When transport node has multiple interfaces (vlans) and
ovn-encap-ip on different hosts need to be configured
from different VLANs source IP for encapsulated packet
can be not the same, which is expected by remote system.
Explicitely setting local_ip resolves such problem.
Signed-off-by: Vladislav Odintsov <odiv...@gmail.com>
---
controller/encaps.c | 37 +++++++++++++++++++++------------
controller/ovn-controller.8.xml | 7 +++++++
2 files changed, 31 insertions(+), 13 deletions(-)
diff --git a/controller/encaps.c b/controller/encaps.c
index 66e0cd8cd..3b0c92931 100644
--- a/controller/encaps.c
+++ b/controller/encaps.c
@@ -23,6 +23,7 @@
#include "openvswitch/vlog.h"
#include "lib/ovn-sb-idl.h"
#include "ovn-controller.h"
+#include "smap.h"
VLOG_DEFINE_THIS_MODULE(encaps);
@@ -176,8 +177,31 @@ tunnel_add(struct tunnel_ctx *tc, const struct
sbrec_sb_global *sbg,
smap_add(&options, "dst_port", dst_port);
}
+ const struct ovsrec_open_vswitch *cfg =
+ ovsrec_open_vswitch_table_first(ovs_table);
+
+ bool set_local_ip = false;
+ if (cfg) {
+ /* If the tos option is configured, get it */
+ const char *encap_tos = smap_get_def(&cfg->external_ids,
+ "ovn-encap-tos", "none");
+
+ if (encap_tos && strcmp(encap_tos, "none")) {
+ smap_add(&options, "tos", encap_tos);
+ }
+
+ /* If ovn-set-local-ip option is configured, get it */
+ set_local_ip = smap_get_bool(&cfg->external_ids, "ovn-set-local-ip",
+ false);
+ }
+
/* Add auth info if ipsec is enabled. */
if (sbg->ipsec) {
+ set_local_ip = true;
+ smap_add(&options, "remote_name", new_chassis_id);
+ }
+
+ if (set_local_ip) {
const struct sbrec_chassis *this_chassis = tc->this_chassis;
const char *local_ip = NULL;
@@ -200,19 +224,6 @@ tunnel_add(struct tunnel_ctx *tc, const struct
sbrec_sb_global *sbg,
if (local_ip) {
smap_add(&options, "local_ip", local_ip);
}
- smap_add(&options, "remote_name", new_chassis_id);
- }
-
- const struct ovsrec_open_vswitch *cfg =
- ovsrec_open_vswitch_table_first(ovs_table);
- /* If the tos option is configured, get it */
- if (cfg) {
- const char *encap_tos = smap_get_def(&cfg->external_ids,
- "ovn-encap-tos", "none");
-
- if (encap_tos && strcmp(encap_tos, "none")) {
- smap_add(&options, "tos", encap_tos);
- }
}
/* If there's an existing chassis record that does not need any change,
diff --git a/controller/ovn-controller.8.xml b/controller/ovn-controller.8.xml
index e9708fe64..cc9a7d1c2 100644
--- a/controller/ovn-controller.8.xml
+++ b/controller/ovn-controller.8.xml
@@ -304,6 +304,13 @@
of how many entries there are in the cache. By default this is set to
30000 (30 seconds).
</dd>
+ <dt><code>external_ids:ovn-set-local-ip</code></dt>
+ <dd>
+ The boolean flag indicates if <code>ovn-controller</code> when create
+ tunnel ports should set <code>local_ip</code> parameter. Can be
+ heplful to pin source outer IP for the tunnel when multiple interfaces
+ are used on the host for overlay traffic.
+ </dd>
</dl>
<p>
--
2.30.0
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