Exemple #1
0
void
ol_rx_addba_handler(
    ol_txrx_pdev_handle pdev,
    u_int16_t peer_id,
    u_int8_t tid,
    u_int8_t win_sz)
{
    unsigned round_pwr2_win_sz, array_size;
    struct ol_txrx_peer_t *peer;
    struct ol_rx_reorder_t *rx_reorder;

    peer = ol_txrx_peer_find_by_id(pdev, peer_id);
    if (peer == NULL) {
        return;
    }
    rx_reorder = &peer->tids_rx_reorder[tid];

    TXRX_ASSERT2(win_sz <= 64);
    round_pwr2_win_sz = OL_RX_REORDER_ROUND_PWR2(win_sz);
    array_size = round_pwr2_win_sz * sizeof(struct ol_rx_reorder_array_elem_t);
    rx_reorder->array = adf_os_mem_alloc(pdev->osdev, array_size);
    TXRX_ASSERT1(rx_reorder->array);
    adf_os_mem_set(rx_reorder->array, 0x0, array_size);

    rx_reorder->win_sz_mask = round_pwr2_win_sz - 1;
}
Exemple #2
0
/*
 * Porting from Ap11PrepareForwardedPacket.
 * This routine is called when a RX data frame from an associated station is
 * to be forwarded to another associated station. We will prepare the
 * received packet so that it is suitable for transmission again.
 * Check that this Packet is suitable for forwarding. If yes, then
 * prepare the new 802.11 header.
 */
static inline
void
ol_ap_fwd_check(struct ol_txrx_vdev_t *vdev, adf_nbuf_t msdu)
{
    struct ieee80211_frame *mac_header;
    unsigned char tmp_addr[6];
    unsigned char type;
    unsigned char subtype;
    unsigned char fromds;
    unsigned char tods;

    mac_header = (struct ieee80211_frame *) (adf_nbuf_data(msdu));
    TXRX_ASSERT1(mac_header);

    type    = mac_header->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
    subtype = mac_header->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
    tods    = mac_header->i_fc[1] & IEEE80211_FC1_DIR_TODS;
    fromds  = mac_header->i_fc[1] & IEEE80211_FC1_DIR_FROMDS;

	/*
     * Make sure no QOS or any other non-data subtype
     * Should be a ToDs data frame.
     * Make sure that this frame is unicast and not for us.
     * These packets should come up through the normal rx path and not forwarded.
     */
    if (type != IEEE80211_FC0_TYPE_DATA ||
        subtype != 0x0 ||
        ((tods != 1) || (fromds != 0)) ||
        (adf_os_mem_cmp(
            mac_header->i_addr3, vdev->mac_addr.raw, IEEE80211_ADDR_LEN) == 0))
	{
#ifdef DEBUG_HOST_RC
        TXRX_PRINT(TXRX_PRINT_LEVEL_INFO1, "Exit: %s | Unnecessary to adjust mac header\n", __func__);
#endif
    }
    else
    {
        // Flip the ToDs bit to FromDs
        mac_header->i_fc[1] &= 0xfe;
        mac_header->i_fc[1] |= 0x2;

        /*
         * Flip the addresses
         * (ToDs, addr1, RA=BSSID) move to (FrDs, addr2, TA=BSSID)
         * (ToDs, addr2, SA) move to (FrDs, addr3, SA)
         * (ToDs, addr3, DA) move to (FrDs, addr1, DA)
         */

        memcpy(tmp_addr,
               mac_header->i_addr2,
               sizeof (tmp_addr));

        memcpy(mac_header->i_addr2,
               mac_header->i_addr1,
               sizeof (tmp_addr));

        memcpy(mac_header->i_addr1,
               mac_header->i_addr3,
               sizeof (tmp_addr));

        memcpy(mac_header->i_addr3,
               tmp_addr,
               sizeof (tmp_addr));
    }
}