From: "Wei Hu (Xavier)" <xavier.hu...@huawei.com>
Currently, there is a potential problem that changing the content of
dev->data->dev_conf.rxmode.offloads even when the pointer named
dev->dev_ops->vlan_offload_set is NULL in the API function named
rte_eth_dev_set_vlan_offload.
It is a good idea that prevent the side effect and make the API return
success if no change requested. This patch fixes the problem, the detail
information as below:
- Update a local 'dev_offloads' variable, instead of directly updating the
device config data
- if no change requested, "mask == 0", return success
- if change requested, check the 'vlan_offload_set' dev_ops in this stage
- assign the local 'dev_offloads' to 'dev->data->dev_conf.rxmode.offloads'
and call the dev_ops
- On error recover the 'dev->data->dev_conf.rxmode.offloads' to
'orig_offloads'
Fixes: 01eb53eefeb4 ("ethdev: rename folder to library name")
Cc: sta...@dpdk.org
Signed-off-by: Wei Hu (Xavier) <xavier.hu...@huawei.com>
Signed-off-by: Chunsong Feng <fengchuns...@huawei.com>
Signed-off-by: Min Wang (Jushui) <wangm...@huawei.com>
Signed-off-by: Min Hu (Connor) <humi...@huawei.com>
---
v1 -> v2:
1. Update the modification according to Ferruh Yigit's comment.
The related link as below:
http://patches.dpdk.org/patch/64779/
2. Update the commit log and title of the patch.
---
lib/librte_ethdev/rte_ethdev.c | 31 ++++++++++++++++---------------
1 file changed, 16 insertions(+), 15 deletions(-)
diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index aec2d0f70..9232503f7 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -3253,53 +3253,53 @@ rte_eth_dev_set_vlan_offload(uint16_t port_id, int
offload_mask)
int mask = 0;
int cur, org = 0;
uint64_t orig_offloads;
- uint64_t *dev_offloads;
+ uint64_t dev_offloads;
RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
dev = &rte_eth_devices[port_id];
/* save original values in case of failure */
orig_offloads = dev->data->dev_conf.rxmode.offloads;
- dev_offloads = &dev->data->dev_conf.rxmode.offloads;
+ dev_offloads = orig_offloads;
/*check which option changed by application*/
cur = !!(offload_mask & ETH_VLAN_STRIP_OFFLOAD);
- org = !!(*dev_offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
+ org = !!(dev_offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
if (cur != org) {
if (cur)
- *dev_offloads |= DEV_RX_OFFLOAD_VLAN_STRIP;
+ dev_offloads |= DEV_RX_OFFLOAD_VLAN_STRIP;
else
- *dev_offloads &= ~DEV_RX_OFFLOAD_VLAN_STRIP;
+ dev_offloads &= ~DEV_RX_OFFLOAD_VLAN_STRIP;
mask |= ETH_VLAN_STRIP_MASK;
}
cur = !!(offload_mask & ETH_VLAN_FILTER_OFFLOAD);
- org = !!(*dev_offloads & DEV_RX_OFFLOAD_VLAN_FILTER);
+ org = !!(dev_offloads & DEV_RX_OFFLOAD_VLAN_FILTER);
if (cur != org) {
if (cur)
- *dev_offloads |= DEV_RX_OFFLOAD_VLAN_FILTER;
+ dev_offloads |= DEV_RX_OFFLOAD_VLAN_FILTER;
else
- *dev_offloads &= ~DEV_RX_OFFLOAD_VLAN_FILTER;
+ dev_offloads &= ~DEV_RX_OFFLOAD_VLAN_FILTER;
mask |= ETH_VLAN_FILTER_MASK;
}
cur = !!(offload_mask & ETH_VLAN_EXTEND_OFFLOAD);
- org = !!(*dev_offloads & DEV_RX_OFFLOAD_VLAN_EXTEND);
+ org = !!(dev_offloads & DEV_RX_OFFLOAD_VLAN_EXTEND);
if (cur != org) {
if (cur)
- *dev_offloads |= DEV_RX_OFFLOAD_VLAN_EXTEND;
+ dev_offloads |= DEV_RX_OFFLOAD_VLAN_EXTEND;
else
- *dev_offloads &= ~DEV_RX_OFFLOAD_VLAN_EXTEND;
+ dev_offloads &= ~DEV_RX_OFFLOAD_VLAN_EXTEND;
mask |= ETH_VLAN_EXTEND_MASK;
}
cur = !!(offload_mask & ETH_QINQ_STRIP_OFFLOAD);
- org = !!(*dev_offloads & DEV_RX_OFFLOAD_QINQ_STRIP);
+ org = !!(dev_offloads & DEV_RX_OFFLOAD_QINQ_STRIP);
if (cur != org) {
if (cur)
- *dev_offloads |= DEV_RX_OFFLOAD_QINQ_STRIP;
+ dev_offloads |= DEV_RX_OFFLOAD_QINQ_STRIP;
else
- *dev_offloads &= ~DEV_RX_OFFLOAD_QINQ_STRIP;
+ dev_offloads &= ~DEV_RX_OFFLOAD_QINQ_STRIP;
mask |= ETH_QINQ_STRIP_MASK;
}
@@ -3308,10 +3308,11 @@ rte_eth_dev_set_vlan_offload(uint16_t port_id, int
offload_mask)
return ret;
RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->vlan_offload_set, -ENOTSUP);
+ dev->data->dev_conf.rxmode.offloads = dev_offloads;
ret = (*dev->dev_ops->vlan_offload_set)(dev, mask);
if (ret) {
/* hit an error restore original values */
- *dev_offloads = orig_offloads;
+ dev->data->dev_conf.rxmode.offloads = orig_offloads;
}
return eth_err(port_id, ret);
--
2.23.0
