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authorSteven <sluong@cisco.com>2017-06-30 07:15:02 -0700
committerDamjan Marion <dmarion.lists@gmail.com>2017-07-06 13:27:25 +0000
commit9d6d9894b1035eda6163d96c72b9ddbaea096f0e (patch)
tree65982dd21771d8191ec351a6e8bbcab926e8a154 /src/plugins
parent475674ee5aa4e130a0ac0caf08ef9d579b8604b7 (diff)
devices: show interface rx-placement displays the wrong information (VPP-894)
show interface rx-placement somtimes displays the wrong interface names. This happens when there exists subinterfaces in VPP. The problem is due to the function show_interface_rx_placement_fn is calling format_vnet_sw_if_index_name with hw_if_index instead of sw_if_index. VPP has the concept of sw_if_index and hw_if_index. Each serves a different purpose. When there is no subinterfaces, both hw_if_index and sw_if_index may happen to have the same value. But don't count on it. When the API calls for sw_if_index, we must pass the sw_if_index although the hw_if_index has the same type which the compiler does not catch. Passing hw_if_index for an API which requires sw_if_index may have an unpredictable result such as described in the VPP-894 and sometimes it may even crash if the particular index does not exist. Change-Id: I76c4834f79b88a1c20684fcba64f14b2da142d77 Signed-off-by: Steven <sluong@cisco.com> (cherry picked from commit bafa4d048439fdbcc0bd577e43a2784d1b89bfc5)
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