- 29 8月, 2009 10 次提交
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由 Stephen Hemminger 提交于
The kernel ktime_t is a nice generic infrastructure for mananging high resolution times, as is done in pktgen. Signed-off-by: NStephen Hemminger <shemminger@vyatta.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Stephen Hemminger 提交于
If not using delay then no need to update next_tx after each packet sent. This allows pktgen to send faster especially on systems with slower clock sources. Signed-off-by: NStephen Hemminger <shemminger@vyatta.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Stephen Hemminger 提交于
Handle standard (and non-standard) return values in a switch. Signed-off-by: NStephen Hemminger <shemminger@vyatta.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Stephen Hemminger 提交于
netdev_alloc_skb is NUMA node aware. Also, don't exhaust atomic emergency pool. Don't want pktgen to cause OOM behaviour. Signed-off-by: NStephen Hemminger <shemminger@vyatta.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Stephen Hemminger 提交于
The if statement to test for "should a new packet be used" can be simplified. Signed-off-by: NStephen Hemminger <shemminger@vyatta.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Stephen Hemminger 提交于
Do some reorganization of transmit logic path: * move transmit queue full idle to separate routine * add a cpu_relax() * eliminate some of the uneeded goto's * if queue is still stopped, go back to main thread loop. * don't give up transmitting if quantum is exhausted (be greedy) Signed-off-by: NStephen Hemminger <shemminger@vyatta.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Stephen Hemminger 提交于
All the callers were freeing skb after stopping device. Remove unneeded forward decl. Signed-off-by: NStephen Hemminger <shemminger@vyatta.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Stephen Hemminger 提交于
Signed-off-by: NStephen Hemminger <shemminger@vyatta.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Stephen Hemminger 提交于
Don't force inlining where not needed. Gcc does better job of deciding to inline local functions. Signed-off-by: NStephen Hemminger <shemminger@vyatta.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Stephen Hemminger 提交于
A couple of minor functions can be written more compactly. Signed-off-by: NStephen Hemminger <shemminger@vyatta.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 08 6月, 2009 1 次提交
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由 Figo.zhang 提交于
vfree() does its own 'NULL' check, so no need for check before calling it. Signed-off-by: NFigo.zhang <figo1802@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 26 5月, 2009 1 次提交
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由 Eric Dumazet 提交于
We would like to get rid of netdev->trans_start = jiffies; that about all net drivers have to use in their start_xmit() function, and use txq->trans_start instead. This can be done generically in core network, as suggested by David. Some devices, (particularly loopback) dont need trans_start update, because they dont have transmit watchdog. We could add a new device flag, or rely on fact that txq->tran_start can be updated is txq->xmit_lock_owner is different than -1. Use a helper function to hide our choice. Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 22 5月, 2009 1 次提交
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由 Florian Westphal 提交于
typo -- pkt_dev->nflows is for stats only, the number of concurrent flows is stored in cflows. Reported-By: NVladimir Ivashchenko <hazard@francoudi.com> Signed-off-by: NFlorian Westphal <fw@strlen.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 31 3月, 2009 1 次提交
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由 Alexey Dobriyan 提交于
Setting ->owner as done currently (pde->owner = THIS_MODULE) is racy as correctly noted at bug #12454. Someone can lookup entry with NULL ->owner, thus not pinning enything, and release it later resulting in module refcount underflow. We can keep ->owner and supply it at registration time like ->proc_fops and ->data. But this leaves ->owner as easy-manipulative field (just one C assignment) and somebody will forget to unpin previous/pin current module when switching ->owner. ->proc_fops is declared as "const" which should give some thoughts. ->read_proc/->write_proc were just fixed to not require ->owner for protection. rmmod'ed directories will be empty and return "." and ".." -- no harm. And directories with tricky enough readdir and lookup shouldn't be modular. We definitely don't want such modular code. Removing ->owner will also make PDE smaller. So, let's nuke it. Kudos to Jeff Layton for reminding about this, let's say, oversight. http://bugzilla.kernel.org/show_bug.cgi?id=12454Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
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- 27 2月, 2009 1 次提交
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由 Wei Yongjun 提交于
Remove some pointless conditionals before kfree_skb(). Signed-off-by: NWei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 26 11月, 2008 1 次提交
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由 Alexey Dobriyan 提交于
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 21 11月, 2008 1 次提交
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由 Stephen Hemminger 提交于
This patch moves neigh_setup and hard_start_xmit into the network device ops structure. For bisection, fix all the previously converted drivers as well. Bonding driver took the biggest hit on this. Added a prefetch of the hard_start_xmit in the fast path to try and reduce any impact this would have. Signed-off-by: NStephen Hemminger <shemminger@vyatta.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 20 11月, 2008 1 次提交
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由 Robert Olsson 提交于
As number of TX queues in unrelated to number of CPU's we remove this test and just make sure nxtq never gets exceeded. Signed-off-by: NRobert Olsson <robert.olsson@its.uu.se> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 11 11月, 2008 1 次提交
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由 Jesse Brandeburg 提交于
While testing pktgen, I found that sometimes my configurations from previous runs would be left over, particularly when going from a test with 8 threads down to a test with 4 threads. This adds new functionality to pktgen where you can call pgset "reset" and it will be just like you just insmod'ed pktgen again. Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: NRobert Olsson <robert.olsson@its.uu.se> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 29 10月, 2008 1 次提交
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由 Jesse Brandeburg 提交于
when testing the new pktgen module with multiple queues and ixgbe with: pgset "flag QUEUE_MAP_CPU" I found that I was getting errors in dmesg like: pktgen: WARNING: QUEUE_MAP_CPU disabled because CPU count (8) exceeds number <4>pktgen: WARNING: of tx queues (8) on eth15 you'll note, 8 really doesn't exceed 8. This patch seemed to fix the logic errors and also the attempts at limiting line length in printk (which didn't work anyway) Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: NRobert Olsson <robert.olsson@its.uu.se> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 28 10月, 2008 1 次提交
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由 Johannes Berg 提交于
This converts pretty much everything to print_mac. There were a few things that had conflicts which I have just dropped for now, no harm done. I've built an allyesconfig with this and looked at the files that weren't built very carefully, but it's a huge patch. Signed-off-by: NJohannes Berg <johannes@sipsolutions.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 14 10月, 2008 1 次提交
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由 Ilpo Järvinen 提交于
Seems that skb goes into void unless something magic happened in pskb_expand_head in case of failure. Signed-off-by: NIlpo Järvinen <ilpo.jarvinen@helsinki.fi> Acked-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 14 8月, 2008 1 次提交
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由 Andrew Gallatin 提交于
With the new multi-queue transmit code, it is possible to accidentally make pktgen pick a non-existing tx queue simply by using a stale script to drive pktgen. Access to this non-existing tx queue will then trigger a bad memory access and kill the machine. For example, setting "queue_map_max 2" will cause my machine to die when accessing a garbage spinlock in the non-existing tx queue: BUG: spinlock bad magic on CPU#0, kpktgend_0/564 lock: ffff88001ddf6718, .magic: ffffffff, .owner: /-1, .owner_cpu: 0 Pid: 564, comm: kpktgend_0 Not tainted 2.6.27-rc3 #35 Call Trace: [<ffffffff803a1228>] spin_bug+0xa4/0xac [<ffffffff803a1253>] _raw_spin_lock+0x23/0x123 [<ffffffff8055b06f>] _spin_lock_bh+0x17/0x1b [<ffffffff804cb57d>] pktgen_thread_worker+0xa97/0x1002 [<ffffffff8022874d>] ? finish_task_switch+0x38/0x97 [<ffffffff80242077>] ? autoremove_wake_function+0x0/0x36 [<ffffffff80242077>] ? autoremove_wake_function+0x0/0x36 [<ffffffff804caae6>] ? pktgen_thread_worker+0x0/0x1002 [<ffffffff80241a40>] kthread+0x44/0x6d [<ffffffff8020c399>] child_rip+0xa/0x11 [<ffffffff802419fc>] ? kthread+0x0/0x6d [<ffffffff8020c38f>] ? child_rip+0x0/0x11 The attached patch adds some sanity checking to prevent these sorts of configuration errors. Signed-off-by: NAndrew Gallatin <gallatin@myri.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 07 8月, 2008 1 次提交
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由 Robert Olsson 提交于
Sofar far pktgen have had a restriction to only use one device per kernel thread. With the new multiqueue architecture this is no longer adequate. The patch below is an effort to remove this by in pktgen configuration adding a tag to the device name a la eth0@0 etc. The tag is used for usual device config just as before. Also a new flag is introduced to mirror queue_map with sending threads smp_processor_id() QUEUE_MAP_CPU. An example: We use 4 CPU's to send to one 10g interface (eth0) and we use the new tagging to send a mix of packet sizes, 64, 576 and 1500 bytes. Also we use TX queues according to smp_processor_id() PGDEV=/proc/net/pktgen/kpktgend_0 pgset "add_device eth0@0" PGDEV=/proc/net/pktgen/kpktgend_1 pgset "add_device eth0@1" PGDEV=/proc/net/pktgen/kpktgend_2 pgset "add_device eth0@2" PGDEV=/proc/net/pktgen/kpktgend_3 pgset "add_device eth0@3" .... PGDEV=/proc/net/pktgen/eth0@0 pgset "pkt_size 64" pgset "flag QUEUE_MAP_CPU" PGDEV=/proc/net/pktgen/eth0@1 pgset "pkt_size 572" pgset "flag QUEUE_MAP_CPU" PGDEV=/proc/net/pktgen/eth0@2 pgset "pkt_size 1496" PGDEV=/proc/net/pktgen/eth0@3 pgset "pkt_size 1496" pgset "flag QUEUE_MAP_CPU" Signed-off-by: NRobert Olsson <robert.olsson@its.uu.se> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 06 8月, 2008 2 次提交
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由 Robert Olsson 提交于
dst_mac_count and src_mac_count patch from Eneas Hunguana We have sent one mac address to much. Signed-off-by: NRobert Olsson <robert.olsson@its.uu.se> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Robert Olsson 提交于
Random flow generation has not worked. This fixes it. Signed-off-by: NRobert Olsson <robert.olsson@its.uu.se> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 01 8月, 2008 1 次提交
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由 David S. Miller 提交于
When support for multiple TX queues were added, the netif_tx_lock() routines we converted to iterate over all TX queues and grab each queue's spinlock. This causes heartburn for lockdep and it's not a healthy thing to do with lots of TX queues anyways. So modify this to use a top-level lock and a "frozen" state for the individual TX queues. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 20 7月, 2008 1 次提交
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由 YOSHIFUJI Hideaki 提交于
Without CONFIG_NET_NS, namespace is always &init_net. Compiler will be able to omit namespace comparisons with this patch. Signed-off-by: NYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 18 7月, 2008 1 次提交
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由 David S. Miller 提交于
This effectively "flips the switch" by making the core networking and multiqueue-aware drivers use the new TX multiqueue structures. Non-multiqueue drivers need no changes. The interfaces they use such as netif_stop_queue() degenerate into an operation on TX queue zero. So everything "just works" for them. Code that really wants to do "X" to all TX queues now invokes a routine that does so, such as netif_tx_wake_all_queues(), netif_tx_stop_all_queues(), etc. pktgen and netpoll required a little bit more surgery than the others. In particular the pktgen changes, whilst functional, could be largely improved. The initial check in pktgen_xmit() will sometimes check the wrong queue, which is mostly harmless. The thing to do is probably to invoke fill_packet() earlier. The bulk of the netpoll changes is to make the code operate solely on the TX queue indicated by by the SKB queue mapping. Setting of the SKB queue mapping is entirely confined inside of net/core/dev.c:dev_pick_tx(). If we end up needing any kind of special semantics (drops, for example) it will be implemented here. Finally, we now have a "real_num_tx_queues" which is where the driver indicates how many TX queues are actually active. With IGB changes from Jeff Kirsher. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 21 5月, 2008 1 次提交
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由 Denis V. Lunev 提交于
The following courruption can happen during pktgen stop: list_del corruption. prev->next should be ffff81007e8a5e70, but was 6b6b6b6b6b6b6b6b kernel BUG at lib/list_debug.c:67! :pktgen:pktgen_thread_worker+0x374/0x10b0 ? autoremove_wake_function+0x0/0x40 ? _spin_unlock_irqrestore+0x42/0x80 ? :pktgen:pktgen_thread_worker+0x0/0x10b0 kthread+0x4d/0x80 child_rip+0xa/0x12 ? restore_args+0x0/0x30 ? kthread+0x0/0x80 ? child_rip+0x0/0x12 RIP list_del+0x48/0x70 The problem is that pktgen_thread_worker can not be executed if kthread_stop has been called too early. Insert a completion on the normal initialization path to make sure that pktgen_thread_worker will gain the control for sure. Signed-off-by: NDenis V. Lunev <den@openvz.org> Acked-by: NAlexey Dobriyan <adobriyan@openvz.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 02 5月, 2008 1 次提交
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由 Denis V. Lunev 提交于
Simply replace proc_create and further data assigned with proc_create_data. Additionally, there is no need to assign NULL to PDE->data after creation, /proc generic has already done this for us. Signed-off-by: NDenis V. Lunev <den@openvz.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 26 3月, 2008 1 次提交
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由 YOSHIFUJI Hideaki 提交于
Introduce per-net_device inlines: dev_net(), dev_net_set(). Without CONFIG_NET_NS, no namespace other than &init_net exists. Let's explicitly define them to help compiler optimizations. Signed-off-by: NYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
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- 29 2月, 2008 1 次提交
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由 Wang Chen 提交于
Use proc_create() to make sure that ->proc_fops be setup before gluing PDE to main tree. Signed-off-by: NWang Chen <wangchen@cn.fujitsu.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 01 2月, 2008 2 次提交
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由 Jesse Brandeburg 提交于
when using pktgen to send delay packets the module prints repeatedly to the kernel log: sleeping for X sleeping for X ... This is probably just a debugging item left in and should not be enabled for regular use of the module. Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Rami Rosen 提交于
- Remove an unused definition (LAT_BUCKETS_MAX) in net/core/pktgen.c. - Remove the corresponding comment. - The LAT_BUCKETS_MAX seems to have to do with a patch from a long time ago which was not applied (Ben Greear), which dealt with latency counters. See, for example : http://oss.sgi.com/archives/netdev/2002-09/msg00184.htmlSigned-off-by: NRami Rosen <ramirose@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 29 1月, 2008 4 次提交
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由 Jan Engelhardt 提交于
This short patch modifies the IPv4 networking to enable use of the 240.0.0.0/4 (aka "class-E") address space as propsed in the internet draft draft-fuller-240space-00.txt. Signed-off-by: NJan Engelhardt <jengelh@computergmbh.de> Acked-by: NYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ilpo Järvinen 提交于
net/core/pktgen.c: pktgen_stop_device | -50 pktgen_run | -105 pktgen_if_show | -37 pktgen_thread_worker | -702 4 functions changed, 894 bytes removed, diff: -894 net/core/pktgen.c: getCurUs | +36 1 function changed, 36 bytes added, diff: +36 net/core/pktgen.o: 5 functions changed, 36 bytes added, 894 bytes removed, diff: -858 Signed-off-by: NIlpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ilpo Järvinen 提交于
Signed-off-by: NIlpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Joe Perches 提交于
Signed-off-by: NJoe Perches <joe@perches.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 20 11月, 2007 1 次提交
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由 Pavel Emelyanov 提交于
The pktgen_output_ipsec() function can unlock this lock twice due to merged error and plain paths. Remove one of the calls to spin_unlock. Other possible solution would be to place "return 0" right after the first unlock, but at this place the err is known to be 0, so these solutions are the same except for this one makes the code shorter. Signed-off-by: NPavel Emelyanov <xemul@openvz.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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