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VLAN: Check vlan_desc validity in a failure debug print

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The recent VLAN changes added an explicit code path that sets vlan_desc
= NULL within ap_sta_set_vlan(). This makes some code analyzers warn
about the debug print that could potentially dereference this pointer.
Silence that warning by verifying the pointer more consistently within
this function.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2016-02-20 19:22:43 +02:00
parent 43022abdb9
commit 75cc211d6b
1 changed files with 3 additions and 2 deletions
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5
src/ap/sta_info.c
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@ -900,8 +900,9 @@ int ap_sta_set_vlan(struct hostapd_data *hapd, struct sta_info *sta,
HOSTAPD_MODULE_IEEE80211, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_DEBUG, HOSTAPD_LEVEL_DEBUG,
"could not add dynamic VLAN interface for vlan=%d%s", "could not add dynamic VLAN interface for vlan=%d%s",
vlan_desc->untagged, vlan_desc ? vlan_desc->untagged : -1,
vlan_desc->tagged[0] ? "+" : ""); (vlan_desc && vlan_desc->tagged[0]) ?
"+" : "");
vlan_id = 0; vlan_id = 0;
ret = -1; ret = -1;
goto done; goto done;