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* *: use an ifindex_t type, defined in lib/if.h, for ifindex valuesPaul Jakma2016-02-261-9/+12
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* zebra: support FIB override routesTimo Teräs2016-02-261-23/+59
| | | | | | | | | | | | | | | | FIB override routes are for routing protocols that establish shortcut routes, or establish point-to-point routes that should not be redistributed. Namely this is useful NHRP daemon to come. Zebra is extended to select two entries from RIB the "best" entry from routing protocols, and the FIB entry to install to kernel. FIB override routes are never selected as best entry, and thus are never adverticed to other routing daemons. The best FIB override, or if it does not exist the otherwise best RIB is selected as FIB entry to be installed. Signed-off-by: Timo Teräs <timo.teras@iki.fi> Acked-by: Donald Sharp <sharpd@cumulusnetworks.com>
* zebra: use link scope for interface routesTimo Teräs2016-02-261-15/+6
| | | | | | | | | | In linux, 'scope' is a hint of distance of the IP. And this is evident from the fact that only lower scope can be used as recursive via lookup result. This changes all interface routes scope to link so kernel will allow regular routes to use it as via. Then we do not need to use the 'onlink' attribute. Signed-off-by: Timo Teräs <timo.teras@iki.fi>
* zebra: atomic FIB updatesTimo Teräs2016-02-261-212/+121
| | | | | | | | | | | This commit updates the kernel API so that route changes are atomically updated using change/replaces messages instead of first sending a withdraw followed with update. Same for zclient updates, changes are sent as single ADD instead of DELETE + ADD. Signed-off-by: Timo Teräs <timo.teras@iki.fi>
* zebra: Fix non usage of VRF_DEFAULTDonald Sharp2015-12-081-1/+1
| | | | | | A vrf_id was being set to 0 instead of VRF_DEFAULT Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
* zebra: Fix change of distance on ipv6 route creating duplicate routesDonald Sharp2015-12-081-4/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If you enter: ipv6 route 2002:44:44:44::44/128 swp1 4 ipv6 route 2002:44:44:44::44/128 swp1 99 You get: host-111# show ipv6 route Codes: K - kernel route, C - connected, S - static, R - RIPng, O - OSPFv6, I - IS-IS, B - BGP, A - Babel, T - Table, > - selected route, * - FIB route S 2002:44:44:44::44/128 [99/0] is directly connected, swp1 S>* 2002:44:44:44::44/128 [4/0] is directly connected, swp1 This problem is fixed in the ipv4 code path. Copying the same code from the ipv4 into the ipv6 code path fixes the issue. With the fix: host-111(config)# ipv6 route 2002:44:44:44::44/128 swp1 4 host-111(config)# do show ipv6 route Codes: K - kernel route, C - connected, S - static, R - RIPng, O - OSPFv6, I - IS-IS, B - BGP, A - Babel, T - Table, > - selected route, * - FIB route S>* 2002:44:44:44::44/128 [4/0] is directly connected, swp1 C * fe80::/64 is directly connected, swp1 C>* fe80::/64 is directly connected, eth0 host-111(config)# ipv6 route 2002:44:44:44::44/128 swp1 99 host-111(config)# do show ipv6 route Codes: K - kernel route, C - connected, S - static, R - RIPng, O - OSPFv6, I - IS-IS, B - BGP, A - Babel, T - Table, > - selected route, * - FIB route S>* 2002:44:44:44::44/128 [99/0] is directly connected, swp1 C * fe80::/64 is directly connected, swp1 C>* fe80::/64 is directly connected, eth0 host-111(config)# Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
* zebra: Combine static_uninstall_ipv[4|6] into one functionDonald Sharp2015-12-081-65/+4
| | | | Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
* zebra: combine static_ipv[4|6]_nexthop_same into one functionDonald Sharp2015-12-081-22/+16
| | | | | | Combine the static_ipv[4|6]_nexthop_same into static_nexthop_same. Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
* zebra: Combine static_install_ipv[4|6]Donald Sharp2015-12-081-100/+41
| | | | | | | Combine the static_install_ipv[4|6] function calls into static_install_route. Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
* zebra: Remove HAVE_IPV6 from rib.h and zebra_rib.cDonald Sharp2015-12-081-10/+0
| | | | Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
* zebra: Collapse struct static_ipv[4|6] into struct static_routeDonald Sharp2015-12-081-44/+44
| | | | | | | | The 'struct static_ipv4' and 'struct static_ipv6' structures are essentially the same. Collapse them into one data structure 'struct static_route'. Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
* zebra: implement per-route mtu handlingTimo Teräs2015-12-081-2/+7
| | | | | | | | This commits allow overriding MTU using netlink attributes on per-route basis. This is useful for routing protocols that can advertice prefix specific MTUs between routers (e.g. NHRP). Signed-off-by: Timo Teräs <timo.teras@iki.fi>
* zebra: make ZEBRA_FLAG_CHANGED internal statusTimo Teräs2015-12-081-4/+4
| | | | | | | | | This flag is used internally in zebra only. And it makes no sense to expose it over the zclient API, as having it set from client could corrupt the internal state. Signed-off-by: Timo Teräs <timo.teras@iki.fi> Acked-by: Donald Sharp <sharpd@cumulusnetworks.com>
* zebra, lib/memtypes.c: the netlink sockets work per VRFFeng Lu2015-06-031-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch lets the netlink sockets work per VRF. * The definition of "struct nlsock" is moved into zebra/rib.h. * The previous global variables "netlink" and "netlink_cmd" now become the members of "struct zebra_vrf", and are initialized in zebra_vrf_alloc(). * All relative functions now work for a specific VRF, by adding a new parameter which specifies the working VRF, except those functions in which the VRF ID can be obtained from the interface. * kernel_init(), interface_list() and route_read() are now also working per VRF, and moved from main() to zebra_vrf_enable(). * A new function kernel_terminate() is added to release the netlink sockets. It is called from zebra_vrf_disable(). * Correct VRF ID, instead of the previous VRF_DEFAULT, are now passed to the functions of processing interfaces or route entries. Signed-off-by: Feng Lu <lu.feng@6wind.com> Reviewed-by: Alain Ritoux <alain.ritoux@6wind.com> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: Donald Sharp <sharpd@cumulusnetworks.com>
* zebra: add hooks upon enabling / disabling a VRFFeng Lu2015-06-021-1/+1
| | | | | | | | | | | | | | | zebra_vrf_enable() is the callback for VRF_ENABLE_HOOK. It presently needs do nothing. zebra_vrf_disable() is the callback for VRF_DISABLE_HOOK. It presently withdraws routes, shuts down interfaces, and clears the router-id candidates in that VRF. Signed-off-by: Feng Lu <lu.feng@6wind.com> Reviewed-by: Alain Ritoux <alain.ritoux@6wind.com> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: Vincent JARDIN <vincent.jardin@6wind.com> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: configure static routes in any VRFFeng Lu2015-06-021-6/+8
| | | | | | | | | | | | | | | | | | | | | | | Introduce new commands to configure static routes in any VRF, by appending the old static route commands with a new parameter "vrf N". A new parameter "const char *vrf_id_str" is added to the functions zebra_static_ipv4() and static_ipv6_func() to get the configured VRF ID. A new member "vrf_id" is added to the "struct static_ipv4" and "struct static_ipv6", indicating which VRF this static route is configured in. But till now, no interface can exist in any non-default VRF. So these static routes in non-default VRFs are kept inactive. Signed-off-by: Feng Lu <lu.feng@6wind.com> Reviewed-by: Alain Ritoux <alain.ritoux@6wind.com> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: Vincent JARDIN <vincent.jardin@6wind.com> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: let the route-map rule "match interface" work for VRFsFeng Lu2015-06-021-1/+2
| | | | | | | | | | | | | | Introduce a new "struct nexthop_vrfid" to specify a nexthop together with the VRF ID it belongs to. Thus in route_match_interface(), we can lookup the interface from the correct VRF. Signed-off-by: Feng Lu <lu.feng@6wind.com> Reviewed-by: Alain Ritoux <alain.ritoux@6wind.com> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: Vincent JARDIN <vincent.jardin@6wind.com> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: let FIB stand for its respective VRFFeng Lu2015-06-021-82/+129
| | | | | | | | | | | | | | | | | | | | | | | A new member "vrf_id" is added to "struct rib", reflecting the VRF which it belongs to. A new parameter "vrf_id" is added to the relative functions where need, except those: - which already have the parameter "vrf_id"; or - which have a parameter in type of "struct rib"; or - which have a parameter in type of "struct interface". All incoming routes are set to default VRF. In fact, all routes in FIB are kept in default VRF. And the logic is not changed. Signed-off-by: Feng Lu <lu.feng@6wind.com> Reviewed-by: Alain Ritoux <alain.ritoux@6wind.com> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: Vincent JARDIN <vincent.jardin@6wind.com> [DL: conflicts fixed + compile warning fix] Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* lib, zebra: move "struct vrf" to be a lib moduleFeng Lu2015-06-021-148/+122
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously "struct vrf" is defined locally in zebra. Now it is moved to be a lib module. This is the first step to support multi-VRF in quagga. The implementation is splitted into small patches for the purpose of easy review. * lib: "struct vrf" with basic members is defined in vrf.c. The member "void *info" is for user data. Some basic functions are defined in vrf.c for adding/deleting/ looking up a VRF, scanning the VRF table and initializing the VRF module. The type "vrf_id_t" is defined specificly for VRF ID. * zebra: The previous "struct vrf" is re-defined as "struct zebra_vrf"; and previous "vrf" variables are renamed to "zvrf". The previous "struct vrf" related functions are removed from zbera_rib.c. New functions are defined to maintain the new "struct zebra_vrf". The names vrf_xxx are reserved for the functions in VRF module. So: - the previous vrf_table() are renamed to zebra_vrf_table(); - the previous vrf_static_table() are renamed to zebra_vrf_static_table(). The main logic is not changed. BTW: Add a statement to zebra_snmp.c telling that the SNMP is running only for the MIBs in the default VRF. Signed-off-by: Feng Lu <lu.feng@6wind.com> Reviewed-by: Alain Ritoux <alain.ritoux@6wind.com> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: Vincent JARDIN <vincent.jardin@6wind.com> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: use prefix2str for logging where possibleTimo Teräs2015-06-011-46/+34
| | | | | | | This makes code more robust, consice and readable. Signed-off-by: Timo Teräs <timo.teras@iki.fi> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* *: use void * for printing pointersDavid Lamparter2015-04-211-25/+29
| | | | | | | | | On higher warning levels, compilers expect %p printf arguments to be void *. Since format string / argument warnings can be useful otherwise, let's get rid of this noise by sprinkling casts to void * over printf calls. Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra, ripngd: remove ::/64 special-casingDavid Lamparter2015-02-141-25/+0
| | | | | | | | | | | | | | | | | In the 90ies, IPv4 was believed to exist within IPv6, with some kernels implementing this belief in code... Our code here is keyed to "#ifdef LINUX", yet no Linux from the past 10 years had this, making the code completely useless. FreeBSD 10.0 does in fact have a "::/96 via ::1 dev lo0 reject" route. IMHO we shouldn't mess with that, the admin can filter as neccessary anyway. Signed-off-by: David Lamparter <equinox@opensourcerouting.org> Acked-by: Greg Troxel <gdt@ir.bbn.com> Acked-by: Feng Lu <lu.feng@6wind.com> [DL: slightly adjusted commit message to remove misunderstanding] Acked-by: Paul Jakma <paul@jakma.org>
* build: remove INRIA, NRL and MUSICA IPv6 quirksDavid Lamparter2015-02-141-2/+2
| | | | | | | | | Valar dohaeris. Signed-off-by: David Lamparter <equinox@opensourcerouting.org> Acked-by: Greg Troxel <gdt@ir.bbn.com> Acked-by: Feng Lu <lu.feng@6wind.com> Acked-by: Paul Jakma <paul@jakma.org>
* zebra: make MRIB lookup behaviour switchableDavid Lamparter2015-02-061-0/+75
| | | | | | | | | | | | | | | depending on the usage scenario (and availability of multitopology IGP protocols, which is currently zero in Quagga), different approaches of Multicast RPF lookups are useful. Reference behaviours from commercial vendors are urib-only/mrib-only (Juniper, depending on inet.2 availability) and lowest-distance (Cisco). As we are currently without MT IGP support, mrib-first seems the most useful default for Quagga. Cc: Everton Marques <everton.marques@gmail.com> Cc: Balaji G <balajig81@gmail.com> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: return route_node from rib_match_ipv4_safiDavid Lamparter2015-02-061-7/+14
| | | | | | | | | | The multicast code needs to know the route_node in addition to the rib entry in order to perform distance or prefix-length comparisons. Add it as optional "out" pointer parameter. Cc: Everton Marques <everton.marques@gmail.com> Cc: Balaji G <balajig81@gmail.com> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: dummy kernel "install" multicast routesDavid Lamparter2015-02-061-8/+29
| | | | | | | | | | | | | | | | | This is a followup to 9511633 ("zebra: MBGP routes should not be installed in the kernel"), which was correct in disabling MRIB routes being installed in the kernel, yet broke the MRIB since now routes were never marked as active. Hence, push down the check into the kernel install functions, so that the routes are still marked active. At the same time, the FPM calls get a check each since otherwise we'd bump the FPM interface on MRIB updates. Fixes: 9511633 ("zebra: MBGP routes should not be installed in the kernel") Cc: Everton Marques <everton.marques@gmail.com> Cc: Balaji G <balajig81@gmail.com> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: mrib: static route supportEverton Marques2015-02-061-16/+14
| | | | | | | | | | | | | | | | | With the MRIB being independent from the Unicast RIB, there's currently now way to add static routes to the MRIB. Address that by adding a separate set of commands for MRIB static routes. Combines these original patches: - zebra: mrib: ip mroute command to add unicast route to MRIB for multicast RPF. - zebra: mrib: no ip mroute: Fix removal of static multicast RPF route. - zebra: mrib: remove unused static_add/delete_ipv4 - zebra: Cleanups to zebra_rib. - pimd: Merge pim-only branch. Cc: Everton Marques <everton.marques@gmail.com> Cc: Balaji G <balajig81@gmail.com> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: kill rib_match_ipv4()David Lamparter2015-02-061-6/+0
| | | | | | | | | Since this function is internal to zebra, there is no reason to keep this one-line indirect wrapper to rib_match_ipv4_safi() around. Cc: Everton Marques <everton.marques@gmail.com> Cc: Balaji G <balajig81@gmail.com> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: mrib: Include BGP routes in RPF lookupsEverton Marques2015-02-061-4/+3
| | | | | | | | | | The rib_match_ipv4() function was previously used only for iBGP recursive nexthop lookups, which ignore eBGP routes. This is not desirable for PIM RPF lookups, which may well use an eBGP route. Cc: Everton Marques <everton.marques@gmail.com> Cc: Balaji G <balajig81@gmail.com> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: point rib_match_ipv4() to ._safi()Everton Marques2015-02-061-58/+1
| | | | | | | | | Since rib_match_ipv4() is just rib_match_ipv4_safi() for SAFI_UNICAST, the former can be removed and pointed to the latter instead. Cc: Balaji G <balajig81@gmail.com> Cc: Everton Marques <everton.marques@gmail.com> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: add rib_match_ipv4_safi()Everton Marques2015-02-061-0/+57
| | | | | | | | This is the same as rib_lookup_ipv4(), without the SAFI hardcoded. Cc: Balaji G <balajig81@gmail.com> Cc: Everton Marques <everton.marques@gmail.com> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: identify MRIB on debug messagesDavid Lamparter2015-02-061-1/+4
| | | | | | | | since the same code handles both URIB and MRIB, the debug messages can get rather confusing if the RIB isn't identified. Mark the MRIB in debug messages so we can distinguish that. Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: factor out rib debug logsDavid Lamparter2015-02-061-63/+51
| | | | | | | | | | Introduces a logging function that takes a struct route_node * argument, and prefixes log output with that node's prefix. While this removes some duplication, it will also later be useful for srcdest route nodes. Behaviour before and after the patch should be exactly identical. Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* Make static IPv6 routes respect non-default routing tables.Dinesh G Dutt2014-11-111-0/+1
| | | | | | Signed-off-by: Nolan Leake <nolan@cumulusnetworks.com> Reviewed-by: Shrijeet Mukherjee <shm@cumulusnetworks.com> Reviewed-by: Paul Jakma <paul@opensourcerouting.org>
* zebra: MBGP routes should not be installed in the kernelBalaji2014-10-301-2/+8
| | | | | | | | | | | MBGP routes are used only for PIM RPF checks and hence should not be installed in the kernel's FIB. Ignore route node set to Multicast SAFI. Signed-off-by: Balaji.G <balajig81@gmail.com> Acked-by: Everton Marques <everton.marques@gmail.com> [pushed down rn->table->info assignment below assert] Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* *: nuke ^L (page feed)David Lamparter2014-06-041-10/+10
| | | | | | | | | | | | | | Quagga sources have inherited a slew of Page Feed (^L, \xC) characters from ancient history. Among other things, these break patchwork's XML-RPC API because \xC is not a valid character in XML documents. Nuke them from high orbit. Patches can be adapted simply by: sed -e 's%^L%%' -i filename.patch (you can type page feeds in some environments with Ctrl-V Ctrl-L) Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: apply syntactic sugar to rib_dump()David Lamparter2014-04-011-7/+9
| | | | | | | strip the explicit __func__ present on all calls and make the prefix argument a transparent union. Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: log routes w/o gateway in rib_delete_ipv4Christian Franke2014-02-111-6/+14
| | | | | | Signed-off-by: Christian Franke <chris@opensourcerouting.org> Acked-by: Feng Lu <lu.feng@6wind.com> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: make rib_dump() compatible with IPv6 RIBVincent Bernat2013-10-221-8/+23
| | | | | | [DL: resolved conflicts in zebra_rib.c] [DL: fix usage with --disable-ipv6] Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: apply route-maps for interface routesChristian Franke2013-09-191-0/+12
| | | | | Signed-off-by: Christian Franke <chris@opensourcerouting.org> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: fix recursive-routes via ifindex routesChristian Franke2013-09-191-16/+49
| | | | | Signed-off-by: Christian Franke <chris@opensourcerouting.org> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: handle blackholes encountered in recursive resolutionChristian Franke2013-09-191-0/+12
| | | | | Signed-off-by: Christian Franke <chris@opensourcerouting.org> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: rework recursive route resolutionChristian Franke2013-09-191-88/+176
| | | | | | | | | | | | | | | Change the datastructure for recursive routes. This brings the following benefits: By using struct nexthop also to store nexthops obtained by recursive resolution, we can get rid of quite a bit of code duplication in the fib management. (rt_netlink, rt_socket, ...) With the new datastructure we can make use of all available paths when recursive routes are resolved with multipath routes. Signed-off-by: Christian Franke <chris@opensourcerouting.org> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: don't overrun afi/safi array boundariesLeonid Rosenboim2013-01-141-0/+6
| | | | | | | | zebra was not checking afi/safi values. This was leading to crashes where these values were coming directly from some protocol's on-wire fields. Safeguarding them in zebra is a good start. Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: add module to communicate routes to FPMAvneesh Sachdev2012-11-301-0/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enhance zebra to send routes to the (optional) Forwarding Path Manager component using the interface defined by fpm/fpm.h. * configure.ac - Add --enable-fpm flag. The FPM-related code in zebra is activated only if the build is configured with '--enable-fpm'. - Add HAVE_NETLINK automake conditional. This allows us to conditionally build netlink-dependent C code. * zebra/{rib.h,zebra_rib.c} - Add the 'fpm_q_entries' field to the rib_dest_t structure. This allows dests to be placed on the fpm queue. - Define a couple new rib_dest_t flags that hold FPM-related state. - Invoke the zfpm_trigger_update() function for a route_node whenever the information to be sent to the FPM changes. - rib_can_delete_dest(): Return FALSE if we have to update the FPM about the given dest. This ensures that the dest is not deleted even if there are no ribs hanging off of it. * zebra/zebra_fpm.c This file holds most of the code for interacting with the FPM. - If quagga was configured with '--enable-fpm', periodically try to connect to the FPM. - When the connection comes up, enqueue all relevent dests to the FPM queue. - When the FPM socket is readable, dequeue the next rib_dest_t from the FPM queue, encode it in to a message and send the message to the FPM. - When the connection to the FPM goes down, remove all dests from the FPM queue, and then start trying to connect to the FPM again. - Expose the following new operational commands: show zebra fpm stats clear zebra fpm stats * zebra/zebra_fpm_netlink.c - zfpm_netlink_encode_route(): Function to encode information about a rib_dest_t in netlink format. * zebra/zebra_fpm_private.h Private header file for the zebra FPM module. * zebra/zebra_fpm.h Header file exported by zebra FPM module to the rest of zebra. * zebra/debug.c Add the 'debug zebra fpm' command. * zebra/main.c Initialize the zebra-FPM code on startup. * zebra/misc_null.c Add stub for zfpm_trigger_update(). * zebra/Makefile.am - Include new file zebra_fpm.c in build. - Include zebra_fpm_netlink.c in build if HAVE_NETLINK is defined. * vtysh/Makefile.am Include zebra_fpm.c in list of files that define cli commands. Signed-off-by: Avneesh Sachdev <avneesh@opensourcerouting.org> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: extern/extract some functions from rt_netlink.cAvneesh Sachdev2012-11-301-0/+25
| | | | | | | | | | | | | | | | | | | | | | | | | * zebra/{rib.h,zebra_rib.c} Add nexthop_type_to_str(), which returns a human-readable string corresponding to a nexthop type. * zebra/rt_netlink.[hc] - Add new header file that exposes some existing and new netlink-related functions from rt_netlink.c to the rest of zebra. addattr32 addattr_l rta_addattr_l nl_msg_type_to_str (new) nl_rtproto_to_str (new) - Use nexthop_type_to_str() instead of the static array 'nexthop_types_desc'. Signed-off-by: Avneesh Sachdev <avneesh@opensourcerouting.org> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: add iterator for walking all tables in RIBAvneesh Sachdev2012-11-301-0/+103
| | | | | | | | | | | | | | | | | | | | | | * lib/zebra.h Add macro ZEBRA_NUM_OF, which returns the number of elements in a static array. * zebra/rib.h Add the rib_tables_iter_t structure and associated functions, which allow one to walk all tables in the rib. * zebra/zebra_rib.c - Add vrf_id_get_next() to retrieve the first VRF id (if any) that is greater than a given VRF id. - Add rib_tables_iter_next(). Signed-off-by: Avneesh Sachdev <avneesh@opensourcerouting.org> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: add way to determine VRF/AFI/SAFI of tableAvneesh Sachdev2012-11-301-4/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | Add some code that allows us to determine which VRF and AFI/SAFI a given RIB table corresponds to. * zebra/rib.h Add rib_table_info_t structure, which contains information about the VRF, AFI and SAFI that a table is for. * zebra/zebra_rib.c - Add the vrf_table_create() function, which creates a table and sets its 'info' pointer to a newly created rib_table_info_t. The 'info' pointer allows us to go from a route_node or a table to the associated vrf. - vrf_alloc(): Use vrf_create_table() to create tables. * lib/memtypes.c Add memory type for rib_table_info_t. Signed-off-by: Avneesh Sachdev <avneesh@opensourcerouting.org> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* zebra: add structure to hold per-prefix state in RIBAvneesh Sachdev2012-11-301-73/+140
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add the rib_dest_t structure to hold per-prefix state in the routing information base. This gives us an appropriate place to maintain the queueing state of a route_node. Queuing state was previously being stored on the first rib in the list of ribs hanging off the route_node. * zebra/rib.h - Add new structure rib_dest_t. - Remove the rn_status field from 'struct rib', it is no longer required. - Add macros (RNODE_FOREACH_RIB, RNODE_FOREACH_RIB_SAFE) for walking all 'struct ribs' corresponding to a route_node. These hide the fact that there is an intermediate rib_dest_t structure. - Add a few utility inlines to go between a rib_dest_t and associated structures. * zebra/zebra_rib.c - rib_link()/rib_unlink() Tweak for new behavior, where the 'info' pointer of a route_node points to a rib_dest_t. The list of ribs for a prefix now hangs off of the dest. Change the way we ref count route_nodes. We now hold a single ref count on a route_node if there is a corresponding rib_dest_t. - Maintain the queuing state of a route_node on the flags field of the rib_dest_t. - Add the rib_gc_dest() function, which deletes a rib_dest_t if it is no longer required. A rib_dest_t can be deleted iff there are no struct ribs hanging off of it. - Call rib_gc_dest() any time we unlink a rib from the rib_dest_t. Currently we only need to call it once, just before we return from rib_process(). * zebra/{redistribute,zebra_rib,zebra_snmp,zebra_vty}.c Use new macros to walk over route_node ribs. * lib/memtypes.c Add memory type for rib_dest_t. Signed-off-by: Avneesh Sachdev <avneesh@opensourcerouting.org> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
* *: use array_size() helper macroBalaji.G2012-10-251-1/+1
| | | | | | | | Use the array_size() helper macro. Replaces several instances of local macros with the same definition. Reviewed-by: Scott Feldman <sfeldma@cumulusnetworks.com> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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