* @brief BFD nodes implementation
*/
-#if WITH_LIBSSL > 0
-#include <openssl/sha.h>
-#endif
-
-#if __SSE4_2__
-#include <x86intrin.h>
-#endif
-
#include <vlibmemory/api.h>
#include <vppinfra/random.h>
#include <vppinfra/error.h>
#include <vnet/bfd/bfd_protocol.h>
#include <vnet/bfd/bfd_main.h>
#include <vlib/log.h>
+#include <vnet/crypto/crypto.h>
static u64
bfd_calc_echo_checksum (u32 discriminator, u64 expire_time, u32 secret)
{
u64 checksum = 0;
#if defined(clib_crc32c_uses_intrinsics) && !defined (__i386__)
- checksum = crc32_u64 (0, discriminator);
- checksum = crc32_u64 (checksum, expire_time);
- checksum = crc32_u64 (checksum, secret);
+ checksum = clib_crc32c_u64 (0, discriminator);
+ checksum = clib_crc32c_u64 (checksum, expire_time);
+ checksum = clib_crc32c_u64 (checksum, secret);
#else
checksum = clib_xxhash (discriminator ^ expire_time ^ secret);
#endif
}
static u64
-bfd_usec_to_clocks (const bfd_main_t * bm, u64 us)
+bfd_usec_to_nsec (u64 us)
{
- return bm->cpu_cps * ((f64) us / USEC_PER_SECOND);
+ return us * NSEC_PER_USEC;
}
u32
-bfd_clocks_to_usec (const bfd_main_t * bm, u64 clocks)
+bfd_nsec_to_usec (u64 nsec)
+{
+ return nsec / NSEC_PER_USEC;
+}
+
+always_inline u64
+bfd_time_now_nsec (vlib_main_t * vm, f64 * vm_time)
{
- return (clocks / bm->cpu_cps) * USEC_PER_SECOND;
+ f64 _vm_time = vlib_time_now (vm);
+ if (vm_time)
+ *vm_time = _vm_time;
+ return _vm_time * NSEC_PER_SEC;
}
static vlib_node_registration_t bfd_process_node;
bs->remote_discr = 0;
bs->hop_type = BFD_HOP_TYPE_SINGLE;
bs->config_desired_min_tx_usec = BFD_DEFAULT_DESIRED_MIN_TX_USEC;
- bs->config_desired_min_tx_clocks = bm->default_desired_min_tx_clocks;
- bs->effective_desired_min_tx_clocks = bm->default_desired_min_tx_clocks;
+ bs->config_desired_min_tx_nsec = bm->default_desired_min_tx_nsec;
+ bs->effective_desired_min_tx_nsec = bm->default_desired_min_tx_nsec;
bs->remote_min_rx_usec = 1;
- bs->remote_min_rx_clocks = bfd_usec_to_clocks (bm, bs->remote_min_rx_usec);
+ bs->remote_min_rx_nsec = bfd_usec_to_nsec (bs->remote_min_rx_usec);
bs->remote_min_echo_rx_usec = 0;
- bs->remote_min_echo_rx_clocks = 0;
+ bs->remote_min_echo_rx_nsec = 0;
bs->remote_demand = 0;
bs->auth.remote_seq_number = 0;
bs->auth.remote_seq_number_known = 0;
}
static void
-bfd_set_state (bfd_main_t * bm, bfd_session_t * bs,
+bfd_set_state (vlib_main_t * vm, bfd_main_t * bm, bfd_session_t * bs,
bfd_state_e new_state, int handling_wakeup)
{
if (bs->local_state != new_state)
bfd_state_string (bs->local_state),
bfd_state_string (new_state));
bs->local_state = new_state;
- bfd_on_state_change (bm, bs, clib_cpu_time_now (), handling_wakeup);
+ bfd_on_state_change (bm, bs, bfd_time_now_nsec (vm, NULL),
+ handling_wakeup);
}
}
}
static void
-bfd_recalc_tx_interval (bfd_main_t * bm, bfd_session_t * bs)
+bfd_recalc_tx_interval (bfd_session_t *bs)
{
- bs->transmit_interval_clocks =
- clib_max (bs->effective_desired_min_tx_clocks, bs->remote_min_rx_clocks);
+ bs->transmit_interval_nsec =
+ clib_max (bs->effective_desired_min_tx_nsec, bs->remote_min_rx_nsec);
BFD_DBG ("Recalculated transmit interval " BFD_CLK_FMT,
- BFD_CLK_PRN (bs->transmit_interval_clocks));
+ BFD_CLK_PRN (bs->transmit_interval_nsec));
}
static void
-bfd_recalc_echo_tx_interval (bfd_main_t * bm, bfd_session_t * bs)
+bfd_recalc_echo_tx_interval (bfd_session_t *bs)
{
- bs->echo_transmit_interval_clocks =
- clib_max (bs->effective_desired_min_tx_clocks,
- bs->remote_min_echo_rx_clocks);
+ bs->echo_transmit_interval_nsec =
+ clib_max (bs->effective_desired_min_tx_nsec, bs->remote_min_echo_rx_nsec);
BFD_DBG ("Recalculated echo transmit interval " BFD_CLK_FMT,
- BFD_CLK_PRN (bs->echo_transmit_interval_clocks));
+ BFD_CLK_PRN (bs->echo_transmit_interval_nsec));
}
static void
if (bs->local_detect_mult > 1)
{
/* common case - 75-100% of transmit interval */
- bs->tx_timeout_clocks = bs->last_tx_clocks +
+ bs->tx_timeout_nsec = bs->last_tx_nsec +
(1 - .25 * (random_f64 (&bm->random_seed))) *
- bs->transmit_interval_clocks;
- if (bs->tx_timeout_clocks < now)
+ bs->transmit_interval_nsec;
+ if (bs->tx_timeout_nsec < now)
{
/*
* the timeout is in the past, which means that either remote
*/
BFD_DBG ("Missed %lu transmit events (now is %lu, calc "
"tx_timeout is %lu)",
- (now - bs->tx_timeout_clocks) /
- bs->transmit_interval_clocks, now, bs->tx_timeout_clocks);
- bs->tx_timeout_clocks = now;
+ (now - bs->tx_timeout_nsec) /
+ bs->transmit_interval_nsec, now, bs->tx_timeout_nsec);
+ bs->tx_timeout_nsec = now;
}
}
else
{
/* special case - 75-90% of transmit interval */
- bs->tx_timeout_clocks = bs->last_tx_clocks +
+ bs->tx_timeout_nsec = bs->last_tx_nsec +
(.9 - .15 * (random_f64 (&bm->random_seed))) *
- bs->transmit_interval_clocks;
- if (bs->tx_timeout_clocks < now)
+ bs->transmit_interval_nsec;
+ if (bs->tx_timeout_nsec < now)
{
/*
* the timeout is in the past, which means that either remote
*/
BFD_DBG ("Missed %lu transmit events (now is %lu, calc "
"tx_timeout is %lu)",
- (now - bs->tx_timeout_clocks) /
- bs->transmit_interval_clocks, now, bs->tx_timeout_clocks);
- bs->tx_timeout_clocks = now;
+ (now - bs->tx_timeout_nsec) /
+ bs->transmit_interval_nsec, now, bs->tx_timeout_nsec);
+ bs->tx_timeout_nsec = now;
}
}
- if (bs->tx_timeout_clocks)
+ if (bs->tx_timeout_nsec)
{
- BFD_DBG ("Next transmit in %lu clocks/%.02fs@%lu",
- bs->tx_timeout_clocks - now,
- (bs->tx_timeout_clocks - now) / bm->cpu_cps,
- bs->tx_timeout_clocks);
+ BFD_DBG ("Next transmit in %lu nsec/%.02fs@%lu",
+ bs->tx_timeout_nsec - now,
+ (bs->tx_timeout_nsec - now) * SEC_PER_NSEC,
+ bs->tx_timeout_nsec);
}
}
static void
-bfd_calc_next_echo_tx (bfd_main_t * bm, bfd_session_t * bs, u64 now)
+bfd_calc_next_echo_tx (bfd_session_t *bs, u64 now)
{
- bs->echo_tx_timeout_clocks =
- bs->echo_last_tx_clocks + bs->echo_transmit_interval_clocks;
- if (bs->echo_tx_timeout_clocks < now)
+ bs->echo_tx_timeout_nsec =
+ bs->echo_last_tx_nsec + bs->echo_transmit_interval_nsec;
+ if (bs->echo_tx_timeout_nsec < now)
{
/* huh, we've missed it already, transmit now */
BFD_DBG ("Missed %lu echo transmit events (now is %lu, calc tx_timeout "
"is %lu)",
- (now - bs->echo_tx_timeout_clocks) /
- bs->echo_transmit_interval_clocks,
- now, bs->echo_tx_timeout_clocks);
- bs->echo_tx_timeout_clocks = now;
+ (now - bs->echo_tx_timeout_nsec) /
+ bs->echo_transmit_interval_nsec,
+ now, bs->echo_tx_timeout_nsec);
+ bs->echo_tx_timeout_nsec = now;
}
- BFD_DBG ("Next echo transmit in %lu clocks/%.02fs@%lu",
- bs->echo_tx_timeout_clocks - now,
- (bs->echo_tx_timeout_clocks - now) / bm->cpu_cps,
- bs->echo_tx_timeout_clocks);
+ BFD_DBG ("Next echo transmit in %lu nsec/%.02fs@%lu",
+ bs->echo_tx_timeout_nsec - now,
+ (bs->echo_tx_timeout_nsec - now) * SEC_PER_NSEC,
+ bs->echo_tx_timeout_nsec);
}
static void
-bfd_recalc_detection_time (bfd_main_t * bm, bfd_session_t * bs)
+bfd_recalc_detection_time (bfd_session_t *bs)
{
if (bs->local_state == BFD_STATE_init || bs->local_state == BFD_STATE_up)
{
- bs->detection_time_clocks =
+ bs->detection_time_nsec =
bs->remote_detect_mult *
- clib_max (bs->effective_required_min_rx_clocks,
- bs->remote_desired_min_tx_clocks);
- BFD_DBG ("Recalculated detection time %lu clocks/%.2fs",
- bs->detection_time_clocks,
- bs->detection_time_clocks / bm->cpu_cps);
+ clib_max (bs->effective_required_min_rx_nsec,
+ bs->remote_desired_min_tx_nsec);
+ BFD_DBG ("Recalculated detection time %lu nsec/%.3fs",
+ bs->detection_time_nsec,
+ bs->detection_time_nsec * SEC_PER_NSEC);
}
}
u64 tx_timeout = 0;
if (BFD_STATE_up == bs->local_state)
{
- rx_timeout = bs->last_rx_clocks + bs->detection_time_clocks;
+ rx_timeout = bs->last_rx_nsec + bs->detection_time_nsec;
}
if (BFD_STATE_up != bs->local_state ||
(!bs->remote_demand && bs->remote_min_rx_usec) ||
BFD_POLL_NOT_NEEDED != bs->poll_state)
{
- tx_timeout = bs->tx_timeout_clocks;
+ tx_timeout = bs->tx_timeout_nsec;
}
if (tx_timeout && rx_timeout)
{
{
next = rx_timeout;
}
- if (bs->echo && next > bs->echo_tx_timeout_clocks)
+ if (bs->echo && next > bs->echo_tx_timeout_nsec)
{
- next = bs->echo_tx_timeout_clocks;
+ next = bs->echo_tx_timeout_nsec;
}
BFD_DBG ("bs_idx=%u, tx_timeout=%lu, echo_tx_timeout=%lu, rx_timeout=%lu, "
"next=%s",
- bs->bs_idx, tx_timeout, bs->echo_tx_timeout_clocks, rx_timeout,
+ bs->bs_idx, tx_timeout, bs->echo_tx_timeout_nsec, rx_timeout,
next == tx_timeout
- ? "tx" : (next == bs->echo_tx_timeout_clocks ? "echo tx" : "rx"));
- /* sometimes the wheel expires an event a bit sooner than requested, account
- for that here */
- if (next && (now + bm->wheel_inaccuracy > bs->wheel_time_clocks ||
- next < bs->wheel_time_clocks || !bs->wheel_time_clocks))
+ ? "tx" : (next == bs->echo_tx_timeout_nsec ? "echo tx" : "rx"));
+ if (next)
{
int send_signal = 0;
- bs->wheel_time_clocks = next;
- BFD_DBG ("timing_wheel_insert(%p, %lu (%ld clocks/%.2fs in the "
- "future), %u);",
- &bm->wheel, bs->wheel_time_clocks,
- (i64) bs->wheel_time_clocks - clib_cpu_time_now (),
- (i64) (bs->wheel_time_clocks - clib_cpu_time_now ()) /
- bm->cpu_cps, bs->bs_idx);
+ bs->event_time_nsec = next;
+ /* add extra tick if it's not even */
+ u32 wheel_time_ticks =
+ (bs->event_time_nsec - now) / bm->nsec_per_tw_tick +
+ ((bs->event_time_nsec - now) % bm->nsec_per_tw_tick != 0);
+ BFD_DBG ("event_time_nsec %lu (%lu nsec/%.3fs in future) -> "
+ "wheel_time_ticks %u", bs->event_time_nsec,
+ bs->event_time_nsec - now,
+ (bs->event_time_nsec - now) * SEC_PER_NSEC, wheel_time_ticks);
+ wheel_time_ticks = wheel_time_ticks ? wheel_time_ticks : 1;
bfd_lock (bm);
- timing_wheel_insert (&bm->wheel, bs->wheel_time_clocks, bs->bs_idx);
+ if (bs->tw_id)
+ {
+ TW (tw_timer_update) (&bm->wheel, bs->tw_id, wheel_time_ticks);
+ BFD_DBG ("tw_timer_update(%p, %u, %lu);", &bm->wheel, bs->tw_id,
+ wheel_time_ticks);
+ }
+ else
+ {
+ bs->tw_id =
+ TW (tw_timer_start) (&bm->wheel, bs->bs_idx, 0, wheel_time_ticks);
+ BFD_DBG ("tw_timer_start(%p, %u, 0, %lu) == %u;", &bm->wheel,
+ bs->bs_idx, wheel_time_ticks);
+ }
if (!handling_wakeup)
{
/* Send only if it is earlier than current awaited wakeup time */
send_signal =
- (bs->wheel_time_clocks < bm->bfd_process_next_wakeup_clocks) &&
+ (bs->event_time_nsec < bm->bfd_process_next_wakeup_nsec) &&
/*
* If the wake-up time is within 2x the delay of the event propagation delay,
* avoid the expense of sending the event. The 2x multiplier is to workaround the race whereby
* simultaneous event + expired timer create one recurring bogus wakeup/suspend instance,
* due to double scheduling of the node on the pending list.
*/
- (bm->bfd_process_next_wakeup_clocks - bs->wheel_time_clocks >
- 2 * bm->bfd_process_wakeup_event_delay_clocks) &&
+ (bm->bfd_process_next_wakeup_nsec - bs->event_time_nsec >
+ 2 * bm->bfd_process_wakeup_event_delay_nsec) &&
/* Must be no events in flight to send an event */
(!bm->bfd_process_wakeup_events_in_flight);
if (send_signal)
{
bm->bfd_process_wakeup_events_in_flight++;
- bm->bfd_process_wakeup_event_start_clocks = now;
+ bm->bfd_process_wakeup_event_start_nsec = now;
}
}
bfd_unlock (bm);
static void
bfd_set_effective_desired_min_tx (bfd_main_t * bm,
bfd_session_t * bs, u64 now,
- u64 desired_min_tx_clocks)
+ u64 desired_min_tx_nsec)
{
- bs->effective_desired_min_tx_clocks = desired_min_tx_clocks;
+ bs->effective_desired_min_tx_nsec = desired_min_tx_nsec;
BFD_DBG ("Set effective desired min tx to " BFD_CLK_FMT,
- BFD_CLK_PRN (bs->effective_desired_min_tx_clocks));
- bfd_recalc_detection_time (bm, bs);
- bfd_recalc_tx_interval (bm, bs);
- bfd_recalc_echo_tx_interval (bm, bs);
+ BFD_CLK_PRN (bs->effective_desired_min_tx_nsec));
+ bfd_recalc_detection_time (bs);
+ bfd_recalc_tx_interval (bs);
+ bfd_recalc_echo_tx_interval (bs);
bfd_calc_next_tx (bm, bs, now);
}
static void
-bfd_set_effective_required_min_rx (bfd_main_t * bm,
- bfd_session_t * bs,
- u64 required_min_rx_clocks)
+bfd_set_effective_required_min_rx (bfd_session_t *bs, u64 required_min_rx_nsec)
{
- bs->effective_required_min_rx_clocks = required_min_rx_clocks;
+ bs->effective_required_min_rx_nsec = required_min_rx_nsec;
BFD_DBG ("Set effective required min rx to " BFD_CLK_FMT,
- BFD_CLK_PRN (bs->effective_required_min_rx_clocks));
- bfd_recalc_detection_time (bm, bs);
+ BFD_CLK_PRN (bs->effective_required_min_rx_nsec));
+ bfd_recalc_detection_time (bs);
}
static void
-bfd_set_remote_required_min_rx (bfd_main_t * bm, bfd_session_t * bs,
- u64 now, u32 remote_required_min_rx_usec)
+bfd_set_remote_required_min_rx (bfd_session_t *bs,
+ u32 remote_required_min_rx_usec)
{
if (bs->remote_min_rx_usec != remote_required_min_rx_usec)
{
bs->remote_min_rx_usec = remote_required_min_rx_usec;
- bs->remote_min_rx_clocks =
- bfd_usec_to_clocks (bm, remote_required_min_rx_usec);
+ bs->remote_min_rx_nsec = bfd_usec_to_nsec (remote_required_min_rx_usec);
BFD_DBG ("Set remote min rx to " BFD_CLK_FMT,
- BFD_CLK_PRN (bs->remote_min_rx_clocks));
- bfd_recalc_detection_time (bm, bs);
- bfd_recalc_tx_interval (bm, bs);
+ BFD_CLK_PRN (bs->remote_min_rx_nsec));
+ bfd_recalc_detection_time (bs);
+ bfd_recalc_tx_interval (bs);
}
}
static void
-bfd_set_remote_required_min_echo_rx (bfd_main_t * bm, bfd_session_t * bs,
- u64 now,
+bfd_set_remote_required_min_echo_rx (bfd_session_t *bs,
u32 remote_required_min_echo_rx_usec)
{
if (bs->remote_min_echo_rx_usec != remote_required_min_echo_rx_usec)
{
bs->remote_min_echo_rx_usec = remote_required_min_echo_rx_usec;
- bs->remote_min_echo_rx_clocks =
- bfd_usec_to_clocks (bm, bs->remote_min_echo_rx_usec);
+ bs->remote_min_echo_rx_nsec =
+ bfd_usec_to_nsec (bs->remote_min_echo_rx_usec);
BFD_DBG ("Set remote min echo rx to " BFD_CLK_FMT,
- BFD_CLK_PRN (bs->remote_min_echo_rx_clocks));
- bfd_recalc_echo_tx_interval (bm, bs);
+ BFD_CLK_PRN (bs->remote_min_echo_rx_nsec));
+ bfd_recalc_echo_tx_interval (bs);
}
}
BFD_DBG ("\nStarting session: %U", format_bfd_session, bs);
vlib_log_info (bm->log_class, "start BFD session: %U",
format_bfd_session_brief, bs);
- bfd_set_effective_required_min_rx (bm, bs,
- bs->config_required_min_rx_clocks);
- bfd_recalc_tx_interval (bm, bs);
+ bfd_set_effective_required_min_rx (bs, bs->config_required_min_rx_nsec);
+ bfd_recalc_tx_interval (bs);
vlib_process_signal_event (bm->vlib_main, bm->bfd_process_node_index,
BFD_EVENT_NEW_SESSION, bs->bs_idx);
bfd_notify_listeners (bm, BFD_LISTEN_EVENT_CREATE, bs);
}
void
-bfd_session_set_flags (bfd_session_t * bs, u8 admin_up_down)
+bfd_session_set_flags (vlib_main_t * vm, bfd_session_t * bs, u8 admin_up_down)
{
bfd_main_t *bm = &bfd_main;
- u64 now = clib_cpu_time_now ();
+ u64 now = bfd_time_now_nsec (vm, NULL);
if (admin_up_down)
{
BFD_DBG ("Session set admin-up, bs-idx=%u", bs->bs_idx);
vlib_log_info (bm->log_class, "set session admin-up: %U",
format_bfd_session_brief, bs);
- bfd_set_state (bm, bs, BFD_STATE_down, 0);
+ bfd_set_state (vm, bm, bs, BFD_STATE_down, 0);
bfd_set_diag (bs, BFD_DIAG_CODE_no_diag);
bfd_calc_next_tx (bm, bs, now);
bfd_set_timer (bm, bs, now, 0);
vlib_log_info (bm->log_class, "set session admin-down: %U",
format_bfd_session_brief, bs);
bfd_set_diag (bs, BFD_DIAG_CODE_admin_down);
- bfd_set_state (bm, bs, BFD_STATE_admin_down, 0);
+ bfd_set_state (vm, bm, bs, BFD_STATE_admin_down, 0);
bfd_calc_next_tx (bm, bs, now);
bfd_set_timer (bm, bs, now, 0);
}
bs->echo = 0;
bfd_set_effective_desired_min_tx (bm, bs, now,
clib_max
- (bs->config_desired_min_tx_clocks,
- bm->default_desired_min_tx_clocks));
- bfd_set_effective_required_min_rx (bm, bs,
- bs->config_required_min_rx_clocks);
+ (bs->config_desired_min_tx_nsec,
+ bm->default_desired_min_tx_nsec));
+ bfd_set_effective_required_min_rx (bs, bs->config_required_min_rx_nsec);
bfd_set_timer (bm, bs, now, handling_wakeup);
break;
case BFD_STATE_down:
bs->echo = 0;
bfd_set_effective_desired_min_tx (bm, bs, now,
clib_max
- (bs->config_desired_min_tx_clocks,
- bm->default_desired_min_tx_clocks));
- bfd_set_effective_required_min_rx (bm, bs,
- bs->config_required_min_rx_clocks);
+ (bs->config_desired_min_tx_nsec,
+ bm->default_desired_min_tx_nsec));
+ bfd_set_effective_required_min_rx (bs, bs->config_required_min_rx_nsec);
bfd_set_timer (bm, bs, now, handling_wakeup);
break;
case BFD_STATE_init:
bs->echo = 0;
bfd_set_effective_desired_min_tx (bm, bs, now,
- bs->config_desired_min_tx_clocks);
+ bs->config_desired_min_tx_nsec);
bfd_set_timer (bm, bs, now, handling_wakeup);
break;
case BFD_STATE_up:
bfd_set_effective_desired_min_tx (bm, bs, now,
- bs->config_desired_min_tx_clocks);
+ bs->config_desired_min_tx_nsec);
if (BFD_POLL_NOT_NEEDED == bs->poll_state)
{
- bfd_set_effective_required_min_rx (bm, bs,
- bs->config_required_min_rx_clocks);
+ bfd_set_effective_required_min_rx (bs,
+ bs->config_required_min_rx_nsec);
}
bfd_set_timer (bm, bs, now, handling_wakeup);
break;
}
static void
-bfd_on_config_change (vlib_main_t * vm, vlib_node_runtime_t * rt,
- bfd_main_t * bm, bfd_session_t * bs, u64 now)
+bfd_on_config_change (bfd_main_t *bm, bfd_session_t *bs, u64 now)
{
/*
* if remote demand mode is set and we need to do a poll, set the next
* timeout so that the session wakes up immediately
*/
if (bs->remote_demand && BFD_POLL_NEEDED == bs->poll_state &&
- bs->poll_state_start_or_timeout_clocks < now)
+ bs->poll_state_start_or_timeout_nsec < now)
{
- bs->tx_timeout_clocks = now;
+ bs->tx_timeout_nsec = now;
}
- bfd_recalc_detection_time (bm, bs);
+ bfd_recalc_detection_time (bs);
bfd_set_timer (bm, bs, now, 0);
}
return 0;
}
-#if WITH_LIBSSL > 0
static void
-bfd_add_sha1_auth_section (vlib_buffer_t * b, bfd_session_t * bs)
+bfd_add_sha1_auth_section (vlib_main_t *vm, vlib_buffer_t *b,
+ bfd_session_t *bs)
{
bfd_pkt_with_sha1_auth_t *pkt = vlib_buffer_get_current (b);
bfd_auth_sha1_t *auth = &pkt->sha1_auth;
clib_memcpy (auth->hash, bs->auth.curr_key->key,
sizeof (bs->auth.curr_key->key));
unsigned char hash[sizeof (auth->hash)];
- SHA1 ((unsigned char *) pkt, sizeof (*pkt), hash);
+
+ vnet_crypto_op_t op;
+ vnet_crypto_op_init (&op, VNET_CRYPTO_OP_SHA1_HASH);
+ op.src = (u8 *) pkt;
+ op.len = sizeof (*pkt);
+ op.digest = hash;
+ vnet_crypto_process_ops (vm, &op, 1);
BFD_DBG ("hashing: %U", format_hex_bytes, pkt, sizeof (*pkt));
clib_memcpy (auth->hash, hash, sizeof (hash));
}
-#endif
static void
-bfd_add_auth_section (vlib_buffer_t * b, bfd_session_t * bs)
+bfd_add_auth_section (vlib_main_t *vm, vlib_buffer_t *b, bfd_session_t *bs)
{
bfd_main_t *bm = &bfd_main;
if (bs->auth.curr_key)
"internal error, unexpected BFD auth type '%d'",
auth_type);
break;
-#if WITH_LIBSSL > 0
case BFD_AUTH_TYPE_keyed_sha1:
/* fallthrough */
case BFD_AUTH_TYPE_meticulous_keyed_sha1:
- bfd_add_sha1_auth_section (b, bs);
+ bfd_add_sha1_auth_section (vm, b, bs);
break;
-#else
- case BFD_AUTH_TYPE_keyed_sha1:
- /* fallthrough */
- case BFD_AUTH_TYPE_meticulous_keyed_sha1:
- vlib_log_crit (bm->log_class,
- "internal error, unexpected BFD auth type '%d'",
- auth_type);
- break;
-#endif
}
}
}
}
static void
-bfd_init_control_frame (bfd_main_t * bm, bfd_session_t * bs,
- vlib_buffer_t * b)
+bfd_init_control_frame (bfd_session_t *bs, vlib_buffer_t *b)
{
bfd_pkt_t *pkt = vlib_buffer_get_current (b);
u32 bfd_length = 0;
if (bs->echo)
{
pkt->req_min_rx =
- clib_host_to_net_u32 (bfd_clocks_to_usec
- (bm, bs->effective_required_min_rx_clocks));
+ clib_host_to_net_u32 (bfd_nsec_to_usec
+ (bs->effective_required_min_rx_nsec));
}
else
{
}
static void
-bfd_send_echo (vlib_main_t * vm, vlib_node_runtime_t * rt,
- bfd_main_t * bm, bfd_session_t * bs, u64 now)
+bfd_send_echo (vlib_main_t *vm, bfd_main_t *bm, bfd_session_t *bs, u64 now)
{
if (!bfd_is_echo_possible (bs))
{
bs->echo = 0;
return;
}
- /* 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)
+ if (now >= bs->echo_tx_timeout_nsec)
{
BFD_DBG ("\nSending echo packet: %U", format_bfd_session, bs);
u32 bi;
}
vlib_buffer_t *b = vlib_get_buffer (vm, bi);
ASSERT (b->current_data == 0);
- clib_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);
clib_memset (pkt, 0, sizeof (*pkt));
pkt->discriminator = bs->local_discr;
- pkt->expire_time_clocks =
- now + bs->echo_transmit_interval_clocks * bs->local_detect_mult;
+ pkt->expire_time_nsec =
+ now + bs->echo_transmit_interval_nsec * bs->local_detect_mult;
pkt->checksum =
- bfd_calc_echo_checksum (bs->local_discr, pkt->expire_time_clocks,
+ bfd_calc_echo_checksum (bs->local_discr, pkt->expire_time_nsec,
bs->echo_secret);
b->current_length = sizeof (*pkt);
if (!bfd_echo_add_transport_layer (vm, bi, bs))
vlib_buffer_free_one (vm, bi);
return;
}
- bs->echo_last_tx_clocks = now;
- bfd_calc_next_echo_tx (bm, bs, now);
+ bs->echo_last_tx_nsec = now;
+ bfd_calc_next_echo_tx (bs, now);
}
else
{
BFD_DBG
("No need to send echo packet now, now is %lu, tx_timeout is %lu",
- now, bs->echo_tx_timeout_clocks);
+ now, bs->echo_tx_timeout_nsec);
}
}
static void
-bfd_send_periodic (vlib_main_t * vm, vlib_node_runtime_t * rt,
- bfd_main_t * bm, bfd_session_t * bs, u64 now)
+bfd_send_periodic (vlib_main_t *vm, bfd_main_t *bm, bfd_session_t *bs, u64 now)
{
if (!bs->remote_min_rx_usec && BFD_POLL_NOT_NEEDED == bs->poll_state)
{
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
- */
- if (now + bm->wheel_inaccuracy >= bs->tx_timeout_clocks)
+ if (now >= bs->tx_timeout_nsec)
{
BFD_DBG ("\nSending periodic control frame: %U", format_bfd_session,
bs);
}
vlib_buffer_t *b = vlib_get_buffer (vm, bi);
ASSERT (b->current_data == 0);
- clib_memset (vnet_buffer (b), 0, sizeof (*vnet_buffer (b)));
- VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b);
- bfd_init_control_frame (bm, bs, b);
+ bfd_init_control_frame (bs, b);
switch (bs->poll_state)
{
case BFD_POLL_NEEDED:
- if (now < bs->poll_state_start_or_timeout_clocks)
+ if (now < bs->poll_state_start_or_timeout_nsec)
{
- BFD_DBG ("Cannot start a poll sequence yet, need to wait "
- "for " BFD_CLK_FMT,
- BFD_CLK_PRN (bs->poll_state_start_or_timeout_clocks -
+ BFD_DBG ("Cannot start a poll sequence yet, need to wait for "
+ BFD_CLK_FMT,
+ BFD_CLK_PRN (bs->poll_state_start_or_timeout_nsec -
now));
break;
}
- bs->poll_state_start_or_timeout_clocks = now;
+ bs->poll_state_start_or_timeout_nsec = now;
bfd_set_poll_state (bs, BFD_POLL_IN_PROGRESS);
/* fallthrough */
case BFD_POLL_IN_PROGRESS:
/* fallthrough */
break;
}
- bfd_add_auth_section (b, bs);
+ bfd_add_auth_section (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;
+ bs->last_tx_nsec = now;
bfd_calc_next_tx (bm, bs, now);
}
else
{
BFD_DBG
("No need to send control frame now, now is %lu, tx_timeout is %lu",
- now, bs->tx_timeout_clocks);
+ now, bs->tx_timeout_nsec);
}
}
void
-bfd_init_final_control_frame (vlib_main_t * vm, vlib_buffer_t * b,
- bfd_main_t * bm, bfd_session_t * bs,
- int is_local)
+bfd_init_final_control_frame (vlib_main_t *vm, vlib_buffer_t *b,
+ bfd_session_t *bs)
{
BFD_DBG ("Send final control frame for bs_idx=%lu", bs->bs_idx);
- bfd_init_control_frame (bm, bs, b);
+ bfd_init_control_frame (bs, b);
bfd_pkt_set_final (vlib_buffer_get_current (b));
- bfd_add_auth_section (b, bs);
+ bfd_add_auth_section (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 ();
+ bs->last_tx_nsec = bfd_time_now_nsec (vm, NULL);
/*
* RFC allows to include changes in final frame, so if there were any
* pending, we already did that, thus we can clear any pending poll needs
}
static void
-bfd_check_rx_timeout (bfd_main_t * bm, bfd_session_t * bs, u64 now,
- int handling_wakeup)
+bfd_check_rx_timeout (vlib_main_t * vm, 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
- */
- if (bs->last_rx_clocks + bs->detection_time_clocks <=
- now + bm->wheel_inaccuracy)
+ if (bs->last_rx_nsec + bs->detection_time_nsec <= now)
{
BFD_DBG ("Rx timeout, session goes down");
+ /*
+ * RFC 5880 6.8.1. State Variables
+
+ * bfd.RemoteDiscr
+
+ * The remote discriminator for this BFD session. This is the
+ * discriminator chosen by the remote system, and is totally opaque
+ * to the local system. This MUST be initialized to zero. If a
+ * period of a Detection Time passes without the receipt of a valid,
+ * authenticated BFD packet from the remote system, this variable
+ * MUST be set to zero.
+ */
+ bs->remote_discr = 0;
bfd_set_diag (bs, BFD_DIAG_CODE_det_time_exp);
- bfd_set_state (bm, bs, BFD_STATE_down, handling_wakeup);
+ bfd_set_state (vm, bm, bs, BFD_STATE_down, handling_wakeup);
/*
* If the remote system does not receive any
* BFD Control packets for a Detection Time, it SHOULD reset
* since it is no longer required to maintain previous session state)
* and then can transmit at its own rate.
*/
- bfd_set_remote_required_min_rx (bm, bs, now, 1);
+ bfd_set_remote_required_min_rx (bs, 1);
}
- else if (bs->echo &&
- bs->echo_last_rx_clocks +
- bs->echo_transmit_interval_clocks * bs->local_detect_mult <=
- now + bm->wheel_inaccuracy)
+ else if (bs->echo
+ && bs->echo_last_rx_nsec +
+ bs->echo_transmit_interval_nsec * bs->local_detect_mult <= now)
{
BFD_DBG ("Echo rx timeout, session goes down");
bfd_set_diag (bs, BFD_DIAG_CODE_echo_failed);
- bfd_set_state (bm, bs, BFD_STATE_down, handling_wakeup);
+ bfd_set_state (vm, bm, bs, BFD_STATE_down, handling_wakeup);
}
}
void
-bfd_on_timeout (vlib_main_t * vm, vlib_node_runtime_t * rt, bfd_main_t * bm,
- bfd_session_t * bs, u64 now)
+bfd_on_timeout (vlib_main_t *vm, bfd_main_t *bm, bfd_session_t *bs, u64 now)
{
BFD_DBG ("Timeout for bs_idx=%lu", bs->bs_idx);
switch (bs->local_state)
{
case BFD_STATE_admin_down:
- bfd_send_periodic (vm, rt, bm, bs, now);
- break;
+ /* fallthrough */
case BFD_STATE_down:
- bfd_send_periodic (vm, rt, bm, bs, now);
+ bfd_send_periodic (vm, bm, bs, now);
break;
case BFD_STATE_init:
- bfd_check_rx_timeout (bm, bs, now, 1);
- bfd_send_periodic (vm, rt, bm, bs, now);
+ bfd_check_rx_timeout (vm, bm, bs, now, 1);
+ bfd_send_periodic (vm, bm, bs, now);
break;
case BFD_STATE_up:
- bfd_check_rx_timeout (bm, bs, now, 1);
+ bfd_check_rx_timeout (vm, bm, bs, now, 1);
if (BFD_POLL_NOT_NEEDED == bs->poll_state && !bs->echo &&
bfd_is_echo_possible (bs))
{
/* switch on echo function as main detection method now */
BFD_DBG ("Switching on echo function, bs_idx=%u", bs->bs_idx);
bs->echo = 1;
- bs->echo_last_rx_clocks = now;
- bs->echo_tx_timeout_clocks = now;
- bfd_set_effective_required_min_rx (bm, bs,
- clib_max
- (bm->min_required_min_rx_while_echo_clocks,
- bs->config_required_min_rx_clocks));
+ bs->echo_last_rx_nsec = now;
+ bs->echo_tx_timeout_nsec = now;
+ bfd_set_effective_required_min_rx (
+ bs, clib_max (bm->min_required_min_rx_while_echo_nsec,
+ bs->config_required_min_rx_nsec));
bfd_set_poll_state (bs, BFD_POLL_NEEDED);
}
- bfd_send_periodic (vm, rt, bm, bs, now);
+ bfd_send_periodic (vm, bm, bs, now);
if (bs->echo)
{
- bfd_send_echo (vm, rt, bm, bs, now);
+ bfd_send_echo (vm, bm, bs, now);
}
break;
}
* bfd process node function
*/
static uword
-bfd_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
+bfd_process (vlib_main_t *vm, CLIB_UNUSED (vlib_node_runtime_t *rt),
+ CLIB_UNUSED (vlib_frame_t *f))
{
bfd_main_t *bm = &bfd_main;
u32 *expired = 0;
while (1)
{
- u64 now = clib_cpu_time_now ();
+ f64 vm_time;
+ u64 now = bfd_time_now_nsec (vm, &vm_time);
+ BFD_DBG ("wakeup, now is %llunsec, vlib_time_now() is %.9f", now,
+ vm_time);
bfd_lock (bm);
- u64 next_expire = timing_wheel_next_expiring_elt_time (&bm->wheel);
- BFD_DBG ("timing_wheel_next_expiring_elt_time(%p) returns %lu",
- &bm->wheel, next_expire);
- bm->bfd_process_next_wakeup_clocks =
- (i64) next_expire >= 0 ? next_expire : ~0;
- bfd_unlock (bm);
- if ((i64) next_expire < 0)
+ f64 timeout;
+ if (pool_elts (bm->sessions))
{
- BFD_DBG ("wait for event without timeout");
- (void) vlib_process_wait_for_event (vm);
- event_type = vlib_process_get_events (vm, &event_data);
- }
- else
- {
- f64 timeout = ((i64) next_expire - (i64) now) / bm->cpu_cps;
- BFD_DBG ("wait for event with timeout %.02f", timeout);
- if (timeout < 0)
+ u32 first_expires_in_ticks =
+ TW (tw_timer_first_expires_in_ticks) (&bm->wheel);
+ if (!first_expires_in_ticks)
{
- BFD_DBG ("negative timeout, already expired, skipping wait");
- event_type = ~0;
+ BFD_DBG
+ ("tw_timer_first_expires_in_ticks(%p) returns 0ticks",
+ &bm->wheel);
+ timeout = bm->wheel.next_run_time - vm_time;
+ BFD_DBG ("wheel.next_run_time is %.9f",
+ bm->wheel.next_run_time);
+ u64 next_expire_nsec = now + timeout * SEC_PER_NSEC;
+ bm->bfd_process_next_wakeup_nsec = next_expire_nsec;
+ bfd_unlock (bm);
}
else
{
- (void) vlib_process_wait_for_event_or_clock (vm, timeout);
- event_type = vlib_process_get_events (vm, &event_data);
+ BFD_DBG ("tw_timer_first_expires_in_ticks(%p) returns %luticks",
+ &bm->wheel, first_expires_in_ticks);
+ u64 next_expire_nsec =
+ now + first_expires_in_ticks * bm->nsec_per_tw_tick;
+ bm->bfd_process_next_wakeup_nsec = next_expire_nsec;
+ bfd_unlock (bm);
+ ASSERT (next_expire_nsec - now <= UINT32_MAX);
+ // cast to u32 to avoid warning
+ timeout = (u32) (next_expire_nsec - now) * SEC_PER_NSEC;
}
+ BFD_DBG ("vlib_process_wait_for_event_or_clock(vm, %.09f)",
+ timeout);
+ (void) vlib_process_wait_for_event_or_clock (vm, timeout);
}
- now = clib_cpu_time_now ();
+ else
+ {
+ bfd_unlock (bm);
+ (void) vlib_process_wait_for_event (vm);
+ }
+ event_type = vlib_process_get_events (vm, &event_data);
+ now = bfd_time_now_nsec (vm, &vm_time);
uword *session_index;
switch (event_type)
{
/* nothing to do here */
break;
case BFD_EVENT_RESCHEDULE:
+ BFD_DBG ("reschedule event");
bfd_lock (bm);
- bm->bfd_process_wakeup_event_delay_clocks =
- now - bm->bfd_process_wakeup_event_start_clocks;
+ bm->bfd_process_wakeup_event_delay_nsec =
+ now - bm->bfd_process_wakeup_event_start_nsec;
bm->bfd_process_wakeup_events_in_flight--;
bfd_unlock (bm);
/* nothing to do here - reschedule is done automatically after
{
bfd_session_t *bs =
pool_elt_at_index (bm->sessions, *session_index);
- bfd_send_periodic (vm, rt, bm, bs, now);
+ bfd_send_periodic (vm, bm, bs, now);
bfd_set_timer (bm, bs, now, 1);
}
else
{
bfd_session_t *bs =
pool_elt_at_index (bm->sessions, *session_index);
- bfd_on_config_change (vm, rt, bm, bs, now);
+ bfd_on_config_change (bm, bs, now);
}
else
{
vlib_log_err (bm->log_class, "BUG: event type 0x%wx", event_type);
break;
}
- BFD_DBG ("advancing wheel, now is %lu", now);
- BFD_DBG ("timing_wheel_advance (%p, %lu, %p, 0);", &bm->wheel, now,
- expired);
+ BFD_DBG ("tw_timer_expire_timers_vec(%p, %.04f);", &bm->wheel, vm_time);
bfd_lock (bm);
- expired = timing_wheel_advance (&bm->wheel, now, expired, 0);
+ expired =
+ TW (tw_timer_expire_timers_vec) (&bm->wheel, vm_time, expired);
BFD_DBG ("Expired %d elements", vec_len (expired));
u32 *p = NULL;
vec_foreach (p, expired)
if (!pool_is_free_index (bm->sessions, bs_idx))
{
bfd_session_t *bs = pool_elt_at_index (bm->sessions, bs_idx);
- bfd_on_timeout (vm, rt, bm, bs, now);
+ bs->tw_id = 0; /* timer is gone because it expired */
+ bfd_on_timeout (vm, bm, bs, now);
bfd_set_timer (bm, bs, now, 1);
}
}
/*
* bfd process node declaration
*/
-/* *INDENT-OFF* */
VLIB_REGISTER_NODE (bfd_process_node, static) = {
.function = bfd_process,
.type = VLIB_NODE_TYPE_PROCESS,
.n_next_nodes = 0,
.next_nodes = {},
};
-/* *INDENT-ON* */
static clib_error_t *
-bfd_sw_interface_up_down (vnet_main_t * vnm, u32 sw_if_index, u32 flags)
+bfd_sw_interface_up_down (CLIB_UNUSED (vnet_main_t *vnm),
+ CLIB_UNUSED (u32 sw_if_index), u32 flags)
{
// bfd_main_t *bm = &bfd_main;
// vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (bfd_sw_interface_up_down);
static clib_error_t *
-bfd_hw_interface_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
+bfd_hw_interface_up_down (CLIB_UNUSED (vnet_main_t *vnm),
+ CLIB_UNUSED (u32 hw_if_index), u32 flags)
{
// bfd_main_t *bm = &bfd_main;
if (flags & VNET_HW_INTERFACE_FLAG_LINK_UP)
bm->vlib_main = vm;
bm->vnet_main = vnet_get_main ();
clib_memset (&bm->wheel, 0, sizeof (bm->wheel));
- bm->cpu_cps = vm->clib_time.clocks_per_second;
- BFD_DBG ("cps is %.2f", bm->cpu_cps);
- bm->default_desired_min_tx_clocks =
- bfd_usec_to_clocks (bm, BFD_DEFAULT_DESIRED_MIN_TX_USEC);
- bm->min_required_min_rx_while_echo_clocks =
- bfd_usec_to_clocks (bm, BFD_REQUIRED_MIN_RX_USEC_WHILE_ECHO);
- 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;
+ bm->nsec_per_tw_tick = (f64) NSEC_PER_SEC / BFD_TW_TPS;
+ bm->default_desired_min_tx_nsec =
+ bfd_usec_to_nsec (BFD_DEFAULT_DESIRED_MIN_TX_USEC);
+ bm->min_required_min_rx_while_echo_nsec =
+ bfd_usec_to_nsec (BFD_REQUIRED_MIN_RX_USEC_WHILE_ECHO);
+ BFD_DBG ("tw_timer_wheel_init(%p, %p, %.04f, %u)", &bm->wheel, NULL,
+ 1.00 / BFD_TW_TPS, ~0);
+ TW (tw_timer_wheel_init) (&bm->wheel, NULL, 1.00 / BFD_TW_TPS, ~0);
bm->log_class = vlib_log_register_class ("bfd", 0);
vlib_log_debug (bm->log_class, "initialized");
bm->owner_thread_index = ~0;
}
static int
-bfd_verify_pkt_auth_seq_num (bfd_session_t * bs,
+bfd_verify_pkt_auth_seq_num (vlib_main_t * vm, bfd_session_t * bs,
u32 received_seq_num, int is_meticulous)
{
/*
* This variable MUST be set to zero after no packets have been
* received on this session for at least twice the Detection Time.
*/
- u64 now = clib_cpu_time_now ();
- if (now - bs->last_rx_clocks > bs->detection_time_clocks * 2)
+ u64 now = bfd_time_now_nsec (vm, NULL);
+ if (now - bs->last_rx_nsec > bs->detection_time_nsec * 2)
{
- BFD_DBG ("BFD peer unresponsive for %lu clocks, which is > 2 * "
- "detection_time=%u clocks, resetting remote_seq_number_known "
- "flag",
- now - bs->last_rx_clocks, bs->detection_time_clocks * 2);
+ BFD_DBG ("BFD peer unresponsive for %lu nsec, which is > 2 * "
+ "detection_time=%u nsec, resetting remote_seq_number_known "
+ "flag", now - bs->last_rx_nsec, bs->detection_time_nsec * 2);
bs->auth.remote_seq_number_known = 0;
}
if (bs->auth.remote_seq_number_known)
}
static int
-bfd_verify_pkt_auth_key_sha1 (const bfd_pkt_t * pkt, u32 pkt_size,
- bfd_session_t * bs, u8 bfd_key_id,
- bfd_auth_key_t * auth_key)
+bfd_verify_pkt_auth_key_sha1 (vlib_main_t *vm, const bfd_pkt_t *pkt,
+ u32 pkt_size, CLIB_UNUSED (bfd_session_t *bs),
+ u8 bfd_key_id, bfd_auth_key_t *auth_key)
{
ASSERT (auth_key->auth_type == BFD_AUTH_TYPE_keyed_sha1 ||
auth_key->auth_type == BFD_AUTH_TYPE_meticulous_keyed_sha1);
- u8 result[SHA_DIGEST_LENGTH];
bfd_pkt_with_common_auth_t *with_common = (void *) pkt;
if (pkt_size < sizeof (*with_common))
{
auth.is_delayed ? " (but a delayed auth change is scheduled)" : "");
return 0;
}
- SHA_CTX ctx;
- if (!SHA1_Init (&ctx))
- {
- BFD_ERR ("SHA1_Init failed");
- return 0;
- }
- /* ignore last 20 bytes - use the actual key data instead pkt data */
- if (!SHA1_Update (&ctx, with_sha1,
- sizeof (*with_sha1) - sizeof (with_sha1->sha1_auth.hash)))
- {
- BFD_ERR ("SHA1_Update failed");
- return 0;
- }
- if (!SHA1_Update (&ctx, auth_key->key, sizeof (auth_key->key)))
- {
- BFD_ERR ("SHA1_Update failed");
- return 0;
- }
- if (!SHA1_Final (result, &ctx))
- {
- BFD_ERR ("SHA1_Final failed");
- return 0;
- }
- if (0 == memcmp (result, with_sha1->sha1_auth.hash, SHA_DIGEST_LENGTH))
- {
+
+ u8 hash_from_packet[STRUCT_SIZE_OF (bfd_auth_sha1_t, hash)];
+ u8 calculated_hash[STRUCT_SIZE_OF (bfd_auth_sha1_t, hash)];
+ clib_memcpy (hash_from_packet, with_sha1->sha1_auth.hash,
+ sizeof (with_sha1->sha1_auth.hash));
+ clib_memcpy (with_sha1->sha1_auth.hash, auth_key->key,
+ sizeof (auth_key->key));
+ vnet_crypto_op_t op;
+ vnet_crypto_op_init (&op, VNET_CRYPTO_OP_SHA1_HASH);
+ op.src = (u8 *) with_sha1;
+ op.len = sizeof (*with_sha1);
+ op.digest = calculated_hash;
+ vnet_crypto_process_ops (vm, &op, 1);
+
+ /* Restore the modified data within the packet */
+ clib_memcpy (with_sha1->sha1_auth.hash, hash_from_packet,
+ sizeof (with_sha1->sha1_auth.hash));
+
+ if (0 ==
+ memcmp (calculated_hash, hash_from_packet, sizeof (calculated_hash)))
+ {
+ clib_memcpy (with_sha1->sha1_auth.hash, hash_from_packet,
+ sizeof (hash_from_packet));
return 1;
}
BFD_ERR ("SHA1 hash: %U doesn't match the expected value: %U",
- format_hex_bytes, with_sha1->sha1_auth.hash, SHA_DIGEST_LENGTH,
- format_hex_bytes, result, SHA_DIGEST_LENGTH);
+ format_hex_bytes, hash_from_packet, sizeof (hash_from_packet),
+ format_hex_bytes, calculated_hash, sizeof (calculated_hash));
return 0;
}
static int
-bfd_verify_pkt_auth_key (const bfd_pkt_t * pkt, u32 pkt_size,
- bfd_session_t * bs, u8 bfd_key_id,
+bfd_verify_pkt_auth_key (vlib_main_t * vm, const bfd_pkt_t * pkt,
+ u32 pkt_size, bfd_session_t * bs, u8 bfd_key_id,
bfd_auth_key_t * auth_key)
{
bfd_main_t *bm = &bfd_main;
bfd_auth_type_str (auth_key->auth_type));
return 0;
case BFD_AUTH_TYPE_simple_password:
- vlib_log_err (bm->log_class,
- "internal error, not implemented, unexpected auth_type=%d:%s",
- auth_key->auth_type,
- bfd_auth_type_str (auth_key->auth_type));
- return 0;
+ /* fallthrough */
case BFD_AUTH_TYPE_keyed_md5:
/* fallthrough */
case BFD_AUTH_TYPE_meticulous_keyed_md5:
- vlib_log_err
- (bm->log_class,
- "internal error, not implemented, unexpected auth_type=%d:%s",
- auth_key->auth_type, bfd_auth_type_str (auth_key->auth_type));
+ vlib_log_err (
+ bm->log_class,
+ "internal error, not implemented, unexpected auth_type=%d:%s",
+ auth_key->auth_type, bfd_auth_type_str (auth_key->auth_type));
return 0;
case BFD_AUTH_TYPE_keyed_sha1:
/* fallthrough */
case BFD_AUTH_TYPE_meticulous_keyed_sha1:
-#if WITH_LIBSSL > 0
do
{
const u32 seq_num = clib_net_to_host_u32 (((bfd_pkt_with_sha1_auth_t
*) pkt)->
sha1_auth.seq_num);
- return bfd_verify_pkt_auth_seq_num (bs, seq_num,
- bfd_auth_type_is_meticulous
- (auth_key->auth_type))
- && bfd_verify_pkt_auth_key_sha1 (pkt, pkt_size, bs, bfd_key_id,
- auth_key);
+ return bfd_verify_pkt_auth_seq_num (
+ vm, bs, seq_num,
+ bfd_auth_type_is_meticulous (auth_key->auth_type)) &&
+ bfd_verify_pkt_auth_key_sha1 (vm, pkt, pkt_size, bs,
+ bfd_key_id, auth_key);
}
while (0);
-#else
- vlib_log_err
- (bm->log_class,
- "internal error, attempt to use SHA1 without SSL support");
- return 0;
-#endif
}
return 0;
}
* @return 1 if bfd packet is valid
*/
int
-bfd_verify_pkt_auth (const bfd_pkt_t * pkt, u16 pkt_size, bfd_session_t * bs)
+bfd_verify_pkt_auth (vlib_main_t * vm, const bfd_pkt_t * pkt, u16 pkt_size,
+ bfd_session_t * bs)
{
if (bfd_pkt_get_auth_present (pkt))
{
if (bs->auth.is_delayed && bs->auth.next_key)
{
/* yes, switch is scheduled - make sure the auth is valid */
- if (bfd_verify_pkt_auth_key (pkt, pkt_size, bs,
+ if (bfd_verify_pkt_auth_key (vm, pkt, pkt_size, bs,
bs->auth.next_bfd_key_id,
bs->auth.next_key))
{
else
{
/* yes, using authentication, verify the key */
- if (bfd_verify_pkt_auth_key (pkt, pkt_size, bs,
+ if (bfd_verify_pkt_auth_key (vm, pkt, pkt_size, bs,
bs->auth.curr_bfd_key_id,
bs->auth.curr_key))
{
if (bs->auth.is_delayed && bs->auth.next_key)
{
/* delayed switch present, verify if that key works */
- if (bfd_verify_pkt_auth_key (pkt, pkt_size, bs,
+ if (bfd_verify_pkt_auth_key (vm, pkt, pkt_size, bs,
bs->auth.next_bfd_key_id,
bs->auth.next_key))
{
}
void
-bfd_consume_pkt (bfd_main_t * bm, const bfd_pkt_t * pkt, u32 bs_idx)
+bfd_consume_pkt (vlib_main_t * vm, bfd_main_t * bm, const bfd_pkt_t * pkt,
+ u32 bs_idx)
{
bfd_lock_check (bm);
bs->remote_state = bfd_pkt_get_state (pkt);
bs->remote_demand = bfd_pkt_get_demand (pkt);
bs->remote_diag = bfd_pkt_get_diag_code (pkt);
- u64 now = clib_cpu_time_now ();
- bs->last_rx_clocks = now;
+ u64 now = bfd_time_now_nsec (vm, NULL);
+ bs->last_rx_nsec = now;
if (bfd_pkt_get_auth_present (pkt))
{
bfd_auth_type_e auth_type =
while (0);
}
}
- bs->remote_desired_min_tx_clocks =
- bfd_usec_to_clocks (bm, clib_net_to_host_u32 (pkt->des_min_tx));
+ bs->remote_desired_min_tx_nsec =
+ bfd_usec_to_nsec (clib_net_to_host_u32 (pkt->des_min_tx));
bs->remote_detect_mult = pkt->head.detect_mult;
- bfd_set_remote_required_min_rx (bm, bs, now,
- clib_net_to_host_u32 (pkt->req_min_rx));
- bfd_set_remote_required_min_echo_rx (bm, bs, now,
- clib_net_to_host_u32
- (pkt->req_min_echo_rx));
+ bfd_set_remote_required_min_rx (bs, clib_net_to_host_u32 (pkt->req_min_rx));
+ bfd_set_remote_required_min_echo_rx (
+ bs, clib_net_to_host_u32 (pkt->req_min_echo_rx));
if (bfd_pkt_get_final (pkt))
{
if (BFD_POLL_IN_PROGRESS == bs->poll_state)
bfd_set_poll_state (bs, BFD_POLL_NOT_NEEDED);
if (BFD_STATE_up == bs->local_state)
{
- bfd_set_effective_required_min_rx (bm, bs,
- clib_max (bs->echo *
- bm->min_required_min_rx_while_echo_clocks,
- bs->config_required_min_rx_clocks));
+ bfd_set_effective_desired_min_tx (
+ bm, bs, now, bs->config_desired_min_tx_nsec);
+ bfd_set_effective_required_min_rx (
+ bs,
+ clib_max (bs->echo * bm->min_required_min_rx_while_echo_nsec,
+ bs->config_required_min_rx_nsec));
}
}
else if (BFD_POLL_IN_PROGRESS_AND_QUEUED == bs->poll_state)
* time, so calculate that here
*/
BFD_DBG ("Next poll sequence can commence in " BFD_CLK_FMT,
- BFD_CLK_PRN (now -
- bs->poll_state_start_or_timeout_clocks));
- bs->poll_state_start_or_timeout_clocks =
- now + (now - bs->poll_state_start_or_timeout_clocks);
+ BFD_CLK_PRN (now - bs->poll_state_start_or_timeout_nsec));
+ bs->poll_state_start_or_timeout_nsec =
+ now + (now - bs->poll_state_start_or_timeout_nsec);
BFD_DBG
("Poll sequence terminated, but another is needed, bs_idx=%u",
bs->bs_idx);
if (BFD_STATE_admin_down == bs->remote_state)
{
bfd_set_diag (bs, BFD_DIAG_CODE_neighbor_sig_down);
- bfd_set_state (bm, bs, BFD_STATE_down, 0);
+ bfd_set_state (vm, bm, bs, BFD_STATE_down, 0);
}
else if (BFD_STATE_down == bs->local_state)
{
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);
+ bfd_set_state (vm, 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);
+ bfd_set_state (vm, bm, bs, BFD_STATE_up, 0);
}
}
else if (BFD_STATE_init == bs->local_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);
+ bfd_set_state (vm, bm, bs, BFD_STATE_up, 0);
}
}
else /* BFD_STATE_up == bs->local_state */
if (BFD_STATE_down == bs->remote_state)
{
bfd_set_diag (bs, BFD_DIAG_CODE_neighbor_sig_down);
- bfd_set_state (bm, bs, BFD_STATE_down, 0);
+ bfd_set_state (vm, bm, bs, BFD_STATE_down, 0);
}
}
}
int
-bfd_consume_echo_pkt (bfd_main_t * bm, vlib_buffer_t * b)
+bfd_consume_echo_pkt (vlib_main_t * vm, bfd_main_t * bm, vlib_buffer_t * b)
{
bfd_echo_pkt_t *pkt = NULL;
if (b->current_length != sizeof (*pkt))
}
BFD_DBG ("Scanning bfd echo packet, bs_idx=%d", bs->bs_idx);
u64 checksum =
- bfd_calc_echo_checksum (bs->local_discr, pkt->expire_time_clocks,
+ bfd_calc_echo_checksum (bs->local_discr, pkt->expire_time_nsec,
bs->echo_secret);
if (checksum != pkt->checksum)
{
BFD_DBG ("Invalid echo packet, checksum mismatch");
return 1;
}
- u64 now = clib_cpu_time_now ();
- if (pkt->expire_time_clocks < now)
+ u64 now = bfd_time_now_nsec (vm, NULL);
+ if (pkt->expire_time_nsec < now)
{
BFD_DBG ("Stale packet received, expire time %lu < now %lu",
- pkt->expire_time_clocks, now);
+ pkt->expire_time_nsec, now);
}
else
{
- bs->echo_last_rx_clocks = now;
+ bs->echo_last_rx_nsec = now;
}
return 1;
}
format_bfd_session (u8 * s, va_list * args)
{
const bfd_session_t *bs = va_arg (*args, bfd_session_t *);
- u32 indent = format_get_indent (s) + vlib_log_get_indent ();
s = format (s, "bs_idx=%u local-state=%s remote-state=%s\n"
- "%Ulocal-discriminator=%u remote-discriminator=%u\n"
- "%Ulocal-diag=%s echo-active=%s\n"
- "%Udesired-min-tx=%u required-min-rx=%u\n"
- "%Urequired-min-echo-rx=%u detect-mult=%u\n"
- "%Uremote-min-rx=%u remote-min-echo-rx=%u\n"
- "%Uremote-demand=%s poll-state=%s\n"
- "%Uauth: local-seq-num=%u remote-seq-num=%u\n"
- "%U is-delayed=%s\n"
- "%U curr-key=%U\n"
- "%U next-key=%U",
+ "local-discriminator=%u remote-discriminator=%u\n"
+ "local-diag=%s echo-active=%s\n"
+ "desired-min-tx=%u required-min-rx=%u\n"
+ "required-min-echo-rx=%u detect-mult=%u\n"
+ "remote-min-rx=%u remote-min-echo-rx=%u\n"
+ "remote-demand=%s poll-state=%s\n"
+ "auth: local-seq-num=%u remote-seq-num=%u\n"
+ " is-delayed=%s\n"
+ " curr-key=%U\n"
+ " next-key=%U",
bs->bs_idx, bfd_state_string (bs->local_state),
- bfd_state_string (bs->remote_state), format_white_space, indent,
- bs->local_discr, bs->remote_discr, format_white_space, indent,
- bfd_diag_code_string (bs->local_diag),
- (bs->echo ? "yes" : "no"), format_white_space, indent,
- bs->config_desired_min_tx_usec, bs->config_required_min_rx_usec,
- format_white_space, indent, 1, bs->local_detect_mult,
- format_white_space, indent, bs->remote_min_rx_usec,
- bs->remote_min_echo_rx_usec, format_white_space, indent,
+ bfd_state_string (bs->remote_state), bs->local_discr,
+ bs->remote_discr, bfd_diag_code_string (bs->local_diag),
+ (bs->echo ? "yes" : "no"), bs->config_desired_min_tx_usec,
+ bs->config_required_min_rx_usec, 1, bs->local_detect_mult,
+ bs->remote_min_rx_usec, bs->remote_min_echo_rx_usec,
(bs->remote_demand ? "yes" : "no"),
- bfd_poll_state_string (bs->poll_state), format_white_space,
- indent, bs->auth.local_seq_number, bs->auth.remote_seq_number,
- format_white_space, indent,
- (bs->auth.is_delayed ? "yes" : "no"), format_white_space,
- indent, format_bfd_auth_key, bs->auth.curr_key,
- format_white_space, indent, format_bfd_auth_key,
+ bfd_poll_state_string (bs->poll_state),
+ bs->auth.local_seq_number, bs->auth.remote_seq_number,
+ (bs->auth.is_delayed ? "yes" : "no"),
+ format_bfd_auth_key, bs->auth.curr_key, format_bfd_auth_key,
bs->auth.next_key);
return s;
}
bfd_auth_key_t *key = pool_elt_at_index (bm->auth_keys, key_idx);
if (is_delayed)
{
- if (bs->auth.next_key == key)
+ if (bs->auth.next_key == key && bs->auth.next_bfd_key_id == bfd_key_id)
{
/* already using this key, no changes required */
return 0;
}
- bs->auth.next_key = key;
+ if (bs->auth.next_key != key)
+ {
+ ++key->use_count;
+ bs->auth.next_key = key;
+ }
bs->auth.next_bfd_key_id = bfd_key_id;
bs->auth.is_delayed = 1;
}
else
{
- if (bs->auth.curr_key == key)
+ if (bs->auth.curr_key == key && bs->auth.curr_bfd_key_id == bfd_key_id)
{
/* already using this key, no changes required */
return 0;
}
+ ++key->use_count;
if (bs->auth.curr_key)
{
--bs->auth.curr_key->use_count;
bs->auth.curr_bfd_key_id = bfd_key_id;
bs->auth.is_delayed = 0;
}
- ++key->use_count;
BFD_DBG ("\nSession auth modified: %U", format_bfd_session, bs);
vlib_log_info (bm->log_class, "session auth modified: %U",
format_bfd_session_brief, bs);
bfd_auth_deactivate (bfd_session_t * bs, u8 is_delayed)
{
bfd_main_t *bm = &bfd_main;
-#if WITH_LIBSSL > 0
if (!is_delayed)
{
/* not delayed - deactivate the current key right now */
vlib_log_info (bm->log_class, "session auth modified: %U",
format_bfd_session_brief, bs);
return 0;
-#else
- vlib_log_err (bm->log_class,
- "SSL missing, cannot deactivate BFD authentication");
- return VNET_API_ERROR_BFD_NOTSUPP;
-#endif
}
vnet_api_error_t
bs->local_detect_mult = detect_mult;
bs->config_desired_min_tx_usec = desired_min_tx_usec;
- bs->config_desired_min_tx_clocks =
- bfd_usec_to_clocks (bm, desired_min_tx_usec);
+ bs->config_desired_min_tx_nsec = bfd_usec_to_nsec (desired_min_tx_usec);
bs->config_required_min_rx_usec = required_min_rx_usec;
- bs->config_required_min_rx_clocks =
- bfd_usec_to_clocks (bm, required_min_rx_usec);
+ bs->config_required_min_rx_nsec =
+ bfd_usec_to_nsec (required_min_rx_usec);
BFD_DBG ("\nChanged session params: %U", format_bfd_session, bs);
vlib_log_info (bm->log_class, "changed session params: %U",
const u8 * key_data)
{
bfd_main_t *bm = &bfd_main;
-#if WITH_LIBSSL > 0
bfd_auth_key_t *auth_key = NULL;
if (!key_len || key_len > bfd_max_key_len_for_auth_type (auth_type))
{
clib_memset (auth_key->key, 0, sizeof (auth_key->key));
clib_memcpy (auth_key->key, key_data, key_len);
return 0;
-#else
- vlib_log_err (bm->log_class,
- "SSL missing, cannot manipulate authentication keys");
- return VNET_API_ERROR_BFD_NOTSUPP;
-#endif
}
vnet_api_error_t
bfd_auth_del_key (u32 conf_key_id)
{
-#if WITH_LIBSSL > 0
bfd_auth_key_t *auth_key = NULL;
bfd_main_t *bm = &bfd_main;
uword *key_idx_p = hash_get (bm->auth_key_by_conf_key_id, conf_key_id);
return VNET_API_ERROR_BFD_ENOENT;
}
return 0;
-#else
- vlib_log_err (bm->log_class,
- "SSL missing, cannot manipulate authentication keys");
- return VNET_API_ERROR_BFD_NOTSUPP;
-#endif
}
bfd_main_t bfd_main;
Code Review / vpp.git / blobdiff