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In the case of invalid or corrupted v2 counter update packets,
efx_tc_rx_version_2() returns EFX_TC_COUNTER_TYPE_MAX. In this case
we should not attempt to update generation counts as this will write
beyond the end of the seen_gen array.
Reported-by: coverity-bot <keescook+coverity-bot@chromium.org>
Addresses-Coverity-ID: 1527356 ("Memory - illegal accesses")
Fixes: 25730d8be5d8 ("sfc: add extra RX channel to receive MAE counter updates on ef100")
Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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On FLOW_CLS_STATS, look up the MAE counter by TC cookie, and report the
change in packet and byte count since the last time FLOW_CLS_STATS read
them.
Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add the packet and byte counts to the software running total, and store
the latest jiffies every time the counter is bumped.
Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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efx_tc_flower_get_counter_index() will create an MAE counter mapped to
the passed (TC filter) cookie, or increment the reference if one already
exists for that cookie.
Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Nothing populates them yet.
Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently there is no counter-allocating machinery to connect the
resulting counter update values to; that will be added in a
subsequent patch.
Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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