net/bnxt: add access to NAT global register

[dpdk.git] / drivers / net / bnxt / tf_ulp / bnxt_ulp.c

diff --git a/drivers/net/bnxt/tf_ulp/bnxt_ulp.c b/drivers/net/bnxt/tf_ulp/bnxt_ulp.c
index 0869231..7c65a4b 100644 (file)
--- a/drivers/net/bnxt/tf_ulp/bnxt_ulp.c
+++ b/drivers/net/bnxt/tf_ulp/bnxt_ulp.c
@@ -596,6 +596,52 @@ ulp_session_deinit(struct bnxt_ulp_session_state *session)
        }
 }
 
+/*
+ * Internal api to enable NAT feature.
+ * Set set_flag to 1 to set the value or zero to reset the value.
+ * returns 0 on success.
+ */
+static int32_t
+bnxt_ulp_global_cfg_update(struct bnxt *bp,
+                          enum tf_dir dir,
+                          enum tf_global_config_type type,
+                          uint32_t offset,
+                          uint32_t value,
+                          uint32_t set_flag)
+{
+       uint32_t global_cfg = 0;
+       int rc;
+       struct tf_global_cfg_parms parms;
+
+       /* Initialize the params */
+       parms.dir = dir,
+       parms.type = type,
+       parms.offset = offset,
+       parms.config = (uint8_t *)&global_cfg,
+       parms.config_sz_in_bytes = sizeof(global_cfg);
+
+       rc = tf_get_global_cfg(&bp->tfp, &parms);
+       if (rc) {
+               BNXT_TF_DBG(ERR, "Failed to get global cfg 0x%x rc:%d\n",
+                           type, rc);
+               return rc;
+       }
+
+       if (set_flag)
+               global_cfg |= value;
+       else
+               global_cfg &= ~value;
+
+       /* SET the register RE_CFA_REG_ACT_TECT */
+       rc = tf_set_global_cfg(&bp->tfp, &parms);
+       if (rc) {
+               BNXT_TF_DBG(ERR, "Failed to set global cfg 0x%x rc:%d\n",
+                           type, rc);
+               return rc;
+       }
+       return rc;
+}
+
 /*
  * When a port is initialized by dpdk. This functions is called
  * and this function initializes the ULP context and rest of the
@@ -732,6 +778,29 @@ bnxt_ulp_init(struct bnxt *bp)
                goto jump_to_error;
        }
 
+       /*
+        * Enable NAT feature. Set the global configuration register
+        * Tunnel encap to enable NAT with the reuse of existing inner
+        * L2 header smac and dmac
+        */
+       rc = bnxt_ulp_global_cfg_update(bp, TF_DIR_RX, TF_TUNNEL_ENCAP,
+                                       TF_TUNNEL_ENCAP_NAT,
+                                       (BNXT_ULP_NAT_INNER_L2_HEADER_SMAC |
+                                       BNXT_ULP_NAT_INNER_L2_HEADER_DMAC), 1);
+       if (rc) {
+               BNXT_TF_DBG(ERR, "Failed to set rx global configuration\n");
+               goto jump_to_error;
+       }
+
+       rc = bnxt_ulp_global_cfg_update(bp, TF_DIR_TX, TF_TUNNEL_ENCAP,
+                                       TF_TUNNEL_ENCAP_NAT,
+                                       (BNXT_ULP_NAT_INNER_L2_HEADER_SMAC |
+                                       BNXT_ULP_NAT_INNER_L2_HEADER_DMAC), 1);
+       if (rc) {
+               BNXT_TF_DBG(ERR, "Failed to set tx global configuration\n");
+               goto jump_to_error;
+       }
+
        return rc;
 
 jump_to_error:
@@ -785,6 +854,19 @@ bnxt_ulp_deinit(struct bnxt *bp)
        /* Delete the Port database */
        ulp_port_db_deinit(bp->ulp_ctx);
 
+       /* Disable NAT feature */
+       (void)bnxt_ulp_global_cfg_update(bp, TF_DIR_RX, TF_TUNNEL_ENCAP,
+                                        TF_TUNNEL_ENCAP_NAT,
+                                        (BNXT_ULP_NAT_INNER_L2_HEADER_SMAC |
+                                         BNXT_ULP_NAT_INNER_L2_HEADER_DMAC),
+                                        0);
+
+       (void)bnxt_ulp_global_cfg_update(bp, TF_DIR_TX, TF_TUNNEL_ENCAP,
+                                        TF_TUNNEL_ENCAP_NAT,
+                                        (BNXT_ULP_NAT_INNER_L2_HEADER_SMAC |
+                                         BNXT_ULP_NAT_INNER_L2_HEADER_DMAC),
+                                        0);
+
        /* Delete the ulp context and tf session */
        ulp_ctx_detach(bp, session);
 
@@ -942,6 +1024,7 @@ bnxt_ulp_eth_dev_ptr2_cntxt_get(struct rte_eth_dev *dev)
 
        if (BNXT_ETH_DEV_IS_REPRESENTOR(dev)) {
                struct bnxt_vf_representor *vfr = dev->data->dev_private;
+
                bp = vfr->parent_dev->data->dev_private;
        }