diff options
Diffstat (limited to 'drivers/net/wireless/orinoco.c')
-rw-r--r-- | drivers/net/wireless/orinoco.c | 255 |
1 files changed, 72 insertions, 183 deletions
diff --git a/drivers/net/wireless/orinoco.c b/drivers/net/wireless/orinoco.c index c2d0b09..8a31b59 100644 --- a/drivers/net/wireless/orinoco.c +++ b/drivers/net/wireless/orinoco.c @@ -201,41 +201,12 @@ static struct { /* Data types */ /********************************************************************/ -/* Used in Event handling. - * We avoid nested structures as they break on ARM -- Moustafa */ -struct hermes_tx_descriptor_802_11 { - /* hermes_tx_descriptor */ - __le16 status; - __le16 reserved1; - __le16 reserved2; - __le32 sw_support; - u8 retry_count; - u8 tx_rate; - __le16 tx_control; - - /* ieee80211_hdr */ +/* Beginning of the Tx descriptor, used in TxExc handling */ +struct hermes_txexc_data { + struct hermes_tx_descriptor desc; __le16 frame_ctl; __le16 duration_id; u8 addr1[ETH_ALEN]; - u8 addr2[ETH_ALEN]; - u8 addr3[ETH_ALEN]; - __le16 seq_ctl; - u8 addr4[ETH_ALEN]; - - __le16 data_len; - - /* ethhdr */ - u8 h_dest[ETH_ALEN]; /* destination eth addr */ - u8 h_source[ETH_ALEN]; /* source ether addr */ - __be16 h_proto; /* packet type ID field */ - - /* p8022_hdr */ - u8 dsap; - u8 ssap; - u8 ctrl; - u8 oui[3]; - - __be16 ethertype; } __attribute__ ((packed)); /* Rx frame header except compatibility 802.3 header */ @@ -450,53 +421,39 @@ static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev) hermes_t *hw = &priv->hw; int err = 0; u16 txfid = priv->txfid; - char *p; struct ethhdr *eh; - int len, data_len, data_off; + int data_off; struct hermes_tx_descriptor desc; unsigned long flags; - TRACE_ENTER(dev->name); - if (! netif_running(dev)) { printk(KERN_ERR "%s: Tx on stopped device!\n", dev->name); - TRACE_EXIT(dev->name); - return 1; + return NETDEV_TX_BUSY; } if (netif_queue_stopped(dev)) { printk(KERN_DEBUG "%s: Tx while transmitter busy!\n", dev->name); - TRACE_EXIT(dev->name); - return 1; + return NETDEV_TX_BUSY; } if (orinoco_lock(priv, &flags) != 0) { printk(KERN_ERR "%s: orinoco_xmit() called while hw_unavailable\n", dev->name); - TRACE_EXIT(dev->name); - return 1; + return NETDEV_TX_BUSY; } if (! netif_carrier_ok(dev) || (priv->iw_mode == IW_MODE_MONITOR)) { /* Oops, the firmware hasn't established a connection, silently drop the packet (this seems to be the safest approach). */ - stats->tx_errors++; - orinoco_unlock(priv, &flags); - dev_kfree_skb(skb); - TRACE_EXIT(dev->name); - return 0; + goto drop; } - /* Length of the packet body */ - /* FIXME: what if the skb is smaller than this? */ - len = max_t(int, ALIGN(skb->len, 2), ETH_ZLEN); - skb = skb_padto(skb, len); - if (skb == NULL) - goto fail; - len -= ETH_HLEN; + /* Check packet length */ + if (skb->len < ETH_HLEN) + goto drop; eh = (struct ethhdr *)skb->data; @@ -507,8 +464,7 @@ static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev) if (net_ratelimit()) printk(KERN_ERR "%s: Error %d writing Tx descriptor " "to BAP\n", dev->name, err); - stats->tx_errors++; - goto fail; + goto busy; } /* Clear the 802.11 header and data length fields - some @@ -519,50 +475,38 @@ static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev) /* Encapsulate Ethernet-II frames */ if (ntohs(eh->h_proto) > ETH_DATA_LEN) { /* Ethernet-II frame */ - struct header_struct hdr; - data_len = len; - data_off = HERMES_802_3_OFFSET + sizeof(hdr); - p = skb->data + ETH_HLEN; - - /* 802.3 header */ - memcpy(hdr.dest, eh->h_dest, ETH_ALEN); - memcpy(hdr.src, eh->h_source, ETH_ALEN); - hdr.len = htons(data_len + ENCAPS_OVERHEAD); - - /* 802.2 header */ - memcpy(&hdr.dsap, &encaps_hdr, sizeof(encaps_hdr)); - - hdr.ethertype = eh->h_proto; - err = hermes_bap_pwrite(hw, USER_BAP, &hdr, sizeof(hdr), - txfid, HERMES_802_3_OFFSET); + struct header_struct { + struct ethhdr eth; /* 802.3 header */ + u8 encap[6]; /* 802.2 header */ + } __attribute__ ((packed)) hdr; + + /* Strip destination and source from the data */ + skb_pull(skb, 2 * ETH_ALEN); + data_off = HERMES_802_2_OFFSET + sizeof(encaps_hdr); + + /* And move them to a separate header */ + memcpy(&hdr.eth, eh, 2 * ETH_ALEN); + hdr.eth.h_proto = htons(sizeof(encaps_hdr) + skb->len); + memcpy(hdr.encap, encaps_hdr, sizeof(encaps_hdr)); + + err = hermes_bap_pwrite(hw, USER_BAP, &hdr, sizeof(hdr), + txfid, HERMES_802_3_OFFSET); if (err) { if (net_ratelimit()) printk(KERN_ERR "%s: Error %d writing packet " "header to BAP\n", dev->name, err); - stats->tx_errors++; - goto fail; + goto busy; } - /* Actual xfer length - allow for padding */ - len = ALIGN(data_len, 2); - if (len < ETH_ZLEN - ETH_HLEN) - len = ETH_ZLEN - ETH_HLEN; } else { /* IEEE 802.3 frame */ - data_len = len + ETH_HLEN; data_off = HERMES_802_3_OFFSET; - p = skb->data; - /* Actual xfer length - round up for odd length packets */ - len = ALIGN(data_len, 2); - if (len < ETH_ZLEN) - len = ETH_ZLEN; } - err = hermes_bap_pwrite_pad(hw, USER_BAP, p, data_len, len, + err = hermes_bap_pwrite(hw, USER_BAP, skb->data, skb->len, txfid, data_off); if (err) { printk(KERN_ERR "%s: Error %d writing packet to BAP\n", dev->name, err); - stats->tx_errors++; - goto fail; + goto busy; } /* Finally, we actually initiate the send */ @@ -575,25 +519,27 @@ static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev) if (net_ratelimit()) printk(KERN_ERR "%s: Error %d transmitting packet\n", dev->name, err); - stats->tx_errors++; - goto fail; + goto busy; } dev->trans_start = jiffies; - stats->tx_bytes += data_off + data_len; + stats->tx_bytes += data_off + skb->len; + goto ok; - orinoco_unlock(priv, &flags); + drop: + stats->tx_errors++; + stats->tx_dropped++; + ok: + orinoco_unlock(priv, &flags); dev_kfree_skb(skb); + return NETDEV_TX_OK; - TRACE_EXIT(dev->name); - - return 0; - fail: - TRACE_EXIT(dev->name); - + busy: + if (err == -EIO) + schedule_work(&priv->reset_work); orinoco_unlock(priv, &flags); - return err; + return NETDEV_TX_BUSY; } static void __orinoco_ev_alloc(struct net_device *dev, hermes_t *hw) @@ -629,7 +575,7 @@ static void __orinoco_ev_txexc(struct net_device *dev, hermes_t *hw) struct net_device_stats *stats = &priv->stats; u16 fid = hermes_read_regn(hw, TXCOMPLFID); u16 status; - struct hermes_tx_descriptor_802_11 hdr; + struct hermes_txexc_data hdr; int err = 0; if (fid == DUMMY_FID) @@ -637,8 +583,7 @@ static void __orinoco_ev_txexc(struct net_device *dev, hermes_t *hw) /* Read part of the frame header - we need status and addr1 */ err = hermes_bap_pread(hw, IRQ_BAP, &hdr, - offsetof(struct hermes_tx_descriptor_802_11, - addr2), + sizeof(struct hermes_txexc_data), fid, 0); hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID); @@ -658,7 +603,7 @@ static void __orinoco_ev_txexc(struct net_device *dev, hermes_t *hw) * exceeded, because that's the only status that really mean * that this particular node went away. * Other errors means that *we* screwed up. - Jean II */ - status = le16_to_cpu(hdr.status); + status = le16_to_cpu(hdr.desc.status); if (status & (HERMES_TXSTAT_RETRYERR | HERMES_TXSTAT_AGEDERR)) { union iwreq_data wrqu; @@ -1398,16 +1343,12 @@ int __orinoco_down(struct net_device *dev) return 0; } -int orinoco_reinit_firmware(struct net_device *dev) +static int orinoco_allocate_fid(struct net_device *dev) { struct orinoco_private *priv = netdev_priv(dev); struct hermes *hw = &priv->hw; int err; - err = hermes_init(hw); - if (err) - return err; - err = hermes_allocate(hw, priv->nicbuf_size, &priv->txfid); if (err == -EIO && priv->nicbuf_size > TX_NICBUF_SIZE_BUG) { /* Try workaround for old Symbol firmware bug */ @@ -1426,6 +1367,19 @@ int orinoco_reinit_firmware(struct net_device *dev) return err; } +int orinoco_reinit_firmware(struct net_device *dev) +{ + struct orinoco_private *priv = netdev_priv(dev); + struct hermes *hw = &priv->hw; + int err; + + err = hermes_init(hw); + if (!err) + err = orinoco_allocate_fid(dev); + + return err; +} + static int __orinoco_hw_set_bitrate(struct orinoco_private *priv) { hermes_t *hw = &priv->hw; @@ -1833,7 +1787,9 @@ static int __orinoco_program_rids(struct net_device *dev) /* Set promiscuity / multicast*/ priv->promiscuous = 0; priv->mc_count = 0; - __orinoco_set_multicast_list(dev); /* FIXME: what about the xmit_lock */ + + /* FIXME: what about netif_tx_lock */ + __orinoco_set_multicast_list(dev); return 0; } @@ -2272,14 +2228,12 @@ static int orinoco_init(struct net_device *dev) u16 reclen; int len; - TRACE_ENTER(dev->name); - /* No need to lock, the hw_unavailable flag is already set in * alloc_orinocodev() */ priv->nicbuf_size = IEEE80211_FRAME_LEN + ETH_HLEN; /* Initialize the firmware */ - err = orinoco_reinit_firmware(dev); + err = hermes_init(hw); if (err != 0) { printk(KERN_ERR "%s: failed to initialize firmware (err = %d)\n", dev->name, err); @@ -2337,6 +2291,13 @@ static int orinoco_init(struct net_device *dev) printk(KERN_DEBUG "%s: Station name \"%s\"\n", dev->name, priv->nick); + err = orinoco_allocate_fid(dev); + if (err) { + printk(KERN_ERR "%s: failed to allocate NIC buffer!\n", + dev->name); + goto out; + } + /* Get allowed channels */ err = hermes_read_wordrec(hw, USER_BAP, HERMES_RID_CHANNELLIST, &priv->channel_mask); @@ -2427,7 +2388,6 @@ static int orinoco_init(struct net_device *dev) printk(KERN_DEBUG "%s: ready\n", dev->name); out: - TRACE_EXIT(dev->name); return err; } @@ -2795,8 +2755,6 @@ static int orinoco_ioctl_getiwrange(struct net_device *dev, int numrates; int i, k; - TRACE_ENTER(dev->name); - rrq->length = sizeof(struct iw_range); memset(range, 0, sizeof(struct iw_range)); @@ -2886,8 +2844,6 @@ static int orinoco_ioctl_getiwrange(struct net_device *dev, IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN); IW_EVENT_CAPA_SET(range->event_capa, IWEVTXDROP); - TRACE_EXIT(dev->name); - return 0; } @@ -3069,8 +3025,6 @@ static int orinoco_ioctl_getessid(struct net_device *dev, int err = 0; unsigned long flags; - TRACE_ENTER(dev->name); - if (netif_running(dev)) { err = orinoco_hw_get_essid(priv, &active, essidbuf); if (err) @@ -3085,8 +3039,6 @@ static int orinoco_ioctl_getessid(struct net_device *dev, erq->flags = 1; erq->length = strlen(essidbuf) + 1; - TRACE_EXIT(dev->name); - return 0; } @@ -4347,69 +4299,6 @@ static struct ethtool_ops orinoco_ethtool_ops = { }; /********************************************************************/ -/* Debugging */ -/********************************************************************/ - -#if 0 -static void show_rx_frame(struct orinoco_rxframe_hdr *frame) -{ - printk(KERN_DEBUG "RX descriptor:\n"); - printk(KERN_DEBUG " status = 0x%04x\n", frame->desc.status); - printk(KERN_DEBUG " time = 0x%08x\n", frame->desc.time); - printk(KERN_DEBUG " silence = 0x%02x\n", frame->desc.silence); - printk(KERN_DEBUG " signal = 0x%02x\n", frame->desc.signal); - printk(KERN_DEBUG " rate = 0x%02x\n", frame->desc.rate); - printk(KERN_DEBUG " rxflow = 0x%02x\n", frame->desc.rxflow); - printk(KERN_DEBUG " reserved = 0x%08x\n", frame->desc.reserved); - - printk(KERN_DEBUG "IEEE 802.11 header:\n"); - printk(KERN_DEBUG " frame_ctl = 0x%04x\n", - frame->p80211.frame_ctl); - printk(KERN_DEBUG " duration_id = 0x%04x\n", - frame->p80211.duration_id); - printk(KERN_DEBUG " addr1 = %02x:%02x:%02x:%02x:%02x:%02x\n", - frame->p80211.addr1[0], frame->p80211.addr1[1], - frame->p80211.addr1[2], frame->p80211.addr1[3], - frame->p80211.addr1[4], frame->p80211.addr1[5]); - printk(KERN_DEBUG " addr2 = %02x:%02x:%02x:%02x:%02x:%02x\n", - frame->p80211.addr2[0], frame->p80211.addr2[1], - frame->p80211.addr2[2], frame->p80211.addr2[3], - frame->p80211.addr2[4], frame->p80211.addr2[5]); - printk(KERN_DEBUG " addr3 = %02x:%02x:%02x:%02x:%02x:%02x\n", - frame->p80211.addr3[0], frame->p80211.addr3[1], - frame->p80211.addr3[2], frame->p80211.addr3[3], - frame->p80211.addr3[4], frame->p80211.addr3[5]); - printk(KERN_DEBUG " seq_ctl = 0x%04x\n", - frame->p80211.seq_ctl); - printk(KERN_DEBUG " addr4 = %02x:%02x:%02x:%02x:%02x:%02x\n", - frame->p80211.addr4[0], frame->p80211.addr4[1], - frame->p80211.addr4[2], frame->p80211.addr4[3], - frame->p80211.addr4[4], frame->p80211.addr4[5]); - printk(KERN_DEBUG " data_len = 0x%04x\n", - frame->p80211.data_len); - - printk(KERN_DEBUG "IEEE 802.3 header:\n"); - printk(KERN_DEBUG " dest = %02x:%02x:%02x:%02x:%02x:%02x\n", - frame->p8023.h_dest[0], frame->p8023.h_dest[1], - frame->p8023.h_dest[2], frame->p8023.h_dest[3], - frame->p8023.h_dest[4], frame->p8023.h_dest[5]); - printk(KERN_DEBUG " src = %02x:%02x:%02x:%02x:%02x:%02x\n", - frame->p8023.h_source[0], frame->p8023.h_source[1], - frame->p8023.h_source[2], frame->p8023.h_source[3], - frame->p8023.h_source[4], frame->p8023.h_source[5]); - printk(KERN_DEBUG " len = 0x%04x\n", frame->p8023.h_proto); - - printk(KERN_DEBUG "IEEE 802.2 LLC/SNAP header:\n"); - printk(KERN_DEBUG " DSAP = 0x%02x\n", frame->p8022.dsap); - printk(KERN_DEBUG " SSAP = 0x%02x\n", frame->p8022.ssap); - printk(KERN_DEBUG " ctrl = 0x%02x\n", frame->p8022.ctrl); - printk(KERN_DEBUG " OUI = %02x:%02x:%02x\n", - frame->p8022.oui[0], frame->p8022.oui[1], frame->p8022.oui[2]); - printk(KERN_DEBUG " ethertype = 0x%04x\n", frame->ethertype); -} -#endif /* 0 */ - -/********************************************************************/ /* Module initialization */ /********************************************************************/ |