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How did these survive so long?! OVS hasn't had facets since 2013.
Signed-off-by: Ben Pfaff <blp@ovn.org>
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Currently, the mirror code doesn't check new value of snaplen when try
to reconfigure snaplen.
This patch fix this issue and add testings to reconfigure snaplen.
Signed-off-by: Zhenyu Gao <sysugaozhenyu@gmail.com>
Acked-by: William Tu <u9012063@gmail.com>
Signed-off-by: Andy Zhou <azhou@ovn.org>
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Handler threads use a selection of mirror functions with the
assumption that the data referred to is RCU protected, while the
implementation has not provided for this, which can lead to an OVS
crash.
This patch fixes this by making the mbundle lookup RCU-safe by using
cmap instead of hmap and postponing mbundle memory free, as wells as
postponing the frees of the mirrors and the vlan bitmaps of each
mirror.
Note that mirror stats update is still not accurate if multiple
threads do it simultaneously.
A less complete version of this patch (using cmap and RCU postpone
just for the mbridge itself) was tested by Yunjian Wang and was found
to fix the observed crash when running a script that adds and deletes
a port repeatedly.
Reported-by: Yunjian Wang <wangyunjian@huawei.com>
Signed-off-by: Jarno Rajahalme <jarno@ovn.org>
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To easily allow both in- and out-of-tree building of the Python
wrapper for the OVS JSON parser (e.g. w/ pip), move json.h to
include/openvswitch. This also requires moving lib/{hmap,shash}.h.
Both hmap.h and shash.h were #include-ing "util.h" even though the
headers themselves did not use anything from there, but rather from
include/openvswitch/util.h. Fixing that required including util.h
in several C files mostly due to OVS_NOT_REACHED and things like
xmalloc.
Signed-off-by: Terry Wilson <twilson@redhat.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
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This patch adds a 'snaplen' config for mirroring table. A mirrored packet
with size larger than snaplen bytes will be truncated in datapath before
sending to the mirror output port.
Tested-at: https://travis-ci.org/williamtu/ovs-travis/builds/141186839
Signed-off-by: William Tu <u9012063@gmail.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
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Flag "need_revalidate" on mbridge is set to true when an ofbundle
destroy. And it's never reset. It causes the backer revalidate and
the mac learning flush every time 'ofproto_run' is called.
Signed-off-by: Huanle Han <hanxueluo@gmail.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
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When a mirror was restricted to particular VLANs, this code was allocating,
copying, and freeing a 512-byte block of memory just to check the value of
a single bit in the block. This fixes the problem.
Found by inspection.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Andy Zhou <azhou@nicira.com>
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A new function vlog_insert_module() is introduced to avoid using
list_insert() from the vlog.h header.
Signed-off-by: Thomas Graf <tgraf@noironetworks.com>
Acked-by: Ben Pfaff <blp@nicira.com>
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Signed-off-by: Joe Stringer <joestringer@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
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There's no need for it because we have the equivalent (actually more
convenient) function raw_ctz(), which works with any integer type.
Signed-off-by: Ben Pfaff <blp@nicira.com>
CC: Alin Serdean <aserdean@cloudbasesolutions.com>
CC: Gurucharan Shetty <shettyg@nicira.com>
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Found by valgrind.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
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This code modularizes ofproto-dpif's mirror code by moving it to
ofproto-dpif-mirror. Not only does this shorten ofproto-dpif and
hide complexity, but its also necessary for future patches which
modularize ofproto-dpif-xlate in preparation for multi-threading.
Signed-off-by: Ethan Jackson <ethan@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
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