X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=secnet.git;a=blobdiff_plain;f=secnet.h;h=6ac64e30a7b517986faeb25fda9d32bca78b196c;hp=06beb05df27fd9c2bb8221052a7d90f48176ec22;hb=46008a7c3e56df88d06087d26cb9ddc197933589;hpb=7b1a9fb74228564b5ee07b48c042ee7b9a2260f1

diff --git a/secnet.h b/secnet.h
index 06beb05..6ac64e3 100644
--- a/secnet.h
+++ b/secnet.h
@@ -387,15 +387,21 @@ struct site_if {
 
 typedef struct transform_inst_if *transform_createinstance_fn(void *st);
 typedef bool_t transform_setkey_fn(void *st, uint8_t *key, int32_t keylen);
+typedef bool_t transform_valid_fn(void *st); /* 0: no key; 1: ok */
 typedef void transform_delkey_fn(void *st);
 typedef void transform_destroyinstance_fn(void *st);
-/* Returns 0 for 'all is well', any other value for a problem */
+/* Returns:
+ *   0: all is well
+ *   1: for any other problem
+ *   2: message decrypted but sequence number was out of range
+ */
 typedef uint32_t transform_apply_fn(void *st, struct buffer_if *buf,
 				    const char **errmsg);
 
 struct transform_inst_if {
     void *st;
     transform_setkey_fn *setkey;
+    transform_valid_fn *valid;
     transform_delkey_fn *delkey;
     transform_apply_fn *forwards;
     transform_apply_fn *reverse;
@@ -420,10 +426,11 @@ struct transform_if {
 typedef void netlink_deliver_fn(void *st, struct buffer_if *buf);
 /* site code can tell netlink when outgoing packets will be dropped,
    so netlink can generate appropriate ICMP and make routing decisions */
-#define LINK_QUALITY_DOWN 0   /* No chance of a packet being delivered */
-#define LINK_QUALITY_DOWN_STALE_ADDRESS 1 /* Link down, old address information */
-#define LINK_QUALITY_DOWN_CURRENT_ADDRESS 2 /* Link down, current address information */
-#define LINK_QUALITY_UP 3     /* Link active */
+#define LINK_QUALITY_UNUSED 0   /* This link is unused, do not make this netlink */
+#define LINK_QUALITY_DOWN 1   /* No chance of a packet being delivered right away*/
+#define LINK_QUALITY_DOWN_STALE_ADDRESS 2 /* Link down, old address information */
+#define LINK_QUALITY_DOWN_CURRENT_ADDRESS 3 /* Link down, current address information */
+#define LINK_QUALITY_UP 4     /* Link active */
 #define MAXIMUM_LINK_QUALITY 3
 typedef void netlink_link_quality_fn(void *st, uint32_t quality);
 typedef void netlink_register_fn(void *st, netlink_deliver_fn *deliver,
@@ -437,8 +444,6 @@ struct netlink_if {
     netlink_register_fn *reg;
     netlink_deliver_fn *deliver;
     netlink_link_quality_fn *set_quality;
-    netlink_output_config_fn *output_config;
-    netlink_check_config_fn *check_config;
     netlink_set_mtu_fn *set_mtu;
 };