From: Helin Zhang <helin.zhang@intel.com>
Date: Fri, 11 Mar 2016 16:50:58 +0000 (+0800)
Subject: i40e: fix overflow
X-Git-Tag: spdx-start~7468
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=c7a4ff80722e9237a4c504106d21ba5ca27d8df2;p=dpdk.git

i40e: fix overflow

The array 'ptype_table' was defined in depth of 'UINT8_MAX' which
is 255, while the querying index could be from 0 to 255. The issue
can be fixed with expanding the array to one more element.

Fixes: 9571ea028489 ("i40e: replace some offload flags with unified packet type")

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
---

diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
index 8931b8ea1a..c10eeff93c 100644
--- a/drivers/net/i40e/i40e_rxtx.c
+++ b/drivers/net/i40e/i40e_rxtx.c
@@ -192,7 +192,7 @@ i40e_get_iee15888_flags(struct rte_mbuf *mb, uint64_t qword)
 static inline uint32_t
 i40e_rxd_pkt_type_mapping(uint8_t ptype)
 {
-	static const uint32_t ptype_table[UINT8_MAX] __rte_cache_aligned = {
+	static const uint32_t type_table[UINT8_MAX + 1] __rte_cache_aligned = {
 		/* L2 types */
 		/* [0] reserved */
 		[1] = RTE_PTYPE_L2_ETHER,
@@ -718,7 +718,7 @@ i40e_rxd_pkt_type_mapping(uint8_t ptype)
 		/* All others reserved */
 	};
 
-	return ptype_table[ptype];
+	return type_table[ptype];
 }
 
 #define I40E_RX_DESC_EXT_STATUS_FLEXBH_MASK   0x03