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AP: Allow starting multiple interfaces within single MLD

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Add support for including multiple hostapd interfaces in the same AP
MLD, i.e., all using the same underlying driver network interface.

To do so, when a new hostapd interface is added, if there is already
another interface using the same underlying network interface, associate
the new interface with the same private data object, instead of creating
a new one.

As some of the BSSs are non-first BSSs, meaning that they reuse the
drv_priv of the initial BSS, make sure not to double free it.

Currently multiple BSS entries are not supported so always use bss[0]
for MLD.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
This commit is contained in:
Andrei Otcheretianski 2023-05-22 22:33:36 +03:00 • committed by Jouni Malinen
parent f2dd75093f
commit 7fa99b3246
4 changed files with 139 additions and 6 deletions
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6
src/ap/hostapd.h
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@ -175,6 +175,12 @@ struct hostapd_data {
unsigned int reenable_beacon:1;
u8 own_addr[ETH_ALEN];
u8 mld_addr[ETH_ALEN];
u8 mld_link_id;
/* Used for mld_link_id assignment - valid on the first MLD BSS only */
u8 mld_next_link_id;
struct hostapd_data *mld_first_bss;
int num_sta; /* number of entries in sta_list */
struct sta_info *sta_list; /* STA info list head */