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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/networking/device_drivers/ethernet/freescale/gianfar.rst | |
parent | Initial commit. (diff) | |
download | linux-upstream/5.10.209.tar.xz linux-upstream/5.10.209.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | Documentation/networking/device_drivers/ethernet/freescale/gianfar.rst | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/Documentation/networking/device_drivers/ethernet/freescale/gianfar.rst b/Documentation/networking/device_drivers/ethernet/freescale/gianfar.rst new file mode 100644 index 000000000..9c4a91d38 --- /dev/null +++ b/Documentation/networking/device_drivers/ethernet/freescale/gianfar.rst @@ -0,0 +1,51 @@ +.. SPDX-License-Identifier: GPL-2.0 + +=========================== +The Gianfar Ethernet Driver +=========================== + +:Author: Andy Fleming <afleming@freescale.com> +:Updated: 2005-07-28 + + +Checksum Offloading +=================== + +The eTSEC controller (first included in parts from late 2005 like +the 8548) has the ability to perform TCP, UDP, and IP checksums +in hardware. The Linux kernel only offloads the TCP and UDP +checksums (and always performs the pseudo header checksums), so +the driver only supports checksumming for TCP/IP and UDP/IP +packets. Use ethtool to enable or disable this feature for RX +and TX. + +VLAN +==== + +In order to use VLAN, please consult Linux documentation on +configuring VLANs. The gianfar driver supports hardware insertion and +extraction of VLAN headers, but not filtering. Filtering will be +done by the kernel. + +Multicasting +============ + +The gianfar driver supports using the group hash table on the +TSEC (and the extended hash table on the eTSEC) for multicast +filtering. On the eTSEC, the exact-match MAC registers are used +before the hash tables. See Linux documentation on how to join +multicast groups. + +Padding +======= + +The gianfar driver supports padding received frames with 2 bytes +to align the IP header to a 16-byte boundary, when supported by +hardware. + +Ethtool +======= + +The gianfar driver supports the use of ethtool for many +configuration options. You must run ethtool only on currently +open interfaces. See ethtool documentation for details. |