Re: [PATCH net] netlink, mmap: don't walk rx ring on poll if receive queue non-empty

From: Daniel Borkmann Date: Thu, 10 Sep 2015 01:20:46 +0200 > In case of netlink mmap, there can be situations where received frames > have to be placed into the normal receive queue. The ring buffer indicates > this through NL_MMAP_STATUS_COPY, so the user is asked to pick them up > via recvmsg(

[PATCH net] netlink, mmap: don't walk rx ring on poll if receive queue non-empty

In case of netlink mmap, there can be situations where received frames have to be placed into the normal receive queue. The ring buffer indicates this through NL_MMAP_STATUS_COPY, so the user is asked to pick them up via recvmsg(2) syscall, and to put the slot back to NL_MMAP_STATUS_UNUSED. Commit