* [dpdk-stable] [DPDK] net/igc: fix coverity defects
@ 2020-05-06 6:10 alvinx.zhang
0 siblings, 0 replies; only message in thread
From: alvinx.zhang @ 2020-05-06 6:10 UTC (permalink / raw)
To: qabuild; +Cc: Alvin Zhang, stable
From: Alvin Zhang <alvinx.zhang@intel.com>
As title.
Fixes: bd3fcf0d0fa1 (net/igc: support RSS)
Cc: stable@dpdk.org
Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com>
---
drivers/net/igc/igc_ethdev.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/net/igc/igc_ethdev.c b/drivers/net/igc/igc_ethdev.c
index 16d98c6..ced8ffd 100644
--- a/drivers/net/igc/igc_ethdev.c
+++ b/drivers/net/igc/igc_ethdev.c
@@ -2266,6 +2266,8 @@ static int eth_igc_vlan_tpid_set(struct rte_eth_dev *dev,
return -EINVAL;
}
+ RTE_BUILD_BUG_ON(ETH_RSS_RETA_SIZE_128 % IGC_RSS_RDT_REG_SIZE);
+
/* set redirection table */
for (i = 0; i < ETH_RSS_RETA_SIZE_128; i += IGC_RSS_RDT_REG_SIZE) {
union igc_rss_reta_reg reta, reg;
@@ -2278,7 +2280,8 @@ static int eth_igc_vlan_tpid_set(struct rte_eth_dev *dev,
IGC_RSS_RDT_REG_SIZE_MASK);
/* if no need to update the register */
- if (!mask)
+ if (!mask ||
+ shift > (RTE_RETA_GROUP_SIZE - IGC_RSS_RDT_REG_SIZE))
continue;
/* check mask whether need to read the register value first */
@@ -2289,6 +2292,7 @@ static int eth_igc_vlan_tpid_set(struct rte_eth_dev *dev,
IGC_RETA(i / IGC_RSS_RDT_REG_SIZE));
/* update the register */
+ RTE_BUILD_BUG_ON(sizeof(reta.bytes) != IGC_RSS_RDT_REG_SIZE);
for (j = 0; j < IGC_RSS_RDT_REG_SIZE; j++) {
if (mask & (1u << j))
reta.bytes[j] =
@@ -2318,6 +2322,8 @@ static int eth_igc_vlan_tpid_set(struct rte_eth_dev *dev,
return -EINVAL;
}
+ RTE_BUILD_BUG_ON(ETH_RSS_RETA_SIZE_128 % IGC_RSS_RDT_REG_SIZE);
+
/* read redirection table */
for (i = 0; i < ETH_RSS_RETA_SIZE_128; i += IGC_RSS_RDT_REG_SIZE) {
union igc_rss_reta_reg reta;
@@ -2330,12 +2336,14 @@ static int eth_igc_vlan_tpid_set(struct rte_eth_dev *dev,
IGC_RSS_RDT_REG_SIZE_MASK);
/* if no need to read register */
- if (!mask)
+ if (!mask ||
+ shift > (RTE_RETA_GROUP_SIZE - IGC_RSS_RDT_REG_SIZE))
continue;
/* read register and get the queue index */
reta.dword = IGC_READ_REG_LE_VALUE(hw,
IGC_RETA(i / IGC_RSS_RDT_REG_SIZE));
+ RTE_BUILD_BUG_ON(sizeof(reta.bytes) != IGC_RSS_RDT_REG_SIZE);
for (j = 0; j < IGC_RSS_RDT_REG_SIZE; j++) {
if (mask & (1u << j))
reta_conf[idx].reta[shift + j] = reta.bytes[j];
--
1.8.3.1
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