/** * @brief The main process * * @param pmlan_adapter A pointer to mlan_adapter structure * * @return MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE */ mlan_status mlan_rx_process(IN t_void * pmlan_adapter) { mlan_status ret = MLAN_STATUS_SUCCESS; mlan_adapter *pmadapter = (mlan_adapter *) pmlan_adapter; pmlan_callbacks pcb; pmlan_buffer pmbuf; ENTER(); MASSERT(pmlan_adapter); pcb = &pmadapter->callbacks; pcb->moal_spin_lock(pmadapter->pmoal_handle, pmadapter->prx_proc_lock); if (pmadapter->mlan_rx_processing || pmadapter->rx_lock_flag) { pcb->moal_spin_unlock(pmadapter->pmoal_handle, pmadapter->prx_proc_lock); goto exit_rx_proc; } else { pmadapter->mlan_rx_processing = MTRUE; pcb->moal_spin_unlock(pmadapter->pmoal_handle, pmadapter->prx_proc_lock); } /* Check for Rx data */ while ((pmbuf = (pmlan_buffer) util_dequeue_list(pmadapter->pmoal_handle, &pmadapter->rx_data_queue, pmadapter->callbacks. moal_spin_lock, pmadapter->callbacks. moal_spin_unlock))) { util_scalar_decrement(pmadapter->pmoal_handle, &pmadapter->rx_pkts_queued, pmadapter->callbacks.moal_spin_lock, pmadapter->callbacks.moal_spin_unlock); if (pmadapter->delay_task_flag && (util_scalar_read (pmadapter->pmoal_handle, &pmadapter->rx_pkts_queued, pmadapter->callbacks.moal_spin_lock, pmadapter->callbacks.moal_spin_unlock) < LOW_RX_PENDING)) { PRINTM(MEVENT, "Run\n"); pmadapter->delay_task_flag = MFALSE; wlan_recv_event(wlan_get_priv (pmadapter, MLAN_BSS_ROLE_ANY), MLAN_EVENT_ID_DRV_DEFER_HANDLING, MNULL); } wlan_handle_rx_packet(pmadapter, pmbuf); } pcb->moal_spin_lock(pmadapter->pmoal_handle, pmadapter->prx_proc_lock); pmadapter->mlan_rx_processing = MFALSE; pcb->moal_spin_unlock(pmadapter->pmoal_handle, pmadapter->prx_proc_lock); exit_rx_proc: LEAVE(); return ret; }
/** * @brief Aggregate multiple packets into one single AMSDU packet * * @param priv A pointer to mlan_private structure * @param pra_list Pointer to the RA List table containing the pointers * to packets. * @param headroom Any interface specific headroom that may be need. TxPD * will be formed leaving this headroom. * @param ptrindex Pointer index * * @return Final packet size or MLAN_STATUS_FAILURE */ int wlan_11n_aggregate_pkt(mlan_private * priv, raListTbl * pra_list, int headroom, int ptrindex) { int pkt_size = 0; pmlan_adapter pmadapter = priv->adapter; mlan_buffer *pmbuf_aggr, *pmbuf_src; t_u8 *data; int pad = 0; mlan_status ret = MLAN_STATUS_SUCCESS; #ifdef DEBUG_LEVEL1 t_u32 sec = 0, usec = 0; #endif mlan_tx_param tx_param; #ifdef STA_SUPPORT TxPD *ptx_pd = MNULL; #endif t_u32 max_amsdu_size = MIN(pra_list->max_amsdu, pmadapter->tx_buf_size); ENTER(); PRINTM(MDAT_D, "Handling Aggr packet\n"); pmbuf_src = (pmlan_buffer) util_peek_list(pmadapter->pmoal_handle, &pra_list->buf_head, MNULL, MNULL); if (pmbuf_src) { pmbuf_aggr = wlan_alloc_mlan_buffer(pmadapter, pmadapter->tx_buf_size, 0, MOAL_MALLOC_BUFFER); if (!pmbuf_aggr) { PRINTM(MERROR, "Error allocating mlan_buffer\n"); pmadapter->callbacks.moal_spin_unlock(pmadapter-> pmoal_handle, priv->wmm. ra_list_spinlock); LEAVE(); return MLAN_STATUS_FAILURE; } data = pmbuf_aggr->pbuf + headroom; pmbuf_aggr->bss_index = pmbuf_src->bss_index; pmbuf_aggr->buf_type = pmbuf_src->buf_type; pmbuf_aggr->priority = pmbuf_src->priority; pmbuf_aggr->pbuf = data; pmbuf_aggr->data_offset = 0; pmbuf_aggr->in_ts_sec = pmbuf_src->in_ts_sec; pmbuf_aggr->in_ts_usec = pmbuf_src->in_ts_usec; if (pmbuf_src->flags & MLAN_BUF_FLAG_TDLS) pmbuf_aggr->flags |= MLAN_BUF_FLAG_TDLS; /* Form AMSDU */ wlan_11n_form_amsdu_txpd(priv, pmbuf_aggr); pkt_size = sizeof(TxPD); #ifdef STA_SUPPORT if (GET_BSS_ROLE(priv) == MLAN_BSS_ROLE_STA) ptx_pd = (TxPD *) pmbuf_aggr->pbuf; #endif } else { pmadapter->callbacks.moal_spin_unlock(pmadapter->pmoal_handle, priv->wmm. ra_list_spinlock); goto exit; } while (pmbuf_src && ((pkt_size + (pmbuf_src->data_len + LLC_SNAP_LEN) + headroom) <= max_amsdu_size)) { pmbuf_src = (pmlan_buffer) util_dequeue_list(pmadapter->pmoal_handle, &pra_list->buf_head, MNULL, MNULL); pra_list->total_pkts--; /* decrement for every PDU taken from the list */ priv->wmm.pkts_queued[ptrindex]--; util_scalar_decrement(pmadapter->pmoal_handle, &priv->wmm.tx_pkts_queued, MNULL, MNULL); pmadapter->callbacks.moal_spin_unlock(pmadapter->pmoal_handle, priv->wmm. ra_list_spinlock); if (pmbuf_src->flags & MLAN_BUF_FLAG_TCP_ACK) pmadapter->callbacks.moal_tcp_ack_tx_ind(pmadapter-> pmoal_handle, pmbuf_src); pkt_size += wlan_11n_form_amsdu_pkt(pmadapter, (data + pkt_size), pmbuf_src->pbuf + pmbuf_src->data_offset, pmbuf_src->data_len, &pad); DBG_HEXDUMP(MDAT_D, "pmbuf_src", pmbuf_src, sizeof(mlan_buffer)); wlan_write_data_complete(pmadapter, pmbuf_src, MLAN_STATUS_SUCCESS); pmadapter->callbacks.moal_spin_lock(pmadapter->pmoal_handle, priv->wmm.ra_list_spinlock); if (!wlan_is_ralist_valid(priv, pra_list, ptrindex)) { pmadapter->callbacks.moal_spin_unlock(pmadapter-> pmoal_handle, priv->wmm. ra_list_spinlock); LEAVE(); return MLAN_STATUS_FAILURE; } pmbuf_src = (pmlan_buffer) util_peek_list(pmadapter->pmoal_handle, &pra_list->buf_head, MNULL, MNULL); } pmadapter->callbacks.moal_spin_unlock(pmadapter->pmoal_handle, priv->wmm.ra_list_spinlock); /* Last AMSDU packet does not need padding */ pkt_size -= pad; pmbuf_aggr->data_len = pkt_size; wlan_11n_update_pktlen_amsdu_txpd(priv, pmbuf_aggr); pmbuf_aggr->data_len += headroom; pmbuf_aggr->pbuf = data - headroom; tx_param.next_pkt_len = ((pmbuf_src) ? pmbuf_src->data_len + sizeof(TxPD) : 0); ret = wlan_sdio_host_to_card(pmadapter, MLAN_TYPE_DATA, pmbuf_aggr, &tx_param); switch (ret) { case MLAN_STATUS_RESOURCE: pmadapter->callbacks.moal_spin_lock(pmadapter->pmoal_handle, priv->wmm.ra_list_spinlock); if (!wlan_is_ralist_valid(priv, pra_list, ptrindex)) { pmadapter->callbacks.moal_spin_unlock(pmadapter-> pmoal_handle, priv->wmm. ra_list_spinlock); pmbuf_aggr->status_code = MLAN_ERROR_PKT_INVALID; wlan_write_data_complete(pmadapter, pmbuf_aggr, MLAN_STATUS_FAILURE); LEAVE(); return MLAN_STATUS_FAILURE; } #ifdef STA_SUPPORT /* reset tx_lock_flag */ if ((GET_BSS_ROLE(priv) == MLAN_BSS_ROLE_STA) && pmadapter->pps_uapsd_mode && (pmadapter->tx_lock_flag == MTRUE)) { pmadapter->tx_lock_flag = MFALSE; ptx_pd->flags = 0; } #endif util_enqueue_list_head(pmadapter->pmoal_handle, &pra_list->buf_head, (pmlan_linked_list) pmbuf_aggr, MNULL, MNULL); pra_list->total_pkts++; /* add back only one: aggregated packet is requeued as one */ priv->wmm.pkts_queued[ptrindex]++; util_scalar_increment(pmadapter->pmoal_handle, &priv->wmm.tx_pkts_queued, MNULL, MNULL); pmbuf_aggr->flags |= MLAN_BUF_FLAG_REQUEUED_PKT; pmadapter->callbacks.moal_spin_unlock(pmadapter->pmoal_handle, priv->wmm. ra_list_spinlock); PRINTM(MINFO, "MLAN_STATUS_RESOURCE is returned\n"); pmbuf_aggr->status_code = MLAN_ERROR_PKT_INVALID; break; case MLAN_STATUS_FAILURE: pmadapter->data_sent = MFALSE; PRINTM(MERROR, "Error: host_to_card failed: 0x%X\n", ret); pmbuf_aggr->status_code = MLAN_ERROR_DATA_TX_FAIL; pmadapter->dbg.num_tx_host_to_card_failure++; wlan_write_data_complete(pmadapter, pmbuf_aggr, ret); goto exit; case MLAN_STATUS_PENDING: break; case MLAN_STATUS_SUCCESS: wlan_write_data_complete(pmadapter, pmbuf_aggr, ret); break; default: break; } if (ret != MLAN_STATUS_RESOURCE) { pmadapter->callbacks.moal_spin_lock(pmadapter->pmoal_handle, priv->wmm.ra_list_spinlock); if (wlan_is_ralist_valid(priv, pra_list, ptrindex)) { priv->wmm.packets_out[ptrindex]++; priv->wmm.tid_tbl_ptr[ptrindex].ra_list_curr = pra_list; } pmadapter->bssprio_tbl[priv->bss_priority].bssprio_cur = pmadapter->bssprio_tbl[priv->bss_priority].bssprio_cur-> pnext; pmadapter->callbacks.moal_spin_unlock(pmadapter->pmoal_handle, priv->wmm. ra_list_spinlock); } PRINTM_GET_SYS_TIME(MDATA, &sec, &usec); PRINTM_NETINTF(MDATA, priv); PRINTM(MDATA, "%lu.%06lu : Data => FW\n", sec, usec); exit: LEAVE(); return pkt_size + headroom; }