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2013-05-31ring_rx: if v3, free it in kernel space during closeDaniel Borkmann1-2/+7
Let this be freed by the kernel during close(2) call in case of v3 otherwise we would get a -EINVAL. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-31ring: netsniff-ng: migrate capture only to TPACKET_V3Daniel Borkmann7-128/+176
Lets migrate capturing to TPACKET_V3, since it will bring a better performance due to fewer page cache misses caused by a higher density of packets, since now they are contigous placed in the ring buffer. It is said that TPACKET_V3 brings the following benefits: *) ~15 - 20% reduction in CPU-usage *) ~20% increase in packet capture rate *) ~2x increase in packet density *) Port aggregation analysis *) Non static frame size to capture entire packet payload Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-31ring: setup frame structure for v2/v3 in a generic wayDaniel Borkmann8-18/+30
Prepare TPACKET_V3 for allowing to transparently setting up the frame structure such that we do not need to change much in the netsniff-ng/trafgen code. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-31ring: move duplicate/generic code parts from rx/tx into ring.cDaniel Borkmann7-72/+85
We do not want to maintain duplicate code, so move this into a separate file and name those *_generic() helpers. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-31ring: fix wrong error message text in __get_sockopt_tpacketDaniel Borkmann1-1/+1
Arg, this was a leftover when copying the other function. So fix it! Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-31ring: implement setup of tpacket v3 ringDaniel Borkmann3-3/+30
Implement ring setup routines and structures for TPACKET_V3. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-31man: ifpps: Mention CPU limit in first section and remove BUGS sectionTobias Klauser1-7/+2
Mention the -n command line option in the general description, not just the hard limit. Also remove the BUGS section, since this is now basically resolved. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-05-30ring: setup_{rx,tx}_ring_layout: use bool for jumbo_supportDaniel Borkmann4-4/+4
There's no good reason why we currently waste an 'int' for jumbo_support while this must better be done as 'bool'. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-30ring: prepare setup_rx_ring_layout for support in v2/v3Daniel Borkmann6-11/+28
Prepare setup_rx_ring_layout for both, v2 and v3. Also do some checks during compile time if offsets stay the same as we operate on different union mappings. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-30ring: add necessary structures and helper functions for v3Daniel Borkmann2-1/+15
Prepare and add some structures an helper functions for TPACKET_V3. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-30ring: move poll related fallback define to built_in.hDaniel Borkmann2-10/+12
It rather belongs to built_in.h, and not here. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-30ring: minor: remove define since only used onceDaniel Borkmann1-3/+1
We only use it once and nowhere else, so just replace the correct value right away. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-30ring: add set_sockopt_tpacket_v3 and refactor othersDaniel Borkmann1-4/+12
Add set_sockopt_tpacket_v3() in preparation for TPACKET_V3. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-30Merge branch 'master' of github.com:borkmann/netsniff-ngDaniel Borkmann3-18/+30
Needed to let Git merge to not run into conflicts with Tobias' set of changes on ifpps resp. ifpps manpage. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-30man: manpage hyphen fixes, take threeKartik Mistry1-7/+7
More hyphen fixes all over. Signed-off-by: Kartik Mistry <kartik@debian.org> Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-30man: manpage hyphen fixes, take twoKartik Mistry3-108/+109
Fix hyphens all over. Signed-off-by: Kartik Mistry <kartik@debian.org> Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-30ifpps: Allow to select number of top hitter CPUs by command line optionTobias Klauser2-15/+28
Instead of hard-coding the maximum number of top hitter CPUs, allow the user to set it manually using a command line option. The default value (if no command line parameter is specified) remains at 10. Also update the manpage accordingly. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-05-30netsniff-ng: Add __maybe_unused attribute to timer functionsTobias Klauser1-3/+2
The two functions timer_elapsed() and timer_next_dump() both take an argument which they don't use. Annotate them appropriately using the __maybe_unused attribute. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-05-30ring: set_sockopt_tpacket: rename to set_sockopt_tpacket_v2Daniel Borkmann3-3/+3
Rename it to set_sockopt_tpacket_v2 so that we later on can also add other versions and have it clearly stated which one we use. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-30ifpps: Allocate cpu dependent stats in one placeTobias Klauser1-15/+9
Avoid code duplication by allocating the stats arrays dependent on the number of CPUs in main() rather than screen_main() and term_main(). Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-05-30ring: remove fanout related bitsDaniel Borkmann1-20/+0
We currently do not support it, so do not keep it here. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-30man: manpages hyphen and spelling mistakesKartik Mistry7-48/+48
Some fixes all over, part 1. Signed-off-by: Kartik Mistry <kartik@debian.org> Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-30misc: Fixed spelling mistakesKartik Mistry3-6/+6
Fix for spelling mistakes detected by Lintian. Signed-off-by: Kartik Mistry <kartik@debian.org> Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-29conf: oui: run oui-update.py script over config fileDaniel Borkmann1-175/+519
Update oui entries. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-29docs: minor: fix whitespacing in copying fileDaniel Borkmann1-2/+2
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-29docs: move sponsor names into authorsDaniel Borkmann2-14/+7
We don't need to keep an extra file around, put this into the AUTHORS file under sponsor section. Also credit Team Cymru for providing an extra machine for us for ASN mappings. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-29make: add DISTRO=1 for compilation on distributionsDaniel Borkmann1-6/+9
For packaging, we cannot use -O3, -march etc, so have an option that allows for distribution build and does less tuning. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-29make: allow to append CFLAGS in addition to overwriteDaniel Borkmann1-19/+14
This is needed for distribution packaging purposes. Also remove the warning, because -I/-L paths for nacl could be defined via cmdline as well. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-29ifpps: fix segfault in terminal modeDaniel Borkmann1-0/+7
Introduced by commit 0e47d1d5011f ("ifpps: Don't assume a maximum of 32 CPUs"). Also update term_main with initial allocation of CPU data. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-29ifpps: Properly zero out allocated statsTobias Klauser1-1/+1
The dynamically allocated members of struct ifstat have an entry for each CPU. Properly consider this when resetting the stats in the STATS_ZERO1 macro. Reported-by: Daniel Borkmann <borkmann@iogearbox.net> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-05-29ifpps: support mq devices in /proc/interruptsDaniel Borkmann1-2/+7
/proc/interrupts can have such a structure ... 98: 35 0 2902361 PCI-MSI-X eth1-0 106: 61 11 3841 PCI-MSI-X eth1-1 114: 28 0 61452 PCI-MSI-X eth1-2 122: 24 1586 22 PCI-MSI-X eth1-3 130: 2912 0 337 PCI-MSI-X eth1-4 138: 21 0 28 PCI-MSI-X eth1-5 146: 21 0 56 PCI-MSI-X eth1-6 154: 34 1 1 PCI-MSI-X eth1-7 ... and will not count all IRQs for eth1-*. Thus change it to sum up multiple entries. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-29ifpps: also show total number of cpusDaniel Borkmann1-2/+2
Just a minor change to also show the total number of cpus in the headline. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-29ifpps: remove unused function snr_to_strDaniel Borkmann1-16/+0
It's not used anywhere anymore, so remove it. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-27ifpps: Use strtoul() to convert unsigned valueTobias Klauser1-1/+1
The refresh interval can only be positive and is stored in an uint64_t, so use strtoul() to convert it. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-05-27ifpps: minor: minor output formatting adaptionDaniel Borkmann1-2/+2
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-27man: ifpps: document ifpps behaviour when CPU > 10Daniel Borkmann1-0/+5
Document the behaviour of ifpps when we switch to heavy hitter mode. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-27ifpps: fix bug_on trigger when parsing irq numberDaniel Borkmann1-10/+18
When parsing irq numbers on e.g. 24 CPU machines, procfs lines can get very long, so our static temporary buffer size will fail here with: Assertion `!(stats->irq_nr == 0)' failed. So allocate it relative to the CPU number. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-27ifpps: beautify output with > 10 cpusDaniel Borkmann1-15/+26
I've tested it on a 24 CPU machine, and it does not look so nice if there's different padding along the lines. This patch fixes it. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-27ifpps: Add myself to the copyright holders in --version/--helpTobias Klauser1-0/+2
Add my name to the ouput of --version and --help. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-05-27ifpps: Don't assume a maximum of 32 CPUsTobias Klauser2-34/+158
There are people with machines containing far more than 32 CPUs. In their case ifpps didn't work until now because of a limitation to 32 CPUs. Rework ifpps to support an arbitrary number of CPUs. In order to still remain within the display space, if more than 10 (TOP_CPUS) CPUs are available, only the 10 top hitting (in terms of usr and sys time or irqs respectively) are displayed. Suggested-by: Daniel Borkmann <borkmann@iogearbox.net> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-05-27docs: readme: just shortly also mention JIT disassemblerDaniel Borkmann1-1/+1
Just shortly also mention JIT disassembler in conjunction with bpfc. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-27bpf: add minimal BPF JIT emitted image disassemblerDaniel Borkmann1-0/+207
This is a minimal stand-alone user space helper, that allows for debugging or verification of emitted BPF JIT images. This is in particular useful for emitted opcode debugging, since minor bugs in the JIT compiler can be fatal. The disassembler is architecture generic and uses libopcodes and libbfd. How to get to the disassembly, example: 1) `echo 2 > /proc/sys/net/core/bpf_jit_enable` 2) Load a BPF filter (e.g. `tcpdump -p -n -s 0 -i eth1 host 192.168.20.0/24`) 3) Run e.g. `bpf_jit_disasm -o` to disassemble the most recent JIT code output `bpf_jit_disasm -o` will display the related opcodes to a particular instruction as well. Example for x86_64: $./bpf_jit_disasm 94 bytes emitted from JIT compiler (pass:3, flen:9) ffffffffa0356000 + <x>: 0: push %rbp 1: mov %rsp,%rbp 4: sub $0x60,%rsp 8: mov %rbx,-0x8(%rbp) c: mov 0x68(%rdi),%r9d 10: sub 0x6c(%rdi),%r9d 14: mov 0xe0(%rdi),%r8 1b: mov $0xc,%esi 20: callq 0xffffffffe0d01b71 25: cmp $0x86dd,%eax 2a: jne 0x000000000000003d 2c: mov $0x14,%esi 31: callq 0xffffffffe0d01b8d 36: cmp $0x6,%eax [...] 5c: leaveq 5d: retq $ ./bpf_jit_disasm -o 94 bytes emitted from JIT compiler (pass:3, flen:9) ffffffffa0356000 + <x>: 0: push %rbp 55 1: mov %rsp,%rbp 48 89 e5 4: sub $0x60,%rsp 48 83 ec 60 8: mov %rbx,-0x8(%rbp) 48 89 5d f8 c: mov 0x68(%rdi),%r9d 44 8b 4f 68 10: sub 0x6c(%rdi),%r9d 44 2b 4f 6c [...] 5c: leaveq c9 5d: retq c3 Note that this is also part of the Linux kernel source tree under tools/net/. We also keep a copy of it here, since it is quite useful in conjunction with bpfc for debugging purposes. However, we do not integrate this small helper into the main build process. People who care to have this need to compile it on their own which is not a big deal. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-27man: mausezahn: initial formatting and fixupsDaniel Borkmann1-295/+304
Format larger text sections into subsections, include .PPs and other fixups. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-27man: minor: trafgen: add .PPs and modify BUGS sectionDaniel Borkmann1-81/+82
Minor change in BUGS section to bring it up to date. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-27man: minor: flowtop: add .PPsDaniel Borkmann1-34/+34
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-27man: minor: astraceroute: add .PPsDaniel Borkmann1-49/+49
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-26man: netsniff-ng: Reword a few sentencesTobias Klauser1-14/+13
Make the 2nd section of the description a bit easier to read by splitting and rearranging sentences. Also add a few missing punctuations or make it more consistent repectively. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-05-26mausezahn: show long version on cliDaniel Borkmann1-1/+1
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-26make: minor cleanups in MakefileDaniel Borkmann1-6/+14
Remove some unneeded stuff, and move other things around. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-26man: netsniff-ng: add note about multithreadingDaniel Borkmann1-0/+9
Add a paragraph about multi-threading with netsniff-ng. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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