diff options
Diffstat (limited to 'src/vlib/buffer_node.h')
| -rw-r--r-- | src/vlib/buffer_node.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/vlib/buffer_node.h b/src/vlib/buffer_node.h index 5bc547a4570..c0268b21562 100644 --- a/src/vlib/buffer_node.h +++ b/src/vlib/buffer_node.h @@ -236,6 +236,53 @@ do { \ } \ } while (0) +/** \brief Finish enqueueing one buffer forward in the graph, along with its + aux_data if possible. Standard single loop boilerplate element. This is a + MACRO, with MULTIPLE SIDE EFFECTS. In the ideal case, <code>next_index == + next0</code>, which means that the speculative enqueue at the top of the + single loop has correctly dealt with the packet in hand. In that case, the + macro does nothing at all. This function MAY return to_next_aux = NULL if + next_index does not support aux data + + @param vm vlib_main_t pointer, varies by thread + @param node current node vlib_node_runtime_t pointer + @param next_index speculated next index used for both packets + @param to_next speculated vector pointer used for both packets + @param to_next_aux speculated aux_data pointer used for both packets + @param n_left_to_next number of slots left in speculated vector + @param bi0 first buffer index + @param aux0 first aux_data + @param next0 actual next index to be used for the first packet + + @return @c next_index -- speculative next index to be used for future packets + @return @c to_next -- speculative frame to be used for future packets + @return @c n_left_to_next -- number of slots left in speculative frame +*/ +#define vlib_validate_buffer_enqueue_with_aux_x1( \ + vm, node, next_index, to_next, to_next_aux, n_left_to_next, bi0, aux0, \ + next0) \ + do \ + { \ + ASSERT (bi0 != 0); \ + if (PREDICT_FALSE (next0 != next_index)) \ + { \ + vlib_put_next_frame (vm, node, next_index, n_left_to_next + 1); \ + next_index = next0; \ + vlib_get_next_frame_with_aux_safe (vm, node, next_index, to_next, \ + to_next_aux, n_left_to_next); \ + \ + to_next[0] = bi0; \ + to_next += 1; \ + if (to_next_aux) \ + { \ + to_next_aux[0] = aux0; \ + to_next_aux += 1; \ + } \ + n_left_to_next -= 1; \ + } \ + } \ + while (0) + always_inline uword generic_buffer_node_inline (vlib_main_t * vm, vlib_node_runtime_t * node, |