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authorNathan Skrzypczak <nathan.skrzypczak@gmail.com>2022-02-02 19:31:43 +0100
committerBeno�t Ganne <bganne@cisco.com>2022-03-18 11:33:51 +0000
commit762cfd408b16b6ab43ade3ab491292b93bdeb9b3 (patch)
tree3b303cb9db68a8003aca57820174b03902f3c714 /src/plugins/cnat/cnat_session.h
parent6798e9ec34a49df008ecb7f84559e531f6c0d651 (diff)
cnat: Fix conflicting rsession
When dNAT-ing to a VIP, it can happen that the return session conflicts with another forward session than the one we own. This patchs adds a rsession_flags CNAT_SESSION_RETRY_SNAT that makes cnat_session_create search for a free src port to use for the resulting return session. It also makes forward & return session share their fate in the session scanner. Type: fix Change-Id: Id0edf59abf8e5bc0c0d8941ba289c4563c77dee0 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
Diffstat (limited to 'src/plugins/cnat/cnat_session.h')
-rw-r--r--src/plugins/cnat/cnat_session.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/plugins/cnat/cnat_session.h b/src/plugins/cnat/cnat_session.h
index 072bb10f96f..a0a28c9a818 100644
--- a/src/plugins/cnat/cnat_session.h
+++ b/src/plugins/cnat/cnat_session.h
@@ -129,6 +129,11 @@ typedef enum cnat_session_flag_t_
/* Debug flag marking return sessions */
CNAT_SESSION_IS_RETURN = (1 << 4),
+
+ /** On conflicts when adding the return session, try to sNAT the
+ * forward session, and dNAT the return session with a random port */
+ CNAT_SESSION_RETRY_SNAT = (1 << 5),
+
} cnat_session_flag_t;
typedef enum cnat_session_location_t_