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| author | Andrey V. Elsukov <ae@FreeBSD.org> | 2022-11-10 09:34:40 +0000 |
|---|---|---|
| committer | Gordon Tetlow <gordon@FreeBSD.org> | 2023-02-08 16:32:26 +0000 |
| commit | f31403bfdd79be98e11a00cccf4b6707e006ba7a (patch) | |
| tree | 9bd357cf23d8ce8431c7652ded6db9b847e0957c | |
| parent | d4745a8681160931692d9d399174842b1f07cc94 (diff) | |
| download | src-f31403bfdd79be98e11a00cccf4b6707e006ba7a.tar.gz src-f31403bfdd79be98e11a00cccf4b6707e006ba7a.zip | |
ixgbe: workaround errata about UDP frames with zero checksum
Intel 82599 has errata related to IPv4 UDP frames with zero checksum.
It reports such datagrams with L4 integrity errors in IXGBE_XEC
register. And after afb1aa4e6df2 commit such errors are reported
via IFCOUNTER_IERRORS. This confuses users, since actually all frames
are handled correctly by the system.
To workaround the problem, let's ignore the XEC register value for
82599 cards for now.
PR: 266048
Discussed with: erj
Sponsored by: Yandex LLC
Approved by: so
Security: FreeBSD-EN-23:04.ixgbe
(cherry picked from commit 8526120ad41ca47367b43f8f4459e0fa61285571)
(cherry picked from commit fe9c4deda9d4aa2c5bed75071f8006bd2a0734a2)
| -rw-r--r-- | sys/dev/ixgbe/if_ix.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/dev/ixgbe/if_ix.c b/sys/dev/ixgbe/if_ix.c index 581944fa6a73..ad1b3be871b9 100644 --- a/sys/dev/ixgbe/if_ix.c +++ b/sys/dev/ixgbe/if_ix.c @@ -1539,8 +1539,12 @@ ixgbe_update_stats_counters(struct ixgbe_softc *sc) * - fragmented packets count, * - oversized packets count, * - jabber count. + * + * Ignore XEC errors for 82599 to workaround errata about + * UDP frames with zero checksum. */ - IXGBE_SET_IERRORS(sc, stats->crcerrs + stats->illerrc + stats->xec + + IXGBE_SET_IERRORS(sc, stats->crcerrs + stats->illerrc + + (hw->mac.type != ixgbe_mac_82599EB ? stats->xec : 0) + stats->mpc[0] + stats->rlec + stats->ruc + stats->rfc + stats->roc + stats->rjc); } /* ixgbe_update_stats_counters */ |