igc: Add support for TX timestamping

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This adds support for timestamping packets being transmitted.

Based on the code from i210. The basic differences is that i225 has 4
registers to store the transmit timestamps (i210 has one). Right now,
we only support retrieving from one register, support for using the
other registers will be added later.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

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Vinicius Costa Gomes 2019-12-02 15:19:51 -08:00 • committed by Jeff Kirsher

parent 81b055205e

commit 2c344ae245

4 changed files with 158 additions and 0 deletions

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2

drivers/net/ethernet/intel/igc/igc.h

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14

drivers/net/ethernet/intel/igc/igc_defines.h

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50

drivers/net/ethernet/intel/igc/igc_main.c

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92

drivers/net/ethernet/intel/igc/igc_ptp.c

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