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Date: Thu, 17 Dec 2015 11:40:21 +0530 From: Prashant Upadhyaya <praupadhyaya@...il.com> To: Eric Dumazet <eric.dumazet@...il.com> Cc: netdev <netdev@...r.kernel.org> Subject: Re: Load Balancing for AF_INET Raw Sockets On Tue, Dec 15, 2015 at 8:09 PM, Eric Dumazet <eric.dumazet@...il.com> wrote: > On Tue, 2015-12-15 at 18:26 +0530, Prashant Upadhyaya wrote: >> Hi, >> >> I open a raw socket for listening to all the UDP packets in a raw fashion -- >> >> socket(AF_INET, SOCK_RAW, IPPROTO_UDP); >> >> Then I use recvfrom to read the packets over the socket. >> >> The above works mighty fine. >> I want to find out if it is possible to 'load balance' the UDP flows >> by opening up multiple instances of this socket and then possibly >> setting some socket options so that I can scale up the reading via >> multiple threads doing recvfrom on these from multiple cores. >> (I know it is possible over packet sockets, but that is a different usecase) > > No plan yet to support fanout on multiple raw sockets. > > Hi, One question on the AF_INET6 raw sockets. Here I don't get the ipv6 header at all when I read a packet. I checked the RFC 3542 and it specifies the following as the ancillary data which can be obtained -- Four similar pieces of information can be returned for a received packet as ancillary data: 1. the destination IPv6 address, 2. the arriving interface index, 3. the arriving hop limit, and 4. the arriving traffic class value. Now how do I obtain the 'src IPv6 address' ? Regards -Prashant -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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