• Dave Jones's avatar
    llc: remove noisy WARN from llc_mac_hdr_init · 0f1a24c9
    Dave Jones authored
    Sending malformed llc packets triggers this spew, which seems excessive.
    
    WARNING: CPU: 1 PID: 6917 at net/llc/llc_output.c:46 llc_mac_hdr_init+0x85/0x90 [llc]()
    device type not supported: 0
    CPU: 1 PID: 6917 Comm: trinity-c1 Not tainted 3.13.0+ #95
     0000000000000009 00000000007e257d ffff88009232fbe8 ffffffffac737325
     ffff88009232fc30 ffff88009232fc20 ffffffffac06d28d ffff88020e07f180
     ffff88009232fec0 00000000000000c8 0000000000000000 ffff88009232fe70
    Call Trace:
     [<ffffffffac737325>] dump_stack+0x4e/0x7a
     [<ffffffffac06d28d>] warn_slowpath_common+0x7d/0xa0
     [<ffffffffac06d30c>] warn_slowpath_fmt+0x5c/0x80
     [<ffffffffc01736d5>] llc_mac_hdr_init+0x85/0x90 [llc]
     [<ffffffffc0173759>] llc_build_and_send_ui_pkt+0x79/0x90 [llc]
     [<ffffffffc057cdba>] llc_ui_sendmsg+0x23a/0x400 [llc2]
     [<ffffffffac605d8c>] sock_sendmsg+0x9c/0xe0
     [<ffffffffac185a37>] ? might_fault+0x47/0x50
     [<ffffffffac606321>] SYSC_sendto+0x121/0x1c0
     [<ffffffffac011847>] ? syscall_trace_enter+0x207/0x270
     [<ffffffffac6071ce>] SyS_sendto+0xe/0x10
     [<ffffffffac74aaa4>] tracesys+0xdd/0xe2
    
    Until 2009, this was a printk, when it was changed in
    bf9ae538: "llc: use dev_hard_header".
    
    Let userland figure out what -EINVAL means by itself.
    Signed-off-by: default avatarDave Jones <davej@fedoraproject.org>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    0f1a24c9
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