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tap: fix the crash [VPP-1645]

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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>
(cherry picked from commit 2a6861ff7b)
This commit is contained in:
Mohsin Kazmi
2019-04-15 13:17:55 +02:00
committed by Damjan Marion
parent 58dcf5c5e6
commit 6c2f821179
1 changed files with 3 additions and 0 deletions
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3
src/vnet/devices/tap/tap.c
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@@ -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)