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authorMohsin Kazmi <sykazmi@cisco.com>2019-04-15 13:17:55 +0200
committerDave Barach <openvpp@barachs.net>2019-04-15 12:56:11 +0000
commit2a6861ff7bc90c1518b68459210830052774d429 (patch)
treeb75bc3302f6fdeb14bb104bafdf1af35349b7457 /src/vnet
parentd0d6b942e954b5e26d04ba830ec1fe5fa1f4d4b6 (diff)
tap: fix the crash
Crash will happen when someone will try to setup a tap interface in host namespace without providing the host side of tap interface custom name. This patch fixes the problem by using the default name in this case. Change-Id: Ic1eaea5abd01bc6c766d0e0fcacae29ab7a7ec45 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Diffstat (limited to 'src/vnet')
-rw-r--r--src/vnet/devices/tap/tap.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/vnet/devices/tap/tap.c b/src/vnet/devices/tap/tap.c
index 388cfa34c37..91d4a811ad8 100644
--- a/src/vnet/devices/tap/tap.c
+++ b/src/vnet/devices/tap/tap.c
@@ -175,6 +175,9 @@ tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args)
_IOCTL (vif->tap_fd, TUNSETIFF, (void *) &ifr);
vif->ifindex = if_nametoindex (ifr.ifr_ifrn.ifrn_name);
+ if (!args->host_if_name)
+ args->host_if_name = (u8 *) ifr.ifr_ifrn.ifrn_name;
+
unsigned int offload = 0;
hdrsz = sizeof (struct virtio_net_hdr_v1);
if (args->tap_flags & TAP_FLAG_GSO)