1. 08 May, 2011 6 commits
  2. 07 May, 2011 5 commits
  3. 06 May, 2011 4 commits
  4. 05 May, 2011 15 commits
    • David S. Miller's avatar
      Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 · 7143b7d4
      David S. Miller authored
      Conflicts:
      	drivers/net/tg3.c
      7143b7d4
    • David S. Miller's avatar
    • Anton Blanchard's avatar
      net: Add sendmmsg socket system call · 228e548e
      Anton Blanchard authored
      This patch adds a multiple message send syscall and is the send
      version of the existing recvmmsg syscall. This is heavily
      based on the patch by Arnaldo that added recvmmsg.
      
      I wrote a microbenchmark to test the performance gains of using
      this new syscall:
      
      http://ozlabs.org/~anton/junkcode/sendmmsg_test.c
      
      
      
      The test was run on a ppc64 box with a 10 Gbit network card. The
      benchmark can send both UDP and RAW ethernet packets.
      
      64B UDP
      
      batch   pkts/sec
      1       804570
      2       872800 (+ 8 %)
      4       916556 (+14 %)
      8       939712 (+17 %)
      16      952688 (+18 %)
      32      956448 (+19 %)
      64      964800 (+20 %)
      
      64B raw socket
      
      batch   pkts/sec
      1       1201449
      2       1350028 (+12 %)
      4       1461416 (+22 %)
      8       1513080 (+26 %)
      16      1541216 (+28 %)
      32      1553440 (+29 %)
      64      1557888 (+30 %)
      
      We see a 20% improvement in throughput on UDP send and 30%
      on raw socket send.
      
      [ Add sparc syscall entries. -DaveM ]
      Signed-off-by: default avatarAnton Blanchard <anton@samba.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      228e548e
    • Kurt Van Dijck's avatar
      can: fix SJA1000 dlc for RTR packets · 87e9af6c
      Kurt Van Dijck authored
      
      
      RTR frames do have a valid data length code on CAN.
      The driver for SJA1000 did not handle that situation properly.
      Signed-off-by: default avatarKurt Van Dijck <kurt.van.dijck@eia.be>
      Acked-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      87e9af6c
    • Jiri Pirko's avatar
      net: call dev_alloc_name from register_netdevice · 1c5cae81
      Jiri Pirko authored
      Force dev_alloc_name() to be called from register_netdevice() by
      dev_get_valid_name(). That allows to remove multiple explicit
      dev_alloc_name() calls.
      
      The possibility to call dev_alloc_name in advance remains.
      
      This also fixes veth creation regresion caused by
      84c49d8c
      
      Signed-off-by: default avatarJiri Pirko <jpirko@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      1c5cae81
    • Dmitry Kravkov's avatar
    • Dmitry Kravkov's avatar
    • Dmitry Kravkov's avatar
    • Dmitry Kravkov's avatar
    • Dmitry Kravkov's avatar
    • Vladislav Zolotarov's avatar
      bnx2x: link report improvements · 2ae17f66
      Vladislav Zolotarov authored
      
      
      To avoid link notification duplication
      Signed-off-by: default avatarDmitry Kravkov <dmitry@broadcom.com>
      Signed-off-by: default avatarVladislav Zolotarov <vladz@broadcom.com>
      Signed-off-by: default avatarEilon Greenstein <eilong@broadcom.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2ae17f66
    • Giuseppe CAVALLARO's avatar
    • Ming Lei's avatar
      usbnet: runtime pm: fix out of memory · 75bd0cbd
      Ming Lei authored
      
      
      This patch makes use of the EVENT_DEV_OPEN flag introduced recently to
      fix one out of memory issue, which can be reproduced on omap3/4 based
      pandaboard/beagle XM easily with steps below:
      
      	- enable runtime pm
      	echo auto > /sys/devices/platform/usbhs-omap.0/ehci-omap.0/usb1/1-1/1-1.1/power/control
      
      	- ifconfig eth0 up
      
      	- then out of memroy happened, see [1] for kernel message.
      
      Follows my analysis:
      	- 'ifconfig eth0 up' brings eth0 out of suspend, and usbnet_resume
      	is called to schedule dev->bh, then rx urbs are submited to prepare for
      	recieving data;
      
      	- some usbnet devices will produce garbage rx packets flood if
      	info->reset is not called in usbnet_open.
      
      	- so there is no enough chances for usbnet_bh to handle and release
      	recieved skb buffers since many rx interrupts consumes cpu, so out of memory
      	for atomic allocation in rx_submit happened.
      
      This patch fixes the issue by simply not allowing schedule of usbnet_bh until device
      is opened.
      
      [1], dmesg
      [  234.712005] smsc95xx 1-1.1:1.0: rpm_resume flags 0x4
      [  234.712066] usb 1-1.1: rpm_resume flags 0x0
      [  234.712066] usb 1-1: rpm_resume flags 0x0
      [  234.712097] usb usb1: rpm_resume flags 0x0
      [  234.712127] usb usb1: usb auto-resume
      [  234.712158] ehci-omap ehci-omap.0: resume root hub
      [  234.754028] hub 1-0:1.0: hub_resume
      [  234.754821] hub 1-0:1.0: port 1: status 0507 change 0000
      [  234.756011] hub 1-0:1.0: state 7 ports 3 chg 0000 evt 0000
      [  234.756042] hub 1-0:1.0: rpm_resume flags 0x4
      [  234.756072] usb usb1: rpm_resume flags 0x0
      [  234.756164] usb usb1: rpm_resume returns 1
      [  234.756195] hub 1-0:1.0: rpm_resume returns 0
      [  234.756195] hub 1-0:1.0: rpm_suspend flags 0x4
      [  234.756225] hub 1-0:1.0: rpm_suspend returns 0
      [  234.756256] usb usb1: rpm_resume returns 0
      [  234.757141] usb 1-1: usb auto-resume
      [  234.793151] ehci-omap ehci-omap.0: GetStatus port:1 status 001005 0  ACK POWER sig=se0 PE CONNECT
      [  234.816558] usb 1-1: finish resume
      [  234.817871] hub 1-1:1.0: hub_resume
      [  234.818420] hub 1-1:1.0: port 1: status 0507 change 0000
      [  234.820495] ehci-omap ehci-omap.0: reused qh eec50220 schedule
      [  234.820495] usb 1-1: link qh256-0001/eec50220 start 1 [1/0 us]
      [  234.820587] usb 1-1: rpm_resume returns 0
      [  234.820800] hub 1-1:1.0: state 7 ports 5 chg 0000 evt 0000
      [  234.820800] hub 1-1:1.0: rpm_resume flags 0x4
      [  234.820831] hub 1-1:1.0: rpm_resume returns 0
      [  234.820861] hub 1-1:1.0: rpm_suspend flags 0x4
      [  234.820861] hub 1-1:1.0: rpm_suspend returns 0
      [  234.821777] usb 1-1.1: usb auto-resume
      [  234.868591] hub 1-1:1.0: state 7 ports 5 chg 0000 evt 0002
      [  234.868591] hub 1-1:1.0: rpm_resume flags 0x4
      [  234.868621] hub 1-1:1.0: rpm_resume returns 0
      [  234.868652] hub 1-1:1.0: rpm_suspend flags 0x4
      [  234.868652] hub 1-1:1.0: rpm_suspend returns 0
      [  234.879486] usb 1-1.1: finish resume
      [  234.880279] usb 1-1.1: rpm_resume returns 0
      [  234.880310] smsc95xx 1-1.1:1.0: rpm_resume returns 0
      [  238.880187] ksoftirqd/0: page allocation failure. order:0, mode:0x20
      [  238.880218] Backtrace:
      [  238.880249] [<c01b9800>] (dump_backtrace+0x0/0xf8) from [<c065e1dc>] (dump_stack+0x18/0x1c)
      [  238.880249]  r6:00000000 r5:00000000 r4:00000020 r3:00000002
      [  238.880310] [<c065e1c4>] (dump_stack+0x0/0x1c) from [<c026ece4>] (__alloc_pages_nodemask+0x620/0x724)
      [  238.880340] [<c026e6c4>] (__alloc_pages_nodemask+0x0/0x724) from [<c02986d4>] (kmem_getpages.clone.34+0x34/0xc8)
      [  238.880371] [<c02986a0>] (kmem_getpages.clone.34+0x0/0xc8) from [<c02988f8>] (cache_grow.clone.42+0x84/0x154)
      [  238.880371]  r6:ef871aa4 r5:ef871a80 r4:ef81fd40 r3:00000020
      [  238.880401] [<c0298874>] (cache_grow.clone.42+0x0/0x154) from [<c0298b64>] (cache_alloc_refill+0x19c/0x1f0)
      [  238.880432] [<c02989c8>] (cache_alloc_refill+0x0/0x1f0) from [<c0299804>] (kmem_cache_alloc+0x90/0x190)
      [  238.880462] [<c0299774>] (kmem_cache_alloc+0x0/0x190) from [<c052e260>] (__alloc_skb+0x34/0xe8)
      [  238.880493] [<c052e22c>] (__alloc_skb+0x0/0xe8) from [<bf0509f4>] (rx_submit+0x2c/0x1d4 [usbnet])
      [  238.880523] [<bf0509c8>] (rx_submit+0x0/0x1d4 [usbnet]) from [<bf050d38>] (rx_complete+0x19c/0x1b0 [usbnet])
      [  238.880737] [<bf050b9c>] (rx_complete+0x0/0x1b0 [usbnet]) from [<bf006fd0>] (usb_hcd_giveback_urb+0xa8/0xf4 [usbcore])
      [  238.880737]  r8:eeeced34 r7:eeecec00 r6:eeecec00 r5:00000000 r4:eec2dd20
      [  238.880767] r3:bf050b9c
      [  238.880859] [<bf006f28>] (usb_hcd_giveback_urb+0x0/0xf4 [usbcore]) from [<bf03c8f8>] (ehci_urb_done+0xb0/0xbc [ehci_hcd])
      [  238.880859]  r6:00000000 r5:eec2dd20 r4:eeeced44 r3:eec2dd34
      [  238.880920] [<bf03c848>] (ehci_urb_done+0x0/0xbc [ehci_hcd]) from [<bf040204>] (qh_completions+0x308/0x3bc [ehci_hcd])
      [  238.880920]  r7:00000000 r6:eeda21a0 r5:ffdfe3c0 r4:eeda21ac
      [  238.880981] [<bf03fefc>] (qh_completions+0x0/0x3bc [ehci_hcd]) from [<bf040ef8>] (scan_async+0xb0/0x16c [ehci_hcd])
      [  238.881011] [<bf040e48>] (scan_async+0x0/0x16c [ehci_hcd]) from [<bf040fec>] (ehci_work+0x38/0x90 [ehci_hcd])
      [  238.881042] [<bf040fb4>] (ehci_work+0x0/0x90 [ehci_hcd]) from [<bf042940>] (ehci_irq+0x300/0x34c [ehci_hcd])
      [  238.881072]  r4:eeeced34 r3:00000001
      [  238.881134] [<bf042640>] (ehci_irq+0x0/0x34c [ehci_hcd]) from [<bf006828>] (usb_hcd_irq+0x40/0xac [usbcore])
      [  238.881195] [<bf0067e8>] (usb_hcd_irq+0x0/0xac [usbcore]) from [<c0239764>] (handle_irq_event_percpu+0xb8/0x240)
      [  238.881225]  r6:eec504e0 r5:0000006d r4:eec504e0 r3:bf0067e8
      [  238.881256] [<c02396ac>] (handle_irq_event_percpu+0x0/0x240) from [<c0239930>] (handle_irq_event+0x44/0x64)
      [  238.881256] [<c02398ec>] (handle_irq_event+0x0/0x64) from [<c023bbd0>] (handle_level_irq+0xe0/0x114)
      [  238.881286]  r6:0000006d r5:c080c14c r4:c080c100 r3:00020000
      [  238.881317] [<c023baf0>] (handle_level_irq+0x0/0x114) from [<c01ab090>] (asm_do_IRQ+0x90/0xd0)
      [  238.881317]  r5:00000000 r4:0000006d
      [  238.881347] [<c01ab000>] (asm_do_IRQ+0x0/0xd0) from [<c06624d0>] (__irq_svc+0x50/0x134)
      [  238.881378] Exception stack(0xef837e20 to 0xef837e68)
      [  238.881378] 7e20: 00000001 00185610 016cc000 c00490c0 eb380000 ef800540 00000020 00004ae0
      [  238.881408] 7e40: 00000020 bf0509f4 60000013 ef837e9c ef837e40 ef837e68 c0226f0c c0298ca0
      [  238.881408] 7e60: 20000013 ffffffff
      [  238.881408]  r5:fa240100 r4:ffffffff
      [  238.881439] [<c0298bb8>] (__kmalloc_track_caller+0x0/0x1d0) from [<c052e284>] (__alloc_skb+0x58/0xe8)
      [  238.881469] [<c052e22c>] (__alloc_skb+0x0/0xe8) from [<bf0509f4>] (rx_submit+0x2c/0x1d4 [usbnet])
      [  238.881500] [<bf0509c8>] (rx_submit+0x0/0x1d4 [usbnet]) from [<bf0513d8>] (usbnet_bh+0x1b4/0x250 [usbnet])
      [  238.881530] [<bf051224>] (usbnet_bh+0x0/0x250 [usbnet]) from [<c01f912c>] (tasklet_action+0xb0/0x1f8)
      [  238.881530]  r6:00000000 r5:ef9757f0 r4:ef9757ec r3:bf051224
      [  238.881561] [<c01f907c>] (tasklet_action+0x0/0x1f8) from [<c01f97ac>] (__do_softirq+0x140/0x290)
      [  238.881561]  r8:00000006 r7:00000101 r6:00000000 r5:c0806098 r4:00000001
      [  238.881591] r3:c01f907c
      [  238.881622] [<c01f966c>] (__do_softirq+0x0/0x290) from [<c01f99cc>] (run_ksoftirqd+0xd0/0x1f4)
      [  238.881622] [<c01f98fc>] (run_ksoftirqd+0x0/0x1f4) from [<c02113b0>] (kthread+0x90/0x98)
      [  238.881652]  r7:00000013 r6:c01f98fc r5:00000000 r4:ef831efc
      [  238.881683] [<c0211320>] (kthread+0x0/0x98) from [<c01f62f4>] (do_exit+0x0/0x374)
      [  238.881713]  r6:c01f62f4 r5:c0211320 r4:ef831efc
      [  238.881713] Mem-info:
      [  238.881744] Normal per-cpu:
      [  238.881744] CPU    0: hi:  186, btch:  31 usd:  38
      [  238.881744] CPU    1: hi:  186, btch:  31 usd: 169
      [  238.881774] HighMem per-cpu:
      [  238.881774] CPU    0: hi:   90, btch:  15 usd:  66
      [  238.881774] CPU    1: hi:   90, btch:  15 usd:  86
      [  238.881805] active_anon:544 inactive_anon:71 isolated_anon:0
      [  238.881805]  active_file:926 inactive_file:2538 isolated_file:0
      [  238.881805]  unevictable:0 dirty:10 writeback:0 unstable:0
      [  238.881805]  free:57782 slab_reclaimable:864 slab_unreclaimable:186898
      [  238.881805]  mapped:632 shmem:144 pagetables:50 bounce:0
      [  238.881835] Normal free:1328kB min:3532kB low:4412kB high:5296kB active_anon:0kB inactive_anon:0kB active_file:880kB inactive_file:848kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:780288kB mlocked:0kB dirty:36kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:3456kB slab_unreclaimable:747592kB kernel_stack:392kB pagetables:200kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
      [  238.881866] lowmem_reserve[]: 0 1904 1904
      [  238.881896] HighMem free:229800kB min:236kB low:508kB high:784kB active_anon:2176kB inactive_anon:284kB active_file:2824kB inactive_file:9304kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:243712kB mlocked:0kB dirty:4kB writeback:0kB mapped:2528kB shmem:576kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
      [  238.881927] lowmem_reserve[]: 0 0 0
      [  238.881958] Normal: 0*4kB 4*8kB 6*16kB 0*32kB 1*64kB 1*128kB 0*256kB 2*512kB 0*1024kB 0*2048kB 0*4096kB = 1344kB
      [  238.882019] HighMem: 6*4kB 2*8kB 4*16kB 4*32kB 1*64kB 1*128kB 0*256kB 2*512kB 3*1024kB 0*2048kB 55*4096kB = 229800kB
      [  238.882080] 3610 total pagecache pages
      [  238.882080] 0 pages in swap cache
      [  238.882080] Swap cache stats: add 0, delete 0, find 0/0
      [  238.882110] Free swap  = 0kB
      [  238.882110] Total swap = 0kB
      [  238.933776] 262144 pages of RAM
      [  238.933776] 58240 free pages
      [  238.933776] 10503 reserved pages
      [  238.933776] 187773 slab pages
      [  238.933807] 2475 pages shared
      [  238.933807] 0 pages swap cached
      Signed-off-by: default avatarMing Lei <tom.leiming@gmail.com>
      Acked-by: default avatarOliver Neukum <oneukum@suse.de>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      75bd0cbd
    • John W. Linville's avatar
      Merge branch 'master' of... · a70171dc
      John W. Linville authored
      Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
      
      Conflicts:
      	drivers/net/wireless/libertas/if_cs.c
      	drivers/net/wireless/rtlwifi/pci.c
      	net/bluetooth/l2cap_sock.c
      a70171dc
    • Mohammed Shafi Shajakhan's avatar
      mac80211: Fix a warning due to skipping tailroom reservation for IV · eaef6a93
      Mohammed Shafi Shajakhan authored
      
      
      The devices that require IV generation in software need tailroom
      reservation  for ICVs used in TKIP or WEP encryptions.
      Currently, decision to skip the tailroom reservation in the tx
      path was taken only on whether driver wants MMIC to be generated
      in software or not. Following patch appends IV generation check for
      such decisions and fixes the following warning.
      
      WARNING: at net/mac80211/wep.c:101 ieee80211_wep_add_iv+0x56/0xf3()
      Hardware name: 64756D6
      Modules linked in: ath9k ath9k_common ath9k_hw
      Pid: 0, comm: swapper Tainted: G        W   2.6.39-rc5-wl
       Call Trace:
      [<c102fd29>] warn_slowpath_common+0x65/0x7a
      [<c1465c4e>] ? ieee80211_wep_add_iv+0x56/0xf3
      [<c102fd4d>] warn_slowpath_null+0xf/0x13
      [<c1465c4e>] ieee80211_wep_add_iv+0x56/0xf3
      [<c1466007>] ieee80211_crypto_wep_encrypt+0x63/0x88
      [<c1478bf3>] ieee80211_tx_h_encrypt+0x2f/0x63
      [<c1478cba>] invoke_tx_handlers+0x93/0xe1
      [<c1478eda>] ieee80211_tx+0x4b/0x6d
      [<c147907c>] ieee80211_xmit+0x180/0x188
      [<c147779d>] ? ieee80211_skb_resize+0x95/0xd9
      [<c1479edf>] ieee80211_subif_start_xmit+0x64f/0x668
      [<c13956fc>] dev_hard_start_xmit+0x368/0x48c
      [<c13a8bd6>] sch_direct_xmit+0x4d/0x101
      [<c1395ae1>] dev_queue_xmit+0x2c1/0x43f
      [<c13a74a2>] ? eth_header+0x1e/0x90
      [<c13a7400>] ? eth_type_trans+0x91/0xc2
      [<c13a7484>] ? eth_rebuild_header+0x53/0x53
      [<c139f079>] neigh_resolve_output+0x223/0x27e
      [<c13c6b23>] ip_finish_output2+0x1d4/0x1fe
      [<c13c6bc6>] ip_finish_output+0x79/0x7d
      [<c13c6cbe>] T.1075+0x43/0x48
      [<c13c6e6e>] ip_output+0x75/0x7b
      [<c13c4970>] dst_output+0xc/0xe
      [<c13c62c9>] ip_local_out+0x17/0x1a
      [<c13c67bb>] ip_queue_xmit+0x2aa/0x2f8
      [<c138b742>] ? sk_setup_caps+0x21/0x92
      [<c13d95ea>] ? __tcp_v4_send_check+0x7e/0xb7
      [<c13d5d2e>] tcp_transmit_skb+0x6a1/0x6d7
      [<c13d533b>] ? tcp_established_options+0x20/0x8b
      [<c13d6f28>] tcp_retransmit_skb+0x43a/0x527
      [<c13d8d6d>] tcp_retransmit_timer+0x32e/0x45d
      [<c13d8f23>] tcp_write_timer+0x87/0x16c
      [<c103a030>] run_timer_softirq+0x156/0x1f9
      [<c13d8e9c>] ? tcp_retransmit_timer+0x45d/0x45d
      [<c1034d65>] __do_softirq+0x97/0x14a
      [<c1034cce>] ? irq_enter+0x4d/0x4d
      
      Cc: Yogesh Powar <yogeshp@marvell.com>
      Reported-by: default avatarFabio Rossi <rossi.f@inwind.it>
      Tested-by: default avatarFabio Rossi <rossi.f@inwind.it>
      Signed-off-by: default avatarMohammed Shafi Shajakhan <mshajakhan@atheros.com>
      Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
      eaef6a93
  5. 04 May, 2011 10 commits