diff options
| author | Kevin Bowling <kbowling@FreeBSD.org> | 2026-02-13 06:30:22 +0000 |
|---|---|---|
| committer | Kevin Bowling <kbowling@FreeBSD.org> | 2026-02-13 06:33:43 +0000 |
| commit | 2bdec2ee73be7dbafce9982b0dc5c273918a5443 (patch) | |
| tree | 8c138fed5a899aed92b14d32c79c9d5fe84c3e36 | |
| parent | 1a6bdd6266e3b53c8b6b597a77a100353b7ae13a (diff) | |
e1000: Increase FC pause/refresh time on PCH2 and newer
This corresponds to Linux f74dc880098b4a29f76d756b888fb31d81ad9a0c
That commit does not provide any public background detail, but it's been
in use for over 5 years and corresponds to previous chip bugs w.r.t.
automatic generation of PAUSE frames.
Reviewed by: kgalazka
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D54555
| -rw-r--r-- | sys/dev/e1000/if_em.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/dev/e1000/if_em.c b/sys/dev/e1000/if_em.c index 4d7bc794a0b2..3118b27e8122 100644 --- a/sys/dev/e1000/if_em.c +++ b/sys/dev/e1000/if_em.c @@ -3225,8 +3225,8 @@ em_reset(if_ctx_t ctx) case e1000_pch_ptp: hw->fc.high_water = 0x5C20; hw->fc.low_water = 0x5048; - hw->fc.pause_time = 0x0650; - hw->fc.refresh_time = 0x0400; + hw->fc.pause_time = 0xFFFF; + hw->fc.refresh_time = 0xFFFF; /* Jumbos need adjusted PBA */ if (if_getmtu(ifp) > ETHERMTU) E1000_WRITE_REG(hw, E1000_PBA, 12); |