vcl: set want deq flag earlier in epoll ctl mod

[vpp.git] / src / vcl / vppcom.c

diff --git a/src/vcl/vppcom.c b/src/vcl/vppcom.c
index 43f6b74..0b4d757 100644 (file)
--- a/src/vcl/vppcom.c
+++ b/src/vcl/vppcom.c
@@ -2929,6 +2929,15 @@ vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle,
          goto done;
        }
 
+      txf = vcl_session_is_ct (s) ? s->ct_tx_fifo : s->tx_fifo;
+      if (txf)
+       {
+         if (event->events & EPOLLOUT)
+           svm_fifo_add_want_deq_ntf (txf, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
+         else
+           svm_fifo_del_want_deq_ntf (txf, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
+       }
+
       /* Generate EPOLLOUT if session write ready nd event was not on */
       if ((event->events & EPOLLOUT) && !(s->vep.ev.events & EPOLLOUT) &&
          (vcl_session_write_ready (s) > 0))
@@ -2945,14 +2954,7 @@ vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle,
        }
       s->vep.et_mask = VEP_DEFAULT_ET_MASK;
       s->vep.ev = *event;
-      txf = vcl_session_is_ct (s) ? s->ct_tx_fifo : s->tx_fifo;
-      if (txf)
-       {
-         if (event->events & EPOLLOUT)
-           svm_fifo_add_want_deq_ntf (txf, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
-         else
-           svm_fifo_del_want_deq_ntf (txf, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
-       }
+
       VDBG (1, "EPOLL_CTL_MOD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!",
            vep_handle, session_handle, event->events, event->data.u64);
       break;