netdev - Missing support for PACKET_RECV

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Message-Id: <49E58C04-6C48-421D-B718-CD4733C1766B@holtmann.org>
Date:	Sun, 10 Aug 2014 21:28:15 -0700
From:	Marcel Holtmann <marcel@...tmann.org>
To:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Missing support for PACKET_RECV_OUTPUT

Hi,

I wonder why AF_PACKET does not support PACKET_RECV_OUTPUT socket option. I would find this useful when using AF_SOCKET to capture traffic on all interfaces, but only for a specific ETH_P_x specified in the socket call. Right now I have to manually enable promiscuous mode for every ifindex separately.

Is there any specific reason why this socket option has not been implemented? It is listed in linux/if_packet.h after all. Or is this just one of these things where nobody ended up implementing it?

Regards

Marcel

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