[RFC v2 81/99] tests: Add get_iface_addr() to wpasupplicant.py

[Andrei Otcheretianski]

This function is needed to get interface address by name.
It will be used for NAN testing.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski at intel.com>
---
 tests/hwsim/wpasupplicant.py | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/tests/hwsim/wpasupplicant.py b/tests/hwsim/wpasupplicant.py
index fb512eddae..04230d9726 100644
--- a/tests/hwsim/wpasupplicant.py
+++ b/tests/hwsim/wpasupplicant.py
@@ -1762,3 +1762,21 @@ class WpaSupplicant:
         if addr and addr not in ev:
             raise Exception("Unexpected STA address in disconnection event: " + ev)
         return ev
+
+    def get_iface_addr(self, ifname):
+        ifaces = self.global_request("STATUS")
+        addr = None
+        lines = ifaces.split('\n')
+        for i, line in enumerate(lines):
+            if line.startswith('ifname=' + ifname):
+                # The address should be on the next line
+                if i + 1 < len(lines):
+                    addr_line = lines[i + 1]
+                    if addr_line.startswith('address='):
+                        addr = addr_line.split('=')[1]
+                        break
+
+        if addr is None:
+            raise Exception(f"Failed to get {ifname} address from STATUS output")
+
+        return addr
-- 
2.49.0