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| author | Andrew Gallatin <gallatin@FreeBSD.org> | 2026-09-02 17:41:32 +0000 |
|---|---|---|
| committer | Andrew Gallatin <gallatin@FreeBSD.org> | 2026-09-03 14:23:55 +0000 |
| commit | a5bb0fde672271f7a4c5a460ed0cd0282a18ca66 (patch) | |
| tree | 9294cf9fae621ed57ecbdb1d29ae77f684c70f70 /test/Modules/Inputs/objc-hidden/(public-mirror) | |
| parent | 0abd71f39a5c296bf5bf41a0d98cfe849967d8f9 (diff) | |
The new watchdog code triggers spurious watchdog resets on
NICs doing KTLS offload. Fix this by using the actual segments
consumed by the NIC driver's isc_txd_encap.
The issue is that rs_pending is updated using an estimate of
the descriptors that will be used for the current packet,
based on what bus_dma produced. However, NICs which support
ktls offload may do extra DMAs (and consume extra
descriptors) to derive crypto state when re-transmitting
TLS segments. This is the reason for allowing drivers to control
ift_pad. When this happens, the estimated rs_pending may undercount.
This may also happen if NIC drivers consume extra descriptors for
other reasons. (eg, hw errata handling on e1000)
Reviewed by: kbowling
Differential Revision: https://reviews.freebsd.org/D59321
Sponsored-by: Netflix
Diffstat (limited to 'test/Modules/Inputs/objc-hidden/(public-mirror)')
0 files changed, 0 insertions, 0 deletions