The implementation of VxLAN tunnel filter in librte_pmd_i40e, which include
 - add the i40e_dev_filter_ctrl() function.
 - add the i40e_dev_tunnel_filter_set() function.

Signed-off-by: Jijiang Liu <jijiang.liu at intel.com>
Acked-by: Helin Zhang <helin.zhang at intel.com>
Acked-by: Jingjing Wu <jingjing.wu at intel.com>
Acked-by: Jing Chen <jing.d.chen at intel.com>

---
 lib/librte_pmd_i40e/i40e_ethdev.c |  205 +++++++++++++++++++++++++++++++++++++
 1 files changed, 205 insertions(+), 0 deletions(-)

diff --git a/lib/librte_pmd_i40e/i40e_ethdev.c 
b/lib/librte_pmd_i40e/i40e_ethdev.c
index 4234073..8adf04b 100644
--- a/lib/librte_pmd_i40e/i40e_ethdev.c
+++ b/lib/librte_pmd_i40e/i40e_ethdev.c
@@ -48,6 +48,7 @@
 #include <rte_malloc.h>
 #include <rte_memcpy.h>
 #include <rte_dev.h>
+#include <rte_eth_ctrl.h>

 #include "i40e_logs.h"
 #include "i40e/i40e_register_x710_int.h"
@@ -211,7 +212,13 @@ static int i40e_dev_udp_tunnel_add(struct rte_eth_dev *dev,
 static int i40e_dev_udp_tunnel_del(struct rte_eth_dev *dev,
                                   struct rte_eth_udp_tunnel *udp_tunnel,
                                   uint8_t count);
+static int i40e_dev_tunnel_filter_set(struct i40e_pf *pf,
+                            struct rte_eth_tunnel_filter_conf *tunnel_filter,
+                            uint8_t add);
 static int i40e_pf_config_vxlan(struct i40e_pf *pf);
+static int i40e_dev_filter_ctrl(struct rte_eth_dev *dev,
+                              enum rte_filter_type filter_type,
+                              enum rte_filter_op filter_op, void *arg);


 /* Default hash key buffer for RSS */
@@ -266,6 +273,7 @@ static struct eth_dev_ops i40e_eth_dev_ops = {
        .rss_hash_conf_get            = i40e_dev_rss_hash_conf_get,
        .udp_tunnel_add               = i40e_dev_udp_tunnel_add,
        .udp_tunnel_del               = i40e_dev_udp_tunnel_del,
+       .filter_ctrl                  = i40e_dev_filter_ctrl,
 };

 static struct eth_driver rte_i40e_pmd = {
@@ -4121,6 +4129,110 @@ i40e_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
 }

 static int
+i40e_dev_get_filter_type(enum rte_tunnel_filter_type filter_type,
+                       uint16_t *flag)
+{
+       switch (filter_type) {
+       case RTE_TUNNEL_FILTER_IMAC_IVLAN:
+               *flag = I40E_AQC_ADD_CLOUD_FILTER_IMAC_IVLAN;
+               break;
+       case RTE_TUNNEL_FILTER_IMAC_IVLAN_TENID:
+               *flag = I40E_AQC_ADD_CLOUD_FILTER_IMAC_IVLAN_TEN_ID;
+               break;
+       case RTE_TUNNEL_FILTER_IMAC_TENID:
+               *flag = I40E_AQC_ADD_CLOUD_FILTER_IMAC_TEN_ID;
+               break;
+       case RTE_TUNNEL_FILTER_OMAC_TENID_IMAC:
+               *flag = I40E_AQC_ADD_CLOUD_FILTER_OMAC_TEN_ID_IMAC;
+               break;
+       case RTE_TUNNEL_FILTER_IMAC:
+               *flag = I40E_AQC_ADD_CLOUD_FILTER_IMAC;
+               break;
+       default:
+               PMD_DRV_LOG(ERR, "invalid tunnel filter type\n");
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int
+i40e_dev_tunnel_filter_set(struct i40e_pf *pf,
+                       struct rte_eth_tunnel_filter_conf *tunnel_filter,
+                       uint8_t add)
+{
+       uint16_t ip_type;
+       uint8_t tun_type = 0;
+       int ret = 0;
+       int val;
+       struct i40e_hw *hw = I40E_PF_TO_HW(pf);
+       struct i40e_vsi *vsi = pf->main_vsi;
+       struct i40e_aqc_add_remove_cloud_filters_element_data  *cld_filter;
+       struct i40e_aqc_add_remove_cloud_filters_element_data  *pfilter;
+
+       cld_filter = rte_zmalloc("tunnel_filter",
+               sizeof(struct i40e_aqc_add_remove_cloud_filters_element_data),
+               0);
+
+       if (NULL == cld_filter) {
+               PMD_DRV_LOG(ERR, "Failed to alloc memory.\n");
+               return -EINVAL;
+       }
+       pfilter = cld_filter;
+
+       (void)rte_memcpy(&pfilter->outer_mac, tunnel_filter->outer_mac,
+                       sizeof(struct ether_addr));
+       (void)rte_memcpy(&pfilter->inner_mac, tunnel_filter->inner_mac,
+                       sizeof(struct ether_addr));
+
+       pfilter->inner_vlan = tunnel_filter->inner_vlan;
+       if (tunnel_filter->ip_type == RTE_TUNNEL_IPTYPE_IPV4) {
+               ip_type = I40E_AQC_ADD_CLOUD_FLAGS_IPV4;
+               (void)rte_memcpy(&pfilter->ipaddr.v4.data,
+                               &tunnel_filter->ip_addr,
+                               sizeof(pfilter->ipaddr.v4.data));
+       } else {
+               ip_type = I40E_AQC_ADD_CLOUD_FLAGS_IPV6;
+               (void)rte_memcpy(&pfilter->ipaddr.v6.data,
+                               &tunnel_filter->ip_addr,
+                               sizeof(pfilter->ipaddr.v6.data));
+       }
+
+       /* check tunnel type */
+       switch (tunnel_filter->tunnel_type) {
+       case RTE_TUNNEL_TYPE_VXLAN:
+               tun_type = I40E_AQC_ADD_CLOUD_TNL_TYPE_XVLAN;
+               break;
+       default:
+               /* Other tunnel types is not supported. */
+               PMD_DRV_LOG(ERR, "tunnel type is not supported.\n");
+               rte_free(cld_filter);
+               return -EINVAL;
+       }
+
+       val = i40e_dev_get_filter_type(tunnel_filter->filter_type,
+                                               &pfilter->flags);
+       if (val < 0) {
+               rte_free(cld_filter);
+               return -EINVAL;
+       }
+
+       pfilter->flags |= I40E_AQC_ADD_CLOUD_FLAGS_TO_QUEUE | ip_type |
+               (tun_type << I40E_AQC_ADD_CLOUD_TNL_TYPE_SHIFT);
+       pfilter->tenant_id = tunnel_filter->tenant_id;
+       pfilter->queue_number = tunnel_filter->queue_id;
+
+       if (add)
+               ret = i40e_aq_add_cloud_filters(hw, vsi->seid, cld_filter, 1);
+       else
+               ret = i40e_aq_remove_cloud_filters(hw, vsi->seid,
+                                               cld_filter, 1);
+
+       rte_free(cld_filter);
+       return ret;
+}
+
+static int
 i40e_get_vxlan_port_idx(struct i40e_pf *pf, uint16_t port)
 {
        uint8_t i;
@@ -4311,6 +4423,99 @@ i40e_pf_config_vxlan(struct i40e_pf *pf)
 }

 static int
+i40e_tunnel_filter_param_check(struct i40e_pf *pf,
+                       struct rte_eth_tunnel_filter_conf *filter)
+{
+       if (pf == NULL || filter == NULL) {
+               PMD_DRV_LOG(ERR, "Invalid parameter\n");
+               return -EINVAL;
+       }
+
+       if (filter->queue_id >= pf->dev_data->nb_rx_queues) {
+               PMD_DRV_LOG(ERR, "Invalid queue ID\n");
+               return -EINVAL;
+       }
+
+       if (filter->inner_vlan > ETHER_MAX_VLAN_ID) {
+               PMD_DRV_LOG(ERR, "Invalid inner VLAN ID\n");
+               return -EINVAL;
+       }
+
+       if ((filter->filter_type & ETH_TUNNEL_FILTER_OMAC) &&
+               (is_zero_ether_addr(filter->outer_mac))) {
+               PMD_DRV_LOG(ERR, "Cannot add NULL outer MAC address\n");
+               return -EINVAL;
+       }
+
+       if ((filter->filter_type & ETH_TUNNEL_FILTER_IMAC) &&
+               (is_zero_ether_addr(filter->inner_mac))) {
+               PMD_DRV_LOG(ERR, "Cannot add NULL inner MAC address\n");
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int
+i40e_tunnel_filter_handle(struct i40e_pf *pf, enum rte_filter_op filter_op,
+                       void *arg)
+{
+       struct rte_eth_tunnel_filter_conf *filter;
+       int ret = I40E_SUCCESS;
+       uint8_t add = 1;
+
+       filter = (struct rte_eth_tunnel_filter_conf *)(arg);
+
+       if (i40e_tunnel_filter_param_check(pf, filter) < 0)
+               return I40E_ERR_PARAM;
+
+       switch (filter_op) {
+       case RTE_ETH_FILTER_OP_NONE:
+               if (!(pf->flags & I40E_FLAG_VXLAN))
+                       ret = I40E_NOT_SUPPORTED;
+       case RTE_ETH_FILTER_OP_ADD:
+               ret = i40e_dev_tunnel_filter_set(pf, filter, add);
+               break;
+       case RTE_ETH_FILTER_OP_DELETE:
+               add = 0;
+               ret = i40e_dev_tunnel_filter_set(pf, filter, add);
+               break;
+       default:
+               PMD_DRV_LOG(ERR, "unknown operation %u\n", filter_op);
+               ret = I40E_ERR_PARAM;
+               break;
+       }
+
+       return ret;
+}
+
+/*
+ * Take operations to assigned filter type on NIC.
+ */
+static int
+i40e_dev_filter_ctrl(struct rte_eth_dev *dev, enum rte_filter_type filter_type,
+                    enum rte_filter_op filter_op, void *arg) {
+
+       struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
+       int ret = 0;
+
+       if (arg == NULL && filter_op != RTE_ETH_FILTER_OP_NONE)
+               return -EINVAL;
+
+       switch (filter_type) {
+       case RTE_ETH_FILTER_TUNNEL:
+               ret = i40e_tunnel_filter_handle(pf, filter_op, arg);
+               break;
+       default:
+               PMD_DRV_LOG(ERR, "unsupported filter type %u\n", filter_type);
+               ret = -EINVAL;
+               break;
+       }
+
+       return ret;
+}
+
+static int
 i40e_pf_config_mq_rx(struct i40e_pf *pf)
 {
        if (!pf->dev_data->sriov.active) {
-- 
1.7.7.6

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