[dpdk-dev] [PATCH 2/2] crypto/octeontx2: add cpt kernel driver version check

[Ankur Dwivedi]

From: Tejasree Kondoj <ktejasree at marvell.com>

This patch checks if cpt pmd is compatible with kernel
cpt driver.

Signed-off-by: Ankur Dwivedi <adwivedi at marvell.com>
Signed-off-by: Tejasree Kondoj <ktejasree at marvell.com>
---
 drivers/crypto/octeontx2/otx2_cryptodev.h      | 1 +
 drivers/crypto/octeontx2/otx2_cryptodev_mbox.c | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/crypto/octeontx2/otx2_cryptodev.h b/drivers/crypto/octeontx2/otx2_cryptodev.h
index a00f3d6..fba7222 100644
--- a/drivers/crypto/octeontx2/otx2_cryptodev.h
+++ b/drivers/crypto/octeontx2/otx2_cryptodev.h
@@ -15,6 +15,7 @@
 
 #define OTX2_CPT_MAX_LFS		64
 #define OTX2_CPT_MAX_QUEUES_PER_VF	64
+#define OTX2_CPT_PMD_VERSION		3
 
 /**
  * Device private data
diff --git a/drivers/crypto/octeontx2/otx2_cryptodev_mbox.c b/drivers/crypto/octeontx2/otx2_cryptodev_mbox.c
index 6028439..75e610d 100644
--- a/drivers/crypto/octeontx2/otx2_cryptodev_mbox.c
+++ b/drivers/crypto/octeontx2/otx2_cryptodev_mbox.c
@@ -29,6 +29,13 @@
 	if (ret)
 		return -EIO;
 
+	if (rsp->cpt_pf_drv_version != OTX2_CPT_PMD_VERSION) {
+		otx2_err("Incompatible CPT PMD version"
+			 "(Kernel: 0x%04x DPDK: 0x%04x)",
+			  rsp->cpt_pf_drv_version, OTX2_CPT_PMD_VERSION);
+		return -EPIPE;
+	}
+
 	memcpy(hw_caps, rsp->eng_caps,
 		sizeof(union cpt_eng_caps) * CPT_MAX_ENG_TYPES);
 
-- 
1.9.3