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2009-02-26RDS/IB: Implement RDMA ops using FMRsAndy Grover1-0/+641
Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-26RDS/IB: Ring-handling code.Andy Grover1-0/+168
Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-26RDS/IB: Infiniband transportAndy Grover3-0/+1416
Registers as an RDS transport and an IB client, and uses IB CM API to allocate ids, queue pairs, and the rest of that fun stuff. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-26RDS: RDMA supportAndy Grover2-0/+763
Some transports may support RDMA features. This handles the non-transport-specific parts, like pinning user pages and tracking mapped regions. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-26RDS: recv.cAndy Grover1-0/+542
Upon receiving a datagram from the transport, RDS parses the headers and potentially queues an ACK. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-26RDS: send.cAndy Grover1-0/+1003
This is the code to send an RDS datagram. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-26RDS: Message parsingAndy Grover2-0/+623
Parsing of newly-received RDS message headers (including ext. headers) and copy-to/from-user routines. page.c implements a per-cpu page remainder cache, to reduce the number of allocations needed for small datagrams. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-26RDS: sysctlsAndy Grover1-0/+122
RDS exposes a few tunable parameters via sysctls. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-26RDS: loopbackAndy Grover2-0/+197
A simple rds transport to handle loopback connections. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-26RDS: Connection handlingAndy Grover2-0/+752
While arguably the fact that the underlying transport needs a connection to convey RDS's datagrame reliably is not important to rds proper, the transports implemented so far (IB and TCP) have both been connection-oriented, and so the connection state machine-related code is in the common rds code. This patch also includes several work items, to handle connecting, sending, receiving, and shutdown. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-26RDS: Info and statsAndy Grover3-0/+419
RDS currently generates a lot of stats that are accessible via the rds-info utility. This code implements the support for this. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-26RDS: Transport codeAndy Grover1-0/+117
RDS supports multiple transports. While this initial submission only supports Infiniband transport, this abstraction allows others to be added. We're working on an iWARP transport, and also see UDP over DCB as another possibility. This code handles transport registration. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-26RDS: Congestion-handling codeAndy Grover1-0/+402
RDS handles per-socket congestion by updating peers with a complete congestion map (8KB). This code keeps track of these maps for itself and ones received from peers. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-26RDS: Main header fileAndy Grover1-0/+686
RDS's main data structure definitions and exported functions. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-26RDS: Socket interfaceAndy Grover2-0/+785
Implement the RDS (Reliable Datagram Sockets) interface. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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