summaryrefslogtreecommitdiffstats
path: root/src/vnet/dhcp/dhcp_proxy.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/vnet/dhcp/dhcp_proxy.h')
-rw-r--r--src/vnet/dhcp/dhcp_proxy.h85
1 files changed, 62 insertions, 23 deletions
diff --git a/src/vnet/dhcp/dhcp_proxy.h b/src/vnet/dhcp/dhcp_proxy.h
index 708e92f3c32..ef2bc0a1926 100644
--- a/src/vnet/dhcp/dhcp_proxy.h
+++ b/src/vnet/dhcp/dhcp_proxy.h
@@ -58,9 +58,10 @@ typedef struct dhcp_vss_t_ {
} dhcp_vss_t;
/**
- * @brief A DHCP proxy server represenation
+ * @brief A representation of a single DHCP Server within a given VRF config
*/
-typedef struct dhcp_server_t_ {
+typedef struct dhcp_server_t_
+{
/**
* @brief The address of the DHCP server to which to relay the client's
* messages
@@ -68,22 +69,47 @@ typedef struct dhcp_server_t_ {
ip46_address_t dhcp_server;
/**
- * @brief The source address to use in relayed messaes
- */
- ip46_address_t dhcp_src_address;
-
- /**
* @brief The FIB index (not the external Table-ID) in which the server
* is reachable.
*/
u32 server_fib_index;
+} dhcp_server_t;
+
+/**
+ * @brief A DHCP proxy represenation fpr per-client VRF config
+ */
+typedef struct dhcp_proxy_t_ {
+ /**
+ * @brief The set of DHCP servers to which messages are relayed.
+ * If multiple servers are configured then discover/solict messages
+ * are relayed to each. A cookie is maintained for the relay, and only
+ * one message is replayed to the client, based on the presence of the
+ * cookie.
+ * The expectation is there are only 1 or 2 servers, hence no fancy DB.
+ */
+ dhcp_server_t *dhcp_servers;
+
+ /**
+ * @brief Hash table of pending requets key'd on the clients MAC address
+ */
+ uword *dhcp_pending;
+
+ /**
+ * @brief A lock for the pending request DB.
+ */
+ int lock;
+
+ /**
+ * @brief The source address to use in relayed messaes
+ */
+ ip46_address_t dhcp_src_address;
/**
* @brief The FIB index (not the external Table-ID) in which the client
* is resides.
*/
u32 rx_fib_index;
-} dhcp_server_t;
+} dhcp_proxy_t;
#define DHCP_N_PROTOS (FIB_PROTOCOL_IP6 + 1)
@@ -92,7 +118,7 @@ typedef struct dhcp_server_t_ {
*/
typedef struct {
/* Pool of DHCP servers */
- dhcp_server_t *dhcp_servers[DHCP_N_PROTOS];
+ dhcp_proxy_t *dhcp_servers[DHCP_N_PROTOS];
/* Pool of selected DHCP server. Zero is the default server */
u32 * dhcp_server_index_by_rx_fib_index[DHCP_N_PROTOS];
@@ -114,12 +140,7 @@ extern dhcp_proxy_main_t dhcp_proxy_main;
void dhcp_send_details (fib_protocol_t proto,
void *opaque,
u32 context,
- const ip46_address_t *server,
- const ip46_address_t *src,
- u32 server_fib_id,
- u32 rx_fib_id,
- u32 vss_fib_id,
- u32 vss_oui);
+ dhcp_proxy_t *proxy);
/**
* @brief Show (on CLI) a VSS config during a show walk
@@ -157,16 +178,22 @@ int dhcp_proxy_server_add(fib_protocol_t proto,
/**
* @brief Delete a DHCP proxy config
- * @return 0 is deleted, otherwise an error code
+ * @return 1 if the proxy is deleted, 0 otherwise
*/
int dhcp_proxy_server_del(fib_protocol_t proto,
- u32 rx_fib_index);
+ u32 rx_fib_index,
+ ip46_address_t *addr,
+ u32 server_table_id);
+
+u32
+dhcp_proxy_rx_table_get_table_id (fib_protocol_t proto,
+ u32 fib_index);
/**
* @brief Callback function invoked for each DHCP proxy entry
* return 0 to break the walk, non-zero otherwise.
*/
-typedef int (*dhcp_proxy_walk_fn_t)(dhcp_server_t *server,
+typedef int (*dhcp_proxy_walk_fn_t)(dhcp_proxy_t *server,
void *ctx);
/**
@@ -192,6 +219,18 @@ void dhcp_vss_walk(fib_protocol_t proto,
void *ctx);
/**
+ * @brief Lock a proxy object to prevent simultaneous access of its
+ * pending store
+ */
+void dhcp_proxy_lock (dhcp_proxy_t *server);
+
+/**
+ * @brief Lock a proxy object to prevent simultaneous access of its
+ * pending store
+ */
+void dhcp_proxy_unlock (dhcp_proxy_t *server);
+
+/**
* @brief Get the VSS data for the FIB index
*/
static inline dhcp_vss_t *
@@ -215,12 +254,12 @@ dhcp_get_vss_info (dhcp_proxy_main_t *dm,
/**
* @brief Get the DHCP proxy server data for the FIB index
*/
-static inline dhcp_server_t *
-dhcp_get_server (dhcp_proxy_main_t *dm,
- u32 rx_fib_index,
- fib_protocol_t proto)
+static inline dhcp_proxy_t *
+dhcp_get_proxy (dhcp_proxy_main_t *dm,
+ u32 rx_fib_index,
+ fib_protocol_t proto)
{
- dhcp_server_t *s = NULL;
+ dhcp_proxy_t *s = NULL;
if (vec_len(dm->dhcp_server_index_by_rx_fib_index[proto]) > rx_fib_index &&
dm->dhcp_server_index_by_rx_fib_index[proto][rx_fib_index] != ~0)