1 files changed, 36 insertions, 73 deletions

diff --git a/drivers/misc/sgi-xp/xpnet.c b/drivers/misc/sgi-xp/xpnet.c
index 38552f37e53d..e41cb93b8c89 100644
--- a/drivers/misc/sgi-xp/xpnet.c
+++ b/drivers/misc/sgi-xp/xpnet.c
@@ -6,7 +6,6 @@
  * Copyright (C) 1999-2008 Silicon Graphics, Inc. All rights reserved.
  */
 
-
 /*
  * Cross Partition Network Interface (XPNET) support
  *
@@ -21,7 +20,6 @@
  *
  */
 
-
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
@@ -40,7 +38,6 @@
 #include <asm/atomic.h>
 #include "xp.h"
 
-
 /*
  * The message payload transferred by XPC.
  *
@@ -79,7 +76,6 @@ struct xpnet_message {
 #define XPNET_MSG_ALIGNED_SIZE  (L1_CACHE_ALIGN(XPNET_MSG_SIZE))
 #define XPNET_MSG_NENTRIES      (PAGE_SIZE / XPNET_MSG_ALIGNED_SIZE)
 
-
 #define XPNET_MAX_KTHREADS      (XPNET_MSG_NENTRIES + 1)
 #define XPNET_MAX_IDLE_KTHREADS (XPNET_MSG_NENTRIES + 1)
 
@@ -91,9 +87,9 @@ struct xpnet_message {
 #define XPNET_VERSION_MAJOR(_v)         ((_v) >> 4)
 #define XPNET_VERSION_MINOR(_v)         ((_v) & 0xf)
 
-#define XPNET_VERSION _XPNET_VERSION(1,0)               /* version 1.0 */
-#define XPNET_VERSION_EMBED _XPNET_VERSION(1,1)         /* version 1.1 */
-#define XPNET_MAGIC     0x88786984 /* "XNET" */
+#define XPNET_VERSION _XPNET_VERSION(1,0)       /* version 1.0 */
+#define XPNET_VERSION_EMBED _XPNET_VERSION(1,1) /* version 1.1 */
+#define XPNET_MAGIC     0x88786984      /* "XNET" */
 
 #define XPNET_VALID_MSG(_m)                                                  \
    ((XPNET_VERSION_MAJOR(_m->version) == XPNET_VERSION_MAJOR(XPNET_VERSION)) \
@@ -101,7 +97,6 @@ struct xpnet_message {
 
 #define XPNET_DEVICE_NAME               "xp0"
 
-
 /*
  * When messages are queued with xpc_send_notify, a kmalloc'd buffer
  * of the following type is passed as a notification cookie.  When the
@@ -145,7 +140,6 @@ static DEFINE_SPINLOCK(xpnet_broadcast_lock);
 /* 32KB has been determined to be the ideal */
 #define XPNET_DEF_MTU (0x8000UL)
 
-
 /*
  * The partition id is encapsulated in the MAC address.  The following
  * define locates the octet the partid is in.
@@ -153,7 +147,6 @@ static DEFINE_SPINLOCK(xpnet_broadcast_lock);
 #define XPNET_PARTID_OCTET      1
 #define XPNET_LICENSE_OCTET     2
 
-
 /*
  * Define the XPNET debug device structure that is to be used with dev_dbg(),
  * dev_err(), dev_warn(), and dev_info().
@@ -163,7 +156,7 @@ struct device_driver xpnet_dbg_name = {
 };
 
 struct device xpnet_dbg_subname = {
-        .bus_id = {0},                  /* set to "" */
+        .bus_id = {0},          /* set to "" */
         .driver = &xpnet_dbg_name
 };
 
@@ -178,14 +171,13 @@ xpnet_receive(partid_t partid, int channel, struct xpnet_message *msg)
         struct sk_buff *skb;
         bte_result_t bret;
         struct xpnet_dev_private *priv =
-                (struct xpnet_dev_private *) xpnet_device->priv;
-
+            (struct xpnet_dev_private *)xpnet_device->priv;
 
         if (!XPNET_VALID_MSG(msg)) {
                 /*
                  * Packet with a different XPC version.  Ignore.
                  */
-                xpc_received(partid, channel, (void *) msg);
+                xpc_received(partid, channel, (void *)msg);
 
                 priv->stats.rx_errors++;
 
@@ -194,14 +186,13 @@ xpnet_receive(partid_t partid, int channel, struct xpnet_message *msg)
         dev_dbg(xpnet, "received 0x%lx, %d, %d, %d\n", msg->buf_pa, msg->size,
                 msg->leadin_ignore, msg->tailout_ignore);
 
-
         /* reserve an extra cache line */
         skb = dev_alloc_skb(msg->size + L1_CACHE_BYTES);
         if (!skb) {
                 dev_err(xpnet, "failed on dev_alloc_skb(%d)\n",
                         msg->size + L1_CACHE_BYTES);
 
-                xpc_received(partid, channel, (void *) msg);
+                xpc_received(partid, channel, (void *)msg);
 
                 priv->stats.rx_errors++;
 
@@ -227,12 +218,13 @@ xpnet_receive(partid_t partid, int channel, struct xpnet_message *msg)
          * Move the data over from the other side.
          */
         if ((XPNET_VERSION_MINOR(msg->version) == 1) &&
-                                                (msg->embedded_bytes != 0)) {
+            (msg->embedded_bytes != 0)) {
                 dev_dbg(xpnet, "copying embedded message. memcpy(0x%p, 0x%p, "
                         "%lu)\n", skb->data, &msg->data,
-                        (size_t) msg->embedded_bytes);
+                        (size_t)msg->embedded_bytes);
 
-                skb_copy_to_linear_data(skb, &msg->data, (size_t)msg->embedded_bytes);
+                skb_copy_to_linear_data(skb, &msg->data,
+                                        (size_t)msg->embedded_bytes);
         } else {
                 dev_dbg(xpnet, "transferring buffer to the skb->data area;\n\t"
                         "bte_copy(0x%p, 0x%p, %hu)\n", (void *)msg->buf_pa,
@@ -250,10 +242,10 @@ xpnet_receive(partid_t partid, int channel, struct xpnet_message *msg)
                         dev_err(xpnet, "bte_copy(0x%p, 0x%p, 0x%hx) returned "
                                 "error=0x%x\n", (void *)msg->buf_pa,
                                 (void *)__pa((u64)skb->data &
-                                                        ~(L1_CACHE_BYTES - 1)),
+                                             ~(L1_CACHE_BYTES - 1)),
                                 msg->size, bret);
 
-                        xpc_received(partid, channel, (void *) msg);
+                        xpc_received(partid, channel, (void *)msg);
 
                         priv->stats.rx_errors++;
 
@@ -262,7 +254,7 @@ xpnet_receive(partid_t partid, int channel, struct xpnet_message *msg)
         }
 
         dev_dbg(xpnet, "<skb->head=0x%p skb->data=0x%p skb->tail=0x%p "
-                "skb->end=0x%p skb->len=%d\n", (void *) skb->head,
+                "skb->end=0x%p skb->len=%d\n", (void *)skb->head,
                 (void *)skb->data, skb_tail_pointer(skb), skb_end_pointer(skb),
                 skb->len);
 
@@ -275,16 +267,14 @@ xpnet_receive(partid_t partid, int channel, struct xpnet_message *msg)
                 (void *)skb->head, (void *)skb->data, skb_tail_pointer(skb),
                 skb_end_pointer(skb), skb->len);
 
-
         xpnet_device->last_rx = jiffies;
         priv->stats.rx_packets++;
         priv->stats.rx_bytes += skb->len + ETH_HLEN;
 
         netif_rx_ni(skb);
-        xpc_received(partid, channel, (void *) msg);
+        xpc_received(partid, channel, (void *)msg);
 }
 
-
 /*
  * This is the handler which XPC calls during any sort of change in
  * state or message reception on a connection.
@@ -295,20 +285,19 @@ xpnet_connection_activity(enum xpc_retval reason, partid_t partid, int channel,
 {
         long bp;
 
-
         DBUG_ON(partid <= 0 || partid >= XP_MAX_PARTITIONS);
         DBUG_ON(channel != XPC_NET_CHANNEL);
 
-        switch(reason) {
+        switch (reason) {
         case xpcMsgReceived:    /* message received */
                 DBUG_ON(data == NULL);
 
-                xpnet_receive(partid, channel, (struct xpnet_message *) data);
+                xpnet_receive(partid, channel, (struct xpnet_message *)data);
                 break;
 
         case xpcConnected:      /* connection completed to a partition */
                 spin_lock_bh(&xpnet_broadcast_lock);
-                xpnet_broadcast_partitions |= 1UL << (partid -1 );
+                xpnet_broadcast_partitions |= 1UL << (partid - 1);
                 bp = xpnet_broadcast_partitions;
                 spin_unlock_bh(&xpnet_broadcast_lock);
 
@@ -321,7 +310,7 @@ xpnet_connection_activity(enum xpc_retval reason, partid_t partid, int channel,
 
         default:
                 spin_lock_bh(&xpnet_broadcast_lock);
-                xpnet_broadcast_partitions &= ~(1UL << (partid -1 ));
+                xpnet_broadcast_partitions &= ~(1UL << (partid - 1));
                 bp = xpnet_broadcast_partitions;
                 spin_unlock_bh(&xpnet_broadcast_lock);
 
@@ -337,13 +326,11 @@ xpnet_connection_activity(enum xpc_retval reason, partid_t partid, int channel,
         }
 }
 
-
 static int
 xpnet_dev_open(struct net_device *dev)
 {
         enum xpc_retval ret;
 
-
         dev_dbg(xpnet, "calling xpc_connect(%d, 0x%p, NULL, %ld, %ld, %ld, "
                 "%ld)\n", XPC_NET_CHANNEL, xpnet_connection_activity,
                 XPNET_MSG_SIZE, XPNET_MSG_NENTRIES, XPNET_MAX_KTHREADS,
@@ -364,7 +351,6 @@ xpnet_dev_open(struct net_device *dev)
         return 0;
 }
 
-
 static int
 xpnet_dev_stop(struct net_device *dev)
 {
@@ -375,7 +361,6 @@ xpnet_dev_stop(struct net_device *dev)
         return 0;
 }
 
-
 static int
 xpnet_dev_change_mtu(struct net_device *dev, int new_mtu)
 {
@@ -392,7 +377,6 @@ xpnet_dev_change_mtu(struct net_device *dev, int new_mtu)
         return 0;
 }
 
-
 /*
  * Required for the net_device structure.
  */
@@ -402,7 +386,6 @@ xpnet_dev_set_config(struct net_device *dev, struct ifmap *new_map)
         return 0;
 }
 
-
 /*
  * Return statistics to the caller.
  */
@@ -411,13 +394,11 @@ xpnet_dev_get_stats(struct net_device *dev)
 {
         struct xpnet_dev_private *priv;
 
-
-        priv = (struct xpnet_dev_private *) dev->priv;
+        priv = (struct xpnet_dev_private *)dev->priv;
 
         return &priv->stats;
 }
 
-
 /*
  * Notification that the other end has received the message and
  * DMA'd the skb information.  At this point, they are done with
@@ -426,11 +407,9 @@ xpnet_dev_get_stats(struct net_device *dev)
  */
 static void
 xpnet_send_completed(enum xpc_retval reason, partid_t partid, int channel,
-                        void *__qm)
+                     void *__qm)
 {
-        struct xpnet_pending_msg *queued_msg =
-                (struct xpnet_pending_msg *) __qm;
-
+        struct xpnet_pending_msg *queued_msg = (struct xpnet_pending_msg *)__qm;
 
         DBUG_ON(queued_msg == NULL);
 
@@ -439,14 +418,13 @@ xpnet_send_completed(enum xpc_retval reason, partid_t partid, int channel,
 
         if (atomic_dec_return(&queued_msg->use_count) == 0) {
                 dev_dbg(xpnet, "all acks for skb->head=-x%p\n",
-                        (void *) queued_msg->skb->head);
+                        (void *)queued_msg->skb->head);
 
                 dev_kfree_skb_any(queued_msg->skb);
                 kfree(queued_msg);
         }
 }
 
-
 /*
  * Network layer has formatted a packet (skb) and is ready to place it
  * "on the wire".  Prepare and send an xpnet_message to all partitions
@@ -469,16 +447,13 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
         struct xpnet_dev_private *priv;
         u16 embedded_bytes;
 
-
-        priv = (struct xpnet_dev_private *) dev->priv;
-
+        priv = (struct xpnet_dev_private *)dev->priv;
 
         dev_dbg(xpnet, ">skb->head=0x%p skb->data=0x%p skb->tail=0x%p "
-                "skb->end=0x%p skb->len=%d\n", (void *) skb->head,
+                "skb->end=0x%p skb->len=%d\n", (void *)skb->head,
                 (void *)skb->data, skb_tail_pointer(skb), skb_end_pointer(skb),
                 skb->len);
 
-
         /*
          * The xpnet_pending_msg tracks how many outstanding
          * xpc_send_notifies are relying on this skb.  When none
@@ -487,16 +462,15 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
         queued_msg = kmalloc(sizeof(struct xpnet_pending_msg), GFP_ATOMIC);
         if (queued_msg == NULL) {
                 dev_warn(xpnet, "failed to kmalloc %ld bytes; dropping "
-                        "packet\n", sizeof(struct xpnet_pending_msg));
+                         "packet\n", sizeof(struct xpnet_pending_msg));
 
                 priv->stats.tx_errors++;
 
                 return -ENOMEM;
         }
 
-
         /* get the beginning of the first cacheline and end of last */
-        start_addr = ((u64) skb->data & ~(L1_CACHE_BYTES - 1));
+        start_addr = ((u64)skb->data & ~(L1_CACHE_BYTES - 1));
         end_addr = L1_CACHE_ALIGN((u64)skb_tail_pointer(skb));
 
         /* calculate how many bytes to embed in the XPC message */
@@ -506,7 +480,6 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
                 embedded_bytes = skb->len;
         }
 
-
         /*
          * Since the send occurs asynchronously, we set the count to one
          * and begin sending.  Any sends that happen to complete before
@@ -517,14 +490,13 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
         atomic_set(&queued_msg->use_count, 1);
         queued_msg->skb = skb;
 
-
         second_mac_octet = skb->data[XPNET_PARTID_OCTET];
         if (second_mac_octet == 0xff) {
                 /* we are being asked to broadcast to all partitions */
                 dp = xpnet_broadcast_partitions;
         } else if (second_mac_octet != 0) {
                 dp = xpnet_broadcast_partitions &
-                                        (1UL << (second_mac_octet - 1));
+                    (1UL << (second_mac_octet - 1));
         } else {
                 /* 0 is an invalid partid.  Ignore */
                 dp = 0;
@@ -543,7 +515,6 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
         for (dest_partid = 1; dp && dest_partid < XP_MAX_PARTITIONS;
              dest_partid++) {
 
-
                 if (!(dp & (1UL << (dest_partid - 1)))) {
                         /* not destined for this partition */
                         continue;
@@ -552,7 +523,6 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
                 /* remove this partition from the destinations mask */
                 dp &= ~(1UL << (dest_partid - 1));
 
-
                 /* found a partition to send to */
 
                 ret = xpc_allocate(dest_partid, XPC_NET_CHANNEL,
@@ -565,7 +535,7 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
                 if (unlikely(embedded_bytes != 0)) {
                         msg->version = XPNET_VERSION_EMBED;
                         dev_dbg(xpnet, "calling memcpy(0x%p, 0x%p, 0x%lx)\n",
-                                &msg->data, skb->data, (size_t) embedded_bytes);
+                                &msg->data, skb->data, (size_t)embedded_bytes);
                         skb_copy_from_linear_data(skb, &msg->data,
                                                   (size_t)embedded_bytes);
                 } else {
@@ -573,7 +543,7 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
                 }
                 msg->magic = XPNET_MAGIC;
                 msg->size = end_addr - start_addr;
-                msg->leadin_ignore = (u64) skb->data - start_addr;
+                msg->leadin_ignore = (u64)skb->data - start_addr;
                 msg->tailout_ignore = end_addr - (u64)skb_tail_pointer(skb);
                 msg->buf_pa = __pa(start_addr);
 
@@ -583,7 +553,6 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
                         dest_partid, XPC_NET_CHANNEL, msg->buf_pa, msg->size,
                         msg->leadin_ignore, msg->tailout_ignore);
 
-
                 atomic_inc(&queued_msg->use_count);
 
                 ret = xpc_send_notify(dest_partid, XPC_NET_CHANNEL, msg,
@@ -599,7 +568,6 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
                 dev_dbg(xpnet, "no partitions to receive packet destined for "
                         "%d\n", dest_partid);
 
-
                 dev_kfree_skb(skb);
                 kfree(queued_msg);
         }
@@ -610,23 +578,20 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
         return 0;
 }
 
-
 /*
  * Deal with transmit timeouts coming from the network layer.
  */
 static void
-xpnet_dev_tx_timeout (struct net_device *dev)
+xpnet_dev_tx_timeout(struct net_device *dev)
 {
         struct xpnet_dev_private *priv;
 
-
-        priv = (struct xpnet_dev_private *) dev->priv;
+        priv = (struct xpnet_dev_private *)dev->priv;
 
         priv->stats.tx_errors++;
         return;
 }
 
-
 static int __init
 xpnet_init(void)
 {
@@ -634,7 +599,6 @@ xpnet_init(void)
         u32 license_num;
         int result = -ENOMEM;
 
-
         if (!ia64_platform_is("sn2")) {
                 return -ENODEV;
         }
@@ -672,7 +636,7 @@ xpnet_init(void)
         license_num = sn_partition_serial_number_val();
         for (i = 3; i >= 0; i--) {
                 xpnet_device->dev_addr[XPNET_LICENSE_OCTET + i] =
-                                                        license_num & 0xff;
+                    license_num & 0xff;
                 license_num = license_num >> 8;
         }
 
@@ -696,23 +660,22 @@ xpnet_init(void)
 
         return result;
 }
-module_init(xpnet_init);
 
+module_init(xpnet_init);
 
 static void __exit
 xpnet_exit(void)
 {
         dev_info(xpnet, "unregistering network device %s\n",
-                xpnet_device[0].name);
+                 xpnet_device[0].name);
 
         unregister_netdev(xpnet_device);
 
         free_netdev(xpnet_device);
 }
-module_exit(xpnet_exit);
 
+module_exit(xpnet_exit);
 
 MODULE_AUTHOR("Silicon Graphics, Inc.");
 MODULE_DESCRIPTION("Cross Partition Network adapter (XPNET)");
 MODULE_LICENSE("GPL");
-