17 files changed, 113 insertions, 35 deletions

diff --git a/drivers/net/ehea/ehea.h b/drivers/net/ehea/ehea.h
index fe872fbd671e..e01926b7b5b7 100644
--- a/drivers/net/ehea/ehea.h
+++ b/drivers/net/ehea/ehea.h
@@ -40,7 +40,7 @@
 #include <asm/io.h>
 
 #define DRV_NAME        "ehea"
-#define DRV_VERSION     "EHEA_0091"
+#define DRV_VERSION     "EHEA_0092"
 
 /* eHEA capability flags */
 #define DLPAR_PORT_ADD_REM 1
@@ -452,7 +452,7 @@ struct ehea_bcmc_reg_entry {
 struct ehea_bcmc_reg_array {
         struct ehea_bcmc_reg_entry *arr;
         int num_entries;
-        struct mutex lock;
+        spinlock_t lock;
 };
 
 #define EHEA_PORT_UP 1
@@ -478,6 +478,7 @@ struct ehea_port {
         int num_add_tx_qps;
         int num_mcs;
         int resets;
+        u64 flags;
         u64 mac_addr;
         u32 logical_port_id;
         u32 port_speed;
@@ -501,7 +502,8 @@ struct port_res_cfg {
 };
 
 enum ehea_flag_bits {
-        __EHEA_STOP_XFER
+        __EHEA_STOP_XFER,
+        __EHEA_DISABLE_PORT_RESET
 };
 
 void ehea_set_ethtool_ops(struct net_device *netdev);
diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c
index 075fd547421e..0920b796bd78 100644
--- a/drivers/net/ehea/ehea_main.c
+++ b/drivers/net/ehea/ehea_main.c
@@ -118,6 +118,7 @@ static struct of_device_id ehea_device_table[] = {
         },
         {},
 };
+MODULE_DEVICE_TABLE(of, ehea_device_table);
 
 static struct of_platform_driver ehea_driver = {
         .name = "ehea",
@@ -137,6 +138,12 @@ void ehea_dump(void *adr, int len, char *msg)
         }
 }
 
+void ehea_schedule_port_reset(struct ehea_port *port)
+{
+        if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
+                schedule_work(&port->reset_task);
+}
+
 static void ehea_update_firmware_handles(void)
 {
         struct ehea_fw_handle_entry *arr = NULL;
@@ -241,7 +248,7 @@ static void ehea_update_bcmc_registrations(void)
                 }
 
         if (num_registrations) {
-                arr = kzalloc(num_registrations * sizeof(*arr), GFP_KERNEL);
+                arr = kzalloc(num_registrations * sizeof(*arr), GFP_ATOMIC);
                 if (!arr)
                         return;  /* Keep the existing array */
         } else
@@ -301,7 +308,7 @@ static struct net_device_stats *ehea_get_stats(struct net_device *dev)
 
         memset(stats, 0, sizeof(*stats));
 
-        cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL);
+        cb2 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
         if (!cb2) {
                 ehea_error("no mem for cb2");
                 goto out;
@@ -587,7 +594,7 @@ static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
                                    "Resetting port.", pr->qp->init_attr.qp_nr);
                         ehea_dump(cqe, sizeof(*cqe), "CQE");
                 }
-                schedule_work(&pr->port->reset_task);
+                ehea_schedule_port_reset(pr->port);
                 return 1;
         }
 
@@ -616,7 +623,7 @@ static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
         *tcph = tcp_hdr(skb);
 
         /* check if ip header and tcp header are complete */
-        if (iph->tot_len < ip_len + tcp_hdrlen(skb))
+        if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
                 return -1;
 
         *hdr_flags = LRO_IPV4 | LRO_TCP;
@@ -765,7 +772,7 @@ static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
                         ehea_error("Send Completion Error: Resetting port");
                         if (netif_msg_tx_err(pr->port))
                                 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
-                        schedule_work(&pr->port->reset_task);
+                        ehea_schedule_port_reset(pr->port);
                         break;
                 }
 
@@ -885,7 +892,7 @@ static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
                 eqe = ehea_poll_eq(port->qp_eq);
         }
 
-        schedule_work(&port->reset_task);
+        ehea_schedule_port_reset(port);
 
         return IRQ_HANDLED;
 }
@@ -1763,7 +1770,7 @@ static int ehea_set_mac_addr(struct net_device *dev, void *sa)
 
         memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
 
-        mutex_lock(&ehea_bcmc_regs.lock);
+        spin_lock(&ehea_bcmc_regs.lock);
 
         /* Deregister old MAC in pHYP */
         if (port->state == EHEA_PORT_UP) {
@@ -1785,7 +1792,7 @@ static int ehea_set_mac_addr(struct net_device *dev, void *sa)
 
 out_upregs:
         ehea_update_bcmc_registrations();
-        mutex_unlock(&ehea_bcmc_regs.lock);
+        spin_unlock(&ehea_bcmc_regs.lock);
 out_free:
         kfree(cb0);
 out:
@@ -1947,7 +1954,7 @@ static void ehea_set_multicast_list(struct net_device *dev)
         }
         ehea_promiscuous(dev, 0);
 
-        mutex_lock(&ehea_bcmc_regs.lock);
+        spin_lock(&ehea_bcmc_regs.lock);
 
         if (dev->flags & IFF_ALLMULTI) {
                 ehea_allmulti(dev, 1);
@@ -1978,7 +1985,7 @@ static void ehea_set_multicast_list(struct net_device *dev)
         }
 out:
         ehea_update_bcmc_registrations();
-        mutex_unlock(&ehea_bcmc_regs.lock);
+        spin_unlock(&ehea_bcmc_regs.lock);
         return;
 }
 
@@ -2497,7 +2504,7 @@ static int ehea_up(struct net_device *dev)
                 }
         }
 
-        mutex_lock(&ehea_bcmc_regs.lock);
+        spin_lock(&ehea_bcmc_regs.lock);
 
         ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
         if (ret) {
@@ -2520,7 +2527,7 @@ out:
                 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
 
         ehea_update_bcmc_registrations();
-        mutex_unlock(&ehea_bcmc_regs.lock);
+        spin_unlock(&ehea_bcmc_regs.lock);
 
         ehea_update_firmware_handles();
         mutex_unlock(&ehea_fw_handles.lock);
@@ -2575,7 +2582,7 @@ static int ehea_down(struct net_device *dev)
 
         mutex_lock(&ehea_fw_handles.lock);
 
-        mutex_lock(&ehea_bcmc_regs.lock);
+        spin_lock(&ehea_bcmc_regs.lock);
         ehea_drop_multicast_list(dev);
         ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
 
@@ -2584,7 +2591,7 @@ static int ehea_down(struct net_device *dev)
         port->state = EHEA_PORT_DOWN;
 
         ehea_update_bcmc_registrations();
-        mutex_unlock(&ehea_bcmc_regs.lock);
+        spin_unlock(&ehea_bcmc_regs.lock);
 
         ret = ehea_clean_all_portres(port);
         if (ret)
@@ -2605,13 +2612,14 @@ static int ehea_stop(struct net_device *dev)
         if (netif_msg_ifdown(port))
                 ehea_info("disabling port %s", dev->name);
 
+        set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
         cancel_work_sync(&port->reset_task);
-
         mutex_lock(&port->port_lock);
         netif_stop_queue(dev);
         port_napi_disable(port);
         ret = ehea_down(dev);
         mutex_unlock(&port->port_lock);
+        clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
         return ret;
 }
 
@@ -2941,7 +2949,7 @@ static void ehea_tx_watchdog(struct net_device *dev)
 
         if (netif_carrier_ok(dev) &&
             !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
-                schedule_work(&port->reset_task);
+                ehea_schedule_port_reset(port);
 }
 
 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
@@ -3590,7 +3598,7 @@ int __init ehea_module_init(void)
         memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
 
         mutex_init(&ehea_fw_handles.lock);
-        mutex_init(&ehea_bcmc_regs.lock);
+        spin_lock_init(&ehea_bcmc_regs.lock);
 
         ret = check_module_parm();
         if (ret)
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index 2cb244763292..20d4fe96a81c 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -4194,12 +4194,23 @@ static int nv_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
 
         netif_carrier_off(dev);
         if (netif_running(dev)) {
+                unsigned long flags;
+
                 nv_disable_irq(dev);
                 netif_tx_lock_bh(dev);
-                spin_lock(&np->lock);
+                /* with plain spinlock lockdep complains */
+                spin_lock_irqsave(&np->lock, flags);
                 /* stop engines */
+                /* FIXME:
+                 * this can take some time, and interrupts are disabled
+                 * due to spin_lock_irqsave, but let's hope no daemon
+                 * is going to change the settings very often...
+                 * Worst case:
+                 * NV_RXSTOP_DELAY1MAX + NV_TXSTOP_DELAY1MAX
+                 * + some minor delays, which is up to a second approximately
+                 */
                 nv_stop_rxtx(dev);
-                spin_unlock(&np->lock);
+                spin_unlock_irqrestore(&np->lock, flags);
                 netif_tx_unlock_bh(dev);
         }
 
diff --git a/drivers/net/fs_enet/mac-fcc.c b/drivers/net/fs_enet/mac-fcc.c
index e36321152d50..8268b3535b30 100644
--- a/drivers/net/fs_enet/mac-fcc.c
+++ b/drivers/net/fs_enet/mac-fcc.c
@@ -463,6 +463,9 @@ static void restart(struct net_device *dev)
         else
                 C32(fccp, fcc_fpsmr, FCC_PSMR_FDE | FCC_PSMR_LPB);
 
+        /* Restore multicast and promiscuous settings */
+        set_multicast_list(dev);
+
         S32(fccp, fcc_gfmr, FCC_GFMR_ENR | FCC_GFMR_ENT);
 }
 
diff --git a/drivers/net/ibm_newemac/core.c b/drivers/net/ibm_newemac/core.c
index 5d2108c5ac7c..babc79ad490b 100644
--- a/drivers/net/ibm_newemac/core.c
+++ b/drivers/net/ibm_newemac/core.c
@@ -1636,6 +1636,12 @@ static int emac_poll_rx(void *param, int budget)
                         goto next;
                 }
 
+                if (len < ETH_HLEN) {
+                        ++dev->estats.rx_dropped_stack;
+                        emac_recycle_rx_skb(dev, slot, len);
+                        goto next;
+                }
+
                 if (len && len < EMAC_RX_COPY_THRESH) {
                         struct sk_buff *copy_skb =
                             alloc_skb(len + EMAC_RX_SKB_HEADROOM + 2, GFP_ATOMIC);
@@ -2719,6 +2725,8 @@ static int __devinit emac_probe(struct of_device *ofdev,
         /* Clean rings */
         memset(dev->tx_desc, 0, NUM_TX_BUFF * sizeof(struct mal_descriptor));
         memset(dev->rx_desc, 0, NUM_RX_BUFF * sizeof(struct mal_descriptor));
+        memset(dev->tx_skb, 0, NUM_TX_BUFF * sizeof(struct sk_buff *));
+        memset(dev->rx_skb, 0, NUM_RX_BUFF * sizeof(struct sk_buff *));
 
         /* Attach to ZMII, if needed */
         if (emac_has_feature(dev, EMAC_FTR_HAS_ZMII) &&
diff --git a/drivers/net/pasemi_mac.c b/drivers/net/pasemi_mac.c
index 3b2a6c598088..993d87c9296f 100644
--- a/drivers/net/pasemi_mac.c
+++ b/drivers/net/pasemi_mac.c
@@ -277,7 +277,7 @@ static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
         *tcph = tcp_hdr(skb);
 
         /* check if ip header and tcp header are complete */
-        if (iph->tot_len < ip_len + tcp_hdrlen(skb))
+        if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
                 return -1;
 
         *hdr_flags = LRO_IPV4 | LRO_TCP;
diff --git a/drivers/net/wan/hdlc_fr.c b/drivers/net/wan/hdlc_fr.c
index 520bb0b1a9a2..6d35155c7145 100644
--- a/drivers/net/wan/hdlc_fr.c
+++ b/drivers/net/wan/hdlc_fr.c
@@ -1008,6 +1008,7 @@ static int fr_rx(struct sk_buff *skb)
                 stats->rx_bytes += skb->len;
                 if (pvc->state.becn)
                         stats->rx_compressed++;
+                skb->dev = dev;
                 netif_rx(skb);
                 return NET_RX_SUCCESS;
         } else {
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c
index 62a3d8f8563e..f5387a7a76c0 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.c
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.c
@@ -588,8 +588,12 @@ static void iwl3945_add_radiotap(struct iwl3945_priv *priv,
 
         if (rate == -1)
                 iwl3945_rt->rt_rate = 0;
-        else
+        else {
+                if (stats->band == IEEE80211_BAND_5GHZ)
+                        rate += IWL_FIRST_OFDM_RATE;
+
                 iwl3945_rt->rt_rate = iwl3945_rates[rate].ieee;
+        }
 
         /* antenna number */
         antenna = phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK;
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
index bf19eb8aafd0..de330ae0ca95 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -3528,8 +3528,12 @@ static void iwl4965_add_radiotap(struct iwl_priv *priv,
 
         if (rate == -1)
                 iwl4965_rt->rt_rate = 0;
-        else
+        else {
+                if (stats->band == IEEE80211_BAND_5GHZ)
+                        rate += IWL_FIRST_OFDM_RATE;
+
                 iwl4965_rt->rt_rate = iwl4965_rates[rate].ieee;
+        }
 
         /*
          * "antenna number"
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index b1b3c523185d..6027e1119c3f 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -6687,7 +6687,8 @@ static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
 
         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
                 IWL_DEBUG_MAC80211("leave - monitor\n");
-                return -1;
+                dev_kfree_skb_any(skb);
+                return 0;
         }
 
         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index 5ed16ce78468..0bd55bb19739 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -6237,7 +6237,8 @@ static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
 
         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
                 IWL_DEBUG_MAC80211("leave - monitor\n");
-                return -1;
+                dev_kfree_skb_any(skb);
+                return 0;
         }
 
         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
diff --git a/drivers/net/wireless/libertas/if_usb.c b/drivers/net/wireless/libertas/if_usb.c
index 8032df72aaab..36288b29abf7 100644
--- a/drivers/net/wireless/libertas/if_usb.c
+++ b/drivers/net/wireless/libertas/if_usb.c
@@ -925,6 +925,7 @@ static struct usb_driver if_usb_driver = {
         .id_table = if_usb_table,
         .suspend = if_usb_suspend,
         .resume = if_usb_resume,
+        .reset_resume = if_usb_resume,
 };
 
 static int __init if_usb_init_module(void)
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index c2397f503b0f..f38cc5317b88 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -442,12 +442,16 @@ int br_del_if(struct net_bridge *br, struct net_device *dev)
 
 void __exit br_cleanup_bridges(void)
 {
-        struct net_device *dev, *nxt;
+        struct net_device *dev;
 
         rtnl_lock();
-        for_each_netdev_safe(&init_net, dev, nxt)
-                if (dev->priv_flags & IFF_EBRIDGE)
+restart:
+        for_each_netdev(&init_net, dev) {
+                if (dev->priv_flags & IFF_EBRIDGE) {
                         del_br(dev->priv);
+                        goto restart;
+                }
+        }
         rtnl_unlock();
 
 }
diff --git a/net/can/af_can.c b/net/can/af_can.c
index 7e8ca2836452..484bbf6dd032 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -205,12 +205,19 @@ static int can_create(struct net *net, struct socket *sock, int protocol)
  *  -ENOBUFS on full driver queue (see net_xmit_errno())
  *  -ENOMEM when local loopback failed at calling skb_clone()
  *  -EPERM when trying to send on a non-CAN interface
+ *  -EINVAL when the skb->data does not contain a valid CAN frame
  */
 int can_send(struct sk_buff *skb, int loop)
 {
         struct sk_buff *newskb = NULL;
+        struct can_frame *cf = (struct can_frame *)skb->data;
         int err;
 
+        if (skb->len != sizeof(struct can_frame) || cf->can_dlc > 8) {
+                kfree_skb(skb);
+                return -EINVAL;
+        }
+
         if (skb->dev->type != ARPHRD_CAN) {
                 kfree_skb(skb);
                 return -EPERM;
@@ -605,6 +612,7 @@ static int can_rcv(struct sk_buff *skb, struct net_device *dev,
                    struct packet_type *pt, struct net_device *orig_dev)
 {
         struct dev_rcv_lists *d;
+        struct can_frame *cf = (struct can_frame *)skb->data;
         int matches;
 
         if (dev->type != ARPHRD_CAN || dev_net(dev) != &init_net) {
@@ -612,6 +620,8 @@ static int can_rcv(struct sk_buff *skb, struct net_device *dev,
                 return 0;
         }
 
+        BUG_ON(skb->len != sizeof(struct can_frame) || cf->can_dlc > 8);
+
         /* update statistics */
         can_stats.rx_frames++;
         can_stats.rx_frames_delta++;
diff --git a/net/can/bcm.c b/net/can/bcm.c
index d9a3a9d13bed..72c2ce904f83 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -298,7 +298,7 @@ static void bcm_send_to_user(struct bcm_op *op, struct bcm_msg_head *head,
 
         if (head->nframes) {
                 /* can_frames starting here */
-                firstframe = (struct can_frame *) skb_tail_pointer(skb);
+                firstframe = (struct can_frame *)skb_tail_pointer(skb);
 
                 memcpy(skb_put(skb, datalen), frames, datalen);
 
@@ -826,6 +826,10 @@ static int bcm_tx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
                 for (i = 0; i < msg_head->nframes; i++) {
                         err = memcpy_fromiovec((u8 *)&op->frames[i],
                                                msg->msg_iov, CFSIZ);
+
+                        if (op->frames[i].can_dlc > 8)
+                                err = -EINVAL;
+
                         if (err < 0)
                                 return err;
 
@@ -858,6 +862,10 @@ static int bcm_tx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
                 for (i = 0; i < msg_head->nframes; i++) {
                         err = memcpy_fromiovec((u8 *)&op->frames[i],
                                                msg->msg_iov, CFSIZ);
+
+                        if (op->frames[i].can_dlc > 8)
+                                err = -EINVAL;
+
                         if (err < 0) {
                                 if (op->frames != &op->sframe)
                                         kfree(op->frames);
@@ -1164,9 +1172,12 @@ static int bcm_tx_send(struct msghdr *msg, int ifindex, struct sock *sk)
 
         skb->dev = dev;
         skb->sk  = sk;
-        can_send(skb, 1); /* send with loopback */
+        err = can_send(skb, 1); /* send with loopback */
         dev_put(dev);
 
+        if (err)
+                return err;
+
         return CFSIZ + MHSIZ;
 }
 
@@ -1185,6 +1196,10 @@ static int bcm_sendmsg(struct kiocb *iocb, struct socket *sock,
         if (!bo->bound)
                 return -ENOTCONN;
 
+        /* check for valid message length from userspace */
+        if (size < MHSIZ || (size - MHSIZ) % CFSIZ)
+                return -EINVAL;
+
         /* check for alternative ifindex for this bcm_op */
 
         if (!ifindex && msg->msg_name) {
@@ -1259,8 +1274,8 @@ static int bcm_sendmsg(struct kiocb *iocb, struct socket *sock,
                 break;
 
         case TX_SEND:
-                /* we need at least one can_frame */
-                if (msg_head.nframes < 1)
+                /* we need exactly one can_frame behind the msg head */
+                if ((msg_head.nframes != 1) || (size != CFSIZ + MHSIZ))
                         ret = -EINVAL;
                 else
                         ret = bcm_tx_send(msg, ifindex, sk);
diff --git a/net/can/raw.c b/net/can/raw.c
index 69877b8e7e9c..3e46ee36a1aa 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -632,6 +632,9 @@ static int raw_sendmsg(struct kiocb *iocb, struct socket *sock,
         } else
                 ifindex = ro->ifindex;
 
+        if (size != sizeof(struct can_frame))
+                return -EINVAL;
+
         dev = dev_get_by_index(&init_net, ifindex);
         if (!dev)
                 return -ENXIO;
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 850825dc86e6..1d723de18686 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -255,6 +255,7 @@
 #include <linux/init.h>
 #include <linux/fs.h>
 #include <linux/skbuff.h>
+#include <linux/scatterlist.h>
 #include <linux/splice.h>
 #include <linux/net.h>
 #include <linux/socket.h>
@@ -1208,7 +1209,8 @@ int tcp_read_sock(struct sock *sk, read_descriptor_t *desc,
                 return -ENOTCONN;
         while ((skb = tcp_recv_skb(sk, seq, &offset)) != NULL) {
                 if (offset < skb->len) {
-                        size_t used, len;
+                        int used;
+                        size_t len;
 
                         len = skb->len - offset;
                         /* Stop reading if we hit a patch of urgent data */