| Commit message (Collapse) | Author | Age |
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Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch removes the net_random and net_srandom macros and replaces
them with direct calls to the prandom ones. As new commits only seem to
use prandom_u32 there is no use to keep them around.
This change makes it easier to grep for users of prandom_u32.
Signed-off-by: Aruna-Hewapathirane <aruna.hewapathirane@gmail.com>
Suggested-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Suggested-by: Simon Schneider <simon-schneider@gmx.net>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We still need this notifier even when we don't config
PROC_FS.
It should be rare to have a kernel without PROC_FS,
so just for completeness.
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The existing net/netif_rx and net/netif_receive_skb trace events
provide little information about the skb, nor do they indicate how it
entered the stack.
Add trace events at entry of each of the exported functions, including
most fields that are likely to be interesting for debugging driver
datapath behaviour. Split netif_rx() and netif_receive_skb() so that
internal calls are not traced.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The existing net/net_dev_xmit trace event provides little information
about the skb that has been passed to the driver, and it is not
simple to add more since the skb may already have been freed at
the point the event is emitted.
Add a separate trace event before the skb is passed to the driver,
including most fields that are likely to be interesting for debugging
driver datapath behaviour.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds a function to set up the partial checksum offset for IP
packets (and optionally re-calculate the pseudo-header checksum) into the
core network code.
The implementation was previously private and duplicated between xen-netback
and xen-netfront, however it is not xen-specific and is potentially useful
to any network driver.
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Cc: David Miller <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Veaceslav Falico <vfalico@redhat.com>
Cc: Alexander Duyck <alexander.h.duyck@intel.com>
Cc: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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And it can become static.
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next
Conflicts:
net/xfrm/xfrm_policy.c
Steffen Klassert says:
====================
This pull request has a merge conflict between commits be7928d20bab
("net: xfrm: xfrm_policy: fix inline not at beginning of declaration") and
da7c224b1baa ("net: xfrm: xfrm_policy: silence compiler warning") from
the net-next tree and commit 2f3ea9a95c58 ("xfrm: checkpatch erros with
inline keyword position") from the ipsec-next tree.
The version from net-next can be used, like it is done in linux-next.
1) Checkpatch cleanups, from Weilong Chen.
2) Fix lockdep complaints when pktgen is used with IPsec,
from Fan Du.
3) Update pktgen to allow any combination of IPsec transport/tunnel mode
and AH/ESP/IPcomp type, from Fan Du.
4) Make pktgen_dst_metrics static, Fengguang Wu.
5) Compile fix for pktgen when CONFIG_XFRM is not set,
from Fan Du.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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0-DAY kernel build testing backend reported below error:
All error/warnings:
net/core/pktgen.c: In function 'pktgen_if_write':
>> >> net/core/pktgen.c:1487:10: error: 'struct pktgen_dev' has no member named 'spi'
>> >> net/core/pktgen.c:1488:43: error: 'struct pktgen_dev' has no member named 'spi'
Fix this by encapuslating the code with CONFIG_XFRM.
Cc: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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CC: Fan Du <fan.du@windriver.com>
CC: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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If user run pktgen plus ipsec by using spi, show spi value
properly when cat /proc/net/pktgen/ethX
Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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Introduce xfrm_state_lookup_byspi to find user specified by custom
from "pgset spi xxx". Using this scheme, any flow regardless its
saddr/daddr could be transform by SA specified with configurable
spi.
Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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IPsec tunnel mode encapuslation needs to set outter ip header
with right protocol/ttl/id value with regard to skb->dst->child.
Looking up a rt in a standard way is absolutely wrong for every
packet transmission. In a simple way, construct a dst by setting
neccessary information to make tunnel mode encapuslation working.
Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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User could set specific SPI value to arm pktgen flow with IPsec
transformation, instead of looking up SA by sadr/daddr. The reaseon
to do so is because current state lookup scheme is both slow and, most
important of all, in fact pktgen doesn't need to match any SA state
addresses information, all it needs is the SA transfromation shell to
do the encapuslation.
And this option also provide user an alternative to using pktgen
test existing SA without creating new ones.
Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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Acquiring xfrm_state_lock in process context is expected to turn BH off,
as this lock is also used in BH context, namely xfrm state timer handler.
Otherwise it surprises LOCKDEP with below messages.
[ 81.422781] pktgen: Packet Generator for packet performance testing. Version: 2.74
[ 81.725194]
[ 81.725211] =========================================================
[ 81.725212] [ INFO: possible irq lock inversion dependency detected ]
[ 81.725215] 3.13.0-rc2+ #92 Not tainted
[ 81.725216] ---------------------------------------------------------
[ 81.725218] kpktgend_0/2780 just changed the state of lock:
[ 81.725220] (xfrm_state_lock){+.+...}, at: [<ffffffff816dd751>] xfrm_stateonly_find+0x41/0x1f0
[ 81.725231] but this lock was taken by another, SOFTIRQ-safe lock in the past:
[ 81.725232] (&(&x->lock)->rlock){+.-...}
[ 81.725232]
[ 81.725232] and interrupts could create inverse lock ordering between them.
[ 81.725232]
[ 81.725235]
[ 81.725235] other info that might help us debug this:
[ 81.725237] Possible interrupt unsafe locking scenario:
[ 81.725237]
[ 81.725238] CPU0 CPU1
[ 81.725240] ---- ----
[ 81.725241] lock(xfrm_state_lock);
[ 81.725243] local_irq_disable();
[ 81.725244] lock(&(&x->lock)->rlock);
[ 81.725246] lock(xfrm_state_lock);
[ 81.725248] <Interrupt>
[ 81.725249] lock(&(&x->lock)->rlock);
[ 81.725251]
[ 81.725251] *** DEADLOCK ***
[ 81.725251]
[ 81.725254] no locks held by kpktgend_0/2780.
[ 81.725255]
[ 81.725255] the shortest dependencies between 2nd lock and 1st lock:
[ 81.725269] -> (&(&x->lock)->rlock){+.-...} ops: 8 {
[ 81.725274] HARDIRQ-ON-W at:
[ 81.725276] [<ffffffff8109a64b>] __lock_acquire+0x65b/0x1d70
[ 81.725282] [<ffffffff8109c3c7>] lock_acquire+0x97/0x130
[ 81.725284] [<ffffffff81774af6>] _raw_spin_lock+0x36/0x70
[ 81.725289] [<ffffffff816dc3a3>] xfrm_timer_handler+0x43/0x290
[ 81.725292] [<ffffffff81059437>] __tasklet_hrtimer_trampoline+0x17/0x40
[ 81.725300] [<ffffffff8105a1b7>] tasklet_hi_action+0xd7/0xf0
[ 81.725303] [<ffffffff81059ac6>] __do_softirq+0xe6/0x2d0
[ 81.725305] [<ffffffff8105a026>] irq_exit+0x96/0xc0
[ 81.725308] [<ffffffff8177fd0a>] smp_apic_timer_interrupt+0x4a/0x60
[ 81.725313] [<ffffffff8177e96f>] apic_timer_interrupt+0x6f/0x80
[ 81.725316] [<ffffffff8100b7c6>] arch_cpu_idle+0x26/0x30
[ 81.725329] [<ffffffff810ace28>] cpu_startup_entry+0x88/0x2b0
[ 81.725333] [<ffffffff8102e5b0>] start_secondary+0x190/0x1f0
[ 81.725338] IN-SOFTIRQ-W at:
[ 81.725340] [<ffffffff8109a61d>] __lock_acquire+0x62d/0x1d70
[ 81.725342] [<ffffffff8109c3c7>] lock_acquire+0x97/0x130
[ 81.725344] [<ffffffff81774af6>] _raw_spin_lock+0x36/0x70
[ 81.725347] [<ffffffff816dc3a3>] xfrm_timer_handler+0x43/0x290
[ 81.725349] [<ffffffff81059437>] __tasklet_hrtimer_trampoline+0x17/0x40
[ 81.725352] [<ffffffff8105a1b7>] tasklet_hi_action+0xd7/0xf0
[ 81.725355] [<ffffffff81059ac6>] __do_softirq+0xe6/0x2d0
[ 81.725358] [<ffffffff8105a026>] irq_exit+0x96/0xc0
[ 81.725360] [<ffffffff8177fd0a>] smp_apic_timer_interrupt+0x4a/0x60
[ 81.725363] [<ffffffff8177e96f>] apic_timer_interrupt+0x6f/0x80
[ 81.725365] [<ffffffff8100b7c6>] arch_cpu_idle+0x26/0x30
[ 81.725368] [<ffffffff810ace28>] cpu_startup_entry+0x88/0x2b0
[ 81.725370] [<ffffffff8102e5b0>] start_secondary+0x190/0x1f0
[ 81.725373] INITIAL USE at:
[ 81.725375] [<ffffffff8109a31a>] __lock_acquire+0x32a/0x1d70
[ 81.725385] [<ffffffff8109c3c7>] lock_acquire+0x97/0x130
[ 81.725388] [<ffffffff81774af6>] _raw_spin_lock+0x36/0x70
[ 81.725390] [<ffffffff816dc3a3>] xfrm_timer_handler+0x43/0x290
[ 81.725394] [<ffffffff81059437>] __tasklet_hrtimer_trampoline+0x17/0x40
[ 81.725398] [<ffffffff8105a1b7>] tasklet_hi_action+0xd7/0xf0
[ 81.725401] [<ffffffff81059ac6>] __do_softirq+0xe6/0x2d0
[ 81.725404] [<ffffffff8105a026>] irq_exit+0x96/0xc0
[ 81.725407] [<ffffffff8177fd0a>] smp_apic_timer_interrupt+0x4a/0x60
[ 81.725409] [<ffffffff8177e96f>] apic_timer_interrupt+0x6f/0x80
[ 81.725412] [<ffffffff8100b7c6>] arch_cpu_idle+0x26/0x30
[ 81.725415] [<ffffffff810ace28>] cpu_startup_entry+0x88/0x2b0
[ 81.725417] [<ffffffff8102e5b0>] start_secondary+0x190/0x1f0
[ 81.725420] }
[ 81.725421] ... key at: [<ffffffff8295b9c8>] __key.46349+0x0/0x8
[ 81.725445] ... acquired at:
[ 81.725446] [<ffffffff8109c3c7>] lock_acquire+0x97/0x130
[ 81.725449] [<ffffffff81774af6>] _raw_spin_lock+0x36/0x70
[ 81.725452] [<ffffffff816dc057>] __xfrm_state_delete+0x37/0x140
[ 81.725454] [<ffffffff816dc18c>] xfrm_state_delete+0x2c/0x50
[ 81.725456] [<ffffffff816dc277>] xfrm_state_flush+0xc7/0x1b0
[ 81.725458] [<ffffffffa005f6cc>] pfkey_flush+0x7c/0x100 [af_key]
[ 81.725465] [<ffffffffa005efb7>] pfkey_process+0x1c7/0x1f0 [af_key]
[ 81.725468] [<ffffffffa005f139>] pfkey_sendmsg+0x159/0x260 [af_key]
[ 81.725471] [<ffffffff8162c16f>] sock_sendmsg+0xaf/0xc0
[ 81.725476] [<ffffffff8162c99c>] SYSC_sendto+0xfc/0x130
[ 81.725479] [<ffffffff8162cf3e>] SyS_sendto+0xe/0x10
[ 81.725482] [<ffffffff8177dd12>] system_call_fastpath+0x16/0x1b
[ 81.725484]
[ 81.725486] -> (xfrm_state_lock){+.+...} ops: 11 {
[ 81.725490] HARDIRQ-ON-W at:
[ 81.725493] [<ffffffff8109a64b>] __lock_acquire+0x65b/0x1d70
[ 81.725504] [<ffffffff8109c3c7>] lock_acquire+0x97/0x130
[ 81.725507] [<ffffffff81774e4b>] _raw_spin_lock_bh+0x3b/0x70
[ 81.725510] [<ffffffff816dc1df>] xfrm_state_flush+0x2f/0x1b0
[ 81.725513] [<ffffffffa005f6cc>] pfkey_flush+0x7c/0x100 [af_key]
[ 81.725516] [<ffffffffa005efb7>] pfkey_process+0x1c7/0x1f0 [af_key]
[ 81.725519] [<ffffffffa005f139>] pfkey_sendmsg+0x159/0x260 [af_key]
[ 81.725522] [<ffffffff8162c16f>] sock_sendmsg+0xaf/0xc0
[ 81.725525] [<ffffffff8162c99c>] SYSC_sendto+0xfc/0x130
[ 81.725527] [<ffffffff8162cf3e>] SyS_sendto+0xe/0x10
[ 81.725530] [<ffffffff8177dd12>] system_call_fastpath+0x16/0x1b
[ 81.725533] SOFTIRQ-ON-W at:
[ 81.725534] [<ffffffff8109a67a>] __lock_acquire+0x68a/0x1d70
[ 81.725537] [<ffffffff8109c3c7>] lock_acquire+0x97/0x130
[ 81.725539] [<ffffffff81774af6>] _raw_spin_lock+0x36/0x70
[ 81.725541] [<ffffffff816dd751>] xfrm_stateonly_find+0x41/0x1f0
[ 81.725544] [<ffffffffa008af03>] mod_cur_headers+0x793/0x7f0 [pktgen]
[ 81.725547] [<ffffffffa008bca2>] pktgen_thread_worker+0xd42/0x1880 [pktgen]
[ 81.725550] [<ffffffff81078f84>] kthread+0xe4/0x100
[ 81.725555] [<ffffffff8177dc6c>] ret_from_fork+0x7c/0xb0
[ 81.725565] INITIAL USE at:
[ 81.725567] [<ffffffff8109a31a>] __lock_acquire+0x32a/0x1d70
[ 81.725569] [<ffffffff8109c3c7>] lock_acquire+0x97/0x130
[ 81.725572] [<ffffffff81774e4b>] _raw_spin_lock_bh+0x3b/0x70
[ 81.725574] [<ffffffff816dc1df>] xfrm_state_flush+0x2f/0x1b0
[ 81.725576] [<ffffffffa005f6cc>] pfkey_flush+0x7c/0x100 [af_key]
[ 81.725580] [<ffffffffa005efb7>] pfkey_process+0x1c7/0x1f0 [af_key]
[ 81.725583] [<ffffffffa005f139>] pfkey_sendmsg+0x159/0x260 [af_key]
[ 81.725586] [<ffffffff8162c16f>] sock_sendmsg+0xaf/0xc0
[ 81.725589] [<ffffffff8162c99c>] SYSC_sendto+0xfc/0x130
[ 81.725594] [<ffffffff8162cf3e>] SyS_sendto+0xe/0x10
[ 81.725597] [<ffffffff8177dd12>] system_call_fastpath+0x16/0x1b
[ 81.725599] }
[ 81.725600] ... key at: [<ffffffff81cadef8>] xfrm_state_lock+0x18/0x50
[ 81.725606] ... acquired at:
[ 81.725607] [<ffffffff810995c0>] check_usage_backwards+0x110/0x150
[ 81.725609] [<ffffffff81099e96>] mark_lock+0x196/0x2f0
[ 81.725611] [<ffffffff8109a67a>] __lock_acquire+0x68a/0x1d70
[ 81.725614] [<ffffffff8109c3c7>] lock_acquire+0x97/0x130
[ 81.725616] [<ffffffff81774af6>] _raw_spin_lock+0x36/0x70
[ 81.725627] [<ffffffff816dd751>] xfrm_stateonly_find+0x41/0x1f0
[ 81.725629] [<ffffffffa008af03>] mod_cur_headers+0x793/0x7f0 [pktgen]
[ 81.725632] [<ffffffffa008bca2>] pktgen_thread_worker+0xd42/0x1880 [pktgen]
[ 81.725635] [<ffffffff81078f84>] kthread+0xe4/0x100
[ 81.725637] [<ffffffff8177dc6c>] ret_from_fork+0x7c/0xb0
[ 81.725640]
[ 81.725641]
[ 81.725641] stack backtrace:
[ 81.725645] CPU: 0 PID: 2780 Comm: kpktgend_0 Not tainted 3.13.0-rc2+ #92
[ 81.725647] Hardware name: innotek GmbH VirtualBox, BIOS VirtualBox 12/01/2006
[ 81.725649] ffffffff82537b80 ffff880018199988 ffffffff8176af37 0000000000000007
[ 81.725652] ffff8800181999f0 ffff8800181999d8 ffffffff81099358 ffffffff82537b80
[ 81.725655] ffffffff81a32def ffff8800181999f4 0000000000000000 ffff880002cbeaa8
[ 81.725659] Call Trace:
[ 81.725664] [<ffffffff8176af37>] dump_stack+0x46/0x58
[ 81.725667] [<ffffffff81099358>] print_irq_inversion_bug.part.42+0x1e8/0x1f0
[ 81.725670] [<ffffffff810995c0>] check_usage_backwards+0x110/0x150
[ 81.725672] [<ffffffff81099e96>] mark_lock+0x196/0x2f0
[ 81.725675] [<ffffffff810994b0>] ? check_usage_forwards+0x150/0x150
[ 81.725685] [<ffffffff8109a67a>] __lock_acquire+0x68a/0x1d70
[ 81.725691] [<ffffffff810899a5>] ? sched_clock_local+0x25/0x90
[ 81.725694] [<ffffffff81089b38>] ? sched_clock_cpu+0xa8/0x120
[ 81.725697] [<ffffffff8109a31a>] ? __lock_acquire+0x32a/0x1d70
[ 81.725699] [<ffffffff816dd751>] ? xfrm_stateonly_find+0x41/0x1f0
[ 81.725702] [<ffffffff8109c3c7>] lock_acquire+0x97/0x130
[ 81.725704] [<ffffffff816dd751>] ? xfrm_stateonly_find+0x41/0x1f0
[ 81.725707] [<ffffffff810899a5>] ? sched_clock_local+0x25/0x90
[ 81.725710] [<ffffffff81774af6>] _raw_spin_lock+0x36/0x70
[ 81.725712] [<ffffffff816dd751>] ? xfrm_stateonly_find+0x41/0x1f0
[ 81.725715] [<ffffffff810971ec>] ? lock_release_holdtime.part.26+0x1c/0x1a0
[ 81.725717] [<ffffffff816dd751>] xfrm_stateonly_find+0x41/0x1f0
[ 81.725721] [<ffffffffa008af03>] mod_cur_headers+0x793/0x7f0 [pktgen]
[ 81.725724] [<ffffffffa008bca2>] pktgen_thread_worker+0xd42/0x1880 [pktgen]
[ 81.725727] [<ffffffffa008ba71>] ? pktgen_thread_worker+0xb11/0x1880 [pktgen]
[ 81.725729] [<ffffffff8109cf9d>] ? trace_hardirqs_on+0xd/0x10
[ 81.725733] [<ffffffff81775410>] ? _raw_spin_unlock_irq+0x30/0x40
[ 81.725745] [<ffffffff8151faa0>] ? e1000_clean+0x9d0/0x9d0
[ 81.725751] [<ffffffff81094310>] ? __init_waitqueue_head+0x60/0x60
[ 81.725753] [<ffffffff81094310>] ? __init_waitqueue_head+0x60/0x60
[ 81.725757] [<ffffffffa008af60>] ? mod_cur_headers+0x7f0/0x7f0 [pktgen]
[ 81.725759] [<ffffffff81078f84>] kthread+0xe4/0x100
[ 81.725762] [<ffffffff81078ea0>] ? flush_kthread_worker+0x170/0x170
[ 81.725765] [<ffffffff8177dc6c>] ret_from_fork+0x7c/0xb0
[ 81.725768] [<ffffffff81078ea0>] ? flush_kthread_worker+0x170/0x170
Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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so /proc/net/xfrm_stat could give user clue about what's
wrong in this process.
Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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xfrm_state lock protects its state, i.e., VALID/DEAD and statistics,
not the transforming procedure, as both mode/type output functions
are reentrant.
Another issue is state lock can be used in BH context when state timer
alarmed, after transformation in pktgen, update state statistics acquiring
state lock should disabled BH context for a moment. Otherwise LOCKDEP
critisize this:
[ 62.354339] pktgen: Packet Generator for packet performance testing. Version: 2.74
[ 62.655444]
[ 62.655448] =================================
[ 62.655451] [ INFO: inconsistent lock state ]
[ 62.655455] 3.13.0-rc2+ #70 Not tainted
[ 62.655457] ---------------------------------
[ 62.655459] inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage.
[ 62.655463] kpktgend_0/2764 [HC0[0]:SC0[0]:HE1:SE1] takes:
[ 62.655466] (&(&x->lock)->rlock){+.?...}, at: [<ffffffffa00886f6>] pktgen_thread_worker+0x1796/0x1860 [pktgen]
[ 62.655479] {IN-SOFTIRQ-W} state was registered at:
[ 62.655484] [<ffffffff8109a61d>] __lock_acquire+0x62d/0x1d70
[ 62.655492] [<ffffffff8109c3c7>] lock_acquire+0x97/0x130
[ 62.655498] [<ffffffff81774af6>] _raw_spin_lock+0x36/0x70
[ 62.655505] [<ffffffff816dc3a3>] xfrm_timer_handler+0x43/0x290
[ 62.655511] [<ffffffff81059437>] __tasklet_hrtimer_trampoline+0x17/0x40
[ 62.655519] [<ffffffff8105a1b7>] tasklet_hi_action+0xd7/0xf0
[ 62.655523] [<ffffffff81059ac6>] __do_softirq+0xe6/0x2d0
[ 62.655526] [<ffffffff8105a026>] irq_exit+0x96/0xc0
[ 62.655530] [<ffffffff8177fd0a>] smp_apic_timer_interrupt+0x4a/0x60
[ 62.655537] [<ffffffff8177e96f>] apic_timer_interrupt+0x6f/0x80
[ 62.655541] [<ffffffff8100b7c6>] arch_cpu_idle+0x26/0x30
[ 62.655547] [<ffffffff810ace28>] cpu_startup_entry+0x88/0x2b0
[ 62.655552] [<ffffffff81761c3c>] rest_init+0xbc/0xd0
[ 62.655557] [<ffffffff81ea5e5e>] start_kernel+0x3c4/0x3d1
[ 62.655583] [<ffffffff81ea55a8>] x86_64_start_reservations+0x2a/0x2c
[ 62.655588] [<ffffffff81ea569f>] x86_64_start_kernel+0xf5/0xfc
[ 62.655592] irq event stamp: 77
[ 62.655594] hardirqs last enabled at (77): [<ffffffff810ab7f2>] vprintk_emit+0x1b2/0x520
[ 62.655597] hardirqs last disabled at (76): [<ffffffff810ab684>] vprintk_emit+0x44/0x520
[ 62.655601] softirqs last enabled at (22): [<ffffffff81059b57>] __do_softirq+0x177/0x2d0
[ 62.655605] softirqs last disabled at (15): [<ffffffff8105a026>] irq_exit+0x96/0xc0
[ 62.655609]
[ 62.655609] other info that might help us debug this:
[ 62.655613] Possible unsafe locking scenario:
[ 62.655613]
[ 62.655616] CPU0
[ 62.655617] ----
[ 62.655618] lock(&(&x->lock)->rlock);
[ 62.655622] <Interrupt>
[ 62.655623] lock(&(&x->lock)->rlock);
[ 62.655626]
[ 62.655626] *** DEADLOCK ***
[ 62.655626]
[ 62.655629] no locks held by kpktgend_0/2764.
[ 62.655631]
[ 62.655631] stack backtrace:
[ 62.655636] CPU: 0 PID: 2764 Comm: kpktgend_0 Not tainted 3.13.0-rc2+ #70
[ 62.655638] Hardware name: innotek GmbH VirtualBox, BIOS VirtualBox 12/01/2006
[ 62.655642] ffffffff8216b7b0 ffff88001be43ab8 ffffffff8176af37 0000000000000007
[ 62.655652] ffff88001c8d4fc0 ffff88001be43b18 ffffffff81766d78 0000000000000000
[ 62.655663] ffff880000000001 ffff880000000001 ffffffff8101025f ffff88001be43b18
[ 62.655671] Call Trace:
[ 62.655680] [<ffffffff8176af37>] dump_stack+0x46/0x58
[ 62.655685] [<ffffffff81766d78>] print_usage_bug+0x1f1/0x202
[ 62.655691] [<ffffffff8101025f>] ? save_stack_trace+0x2f/0x50
[ 62.655696] [<ffffffff81099f8c>] mark_lock+0x28c/0x2f0
[ 62.655700] [<ffffffff810994b0>] ? check_usage_forwards+0x150/0x150
[ 62.655704] [<ffffffff8109a67a>] __lock_acquire+0x68a/0x1d70
[ 62.655712] [<ffffffff81115b09>] ? irq_work_queue+0x69/0xb0
[ 62.655717] [<ffffffff810ab7f2>] ? vprintk_emit+0x1b2/0x520
[ 62.655722] [<ffffffff8109cec5>] ? trace_hardirqs_on_caller+0x105/0x1d0
[ 62.655730] [<ffffffffa00886f6>] ? pktgen_thread_worker+0x1796/0x1860 [pktgen]
[ 62.655734] [<ffffffff8109c3c7>] lock_acquire+0x97/0x130
[ 62.655741] [<ffffffffa00886f6>] ? pktgen_thread_worker+0x1796/0x1860 [pktgen]
[ 62.655745] [<ffffffff81774af6>] _raw_spin_lock+0x36/0x70
[ 62.655752] [<ffffffffa00886f6>] ? pktgen_thread_worker+0x1796/0x1860 [pktgen]
[ 62.655758] [<ffffffffa00886f6>] pktgen_thread_worker+0x1796/0x1860 [pktgen]
[ 62.655766] [<ffffffffa0087a79>] ? pktgen_thread_worker+0xb19/0x1860 [pktgen]
[ 62.655771] [<ffffffff8109cf9d>] ? trace_hardirqs_on+0xd/0x10
[ 62.655777] [<ffffffff81775410>] ? _raw_spin_unlock_irq+0x30/0x40
[ 62.655785] [<ffffffff8151faa0>] ? e1000_clean+0x9d0/0x9d0
[ 62.655791] [<ffffffff81094310>] ? __init_waitqueue_head+0x60/0x60
[ 62.655795] [<ffffffff81094310>] ? __init_waitqueue_head+0x60/0x60
[ 62.655800] [<ffffffffa0086f60>] ? mod_cur_headers+0x7f0/0x7f0 [pktgen]
[ 62.655806] [<ffffffff81078f84>] kthread+0xe4/0x100
[ 62.655813] [<ffffffff81078ea0>] ? flush_kthread_worker+0x170/0x170
[ 62.655819] [<ffffffff8177dc6c>] ret_from_fork+0x7c/0xb0
[ 62.655824] [<ffffffff81078ea0>] ? flush_kthread_worker+0x170/0x170
Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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Signed-off-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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Fix that "else should follow close brace '}'".
Signed-off-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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Fix checkpatch error "space prohibited xxx".
Signed-off-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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This patch clean up some checkpatch errors like this:
ERROR: "foo * bar" should be "foo *bar"
ERROR: "(foo*)" should be "(foo *)"
Signed-off-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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This patch cleanup some space errors.
Signed-off-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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Included changes:
- drop dependency against CRC16
- move to new release version
- add size check at compile time for packet structs
- update copyright years in every file
- implement new bonding/interface alternation feature
Signed-off-by: David S. Miller <davem@davemloft.net>
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The crc16 functionality is not used anymore, therefore
we can safely remove the dependency in the Kbuild file.
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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With unrolling the batadv_header into the respective structures, the
offsetof checks are now useless. Instead, add build checks for all
packet types which go over the wire to avoid problems with wrong sizes
or compatibility issues on some architectures which don't use every day.
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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Return at the end of void functions is not needed.
Since most of the void functions in the code do not do so,
make all the others consistent by removing the useless
returns. Actually all the functions to be "fixed" are in
network-coding.h only.
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
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Show tables for the multi interface operation. Originator tables
are added per hard interface.
This patch also changes the API by adding the interface to the
bat_orig_print() parameters.
Signed-off-by: Simon Wunderlich <simon@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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To show information per interface, add a debugfs hardif structure
similar to the system in sysfs. Hard interface folders will be created
in "$debugfs/batman-adv/". Files are not yet added.
Signed-off-by: Simon Wunderlich <simon@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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With the new interface alternating, the first hop may send packets
in a round robin fashion to it's neighbors because it has multiple
valid routes built by the multi interface optimization. This patch
enables the feature if bonding is selected. Note that unlike the
bonding implemented before, this version is much simpler and may
even enable multi path routing to a certain degree.
Signed-off-by: Simon Wunderlich <simon@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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The current OGM sending an aggregation functionality decides on
which interfaces a packet should be sent when it parses the forward
packet struct. However, with the network wide multi interface
optimization the outgoing interface is decided by the OGM processing
function.
This is reflected by moving the decision in the OGM processing function
and add the outgoing interface in the forwarding packet struct. This
practically implies that an OGM may be added multiple times (once per
outgoing interface), and this also affects aggregation which needs to
consider the outgoing interface as well.
Signed-off-by: Simon Wunderlich <simon@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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If the same interface is used for sending and receiving, there might be
throughput degradation on half-duplex interfaces such as WiFi. Add a
penalty if the same interface is used to reflect this problem in the
metric. At the same time, change the hop penalty from 30 to 15 so there
will be no change for single wifi mesh network. the effective hop
penalty will stay at 30 due to the new wifi penalty for these networks.
Signed-off-by: Simon Wunderlich <simon@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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For the network wide multi interface optimization there are different
routers for each outgoing interface (outgoing from the OGM perspective,
incoming for payload traffic). To reflect this, change the router and
associated data to a list of routers.
While at it, rename batadv_orig_node_get_router() to
batadv_orig_router_get() to follow the new naming scheme.
Signed-off-by: Simon Wunderlich <simon@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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For the network wide multi interface optimization it is required to save
metrics per outgoing interface in one neighbor. Therefore a new type is
introduced to keep interface-specific information. This also requires
some changes in access and list management.
The compare and equiv_or_better API calls are changed to take the
outgoing interface into consideration.
Signed-off-by: Simon Wunderlich <simon@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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Remove bonding and interface alternating code - it will be replaced
by a new, network-wide multi interface optimization which enables
both bonding and interface alternating in a better way.
Keep the sysfs and find router function though, this will be needed
later.
Signed-off-by: Simon Wunderlich <simon@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
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Currently, after changing the MTU for a device, dev_set_mtu() calls
NETDEV_CHANGEMTU notification, however doesn't verify it's return code -
which can be NOTIFY_BAD - i.e. some of the net notifier blocks refused this
change, and continues nevertheless.
To fix this, verify the return code, and if it's an error - then revert the
MTU to the original one, notify again and pass the error code.
CC: Jiri Pirko <jiri@resnulli.us>
CC: "David S. Miller" <davem@davemloft.net>
CC: Eric Dumazet <edumazet@google.com>
CC: Alexander Duyck <alexander.h.duyck@intel.com>
CC: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Reviewed-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Avoid needless export of local functions
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Simplify the GRE header length calculation in gre_gso_segment().
Switch to an approach that is simpler, faster, and more general. The
new approach will continue to be correct even if we add support for
the optional variable-length routing info that may be present in a GRE
header.
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: H.K. Jerry Chu <hkchu@google.com>
Cc: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It is not necessary at all.
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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tp->root is a void* pointer, no need to cast it.
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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tcf_match_indev() is called in fast path, it is not wise to
search for a netdev by ifindex and then compare by its name,
just compare the ifindex.
Also, dev->name could be changed by user-space, therefore
the match would be always fail, but dev->ifindex could
be consistent.
BTW, this will also save some bytes from the core struct of u32.
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It will be needed by the next patch.
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Refactor tcf_add_notify() and factor out tcf_del_notify().
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is no need to store the index separatedly
since tcf_hashinfo is allocated statically too.
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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GRO layer has a limit of 8 flows being held in GRO list,
for performance reason.
When a packet comes for a flow not yet in the list,
and list is full, we immediately give it to upper
stacks, lowering aggregation performance.
With TSO auto sizing and FQ packet scheduler, this situation
happens more often.
This patch changes strategy to simply evict the oldest flow of
the list. This works better because of the nature of packet
trains for which GRO is efficient. This also has the effect
of lowering the GRO latency if many flows are competing.
Tested :
Used a 40Gbps NIC, with 4 RX queues, and 200 concurrent TCP_STREAM
netperf.
Before patch, aggregate rate is 11Gbps (while a single flow can reach
30Gbps)
After patch, line rate is reached.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jerry Chu <hkchu@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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