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conntrack: Add option to disable TCP sequence checking.

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This may be needed in some special cases, such as to support some hardware
offload implementations.  Note that disabling TCP sequence number
verification is not an optimization in itself, but supporting some
hardware offload implementations may offer better performance.  TCP
sequence number verification is enabled by default.  This option is only
available for the userspace datapath.  Access to this option is presently
provided via 'dpctl' commands as the need for this option is quite node
specific, by virtue of which nics are in use on a given node.  A test is
added to verify this option.

Reported-at: https://mail.openvswitch.org/pipermail/ovs-dev/2019-May/359188.html
Signed-off-by: Darrell Ball <dlu998@gmail.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
This commit is contained in:
Darrell Ball
2019-09-25 14:09:41 -07:00
committed by Ben Pfaff
parent be2ddc6518
commit 64207120c8
13 changed files with 305 additions and 5 deletions
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2
lib/dpif-netlink.c
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@@ -3426,6 +3426,8 @@ const struct dpif_class dpif_netlink_class = {
NULL, /* ct_set_maxconns */
NULL, /* ct_get_maxconns */
NULL, /* ct_get_nconns */
NULL, /* ct_set_tcp_seq_chk */
NULL, /* ct_get_tcp_seq_chk */
dpif_netlink_ct_set_limits,
dpif_netlink_ct_get_limits,
dpif_netlink_ct_del_limits,