samsung-sm8650/android_kernel_samsung_sm8650-modules
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Zdrojový kód Úkoly Pull requesty Akce Balíčky Projekty Vydání Wiki Aktivita

qcacmn: Introduce API to modify MAC address in action frame

Procházet zdrojové kódy 
Introduce two APIs which will change the RA, DA and BSSID fields
of 802.11 MAC header.

For any non-public action frame, supplicant will send RA, DA and BSSID
with MLD address which needs to be translated to link addresses to
transmit over the air. wlan_mlo_update_action_frame_from_user() API
will do the address translation from MLD to link.

If any non-public action frame is received over the air that needs
to be sent to userspace, the kernel expects MLD address in RA, DA
and BSSID fields. wlan_mlo_update_action_frame_to_user() API will
do the address translation from link to MLD.

Change-Id: Iab93dd1301003b78edf6d619cfbf552afa53ae7a
CRs-Fixed: 3394706
Tento commit je obsažen v:
Vinod Kumar Pirla
2023-02-01 22:42:05 -08:00
odevzdal Madan Koyyalamudi
rodič c595a4abdf
revize cad19e4fc7
2 změnil soubory, kde provedl 162 přidání a 0 odebrání
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50
umac/mlo_mgr/inc/wlan_mlo_mgr_main.h
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@@ -918,6 +918,42 @@ QDF_STATUS wlan_mlo_check_valid_config(struct wlan_mlo_dev_context *ml_dev,
*/
bool mlo_mgr_ml_peer_exist_on_diff_ml_ctx(uint8_t *peer_addr,
uint8_t *peer_vdev_id);
/**
* wlan_mlo_update_action_frame_from_user() - Change MAC address in WLAN frame
* received from userspace.
* @vdev: VDEV objmgr pointer.
* @frame: Pointer to start of WLAN MAC frame.
* @frame_len: Length of the frame.
*
* The API will translate MLD address in the SA, DA, BSSID for the action
* frames received from userspace with link address to send over the air.
* The API will not modify if the frame is a Public Action category frame and
* for VDEV other then STA mode.
*
* Return: void
*/
void wlan_mlo_update_action_frame_from_user(struct wlan_objmgr_vdev *vdev,
uint8_t *frame,
uint32_t frame_len);
/**
* wlan_mlo_update_action_frame_to_user() - Change MAC address in WLAN frame
* received over the air.
* @vdev: VDEV objmgr pointer.
* @frame: Pointer to start of WLAN MAC frame.
* @frame_len: Length of the frame.
*
* The API will translate link address in the SA, DA, BSSID for the action
* frames received over the air with MLD address to send to userspace.
* The API will not modify if the frame is a Public Action category frame and
* for VDEV other then STA mode.
*
* Return: void
*/
void wlan_mlo_update_action_frame_to_user(struct wlan_objmgr_vdev *vdev,
uint8_t *frame,
uint32_t frame_len);
#else
static inline QDF_STATUS wlan_mlo_mgr_init(void)
{
@@ -943,6 +979,20 @@ bool mlo_mgr_ml_peer_exist_on_diff_ml_ctx(uint8_t *peer_addr,
return false;
}
static inline
void wlan_mlo_update_action_frame_from_user(struct wlan_objmgr_vdev *vdev,
uint8_t *frame,
uint32_t frame_len)
{
}
static inline
void wlan_mlo_update_action_frame_to_user(struct wlan_objmgr_vdev *vdev,
uint8_t *frame,
uint32_t frame_len)
{
}
static inline
uint8_t wlan_mlo_get_sta_mld_ctx_count(void)
{

112
umac/mlo_mgr/src/wlan_mlo_mgr_main.c
Zobrazit soubor

@@ -382,6 +382,118 @@ g_ml_ref:
ml_link_lock_release(g_mlo_ctx);
return ret_status;
}
#define WLAN_HDD_MGMT_FRAME_DA_OFFSET 4
#define WLAN_HDD_MGMT_FRAME_SA_OFFSET (WLAN_HDD_MGMT_FRAME_DA_OFFSET + 6)
#define WLAN_HDD_MGMT_FRAME_BSSID_OFFSET (WLAN_HDD_MGMT_FRAME_SA_OFFSET + 6)
#define WLAN_HDD_MGMT_FRAME_ACTION_CATEGORY_OFFSET \
(WLAN_HDD_MGMT_FRAME_BSSID_OFFSET + 6 + 2)
#define WLAN_HDD_MGMT_FRAME_ACTION_TYPE_OFFSET \
(WLAN_HDD_MGMT_FRAME_ACTION_CATEGORY_OFFSET + 1)
#define WLAN_HDD_ACTION_FRAME_CATEGORY_PUBLIC 0x04
/*
* Typical 802.11 Action Frame Format
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
* | FC | DUR | DA | SA | BSSID |Seq.|Cat.|Act| Elements | FCS |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
* 2 2 6 6 6 2 1 1 Variable Len 4
*/
void wlan_mlo_update_action_frame_from_user(struct wlan_objmgr_vdev *vdev,
uint8_t *frame,
uint32_t frame_len)
{
struct wlan_objmgr_peer *peer;
uint8_t *da, *sa, *bssid;
if (!wlan_vdev_mlme_is_mlo_vdev(vdev) ||
(wlan_vdev_mlme_get_opmode(vdev) != QDF_STA_MODE))
return;
if (frame_len <= WLAN_HDD_MGMT_FRAME_ACTION_TYPE_OFFSET) {
mlo_debug("Not a valid Action frame len: %d", frame_len);
return;
}
/* Translate address only for action frames
* which are not of public category.
* Reference: 802.11-2012, Subclause: 8.5
*/
if (frame[WLAN_HDD_MGMT_FRAME_ACTION_CATEGORY_OFFSET] ==
WLAN_HDD_ACTION_FRAME_CATEGORY_PUBLIC)
return;
da = frame + WLAN_HDD_MGMT_FRAME_DA_OFFSET;
sa = frame + WLAN_HDD_MGMT_FRAME_SA_OFFSET;
bssid = frame + WLAN_HDD_MGMT_FRAME_BSSID_OFFSET;
peer = wlan_objmgr_vdev_try_get_bsspeer(vdev, WLAN_MLO_MGR_ID);
if (!peer) {
mlo_debug("Peer not found");
return;
}
mlo_debug("Change MLD addr to link addr for non-Public action frame");
/* DA = VDEV's BSS peer's link address.
* SA = VDEV's link address.
* BSSID = VDEV's BSS peer's link address.
*/
qdf_ether_addr_copy(da, wlan_peer_get_macaddr(peer));
qdf_ether_addr_copy(sa, wlan_vdev_mlme_get_macaddr(vdev));
qdf_ether_addr_copy(bssid, wlan_peer_get_macaddr(peer));
wlan_objmgr_peer_release_ref(peer, WLAN_MLO_MGR_ID);
}
void wlan_mlo_update_action_frame_to_user(struct wlan_objmgr_vdev *vdev,
uint8_t *frame,
uint32_t frame_len)
{
struct wlan_objmgr_peer *peer;
uint8_t *da, *sa, *bssid;
if (!wlan_vdev_mlme_is_mlo_vdev(vdev) ||
(wlan_vdev_mlme_get_opmode(vdev) != QDF_STA_MODE))
return;
if (frame_len <= WLAN_HDD_MGMT_FRAME_ACTION_TYPE_OFFSET) {
mlo_debug("Not a valid Action frame len: %d", frame_len);
return;
}
/* Translate address only for action frames
* which are not of public category.
* Reference: 802.11-2012, Subclause: 8.5
*/
if (frame[WLAN_HDD_MGMT_FRAME_ACTION_CATEGORY_OFFSET] ==
WLAN_HDD_ACTION_FRAME_CATEGORY_PUBLIC)
return;
da = frame + WLAN_HDD_MGMT_FRAME_DA_OFFSET;
sa = frame + WLAN_HDD_MGMT_FRAME_SA_OFFSET;
bssid = frame + WLAN_HDD_MGMT_FRAME_BSSID_OFFSET;
peer = wlan_objmgr_vdev_try_get_bsspeer(vdev, WLAN_MLO_MGR_ID);
if (!peer) {
mlo_debug("Peer not found");
return;
}
mlo_debug("Change link addr to MLD addr for non-Public action frame");
/* DA = VDEV's MLD address.
* SA = VDEV's BSS peer's MLD address.
* BSSID = VDEV's BSS peer's MLD address.
*/
qdf_ether_addr_copy(da, wlan_vdev_mlme_get_mldaddr(vdev));
qdf_ether_addr_copy(sa, wlan_peer_mlme_get_mldaddr(peer));
qdf_ether_addr_copy(bssid, wlan_peer_mlme_get_mldaddr(peer));
wlan_objmgr_peer_release_ref(peer, WLAN_MLO_MGR_ID);
}
#endif
static QDF_STATUS mlo_ap_ctx_deinit(struct wlan_mlo_dev_context *ml_dev)