lib/rculist: New RCU-iterator, single-writer doubly-linked list.

rculist allows concurrent lockless list iteration, while a writer may
be modifying the list.  Multiple writers can be supported by using a
mutex in addition to rculist.

First user will be added in a following patch.

Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
tests/test-classifier: Properly use ovsrcu_postpone.

Following patches add stricter checks of RCU memory management of
rules removed from a classifier.  This patch properly postpones
freeing of 'struct cls_rule's that have been removed from a
classifier.

Also remove all the rules from classifier before destructing it in
test_rule_replacement().

Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
docker: Update documentation to reflect risks of retiring ovs-docker.

Requested-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
Acked-by: Flavio Leitner <fbl@redhat.com>
netdev-linux: Add support for 64-bit network device stats.

Reported-by: Andrey Korolyov <andrey@xdel.ru>
Tested-by: Andrey Korolyov <andrey@xdel.ru>
Signed-off-by: Ben Pfaff <blp@nicira.com>
ovs-vsctl: Allow referring to rows whose names are UUIDs by those names.

Every row in the database has a UUID, generated by the database server.
Rows in most tables also have a user-assigned name (e.g. a bridge or port
or interface name).  The ovs-vsctl database commands (e.g. "set", "get",
"list", ...) accept both UUIDs and names, but until now if a command's
argument had the form of a UUID, then it had to be the database-assigned
UUID for a row; that is, ovs-vsctl did not check whether it was the name
of a row.  This commit changes that: a UUID argument to a database command
is now first checked against database UUIDs then, if it is not a database
UUID, it is checked as the name of a row.

This is prompted by Windows integration with OpenStack, which uses UUIDs
as port names.

CC: Nithin Raju <nithin@vmware.com>
Requested-by: Gurucharan Shetty <gshetty@nicira.com>
Acked-by: Gurucharan Shetty <gshetty@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
vswitch.xml: Fix spelling errors in documentation.

Signed-off-by: Ben Pfaff <blp@nicira.com>
vswitch.xml: Improve IPFIX documentation.

A coworker came by yesterday with a question about IPFIX in Open vSwitch.
I did not know the answer, so I read the documentation.  The documentation
was harder to understand than necessary.  This change should make it easier
to understand by providing an overview of the two forms of configuration
and grouping together the columns that apply only to one form of
configuration.

Signed-off-by: Ben Pfaff <blp@nicira.com>
debian: Fix broken build during package creation.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>