octeon: add flow offload infra

Type: feature

Change-Id: I3485e1627eafc5125255985003573247e7562db2
Signed-off-by: Kommula Shiva Shankar <kshankar@marvell.com>
Signed-off-by: Monendra Singh Kushwaha <kmonendra@marvell.com>

1 files changed, 505 insertions, 0 deletions

diff --git a/src/plugins/dev_octeon/flow.c b/src/plugins/dev_octeon/flow.c
new file mode 100644
index 00000000000..1c367a036ab
--- /dev/null
+++ b/src/plugins/dev_octeon/flow.c
@@ -0,0 +1,505 @@
+/*
+ * Copyright (c) 2024 Marvell.
+ * SPDX-License-Identifier: Apache-2.0
+ * https://spdx.org/licenses/Apache-2.0.html
+ */
+
+#include <dev_octeon/octeon.h>
+#include <base/roc_npc_priv.h>
+
+VLIB_REGISTER_LOG_CLASS (oct_log, static) = {
+  .class_name = "octeon",
+  .subclass_name = "flow",
+};
+
+#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_L3_TYPE(f)                                                    \
+  ((f->type == VNET_FLOW_TYPE_IP4) || (f->type == VNET_FLOW_TYPE_IP6))
+
+#define FLOW_IS_L4_TYPE(f)                                                    \
+  ((f->type == VNET_FLOW_TYPE_IP4_N_TUPLE) ||                                 \
+   (f->type == VNET_FLOW_TYPE_IP6_N_TUPLE) ||                                 \
+   (f->type == VNET_FLOW_TYPE_IP4_N_TUPLE_TAGGED) ||                          \
+   (f->type == VNET_FLOW_TYPE_IP6_N_TUPLE_TAGGED))
+
+#define FLOW_IS_L4_TUNNEL_TYPE(f)                                             \
+  ((f->type == VNET_FLOW_TYPE_IP4_VXLAN) ||                                   \
+   (f->type == VNET_FLOW_TYPE_IP6_VXLAN) ||                                   \
+   (f->type == VNET_FLOW_TYPE_IP4_GTPC) ||                                    \
+   (f->type == VNET_FLOW_TYPE_IP4_GTPU))
+
+#define OCT_FLOW_UNSUPPORTED_ACTIONS(f)                                       \
+  ((f->actions == VNET_FLOW_ACTION_BUFFER_ADVANCE) ||                         \
+   (f->actions == VNET_FLOW_ACTION_REDIRECT_TO_NODE))
+
+/* Keep values in sync with vnet/flow.h */
+#define foreach_oct_flow_rss_types                                            \
+  _ (1, FLOW_KEY_TYPE_IPV4 | FLOW_KEY_TYPE_TCP, "ipv4-tcp")                   \
+  _ (2, FLOW_KEY_TYPE_IPV4 | FLOW_KEY_TYPE_UDP, "ipv4-udp")                   \
+  _ (3, FLOW_KEY_TYPE_IPV4 | FLOW_KEY_TYPE_SCTP, "ipv4-sctp")                 \
+  _ (5, FLOW_KEY_TYPE_IPV4, "ipv4")                                           \
+  _ (9, FLOW_KEY_TYPE_IPV6 | FLOW_KEY_TYPE_TCP, "ipv6-tcp")                   \
+  _ (10, FLOW_KEY_TYPE_IPV6 | FLOW_KEY_TYPE_UDP, "ipv6-udp")                  \
+  _ (11, FLOW_KEY_TYPE_IPV6 | FLOW_KEY_TYPE_SCTP, "ipv6-sctp")                \
+  _ (13, FLOW_KEY_TYPE_IPV6_EXT, "ipv6-ex")                                   \
+  _ (14, FLOW_KEY_TYPE_IPV6, "ipv6")                                          \
+  _ (16, FLOW_KEY_TYPE_PORT, "port")                                          \
+  _ (17, FLOW_KEY_TYPE_VXLAN, "vxlan")                                        \
+  _ (18, FLOW_KEY_TYPE_GENEVE, "geneve")                                      \
+  _ (19, FLOW_KEY_TYPE_NVGRE, "nvgre")                                        \
+  _ (20, FLOW_KEY_TYPE_GTPU, "gtpu")                                          \
+  _ (60, FLOW_KEY_TYPE_L4_DST, "l4-dst-only")                                 \
+  _ (61, FLOW_KEY_TYPE_L4_SRC, "l4-src-only")                                 \
+  _ (62, FLOW_KEY_TYPE_L3_DST, "l3-dst-only")                                 \
+  _ (63, FLOW_KEY_TYPE_L3_SRC, "l3-src-only")
+
+typedef struct
+{
+  u16 src_port;
+  u16 dst_port;
+  u32 verification_tag;
+  u32 cksum;
+} sctp_header_t;
+
+typedef struct
+{
+  u8 ver_flags;
+  u8 type;
+  u16 length;
+  u32 teid;
+} gtpu_header_t;
+
+static void
+oct_flow_convert_rss_types (u64 *key, u64 rss_types)
+{
+#define _(a, b, c)                                                            \
+  if (rss_types & (1UL << a))                                                 \
+    *key |= b;
+
+  foreach_oct_flow_rss_types
+#undef _
+
+    return;
+}
+
+vnet_dev_rv_t
+oct_flow_validate_params (vlib_main_t *vm, vnet_dev_port_t *port,
+			  vnet_dev_port_cfg_type_t type, u32 flow_index,
+			  uword *priv_data)
+{
+  vnet_flow_t *flow = vnet_get_flow (flow_index);
+  u32 last_queue;
+  u32 qid;
+
+  if (type == VNET_DEV_PORT_CFG_GET_RX_FLOW_COUNTER ||
+      type == VNET_DEV_PORT_CFG_RESET_RX_FLOW_COUNTER)
+    {
+      log_err (port->dev, "Unsupported request type");
+      return VNET_DEV_ERR_NOT_SUPPORTED;
+    }
+
+  if (OCT_FLOW_UNSUPPORTED_ACTIONS (flow))
+    {
+      log_err (port->dev, "Unsupported flow action");
+      return VNET_DEV_ERR_NOT_SUPPORTED;
+    }
+
+  if (flow->actions & VNET_FLOW_ACTION_REDIRECT_TO_QUEUE)
+    {
+      qid = flow->redirect_queue;
+      if (qid > port->intf.num_rx_queues - 1 || qid < 0)
+	{
+	  log_err (port->dev,
+		   "Given Q(%d) is invalid, supported range is %d-%d", qid, 0,
+		   port->intf.num_rx_queues - 1);
+	  return VNET_DEV_ERR_NOT_SUPPORTED;
+	}
+    }
+
+  if (flow->actions & VNET_FLOW_ACTION_RSS)
+    {
+      last_queue = flow->queue_index + flow->queue_num;
+      if (last_queue > port->intf.num_rx_queues - 1)
+	{
+	  log_err (port->dev,
+		   "Given Q range(%d-%d) is invalid, supported range is %d-%d",
+		   flow->queue_index, flow->queue_index + flow->queue_num, 0,
+		   port->intf.num_rx_queues - 1);
+	  return VNET_DEV_ERR_NOT_SUPPORTED;
+	}
+    }
+  return VNET_DEV_OK;
+}
+
+static vnet_dev_rv_t
+oct_flow_rule_create (vnet_dev_port_t *port, struct roc_npc_action *actions,
+		      struct roc_npc_item_info *item_info, vnet_flow_t *flow,
+		      uword *private_data)
+{
+  oct_port_t *oct_port = vnet_dev_get_port_data (port);
+  struct roc_npc_attr attr = { .priority = 1, .ingress = 1 };
+  struct roc_npc_flow *npc_flow;
+  oct_flow_entry_t *flow_entry;
+  struct roc_npc *npc;
+  int rv = 0;
+
+  npc = &oct_port->npc;
+
+  npc_flow =
+    roc_npc_flow_create (npc, &attr, item_info, actions, npc->pf_func, &rv);
+  if (rv)
+    {
+      log_err (port->dev, "roc_npc_flow_create failed with '%s' error",
+	       roc_error_msg_get (rv));
+      return VNET_DEV_ERR_NOT_SUPPORTED;
+    }
+  roc_npc_mcam_clear_counter (npc, npc_flow->ctr_id);
+
+  pool_get_zero (oct_port->flow_entries, flow_entry);
+  flow_entry->index = flow_entry - oct_port->flow_entries;
+  flow_entry->vnet_flow_index = flow->index;
+  flow_entry->npc_flow = npc_flow;
+
+  *private_data = flow_entry->index;
+
+  return VNET_DEV_OK;
+}
+
+static vnet_dev_rv_t
+oct_flow_add (vlib_main_t *vm, vnet_dev_port_t *port, vnet_flow_t *flow,
+	      uword *private_data)
+{
+  struct roc_npc_item_info item_info[ROC_NPC_ITEM_TYPE_END] = {};
+  struct roc_npc_action actions[ROC_NPC_ITEM_TYPE_END] = {};
+  oct_port_t *oct_port = vnet_dev_get_port_data (port);
+  u16 l4_src_port = 0, l4_dst_port = 0;
+  u16 l4_src_mask = 0, l4_dst_mask = 0;
+  struct roc_npc_action_rss rss_conf = {};
+  struct roc_npc_action_queue conf = {};
+  struct roc_npc_action_mark mark = {};
+  struct roc_npc *npc = &oct_port->npc;
+  vnet_dev_rv_t rv = VNET_DEV_OK;
+  int layer = 0, index = 0;
+  u16 *queues = NULL;
+  u64 flow_key = 0;
+  u8 proto = 0;
+  u16 action = 0;
+
+  if (FLOW_IS_ETHERNET_CLASS (flow))
+    {
+      ethernet_header_t eth_spec = { .type = clib_host_to_net_u16 (
+				       flow->ethernet.eth_hdr.type) },
+			eth_mask = { .type = 0xFFFF };
+
+      item_info[layer].spec = (void *) &eth_spec;
+      item_info[layer].mask = (void *) &eth_mask;
+      item_info[layer].size = sizeof (ethernet_header_t);
+      item_info[layer].type = ROC_NPC_ITEM_TYPE_ETH;
+      layer++;
+    }
+
+  else if (FLOW_IS_IPV4_CLASS (flow))
+    {
+      vnet_flow_ip4_t *ip4_hdr = &flow->ip4;
+      proto = ip4_hdr->protocol.prot;
+      ip4_header_t ip4_spec = { .src_address = ip4_hdr->src_addr.addr,
+				.dst_address = ip4_hdr->dst_addr.addr },
+		   ip4_mask = { .src_address = ip4_hdr->src_addr.mask,
+				.dst_address = ip4_hdr->dst_addr.mask };
+
+      item_info[layer].spec = (void *) &ip4_spec;
+      item_info[layer].mask = (void *) &ip4_mask;
+      item_info[layer].size = sizeof (ip4_header_t);
+      item_info[layer].type = ROC_NPC_ITEM_TYPE_IPV4;
+      layer++;
+
+      if (FLOW_IS_L4_TYPE (flow))
+	{
+	  vnet_flow_ip4_n_tuple_t *ip4_tuple_hdr = &flow->ip4_n_tuple;
+
+	  l4_src_port = clib_host_to_net_u16 (ip4_tuple_hdr->src_port.port);
+	  l4_dst_port = clib_host_to_net_u16 (ip4_tuple_hdr->dst_port.port);
+	  l4_src_mask = clib_host_to_net_u16 (ip4_tuple_hdr->src_port.mask);
+	  l4_dst_mask = clib_host_to_net_u16 (ip4_tuple_hdr->dst_port.mask);
+	}
+    }
+  else if (FLOW_IS_IPV6_CLASS (flow))
+    {
+      vnet_flow_ip6_t *ip6_hdr = &flow->ip6;
+      proto = ip6_hdr->protocol.prot;
+      ip6_header_t ip6_spec = { .src_address = ip6_hdr->src_addr.addr,
+				.dst_address = ip6_hdr->dst_addr.addr },
+		   ip6_mask = { .src_address = ip6_hdr->src_addr.mask,
+				.dst_address = ip6_hdr->dst_addr.mask };
+
+      item_info[layer].spec = (void *) &ip6_spec;
+      item_info[layer].mask = (void *) &ip6_mask;
+      item_info[layer].size = sizeof (ip6_header_t);
+      item_info[layer].type = ROC_NPC_ITEM_TYPE_IPV6;
+      layer++;
+
+      if (FLOW_IS_L4_TYPE (flow))
+	{
+	  vnet_flow_ip6_n_tuple_t *ip6_tuple_hdr = &flow->ip6_n_tuple;
+
+	  l4_src_port = clib_host_to_net_u16 (ip6_tuple_hdr->src_port.port);
+	  l4_dst_port = clib_host_to_net_u16 (ip6_tuple_hdr->dst_port.port);
+	  l4_src_mask = clib_host_to_net_u16 (ip6_tuple_hdr->src_port.mask);
+	  l4_dst_mask = clib_host_to_net_u16 (ip6_tuple_hdr->dst_port.mask);
+	}
+    }
+
+  if (!proto)
+    goto end_item_info;
+
+  switch (proto)
+    {
+    case IP_PROTOCOL_UDP:
+      item_info[layer].type = ROC_NPC_ITEM_TYPE_UDP;
+
+      udp_header_t udp_spec = { .src_port = l4_src_port,
+				.dst_port = l4_dst_port },
+		   udp_mask = { .src_port = l4_src_mask,
+				.dst_port = l4_dst_mask };
+
+      item_info[layer].spec = (void *) &udp_spec;
+      item_info[layer].mask = (void *) &udp_mask;
+      item_info[layer].size = sizeof (udp_header_t);
+      layer++;
+
+      if (FLOW_IS_L4_TUNNEL_TYPE (flow))
+	{
+	  switch (flow->type)
+	    {
+	    case VNET_FLOW_TYPE_IP4_GTPU:
+	      item_info[layer].type = ROC_NPC_ITEM_TYPE_GTPU;
+	      gtpu_header_t gtpu_spec = { .teid = clib_host_to_net_u32 (
+					    flow->ip4_gtpu.teid) },
+			    gtpu_mask = { .teid = 0XFFFFFFFF };
+
+	      item_info[layer].spec = (void *) &gtpu_spec;
+	      item_info[layer].mask = (void *) &gtpu_mask;
+	      item_info[layer].size = sizeof (gtpu_header_t);
+	      layer++;
+	      break;
+
+	    default:
+	      log_err (port->dev, "Unsupported L4 tunnel type");
+	      return VNET_DEV_ERR_NOT_SUPPORTED;
+	    }
+	} /* FLOW_IS_L4_TUNNEL_TYPE */
+      break;
+
+    case IP_PROTOCOL_TCP:
+      item_info[layer].type = ROC_NPC_ITEM_TYPE_TCP;
+
+      tcp_header_t tcp_spec = { .src_port = l4_src_port,
+				.dst_port = l4_dst_port },
+		   tcp_mask = { .src_port = l4_src_mask,
+				.dst_port = l4_dst_mask };
+
+      item_info[layer].spec = (void *) &tcp_spec;
+      item_info[layer].mask = (void *) &tcp_mask;
+      item_info[layer].size = sizeof (tcp_header_t);
+      layer++;
+      break;
+
+    case IP_PROTOCOL_SCTP:
+      item_info[layer].type = ROC_NPC_ITEM_TYPE_SCTP;
+
+      sctp_header_t sctp_spec = { .src_port = l4_src_port,
+				  .dst_port = l4_dst_port },
+		    sctp_mask = { .src_port = l4_src_mask,
+				  .dst_port = l4_dst_mask };
+
+      item_info[layer].spec = (void *) &sctp_spec;
+      item_info[layer].mask = (void *) &sctp_mask;
+      item_info[layer].size = sizeof (sctp_header_t);
+      layer++;
+      break;
+
+    case IP_PROTOCOL_IPSEC_ESP:
+      item_info[layer].type = ROC_NPC_ITEM_TYPE_ESP;
+      esp_header_t esp_spec = { .spi = clib_host_to_net_u32 (
+				  flow->ip4_ipsec_esp.spi) },
+		   esp_mask = { .spi = 0xFFFFFFFF };
+
+      item_info[layer].spec = (void *) &esp_spec;
+      item_info[layer].mask = (void *) &esp_mask;
+      item_info[layer].size = sizeof (u32);
+      layer++;
+      break;
+
+    default:
+      log_err (port->dev, "Unsupported IP protocol '%U'", format_ip_protocol,
+	       proto);
+      return VNET_DEV_ERR_NOT_SUPPORTED;
+    }
+
+end_item_info:
+  item_info[layer].type = ROC_NPC_ITEM_TYPE_END;
+
+  if (flow->actions & VNET_FLOW_ACTION_REDIRECT_TO_QUEUE)
+    {
+      conf.index = flow->redirect_queue;
+      actions[action].type = ROC_NPC_ACTION_TYPE_QUEUE;
+      actions[action].conf = &conf;
+      action++;
+    }
+
+  else if (flow->actions & VNET_FLOW_ACTION_DROP)
+    {
+      actions[action].type = ROC_NPC_ACTION_TYPE_DROP;
+      action++;
+    }
+
+  else if (flow->actions & VNET_FLOW_ACTION_RSS)
+    {
+      if (!flow->queue_num)
+	{
+	  log_err (port->dev, "RSS action has no queues");
+	  return VNET_DEV_ERR_NOT_SUPPORTED;
+	}
+      queues = clib_mem_alloc (sizeof (u16) * port->intf.num_rx_queues);
+
+      for (index = 0; index < flow->queue_num; index++)
+	queues[index] = flow->queue_index++;
+
+      oct_flow_convert_rss_types (&flow_key, flow->rss_types);
+      if (!flow_key)
+	{
+	  log_err (port->dev, "Invalid RSS hash function");
+	  return VNET_DEV_ERR_NOT_SUPPORTED;
+	}
+      npc->flowkey_cfg_state = flow_key;
+      rss_conf.queue_num = flow->queue_num;
+      rss_conf.queue = queues;
+
+      actions[action].type = ROC_NPC_ACTION_TYPE_RSS;
+      actions[action].conf = &rss_conf;
+      action++;
+    }
+
+  if (flow->actions & VNET_FLOW_ACTION_MARK)
+    {
+      if (flow->mark_flow_id == 0 ||
+	  flow->mark_flow_id > (NPC_FLOW_FLAG_VAL - 2))
+	{
+	  log_err (port->dev, "mark flow id must be > 0 and < 0xfffe");
+	  return VNET_DEV_ERR_NOT_SUPPORTED;
+	}
+      /* RoC library adds 1 to id, so subtract 1 */
+      mark.id = flow->mark_flow_id - 1;
+      actions[action].type = ROC_NPC_ACTION_TYPE_MARK;
+      actions[action].conf = &mark;
+      action++;
+    }
+
+  /* make count as default action */
+  actions[action].type = ROC_NPC_ACTION_TYPE_COUNT;
+  actions[action + 1].type = ROC_NPC_ACTION_TYPE_END;
+
+  rv = oct_flow_rule_create (port, actions, item_info, flow, private_data);
+
+  if (queues)
+    clib_mem_free (queues);
+
+  return rv;
+}
+
+static vnet_dev_rv_t
+oct_flow_del (vlib_main_t *vm, vnet_dev_port_t *port, vnet_flow_t *flow,
+	      uword *private_data)
+{
+  oct_port_t *oct_port = vnet_dev_get_port_data (port);
+  struct roc_npc *npc = &oct_port->npc;
+  struct roc_npc_flow *npc_flow;
+  oct_flow_entry_t *flow_entry;
+  int rv = 0, index;
+
+  index = *private_data;
+  flow_entry = pool_elt_at_index (oct_port->flow_entries, index);
+  npc_flow = flow_entry->npc_flow;
+  rv = roc_npc_flow_destroy (npc, npc_flow);
+  if (rv)
+    {
+      log_err (port->dev, "roc_npc_flow_destroy failed with '%s' error",
+	       roc_error_msg_get (rv));
+      return VNET_DEV_ERR_NOT_SUPPORTED;
+    }
+  pool_put (oct_port->flow_entries, flow_entry);
+
+  return VNET_DEV_OK;
+}
+
+vnet_dev_rv_t
+oct_flow_query (vlib_main_t *vm, vnet_dev_port_t *port, u32 flow_index,
+		uword private_data, u64 *hits)
+{
+  oct_port_t *oct_port = vnet_dev_get_port_data (port);
+  struct roc_npc *npc = &oct_port->npc;
+  struct roc_npc_flow *npc_flow;
+  oct_flow_entry_t *flow_entry;
+  i32 flow_count;
+  int rv = 0;
+
+  flow_count = pool_elts (oct_port->flow_entries);
+  if (!flow_count)
+    {
+      log_err (port->dev, "Flow entry pool is empty");
+      return VNET_DEV_ERR_NOT_SUPPORTED;
+    }
+
+  flow_entry = pool_elt_at_index (oct_port->flow_entries, private_data);
+  npc_flow = flow_entry->npc_flow;
+  if (npc_flow->ctr_id == NPC_COUNTER_NONE)
+    {
+      log_err (port->dev, "Counters are not available for given flow id (%u)",
+	       flow_index);
+      return VNET_DEV_ERR_NOT_SUPPORTED;
+    }
+
+  rv = roc_npc_mcam_read_counter (npc, npc_flow->ctr_id, hits);
+  if (rv != 0)
+    {
+      log_err (port->dev, "Error reading flow counter for given flow id (%u)",
+	       flow_index);
+      return VNET_DEV_ERR_INTERNAL;
+    }
+
+  return VNET_DEV_OK;
+}
+
+vnet_dev_rv_t
+oct_flow_ops_fn (vlib_main_t *vm, vnet_dev_port_t *port,
+		 vnet_dev_port_cfg_type_t type, u32 flow_index,
+		 uword *priv_data)
+{
+  vnet_flow_t *flow = vnet_get_flow (flow_index);
+
+  if (type == VNET_DEV_PORT_CFG_ADD_RX_FLOW)
+    return oct_flow_add (vm, port, flow, priv_data);
+
+  if (type == VNET_DEV_PORT_CFG_DEL_RX_FLOW)
+    return oct_flow_del (vm, port, flow, priv_data);
+
+  return VNET_DEV_ERR_NOT_SUPPORTED;
+}