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-rw-r--r--doc/primary-expression.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/primary-expression.txt b/doc/primary-expression.txt
index 6f636e13..94eccc20 100644
--- a/doc/primary-expression.txt
+++ b/doc/primary-expression.txt
@@ -76,6 +76,12 @@ ifname
|oiftype|
Output interface hardware type|
iface_type
+|sdif|
+Slave device input interface index |
+iface_index
+|sdifname|
+Slave device interface name|
+ifname
|skuid|
UID associated with originating socket|
uid