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Diffstat (limited to 'Documentation/networking/igb.txt')
| -rw-r--r-- | Documentation/networking/igb.txt | 31 |
1 files changed, 4 insertions, 27 deletions
diff --git a/Documentation/networking/igb.txt b/Documentation/networking/igb.txt index ab2d71831892..4a5e29c19bd1 100644 --- a/Documentation/networking/igb.txt +++ b/Documentation/networking/igb.txt @@ -36,6 +36,7 @@ Default Value: 0 This parameter adds support for SR-IOV. It causes the driver to spawn up to max_vfs worth of virtual function. + Additional Configurations ========================= @@ -60,9 +61,10 @@ Additional Configurations Ethtool ------- The driver utilizes the ethtool interface for driver configuration and - diagnostics, as well as displaying statistical information. + diagnostics, as well as displaying statistical information. The latest + version of Ethtool can be found at: - http://sourceforge.net/projects/gkernel. + http://ftp.kernel.org/pub/software/network/ethtool/ Enabling Wake on LAN* (WoL) --------------------------- @@ -91,31 +93,6 @@ Additional Configurations REQUIREMENTS: MSI-X support is required for Multiqueue. If MSI-X is not found, the system will fallback to MSI or to Legacy interrupts. - LRO - --- - Large Receive Offload (LRO) is a technique for increasing inbound throughput - of high-bandwidth network connections by reducing CPU overhead. It works by - aggregating multiple incoming packets from a single stream into a larger - buffer before they are passed higher up the networking stack, thus reducing - the number of packets that have to be processed. LRO combines multiple - Ethernet frames into a single receive in the stack, thereby potentially - decreasing CPU utilization for receives. - - NOTE: You need to have inet_lro enabled via either the CONFIG_INET_LRO or - CONFIG_INET_LRO_MODULE kernel config option. Additionally, if - CONFIG_INET_LRO_MODULE is used, the inet_lro module needs to be loaded - before the igb driver. - - You can verify that the driver is using LRO by looking at these counters in - Ethtool: - - lro_aggregated - count of total packets that were combined - lro_flushed - counts the number of packets flushed out of LRO - lro_no_desc - counts the number of times an LRO descriptor was not available - for the LRO packet - - NOTE: IPv6 and UDP are not supported by LRO. - Support ======= |