1. 15 Aug, 2013 10 commits
  2. 14 Aug, 2013 1 commit
    • Hannes Frederic Sowa's avatar
      ipv6: make unsolicited report intervals configurable for mld · fc4eba58
      Hannes Frederic Sowa authored
      Commit cab70040 ("net: igmp:
      Reduce Unsolicited report interval to 1s when using IGMPv3") and
      2690048c ("net: igmp: Allow user-space
      configuration of igmp unsolicited report interval") by William Manley made
      igmp unsolicited report intervals configurable per interface and corrected
      the interval of unsolicited igmpv3 report messages resendings to 1s.
      Same needs to be done for IPv6:
      MLDv1 (RFC2710 7.10.): 10 seconds
      MLDv2 (RFC3810 9.11.): 1 second
      Both intervals are configurable via new procfs knobs
      mldv1_unsolicited_report_interval and mldv2_unsolicited_report_interval.
      (also added .force_mld_version to ipv6_devconf_dflt to bring structs in
      line without semantic changes)
      a) Joined documentation update for IPv4 and IPv6 MLD/IGMP
         unsolicited_report_interval procfs knobs.
      b) incorporate stylistic feedback from William Manley
      a) add new DEVCONF_* values to the end of the enum (thanks to David
      Cc: Cong Wang <xiyou.wangcong@gmail.com>
      Cc: William Manley <william.manley@youview.com>
      Cc: Benjamin LaHaise <bcrl@kvack.org>
      Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
      Signed-off-by: default avatarHannes Frederic Sowa <hannes@stressinduktion.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
  3. 13 Aug, 2013 8 commits
    • Yuchung Cheng's avatar
      tcp: reset reordering est. selectively on timeout · 74c181d5
      Yuchung Cheng authored
      On timeout the TCP sender unconditionally resets the estimated degree
      of network reordering (tp->reordering). The idea behind this is that
      the estimate is too large to trigger fast recovery (e.g., due to a IP
      path change).
      But for example if the sender only had 2 packets outstanding, then a
      timeout doesn't tell much about reordering. A sender that learns about
      reordering on big writes and loses packets on small writes will end up
      falsely retransmitting again and again, especially when reordering is
      more likely on big writes.
      Therefore the sender should only suspect that tp->reordering is too
      high if it could have gone into fast recovery with the (lower) default
      Signed-off-by: default avatarYuchung Cheng <ycheng@google.com>
      Acked-by: default avatarNeal Cardwell <ncardwell@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • David S. Miller's avatar
      Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next · 98f1b7f3
      David S. Miller authored
      John W. Linville says:
      This is a batch of updates intended for 3.12.  It is mostly driver
      stuff, although Johannes Berg and Simon Wunderlich make a good
      showing with mac80211 bits (particularly some work on 5/10 MHz
      channel support).
      The usual suspects are mostly represented.  There are lots of updates
      to iwlwifi, ath9k, ath10k, mwifiex, rt2x00, wil6210, as usual.
      The bcma bus gets some love this time, as do cw1200, iwl4965, and a
      few other bits here and there.  I don't think there is much unusual
      here, FWIW.
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Mugunthan V N's avatar
      drivers: net: cpsw: Add support for new CPSW IP version present in AM43xx SoC · 926489be
      Mugunthan V N authored
      The new IP version which is present in AM43xx SoC has a minor changes and the
      offsets are same as the previous version, so adding new IP version support in
      the driver.
      Signed-off-by: default avatarMugunthan V N <mugunthanvnm@ti.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Claudiu Manoil's avatar
      gianfar: Add flow control support · 23402bdd
      Claudiu Manoil authored
      eTSEC has Rx and Tx flow control capabilities that may be enabled
      through MACCFG1[Rx_Flow, Tx_Flow] bits.  These bits must not be set
      however when eTSEC is operated in Half-Duplex mode.  Unfortunately,
      the driver currently sets these bits unconditionally.
      This patch adds the proper handling of the PAUSE frame capability
      register bits by implementing the ethtool -A interface.  When pause
      autoneg is enabled, the controller uses the phy's capability to
      negotiate PAUSE frame settings with the link partner and reconfigures
      its Rx_Flow and Tx_Flow settings to match the capabilities of the
      link partner.  If pause autoneg is off, the PAUSE frame generation
      may be forced manually (ethtool -A).  Flow control is disabled by
      default now.
      This implementation is inspired by the tg3 driver.
      Signed-off-by: default avatarLutz Jaenicke <ljaenicke@innominate.com>
      Signed-off-by: default avatarClaudiu Manoil <claudiu.manoil@freescale.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • stephen hemminger's avatar
      pptp: fix byte order warnings · ebd8b934
      stephen hemminger authored
      Pptp driver has lots of byte order warnings from sparse.
      This was because the on-the-wire header is in network byte order (obviously)
      but the definition did not reflect that.
      Also, the address structure to user space actually put the call id
      in host order. Rather than break ABI compatibility, just acknowledge
      the existing design.
      Signed-off-by: default avatarStephen Hemminger <stephen@networkplumber.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Vlad Yasevich's avatar
      net: sctp: Add rudimentary infrastructure to account for control chunks · 072017b4
      Vlad Yasevich authored
      This patch adds a base infrastructure that allows SCTP to do
      memory accounting for control chunks.  Real accounting code will
      This patch alos fixes the following triggered bug ...
      [  553.109742] kernel BUG at include/linux/skbuff.h:1813!
      [  553.109766] invalid opcode: 0000 [#1] SMP
      [  553.109789] Modules linked in: sctp libcrc32c rfcomm [...]
      [  553.110259]  uinput i915 i2c_algo_bit drm_kms_helper e1000e drm ptp
      pps_core i2c_core wmi video sunrpc
      [  553.110320] CPU: 0 PID: 1636 Comm: lt-test_1_to_1_ Not tainted
      3.11.0-rc3+ #2
      [  553.110350] Hardware name: LENOVO 74597D6/74597D6, BIOS 6DET60WW
      (3.10 ) 09/17/2009
      [  553.110381] task: ffff88020a01dd40 ti: ffff880204ed0000 task.ti:
      [  553.110411] RIP: 0010:[<ffffffffa0698017>]  [<ffffffffa0698017>]
      skb_orphan.part.9+0x4/0x6 [sctp]
      [  553.110459] RSP: 0018:ffff880204ed1bb8  EFLAGS: 00010286
      [  553.110483] RAX: ffff8802086f5a40 RBX: ffff880204303300 RCX:
      [  553.110487] RDX: ffff880204303c28 RSI: ffff8802086f5a40 RDI:
      [  553.110487] RBP: ffff880204ed1bb8 R08: 0000000000000000 R09:
      [  553.110487] R10: ffff88022f2d9a04 R11: ffff880233001600 R12:
      [  553.110487] R13: ffff880204303c00 R14: ffff8802293d0000 R15:
      [  553.110487] FS:  00007f31b31fe740(0000) GS:ffff88023bc00000(0000)
      [  553.110487] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
      [  553.110487] CR2: 000000379980e3e0 CR3: 000000020d225000 CR4:
      [  553.110487] Stack:
      [  553.110487]  ffff880204ed1ca8 ffffffffa068d7fc 0000000000000000
      [  553.110487]  0000000000000000 ffff8802293d0000 ffff880202158000
      [  553.110487]  0000000000000000 0000400000001c68 ffff8802086f5a40
      [  553.110487] Call Trace:
      [  553.110487]  [<ffffffffa068d7fc>] sctp_sendmsg+0x6bc/0xc80 [sctp]
      [  553.110487]  [<ffffffff8128f185>] ? sock_has_perm+0x75/0x90
      [  553.110487]  [<ffffffff815a3593>] inet_sendmsg+0x63/0xb0
      [  553.110487]  [<ffffffff8128f2b3>] ? selinux_socket_sendmsg+0x23/0x30
      [  553.110487]  [<ffffffff8151c5d6>] sock_sendmsg+0xa6/0xd0
      [  553.110487]  [<ffffffff81637b05>] ? _raw_spin_unlock_bh+0x15/0x20
      [  553.110487]  [<ffffffff8151cd38>] SYSC_sendto+0x128/0x180
      [  553.110487]  [<ffffffff8151ce6b>] ? SYSC_connect+0xdb/0x100
      [  553.110487]  [<ffffffffa0690031>] ? sctp_inet_listen+0x71/0x1f0
      [  553.110487]  [<ffffffff8151d35e>] SyS_sendto+0xe/0x10
      [  553.110487]  [<ffffffff81640202>] system_call_fastpath+0x16/0x1b
      [  553.110487] Code: e0 48 c7 c7 00 22 6a a0 e8 67 a3 f0 e0 48 c7 [...]
      [  553.110487] RIP  [<ffffffffa0698017>] skb_orphan.part.9+0x4/0x6
      [  553.110487]  RSP <ffff880204ed1bb8>
      [  553.121578] ---[ end trace 46c20c5903ef5be2 ]---
      The approach taken here is to split data and control chunks
      creation a  bit.  Data chunks already have memory accounting
      so noting needs to happen.  For control chunks, add stubs handlers.
      Signed-off-by: default avatarVlad Yasevich <vyasevich@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Mark Brown's avatar
      net: asix: Move declaration of ax88172a_info to shared header · 55d10a11
      Mark Brown authored
      Ensure that the definition of ax88172a_info matches the declaration seen
      by users and silence sparse warnings about symbols without declarations
      in the global namespace by moving the declaration into the shared header
      Signed-off-by: default avatarMark Brown <broonie@linaro.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Mark Brown's avatar
      net: asix: Staticise non-exported symbols · cbeee8c6
      Mark Brown authored
      Make functions that are only referenced from ops structures static, they
      do not need to be in the global namespace and sparse complains about this.
      Signed-off-by: default avatarMark Brown <broonie@linaro.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
  4. 12 Aug, 2013 4 commits
  5. 10 Aug, 2013 3 commits
    • Eric Dumazet's avatar
      net: attempt high order allocations in sock_alloc_send_pskb() · 28d64271
      Eric Dumazet authored
      Adding paged frags skbs to af_unix sockets introduced a performance
      regression on large sends because of additional page allocations, even
      if each skb could carry at least 100% more payload than before.
      We can instruct sock_alloc_send_pskb() to attempt high order
      Most of the time, it does a single page allocation instead of 8.
      I added an additional parameter to sock_alloc_send_pskb() to
      let other users to opt-in for this new feature on followup patches.
      Before patch :
      $ netperf -t STREAM_STREAM
      Recv   Send    Send
      Socket Socket  Message  Elapsed
      Size   Size    Size     Time     Throughput
      bytes  bytes   bytes    secs.    10^6bits/sec
       2304  212992  212992    10.00    46861.15
      After patch :
      $ netperf -t STREAM_STREAM
      Recv   Send    Send
      Socket Socket  Message  Elapsed
      Size   Size    Size     Time     Throughput
      bytes  bytes   bytes    secs.    10^6bits/sec
       2304  212992  212992    10.00    57981.11
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Cc: David Rientjes <rientjes@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Eric Dumazet's avatar
      af_unix: improve STREAM behavior with fragmented memory · e370a723
      Eric Dumazet authored
      unix_stream_sendmsg() currently uses order-2 allocations,
      and we had numerous reports this can fail.
      The __GFP_REPEAT flag present in sock_alloc_send_pskb() is
      not helping.
      This patch extends the work done in commit eb6a2481
      ("af_unix: reduce high order page allocations) for
      datagram sockets.
      This opens the possibility of zero copy IO (splice() and
      The trick is to not use skb_pull() anymore in recvmsg() path,
      and instead add a @consumed field in UNIXCB() to track amount
      of already read payload in the skb.
      There is a performance regression for large sends
      because of extra page allocations that will be addressed
      in a follow-up patch, allowing sock_alloc_send_pskb()
      to attempt high order page allocations.
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Cc: David Rientjes <rientjes@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Yuchung Cheng's avatar
      tcp: add server ip to encrypt cookie in fast open · 149479d0
      Yuchung Cheng authored
      Encrypt the cookie with both server and client IPv4 addresses,
      such that multi-homed server will grant different cookies
      based on both the source and destination IPs. No client change
      is needed since cookie is opaque to the client.
      Signed-off-by: default avatarYuchung Cheng <ycheng@google.com>
      Reviewed-by: default avatarEric Dumazet <edumazet@google.com>
      Acked-by: default avatarNeal Cardwell <ncardwell@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
  6. 09 Aug, 2013 14 commits