/**************************************************************************/
/*
TODO:
- - remove frag processing code - no longer needed
- add support for sysfs
- possibly remove procfs support
*/
#include <linux/module.h>
+#include <linux/moduleparam.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/proc_fs.h>
#include <linux/in.h>
#include <linux/ip.h>
+#include <linux/slab.h>
#include <net/net_namespace.h>
-#include <asm/semaphore.h>
#include <asm/hvcall.h>
#include <asm/atomic.h>
#include <asm/vio.h>
+#include <asm/iommu.h>
#include <asm/uaccess.h>
+#include <asm/firmware.h>
#include <linux/seq_file.h>
#include "ibmveth.h"
static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
static int ibmveth_poll(struct napi_struct *napi, int budget);
static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *dev);
-static struct net_device_stats *ibmveth_get_stats(struct net_device *dev);
static void ibmveth_set_multicast_list(struct net_device *dev);
static int ibmveth_change_mtu(struct net_device *dev, int new_mtu);
static void ibmveth_proc_register_driver(void);
static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter);
static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance);
static void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter);
+static unsigned long ibmveth_get_desired_dma(struct vio_dev *vdev);
static struct kobj_type ktype_veth_pool;
+
#ifdef CONFIG_PROC_FS
#define IBMVETH_PROC_DIR "ibmveth"
static struct proc_dir_entry *ibmveth_proc_dir;
MODULE_LICENSE("GPL");
MODULE_VERSION(ibmveth_driver_version);
+struct ibmveth_stat {
+ char name[ETH_GSTRING_LEN];
+ int offset;
+};
+
+#define IBMVETH_STAT_OFF(stat) offsetof(struct ibmveth_adapter, stat)
+#define IBMVETH_GET_STAT(a, off) *((u64 *)(((unsigned long)(a)) + off))
+
+struct ibmveth_stat ibmveth_stats[] = {
+ { "replenish_task_cycles", IBMVETH_STAT_OFF(replenish_task_cycles) },
+ { "replenish_no_mem", IBMVETH_STAT_OFF(replenish_no_mem) },
+ { "replenish_add_buff_failure", IBMVETH_STAT_OFF(replenish_add_buff_failure) },
+ { "replenish_add_buff_success", IBMVETH_STAT_OFF(replenish_add_buff_success) },
+ { "rx_invalid_buffer", IBMVETH_STAT_OFF(rx_invalid_buffer) },
+ { "rx_no_buffer", IBMVETH_STAT_OFF(rx_no_buffer) },
+ { "tx_map_failed", IBMVETH_STAT_OFF(tx_map_failed) },
+ { "tx_send_failed", IBMVETH_STAT_OFF(tx_send_failed) },
+};
+
/* simple methods of getting data from the current rxq entry */
+static inline u32 ibmveth_rxq_flags(struct ibmveth_adapter *adapter)
+{
+ return adapter->rx_queue.queue_addr[adapter->rx_queue.index].flags_off;
+}
+
+static inline int ibmveth_rxq_toggle(struct ibmveth_adapter *adapter)
+{
+ return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_TOGGLE) >> IBMVETH_RXQ_TOGGLE_SHIFT;
+}
+
static inline int ibmveth_rxq_pending_buffer(struct ibmveth_adapter *adapter)
{
- return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].toggle == adapter->rx_queue.toggle);
+ return (ibmveth_rxq_toggle(adapter) == adapter->rx_queue.toggle);
}
static inline int ibmveth_rxq_buffer_valid(struct ibmveth_adapter *adapter)
{
- return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].valid);
+ return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_VALID);
}
static inline int ibmveth_rxq_frame_offset(struct ibmveth_adapter *adapter)
{
- return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].offset);
+ return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_OFF_MASK);
}
static inline int ibmveth_rxq_frame_length(struct ibmveth_adapter *adapter)
static inline int ibmveth_rxq_csum_good(struct ibmveth_adapter *adapter)
{
- return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].csum_good);
+ return (ibmveth_rxq_flags(adapter) & IBMVETH_RXQ_CSUM_GOOD);
}
/* setup the initial settings for a buffer pool */
u32 i;
u32 count = pool->size - atomic_read(&pool->available);
u32 buffers_added = 0;
+ struct sk_buff *skb;
+ unsigned int free_index, index;
+ u64 correlator;
+ unsigned long lpar_rc;
+ dma_addr_t dma_addr;
mb();
for(i = 0; i < count; ++i) {
- struct sk_buff *skb;
- unsigned int free_index, index;
- u64 correlator;
union ibmveth_buf_desc desc;
- unsigned long lpar_rc;
- dma_addr_t dma_addr;
skb = alloc_skb(pool->buff_size, GFP_ATOMIC);
dma_addr = dma_map_single(&adapter->vdev->dev, skb->data,
pool->buff_size, DMA_FROM_DEVICE);
+ if (dma_mapping_error(&adapter->vdev->dev, dma_addr))
+ goto failure;
+
pool->free_map[free_index] = IBM_VETH_INVALID_MAP;
pool->dma_addr[index] = dma_addr;
pool->skbuff[index] = skb;
correlator = ((u64)pool->index << 32) | index;
*(u64*)skb->data = correlator;
- desc.desc = 0;
- desc.fields.valid = 1;
- desc.fields.length = pool->buff_size;
+ desc.fields.flags_len = IBMVETH_BUF_VALID | pool->buff_size;
desc.fields.address = dma_addr;
lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc);
- if(lpar_rc != H_SUCCESS) {
- pool->free_map[free_index] = index;
- pool->skbuff[index] = NULL;
- if (pool->consumer_index == 0)
- pool->consumer_index = pool->size - 1;
- else
- pool->consumer_index--;
- dma_unmap_single(&adapter->vdev->dev,
- pool->dma_addr[index], pool->buff_size,
- DMA_FROM_DEVICE);
- dev_kfree_skb_any(skb);
- adapter->replenish_add_buff_failure++;
- break;
- } else {
+ if (lpar_rc != H_SUCCESS)
+ goto failure;
+ else {
buffers_added++;
adapter->replenish_add_buff_success++;
}
mb();
atomic_add(buffers_added, &(pool->available));
+ return;
+
+failure:
+ pool->free_map[free_index] = index;
+ pool->skbuff[index] = NULL;
+ if (pool->consumer_index == 0)
+ pool->consumer_index = pool->size - 1;
+ else
+ pool->consumer_index--;
+ if (!dma_mapping_error(&adapter->vdev->dev, dma_addr))
+ dma_unmap_single(&adapter->vdev->dev,
+ pool->dma_addr[index], pool->buff_size,
+ DMA_FROM_DEVICE);
+ dev_kfree_skb_any(skb);
+ adapter->replenish_add_buff_failure++;
+
+ mb();
+ atomic_add(buffers_added, &(pool->available));
}
/* replenish routine */
adapter->replenish_task_cycles++;
- for(i = 0; i < IbmVethNumBufferPools; i++)
+ for (i = (IbmVethNumBufferPools - 1); i >= 0; i--)
if(adapter->rx_buff_pool[i].active)
ibmveth_replenish_buffer_pool(adapter,
&adapter->rx_buff_pool[i]);
return;
}
- desc.desc = 0;
- desc.fields.valid = 1;
- desc.fields.length = adapter->rx_buff_pool[pool].buff_size;
+ desc.fields.flags_len = IBMVETH_BUF_VALID |
+ adapter->rx_buff_pool[pool].buff_size;
desc.fields.address = adapter->rx_buff_pool[pool].dma_addr[index];
lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc);
static void ibmveth_cleanup(struct ibmveth_adapter *adapter)
{
int i;
+ struct device *dev = &adapter->vdev->dev;
if(adapter->buffer_list_addr != NULL) {
- if(!dma_mapping_error(adapter->buffer_list_dma)) {
- dma_unmap_single(&adapter->vdev->dev,
- adapter->buffer_list_dma, 4096,
+ if (!dma_mapping_error(dev, adapter->buffer_list_dma)) {
+ dma_unmap_single(dev, adapter->buffer_list_dma, 4096,
DMA_BIDIRECTIONAL);
adapter->buffer_list_dma = DMA_ERROR_CODE;
}
}
if(adapter->filter_list_addr != NULL) {
- if(!dma_mapping_error(adapter->filter_list_dma)) {
- dma_unmap_single(&adapter->vdev->dev,
- adapter->filter_list_dma, 4096,
+ if (!dma_mapping_error(dev, adapter->filter_list_dma)) {
+ dma_unmap_single(dev, adapter->filter_list_dma, 4096,
DMA_BIDIRECTIONAL);
adapter->filter_list_dma = DMA_ERROR_CODE;
}
}
if(adapter->rx_queue.queue_addr != NULL) {
- if(!dma_mapping_error(adapter->rx_queue.queue_dma)) {
- dma_unmap_single(&adapter->vdev->dev,
+ if (!dma_mapping_error(dev, adapter->rx_queue.queue_dma)) {
+ dma_unmap_single(dev,
adapter->rx_queue.queue_dma,
adapter->rx_queue.queue_len,
DMA_BIDIRECTIONAL);
if (adapter->rx_buff_pool[i].active)
ibmveth_free_buffer_pool(adapter,
&adapter->rx_buff_pool[i]);
+
+ if (adapter->bounce_buffer != NULL) {
+ if (!dma_mapping_error(dev, adapter->bounce_buffer_dma)) {
+ dma_unmap_single(&adapter->vdev->dev,
+ adapter->bounce_buffer_dma,
+ adapter->netdev->mtu + IBMVETH_BUFF_OH,
+ DMA_BIDIRECTIONAL);
+ adapter->bounce_buffer_dma = DMA_ERROR_CODE;
+ }
+ kfree(adapter->bounce_buffer);
+ adapter->bounce_buffer = NULL;
+ }
}
static int ibmveth_register_logical_lan(struct ibmveth_adapter *adapter,
static int ibmveth_open(struct net_device *netdev)
{
- struct ibmveth_adapter *adapter = netdev->priv;
+ struct ibmveth_adapter *adapter = netdev_priv(netdev);
u64 mac_address = 0;
int rxq_entries = 1;
unsigned long lpar_rc;
int rc;
union ibmveth_buf_desc rxq_desc;
int i;
+ struct device *dev;
ibmveth_debug_printk("open starting\n");
return -ENOMEM;
}
- adapter->buffer_list_dma = dma_map_single(&adapter->vdev->dev,
+ dev = &adapter->vdev->dev;
+
+ adapter->buffer_list_dma = dma_map_single(dev,
adapter->buffer_list_addr, 4096, DMA_BIDIRECTIONAL);
- adapter->filter_list_dma = dma_map_single(&adapter->vdev->dev,
+ adapter->filter_list_dma = dma_map_single(dev,
adapter->filter_list_addr, 4096, DMA_BIDIRECTIONAL);
- adapter->rx_queue.queue_dma = dma_map_single(&adapter->vdev->dev,
+ adapter->rx_queue.queue_dma = dma_map_single(dev,
adapter->rx_queue.queue_addr,
adapter->rx_queue.queue_len, DMA_BIDIRECTIONAL);
- if((dma_mapping_error(adapter->buffer_list_dma) ) ||
- (dma_mapping_error(adapter->filter_list_dma)) ||
- (dma_mapping_error(adapter->rx_queue.queue_dma))) {
+ if ((dma_mapping_error(dev, adapter->buffer_list_dma)) ||
+ (dma_mapping_error(dev, adapter->filter_list_dma)) ||
+ (dma_mapping_error(dev, adapter->rx_queue.queue_dma))) {
ibmveth_error_printk("unable to map filter or buffer list pages\n");
ibmveth_cleanup(adapter);
napi_disable(&adapter->napi);
memcpy(&mac_address, netdev->dev_addr, netdev->addr_len);
mac_address = mac_address >> 16;
- rxq_desc.desc = 0;
- rxq_desc.fields.valid = 1;
- rxq_desc.fields.length = adapter->rx_queue.queue_len;
+ rxq_desc.fields.flags_len = IBMVETH_BUF_VALID | adapter->rx_queue.queue_len;
rxq_desc.fields.address = adapter->rx_queue.queue_dma;
ibmveth_debug_printk("buffer list @ 0x%p\n", adapter->buffer_list_addr);
if(lpar_rc != H_SUCCESS) {
ibmveth_error_printk("h_register_logical_lan failed with %ld\n", lpar_rc);
- ibmveth_error_printk("buffer TCE:0x%lx filter TCE:0x%lx rxq desc:0x%lx MAC:0x%lx\n",
+ ibmveth_error_printk("buffer TCE:0x%llx filter TCE:0x%llx rxq desc:0x%llx MAC:0x%llx\n",
adapter->buffer_list_dma,
adapter->filter_list_dma,
rxq_desc.desc,
}
ibmveth_debug_printk("registering irq 0x%x\n", netdev->irq);
- if((rc = request_irq(netdev->irq, &ibmveth_interrupt, 0, netdev->name, netdev)) != 0) {
+ if((rc = request_irq(netdev->irq, ibmveth_interrupt, 0, netdev->name, netdev)) != 0) {
ibmveth_error_printk("unable to request irq 0x%x, rc %d\n", netdev->irq, rc);
do {
rc = h_free_logical_lan(adapter->vdev->unit_address);
return rc;
}
+ adapter->bounce_buffer =
+ kmalloc(netdev->mtu + IBMVETH_BUFF_OH, GFP_KERNEL);
+ if (!adapter->bounce_buffer) {
+ ibmveth_error_printk("unable to allocate bounce buffer\n");
+ ibmveth_cleanup(adapter);
+ napi_disable(&adapter->napi);
+ return -ENOMEM;
+ }
+ adapter->bounce_buffer_dma =
+ dma_map_single(&adapter->vdev->dev, adapter->bounce_buffer,
+ netdev->mtu + IBMVETH_BUFF_OH, DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(dev, adapter->bounce_buffer_dma)) {
+ ibmveth_error_printk("unable to map bounce buffer\n");
+ ibmveth_cleanup(adapter);
+ napi_disable(&adapter->napi);
+ return -ENOMEM;
+ }
+
ibmveth_debug_printk("initial replenish cycle\n");
ibmveth_interrupt(netdev->irq, netdev);
static int ibmveth_close(struct net_device *netdev)
{
- struct ibmveth_adapter *adapter = netdev->priv;
+ struct ibmveth_adapter *adapter = netdev_priv(netdev);
long lpar_rc;
ibmveth_debug_printk("close starting\n");
static void ibmveth_set_rx_csum_flags(struct net_device *dev, u32 data)
{
- struct ibmveth_adapter *adapter = dev->priv;
+ struct ibmveth_adapter *adapter = netdev_priv(dev);
if (data)
adapter->rx_csum = 1;
static void ibmveth_set_tx_csum_flags(struct net_device *dev, u32 data)
{
- struct ibmveth_adapter *adapter = dev->priv;
+ struct ibmveth_adapter *adapter = netdev_priv(dev);
if (data) {
dev->features |= NETIF_F_IP_CSUM;
static int ibmveth_set_csum_offload(struct net_device *dev, u32 data,
void (*done) (struct net_device *, u32))
{
- struct ibmveth_adapter *adapter = dev->priv;
- union ibmveth_illan_attributes set_attr, clr_attr, ret_attr;
+ struct ibmveth_adapter *adapter = netdev_priv(dev);
+ unsigned long set_attr, clr_attr, ret_attr;
long ret;
int rc1 = 0, rc2 = 0;
int restart = 0;
adapter->pool_config = 0;
}
- set_attr.desc = 0;
- clr_attr.desc = 0;
+ set_attr = 0;
+ clr_attr = 0;
if (data)
- set_attr.fields.tcp_csum_offload_ipv4 = 1;
+ set_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM;
else
- clr_attr.fields.tcp_csum_offload_ipv4 = 1;
+ clr_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM;
- ret = h_illan_attributes(adapter->vdev->unit_address, 0, 0, &ret_attr.desc);
+ ret = h_illan_attributes(adapter->vdev->unit_address, 0, 0, &ret_attr);
- if (ret == H_SUCCESS && !ret_attr.fields.active_trunk &&
- !ret_attr.fields.trunk_priority &&
- ret_attr.fields.csum_offload_padded_pkt_support) {
- ret = h_illan_attributes(adapter->vdev->unit_address, clr_attr.desc,
- set_attr.desc, &ret_attr.desc);
+ if (ret == H_SUCCESS && !(ret_attr & IBMVETH_ILLAN_ACTIVE_TRUNK) &&
+ !(ret_attr & IBMVETH_ILLAN_TRUNK_PRI_MASK) &&
+ (ret_attr & IBMVETH_ILLAN_PADDED_PKT_CSUM)) {
+ ret = h_illan_attributes(adapter->vdev->unit_address, clr_attr,
+ set_attr, &ret_attr);
if (ret != H_SUCCESS) {
rc1 = -EIO;
" %d rc=%ld\n", data, ret);
ret = h_illan_attributes(adapter->vdev->unit_address,
- set_attr.desc, clr_attr.desc, &ret_attr.desc);
+ set_attr, clr_attr, &ret_attr);
} else
done(dev, data);
} else {
rc1 = -EIO;
ibmveth_error_printk("unable to change checksum offload settings."
- " %d rc=%ld ret_attr=%lx\n", data, ret, ret_attr.desc);
+ " %d rc=%ld ret_attr=%lx\n", data, ret, ret_attr);
}
if (restart)
static int ibmveth_set_rx_csum(struct net_device *dev, u32 data)
{
- struct ibmveth_adapter *adapter = dev->priv;
+ struct ibmveth_adapter *adapter = netdev_priv(dev);
if ((data && adapter->rx_csum) || (!data && !adapter->rx_csum))
return 0;
static int ibmveth_set_tx_csum(struct net_device *dev, u32 data)
{
- struct ibmveth_adapter *adapter = dev->priv;
+ struct ibmveth_adapter *adapter = netdev_priv(dev);
int rc = 0;
if (data && (dev->features & NETIF_F_IP_CSUM))
static u32 ibmveth_get_rx_csum(struct net_device *dev)
{
- struct ibmveth_adapter *adapter = dev->priv;
+ struct ibmveth_adapter *adapter = netdev_priv(dev);
return adapter->rx_csum;
}
+static void ibmveth_get_strings(struct net_device *dev, u32 stringset, u8 *data)
+{
+ int i;
+
+ if (stringset != ETH_SS_STATS)
+ return;
+
+ for (i = 0; i < ARRAY_SIZE(ibmveth_stats); i++, data += ETH_GSTRING_LEN)
+ memcpy(data, ibmveth_stats[i].name, ETH_GSTRING_LEN);
+}
+
+static int ibmveth_get_sset_count(struct net_device *dev, int sset)
+{
+ switch (sset) {
+ case ETH_SS_STATS:
+ return ARRAY_SIZE(ibmveth_stats);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static void ibmveth_get_ethtool_stats(struct net_device *dev,
+ struct ethtool_stats *stats, u64 *data)
+{
+ int i;
+ struct ibmveth_adapter *adapter = netdev_priv(dev);
+
+ for (i = 0; i < ARRAY_SIZE(ibmveth_stats); i++)
+ data[i] = IBMVETH_GET_STAT(adapter, ibmveth_stats[i].offset);
+}
+
static const struct ethtool_ops netdev_ethtool_ops = {
.get_drvinfo = netdev_get_drvinfo,
.get_settings = netdev_get_settings,
.get_link = netdev_get_link,
- .get_sg = ethtool_op_get_sg,
- .get_tx_csum = ethtool_op_get_tx_csum,
.set_tx_csum = ibmveth_set_tx_csum,
.get_rx_csum = ibmveth_get_rx_csum,
.set_rx_csum = ibmveth_set_rx_csum,
- .get_tso = ethtool_op_get_tso,
- .get_ufo = ethtool_op_get_ufo,
+ .get_strings = ibmveth_get_strings,
+ .get_sset_count = ibmveth_get_sset_count,
+ .get_ethtool_stats = ibmveth_get_ethtool_stats,
};
static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
#define page_offset(v) ((unsigned long)(v) & ((1 << 12) - 1))
-static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *netdev)
+static netdev_tx_t ibmveth_start_xmit(struct sk_buff *skb,
+ struct net_device *netdev)
{
- struct ibmveth_adapter *adapter = netdev->priv;
- union ibmveth_buf_desc desc[IbmVethMaxSendFrags];
+ struct ibmveth_adapter *adapter = netdev_priv(netdev);
+ union ibmveth_buf_desc desc;
unsigned long lpar_rc;
- int nfrags = 0, curfrag;
unsigned long correlator;
unsigned long flags;
unsigned int retry_count;
unsigned int tx_packets = 0;
unsigned int tx_send_failed = 0;
unsigned int tx_map_failed = 0;
+ int used_bounce = 0;
+ unsigned long data_dma_addr;
-
- if ((skb_shinfo(skb)->nr_frags + 1) > IbmVethMaxSendFrags) {
- tx_dropped++;
- goto out;
- }
-
- memset(&desc, 0, sizeof(desc));
-
- /* nfrags = number of frags after the initial fragment */
- nfrags = skb_shinfo(skb)->nr_frags;
-
- if(nfrags)
- adapter->tx_multidesc_send++;
-
- /* map the initial fragment */
- desc[0].fields.length = nfrags ? skb->len - skb->data_len : skb->len;
- desc[0].fields.address = dma_map_single(&adapter->vdev->dev, skb->data,
- desc[0].fields.length, DMA_TO_DEVICE);
- desc[0].fields.valid = 1;
+ desc.fields.flags_len = IBMVETH_BUF_VALID | skb->len;
if (skb->ip_summed == CHECKSUM_PARTIAL &&
ip_hdr(skb)->protocol != IPPROTO_TCP && skb_checksum_help(skb)) {
if (skb->ip_summed == CHECKSUM_PARTIAL) {
unsigned char *buf = skb_transport_header(skb) + skb->csum_offset;
- desc[0].fields.no_csum = 1;
- desc[0].fields.csum_good = 1;
+ desc.fields.flags_len |= (IBMVETH_BUF_NO_CSUM | IBMVETH_BUF_CSUM_GOOD);
/* Need to zero out the checksum */
buf[0] = 0;
buf[1] = 0;
}
- if(dma_mapping_error(desc[0].fields.address)) {
- ibmveth_error_printk("tx: unable to map initial fragment\n");
+ data_dma_addr = dma_map_single(&adapter->vdev->dev, skb->data,
+ skb->len, DMA_TO_DEVICE);
+ if (dma_mapping_error(&adapter->vdev->dev, data_dma_addr)) {
+ if (!firmware_has_feature(FW_FEATURE_CMO))
+ ibmveth_error_printk("tx: unable to map xmit buffer\n");
+ skb_copy_from_linear_data(skb, adapter->bounce_buffer,
+ skb->len);
+ desc.fields.address = adapter->bounce_buffer_dma;
tx_map_failed++;
- tx_dropped++;
- goto out;
- }
-
- curfrag = nfrags;
-
- /* map fragments past the initial portion if there are any */
- while(curfrag--) {
- skb_frag_t *frag = &skb_shinfo(skb)->frags[curfrag];
- desc[curfrag+1].fields.address
- = dma_map_single(&adapter->vdev->dev,
- page_address(frag->page) + frag->page_offset,
- frag->size, DMA_TO_DEVICE);
- desc[curfrag+1].fields.length = frag->size;
- desc[curfrag+1].fields.valid = 1;
- if (skb->ip_summed == CHECKSUM_PARTIAL) {
- desc[curfrag+1].fields.no_csum = 1;
- desc[curfrag+1].fields.csum_good = 1;
- }
-
- if(dma_mapping_error(desc[curfrag+1].fields.address)) {
- ibmveth_error_printk("tx: unable to map fragment %d\n", curfrag);
- tx_map_failed++;
- tx_dropped++;
- /* Free all the mappings we just created */
- while(curfrag < nfrags) {
- dma_unmap_single(&adapter->vdev->dev,
- desc[curfrag+1].fields.address,
- desc[curfrag+1].fields.length,
- DMA_TO_DEVICE);
- curfrag++;
- }
- goto out;
- }
- }
+ used_bounce = 1;
+ wmb();
+ } else
+ desc.fields.address = data_dma_addr;
/* send the frame. Arbitrarily set retrycount to 1024 */
correlator = 0;
retry_count = 1024;
do {
lpar_rc = h_send_logical_lan(adapter->vdev->unit_address,
- desc[0].desc,
- desc[1].desc,
- desc[2].desc,
- desc[3].desc,
- desc[4].desc,
- desc[5].desc,
- correlator,
- &correlator);
+ desc.desc, 0, 0, 0, 0, 0,
+ correlator, &correlator);
} while ((lpar_rc == H_BUSY) && (retry_count--));
if(lpar_rc != H_SUCCESS && lpar_rc != H_DROPPED) {
- int i;
ibmveth_error_printk("tx: h_send_logical_lan failed with rc=%ld\n", lpar_rc);
- for(i = 0; i < 6; i++) {
- ibmveth_error_printk("tx: desc[%i] valid=%d, len=%d, address=0x%d\n", i,
- desc[i].fields.valid, desc[i].fields.length, desc[i].fields.address);
- }
+ ibmveth_error_printk("tx: valid=%d, len=%d, address=0x%08x\n",
+ (desc.fields.flags_len & IBMVETH_BUF_VALID) ? 1 : 0,
+ skb->len, desc.fields.address);
tx_send_failed++;
tx_dropped++;
} else {
netdev->trans_start = jiffies;
}
- do {
- dma_unmap_single(&adapter->vdev->dev,
- desc[nfrags].fields.address,
- desc[nfrags].fields.length, DMA_TO_DEVICE);
- } while(--nfrags >= 0);
+ if (!used_bounce)
+ dma_unmap_single(&adapter->vdev->dev, data_dma_addr,
+ skb->len, DMA_TO_DEVICE);
out: spin_lock_irqsave(&adapter->stats_lock, flags);
- adapter->stats.tx_dropped += tx_dropped;
- adapter->stats.tx_bytes += tx_bytes;
- adapter->stats.tx_packets += tx_packets;
+ netdev->stats.tx_dropped += tx_dropped;
+ netdev->stats.tx_bytes += tx_bytes;
+ netdev->stats.tx_packets += tx_packets;
adapter->tx_send_failed += tx_send_failed;
adapter->tx_map_failed += tx_map_failed;
spin_unlock_irqrestore(&adapter->stats_lock, flags);
dev_kfree_skb(skb);
- return 0;
+ return NETDEV_TX_OK;
}
static int ibmveth_poll(struct napi_struct *napi, int budget)
netif_receive_skb(skb); /* send it up */
- adapter->stats.rx_packets++;
- adapter->stats.rx_bytes += length;
+ netdev->stats.rx_packets++;
+ netdev->stats.rx_bytes += length;
frames_processed++;
- netdev->last_rx = jiffies;
}
} while (frames_processed < budget);
ibmveth_assert(lpar_rc == H_SUCCESS);
- netif_rx_complete(netdev, napi);
+ napi_complete(napi);
if (ibmveth_rxq_pending_buffer(adapter) &&
- netif_rx_reschedule(netdev, napi)) {
+ napi_reschedule(napi)) {
lpar_rc = h_vio_signal(adapter->vdev->unit_address,
VIO_IRQ_DISABLE);
goto restart_poll;
static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance)
{
struct net_device *netdev = dev_instance;
- struct ibmveth_adapter *adapter = netdev->priv;
+ struct ibmveth_adapter *adapter = netdev_priv(netdev);
unsigned long lpar_rc;
- if (netif_rx_schedule_prep(netdev, &adapter->napi)) {
+ if (napi_schedule_prep(&adapter->napi)) {
lpar_rc = h_vio_signal(adapter->vdev->unit_address,
VIO_IRQ_DISABLE);
ibmveth_assert(lpar_rc == H_SUCCESS);
- __netif_rx_schedule(netdev, &adapter->napi);
+ __napi_schedule(&adapter->napi);
}
return IRQ_HANDLED;
}
-static struct net_device_stats *ibmveth_get_stats(struct net_device *dev)
-{
- struct ibmveth_adapter *adapter = dev->priv;
- return &adapter->stats;
-}
-
static void ibmveth_set_multicast_list(struct net_device *netdev)
{
- struct ibmveth_adapter *adapter = netdev->priv;
+ struct ibmveth_adapter *adapter = netdev_priv(netdev);
unsigned long lpar_rc;
- if((netdev->flags & IFF_PROMISC) || (netdev->mc_count > adapter->mcastFilterSize)) {
+ if ((netdev->flags & IFF_PROMISC) ||
+ (netdev_mc_count(netdev) > adapter->mcastFilterSize)) {
lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address,
IbmVethMcastEnableRecv |
IbmVethMcastDisableFiltering,
ibmveth_error_printk("h_multicast_ctrl rc=%ld when entering promisc mode\n", lpar_rc);
}
} else {
- struct dev_mc_list *mclist = netdev->mc_list;
- int i;
+ struct dev_mc_list *mclist;
/* clear the filter table & disable filtering */
lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address,
IbmVethMcastEnableRecv |
ibmveth_error_printk("h_multicast_ctrl rc=%ld when attempting to clear filter table\n", lpar_rc);
}
/* add the addresses to the filter table */
- for(i = 0; i < netdev->mc_count; ++i, mclist = mclist->next) {
+ netdev_for_each_mc_addr(mclist, netdev) {
// add the multicast address to the filter table
unsigned long mcast_addr = 0;
memcpy(((char *)&mcast_addr)+2, mclist->dmi_addr, 6);
static int ibmveth_change_mtu(struct net_device *dev, int new_mtu)
{
- struct ibmveth_adapter *adapter = dev->priv;
+ struct ibmveth_adapter *adapter = netdev_priv(dev);
+ struct vio_dev *viodev = adapter->vdev;
int new_mtu_oh = new_mtu + IBMVETH_BUFF_OH;
- int reinit = 0;
- int i, rc;
+ int i;
if (new_mtu < IBMVETH_MAX_MTU)
return -EINVAL;
if (i == IbmVethNumBufferPools)
return -EINVAL;
+ /* Deactivate all the buffer pools so that the next loop can activate
+ only the buffer pools necessary to hold the new MTU */
+ for (i = 0; i < IbmVethNumBufferPools; i++)
+ if (adapter->rx_buff_pool[i].active) {
+ ibmveth_free_buffer_pool(adapter,
+ &adapter->rx_buff_pool[i]);
+ adapter->rx_buff_pool[i].active = 0;
+ }
+
/* Look for an active buffer pool that can hold the new MTU */
for(i = 0; i<IbmVethNumBufferPools; i++) {
- if (!adapter->rx_buff_pool[i].active) {
- adapter->rx_buff_pool[i].active = 1;
- reinit = 1;
- }
+ adapter->rx_buff_pool[i].active = 1;
if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size) {
- if (reinit && netif_running(adapter->netdev)) {
+ if (netif_running(adapter->netdev)) {
adapter->pool_config = 1;
ibmveth_close(adapter->netdev);
adapter->pool_config = 0;
dev->mtu = new_mtu;
- if ((rc = ibmveth_open(adapter->netdev)))
- return rc;
- } else
- dev->mtu = new_mtu;
+ vio_cmo_set_dev_desired(viodev,
+ ibmveth_get_desired_dma
+ (viodev));
+ return ibmveth_open(adapter->netdev);
+ }
+ dev->mtu = new_mtu;
+ vio_cmo_set_dev_desired(viodev,
+ ibmveth_get_desired_dma
+ (viodev));
return 0;
}
}
#ifdef CONFIG_NET_POLL_CONTROLLER
static void ibmveth_poll_controller(struct net_device *dev)
{
- ibmveth_replenish_task(dev->priv);
+ ibmveth_replenish_task(netdev_priv(dev));
ibmveth_interrupt(dev->irq, dev);
}
#endif
+/**
+ * ibmveth_get_desired_dma - Calculate IO memory desired by the driver
+ *
+ * @vdev: struct vio_dev for the device whose desired IO mem is to be returned
+ *
+ * Return value:
+ * Number of bytes of IO data the driver will need to perform well.
+ */
+static unsigned long ibmveth_get_desired_dma(struct vio_dev *vdev)
+{
+ struct net_device *netdev = dev_get_drvdata(&vdev->dev);
+ struct ibmveth_adapter *adapter;
+ unsigned long ret;
+ int i;
+ int rxqentries = 1;
+
+ /* netdev inits at probe time along with the structures we need below*/
+ if (netdev == NULL)
+ return IOMMU_PAGE_ALIGN(IBMVETH_IO_ENTITLEMENT_DEFAULT);
+
+ adapter = netdev_priv(netdev);
+
+ ret = IBMVETH_BUFF_LIST_SIZE + IBMVETH_FILT_LIST_SIZE;
+ ret += IOMMU_PAGE_ALIGN(netdev->mtu);
+
+ for (i = 0; i < IbmVethNumBufferPools; i++) {
+ /* add the size of the active receive buffers */
+ if (adapter->rx_buff_pool[i].active)
+ ret +=
+ adapter->rx_buff_pool[i].size *
+ IOMMU_PAGE_ALIGN(adapter->rx_buff_pool[i].
+ buff_size);
+ rxqentries += adapter->rx_buff_pool[i].size;
+ }
+ /* add the size of the receive queue entries */
+ ret += IOMMU_PAGE_ALIGN(rxqentries * sizeof(struct ibmveth_rx_q_entry));
+
+ return ret;
+}
+
+static const struct net_device_ops ibmveth_netdev_ops = {
+ .ndo_open = ibmveth_open,
+ .ndo_stop = ibmveth_close,
+ .ndo_start_xmit = ibmveth_start_xmit,
+ .ndo_set_multicast_list = ibmveth_set_multicast_list,
+ .ndo_do_ioctl = ibmveth_ioctl,
+ .ndo_change_mtu = ibmveth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = eth_mac_addr,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = ibmveth_poll_controller,
+#endif
+};
+
static int __devinit ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id)
{
int rc, i;
long ret;
struct net_device *netdev;
struct ibmveth_adapter *adapter;
- union ibmveth_illan_attributes set_attr, ret_attr;
+ unsigned long set_attr, ret_attr;
unsigned char *mac_addr_p;
unsigned int *mcastFilterSize_p;
if(!netdev)
return -ENOMEM;
- SET_MODULE_OWNER(netdev);
-
- adapter = netdev->priv;
- dev->dev.driver_data = netdev;
+ adapter = netdev_priv(netdev);
+ dev_set_drvdata(&dev->dev, netdev);
adapter->vdev = dev;
adapter->netdev = netdev;
memcpy(&adapter->mac_addr, mac_addr_p, 6);
netdev->irq = dev->irq;
- netdev->open = ibmveth_open;
- netdev->stop = ibmveth_close;
- netdev->hard_start_xmit = ibmveth_start_xmit;
- netdev->get_stats = ibmveth_get_stats;
- netdev->set_multicast_list = ibmveth_set_multicast_list;
- netdev->do_ioctl = ibmveth_ioctl;
- netdev->ethtool_ops = &netdev_ethtool_ops;
- netdev->change_mtu = ibmveth_change_mtu;
+ netdev->netdev_ops = &ibmveth_netdev_ops;
+ netdev->ethtool_ops = &netdev_ethtool_ops;
SET_NETDEV_DEV(netdev, &dev->dev);
-#ifdef CONFIG_NET_POLL_CONTROLLER
- netdev->poll_controller = ibmveth_poll_controller;
-#endif
netdev->features |= NETIF_F_LLTX;
spin_lock_init(&adapter->stats_lock);
- memcpy(&netdev->dev_addr, &adapter->mac_addr, netdev->addr_len);
+ memcpy(netdev->dev_addr, &adapter->mac_addr, netdev->addr_len);
for(i = 0; i<IbmVethNumBufferPools; i++) {
struct kobject *kobj = &adapter->rx_buff_pool[i].kobj;
+ int error;
+
ibmveth_init_buffer_pool(&adapter->rx_buff_pool[i], i,
pool_count[i], pool_size[i],
pool_active[i]);
- kobj->parent = &dev->dev.kobj;
- sprintf(kobj->name, "pool%d", i);
- kobj->ktype = &ktype_veth_pool;
- kobject_register(kobj);
+ error = kobject_init_and_add(kobj, &ktype_veth_pool,
+ &dev->dev.kobj, "pool%d", i);
+ if (!error)
+ kobject_uevent(kobj, KOBJ_ADD);
}
ibmveth_debug_printk("adapter @ 0x%p\n", adapter);
ibmveth_debug_printk("registering netdev...\n");
- ret = h_illan_attributes(dev->unit_address, 0, 0, &ret_attr.desc);
+ ret = h_illan_attributes(dev->unit_address, 0, 0, &ret_attr);
- if (ret == H_SUCCESS && !ret_attr.fields.active_trunk &&
- !ret_attr.fields.trunk_priority &&
- ret_attr.fields.csum_offload_padded_pkt_support) {
- set_attr.desc = 0;
- set_attr.fields.tcp_csum_offload_ipv4 = 1;
+ if (ret == H_SUCCESS && !(ret_attr & IBMVETH_ILLAN_ACTIVE_TRUNK) &&
+ !(ret_attr & IBMVETH_ILLAN_TRUNK_PRI_MASK) &&
+ (ret_attr & IBMVETH_ILLAN_PADDED_PKT_CSUM)) {
+ set_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM;
- ret = h_illan_attributes(dev->unit_address, 0, set_attr.desc,
- &ret_attr.desc);
+ ret = h_illan_attributes(dev->unit_address, 0, set_attr, &ret_attr);
if (ret == H_SUCCESS) {
adapter->rx_csum = 1;
netdev->features |= NETIF_F_IP_CSUM;
} else
- ret = h_illan_attributes(dev->unit_address, set_attr.desc,
- 0, &ret_attr.desc);
+ ret = h_illan_attributes(dev->unit_address, set_attr, 0, &ret_attr);
}
rc = register_netdev(netdev);
static int __devexit ibmveth_remove(struct vio_dev *dev)
{
- struct net_device *netdev = dev->dev.driver_data;
- struct ibmveth_adapter *adapter = netdev->priv;
+ struct net_device *netdev = dev_get_drvdata(&dev->dev);
+ struct ibmveth_adapter *adapter = netdev_priv(netdev);
int i;
for(i = 0; i<IbmVethNumBufferPools; i++)
- kobject_unregister(&adapter->rx_buff_pool[i].kobj);
+ kobject_put(&adapter->rx_buff_pool[i].kobj);
unregister_netdev(netdev);
ibmveth_proc_unregister_adapter(adapter);
free_netdev(netdev);
+ dev_set_drvdata(&dev->dev, NULL);
+
return 0;
}
{
ibmveth_proc_dir = proc_mkdir(IBMVETH_PROC_DIR, init_net.proc_net);
if (ibmveth_proc_dir) {
- SET_MODULE_OWNER(ibmveth_proc_dir);
}
}
remove_proc_entry(IBMVETH_PROC_DIR, init_net.proc_net);
}
-static void *ibmveth_seq_start(struct seq_file *seq, loff_t *pos)
-{
- if (*pos == 0) {
- return (void *)1;
- } else {
- return NULL;
- }
-}
-
-static void *ibmveth_seq_next(struct seq_file *seq, void *v, loff_t *pos)
-{
- ++*pos;
- return NULL;
-}
-
-static void ibmveth_seq_stop(struct seq_file *seq, void *v)
-{
-}
-
-static int ibmveth_seq_show(struct seq_file *seq, void *v)
+static int ibmveth_show(struct seq_file *seq, void *v)
{
struct ibmveth_adapter *adapter = seq->private;
- char *current_mac = ((char*) &adapter->netdev->dev_addr);
- char *firmware_mac = ((char*) &adapter->mac_addr) ;
+ char *current_mac = (char *) adapter->netdev->dev_addr;
+ char *firmware_mac = (char *) &adapter->mac_addr;
seq_printf(seq, "%s %s\n\n", ibmveth_driver_string, ibmveth_driver_version);
seq_printf(seq, "Unit Address: 0x%x\n", adapter->vdev->unit_address);
- seq_printf(seq, "Current MAC: %02X:%02X:%02X:%02X:%02X:%02X\n",
- current_mac[0], current_mac[1], current_mac[2],
- current_mac[3], current_mac[4], current_mac[5]);
- seq_printf(seq, "Firmware MAC: %02X:%02X:%02X:%02X:%02X:%02X\n",
- firmware_mac[0], firmware_mac[1], firmware_mac[2],
- firmware_mac[3], firmware_mac[4], firmware_mac[5]);
+ seq_printf(seq, "Current MAC: %pM\n", current_mac);
+ seq_printf(seq, "Firmware MAC: %pM\n", firmware_mac);
seq_printf(seq, "\nAdapter Statistics:\n");
- seq_printf(seq, " TX: skbuffs linearized: %ld\n", adapter->tx_linearized);
- seq_printf(seq, " multi-descriptor sends: %ld\n", adapter->tx_multidesc_send);
- seq_printf(seq, " skb_linearize failures: %ld\n", adapter->tx_linearize_failed);
- seq_printf(seq, " vio_map_single failres: %ld\n", adapter->tx_map_failed);
- seq_printf(seq, " send failures: %ld\n", adapter->tx_send_failed);
- seq_printf(seq, " RX: replenish task cycles: %ld\n", adapter->replenish_task_cycles);
- seq_printf(seq, " alloc_skb_failures: %ld\n", adapter->replenish_no_mem);
- seq_printf(seq, " add buffer failures: %ld\n", adapter->replenish_add_buff_failure);
- seq_printf(seq, " invalid buffers: %ld\n", adapter->rx_invalid_buffer);
- seq_printf(seq, " no buffers: %ld\n", adapter->rx_no_buffer);
+ seq_printf(seq, " TX: vio_map_single failres: %lld\n", adapter->tx_map_failed);
+ seq_printf(seq, " send failures: %lld\n", adapter->tx_send_failed);
+ seq_printf(seq, " RX: replenish task cycles: %lld\n", adapter->replenish_task_cycles);
+ seq_printf(seq, " alloc_skb_failures: %lld\n", adapter->replenish_no_mem);
+ seq_printf(seq, " add buffer failures: %lld\n", adapter->replenish_add_buff_failure);
+ seq_printf(seq, " invalid buffers: %lld\n", adapter->rx_invalid_buffer);
+ seq_printf(seq, " no buffers: %lld\n", adapter->rx_no_buffer);
return 0;
}
-static struct seq_operations ibmveth_seq_ops = {
- .start = ibmveth_seq_start,
- .next = ibmveth_seq_next,
- .stop = ibmveth_seq_stop,
- .show = ibmveth_seq_show,
-};
static int ibmveth_proc_open(struct inode *inode, struct file *file)
{
- struct seq_file *seq;
- struct proc_dir_entry *proc;
- int rc;
-
- rc = seq_open(file, &ibmveth_seq_ops);
- if (!rc) {
- /* recover the pointer buried in proc_dir_entry data */
- seq = file->private_data;
- proc = PDE(inode);
- seq->private = proc->data;
- }
- return rc;
+ return single_open(file, ibmveth_show, PDE(inode)->data);
}
static const struct file_operations ibmveth_proc_fops = {
.open = ibmveth_proc_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = seq_release,
+ .release = single_release,
};
static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter)
if (ibmveth_proc_dir) {
char u_addr[10];
sprintf(u_addr, "%x", adapter->vdev->unit_address);
- entry = create_proc_entry(u_addr, S_IFREG, ibmveth_proc_dir);
- if (!entry) {
+ entry = proc_create_data(u_addr, S_IFREG, ibmveth_proc_dir,
+ &ibmveth_proc_fops, adapter);
+ if (!entry)
ibmveth_error_printk("Cannot create adapter proc entry");
- } else {
- entry->data = (void *) adapter;
- entry->proc_fops = &ibmveth_proc_fops;
- SET_MODULE_OWNER(entry);
- }
}
return;
}
struct ibmveth_buff_pool *pool = container_of(kobj,
struct ibmveth_buff_pool,
kobj);
- struct net_device *netdev =
- container_of(kobj->parent, struct device, kobj)->driver_data;
- struct ibmveth_adapter *adapter = netdev->priv;
+ struct net_device *netdev = dev_get_drvdata(
+ container_of(kobj->parent, struct device, kobj));
+ struct ibmveth_adapter *adapter = netdev_priv(netdev);
long value = simple_strtol(buf, NULL, 10);
long rc;
return -EPERM;
}
- pool->active = 0;
if (netif_running(netdev)) {
adapter->pool_config = 1;
ibmveth_close(netdev);
+ pool->active = 0;
adapter->pool_config = 0;
if ((rc = ibmveth_open(netdev)))
return rc;
}
+ pool->active = 0;
}
} else if (attr == &veth_num_attr) {
if (value <= 0 || value > IBMVETH_MAX_POOL_COUNT)
NULL,
};
-static struct sysfs_ops veth_pool_ops = {
+static const struct sysfs_ops veth_pool_ops = {
.show = veth_pool_show,
.store = veth_pool_store,
};
.id_table = ibmveth_device_table,
.probe = ibmveth_probe,
.remove = ibmveth_remove,
+ .get_desired_dma = ibmveth_get_desired_dma,
.driver = {
.name = ibmveth_driver_name,
.owner = THIS_MODULE,
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff