diff options
Diffstat (limited to 'drivers/staging/r8188eu/core/rtw_xmit.c')
-rw-r--r-- | drivers/staging/r8188eu/core/rtw_xmit.c | 269 |
1 files changed, 239 insertions, 30 deletions
diff --git a/drivers/staging/r8188eu/core/rtw_xmit.c b/drivers/staging/r8188eu/core/rtw_xmit.c index 24401f3ae2a0..873d2c5c3634 100644 --- a/drivers/staging/r8188eu/core/rtw_xmit.c +++ b/drivers/staging/r8188eu/core/rtw_xmit.c @@ -33,6 +33,32 @@ void _rtw_init_sta_xmit_priv(struct sta_xmit_priv *psta_xmitpriv) INIT_LIST_HEAD(&psta_xmitpriv->apsd); } +static int rtw_xmit_resource_alloc(struct adapter *padapter, struct xmit_buf *pxmitbuf, + u32 alloc_sz) +{ + pxmitbuf->pallocated_buf = kzalloc(alloc_sz, GFP_KERNEL); + if (!pxmitbuf->pallocated_buf) + return _FAIL; + + pxmitbuf->pbuf = (u8 *)ALIGN((size_t)(pxmitbuf->pallocated_buf), XMITBUF_ALIGN_SZ); + pxmitbuf->dma_transfer_addr = 0; + + pxmitbuf->pxmit_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!pxmitbuf->pxmit_urb) { + kfree(pxmitbuf->pallocated_buf); + return _FAIL; + } + + return _SUCCESS; +} + +static void rtw_xmit_resource_free(struct adapter *padapter, struct xmit_buf *pxmitbuf, + u32 free_sz) +{ + usb_free_urb(pxmitbuf->pxmit_urb); + kfree(pxmitbuf->pallocated_buf); +} + s32 _rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter) { int i; @@ -108,7 +134,7 @@ s32 _rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter) if (!pxmitpriv->pallocated_xmitbuf) { res = _FAIL; - goto exit; + goto free_frame_buf; } pxmitpriv->pxmitbuf = (u8 *)ALIGN((size_t)(pxmitpriv->pallocated_xmitbuf), 4); @@ -125,12 +151,12 @@ s32 _rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter) pxmitbuf->ext_tag = false; /* Tx buf allocation may fail sometimes, so sleep and retry. */ - res = rtw_os_xmit_resource_alloc(padapter, pxmitbuf, (MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ)); + res = rtw_xmit_resource_alloc(padapter, pxmitbuf, (MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ)); if (res == _FAIL) { msleep(10); - res = rtw_os_xmit_resource_alloc(padapter, pxmitbuf, (MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ)); + res = rtw_xmit_resource_alloc(padapter, pxmitbuf, (MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ)); if (res == _FAIL) - goto exit; + goto free_xmitbuf; } pxmitbuf->flags = XMIT_VO_QUEUE; @@ -148,7 +174,7 @@ s32 _rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter) if (!pxmitpriv->pallocated_xmit_extbuf) { res = _FAIL; - goto exit; + goto free_xmitbuf; } pxmitpriv->pxmit_extbuf = (u8 *)ALIGN((size_t)(pxmitpriv->pallocated_xmit_extbuf), 4); @@ -162,10 +188,10 @@ s32 _rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter) pxmitbuf->padapter = padapter; pxmitbuf->ext_tag = true; - res = rtw_os_xmit_resource_alloc(padapter, pxmitbuf, max_xmit_extbuf_size + XMITBUF_ALIGN_SZ); + res = rtw_xmit_resource_alloc(padapter, pxmitbuf, max_xmit_extbuf_size + XMITBUF_ALIGN_SZ); if (res == _FAIL) { res = _FAIL; - goto exit; + goto free_xmit_extbuf; } list_add_tail(&pxmitbuf->list, &pxmitpriv->free_xmit_extbuf_queue.queue); @@ -176,7 +202,7 @@ s32 _rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter) if (rtw_alloc_hwxmits(padapter)) { res = _FAIL; - goto exit; + goto free_xmit_extbuf; } rtw_init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry); @@ -200,11 +226,54 @@ s32 _rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter) rtl8188eu_init_xmit_priv(padapter); -exit: + return _SUCCESS; +free_xmit_extbuf: + pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmit_extbuf; + while (i--) { + rtw_xmit_resource_free(padapter, pxmitbuf, (max_xmit_extbuf_size + XMITBUF_ALIGN_SZ)); + pxmitbuf++; + } + vfree(pxmitpriv->pallocated_xmit_extbuf); + i = NR_XMITBUFF; +free_xmitbuf: + pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf; + while (i--) { + rtw_xmit_resource_free(padapter, pxmitbuf, (MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ)); + pxmitbuf++; + } + vfree(pxmitpriv->pallocated_xmitbuf); +free_frame_buf: + vfree(pxmitpriv->pallocated_frame_buf); +exit: return res; } +static void rtw_pkt_complete(struct adapter *padapter, struct sk_buff *pkt) +{ + u16 queue; + struct xmit_priv *pxmitpriv = &padapter->xmitpriv; + + queue = skb_get_queue_mapping(pkt); + if (padapter->registrypriv.wifi_spec) { + if (__netif_subqueue_stopped(padapter->pnetdev, queue) && + (pxmitpriv->hwxmits[queue].accnt < WMM_XMIT_THRESHOLD)) + netif_wake_subqueue(padapter->pnetdev, queue); + } else { + if (__netif_subqueue_stopped(padapter->pnetdev, queue)) + netif_wake_subqueue(padapter->pnetdev, queue); + } + + dev_kfree_skb_any(pkt); +} + +void rtw_xmit_complete(struct adapter *padapter, struct xmit_frame *pxframe) +{ + if (pxframe->pkt) + rtw_pkt_complete(padapter, pxframe->pkt); + pxframe->pkt = NULL; +} + void _rtw_free_xmit_priv(struct xmit_priv *pxmitpriv) { int i; @@ -218,13 +287,13 @@ void _rtw_free_xmit_priv(struct xmit_priv *pxmitpriv) return; for (i = 0; i < NR_XMITFRAME; i++) { - rtw_os_xmit_complete(padapter, pxmitframe); + rtw_xmit_complete(padapter, pxmitframe); pxmitframe++; } for (i = 0; i < NR_XMITBUFF; i++) { - rtw_os_xmit_resource_free(padapter, pxmitbuf, (MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ)); + rtw_xmit_resource_free(padapter, pxmitbuf, (MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ)); pxmitbuf++; } @@ -234,7 +303,7 @@ void _rtw_free_xmit_priv(struct xmit_priv *pxmitpriv) pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmit_extbuf; for (i = 0; i < num_xmit_extbuf; i++) { - rtw_os_xmit_resource_free(padapter, pxmitbuf, (max_xmit_extbuf_size + XMITBUF_ALIGN_SZ)); + rtw_xmit_resource_free(padapter, pxmitbuf, (max_xmit_extbuf_size + XMITBUF_ALIGN_SZ)); pxmitbuf++; } @@ -378,18 +447,59 @@ u8 qos_acm(u8 acm_mask, u8 priority) return change_priority; } +static void rtw_open_pktfile(struct sk_buff *pktptr, struct pkt_file *pfile) +{ + if (!pktptr) { + pr_err("8188eu: pktptr is NULL\n"); + return; + } + if (!pfile) { + pr_err("8188eu: pfile is NULL\n"); + return; + } + pfile->pkt = pktptr; + pfile->cur_addr = pktptr->data; + pfile->buf_start = pktptr->data; + pfile->pkt_len = pktptr->len; + pfile->buf_len = pktptr->len; + + pfile->cur_buffer = pfile->buf_start; +} + +static uint rtw_remainder_len(struct pkt_file *pfile) +{ + return pfile->buf_len - ((size_t)(pfile->cur_addr) - + (size_t)(pfile->buf_start)); +} + +static uint rtw_pktfile_read(struct pkt_file *pfile, u8 *rmem, uint rlen) +{ + uint len; + + len = rtw_remainder_len(pfile); + len = (rlen > len) ? len : rlen; + + if (rmem) + skb_copy_bits(pfile->pkt, pfile->buf_len - pfile->pkt_len, rmem, len); + + pfile->cur_addr += len; + pfile->pkt_len -= len; + + return len; +} + static void set_qos(struct pkt_file *ppktfile, struct pkt_attrib *pattrib) { struct ethhdr etherhdr; struct iphdr ip_hdr; s32 user_prio = 0; - _rtw_open_pktfile(ppktfile->pkt, ppktfile); - _rtw_pktfile_read(ppktfile, (unsigned char *)ðerhdr, ETH_HLEN); + rtw_open_pktfile(ppktfile->pkt, ppktfile); + rtw_pktfile_read(ppktfile, (unsigned char *)ðerhdr, ETH_HLEN); /* get user_prio from IP hdr */ if (pattrib->ether_type == 0x0800) { - _rtw_pktfile_read(ppktfile, (u8 *)&ip_hdr, sizeof(ip_hdr)); + rtw_pktfile_read(ppktfile, (u8 *)&ip_hdr, sizeof(ip_hdr)); /* user_prio = (ntohs(ip_hdr.tos) >> 5) & 0x3; */ user_prio = ip_hdr.tos >> 5; } else if (pattrib->ether_type == 0x888e) { @@ -418,8 +528,8 @@ static s32 update_attrib(struct adapter *padapter, struct sk_buff *pkt, struct p - _rtw_open_pktfile(pkt, &pktfile); - _rtw_pktfile_read(&pktfile, (u8 *)ðerhdr, ETH_HLEN); + rtw_open_pktfile(pkt, &pktfile); + rtw_pktfile_read(&pktfile, (u8 *)ðerhdr, ETH_HLEN); pattrib->ether_type = ntohs(etherhdr.h_proto); @@ -447,7 +557,7 @@ static s32 update_attrib(struct adapter *padapter, struct sk_buff *pkt, struct p /* to prevent DHCP protocol fail */ u8 tmp[24]; - _rtw_pktfile_read(&pktfile, &tmp[0], 24); + rtw_pktfile_read(&pktfile, &tmp[0], 24); pattrib->dhcp_pkt = 0; if (pktfile.pkt_len > 282) {/* MINIMUM_DHCP_PACKET_SIZE) { */ if (((tmp[21] == 68) && (tmp[23] == 67)) || @@ -460,9 +570,6 @@ static s32 update_attrib(struct adapter *padapter, struct sk_buff *pkt, struct p } } - if ((pattrib->ether_type == 0x888e) || (pattrib->dhcp_pkt == 1)) - rtw_set_scan_deny(padapter, 3000); - /* If EAPOL , ARP , OR DHCP packet, driver must be in active mode. */ if ((pattrib->ether_type == 0x0806) || (pattrib->ether_type == 0x888e) || (pattrib->dhcp_pkt == 1)) rtw_lps_ctrl_wk_cmd(padapter, LPS_CTRL_SPECIAL_PACKET, 1); @@ -897,8 +1004,8 @@ s32 rtw_xmitframe_coalesce(struct adapter *padapter, struct sk_buff *pkt, struct goto exit; } - _rtw_open_pktfile(pkt, &pktfile); - _rtw_pktfile_read(&pktfile, NULL, pattrib->pkt_hdrlen); + rtw_open_pktfile(pkt, &pktfile); + rtw_pktfile_read(&pktfile, NULL, pattrib->pkt_hdrlen); frg_inx = 0; frg_len = pxmitpriv->frag_len - 4;/* 2346-4 = 2342 */ @@ -956,9 +1063,9 @@ s32 rtw_xmitframe_coalesce(struct adapter *padapter, struct sk_buff *pkt, struct if (bmcst) { /* don't do fragment to broadcast/multicast packets */ - mem_sz = _rtw_pktfile_read(&pktfile, pframe, pattrib->pktlen); + mem_sz = rtw_pktfile_read(&pktfile, pframe, pattrib->pktlen); } else { - mem_sz = _rtw_pktfile_read(&pktfile, pframe, mpdu_len); + mem_sz = rtw_pktfile_read(&pktfile, pframe, mpdu_len); } pframe += mem_sz; @@ -970,7 +1077,7 @@ s32 rtw_xmitframe_coalesce(struct adapter *padapter, struct sk_buff *pkt, struct frg_inx++; - if (bmcst || rtw_endofpktfile(&pktfile)) { + if (bmcst || pktfile.pkt_len == 0) { pattrib->nr_frags = frg_inx; pattrib->last_txcmdsz = pattrib->hdrlen + pattrib->iv_len + ((pattrib->nr_frags == 1) ? llc_sz : 0) + @@ -1286,7 +1393,7 @@ s32 rtw_free_xmitframe(struct xmit_priv *pxmitpriv, struct xmit_frame *pxmitfram spin_unlock_bh(&pfree_xmit_queue->lock); if (pndis_pkt) - rtw_os_pkt_complete(padapter, pndis_pkt); + rtw_pkt_complete(padapter, pndis_pkt); exit: @@ -1945,7 +2052,7 @@ void wakeup_sta_to_xmit(struct adapter *padapter, struct sta_info *psta) spin_unlock_bh(&psta->sleep_q.lock); if (rtl8188eu_hal_xmit(padapter, pxmitframe)) - rtw_os_xmit_complete(padapter, pxmitframe); + rtw_xmit_complete(padapter, pxmitframe); spin_lock_bh(&psta->sleep_q.lock); } @@ -1995,7 +2102,7 @@ void wakeup_sta_to_xmit(struct adapter *padapter, struct sta_info *psta) spin_unlock_bh(&psta_bmc->sleep_q.lock); if (rtl8188eu_hal_xmit(padapter, pxmitframe)) - rtw_os_xmit_complete(padapter, pxmitframe); + rtw_xmit_complete(padapter, pxmitframe); spin_lock_bh(&psta_bmc->sleep_q.lock); } @@ -2069,7 +2176,7 @@ void xmit_delivery_enabled_frames(struct adapter *padapter, struct sta_info *pst pxmitframe->attrib.triggered = 1; if (rtl8188eu_hal_xmit(padapter, pxmitframe)) - rtw_os_xmit_complete(padapter, pxmitframe); + rtw_xmit_complete(padapter, pxmitframe); if ((psta->sleepq_ac_len == 0) && (!psta->has_legacy_ac) && (wmmps_ac)) { pstapriv->tim_bitmap &= ~BIT(psta->aid); @@ -2136,3 +2243,105 @@ void rtw_ack_tx_done(struct xmit_priv *pxmitpriv, int status) if (pxmitpriv->ack_tx) rtw_sctx_done_err(&pack_tx_ops, status); } + +static void rtw_check_xmit_resource(struct adapter *padapter, struct sk_buff *pkt) +{ + struct xmit_priv *pxmitpriv = &padapter->xmitpriv; + u16 queue; + + queue = skb_get_queue_mapping(pkt); + if (padapter->registrypriv.wifi_spec) { + /* No free space for Tx, tx_worker is too slow */ + if (pxmitpriv->hwxmits[queue].accnt > WMM_XMIT_THRESHOLD) + netif_stop_subqueue(padapter->pnetdev, queue); + } else { + if (pxmitpriv->free_xmitframe_cnt <= 4) { + if (!netif_tx_queue_stopped(netdev_get_tx_queue(padapter->pnetdev, queue))) + netif_stop_subqueue(padapter->pnetdev, queue); + } + } +} + +static int rtw_mlcst2unicst(struct adapter *padapter, struct sk_buff *skb) +{ + struct sta_priv *pstapriv = &padapter->stapriv; + struct xmit_priv *pxmitpriv = &padapter->xmitpriv; + struct list_head *phead, *plist; + struct sk_buff *newskb; + struct sta_info *psta = NULL; + s32 res; + + spin_lock_bh(&pstapriv->asoc_list_lock); + phead = &pstapriv->asoc_list; + plist = phead->next; + + /* free sta asoc_queue */ + while (phead != plist) { + psta = container_of(plist, struct sta_info, asoc_list); + + plist = plist->next; + + /* avoid come from STA1 and send back STA1 */ + if (!memcmp(psta->hwaddr, &skb->data[6], 6)) + continue; + + newskb = skb_copy(skb, GFP_ATOMIC); + + if (newskb) { + memcpy(newskb->data, psta->hwaddr, 6); + res = rtw_xmit(padapter, &newskb); + if (res < 0) { + pxmitpriv->tx_drop++; + dev_kfree_skb_any(newskb); + } else { + pxmitpriv->tx_pkts++; + } + } else { + pxmitpriv->tx_drop++; + + spin_unlock_bh(&pstapriv->asoc_list_lock); + return false; /* Caller shall tx this multicast frame via normal way. */ + } + } + + spin_unlock_bh(&pstapriv->asoc_list_lock); + dev_kfree_skb_any(skb); + return true; +} + +netdev_tx_t rtw_xmit_entry(struct sk_buff *pkt, struct net_device *pnetdev) +{ + struct adapter *padapter = (struct adapter *)rtw_netdev_priv(pnetdev); + struct xmit_priv *pxmitpriv = &padapter->xmitpriv; + struct mlme_priv *pmlmepriv = &padapter->mlmepriv; + s32 res = 0; + + if (!rtw_if_up(padapter)) + goto drop_packet; + + rtw_check_xmit_resource(padapter, pkt); + + if (!rtw_mc2u_disable && check_fwstate(pmlmepriv, WIFI_AP_STATE) && + (IP_MCAST_MAC(pkt->data) || ICMPV6_MCAST_MAC(pkt->data)) && + (padapter->registrypriv.wifi_spec == 0)) { + if (pxmitpriv->free_xmitframe_cnt > (NR_XMITFRAME / 4)) { + res = rtw_mlcst2unicst(padapter, pkt); + if (res) + goto exit; + } + } + + res = rtw_xmit(padapter, &pkt); + if (res < 0) + goto drop_packet; + + pxmitpriv->tx_pkts++; + goto exit; + +drop_packet: + pxmitpriv->tx_drop++; + dev_kfree_skb_any(pkt); + +exit: + return NETDEV_TX_OK; +} |