X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=INSTALL;h=4c54b59d3de9b160e0b8e5377ea3c535adc89812;hb=bd3ad2c3508aaf7283f3ee041ecd3e5108471b21;hp=28bc1a0ffb5df30e5beea44dde26eca6b93b95b5;hpb=4e375050c660618e04886b2c4dd47209a2e8ace1;p=sliver-openvswitch.git

diff --git a/INSTALL b/INSTALL
index 28bc1a0ff..4c54b59d3 100644
--- a/INSTALL
+++ b/INSTALL
@@ -18,8 +18,13 @@ you will need the following software:
 
     - GNU make.
 
-    - The GNU C compiler.  We generally test with version 4.1, 4.2, or
-      4.3.
+    - A C compiler, such as:
+
+        * GCC 4.x.
+
+        * Clang.  Clang 3.4 and later provide useful static semantic
+          analysis and thread-safety checks.  For Ubuntu, there are
+          nightly built packages available on clang's website.
 
     - libssl, from OpenSSL, is optional but recommended if you plan to
       connect the Open vSwitch to an OpenFlow controller.  libssl is
@@ -49,9 +54,9 @@ INSTALL.userspace for more information.
       NET_ACT_POLICE, either built-in or as modules.  (NET_CLS_POLICE is
       obsolete and not needed.)
 
-      If GRE tunneling is being used it is recommended that the kernel
-      be compiled with IPv6 support (CONFIG_IPV6).  This allows for
-      special handling (such as path MTU discovery) of IPv6 packets.
+      To use GRE tunneling on Linux 2.6.37 or newer, kernel support
+      for GRE must be compiled in or available as a module
+      (CONFIG_NET_IPGRE_DEMUX).
 
       To configure HTB or HFSC quality of service with Open vSwitch,
       you must enable the respective configuration options.
@@ -107,6 +112,10 @@ installing the following to obtain better warnings:
 
     - GNU make.
 
+    - clang, version 3.4 or later
+
+Also, you may find the ovs-dev script found in utilities/ovs-dev.py useful.
+
 Installation Requirements
 -------------------------
 
@@ -171,6 +180,10 @@ Prerequisites section, follow the procedure below to build.
 
       % ./configure CC=gcc-4.2
 
+   To use 'clang' compiler:
+
+      % ./configure CC=clang
+
    To build the Linux kernel module, so that you can run the
    kernel-based switch, pass the location of the kernel build
    directory on --with-linux.  For example, to build for a running
@@ -209,15 +222,15 @@ Prerequisites section, follow the procedure below to build.
 6. Run "make install" to install the executables and manpages into the
    running system, by default under /usr/local.
 
-7. If you built kernel modules, you may load them with "insmod", e.g.:
+7. If you built kernel modules, you may install and load them, e.g.:
 
-      % insmod datapath/linux/openvswitch.ko
+      % make modules_install
+      % /sbin/modprobe openvswitch 
 
-   You may need to specify a full path to insmod, e.g. /sbin/insmod.
    To verify that the modules have been loaded, run "/sbin/lsmod" and
    check that openvswitch is listed.
 
-   If the "insmod" operation fails, look at the last few kernel log
+   If the "modprobe" operation fails, look at the last few kernel log
    messages (e.g. with "dmesg | tail"):
 
       - The message "openvswitch: exports duplicate symbol
@@ -264,11 +277,6 @@ Prerequisites section, follow the procedure below to build.
    you do not understand what this means or do not know if your driver
    will work, do not set this.
 
-   Once you verify that the kernel modules load properly, you should
-   install them:
-
-      % make modules_install
-
 8. Initialize the configuration database using ovsdb-tool, e.g.:
 
       % mkdir -p /usr/local/etc/openvswitch
@@ -286,10 +294,10 @@ any managers specified in the database itself, and to use the SSL
 configuration in the database:
 
       % ovsdb-server --remote=punix:/usr/local/var/run/openvswitch/db.sock \
-                     --remote=db:Open_vSwitch,manager_options \
-                     --private-key=db:SSL,private_key \
-                     --certificate=db:SSL,certificate \
-                     --bootstrap-ca-cert=db:SSL,ca_cert \
+                     --remote=db:Open_vSwitch,Open_vSwitch,manager_options \
+                     --private-key=db:Open_vSwitch,SSL,private_key \
+                     --certificate=db:Open_vSwitch,SSL,certificate \
+                     --bootstrap-ca-cert=db:Open_vSwitch,SSL,ca_cert \
                      --pidfile --detach
 
 (If you built Open vSwitch without SSL support, then omit