X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvcl%2Fvcl_private.c;h=721416b045a0760da636941d31883e2d8e7cc6f4;hb=4ac258497;hp=fd35db0b678d673b532828118e95344c2c0913ea;hpb=935ce75cb060da34991e6b02bec5680445f85323;p=vpp.git

diff --git a/src/vcl/vcl_private.c b/src/vcl/vcl_private.c
index fd35db0b678..721416b045a 100644
--- a/src/vcl/vcl_private.c
+++ b/src/vcl/vcl_private.c
@@ -46,7 +46,7 @@ vcl_mq_epoll_add_evfd (vcl_worker_t * wrk, svm_msg_q_t * mq)
   u32 mqc_index;
   int mq_fd;
 
-  mq_fd = svm_msg_q_get_consumer_eventfd (mq);
+  mq_fd = svm_msg_q_get_eventfd (mq);
 
   if (wrk->mqs_epfd < 0 || mq_fd == -1)
     return -1;
@@ -138,8 +138,14 @@ vcl_worker_cleanup (vcl_worker_t * wrk, u8 notify_vpp)
 static void
 vcl_worker_cleanup_cb (void *arg)
 {
-  vcl_worker_t *wrk = vcl_worker_get_current ();
-  u32 wrk_index = wrk->wrk_index;
+  vcl_worker_t *wrk;
+  u32 wrk_index;
+
+  wrk_index = vcl_get_worker_index ();
+  wrk = vcl_worker_get_if_valid (wrk_index);
+  if (!wrk)
+    return;
+
   vcl_worker_cleanup (wrk, 1 /* notify vpp */ );
   vcl_set_worker_index (~0);
   VDBG (0, "cleaned up worker %u", wrk_index);
@@ -226,100 +232,87 @@ vcl_worker_ctrl_mq (vcl_worker_t * wrk)
 }
 
 int
-vcl_session_read_ready (vcl_session_t * session)
+vcl_session_read_ready (vcl_session_t * s)
 {
-  u32 max_deq;
-
-  /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
-  if (PREDICT_FALSE (session->is_vep))
+  if (PREDICT_FALSE (s->flags & VCL_SESSION_F_IS_VEP))
     {
       VDBG (0, "ERROR: session %u: cannot read from an epoll session!",
-	    session->session_index);
+	    s->session_index);
       return VPPCOM_EBADFD;
     }
 
-  if (PREDICT_FALSE (!(session->session_state & (STATE_OPEN | STATE_LISTEN))))
+  if (vcl_session_is_open (s))
     {
-      vcl_session_state_t state = session->session_state;
-      int rv;
+      if (vcl_session_is_ct (s))
+	return svm_fifo_max_dequeue_cons (s->ct_rx_fifo);
 
-      rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
+      if (s->is_dgram)
+	{
+	  session_dgram_pre_hdr_t ph;
+	  u32 max_deq;
+
+	  max_deq = svm_fifo_max_dequeue_cons (s->rx_fifo);
+	  if (max_deq <= SESSION_CONN_HDR_LEN)
+	    return 0;
+	  if (svm_fifo_peek (s->rx_fifo, 0, sizeof (ph), (u8 *) & ph) < 0)
+	    return 0;
+	  if (ph.data_length + SESSION_CONN_HDR_LEN > max_deq)
+	    return 0;
+
+	  return ph.data_length;
+	}
 
-      VDBG (1, "session %u [0x%llx]: not open! state 0x%x (%s), ret %d (%s)",
-	    session->session_index, session->vpp_handle, state,
-	    vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
-      return rv;
+      return svm_fifo_max_dequeue_cons (s->rx_fifo);
     }
-
-  if (session->session_state & STATE_LISTEN)
-    return clib_fifo_elts (session->accept_evts_fifo);
-
-  if (vcl_session_is_ct (session))
-    return svm_fifo_max_dequeue_cons (session->ct_rx_fifo);
-
-  max_deq = svm_fifo_max_dequeue_cons (session->rx_fifo);
-
-  if (session->is_dgram)
+  else if (s->session_state == VCL_STATE_LISTEN)
     {
-      session_dgram_pre_hdr_t ph;
-
-      if (max_deq <= SESSION_CONN_HDR_LEN)
-	return 0;
-      if (svm_fifo_peek (session->rx_fifo, 0, sizeof (ph), (u8 *) & ph) < 0)
-	return 0;
-      if (ph.data_length + SESSION_CONN_HDR_LEN > max_deq)
-	return 0;
-
-      return ph.data_length;
+      return clib_fifo_elts (s->accept_evts_fifo);
+    }
+  else
+    {
+      return (s->session_state == VCL_STATE_DISCONNECT) ?
+	VPPCOM_ECONNRESET : VPPCOM_ENOTCONN;
     }
-
-  return max_deq;
 }
 
 int
-vcl_session_write_ready (vcl_session_t * session)
+vcl_session_write_ready (vcl_session_t * s)
 {
-  /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
-  if (PREDICT_FALSE (session->is_vep))
+  if (PREDICT_FALSE (s->flags & VCL_SESSION_F_IS_VEP))
     {
       VDBG (0, "session %u [0x%llx]: cannot write to an epoll session!",
-	    session->session_index, session->vpp_handle);
+	    s->session_index, s->vpp_handle);
       return VPPCOM_EBADFD;
     }
 
-  if (PREDICT_FALSE (session->session_state & STATE_LISTEN))
-    {
-      if (session->tx_fifo)
-	return svm_fifo_max_enqueue_prod (session->tx_fifo);
-      else
-	return VPPCOM_EBADFD;
-    }
-
-  if (PREDICT_FALSE (!(session->session_state & STATE_OPEN)))
+  if (vcl_session_is_open (s))
     {
-      vcl_session_state_t state = session->session_state;
-      int rv;
+      if (vcl_session_is_ct (s))
+	return svm_fifo_max_enqueue_prod (s->ct_tx_fifo);
 
-      rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
-      VDBG (0, "session %u [0x%llx]: not open! state 0x%x (%s), ret %d (%s)",
-	    session->session_index, session->vpp_handle, state,
-	    vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
-      return rv;
-    }
+      if (s->is_dgram)
+	{
+	  u32 max_enq = svm_fifo_max_enqueue_prod (s->tx_fifo);
 
-  if (vcl_session_is_ct (session))
-    return svm_fifo_max_enqueue_prod (session->ct_tx_fifo);
+	  if (max_enq <= sizeof (session_dgram_hdr_t))
+	    return 0;
+	  return max_enq - sizeof (session_dgram_hdr_t);
+	}
 
-  if (session->is_dgram)
+      return svm_fifo_max_enqueue_prod (s->tx_fifo);
+    }
+  else if (s->session_state == VCL_STATE_LISTEN)
     {
-      u32 max_enq = svm_fifo_max_enqueue_prod (session->tx_fifo);
-
-      if (max_enq <= sizeof (session_dgram_hdr_t))
-	return 0;
-      return max_enq - sizeof (session_dgram_hdr_t);
+      if (s->tx_fifo)
+	return svm_fifo_max_enqueue_prod (s->tx_fifo);
+      else
+	return VPPCOM_EBADFD;
+    }
+  else
+    {
+      return (s->session_state == VCL_STATE_DISCONNECT) ?
+	VPPCOM_ECONNRESET : VPPCOM_ENOTCONN;
     }
-
-  return svm_fifo_max_enqueue_prod (session->tx_fifo);
 }
 
 int
@@ -347,7 +340,7 @@ vcl_segment_attach (u64 segment_handle, char *name, ssvm_segment_type_t type,
 
   clib_rwlock_writer_unlock (&vcm->segment_table_lock);
 
-  vec_reset_length (a->new_segment_indices);
+  vec_free (a->new_segment_indices);
   return 0;
 }
 
@@ -387,6 +380,170 @@ vcl_segment_detach (u64 segment_handle)
   VDBG (0, "detached segment %u handle %u", segment_index, segment_handle);
 }
 
+int
+vcl_segment_attach_session (uword segment_handle, uword rxf_offset,
+			    uword txf_offset, uword mq_offset, u8 is_ct,
+			    vcl_session_t *s)
+{
+  u32 fs_index, eqs_index;
+  svm_fifo_t *rxf, *txf;
+  fifo_segment_t *fs;
+  u64 eqs_handle;
+
+  fs_index = vcl_segment_table_lookup (segment_handle);
+  if (fs_index == VCL_INVALID_SEGMENT_INDEX)
+    {
+      VDBG (0, "ERROR: segment for session %u is not mounted!",
+	    s->session_index);
+      return -1;
+    }
+
+  if (!is_ct && mq_offset != (uword) ~0)
+    {
+      eqs_handle = vcl_vpp_worker_segment_handle (0);
+      eqs_index = vcl_segment_table_lookup (eqs_handle);
+      ASSERT (eqs_index != VCL_INVALID_SEGMENT_INDEX);
+    }
+
+  clib_rwlock_reader_lock (&vcm->segment_table_lock);
+
+  fs = fifo_segment_get_segment (&vcm->segment_main, fs_index);
+  rxf = fifo_segment_alloc_fifo_w_offset (fs, rxf_offset);
+  txf = fifo_segment_alloc_fifo_w_offset (fs, txf_offset);
+  rxf->segment_index = fs_index;
+  txf->segment_index = fs_index;
+
+  if (!is_ct && mq_offset != (uword) ~0)
+    {
+      fs = fifo_segment_get_segment (&vcm->segment_main, eqs_index);
+      s->vpp_evt_q =
+	fifo_segment_msg_q_attach (fs, mq_offset, rxf->shr->slice_index);
+    }
+
+  clib_rwlock_reader_unlock (&vcm->segment_table_lock);
+
+  if (!is_ct)
+    {
+      rxf->shr->client_session_index = s->session_index;
+      txf->shr->client_session_index = s->session_index;
+      rxf->client_thread_index = vcl_get_worker_index ();
+      txf->client_thread_index = vcl_get_worker_index ();
+      s->rx_fifo = rxf;
+      s->tx_fifo = txf;
+    }
+  else
+    {
+      s->ct_rx_fifo = rxf;
+      s->ct_tx_fifo = txf;
+    }
+
+  return 0;
+}
+
+void
+vcl_session_detach_fifos (vcl_session_t *s)
+{
+  fifo_segment_t *fs;
+
+  if (!s->rx_fifo)
+    return;
+
+  clib_rwlock_reader_lock (&vcm->segment_table_lock);
+
+  fs = fifo_segment_get_segment_if_valid (&vcm->segment_main,
+					  s->rx_fifo->segment_index);
+  if (!fs)
+    goto done;
+
+  fifo_segment_free_client_fifo (fs, s->rx_fifo);
+  fifo_segment_free_client_fifo (fs, s->tx_fifo);
+  if (s->ct_rx_fifo)
+    {
+      fs = fifo_segment_get_segment_if_valid (&vcm->segment_main,
+					      s->ct_rx_fifo->segment_index);
+      if (!fs)
+	goto done;
+
+      fifo_segment_free_client_fifo (fs, s->ct_rx_fifo);
+      fifo_segment_free_client_fifo (fs, s->ct_tx_fifo);
+    }
+
+done:
+  clib_rwlock_reader_unlock (&vcm->segment_table_lock);
+}
+
+int
+vcl_segment_attach_mq (uword segment_handle, uword mq_offset, u32 mq_index,
+		       svm_msg_q_t **mq)
+{
+  fifo_segment_t *fs;
+  u32 fs_index;
+
+  fs_index = vcl_segment_table_lookup (segment_handle);
+  if (fs_index == VCL_INVALID_SEGMENT_INDEX)
+    {
+      VDBG (0, "ERROR: mq segment %lx for is not attached!", segment_handle);
+      return -1;
+    }
+
+  clib_rwlock_reader_lock (&vcm->segment_table_lock);
+
+  fs = fifo_segment_get_segment (&vcm->segment_main, fs_index);
+  *mq = fifo_segment_msg_q_attach (fs, mq_offset, mq_index);
+
+  clib_rwlock_reader_unlock (&vcm->segment_table_lock);
+
+  return 0;
+}
+
+int
+vcl_segment_discover_mqs (uword segment_handle, int *fds, u32 n_fds)
+{
+  fifo_segment_t *fs;
+  u32 fs_index;
+
+  fs_index = vcl_segment_table_lookup (segment_handle);
+  if (fs_index == VCL_INVALID_SEGMENT_INDEX)
+    {
+      VDBG (0, "ERROR: mq segment %lx for is not attached!", segment_handle);
+      return -1;
+    }
+
+  clib_rwlock_reader_lock (&vcm->segment_table_lock);
+
+  fs = fifo_segment_get_segment (&vcm->segment_main, fs_index);
+  fifo_segment_msg_qs_discover (fs, fds, n_fds);
+
+  clib_rwlock_reader_unlock (&vcm->segment_table_lock);
+
+  return 0;
+}
+
+svm_fifo_chunk_t *
+vcl_segment_alloc_chunk (uword segment_handle, u32 slice_index, u32 size,
+			 uword *offset)
+{
+  svm_fifo_chunk_t *c;
+  fifo_segment_t *fs;
+  u32 fs_index;
+
+  fs_index = vcl_segment_table_lookup (segment_handle);
+  if (fs_index == VCL_INVALID_SEGMENT_INDEX)
+    {
+      VDBG (0, "ERROR: mq segment %lx for is not attached!", segment_handle);
+      return 0;
+    }
+
+  clib_rwlock_reader_lock (&vcm->segment_table_lock);
+
+  fs = fifo_segment_get_segment (&vcm->segment_main, fs_index);
+  c = fifo_segment_alloc_chunk_w_slice (fs, slice_index, size);
+  *offset = fifo_segment_chunk_offset (fs, c);
+
+  clib_rwlock_reader_unlock (&vcm->segment_table_lock);
+
+  return c;
+}
 
 /*
  * fd.io coding-style-patch-verification: ON