From: Sean Hefty <sean.hefty@intel.com>
Date: Wed, 19 Dec 2012 00:03:25 +0000 (-0800)
Subject: refresh
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=1d2df4723d4b2fcf47ff9c436bdcedacaeeb56df;p=~shefty%2Flibrdmacm.git

refresh
---

diff --git a/meta b/meta
index 1dd93561..9222ddf4 100644
--- a/meta
+++ b/meta
@@ -1,9 +1,8 @@
 Version: 1
-Previous: aedafb597f82e6b6649111f35fbb238e20a3757b
-Head: 827b4dbdb0cc47f1ccf1f8385a8636147f3b0233
+Previous: fc63ca85a100afd66667b38f06c0a01f406ec01f
+Head: 096a4c37a98b2c1bc46e0661ef8604f7a3a7ddc9
 Applied:
-  dsocket: 142a13708f69f13c6676f4d97f06ffdb6d50ec40
-  refresh-temp: 827b4dbdb0cc47f1ccf1f8385a8636147f3b0233
+  dsocket: 096a4c37a98b2c1bc46e0661ef8604f7a3a7ddc9
 Unapplied:
   udpong: 9be27dcb8cb68c71a2db871b8f25e35a494c31a3
   test-udp: f6c78ad2a26f452cf166aff1baa7b76160bd8bf7
diff --git a/patches/dsocket b/patches/dsocket
index 5f5dd8b9..7fb94281 100644
--- a/patches/dsocket
+++ b/patches/dsocket
@@ -5,6 +5,36 @@ Date:   2012-11-09 10:26:38 -0800
 
 rsocket: Add datagram support
 
+Add datagram support through the rsocket API.
+
+Datagram support is handled through an entirely different protocol and
+internal implementation than streaming sockets.  Unlike connected rsockets,
+datagram rsockets are not necessarily bound to a network (IP) address.
+A datagram socket may use any number of network (IP) addresses, including
+those which map to different RDMA devices.  As a result, a single datagram
+rsocket must support using multiple RDMA devices and ports, and a datagram
+rsocket references a single UDP socket, plus zero or more UD QPs.
+
+Rsockets uses headers inserted before user data sent over UDP sockets to
+resolve remote UD QP numbers.  When a user first attempts to send a datagram
+to a remote address (IP and UDP port), rsockets will take the following steps:
+
+1. Store the destination address into a lookup table.
+2. Resolve which local network address should be used when sending
+   to the specified destination.
+3. Allocate a UD QP on the RDMA device associated with the local address.
+4. Send the user's datagram to the remote UDP socket.
+
+A header is inserted before the user's datagram.  The header specifies the
+UD QP number associated with the local network address (IP and UDP port) of
+the send.
+
+A service thread is used to process messages received on the UDP socket.  This
+thread updates the rsocket lookup tables with the remote QPN and path record
+data.  The service thread forwards data received on the UDP socket to an
+rsocket QP.  After the remote QPN and path records have been resolved, datagram
+communication between two nodes are done over the UD QP.
+
 Signed-off-by: Sean Hefty <sean.hefty@intel.com>
 
 
diff --git a/patches/refresh-temp b/patches/refresh-temp
deleted file mode 100644
index cb32b3da..00000000
--- a/patches/refresh-temp
+++ /dev/null
@@ -1,10 +0,0 @@
-Bottom: a51fe46dbaa58743e3254a4ef2288b4490ff5d13
-Top:    a51fe46dbaa58743e3254a4ef2288b4490ff5d13
-Author: Sean Hefty <sean.hefty@intel.com>
-Date:   2012-12-18 16:01:20 -0800
-
-Refresh of dsocket
-
----
-
-