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2016-01-05trafgen: Add option to specify packets sending rateVadim Kochan1-9/+131
Added -b,--rate option in units of: pps/B/kB/MB/kBit/Mbit/Gbit/KiB/MiB/GiB to specify rate at which packets will be sent. Similarly to -t,--gap option the packets will be sent in slow mode with 1 CPU. Tested with ifpps. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-12-17trafgen: Added option to pass macro/define for C preprocessorVadim Kochan1-4/+15
Add -D,--define option which allows to pass multiple macro/defines which can be used in trafgen script (e.g. by #ifdef ). Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-11-24trafgen: Preprocess packets directly after compilingTobias Klauser1-4/+2
No need to duplicate the call to preprocess_packets(), just call it directly after compile_packets()/compile_packets_str(). Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-11-24trafgen: Fix error message if no packet configuration is givenTobias Klauser1-1/+1
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-11-09csum: Remove unused parameter from calc_csum()Tobias Klauser1-1/+1
The `ccsum' parameter to calc_csum() is never used and is set to 0 by all callers. There's no reason to keep it, so remove it. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-11-09trafgen: Allow to build packet from command lineVadim Kochan1-5/+18
Craft packet directly from command line with same syntax as for conf file. It might be as first step to extend current syntax with specific proto fields. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-11-07trafgen, minor: newline in help textDaniel Borkmann1-1/+1
Just add a newline before notes. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2015-11-05trafgen: let the kernel check min/max transm. unit boundariesDaniel Borkmann1-10/+2
Let AF_PACKET do this job to fail in case boundaries are too small or too large. I found it quite useful for testing the kernel. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2015-11-05trafgen: Fix typo in error messageTobias Klauser1-1/+1
Spell out "resolve" properly. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-11-02trafgen: Pre-calculate checksums if possibleTobias Klauser1-0/+19
The TCP/UDP checksums cannot be calculated in the parser as the packet payload following the TCP/UDP header is not yet know. However, we can calculate these checksums before the send loop if the only dynamic elements of the packet are checksums. This change avoids the overhead of recalculating the checksums for every iteration the send loop in these cases. Suggested-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-28all: Change reporting bugs emailVadim Kochan1-1/+1
Replace bugs@netsniff-ng.com with netsniff-ng@googlegroups.com which is used in REPORTING-BUGS file. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-14trafgen: Move checking of dynamic packet elements to headerTobias Klauser1-2/+2
Move has_dynamic_elems() to to trafgen_conf.h, rename it to packet_dyn_has_elems() and use it to check whether dynamic packet elements are present. Also change the return type to bool and use || instead of + to potentially make use of short-circuit evaluation. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-13trafgen: Make xmit_packet_precheck() return voidTobias Klauser1-6/+3
The return value of xmit_packet_precheck() is always 0 and it calls panic() in any error cases, so its return value isn't of any use. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-13trafgen: Add checksum helpers for TCP/UDP over IPv6Tobias Klauser1-0/+12
Add the csumudp6 and csumtcp6 helper functions in order to simplify checksum generation for TCP/UDP packets sent over IPv6. trafgen example for TCP over IPv6: { /* MAC Destination */ fill(0xff, 6), /* MAC Source */ 0x00, 0x02, 0xb3, drnd(3), /* IPv6 Protocol */ c16(0x86DD), /* Version, Traffic Class, Flow Label */ 0b01100000, c8(0), c16(0), /* Payload Length */ c16(54), /* Next Header (TCP) */ c8(6), /* Hop Limit */ c8(64), /* Source IPv6 */ 0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xba, 0xac, 0x6f, 0xff, 0xfe, 0xa4, 0x12, 0xe3, /* Destination IPv6 */ 0xfe, 0x80, 0x82, 0x2e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xde, 0xff, 0xfe, 0x00, 0x06, 0xde, /* TCP Source Port */ c16(55042), /* TCP Destination Port */ c16(55043), /* TCP Sequence Number */ drnd(4), /* TCP Ackn. Number */ c32(0), /* TCP Header length + TCP SYN/ECN Flag */ c16((8 << 12) | (1 << 1) | (1 << 6)) /* Window Size */ c16(16), /* TCP Checksum (offset IPv6, offset TCP) */ csumtcp6(14, 54), /* TCP Options */ 0x00, 0x00, 0x01, 0x01, 0x08, 0x0a, 0x06, 0x91, 0x68, 0x7d, 0x06, 0x91, 0x68, 0x6f, /* Data blob */ "foobar!", } Suggested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-06-30trafgen: Print min packet size in error messageVadim Kochan1-3/+6
Print minimum needed packet size in case if validation error. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-05-06sock: Fix capturing extra packets from other devVadim Kochan1-1/+1
Create PF_PACKET socket with proto=0 which does not setup packet handler and will not capture packets until bind() will be invoked. Also replaced pf_tx_socket by pf_socket as these funcs became the same, as proto arg is set to 0. Suggested-by: Daniel Borkmann <borkmann@iogearbox.net> Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-05-05die: Rename *_panic_func to *_panic_handlerVadim Kochan1-1/+1
Rename xxx_panic_func(s) to xxx_panic_handler(s) which is more understandable than 'func'. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-05-04trafgen: Delete rfmon mac80211 device on panicVadim Kochan1-0/+6
Fixed case when rfmon mac80211 created device remains after trafgen failed (for ex. - incorrect cfg file), so just delete it when panic occured. Also made panic handlers invoking per process and only once. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-03-31trafgen: Alloc cpus according to specified number of packetsVadim Kochan1-0/+8
Trafgen uses all the online CPUs even if the number of packets specified by -n is less than the number of selected CPUs. Such behaviour leads to issues: - trafgen re-calculates number of packets per CPU which leads to rounding it to 0 then no packets will be sent. - trafgen might send more packets than specified by -n because of using all the online cpus. Fixed by taking min(#CPUs, #packets) as the number of CPUs if a number of packets is specified by -n. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> [tklauser: moved code and added explanatory comment] Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-03-31trafgen: Remove note about trafgen.txf example from help textTobias Klauser1-1/+2
We no longer ship example trafgen config files. Instead, mention the netsniff-ng conversion facility. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-01-30trafgen: disable timer slackEric Dumazet1-0/+2
linux has default time slack of 50 usec, which means that trafgen 'gap' option is unable to precisely control delays. Set the process timer slack to the minimum of 1 nsec. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2014-12-12all: Reduce amount of empty liens in usage and version output a bitTobias Klauser1-5/+5
No need for some of the empty lines, remove them to make the output a bit denser. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-09-05trafgen: Don't duplicate copyright/bug report/license stringTobias Klauser1-14/+11
Move the copyright/bug report/license string to an own constant and use it for the output of help() and version() to avoid duplication and prevent the strings from getting out of sync. This makes the text section of trafgen.o slightly smaller: before: text data bss dec hex filename 18512 0 104 18616 48b8 trafgen/trafgen.o after: text data bss dec hex filename 18240 0 104 18344 47a8 trafgen/trafgen.o Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-09-05trafgen: Consistently use unsigned int for number of CPUsTobias Klauser1-9/+9
The number of CPUs is stored in ctx.cpus which is unsigned int, so use unsigned int consistently when using CPU number. Negative CPU numbers wont occur anyhow. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-09-01trafgen: Replace variable length arraysTobias Klauser1-6/+9
Use zmalloc()'ed buffer or statically sized array to replace usage of variable sized arrays. Found by the sparse static checker. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-08-21trafgen: minor fix to help text for option "--no-sock-mem"Jesper Dangaard Brouer1-1/+1
Pushed last commit a bit too fast. The help text described that the single letter option for "--no-sock-mem" were "-m", which is wrong the right option is "-A" (only help txt, correct in the code and manual). Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
2014-08-21trafgen: add option to not adjust system socket mem during testrunJesper Dangaard Brouer1-3/+10
The default behavior of trafgen is to boost the systems default socket memory limits during a testrun. This behaviour does not always result in improved performance, because this will stress the kernels SLAB allocators unnecessary. Introducing an option "--no-sock-mem" that instruct trafgen to not perform any socket memory adjustments. Fixes: #130 Acked-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
2014-05-09ring: Merge common ring_{rx,tx} initialization into own functionTobias Klauser1-11/+2
Instead of having to perform the individual steps to initialize a ring and open coding them in multiple places, provide convenience functions to do all at once. This has the nice side effect of allowing to make most of these *_{rx,tx}_ring() functions static in their respective module. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-05-09trafgen: Remove unnecessary initialization of ct.reserve_sizeTobias Klauser1-1/+0
It will be set later on depending on command line option (or panic() out) and it is initialized to 0 by a memset() before anyways. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-04-30ring: Consistently use size_t to specify ring sizeTobias Klauser1-2/+4
The mm_len member of struct ring is of type size_t, but in the code paths leading to set it, unsigned int is used. In circumstances where unsigned int is 32 bit and size_t is 64 bit, this could lead to an integer overflow, which causes an improper ring size being mmap()'ed in mmap_ring_generic(). In order to prevent this, consistently use size_t to store the ring size, since this is also what mmap() takes as its `length' parameter. This now allows to specify ring sizes larger than 4 GiB for both netsniff-ng and trafgen (fixes #90). Reported-by: Jon Schipp <jonschipp@gmail.com> Reported-by: Michał Purzyński <michalpurzynski1@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-04-30trafgen: Don't expose -k/--kernel-pull anymore and warn if it still usedTobias Klauser1-3/+3
The -k/--kernel-pull option got useless with commit c139e80 ("trafgen: remove timer-based trigger model"). Instead of entirely removing it and thus possibly breaking people's scripts, still accept it as an option, but warn the user about it. We might want to remove the option in a future release. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-04-30trafgen: Use strtoul() instead of strtol() for unsigned longTobias Klauser1-1/+1
If setting an unsigned long variable, use strtoul() instead of strtol(). Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-04-27trafgen: performance regression at 10G due to smaller ring buffer sizeJesper Dangaard Brouer1-1/+1
commit c10621e ("trafgen: keep a small initial ring buffer size to reduce cache-misses") reduced default ring buffer size to 196KiB, but on my big machines with 10Gbit/s this size is too small. Increase default ring-size to 512 KiB, yield the best results, without increasing ring buffer size too much, this fixes #120. Single CPU results from my E5-2630 CPU with intel ixgbe/82599. (Cmd: trafgen --cpp --dev eth8 --conf udp_example01.trafgen --cpu 1) * 769,440 pkts/sec -- default ring-size 196 KiB * 1,417,908 pkts/sec -- ring-size 500 KiB Going above CPUs L3 cache size which is (15Mb) * 1,236,580 pkts/sec -- ring-size 20000KiB The mmap'ed ring buffer is now faster than using sendto(). For comparison, not using the ring-buffer, by using option "-t0": * 1,381,364 (with qdisc bypass) And using the qdisc code path in the kernel (enable via parameter "--qdisc-path") * 1,227,772 pkts/sec (with --qdisc-path) Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
2014-03-26trafgen: keep a small initial ring buffer size to reduce cache-missesDaniel Borkmann1-0/+3
Heavily reduce the initial ring buffer size for trafgen to just 196KiB, so that we can heavily reduce the number of cache-misses related to cache references. People can still overwrite this setting later on via command line option for their specific architecture if they wish. Perhaps the RX_RING should be checked as well in netsniff-ng though the use case there is slightly different. Before: Performance counter stats for 'trafgen -i blub -o dummy0 -n100000000': 137,765,493,346 instructions:k # 0.82 insns per cycle 167,438,826,578 cycles:k # 0.000 GHz 59,508,315 branch-misses:k 361 context-switches:k 6 cpu-migrations:k 134,751,541 cache-misses:k # 85.019 % of all cache refs 158,495,358 cache-references:k 755 kmem:kmem_cache_alloc 15.139458202 seconds time elapsed After: Performance counter stats for 'trafgen -i blub -o dummy0 -n100000000': 137,889,782,650 instructions:k # 0.92 insns per cycle 150,239,185,971 cycles:k # 0.000 GHz 71,583,573 branch-misses:k 423 context-switches:k 7 cpu-migrations:k 60,239 cache-misses:k # 0.073 % of all cache refs 82,502,468 cache-references:k 740 kmem:kmem_cache_alloc 12.028787964 seconds time elapsed Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2014-03-26trafgen: remove timer-based trigger modelDaniel Borkmann1-43/+10
perf reports in mmap case a huge number of kmem_cache_alloc's which seem to stem from triggering signals from kernel to user application, against dummy device: Performance counter stats for 'trafgen -i blub -o dummy0 -n100000000 -k100': <-- mmap case 175,837 kmem:kmem_cache_alloc 14.758900522 seconds time elapsed Performance counter stats for 'trafgen -i blub -o dummy0 -n100000000 -k100 -t0': <-- non-mmap case 707 kmem:kmem_cache_alloc 15.591667364 seconds time elapsed It seems not to case significant number of cache-misses, but it's better to switch to a direct trigger when we cannot fill new frames anymore. After this patch, we see a similar number of kmem_cache_alloc's as in the non-mmap case. This basically renders the kpull interval useless, we can optionally remove it if we don't care about people's scripts. ;-) Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2014-02-22trafgen: Exit gracefully for all possible termination signalsTobias Klauser1-0/+4
Handle all termination signals that we're allowed to handle (SIGKILL can't be handled) in order to exit gracefully in any regular termination case. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-02-02trafgen: Don't modify optarg/argvTobias Klauser1-1/+0
Follow commit bed9b6bb ("netsniff-ng: Don't modify optarg/argv"). We shouldn't modify optarg (and thus argv) since it's e.g. used to display the commandline string in `ps'. Since strtoul() reads until it encounters the first non-numeric character and ignores the rest, we can just revert from setting a NULL byte after the numeric part of the string. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-12-12trafgen: take advantage of PACKET_QDISC_BYPASS sock optionJesper Dangaard Brouer1-2/+11
Since Linux 3.14, the kernel supports a socket option PACKET_QDISC_BYPASS, which trafgen enables by default. That allow us to bypass the kernels normal qdisc (traffic control) layer. An option -q, --qdisc-path is added to allow enabling the qdisc path explicity, useful for testing purposes. This will be avail in kernels >= 3.14 via commit d346a3fae3 (packet: introduce PACKET_QDISC_BYPASS socket option). Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
2013-12-11trafgen: speedup TX only path by avoiding kernel packet_rcv() callJesper Dangaard Brouer1-1/+1
The tool trafgen is used in a pktgen style transmit only scenario. We discovered a performance bottleneck in the kernel, when running trafgen, where the kernel stalled on a lock in packet_rcv(). This call is unnecessary for trafgen given its transmit only nature. This packet_rcv() call can, easily be avoided by instructing the RAW/PF_PACKET socket, to not listen to any protocols (by passing protocol argument zero, when creating the socket). The performance gain is huge, increasing performance from approx max 2Mpps to 12Mpps, basically causing trafgen to scale with the number of CPUs. Following tests were run on a 2xCPU E5-2650 with Intel 10Gbit/s ixgbe: Trafgen using sendto() syscall via parameter -t0: * # CPUs -- *with* -- *without* packet_rcv() call * 1 CPU == 1,232,244 -- 1,236,144 pkts/sec * 2 CPUs == 1,592,720 -- 2,593,620 pkts/sec * 3 CPUs == 1,635,623 -- 3,692,216 pkts/sec * 4 CPUs == 1,567,768 -- 4,102,866 pkts/sec * 5 CPUs == 1,700,270 -- 5,151,489 pkts/sec * 6 CPUs == 1,762,392 -- 6,124,512 pkts/sec * 7 CPUs == 1,850,139 -- 7,120,496 pkts/sec * 8 CPUs == 1,770,909 -- 8,058,710 pkts/sec * 9 CPUs == 1,721,072 -- 8,963,192 pkts/sec * 10 CPUs == 1,359,157 -- 9,584,535 pkts/sec * 11 CPUs == 1,175,520 -- 10,498,038 pkts/sec * 12 CPUs == 1,075,867 -- 11,189,292 pkts/sec * 13 CPUs == 1,012,602 -- 12,048,836 pkts/sec * [...] * 20 CPUs == 1,030,446 -- 11,202,449 pkts/sec Trafgen using mmap() TX tpacket_v2 (default) * # CPUs -- *with* -- *without* packet_rcv() call * 1 CPU == 920,682 -- 927,984 pkts/sec * 2 CPUs == 1,607,940 -- 2,061,406 pkts/sec * 3 CPUs == 1,668,488 -- 2,979,463 pkts/sec * 4 CPUs == 1,423,066 -- 3,169,565 pkts/sec * 5 CPUs == 1,507,708 -- 3,910,756 pkts/sec * 6 CPUs == 1,555,616 -- 4,625,844 pkts/sec * 7 CPUs == 1,560,961 -- 5,298,441 pkts/sec * 8 CPUs == 1,596,092 -- 6,000,465 pkts/sec * 9 CPUs == 1,575,139 -- 6,722,130 pkts/sec * 10 CPUs == 1,311,676 -- 7,114,202 pkts/sec * 11 CPUs == 1,157,650 -- 7,859,399 pkts/sec * 12 CPUs == 1,060,366 -- 8,491,004 pkts/sec * 13 CPUs == 1,012,956 -- 9,269,761 pkts/sec * [...] * 20 CPUs == 955,716 -- 8,653,947 pkts/sec It is fairly strange that the mmap() version runs slower than the sendto() version. This is likely another performance problem related to mmap() which seems worth fixing. Note, that the mmap() version speed can be improved by reducing the default --ring-size to around 1-2 MiB. But this does not fix general trend with mmap() performance. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
2013-11-25trafgen: inherit netsniff-ng's -H -Q optionsDaniel Borkmann1-3/+21
Also make these options available to trafgen. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-11-18trafgen: don't bother about device going down, just continue sendingDaniel Borkmann1-2/+2
If we loose carrier, don't bother about panic'ing, but continue sending! Only exit in case we're doing a smoke test. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-10-15trafgen: set interpacket gap in time units (s/ms/us/ns)Jon Schipp1-11/+39
Add ability to set IGP in time units in seconds, milliseconds, microseconds, and nanoseconds by appending a postfix to --gap e.g. --gap 100ms. Also, update the man page and trafgen.zsh to reflect the changes. [Fix whitespaces, coding style and minor wording changes -- tklauser] Signed-off-by: Jon Schipp <jonschipp@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-09-23trafgen: remove inner loopDaniel Borkmann1-31/+31
Get rid of inner loop in fast path. This simplifies code and readability. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-09-12trafgen: combine likely conditionsDaniel Borkmann1-2/+2
Combine multiple likely conditions into one. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-08-12trafgen: Fix compiler warningsTobias Klauser1-17/+21
Fix the following compiler warnings that occur when building with "-W -Wall -Wextra": trafgen.c: In function ‘timer_elapsed’: trafgen.c:136:31: warning: unused parameter ‘number’ [-Wunused-parameter] trafgen.c: In function ‘apply_csum16’: trafgen.c:346:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] trafgen.c: In function ‘dump_trafgen_snippet’: trafgen.c:415:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] trafgen.c: In function ‘xmit_smoke_probe’: trafgen.c:490:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] trafgen.c:506:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] trafgen.c:509:56: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] trafgen.c:512:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] trafgen.c: In function ‘__wait_and_sum_others’: trafgen.c:721:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] trafgen.c: In function ‘__correct_global_delta’: trafgen.c:743:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] trafgen.c:761:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] trafgen.c: In function ‘xmit_packet_precheck’: trafgen.c:797:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] trafgen.c:816:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] trafgen.c: In function ‘main_loop’: trafgen.c:837:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] trafgen.c: In function ‘main’: trafgen.c:1047:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] trafgen.c:1065:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] trafgen.c:1078:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] trafgen.c:1090:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-08-09mac80211.c: Remove or mark unused function parametersTobias Klauser1-1/+1
Compiling with "-W -Wall -Wextra" reveals the following warnings in mac80211.c: mac80211.c: In function ‘nl80211_init’: mac80211.c:78:67: warning: unused parameter ‘device’ [-Wunused-parameter] mac80211.c: In function ‘nl80211_wait_handler’: mac80211.c:106:48: warning: unused parameter ‘msg’ [-Wunused-parameter] mac80211.c: In function ‘nl80211_error_handler’: mac80211.c:115:54: warning: unused parameter ‘nla’ [-Wunused-parameter] mac80211.c:117:12: warning: unused parameter ‘arg’ [-Wunused-parameter] mac80211.c: In function ‘nl80211_del_mon_if’: mac80211.c:181:72: warning: unused parameter ‘device’ [-Wunused-parameter] Fix them by either marking them as unused (where we need to conform to library APIs or remove them alltogether (for our own APIs). For the function leave_rfmon_mac80211() the according users (netsniff-ng and trafgen) are also changed. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-08-02trafgen: Remove unused local variable in apply_*() functions.Tobias Klauser1-25/+22
The variable `i' in apply_counter(), apply_randomizer() and apply_csum16() is only set once, so use the original parameter `counter_id' instead. Rename `counter_id' to `id' in order to keep it short. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2013-07-13trafgen: switch for skipping cpu time statistics on exitDaniel Borkmann1-3/+8
For systems with >8 CPUs it might be i) annoying or ii) uninteresting to print CPU time statistics. So introduce a switch that can skip this at exit. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-07-13sparse: netsniff-ng, trafgen: fix remaining time(0) warningsDaniel Borkmann1-1/+1
Those are the last occurences of warnings like: netsniff-ng.c:697:48: warning: Using plain integer as NULL pointer netsniff-ng.c:726:48: warning: Using plain integer as NULL pointer ... Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-07-13trafgen: setup_shared_var: fix reamaindersDaniel Borkmann1-4/+3
Commit bf9232fb6 ("trafgen: setup_shared_var: fix couple of things") forgot to amend the remaining changes in 'len' usage. So lets fix them right now. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
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