[dpdk-dev] [PATCH 6/6] net/cxgbevf: fix illegal memory access when freeing MPS TCAM

[Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>]

Individual MPS TCAM entries are not allocated as separate entities.
All entries are allocated once as an array. So, fix bug with attempting
to free illegal memory location.

Also add missing MPS TCAM initialization for CXGBEVF.

Fixes: 6fda3f0ddda9 ("net/cxgbe: add API to program hardware MPS table")

Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
---
 drivers/net/cxgbe/cxgbevf_main.c | 6 ++++++
 drivers/net/cxgbe/mps_tcam.c     | 4 +---
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/net/cxgbe/cxgbevf_main.c b/drivers/net/cxgbe/cxgbevf_main.c
index 6223e1250..61bd85193 100644
--- a/drivers/net/cxgbe/cxgbevf_main.c
+++ b/drivers/net/cxgbe/cxgbevf_main.c
@@ -11,6 +11,7 @@
 #include "t4_regs.h"
 #include "t4_msg.h"
 #include "cxgbe.h"
+#include "mps_tcam.h"
 
 /*
  * Figure out how many Ports and Queue Sets we can support.  This depends on
@@ -271,6 +272,11 @@ int cxgbevf_probe(struct adapter *adapter)
 	print_adapter_info(adapter);
 	print_port_info(adapter);
 
+	adapter->mpstcam = t4_init_mpstcam(adapter);
+	if (!adapter->mpstcam)
+		dev_warn(adapter,
+			 "VF could not allocate mps tcam table. Continuing\n");
+
 	err = init_rss(adapter);
 	if (err)
 		goto out_free;
diff --git a/drivers/net/cxgbe/mps_tcam.c b/drivers/net/cxgbe/mps_tcam.c
index 02ec69a92..71c8070b3 100644
--- a/drivers/net/cxgbe/mps_tcam.c
+++ b/drivers/net/cxgbe/mps_tcam.c
@@ -236,8 +236,6 @@ struct mpstcam_table *t4_init_mpstcam(struct adapter *adap)
 
 void t4_cleanup_mpstcam(struct adapter *adap)
 {
-	if (adap->mpstcam) {
-		t4_os_free(adap->mpstcam->entry);
+	if (adap->mpstcam)
 		t4_os_free(adap->mpstcam);
-	}
 }
-- 
2.18.0