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From: Ajit Khaparde <ajit.khaparde@broadcom.com>
To: dev@dpdk.org
Cc: ferruh.yigit@intel.com,
Kishore Padmanabha <kishore.padmanabha@broadcom.com>,
Michael Baucom <michael.baucom@broadcom.com>
Date: Thu, 23 Jul 2020 22:32:15 -0700
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<20200724053235.71069-1-ajit.khaparde@broadcom.com>
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Subject: [dpdk-dev] [PATCH v3 02/22] net/bnxt: add access to nat global
register
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From: Kishore Padmanabha <kishore.padmanabha@broadcom.com>
Add support to enable or disable the NAT global registers.
The NAT feature is enabled in hardware during initialization
and disabled at deinitialization of the application.
Signed-off-by: Kishore Padmanabha <kishore.padmanabha@broadcom.com>
Reviewed-by: Michael Baucom <michael.baucom@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
---
drivers/net/bnxt/tf_ulp/bnxt_ulp.c | 83 ++++++++++++++++++++++++++++++
drivers/net/bnxt/tf_ulp/bnxt_ulp.h | 4 ++
2 files changed, 87 insertions(+)
diff --git a/drivers/net/bnxt/tf_ulp/bnxt_ulp.c b/drivers/net/bnxt/tf_ulp/bnxt_ulp.c
index 0869231a0..7c65a4b1b 100644
--- 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;
}
diff --git a/drivers/net/bnxt/tf_ulp/bnxt_ulp.h b/drivers/net/bnxt/tf_ulp/bnxt_ulp.h
index f9e5e2ba6..7c95ead55 100644
--- a/drivers/net/bnxt/tf_ulp/bnxt_ulp.h
+++ b/drivers/net/bnxt/tf_ulp/bnxt_ulp.h
@@ -14,6 +14,10 @@
#include "ulp_template_db_enum.h"
+/* NAT defines to reuse existing inner L2 SMAC and DMAC */
+#define BNXT_ULP_NAT_INNER_L2_HEADER_SMAC 0x2000
+#define BNXT_ULP_NAT_INNER_L2_HEADER_DMAC 0x100
+
/* defines for the ulp_flags */
#define BNXT_ULP_VF_REP_ENABLED 0x1
#define ULP_VF_REP_IS_ENABLED(flag) ((flag) & BNXT_ULP_VF_REP_ENABLED)
--
2.21.1 (Apple Git-122.3)