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authorStanislav Zaikin <stanislav.zaikin@46labs.com>2023-09-05 10:40:07 +0200
committerMatthew Smith <mgsmith@netgate.com>2023-10-13 20:45:57 +0000
commita16463610639a22d470c2c999ce2a8408a575834 (patch)
tree4b3ed807748200d82ebd1752e0c94a1201160b6a /src/plugins/linux-cp/lcp_interface.c
parent8a92b68bc8eaaec48d144fba62490a32f28eb422 (diff)
linux-cp: check if lcp_itf_pair exists before creating tap
Now we create tun/tap and then check whether lcp_itf_pair was already created. Move the check in the beginning. Type: fix Signed-off-by: Stanislav Zaikin <stanislav.zaikin@46labs.com> Change-Id: I848685a9cfdbe92a5e38ecb8e5d5322262b4e384
Diffstat (limited to 'src/plugins/linux-cp/lcp_interface.c')
-rw-r--r--src/plugins/linux-cp/lcp_interface.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/plugins/linux-cp/lcp_interface.c b/src/plugins/linux-cp/lcp_interface.c
index fab048a7773..921dccf5519 100644
--- a/src/plugins/linux-cp/lcp_interface.c
+++ b/src/plugins/linux-cp/lcp_interface.c
@@ -782,6 +782,15 @@ lcp_itf_pair_create (u32 phy_sw_if_index, u8 *host_if_name,
const vnet_sw_interface_t *sw;
const vnet_hw_interface_t *hw;
const lcp_itf_pair_t *lip;
+ index_t lipi;
+
+ lipi = lcp_itf_pair_find_by_phy (phy_sw_if_index);
+
+ if (lipi != INDEX_INVALID)
+ {
+ LCP_ITF_PAIR_ERR ("pair_create: already created");
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
if (!vnet_sw_if_index_is_api_valid (phy_sw_if_index))
{