cascardo/ovs.git
9 years agoacinclude.m4: dpdk: link with -ldl if necessary
Daniele Di Proietto [Tue, 3 Jun 2014 18:29:53 +0000 (11:29 -0700)]
acinclude.m4: dpdk: link with -ldl if necessary

On some systems libintel_dpdk.a fails to link with libopenvswitch
unless -ldl is used. This should address the issue

Signed-off-by: Daniele Di Proietto <ddiproietto@vmware.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
9 years agonetflow: Fold netflow_expire() into netflow_flow_clear().
Anoob Soman [Tue, 20 May 2014 11:40:35 +0000 (12:40 +0100)]
netflow: Fold netflow_expire() into netflow_flow_clear().

netflow_flow_clear() asserted that no packets or bytes were included
in the statistics for the flow being cleared.  Before threading Open
vSwitch, this assertion was always true because netflow_expire() was
always called before calling netflow_flow_clear().  Since Open
vSwitch was threaded, however, it was possible that a packet arrived
after netflow_expire() but before netflow_flow_clear(), since each of
these function separately took the netflow mutex.

This commit fixes the problem by merging netflow_expire() into
netflow_flow_clear(), under a single acquisition of the netflow
mutex.

Signed-off-by: Anoob Soman <anoob.soman@citrix.com>
[blp@nicira.com modified the patch to remove netflow_expire() and
 rewrote the commit message]
Signed-off-by: Ben Pfaff <blp@nicira.com>
9 years agoofproto: Destroy rule in ofproto_get_vlan_usage().
Ethan Jackson [Fri, 23 May 2014 18:16:35 +0000 (11:16 -0700)]
ofproto: Destroy rule in ofproto_get_vlan_usage().

Found by inspection.

Signed-off-by: Ethan Jackson <ethan@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Flavio Leitner <fbl@redhat.com>
9 years agoofp-actions: Store cookie in network byte order in struct ofpact_learn.
Ben Pfaff [Thu, 5 Jun 2014 22:27:31 +0000 (15:27 -0700)]
ofp-actions: Store cookie in network byte order in struct ofpact_learn.

Most other code in Open vSwitch that works with flow cookies keeps them
in network byte order.  Using network byte order in struct ofpact_learn,
also, reduces the number of byte order conversions needed across the
source tree.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
9 years agoovs-ofctl: Support "send_flow_rem" in "learn" actions.
Ben Pfaff [Fri, 6 Jun 2014 04:37:04 +0000 (21:37 -0700)]
ovs-ofctl: Support "send_flow_rem" in "learn" actions.

This flag was overlooked when support for the "learn" action was added.
(It was always supported in the OpenFlow code, just not in the ovs-ofctl
interface.)

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
9 years agoovs-ofctl: Document 'cookie' argument to learn action.
Ben Pfaff [Thu, 5 Jun 2014 23:56:15 +0000 (16:56 -0700)]
ovs-ofctl: Document 'cookie' argument to learn action.

This has always been supported, but the documentation was missing.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
9 years agoofproto-dpif: Remove unused struct dpif_completion.
Ben Pfaff [Tue, 3 Jun 2014 23:54:23 +0000 (16:54 -0700)]
ofproto-dpif: Remove unused struct dpif_completion.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
9 years agoofproto-dpif-rid: Fix memory leak in recirc_id_pool_destroy().
Ben Pfaff [Fri, 6 Jun 2014 01:46:23 +0000 (18:46 -0700)]
ofproto-dpif-rid: Fix memory leak in recirc_id_pool_destroy().

recirc_id_pool_create() allocates memory but recirc_id_pool_destroy() did
not destroy it.

Found by valgrind.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
9 years agoofproto: Fix memory leak in ofproto_destroy().
Ben Pfaff [Fri, 6 Jun 2014 00:43:46 +0000 (17:43 -0700)]
ofproto: Fix memory leak in ofproto_destroy().

Found by valgrind.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
9 years agorevalidator: Replace ukey->mark with dump_seq.
Joe Stringer [Wed, 14 May 2014 04:17:25 +0000 (16:17 +1200)]
revalidator: Replace ukey->mark with dump_seq.

Rather than setting and resetting the 'mark' field in the ukey, this
patch introduces a seq to track whether a flow has been seen during the
most recent dump. This tidies the code and simplifies the logic for
detecting when flows are duplicated from the datapath.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
9 years agoofproto: Send monitor updates if a flow mod changes a rules actions
Simon Horman [Thu, 5 Jun 2014 09:54:47 +0000 (18:54 +0900)]
ofproto: Send monitor updates if a flow mod changes a rules actions

Without this change a monitor update will be sent when a flow mod changes
a rules cookie but not if only the actions are updated. This appears
to be a logic error.

I noticed this while working on implementing OpenFlow1.4 flow monitor
as an OpenFlow1.4 flow mod does not update a rules cookie.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Ben Pfaff <blp@nicira.com>
9 years agoCONTRIBUTING: Describe commonly used tags; introduce Reported-at.
Ben Pfaff [Thu, 5 Jun 2014 19:53:55 +0000 (12:53 -0700)]
CONTRIBUTING: Describe commonly used tags; introduce Reported-at.

This is partly documentation of how patches are tagged in practice in Open
vSwitch.  The bits at the end about "Reported-at:" and "VMware-BZ:" are
an attempt to influence future practices; I cannot say how successful they
will be.

I am not sure whether these key-value pairs at the end of commit messages
are actually commonly called "tags".  I'm happy to use a different term if
that one seems wrong.

Reported-by: Flavio Leitner <fbl@redhat.com>
Reported-at: http://openvswitch.org/pipermail/dev/2014-June/040952.html
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Flavio Leitner <fbl@redhat.com>
Acked-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
9 years agopoll-loop: Ignore 'wevent' in poll_fd_wait_at() on non-Windows.
Ben Pfaff [Wed, 4 Jun 2014 22:47:16 +0000 (15:47 -0700)]
poll-loop: Ignore 'wevent' in poll_fd_wait_at() on non-Windows.

'wevent' isn't actually used on non-Windows systems, but poll_fd_wait_at()
and find_poll_node() treat events with different 'wevent' as different, so
it seems better to make sure that 'wevent' doesn't matter.

Alternatively, one could ovs_assert(!wevent).  I guess that would catch
a caller accidentally swapping the 'fd' and 'wevent' arguments.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Gurucharan Shetty <gshetty@nicira.com>
9 years agostream-ssl: Always initialize wevent member, even on non-Windows.
Ben Pfaff [Thu, 5 Jun 2014 18:36:56 +0000 (11:36 -0700)]
stream-ssl: Always initialize wevent member, even on non-Windows.

Otherwise the indeterminate 'wevent' could frustrate poll_fd_wait_at()'s
attempt to merge "poll_node"s for the same fd.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Gurucharan Shetty <gshetty@nicira.com>
9 years agoflow: Fix use-after-free in flow_compose().
Ben Pfaff [Wed, 4 Jun 2014 22:42:13 +0000 (15:42 -0700)]
flow: Fix use-after-free in flow_compose().

flow_compose_l4() can cause 'b' to be reallocated, thus the network header
pointer needs to be refreshed afterward.

Found by valgrind in the IPv6 case.  I updated the IPv4 case too just in
case, and for consistency.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Andy Zhou <azhou@nicira.com>
9 years agodpif-netdev: Fix another use-after-free in port_unref().
Ben Pfaff [Wed, 4 Jun 2014 22:41:09 +0000 (15:41 -0700)]
dpif-netdev: Fix another use-after-free in port_unref().

Commit 87400a3d4cc4a (dpif-netdev: Fix use-after-free in port_unref().)
fixed one use-after-free in the common case of port_unref().  However,
there was another, similar case: if port->netdev has no rxqs, then
the netdev_close() causes port->netdev to be destroyed and thus the
following call to netdev_n_rxq() accesses freed memory.  This commit fixes
the problem.

Found by valgrind.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Andy Zhou <azhou@nicira.com>
9 years agoofproto-dpif: Fix uninitialized data in ofproto_dpif_execute_actions().
Ben Pfaff [Wed, 4 Jun 2014 22:38:34 +0000 (15:38 -0700)]
ofproto-dpif: Fix uninitialized data in ofproto_dpif_execute_actions().

The dp_hash and recirc_id fields weren't being initialized.

Found by valgrind.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Andy Zhou <azhou@nicira.com>
9 years agotests/ofproto-dpif.at: Add delay before stopping time.
Jarno Rajahalme [Thu, 5 Jun 2014 16:48:25 +0000 (09:48 -0700)]
tests/ofproto-dpif.at: Add delay before stopping time.

Add 2 second sleep before time stop to allow internal ports to
reconnect in case the initial connection attempt failed.

Bond tests sometimes persistently fail without these delays.

Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
Acked-by: Andy Zhou <azhou@nicira.com>
9 years agorevalidator: Use xcache when revalidation is required.
Joe Stringer [Thu, 5 Jun 2014 06:08:40 +0000 (06:08 +0000)]
revalidator: Use xcache when revalidation is required.

One of the reasons that xlate_cache was introduced was to ensure that
statistics were attributed to the correct rules and interfaces according
to the flow that was installed into the datapath, rather than according
to the current state of the flow table.

This patch makes the revalidators use the xlate_cache to attribute stats
when full revalidation is required, as the statistics belong to the old
ruleset. However, when revalidating, the rules may have changed while
leaving the datapath flows intact, so we still re-create the xcache at
that point.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Alex Wang <alexw@nicira.com>
9 years agorevalidator: Refactor ukey creation/lookup.
Joe Stringer [Wed, 4 Jun 2014 09:59:23 +0000 (09:59 +0000)]
revalidator: Refactor ukey creation/lookup.

This patch refactors the code around ukey creation and lookup to
simplify the code for callers. A new function ukey_acquire() combines
these functions and attempts to acquire a lock on the ukey. Failure to
acquire a lock on the ukey is usually a sign that another thread is
handling the same flow concurrently, which means the flow does not need
to be handled anyway.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
9 years agotests: Rename "ofproto-if"->"ofproto-dpif"
Joe Stringer [Wed, 4 Jun 2014 10:54:27 +0000 (10:54 +0000)]
tests: Rename "ofproto-if"->"ofproto-dpif"

It's unclear why these tests are named "ofproto-if..." unlike all of the
other ofproto-dpif tests. Rename them to be more consistent.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Simon Horman <horms@verge.net.au>
9 years agodpif-netdev: Upcall: Remove an extra memcpy of packet data.
Ryan Wilson [Wed, 4 Jun 2014 20:49:06 +0000 (13:49 -0700)]
dpif-netdev: Upcall: Remove an extra memcpy of packet data.

When a bridge of datatype type netdev receives a packet, it
copies the packet from the NIC to a buffer in userspace.
Currently, when making an upcall, the packet is again copied
to the upcall's buffer. However, this extra copy is not
necessary when the datapath exists in userspace as the upcall
can directly access the packet data.

This patch eliminates this extra copy of the packet data in
most cases. In cases where the packet may still be used later
by callers of dp_netdev_execute_actions, making a copy of the
packet data is still necessary.

This patch also adds a dpdk_buf field to 'struct ofpbuf' when
using DPDK. This field holds a pointer to the allocated DPDK
buffer in the rte_mempool. Thus, an upcall packet ofpbuf
allocated on the stack can now share data and free memory of
a rte_mempool allocated ofpbuf.

Signed-off-by: Ryan Wilson <wryan@nicira.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
9 years agonetdev-dpdk: create queues on configured NUMA node
Daniele Di Proietto [Wed, 4 Jun 2014 22:05:58 +0000 (15:05 -0700)]
netdev-dpdk: create queues on configured NUMA node

This patch makes sure that the tx and rx queues are allocated on the NUMA socket
chosen at device initalization time, instead of the NUMA socket 0.

Signed-off-by: Daniele Di Proietto <ddiproietto@vmware.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
9 years agonetdev-dpdk: receive up to NETDEV_MAX_RX_BATCH
Daniele Di Proietto [Wed, 4 Jun 2014 00:10:52 +0000 (17:10 -0700)]
netdev-dpdk: receive up to NETDEV_MAX_RX_BATCH

As per netdev-provider interface, netdev_dpdk_rxq_recv should receive at most
NETDEV_MAX_RX_BATCH.

Signed-off-by: Daniele Di Proietto <ddiproietto@vmware.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
9 years agodpif: Fix slow action handling for DP_HASH and RECIRC
Andy Zhou [Thu, 29 May 2014 00:00:48 +0000 (17:00 -0700)]
dpif: Fix slow action handling for DP_HASH and RECIRC

In case DP_HASH and RECIRC actions need to be executed in slow path,
current implementation simply don't handle them -- vswitchd simply
crashes. This patch fixes them by supply an implementation for them.

RECIRC will be handled by the datapath, same as the output action.

DP_HASH, on the other hand, is handled in the user space. Although the
resulting hash values may not match those computed by the datapath, it
is less expensive; current use case (bonding) does not require a strict
match to work properly.

Reported-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: Andy Zhou <azhou@nicira.com>
Acked-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
9 years agotimeval: Add monotonic time functionality for NetBSD and FreeBSD.
Ryan Wilson [Tue, 3 Jun 2014 05:47:15 +0000 (22:47 -0700)]
timeval: Add monotonic time functionality for NetBSD and FreeBSD.

This patch also checks the system platform as clock_gettime
could exist on different platforms but with different values of
CLOCK_MONOTONIC and different definitions of 'struct timespec'.
In this case, the system call would be expected to catch the
error, which is dangerous.

This patch ensures Linux, NetBSD and FreeBSD platforms use
clock_gettime with their corresponding correct values and
definitions. All other platforms use time.time().

Signed-off-by: Ryan Wilson <wryan@nicira.com>
Acked-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
9 years agoovs-sandbox: Use the correct make
YAMAMOTO Takashi [Wed, 4 Jun 2014 04:45:34 +0000 (13:45 +0900)]
ovs-sandbox: Use the correct make

On some platforms including NetBSD,
GNU make is usually installed as "gmake".

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Acked-by: Ben Pfaff <blp@nicira.com>
9 years agoINSTALL: Note about compiler atomics support.
Jarno Rajahalme [Wed, 4 Jun 2014 16:15:48 +0000 (09:15 -0700)]
INSTALL: Note about compiler atomics support.

OVS is slow when compiled with pthreads atomics.  Add a generic note
in INSTALL, with a reference to lib/ovs-atomic.h, where a new comment
provides additional detail.

Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
9 years agoodp-util: Do not set port mask of non-IP packets
Simon Horman [Wed, 4 Jun 2014 16:56:09 +0000 (16:56 +0000)]
odp-util: Do not set port mask of non-IP packets

In the case that an flow for an IP packet has an mpls_push action applied
the L3 and L4 portions of the flow will be cleared in flow_push_mpls().

Without this change commit_set_port_action() will set the tp_src and tp_dst
mask for the flow to all-ones because the base and flow port values no
longer match. Even though there will be no corresponding set action for the
ports; because the flow is no longer IP.

In this case where nw_proto is not part of the match this manifests
in a problem because the kernel datapath rejects flows whose masks
have non-zero values for tp_src or dp_dst if the nw_proto mask is
not all-ones.

This patch resolves this problem by having commit_set_port_action() return
without doing anything if flow->nw_proto is zero. The same logic is present
in commit_set_nw_action().

Also enhance one of the MPLS tests to exercise this logic.  The enhanced
tests inputs a UDP packet with non-zero ports rather than an IP packet with
zeroed ports: zeroed ports cause commit_set_port_action() always return
without doing anything..

Commit 691d39b ("upcall: Remove redundant xlate_actions_for_side_effects().")
causes xlate_in_init() to be called for every packet that has an upcall.
This has the effect of indirectly calling commit_set_port_action() when
translating a controller action which may not have previously been the case
depending on the flow.

The result is that the behaviour described in the changelog above can be
exercised via a minor enhancement to one of the existing MPLS tests. This
illustrates that the problem exists for the user-space datapath whereas I
had previously incorrectly assumed it only manifested when using the kernel
datapath because I had only observed it there.

Signed-off-by: Simon Horman <horms@verge.net.au>
Acked-by: Jarno Rajahalme <jrajahame@nicira.com>
9 years agoBUILD.Windows: Add a TODO section.
Gurucharan Shetty [Wed, 4 Jun 2014 14:22:48 +0000 (07:22 -0700)]
BUILD.Windows: Add a TODO section.

And mention the lack of atomics support on Windows as the
first item.

Suggested-by: Jarno Rajahalme <jrajahalme@nicira.com>
Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
Acked-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Acked-by: Ben Pfaff <blp@nicira.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
9 years agodatapath: Clean up files on distclean.
Joe Stringer [Tue, 27 May 2014 09:47:00 +0000 (09:47 +0000)]
datapath: Clean up files on distclean.

This was causing failures in 'make distcleancheck'.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
9 years agoovs-dev.py: Add option to run tests in parallel.
Joe Stringer [Wed, 4 Jun 2014 08:41:21 +0000 (08:41 +0000)]
ovs-dev.py: Add option to run tests in parallel.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
9 years agoovs-dev.py: Add option to specify which tests to run.
Joe Stringer [Wed, 4 Jun 2014 08:41:20 +0000 (08:41 +0000)]
ovs-dev.py: Add option to specify which tests to run.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
9 years agoofproto: Remove ofproto_refresh_rule().
Joe Stringer [Tue, 3 Jun 2014 09:09:59 +0000 (21:09 +1200)]
ofproto: Remove ofproto_refresh_rule().

The only user of this function was removed in the previous patch, so
remove it.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Alex Wang <alexw@nicira.com>
9 years agoofproto-dpif-xlate: Cache full flowmod for learning.
Joe Stringer [Tue, 3 Jun 2014 08:44:35 +0000 (20:44 +1200)]
ofproto-dpif-xlate: Cache full flowmod for learning.

Caching the results of xlate_learn was previously dependent on the state
of the 'may_learn' flag. This meant that if the caller did not specify
that this flow may learn, then a learn entry would not be cached.
However, the xlate_cache tends to be used on a recurring basis, so
failing to cache the learn entry can provide unexpected behaviour later
on, particularly in corner cases.

Such a corner case occurred previously:-
* Revalidation was requested.
* A flow with a learn action was dumped.
* The flow had no packets.
* The flow's corresponding xcache was cleared, and the flow revalidated.
* The flow went on to receive packets after the xcache is re-created.

In this case, the xcache would be re-created, but would not refresh the
timeouts on the learnt flow until the next time it was cleared, even if
it received more traffic. This would cause flows to time out sooner than
expected. Symptoms of this bug may include unexpected forwarding
behaviour or extraneous statistics being attributed to the wrong flow.

This patch fixes the issue by caching the entire flow_mod, including
actions, upon translating an xlate_learn action. This is used to perform
a flow_mod from scratch with the original flow, rather than simply
refreshing the rule that was created during the creation of the xcache.

Bug #1252997.

Reported-by: Scott Hendricks <shendricks@vmware.com>
Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Alex Wang <alexw@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
9 years agolib/ovs-rcu: Rename ovsrcu_init() as ovsrcu_set_hidden().
Jarno Rajahalme [Tue, 3 Jun 2014 15:35:16 +0000 (08:35 -0700)]
lib/ovs-rcu: Rename ovsrcu_init() as ovsrcu_set_hidden().

ovsrcu_init() was named after the atomic_init(), but the semantics are
different enough to warrant a different name.  Basically C11
atomic_init is defined in a way that allows the implementation to
assign the value without any syncronization, so in theory stores via
atomic_init could be seen by others after stores via atomic_set, even
if the atomic_init appeared earlier in the code.

ovsrcu_set_hidden() can be used to set an RCU protected variable when
it is not yet accessible by any active reader, but will be made
visible later via an ovsrcu_set call on some other pointer.

This patch also adds a new ovsrcu_init() that can be used to initilize
RCU protected variables when the readers are not yet executing.  The
new ovsrcu_init() is implemented with atomic_init(), so it does not
provide any kind of syncronization.

Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
Acked-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
9 years agolib/ovs-rcu: Evaluate parameters before ovsrcu_set and ovsrcu_init.
Jarno Rajahalme [Tue, 3 Jun 2014 15:35:16 +0000 (08:35 -0700)]
lib/ovs-rcu: Evaluate parameters before ovsrcu_set and ovsrcu_init.

ovsrcu_set() and ovsrcu_init() look like functions, so users are
justified in expecting the arguments to be evaluated before any of
the body of ovsrcu_set or ovsrcu_init().

With ovs-atomic-pthreads, a fallback ovs-atomics implementation used
when no C11 atomics are available or with GCC older than 4.0, the
prior definitions led to nested mutex locking when the 'VALUE'
argument was an atomic_read().  This is resolved by ensuring function
argument semantics for the parameters.  For non-GCC compilers this is
done with an inline function.  GCC implementation of ovs-rcu does not
fix the RCU variable type, so a GCC macro needs to be used instead.

Reported-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
Acked-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
9 years agoovs-rcu: Remove the extra 'typedef' keyword.
Jarno Rajahalme [Tue, 3 Jun 2014 15:35:16 +0000 (08:35 -0700)]
ovs-rcu: Remove the extra 'typedef' keyword.

'struct ovsrcu_pointer' is always used with the 'struct' keyword, so
remove the unneeded 'typedef'.

Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
Acked-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
9 years agorevalidator: Fix a build issue.
Joe Stringer [Tue, 3 Jun 2014 00:21:38 +0000 (12:21 +1200)]
revalidator: Fix a build issue.

Commit acaa8dac490cc6c36026d45f3010ec75f38ee142 (revalidator: Eliminate
duplicate flow handling.) introduced a build error. This fixes the bug.

Reported-by: Jarno Rajahalme <jrajahalme@nicira.com>
Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
9 years agorevalidator: Eliminate duplicate flow handling.
Joe Stringer [Wed, 28 May 2014 03:23:42 +0000 (15:23 +1200)]
revalidator: Eliminate duplicate flow handling.

A series of bugs have been identified recently that are caused by a
combination of the awkward flow dump API, possibility of duplicate flows
in a flow dump, and premature optimisation of the revalidator logic.
This patch attempts to simplify the revalidator logic by combining
multiple critical sections into one, which should make the state more
consistent.

The new flow of logic is:
+ Lookup the ukey.
+ If the ukey doesn't exist, create it.
+ Insert the ukey into the udpif. If we can't insert it, skip this flow.
+ Lock the ukey. If we can't lock it, skip it.
+ Determine if the ukey was already handled. If it has, skip it.
+ Revalidate.
+ Update ukey's fields (mark, flow_exists).
+ Unlock the ukey.

Previously, we would attempt process a flow without creating a ukey if
it hadn't been dumped before and it was due to be deleted. This patch
changes this to always create a ukey, allowing the ukey's
mutex to be used as the basis for preventing a flow from being handled
twice. This improves code correctness and readability.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
9 years agolib/flow: fix minimatch_extract() ICMPv6 parsing
Jarno Rajahalme [Mon, 2 Jun 2014 21:02:19 +0000 (14:02 -0700)]
lib/flow: fix minimatch_extract() ICMPv6 parsing

This patch addresses two bugs related to ICMPv6(NDP) packets:

- In miniflow_extract() push the words in the correct order
- In parse_icmpv6() use sizeof struct, not size of struct *

match_wc_init() has been modified, to include the nd_target field
when the transport layer protocol is ICMPv6

A testcase has been added to detect the bugs.

Signed-off-by: Daniele Di Proietto <ddiproietto@vmware.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
9 years agoofp-errors: Duplicate instruction error
Simon Horman [Mon, 2 Jun 2014 12:36:28 +0000 (21:36 +0900)]
ofp-errors: Duplicate instruction error

Add OFPERR_OFPBIC_DUP_INST (type = OFPET_BAD_INSTRUCTION, code = 9)
and use it for OpenFlow1.4+.

For OpenFlow1.1 - 1.3 map this error to ONFBIC_DUP_INSTRUCTION
(experimenter = ONF, type = 2600) which is proposed in
OpenFlow enhancement proposal EXT-260 "Add error
code for duplicate instruction.".

Previously ONFBIC_DUP_INSTRUCTION was used for OpenFlow1.3+.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Ben Pfaff <blp@nicira.com>
9 years agotimeval: Import ctypes Python library within a try statement.
Ryan Wilson [Sat, 31 May 2014 00:36:46 +0000 (17:36 -0700)]
timeval: Import ctypes Python library within a try statement.

Older versions of Python do not have ctypes as a default installed
package. This patch puts the 'import ctypes' statement inside a try
statement.

This fixes a bug introduced by commit 8396f (timeval: Use monotonic
time in OVS Python timeval library).

Signed-off-by: Ryan Wilson <wryan@nicira.com>
Acked-by: Alex Wang <alexw@nicira.com>
9 years agotimeval: Use monotonic time in OVS Python timeval library.
Ryan Wilson [Fri, 30 May 2014 22:38:51 +0000 (15:38 -0700)]
timeval: Use monotonic time in OVS Python timeval library.

Python's time.time() function uses the system wall clock. However,
if NTP resets the wall clock to be a time in the past, then this
causes any applications that poll block based on time, such as
ovs-xapi-sync, to poll block indefinitely since the time is
unexpectedly negative.

This patch fixes the issue by using time.monotonic() if Python's
version >= 3.3. Otherwise, the timeval module calls out to the
librt C shared library and uses the clock_gettime function with
CLOCK_MONOTONIC.

Note this is only enabled on Linux-based platforms. This has been
tested on Ubuntu 12.04 and Redhat 6.4.

Bug #1189434
Signed-off-by: Ryan Wilson <wryan@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
9 years agoprocess: block signals while spawning child processes
Ansis Atteka [Fri, 23 May 2014 21:15:28 +0000 (14:15 -0700)]
process: block signals while spawning child processes

Between fork() and execvp() calls in the process_start()
function both child and parent processes share the same
file descriptors.  This means that, if a child process
received a signal during this time interval, then it could
potentially write data to a shared file descriptor.

One such example is fatal signal handler, where, if
child process received SIGTERM signal, then it would
write data into pipe.  Then a read event would occur
on the other end of the pipe where parent process is
listening and this would make parent process to incorrectly
believe that it was the one who received SIGTERM.
Also, since parent process never reads data from this
pipe, then this bug would make parent process to consume
100% CPU by immediately waking up from the event loop.

This patch will help to avoid this problem by blocking
signals until child closes all its file descriptors.

Signed-off-by: Ansis Atteka <aatteka@nicira.com>
Reported-by: Suganya Ramachandran <suganyar@vmware.com>
Issue: 1255110

9 years agoovsdb-idl: Add coverage counters for ovsdb commit return statuses.
Ryan Wilson [Fri, 30 May 2014 06:44:37 +0000 (23:44 -0700)]
ovsdb-idl: Add coverage counters for ovsdb commit return statuses.

Signed-off-by: Ryan Wilson <wryan@nicira.com>
Acked-by: Alex Wang <alexw@nicira.com>
Signed-off-by: Alex Wang <alexw@nicira.com>
9 years agortbsd: Make rtbsd module thread-safe.
Ryan Wilson [Fri, 30 May 2014 06:35:30 +0000 (23:35 -0700)]
rtbsd: Make rtbsd module thread-safe.

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 bsd are destroyed, the rtbsd notifier is
unregistered, possibly causing memory to be freed. This causes a
race condition with the main thread which calls rtbsd_notifier_run
periodically to check for any netdev change events.

This patch makes the rtbsd module thread-safe via a mutex.

Note this patch removes rtbsd_notifier_run() in
rtbsd_notifier_register() due to locking requirements. Since the
rtbsd_notifier_run() is always run by the main thread often,
receiving stale notifications from the notifier is unlikely.

Bug #1258532
Signed-off-by: Ryan Wilson <wryan@nicira.com>
Acked-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Acked-by: Alex Wang <alexw@nicira.com>
Signed-off-by: Alex Wang <alexw@nicira.com>
9 years agoroute-table: Make route-table module thread-safe.
Ryan Wilson [Thu, 29 May 2014 21:56:09 +0000 (14:56 -0700)]
route-table: Make route-table module thread-safe.

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>
9 years agoofproto: Fix comments.
Ben Pfaff [Wed, 28 May 2014 23:27:02 +0000 (16:27 -0700)]
ofproto: Fix comments.

The comments on the "group" functions had been shamelessly copied without
significant update from the corresponding flow table functions.  This
commit fixes the errors.

This commit also removes an obsolete comment in ofopgroup_complete().

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
9 years agoofproto-provider: Fix typo in comment.
Ben Pfaff [Thu, 29 May 2014 20:33:29 +0000 (13:33 -0700)]
ofproto-provider: Fix typo in comment.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
9 years agoovs-dev.py: add option to run with dpdk
Daniele Di Proietto [Tue, 13 May 2014 03:47:48 +0000 (03:47 +0000)]
ovs-dev.py: add option to run with dpdk

Signed-off-by: Daniele Di Proietto <ddiproietto@vmware.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
9 years agoconfigure.ac: Check C99 compiler
YAMAMOTO Takashi [Thu, 29 May 2014 16:12:24 +0000 (16:12 +0000)]
configure.ac: Check C99 compiler

This ends up to add -std=gnu99 and fixes the following
compilation problem introduced by commit 08feeb75.
("lib/flow: Use C99 declaration in for statement.")

libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I ../include -I ../lib -I ./lib -Wstrict-prototypes -Wall -Wextra -Wno-sign-compare -Wpointer-arith -Wno-format-zero-length -Wswitch-enum -Wunused-parameter -Wstrict-aliasing -Wbad-function-cast -Wcast-align -Wmissing-prototypes -Wmissing-field-initializers -g -O2 -MT lib/classifier.lo -MD -MP -MF lib/.deps/classifier.Tpo -c ../lib/classifier.c -o lib/classifier.o
../lib/classifier.c: In function 'miniflow_and_mask_matches_flow':
../lib/classifier.c:1722:5: error: 'for' loop initial declarations are only allowed in C99 mode
../lib/classifier.c:1722:5: note: use option -std=c99 or -std=gnu99 to compile your code
Makefile:3013: recipe for target 'lib/classifier.lo' failed

% gcc --version
gcc (NetBSD nb1 20120916) 4.5.4
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
9 years agolib/cmap: Use atomics for all bucket data.
Jarno Rajahalme [Wed, 28 May 2014 23:56:29 +0000 (16:56 -0700)]
lib/cmap: Use atomics for all bucket data.

The documentation of the memory order argument of atomic operations
states that memory loads after an atomic load with a
memory_order_acquire cannot be moved before the atomic operation.
This still leaves open the possibility that non-atomic loads before
the atomic load could be moved after it, hence breaking down the
synchronization used for cmap_find().

This patch fixes this my using atomics (with appropriate memory_order)
also for the struct cmap_node pointer and hash values.

struct cmap_node itself is used for the pointer, since it already
contains an RCU pointer (which is atomic) for a struct cmap_node.
This also helps simplify some of the code previously dealing
separately with the cmap_node pointer in the bucket v.s. a cmap_node.

Hash values are also accessed using atomics.  Otherwise it might be
legal for a compiler to read the hash values once, and keep using the
same values through all the retries.

These should have no effect on performance.

Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
9 years agolib/cmap: Add more hmap-like functionality.
Jarno Rajahalme [Wed, 28 May 2014 23:56:29 +0000 (16:56 -0700)]
lib/cmap: Add more hmap-like functionality.

Add cmap_replace() and cmap_first(), as well as CMAP_FOR_EACH_SAFE and
CMAP_FOR_EACH_CONTINUE to make porting existing hmap using code a bit
easier.

CMAP_FOR_EACH_SAFE is useful in RCU postponed destructors, when it is
known that additional postponing is not needed.

Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
9 years agolib/ovs-rcu: Fix documentation, add ovsrcu_init().
Jarno Rajahalme [Wed, 28 May 2014 23:56:29 +0000 (16:56 -0700)]
lib/ovs-rcu: Fix documentation, add ovsrcu_init().

lib/ovs-rcu.h had some of the comments duplicated.

Add ovsrcu_init() that can be used like ovsrcu_set() when the RCU
protected pointer is not yet visible any readers.

ovs-rcu internal initialization function is renamed as ovsrcu_init_module().

Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
9 years agolib/flow: Use C99 declaration in for statement.
Jarno Rajahalme [Wed, 28 May 2014 23:56:29 +0000 (16:56 -0700)]
lib/flow: Use C99 declaration in for statement.

C99 declarations within code are allowed now.  Change the
FLOW_FOR_EACH_IN_MAP to use loop variable within the for statement.
This makes this macro more generally useful.

The loop variable name is suffixed with two underscores with the
intention that there would be a low likelihood of collision with any
of the macro parameters.

Also fix the return type of flow_get_next_in_map().

Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
9 years agoCodingStyle: Allow C99 mixing of declarations and code.
Jarno Rajahalme [Wed, 28 May 2014 23:56:29 +0000 (16:56 -0700)]
CodingStyle: Allow C99 mixing of declarations and code.

As even the MSVC 2013 now supports the C99 mixing of declarations and
code, we can now allow them in OVS code.

Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
9 years agovtep: Don't try to both distribute and distclean the manpage.
Ben Pfaff [Wed, 28 May 2014 17:36:23 +0000 (10:36 -0700)]
vtep: Don't try to both distribute and distclean the manpage.

Since the initial checkin of the vtep code, the manpage has been both
distributed and distcleaned.  That's contradictory.  This commit fixes it.

This commit also moves the vtep manpage from the source directory to the
build directory.  There's no real reason for the manpage to be in the
source directory, and it can't be if it's not distributed (because "make"
is not supposed to update the source directory in a freshly untarred
source distribution, and doing so breaks "make distcheck").

Found by "make distcheck".

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Joe Stringer <joestringer@nicira.com>
9 years agoofproto-dpif-xlate: Mark xcfgp and new_xcfg as static.
Ben Pfaff [Wed, 28 May 2014 22:21:21 +0000 (15:21 -0700)]
ofproto-dpif-xlate: Mark xcfgp and new_xcfg as static.

Found by sparse.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ryan Wilson <wryan@nicira.com>
9 years agoofproto: Fix comment on struct meter.
Ben Pfaff [Wed, 28 May 2014 18:36:05 +0000 (11:36 -0700)]
ofproto: Fix comment on struct meter.

This comment seems misleading, because it implies that the struct ends in
a flexible array member when it doesn't.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
9 years agoofproto-dpif: Remove unused flows.txt from fin_timeout test
Simon Horman [Tue, 20 May 2014 07:42:37 +0000 (16:42 +0900)]
ofproto-dpif: Remove unused flows.txt from fin_timeout test

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Ben Pfaff <blp@nicira.com>
9 years agosocket-util: Log the kernel assigned port number when asked.
Gurucharan Shetty [Mon, 19 May 2014 18:58:14 +0000 (11:58 -0700)]
socket-util: Log the kernel assigned port number when asked.

So far, we log the kernel assigned port number when the port number is
not specified. On Windows, this happens multiple times because "unix"
sockets are implemented internally via TCP ports. This means that many tests,
specially the ovs-ofctl monitor tests, need to filter out the
additional messages. Doing that is not a big deal, but I think it will
keep manifesting in future tests added by Linux developers.

With this commit, we simply don't print the kernel assigned TCP ports
on Windows when done for "unix" sockets.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
9 years agoovs-ofctl: Enable the ability to 'detach' on Windows.
Gurucharan Shetty [Fri, 16 May 2014 19:10:50 +0000 (12:10 -0700)]
ovs-ofctl: Enable the ability to 'detach' on Windows.

This is mostly for unit tests that use ovs-ofctl monitor.
service_start() creates a new process and waits till
daemonize_complete() is called by the child.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
9 years agoovs-ofctl: Flush monitored data.
Gurucharan Shetty [Fri, 16 May 2014 19:08:53 +0000 (12:08 -0700)]
ovs-ofctl: Flush monitored data.

Otherwise, on Windows unit tests, data sometimes is
not seen in output files.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
9 years agobridge: Initialize dscp for mgmt connections.
Gurucharan Shetty [Fri, 16 May 2014 19:04:00 +0000 (12:04 -0700)]
bridge: Initialize dscp for mgmt connections.

Without it, garbage values make it to set_dscp function
in Windows.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
9 years agoovsdb-monitor.at: Changes for Windows.
Gurucharan Shetty [Wed, 14 May 2014 19:48:17 +0000 (12:48 -0700)]
ovsdb-monitor.at: Changes for Windows.

ovsdb-client's 'monitor' command works with --detach such
that the parent detaches after printing initial transactions in
the database. This is a little tricky to implement
in windows. So for windows, send the process to background with
'&' and then sleep for a second to let the intial transactions
printed. (We can do the same for Linux, but it slows down the
test run)

Also let the perl script that looks at the o/p be aware of
CR LF in windows.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
9 years agoofproto-dpif-xlate: Implement RCU locking in ofproto-dpif-xlate.
Ryan Wilson [Wed, 28 May 2014 00:34:14 +0000 (17:34 -0700)]
ofproto-dpif-xlate: Implement RCU locking in ofproto-dpif-xlate.

Before, a global read-write lock protected the ofproto-dpif
/ ofproto-dpif-xlate interface.  Handler and revalidator threads
had to wait while configuration was being changed.  This patch
implements RCU locking which allows handlers and revalidators
to operate while configuration is being updated.

Signed-off-by: Ryan Wilson <wryan@nicira.com>
Acked-by: Alex Wang <alexw@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
Signed-off-by: Alex Wang <alexw@nicira.com>
9 years agolib/flow: call memcmp in miniflow_equal()
Daniele Di Proietto [Tue, 27 May 2014 22:20:08 +0000 (15:20 -0700)]
lib/flow: call memcmp in miniflow_equal()

This commit replace a while loop in miniflow_equal() with a call to
memcmp() for performace reasons.

Signed-off-by: Daniele Di Proietto <ddiproietto@vmware.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
9 years agosocket-util: Refactor unix specific code to a new file.
Gurucharan Shetty [Fri, 23 May 2014 16:35:47 +0000 (09:35 -0700)]
socket-util: Refactor unix specific code to a new file.

Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
9 years agoofp-print: Merge ofp_print_stats_{reply, request}()
Simon Horman [Tue, 27 May 2014 09:05:37 +0000 (18:05 +0900)]
ofp-print: Merge ofp_print_stats_{reply, request}()

Merge ofp_print_stats_reply() and ofp_print_stats_request()
into a single new function, ofp_print_stats().

For stats replies there should be no run-time change in behaviour.

For pre-OpenFlow1.3 stats requests there should also be
no run-time change in behaviour.

For OpenFlow1.3+ stats requests the more flag is now printed
as present. Previously ***unknown flags 0x0001*** was printed.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Ben Pfaff <blp@nicira.com>
9 years agoAUTHORS: Add Lars Kellogg-Stedman.
Ben Pfaff [Tue, 27 May 2014 15:50:09 +0000 (08:50 -0700)]
AUTHORS: Add Lars Kellogg-Stedman.

Signed-off-by: Ben Pfaff <blp@nicira.com>
9 years agorhel: support persistent mac addresses on OVS bridges
Lars Kellogg-Stedman [Fri, 23 May 2014 21:14:35 +0000 (17:14 -0400)]
rhel: support persistent mac addresses on OVS bridges

This patch adds support for RHEL-derived systems (RHEL/CentOS/Fedora)
for setting the persistent MAC address of an OVS bridge via the MACADDR
setting in the interface configuration file.

Without this change, when an administrator provides MACADDR in the
interface configuration file that address will be set in ifup-eth using
the "ip link set" command.  While this appears to work, any operation
that updates the OVS configuration will cause the MAC address to revert.

Persistent MAC addresses must be set using ovs-vsctl.

(Resubmitted with whitespace and grammar corrections)

Signed-off-by: Lars Kellogg-Stedman <lars@redhat.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Flavio Leitner <fbl@redhat.com>
9 years agoxcache: Remove unused field xc_entry.u.learn.ofproto.
Joe Stringer [Fri, 23 May 2014 04:33:50 +0000 (16:33 +1200)]
xcache: Remove unused field xc_entry.u.learn.ofproto.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Alex Wang <alexw@nicira.com>
10 years agonetdev-dpdk: use defined values for queues length
Daniele Di Proietto [Fri, 23 May 2014 23:12:44 +0000 (16:12 -0700)]
netdev-dpdk: use defined values for queues length

Signed-off-by: Daniele Di Proietto <ddiproietto@vmware.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
10 years agoupcall: Remove redundant xlate_actions_for_side_effects().
Ethan Jackson [Thu, 22 May 2014 17:53:27 +0000 (10:53 -0700)]
upcall: Remove redundant xlate_actions_for_side_effects().

As a result of commit a0bab87 (ofproto: Remove per-flow miss hash
table from upcall handler.) we're guaranteed that every packet has had
xlate_actions() called on it at least once.  Therefore, there's no
need to re-xlate slow path flows just to shove their packets through
the system.

This also may fix a bug discussed here:
http://openvswitch.org/pipermail/discuss/2014-April/013670.html

Signed-off-by: Ethan Jackson <ethan@nicira.com>
Reported-by: Murphy McCauley <murphy.mccauley@gmail.com>
Acked-by: Ben Pfaff <blp@nicira.com>
10 years agomakefile.am: Apply printf check only to OVS userspace.
Jesse Gross [Fri, 23 May 2014 02:15:26 +0000 (19:15 -0700)]
makefile.am: Apply printf check only to OVS userspace.

We shouldn't restrict printf specifiers in kernel or third party
code.

Signed-off-by: Jesse Gross <jesse@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
10 years agoofproto-dpif-xlate: Coding style fix for bucket_is_alive()
Andy Zhou [Thu, 22 May 2014 16:35:36 +0000 (09:35 -0700)]
ofproto-dpif-xlate: Coding style fix for bucket_is_alive()

Signed-off-by: Andy Zhou <azhou@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
10 years agoofproto-dpif-xlate: Simplify group_is_alive
Andy Zhou [Thu, 22 May 2014 16:24:23 +0000 (09:24 -0700)]
ofproto-dpif-xlate: Simplify group_is_alive

Signed-off-by: Andy Zhou <azhou@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
10 years agoofproto-dpif: remove a redundant assignment
Andy Zhou [Thu, 22 May 2014 16:04:09 +0000 (09:04 -0700)]
ofproto-dpif: remove a redundant assignment

Signed-off-by: Andy Zhou <azhou@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
10 years agoofproto: Remove ofproto_group_write_lookup()
Andy Zhou [Thu, 22 May 2014 06:57:21 +0000 (23:57 -0700)]
ofproto: Remove ofproto_group_write_lookup()

ofproto_group_write_lookup() slightly different from
ofproto_group_lookup() in handling reference counting.
Currently, it has only one caller: modify_group().
It seems the abstraction is not adding value here.

Remove the function, along with some refactoring, makes modify_group()
easier to understand.

Signed-off-by: Andy Zhou <azhou@nicira.com>
Acked-by: Ryan Wilson <wryan@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
10 years agobridge: Add test that ports that disappear get added back to the datapath.
Ben Pfaff [Thu, 22 May 2014 16:36:00 +0000 (09:36 -0700)]
bridge: Add test that ports that disappear get added back to the datapath.

The test added in this commit would have caught the bug fixed by commit
96be8de595150 (bridge: When ports disappear from a datapath, add them
back.).  With that commit reverted, the new test fails.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Gurucharan Shetty <gshetty@nicira.com>
10 years agoofproto: per-table statistics
Simon Horman [Thu, 22 May 2014 05:44:36 +0000 (14:44 +0900)]
ofproto: per-table statistics

Add per-table counters. This resolves some short-comings
in the data provided in a table stats reply message.

* Lookups and matches are calculated based on table
  accesses rather than datapath flow hits and misses.

* Lookups and matches are credited to the table where they
  occurred rather than all being credited to table 0.

These problems were observed when running make check-ryu
and this patch allows many of its tester.py match checks
to pass.

Reviewed-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Ben Pfaff <blp@nicira.com>
10 years agoseq: Attribute wakeups to seq_wait()'s caller, not to seq_wait() itself.
Ben Pfaff [Wed, 30 Apr 2014 21:34:27 +0000 (14:34 -0700)]
seq: Attribute wakeups to seq_wait()'s caller, not to seq_wait() itself.

The poll_loop code has a feature that, when turned on manually or
automatically (due to high CPU use), logs the source file and line number
of the code that caused a thread to wake up from poll().  Until now, when
a function calls seq_wait(), the source file and line number logged was
the code inside seq_wait().  seq_wait() has many callers, so that
information is not as useful as it could be.  This commit changes the
source file and line number used to be that of seq_wait()'s caller.

I found this useful for debugging.

Signed-off-by: Ben Pfaff <blp@nicira.com>
10 years agoofproto: Add const to immutable members of ofgroup.
Andy Zhou [Thu, 22 May 2014 04:08:01 +0000 (21:08 -0700)]
ofproto: Add const to immutable members of ofgroup.

Signed-off-by: Andy Zhou <azhou@nicira.com>
Acked-by: Ryan Wilson <wryan@nicira.com>
10 years agoFAQ: Add a list of upstream kernel version supporting tunneling.
Jesse Gross [Thu, 22 May 2014 02:04:44 +0000 (19:04 -0700)]
FAQ: Add a list of upstream kernel version supporting tunneling.

Reported-by: Ben Pfaff <blp@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
10 years agoTODO: Remove "OpenFlow Group Bucket Stats" from TODO list
Ryan Wilson [Thu, 22 May 2014 03:11:09 +0000 (20:11 -0700)]
TODO: Remove "OpenFlow Group Bucket Stats" from TODO list

Signed-off-by: Ryan Wilson <wryan@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
10 years agoofproto-dpif-xlate: Fix a bug.
Alex Wang [Thu, 22 May 2014 03:45:24 +0000 (20:45 -0700)]
ofproto-dpif-xlate: Fix a bug.

Commit b256dc525c8 (ofproto-dpif-xlate: Cache xlate_actions() effects.)
caches the variables needed for refreshing mac-learning table in
xlate_normal().  Wherein, the cache entry always records reference to
the original 'ofproto'.

When patch port is used to connect two 'ofproto's, packet goes through the
patch port will have two mac-learning cache entries created for each
'ofproto'.  So, each entry should reference to the corresponding 'ofproto'.
However, due to the bug mentioned above, all cache entries will refer to the
same 'ofproto'.  Subsequently, the mac-learning tables can be corrupted, which
causes connection loss.

This commit fixes the bug by making each cache entry refer to the correct
'ofproto'.

Signed-off-by: Alex Wang <alexw@nicira.com>
Acked-by: Joe Stringer <joestringer@nicira.com>
10 years agotests: Add tests for Openflow group stats
Andy Zhou [Mon, 19 May 2014 21:20:40 +0000 (21:20 +0000)]
tests: Add tests for Openflow group stats

Signed-off-by: Andy Zhou <azhou@nicira.com>
Signed-off-by: Ryan Wilson <wryan@nicira.com>
Acked-by: Alex Wang <alexw@nicira.com>
Signed-off-by: Andy Zhou <azhou@nicira.com>
10 years agoofproto: Add support for Openflow group and bucket stats.
Ryan Wilson [Thu, 22 May 2014 10:47:13 +0000 (10:47 +0000)]
ofproto: Add support for Openflow group and bucket stats.

Signed-off-by: Ryan Wilson <wryan@nicira.com>
Acked-by: Andy Zhou <azhou@nicira.com>
Signed-off-by: Andy Zhou <azhou@nicira.com>
10 years agoofproto: Add reference count for Openflow groups.
Ryan Wilson [Thu, 22 May 2014 08:12:02 +0000 (08:12 +0000)]
ofproto: Add reference count for Openflow groups.

When adding support for OpenFlow group and bucket stats, a group entry is added
to the xlate_cache. If the main thread removes the group from an ofproto, we
need to guarantee that the group remains accessible to users of
xlate_group_actions and the xlate_cache, as the xlate_cache will not be cleaned
up until the corresponding datapath flows are revalidated.

Before, modify_group could change the bucket list for a group. With group
entries in the xlate_cache, this could leave already-freed bucket pointers in
the cache. Modify_group now recreates the group and replaces the old group in
ofproto's ofgroup hash map. Thus, any subsequent group lookup will find the new
group while the old group and buckets will still exist until the xlate_cache
entries unref the group.

Since ofgroup's properties were only written in-place by modify_group and this
is no longer done, this eliminates the need for ofgroup's lock.

Signed-off-by: Ryan Wilson <wryan@nicira.com>
Signed-off-by: Andy Zhou <azhou@nicira.com>
10 years agodpif-netdev: Use cmap for ports.
Ben Pfaff [Tue, 20 May 2014 20:21:09 +0000 (13:21 -0700)]
dpif-netdev: Use cmap for ports.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
10 years agodpif-netdev: Fix memory leak.
Ben Pfaff [Wed, 21 May 2014 00:07:56 +0000 (17:07 -0700)]
dpif-netdev: Fix memory leak.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
10 years agodpif-netdev: Fix use-after-free in port_unref().
Ben Pfaff [Wed, 21 May 2014 00:09:59 +0000 (17:09 -0700)]
dpif-netdev: Fix use-after-free in port_unref().

When the last rxq is closed (which releases the rxq's internal reference
to its netdev) the next call to netdev_n_rxq() accesses freed memory.

Found by valgrind.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Reported-by: Jarno Rajahalme <jrajahalme@nicira.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
10 years agocmap: Fix memory ordering for counter_changed().
Ben Pfaff [Wed, 21 May 2014 14:43:10 +0000 (07:43 -0700)]
cmap: Fix memory ordering for counter_changed().

Release memory ordering only affects visibility of stores, and is not
allowed on a memory read.  Some compilers enforce this, making this code
fail to compile.

Reported-by: Alex Wang <alexw@nicira.com>
Reported-by: Kmindg G <kmindg@gmail.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
10 years agotests: Fix an ofproto test.
Joe Stringer [Tue, 20 May 2014 00:44:52 +0000 (12:44 +1200)]
tests: Fix an ofproto test.

This was previously logging that there was no such function, but passing
the test anyway.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
10 years agorevalidator: Re-fix a flow duplication bug.
Joe Stringer [Wed, 21 May 2014 02:49:04 +0000 (14:49 +1200)]
revalidator: Re-fix a flow duplication bug.

Commit 73a3c4757e59 (revalidator: Prevent handling the same flow twice.)
fixed a bug where duplicated flows could be deleted twice. Commit
7d1700980b5d (ofproto-dpif-upcall: Remove the flow_dumper thread.)
partially re-introduced this bug.

The bug would cause the logs to show messages such as
"failed to flow_get (No such file or directory) skb_priority(0),..."
"failed to flow_del (No such file or directory) skb_priority(0),..."

This patch fixes the issue again.

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Alex Wang <alexw@nicira.com>
10 years agoovs-vsctl: Add an example of how to limit the flows in a flow table.
Ben Pfaff [Wed, 30 Apr 2014 17:58:47 +0000 (10:58 -0700)]
ovs-vsctl: Add an example of how to limit the flows in a flow table.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Gurucharan Shetty <gshetty@nicira.com>
10 years agorhel: Remove creation of fake bond interface
Anoob Soman [Tue, 25 Mar 2014 12:32:03 +0000 (12:32 +0000)]
rhel: Remove creation of fake bond interface

fake-iface, option to add-bond, was added for compatibility
reasons and need not be used otherwise.

Signed-off-by: Anoob Soman <anoob.soman@citrix.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
10 years agoFAQ: Add an entry about datapath-id
YAMAMOTO Takashi [Tue, 20 May 2014 02:07:02 +0000 (11:07 +0900)]
FAQ: Add an entry about datapath-id

Acked-by: Ben Pfaff <blp@nicira.com>
Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
10 years agonetdev-bsd: Fix a whitespace
YAMAMOTO Takashi [Mon, 19 May 2014 08:06:45 +0000 (17:06 +0900)]
netdev-bsd: Fix a whitespace

Acked-by: Ben Pfaff <blp@nicira.com>
Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>