B.A.T.M.A.N September 2019

b.a.t.m.a.n@lists.open-mesh.org

6 participants
4 discussions

[B.A.T.M.A.N.] batman-adv and/or batmand porting effort to FreeBSD
by Mahdi Mokhtari 28 Dec '19

28 Dec '19

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.

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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 25 Nov '19

25 Nov '19

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

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[PATCH trivial 1/2] net: Fix Kconfig indentation
by Krzysztof Kozlowski 26 Sep '19

26 Sep '19

Adjust indentation from spaces to tab (+optional two spaces) as in coding style with command like: $ sed -e 's/^ /\t/' -i */Kconfig Signed-off-by: Krzysztof Kozlowski <krzk(a)kernel.org> --- net/batman-adv/Kconfig | 10 +-- net/ife/Kconfig | 2 +- net/ipv4/Kconfig | 4 +- net/ipv6/netfilter/Kconfig | 16 ++--- net/netfilter/Kconfig | 2 +- net/netfilter/ipvs/Kconfig | 6 +- net/rds/Kconfig | 4 +- net/sched/Kconfig | 144 ++++++++++++++++++------------------- 8 files changed, 94 insertions(+), 94 deletions(-) diff --git a/net/batman-adv/Kconfig b/net/batman-adv/Kconfig index a3d188dfbe75..d5028af750d5 100644 --- a/net/batman-adv/Kconfig +++ b/net/batman-adv/Kconfig @@ -12,11 +12,11 @@ config BATMAN_ADV depends on NET select LIBCRC32C help - B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is - a routing protocol for multi-hop ad-hoc mesh networks. The - networks may be wired or wireless. See - https://www.open-mesh.org/ for more information and user space - tools. + B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is + a routing protocol for multi-hop ad-hoc mesh networks. The + networks may be wired or wireless. See + https://www.open-mesh.org/ for more information and user space + tools. config BATMAN_ADV_BATMAN_V bool "B.A.T.M.A.N. V protocol" diff --git a/net/ife/Kconfig b/net/ife/Kconfig index 6cd1f6d18f30..bcf650564db4 100644 --- a/net/ife/Kconfig +++ b/net/ife/Kconfig @@ -5,7 +5,7 @@ menuconfig NET_IFE depends on NET - tristate "Inter-FE based on IETF ForCES InterFE LFB" + tristate "Inter-FE based on IETF ForCES InterFE LFB" default n help Say Y here to add support of IFE encapsulation protocol diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig index 974de4d20f25..03381f3e12ba 100644 --- a/net/ipv4/Kconfig +++ b/net/ipv4/Kconfig @@ -492,8 +492,8 @@ config TCP_CONG_WESTWOOD wired networks and throughput over wireless links. config TCP_CONG_HTCP - tristate "H-TCP" - default m + tristate "H-TCP" + default m ---help--- H-TCP is a send-side only modifications of the TCP Reno protocol stack that optimizes the performance of TCP diff --git a/net/ipv6/netfilter/Kconfig b/net/ipv6/netfilter/Kconfig index 6120a7800975..69443e9a3aa5 100644 --- a/net/ipv6/netfilter/Kconfig +++ b/net/ipv6/netfilter/Kconfig @@ -170,13 +170,13 @@ config IP6_NF_MATCH_RT To compile it as a module, choose M here. If unsure, say N. config IP6_NF_MATCH_SRH - tristate '"srh" Segment Routing header match support' - depends on NETFILTER_ADVANCED - help - srh matching allows you to match packets based on the segment + tristate '"srh" Segment Routing header match support' + depends on NETFILTER_ADVANCED + help + srh matching allows you to match packets based on the segment routing header of the packet. - To compile it as a module, choose M here. If unsure, say N. + To compile it as a module, choose M here. If unsure, say N. # The targets config IP6_NF_TARGET_HL @@ -249,10 +249,10 @@ config IP6_NF_SECURITY depends on SECURITY depends on NETFILTER_ADVANCED help - This option adds a `security' table to iptables, for use - with Mandatory Access Control (MAC) policy. + This option adds a `security' table to iptables, for use + with Mandatory Access Control (MAC) policy. - If unsure, say N. + If unsure, say N. config IP6_NF_NAT tristate "ip6tables NAT support" diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig index 34ec7afec116..91efae88e8c2 100644 --- a/net/netfilter/Kconfig +++ b/net/netfilter/Kconfig @@ -697,7 +697,7 @@ config NF_FLOW_TABLE_INET tristate "Netfilter flow table mixed IPv4/IPv6 module" depends on NF_FLOW_TABLE help - This option adds the flow table mixed IPv4/IPv6 support. + This option adds the flow table mixed IPv4/IPv6 support. To compile it as a module, choose M here. diff --git a/net/netfilter/ipvs/Kconfig b/net/netfilter/ipvs/Kconfig index f6f1a0d5c47d..5b672e05d758 100644 --- a/net/netfilter/ipvs/Kconfig +++ b/net/netfilter/ipvs/Kconfig @@ -135,7 +135,7 @@ config IP_VS_WRR module, choose M here. If unsure, say N. config IP_VS_LC - tristate "least-connection scheduling" + tristate "least-connection scheduling" ---help--- The least-connection scheduling algorithm directs network connections to the server with the least number of active @@ -145,7 +145,7 @@ config IP_VS_LC module, choose M here. If unsure, say N. config IP_VS_WLC - tristate "weighted least-connection scheduling" + tristate "weighted least-connection scheduling" ---help--- The weighted least-connection scheduling algorithm directs network connections to the server with the least active connections @@ -333,7 +333,7 @@ config IP_VS_NFCT config IP_VS_PE_SIP tristate "SIP persistence engine" - depends on IP_VS_PROTO_UDP + depends on IP_VS_PROTO_UDP depends on NF_CONNTRACK_SIP ---help--- Allow persistence based on the SIP Call-ID diff --git a/net/rds/Kconfig b/net/rds/Kconfig index 38ea7f0f2699..c64e154bc18f 100644 --- a/net/rds/Kconfig +++ b/net/rds/Kconfig @@ -23,6 +23,6 @@ config RDS_TCP This transport does not support RDMA operations. config RDS_DEBUG - bool "RDS debugging messages" + bool "RDS debugging messages" depends on RDS - default n + default n diff --git a/net/sched/Kconfig b/net/sched/Kconfig index b3faafeafab9..5b044ae6dc1e 100644 --- a/net/sched/Kconfig +++ b/net/sched/Kconfig @@ -324,7 +324,7 @@ config NET_SCH_CAKE tristate "Common Applications Kept Enhanced (CAKE)" help Say Y here if you want to use the Common Applications Kept Enhanced - (CAKE) queue management algorithm. + (CAKE) queue management algorithm. To compile this driver as a module, choose M here: the module will be called sch_cake. @@ -730,8 +730,8 @@ config NET_CLS_ACT config NET_ACT_POLICE tristate "Traffic Policing" - depends on NET_CLS_ACT - ---help--- + depends on NET_CLS_ACT + ---help--- Say Y here if you want to do traffic policing, i.e. strict bandwidth limiting. This action replaces the existing policing module. @@ -740,9 +740,9 @@ config NET_ACT_POLICE module will be called act_police. config NET_ACT_GACT - tristate "Generic actions" - depends on NET_CLS_ACT - ---help--- + tristate "Generic actions" + depends on NET_CLS_ACT + ---help--- Say Y here to take generic actions such as dropping and accepting packets. @@ -750,15 +750,15 @@ config NET_ACT_GACT module will be called act_gact. config GACT_PROB - bool "Probability support" - depends on NET_ACT_GACT - ---help--- + bool "Probability support" + depends on NET_ACT_GACT + ---help--- Say Y here to use the generic action randomly or deterministically. config NET_ACT_MIRRED - tristate "Redirecting and Mirroring" - depends on NET_CLS_ACT - ---help--- + tristate "Redirecting and Mirroring" + depends on NET_CLS_ACT + ---help--- Say Y here to allow packets to be mirrored or redirected to other devices. @@ -766,10 +766,10 @@ config NET_ACT_MIRRED module will be called act_mirred. config NET_ACT_SAMPLE - tristate "Traffic Sampling" - depends on NET_CLS_ACT - select PSAMPLE - ---help--- + tristate "Traffic Sampling" + depends on NET_CLS_ACT + select PSAMPLE + ---help--- Say Y here to allow packet sampling tc action. The packet sample action consists of statistically choosing packets and sampling them using the psample module. @@ -778,9 +778,9 @@ config NET_ACT_SAMPLE module will be called act_sample. config NET_ACT_IPT - tristate "IPtables targets" - depends on NET_CLS_ACT && NETFILTER && IP_NF_IPTABLES - ---help--- + tristate "IPtables targets" + depends on NET_CLS_ACT && NETFILTER && IP_NF_IPTABLES + ---help--- Say Y here to be able to invoke iptables targets after successful classification. @@ -788,9 +788,9 @@ config NET_ACT_IPT module will be called act_ipt. config NET_ACT_NAT - tristate "Stateless NAT" - depends on NET_CLS_ACT - ---help--- + tristate "Stateless NAT" + depends on NET_CLS_ACT + ---help--- Say Y here to do stateless NAT on IPv4 packets. You should use netfilter for NAT unless you know what you are doing. @@ -798,18 +798,18 @@ config NET_ACT_NAT module will be called act_nat. config NET_ACT_PEDIT - tristate "Packet Editing" - depends on NET_CLS_ACT - ---help--- + tristate "Packet Editing" + depends on NET_CLS_ACT + ---help--- Say Y here if you want to mangle the content of packets. To compile this code as a module, choose M here: the module will be called act_pedit. config NET_ACT_SIMP - tristate "Simple Example (Debug)" - depends on NET_CLS_ACT - ---help--- + tristate "Simple Example (Debug)" + depends on NET_CLS_ACT + ---help--- Say Y here to add a simple action for demonstration purposes. It is meant as an example and for debugging purposes. It will print a configured policy string followed by the packet count @@ -821,9 +821,9 @@ config NET_ACT_SIMP module will be called act_simple. config NET_ACT_SKBEDIT - tristate "SKB Editing" - depends on NET_CLS_ACT - ---help--- + tristate "SKB Editing" + depends on NET_CLS_ACT + ---help--- Say Y here to change skb priority or queue_mapping settings. If unsure, say N. @@ -832,10 +832,10 @@ config NET_ACT_SKBEDIT module will be called act_skbedit. config NET_ACT_CSUM - tristate "Checksum Updating" - depends on NET_CLS_ACT && INET - select LIBCRC32C - ---help--- + tristate "Checksum Updating" + depends on NET_CLS_ACT && INET + select LIBCRC32C + ---help--- Say Y here to update some common checksum after some direct packet alterations. @@ -854,9 +854,9 @@ config NET_ACT_MPLS module will be called act_mpls. config NET_ACT_VLAN - tristate "Vlan manipulation" - depends on NET_CLS_ACT - ---help--- + tristate "Vlan manipulation" + depends on NET_CLS_ACT + ---help--- Say Y here to push or pop vlan headers. If unsure, say N. @@ -865,9 +865,9 @@ config NET_ACT_VLAN module will be called act_vlan. config NET_ACT_BPF - tristate "BPF based action" - depends on NET_CLS_ACT - ---help--- + tristate "BPF based action" + depends on NET_CLS_ACT + ---help--- Say Y here to execute BPF code on packets. The BPF code will decide if the packet should be dropped or not. @@ -877,10 +877,10 @@ config NET_ACT_BPF module will be called act_bpf. config NET_ACT_CONNMARK - tristate "Netfilter Connection Mark Retriever" - depends on NET_CLS_ACT && NETFILTER && IP_NF_IPTABLES - depends on NF_CONNTRACK && NF_CONNTRACK_MARK - ---help--- + tristate "Netfilter Connection Mark Retriever" + depends on NET_CLS_ACT && NETFILTER && IP_NF_IPTABLES + depends on NF_CONNTRACK && NF_CONNTRACK_MARK + ---help--- Say Y here to allow retrieving of conn mark If unsure, say N. @@ -889,10 +889,10 @@ config NET_ACT_CONNMARK module will be called act_connmark. config NET_ACT_CTINFO - tristate "Netfilter Connection Mark Actions" - depends on NET_CLS_ACT && NETFILTER && IP_NF_IPTABLES - depends on NF_CONNTRACK && NF_CONNTRACK_MARK - help + tristate "Netfilter Connection Mark Actions" + depends on NET_CLS_ACT && NETFILTER && IP_NF_IPTABLES + depends on NF_CONNTRACK && NF_CONNTRACK_MARK + help Say Y here to allow transfer of a connmark stored information. Current actions transfer connmark stored DSCP into ipv4/v6 diffserv and/or to transfer connmark to packet @@ -906,21 +906,21 @@ config NET_ACT_CTINFO module will be called act_ctinfo. config NET_ACT_SKBMOD - tristate "skb data modification action" - depends on NET_CLS_ACT - ---help--- - Say Y here to allow modification of skb data + tristate "skb data modification action" + depends on NET_CLS_ACT + ---help--- + Say Y here to allow modification of skb data - If unsure, say N. + If unsure, say N. - To compile this code as a module, choose M here: the - module will be called act_skbmod. + To compile this code as a module, choose M here: the + module will be called act_skbmod. config NET_ACT_IFE - tristate "Inter-FE action based on IETF ForCES InterFE LFB" - depends on NET_CLS_ACT - select NET_IFE - ---help--- + tristate "Inter-FE action based on IETF ForCES InterFE LFB" + depends on NET_CLS_ACT + select NET_IFE + ---help--- Say Y here to allow for sourcing and terminating metadata For details refer to netdev01 paper: "Distributing Linux Traffic Control Classifier-Action Subsystem" @@ -930,9 +930,9 @@ config NET_ACT_IFE module will be called act_ife. config NET_ACT_TUNNEL_KEY - tristate "IP tunnel metadata manipulation" - depends on NET_CLS_ACT - ---help--- + tristate "IP tunnel metadata manipulation" + depends on NET_CLS_ACT + ---help--- Say Y here to set/release ip tunnel metadata. If unsure, say N. @@ -941,9 +941,9 @@ config NET_ACT_TUNNEL_KEY module will be called act_tunnel_key. config NET_ACT_CT - tristate "connection tracking tc action" - depends on NET_CLS_ACT && NF_CONNTRACK && NF_NAT - help + tristate "connection tracking tc action" + depends on NET_CLS_ACT && NF_CONNTRACK && NF_NAT + help Say Y here to allow sending the packets to conntrack module. If unsure, say N. @@ -952,16 +952,16 @@ config NET_ACT_CT module will be called act_ct. config NET_IFE_SKBMARK - tristate "Support to encoding decoding skb mark on IFE action" - depends on NET_ACT_IFE + tristate "Support to encoding decoding skb mark on IFE action" + depends on NET_ACT_IFE config NET_IFE_SKBPRIO - tristate "Support to encoding decoding skb prio on IFE action" - depends on NET_ACT_IFE + tristate "Support to encoding decoding skb prio on IFE action" + depends on NET_ACT_IFE config NET_IFE_SKBTCINDEX - tristate "Support to encoding decoding skb tcindex on IFE action" - depends on NET_ACT_IFE + tristate "Support to encoding decoding skb tcindex on IFE action" + depends on NET_ACT_IFE config NET_TC_SKB_EXT bool "TC recirculation support" -- 2.17.1

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How to give stable MAC address to batman-adv device?
by batman.mexon＠spamgourmet.com 01 Sep '19

01 Sep '19

Hi, I'm trying to use batman-adv to fix wifi signal problems with a few Raspberry Pis. So far it's more-or-less working. I'm using dnsmasq on the main gateway node to serve IP addresses over DHCP. One problem I have is that the bat0 device has a different MAC address each time it starts. My Raspbery Pis reboot each day on a cron job and each time they get a new MAC. This causes dnsmasq to give them a new IP address. This causes problems talking to other nodes with outdated DNS caches, as well as being irritating when I try to use ssh and it thinks the nodes are "impersonating" each other. Is there a way to force batman-adv to use a stable MAC address? Thanks, Matthew Exon

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B.A.T.M.A.N September 2019