* [dpdk-stable] [PATCH v2 1/3] kni: refuse to initialise when IOVA is not PA
[not found] ` <1560505157-9769-1-git-send-email-david.marchand@redhat.com>
@ 2019-06-14 9:39 ` David Marchand
0 siblings, 0 replies; only message in thread
From: David Marchand @ 2019-06-14 9:39 UTC (permalink / raw)
To: dev
Cc: benjamin.walker, jerinj, anatoly.burakov, maxime.coquelin,
thomas, stable, Ferruh Yigit
If a forced iova-mode has been passed at init, kni is not supposed to
work.
Fixes: 075b182b54ce ("eal: force IOVA to a particular mode")
Cc: stable@dpdk.org
Signed-off-by: David Marchand <david.marchand@redhat.com>
---
lib/librte_kni/rte_kni.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/lib/librte_kni/rte_kni.c b/lib/librte_kni/rte_kni.c
index a0f1e37..a6bf323 100644
--- a/lib/librte_kni/rte_kni.c
+++ b/lib/librte_kni/rte_kni.c
@@ -97,6 +97,11 @@ enum kni_ops_status {
int
rte_kni_init(unsigned int max_kni_ifaces __rte_unused)
{
+ if (rte_eal_iova_mode() != RTE_IOVA_PA) {
+ RTE_LOG(ERR, KNI, "KNI requires IOVA as PA\n");
+ return -1;
+ }
+
/* Check FD and open */
if (kni_fd < 0) {
kni_fd = open("/dev/" KNI_DEVICE, O_RDWR);
--
1.8.3.1
^ permalink raw reply [flat|nested] only message in thread