[dpdk-dev] [PATCH v2] pci: fix check uio bind
Jianfeng Tan
jianfeng.tan at intel.com
Tue Oct 24 09:44:53 CEST 2017
When checking if any devices bound to uio, we did not exclud
those which are blacklisted (or in the case that a whitelist
is specified).
This patch fixes it by only checking whitelisted devices, or
not-blacklisted devices depending on the bus scan mode.
Fixes: 815c7deaed2d ("pci: get IOMMU class on Linux")
Signed-off-by: Jianfeng Tan <jianfeng.tan at intel.com>
---
v2:
- Accept two suggestions from Gaetan.
lib/librte_eal/linuxapp/eal/eal_pci.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/lib/librte_eal/linuxapp/eal/eal_pci.c b/lib/librte_eal/linuxapp/eal/eal_pci.c
index b4dbf95..4d1de07 100644
--- a/lib/librte_eal/linuxapp/eal/eal_pci.c
+++ b/lib/librte_eal/linuxapp/eal/eal_pci.c
@@ -516,8 +516,29 @@ static inline int
pci_one_device_bound_uio(void)
{
struct rte_pci_device *dev = NULL;
+ struct rte_devargs *devargs;
+ int need_check;
FOREACH_DEVICE_ON_PCIBUS(dev) {
+ devargs = dev->device.devargs;
+
+ need_check = 0;
+ switch (rte_pci_bus.bus.conf.scan_mode) {
+ case RTE_BUS_SCAN_WHITELIST:
+ if (devargs && devargs->policy == RTE_DEV_WHITELISTED)
+ need_check = 1;
+ break;
+ case RTE_BUS_SCAN_UNDEFINED:
+ case RTE_BUS_SCAN_BLACKLIST:
+ if (devargs == NULL ||
+ devargs->policy != RTE_DEV_BLACKLISTED)
+ need_check = 1;
+ break;
+ }
+
+ if (!need_check)
+ continue;
+
if (dev->kdrv == RTE_KDRV_IGB_UIO ||
dev->kdrv == RTE_KDRV_UIO_GENERIC) {
return 1;
--
2.7.4
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