sfc: fix timestamp reconstruction at 16-bit rollover points
We can't just use the top bits of the last sync event as they could be off-by-one every 65,536 seconds, giving an error in reconstruction of 65,536 seconds. This patch uses the difference in the bottom 16 bits (mod 2^16) to calculate an offset that needs to be applied to the last sync event to get to the current time. Signed-off-by:Alexandru-Mihai Maftei <amaftei@solarflare.com> Acked-by:
Martin Habets <mhabets@solarflare.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
parent
3f74957f
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