def setUp(self):
""" Clear trace before running each test"""
+ if self.vpp_dead:
+ raise Exception("VPP is dead when setting up the test")
self.vapi.cli("clear trace")
# store the test instance inside the test class - so that objects
# holding the class can access instance methods (like assertEqual)
raise
def setUp(self):
+ super(BFDTestCase, self).setUp()
self.vapi.want_bfd_events()
self.vpp_session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
self.vpp_session.add_vpp_config()
{
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);
- ASSERT (timeout > 0);
- (void) vlib_process_wait_for_event_or_clock (vm, timeout);
+ if (timeout < 0)
+ {
+ BFD_DBG ("negative timeout, already expired, skipping wait");
+ event_type = ~0;
+ }
+ else
+ {
+ (void) vlib_process_wait_for_event_or_clock (vm, timeout);
+ event_type = vlib_process_get_events (vm, &event_data);
+ }
}
- event_type = vlib_process_get_events (vm, &event_data);
now = clib_cpu_time_now ();
switch (event_type)
{
static void bfd_udp4_find_headers (vlib_buffer_t *b, const ip4_header_t **ip4,
const udp_header_t **udp)
{
- *ip4 = vnet_buffer (b)->ip.header;
+ /* sanity check first */
+ const i32 start = vnet_buffer (b)->ip.start_of_ip_header;
+ if (start < 0 && start < sizeof (b->pre_data))
+ {
+ BFD_ERR ("Start of ip header is before pre_data, ignoring");
+ *ip4 = NULL;
+ *udp = NULL;
+ return;
+ }
+ *ip4 = (ip4_header_t *)(b->data + start);
+ if ((u8 *)*ip4 > (u8 *)vlib_buffer_get_current (b))
+ {
+ BFD_ERR ("Start of ip header is beyond current data, ignoring");
+ *ip4 = NULL;
+ *udp = NULL;
+ return;
+ }
*udp = (udp_header_t *)((*ip4) + 1);
}
next0 = BFD_UDP_INPUT_NEXT_NORMAL;
if (BFD_UDP_ERROR_NONE == error0)
{
- /* if everything went fine, check for poll bit, if present, re-use
- the buffer and based on (now update) session parameters, send the
- final packet back */
+ /* if everything went fine, check for poll bit, if present, re-use
+ the buffer and based on (now update) session parameters, send the
+ final packet back */
const bfd_pkt_t *pkt = vlib_buffer_get_current (b0);
if (bfd_pkt_get_poll (pkt))
{
bfd_send_final (vm, b0, bs);
- next0 = BFD_UDP_INPUT_NEXT_REPLY;
+ next0 = BFD_UDP_INPUT_NEXT_REPLY;
}
}
vlib_set_next_frame_buffer (vm, rt, next0, bi0);
u32 data;
} icmp;
- /* IP header - saved by ip*_local nodes */
- void *header;
+ /* IP header offset from vlib_buffer.data - saved by ip*_local nodes */
+ i32 start_of_ip_header;
};
} ip;
ip0 = vlib_buffer_get_current (p0);
ip1 = vlib_buffer_get_current (p1);
- vnet_buffer (p0)->ip.header = ip0;
- vnet_buffer (p1)->ip.header = ip1;
+ vnet_buffer (p0)->ip.start_of_ip_header = p0->current_data;
+ vnet_buffer (p1)->ip.start_of_ip_header = p1->current_data;
fib_index0 = vec_elt (im->fib_index_by_sw_if_index,
vnet_buffer (p0)->sw_if_index[VLIB_RX]);
ip0 = vlib_buffer_get_current (p0);
- vnet_buffer (p0)->ip.header = ip0;
+ vnet_buffer (p0)->ip.start_of_ip_header = p0->current_data;
fib_index0 = vec_elt (im->fib_index_by_sw_if_index,
vnet_buffer(p0)->sw_if_index[VLIB_RX]);