Thomas Goirand [Sat, 21 Mar 2020 10:45:13 +0000 (11:45 +0100)]
* Replace the *.pid by a find command in logrotate file, so it's not failing
if no pid file is present (Closes: #954202), thanks to Benjamin Drung for
bug report and patch.
Ilya Maximets [Thu, 6 Feb 2020 13:24:23 +0000 (14:24 +0100)]
netdev-dpdk: Don't enable offloading on HW device if not requested.
DPDK drivers has different implementations of transmit functions.
Enabled offloading may cause driver to choose slower variant
significantly affecting performance if userspace TSO wasn't requested.
Fixes: 29cf9c1b3b9c ("userspace: Add TCP Segmentation Offload support") Reported-by: David Marchand <david.marchand@redhat.com> Acked-by: David Marchand <david.marchand@redhat.com> Acked-by: Flavio Leitner <fbl@sysclose.org> Acked-by: Kevin Traynor <ktraynor@redhat.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Flavio Leitner [Mon, 3 Feb 2020 21:45:50 +0000 (18:45 -0300)]
netdev-linux: Prepend the std packet in the TSO packet
Usually TSO packets are close to 50k, 60k bytes long, so to
to copy less bytes when receiving a packet from the kernel
change the approach. Instead of extending the MTU sized
packet received and append with remaining TSO data from
the TSO buffer, allocate a TSO packet with enough headroom
to prepend the std packet data.
Fixes: 29cf9c1b3b9c ("userspace: Add TCP Segmentation Offload support") Suggested-by: Ben Pfaff <blp@ovn.org> Signed-off-by: Flavio Leitner <fbl@sysclose.org> Signed-off-by: Ben Pfaff <blp@ovn.org>
David Marchand [Tue, 4 Feb 2020 21:28:26 +0000 (22:28 +0100)]
netdev-dpdk: Fix port init when lacking Tx offloads for TSO.
The check on TSO capability did not ensure ip checksum, tcp checksum and
TSO tx offloads were available which resulted in a port init failure
(example below with a ena device):
*2020-02-04T17:42:52.976Z|00084|dpdk|ERR|Ethdev port_id=0 requested Tx
offloads 0x2a doesn't match Tx offloads capabilities 0xe in
rte_eth_dev_configure()*
Fixes: 29cf9c1b3b9c ("userspace: Add TCP Segmentation Offload support") Reported-by: Ravi Kerur <rkerur@gmail.com> Signed-off-by: David Marchand <david.marchand@redhat.com> Acked-by: Kevin Traynor <ktraynor@redhat.com> Acked-by: Flavio Leitner <fbl@sysclose.org> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Yi-Hung Wei [Fri, 20 Dec 2019 17:51:08 +0000 (09:51 -0800)]
conntrack: Fix conntrack new state
In connection tracking system, a connection is established if we
see packets from both directions. However, in userspace datapath's
conntrack, if we send a connection setup packet in one direction
twice, it will make the connection to be in established state.
This patch fixes the aforementioned issue, and adds a system traffic
test for UDP and TCP traffic to avoid regression.
Fixes: a489b16854b59 ("conntrack: New userspace connection tracker.") Signed-off-by: Yi-Hung Wei <yihung.wei@gmail.com> Signed-off-by: William Tu <u9012063@gmail.com>
John Hurley [Thu, 19 Dec 2019 14:58:43 +0000 (14:58 +0000)]
tc: handle packet mark of zero
Openstack may set an skb mark of 0 in tunnel rules. This is considered to
be an unused/unset value. However, it prevents the rule from being
offloaded.
Check if the key value of the skb mark is 0 when it is in use (mask is
set to all ones). If it is then ignore the field and continue with TC offload.
Only the exact-match case is covered by this patch as it addresses the
Openstack use-case and seems most robust against feature evolution: f.e. in
future there may exist hardware offload scenarios where an operation, such
as a BPF offload, sets the SKB mark before proceeding tho the in-HW OVS.
datapath.
Signed-off-by: John Hurley <john.hurley@netronome.com> Co-Authored-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: Simon Horman <simon.horman@netronome.com> Acked-by: Aaron Conole <aconole@redhat.com>
Ilya Maximets [Thu, 23 Jan 2020 18:10:05 +0000 (19:10 +0100)]
dpif: Fix dp_extra_info leak by reworking the allocation scheme.
dpctl module leaks the 'dp_extra_info' in case the dumped flow doesn't
fit the dump filter while executing dpctl/dump-flows and also while
executing dpctl/get-flow.
This is already a 3rd attempt to fix all the leaks and incorrect usage
of this string that definitely indicates poor initial design of the
feature.
Flow dump/get documentation clearly states that the caller does not own
the data provided in dpif_flow. Datapath still owns all the data and
promises to not free/modify it until the next quiescent period, however
we're requesting the caller to free 'dp_extra_info' and this obviously
breaks the rules.
This patch fixes the issue by by storing 'dp_extra_info' within
'struct dp_netdev_flow' making datapath to own it. 'dp_netdev_flow'
is RCU-protected, so it will be valid until the next quiescent period.
Fixes: 0e8f5c6a38d0 ("dpif-netdev: Modified ovs-appctl dpctl/dump-flows command") Tested-by: Emma Finn <emma.finn@intel.com> Acked-by: Emma Finn <emma.finn@intel.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Ciara Loftus [Mon, 20 Jan 2020 13:09:36 +0000 (13:09 +0000)]
Documentation: add notes for TSO & i40e
When using TSO in OVS-DPDK with an i40e device, the following
patch is required for DPDK, which fixes an issue on the TSO path:
https://patches.dpdk.org/patch/64136/
Document this as a limitation until a DPDK release with the fix
included is supported by OVS.
Also, document best known methods for performance tuning when
testing TSO with the tool iperf.
Ilya Maximets [Fri, 17 Jan 2020 22:00:05 +0000 (23:00 +0100)]
dpif: Fix leak and usage of uninitialized dp_extra_info.
'dpif_probe_feature'/'revalidate' doesn't free the 'dp_extra_info'
string. Also, all the implementations of dpif_flow_get() should
initialize the value to avoid printing/freeing of random memory.
30 bytes in 1 blocks are definitely lost in loss record 323 of 889
at 0x483AD19: realloc (vg_replace_malloc.c:836)
by 0xDDAD89: xrealloc (util.c:149)
by 0xCE1609: ds_reserve (dynamic-string.c:63)
by 0xCE1A90: ds_put_format_valist (dynamic-string.c:161)
by 0xCE19B9: ds_put_format (dynamic-string.c:142)
by 0xCCCEA9: dp_netdev_flow_to_dpif_flow (dpif-netdev.c:3170)
by 0xCCD2DD: dpif_netdev_flow_get (dpif-netdev.c:3278)
by 0xCCEA0A: dpif_netdev_operate (dpif-netdev.c:3868)
by 0xCDF81B: dpif_operate (dpif.c:1361)
by 0xCDEE93: dpif_flow_get (dpif.c:1002)
by 0xCDECF9: dpif_probe_feature (dpif.c:962)
by 0xC635D2: check_recirc (ofproto-dpif.c:896)
by 0xC65C02: check_support (ofproto-dpif.c:1567)
by 0xC63274: open_dpif_backer (ofproto-dpif.c:818)
by 0xC65E3E: construct (ofproto-dpif.c:1605)
by 0xC4D436: ofproto_create (ofproto.c:549)
by 0xC3931A: bridge_reconfigure (bridge.c:877)
by 0xC3FEAC: bridge_run (bridge.c:3324)
by 0xC4551D: main (ovs-vswitchd.c:127)
CC: Emma Finn <emma.finn@intel.com> Fixes: 0e8f5c6a38d0 ("dpif-netdev: Modified ovs-appctl dpctl/dump-flows command") Signed-off-by: Ilya Maximets <i.maximets@ovn.org> Acked-by: Roi Dayan <roid@mellanox.com>
Yi-Hung Wei [Sat, 4 Jan 2020 01:13:26 +0000 (17:13 -0800)]
netdev-afxdp: NUMA-aware memory allocation for XSK related memory.
Currently, the AF_XDP socket (XSK) related memory are allocated by main
thread in the main thread's NUMA domain. With the patch that detects
netdev-linux's NUMA node id, the PMD thread of AF_XDP port will be run on
the AF_XDP netdev's NUMA domain. If the net device's NUMA domain
is different from the main thread's NUMA domain, we will have two
cross-NUMA memory accesses (netdev <-> memory, memory <-> CPU).
This patch addresses the aforementioned issue by allocating
the memory in the net device's NUMA domain.
Signed-off-by: Yi-Hung Wei <yihung.wei@gmail.com> Acked-by: William Tu <u9012063@gmail.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
William Tu [Sat, 4 Jan 2020 01:13:25 +0000 (17:13 -0800)]
netdev-linux: Detect numa node id.
The patch detects the numa node id from the name of the netdev,
by reading the '/sys/class/net/<devname>/device/numa_node'.
If not available, ex: virtual device, or any error happens,
return numa id 0. Currently only the afxdp netdev type uses it,
other linux netdev types are disabled due to no use case.
Signed-off-by: William Tu <u9012063@gmail.com> Acked-by: Eelco Chaudron <echaudro@redhat.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Flavio Leitner [Fri, 17 Jan 2020 21:47:55 +0000 (18:47 -0300)]
userspace: Add TCP Segmentation Offload support
Abbreviated as TSO, TCP Segmentation Offload is a feature which enables
the network stack to delegate the TCP segmentation to the NIC reducing
the per packet CPU overhead.
A guest using vhostuser interface with TSO enabled can send TCP packets
much bigger than the MTU, which saves CPU cycles normally used to break
the packets down to MTU size and to calculate checksums.
It also saves CPU cycles used to parse multiple packets/headers during
the packet processing inside virtual switch.
If the destination of the packet is another guest in the same host, then
the same big packet can be sent through a vhostuser interface skipping
the segmentation completely. However, if the destination is not local,
the NIC hardware is instructed to do the TCP segmentation and checksum
calculation.
It is recommended to check if NIC hardware supports TSO before enabling
the feature, which is off by default. For additional information please
check the tso.rst document.
Timothy Redaelli [Thu, 16 Jan 2020 13:21:47 +0000 (14:21 +0100)]
Documentation: Fix building with Python 3.9
open(), io.open(), codecs.open() and fileinput.FileInput no longer accept 'U'
("universal newline") in the file mode.
This flag was deprecated since Python 3.3.
In Python 3, the "universal newline" is used by default when a file is open
in text mode.
Ophir Munk [Thu, 9 Jan 2020 07:46:47 +0000 (07:46 +0000)]
dpif-netdev: Update offloaded flows statistics.
In case a flow is HW offloaded, packets do not reach the SW, thus not
counted for statistics. Use netdev flow get API in order to update the
statistics of flows by the HW statistics.
Co-authored-by: Eli Britstein <elibr@mellanox.com> Signed-off-by: Ophir Munk <ophirmu@mellanox.com> Reviewed-by: Oz Shlomo <ozsh@mellanox.com> Signed-off-by: Eli Britstein <elibr@mellanox.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Eli Britstein [Thu, 9 Jan 2020 07:46:46 +0000 (07:46 +0000)]
dpctl: Support dump-flows filters "dpdk" and "partially-offloaded".
Flows that are offloaded via DPDK can be partially offloaded (matches
only) or fully offloaded (matches and actions). Set partially offloaded
display to (offloaded=partial, dp:ovs), and fully offloaded to
(offloaded=yes, dp:dpdk). Also support filter types "dpdk" and
"partially-offloaded".
Signed-off-by: Eli Britstein <elibr@mellanox.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Eli Britstein [Thu, 9 Jan 2020 07:46:44 +0000 (07:46 +0000)]
netdev-offload-dpdk: Framework for actions offload.
Currently HW offload is accelerating only the rule matching sequence.
Introduce a framework for offloading rule actions as a pre-step for
processing the rule actions in HW. In case of a failure, fallback to the
legacy partial offload scheme.
Note: a flow will be fully offloaded only if it can process all its
actions in HW.
Signed-off-by: Eli Britstein <elibr@mellanox.com> Reviewed-by: Oz Shlomo <ozsh@mellanox.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Eli Britstein [Thu, 9 Jan 2020 07:46:43 +0000 (07:46 +0000)]
netdev-offload-dpdk: Return UFID-rte_flow entry in find method.
Change the find method to return the whole entry of UFID-rte_flow
association instead of only the rte_flow field in it, as a pre-step
towards adding and using more fields into that map entry.
Signed-off-by: Eli Britstein <elibr@mellanox.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Instead of statically allocated pattern items on the stack, dynamically
allocate only the required items while parsing the matches, to simplify
the parsing and make it self-contained, without need of external types,
making it easier to support more matches in the future.
Signed-off-by: Eli Britstein <elibr@mellanox.com> Reviewed-by: Oz Shlomo <ozsh@mellanox.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Action item data structures are pointed by rte_flow_action items.
Refactor the code to free the data structures when freeing the
rte_flow_action items, allowing simpler future actions simpler to add to
the code.
Signed-off-by: Eli Britstein <elibr@mellanox.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Ilya Maximets [Wed, 15 Jan 2020 17:11:51 +0000 (18:11 +0100)]
dpif-netdev: Make datapath port mutex recursive.
Upcoming HW offloading will request flow statistics from the dpdk
offloading module. This operation requires holding datapath port
mutex. However, there is a possible scenario in which flow deletion
happens during datapath reconfiguration process and the mutex already
acquired:
This happens while removing the last port of a particular PMD thread.
Reconfiguration process decides that we need to remove current PMD
thread and calls datapath purge callback in order to clean up resources
assigned to it. This turns into flow removal and flow_del() tries to
request statistics.
Turning the dp->port_mutex into recursive version as a quick fix for
this issue. Better solutions might be to avoid statistics request
somehow, or fully disassociate offloaded flows from the datapath flows.
Signed-off-by: Ilya Maximets <i.maximets@ovn.org> Acked-by: Ian Stokes <ian.stokes@intel.com>
Adds `mailto:` to email address links in mailing-lists.rst. The
existing syntax resulted in broken links of the form
`http://docs.openvswitch.org/en/latest/internals/mailing-lists/<address>`,
which would result in a 404 error.
Signed-off-by: Lars Kellogg-Stedman <lars@redhat.com> Signed-off-by: Ben Pfaff <blp@ovn.org>
Eelco Chaudron [Tue, 14 Jan 2020 16:12:47 +0000 (11:12 -0500)]
netdev-dpdk: Add new DPDK RFC 4115 egress policer
This patch adds a new policer to the DPDK datapath based on RFC 4115's
Two-Rate, Three-Color marker. It's a two-level hierarchical policer
which first does a color-blind marking of the traffic at the queue
level, followed by a color-aware marking at the port level. At the end
traffic marked as Green or Yellow is forwarded, Red is dropped. For
details on how traffic is marked, see RFC 4115.
This egress policer can be used to limit traffic at different rated
based on the queues the traffic is in. In addition, it can also be used
to prioritize certain traffic over others at a port level.
For example, the following configuration will limit the traffic rate at a
port level to a maximum of 2000 packets a second (64 bytes IPv4 packets).
100pps as CIR (Committed Information Rate) and 1000pps as EIR (Excess
Information Rate). High priority traffic is routed to queue 10, which marks
all traffic as CIR, i.e. Green. All low priority traffic, queue 20, is
marked as EIR, i.e. Yellow.
This configuration accomplishes that the high priority traffic has a
guaranteed bandwidth egressing the ports at CIR (1000pps), but it can also
use the EIR, so a total of 2000pps at max. These additional 1000pps is
shared with the low priority traffic. The low priority traffic can use at
maximum 1000pps.
Signed-off-by: Eelco Chaudron <echaudro@redhat.com> Signed-off-by: Ian Stokes <ian.stokes@intel.com>
Eelco Chaudron [Tue, 14 Jan 2020 16:12:40 +0000 (11:12 -0500)]
netdev-dpdk: Add support for multi-queue QoS to the DPDK datapath
This patch adds support for multi-queue QoS to the DPDK datapath. Most of
the code is based on an earlier patch from a patchset sent out by
zhaozhanxu. The patch was titled "[ovs-dev, v2, 1/4] netdev-dpdk.c: Support
the multi-queue QoS configuration for dpdk datapath"
Ilya Maximets [Tue, 14 Jan 2020 20:18:14 +0000 (21:18 +0100)]
netdev-offload-tc: Fix crash if offloading is not configured on outdev.
If output device is not yet added to netdev-offload, netdev_ports_get()
will not find it leading to NULL pointer dereference inside
netdev_get_ifindex().
Fixes: 8f283af89298 ("netdev-tc-offloads: Implement netdev flow put using tc interface") Signed-off-by: Ilya Maximets <i.maximets@ovn.org> Acked-by: Ben Pfaff <blp@ovn.org>
Ben Pfaff [Mon, 13 Jan 2020 18:03:04 +0000 (10:03 -0800)]
socket-util: Emulate recvmmsg() and sendmmsg() on Linux only.
These functions failed to build on OS X because MSG_WAITFORONE is not
defined there. There are pitfalls for trying to define our own MSG_*
constants, since it's hard to pick a constant that is not used by the
system already. Because OVS only uses recvmmsg() and sendmmsg() on
Linux, it seems easiest to just emulate them there.
Ilya Maximets [Thu, 9 Jan 2020 15:59:15 +0000 (16:59 +0100)]
odp-util: Fix passing uninitialized bytes in OVS_KEY_ATTR_CT_ORIG_TUPLE_IPV*.
Both ovs_key_ct_tuple_ipv* structures contains padding at the end
that mast be cleared before passing attributes to kernel:
Syscall param sendmsg(msg.msg_iov[0]) points to uninitialised byte(s)
at 0x566A607: sendmsg (sendmsg.c:28)
by 0xFC95CE: nl_sock_transact_multiple__ (netlink-socket.c:858)
by 0xFC8580: nl_sock_transact_multiple (netlink-socket.c:1079)
by 0xFC83FF: nl_transact_multiple (netlink-socket.c:1839)
by 0xFA8648: dpif_netlink_operate__ (dpif-netlink.c:1926)
by 0xFA789F: dpif_netlink_operate_chunks (dpif-netlink.c:2219)
by 0xFA25CB: dpif_netlink_operate (dpif-netlink.c:2278)
by 0xE5BB4C: dpif_operate (dpif.c:1377)
by 0xE5B7F6: dpif_flow_put (dpif.c:1048)
by 0xE5B49A: dpif_probe_feature (dpif.c:965)
by 0xDD6BF5: check_ct_orig_tuple (ofproto-dpif.c:1557)
by 0xDD41EC: check_support (ofproto-dpif.c:1590)
by 0xDD3BF3: open_dpif_backer (ofproto-dpif.c:818)
by 0xDC8467: construct (ofproto-dpif.c:1605)
by 0xDAD6BB: ofproto_create (ofproto.c:549)
by 0xD96A19: bridge_reconfigure (bridge.c:877)
by 0xD9625D: bridge_run (bridge.c:3324)
by 0xDA5829: main (ovs-vswitchd.c:127)
Address 0x1ffefe36a5 is on thread 1's stack
in frame #4, created by dpif_netlink_operate__ (dpif-netlink.c:1839)
Uninitialised value was created by a stack allocation
at 0xEB87D0: odp_flow_key_from_flow__ (odp-util.c:5996)
Fixes: daf4d3c18da4 ("odp: Support conntrack orig tuple key.") Signed-off-by: Ilya Maximets <i.maximets@ovn.org> Acked-by: Ben Pfaff <blp@ovn.org>
Timothy Redaelli [Mon, 13 Jan 2020 16:47:03 +0000 (17:47 +0100)]
ovs-tcpdump: Fallback to read /proc/net/dev on Linux
Currently, ovs-tcpdump uses python3-netifaces in order to get the list of
the network interfaces, but python3-netifaces may not be installed nor
available on some distributions (for example on RHEL7).
This commit adds, only for Linux, an alternative way (that is only used
when netifaces is not available) to read the list of the network interfaces
by reading "/proc/net/dev".
Signed-off-by: Timothy Redaelli <tredaelli@redhat.com> Signed-off-by: Ben Pfaff <blp@ovn.org>
In "Use of library functions" in the C standard, the following statement
is written to apply to all library functions:
If an argument to a function has an invalid value (such as ... a
null pointer ... the behavior is undefined.
Later, under the "String handling" section, "Comparison functions" no
exception is listed for strcmp, which means NULL is invalid. It may
be possible for the smap_get to return NULL.
Given the above, we must check that new_devargs is not null. The check
against NULL for new_devargs later in the function is still valid.
Fixes: 55e075e65ef9 ("netdev-dpdk: Arbitrary 'dpdk' port naming") Signed-off-by: Aaron Conole <aconole@redhat.com> Acked-by: Ciara Loftus <ciara.loftus@intel.com> Signed-off-by: Ian Stokes <ian.stokes@intel.com>
Yi Yang [Wed, 18 Dec 2019 02:35:27 +0000 (21:35 -0500)]
Use batch process recv for tap and raw socket in netdev datapath
Current netdev_linux_rxq_recv_tap and netdev_linux_rxq_recv_sock
just receive single packet, that is very inefficient, per my test
case which adds two tap ports or veth ports into OVS bridge
(datapath_type=netdev) and use iperf3 to do performance test
between two ports (they are set into different network name space).
The result is as below:
tap: 295 Mbits/sec
veth: 207 Mbits/sec
After I change netdev_linux_rxq_recv_tap and
netdev_linux_rxq_recv_sock to use batch process, the performance
is boosted by about 7 times, here is the result:
tap: 1.96 Gbits/sec
veth: 1.47 Gbits/sec
Undoubtedly this is a huge improvement although it can't match
OVS kernel datapath yet.
FYI: here is thr result for OVS kernel datapath:
tap: 37.2 Gbits/sec
veth: 36.3 Gbits/sec
Note: performance result is highly related with your test machine,
you shouldn't expect the same results on your test machine.
Signed-off-by: Yi Yang <yangyi01@inspur.com> Signed-off-by: Ben Pfaff <blp@ovn.org>
Ilya Maximets [Sun, 8 Dec 2019 17:51:09 +0000 (18:51 +0100)]
dpif-netdev: Get rid of broken dpif pointer in dp_netdev structure.
This pointer was introduced in July 2014 by commit 6b31e07347ad ("dpif-netdev: Polling threads directly call ofproto upcall functions.")
and it was broken right from this point because dpif_netdev_open()
updates it on each call with the pointer to a newly allocated
'dpif' structure that becomes invalid on the next dpif_netdev_close().
Since dpif_open/close() always happens asynchronously from different
threads and pointer is not protected by rcu or mutex (it's not even
atomic) it's not possible to safely use it. Thankfully the actual
usage was in repository for less than 3 weeks and was removed by
commit 623540e4617e ("dpif-netdev: Streamline miss handling."). Until
recently this pointer was used in order to pass it to dpif_flow_hash().
Another luck is that dpif_flow_hash() didn't use the 'dpif' argument.
However, we tried to use it while netdev offloading by commit 30115809da2e ("dpif-netdev: Use netdev-offload API for port lookup while offloading.")
and that unveiled the issue.
Now that all the code that used this pointer was cleaned up we can
just remove it from the structure to avoid possible misuse in the
future.
Signed-off-by: Ilya Maximets <i.maximets@ovn.org> Acked-by: Ben Pfaff <blp@ovn.org>
Ilya Maximets [Sun, 8 Dec 2019 17:09:53 +0000 (18:09 +0100)]
dpif: Turn dpif_flow_hash function into generic odp_flow_key_hash.
Current implementation of dpif_flow_hash() doesn't depend on datapath
interface and only complicates the callers by forcing them to figure
out what is their current 'dpif'. If we'll need different hashing
for different 'dpif's we'll implement an API for dpif-providers
and each dpif implementation will be able to use their local function
directly without calling it via dpif API.
This change will allow us to not store 'dpif' pointer in the userspace
datapath implementation which is broken and will be removed in next
commits.
This patch moves dpif_flow_hash() to odp-util module and replaces
unused odp_flow_key_hash() by it, along with removing of unused 'dpif'
argument.
Signed-off-by: Ilya Maximets <i.maximets@ovn.org> Acked-by: Ben Pfaff <blp@ovn.org>
Numan Siddique [Tue, 7 Jan 2020 04:54:48 +0000 (10:24 +0530)]
ovsdb replication: Provide option to configure probe interval.
When ovsdb-server is in backup mode and connects to the active
ovsdb-server for replication, and if takes more than 5 seconds to
get the dump of the whole database, it will drop the connection
soon after as the default probe interval is 5 seconds. This
results in a snowball effect of reconnections to the active
ovsdb-server.
This patch handles or mitigates this issue by setting the
default probe interval value to 60 seconds and provide the option to
configure this value from the unixctl command.
Other option could be increase the value of 'RECONNECT_DEFAULT_PROBE_INTERVAL'
to a higher value.
Acked-by: Mark Michelson <mmichels@redhat.com> Acked-by: Dumitru Ceara <dceara@redhat.com> Signed-off-by: Numan Siddique <numans@ovn.org> Signed-off-by: Ben Pfaff <blp@ovn.org>
Anju Thomas [Wed, 18 Dec 2019 04:48:12 +0000 (05:48 +0100)]
userspace: Improved packet drop statistics.
Currently OVS maintains explicit packet drop/error counters only on port
level. Packets that are dropped as part of normal OpenFlow processing
are counted in flow stats of “drop” flows or as table misses in table
stats. These can only be interpreted by controllers that know the
semantics of the configured OpenFlow pipeline. Without that knowledge,
it is impossible for an OVS user to obtain e.g. the total number of
packets dropped due to OpenFlow rules.
Furthermore, there are numerous other reasons for which packets can be
dropped by OVS slow path that are not related to the OpenFlow pipeline.
The generated datapath flow entries include a drop action to avoid
further expensive upcalls to the slow path, but subsequent packets
dropped by the datapath are not accounted anywhere.
Finally, the datapath itself drops packets in certain error situations.
Also, these drops are today not accounted for.This makes it difficult
for OVS users to monitor packet drop in an OVS instance and to alert a
management system in case of a unexpected increase of such drops.
Also OVS trouble-shooters face difficulties in analysing packet drops.
With this patch we implement following changes to address the issues
mentioned above.
1. Identify and account all the silent packet drop scenarios
2. Display these drops in ovs-appctl coverage/show
Ilya Maximets [Sat, 4 Jan 2020 00:07:36 +0000 (01:07 +0100)]
ofproto-dpif-upcall: Fix using uninitialized upcall hash.
upcalls are allocated on stack and 'hash' field must be initialized
regardless of attribute existence because it will be used later.
Conditional jump or move depends on uninitialised value(s)
at 0xFA74A7: dpif_netlink_encode_execute (dpif-netlink.c:1828)
by 0xFA6DE8: dpif_netlink_operate__ (dpif-netlink.c:1906)
by 0xFA612F: dpif_netlink_operate_chunks (dpif-netlink.c:2219)
by 0xFA0E36: dpif_netlink_operate (dpif-netlink.c:2275)
by 0xE5AFAC: dpif_operate (dpif.c:1376)
by 0xDF3922: handle_upcalls (ofproto-dpif-upcall.c:1615)
by 0xDF269B: recv_upcalls (ofproto-dpif-upcall.c:857)
by 0xDF1C49: udpif_upcall_handler (ofproto-dpif-upcall.c:759)
by 0xF3A3FE: ovsthread_wrapper (ovs-thread.c:383)
by 0x565F6DA: start_thread (pthread_create.c:463)
by 0x615988E: clone (clone.S:95)
Uninitialised value was created by a stack allocation
at 0xDF2258: recv_upcalls (ofproto-dpif-upcall.c:773)
Fixes: 0442bfb11d6c ("ofproto-dpif-upcall: Echo HASH attribute back to datapath.") Signed-off-by: Ilya Maximets <i.maximets@ovn.org> Acked-by: Tonghao Zhang <xiangxia.m.yue@gmail.com> Acked-by: William Tu <u9012063@gmail.com>
Ilya Maximets [Fri, 3 Jan 2020 23:32:04 +0000 (00:32 +0100)]
ofproto-dpif: Fix using uninitialized execute hash.
Most of callers doesn't initialize dpif_execute.hash leaving random
value from the stack. And this random value used later while encoding
netlink message and might produce unwanted kernel behavior.
Fix that by fully initializing dpif_execute structure. Using
designated initializers to avoid such issues in the future.
Fixes: 0442bfb11d6c ("ofproto-dpif-upcall: Echo HASH attribute back to datapath.") Signed-off-by: Ilya Maximets <i.maximets@ovn.org> Acked-by: William Tu <u9012063@gmail.com> Acked-by: Ben Pfaff <blp@ovn.org>
dpif logging functions expects to be called after the operation.
log_flow_del_message() dumps flow stats on success which are not
initialized before the actual call to netdev_flow_del():
Conditional jump or move depends on uninitialised value(s)
at 0x6090875: _itoa_word (_itoa.c:179)
by 0x6093F0D: vfprintf (vfprintf.c:1642)
by 0x60C090F: vsnprintf (vsnprintf.c:114)
by 0xE5E7EC: ds_put_format_valist (dynamic-string.c:155)
by 0xE5E755: ds_put_format (dynamic-string.c:142)
by 0xE5A5E6: dpif_flow_stats_format (dpif.c:903)
by 0xE5B708: log_flow_message (dpif.c:1763)
by 0xE5BCA4: log_flow_del_message (dpif.c:1809)
by 0xFA6076: try_send_to_netdev (dpif-netlink.c:2190)
by 0xFA0D3C: dpif_netlink_operate (dpif-netlink.c:2248)
by 0xE5AFAC: dpif_operate (dpif.c:1376)
by 0xDF176E: push_dp_ops (ofproto-dpif-upcall.c:2367)
by 0xDF04C8: push_ukey_ops (ofproto-dpif-upcall.c:2447)
by 0xDF008F: revalidator_sweep__ (ofproto-dpif-upcall.c:2805)
by 0xDF5DC6: revalidator_sweep (ofproto-dpif-upcall.c:2816)
by 0xDF1E83: udpif_revalidator (ofproto-dpif-upcall.c:949)
by 0xF3A3FE: ovsthread_wrapper (ovs-thread.c:383)
by 0x565F6DA: start_thread (pthread_create.c:463)
by 0x615988E: clone (clone.S:95)
Uninitialised value was created by a stack allocation
at 0xDEFC24: revalidator_sweep__ (ofproto-dpif-upcall.c:2733)
Fixes: 3cd99886191e ("dpif-netlink: Use dpif logging functions") Signed-off-by: Ilya Maximets <i.maximets@ovn.org> Acked-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Simon Horman <simon.horman@netronome.com>
Ilya Maximets [Fri, 3 Jan 2020 18:48:18 +0000 (19:48 +0100)]
tc: Fix using uninitialized id chain.
tc_make_tcf_id() doesn't initialize the 'chain' field leaving it with a
random value from the stack. This makes request_from_tcf_id() create
request with random TCA_CHAIN included. These requests are obviously
doesn't work as needed leading to broken flow dump and various other
issues. Fix that by using designated initializer instead.
Fixes: acdd544c4c9a ("tc: Introduce tcf_id to specify a tc filter") Signed-off-by: Ilya Maximets <i.maximets@ovn.org> Acked-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Simon Horman <simon.horman@netronome.com>
Greg Rose [Mon, 6 Jan 2020 21:36:34 +0000 (13:36 -0800)]
compat: Include confirm_neigh parameter if needed
A change backported to the Linux 4.14.162 LTS kernel requires
a boolean parameter. Check for the presence of the parameter
and adjust the caller in that case.
bridge: Split the column updates of rstp statistics and status.
Split the update of rstp_statistics column and rstp_status column in
Port table into two different functions. This helps in controlling the
number of times the rstp_statistics column is updated with the key
"stats-update_interval" in Open_vSwitch table.
Signed-off-by: Krishna Kolakaluri <kkolakaluri@plume.com> Signed-off-by: Ben Pfaff <blp@ovn.org>
projects / ovs.git / log