flow dpdk: introduce IP in IP support for flow

This patch introduces IP in IP packet support for flow cli and dpdk plugin.
Specifically, the following IP in IP packet types are supported:
	MAC-IPv4-IPv4-TCP/UDP/None,
	MAC-IPv4-IPv6-TCP/UDP/None,
	MAC-IPv6-IPv4-TCP/UDP/None,
	MAC-IPv6-IPv6-TCP/UDP/None,

IP in IP flow rules can be created by using the following new keywords in vppctl:
	in-src-ip, in-dst-ip        : to provide information for inner IPv4 header
	in-ip6-src-ip, in-ip6-dst-ip: to provide information for inner IPv6 header
	in-proto                    : to specify inner transport layer protocol type (TCP or UDP)
	in-src-port, in-dst-port    : to provide information for inner TCP/UDP header

An example to create flow rule for MAC-IPv6-IPv6-TCP:
	test flow add index 0 ip6-src-ip any ip6-dst-ip any in-ip6-src-ip any in-ip6-dst-ip any in-proto tcp in-src-port 1234 in-dst-port any rss function default

Another example to create flow rule for MAC-IPv6-IPv6:
	test flow add index 0 ip6-src-ip any in-ip6-src-ip any rss function default

Type: feature

Signed-off-by: Xinyao Cai <xinyao.cai@intel.com>
Change-Id: I6a1ca36d47eb65b9cb5a4b8d874b2a7f017c35cd

1 files changed, 149 insertions, 20 deletions

diff --git a/src/plugins/dpdk/device/flow.c b/src/plugins/dpdk/device/flow.c
index be453bb9577..635f6f37ebf 100644
--- a/src/plugins/dpdk/device/flow.c
+++ b/src/plugins/dpdk/device/flow.c
@@ -29,22 +29,30 @@
 #define FLOW_IS_ETHERNET_CLASS(f) \
   (f->type == VNET_FLOW_TYPE_ETHERNET)
 
-#define FLOW_IS_IPV4_CLASS(f) \
-  ((f->type == VNET_FLOW_TYPE_IP4) || \
-    (f->type == VNET_FLOW_TYPE_IP4_N_TUPLE) || \
-    (f->type == VNET_FLOW_TYPE_IP4_N_TUPLE_TAGGED) || \
-    (f->type == VNET_FLOW_TYPE_IP4_VXLAN) || \
-    (f->type == VNET_FLOW_TYPE_IP4_GTPC) || \
-    (f->type == VNET_FLOW_TYPE_IP4_GTPU) || \
-    (f->type == VNET_FLOW_TYPE_IP4_L2TPV3OIP) || \
-    (f->type == VNET_FLOW_TYPE_IP4_IPSEC_ESP) || \
-    (f->type == VNET_FLOW_TYPE_IP4_IPSEC_AH))
-
-#define FLOW_IS_IPV6_CLASS(f) \
-  ((f->type == VNET_FLOW_TYPE_IP6) || \
-    (f->type == VNET_FLOW_TYPE_IP6_N_TUPLE) || \
-    (f->type == VNET_FLOW_TYPE_IP6_N_TUPLE_TAGGED) || \
-    (f->type == VNET_FLOW_TYPE_IP6_VXLAN))
+#define FLOW_IS_IPV4_CLASS(f)                                                 \
+  ((f->type == VNET_FLOW_TYPE_IP4) ||                                         \
+   (f->type == VNET_FLOW_TYPE_IP4_N_TUPLE) ||                                 \
+   (f->type == VNET_FLOW_TYPE_IP4_N_TUPLE_TAGGED) ||                          \
+   (f->type == VNET_FLOW_TYPE_IP4_VXLAN) ||                                   \
+   (f->type == VNET_FLOW_TYPE_IP4_GTPC) ||                                    \
+   (f->type == VNET_FLOW_TYPE_IP4_GTPU) ||                                    \
+   (f->type == VNET_FLOW_TYPE_IP4_L2TPV3OIP) ||                               \
+   (f->type == VNET_FLOW_TYPE_IP4_IPSEC_ESP) ||                               \
+   (f->type == VNET_FLOW_TYPE_IP4_IPSEC_AH) ||                                \
+   (f->type == VNET_FLOW_TYPE_IP4_IP4) ||                                     \
+   (f->type == VNET_FLOW_TYPE_IP4_IP6) ||                                     \
+   (f->type == VNET_FLOW_TYPE_IP4_IP4_N_TUPLE) ||                             \
+   (f->type == VNET_FLOW_TYPE_IP4_IP6_N_TUPLE))
+
+#define FLOW_IS_IPV6_CLASS(f)                                                 \
+  ((f->type == VNET_FLOW_TYPE_IP6) ||                                         \
+   (f->type == VNET_FLOW_TYPE_IP6_N_TUPLE) ||                                 \
+   (f->type == VNET_FLOW_TYPE_IP6_N_TUPLE_TAGGED) ||                          \
+   (f->type == VNET_FLOW_TYPE_IP6_VXLAN) ||                                   \
+   (f->type == VNET_FLOW_TYPE_IP6_IP4) ||                                     \
+   (f->type == VNET_FLOW_TYPE_IP6_IP6) ||                                     \
+   (f->type == VNET_FLOW_TYPE_IP6_IP4_N_TUPLE) ||                             \
+   (f->type == VNET_FLOW_TYPE_IP6_IP6_N_TUPLE))
 
 /* check if flow is VLAN sensitive */
 #define FLOW_HAS_VLAN_TAG(f) \
@@ -70,6 +78,13 @@
     (f->type == VNET_FLOW_TYPE_IP4_GTPC) || \
     (f->type == VNET_FLOW_TYPE_IP4_GTPU))
 
+/* check if flow has a inner TCP/UDP header */
+#define FLOW_HAS_INNER_N_TUPLE(f)                                             \
+  ((f->type == VNET_FLOW_TYPE_IP4_IP4_N_TUPLE) ||                             \
+   (f->type == VNET_FLOW_TYPE_IP4_IP6_N_TUPLE) ||                             \
+   (f->type == VNET_FLOW_TYPE_IP6_IP4_N_TUPLE) ||                             \
+   (f->type == VNET_FLOW_TYPE_IP6_IP6_N_TUPLE))
+
 /* constant structs */
 static const struct rte_flow_attr ingress = {.ingress = 1 };
 
@@ -153,10 +168,10 @@ static int
 dpdk_flow_add (dpdk_device_t * xd, vnet_flow_t * f, dpdk_flow_entry_t * fe)
 {
   struct rte_flow_item_eth eth[2] = { };
-  struct rte_flow_item_ipv4 ip4[2] = { };
-  struct rte_flow_item_ipv6 ip6[2] = { };
-  struct rte_flow_item_udp udp[2] = { };
-  struct rte_flow_item_tcp tcp[2] = { };
+  struct rte_flow_item_ipv4 ip4[2] = {}, in_ip4[2] = {};
+  struct rte_flow_item_ipv6 ip6[2] = {}, in_ip6[2] = {};
+  struct rte_flow_item_udp udp[2] = {}, in_UDP[2] = {};
+  struct rte_flow_item_tcp tcp[2] = {}, in_TCP[2] = {};
   struct rte_flow_item_gtp gtp[2] = { };
   struct rte_flow_item_l2tpv3oip l2tp[2] = { };
   struct rte_flow_item_esp esp[2] = { };
@@ -472,12 +487,118 @@ dpdk_flow_add (dpdk_device_t * xd, vnet_flow_t * f, dpdk_flow_entry_t * fe)
 	  item->mask = raw + 1;
 	}
       break;
+    case IP_PROTOCOL_IPV6:
+      item->type = RTE_FLOW_ITEM_TYPE_IPV6;
+
+#define fill_inner_ip6_with_outer_ipv(OUTER_IP_VER)                           \
+  if (f->type == VNET_FLOW_TYPE_IP##OUTER_IP_VER##_IP6 ||                     \
+      f->type == VNET_FLOW_TYPE_IP##OUTER_IP_VER##_IP6_N_TUPLE)               \
+    {                                                                         \
+      vnet_flow_ip##OUTER_IP_VER##_ip6_t *ptr = &f->ip##OUTER_IP_VER##_ip6;   \
+      if ((ptr->in_src_addr.mask.as_u64[0] == 0) &&                           \
+	  (ptr->in_src_addr.mask.as_u64[1] == 0) &&                           \
+	  (ptr->in_dst_addr.mask.as_u64[0] == 0) &&                           \
+	  (ptr->in_dst_addr.mask.as_u64[1] == 0) && (!ptr->in_protocol.mask)) \
+	{                                                                     \
+	  item->spec = NULL;                                                  \
+	  item->mask = NULL;                                                  \
+	}                                                                     \
+      else                                                                    \
+	{                                                                     \
+	  clib_memcpy (in_ip6[0].hdr.src_addr, &ptr->in_src_addr.addr,        \
+		       ARRAY_LEN (ptr->in_src_addr.addr.as_u8));              \
+	  clib_memcpy (in_ip6[1].hdr.src_addr, &ptr->in_src_addr.mask,        \
+		       ARRAY_LEN (ptr->in_src_addr.mask.as_u8));              \
+	  clib_memcpy (in_ip6[0].hdr.dst_addr, &ptr->in_dst_addr.addr,        \
+		       ARRAY_LEN (ptr->in_dst_addr.addr.as_u8));              \
+	  clib_memcpy (in_ip6[1].hdr.dst_addr, &ptr->in_dst_addr.mask,        \
+		       ARRAY_LEN (ptr->in_dst_addr.mask.as_u8));              \
+	  item->spec = in_ip6;                                                \
+	  item->mask = in_ip6 + 1;                                            \
+	}                                                                     \
+    }
+      fill_inner_ip6_with_outer_ipv (6) fill_inner_ip6_with_outer_ipv (4)
+#undef fill_inner_ip6_with_outer_ipv
+	break;
+    case IP_PROTOCOL_IP_IN_IP:
+      item->type = RTE_FLOW_ITEM_TYPE_IPV4;
 
+#define fill_inner_ip4_with_outer_ipv(OUTER_IP_VER)                           \
+  if (f->type == VNET_FLOW_TYPE_IP##OUTER_IP_VER##_IP4 ||                     \
+      f->type == VNET_FLOW_TYPE_IP##OUTER_IP_VER##_IP4_N_TUPLE)               \
+    {                                                                         \
+      vnet_flow_ip##OUTER_IP_VER##_ip4_t *ptr = &f->ip##OUTER_IP_VER##_ip4;   \
+      if ((!ptr->in_src_addr.mask.as_u32) &&                                  \
+	  (!ptr->in_dst_addr.mask.as_u32) && (!ptr->in_protocol.mask))        \
+	{                                                                     \
+	  item->spec = NULL;                                                  \
+	  item->mask = NULL;                                                  \
+	}                                                                     \
+      else                                                                    \
+	{                                                                     \
+	  in_ip4[0].hdr.src_addr = ptr->in_src_addr.addr.as_u32;              \
+	  in_ip4[1].hdr.src_addr = ptr->in_src_addr.mask.as_u32;              \
+	  in_ip4[0].hdr.dst_addr = ptr->in_dst_addr.addr.as_u32;              \
+	  in_ip4[1].hdr.dst_addr = ptr->in_dst_addr.mask.as_u32;              \
+	  item->spec = in_ip4;                                                \
+	  item->mask = in_ip4 + 1;                                            \
+	}                                                                     \
+    }
+      fill_inner_ip4_with_outer_ipv (6) fill_inner_ip4_with_outer_ipv (4)
+#undef fill_inner_ip4_with_outer_ipv
+	break;
     default:
       rv = VNET_FLOW_ERROR_NOT_SUPPORTED;
       goto done;
     }
 
+  if (FLOW_HAS_INNER_N_TUPLE (f))
+    {
+      vec_add2 (items, item, 1);
+
+#define fill_inner_n_tuple_of(proto)                                          \
+  item->type = RTE_FLOW_ITEM_TYPE_##proto;                                    \
+  if ((ptr->in_src_port.mask == 0) && (ptr->in_dst_port.mask == 0))           \
+    {                                                                         \
+      item->spec = NULL;                                                      \
+      item->mask = NULL;                                                      \
+    }                                                                         \
+  else                                                                        \
+    {                                                                         \
+      in_##proto[0].hdr.src_port =                                            \
+	clib_host_to_net_u16 (ptr->in_src_port.port);                         \
+      in_##proto[1].hdr.src_port =                                            \
+	clib_host_to_net_u16 (ptr->in_src_port.mask);                         \
+      in_##proto[0].hdr.dst_port =                                            \
+	clib_host_to_net_u16 (ptr->in_dst_port.port);                         \
+      in_##proto[1].hdr.dst_port =                                            \
+	clib_host_to_net_u16 (ptr->in_dst_port.mask);                         \
+      item->spec = in_##proto;                                                \
+      item->mask = in_##proto + 1;                                            \
+    }
+
+#define fill_inner_n_tuple(OUTER_IP_VER, INNER_IP_VER)                        \
+  if (f->type ==                                                              \
+      VNET_FLOW_TYPE_IP##OUTER_IP_VER##_IP##INNER_IP_VER##_N_TUPLE)           \
+    {                                                                         \
+      vnet_flow_ip##OUTER_IP_VER##_ip##INNER_IP_VER##_n_tuple_t *ptr =        \
+	&f->ip##OUTER_IP_VER##_ip##INNER_IP_VER##_n_tuple;                    \
+      switch (ptr->in_protocol.prot)                                          \
+	{                                                                     \
+	case IP_PROTOCOL_UDP:                                                 \
+	  fill_inner_n_tuple_of (UDP) break;                                  \
+	case IP_PROTOCOL_TCP:                                                 \
+	  fill_inner_n_tuple_of (TCP) break;                                  \
+	default:                                                              \
+	  break;                                                              \
+	}                                                                     \
+    }
+      fill_inner_n_tuple (6, 4) fill_inner_n_tuple (4, 4)
+	fill_inner_n_tuple (6, 6) fill_inner_n_tuple (4, 6)
+#undef fill_inner_n_tuple
+#undef fill_inner_n_tuple_of
+    }
+
 pattern_end:
   if ((f->actions & VNET_FLOW_ACTION_RSS) &&
       (f->rss_types & (1ULL << VNET_FLOW_RSS_TYPES_ESP)))
@@ -692,6 +813,14 @@ dpdk_flow_ops_fn (vnet_main_t * vnm, vnet_flow_dev_op_t op, u32 dev_instance,
     case VNET_FLOW_TYPE_IP4_L2TPV3OIP:
     case VNET_FLOW_TYPE_IP4_IPSEC_ESP:
     case VNET_FLOW_TYPE_IP4_IPSEC_AH:
+    case VNET_FLOW_TYPE_IP4_IP4:
+    case VNET_FLOW_TYPE_IP4_IP4_N_TUPLE:
+    case VNET_FLOW_TYPE_IP4_IP6:
+    case VNET_FLOW_TYPE_IP4_IP6_N_TUPLE:
+    case VNET_FLOW_TYPE_IP6_IP4:
+    case VNET_FLOW_TYPE_IP6_IP4_N_TUPLE:
+    case VNET_FLOW_TYPE_IP6_IP6:
+    case VNET_FLOW_TYPE_IP6_IP6_N_TUPLE:
     case VNET_FLOW_TYPE_GENERIC:
       if ((rv = dpdk_flow_add (xd, flow, fe)))
 	goto done;