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api: fix bug in pcap capture api

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pcap api cleanup can cause crash in certain scenarios
e.g.missing/invalid 'filename' parameter.

Type: fix

Change-Id: I92417765960de84e30ed7cb945d40c50d722fb6c
Signed-off-by: Hadi Rayan Al-Sandid <halsandi@cisco.com>
This commit is contained in:
Hadi Rayan Al-Sandid 2024-11-26 17:25:27 +01:00 committed by Beno�t Ganne
parent 1beb88ed3b
commit 7d469364c5
2 changed files with 11 additions and 1 deletions
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2
src/vnet/interface_api.c
View File

@ -1653,6 +1653,7 @@ vl_api_pcap_trace_on_t_handler (vl_api_pcap_trace_on_t *mp)
unformat_init_cstring (&drop_err_name, (char *) mp->error);
unformat_user (&drop_err_name, unformat_vlib_error, vlib_get_main (),
&capture_args.drop_err);
unformat_free (&drop_err_name);
rv = vnet_pcap_dispatch_trace_configure (&capture_args);
@ -1660,7 +1661,6 @@ vl_api_pcap_trace_on_t_handler (vl_api_pcap_trace_on_t *mp)
out:
unformat_free (&filename);
unformat_free (&drop_err_name);
REPLY_MACRO (VL_API_PCAP_TRACE_ON_REPLY);
}

10
test/test_pcap.py
View File

@ -163,6 +163,16 @@ class TestPcap(VppTestCase):
os.remove("/tmp/trace_any_filter.pcap")
os.remove("/tmp/trace_drop_err.pcap")
# Attempting to start a trace with no filename should return an error
with self.vapi.assert_negative_api_retval():
self.vapi.pcap_trace_on(
capture_rx=True,
capture_tx=True,
filter=True,
max_packets=1000,
sw_if_index=0,
)
if __name__ == "__main__":
unittest.main(testRunner=VppTestRunner)