diff options
| -rw-r--r-- | src/vpp-api/client/client.c | 6 | ||||
| -rw-r--r-- | src/vpp-api/python/vpp_papi/vpp_transport_shmem.py | 11 |
2 files changed, 13 insertions, 4 deletions
diff --git a/src/vpp-api/client/client.c b/src/vpp-api/client/client.c index 5b47fd4dd7d..50d088c1bfb 100644 --- a/src/vpp-api/client/client.c +++ b/src/vpp-api/client/client.c @@ -450,11 +450,13 @@ vac_read (char **p, int *l, u16 timeout) int rv; vl_shmem_hdr_t *shmem_hdr; - if (!pm->connected_to_vlib) return -1; + /* svm_queue_sub(below) returns {-1, -2} */ + if (!pm->connected_to_vlib) return -3; *l = 0; - if (am->our_pid == 0) return (-1); + /* svm_queue_sub(below) returns {-1, -2} */ + if (am->our_pid == 0) return (-4); /* Poke timeout thread */ if (timeout) diff --git a/src/vpp-api/python/vpp_papi/vpp_transport_shmem.py b/src/vpp-api/python/vpp_papi/vpp_transport_shmem.py index 53ae775069f..64c1a59ba74 100644 --- a/src/vpp-api/python/vpp_papi/vpp_transport_shmem.py +++ b/src/vpp-api/python/vpp_papi/vpp_transport_shmem.py @@ -48,7 +48,13 @@ def vac_error_handler(arg, msg, msg_len): class VppTransportShmemIOError(IOError): - pass + """ exception communicating with vpp over shared memory """ + + def __init__(self, rv, descr): + self.rv = rv + self.desc = descr + + super(VppTransportShmemIOError, self).__init__(rv, descr) class VppTransport(object): @@ -117,7 +123,8 @@ class VppTransport(object): size = ffi.new("int *") rv = vpp_api.vac_read(mem, size, self.read_timeout) if rv: - raise VppTransportShmemIOError(rv, 'vac_read failed') + strerror = 'vac_read failed. It is likely that VPP died.' + raise VppTransportShmemIOError(rv, strerror) msg = bytes(ffi.buffer(mem[0], size[0])) vpp_api.vac_free(mem[0]) return msg |