Mon, Nov 27, 2017 at 05:19:25PM CET, arnd@arndb.de wrote:
I tried to figure out what it would take to do a version 4 mmap packet socket interface to completely avoid the y2106 overflow problem. This is what I came up with, reusing most of the v3 code, except for the parts where we access the timestamps.
For kselftest, I'm adding support for testing v4 in addition to v1-v3, but the test currently does not look at the timestamps, so it won't check that the timestamp format actually works as intended, only that I didn't break the parts that worked in the v3 selftest.
Overall, this is more of a mess than I expected, so it's probably not worth doing a v4 format just for the timestamp, but the patch can serve as a reference for anyone that needs a new format for other reasons and fixes this along with the other changes.
Signed-off-by: Arnd Bergmann arnd@arndb.de
[...]
@@ -250,7 +269,8 @@ struct tpacket_block_desc { enum tpacket_versions { TPACKET_V1, TPACKET_V2,
- TPACKET_V3
- TPACKET_V3,
- TPACKET_V4,
I wonder with how many versions are we going to eventually end up with :O -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html