3f328a71 Signed-off-by: Dmitry Valter <d-valter@yandex-team.ru> Change-Id: Ib204e57ee17c7ed3bfeb568dcdd834d7d7519102
2022-03-25linux-cp: handle ipv4 routes when link goes downAlexander Chernavin5-0/+163
Type: improvement Currently, when the link goes down on an interface, routes that resolve through that interface and created with Nexthop API are removed by the kernel. However, IPv4 routes remain in the FIB because the kernel doesn't send any notifications about that. And for the plugin working with user-space applications that create routes in the kernel using Nexthop API there should be a mechanism to synchronize the FIB and the kernel in this case. With this change, add two new startup configuration options to the plugin to be able to control what should happen with static and dynamic routes managed by the plugin on link down: - del-static-on-link-down (disabled by default, delete routes created with the linux-cp static FIB source on link down), - del-dynamic-on-link-down (disabled by default, delete routes created with the linux-cp dynamic FIB source on link down). Then, monitor link state changes on interfaces for which a linux-cp pair exists. If the link goes down on one of the interfaces, process routes that resolve through that interface according to the new configurations. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I0fbaeeca3f3d1fcd22e8eebb08a0a4a3d0dfe5b8
2022-03-07linux-cp: handle ipv4 routes when interface is disabledAlexander Chernavin1-2/+88
Type: improvement Currently, when an interface is brought down administratively, IPv4 routes that resolve through that interface remain in the FIB. However, the kernel removes those routes but doesn't send any notifications about that. Desynchronization between the kernel and VPP happens. With this change, when a notification received from the kernel indicating that an interface was brought down, in addition to bringing the VPP interface down, walk the IPv4 FIB bound to that interface and remove any entries that resolve through that interface and were added with one of the linux-cp FIB sources. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I0cd14bb63c9e6616ae1c5739b17c3bf33b186bc2
2022-03-04linux-cp: fix issue of possibly closing negative fdAlexander Chernavin1-5/+14
Type: fix Primarily fix an issue reported by Coverity in lcp_nl_open_sync_socket() that close() could possibly be run with negative fd. Also, add more checks and error logging there. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I9a88520d068392977a6eba0766451e5652fe512c
2022-03-04linux-cp: stop signaling read event on every notifAlexander Chernavin1-7/+9
Type: improvement Currently, read event signal is sent on every notification message received and added in the queue. With this change, signal read event only when all currently available notification messages are received. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: Ib86d189311ce01f50167e4e97feb99df0292ad96
2022-03-04linux-cp: stop ignoring ENOBUFS while reading notifAlexander Chernavin1-9/+2
Type: improvement Currently, while reading notifications, ENOBUFS error is ignored and reading continues. This was done to minimize the number of notifications that are lost due to reopening the socket. Now that synchronization is implemented to recover from socket errors, ignoring ENOBUFS and reading as much notifications as possible is not actual. Before synchronization, all currently enqueued notification are discarded in any case. With this change, stop reading notifications if any error occurs. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I1184d9a3aa99df63ef59bc2a67be2b1e5e0e9329
2022-03-04linux-cp: ignore neighbors if ip addr is multicastAlexander Chernavin1-0/+17
Type: improvement When dump of neighbors is requested, the replies will also include neighbor entries for IPv6 multicast addresses: GigabitEthernet0/8/0 S ff02::16 33:33:00:00:00:16 GigabitEthernet0/8/0 S ff02::1:ff76:7135 33:33:ff:76:71:35 GigabitEthernet0/8/0 S ff02::2 33:33:00:00:00:02 Such entries are not reported in netlink notification messages and VPP is unlikely to use these. With this change, ignore neighbor entries when the IP address is a multicast address. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: Ic712aa4904f1d559f31fd89ff4541268e2340f84
2022-03-03linux-cp: detect and delete stale entries after syncAlexander Chernavin1-0/+95
Type: improvement During synchronization, only the current actual set of entries is loaded. If some entries are no longer present in the set being loaded but present in VPP, they should be removed to fully syncronize. With this change, add handlers for sync begin and end events. Begin handlers will mark the entries as stale. End handlers will remove the entries that are still marked as stale. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I4f7e872af3e1c9ffa6c63bcc3984ec76def1bb43
2022-03-03linux-cp: resync with kernel after nl socket errorAlexander Chernavin2-27/+503
Type: improvement Currently, if an error happens on the netlink notification socket, the socket gets reopened. A portion of notification messages have been lost because of this and will never arrive on the socket. VPP will be out of sync with the kernel networking state. With this change, synchronize VPP state and the kernel networking state if there was an error polling or reading the notification socket. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I8cdff89b505cd227535a0acaadb6ee757204c45e
2022-03-03linux-cp: make check of message ts null-tolerantAlexander Chernavin1-0/+3
Type: improvement For some message types, timestamps are checked on netlink message to decide whether the message should be applied. For notification messages timestamps are expected to be always available. With this change, before accessing the timestamp, make sure the message info object that carries it is not null. If it is null, pass the check. This is to be ready to process dump replies that will not need the timestamp check and will have the message info object set to null. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: Ic7211c0d451d72f6a5248898b3a8f8e0bca8f7aa
2022-03-03linux-cp: reflect hw link state on tap on pair creationAlexander Chernavin1-0/+14
Type: fix Currently, a tap interface created to be a member of a linux-cp pair has default link state (down) and default link speed (10Mb/s). Then the plugin monitors the link state of the paired hardware interface and if it changes, the new link state is reflected on the tap interface. And when the new link state is "up", the link speed is also reflected on the tap interface. The problem is that this scheme implies that the hardware interface's link state is "down" at the moment of the linux-cp pair creation and then changes. But there are cases when the link state is already "up" at that moment. If that is the case, the link speed on the tap interface will remain the default one until the link comes down and then comes up. With this fix, when a linux-cp pair is created, reflect current link state of the hardware interface being paired on the created tap interface. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I73664d753f4daaa6d439c9ca898fb7363d21c06d
2022-03-02linux-cp: lcp fib fixesVladimir Ratnikov1-5/+6
Some possible side effects for multicast routes appears to be in lcp_router_table_add_or_lock. so ff00/8 route will be processed for ospf purposes the right way Ignore IPv6 kernel routes Skip adding auto routes into FIB Type: fix Signed-off-by: Vladimir Ratnikov <vratnikov@netgate.com> Change-Id: I35f73d629a7fffca7f7d4547adc2549b72c2048f