1. 20 Oct, 2016 18 commits
    • David S. Miller's avatar
      Merge branch 'MTU-core-range-checking-more' · 9e58c5dc
      David S. Miller authored
      Jarod Wilson says:
      
      ====================
      net: use core MTU range checking everywhere
      
      This stack of patches should get absolutely everything in the kernel
      converted from doing their own MTU range checking to the core MTU range
      checking. This second spin includes alterations to hopefully fix all
      concerns raised with the first, as well as including some additional
      changes to drivers and infrastructure where I completely missed necessary
      updates.
      
      These have all been built through the 0-day build infrastructure via the
      (rebasing) master branch at https://github.com/jarodwilson/linux-muck, which
      at the time of the most recent compile across 147 configs, was based on
      net-next at commit 7b1536ef.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      9e58c5dc
    • Jarod Wilson's avatar
      ipv4/6: use core net MTU range checking · b96f9afe
      Jarod Wilson authored
      ipv4/ip_tunnel:
      - min_mtu = 68, max_mtu = 0xFFF8 - dev->hard_header_len - t_hlen
      - preserve all ndo_change_mtu checks for now to prevent regressions
      
      ipv6/ip6_tunnel:
      - min_mtu = 68, max_mtu = 0xFFF8 - dev->hard_header_len
      - preserve all ndo_change_mtu checks for now to prevent regressions
      
      ipv6/ip6_vti:
      - min_mtu = 1280, max_mtu = 65535
      - remove redundant vti6_change_mtu
      
      ipv6/sit:
      - min_mtu = 1280, max_mtu = 0xFFF8 - t_hlen
      - remove redundant ipip6_tunnel_change_mtu
      
      CC: netdev@vger.kernel.org
      CC: "David S. Miller" <davem@davemloft.net>
      CC: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
      CC: James Morris <jmorris@namei.org>
      CC: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
      CC: Patrick McHardy <kaber@trash.net>
      Signed-off-by: default avatarJarod Wilson <jarod@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b96f9afe
    • Jarod Wilson's avatar
      s390/net: use net core MTU range checking · 46b3ef4c
      Jarod Wilson authored
      ctcm:
      - min_mtu = 576, max_mtu = 65527
      
      netiucv:
      - min_mtu = 576, max_mtu = 65535
      
      qeth:
      - min_mtu = 64, max_mtu = 65535
      
      CC: netdev@vger.kernel.org
      CC: linux-s390@vger.kernel.org
      CC: Ursula Braun <ubraun@linux.vnet.ibm.com>
      Signed-off-by: default avatarJarod Wilson <jarod@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      46b3ef4c
    • Jarod Wilson's avatar
      net: use core MTU range checking in misc drivers · b3e3893e
      Jarod Wilson authored
      firewire-net:
      - set min/max_mtu
      - remove fwnet_change_mtu
      
      nes:
      - set max_mtu
      - clean up nes_netdev_change_mtu
      
      xpnet:
      - set min/max_mtu
      - remove xpnet_dev_change_mtu
      
      hippi:
      - set min/max_mtu
      - remove hippi_change_mtu
      
      batman-adv:
      - set max_mtu
      - remove batadv_interface_change_mtu
      - initialization is a little async, not 100% certain that max_mtu is set
        in the optimal place, don't have hardware to test with
      
      rionet:
      - set min/max_mtu
      - remove rionet_change_mtu
      
      slip:
      - set min/max_mtu
      - streamline sl_change_mtu
      
      um/net_kern:
      - remove pointless ndo_change_mtu
      
      hsi/clients/ssi_protocol:
      - use core MTU range checking
      - remove now redundant ssip_pn_set_mtu
      
      ipoib:
      - set a default max MTU value
      - Note: ipoib's actual max MTU can vary, depending on if the device is in
        connected mode or not, so we'll just set the max_mtu value to the max
        possible, and let the ndo_change_mtu function continue to validate any new
        MTU change requests with checks for CM or not. Note that ipoib has no
        min_mtu set, and thus, the network core's mtu > 0 check is the only lower
        bounds here.
      
      mptlan:
      - use net core MTU range checking
      - remove now redundant mpt_lan_change_mtu
      
      fddi:
      - min_mtu = 21, max_mtu = 4470
      - remove now redundant fddi_change_mtu (including export)
      
      fjes:
      - min_mtu = 8192, max_mtu = 65536
      - The max_mtu value is actually one over IP_MAX_MTU here, but the idea is to
        get past the core net MTU range checks so fjes_change_mtu can validate a
        new MTU against what it supports (see fjes_support_mtu in fjes_hw.c)
      
      hsr:
      - min_mtu = 0 (calls ether_setup, max_mtu is 1500)
      
      f_phonet:
      - min_mtu = 6, max_mtu = 65541
      
      u_ether:
      - min_mtu = 14, max_mtu = 15412
      
      phonet/pep-gprs:
      - min_mtu = 576, max_mtu = 65530
      - remove redundant gprs_set_mtu
      
      CC: netdev@vger.kernel.org
      CC: linux-rdma@vger.kernel.org
      CC: Stefan Richter <stefanr@s5r6.in-berlin.de>
      CC: Faisal Latif <faisal.latif@intel.com>
      CC: linux-rdma@vger.kernel.org
      CC: Cliff Whickman <cpw@sgi.com>
      CC: Robin Holt <robinmholt@gmail.com>
      CC: Jes Sorensen <jes@trained-monkey.org>
      CC: Marek Lindner <mareklindner@neomailbox.ch>
      CC: Simon Wunderlich <sw@simonwunderlich.de>
      CC: Antonio Quartulli <a@unstable.cc>
      CC: Sathya Prakash <sathya.prakash@broadcom.com>
      CC: Chaitra P B <chaitra.basappa@broadcom.com>
      CC: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com>
      CC: MPT-FusionLinux.pdl@broadcom.com
      CC: Sebastian Reichel <sre@kernel.org>
      CC: Felipe Balbi <balbi@kernel.org>
      CC: Arvid Brodin <arvid.brodin@alten.se>
      CC: Remi Denis-Courmont <courmisch@gmail.com>
      Signed-off-by: default avatarJarod Wilson <jarod@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b3e3893e
    • Jarod Wilson's avatar
      net: use core MTU range checking in virt drivers · d0c2c997
      Jarod Wilson authored
      hyperv_net:
      - set min/max_mtu, per Haiyang, after rndis_filter_device_add
      
      virtio_net:
      - set min/max_mtu
      - remove virtnet_change_mtu
      
      vmxnet3:
      - set min/max_mtu
      
      xen-netback:
      - min_mtu = 0, max_mtu = 65517
      
      xen-netfront:
      - min_mtu = 0, max_mtu = 65535
      
      unisys/visor:
      - clean up defines a little to not clash with network core or add
        redundat definitions
      
      CC: netdev@vger.kernel.org
      CC: virtualization@lists.linux-foundation.org
      CC: "K. Y. Srinivasan" <kys@microsoft.com>
      CC: Haiyang Zhang <haiyangz@microsoft.com>
      CC: "Michael S. Tsirkin" <mst@redhat.com>
      CC: Shrikrishna Khare <skhare@vmware.com>
      CC: "VMware, Inc." <pv-drivers@vmware.com>
      CC: Wei Liu <wei.liu2@citrix.com>
      CC: Paul Durrant <paul.durrant@citrix.com>
      CC: David Kershner <david.kershner@unisys.com>
      Signed-off-by: default avatarJarod Wilson <jarod@redhat.com>
      Reviewed-by: default avatarHaiyang Zhang <haiyangz@microsoft.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d0c2c997
    • Jarod Wilson's avatar
      net: use core MTU range checking in core net infra · 91572088
      Jarod Wilson authored
      geneve:
      - Merge __geneve_change_mtu back into geneve_change_mtu, set max_mtu
      - This one isn't quite as straight-forward as others, could use some
        closer inspection and testing
      
      macvlan:
      - set min/max_mtu
      
      tun:
      - set min/max_mtu, remove tun_net_change_mtu
      
      vxlan:
      - Merge __vxlan_change_mtu back into vxlan_change_mtu
      - Set max_mtu to IP_MAX_MTU and retain dynamic MTU range checks in
        change_mtu function
      - This one is also not as straight-forward and could use closer inspection
        and testing from vxlan folks
      
      bridge:
      - set max_mtu of IP_MAX_MTU and retain dynamic MTU range checks in
        change_mtu function
      
      openvswitch:
      - set min/max_mtu, remove internal_dev_change_mtu
      - note: max_mtu wasn't checked previously, it's been set to 65535, which
        is the largest possible size supported
      
      sch_teql:
      - set min/max_mtu (note: max_mtu previously unchecked, used max of 65535)
      
      macsec:
      - min_mtu = 0, max_mtu = 65535
      
      macvlan:
      - min_mtu = 0, max_mtu = 65535
      
      ntb_netdev:
      - min_mtu = 0, max_mtu = 65535
      
      veth:
      - min_mtu = 68, max_mtu = 65535
      
      8021q:
      - min_mtu = 0, max_mtu = 65535
      
      CC: netdev@vger.kernel.org
      CC: Nicolas Dichtel <nicolas.dichtel@6wind.com>
      CC: Hannes Frederic Sowa <hannes@stressinduktion.org>
      CC: Tom Herbert <tom@herbertland.com>
      CC: Daniel Borkmann <daniel@iogearbox.net>
      CC: Alexander Duyck <alexander.h.duyck@intel.com>
      CC: Paolo Abeni <pabeni@redhat.com>
      CC: Jiri Benc <jbenc@redhat.com>
      CC: WANG Cong <xiyou.wangcong@gmail.com>
      CC: Roopa Prabhu <roopa@cumulusnetworks.com>
      CC: Pravin B Shelar <pshelar@ovn.org>
      CC: Sabrina Dubroca <sd@queasysnail.net>
      CC: Patrick McHardy <kaber@trash.net>
      CC: Stephen Hemminger <stephen@networkplumber.org>
      CC: Pravin Shelar <pshelar@nicira.com>
      CC: Maxim Krasnyansky <maxk@qti.qualcomm.com>
      Signed-off-by: default avatarJarod Wilson <jarod@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      91572088
    • Jarod Wilson's avatar
      net: use core MTU range checking in WAN drivers · 8b6b4135
      Jarod Wilson authored
      - set min/max_mtu in all hdlc drivers, remove hdlc_change_mtu
      - sent max_mtu in lec driver, remove lec_change_mtu
      - set min/max_mtu in x25_asy driver
      
      CC: netdev@vger.kernel.org
      CC: Krzysztof Halasa <khc@pm.waw.pl>
      CC: Krzysztof Halasa <khalasa@piap.pl>
      CC: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
      CC: Francois Romieu <romieu@fr.zoreil.com>
      CC: Kevin Curtis <kevin.curtis@farsite.co.uk>
      CC: Zhao Qiang <qiang.zhao@nxp.com>
      Signed-off-by: default avatarJarod Wilson <jarod@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8b6b4135
    • Jarod Wilson's avatar
      net: use core MTU range checking in wireless drivers · 9c22b4a3
      Jarod Wilson authored
      - set max_mtu in wil6210 driver
      - set max_mtu in atmel driver
      - set min/max_mtu in cisco airo driver, remove airo_change_mtu
      - set min/max_mtu in ipw2100/ipw2200 drivers, remove libipw_change_mtu
      - set min/max_mtu in p80211netdev, remove wlan_change_mtu
      - set min/max_mtu in net/mac80211/iface.c and remove ieee80211_change_mtu
      - set min/max_mtu in wimax/i2400m and remove i2400m_change_mtu
      - set min/max_mtu in intersil/hostap and remove prism2_change_mtu
      - set min/max_mtu in intersil/orinoco
      - set min/max_mtu in tty/n_gsm and remove gsm_change_mtu
      
      CC: netdev@vger.kernel.org
      CC: linux-wireless@vger.kernel.org
      CC: Maya Erez <qca_merez@qca.qualcomm.com>
      CC: Simon Kelley <simon@thekelleys.org.uk>
      CC: Stanislav Yakovlev <stas.yakovlev@gmail.com>
      CC: Johannes Berg <johannes@sipsolutions.net>
      CC: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
      Signed-off-by: default avatarJarod Wilson <jarod@redhat.com>
      Acked-by: default avatarJohannes Berg <johannes@sipsolutions.net>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      9c22b4a3
    • Jarod Wilson's avatar
      net: use core MTU range checking in USB NIC drivers · f77f0aee
      Jarod Wilson authored
      usbnet:
      - Remove stale new_mtu <= 0 check in usbnet.c
      - Set min_mtu = 0, max_mtu = 65535 (sub-drivers must set their own
        max_mtu and/or min_mtu as needed)
      
      r8152:
      - Set appropriate max_mtu for different variants (1500 or 9194)
      
      lan78xx:
      - Set max_mtu = 9000
      
      asix_driver:
      - max_mtu = 16384 for ax88178 variant
      
      ax88179:
      - max_mtu = 4088
      
      cdc_ncm:
      - max_mtu from hardware
      
      cdc-phonet:
      - min_mtu = 6, max_mtu = 65541
      
      sierra_net:
      - max_mtu = 1500, call usbnet_change_mtu directly
      - sierra_net_change_mtu checked for MTU > 1500, then called
        usbnet_change_mtu, but if we set max_mtu to let the network core handle
        the range check, then we can simply call usbnet_change_mtu directly
      
      smsc75xx:
      - max_mtu = 9000
      
      CC: netdev@vger.kernel.org
      CC: Woojung Huh <woojung.huh@microchip.com>
      CC: Microchip Linux Driver Support <UNGLinuxDriver@microchip.com>
      CC: Hayes Wang <hayeswang@realtek.com>
      CC: Oliver Neukum <oneukum@suse.com>
      CC: Steve Glendinning <steve.glendinning@shawell.net>
      Signed-off-by: default avatarJarod Wilson <jarod@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f77f0aee
    • Jarod Wilson's avatar
      ethernet: use net core MTU range checking in more drivers · d894be57
      Jarod Wilson authored
      Somehow, I missed a healthy number of ethernet drivers in the last pass.
      Most of these drivers either were in need of an updated max_mtu to make
      jumbo frames possible to enable again. In a few cases, also setting a
      different min_mtu to match previous lower bounds. There are also a few
      drivers that had no upper bounds checking, so they're getting a brand new
      ETH_MAX_MTU that is identical to IP_MAX_MTU, but accessible by includes
      all ethernet and ethernet-like drivers all have already.
      
      acenic:
      - min_mtu = 0, max_mtu = 9000
      
      amazon/ena:
      - min_mtu = 128, max_mtu = adapter->max_mtu
      
      amd/xgbe:
      - min_mtu = 0, max_mtu = 9000
      
      sb1250:
      - min_mtu = 0, max_mtu = 1518
      
      cxgb3:
      - min_mtu = 81, max_mtu = 65535
      
      cxgb4:
      - min_mtu = 81, max_mtu = 9600
      
      cxgb4vf:
      - min_mtu = 81, max_mtu = 65535
      
      benet:
      - min_mtu = 256, max_mtu = 9000
      
      ibmveth:
      - min_mtu = 68, max_mtu = 65535
      
      ibmvnic:
      - min_mtu = adapter->min_mtu, max_mtu = adapter->max_mtu
      - remove now redundant ibmvnic_change_mtu
      
      jme:
      - min_mtu = 1280, max_mtu = 9202
      
      mv643xx_eth:
      - min_mtu = 64, max_mtu = 9500
      
      mlxsw:
      - min_mtu = 0, max_mtu = 65535
      - Basically bypassing the core checks, and instead relying on dynamic
        checks in the respective switch drivers' ndo_change_mtu functions
      
      ns83820:
      - min_mtu = 0
      - remove redundant ns83820_change_mtu, only checked for mtu > 1500
      
      netxen:
      - min_mtu = 0, max_mtu = 8000 (P2), max_mtu = 9600 (P3)
      
      qlge:
      - min_mtu = 1500, max_mtu = 9000
      - driver only supports setting mtu to 1500 or 9000, so the core check only
        rules out < 1500 and > 9000, qlge_change_mtu still needs to check that
        the value is 1500 or 9000
      
      qualcomm/emac:
      - min_mtu = 46, max_mtu = 9194
      
      xilinx_axienet:
      - min_mtu = 64, max_mtu = 9000
      
      Fixes: 61e84623 ("net: centralize net_device min/max MTU checking")
      CC: netdev@vger.kernel.org
      CC: Jes Sorensen <jes@trained-monkey.org>
      CC: Netanel Belgazal <netanel@annapurnalabs.com>
      CC: Tom Lendacky <thomas.lendacky@amd.com>
      CC: Santosh Raspatur <santosh@chelsio.com>
      CC: Hariprasad S <hariprasad@chelsio.com>
      CC: Sathya Perla <sathya.perla@broadcom.com>
      CC: Ajit Khaparde <ajit.khaparde@broadcom.com>
      CC: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
      CC: Somnath Kotur <somnath.kotur@broadcom.com>
      CC: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
      CC: John Allen <jallen@linux.vnet.ibm.com>
      CC: Guo-Fu Tseng <cooldavid@cooldavid.org>
      CC: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
      CC: Jiri Pirko <jiri@mellanox.com>
      CC: Ido Schimmel <idosch@mellanox.com>
      CC: Manish Chopra <manish.chopra@qlogic.com>
      CC: Sony Chacko <sony.chacko@qlogic.com>
      CC: Rajesh Borundia <rajesh.borundia@qlogic.com>
      CC: Timur Tabi <timur@codeaurora.org>
      CC: Anirudha Sarangi <anirudh@xilinx.com>
      CC: John Linn <John.Linn@xilinx.com>
      Signed-off-by: default avatarJarod Wilson <jarod@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d894be57
    • Wei Yongjun's avatar
      myri10ge: fix typo in parameter description · 1a61a8f1
      Wei Yongjun authored
      Fix typo in parameter description.
      Signed-off-by: default avatarWei Yongjun <weiyongjun1@huawei.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      1a61a8f1
    • Wei Yongjun's avatar
      net: ethernet: mediatek: use dev_kfree_skb_any instead of dev_kfree_skb · 81ad2b7d
      Wei Yongjun authored
      Replace dev_kfree_skb with dev_kfree_skb_any in mtk_start_xmit()
      which can be called from hard irq context (netpoll) and from
      other contexts. mtk_start_xmit() only frees skbs that it has
      dropped.
      
      This is detected by Coccinelle semantic patch.
      Signed-off-by: default avatarWei Yongjun <weiyongjun1@huawei.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      81ad2b7d
    • Wei Yongjun's avatar
      dwc_eth_qos: use dev_kfree_skb_any instead of dev_kfree_skb · d80f45ff
      Wei Yongjun authored
      Replace dev_kfree_skb with dev_kfree_skb_any in dwceqos_start_xmit()
      which can be called from hard irq context (netpoll) and from
      other contexts. dwceqos_start_xmit() only frees skbs that it has
      dropped.
      
      This is detected by Coccinelle semantic patch.
      Signed-off-by: default avatarWei Yongjun <weiyongjun1@huawei.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d80f45ff
    • Shaohui Xie's avatar
      net: phy: aquantia: add PHY ID of AQR106 and AQR107 · 547412fe
      Shaohui Xie authored
      The AQR106 and AQR107 can use the existing driver.
      Signed-off-by: default avatarShaohui Xie <Shaohui.Xie@nxp.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      547412fe
    • Uwe Kleine-König's avatar
      net: fec: drop check for clk==NULL before calling clk_* · 01e5943a
      Uwe Kleine-König authored
      clk_prepare, clk_enable and their counterparts (at least the common clk
      ones, but also most others) do check for the clk being NULL anyhow (and
      return 0 then), so there is no gain when the caller checks, too.
      Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
      Acked-by: default avatarFugang Duan <fugang.duan@nxp.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      01e5943a
    • Eric Dumazet's avatar
      tcp: relax listening_hash operations · 9652dc2e
      Eric Dumazet authored
      softirq handlers use RCU protection to lookup listeners,
      and write operations all happen from process context.
      We do not need to block BH for dump operations.
      
      Also SYN_RECV since request sockets are stored in the ehash table :
      
       1) inet_diag_dump_icsk() no longer need to clear
          cb->args[3] and cb->args[4] that were used as cursors while
          iterating the old per listener hash table.
      
       2) Also factorize a test : No need to scan listening_hash[]
          if r->id.idiag_dport is not zero.
      Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      9652dc2e
    • Robert Jarzmik's avatar
      net: smc91x: fix neponset breakage by pxa u16 writes · 25c07e2c
      Robert Jarzmik authored
      The patch isolating the u16 writes for pxa assumed all machine_is_*()
      calls were removed, and therefore removed the mach-types.h include which
      provided them.
      
      Unfortunately 2 machine_is_*() remained in smc91x.c file including
      smc91x.h from which the include was removed, triggering the error:
       drivers/net/ethernet/smsc/smc91x.c: In function ‘smc_drv_probe’:
       drivers/net/ethernet/smsc/smc91x.c:2380:2: error: implicit declaration
       of function ‘machine_is_assabet’
       [-Werror=implicit-function-declaration]
      	if (machine_is_assabet() && machine_has_neponset())
      
      This adds back the wrongly removed include.
      
      Fixes: d09d747a ("net: smc91x: isolate u16 writes alignment workaround")
      Signed-off-by: default avatarRobert Jarzmik <robert.jarzmik@free.fr>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      25c07e2c
    • Thomas Graf's avatar
      ila: Fix tailroom allocation of lwtstate · c5098ebb
      Thomas Graf authored
      Tailroom is supposed to be of length sizeof(struct ila_lwt) but
      sizeof(struct ila_params) is currently allocated.
      
      This leads to the dst_cache and connected member of ila_lwt being
      referenced out of bounds.
      
      struct ila_lwt {
      	struct ila_params p;
      	struct dst_cache dst_cache;
      	u32 connected : 1;
      };
      
      Fixes: 65d7ab8d ("net: Identifier Locator Addressing module")
      Signed-off-by: default avatarThomas Graf <tgraf@suug.ch>
      Acked-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c5098ebb
  2. 19 Oct, 2016 9 commits
  3. 18 Oct, 2016 13 commits