igb: check timestamp validity

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Add a couple of checks to make sure timestamping is on and that the
timestamp value from DMA is valid. This avoids any functional issues
that could come from a misinterpreted time stamp.

One of the functions changed doesn't need a return value added because
there was no value in checking from the calling locations.

While here, fix a couple of reverse christmas tree issues next to
the code being changed.

Fixes: f56e7bba22 ("igb: Pull timestamp from fragment before adding it to skb")
Fixes: 9cbc948b5a ("igb: add XDP support")
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Dave Switzer <david.switzer@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

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This commit is contained in:

Jesse Brandeburg 2021-03-03 12:51:03 -08:00 • committed by Tony Nguyen

parent a75519a848

commit f0a03a0268

3 changed files with 32 additions and 14 deletions

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4

drivers/net/ethernet/intel/igb/igb.h

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11

drivers/net/ethernet/intel/igb/igb_main.c

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31

drivers/net/ethernet/intel/igb/igb_ptp.c

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