net/netif: add netif_unregister()

RIOT-OS · May 3, 2022 · 87f0c6f · 87f0c6f
1 parent a6c5eae
commit 87f0c6f
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diff --git a/sys/include/net/netif.h b/sys/include/net/netif.h
@@ -200,6 +200,17 @@ int netif_set_opt(netif_t *netif, netopt_t opt, uint16_t context,
  */
 int netif_register(netif_t *netif);
 
+/**
+ * @brief   Removes a network interface in the global interface list.
+ *
+ * @param[in] netif     Interface to be removed
+ *
+ * @return  0 on success
+ * @return  -EINVAL if @p netif is NULL
+ *                  or not part of the global interface list
+ */
+int netif_unregister(netif_t *netif);
+
 #ifdef __cplusplus
 }
 #endif

diff --git a/sys/net/netif/netif.c b/sys/net/netif/netif.c
@@ -36,6 +36,21 @@ int netif_register(netif_t *netif)
     return 0;
 }
 
+int netif_unregister(netif_t *netif)
+{
+    void *found;
+
+    if (netif == NULL) {
+        return -EINVAL;
+    }
+
+    unsigned state = irq_disable();
+    found = list_remove(&netif_list, &netif->node);
+    irq_restore(state);
+
+    return found ? 0 : -EINVAL;
+}
+
 netif_t *netif_iter(const netif_t *last)
 {
     if (last == NULL) {