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authorNathan Skrzypczak <nathan.skrzypczak@gmail.com>2020-09-21 19:14:08 +0200
committerDave Barach <openvpp@barachs.net>2020-09-25 19:55:39 +0000
commitaf897c5e3fa76180fbe0634052bde98b4b3c34d7 (patch)
tree8078e55c02f69ac6b21eaf62fe4f653f71320871 /src/plugins/cnat/cnat_translation.h
parentce25b60de5536e2f79bb72e929e70ccc1a75e0f8 (diff)
cnat: Add DHCP support
Type: feature Change-Id: I4bd50fd672ac35cf14ebda2b0b10ec0b9a208628 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
Diffstat (limited to 'src/plugins/cnat/cnat_translation.h')
-rw-r--r--src/plugins/cnat/cnat_translation.h83
1 files changed, 59 insertions, 24 deletions
diff --git a/src/plugins/cnat/cnat_translation.h b/src/plugins/cnat/cnat_translation.h
index 748487a908a..cfcbf5bc13b 100644
--- a/src/plugins/cnat/cnat_translation.h
+++ b/src/plugins/cnat/cnat_translation.h
@@ -49,6 +49,11 @@ typedef struct cnat_ep_trk_t_
* The forwarding contributed by the entry
*/
dpo_id_t ct_dpo;
+
+ /**
+ * Allows to disable if not resolved yet
+ */
+ u8 is_active;
} cnat_ep_trk_t;
typedef enum cnat_translation_flag_t_
@@ -56,6 +61,43 @@ typedef enum cnat_translation_flag_t_
CNAT_TRANSLATION_FLAG_ALLOCATE_PORT = (1 << 0),
} cnat_translation_flag_t;
+typedef enum
+{
+ CNAT_RESOLV_ADDR_ANY,
+ CNAT_RESOLV_ADDR_BACKEND,
+ CNAT_RESOLV_ADDR_SNAT,
+ CNAT_RESOLV_ADDR_TRANSLATION,
+ CNAT_ADDR_N_RESOLUTIONS,
+} cnat_addr_resol_type_t;
+
+/**
+ * Entry used to account for a translation's backend
+ * waiting for address resolution
+ */
+typedef struct addr_resolution_t_
+{
+ /**
+ * The interface index to resolve
+ */
+ u32 sw_if_index;
+ /**
+ * ip4 or ip6 resolution
+ */
+ ip_address_family_t af;
+ /**
+ * The cnat_addr_resolution_t
+ */
+ cnat_addr_resol_type_t type;
+ /**
+ * Translation index
+ */
+ index_t cti;
+ /**
+ * Callback data
+ */
+ u64 opaque;
+} addr_resolution_t;
+
/**
* A Translation represents the translation of a VEP to one of a set
* of real server addresses
@@ -89,6 +131,7 @@ typedef struct cnat_translation_t_
/**
* The client object this translation belongs on
+ * INDEX_INVALID if vip is unresolved
*/
index_t ct_cci;
@@ -116,33 +159,12 @@ extern u8 *format_cnat_translation (u8 * s, va_list * args);
*
* @return the ID of the translation. used to delete and gather stats
*/
-extern u32 cnat_translation_update (const cnat_endpoint_t * vip,
+extern u32 cnat_translation_update (cnat_endpoint_t * vip,
ip_protocol_t ip_proto,
- const cnat_endpoint_tuple_t *
+ cnat_endpoint_tuple_t *
backends, u8 flags);
/**
- * Add a translation to the bihash
- *
- * @param cci the ID of the parent client
- * @param port the translation port
- * @param proto the translation proto
- * @param cti the translation index to be used as value
- */
-extern void cnat_add_translation_to_db (index_t cci, u16 port,
- ip_protocol_t proto, index_t cti);
-
-/**
- * Remove a translation from the bihash
- *
- * @param cci the ID of the parent client
- * @param port the translation port
- * @param proto the translation proto
- */
-extern void cnat_remove_translation_from_db (index_t cci, u16 port,
- ip_protocol_t proto);
-
-/**
* Delete a translation
*
* @param id the ID as returned from the create
@@ -164,6 +186,19 @@ extern void cnat_translation_walk (cnat_translation_walk_cb_t cb, void *ctx);
*/
extern int cnat_translation_purge (void);
+/**
+ * Add an address resolution request
+ */
+extern void cnat_translation_watch_addr (index_t cti, u64 opaque,
+ cnat_endpoint_t * ep,
+ cnat_addr_resol_type_t type);
+
+/**
+ * Cleanup matching addr resolution requests
+ */
+extern void cnat_translation_unwatch_addr (u32 cti,
+ cnat_addr_resol_type_t type);
+
/*
* Data plane functions
*/
@@ -182,7 +217,7 @@ cnat_find_translation (index_t cti, u16 port, ip_protocol_t proto)
u64 key;
int rv;
- key = (proto << 16) | port;
+ key = (proto << 24) | port;
key = key << 32 | (u32) cti;
bkey.key = key;