bonding: add support for numa-only in lacp mode

If numa-only is set, Only slaves on local numa node
transmit pkts if have at least one, otherwise the bond
interface works as usual.

CLI change:
create bond mode lacp [load-balance { l2 | l23 | l34 } {numa-only}]
[hw-addr <mac-address>] [id <if-id>]

The new member "u8 numa_only;" is also added to bond_create_if_args_t.

Type: feature

Change-Id: Icdccedafb0738d8c9d4a5acce909ce562428c071
Signed-off-by: Zhiyong Yang <zhiyong.yang@intel.com>

1 files changed, 34 insertions, 2 deletions

diff --git a/src/vnet/bonding/cli.c b/src/vnet/bonding/cli.c
index cb344c611c2..371e3c1012c 100644
--- a/src/vnet/bonding/cli.c
+++ b/src/vnet/bonding/cli.c
@@ -47,6 +47,17 @@ bond_disable_collecting_distributing (vlib_main_t * vm, slave_if_t * sif)
 	  }
 	vec_del1 (bif->active_slaves, i);
 	hash_unset (bif->active_slave_by_sw_if_index, sif->sw_if_index);
+	if (sif->lacp_enabled && bif->numa_only)
+	  {
+	    /* For lacp mode, if we check it is a slave on local numa node,
+	       bif->n_numa_slaves should be decreased by 1 becasue the first
+	       bif->n_numa_slaves are all slaves on local numa node */
+	    if (i < bif->n_numa_slaves)
+	      {
+		bif->n_numa_slaves--;
+		ASSERT (bif->n_numa_slaves >= 0);
+	      }
+	  }
 	break;
       }
   }
@@ -104,7 +115,18 @@ bond_enable_collecting_distributing (vlib_main_t * vm, slave_if_t * sif)
     {
       hash_set (bif->active_slave_by_sw_if_index, sif->sw_if_index,
 		sif->sw_if_index);
-      vec_add1 (bif->active_slaves, sif->sw_if_index);
+
+      if ((sif->lacp_enabled && bif->numa_only)
+	  && (vm->numa_node == hw->numa_node))
+	{
+	  vec_insert_elts (bif->active_slaves, &sif->sw_if_index, 1,
+			   bif->n_numa_slaves);
+	  bif->n_numa_slaves++;
+	}
+      else
+	{
+	  vec_add1 (bif->active_slaves, sif->sw_if_index);
+	}
 
       /* First slave becomes active? */
       if ((vec_len (bif->active_slaves) == 1) &&
@@ -168,6 +190,7 @@ bond_dump_ifs (bond_interface_details_t ** out_bondifs)
                      strlen ((const char *) hi->name)));
     bondif->mode = bif->mode;
     bondif->lb = bif->lb;
+    bondif->numa_only = bif->numa_only;
     bondif->active_slaves = vec_len (bif->active_slaves);
     bondif->slaves = vec_len (bif->slaves);
   );
@@ -388,6 +411,7 @@ bond_create_if (vlib_main_t * vm, bond_create_if_args_t * args)
   sw = vnet_get_hw_sw_interface (vnm, bif->hw_if_index);
   bif->sw_if_index = sw->sw_if_index;
   bif->group = bif->sw_if_index;
+  bif->numa_only = args->numa_only;
   if (vlib_get_thread_main ()->n_vlib_mains > 1)
     clib_spinlock_init (&bif->lockp);
 
@@ -428,6 +452,14 @@ bond_create_command_fn (vlib_main_t * vm, unformat_input_t * input,
 	args.hw_addr_set = 1;
       else if (unformat (line_input, "id %u", &args.id))
 	;
+      else if (unformat (line_input, "numa-only"))
+	{
+	  if (args.mode == BOND_MODE_LACP)
+	    args.numa_only = 1;
+	  else
+	    return clib_error_return (0,
+				      "Only lacp mode supports numa-only so far!");
+	}
       else
 	return clib_error_return (0, "unknown input `%U'",
 				  format_unformat_error, input);
@@ -446,7 +478,7 @@ bond_create_command_fn (vlib_main_t * vm, unformat_input_t * input,
 VLIB_CLI_COMMAND (bond_create_command, static) = {
   .path = "create bond",
   .short_help = "create bond mode {round-robin | active-backup | broadcast | "
-    "{lacp | xor} [load-balance { l2 | l23 | l34 }]} [hw-addr <mac-address>] "
+    "{lacp | xor} [load-balance { l2 | l23 | l34 } {numa-only}]} [hw-addr <mac-address>] "
     "[id <if-id>]",
   .function = bond_create_command_fn,
 };