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Groups > linux.kernel > #1558361

[PATCH 4.9 14/59] net/mlx5e: Dont sync netdev state when not registered

From Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Newsgroups linux.kernel
Subject [PATCH 4.9 14/59] net/mlx5e: Dont sync netdev state when not registered
Date 2017-01-13 13:20 +0100
Message-ID <sZ8ZR-L2-43@gated-at.bofh.it> (permalink)
References <sZ8Q9-HA-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Saeed Mahameed <saeedm@mellanox.com>


[ Upstream commit 610e89e05c3f28a7394935aa6b91f99548c4fd3c ]

Skip setting netdev vxlan ports and netdev rx_mode on driver load
when netdev is not yet registered.

Synchronizing with netdev state is needed only on reset flow where the
netdev remains registered for the whole reset period.

This also fixes an access before initialization of net_device.addr_list_lock
- which for some reason initialized on register_netdev - where we queued
set_rx_mode work on driver load before netdev registration.

Fixes: 26e59d8077a3 ("net/mlx5e: Implement mlx5e interface attach/detach callbacks")
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reported-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c |   19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -3773,14 +3773,7 @@ static void mlx5e_nic_enable(struct mlx5
 
 	mlx5_lag_add(mdev, netdev);
 
-	if (mlx5e_vxlan_allowed(mdev)) {
-		rtnl_lock();
-		udp_tunnel_get_rx_info(netdev);
-		rtnl_unlock();
-	}
-
 	mlx5e_enable_async_events(priv);
-	queue_work(priv->wq, &priv->set_rx_mode_work);
 
 	if (MLX5_CAP_GEN(mdev, vport_group_manager)) {
 		mlx5_query_nic_vport_mac_address(mdev, 0, rep.hw_id);
@@ -3790,6 +3783,18 @@ static void mlx5e_nic_enable(struct mlx5
 		rep.priv_data = priv;
 		mlx5_eswitch_register_vport_rep(esw, 0, &rep);
 	}
+
+	if (netdev->reg_state != NETREG_REGISTERED)
+		return;
+
+	/* Device already registered: sync netdev system state */
+	if (mlx5e_vxlan_allowed(mdev)) {
+		rtnl_lock();
+		udp_tunnel_get_rx_info(netdev);
+		rtnl_unlock();
+	}
+
+	queue_work(priv->wq, &priv->set_rx_mode_work);
 }
 
 static void mlx5e_nic_disable(struct mlx5e_priv *priv)

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[PATCH 4.9 00/59] 4.9.4-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 46/59] ARM: zynq: Reserve correct amount of non-DMA RAM Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 50/59] ARM: OMAP5: Fix mpuss_early_init Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 47/59] ARM: qcom_defconfig: Fix MDM9515 LCC and GCC config Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 32/59] gro: Enter slow-path if there is no tailroom Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 35/59] net/mlx5e: Remove WARN_ONCE from adaptive moderation code Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 28/59] r8152: split rtl8152_suspend function Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 17/59] net: fix incorrect original ingress device index in PKTINFO Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 33/59] gro: use min_t() in skb_gro_reset_offset() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 59/59] rtlwifi: rtl_usb: Fix missing entry in USB drivers private data Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 08/59] net/sched: cls_flower: Fix missing addr_type in classify Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 39/59] ALSA: firewire-tascam: Fix to handle error from initialization of stream data Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 53/59] ARM: 8631/1: clkdev: Detect errors in clk_hw_register_clkdev() for mass registration Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 29/59] r8152: fix rx issue for runtime suspend Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 26/59] net: dsa: bcm_sf2: Do not clobber b53_switch_ops Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 58/59] rtlwifi: Fix enter/exit power_save Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 23/59] ipv4: Do not allow MAIN to be alias for new LOCAL w/ custom rules Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 19/59] drop_monitor: add missing call to genlmsg_end Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 42/59] arm64: dts: mt8173: Fix auxadc node Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 13/59] net/mlx5: Prevent setting multicast macs for VFs Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 02/59] net: vrf: Drop conntrack data after pass through VRF device on Tx Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 05/59] ipv6: handle -EFAULT from skb_copy_bits Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 30/59] net: dsa: Ensure validity of dst->ds[0] Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 54/59] ARM: omap2+: am437x: rollback to use omap3_gptimer_timer_init() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 10/59] net/mlx5: Cancel recovery work in remove flow Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 06/59] net, sched: fix soft lockup in tc_classify Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 52/59] ARM: OMAP4+: Fix bad fallthrough for cpuidle Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 01/59] net: vrf: Fix NAT within a VRF Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 16/59] rtnl: stats - add missing netlink message size checks Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 12/59] net/mlx5: Mask destination mac value in ethtool steering rules Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 07/59] net: stmmac: Fix race between stmmac_drv_probe and stmmac_open Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 27/59] net: dsa: bcm_sf2: Utilize nested MDIO read/write Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 48/59] svcrdma: Clear xpt_bc_xps in xprt_setup_rdma_bc() error exit arm Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 38/59] HID: hid-cypress: validate length of report Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 11/59] net/mlx5: Avoid shadowing numa_node Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 51/59] ARM: OMAP5: Fix build for PM code Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 22/59] igmp: Make igmp group member RFC 3376 compliant Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 24/59] net: vrf: Add missing Rx counters Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 56/59] ALSA: usb-audio: Add a quirk for Plantronics BT600 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:10 +0100
  [PATCH 4.9 21/59] flow_dissector: Update pptp handling to avoid null pointer deref. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:20 +0100
  [PATCH 4.9 41/59] tools/virtio: fix READ_ONCE() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:20 +0100
  [PATCH 4.9 49/59] bus: arm-ccn: Prevent hotplug callback leak Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:20 +0100
  [PATCH 4.9 03/59] sctp: sctp_transport_lookup_process should rcu_read_unlock when transport is null Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:20 +0100
  [PATCH 4.9 09/59] net/mlx5: Check FW limitations on log_max_qp before setting it Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:20 +0100
  [PATCH 4.9 04/59] inet: fix IP(V6)_RECVORIGDSTADDR for udp sockets Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:20 +0100
  [PATCH 4.9 20/59] drop_monitor: consider inserted data in genlmsg_end Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:20 +0100
  [PATCH 4.9 40/59] powerpc: Fix build warning on 32-bit PPC Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:20 +0100
  [PATCH 4.9 18/59] net: ipv4: dst for local input routes should use l3mdev if relevant Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:20 +0100
  [PATCH 4.9 45/59] ARM: pxa: fix pxa25x interrupt init Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:20 +0100
  [PATCH 4.9 37/59] net: vrf: do not allow table id 0 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:20 +0100
  [PATCH 4.9 34/59] gro: Disable frag0 optimization on IPv6 ext headers Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:20 +0100
  [PATCH 4.9 15/59] net/mlx5e: Disable netdev after close Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:20 +0100
  [PATCH 4.9 14/59] net/mlx5e: Dont sync netdev state when not registered Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:20 +0100
  [PATCH 4.9 25/59] bpf: change back to orig prog on too many passes Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:20 +0100
  [PATCH 4.9 36/59] net: ipv4: Fix multipath selection with vrf Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:20 +0100
  [PATCH 4.9 43/59] ARM64: dts: bcm2837-rpi-3-b: remove incorrect pwr LED Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-13 13:20 +0100
  Re: [PATCH 4.9 00/59] 4.9.4-stable review Guenter Roeck <linux@roeck-us.net> - 2017-01-13 21:30 +0100
    Re: [PATCH 4.9 00/59] 4.9.4-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-14 08:30 +0100
  Re: [PATCH 4.9 00/59] 4.9.4-stable review Shuah Khan <shuah.kh@samsung.com> - 2017-01-13 23:00 +0100
    Re: [PATCH 4.9 00/59] 4.9.4-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-01-14 08:30 +0100

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