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[lwip-devel] [task #14247] socket API: implement recvmsg msg_control sup

From: Simon Goldschmidt
Subject: [lwip-devel] [task #14247] socket API: implement recvmsg msg_control support
Date: Wed, 19 Apr 2017 15:13:55 -0400 (EDT)
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36

Follow-up Comment #14, task #14247 (project lwip):

The SOF_PKTINFO flag is better off in struct netconn anyway. It is not used in
core code at all.
Given that we could:
- leave LWIP_NETBUF_RECVINFO as it was
- enable NETCONN_FLAG_PKTINFO for netconns (add a function/define for that!)
- disable NETCONN_FLAG_PKTINFO for sockets
- enable NETCONN_FLAG_PKTINFO if enabled via setsockopt(IP_PKTINFO)
- output PKTINFO if the netbuf has that information


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