#include <vnet/ip/ip4_packet.h>
#include <vnet/pg/pg.h>
#include <vnet/ip/format.h>
-#include <vnet/ip/udp.h>
+#include <vnet/udp/udp.h>
typedef enum {
#define dhcp_proxy_error(n,s) DHCP_PROXY_ERROR_##n,
*/
typedef struct dhcp_vss_t_ {
/**
- * @brief ?? RFC doesn't say
+ * @brief VSS type as defined in RFC 6607:
+ * 0 for NVT ASCII VPN Identifier
+ * 1 for RFC 2685 VPN-ID of 7 octects - 3 bytes OUI & 4 bytes VPN index
+ * 255 for global default VPN
*/
- u32 oui;
+ u8 vss_type;
+#define VSS_TYPE_ASCII 0
+#define VSS_TYPE_VPN_ID 1
+#define VSS_TYPE_INVALID 123
+#define VSS_TYPE_DEFAULT 255
/**
- * @brief VPN-ID
+ * @brief Type 1 VPN-ID
*/
- u32 fib_id;
+ u8 vpn_id[7];
+ /**
+ * @brief Type 0 ASCII VPN Identifier
+ */
+ u8 *vpn_ascii_id;
} 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
*/
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)
*/
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];
/* hash lookup specific vrf_id -> option 82 vss suboption */
u32 *vss_index_by_rx_fib_index[DHCP_N_PROTOS];
-
} dhcp_proxy_main_t;
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
/**
* @brief Configure/set a new VSS info
*/
-int dhcp_proxy_set_vss(fib_protocol_t proto,
- u32 vrf_id,
- u32 oui,
- u32 fib_id,
- int is_del);
+int dhcp_proxy_set_vss (fib_protocol_t proto,
+ u32 tbl_id,
+ u8 vss_type,
+ u8 *vpn_ascii_id,
+ u32 oui,
+ u32 vpn_index,
+ u8 is_del);
/**
* @brief Dump the proxy configs to the API
/**
* @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);
/**
dhcp_vss_walk_fn_t fn,
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
*/
/**
* @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)
Code Review / vpp.git / blobdiff