From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <1417354504.8367.14.camel@katze> From: Philipp Psurek Date: Sun, 30 Nov 2014 14:35:04 +0100 In-Reply-To: <547B0D0D.200@hundeboll.net> References: <1416938767-29156-1-git-send-email-sven@narfation.org> <5474CCF8.9030008@hundeboll.net> <1417343787.5442.20.camel@katze> <1417346458.6337.9.camel@katze> <547B0D0D.200@hundeboll.net> Content-Type: text/plain; charset="utf-8" Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [B.A.T.M.A.N.] [PATCH] batman-adv: Check size information when reassembling fragments Reply-To: The list for a Better Approach To Mobile Ad-hoc Networking List-Id: The list for a Better Approach To Mobile Ad-hoc Networking List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Martin =?ISO-8859-1?Q?Hundeb=F8ll?= Cc: b.a.t.m.a.n@lists.open-mesh.org Thanks Martin, hi all There has been a crash with fragmentation disabled (I save us the trace-back) so I did like you told me plus more: # git clone git://git.open-mesh.org/batman-adv.git # cd batman-adv/ # patch < ../2-frag_debug_size.patch patching file fragmentation.c Hunk #1 succeeded at 217 (offset -3 lines). Hunk #2 succeeded at 243 (offset -3 lines). Hunk #3 succeeded at 260 with fuzz 2 (offset -3 lines). Hunk #4 succeeded at 288 (offset -3 lines). patch unexpectedly ends in middle of line Hunk #5 succeeded at 301 with fuzz 1 (offset -3 lines). # make [ … ] make: *** [all] Error 2 # LANG=C make /usr/src/batman-adv/gen-compat-autoconf.sh /usr/src/batman-adv/compat-autoconf.h make -C /lib/modules/3.17.4-gentoo/build M=/usr/src/batman-adv PWD=/usr/src/batman-adv modules make[1]: Entering directory '/usr/src/linux-3.17.4-gentoo' CC [M] /usr/src/batman-adv/fragmentation.o /usr/src/batman-adv/fragmentation.c: In function 'batadv_frag_merge_packets': /usr/src/batman-adv/fragmentation.c:309:20: error: 'struct batadv_frag_table_entry' has no member named 'total_size' scripts/Makefile.build:257: recipe for target '/usr/src/batman-adv/fragmentation.o' failed make[2]: *** [/usr/src/batman-adv/fragmentation.o] Error 1 Makefile:1373: recipe for target '_module_/usr/src/batman-adv' failed make[1]: *** [_module_/usr/src/batman-adv] Error 2 make[1]: Leaving directory '/usr/src/linux-3.17.4-gentoo' Makefile:53: recipe for target 'all' failed make: *** [all] Error 2 I learned something here so I also applied this: diff --git a/types.h b/types.h index 462a70c..c4d7d24 100644 --- a/types.h +++ b/types.h @@ -132,6 +132,7 @@ struct batadv_orig_ifinfo { * @timestamp: time (jiffie) of last received fragment * @seqno: sequence number of the fragments in the list * @size: accumulated size of packets in list + * @total_size: expected size of the assembled packet */ struct batadv_frag_table_entry { struct hlist_head head; @@ -139,6 +140,7 @@ struct batadv_frag_table_entry { unsigned long timestamp; uint16_t seqno; uint16_t size; + uint16_t total_size; }; /** -- # LANG=C make # make install # rmmod batman_adv # modprobe batman_adv # batctl -v batctl 2014.3.0 [batman-adv: 2014.3.0-44-g650251a-dirty] # batctl if fastd0: active # batctl it 5000 # batctl ap disabled # batctl bl enabled # batctl dat enabled # batctl ag enabled # batctl b disabled # batctl f enabled # batctl nc Error - can't open file '/sys/class/net/bat0/mesh/network_coding': No such file or directory The option you called seems not to be compiled into your batman-adv kernel module. Consult the README if you wish to learn more about compiling options into batman-adv. # batctl mark 0x00000000/0x00000000 # batctl mm enabled # batctl ll Error - can't open file '/sys/class/net/bat0/mesh/log_level': No such file or directory The option you called seems not to be compiled into your batman-adv kernel module. Consult the README if you wish to learn more about compiling options into batman-adv. # batctl l Error - can't open file '/sys/kernel/debug//batman_adv/bat0/log': No such file or directory The option you called seems not to be compiled into your batman-adv kernel module. Consult the README if you wish to learn more about compiling options into batman-adv. # batctl gw server (announced bw: 90.0/90.0 MBit) please tell me if it’s OK that nc and l are not compiled into the module. I’ll report, if I see something. Best regards Philipp ________________________ Freifunk Rheinland e. V. – Funkzelle Wuppertal –