[PATCH v5] net/cpfl: get running host ID for CPFL PMD

[Shaiq Wani <shaiq.wani@intel.com>]

Check whether CPFL PMD runs on Host or ACC

---
v2 Changes:
-Changed implementation based on review comment.
v3 Changes:
-Fixed indentation.
v4 Changes:
-Fix ipu_imc and ipu_acc to ipu-imc and ipu-acc.
v5 Changes:
-Updated the documentation with the changes implemented
 in this patch.
---

Signed-off-by: Shaiq Wani <shaiq.wani@intel.com>
---
 doc/guides/nics/cpfl.rst       |  3 +++
 drivers/net/cpfl/cpfl_ethdev.c | 19 +++++++++++++++++++
 drivers/net/cpfl/cpfl_ethdev.h |  5 ++++-
 3 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/doc/guides/nics/cpfl.rst b/doc/guides/nics/cpfl.rst
index 9b7a99c894..3430ac7398 100644
--- a/doc/guides/nics/cpfl.rst
+++ b/doc/guides/nics/cpfl.rst
@@ -150,6 +150,9 @@ Runtime Configuration
   Then the PMD will load json file for device ``ca:00.0``.
   The parameter is optional.
 
+  As CPFL PMD can run on both XEON host and IPU's ACC, the driver dynamically detects
+  which system it is running on using get_running_host_id functionality.
+
 Driver compilation and testing
 ------------------------------
 
diff --git a/drivers/net/cpfl/cpfl_ethdev.c b/drivers/net/cpfl/cpfl_ethdev.c
index ef19aa1b6a..4e9fea9643 100644
--- a/drivers/net/cpfl/cpfl_ethdev.c
+++ b/drivers/net/cpfl/cpfl_ethdev.c
@@ -14,6 +14,7 @@
 
 #include "cpfl_ethdev.h"
 #include <ethdev_private.h>
+#include <sys/utsname.h>
 #include "cpfl_rxtx.h"
 #include "cpfl_flow.h"
 #include "cpfl_rules.h"
@@ -2270,6 +2271,23 @@ cpfl_repr_allowlist_uninit(struct cpfl_adapter_ext *adapter)
 	rte_hash_free(adapter->repr_allowlist_hash);
 }
 
+static uint8_t
+get_running_host_id(void)
+{
+	struct utsname unamedata;
+	uint8_t host_id = CPFL_INVALID_HOST_ID;
+
+	if (uname(&unamedata) != 0)
+		PMD_INIT_LOG(ERR, "Cannot fetch node_name for host\n");
+	else if (strstr(unamedata.nodename, "ipu-imc"))
+		PMD_INIT_LOG(ERR, "CPFL PMD cannot be running on IMC.");
+	else if (strstr(unamedata.nodename, "ipu-acc"))
+		host_id = CPFL_HOST_ID_ACC;
+	else
+		host_id = CPFL_HOST_ID_HOST;
+
+	return host_id;
+}
 
 static int
 cpfl_adapter_ext_init(struct rte_pci_device *pci_dev, struct cpfl_adapter_ext *adapter,
@@ -2289,6 +2307,7 @@ cpfl_adapter_ext_init(struct rte_pci_device *pci_dev, struct cpfl_adapter_ext *a
 	hw->vendor_id = pci_dev->id.vendor_id;
 	hw->device_id = pci_dev->id.device_id;
 	hw->subsystem_vendor_id = pci_dev->id.subsystem_vendor_id;
+	adapter->host_id = get_running_host_id();
 
 	strncpy(adapter->name, pci_dev->device.name, PCI_PRI_STR_SIZE);
 
diff --git a/drivers/net/cpfl/cpfl_ethdev.h b/drivers/net/cpfl/cpfl_ethdev.h
index 457db6d6be..3f6f9ca5ea 100644
--- a/drivers/net/cpfl/cpfl_ethdev.h
+++ b/drivers/net/cpfl/cpfl_ethdev.h
@@ -66,6 +66,7 @@
 #define CPFL_PF_TYPE_NUM	2
 #define CPFL_HOST_ID_HOST	0
 #define CPFL_HOST_ID_ACC	1
+#define CPFL_INVALID_HOST_ID    UINT8_MAX
 #define CPFL_PF_TYPE_APF	0
 #define CPFL_PF_TYPE_CPF	1
 
@@ -230,6 +231,7 @@ struct cpfl_adapter_ext {
 	uint8_t ctrl_vport_recv_info[IDPF_DFLT_MBX_BUF_SIZE];
 	struct idpf_ctlq_info *ctlqp[CPFL_CFGQ_NUM];
 	struct cpfl_ctlq_create_info cfgq_info[CPFL_CFGQ_NUM];
+	uint8_t host_id;
 };
 
 TAILQ_HEAD(cpfl_adapter_list, cpfl_adapter_ext);
@@ -296,7 +298,8 @@ cpfl_get_vsi_id(struct cpfl_itf *itf)
 
 		vport_identity.func_type = CPCHNL2_FTYPE_LAN_PF;
 		/* host: CPFL_HOST0_CPF_ID, acc: CPFL_ACC_CPF_ID */
-		vport_identity.pf_id = CPFL_ACC_CPF_ID;
+		vport_identity.pf_id = (itf->adapter->host_id == CPFL_HOST_ID_ACC) ?
+								CPFL_ACC_CPF_ID : CPFL_HOST0_CPF_ID;
 		vport_identity.vf_id = 0;
 		vport_identity.vport_id = vport_id;
 		ret = rte_hash_lookup_data(itf->adapter->vport_map_hash,
-- 
2.34.1