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authorNeale Ranns <neale@graphiant.com>2022-02-09 13:47:29 +0000
committerNeale Ranns <neale@graphiant.com>2022-02-09 13:47:29 +0000
commit63f2c7d70136761e24b19cca1f09d9cbdde66b69 (patch)
tree19be481e9f572b5ad607322644beb22cecfdf586 /src/vnet
parent023521fcb6713e1151a04e4358bb58695dd6e479 (diff)
bfd: Add an update API that has create new or modify existing semantics
Type: improvement helps keep the agents stateless Signed-off-by: Neale Ranns <neale@graphiant.com> Change-Id: I3588f13c081e24f5a8083b490eb02856361e4ccb
Diffstat (limited to 'src/vnet')
-rw-r--r--src/vnet/bfd/bfd.api20
-rw-r--r--src/vnet/bfd/bfd_api.c21
-rw-r--r--src/vnet/bfd/bfd_api.h9
-rw-r--r--src/vnet/bfd/bfd_udp.c92
4 files changed, 120 insertions, 22 deletions
diff --git a/src/vnet/bfd/bfd.api b/src/vnet/bfd/bfd.api
index f53cc7630fd..3957a94f6a6 100644
--- a/src/vnet/bfd/bfd.api
+++ b/src/vnet/bfd/bfd.api
@@ -107,6 +107,26 @@ autoreply define bfd_udp_add
u8 bfd_key_id;
u32 conf_key_id;
};
+define bfd_udp_upd
+{
+ u32 client_index;
+ u32 context;
+ vl_api_interface_index_t sw_if_index;
+ u32 desired_min_tx;
+ u32 required_min_rx;
+ vl_api_address_t local_addr;
+ vl_api_address_t peer_addr;
+ u8 detect_mult;
+ bool is_authenticated;
+ u8 bfd_key_id;
+ u32 conf_key_id;
+};
+define bfd_udp_upd_reply
+{
+ u32 context;
+ i32 retval;
+ u32 stats_index;
+};
/** \brief Modify UDP BFD session on interface
@param client_index - opaque cookie to identify the sender
diff --git a/src/vnet/bfd/bfd_api.c b/src/vnet/bfd/bfd_api.c
index 0ae8508f865..4d76f71fd9f 100644
--- a/src/vnet/bfd/bfd_api.c
+++ b/src/vnet/bfd/bfd_api.c
@@ -71,6 +71,27 @@ vl_api_bfd_udp_add_t_handler (vl_api_bfd_udp_add_t * mp)
}
static void
+vl_api_bfd_udp_upd_t_handler (vl_api_bfd_udp_add_t *mp)
+{
+ vl_api_bfd_udp_upd_reply_t *rmp;
+ int rv;
+
+ VALIDATE_SW_IF_INDEX (mp);
+
+ BFD_UDP_API_PARAM_COMMON_CODE;
+
+ rv = bfd_udp_upd_session (
+ BFD_UDP_API_PARAM_FROM_MP (mp), clib_net_to_host_u32 (mp->desired_min_tx),
+ clib_net_to_host_u32 (mp->required_min_rx), mp->detect_mult,
+ mp->is_authenticated, clib_net_to_host_u32 (mp->conf_key_id),
+ mp->bfd_key_id);
+
+ BAD_SW_IF_INDEX_LABEL;
+ REPLY_MACRO2 (VL_API_BFD_UDP_UPD_REPLY,
+ ({ rmp->stats_index = clib_host_to_net_u32 (0); }));
+}
+
+static void
vl_api_bfd_udp_mod_t_handler (vl_api_bfd_udp_mod_t * mp)
{
vl_api_bfd_udp_mod_reply_t *rmp;
diff --git a/src/vnet/bfd/bfd_api.h b/src/vnet/bfd/bfd_api.h
index 2a6c69b78b6..f051e6b679c 100644
--- a/src/vnet/bfd/bfd_api.h
+++ b/src/vnet/bfd/bfd_api.h
@@ -45,6 +45,15 @@ bfd_udp_add_session (u32 sw_if_index, const ip46_address_t * local_addr,
u8 bfd_key_id);
/**
+ * @brief create a new or modify and existing bfd session
+ */
+vnet_api_error_t
+bfd_udp_upd_session (u32 sw_if_index, const ip46_address_t *local_addr,
+ const ip46_address_t *peer_addr, u32 desired_min_tx_usec,
+ u32 required_min_rx_usec, u8 detect_mult,
+ u8 is_authenticated, u32 conf_key_id, u8 bfd_key_id);
+
+/**
* @brief modify existing session
*/
vnet_api_error_t
diff --git a/src/vnet/bfd/bfd_udp.c b/src/vnet/bfd/bfd_udp.c
index 333b321f3c1..a58d9e2e1ca 100644
--- a/src/vnet/bfd/bfd_udp.c
+++ b/src/vnet/bfd/bfd_udp.c
@@ -738,6 +738,39 @@ bfd_udp_del_session_internal (vlib_main_t * vm, bfd_session_t * bs)
bfd_put_session (bum->bfd_main, bs);
}
+static vnet_api_error_t
+bfd_udp_add_and_start_session (u32 sw_if_index,
+ const ip46_address_t *local_addr,
+ const ip46_address_t *peer_addr,
+ u32 desired_min_tx_usec,
+ u32 required_min_rx_usec, u8 detect_mult,
+ u8 is_authenticated, u32 conf_key_id,
+ u8 bfd_key_id)
+{
+ bfd_session_t *bs = NULL;
+ vnet_api_error_t rv;
+
+ rv = bfd_udp_add_session_internal (
+ vlib_get_main (), &bfd_udp_main, sw_if_index, desired_min_tx_usec,
+ required_min_rx_usec, detect_mult, local_addr, peer_addr, &bs);
+
+ if (!rv && is_authenticated)
+ {
+ rv = bfd_auth_activate (bs, conf_key_id, bfd_key_id,
+ 0 /* is not delayed */);
+ if (rv)
+ {
+ bfd_udp_del_session_internal (vlib_get_main (), bs);
+ }
+ }
+ if (!rv)
+ {
+ bfd_session_start (bfd_udp_main.bfd_main, bs);
+ }
+
+ return rv;
+}
+
vnet_api_error_t
bfd_udp_add_session (u32 sw_if_index, const ip46_address_t * local_addr,
const ip46_address_t * peer_addr,
@@ -752,27 +785,44 @@ bfd_udp_add_session (u32 sw_if_index, const ip46_address_t * local_addr,
bfd_api_verify_common (sw_if_index, desired_min_tx_usec,
required_min_rx_usec, detect_mult,
local_addr, peer_addr);
- bfd_session_t *bs = NULL;
+
if (!rv)
- {
- rv =
- bfd_udp_add_session_internal (vlib_get_main (), &bfd_udp_main,
- sw_if_index, desired_min_tx_usec,
- required_min_rx_usec, detect_mult,
- local_addr, peer_addr, &bs);
- }
- if (!rv && is_authenticated)
- {
- rv = bfd_auth_activate (bs, conf_key_id, bfd_key_id,
- 0 /* is not delayed */ );
- if (rv)
- {
- bfd_udp_del_session_internal (vlib_get_main (), bs);
- }
- }
+ rv = bfd_udp_add_and_start_session (
+ sw_if_index, local_addr, peer_addr, desired_min_tx_usec,
+ required_min_rx_usec, detect_mult, is_authenticated, conf_key_id,
+ bfd_key_id);
+
+ bfd_unlock (bm);
+ return rv;
+}
+
+vnet_api_error_t
+bfd_udp_upd_session (u32 sw_if_index, const ip46_address_t *local_addr,
+ const ip46_address_t *peer_addr, u32 desired_min_tx_usec,
+ u32 required_min_rx_usec, u8 detect_mult,
+ u8 is_authenticated, u32 conf_key_id, u8 bfd_key_id)
+{
+ bfd_main_t *bm = &bfd_main;
+ bfd_lock (bm);
+
+ vnet_api_error_t rv = bfd_api_verify_common (
+ sw_if_index, desired_min_tx_usec, required_min_rx_usec, detect_mult,
+ local_addr, peer_addr);
if (!rv)
{
- bfd_session_start (bfd_udp_main.bfd_main, bs);
+ bfd_session_t *bs = NULL;
+
+ rv = bfd_udp_find_session_by_api_input (sw_if_index, local_addr,
+ peer_addr, &bs);
+ if (VNET_API_ERROR_BFD_ENOENT == rv)
+ rv = bfd_udp_add_and_start_session (
+ sw_if_index, local_addr, peer_addr, desired_min_tx_usec,
+ required_min_rx_usec, detect_mult, is_authenticated, conf_key_id,
+ bfd_key_id);
+ else
+ rv = bfd_session_set_params (bfd_udp_main.bfd_main, bs,
+ desired_min_tx_usec, required_min_rx_usec,
+ detect_mult);
}
bfd_unlock (bm);
@@ -780,10 +830,8 @@ bfd_udp_add_session (u32 sw_if_index, const ip46_address_t * local_addr,
}
vnet_api_error_t
-bfd_udp_mod_session (u32 sw_if_index,
- const ip46_address_t * local_addr,
- const ip46_address_t * peer_addr,
- u32 desired_min_tx_usec,
+bfd_udp_mod_session (u32 sw_if_index, const ip46_address_t *local_addr,
+ const ip46_address_t *peer_addr, u32 desired_min_tx_usec,
u32 required_min_rx_usec, u8 detect_mult)
{
bfd_session_t *bs = NULL;