Allied Telesis AT-24xx - Manual (Page 2)

AT-NICm5x Device Driver for AT-24xx and AT-27xx Series Ethernet Network Adapters Software Release Notes
PN 613-000280 Rev B 2 Allied Telesyn, Inc.
Driver Version 4.48
Bug Fixes
ˆ Corrected WHQL issue where receive statistics were not correctly updated.
Driver Version 4.47
Bug Fixes
ˆ In some cases, intermittent network connectivity was reported when using driver version 4.45. This
issue was caused when receive packets were indicated with NDIS_STATUS_SUCCESS. Receive
packets are now indicated with NDIS_STATUS_RESOURCES.
Driver Version 4.45
Bug Fixes
ˆ Corrected interrupt handling issues which caused higher than expected CPU utilization under heavy
load.
ˆ Transmit packet data was not being padded with zeros when the payload was less than the 60 bytes.
Corrected for security reasons.
ˆ Corrected the demand-transmit routine, which was disabling the NIC interrupt every time it was called
after sending a batch of packets. Now, if the NIC’s interrupt is enabled when this function is called, it is
not disabled.
ˆ Corrected issue with transmit statistics where transmit errors such as Loss of Carrier and Late
Collisions were not being tracked properly.
ˆ Corrected the driver statistics to correctly support 64-bit OIDs.
ˆ Corrected spin lock issues relating to LBFO (load balancing and failover) functionality, which were
causing random lock-ups on multi-processor systems.
ˆ Changed receive packet indication from NDIS_STATUS_RESOURCES to
NDIS_STATUS_SUCCESS.
ˆ Corrected Receive Lookahead setting.
ˆ Corrected failure to communicate after resuming from hibernation.
ˆ Corrected speed indication issue with multi-PHY hardware versions.
Enhancements
ˆ Implemented Scatter/Gather DMA support.
ˆ Implemented the NDIS packet buffer ring for transmit packets.
ˆ Interrupt sharing is now enabled.
ˆ Implemented transmit interrupt masking to improve CPU utilization.
ˆ Enabled burst-mode DMA support to increase performance.
ˆ Changed the PHY setup for the Am79C976-based NICs to use the port manager to automatically
configure the external PHY.
ˆ Implemented the NDIS “Check for Hang” routine, which monitors the chip to ensure that it is running.
ˆ Moved the link check function call to the check-for-hang routine to eliminate the need for a separate
timer, and to avoid waiting for the driver-supplied spin lock, thus affecting performance.