Module Name: src
Committed By: msaitoh
Date: Wed Aug 18 09:17:17 UTC 2021
Modified Files:
src/sys/dev/pci/ixgbe: ix_txrx.c
Log Message:
Refresh unrefreshed descriptors' buffers correctly.
- Update next_to_refresh at least before ixgbe_rx_unrefresed() to detect
the unrefreshed status correctly in ixgbe_rxeof().
- next_to_refresh points to the previous entry of the first unrefreshed
descriptor, so fix a loop variable to point to the correct one in
ixgbe_refresh_mbufs().
- Without the above two fixes, RX ring may have some unrefreshed entries
which have inconsistent state. On such state, "ifconfig down up" causes
panic in bus_dmamap_sync() on aarch64.
- Tested on amd64 and aarch64. OK'd by knakahara.
To generate a diff of this commit:
cvs rdiff -u -r1.81 -r1.82 src/sys/dev/pci/ixgbe/ix_txrx.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
