B.A.T.M.A.N

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[B.A.T.M.A.N.] [PATCHv13 0/4] Multicast optimizations for bridges
by Linus Lüssing 05 May '16

05 May '16

This patchset enables the usage of the batman-adv multicast optimizations for scenarios involving bridges on top of e.g. bat0, too. The first one alters the forwarding behaviour for IGMP and MLD reports which is a prerequisite before enabling multicast optimizations in bridged setups. It also increases the MCAST TVLV version number to 2. More on the issue of insufficient report handling with the v1 MCAST TVLV can be found here: http://www.open-mesh.org/projects/batman-adv/wiki/Multicast-optimizations-l… The second patch finally enables the multicast optimizations for bridged setups. Along come two more patches adding according debugging facilities to make it possible for the user to check why the multicast optimizations might not work ideally to give hints about what they might change about their topology. This patchset can be found in the current linus/multicast-bridge branch. Cheers, Linus ----- Changes in v13: * Substituted a non-breaking space with a boring one * Dropped compat code for kernels < 3.2 * Removed mcast tvlv container and handler support for v1 completely * Rebase to current master branch (automatic 3-way merge without issues) Changes in v12: * Rebase to current master branch (automatic 3-way merge, then batadv_hardif_free_ref() -> batadv_hardif_put()) * Adding Linux upstream fix to compat-sources/net/core/skbuff.c -> "net: fix bridge multicast packet checksum validation" (9b368814b33, present since v4.5, queued for stable) Changes in v11: * Rewording of commit messages (PATCH 1/4+2/4) * Rebasing to master (solving conflict with kernel doc "return" changes) * Updating kerneldoc to proper "Return:" syntax * Using eth_zero_addr() over memset (fixes a new checkpatch warning) * Changing uint8_t to u8 and uint32_t to u32 (fixes new checkpatch warnings) * Turning some batadv_dbg() into batadv_info(), making querier presence more visible (i.e. in dmesg too) (PATCH 3/4) Changes in v10: - PATCH 1/4: * Former "[PATCH 4/4] batman-adv: Forward IGMP/MLD reports to selected querier (only)" substituted by the interim branch "batman-adv: Always flood IGMP/MLD reports" with the following changes: * Increased compatibility to mcast-v1-tvlv nodes by registering a v1 tvlv container and handler, too (note: PATCH 2/4 needs to still unregister the handler if the node is bridged bc. it can't "trust" v1 nodes) * Removed skb_set_network_header() call (extra patch pending for review for maint) * Compared to patchset v9 this substitution makes things compilable again for kernels < 2.6.35 - PATCH 2/4: * Moved enum introduction of BATADV_DBG_MCAST to PATCH 3/4, not needed in PATCH 2/4 yet * Adjusted compat code to new compat layout * Adjustments to batadv_mcast_mla_tvlv_update() to fit now preceding PATCH 1/4 * bat_priv->mcast.bridged flag already introduced here (instead of in PATCH 3/4) because we need it for the new mcast-v1-tvlv handling --- Interim Changlog of "batman-adv: Always flood IGMP/MLD reports" v1: * Removed query snooping and state * Squashed all three patches into one * Renamed "batadv_mcast_tvlv_ogm_handler_v1()" to *_v2() * Added explicit icmpv6.h include * Rebased on top of master ----- Interim Interim Changelog of "batman-adv: Unicasting multicast reports to querier-node only" v6: * compat: copied copyright headers from original upstream c files * compat: unified ordering in compat c files: -> copyright header, then includes, then kernel specific functions v5: * Removed RFC tag: Needed exports got merged to net-next and are going to be available with Linux 4.2 * Redid compat solution - now fully backwards compatible down to 2.6.33 v4: * excluded bridge part from this patchset, they should hopefully be added to net-next soon * Added a compat solution (PATCH 3/3) * Removed Kconfig-depends as by David's suggestion the needed parsing functions for MLD are going to be forced built-ins even if IPv6 is going to be built as a module * Removed unused variable 'int ret' in batadv_mcast_is_report_ipv6() * Adjusted to new folder structure v3: * Adding Kconfig-depends and #if's (so basically adding similar dependancy constraints as the bridge code has, except that there are no depends if batman-adv gets compiled without multicast optimizations) -> the case of IPv6=M and batman-adv=y is still impossible if multicast optimizations are enabled; but I don't see the practical demand for that either - people who use IPv6 as a module will probably also want to use batman-adv as a module v2: * various bugfixes (now runtime tested, too - should(tm) work) * added netdev+bridge mailinglists ----- --- Changes in v9: - PATCH 1/4: * fix: added compat code for pr_warn_once() * compat fix for bridge export stubs: fixes compile error with kernels < 3.16 without bridge (snooping) support - PATCH 2/4: * perform updates of variables within bat_priv->mcast.querier_ipv{4,6} individually (there's a new, third member in 4/4 which shouldn't be overriden) * PATCH 4/4: NEW Changes in v8 (thanks to Simon's suggestions): - PATCH 2/3: * print shadowing status log of an appearing and shadowing querier, too (the bridge-querier-existence call has an additional 10s delay to ensure reports had their time to arrive - the bridge-querier-port call doesn't have that) - PATCH 3/3: * changing debugfs output from "+" and "-" to "U/4/6" and "." * fixing "no querier present" logic (introduced in [PATCHv7 3/3]) Changes in v7 (thanks to Simon's suggestions): - PATCH 2/3: * renaming old/new_querier to old/new_state * slightly extended kerneldoc of batadv_mcast_querier_log() * removing words "good" and "bad" from debug output * simplified batadv_mcast_flags_log() * assignment instead of memset in batadv_mcast_mla_tvlv_update() and batadv_softif_init_late() * simple struct member assignments instead of one complex struct assigment * removing unnecessary memcmp's * substituting return statement for an if-block in batadv_mcast_querier_log() and batadv_mcast_bridge_log() * print "Unsnoopables(U)-flag" instead of just "U-flag" - PATCH 3/3: * use bat_priv values instead of querying bridge ABI in batadv_mcast_flags_print_header() Changes in v6: * New PATCH 2/3 inserted, moving logging to separate patch * More verbose logging added to PATCH 2/3: Bridge and querier state changes are logged too * upper case to lower case for kernel doc of batadv_mcast_flags_open (PATCH 2/3) * Adding note to kernel doc of batadv_mcast_get_bridge about increased refcount (PATCH 1/3) * Printing some lines about current bridge and querier state to debugfs too (PATCH 3/3) Changes in v5 (PATCH 2/2 only): * s/dat_cache/mcast_flags/ in kerneldoc (copy&paste error) Changes in v4 (PATCH 2/2 only): * initial {ad,e}dition of this patch Changes in v3 (PATCH 1/2 only): * Removed "RFC" tag in title again: The stubs and new export are upstream in net-next and therefore going to be included in 3.17 * Added some debug output: * Two warning messages: -> Old kernel version or no bridge IGMP/MLD snooping compiled * New batman-adv log-level "mcast": -> Logging mcast flag changes (a third debugging facility, a new table for debugfs for a global mcast flag overview will be added in a separate patch later as discussed with Simon) Changes in v2 (PATCH 1/2 only): * fetching local (= on this same kernel) multicast listeners from the bridge instead of the bat0 interface if a bridge is present - just like ip addresses and routes should be used from br0, the same goes for multicast listeners * beautification of batadv_mcast_mla_br_addr_cpy(), now using already present functions from the kernel instead of own, hackish approach * changed names of some goto-labels (not using "skip" anymore) * using new, third bridge multicast export (because this export is not upstream yet, I've added the "RFC" in the title): br_multicast_has_querier_anywhere() * adding compat stubs for two bridge multicast exports, to make batman-adv compile- and usable even if a 3.16 kernel was compiled without bridge code - the stubs are supposed to be upstream in the bridge code in 3.17 (therefore just 'compat') * updated kerneldocs for batadv_mcast_mla_bridge_get() and batadv_mcast_mla_softif_get() * The two sentences in the commit message starting with "Queriers: ..." were slightly modified to include the third bridge multicast export

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[B.A.T.M.A.N.] [PATCH 1/2] batman-adv: Remove unused work_struct forward declaration
by Sven Eckelmann 05 May '16

05 May '16

The only function declaration using the "struct work_struct" was removed and thus this forward declaration should also be removed. Fixes: 0d8468553c3c ("batman-adv: remove ogm_emit and ogm_schedule API calls") Signed-off-by: Sven Eckelmann <sven.eckelmann(a)open-mesh.com> --- Problem was found by https://lists.open-mesh.org/pipermail/linux-merge/2016-May/003146.html net/batman-adv/send.h | 1 - 1 file changed, 1 deletion(-) diff --git a/net/batman-adv/send.h b/net/batman-adv/send.h index f6fda19..7cecb75 100644 --- a/net/batman-adv/send.h +++ b/net/batman-adv/send.h @@ -26,7 +26,6 @@ #include "packet.h" struct sk_buff; -struct work_struct; void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet); int batadv_send_skb_to_orig(struct sk_buff *skb, -- 2.8.1

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[B.A.T.M.A.N.] [PATCH next] batman-adv: replace dev->trans_start update with helper
by Sven Eckelmann 05 May '16

05 May '16

From: Florian Westphal <fw(a)strlen.de> Replace all trans_start updates with netif_trans_update helper. change was done via spatch: struct net_device *d; @@ - d->trans_start = jiffies + netif_trans_update(d) Compile tested only. Signed-off-by: Florian Westphal <fw(a)strlen.de> Signed-off-by: Sven Eckelmann <sven.eckelmann(a)open-mesh.com> --- Warning: untested compat-include/linux/netdevice.h | 10 ++++++++++ net/batman-adv/soft-interface.c | 2 +- 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/compat-include/linux/netdevice.h b/compat-include/linux/netdevice.h index f47f5c3..fb5b519 100644 --- a/compat-include/linux/netdevice.h +++ b/compat-include/linux/netdevice.h @@ -74,4 +74,14 @@ #endif /* < KERNEL_VERSION(4, 5, 0) */ +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0) + +#define netif_trans_update batadv_netif_trans_update +static inline void batadv_netif_trans_update(struct net_device *dev) +{ + dev->trans_start = jiffies; +} + +#endif /* < KERNEL_VERSION(4, 7, 0) */ + #endif /* _NET_BATMAN_ADV_COMPAT_LINUX_NETDEVICE_H_ */ diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index 31d1df2..b349287 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -207,7 +207,7 @@ static int batadv_interface_tx(struct sk_buff *skb, if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE) goto dropped; - soft_iface->trans_start = jiffies; + netif_trans_update(soft_iface); vid = batadv_get_vid(skb, 0); ethhdr = eth_hdr(skb); -- 2.8.1

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[B.A.T.M.A.N.] pull request: batman-adv 20160504
by Antonio Quartulli 04 May '16

04 May '16

Hello David, this is a pull request intended for net-next. In this batch you don't have any patch that depends on our fixes, therefore you can safely merge it even if the net tree has not been merged yet. In this patchset you basically have some cleanup work, code refactoring, style fixes and two updates for the MAINTAINERS file. Please pull or let me know of any problem! Thanks a lot, Antonio The following changes since commit e03179fe78d5b39dbf3e8b0b50f7c406514b15c7: net: ethernet: fec_mpc52xx: move to new ethtool api {get|set}_link_ksettings (2016-05-03 13:03:53 -0400) are available in the git repository at: git://git.open-mesh.org/linux-merge.git tags/batman-adv-for-davem for you to fetch changes up to 64ae74455371a40bc9f9c8325eb4c37f2978c95f: batman-adv: Split batadv_iv_ogm_orig_del_if function (2016-05-04 02:22:03 +0800) ---------------------------------------------------------------- In this pull request you have: - two changes to the MAINTAINERS file where one marks our mailing list as moderated and the other adds a missing documentation file - kernel-doc fixes - code refactoring and various cleanups ---------------------------------------------------------------- Antonio Quartulli (2): batman-adv: use static string for table headers batman-adv: fix wrong names in kerneldoc Geliang Tang (2): batman-adv: use list_for_each_entry_safe batman-adv: use to_delayed_work Simon Wunderlich (4): batman-adv: Start new development cycle batman-adv: fix debuginfo macro style issue batman-adv: move and restructure batadv_v_ogm_forward batman-adv: Merge batadv_v_ogm_orig_update into batadv_v_ogm_route_update Sven Eckelmann (7): MAINTAINERS: Mark BATMAN ADVANCED mailing list as moderated MAINTAINERS: Add BATMAN ADVANCED documentation files batman-adv: Fix checkpatch warning about 'unsigned' type batman-adv: Fix kerneldoc for batadv_compare_claim batman-adv: Add kernel-doc for batadv_interface_rx batman-adv: Fix function names on new line starting with '*' batman-adv: Split batadv_iv_ogm_orig_del_if function MAINTAINERS | 5 +- net/batman-adv/bat_iv_ogm.c | 123 +++++++++++++------- net/batman-adv/bat_v.c | 9 +- net/batman-adv/bat_v_ogm.c | 205 ++++++++++++++++----------------- net/batman-adv/bridge_loop_avoidance.c | 19 ++- net/batman-adv/debugfs.c | 19 +-- net/batman-adv/distributed-arp-table.c | 8 +- net/batman-adv/fragmentation.c | 12 +- net/batman-adv/icmp_socket.c | 24 ++-- net/batman-adv/main.c | 8 +- net/batman-adv/main.h | 5 +- net/batman-adv/multicast.c | 11 +- net/batman-adv/network-coding.c | 20 ++-- net/batman-adv/originator.c | 4 +- net/batman-adv/packet.h | 2 +- net/batman-adv/send.c | 4 +- net/batman-adv/soft-interface.c | 20 +++- net/batman-adv/translation-table.c | 11 +- 18 files changed, 277 insertions(+), 232 deletions(-)

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[B.A.T.M.A.N.] [RFC v4] throughput meter on steroids^W netlink
by Sven Eckelmann 04 May '16

04 May '16

Hi, I was asked by the batman-adv maintainers to port the tp_meter to netlink. And I shouldn't do it with the patches from Andrew/Matthias applied but with only a small part of patch 4. I know, this isn't the nicest move but it allowed me to restructure the first commit a little bit. I've extracted the part which introduced the netlink family + a restructured batman_adv.h. I've also added the part which introduces the generic mesh information as extra patch (+kerneldoc). This added some attributes which I need in tp_meter. But I can also remove the patch and only merge the necessary parts. @Andrew, I hope you don't take it the wrong way. I really like your work and even borrowed parts of the code for the tp_meter interface. So you are now allowed to criticize the hell out of the changes and request some free beer from Antonio, Marek and Simon :). But I hope that you like the adjustments to the initial parts (at least a little bit). You would have to rebase your changes (which I still want to get integrated) on top when these things here are merged. I would also be willing to do the rebase myself and send you the result (so you can add the kerneldoc and maybe make further adjustments). The only "big" conflicts I see are related to the order of attributes. But this was a long day for me and I may have forgotten something. @the_rest: Do you find the bugs introduced by moving it to netlink? The one which I know about is the inability to receive signals while the kernel is doing the wait_event (So the BATADV_CMD_TP_METER_CANCEL doesn't work at all). I am waiting for recommendations. The one which comes to my mind is not to wait for the thing to finish but to just return immediately. The client would then have to some kind of event listener enabled which waits until the thing finished. This approach would also require some kind of session info exchange. Does anyone else have a good idea? Kind regards, Sven

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[B.A.T.M.A.N.] pull request [net]: batman-adv 20160430
by Antonio Quartulli 04 May '16

04 May '16

Hello David, this is another pull request intended for net. I know that I sent another batch a few days ago, but after having gone through my queue I thought that merging these last 4 patches would still be worth it (there won't be any other pull request for linux-4.6 :)). The description of the changes follows below. Please pull or let me know of any issue! Thanks a lot, Antonio The following changes since commit 1dfcd832b1a9ed45edac15b31d079b805fa0ae2a: Merge branch 'bpf-fixes' (2016-04-28 17:29:46 -0400) are available in the git repository at: git://git.open-mesh.org/linux-merge.git tags/batman-adv-fix-for-davem for you to fetch changes up to abe59c65225ccd63a5964e2f2a73dd2995b948e7: batman-adv: Fix reference counting of hardif_neigh_node object for neigh_node (2016-04-29 19:46:11 +0800) ---------------------------------------------------------------- In this small batch of patches you have: - a fix for our Distributed ARP Table that makes sure that the input provided to the hash function during a query is the same as the one provided during an insert (so to prevent false negatives), by Antonio Quartulli - a fix for our new protocol implementation B.A.T.M.A.N. V that ensures that a hard interface is properly re-activated when it is brought down and then up again, by Antonio Quartulli - two fixes respectively to the reference counting of the tt_local_entry and neigh_node objects, by Sven Eckelmann. Such bug is rather severe as it would prevent the netdev objects references by batman-adv from being released after shutdown. ---------------------------------------------------------------- Antonio Quartulli (2): batman-adv: fix DAT candidate selection (must use vid) batman-adv: B.A.T.M.A.N V - make sure iface is reactivated upon NETDEV_UP event Sven Eckelmann (2): batman-adv: Fix reference counting of vlan object for tt_local_entry batman-adv: Fix reference counting of hardif_neigh_node object for neigh_node net/batman-adv/bat_v.c | 12 ++++++++++ net/batman-adv/distributed-arp-table.c | 17 ++++++++------ net/batman-adv/hard-interface.c | 3 +++ net/batman-adv/originator.c | 16 ++++--------- net/batman-adv/translation-table.c | 42 ++++------------------------------ net/batman-adv/types.h | 7 ++++++ 6 files changed, 41 insertions(+), 56 deletions(-)

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[B.A.T.M.A.N.] [PATCH] batman-adv: remove ogm_emit and ogm_schedule API calls
by Antonio Quartulli 04 May '16

04 May '16

The ogm_emit and ogm_schedule API calls were rather tight to the B.A.T.M.A.N. IV logic and therefore rather difficult to use with other algorithm implementations. Remove such calls and move the surrounding logic into the B.A.T.M.A.N. IV specific code. Signed-off-by: Antonio Quartulli <a(a)unstable.cc> --- Changes from RFC: - batadv_send_outstanding_bat_ogm_packet() renamed to batadv_iv_send_outstanding_bat_ogm_packet() - batadv_iv_iface_enable() moved back to its original location (was moved by accident) - code has been tested in qemu with one node net/batman-adv/bat_iv_ogm.c | 68 ++++++++++++++++++++++++++++++++++++++--- net/batman-adv/bat_v.c | 10 ------ net/batman-adv/hard-interface.c | 3 -- net/batman-adv/main.c | 2 -- net/batman-adv/send.c | 61 +----------------------------------- net/batman-adv/send.h | 3 +- net/batman-adv/types.h | 4 --- 7 files changed, 66 insertions(+), 85 deletions(-) diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index ce2f203..4398969 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -58,6 +58,8 @@ #include "send.h" #include "translation-table.h" +static void batadv_iv_send_outstanding_bat_ogm_packet(struct work_struct *work); + /** * enum batadv_dup_status - duplicate status * @BATADV_NO_DUP: the packet is no duplicate @@ -730,7 +732,7 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff, /* start timer for this packet */ INIT_DELAYED_WORK(&forw_packet_aggr->delayed_work, - batadv_send_outstanding_bat_ogm_packet); + batadv_iv_send_outstanding_bat_ogm_packet); queue_delayed_work(batadv_event_workqueue, &forw_packet_aggr->delayed_work, send_time - jiffies); @@ -937,6 +939,19 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface) u16 tvlv_len = 0; unsigned long send_time; + if ((hard_iface->if_status == BATADV_IF_NOT_IN_USE) || + (hard_iface->if_status == BATADV_IF_TO_BE_REMOVED)) + return; + + /* the interface gets activated here to avoid race conditions between + * the moment of activating the interface in + * hardif_activate_interface() where the originator mac is set and + * outdated packets (especially uninitialized mac addresses) in the + * packet queue + */ + if (hard_iface->if_status == BATADV_IF_TO_BE_ACTIVATED) + hard_iface->if_status = BATADV_IF_ACTIVE; + primary_if = batadv_primary_if_get_selected(bat_priv); if (hard_iface == primary_if) { @@ -1778,6 +1793,45 @@ static void batadv_iv_ogm_process(const struct sk_buff *skb, int ogm_offset, batadv_orig_node_put(orig_node); } +static void batadv_iv_send_outstanding_bat_ogm_packet(struct work_struct *work) +{ + struct delayed_work *delayed_work; + struct batadv_forw_packet *forw_packet; + struct batadv_priv *bat_priv; + + delayed_work = to_delayed_work(work); + forw_packet = container_of(delayed_work, struct batadv_forw_packet, + delayed_work); + bat_priv = netdev_priv(forw_packet->if_incoming->soft_iface); + spin_lock_bh(&bat_priv->forw_bat_list_lock); + hlist_del(&forw_packet->list); + spin_unlock_bh(&bat_priv->forw_bat_list_lock); + + if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_DEACTIVATING) + goto out; + + batadv_iv_ogm_emit(forw_packet); + + /* we have to have at least one packet in the queue to determine the + * queues wake up time unless we are shutting down. + * + * only re-schedule if this is the "original" copy, e.g. the OGM of the + * primary interface should only be rescheduled once per period, but + * this function will be called for the forw_packet instances of the + * other secondary interfaces as well. + */ + if (forw_packet->own && + forw_packet->if_incoming == forw_packet->if_outgoing) + batadv_iv_ogm_schedule(forw_packet->if_incoming); + +out: + /* don't count own packet */ + if (!forw_packet->own) + atomic_inc(&bat_priv->batman_queue_left); + + batadv_forw_packet_free(forw_packet); +} + static int batadv_iv_ogm_receive(struct sk_buff *skb, struct batadv_hard_iface *if_incoming) { @@ -1794,7 +1848,8 @@ static int batadv_iv_ogm_receive(struct sk_buff *skb, /* did we receive a B.A.T.M.A.N. IV OGM packet on an interface * that does not have B.A.T.M.A.N. IV enabled ? */ - if (bat_priv->bat_algo_ops->bat_ogm_emit != batadv_iv_ogm_emit) + if (bat_priv->bat_algo_ops->bat_iface_enable != + batadv_iv_ogm_iface_enable) return NET_RX_DROP; batadv_inc_counter(bat_priv, BATADV_CNT_MGMT_RX); @@ -2052,14 +2107,19 @@ out: return ret; } +static void batadv_iv_iface_activate(struct batadv_hard_iface *hard_iface) +{ + /* begin scheduling originator messages on that interface */ + batadv_iv_ogm_schedule(hard_iface); +} + static struct batadv_algo_ops batadv_batman_iv __read_mostly = { .name = "BATMAN_IV", + .bat_iface_activate = batadv_iv_iface_activate, .bat_iface_enable = batadv_iv_ogm_iface_enable, .bat_iface_disable = batadv_iv_ogm_iface_disable, .bat_iface_update_mac = batadv_iv_ogm_iface_update_mac, .bat_primary_iface_set = batadv_iv_ogm_primary_iface_set, - .bat_ogm_schedule = batadv_iv_ogm_schedule, - .bat_ogm_emit = batadv_iv_ogm_emit, .bat_neigh_cmp = batadv_iv_ogm_neigh_cmp, .bat_neigh_is_similar_or_better = batadv_iv_ogm_neigh_is_sob, .bat_neigh_print = batadv_iv_neigh_print, diff --git a/net/batman-adv/bat_v.c b/net/batman-adv/bat_v.c index 728c9d1..927d405 100644 --- a/net/batman-adv/bat_v.c +++ b/net/batman-adv/bat_v.c @@ -108,14 +108,6 @@ batadv_v_hardif_neigh_init(struct batadv_hardif_neigh_node *hardif_neigh) batadv_v_elp_throughput_metric_update); } -static void batadv_v_ogm_schedule(struct batadv_hard_iface *hard_iface) -{ -} - -static void batadv_v_ogm_emit(struct batadv_forw_packet *forw_packet) -{ -} - /** * batadv_v_orig_print_neigh - print neighbors for the originator table * @orig_node: the orig_node for which the neighbors are printed @@ -308,8 +300,6 @@ static struct batadv_algo_ops batadv_batman_v __read_mostly = { .bat_iface_update_mac = batadv_v_iface_update_mac, .bat_primary_iface_set = batadv_v_primary_iface_set, .bat_hardif_neigh_init = batadv_v_hardif_neigh_init, - .bat_ogm_emit = batadv_v_ogm_emit, - .bat_ogm_schedule = batadv_v_ogm_schedule, .bat_orig_print = batadv_v_orig_print, .bat_neigh_cmp = batadv_v_neigh_cmp, .bat_neigh_is_similar_or_better = batadv_v_neigh_is_sob, diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index 8c2f399..db2009d 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -553,9 +553,6 @@ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, batadv_hardif_recalc_extra_skbroom(soft_iface); - /* begin scheduling originator messages on that interface */ - batadv_schedule_bat_ogm(hard_iface); - out: return 0; diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c index 5f2974b..627d14e 100644 --- a/net/batman-adv/main.c +++ b/net/batman-adv/main.c @@ -569,8 +569,6 @@ int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops) !bat_algo_ops->bat_iface_disable || !bat_algo_ops->bat_iface_update_mac || !bat_algo_ops->bat_primary_iface_set || - !bat_algo_ops->bat_ogm_schedule || - !bat_algo_ops->bat_ogm_emit || !bat_algo_ops->bat_neigh_cmp || !bat_algo_ops->bat_neigh_is_similar_or_better) { pr_info("Routing algo '%s' does not implement required ops\n", diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c index f2f1256..638d1c1 100644 --- a/net/batman-adv/send.c +++ b/net/batman-adv/send.c @@ -428,27 +428,7 @@ int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb, orig_node, vid); } -void batadv_schedule_bat_ogm(struct batadv_hard_iface *hard_iface) -{ - struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); - - if ((hard_iface->if_status == BATADV_IF_NOT_IN_USE) || - (hard_iface->if_status == BATADV_IF_TO_BE_REMOVED)) - return; - - /* the interface gets activated here to avoid race conditions between - * the moment of activating the interface in - * hardif_activate_interface() where the originator mac is set and - * outdated packets (especially uninitialized mac addresses) in the - * packet queue - */ - if (hard_iface->if_status == BATADV_IF_TO_BE_ACTIVATED) - hard_iface->if_status = BATADV_IF_ACTIVE; - - bat_priv->bat_algo_ops->bat_ogm_schedule(hard_iface); -} - -static void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet) +void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet) { kfree_skb(forw_packet->skb); if (forw_packet->if_incoming) @@ -604,45 +584,6 @@ out: atomic_inc(&bat_priv->bcast_queue_left); } -void batadv_send_outstanding_bat_ogm_packet(struct work_struct *work) -{ - struct delayed_work *delayed_work; - struct batadv_forw_packet *forw_packet; - struct batadv_priv *bat_priv; - - delayed_work = to_delayed_work(work); - forw_packet = container_of(delayed_work, struct batadv_forw_packet, - delayed_work); - bat_priv = netdev_priv(forw_packet->if_incoming->soft_iface); - spin_lock_bh(&bat_priv->forw_bat_list_lock); - hlist_del(&forw_packet->list); - spin_unlock_bh(&bat_priv->forw_bat_list_lock); - - if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_DEACTIVATING) - goto out; - - bat_priv->bat_algo_ops->bat_ogm_emit(forw_packet); - - /* we have to have at least one packet in the queue to determine the - * queues wake up time unless we are shutting down. - * - * only re-schedule if this is the "original" copy, e.g. the OGM of the - * primary interface should only be rescheduled once per period, but - * this function will be called for the forw_packet instances of the - * other secondary interfaces as well. - */ - if (forw_packet->own && - forw_packet->if_incoming == forw_packet->if_outgoing) - batadv_schedule_bat_ogm(forw_packet->if_incoming); - -out: - /* don't count own packet */ - if (!forw_packet->own) - atomic_inc(&bat_priv->batman_queue_left); - - batadv_forw_packet_free(forw_packet); -} - void batadv_purge_outstanding_packets(struct batadv_priv *bat_priv, const struct batadv_hard_iface *hard_iface) diff --git a/net/batman-adv/send.h b/net/batman-adv/send.h index 6fd7270..f6fda19 100644 --- a/net/batman-adv/send.h +++ b/net/batman-adv/send.h @@ -28,6 +28,7 @@ struct sk_buff; struct work_struct; +void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet); int batadv_send_skb_to_orig(struct sk_buff *skb, struct batadv_orig_node *orig_node, struct batadv_hard_iface *recv_if); @@ -38,11 +39,9 @@ int batadv_send_broadcast_skb(struct sk_buff *skb, struct batadv_hard_iface *hard_iface); int batadv_send_unicast_skb(struct sk_buff *skb, struct batadv_neigh_node *neigh_node); -void batadv_schedule_bat_ogm(struct batadv_hard_iface *hard_iface); int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv, const struct sk_buff *skb, unsigned long delay); -void batadv_send_outstanding_bat_ogm_packet(struct work_struct *work); void batadv_purge_outstanding_packets(struct batadv_priv *bat_priv, const struct batadv_hard_iface *hard_iface); diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index 6a577f4..3687d19 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -1269,8 +1269,6 @@ struct batadv_forw_packet { * @bat_iface_update_mac: (re-)init mac addresses of the protocol information * belonging to this hard-interface * @bat_primary_iface_set: called when primary interface is selected / changed - * @bat_ogm_schedule: prepare a new outgoing OGM for the send queue - * @bat_ogm_emit: send scheduled OGM * @bat_hardif_neigh_init: called on creation of single hop entry * @bat_neigh_cmp: compare the metrics of two neighbors for their respective * outgoing interfaces @@ -1296,8 +1294,6 @@ struct batadv_algo_ops { void (*bat_iface_disable)(struct batadv_hard_iface *hard_iface); void (*bat_iface_update_mac)(struct batadv_hard_iface *hard_iface); void (*bat_primary_iface_set)(struct batadv_hard_iface *hard_iface); - void (*bat_ogm_schedule)(struct batadv_hard_iface *hard_iface); - void (*bat_ogm_emit)(struct batadv_forw_packet *forw_packet); /* neigh_node handling API */ void (*bat_hardif_neigh_init)(struct batadv_hardif_neigh_node *neigh); int (*bat_neigh_cmp)(struct batadv_neigh_node *neigh1, -- 2.8.2

2 1

[B.A.T.M.A.N.] [PATCH] batman-adv: remove unused callback from batadv_algo_ops struct
by Marek Lindner 04 May '16

04 May '16

Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> --- net/batman-adv/originator.c | 5 ----- net/batman-adv/types.h | 3 --- 2 files changed, 8 deletions(-) diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c index 1ff4ee4..dd71682 100644 --- a/net/batman-adv/originator.c +++ b/net/batman-adv/originator.c @@ -251,10 +251,8 @@ static void batadv_neigh_node_release(struct kref *ref) struct hlist_node *node_tmp; struct batadv_neigh_node *neigh_node; struct batadv_neigh_ifinfo *neigh_ifinfo; - struct batadv_algo_ops *bao; neigh_node = container_of(ref, struct batadv_neigh_node, refcount); - bao = neigh_node->orig_node->bat_priv->bat_algo_ops; hlist_for_each_entry_safe(neigh_ifinfo, node_tmp, &neigh_node->ifinfo_list, list) { @@ -263,9 +261,6 @@ static void batadv_neigh_node_release(struct kref *ref) batadv_hardif_neigh_put(neigh_node->hardif_neigh); - if (bao->bat_neigh_free) - bao->bat_neigh_free(neigh_node); - batadv_hardif_put(neigh_node->if_incoming); kfree_rcu(neigh_node, rcu); diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index 6a577f4..114d150 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -1278,8 +1278,6 @@ struct batadv_forw_packet { * better than neigh2 for their respective outgoing interface from the metric * prospective * @bat_neigh_print: print the single hop neighbor list (optional) - * @bat_neigh_free: free the resources allocated by the routing algorithm for a - * neigh_node object * @bat_orig_print: print the originator table (optional) * @bat_orig_free: free the resources allocated by the routing algorithm for an * orig_node object @@ -1310,7 +1308,6 @@ struct batadv_algo_ops { struct batadv_neigh_node *neigh2, struct batadv_hard_iface *if_outgoing2); void (*bat_neigh_print)(struct batadv_priv *priv, struct seq_file *seq); - void (*bat_neigh_free)(struct batadv_neigh_node *neigh); /* orig_node handling API */ void (*bat_orig_print)(struct batadv_priv *priv, struct seq_file *seq, struct batadv_hard_iface *hard_iface); -- 2.8.0.rc3

1 1

[B.A.T.M.A.N.] [PATCH] batman-adv: refactor batadv_neigh_node_* functions to follow common style
by Marek Lindner 04 May '16

04 May '16

Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> --- net/batman-adv/bat_iv_ogm.c | 3 ++- net/batman-adv/bat_v_elp.c | 3 ++- net/batman-adv/bat_v_ogm.c | 4 ++-- net/batman-adv/originator.c | 35 +++++++++++++++++++++++++++++------ net/batman-adv/originator.h | 6 +++--- 5 files changed, 38 insertions(+), 13 deletions(-) diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index ce2f203..aa11296 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -336,7 +336,8 @@ batadv_iv_ogm_neigh_new(struct batadv_hard_iface *hard_iface, { struct batadv_neigh_node *neigh_node; - neigh_node = batadv_neigh_node_new(orig_node, hard_iface, neigh_addr); + neigh_node = batadv_neigh_node_get_or_create(orig_node, + hard_iface, neigh_addr); if (!neigh_node) goto out; diff --git a/net/batman-adv/bat_v_elp.c b/net/batman-adv/bat_v_elp.c index 3844e7e..e080340 100644 --- a/net/batman-adv/bat_v_elp.c +++ b/net/batman-adv/bat_v_elp.c @@ -430,7 +430,8 @@ static void batadv_v_elp_neigh_update(struct batadv_priv *bat_priv, if (!orig_neigh) return; - neigh = batadv_neigh_node_new(orig_neigh, if_incoming, neigh_addr); + neigh = batadv_neigh_node_get_or_create(orig_neigh, + if_incoming, neigh_addr); if (!neigh) goto orig_free; diff --git a/net/batman-adv/bat_v_ogm.c b/net/batman-adv/bat_v_ogm.c index 473ebb9..23ea9bf 100644 --- a/net/batman-adv/bat_v_ogm.c +++ b/net/batman-adv/bat_v_ogm.c @@ -683,8 +683,8 @@ static void batadv_v_ogm_process(const struct sk_buff *skb, int ogm_offset, if (!orig_node) return; - neigh_node = batadv_neigh_node_new(orig_node, if_incoming, - ethhdr->h_source); + neigh_node = batadv_neigh_node_get_or_create(orig_node, if_incoming, + ethhdr->h_source); if (!neigh_node) goto out; diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c index 7f51bc2..b0bad57 100644 --- a/net/batman-adv/originator.c +++ b/net/batman-adv/originator.c @@ -602,19 +602,19 @@ batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface, } /** - * batadv_neigh_node_new - create and init a new neigh_node object + * batadv_neigh_node_create - create a neigh node object * @orig_node: originator object representing the neighbour * @hard_iface: the interface where the neighbour is connected to * @neigh_addr: the mac address of the neighbour interface * * Allocates a new neigh_node object and initialises all the generic fields. * - * Return: neighbor when found. Othwerwise NULL + * Return: the neighbour node if found or created or NULL otherwise. */ -struct batadv_neigh_node * -batadv_neigh_node_new(struct batadv_orig_node *orig_node, - struct batadv_hard_iface *hard_iface, - const u8 *neigh_addr) +static struct batadv_neigh_node * +batadv_neigh_node_create(struct batadv_orig_node *orig_node, + struct batadv_hard_iface *hard_iface, + const u8 *neigh_addr) { struct batadv_neigh_node *neigh_node; struct batadv_hardif_neigh_node *hardif_neigh = NULL; @@ -667,6 +667,29 @@ out: } /** + * batadv_neigh_node_get_or_create - retrieve or create a neigh node object + * @orig_node: originator object representing the neighbour + * @hard_iface: the interface where the neighbour is connected to + * @neigh_addr: the mac address of the neighbour interface + * + * Return: the neighbour node if found or created or NULL otherwise. + */ +struct batadv_neigh_node * +batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node, + struct batadv_hard_iface *hard_iface, + const u8 *neigh_addr) +{ + struct batadv_neigh_node *neigh_node = NULL; + + /* first check without locking to avoid the overhead */ + neigh_node = batadv_neigh_node_get(orig_node, hard_iface, neigh_addr); + if (neigh_node) + return neigh_node; + + return batadv_neigh_node_create(orig_node, hard_iface, neigh_addr); +} + +/** * batadv_hardif_neigh_seq_print_text - print the single hop neighbour list * @seq: neighbour table seq_file struct * @offset: not used diff --git a/net/batman-adv/originator.h b/net/batman-adv/originator.h index 64a8951..566306b 100644 --- a/net/batman-adv/originator.h +++ b/net/batman-adv/originator.h @@ -46,9 +46,9 @@ batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface, void batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh); struct batadv_neigh_node * -batadv_neigh_node_new(struct batadv_orig_node *orig_node, - struct batadv_hard_iface *hard_iface, - const u8 *neigh_addr); +batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node, + struct batadv_hard_iface *hard_iface, + const u8 *neigh_addr); void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node); struct batadv_neigh_node * batadv_orig_router_get(struct batadv_orig_node *orig_node, -- 2.8.0.rc3

1 1

[B.A.T.M.A.N.] [PATCHv3] batctl: Use netlink to replace some of debugfs
by Andrew Lunn 04 May '16

04 May '16

The kernel has gained support for exporting some information via netlink. Use this when available, rather than debugfs. If netlink is not available, or the information is not yet available via netlink, batctl will fall back to debugfs. Signed-off-by: Andrew Lunn <andrew(a)lunn.ch> --- v2: Verify mandatory attributes are returned by the kernel, and that they have the expected size. v3: Use libnl to perform more verification Add originator header checkpatch cleanup --- Makefile | 13 +- batman_adv.h | 111 +++++++ debug.c | 19 +- debug.h | 4 +- functions.c | 11 + functions.h | 2 + main.h | 1 + netlink.c | 1024 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 8 files changed, 1181 insertions(+), 4 deletions(-) create mode 100644 batman_adv.h create mode 100644 netlink.c diff --git a/Makefile b/Makefile index b82c0c6..60795f7 100755 --- a/Makefile +++ b/Makefile @@ -24,7 +24,7 @@ export CONFIG_BATCTL_BISECT=n # batctl build BINARY_NAME = batctl -OBJ = main.o bat-hosts.o functions.o sys.o debug.o ping.o traceroute.o tcpdump.o hash.o debugfs.o ioctl.o list-batman.o translate.o +OBJ = main.o bat-hosts.o functions.o sys.o debug.o ping.o traceroute.o tcpdump.o hash.o debugfs.o ioctl.o list-batman.o translate.o netlink.o OBJ_BISECT = bisect_iv.o MANPAGE = man/batctl.8 @@ -61,6 +61,17 @@ endif CFLAGS += $(LIBNL_CFLAGS) LDLIBS += $(LIBNL_LDLIBS) +ifeq ($(origin LIBNL_GENL_CFLAGS) $(origin LIBNL_GENL_LDLIBS), undefined undefined) + LIBNL_GENL_NAME ?= libnl-genl-3.0 + ifeq ($(shell $(PKG_CONFIG) --modversion $(LIBNL_GENL_NAME) 2>/dev/null),) + $(error No $(LIBNL_GENL_NAME) development libraries found!) + endif + LIBNL_GENL_CFLAGS += $(shell $(PKG_CONFIG) --cflags $(LIBNL_GENL_NAME)) + LIBNL_GENL_LDLIBS += $(shell $(PKG_CONFIG) --libs $(LIBNL_GENL_NAME)) +endif +CFLAGS += $(LIBNL_GENL_CFLAGS) +LDLIBS += $(LIBNL_GENL_LDLIBS) + # standard build tools ifeq ($(CONFIG_BATCTL_BISECT),y) OBJ += $(OBJ_BISECT) diff --git a/batman_adv.h b/batman_adv.h new file mode 100644 index 0000000..6a97a2c --- /dev/null +++ b/batman_adv.h @@ -0,0 +1,111 @@ +/* Copyright (C) 2016 B.A.T.M.A.N. contributors: + * + * Matthias Schiffer + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2 of the GNU General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef _UAPI_LINUX_BATMAN_ADV_H_ +#define _UAPI_LINUX_BATMAN_ADV_H_ + +#define BATADV_NL_NAME "batadv" + +/** + * enum batadv_tt_client_flags - TT client specific flags + * @BATADV_TT_CLIENT_DEL: the client has to be deleted from the table + * @BATADV_TT_CLIENT_ROAM: the client roamed to/from another node and the new + * update telling its new real location has not been received/sent yet + * @BATADV_TT_CLIENT_WIFI: this client is connected through a wifi interface. + * This information is used by the "AP Isolation" feature + * @BATADV_TT_CLIENT_ISOLA: this client is considered "isolated". This + * information is used by the Extended Isolation feature + * @BATADV_TT_CLIENT_NOPURGE: this client should never be removed from the table + * @BATADV_TT_CLIENT_NEW: this client has been added to the local table but has + * not been announced yet + * @BATADV_TT_CLIENT_PENDING: this client is marked for removal but it is kept + * in the table for one more originator interval for consistency purposes + * @BATADV_TT_CLIENT_TEMP: this global client has been detected to be part of + * the network but no nnode has already announced it + * + * Bits from 0 to 7 are called _remote flags_ because they are sent on the wire. + * Bits from 8 to 15 are called _local flags_ because they are used for local + * computations only. + * + * Bits from 4 to 7 - a subset of remote flags - are ensured to be in sync with + * the other nodes in the network. To achieve this goal these flags are included + * in the TT CRC computation. + */ +enum batadv_tt_client_flags { + BATADV_TT_CLIENT_DEL = (1 << 0), + BATADV_TT_CLIENT_ROAM = (1 << 1), + BATADV_TT_CLIENT_WIFI = (1 << 4), + BATADV_TT_CLIENT_ISOLA = (1 << 5), + BATADV_TT_CLIENT_NOPURGE = (1 << 8), + BATADV_TT_CLIENT_NEW = (1 << 9), + BATADV_TT_CLIENT_PENDING = (1 << 10), + BATADV_TT_CLIENT_TEMP = (1 << 11), +}; + +enum { + BATADV_ATTR_UNSPEC, + BATADV_ATTR_VERSION, + BATADV_ATTR_ALGO_NAME, + BATADV_ATTR_MESH_IFINDEX, + BATADV_ATTR_MESH_IFNAME, + BATADV_ATTR_MESH_ADDRESS, + BATADV_ATTR_HARD_IFINDEX, + BATADV_ATTR_HARD_IFNAME, + BATADV_ATTR_HARD_ADDRESS, + BATADV_ATTR_ACTIVE, + BATADV_ATTR_ORIG_ADDRESS, + BATADV_ATTR_TT_ADDRESS, + BATADV_ATTR_TT_TTVN, + BATADV_ATTR_TT_LAST_TTVN, + BATADV_ATTR_TT_CRC32, + BATADV_ATTR_TT_VID, + BATADV_ATTR_TT_FLAGS, + BATADV_ATTR_FLAG_BEST, + BATADV_ATTR_LAST_SEEN_MSECS, + BATADV_ATTR_NEIGH_ADDRESS, + BATADV_ATTR_TQ, + BATADV_ATTR_THROUGHPUT, + BATADV_ATTR_BANDWIDTH_UP, + BATADV_ATTR_BANDWIDTH_DOWN, + BATADV_ATTR_ROUTER, + BATADV_ATTR_BLA_OWN, + BATADV_ATTR_BLA_ADDRESS, + BATADV_ATTR_BLA_VID, + BATADV_ATTR_BLA_BACKBONE, + BATADV_ATTR_BLA_CRC, + __BATADV_ATTR_MAX, +}; + +#define BATADV_ATTR_MAX (__BATADV_ATTR_MAX - 1) + +enum { + BATADV_CMD_UNSPEC, + BATADV_CMD_GET_ROUTING_ALGOS, + BATADV_CMD_GET_MESH_INFO, + BATADV_CMD_GET_HARDIFS, + BATADV_CMD_GET_TRANSTABLE_LOCAL, + BATADV_CMD_GET_TRANSTABLE_GLOBAL, + BATADV_CMD_GET_ORIGINATORS, + BATADV_CMD_GET_NEIGHBORS, + BATADV_CMD_GET_GATEWAYS, + BATADV_CMD_GET_BLA_CLAIM, + __BATADV_CMD_MAX, +}; + +#define BATADV_CMD_MAX (__BATADV_CMD_MAX - 1) + +#endif /* _UAPI_LINUX_BATMAN_ADV_H_ */ diff --git a/debug.c b/debug.c index 3db3ed9..c61970e 100644 --- a/debug.c +++ b/debug.c @@ -23,10 +23,12 @@ #include <unistd.h> #include <stdio.h> #include <stdlib.h> +#include <errno.h> #include "debug.h" #include "debugfs.h" #include "functions.h" +#include "netlink.h" #include "sys.h" const struct debug_table_data batctl_debug_tables[BATCTL_TABLE_NUM] = { @@ -35,36 +37,42 @@ const struct debug_table_data batctl_debug_tables[BATCTL_TABLE_NUM] = { .opt_short = "n", .debugfs_name = "neighbors", .header_lines = 2, + .netlink_fn = netlink_print_neighbors, }, { .opt_long = "originators", .opt_short = "o", .debugfs_name = "originators", .header_lines = 2, + .netlink_fn = netlink_print_originators, }, { .opt_long = "gateways", .opt_short = "gwl", .debugfs_name = "gateways", .header_lines = 1, + .netlink_fn = netlink_print_gateways, }, { .opt_long = "translocal", .opt_short = "tl", .debugfs_name = "transtable_local", .header_lines = 2, + .netlink_fn = netlink_print_translocal, }, { .opt_long = "transglobal", .opt_short = "tg", .debugfs_name = "transtable_global", .header_lines = 2, + .netlink_fn = netlink_print_transglobal, }, { .opt_long = "claimtable", .opt_short = "cl", .debugfs_name = "bla_claim_table", .header_lines = 2, + .netlink_fn = netlink_print_bla_claim, }, { .opt_long = "backbonetable", @@ -115,7 +123,7 @@ int handle_debug_table(char *mesh_iface, int debug_table, int argc, char **argv) char *orig_iface = NULL; float orig_timeout = 0.0f; float watch_interval = 1; - opterr = 0; + int err; while ((optchar = getopt(argc, argv, "hnw:t:Humi:")) != -1) { switch (optchar) { @@ -220,12 +228,19 @@ int handle_debug_table(char *mesh_iface, int debug_table, int argc, char **argv) debugfs_make_path(DEBUG_BATIF_PATH_FMT "/", orig_iface, full_path, sizeof(full_path)); else debugfs_make_path(DEBUG_BATIF_PATH_FMT "/", mesh_iface, full_path, sizeof(full_path)); + + if (batctl_debug_tables[debug_table].netlink_fn) { + err = batctl_debug_tables[debug_table].netlink_fn( + mesh_iface, read_opt, orig_timeout, watch_interval); + if (err != -EOPNOTSUPP) + return err; + } return read_file(full_path, (char *)batctl_debug_tables[debug_table].debugfs_name, read_opt, orig_timeout, watch_interval, batctl_debug_tables[debug_table].header_lines); } -int print_routing_algos(void) { +int debug_print_routing_algos(void) { char full_path[MAX_PATH+1]; char *debugfs_mnt; diff --git a/debug.h b/debug.h index df65f50..b09def7 100644 --- a/debug.h +++ b/debug.h @@ -48,13 +48,15 @@ struct debug_table_data { const char opt_short[OPT_SHORT_MAX_LEN]; const char debugfs_name[DEBUG_TABLE_PATH_MAX_LEN]; size_t header_lines; + int (*netlink_fn)(char *mesh_iface, int read_opt, + float orig_timeout, float watch_interval); }; extern const struct debug_table_data batctl_debug_tables[BATCTL_TABLE_NUM]; int handle_debug_table(char *mesh_iface, int debug_table, int argc, char **argv); int log_print(char *mesh_iface, int argc, char **argv); -int print_routing_algos(void); +int debug_print_routing_algos(void); int print_vis_info(char *mesh_iface); #endif diff --git a/functions.c b/functions.c index be8f8b0..27c14d6 100644 --- a/functions.c +++ b/functions.c @@ -52,6 +52,7 @@ #include "sys.h" #include "debug.h" #include "debugfs.h" +#include "netlink.h" static struct timeval start_time; static char *host_name; @@ -849,3 +850,13 @@ err: return arg.vid; } + +int print_routing_algos(void) +{ + int err; + + err = netlink_print_routing_algos(); + if (err == -EOPNOTSUPP) + err = debug_print_routing_algos(); + return err; +} diff --git a/functions.h b/functions.h index d0b05b9..2d29d52 100644 --- a/functions.h +++ b/functions.h @@ -44,6 +44,7 @@ struct ether_addr *translate_mac(char *mesh_iface, struct ether_addr *mac); struct ether_addr *resolve_mac(const char *asc); int vlan_get_link(const char *ifname, char **parent); +int print_routing_algos(void); extern char *line_ptr; enum { @@ -59,6 +60,7 @@ enum { SKIP_HEADER = 0x100, UNICAST_ONLY = 0x200, MULTICAST_ONLY = 0x400, + PARSE_ONLY = 0x800, }; #endif diff --git a/main.h b/main.h index 81f223c..a05d1f0 100644 --- a/main.h +++ b/main.h @@ -47,6 +47,7 @@ #endif #define __packed __attribute((packed)) /* linux kernel compat */ +#define __unused __attribute__((unused)) #define BIT(nr) (1UL << (nr)) /* linux kernel compat */ typedef uint8_t u8; /* linux kernel compat */ diff --git a/netlink.c b/netlink.c new file mode 100644 index 0000000..951b842 --- /dev/null +++ b/netlink.c @@ -0,0 +1,1024 @@ +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <errno.h> +#include <net/if.h> +#include <netlink/netlink.h> +#include <netlink/genl/genl.h> +#include <netlink/genl/ctrl.h> +#include <netinet/in.h> +#include <arpa/inet.h> + +#include "bat-hosts.h" +#include "batman_adv.h" +#include "netlink.h" +#include "functions.h" +#include "main.h" + +#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x))) + +struct print_opts { + int read_opt; + float orig_timeout; + float watch_interval; +}; + +static struct nla_policy policy[BATADV_ATTR_MAX+1] = { + [BATADV_ATTR_VERSION] = { .type = NLA_STRING }, + [BATADV_ATTR_ALGO_NAME] = { .type = NLA_STRING }, + [BATADV_ATTR_MESH_IFINDEX] = { .type = NLA_U32 }, + [BATADV_ATTR_MESH_IFNAME] = { .type = NLA_STRING }, + [BATADV_ATTR_MESH_ADDRESS] = { .type = NLA_UNSPEC, + .minlen = ETH_ALEN, + .maxlen = ETH_ALEN}, + [BATADV_ATTR_HARD_IFINDEX] = { .type = NLA_U32 }, + [BATADV_ATTR_HARD_IFNAME] = { .type = NLA_STRING }, + [BATADV_ATTR_HARD_ADDRESS] = { .type = NLA_UNSPEC, + .minlen = ETH_ALEN, + .maxlen = ETH_ALEN }, + [BATADV_ATTR_ACTIVE] = { .type = NLA_FLAG }, + [BATADV_ATTR_ORIG_ADDRESS] = { .type = NLA_UNSPEC, + .minlen = ETH_ALEN, + .maxlen = ETH_ALEN }, + [BATADV_ATTR_TT_ADDRESS] = { .type = NLA_UNSPEC, + .minlen = ETH_ALEN, + .maxlen = ETH_ALEN }, + [BATADV_ATTR_TT_TTVN] = { .type = NLA_U8 }, + [BATADV_ATTR_TT_LAST_TTVN] = { .type = NLA_U8 }, + [BATADV_ATTR_TT_CRC32] = { .type = NLA_U32 }, + [BATADV_ATTR_TT_VID] = { .type = NLA_U16 }, + [BATADV_ATTR_TT_FLAGS] = { .type = NLA_U32 }, + [BATADV_ATTR_FLAG_BEST] = { .type = NLA_FLAG }, + [BATADV_ATTR_LAST_SEEN_MSECS] = { .type = NLA_U32 }, + [BATADV_ATTR_NEIGH_ADDRESS] = { .type = NLA_UNSPEC, + .minlen = ETH_ALEN, + .maxlen = ETH_ALEN }, + [BATADV_ATTR_TQ] = { .type = NLA_U8 }, + [BATADV_ATTR_THROUGHPUT] = { .type = NLA_FLAG }, + [BATADV_ATTR_BANDWIDTH_UP] = { .type = NLA_U32 }, + [BATADV_ATTR_BANDWIDTH_DOWN] = { .type = NLA_U32 }, + [BATADV_ATTR_ROUTER] = { .type = NLA_UNSPEC, + .minlen = ETH_ALEN, + .maxlen = ETH_ALEN }, + [BATADV_ATTR_BLA_OWN] = { .type = NLA_FLAG }, + [BATADV_ATTR_BLA_ADDRESS] = { .type = NLA_UNSPEC, + .minlen = ETH_ALEN, + .maxlen = ETH_ALEN }, + [BATADV_ATTR_BLA_VID] = { .type = NLA_U16 }, + [BATADV_ATTR_BLA_BACKBONE] = { .type = NLA_UNSPEC, + .minlen = ETH_ALEN, + .maxlen = ETH_ALEN }, + [BATADV_ATTR_BLA_CRC] = { .type = NLA_U16 }, +}; + +static int last_err; +static char *algo_name; + +static int missing_mandatory_attrs(struct nlattr *attrs[], + const int mandatory[], int num) +{ + int i; + + for (i = 0; i < num; i++) + if (!attrs[mandatory[i]]) + return -EINVAL; + + return 0; +} + +static int print_error(struct sockaddr_nl *nla __unused, + struct nlmsgerr *nlerr, + void *arg __unused) +{ + if (nlerr->error != -EOPNOTSUPP) + fprintf(stderr, "Error received: %s\n", + strerror(-nlerr->error)); + + last_err = -nlerr->error; + + return NL_STOP; +} + +static int stop_callback(struct nl_msg *msg, void *arg __unused) +{ + struct nlmsghdr *nlh = nlmsg_hdr(msg); + int *error = nlmsg_data(nlh); + + if (*error) + fprintf(stderr, "Error received: %s\n", strerror(-*error)); + + return NL_STOP; +} + +static const int info_mandatory[] = { + BATADV_ATTR_MESH_IFINDEX, + BATADV_ATTR_MESH_IFNAME, +}; + +static const int info_hard_mandatory[] = { + BATADV_ATTR_VERSION, + BATADV_ATTR_ALGO_NAME, + BATADV_ATTR_HARD_IFNAME, + BATADV_ATTR_HARD_ADDRESS, +}; + +static int info_callback(struct nl_msg *msg, void *arg) +{ + struct nlattr *attrs[BATADV_ATTR_MAX+1]; + struct nlmsghdr *nlh = nlmsg_hdr(msg); + struct print_opts *opts = arg; + const uint8_t *primary_mac; + struct genlmsghdr *ghdr; + const uint8_t *mesh_mac; + const char *primary_if; + const char *mesh_name; + const char *version; + + if (!genlmsg_valid_hdr(nlh, 0)) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + ghdr = nlmsg_data(nlh); + + if (ghdr->cmd != BATADV_CMD_GET_MESH_INFO) + return NL_OK; + + if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0), + genlmsg_len(ghdr), policy)) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + if (missing_mandatory_attrs(attrs, info_mandatory, + ARRAY_SIZE(info_mandatory))) { + fputs("Missing attributes from kernel\n", stderr); + exit(1); + } + + mesh_name = nla_get_string(attrs[BATADV_ATTR_MESH_IFNAME]); + mesh_mac = nla_data(attrs[BATADV_ATTR_MESH_ADDRESS]); + + if (attrs[BATADV_ATTR_HARD_IFNAME]) { + if (missing_mandatory_attrs(attrs, info_hard_mandatory, + ARRAY_SIZE(info_hard_mandatory))) { + fputs("Missing attributes from kernel\n", + stderr); + exit(1); + } + + version = nla_get_string(attrs[BATADV_ATTR_VERSION]); + algo_name = nla_get_string(attrs[BATADV_ATTR_ALGO_NAME]); + primary_if = nla_get_string(attrs[BATADV_ATTR_HARD_IFNAME]); + primary_mac = nla_data(attrs[BATADV_ATTR_HARD_ADDRESS]); + + if (!(opts->read_opt & PARSE_ONLY)) + printf("[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%02x:%02x:%02x:%02x:%02x:%02x (%s/%02x:%02x:%02x:%02x:%02x:%02x %s)]\n", + version, primary_if, + primary_mac[0], primary_mac[1], primary_mac[2], + primary_mac[3], primary_mac[4], primary_mac[5], + mesh_name, + mesh_mac[0], mesh_mac[1], mesh_mac[2], + mesh_mac[3], mesh_mac[4], mesh_mac[5], + algo_name); + } else { + if (!(opts->read_opt & PARSE_ONLY)) + printf("BATMAN mesh %s disabled\n", mesh_name); + } + + return NL_STOP; +} + +static void netlink_print_info(int ifindex, int read_opt) +{ + struct nl_sock *sock; + struct nl_msg *msg; + struct nl_cb *cb; + int family; + struct print_opts opts = { + .read_opt = read_opt, + }; + + sock = nl_socket_alloc(); + genl_connect(sock); + + family = genl_ctrl_resolve(sock, BATADV_NL_NAME); + if (family < 0) + return; + + msg = nlmsg_alloc(); + genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, family, 0, 0, + BATADV_CMD_GET_MESH_INFO, 1); + + nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, ifindex); + + nl_send_auto_complete(sock, msg); + + nlmsg_free(msg); + + cb = nl_cb_alloc(NL_CB_DEFAULT); + nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, info_callback, &opts); + nl_cb_err(cb, NL_CB_CUSTOM, print_error, NULL); + + nl_recvmsgs(sock, cb); + + nl_socket_free(sock); +} + +static const int routing_algos_mandatory[] = { + BATADV_ATTR_ALGO_NAME, +}; + +static int routing_algos_callback(struct nl_msg *msg, void *arg __unused) +{ + struct nlattr *attrs[BATADV_ATTR_MAX+1]; + struct nlmsghdr *nlh = nlmsg_hdr(msg); + struct genlmsghdr *ghdr; + const char *algo_name; + + if (!genlmsg_valid_hdr(nlh, 0)) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + ghdr = nlmsg_data(nlh); + + if (ghdr->cmd != BATADV_CMD_GET_ROUTING_ALGOS) + return NL_OK; + + if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0), + genlmsg_len(ghdr), policy)) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + if (missing_mandatory_attrs(attrs, routing_algos_mandatory, + ARRAY_SIZE(routing_algos_mandatory))) { + fputs("Missing attributes from kernel\n", stderr); + exit(1); + } + + algo_name = nla_get_string(attrs[BATADV_ATTR_ALGO_NAME]); + + printf(" * %s\n", algo_name); + + return NL_OK; +} + +int netlink_print_routing_algos(void) +{ + struct nl_sock *sock; + struct nl_msg *msg; + struct nl_cb *cb; + int family; + + sock = nl_socket_alloc(); + genl_connect(sock); + + family = genl_ctrl_resolve(sock, BATADV_NL_NAME); + if (family < 0) + return -EOPNOTSUPP; + + msg = nlmsg_alloc(); + genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, family, 0, NLM_F_DUMP, + BATADV_CMD_GET_ROUTING_ALGOS, 1); + + nl_send_auto_complete(sock, msg); + + nlmsg_free(msg); + + cb = nl_cb_alloc(NL_CB_DEFAULT); + nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, routing_algos_callback, + NULL); + nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, stop_callback, NULL); + nl_cb_err(cb, NL_CB_CUSTOM, print_error, NULL); + + printf("Available routing algorithms:\n"); + + nl_recvmsgs(sock, cb); + + nl_socket_free(sock); + + return 0; +} + +static const int originators_mandatory[] = { + BATADV_ATTR_ORIG_ADDRESS, + BATADV_ATTR_NEIGH_ADDRESS, + BATADV_ATTR_HARD_IFINDEX, + BATADV_ATTR_LAST_SEEN_MSECS, +}; + +static int originators_callback(struct nl_msg *msg, void *arg) +{ + unsigned throughput_mbits, throughput_kbits; + struct nlattr *attrs[BATADV_ATTR_MAX+1]; + struct nlmsghdr *nlh = nlmsg_hdr(msg); + int last_seen_msecs, last_seen_secs; + struct print_opts *opts = arg; + struct bat_host *bat_host; + struct genlmsghdr *ghdr; + char ifname[IF_NAMESIZE]; + float last_seen; + uint8_t *neigh; + uint8_t *orig; + char c = ' '; + uint8_t tq; + + if (!genlmsg_valid_hdr(nlh, 0)) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + ghdr = nlmsg_data(nlh); + + if (ghdr->cmd != BATADV_CMD_GET_ORIGINATORS) + return NL_OK; + + if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0), + genlmsg_len(ghdr), policy)) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + if (missing_mandatory_attrs(attrs, originators_mandatory, + ARRAY_SIZE(originators_mandatory))) { + fputs("Missing attributes from kernel\n", stderr); + exit(1); + } + + orig = nla_data(attrs[BATADV_ATTR_ORIG_ADDRESS]); + neigh = nla_data(attrs[BATADV_ATTR_NEIGH_ADDRESS]); + + if (!if_indextoname(nla_get_u32(attrs[BATADV_ATTR_HARD_IFINDEX]), + ifname)) + ifname[0] = '\0'; + + if (attrs[BATADV_ATTR_FLAG_BEST]) + c = '*'; + + last_seen_msecs = nla_get_u32(attrs[BATADV_ATTR_LAST_SEEN_MSECS]); + last_seen = (float)last_seen_msecs / 1000.0; + last_seen_secs = last_seen_msecs / 1000; + last_seen_msecs = last_seen_msecs % 1000; + + /* skip timed out originators */ + if (opts->read_opt & NO_OLD_ORIGS) + if (last_seen > opts->orig_timeout) + return NL_OK; + + if (attrs[BATADV_ATTR_THROUGHPUT]) { + throughput_kbits = nla_get_u32(attrs[BATADV_ATTR_THROUGHPUT]); + throughput_mbits = throughput_kbits / 1000; + throughput_kbits = throughput_kbits % 1000; + + if (!(opts->read_opt & USE_BAT_HOSTS)) { + printf(" %c %02x:%02x:%02x:%02x:%02x:%02x %4i.%03is (%9u.%1u) %02x:%02x:%02x:%02x:%02x:%02x [%10s]\n", + c, + orig[0], orig[1], orig[2], + orig[3], orig[4], orig[5], + last_seen_secs, last_seen_msecs, + throughput_mbits, throughput_kbits / 100, + neigh[0], neigh[1], neigh[2], + neigh[3], neigh[4], neigh[5], + ifname); + } else { + bat_host = bat_hosts_find_by_mac((char *)orig); + if (bat_host) + printf(" %c %17s ", c, bat_host->name); + else + printf(" %c %02x:%02x:%02x:%02x:%02x:%02x ", + c, + orig[0], orig[1], orig[2], + orig[3], orig[4], orig[5]); + printf("%4i.%03is (%9u.%1u) ", + last_seen_secs, last_seen_msecs, + throughput_mbits, throughput_kbits / 100); + bat_host = bat_hosts_find_by_mac((char *)neigh); + if (bat_host) + printf(" %c %17s ", c, bat_host->name); + else + printf(" %02x:%02x:%02x:%02x:%02x:%02x ", + neigh[0], neigh[1], neigh[2], + neigh[3], neigh[4], neigh[5]); + printf("[%10s]\n", ifname); + } + } + if (attrs[BATADV_ATTR_TQ]) { + tq = nla_get_u8(attrs[BATADV_ATTR_TQ]); + + if (!(opts->read_opt & USE_BAT_HOSTS)) { + printf(" %c %02x:%02x:%02x:%02x:%02x:%02x %4i.%03is (%3i) %02x:%02x:%02x:%02x:%02x:%02x [%10s]\n", + c, + orig[0], orig[1], orig[2], + orig[3], orig[4], orig[5], + last_seen_secs, last_seen_msecs, tq, + neigh[0], neigh[1], neigh[2], + neigh[3], neigh[4], neigh[5], + ifname); + } else { + bat_host = bat_hosts_find_by_mac((char *)orig); + if (bat_host) + printf(" %c %17s ", c, bat_host->name); + else + printf(" %c %02x:%02x:%02x:%02x:%02x:%02x ", + c, + orig[0], orig[1], orig[2], + orig[3], orig[4], orig[5]); + printf("%4i.%03is (%3i) ", + last_seen_secs, last_seen_msecs, tq); + bat_host = bat_hosts_find_by_mac((char *)neigh); + if (bat_host) + printf("%17s ", bat_host->name); + else + printf("%02x:%02x:%02x:%02x:%02x:%02x ", + neigh[0], neigh[1], neigh[2], + neigh[3], neigh[4], neigh[5]); + printf("[%10s]\n", ifname); + } + } + + return NL_OK; +} + +static const int neighbors_mandatory[] = { + BATADV_ATTR_NEIGH_ADDRESS, + BATADV_ATTR_HARD_IFINDEX, + BATADV_ATTR_LAST_SEEN_MSECS, +}; + +static int neighbors_callback(struct nl_msg *msg, void *arg) +{ + unsigned throughput_mbits, throughput_kbits; + struct nlattr *attrs[BATADV_ATTR_MAX+1]; + struct nlmsghdr *nlh = nlmsg_hdr(msg); + int last_seen_msecs, last_seen_secs; + struct print_opts *opts = arg; + struct bat_host *bat_host; + char ifname[IF_NAMESIZE]; + struct genlmsghdr *ghdr; + uint8_t *neigh; + + if (!genlmsg_valid_hdr(nlh, 0)) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + ghdr = nlmsg_data(nlh); + + if (ghdr->cmd != BATADV_CMD_GET_NEIGHBORS) + return NL_OK; + + if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0), + genlmsg_len(ghdr), policy)) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + if (missing_mandatory_attrs(attrs, neighbors_mandatory, + ARRAY_SIZE(neighbors_mandatory))) { + fputs("Missing attributes from kernel\n", stderr); + exit(1); + } + + neigh = nla_data(attrs[BATADV_ATTR_NEIGH_ADDRESS]); + bat_host = bat_hosts_find_by_mac((char *)neigh); + + if (!if_indextoname(nla_get_u32(attrs[BATADV_ATTR_HARD_IFINDEX]), + ifname)) + ifname[0] = '\0'; + + last_seen_msecs = nla_get_u32(attrs[BATADV_ATTR_LAST_SEEN_MSECS]); + last_seen_secs = last_seen_msecs / 1000; + last_seen_msecs = last_seen_msecs % 1000; + + if (attrs[BATADV_ATTR_THROUGHPUT]) { + throughput_kbits = nla_get_u32(attrs[BATADV_ATTR_THROUGHPUT]); + throughput_mbits = throughput_kbits / 1000; + throughput_kbits = throughput_kbits % 1000; + + if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host) + printf("%02x:%02x:%02x:%02x:%02x:%02x ", + neigh[0], neigh[1], neigh[2], + neigh[3], neigh[4], neigh[5]); + else + printf("%17s ", bat_host->name); + + printf("%4i.%03is (%9u.%1u) [%10s]\n", + last_seen_secs, last_seen_msecs, + throughput_mbits, throughput_kbits / 100, + ifname); + } else { + printf(" %10s ", ifname); + + if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host) + printf("%02x:%02x:%02x:%02x:%02x:%02x ", + neigh[0], neigh[1], neigh[2], + neigh[3], neigh[4], neigh[5]); + else + printf("%17s ", bat_host->name); + + printf("%4i.%03is\n", last_seen_secs, last_seen_msecs); + } + + return NL_OK; +} + +static const int transglobal_mandatory[] = { + BATADV_ATTR_TT_ADDRESS, + BATADV_ATTR_ORIG_ADDRESS, + BATADV_ATTR_TT_VID, + BATADV_ATTR_TT_TTVN, + BATADV_ATTR_TT_LAST_TTVN, + BATADV_ATTR_TT_CRC32, + BATADV_ATTR_TT_FLAGS, +}; + +static int transglobal_callback(struct nl_msg *msg, void *arg) +{ + struct nlattr *attrs[BATADV_ATTR_MAX+1]; + struct nlmsghdr *nlh = nlmsg_hdr(msg); + struct print_opts *opts = arg; + struct bat_host *bat_host; + struct genlmsghdr *ghdr; + char c, r, w, i, t; + uint8_t last_ttvn; + uint32_t crc32; + uint32_t flags; + uint8_t *addr; + uint8_t *orig; + uint8_t ttvn; + int16_t vid; + + if (!genlmsg_valid_hdr(nlh, 0)) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + ghdr = nlmsg_data(nlh); + + if (ghdr->cmd != BATADV_CMD_GET_TRANSTABLE_GLOBAL) + return NL_OK; + + if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0), + genlmsg_len(ghdr), policy)) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + if (missing_mandatory_attrs(attrs, transglobal_mandatory, + ARRAY_SIZE(transglobal_mandatory))) { + fputs("Missing attributes from kernel\n", stderr); + exit(1); + } + + addr = nla_data(attrs[BATADV_ATTR_TT_ADDRESS]); + orig = nla_data(attrs[BATADV_ATTR_ORIG_ADDRESS]); + vid = nla_get_u16(attrs[BATADV_ATTR_TT_VID]); + ttvn = nla_get_u8(attrs[BATADV_ATTR_TT_TTVN]); + last_ttvn = nla_get_u8(attrs[BATADV_ATTR_TT_LAST_TTVN]); + crc32 = nla_get_u32(attrs[BATADV_ATTR_TT_CRC32]); + flags = nla_get_u32(attrs[BATADV_ATTR_TT_FLAGS]); + + c = ' ', r = '.', w = '.', i = '.', t = '.'; + if (attrs[BATADV_ATTR_FLAG_BEST]) + c = '*'; + if (flags & BATADV_TT_CLIENT_ROAM) + r = 'R'; + if (flags & BATADV_TT_CLIENT_WIFI) + w = 'W'; + if (flags & BATADV_TT_CLIENT_ISOLA) + i = 'I'; + if (flags & BATADV_TT_CLIENT_TEMP) + t = 'T'; + + printf(" %c ", c); + + bat_host = bat_hosts_find_by_mac((char *)addr); + if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host) + printf("%02x:%02x:%02x:%02x:%02x:%02x ", + addr[0], addr[1], addr[2], + addr[3], addr[4], addr[5]); + else + printf("%17s ", bat_host->name); + + printf("%4i [%c%c%c%c] (%3u) ", + vid, r, w, i, t, ttvn); + + bat_host = bat_hosts_find_by_mac((char *)orig); + if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host) + printf("%02x:%02x:%02x:%02x:%02x:%02x ", + orig[0], orig[1], orig[2], + orig[3], orig[4], orig[5]); + else + printf("%17s ", bat_host->name); + + printf("(%3u) (0x%.8x)\n", + last_ttvn, crc32); + + return NL_OK; +} + +static const int translocal_mandatory[] = { + BATADV_ATTR_TT_ADDRESS, + BATADV_ATTR_TT_VID, + BATADV_ATTR_TT_CRC32, + BATADV_ATTR_TT_FLAGS, +}; + +static int translocal_callback(struct nl_msg *msg, void *arg) +{ + int last_seen_msecs = 0, last_seen_secs = 0; + struct nlattr *attrs[BATADV_ATTR_MAX+1]; + struct nlmsghdr *nlh = nlmsg_hdr(msg); + struct print_opts *opts = arg; + struct bat_host *bat_host; + struct genlmsghdr *ghdr; + char r, p, n, x, w, i; + uint8_t *addr; + int16_t vid; + uint32_t crc32; + uint32_t flags; + + if (!genlmsg_valid_hdr(nlh, 0)) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + ghdr = nlmsg_data(nlh); + + if (ghdr->cmd != BATADV_CMD_GET_TRANSTABLE_LOCAL) + return NL_OK; + + if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0), + genlmsg_len(ghdr), policy)) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + if (missing_mandatory_attrs(attrs, translocal_mandatory, + ARRAY_SIZE(translocal_mandatory))) { + fputs("Missing attributes from kernel\n", stderr); + exit(1); + } + + addr = nla_data(attrs[BATADV_ATTR_TT_ADDRESS]); + vid = nla_get_u16(attrs[BATADV_ATTR_TT_VID]); + crc32 = nla_get_u32(attrs[BATADV_ATTR_TT_CRC32]); + flags = nla_get_u32(attrs[BATADV_ATTR_TT_FLAGS]); + last_seen_msecs = 0, last_seen_secs = 0; + + r = '.', p = '.', n = '.', x = '.', w = '.', i = '.'; + if (flags & BATADV_TT_CLIENT_ROAM) + r = 'R'; + if (flags & BATADV_TT_CLIENT_NEW) + n = 'N'; + if (flags & BATADV_TT_CLIENT_PENDING) + x = 'X'; + if (flags & BATADV_TT_CLIENT_WIFI) + w = 'W'; + if (flags & BATADV_TT_CLIENT_ISOLA) + i = 'I'; + + if (flags & BATADV_TT_CLIENT_NOPURGE) { + p = 'P'; + } else { + if (!attrs[BATADV_ATTR_LAST_SEEN_MSECS]) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + last_seen_msecs = nla_get_u32( + attrs[BATADV_ATTR_LAST_SEEN_MSECS]); + last_seen_secs = last_seen_msecs / 1000; + last_seen_msecs = last_seen_msecs % 1000; + } + + bat_host = bat_hosts_find_by_mac((char *)addr); + if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host) + printf("%02x:%02x:%02x:%02x:%02x:%02x ", + addr[0], addr[1], addr[2], + addr[3], addr[4], addr[5]); + else + printf("%17s ", bat_host->name); + + printf("%4i [%c%c%c%c%c%c] %3u.%03u (0x%.8x)\n", + vid, r, p, n, x, w, i, + last_seen_secs, last_seen_msecs, + crc32); + + return NL_OK; +} + +static const int gateways_mandatory[] = { + BATADV_ATTR_ORIG_ADDRESS, + BATADV_ATTR_TQ, + BATADV_ATTR_ROUTER, + BATADV_ATTR_HARD_IFNAME, + BATADV_ATTR_BANDWIDTH_DOWN, + BATADV_ATTR_BANDWIDTH_UP, +}; + +static int gateways_callback(struct nl_msg *msg, void *arg) +{ + struct nlattr *attrs[BATADV_ATTR_MAX+1]; + struct nlmsghdr *nlh = nlmsg_hdr(msg); + struct print_opts *opts = arg; + struct bat_host *bat_host; + struct genlmsghdr *ghdr; + const char *primary_if; + uint32_t bandwidth_down; + uint32_t bandwidth_up; + uint8_t *router; + uint8_t *orig; + char c = ' '; + uint8_t tq; + + if (!genlmsg_valid_hdr(nlh, 0)) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + ghdr = nlmsg_data(nlh); + + if (ghdr->cmd != BATADV_CMD_GET_GATEWAYS) + return NL_OK; + + if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0), + genlmsg_len(ghdr), policy)) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + if (missing_mandatory_attrs(attrs, gateways_mandatory, + ARRAY_SIZE(gateways_mandatory))) { + fputs("Missing attributes from kernel\n", stderr); + exit(1); + } + + if (attrs[BATADV_ATTR_FLAG_BEST]) + c = '*'; + + orig = nla_data(attrs[BATADV_ATTR_ORIG_ADDRESS]); + tq = nla_get_u8(attrs[BATADV_ATTR_TQ]); + router = nla_data(attrs[BATADV_ATTR_ROUTER]); + primary_if = nla_get_string(attrs[BATADV_ATTR_HARD_IFNAME]); + bandwidth_down = nla_get_u32(attrs[BATADV_ATTR_BANDWIDTH_DOWN]); + bandwidth_up = nla_get_u32(attrs[BATADV_ATTR_BANDWIDTH_UP]); + + printf("%c ", c); + + bat_host = bat_hosts_find_by_mac((char *)orig); + if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host) + printf("%02x:%02x:%02x:%02x:%02x:%02x ", + orig[0], orig[1], orig[2], + orig[3], orig[4], orig[5]); + else + printf("%17s ", bat_host->name); + + printf("(%3i) ", tq); + + bat_host = bat_hosts_find_by_mac((char *)router); + if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host) + printf("%02x:%02x:%02x:%02x:%02x:%02x ", + router[0], router[1], router[2], + router[3], router[4], router[5]); + else + printf("%17s ", bat_host->name); + + printf("[%10s]: %u.%u/%u.%u MBit\n", + primary_if, bandwidth_down / 10, bandwidth_down % 10, + bandwidth_up / 10, bandwidth_up % 10); + + return NL_OK; +} + +static const int bla_mandatory[] = { + BATADV_ATTR_BLA_ADDRESS, + BATADV_ATTR_BLA_VID, + BATADV_ATTR_BLA_BACKBONE, + BATADV_ATTR_BLA_CRC, +}; + +static int bla_claim_callback(struct nl_msg *msg, void *arg) +{ + struct nlattr *attrs[BATADV_ATTR_MAX+1]; + struct nlmsghdr *nlh = nlmsg_hdr(msg); + struct print_opts *opts = arg; + struct bat_host *bat_host; + struct genlmsghdr *ghdr; + uint16_t backbone_crc; + uint8_t *backbone; + uint8_t *client; + uint16_t vid; + char c = ' '; + + if (!genlmsg_valid_hdr(nlh, 0)) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + ghdr = nlmsg_data(nlh); + + if (ghdr->cmd != BATADV_CMD_GET_BLA_CLAIM) + return NL_OK; + + if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0), + genlmsg_len(ghdr), policy)) { + fputs("Received invalid data from kernel.\n", stderr); + exit(1); + } + + if (missing_mandatory_attrs(attrs, bla_mandatory, + ARRAY_SIZE(bla_mandatory))) { + fputs("Missing attributes from kernel\n", stderr); + exit(1); + } + + if (attrs[BATADV_ATTR_BLA_OWN]) + c = '*'; + + client = nla_data(attrs[BATADV_ATTR_BLA_ADDRESS]); + vid = nla_get_u16(attrs[BATADV_ATTR_BLA_VID]); + backbone = nla_data(attrs[BATADV_ATTR_BLA_BACKBONE]); + backbone_crc = nla_get_u16(attrs[BATADV_ATTR_BLA_CRC]); + + bat_host = bat_hosts_find_by_mac((char *)client); + if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host) + printf("%02x:%02x:%02x:%02x:%02x:%02x ", + client[0], client[1], client[2], + client[3], client[4], client[5]); + else + printf("%17s ", bat_host->name); + + printf("%5d ", vid); + + bat_host = bat_hosts_find_by_mac((char *)backbone); + if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host) + printf("%02x:%02x:%02x:%02x:%02x:%02x ", + backbone[0], backbone[1], backbone[2], + backbone[3], backbone[4], backbone[5]); + else + printf("%17s ", bat_host->name); + + printf("%c %#.4x", c, backbone_crc); + + return NL_OK; +} + +static int netlink_print_common(char *mesh_iface, int read_opt, + float orig_timeout, float watch_interval, + const char *header, uint8_t nl_cmd, + nl_recvmsg_msg_cb_t callback) +{ + struct print_opts opts = { + .read_opt = read_opt, + .orig_timeout = orig_timeout, + .watch_interval = watch_interval + }; + struct nl_sock *sock; + struct nl_msg *msg; + struct nl_cb *cb; + int ifindex; + int family; + + sock = nl_socket_alloc(); + genl_connect(sock); + + family = genl_ctrl_resolve(sock, BATADV_NL_NAME); + if (family < 0) + return -EOPNOTSUPP; + + ifindex = if_nametoindex(mesh_iface); + if (!ifindex) { + fprintf(stderr, "Interface %s is unknown\n", mesh_iface); + return -ENODEV; + } + + bat_hosts_init(read_opt); + + cb = nl_cb_alloc(NL_CB_DEFAULT); + nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, callback, &opts); + nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, stop_callback, NULL); + nl_cb_err(cb, NL_CB_CUSTOM, print_error, NULL); + + do { + if (read_opt & CLR_CONT_READ) + /* clear screen, set cursor back to 0,0 */ + printf("\033[2J\033[0;0f"); + + if (!(read_opt & SKIP_HEADER)) { + netlink_print_info(ifindex, 0); + if (header) + printf(header); + } + + msg = nlmsg_alloc(); + genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, family, 0, + NLM_F_DUMP, nl_cmd, 1); + + nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, ifindex); + nl_send_auto_complete(sock, msg); + + nlmsg_free(msg); + + last_err = 0; + nl_recvmsgs(sock, cb); + if (!last_err && read_opt & (CONT_READ|CLR_CONT_READ)) + usleep(1000000 * watch_interval); + + } while (!last_err && read_opt & (CONT_READ|CLR_CONT_READ)); + + bat_hosts_free(); + + nl_socket_free(sock); + + return last_err; +} + +int netlink_print_originators(char *mesh_iface, int read_opts, + float orig_timeout, + float watch_interval) +{ + char *header; + int ifindex; + + ifindex = if_nametoindex(mesh_iface); + if (!ifindex) { + fprintf(stderr, "Interface %s is unknown\n", mesh_iface); + return -ENODEV; + } + + netlink_print_info(ifindex, PARSE_ONLY); + + if (!algo_name) + return -EINVAL; + + if (!strcmp("BATMAN_IV", algo_name)) + header = " Originator last-seen (#/255) Nexthop [outgoingIF]\n"; + if (!strcmp("BATMAN_V", algo_name)) + header = " Originator last-seen (throughput) Nexthop [outgoingIF]\n "; + + if (!header) + return -EINVAL; + + return netlink_print_common(mesh_iface, read_opts, orig_timeout, + watch_interval, header, + BATADV_CMD_GET_ORIGINATORS, + originators_callback); +} + +int netlink_print_neighbors(char *mesh_iface, int read_opts, + float orig_timeout, + float watch_interval) +{ + return netlink_print_common(mesh_iface, read_opts, orig_timeout, + watch_interval, + "IF Neighbor last-seen\n", + BATADV_CMD_GET_NEIGHBORS, + neighbors_callback); +} + +int netlink_print_transglobal(char *mesh_iface, int read_opts, + float orig_timeout, + float watch_interval) +{ + return netlink_print_common(mesh_iface, read_opts, orig_timeout, + watch_interval, + " Client VID Flags Last ttvn Via ttvn (CRC )\n", + BATADV_CMD_GET_TRANSTABLE_GLOBAL, + transglobal_callback); +} + +int netlink_print_translocal(char *mesh_iface, int read_opts, + float orig_timeout, + float watch_interval) +{ + return netlink_print_common(mesh_iface, read_opts, orig_timeout, + watch_interval, + "Client VID Flags Last seen (CRC )\n", + BATADV_CMD_GET_TRANSTABLE_LOCAL, + translocal_callback); +} + +int netlink_print_gateways(char *mesh_iface, int read_opts, + float orig_timeout, + float watch_interval) +{ + return netlink_print_common(mesh_iface, read_opts, orig_timeout, + watch_interval, + " Router TQ Next Hop outgoingIf Bandwidth\n", + BATADV_CMD_GET_GATEWAYS, + gateways_callback); +} + +int netlink_print_bla_claim(char *mesh_iface, int read_opts, + float orig_timeout, + float watch_interval) +{ + return netlink_print_common(mesh_iface, read_opts, orig_timeout, + watch_interval, + "Client VID Originator [o] (CRC )\n", + BATADV_CMD_GET_BLA_CLAIM, + bla_claim_callback); +} -- 2.8.0.rc3

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