Refactor ovs-router so that it can work with non-Linux platforms
at least in some extent, using the existing route-table code as
a fallback. Known restriction: for such platforms, "ovs/router/show"
command does not show "Cached" kernel routes.
Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Since dpif registering for routing table at initialization
there is no need to unregister it. Following patch removes
support for turning routing table notifications on and off.
Due to this change OVS always listens for these
notifications.
Reported-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Split the linux-specific part of ovs-router.h
into ovs-router-linux.h.
The breakage was introduced by
commit d9b4ebc5d1
("route-table: Use classifier to store routing table.")
Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Acked-by: Ben Pfaff <blp@nicira.com>
ovs_router_unixctl_register() is called from ofproto layer.
But is not defined for all platform. Following patch define
stub to fix compilation error.
Reported-by: Eitan Eliahu <eliahue@vmware.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>-
Rather than using hmap for storing routing entries we can directly use
classifier which has support for priority and wildcard entries.
This makes route lookup lockless. This help when we use route lookup
for native tunneling.
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Thomas Graf <tgraf@noironetworks.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
Due to patch fe83f8 (netdev: Remove netdev from global shash when
the user is changing interface configuration), netdevs can be
destructed and deallocated by revalidator and RCU threads. When
netdevs with class vport are destroyed, the routing table is
unregistered, possibly causing memory to be freed. This causes a
race condition with the main thread which calls route_table_run
periodically to check for routing table updates.
This patch makes the route-table module thread-safe via a mutex.
Bug #1258532
Signed-off-by: Ryan Wilson <wryan@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
Signed-off-by: Alex Wang <alexw@nicira.com>
Commit 3e912ffcbb (netdev: Add 'change_seq' back to netdev.) added per-
netdev change number for indicating status change. Future commits used
this change number to optimize the netdev status update to database.
However, the work also introduced the bug in the following scenario:
- assume interface eth0 has address 1.2.3.4, eth1 has adddress 10.0.0.1.
- assume tunnel port p1 is set with remote_ip=10.0.0.5.
- after setup, 'ovs-vsctl list interface p1 status' should show the
'tunnel_egress_iface="eth1"'.
- now if the address of eth1 is change to 0 via 'ifconfig eth1 0'.
- expectedly, after change, 'ovs-vsctl list interface p1 status' should
show the 'tunnel_egress_iface="eth0"'
However, 'tunnel_egress_iface' will not be updated on current master.
This is in that, the 'netdev-vport' module corresponding to p1 does
not react to routing related changes.
To fix the bug, this commit adds a change sequence number in the route-
table module and makes netdev-vport check the sequence number for
tunnel status update.
Bug #1240626
Signed-off-by: Alex Wang <alexw@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
The ESX userspace looks quite a bit like linux, but has some key
differences which need to be specially handled in the build. To
distinguish between ESX and systems which use the linux datapath
module, this patch adds two new macros "ESX" and "LINUX_DATAPATH".
It uses these macros to disable building code on ESX which only
applies to a true Linux environment. In addition, it adds a new
route-table-stub implementation which is required for the build to
complete successfully on ESX.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
