[dpdk-dev] [PATCH 1/4] net/bnxt: fix cleanup if a filter allocation fails
Ajit Khaparde
ajit.khaparde at broadcom.com
Tue Oct 10 16:23:00 CEST 2017
We are not checking if a filter allocation succeeded.
And we end up accessing a null pointer after that.
Also invalidate the fw_l2_filter_id to prevent unnecessary
HW access and hence HWRM command failures during exit.
Signed-off-by: Ajit Khaparde <ajit.khaparde at broadcom.com>
---
drivers/net/bnxt/bnxt_filter.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/net/bnxt/bnxt_filter.c b/drivers/net/bnxt/bnxt_filter.c
index 9f171fd99..4c1db559d 100644
--- a/drivers/net/bnxt/bnxt_filter.c
+++ b/drivers/net/bnxt/bnxt_filter.c
@@ -828,12 +828,20 @@ bnxt_validate_and_parse_flow(struct rte_eth_dev *dev,
}
filter->dst_id = vnic->fw_vnic_id;
filter1 = bnxt_get_l2_filter(bp, filter, vnic);
+ if (filter1 == NULL) {
+ rc = -ENOSPC;
+ goto ret;
+ }
filter->fw_l2_filter_id = filter1->fw_l2_filter_id;
RTE_LOG(DEBUG, PMD, "VNIC found\n");
break;
case RTE_FLOW_ACTION_TYPE_DROP:
vnic0 = STAILQ_FIRST(&bp->ff_pool[0]);
filter1 = bnxt_get_l2_filter(bp, filter, vnic0);
+ if (filter1 == NULL) {
+ rc = -ENOSPC;
+ goto ret;
+ }
filter->fw_l2_filter_id = filter1->fw_l2_filter_id;
if (filter->filter_type == HWRM_CFA_EM_FILTER)
filter->flags =
@@ -845,6 +853,10 @@ bnxt_validate_and_parse_flow(struct rte_eth_dev *dev,
case RTE_FLOW_ACTION_TYPE_COUNT:
vnic0 = STAILQ_FIRST(&bp->ff_pool[0]);
filter1 = bnxt_get_l2_filter(bp, filter, vnic0);
+ if (filter1 == NULL) {
+ rc = -ENOSPC;
+ goto ret;
+ }
filter->fw_l2_filter_id = filter1->fw_l2_filter_id;
filter->flags = HWRM_CFA_NTUPLE_FILTER_ALLOC_INPUT_FLAGS_METER;
break;
@@ -892,6 +904,7 @@ bnxt_flow_validate(struct rte_eth_dev *dev,
ret = bnxt_validate_and_parse_flow(dev, pattern, actions, attr,
error, filter);
/* No need to hold on to this filter if we are just validating flow */
+ filter->fw_l2_filter_id = -1;
bnxt_free_filter(bp, filter);
return ret;
@@ -961,6 +974,7 @@ bnxt_flow_create(struct rte_eth_dev *dev,
return flow;
}
free_filter:
+ filter->fw_l2_filter_id = -1;
bnxt_free_filter(bp, filter);
free_flow:
RTE_LOG(ERR, PMD, "Failed to create flow.\n");
--
2.13.5 (Apple Git-94)
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