• Karicheri, Muralidharan's avatar
    hsr: fix incorrect warning · 675c8da0
    Karicheri, Muralidharan authored
    When HSR interface is setup using ip link command, an annoying warning
    appears with the trace as below:-
    
    [  203.019828] hsr_get_node: Non-HSR frame
    [  203.019833] Modules linked in:
    [  203.019848] CPU: 0 PID: 158 Comm: sd-resolve Tainted: G        W       4.12.0-rc3-00052-g9fa6bf70 #2
    [  203.019853] Hardware name: Generic DRA74X (Flattened Device Tree)
    [  203.019869] [<c0110280>] (unwind_backtrace) from [<c010c2f4>] (show_stack+0x10/0x14)
    [  203.019880] [<c010c2f4>] (show_stack) from [<c04b9f64>] (dump_stack+0xac/0xe0)
    [  203.019894] [<c04b9f64>] (dump_stack) from [<c01374e8>] (__warn+0xd8/0x104)
    [  203.019907] [<c01374e8>] (__warn) from [<c0137548>] (warn_slowpath_fmt+0x34/0x44)
    root@am57xx-evm:~# [  203.019921] [<c0137548>] (warn_slowpath_fmt) from [<c081126c>] (hsr_get_node+0x148/0x170)
    [  203.019932] [<c081126c>] (hsr_get_node) from [<c0814240>] (hsr_forward_skb+0x110/0x7c0)
    [  203.019942] [<c0814240>] (hsr_forward_skb) from [<c0811d64>] (hsr_dev_xmit+0x2c/0x34)
    [  203.019954] [<c0811d64>] (hsr_dev_xmit) from [<c06c0828>] (dev_hard_start_xmit+0xc4/0x3bc)
    [  203.019963] [<c06c0828>] (dev_hard_start_xmit) from [<c06c13d8>] (__dev_queue_xmit+0x7c4/0x98c)
    [  203.019974] [<c06c13d8>] (__dev_queue_xmit) from [<c0782f54>] (ip6_finish_output2+0x330/0xc1c)
    [  203.019983] [<c0782f54>] (ip6_finish_output2) from [<c0788f0c>] (ip6_output+0x58/0x454)
    [  203.019994] [<c0788f0c>] (ip6_output) from [<c07b16cc>] (mld_sendpack+0x420/0x744)
    
    As this is an expected path to hsr_get_node() with frame coming from
    the master interface, add a check to ensure packet is not from the
    master port and then warn.
    Signed-off-by: default avatarMurali Karicheri <m-karicheri2@ti.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    675c8da0