March 2019 - B.A.T.M.A.N - lists.open-mesh.org

[B.A.T.M.A.N.] batman-adv and/or batmand porting effort to FreeBSD

by Mahdi Mokhtari

Hi, After some time of playing with the B.A.T.M.A.N protocol and net-interface on OpenWRT and Debian I was thinking to use it with the servers I use everyday (and maybe on routers/appliances I have nanoBSD on). So I started an effort... (As a background) I already ported some applications to FreeBSD [and I'm maintaining them] and also I did work already on the Linux emulation layer of FreeBSD (FreeBSD has a Linux syscall-emulation and Linux-KPI layers). So my approach (as naturally I didn't expect the build of batman-adv.ko to be successful as is), was based on the approach that we [at FreeBSD] did to port Linux's drm... <https://github.com/FreeBSDDesktop/kms-drm> I ended up in adding some header-files to FreeBSD Linux-KPI (like average.h, percpu.h, ...). Now I'm at a state that Netlink blocks me and I'm to determine next step :-) [Which I don't assume it being trivial with my current approach] So I'd like to ask: 1- Is it better approach to "rewrite" batman-adv.ko [at least Netlink-ish (let's call "Linuxism") parts] than what I'm doing now? 2- Any other efforts are being done out there? 3- is batmand deprecated [So I should mainly focus on batman-adv.ko]? 4- any other comments do you have? :D P.S. sorry if I'm not really good at starting conversation from scratch and out-of-nowhere :D but I hope by continuing the collaboration we can have better (more enriched) FreeBSD and better (as in more portable) B.A.T.M.A.N :-) -- Best regards, MMokhi.

1 year

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[B.A.T.M.A.N.] [PATCH v5 0/7] B.A.T.M.A.N. V - fallback to tp meter estimation if throughput otherwise not available

by Marek Lindner

Under normal circumstances B.A.T.M.A.N. V retrieves the neighbor throughput values to populate its metric tables from the various drivers such as WiFi throughput tables and Ethernet throughput.. Whenever the interface drivers do not export link throughput information manual overrides become necessary. To further automate and thus better support these setups, ELP may call the batman-adv throughput meter to schedule a throughput estimation to be used to populate the metric table. v5: * fix tp_vars refcount on queue_work() failure * squash batadv_tp_start_work() into batadv_tp_start() v4: * read tp measurement result only once v3: * fix ELP tp meter result computation * use batadv_has_timed_out() instead of custom implementation * set ELP tp meter test duration to 1000ms in patch #6 * add comment explaining periodic scheduling v2: * added sysfs attribute to configure tp meter test duration * fixed null pointer dereference in TP meter packet sending routine * fixed storing the measured throughput in the correct variable * checkpatch/kerneldoc/sparse/smatch cleanup Antonio Quartulli (3): batman-adv: tp_meter - prevent concurrent tp_meter sessions by using workqueue batman-adv: tp_meter - don't check for existing session batman-adv: tp_meter - add option to perform one-hop test Marek Lindner (4): batman-adv: tp_meter - allow up to 10 queued sessions batman-adv: tp_meter - add caller distinction batman-adv: ELP - use tp meter to estimate the throughput if otherwise not available batman-adv: ELP - add throughput meter test duration attribute .../ABI/testing/sysfs-class-net-batman-adv | 7 + include/uapi/linux/batadv_packet.h | 2 + net/batman-adv/bat_v.c | 1 + net/batman-adv/bat_v_elp.c | 69 ++- net/batman-adv/bat_v_elp.h | 21 + net/batman-adv/main.c | 10 +- net/batman-adv/main.h | 7 +- net/batman-adv/netlink.c | 3 +- net/batman-adv/routing.c | 6 +- net/batman-adv/sysfs.c | 3 + net/batman-adv/tp_meter.c | 484 +++++++++++------- net/batman-adv/tp_meter.h | 11 +- net/batman-adv/types.h | 36 ++ 13 files changed, 453 insertions(+), 207 deletions(-) -- 2.18.0

1 year, 1 month

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[B.A.T.M.A.N.] [PATCH] batman-adv: handle race condition for claims also in batadv_bla_rx

by Simon Wunderlich

From: Andreas Pape <apape(a)phoenixcontact.com> Like in the case of the patch for batadv_bla_tx to handle a race condition when claiming a mac address for bla, a similar situation can occur when claiming is triggered via batadv_bla_rx. This patch solves this with a similar approach as for batadv_bla_tx. Signed-off-by: Andreas Pape <apape(a)phoenixcontact.com> --- net/batman-adv/bridge_loop_avoidance.c | 31 ++++++++++++++++++++----------- net/batman-adv/translation-table.c | 26 ++++++++++++++++++++++++++ net/batman-adv/translation-table.h | 3 +++ 3 files changed, 49 insertions(+), 11 deletions(-) diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c index d07e89e..cab8980 100644 --- a/net/batman-adv/bridge_loop_avoidance.c +++ b/net/batman-adv/bridge_loop_avoidance.c @@ -1847,19 +1847,28 @@ bool batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, if (!claim) { /* possible optimization: race for a claim */ - /* No claim exists yet, claim it for us! + /* Make sure this packet is not looping back + * from our own backbone. */ - batadv_dbg(BATADV_DBG_BLA, bat_priv, - "bla_rx(): Unclaimed MAC %pM found. Claim it. Local: %s\n", - ethhdr->h_source, - batadv_is_my_client(bat_priv, - ethhdr->h_source, vid) ? - "yes" : "no"); - batadv_handle_claim(bat_priv, primary_if, - primary_if->net_dev->dev_addr, - ethhdr->h_source, vid); - goto allow; + if (batadv_tt_local_has_timed_out(bat_priv, ethhdr->h_source, + vid, 100)) { + /* No claim exists yet, claim it for us! + */ + batadv_dbg(BATADV_DBG_BLA, bat_priv, + "bla_rx(): Unclaimed MAC %pM found. Claim it. Local: %s\n", + ethhdr->h_source, + batadv_is_my_client(bat_priv, + ethhdr->h_source, vid) ? + "yes" : "no"); + + batadv_handle_claim(bat_priv, primary_if, + primary_if->net_dev->dev_addr, + ethhdr->h_source, vid); + goto allow; + } else { + goto handled; + } } /* if it is our own claim ... */ diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index e75b493..b908195 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -4380,3 +4380,29 @@ void batadv_tt_cache_destroy(void) kmem_cache_destroy(batadv_tt_req_cache); kmem_cache_destroy(batadv_tt_roam_cache); } + +bool batadv_tt_local_has_timed_out(struct batadv_priv *bat_priv, + const u8 *addr, unsigned short vid, + unsigned int timeout) +{ + struct batadv_tt_local_entry *tt_local_entry; + bool ret = true; + + tt_local_entry = batadv_tt_local_hash_find(bat_priv, addr, vid); + if (!tt_local_entry) + goto out; + /* Check if the client has been logically deleted (but is kept for + * consistency purpose) + */ + if ((tt_local_entry->common.flags & BATADV_TT_CLIENT_PENDING) || + (tt_local_entry->common.flags & BATADV_TT_CLIENT_ROAM)) + goto out; + /* Check that the tt_local_entry has a certain age */ + if (!batadv_has_timed_out(tt_local_entry->last_seen, timeout)) + ret = false; + +out: + if (tt_local_entry) + batadv_tt_local_entry_put(tt_local_entry); + return ret; +} diff --git a/net/batman-adv/translation-table.h b/net/batman-adv/translation-table.h index 411d586..b05d0d8 100644 --- a/net/batman-adv/translation-table.h +++ b/net/batman-adv/translation-table.h @@ -65,5 +65,8 @@ bool batadv_tt_global_is_isolated(struct batadv_priv *bat_priv, int batadv_tt_cache_init(void); void batadv_tt_cache_destroy(void); +bool batadv_tt_local_has_timed_out(struct batadv_priv *bat_priv, + const u8 *addr, unsigned short vid, + unsigned int timeout); #endif /* _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ */ -- 1.7.0.4

1 year, 6 months

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[B.A.T.M.A.N.] [RFC maint v2] batman-adv: fix adding VLANs with partial state

by Marek Lindner

Whenever a new VLAN is created on top of batman virtual interfaces the batman-adv kernel module creates internal structures to track the status of said VLAN. Amongst other things, the MAC address of the VLAN interface itself has to be stored. Without this change a VLAN and its infrastructure could be created while the interface MAC address is not stored without triggering any error, thus creating issues in other parts of the code. Prevent the VLAN from being created if the MAC address can not be stored. Fixes: 952cebb57518 ("batman-adv: add per VLAN interface attribute framework") Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> --- net/batman-adv/hard-interface.c | 2 +- net/batman-adv/soft-interface.c | 105 ++++++++++++++++++++++++-------- net/batman-adv/soft-interface.h | 3 +- 3 files changed, 83 insertions(+), 27 deletions(-) diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index c405d15b..0b22cc4d 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -1000,7 +1000,7 @@ static int batadv_hard_if_event(struct notifier_block *this, if (batadv_softif_is_valid(net_dev) && event == NETDEV_REGISTER) { batadv_sysfs_add_meshif(net_dev); bat_priv = netdev_priv(net_dev); - batadv_softif_create_vlan(bat_priv, BATADV_NO_FLAGS); + batadv_softif_create_vlan_late(bat_priv, BATADV_NO_FLAGS); return NOTIFY_DONE; } diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index edeffcb9..728d9d40 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -563,16 +563,36 @@ struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv, } /** - * batadv_softif_create_vlan() - allocate the needed resources for a new vlan + * batadv_softif_destroy_vlan() - remove and destroy a softif_vlan object + * @bat_priv: the bat priv with all the soft interface information + * @vlan: the object to remove + */ +static void batadv_softif_destroy_vlan(struct batadv_priv *bat_priv, + struct batadv_softif_vlan *vlan) +{ + /* explicitly remove the associated TT local entry because it is marked + * with the NOPURGE flag + */ + batadv_tt_local_remove(bat_priv, bat_priv->soft_iface->dev_addr, + vlan->vid, "vlan interface destroyed", false); + + batadv_sysfs_del_vlan(bat_priv, vlan); + batadv_softif_vlan_put(vlan); +} + +/** + * batadv_softif_create_vlan_early() - allocate the needed resources for a new + * vlan, defer sysfs creation till later * @bat_priv: the bat priv with all the soft interface information * @vid: the VLAN identifier * * Return: 0 on success, a negative error otherwise. */ -int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid) +static int batadv_softif_create_vlan_early(struct batadv_priv *bat_priv, + unsigned short vid) { struct batadv_softif_vlan *vlan; - int err; + bool client_added; vlan = batadv_softif_vlan_get(bat_priv, vid); if (vlan) { @@ -590,12 +610,6 @@ int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid) atomic_set(&vlan->ap_isolation, 0); - err = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan); - if (err) { - kfree(vlan); - return err; - } - spin_lock_bh(&bat_priv->softif_vlan_list_lock); kref_get(&vlan->refcount); hlist_add_head_rcu(&vlan->list, &bat_priv->softif_vlan_list); @@ -604,32 +618,63 @@ int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid) /* add a new TT local entry. This one will be marked with the NOPURGE * flag */ - batadv_tt_local_add(bat_priv->soft_iface, - bat_priv->soft_iface->dev_addr, vid, - BATADV_NULL_IFINDEX, BATADV_NO_MARK); + client_added = batadv_tt_local_add(bat_priv->soft_iface, + bat_priv->soft_iface->dev_addr, vid, + BATADV_NULL_IFINDEX, BATADV_NO_MARK); /* don't return reference to new softif_vlan */ batadv_softif_vlan_put(vlan); + if (!client_added) { + batadv_softif_destroy_vlan(bat_priv, vlan); + return -ENOENT; + } + return 0; } /** - * batadv_softif_destroy_vlan() - remove and destroy a softif_vlan object + * batadv_softif_create_vlan_late() - complete softif vlan creation with the + * sysfs entries * @bat_priv: the bat priv with all the soft interface information - * @vlan: the object to remove + * @vid: the VLAN identifier + * + * Return: 0 on success, a negative error otherwise. */ -static void batadv_softif_destroy_vlan(struct batadv_priv *bat_priv, - struct batadv_softif_vlan *vlan) +int batadv_softif_create_vlan_late(struct batadv_priv *bat_priv, + unsigned short vid) { - /* explicitly remove the associated TT local entry because it is marked - * with the NOPURGE flag - */ - batadv_tt_local_remove(bat_priv, bat_priv->soft_iface->dev_addr, - vlan->vid, "vlan interface destroyed", false); + struct batadv_softif_vlan *vlan; + int ret; + + vlan = batadv_softif_vlan_get(bat_priv, vid); + if (!vlan) + return -ENOENT; + + ret = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan); - batadv_sysfs_del_vlan(bat_priv, vlan); batadv_softif_vlan_put(vlan); + return ret; +} + +/** + * batadv_softif_create_vlan() - allocate the needed resources for a new vlan + * @bat_priv: the bat priv with all the soft interface information + * @vid: the VLAN identifier + * + * Return: 0 on success, a negative error otherwise. + */ +static int batadv_softif_create_vlan(struct batadv_priv *bat_priv, + unsigned short vid) +{ + int err; + + err = batadv_softif_create_vlan_early(bat_priv, vid); + if (err) + return err; + + err = batadv_softif_create_vlan_late(bat_priv, vid); + return err; } /** @@ -648,6 +693,7 @@ static int batadv_interface_add_vid(struct net_device *dev, __be16 proto, { struct batadv_priv *bat_priv = netdev_priv(dev); struct batadv_softif_vlan *vlan; + bool client_added; int ret; /* only 802.1Q vlans are supported. @@ -683,9 +729,14 @@ static int batadv_interface_add_vid(struct net_device *dev, __be16 proto, * flag. This must be added again, even if the vlan object already * exists, because the entry was deleted by kill_vid() */ - batadv_tt_local_add(bat_priv->soft_iface, - bat_priv->soft_iface->dev_addr, vid, - BATADV_NULL_IFINDEX, BATADV_NO_MARK); + client_added = batadv_tt_local_add(bat_priv->soft_iface, + bat_priv->soft_iface->dev_addr, vid, + BATADV_NULL_IFINDEX, BATADV_NO_MARK); + + if (!client_added) { + batadv_softif_destroy_vlan(bat_priv, vlan); + return -ENOENT; + } return 0; } @@ -850,6 +901,10 @@ static int batadv_softif_init_late(struct net_device *dev) if (ret < 0) goto unreg_debugfs; + ret = batadv_softif_create_vlan_early(bat_priv, BATADV_NO_FLAGS); + if (ret < 0) + goto unreg_debugfs; + return 0; unreg_debugfs: diff --git a/net/batman-adv/soft-interface.h b/net/batman-adv/soft-interface.h index daf87f07..b8a9a3c8 100644 --- a/net/batman-adv/soft-interface.h +++ b/net/batman-adv/soft-interface.h @@ -36,7 +36,8 @@ struct net_device *batadv_softif_create(struct net *net, const char *name); void batadv_softif_destroy_sysfs(struct net_device *soft_iface); bool batadv_softif_is_valid(const struct net_device *net_dev); extern struct rtnl_link_ops batadv_link_ops; -int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid); +int batadv_softif_create_vlan_late(struct batadv_priv *bat_priv, + unsigned short vid); void batadv_softif_vlan_put(struct batadv_softif_vlan *softif_vlan); struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv, unsigned short vid); -- 2.17.0

1 year, 7 months

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[B.A.T.M.A.N.] About making batman-adv mesh network invisible (by encrypting Beacon frame)

by Xuebing Wang

Hi community, We have batman-adv + OpenWRT + ath9k chip + ath9k driver reliably running for about 2 years. The biggest batman-adv mesh network is with 100+ nodes. As this is a closed network, we have a new requirement which is to make our batman-adv mesh network invisible, although the current SSID is just some meaningless characters. One thought is hidden_ssid. But, it seems hidden_ssid is only supported for AP mode (not IBSS mode). 802.11w does not protect Beacon frame (because it is before four-ways handshake). As this is a closed network, what about encrypting Beacon (maybe all management frames later) using a hard-coded key in wpa_supplicant? Thanks for your help. Xuebing Wang

1 year, 9 months

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[B.A.T.M.A.N.] [PATCH] batman-adv: Increase purge timeout on DAT DHT candidates

by Linus Lüssing

Currently, the DHT_GET messages of the DAT will likely be left unanswered due to the following issues: When a node has a matching DAT Cache entry for a local ARP Request then this node will answer it directly with the information provided by the cache. This however, will likely lead to missing ARP Replies from the original host. Which in turn leads to the DAT cache not being updated. Then the local DAT cache entry will time out, triggering a unicasted DHT_GET. However, as the 5min. timeout has passed, the DAT DHT candidates will likely have purged their entry, too. So basically this results in an ARP Request broadcast fallback every five minutes. A second issue is that it is quite common that a host which has long gone offline will be tried to be contacted by another one at some remote period larger than the current 5min. timeout. This too leads to flooded ARP Requests. With this patch the purge timeout for local DAT cache entries and entries submitted via a DHT_PUT message is differentiated: While the former stays at 5min. the latter is increased to 30min. Which decreases the rate of broadcasted ARP Requests. Signed-off-by: Linus Lüssing <linus.luessing(a)c0d3.blue> --- Some old investigations and analysis seemed to indicate a potential reduction of 91.71% of unanswered ARP Requests (45min: 97.95%, 60min: 98.95%): https://www.open-mesh.org/projects/batman-adv/wiki/DAT_DHCP_Snooping This patch is rebased on top of: "batman-adv: DHCP snooping for DAT" And it is a follow-up of: "batman-adv: Increase DHCP snooped DAT entry purge timeout in DHT" - https://patchwork.open-mesh.org/patch/17364/ --- net/batman-adv/distributed-arp-table.c | 39 ++++++++++++++++++++++------------ net/batman-adv/distributed-arp-table.h | 3 ++- net/batman-adv/main.h | 2 ++ net/batman-adv/routing.c | 8 ++++--- net/batman-adv/types.h | 5 +++++ 5 files changed, 39 insertions(+), 18 deletions(-) diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c index 899ab051..34898abf 100644 --- a/net/batman-adv/distributed-arp-table.c +++ b/net/batman-adv/distributed-arp-table.c @@ -152,7 +152,9 @@ static void batadv_dat_entry_put(struct batadv_dat_entry *dat_entry) static bool batadv_dat_to_purge(struct batadv_dat_entry *dat_entry) { return batadv_has_timed_out(dat_entry->last_update, - BATADV_DAT_ENTRY_TIMEOUT); + BATADV_DAT_ENTRY_TIMEOUT) && + batadv_has_timed_out(dat_entry->last_dht_update, + BATADV_DAT_DHT_TIMEOUT); } /** @@ -369,9 +371,11 @@ batadv_dat_entry_hash_find(struct batadv_priv *bat_priv, __be32 ip, * @ip: ipv4 to add/edit * @mac_addr: mac address to assign to the given ipv4 * @vid: VLAN identifier + * @extended_timeout: whether this should be cached with an extended timeout */ -static void batadv_dat_entry_add(struct batadv_priv *bat_priv, __be32 ip, - u8 *mac_addr, unsigned short vid) +static void +batadv_dat_entry_add(struct batadv_priv *bat_priv, __be32 ip, u8 *mac_addr, + unsigned short vid, bool extended_timeout) { struct batadv_dat_entry *dat_entry; int hash_added; @@ -382,6 +386,10 @@ static void batadv_dat_entry_add(struct batadv_priv *bat_priv, __be32 ip, if (!batadv_compare_eth(dat_entry->mac_addr, mac_addr)) ether_addr_copy(dat_entry->mac_addr, mac_addr); dat_entry->last_update = jiffies; + + if (extended_timeout) + dat_entry->last_dht_update = jiffies; + batadv_dbg(BATADV_DBG_DAT, bat_priv, "Entry updated: %pI4 %pM (vid: %d)\n", &dat_entry->ip, dat_entry->mac_addr, @@ -397,6 +405,7 @@ static void batadv_dat_entry_add(struct batadv_priv *bat_priv, __be32 ip, dat_entry->vid = vid; ether_addr_copy(dat_entry->mac_addr, mac_addr); dat_entry->last_update = jiffies; + dat_entry->last_dht_update = extended_timeout ? jiffies : 0; kref_init(&dat_entry->refcount); kref_get(&dat_entry->refcount); @@ -1229,7 +1238,7 @@ bool batadv_dat_snoop_outgoing_arp_request(struct batadv_priv *bat_priv, hw_src = batadv_arp_hw_src(skb, hdr_size); ip_dst = batadv_arp_ip_dst(skb, hdr_size); - batadv_dat_entry_add(bat_priv, ip_src, hw_src, vid); + batadv_dat_entry_add(bat_priv, ip_src, hw_src, vid, false); dat_entry = batadv_dat_entry_hash_find(bat_priv, ip_dst, vid); if (dat_entry) { @@ -1322,7 +1331,7 @@ bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv, batadv_dbg_arp(bat_priv, skb, hdr_size, "Parsing incoming ARP REQUEST"); - batadv_dat_entry_add(bat_priv, ip_src, hw_src, vid); + batadv_dat_entry_add(bat_priv, ip_src, hw_src, vid, false); dat_entry = batadv_dat_entry_hash_find(bat_priv, ip_dst, vid); if (!dat_entry) @@ -1386,8 +1395,8 @@ void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv, hw_dst = batadv_arp_hw_dst(skb, hdr_size); ip_dst = batadv_arp_ip_dst(skb, hdr_size); - batadv_dat_entry_add(bat_priv, ip_src, hw_src, vid); - batadv_dat_entry_add(bat_priv, ip_dst, hw_dst, vid); + batadv_dat_entry_add(bat_priv, ip_src, hw_src, vid, false); + batadv_dat_entry_add(bat_priv, ip_dst, hw_dst, vid, false); /* Send the ARP reply to the candidates for both the IP addresses that * the node obtained from the ARP reply @@ -1402,12 +1411,14 @@ void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv, * @bat_priv: the bat priv with all the soft interface information * @skb: packet to check * @hdr_size: size of the encapsulation header + * @is_dht_put: whether this is a BATADV_P_DAT_DHT_PUT message * * Return: true if the packet was snooped and consumed by DAT. False if the * packet has to be delivered to the interface */ bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv, - struct sk_buff *skb, int hdr_size) + struct sk_buff *skb, int hdr_size, + bool is_dht_put) { struct batadv_dat_entry *dat_entry = NULL; u16 type; @@ -1450,8 +1461,8 @@ bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv, /* Update our internal cache with both the IP addresses the node got * within the ARP reply */ - batadv_dat_entry_add(bat_priv, ip_src, hw_src, vid); - batadv_dat_entry_add(bat_priv, ip_dst, hw_dst, vid); + batadv_dat_entry_add(bat_priv, ip_src, hw_src, vid, is_dht_put); + batadv_dat_entry_add(bat_priv, ip_dst, hw_dst, vid, is_dht_put); /* If BLA is enabled, only forward ARP replies if we have claimed the * source of the ARP reply or if no one else of the same backbone has @@ -1705,8 +1716,8 @@ static void batadv_dat_put_dhcp(struct batadv_priv *bat_priv, u8 *chaddr, skb_set_network_header(skb, ETH_HLEN); - batadv_dat_entry_add(bat_priv, yiaddr, chaddr, vid); - batadv_dat_entry_add(bat_priv, ip_dst, hw_dst, vid); + batadv_dat_entry_add(bat_priv, yiaddr, chaddr, vid, false); + batadv_dat_entry_add(bat_priv, ip_dst, hw_dst, vid, false); batadv_dat_send_data(bat_priv, skb, yiaddr, vid, BATADV_P_DAT_DHT_PUT); batadv_dat_send_data(bat_priv, skb, ip_dst, vid, BATADV_P_DAT_DHT_PUT); @@ -1827,8 +1838,8 @@ void batadv_dat_snoop_incoming_dhcp_ack(struct batadv_priv *bat_priv, hw_src = ethhdr->h_source; vid = batadv_dat_get_vid(skb, &hdr_size); - batadv_dat_entry_add(bat_priv, yiaddr, chaddr, vid); - batadv_dat_entry_add(bat_priv, ip_src, hw_src, vid); + batadv_dat_entry_add(bat_priv, yiaddr, chaddr, vid, false); + batadv_dat_entry_add(bat_priv, ip_src, hw_src, vid, false); batadv_dbg(BATADV_DBG_DAT, bat_priv, "Snooped from incoming DHCPACK (server address): %pI4, %pM (vid: %i)\n", diff --git a/net/batman-adv/distributed-arp-table.h b/net/batman-adv/distributed-arp-table.h index 68c0ff32..21dbf285 100644 --- a/net/batman-adv/distributed-arp-table.h +++ b/net/batman-adv/distributed-arp-table.h @@ -45,7 +45,8 @@ bool batadv_dat_snoop_incoming_arp_request(struct batadv_priv *bat_priv, void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv, struct sk_buff *skb); bool batadv_dat_snoop_incoming_arp_reply(struct batadv_priv *bat_priv, - struct sk_buff *skb, int hdr_size); + struct sk_buff *skb, int hdr_size, + bool is_dht_put); void batadv_dat_snoop_outgoing_dhcp_ack(struct batadv_priv *bat_priv, struct sk_buff *skb, __be16 proto, diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h index 05cb9080..6c1488f8 100644 --- a/net/batman-adv/main.h +++ b/net/batman-adv/main.h @@ -51,6 +51,8 @@ #define BATADV_ORIG_WORK_PERIOD 1000 /* 1 second */ #define BATADV_MCAST_WORK_PERIOD 500 /* 0.5 seconds */ #define BATADV_DAT_ENTRY_TIMEOUT (5 * 60000) /* 5 mins in milliseconds */ +#define BATADV_DAT_DHT_TIMEOUT (30 * 60000) /* 30 mins in milliseconds */ + /* sliding packet range of received originator messages in sequence numbers * (should be a multiple of our word size) */ diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c index cae0e5dd..2b5d50ab 100644 --- a/net/batman-adv/routing.c +++ b/net/batman-adv/routing.c @@ -974,7 +974,7 @@ int batadv_recv_unicast_packet(struct sk_buff *skb, int check, hdr_size = sizeof(*unicast_packet); enum batadv_subtype subtype; int ret = NET_RX_DROP; - bool is4addr, is_gw; + bool is4addr, is_gw, is_dht_put = false; unicast_packet = (struct batadv_unicast_packet *)skb->data; is4addr = unicast_packet->packet_type == BATADV_UNICAST_4ADDR; @@ -1033,6 +1033,8 @@ int batadv_recv_unicast_packet(struct sk_buff *skb, orig_addr = unicast_4addr_packet->src; orig_node = batadv_orig_hash_find(bat_priv, orig_addr); + } else if (subtype == BATADV_P_DAT_DHT_PUT) { + is_dht_put = true; } } @@ -1040,7 +1042,7 @@ int batadv_recv_unicast_packet(struct sk_buff *skb, hdr_size)) goto rx_success; if (batadv_dat_snoop_incoming_arp_reply(bat_priv, skb, - hdr_size)) + hdr_size, is_dht_put)) goto rx_success; batadv_dat_snoop_incoming_dhcp_ack(bat_priv, skb, hdr_size); @@ -1277,7 +1279,7 @@ int batadv_recv_bcast_packet(struct sk_buff *skb, if (batadv_dat_snoop_incoming_arp_request(bat_priv, skb, hdr_size)) goto rx_success; - if (batadv_dat_snoop_incoming_arp_reply(bat_priv, skb, hdr_size)) + if (batadv_dat_snoop_incoming_arp_reply(bat_priv, skb, hdr_size, false)) goto rx_success; batadv_dat_snoop_incoming_dhcp_ack(bat_priv, skb, hdr_size); diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index a21b34ed..74801d79 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -2280,6 +2280,11 @@ struct batadv_dat_entry { */ unsigned long last_update; + /** + * @last_dht_update: time in jiffies when a DHT_PUT was last received + */ + unsigned long last_dht_update; + /** @hash_entry: hlist node for &batadv_priv_dat.hash */ struct hlist_node hash_entry; -- 2.11.0

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[B.A.T.M.A.N.] [PATCH] batman-adv: genetlink: make policy common to family

by Sven Eckelmann

From: Johannes Berg <johannes.berg(a)intel.com> Since maxattr is common, the policy can't really differ sanely, so make it common as well. The only user that did in fact manage to make a non-common policy is taskstats, which has to be really careful about it (since it's still using a common maxattr!). This is no longer supported, but we can fake it using pre_doit. This reduces the size of e.g. nl80211.o (which has lots of commands): text data bss dec hex filename 398745 14323 2240 415308 6564c net/wireless/nl80211.o (before) 397913 14331 2240 414484 65314 net/wireless/nl80211.o (after) -------------------------------- -832 +8 0 -824 Which is obviously just 8 bytes for each command, and an added 8 bytes for the new policy pointer. I'm not sure why the ops list is counted as .text though. Most of the code transformations were done using the following spatch: @ops@ identifier OPS; expression POLICY; @@ struct genl_ops OPS[] = { ..., { - .policy = POLICY, }, ... }; @@ identifier ops.OPS; expression ops.POLICY; identifier fam; expression M; @@ struct genl_family fam = { .ops = OPS, .maxattr = M, + .policy = POLICY, ... }; This also gets rid of devlink_nl_cmd_region_read_dumpit() accessing the cb->data as ops, which we want to change in a later genl patch. Signed-off-by: Johannes Berg <johannes.berg(a)intel.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> [sven(a)narfation.org: Added compat code] Signed-off-by: Sven Eckelmann <sven(a)narfation.org> --- Patch (without compat code) is already in net-next: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/commit... compat-include/linux/cache.h | 6 +-- compat-include/net/genetlink.h | 88 ++++++++++++++++++++++++++++++++++ net/batman-adv/netlink.c | 19 +------- 3 files changed, 90 insertions(+), 23 deletions(-) diff --git a/compat-include/linux/cache.h b/compat-include/linux/cache.h index efe440d1..9ddda312 100644 --- a/compat-include/linux/cache.h +++ b/compat-include/linux/cache.h @@ -13,12 +13,8 @@ #include <linux/version.h> #include_next <linux/cache.h> -#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0) +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0) -/* hack for netlink.c which marked the family ops as ro */ -#ifdef __ro_after_init -#undef __ro_after_init -#endif #define __ro_after_init #endif /* < KERNEL_VERSION(4, 6, 0) */ diff --git a/compat-include/net/genetlink.h b/compat-include/net/genetlink.h index 58fc24d7..7d17a705 100644 --- a/compat-include/net/genetlink.h +++ b/compat-include/net/genetlink.h @@ -30,4 +30,92 @@ void batadv_genl_dump_check_consistent(struct netlink_callback *cb, #endif /* < KERNEL_VERSION(4, 15, 0) */ + +#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 2, 0) + +struct batadv_genl_family { + /* data handled by the actual kernel */ + struct genl_family family; + + /* data which has to be copied to family by + * batadv_genl_register_family + */ + unsigned int hdrsize; + char name[GENL_NAMSIZ]; + unsigned int version; + unsigned int maxattr; + const struct nla_policy *policy; + bool netnsok; + int (*pre_doit)(const struct genl_ops *ops, struct sk_buff *skb, + struct genl_info *info); + void (*post_doit)(const struct genl_ops *ops, struct sk_buff *skb, + struct genl_info *info); + const struct genl_ops *ops; + const struct genl_multicast_group *mcgrps; + unsigned int n_ops; + unsigned int n_mcgrps; + struct module *module; + + /* allocated by batadv_genl_register_family and free'd by + * batadv_genl_unregister_family. Used to modify the usually read-only + * ops + */ + struct genl_ops *copy_ops; +}; + +#define genl_family batadv_genl_family + +static inline int batadv_genl_register_family(struct batadv_genl_family *family) +{ + struct genl_ops *ops; + unsigned int i; + + family->family.hdrsize = family->hdrsize; + strncpy(family->family.name, family->name, sizeof(family->family.name)); + family->family.version = family->version; + family->family.maxattr = family->maxattr; + family->family.netnsok = family->netnsok; + family->family.pre_doit = family->pre_doit; + family->family.post_doit = family->post_doit; + family->family.mcgrps = family->mcgrps; + family->family.n_ops = family->n_ops; + family->family.n_mcgrps = family->n_mcgrps; + family->family.module = family->module; + + ops = kmemdup(family->ops, sizeof(*ops) * family->n_ops, GFP_KERNEL); + if (!ops) + return -ENOMEM; + + for (i = 0; i < family->family.n_ops; i++) + ops[i].policy = family->policy; + + family->family.ops = ops; + family->copy_ops = ops; + + return genl_register_family(&family->family); +} + +#define genl_register_family(family) \ + batadv_genl_register_family((family)) + +static inline void +batadv_genl_unregister_family(struct batadv_genl_family *family) +{ + + genl_unregister_family(&family->family); + kfree(family->copy_ops); +} + +#define genl_unregister_family(family) \ + batadv_genl_unregister_family((family)) + +#define genlmsg_put(_skb, _pid, _seq, _family, _flags, _cmd) \ + genlmsg_put(_skb, _pid, _seq, &(_family)->family, _flags, _cmd) + +#define genlmsg_multicast_netns(_family, _net, _skb, _portid, _group, _flags) \ + genlmsg_multicast_netns(&(_family)->family, _net, _skb, _portid, \ + _group, _flags) + +#endif /* < KERNEL_VERSION(5, 2, 0) */ + #endif /* _NET_BATMAN_ADV_COMPAT_NET_GENETLINK_H_ */ diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c index daf56933..e7907308 100644 --- a/net/batman-adv/netlink.c +++ b/net/batman-adv/netlink.c @@ -1344,34 +1344,29 @@ static const struct genl_ops batadv_netlink_ops[] = { { .cmd = BATADV_CMD_GET_MESH, /* can be retrieved by unprivileged users */ - .policy = batadv_netlink_policy, .doit = batadv_netlink_get_mesh, .internal_flags = BATADV_FLAG_NEED_MESH, }, { .cmd = BATADV_CMD_TP_METER, .flags = GENL_ADMIN_PERM, - .policy = batadv_netlink_policy, .doit = batadv_netlink_tp_meter_start, .internal_flags = BATADV_FLAG_NEED_MESH, }, { .cmd = BATADV_CMD_TP_METER_CANCEL, .flags = GENL_ADMIN_PERM, - .policy = batadv_netlink_policy, .doit = batadv_netlink_tp_meter_cancel, .internal_flags = BATADV_FLAG_NEED_MESH, }, { .cmd = BATADV_CMD_GET_ROUTING_ALGOS, .flags = GENL_ADMIN_PERM, - .policy = batadv_netlink_policy, .dumpit = batadv_algo_dump, }, { .cmd = BATADV_CMD_GET_HARDIF, /* can be retrieved by unprivileged users */ - .policy = batadv_netlink_policy, .dumpit = batadv_netlink_dump_hardif, .doit = batadv_netlink_get_hardif, .internal_flags = BATADV_FLAG_NEED_MESH | @@ -1380,68 +1375,57 @@ static const struct genl_ops batadv_netlink_ops[] = { { .cmd = BATADV_CMD_GET_TRANSTABLE_LOCAL, .flags = GENL_ADMIN_PERM, - .policy = batadv_netlink_policy, .dumpit = batadv_tt_local_dump, }, { .cmd = BATADV_CMD_GET_TRANSTABLE_GLOBAL, .flags = GENL_ADMIN_PERM, - .policy = batadv_netlink_policy, .dumpit = batadv_tt_global_dump, }, { .cmd = BATADV_CMD_GET_ORIGINATORS, .flags = GENL_ADMIN_PERM, - .policy = batadv_netlink_policy, .dumpit = batadv_orig_dump, }, { .cmd = BATADV_CMD_GET_NEIGHBORS, .flags = GENL_ADMIN_PERM, - .policy = batadv_netlink_policy, .dumpit = batadv_hardif_neigh_dump, }, { .cmd = BATADV_CMD_GET_GATEWAYS, .flags = GENL_ADMIN_PERM, - .policy = batadv_netlink_policy, .dumpit = batadv_gw_dump, }, { .cmd = BATADV_CMD_GET_BLA_CLAIM, .flags = GENL_ADMIN_PERM, - .policy = batadv_netlink_policy, .dumpit = batadv_bla_claim_dump, }, { .cmd = BATADV_CMD_GET_BLA_BACKBONE, .flags = GENL_ADMIN_PERM, - .policy = batadv_netlink_policy, .dumpit = batadv_bla_backbone_dump, }, { .cmd = BATADV_CMD_GET_DAT_CACHE, .flags = GENL_ADMIN_PERM, - .policy = batadv_netlink_policy, .dumpit = batadv_dat_cache_dump, }, { .cmd = BATADV_CMD_GET_MCAST_FLAGS, .flags = GENL_ADMIN_PERM, - .policy = batadv_netlink_policy, .dumpit = batadv_mcast_flags_dump, }, { .cmd = BATADV_CMD_SET_MESH, .flags = GENL_ADMIN_PERM, - .policy = batadv_netlink_policy, .doit = batadv_netlink_set_mesh, .internal_flags = BATADV_FLAG_NEED_MESH, }, { .cmd = BATADV_CMD_SET_HARDIF, .flags = GENL_ADMIN_PERM, - .policy = batadv_netlink_policy, .doit = batadv_netlink_set_hardif, .internal_flags = BATADV_FLAG_NEED_MESH | BATADV_FLAG_NEED_HARDIF, @@ -1449,7 +1433,6 @@ static const struct genl_ops batadv_netlink_ops[] = { { .cmd = BATADV_CMD_GET_VLAN, /* can be retrieved by unprivileged users */ - .policy = batadv_netlink_policy, .doit = batadv_netlink_get_vlan, .internal_flags = BATADV_FLAG_NEED_MESH | BATADV_FLAG_NEED_VLAN, @@ -1457,7 +1440,6 @@ static const struct genl_ops batadv_netlink_ops[] = { { .cmd = BATADV_CMD_SET_VLAN, .flags = GENL_ADMIN_PERM, - .policy = batadv_netlink_policy, .doit = batadv_netlink_set_vlan, .internal_flags = BATADV_FLAG_NEED_MESH | BATADV_FLAG_NEED_VLAN, @@ -1469,6 +1451,7 @@ struct genl_family batadv_netlink_family __ro_after_init = { .name = BATADV_NL_NAME, .version = 1, .maxattr = BATADV_ATTR_MAX, + .policy = batadv_netlink_policy, .netnsok = true, .pre_doit = batadv_pre_doit, .post_doit = batadv_post_doit, -- 2.20.1

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Re: [B.A.T.M.A.N.] kernel BUG at drivers/android/binder_alloc.c:LINE! (3)

by syzbot

syzbot has bisected this bug to: commit 1a7c3d9bb7a926e88d5f57643e75ad1abfc55013 Author: Todd Kjos <tkjos(a)android.com> Date: Fri Feb 8 18:35:14 2019 +0000 binder: create userspace-to-binder-buffer copy function bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15b9383f200000 start commit: 1a9df9e2 Merge git://git.kernel.org/pub/scm/linux/kernel/g.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=17b9383f200000 console output: https://syzkaller.appspot.com/x/log.txt?x=13b9383f200000 kernel config: https://syzkaller.appspot.com/x/.config?x=8dcdce25ea72bedf dashboard link: https://syzkaller.appspot.com/bug?extid=f9f3f388440283da2965 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17d05637200000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1677e62f200000 Reported-by: syzbot+f9f3f388440283da2965(a)syzkaller.appspotmail.com Fixes: 1a7c3d9bb7a9 ("binder: create userspace-to-binder-buffer copy function") For information about bisection process see: https://goo.gl/tpsmEJ#bisection

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[B.A.T.M.A.N.] [PATCH 00/12] pull request for net-next: batman-adv 2019-03-28

by Simon Wunderlich

Hi David, here is our latest cleanup/feature pull request of batman-adv to go into net-next. Please pull or let me know of any problem! Thank you, Simon The following changes since commit ffa91253739ca89fc997195d8bbd1f7ba3e29fbe: Documentation: networking: Update netdev-FAQ regarding patches (2019-03-18 20:09:58 -0700) are available in the git repository at: git://git.open-mesh.org/linux-merge.git tags/batadv-next-for-davem-20190328 for you to fetch changes up to 32e727449c792b689c2a06a8b4cc9fef6270c5a7: batman-adv: Add multicast-to-unicast support for multiple targets (2019-03-25 10:01:13 +0100) ---------------------------------------------------------------- This feature/cleanup patchset includes the following patches: - Drop license boilerplate (obsoleted by SPDX license IDs), by Sven Eckelmann - Drop documentation for sysfs and debugfs Documentation, by Sven Eckelmann (2 patches) - Mark sysfs as optional and deprecated, by Sven Eckelmann (3 patches) - Update MAINTAINERS Tree, Chat and Bugtracker, by Sven Eckelmann (3 patches) - Rename batadv_dat_send_data, by Sven Eckelmann - update DAT entries with incoming ARP replies, by Linus Luessing - add multicast-to-unicast support for limited destinations, by Linus Luessing ---------------------------------------------------------------- Linus Lüssing (2): batman-adv: allow updating DAT entry timeouts on incoming ARP Replies batman-adv: Add multicast-to-unicast support for multiple targets Sven Eckelmann (10): batman-adv: Drop license boilerplate batman-adv: Drop documentation about debugfs files batman-adv: Drop documentation about sysfs files batman-adv: Make sysfs support optional batman-adv: ABI: Mark sysfs files as deprecated batman-adv: Warn about sysfs file access MAINTAINERS: Add B(ugtracker) field for batman-adv MAINTAINERS: Add C(hat) field for batman-adv MAINTAINERS: Add T(ree) field for batman-adv batman-adv: Adjust name for batadv_dat_send_data .../sysfs-class-net-batman-adv | 2 + .../ABI/{testing => obsolete}/sysfs-class-net-mesh | 2 + Documentation/networking/batman-adv.rst | 110 +++-------- MAINTAINERS | 7 +- include/uapi/linux/batadv_packet.h | 12 -- include/uapi/linux/batman_adv.h | 25 +-- net/batman-adv/Kconfig | 24 +-- net/batman-adv/Makefile | 15 +- net/batman-adv/bat_algo.c | 12 -- net/batman-adv/bat_algo.h | 12 -- net/batman-adv/bat_iv_ogm.c | 12 -- net/batman-adv/bat_iv_ogm.h | 12 -- net/batman-adv/bat_v.c | 12 -- net/batman-adv/bat_v.h | 12 -- net/batman-adv/bat_v_elp.c | 12 -- net/batman-adv/bat_v_elp.h | 12 -- net/batman-adv/bat_v_ogm.c | 12 -- net/batman-adv/bat_v_ogm.h | 12 -- net/batman-adv/bitarray.c | 12 -- net/batman-adv/bitarray.h | 12 -- net/batman-adv/bridge_loop_avoidance.c | 13 -- net/batman-adv/bridge_loop_avoidance.h | 12 -- net/batman-adv/debugfs.c | 12 -- net/batman-adv/debugfs.h | 12 -- net/batman-adv/distributed-arp-table.c | 40 ++-- net/batman-adv/distributed-arp-table.h | 12 -- net/batman-adv/fragmentation.c | 12 -- net/batman-adv/fragmentation.h | 12 -- net/batman-adv/gateway_client.c | 13 -- net/batman-adv/gateway_client.h | 12 -- net/batman-adv/gateway_common.c | 12 -- net/batman-adv/gateway_common.h | 12 -- net/batman-adv/hard-interface.c | 12 -- net/batman-adv/hard-interface.h | 12 -- net/batman-adv/hash.c | 12 -- net/batman-adv/hash.h | 12 -- net/batman-adv/icmp_socket.c | 12 -- net/batman-adv/icmp_socket.h | 12 -- net/batman-adv/log.c | 12 -- net/batman-adv/log.h | 12 -- net/batman-adv/main.c | 85 +++++++-- net/batman-adv/main.h | 14 +- net/batman-adv/multicast.c | 211 +++++++++++++++++++-- net/batman-adv/multicast.h | 30 +-- net/batman-adv/netlink.c | 23 ++- net/batman-adv/netlink.h | 12 -- net/batman-adv/network-coding.c | 12 -- net/batman-adv/network-coding.h | 12 -- net/batman-adv/originator.c | 12 -- net/batman-adv/originator.h | 12 -- net/batman-adv/routing.c | 12 -- net/batman-adv/routing.h | 12 -- net/batman-adv/send.c | 12 -- net/batman-adv/send.h | 12 -- net/batman-adv/soft-interface.c | 20 +- net/batman-adv/soft-interface.h | 12 -- net/batman-adv/sysfs.c | 128 +++++-------- net/batman-adv/sysfs.h | 50 +++-- net/batman-adv/tp_meter.c | 12 -- net/batman-adv/tp_meter.h | 12 -- net/batman-adv/trace.c | 12 -- net/batman-adv/trace.h | 12 -- net/batman-adv/translation-table.c | 17 +- net/batman-adv/translation-table.h | 16 +- net/batman-adv/tvlv.c | 12 -- net/batman-adv/tvlv.h | 12 -- net/batman-adv/types.h | 18 +- 67 files changed, 476 insertions(+), 939 deletions(-) rename Documentation/ABI/{testing => obsolete}/sysfs-class-net-batman-adv (92%) rename Documentation/ABI/{testing => obsolete}/sysfs-class-net-mesh (97%)

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[B.A.T.M.A.N.] [PATCH 0/5] pull request for net: batman-adv 2019-03-28

by Simon Wunderlich

Hi David, here are some bugfixes which we would like to have integrated into net. Please pull or let me know of any problem! Thank you, Simon The following changes since commit ffa91253739ca89fc997195d8bbd1f7ba3e29fbe: Documentation: networking: Update netdev-FAQ regarding patches (2019-03-18 20:09:58 -0700) are available in the git repository at: git://git.open-mesh.org/linux-merge.git tags/batadv-net-for-davem-20190328 for you to fetch changes up to 438b3d3fae4346a49fe12fa7cc1dc9327f006a91: batman-adv: Fix genl notification for throughput_override (2019-03-25 09:31:19 +0100) ---------------------------------------------------------------- Here are some batman-adv bugfixes: - Fix refcount underflows in bridge loop avoidance code, by Sven Eckelmann (3 patches) - Fix warning when CFG80211 isn't enabled, by Anders Roxell - Fix genl notification for throughput override, by Sven Eckelmann ---------------------------------------------------------------- Anders Roxell (1): batman-adv: fix warning in function batadv_v_elp_get_throughput Sven Eckelmann (4): batman-adv: Reduce claim hash refcnt only for removed entry batman-adv: Reduce tt_local hash refcnt only for removed entry batman-adv: Reduce tt_global hash refcnt only for removed entry batman-adv: Fix genl notification for throughput_override net/batman-adv/bat_v_elp.c | 6 ++++-- net/batman-adv/bridge_loop_avoidance.c | 16 +++++++++++++--- net/batman-adv/sysfs.c | 7 +++++-- net/batman-adv/translation-table.c | 32 ++++++++++++++++++++++++-------- 4 files changed, 46 insertions(+), 15 deletions(-)

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B.A.T.M.A.N March 2019