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2015-10-29ring: Simplify calculation of number of frames in a tpacket ringTobias Klauser1-4/+1
The number of frames in a tpacket ring (ring->layout.tp_frame_nr) is currently calculated as: tp_frame_nr = tp_block_size / tp_frame_size * tp_block_nr Substituting tp_block_nr with 'size / tp_block_size' (as calculated in the line above), we get: tp_frame_nr = tp_block_size / tp_frame_size * (size / tp_block_size) and realize that we can omit tp_block_size as it cancels out, leading to: tp_frame_nr = 1 / tp_frame_size * (size / 1) = size / tp_frame_size Adjust the calculation in setup_ring_layout_generic() accordingly. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-29ring: Move generic code for ring layout setup to own functionTobias Klauser4-29/+28
Initialization of the ring->layout members is the same for RX and TX rings. Instead of duplicating the code in setup_rx_ring_layout() and setup_tx_ring_layout(), create a new function setup_ring_layout_generic() which is called from the former two. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-29zsh: flowtop: Add completion for newly added command line optionsTobias Klauser1-0/+4
Update the zsh completion with option -n/--no-dns, -G/--no-geoip, -b/--bits, -t/--interval. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-29flowtop: Fix missing --no-geoip option in usage outputVadim Kochan1-0/+1
Add G,--no-geoip to the usage output. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-28all: Change reporting bugs emailVadim Kochan7-8/+8
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>
2015-10-28flowtop: Add command-line option to show rates in bitsVadim Kochan2-5/+27
Add -b,--bits command line option to show rates in bits/s instead of bytes/s. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-27flowtop: Use strlcpy instead of memcpy to copy stringsTobias Klauser1-14/+10
Make sure we always terminate the strings with '\0'. Also only set the first byte to '\0' instead of memset()ing the entire buffer in case no city/country is returned. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-27flowtop: Use bool for show_src optionTobias Klauser1-3/+4
Use boolean false/true for show_src option value. This makes the handling of on/off parameters more consistent. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-27flowtop: Add command-line option to disable GeoIP lookupVadim Kochan2-5/+18
Add option -G,--no-geoip which allows to disable GeoIP lookup. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> [tk: Minor wording tweaks] Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-27flowtop: Add command-line option to disable hostname lookupVadim Kochan2-2/+30
Add option -n,--no-dns which allows to disable hostname lookup. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> [tk: Minor wording tweaks] Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-27flowtop: Fix src hostname showed with garbageVadim Kochan1-6/+3
Use strlcpy to copy resolved src/dst hostname. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> [tk: Remove superflous min() for size argument] Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-26flowtop: Fix short form unit of kilobytes from KB to kBTobias Klauser1-2/+2
The SI prefix for 1000 is 'k', not 'K' (which is used for 1024 bytes by some). Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-26flowtop: Add option for flow refresh intervalVadim Kochan2-4/+18
Add new -t,--interval option to specify flow refresh interval in seconds. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> [tk: Fix type conversion on rate calculation] Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-26flowtop: man: Add notice about rate infoVadim Kochan1-0/+2
Add notice about rate info to the feature list. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-26flowtop: Change traffic amount unit namesVadim Kochan1-8/+8
Use GB/MB/KB for traffic rate & accounting. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-23flowtop: Constify pointer function parametersTobias Klauser1-12/+12
Constify pointers struct flow_entry and struct nf_conntrack where possible. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-23flowtop: Store basename of cmdline in struct flow_entryTobias Klauser1-5/+8
The cmdline entry of struct flow_entry is only used to display the process name using basename() in presenter_screen_do_line(). Instead of calling basename() everytime just call it once when we read the cmdline proc entry and store the basename in struct flow_entry. Also rename the struct member accordingly. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-23flowtop: Show flow rate of bytes & packetsVadim Kochan1-6/+75
Calculate and display the rate of src/dst bytes and packets. Also change the refresh time for the flows to 1s so the rate info will not disappear too quickly. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-20pkt_buff: Remove unused size member from struct pkt_buffTobias Klauser1-5/+3
The size member of struct pkt_buff is set but never accessed. It can savely be dropped as we can still get the size implicitly using pkt->tail - pkt->head if necessary. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-19netsniff-ng: nlmsg: Display raw data if family is unknownTobias Klauser1-0/+12
Currently we only support full dissection of RTNL netlink messages. For non-RTNL message we only print the header and omit the data. Change this behavior and print a full ascii/hex dump of the remaining data (like it is done in dissector_entry_point() for trailing data after all known protocols have been processed) to give the user a chance to still inspect the message content. Reported-by: Geoff Ladwig <gladwig@verdantnetworks.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-19netsniff-ng: proto: Make raw hex/ascii print function globally availableTobias Klauser2-2/+4
Allow other dissectors to access the hex/ascii printing functions with a raw uint8_t* instead of only through struct pkt_buff. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-19netsniff-ng: nlmsg: Display "(none)" instead of "()" for zero flagsTobias Klauser1-2/+3
nl_nlmsg_flags2str() returns an empty string if the provided flags argument is 0. Check this condition and display "none" instead to make the output nicer to read. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-17netsniff-ng: Fix print stats in silent modeVadim Kochan1-6/+3
RX stats were not printed because of wrong check on PRINT_NONE. Fixes: 5f94671f31c040f ("netsniff-ng: Show total rx stats for multi pcap mode") 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 Klauser3-8/+8
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>
2015-10-14csum: Remove unnecessary memset in p4_csum()Tobias Klauser1-4/+3
No need to memset the IPv4 pseudo header to 0 as all its members will explicitly be set. Also reorder the setting of the pseudo header to match the order of the fields. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-13trafgen: Change signature of compile_packets() to match provided typesTobias Klauser2-2/+2
Match two arguments to the respective types provided in its only caller in trafgen.c:main_loop() Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-13trafgen: Don't panic() on parser errorsTobias Klauser2-10/+19
If the C preprocessor is used to parse the packet description, a temporary file is created which is not deleted if an error occurs during parsing in compile_packets(). Instead, don't panic() on errors and only print a message, and only die() once we cleaned up after us. 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>
2015-10-13conf: oui: update oui.confTobias Klauser1-1755/+2390
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-13oui-update: Explicitly sort OUI list and strip trailing whitespacesTobias Klauser1-5/+9
It looks like http://standards-oui.ieee.org/oui.txt is no longer sorted by OUI, so do in manually when creating oui.conf. Also, it looks like the file has been converted to use CRLF line endings, so strip those as well (and any other trailing whitespaces in the vendor name). Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-10-13trafgen: Add checksum helpers for TCP/UDP over IPv6Tobias Klauser7-6/+71
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>
2015-10-13trafgen: Adjust syntax error messageTobias Klauser1-1/+1
Make it more readable. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-09-24man: Correct some typos found using codespellTobias Klauser2-3/+3
s/auxillary/auxiliary/ s/noone/no one/ s/todays/today's/ Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-09-24all: Fix some typos in comments and printed stringsTobias Klauser4-4/+4
All found using codespell. s/addres/address/ s/noone/no one/ s/endianess/endianness/ s/Successfull/Successful/ Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-09-15netsniff-ng: nlmsg: mmaped packet checkKen-ichirou MATSUZAWA1-2/+13
The size of mmaped netlink packet is equals to its frame size, so may be different from actual size. It can be checked by the next nlmsg len is 0 or not, and trim it in that case. Signed-off-by: Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-09-15netsniff-ng: nlmsg: update pull sizeKen-ichirou MATSUZAWA1-4/+4
It would be better to use NLMSG_HDRLEN instead of sizeof(*hdr) and not to use NLMSG_PAYLOAD to get payload length, I think. Signed-off-by: Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-09-10dissector: make netlink directions a bit more readableDaniel Borkmann1-2/+2
Display them as K->U resp. U->K. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2015-09-07curvetun: Don't attempt to close negative file descriptorTobias Klauser1-1/+1
Complete fix for Coverity issue CID 991822, commit 047d69c4e ("curvetun: Fix issues detected by the Coverity scanner") only fixed one instance of this issue. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-09-07curvetun: Fix issues detected by the Coverity scannerTobias Klauser2-5/+12
Fix two issues detected by the Coverity scanner (CID 991819 & CID 991822) Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-09-07flowtop: Don't attempt to set sysctl values if initial read failsTobias Klauser1-0/+2
Bail out early if we fail to read the current sysctl variable values for net/netfilter/nf_conntrack_acct and net/netfilter/nf_conntrack_timestamp Otherwise we'll not be able restore the previous value on exit/panic. Moreover, if we fail to read the sysctl file, we usually also lack the permissions to write it. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-09-04flowtop: man: Fix small typo of timestampinfVadim Kochan1-1/+1
Fix typo timestampinf -> timestamping Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-09-03flowtop: man: Add notes about flow duration timeVadim Kochan1-0/+11
Add short info about timestamping enabling & connection duration time feature. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> [tklauser: Minor rewordings] Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-09-03flowtop: Enable flow timestamp on startVadim Kochan1-9/+36
Allow setting start/stop timestamp for new flows by enabling: /proc/sys/net/netfilter/nf_conntrack_timestamp on start and resetting it on exit or panic. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> [tklauser: Remove unnecessary cast of void pointer] Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-09-03flowtop: Show flow time durationTobias Klauser1-0/+33
Show flow time duration in human readable form. Originally submitted by Vadim in a slightly different form. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-08-25doc: Rename BUILD to README.devel and add information about CoverityTobias Klauser2-4/+12
Don't spread the information over too many documents, this is a first step to consolidate them a bit. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-08-25netsniff-ng: Show total rx stats for multi pcap modeVadim Kochan3-66/+77
Allow to collect rx stats for multiple pcap mode, by storing them in separated variables before switch to the next pcap file. It allows to have the one approach when dump for single or multiple pcap(s) mode. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-08-24netsniff-ng: Use correct flag to check tpacket uhdr validityTobias Klauser1-4/+3
When fixing up a build error introduced by commit 579e8524 ("netsniff-ng: vlan: Show vlan info from tpacket v3"), the used definitions got mixed up and TP_STATUS_VLAN_TPID_VALID ended up not being checked at all. Fix this up and make the code a bit easier to read Fixes: 3384ee71 ("netsniff-ng: ring: Fix build if tp_vlan_tpid is not available in kernel header") Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-08-19build: Only use tput if $TERM is definedTobias Klauser1-2/+7
Otherwise we clutter the build log with warnings such as: tput: No value for $TERM and no -T specified on head-less CI/build systems (e.g. Debian's buildd). Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-08-19build: Don't strip generated binariesTobias Klauser3-17/+0
Except for some minor saving in disk space, stripping the binaries doesn't bring any benefits and it might prevent us from getting usable debugging information even from binaries build with DEBUG not set. Most distributions will strip the binaries as part of their packaging process anyhow. If someone really wants stripped binaries as a result of the netsniff-ng build, they could still add '-s' to CFLAGS or call strip manually. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-08-19netsniff-ng: proto_ipv4: Fix typo in commentTobias Klauser1-1/+1
s/coul/could/ Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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