This patch changes BGP from only listening mode for BFD status updates to interactive mode of dynamically registering/deregistering BFD enabled peers with PTM/BFD through zebra. Peer is registered with BFD when it goes into established state and de-registers when it goes out of establish state.

This patch also adds BFD multihop support for BGP. Whether a peer is multi-hop or single hop is determined internally. All IGP peers are considered as multi-hop peers. EBGP peers are considered as single hop unless configured as multi-hop.

BGP BFD command enhancement to configure BFD parameters (detect multiplier, min rx and min tx).

router bgp <as-number>
  neighbor <name/ip-address> bfd <detect mult> <min rx> <min tx>

Signed-off-by: Radhika Mahankali <radhika@cumulusnetworks.com>
Reviewed-by:   Dinesh G Dutt <ddutt@cumulusnetworks.com>
Reviewed-by:   Vipin Kumar <vipin@cumulusnetworks.com>
Reviewed-by:   Kanna Rajagopal <kanna@cumulusnetworks.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/lib/ptm_lib.h b/lib/ptm_lib.h
new file mode 100644
index 000000000..1aa2f356f
--- /dev/null
+++ b/lib/ptm_lib.h
@@ -0,0 +1,49 @@
+/*********************************************************************
+ * Copyright 2015 Cumulus Networks, LLC.  All rights reserved.
+ *
+ * library file used by clients for sending commands and parsing response
+ *
+ */
+
+#define PTMLIB_MSG_SZ           1024
+#define PTMLIB_MSG_HDR_LEN      37
+#define PTMLIB_MSG_VERSION      2
+#define PTMLIB_MAXNAMELEN       32
+
+#define    PTMLIB_CMD_GET_STATUS        "get-status"
+#define    PTMLIB_CMD_GET_BFD_CLIENT    "get-bfd-client"
+#define    PTMLIB_CMD_START_BFD_SESS    "start-bfd-sess"
+#define    PTMLIB_CMD_STOP_BFD_SESS     "stop-bfd-sess"
+
+typedef enum {
+    PTMLIB_MSG_TYPE_NOTIFICATION = 1,
+    PTMLIB_MSG_TYPE_CMD,
+    PTMLIB_MSG_TYPE_RESPONSE,
+} ptmlib_msg_type;
+
+typedef enum {
+    MODULE_BFD = 0,
+    MODULE_LLDP,
+    MODULE_MAX,
+} ptmlib_mod_type;
+
+typedef int (*ptm_cmd_cb) (void *data, void *arg);
+typedef int (*ptm_notify_cb) (void *data, void *arg);
+typedef int (*ptm_response_cb) (void *data, void *arg);
+typedef int (*ptm_log_cb) (void *data, void *arg,...);
+
+typedef struct ptm_lib_handle_s {
+    char            client_name[PTMLIB_MAXNAMELEN];
+    ptm_cmd_cb      cmd_cb;
+    ptm_notify_cb   notify_cb;
+    ptm_response_cb response_cb;
+} ptm_lib_handle_t;
+
+/* Prototypes */
+int ptm_lib_process_msg(ptm_lib_handle_t *, int, char *, int, void *);
+ptm_lib_handle_t *ptm_lib_register(char *, ptm_cmd_cb, ptm_notify_cb, ptm_response_cb);
+void ptm_lib_deregister(ptm_lib_handle_t *);
+int ptm_lib_find_key_in_msg(void *, const char *, char *);
+int ptm_lib_init_msg(ptm_lib_handle_t *, int, int, void *, void **);
+int ptm_lib_append_msg(ptm_lib_handle_t *, void *, const char *, char *);
+int ptm_lib_complete_msg(ptm_lib_handle_t *, void *, char *, int *);