From 5e0c03c8cd40e5c3b7ba624b8ba9a343de79ade1 Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Sat, 11 Feb 2012 15:39:45 +0000 Subject: net: Support RX-ALL feature flag. This flag requests that network devices pass all received frames up the stack, even ones with errors such as invalid FCS (frame check sum). This will allow sniffers to see bad packets and perhaps give the user some idea how to fix the problem. Signed-off-by: Ben Greear Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- Documentation/networking/netdev-features.txt | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'Documentation/networking/netdev-features.txt') diff --git a/Documentation/networking/netdev-features.txt b/Documentation/networking/netdev-features.txt index 7d2781230d3..4164f5c02e4 100644 --- a/Documentation/networking/netdev-features.txt +++ b/Documentation/networking/netdev-features.txt @@ -158,3 +158,10 @@ VLANs. This may be not useful, though.] This requests that the NIC append the Ethernet Frame Checksum (FCS) to the end of the skb data. This allows sniffers and other tools to read the CRC recorded by the NIC on receipt of the packet. + +* rx-all + +This requests that the NIC receive all possible frames, including errored +frames (such as bad FCS, etc). This can be helpful when sniffing a link with +bad packets on it. Some NICs may receive more packets if also put into normal +PROMISC mdoe. -- cgit v1.2.3-70-g09d2