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2015-10-29ring: Move generic code for ring layout setup to own functionTobias Klauser1-0/+3
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>
2015-08-24netsniff-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>
2015-08-17netsniff-ng: ring: Fix build if tp_vlan_tpid is not available in kernel headerTobias Klauser1-2/+8
The tp_vlan_tpid member of struct tpacket_auxdata was only added in kernel commit a0cdfcf39362 ("packet: deliver VLAN TPID to userspace"). Support building netsniff-ng also against kernel headers from earlier versions. Fixes: 579e8524 ("netsniff-ng: vlan: Show vlan info from tpacket v3") Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-08-17netsniff-ng: vlan: Show vlan info from tpacket v3Vadim Kochan1-0/+24
Show vlan info (vid, prio & proto) from tpacket struct, in separated line. It might be useful to sniff it in case if vlan reordering is on (which is by default) and physical (vlan underlying) device supports vlan offloading. Meanwhile it uses only v3 tpacket info as location of vlan fields are different between v2 & v3 (v1 does not have it at all), but current code only has possibility to check if v3 is used which is not enough. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> [ tk: make print format consistent with VLAN dissector ] Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-04-21ring: Make ifname paramter to ring_size() constTobias Klauser1-1/+1
ifname not changed inside the function, so make it const. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-08-15netsniff-ng: Conditionally define POLLRDNORM where it is usedTobias Klauser1-0/+4
Instead of defining POLLRDNORM in built_in.h if it isn't provided by system/kernel headers, define it in ring.h where its only user is. This way we make sure that <poll.h> is included before checking #ifndef POLLRDNORM. This fixes the following sparse warning: /usr/include/bits/poll.h:32:10: warning: preprocessor token POLLRDNORM redefined built_in.h:378:10: this was the original definition Also remove the defines for POLLWRNORM and POLLRDHUP which are not used anywhere in the code. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-08-14netsniff-ng: Protect all access to tpacket v3 structs and constants (this ↵Tobias Klauser1-0/+4
time for real) Commit 0fab564a98d1 ("netsniff-ng: Properly wrap usage of all tpacket v3 structs") took care of protecting _some_ tpacket v3 structures with compile error when building with !HAVE_TPACKET3 (reported by Mike Reeves): > CC ring_rx.c > ring_rx.c: In function 'setup_rx_ring_layout': > ring_rx.c:124: warning: implicit declaration of function 'set_sockopt_tpacket_v3' > ring_rx.c: In function 'sock_rx_net_stats': > ring_rx.c:194: error: field 'k3' has incomplete type > make: *** [netsniff-ng/ring_rx.o] Error 1 Many thanks to Mike for helping me sort out these problems. Reported-by: Mike Reeves <luke@geekempire.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-08-14netsniff-ng: Restore tpacket v2 capturingTobias Klauser1-2/+10
Some older systems (e.g. RHEL 6) don't have tpacket v3 available, but only tpacket v2. However, since commit d8cdc6a ("ring: netsniff-ng: migrate capture only to TPACKET_V3") we solely rely on tpacket v3 for capturing packets. This patch restores the possibility to capture using tpacket v2. For now this is just a fallback if the configure script doesn't detect tpacket v3 (and thus HAVE_TPACKET3 isn't set). Thus, on most modern systems this shouldn't change anything and they will continue using tpacket v3. For now this fix contains quite a bit of ugly #ifdefery which should be cleaned up in the future. Fixes #76 Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2014-04-30ring: Consistently use size_t to specify ring sizeTobias Klauser1-1/+1
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>
2014-04-12built_in: changed to use RUNTIME_PAGE_SIZE instead of PAGE_SIZEChristian Wiese1-1/+1
References: https://github.com/netsniff-ng/netsniff-ng/commit/453f6eb9d79dd5aa2812ef956b22723f0a493086 https://github.com/netsniff-ng/netsniff-ng/pull/112 Signed-off-by: Christian Wiese <chris@opensde.org> Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2014-04-10poll: changed to include <poll.h> instead of <sys/poll.h>Christian Wiese1-1/+0
This is a very cosmetic change but I think it is good to be standards compliant. The standard defines <poll.h> and not <sys/poll.h>: http://pubs.opengroup.org/onlinepubs/009696799/basedefs/poll.h.html When building against musl libc it silences some annoying cpp warnings like this: ----------------------------------------------------------------------- warning: #warning redirecting incorrect #include <sys/poll.h> to <poll.h> [-Wcpp] ----------------------------------------------------------------------- Signed-off-by: Christian Wiese <chris@opensde.org> Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2014-02-24ring: Get rid of unnecessary wrapper for get_sockopt_tpacketTobias Klauser1-13/+8
get_sockopt_tpacket is never used in the "raw" version and the wrapper does no additional checking anyway, so get rid of it. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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>
2013-08-20configure: allow trafgen build when only TPACKET_V2 is availableDaniel Borkmann1-0/+9
On machines like RHEL6 that do not have support for TPACKET_V3, we should still allow at least trafgen to be built for network testing. Thus, do something useful with the TPACKET_V3 configure check and comment out in ring.h relevant structures. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-06-04xutils: eliminate xutils, move rest to epoll2Daniel Borkmann1-1/+0
Finally eliminate xutils.{c,h} and move the rest to epoll2. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-06-04xutils: move device management functions out of xutilsDaniel Borkmann1-0/+1
Move those functions out so that they can be more easily maintained in its separate file. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-31ring: netsniff-ng: migrate capture only to TPACKET_V3Daniel Borkmann1-0/+7
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 Borkmann1-1/+1
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 Borkmann1-0/+4
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 Borkmann1-0/+18
Implement ring setup routines and structures for TPACKET_V3. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-05-30ring: prepare setup_rx_ring_layout for support in v2/v3Daniel Borkmann1-0/+7
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 Borkmann1-1/+10
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 Borkmann1-10/+0
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>
2013-05-30ring: set_sockopt_tpacket: rename to set_sockopt_tpacket_v2Daniel Borkmann1-1/+1
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>
2013-05-30ring: 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>
2013-05-13ring: break out timestamping since not directly relatedDaniel Borkmann1-35/+0
Break out the timestamping part of the ring.h file, since it's not directly related to the {t,r}x_ring. Also inlining doesn't make sense here. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-04-23ring: tstamp: no need for tx tsDaniel Borkmann1-1/+1
Set TX timestamping to HWTSTAMP_TX_OFF. We do not use it, therefore do not waist time keeping track of it. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-03-16ring: don't care if we cannot active hw timestampingDaniel Borkmann1-13/+8
Hw timestaming is currently done, if we have the header file from the kernel available. If it fails, we currently bail out, which is bullshit. Just returning is enough, since some users might have the header available, but not a NIC supporting hw timestaming. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
2013-03-15all: import netsniff-ng 0.5.8-rc0 sourceDaniel Borkmann1-0/+174
We decided to get rid of the old Git history and start a new one for several reasons: *) Allow / enforce only high-quality commits (which was not the case for many commits in the history), have a policy that is more close to the one from the Linux kernel. With high quality commits, we mean code that is logically split into commits and commit messages that are signed-off and have a proper subject and message body. We do not allow automatic Github merges anymore, since they are total bullshit. However, we will either cherry-pick your patches or pull them manually. *) The old archive was about ~27MB for no particular good reason. This basically derived from the bad decision that also some PDF files where stored there. From this moment onwards, no binary objects are allowed to be stored in this repository anymore. The old archive is not wiped away from the Internet. You will still be able to find it, e.g. on git.cryptoism.org etc. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
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