diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/mac80211.h | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 627885765a36..c34fd9a6160a 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -347,9 +347,16 @@ enum ieee80211_if_types { * @mac_addr: pointer to MAC address of the interface. This pointer is valid * until the interface is removed (i.e. it cannot be used after * remove_interface() callback was called for this interface). + * This pointer will be %NULL for monitor interfaces, be careful. * * This structure is used in add_interface() and remove_interface() * callbacks of &struct ieee80211_hw. + * + * When you allow multiple interfaces to be added to your PHY, take care + * that the hardware can actually handle multiple MAC addresses. However, + * also take care that when there's no interface left with mac_addr != %NULL + * you remove the MAC address from the device to avoid acknowledging packets + * in pure monitor mode. */ struct ieee80211_if_init_conf { int if_id; @@ -574,10 +581,11 @@ struct ieee80211_ops { * to returning zero. By returning non-zero addition of the interface * is inhibited. Unless monitor_during_oper is set, it is guaranteed * that monitor interfaces and normal interfaces are mutually - * exclusive. The open() handler is called after add_interface() - * if this is the first device added. At least one of the open() - * open() and add_interface() callbacks has to be assigned. If - * add_interface() is NULL, one STA interface is permitted only. */ + * exclusive. If assigned, the open() handler is called after + * add_interface() if this is the first device added. The + * add_interface() callback has to be assigned because it is the only + * way to obtain the requested MAC address for any interface. + */ int (*add_interface)(struct ieee80211_hw *hw, struct ieee80211_if_init_conf *conf); |