layerscape: add ls1088ardb device support

[openwrt/staging/yousong.git] / target / linux / layerscape / patches-4.4 / 7205-fsl-dpaa2-eth-sanitize-supported-private-flags.patch

diff --git a/target/linux/layerscape/patches-4.4/7205-fsl-dpaa2-eth-sanitize-supported-private-flags.patch b/target/linux/layerscape/patches-4.4/7205-fsl-dpaa2-eth-sanitize-supported-private-flags.patch
new file mode 100644 (file)
index 0000000..0f96213
--- /dev/null
+++ b/target/linux/layerscape/patches-4.4/7205-fsl-dpaa2-eth-sanitize-supported-private-flags.patch
@@ -0,0 +1,57 @@
+From 51106cb1fd14dfbf62c2760921463376f56ac732 Mon Sep 17 00:00:00 2001
+From: Bogdan Purcareata <bogdan.purcareata@nxp.com>
+Date: Tue, 21 Jun 2016 18:40:47 +0000
+Subject: [PATCH 205/226] fsl-dpaa2: eth: sanitize supported private flags
+
+On linux-v4.6 with CONFIG_MACVLAN=y, when bringing up a ni interface, the
+network stack crashes due to a segfault. This is related to the
+macvlan_device_event notifier, which registers itself to all the network
+interface in the system.
+
+The notifier reads the netdev private flags and incorrectly qualifies
+the interface as a macvlan port, since both the IFF_MACVLAN_PORT and
+IFF_PROMISC flags have the same offset. Code spelunking reveals that
+IFF_PROMISC is only used as an interface flag, not a private interface
+flag.
+
+A similar situation happens with IFF_ALLMULTI, which overlaps with
+IFF_BRIDGE_PORT. No info on the consequences of this, since I haven't
+tested bridge scenarios. The interface can still be set in allmulti
+mode using userspace tools (e.g. ifconfig).
+
+IFF_MULTICAST overlaps with IFF_UNICAST_FLT, therefore the current code
+has no effect as it is. The closest multicast activation based on device
+capabilities has been seen in the case of the Aeroflex Gaisler Ethernet
+MAC (aeroflex/greth.c) - here, the runtime (not private) flag is set on
+device probe. On a side node, ether_setup enables IFF_MULTICAST by default.
+
+Remove IFF_PROMISC, IFF_ALLMULTI and IFF_MULTICAST from device capabilities
+init.
+
+Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com>
+---
+ drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c |    7 +------
+ 1 file changed, 1 insertion(+), 6 deletions(-)
+
+--- a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
++++ b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
+@@ -1176,18 +1176,13 @@ static int dpaa2_eth_init(struct net_dev
+       u32 options = priv->dpni_attrs.options;
+ 
+       /* Capabilities listing */
+-      supported |= IFF_LIVE_ADDR_CHANGE | IFF_PROMISC | IFF_ALLMULTI;
++      supported |= IFF_LIVE_ADDR_CHANGE;
+ 
+       if (options & DPNI_OPT_UNICAST_FILTER)
+               supported |= IFF_UNICAST_FLT;
+       else
+               not_supported |= IFF_UNICAST_FLT;
+ 
+-      if (options & DPNI_OPT_MULTICAST_FILTER)
+-              supported |= IFF_MULTICAST;
+-      else
+-              not_supported |= IFF_MULTICAST;
+-
+       net_dev->priv_flags |= supported;
+       net_dev->priv_flags &= ~not_supported;
+