diff options
| author |   John Lo <loj@cisco.com> | 2017-09-19 21:45:10 -0400 |
|---|---|---|
| committer |   Dave Barach <openvpp@barachs.net> | 2017-09-20 11:50:49 +0000 |
| commit | 609707ea530de6a0f9fa989b8269b973dd89174e (patch) | |
| tree | 5d912ea898dc8d6c7383a62ef2a21e5669e7955c | |
| parent | 1bfd37295f5cd332b7326923f1fbd5e0415829cd (diff) | |
Fix DHCP client so it works for worker threads
Fix dhcp_client_for_us() function to utilize rpc_call_main_thread
to call vlib_process_signal_event() to ensure proper handling
irrespective of it being called in main thread or worker thread.
Added ASSERT to vlib_process_sinal.. path to make sure it is called
in main thread.
Change-Id: I4109cc049d8e4225d896ce492ce201011dc9c911
Signed-off-by: John Lo <loj@cisco.com>
| -rw-r--r-- | src/vlib/node_funcs.h | 3 | ||||
| -rw-r--r-- | src/vnet/dhcp/client.c | 16 |
2 files changed, 17 insertions, 2 deletions
diff --git a/src/vlib/node_funcs.h b/src/vlib/node_funcs.h index 0059b9be..3ae4e541 100644 --- a/src/vlib/node_funcs.h +++ b/src/vlib/node_funcs.h @@ -851,6 +851,9 @@ vlib_process_signal_event_data (vlib_main_t * vm, vlib_process_t *p = vec_elt (nm->processes, n->runtime_index); uword *h, t; + /* Must be in main thread */ + ASSERT (vlib_get_thread_index () == 0); + h = hash_get (p->event_type_index_by_type_opaque, type_opaque); if (!h) { diff --git a/src/vnet/dhcp/client.c b/src/vnet/dhcp/client.c index dd5e99f2..5986438b 100644 --- a/src/vnet/dhcp/client.c +++ b/src/vnet/dhcp/client.c @@ -120,6 +120,17 @@ set_l2_rewrite (dhcp_client_main_t * dcm, dhcp_client_t * c) 0 /* broadcast */); } +void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length); + +static void +dhcp_client_proc_callback (uword * client_index) +{ + vlib_main_t *vm = vlib_get_main (); + ASSERT (vlib_get_thread_index () == 0); + vlib_process_signal_event (vm, dhcp_client_process_node.index, + EVENT_DHCP_CLIENT_WAKEUP, *client_index); +} + /* * dhcp_client_for_us - server-to-client callback. * Called from proxy_node.c:dhcp_proxy_to_client_input(). @@ -251,8 +262,9 @@ int dhcp_client_for_us (u32 bi, vlib_buffer_t * b, c->retry_count = 0; c->next_transmit = 0; /* send right now... */ /* Poke the client process, which will send the request */ - vlib_process_signal_event (vm, dhcp_client_process_node.index, - EVENT_DHCP_CLIENT_WAKEUP, c - dcm->clients); + uword client_id = c - dcm->clients; + vl_api_rpc_call_main_thread (dhcp_client_proc_callback, + (u8 *) &client_id, sizeof (uword)); break; case DHCP_BOUND: |