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-rw-r--r--src/vnet/bfd/bfd_cli.c57
-rw-r--r--src/vnet/bfd/bfd_main.c136
-rw-r--r--src/vnet/bfd/bfd_main.h3
-rw-r--r--src/vnet/bfd/bfd_udp.c138
-rw-r--r--src/vnet/bfd/bfd_udp.h25
5 files changed, 282 insertions, 77 deletions
diff --git a/src/vnet/bfd/bfd_cli.c b/src/vnet/bfd/bfd_cli.c
index f15acb4ba36..44e671c534e 100644
--- a/src/vnet/bfd/bfd_cli.c
+++ b/src/vnet/bfd/bfd_cli.c
@@ -28,6 +28,7 @@
static u8 *
format_bfd_session_cli (u8 * s, va_list * args)
{
+ vlib_main_t *vm = va_arg (*args, vlib_main_t *);
bfd_main_t *bm = va_arg (*args, bfd_main_t *);
bfd_session_t *bs = va_arg (*args, bfd_session_t *);
switch (bs->transport)
@@ -51,7 +52,7 @@ format_bfd_session_cli (u8 * s, va_list * args)
bfd_diag_code_string (bs->remote_diag));
s = format (s, "%10s %-32s %20u %20u\n", "", "Detect multiplier",
bs->local_detect_mult, bs->remote_detect_mult);
- s = format (s, "%10s %-32s %20u %20u\n", "",
+ s = format (s, "%10s %-32s %20u %20llu\n", "",
"Required Min Rx Interval (usec)",
bs->config_required_min_rx_usec, bs->remote_min_rx_usec);
s = format (s, "%10s %-32s %20u %20u\n", "",
@@ -61,18 +62,54 @@ format_bfd_session_cli (u8 * s, va_list * args)
s =
format (s, "%10s %-32s %20u\n", "", "Transmit interval",
bfd_clocks_to_usec (bm, bs->transmit_interval_clocks));
+ u64 now = clib_cpu_time_now ();
+ u8 *tmp = NULL;
+ if (bs->last_tx_clocks > 0)
+ {
+ tmp = format (tmp, "%.2fs ago", (now - bs->last_tx_clocks) *
+ vm->clib_time.seconds_per_clock);
+ s = format (s, "%10s %-32s %20v\n", "", "Last control frame tx", tmp);
+ vec_reset_length (tmp);
+ }
+ if (bs->last_rx_clocks)
+ {
+ tmp = format (tmp, "%.2fs ago", (now - bs->last_rx_clocks) *
+ vm->clib_time.seconds_per_clock);
+ s = format (s, "%10s %-32s %20v\n", "", "Last control frame rx", tmp);
+ vec_reset_length (tmp);
+ }
s =
- format (s, "%10s %-32s %20s %20s\n", "", "Demand mode", "no",
- bs->remote_demand ? "yes" : "no");
- s =
- format (s, "%10s %-32s %20s\n", "", "Poll state",
- bfd_poll_state_string (bs->poll_state));
+ format (s, "%10s %-32s %20u %20llu\n", "", "Min Echo Rx Interval (usec)",
+ 1, bs->remote_min_echo_rx_usec);
+ if (bs->echo)
+ {
+ s = format (s, "%10s %-32s %20u\n", "", "Echo transmit interval",
+ bfd_clocks_to_usec (bm, bs->echo_transmit_interval_clocks));
+ tmp = format (tmp, "%.2fs ago", (now - bs->echo_last_tx_clocks) *
+ vm->clib_time.seconds_per_clock);
+ s = format (s, "%10s %-32s %20v\n", "", "Last echo frame tx", tmp);
+ vec_reset_length (tmp);
+ tmp = format (tmp, "%.6fs",
+ (bs->echo_last_rx_clocks - bs->echo_last_tx_clocks) *
+ vm->clib_time.seconds_per_clock);
+ s =
+ format (s, "%10s %-32s %20v\n", "", "Last echo frame roundtrip time",
+ tmp);
+ }
+ vec_free (tmp);
+ tmp = NULL;
+ s = format (s, "%10s %-32s %20s %20s\n", "", "Demand mode", "no",
+ bs->remote_demand ? "yes" : "no");
+ s = format (s, "%10s %-32s %20s\n", "", "Poll state",
+ bfd_poll_state_string (bs->poll_state));
if (bs->auth.curr_key)
{
s = format (s, "%10s %-32s %20u\n", "", "Authentication config key ID",
bs->auth.curr_key->conf_key_id);
s = format (s, "%10s %-32s %20u\n", "", "Authentication BFD key ID",
bs->auth.curr_bfd_key_id);
+ s = format (s, "%10s %-32s %20u %20u\n", "", "Sequence number",
+ bs->auth.local_seq_number, bs->auth.remote_seq_number);
}
return s;
}
@@ -96,6 +133,7 @@ show_bfd (vlib_main_t * vm, unformat_input_t * input,
});
/* *INDENT-ON* */
vlib_cli_output (vm, "%v\n", s);
+ vec_free (s);
vlib_cli_output (vm, "Number of configured BFD keys: %lu\n",
(u64) pool_elts (bm->auth_keys));
}
@@ -104,8 +142,9 @@ show_bfd (vlib_main_t * vm, unformat_input_t * input,
u8 *s = format (NULL, "%=10s %=32s %=20s %=20s\n", "Index", "Property",
"Local value", "Remote value");
/* *INDENT-OFF* */
- pool_foreach (bs, bm->sessions,
- { s = format (s, "%U", format_bfd_session_cli, bm, bs); });
+ pool_foreach (bs, bm->sessions, {
+ s = format (s, "%U", format_bfd_session_cli, vm, bm, bs);
+ });
/* *INDENT-ON* */
vlib_cli_output (vm, "%v", s);
vec_free (s);
@@ -349,7 +388,7 @@ static const unsigned optional = 0;
#define CHECK_MANDATORY(t, n, s, r, ...) \
if (mandatory == r && !have_##n) \
{ \
- ret = clib_error_return (0, "Required parameter `%s' missing.", n); \
+ ret = clib_error_return (0, "Required parameter `%s' missing.", s); \
goto out; \
}
diff --git a/src/vnet/bfd/bfd_main.c b/src/vnet/bfd/bfd_main.c
index ea6db1f9d27..2b70a20c9fd 100644
--- a/src/vnet/bfd/bfd_main.c
+++ b/src/vnet/bfd/bfd_main.c
@@ -63,13 +63,6 @@ bfd_clocks_to_usec (const bfd_main_t * bm, u64 clocks)
static vlib_node_registration_t bfd_process_node;
-/* set to 0 here, real values filled at startup */
-static u32 bfd_node_index_by_transport[] = {
-#define F(t, n) [BFD_TRANSPORT_##t] = 0,
- foreach_bfd_transport (F)
-#undef F
-};
-
u8 *
format_bfd_auth_key (u8 * s, va_list * args)
{
@@ -560,51 +553,70 @@ bfd_on_config_change (vlib_main_t * vm, vlib_node_runtime_t * rt,
}
static void
-bfd_add_transport_layer (vlib_main_t * vm, vlib_buffer_t * b,
- bfd_session_t * bs)
+bfd_add_transport_layer (vlib_main_t * vm, u32 bi, bfd_session_t * bs)
+{
+ switch (bs->transport)
+ {
+ case BFD_TRANSPORT_UDP4:
+ BFD_DBG ("Transport bfd via udp4, bs_idx=%u", bs->bs_idx);
+ bfd_add_udp4_transport (vm, bi, bs, 0 /* is_echo */ );
+ break;
+ case BFD_TRANSPORT_UDP6:
+ BFD_DBG ("Transport bfd via udp6, bs_idx=%u", bs->bs_idx);
+ bfd_add_udp6_transport (vm, bi, bs, 0 /* is_echo */ );
+ break;
+ }
+}
+
+static int
+bfd_transport_control_frame (vlib_main_t * vm, u32 bi, bfd_session_t * bs)
{
switch (bs->transport)
{
case BFD_TRANSPORT_UDP4:
BFD_DBG ("Transport bfd via udp4, bs_idx=%u", bs->bs_idx);
- bfd_add_udp4_transport (vm, b, bs, 0 /* is_echo */ );
+ return bfd_transport_udp4 (vm, bi, bs);
break;
case BFD_TRANSPORT_UDP6:
BFD_DBG ("Transport bfd via udp6, bs_idx=%u", bs->bs_idx);
- bfd_add_udp6_transport (vm, b, bs, 0 /* is_echo */ );
+ return bfd_transport_udp6 (vm, bi, bs);
break;
}
+ return 0;
}
static int
-bfd_echo_add_transport_layer (vlib_main_t * vm, vlib_buffer_t * b,
- bfd_session_t * bs)
+bfd_echo_add_transport_layer (vlib_main_t * vm, u32 bi, bfd_session_t * bs)
{
switch (bs->transport)
{
case BFD_TRANSPORT_UDP4:
BFD_DBG ("Transport bfd echo via udp4, bs_idx=%u", bs->bs_idx);
- return bfd_add_udp4_transport (vm, b, bs, 1 /* is_echo */ );
+ return bfd_add_udp4_transport (vm, bi, bs, 1 /* is_echo */ );
break;
case BFD_TRANSPORT_UDP6:
BFD_DBG ("Transport bfd echo via udp6, bs_idx=%u", bs->bs_idx);
- return bfd_add_udp6_transport (vm, b, bs, 1 /* is_echo */ );
+ return bfd_add_udp6_transport (vm, bi, bs, 1 /* is_echo */ );
break;
}
return 0;
}
-static void
-bfd_create_frame_to_next_node (vlib_main_t * vm, bfd_session_t * bs, u32 bi)
+static int
+bfd_transport_echo (vlib_main_t * vm, u32 bi, bfd_session_t * bs)
{
-
- vlib_frame_t *f =
- vlib_get_frame_to_node (vm, bfd_node_index_by_transport[bs->transport]);
-
- u32 *to_next = vlib_frame_vector_args (f);
- to_next[0] = bi;
- f->n_vectors = 1;
- vlib_put_frame_to_node (vm, bfd_node_index_by_transport[bs->transport], f);
+ switch (bs->transport)
+ {
+ case BFD_TRANSPORT_UDP4:
+ BFD_DBG ("Transport bfd echo via udp4, bs_idx=%u", bs->bs_idx);
+ return bfd_transport_udp4 (vm, bi, bs);
+ break;
+ case BFD_TRANSPORT_UDP6:
+ BFD_DBG ("Transport bfd echo via udp6, bs_idx=%u", bs->bs_idx);
+ return bfd_transport_udp6 (vm, bi, bs);
+ break;
+ }
+ return 0;
}
#if WITH_LIBSSL > 0
@@ -704,7 +716,7 @@ bfd_init_control_frame (bfd_main_t * bm, bfd_session_t * bs,
bfd_pkt_set_diag_code (pkt, bs->local_diag);
bfd_pkt_set_state (pkt, bs->local_state);
pkt->head.detect_mult = bs->local_detect_mult;
- pkt->head.length = clib_host_to_net_u32 (bfd_length);
+ pkt->head.length = bfd_length;
pkt->my_disc = bs->local_discr;
pkt->your_disc = bs->remote_discr;
pkt->des_min_tx = clib_host_to_net_u32 (bs->config_desired_min_tx_usec);
@@ -725,8 +737,7 @@ bfd_init_control_frame (bfd_main_t * bm, bfd_session_t * bs,
static void
bfd_send_echo (vlib_main_t * vm, vlib_node_runtime_t * rt,
- bfd_main_t * bm, bfd_session_t * bs, u64 now,
- int handling_wakeup)
+ bfd_main_t * bm, bfd_session_t * bs, u64 now)
{
if (!bfd_is_echo_possible (bs))
{
@@ -734,7 +745,8 @@ bfd_send_echo (vlib_main_t * vm, vlib_node_runtime_t * rt,
bs->echo = 0;
return;
}
- /* sometimes the wheel expires an event a bit sooner than requested, account
+ /* sometimes the wheel expires an event a bit sooner than requested,
+ account
for that here */
if (now + bm->wheel_inaccuracy >= bs->echo_tx_timeout_clocks)
{
@@ -747,6 +759,8 @@ bfd_send_echo (vlib_main_t * vm, vlib_node_runtime_t * rt,
}
vlib_buffer_t *b = vlib_get_buffer (vm, bi);
ASSERT (b->current_data == 0);
+ memset (vnet_buffer (b), 0, sizeof (*vnet_buffer (b)));
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b);
bfd_echo_pkt_t *pkt = vlib_buffer_get_current (b);
memset (pkt, 0, sizeof (*pkt));
pkt->discriminator = bs->local_discr;
@@ -756,7 +770,14 @@ bfd_send_echo (vlib_main_t * vm, vlib_node_runtime_t * rt,
bfd_calc_echo_checksum (bs->local_discr, pkt->expire_time_clocks,
bs->echo_secret);
b->current_length = sizeof (*pkt);
- if (!bfd_echo_add_transport_layer (vm, b, bs))
+ if (!bfd_echo_add_transport_layer (vm, bi, bs))
+ {
+ BFD_ERR ("cannot send echo packet out, turning echo off");
+ bs->echo = 0;
+ vlib_buffer_free_one (vm, bi);
+ return;
+ }
+ if (!bfd_transport_echo (vm, bi, bs))
{
BFD_ERR ("cannot send echo packet out, turning echo off");
bs->echo = 0;
@@ -765,7 +786,6 @@ bfd_send_echo (vlib_main_t * vm, vlib_node_runtime_t * rt,
}
bs->echo_last_tx_clocks = now;
bfd_calc_next_echo_tx (bm, bs, now);
- bfd_create_frame_to_next_node (vm, bs, bi);
}
else
{
@@ -777,8 +797,7 @@ bfd_send_echo (vlib_main_t * vm, vlib_node_runtime_t * rt,
static void
bfd_send_periodic (vlib_main_t * vm, vlib_node_runtime_t * rt,
- bfd_main_t * bm, bfd_session_t * bs, u64 now,
- int handling_wakeup)
+ bfd_main_t * bm, bfd_session_t * bs, u64 now)
{
if (!bs->remote_min_rx_usec && BFD_POLL_NOT_NEEDED == bs->poll_state)
{
@@ -798,8 +817,10 @@ bfd_send_periodic (vlib_main_t * vm, vlib_node_runtime_t * rt,
BFD_DBG ("Remote demand is set, not sending periodic control frame");
return;
}
- /* sometimes the wheel expires an event a bit sooner than requested, account
- for that here */
+ /*
+ * sometimes the wheel expires an event a bit sooner than requested, account
+ * for that here
+ */
if (now + bm->wheel_inaccuracy >= bs->tx_timeout_clocks)
{
BFD_DBG ("\nSending periodic control frame: %U", format_bfd_session,
@@ -812,6 +833,8 @@ bfd_send_periodic (vlib_main_t * vm, vlib_node_runtime_t * rt,
}
vlib_buffer_t *b = vlib_get_buffer (vm, bi);
ASSERT (b->current_data == 0);
+ memset (vnet_buffer (b), 0, sizeof (*vnet_buffer (b)));
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b);
bfd_init_control_frame (bm, bs, b);
switch (bs->poll_state)
{
@@ -837,10 +860,13 @@ bfd_send_periodic (vlib_main_t * vm, vlib_node_runtime_t * rt,
break;
}
bfd_add_auth_section (b, bs);
- bfd_add_transport_layer (vm, b, bs);
+ bfd_add_transport_layer (vm, bi, bs);
+ if (!bfd_transport_control_frame (vm, bi, bs))
+ {
+ vlib_buffer_free_one (vm, bi);
+ }
bs->last_tx_clocks = now;
bfd_calc_next_tx (bm, bs, now);
- bfd_create_frame_to_next_node (vm, bs, bi);
}
else
{
@@ -852,13 +878,15 @@ bfd_send_periodic (vlib_main_t * vm, vlib_node_runtime_t * rt,
void
bfd_init_final_control_frame (vlib_main_t * vm, vlib_buffer_t * b,
- bfd_main_t * bm, bfd_session_t * bs)
+ bfd_main_t * bm, bfd_session_t * bs,
+ int is_local)
{
BFD_DBG ("Send final control frame for bs_idx=%lu", bs->bs_idx);
bfd_init_control_frame (bm, bs, b);
bfd_pkt_set_final (vlib_buffer_get_current (b));
bfd_add_auth_section (b, bs);
- bfd_add_transport_layer (vm, b, bs);
+ u32 bi = vlib_get_buffer_index (vm, b);
+ bfd_add_transport_layer (vm, bi, bs);
bs->last_tx_clocks = clib_cpu_time_now ();
/*
* RFC allows to include changes in final frame, so if there were any
@@ -871,8 +899,10 @@ static void
bfd_check_rx_timeout (bfd_main_t * bm, bfd_session_t * bs, u64 now,
int handling_wakeup)
{
- /* sometimes the wheel expires an event a bit sooner than requested, account
- for that here */
+ /*
+ * sometimes the wheel expires an event a bit sooner than requested, account
+ * for that here
+ */
if (bs->last_rx_clocks + bs->detection_time_clocks <=
now + bm->wheel_inaccuracy)
{
@@ -907,14 +937,14 @@ bfd_on_timeout (vlib_main_t * vm, vlib_node_runtime_t * rt, bfd_main_t * bm,
switch (bs->local_state)
{
case BFD_STATE_admin_down:
- bfd_send_periodic (vm, rt, bm, bs, now, 1);
+ bfd_send_periodic (vm, rt, bm, bs, now);
break;
case BFD_STATE_down:
- bfd_send_periodic (vm, rt, bm, bs, now, 1);
+ bfd_send_periodic (vm, rt, bm, bs, now);
break;
case BFD_STATE_init:
bfd_check_rx_timeout (bm, bs, now, 1);
- bfd_send_periodic (vm, rt, bm, bs, now, 1);
+ bfd_send_periodic (vm, rt, bm, bs, now);
break;
case BFD_STATE_up:
bfd_check_rx_timeout (bm, bs, now, 1);
@@ -932,10 +962,10 @@ bfd_on_timeout (vlib_main_t * vm, vlib_node_runtime_t * rt, bfd_main_t * bm,
bs->config_required_min_rx_clocks));
bfd_set_poll_state (bs, BFD_POLL_NEEDED);
}
- bfd_send_periodic (vm, rt, bm, bs, now, 1);
+ bfd_send_periodic (vm, rt, bm, bs, now);
if (bs->echo)
{
- bfd_send_echo (vm, rt, bm, bs, now, 1);
+ bfd_send_echo (vm, rt, bm, bs, now);
}
break;
}
@@ -996,7 +1026,8 @@ bfd_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
{
bfd_session_t *bs =
pool_elt_at_index (bm->sessions, *event_data);
- bfd_send_periodic (vm, rt, bm, bs, now, 1);
+ bfd_send_periodic (vm, rt, bm, bs, now);
+ bfd_set_timer (bm, bs, now, 1);
}
else
{
@@ -1113,14 +1144,6 @@ bfd_main_init (vlib_main_t * vm)
const u64 now = clib_cpu_time_now ();
timing_wheel_init (&bm->wheel, now, bm->cpu_cps);
bm->wheel_inaccuracy = 2 << bm->wheel.log2_clocks_per_bin;
-
- vlib_node_t *node = NULL;
-#define F(t, n) \
- node = vlib_get_node_by_name (vm, (u8 *)n); \
- bfd_node_index_by_transport[BFD_TRANSPORT_##t] = node->index; \
- BFD_DBG ("node '%s' has index %u", n, node->index);
- foreach_bfd_transport (F);
-#undef F
return 0;
}
@@ -1654,10 +1677,12 @@ bfd_consume_pkt (bfd_main_t * bm, const bfd_pkt_t * pkt, u32 bs_idx)
{
if (BFD_STATE_down == bs->remote_state)
{
+ bfd_set_diag (bs, BFD_DIAG_CODE_no_diag);
bfd_set_state (bm, bs, BFD_STATE_init, 0);
}
else if (BFD_STATE_init == bs->remote_state)
{
+ bfd_set_diag (bs, BFD_DIAG_CODE_no_diag);
bfd_set_state (bm, bs, BFD_STATE_up, 0);
}
}
@@ -1666,6 +1691,7 @@ bfd_consume_pkt (bfd_main_t * bm, const bfd_pkt_t * pkt, u32 bs_idx)
if (BFD_STATE_up == bs->remote_state ||
BFD_STATE_init == bs->remote_state)
{
+ bfd_set_diag (bs, BFD_DIAG_CODE_no_diag);
bfd_set_state (bm, bs, BFD_STATE_up, 0);
}
}
diff --git a/src/vnet/bfd/bfd_main.h b/src/vnet/bfd/bfd_main.h
index 4d460f41f46..d722a55274c 100644
--- a/src/vnet/bfd/bfd_main.h
+++ b/src/vnet/bfd/bfd_main.h
@@ -316,7 +316,8 @@ int bfd_verify_pkt_auth (const bfd_pkt_t * pkt, u16 pkt_size,
bfd_session_t * bs);
void bfd_event (bfd_main_t * bm, bfd_session_t * bs);
void bfd_init_final_control_frame (vlib_main_t * vm, vlib_buffer_t * b,
- bfd_main_t * bm, bfd_session_t * bs);
+ bfd_main_t * bm, bfd_session_t * bs,
+ int is_local);
u8 *format_bfd_session (u8 * s, va_list * args);
u8 *format_bfd_auth_key (u8 * s, va_list * args);
void bfd_session_set_flags (bfd_session_t * bs, u8 admin_up_down);
diff --git a/src/vnet/bfd/bfd_udp.c b/src/vnet/bfd/bfd_udp.c
index b3eabc9cda9..ebee590b795 100644
--- a/src/vnet/bfd/bfd_udp.c
+++ b/src/vnet/bfd/bfd_udp.c
@@ -51,6 +51,14 @@ typedef struct
int echo_source_is_set;
/* loopback interface used to get echo source ip */
u32 echo_source_sw_if_index;
+ /* node index of "ip4-arp" node */
+ u32 ip4_arp_idx;
+ /* node index of "ip6-discover-neighbor" node */
+ u32 ip6_ndp_idx;
+ /* node index of "ip4-rewrite" node */
+ u32 ip4_rewrite_idx;
+ /* node index of "ip6-rewrite" node */
+ u32 ip6_rewrite_idx;
} bfd_udp_main_t;
static vlib_node_registration_t bfd_udp4_input_node;
@@ -231,15 +239,18 @@ bfd_udp_get_echo_source (int *is_set, u32 * sw_if_index, int *have_usable_ip4,
}
int
-bfd_add_udp4_transport (vlib_main_t * vm, vlib_buffer_t * b,
+bfd_add_udp4_transport (vlib_main_t * vm, u32 bi,
const bfd_session_t * bs, int is_echo)
{
const bfd_udp_session_t *bus = &bs->udp;
const bfd_udp_key_t *key = &bus->key;
+ vlib_buffer_t *b = vlib_get_buffer (vm, bi);
b->flags |= VNET_BUFFER_LOCALLY_ORIGINATED;
vnet_buffer (b)->ip.adj_index[VLIB_RX] = bus->adj_index;
vnet_buffer (b)->ip.adj_index[VLIB_TX] = bus->adj_index;
+ vnet_buffer (b)->sw_if_index[VLIB_RX] = 0;
+ vnet_buffer (b)->sw_if_index[VLIB_TX] = ~0;
typedef struct
{
ip4_header_t ip4;
@@ -283,15 +294,18 @@ bfd_add_udp4_transport (vlib_main_t * vm, vlib_buffer_t * b,
}
int
-bfd_add_udp6_transport (vlib_main_t * vm, vlib_buffer_t * b,
+bfd_add_udp6_transport (vlib_main_t * vm, u32 bi,
const bfd_session_t * bs, int is_echo)
{
const bfd_udp_session_t *bus = &bs->udp;
const bfd_udp_key_t *key = &bus->key;
+ vlib_buffer_t *b = vlib_get_buffer (vm, bi);
b->flags |= VNET_BUFFER_LOCALLY_ORIGINATED;
vnet_buffer (b)->ip.adj_index[VLIB_RX] = bus->adj_index;
vnet_buffer (b)->ip.adj_index[VLIB_TX] = bus->adj_index;
+ vnet_buffer (b)->sw_if_index[VLIB_RX] = 0;
+ vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
typedef struct
{
ip6_header_t ip6;
@@ -346,6 +360,76 @@ bfd_add_udp6_transport (vlib_main_t * vm, vlib_buffer_t * b,
return 1;
}
+static void
+bfd_create_frame_to_next_node (vlib_main_t * vm, u32 bi, u32 next_node)
+{
+ vlib_frame_t *f = vlib_get_frame_to_node (vm, next_node);
+ u32 *to_next = vlib_frame_vector_args (f);
+ to_next[0] = bi;
+ f->n_vectors = 1;
+ vlib_put_frame_to_node (vm, next_node, f);
+}
+
+int
+bfd_udp_calc_next_node (const struct bfd_session_s *bs, u32 * next_node)
+{
+ const bfd_udp_session_t *bus = &bs->udp;
+ ip_adjacency_t *adj = adj_get (bus->adj_index);
+ switch (adj->lookup_next_index)
+ {
+ case IP_LOOKUP_NEXT_ARP:
+ switch (bs->transport)
+ {
+ case BFD_TRANSPORT_UDP4:
+ *next_node = bfd_udp_main.ip4_arp_idx;
+ return 1;
+ case BFD_TRANSPORT_UDP6:
+ *next_node = bfd_udp_main.ip6_ndp_idx;
+ return 1;
+ }
+ break;
+ case IP_LOOKUP_NEXT_REWRITE:
+ switch (bs->transport)
+ {
+ case BFD_TRANSPORT_UDP4:
+ *next_node = bfd_udp_main.ip4_rewrite_idx;
+ return 1;
+ case BFD_TRANSPORT_UDP6:
+ *next_node = bfd_udp_main.ip6_rewrite_idx;
+ return 1;
+ }
+ break;
+ default:
+ /* drop */
+ break;
+ }
+ return 0;
+}
+
+int
+bfd_transport_udp4 (vlib_main_t * vm, u32 bi, const struct bfd_session_s *bs)
+{
+ u32 next_node;
+ int rv = bfd_udp_calc_next_node (bs, &next_node);
+ if (rv)
+ {
+ bfd_create_frame_to_next_node (vm, bi, next_node);
+ }
+ return rv;
+}
+
+int
+bfd_transport_udp6 (vlib_main_t * vm, u32 bi, const struct bfd_session_s *bs)
+{
+ u32 next_node;
+ int rv = bfd_udp_calc_next_node (bs, &next_node);
+ if (rv)
+ {
+ bfd_create_frame_to_next_node (vm, bi, next_node);
+ }
+ return 1;
+}
+
static bfd_session_t *
bfd_lookup_session (bfd_udp_main_t * bum, const bfd_udp_key_t * key)
{
@@ -703,7 +787,8 @@ bfd_udp_auth_deactivate (u32 sw_if_index,
typedef enum
{
BFD_UDP_INPUT_NEXT_NORMAL,
- BFD_UDP_INPUT_NEXT_REPLY,
+ BFD_UDP_INPUT_NEXT_REPLY_ARP,
+ BFD_UDP_INPUT_NEXT_REPLY_REWRITE,
BFD_UDP_INPUT_N_NEXT,
} bfd_udp_input_next_t;
@@ -1112,8 +1197,11 @@ bfd_udp_input (vlib_main_t * vm, vlib_node_runtime_t * rt,
const bfd_pkt_t *pkt = vlib_buffer_get_current (b0);
if (bfd_pkt_get_poll (pkt))
{
+ b0->current_data = 0;
+ b0->current_length = 0;
+ memset (vnet_buffer (b0), 0, sizeof (*vnet_buffer (b0)));
bfd_init_final_control_frame (vm, b0, bfd_udp_main.bfd_main,
- bs);
+ bs, 0);
if (is_ipv6)
{
vlib_node_increment_counter (vm, bfd_udp6_input_node.index,
@@ -1124,7 +1212,20 @@ bfd_udp_input (vlib_main_t * vm, vlib_node_runtime_t * rt,
vlib_node_increment_counter (vm, bfd_udp4_input_node.index,
b0->error, 1);
}
- next0 = BFD_UDP_INPUT_NEXT_REPLY;
+ const bfd_udp_session_t *bus = &bs->udp;
+ ip_adjacency_t *adj = adj_get (bus->adj_index);
+ switch (adj->lookup_next_index)
+ {
+ case IP_LOOKUP_NEXT_ARP:
+ next0 = BFD_UDP_INPUT_NEXT_REPLY_ARP;
+ break;
+ case IP_LOOKUP_NEXT_REWRITE:
+ next0 = BFD_UDP_INPUT_NEXT_REPLY_REWRITE;
+ break;
+ default:
+ /* drop */
+ break;
+ }
}
}
vlib_set_next_frame_buffer (vm, rt, next0, bi0);
@@ -1161,7 +1262,8 @@ VLIB_REGISTER_NODE (bfd_udp4_input_node, static) = {
.next_nodes =
{
[BFD_UDP_INPUT_NEXT_NORMAL] = "error-drop",
- [BFD_UDP_INPUT_NEXT_REPLY] = "ip4-lookup",
+ [BFD_UDP_INPUT_NEXT_REPLY_ARP] = "ip4-arp",
+ [BFD_UDP_INPUT_NEXT_REPLY_REWRITE] = "ip4-lookup",
},
};
/* *INDENT-ON* */
@@ -1188,7 +1290,8 @@ VLIB_REGISTER_NODE (bfd_udp6_input_node, static) = {
.next_nodes =
{
[BFD_UDP_INPUT_NEXT_NORMAL] = "error-drop",
- [BFD_UDP_INPUT_NEXT_REPLY] = "ip6-lookup",
+ [BFD_UDP_INPUT_NEXT_REPLY_ARP] = "ip6-discover-neighbor",
+ [BFD_UDP_INPUT_NEXT_REPLY_REWRITE] = "ip6-lookup",
},
};
/* *INDENT-ON* */
@@ -1246,7 +1349,7 @@ bfd_udp_echo_input (vlib_main_t * vm, vlib_node_runtime_t * rt,
vlib_node_increment_counter (vm, bfd_udp_echo4_input_node.index,
b0->error, 1);
}
- next0 = BFD_UDP_INPUT_NEXT_REPLY;
+ next0 = BFD_UDP_INPUT_NEXT_REPLY_REWRITE;
}
vlib_set_next_frame_buffer (vm, rt, next0, bi0);
@@ -1300,7 +1403,8 @@ VLIB_REGISTER_NODE (bfd_udp_echo4_input_node, static) = {
.next_nodes =
{
[BFD_UDP_INPUT_NEXT_NORMAL] = "error-drop",
- [BFD_UDP_INPUT_NEXT_REPLY] = "ip4-lookup",
+ [BFD_UDP_INPUT_NEXT_REPLY_ARP] = "ip4-arp",
+ [BFD_UDP_INPUT_NEXT_REPLY_REWRITE] = "ip4-lookup",
},
};
/* *INDENT-ON* */
@@ -1328,7 +1432,8 @@ VLIB_REGISTER_NODE (bfd_udp_echo6_input_node, static) = {
.next_nodes =
{
[BFD_UDP_INPUT_NEXT_NORMAL] = "error-drop",
- [BFD_UDP_INPUT_NEXT_REPLY] = "ip6-lookup",
+ [BFD_UDP_INPUT_NEXT_REPLY_ARP] = "ip6-discover-neighbor",
+ [BFD_UDP_INPUT_NEXT_REPLY_REWRITE] = "ip6-lookup",
},
};
@@ -1375,6 +1480,19 @@ bfd_udp_init (vlib_main_t * vm)
bfd_udp_echo4_input_node.index, 1);
udp_register_dst_port (vm, UDP_DST_PORT_bfd_echo6,
bfd_udp_echo6_input_node.index, 0);
+ vlib_node_t *node = vlib_get_node_by_name (vm, (u8 *) "ip4-arp");
+ ASSERT (node);
+ bfd_udp_main.ip4_arp_idx = node->index;
+ node = vlib_get_node_by_name (vm, (u8 *) "ip6-discover-neighbor");
+ ASSERT (node);
+ bfd_udp_main.ip6_ndp_idx = node->index;
+ node = vlib_get_node_by_name (vm, (u8 *) "ip4-rewrite");
+ ASSERT (node);
+ bfd_udp_main.ip4_rewrite_idx = node->index;
+ node = vlib_get_node_by_name (vm, (u8 *) "ip6-rewrite");
+ ASSERT (node);
+ bfd_udp_main.ip6_rewrite_idx = node->index;
+
return 0;
}
diff --git a/src/vnet/bfd/bfd_udp.h b/src/vnet/bfd/bfd_udp.h
index 5080ec98f75..a4adbadf861 100644
--- a/src/vnet/bfd/bfd_udp.h
+++ b/src/vnet/bfd/bfd_udp.h
@@ -57,11 +57,12 @@ struct bfd_session_s;
/**
* @brief add the necessary transport layer by prepending it to existing data
*
+ *
* @param is_echo 1 if this is echo packet, 0 if control frame
*
* @return 1 on success, 0 on failure
*/
-int bfd_add_udp4_transport (vlib_main_t * vm, vlib_buffer_t * b,
+int bfd_add_udp4_transport (vlib_main_t * vm, u32 bi,
const struct bfd_session_s *bs, int is_echo);
/**
@@ -71,10 +72,30 @@ int bfd_add_udp4_transport (vlib_main_t * vm, vlib_buffer_t * b,
*
* @return 1 on success, 0 on failure
*/
-int bfd_add_udp6_transport (vlib_main_t * vm, vlib_buffer_t * b,
+int bfd_add_udp6_transport (vlib_main_t * vm, u32 bi,
const struct bfd_session_s *bs, int is_echo);
/**
+ * @brief transport packet over udpv4
+ *
+ * @param is_echo 1 if this is echo packet, 0 if control frame
+ *
+ * @return 1 on success, 0 on failure
+ */
+int bfd_transport_udp4 (vlib_main_t * vm, u32 bi,
+ const struct bfd_session_s *bs);
+
+/**
+ * @brief transport packet over udpv6
+ *
+ * @param is_echo 1 if this is echo packet, 0 if control frame
+ *
+ * @return 1 on success, 0 on failure
+ */
+int bfd_transport_udp6 (vlib_main_t * vm, u32 bi,
+ const struct bfd_session_s *bs);
+
+/**
* @brief check if the bfd udp layer is echo-capable at this time
*
* @return 1 if available, 0 otherwise