![Benjamin Herrenschmidt](/assets/img/avatar_default.png)
Remove the now unused "liobn" field in ibmveth which also avoids having insider knowledge of the iommu table in that driver. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
1370 lines
40 KiB
C
1370 lines
40 KiB
C
/**************************************************************************/
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/* */
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/* IBM eServer i/pSeries Virtual Ethernet Device Driver */
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/* Copyright (C) 2003 IBM Corp. */
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/* Originally written by Dave Larson (larson1@us.ibm.com) */
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/* Maintained by Santiago Leon (santil@us.ibm.com) */
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/* */
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/* This program is free software; you can redistribute it and/or modify */
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/* it under the terms of the GNU General Public License as published by */
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/* the Free Software Foundation; either version 2 of the License, or */
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/* (at your option) any later version. */
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/* */
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/* This program is distributed in the hope that it will be useful, */
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/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
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/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
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/* GNU General Public License for more details. */
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/* */
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/* You should have received a copy of the GNU General Public License */
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/* along with this program; if not, write to the Free Software */
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/* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 */
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/* USA */
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/* */
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/* This module contains the implementation of a virtual ethernet device */
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/* for use with IBM i/pSeries LPAR Linux. It utilizes the logical LAN */
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/* option of the RS/6000 Platform Architechture to interface with virtual */
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/* ethernet NICs that are presented to the partition by the hypervisor. */
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/* */
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/**************************************************************************/
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/*
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TODO:
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- remove frag processing code - no longer needed
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- add support for sysfs
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- possibly remove procfs support
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/dma-mapping.h>
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#include <linux/kernel.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/mm.h>
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#include <linux/ethtool.h>
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#include <linux/proc_fs.h>
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#include <asm/semaphore.h>
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#include <asm/hvcall.h>
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#include <asm/atomic.h>
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#include <asm/vio.h>
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#include <asm/uaccess.h>
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#include <linux/seq_file.h>
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#include "ibmveth.h"
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#undef DEBUG
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#define ibmveth_printk(fmt, args...) \
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printk(KERN_DEBUG "%s: " fmt, __FILE__, ## args)
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#define ibmveth_error_printk(fmt, args...) \
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printk(KERN_ERR "(%s:%3.3d ua:%x) ERROR: " fmt, __FILE__, __LINE__ , adapter->vdev->unit_address, ## args)
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#ifdef DEBUG
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#define ibmveth_debug_printk_no_adapter(fmt, args...) \
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printk(KERN_DEBUG "(%s:%3.3d): " fmt, __FILE__, __LINE__ , ## args)
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#define ibmveth_debug_printk(fmt, args...) \
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printk(KERN_DEBUG "(%s:%3.3d ua:%x): " fmt, __FILE__, __LINE__ , adapter->vdev->unit_address, ## args)
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#define ibmveth_assert(expr) \
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if(!(expr)) { \
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printk(KERN_DEBUG "assertion failed (%s:%3.3d ua:%x): %s\n", __FILE__, __LINE__, adapter->vdev->unit_address, #expr); \
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BUG(); \
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}
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#else
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#define ibmveth_debug_printk_no_adapter(fmt, args...)
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#define ibmveth_debug_printk(fmt, args...)
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#define ibmveth_assert(expr)
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#endif
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static int ibmveth_open(struct net_device *dev);
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static int ibmveth_close(struct net_device *dev);
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static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
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static int ibmveth_poll(struct net_device *dev, int *budget);
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static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *dev);
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static struct net_device_stats *ibmveth_get_stats(struct net_device *dev);
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static void ibmveth_set_multicast_list(struct net_device *dev);
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static int ibmveth_change_mtu(struct net_device *dev, int new_mtu);
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static void ibmveth_proc_register_driver(void);
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static void ibmveth_proc_unregister_driver(void);
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static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter);
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static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter);
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static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance);
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static inline void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter);
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static struct kobj_type ktype_veth_pool;
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#ifdef CONFIG_PROC_FS
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#define IBMVETH_PROC_DIR "net/ibmveth"
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static struct proc_dir_entry *ibmveth_proc_dir;
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#endif
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static const char ibmveth_driver_name[] = "ibmveth";
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static const char ibmveth_driver_string[] = "IBM i/pSeries Virtual Ethernet Driver";
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#define ibmveth_driver_version "1.03"
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MODULE_AUTHOR("Santiago Leon <santil@us.ibm.com>");
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MODULE_DESCRIPTION("IBM i/pSeries Virtual Ethernet Driver");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(ibmveth_driver_version);
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/* simple methods of getting data from the current rxq entry */
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static inline int ibmveth_rxq_pending_buffer(struct ibmveth_adapter *adapter)
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{
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return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].toggle == adapter->rx_queue.toggle);
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}
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static inline int ibmveth_rxq_buffer_valid(struct ibmveth_adapter *adapter)
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{
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return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].valid);
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}
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static inline int ibmveth_rxq_frame_offset(struct ibmveth_adapter *adapter)
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{
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return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].offset);
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}
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static inline int ibmveth_rxq_frame_length(struct ibmveth_adapter *adapter)
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{
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return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].length);
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}
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/* setup the initial settings for a buffer pool */
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static void ibmveth_init_buffer_pool(struct ibmveth_buff_pool *pool, u32 pool_index, u32 pool_size, u32 buff_size, u32 pool_active)
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{
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pool->size = pool_size;
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pool->index = pool_index;
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pool->buff_size = buff_size;
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pool->threshold = pool_size / 2;
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pool->active = pool_active;
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}
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/* allocate and setup an buffer pool - called during open */
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static int ibmveth_alloc_buffer_pool(struct ibmveth_buff_pool *pool)
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{
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int i;
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pool->free_map = kmalloc(sizeof(u16) * pool->size, GFP_KERNEL);
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if(!pool->free_map) {
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return -1;
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}
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pool->dma_addr = kmalloc(sizeof(dma_addr_t) * pool->size, GFP_KERNEL);
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if(!pool->dma_addr) {
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kfree(pool->free_map);
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pool->free_map = NULL;
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return -1;
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}
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pool->skbuff = kmalloc(sizeof(void*) * pool->size, GFP_KERNEL);
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if(!pool->skbuff) {
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kfree(pool->dma_addr);
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pool->dma_addr = NULL;
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kfree(pool->free_map);
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pool->free_map = NULL;
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return -1;
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}
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memset(pool->skbuff, 0, sizeof(void*) * pool->size);
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memset(pool->dma_addr, 0, sizeof(dma_addr_t) * pool->size);
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for(i = 0; i < pool->size; ++i) {
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pool->free_map[i] = i;
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}
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atomic_set(&pool->available, 0);
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pool->producer_index = 0;
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pool->consumer_index = 0;
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return 0;
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}
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/* replenish the buffers for a pool. note that we don't need to
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* skb_reserve these since they are used for incoming...
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*/
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static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, struct ibmveth_buff_pool *pool)
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{
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u32 i;
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u32 count = pool->size - atomic_read(&pool->available);
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u32 buffers_added = 0;
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mb();
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for(i = 0; i < count; ++i) {
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struct sk_buff *skb;
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unsigned int free_index, index;
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u64 correlator;
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union ibmveth_buf_desc desc;
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unsigned long lpar_rc;
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dma_addr_t dma_addr;
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skb = alloc_skb(pool->buff_size, GFP_ATOMIC);
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if(!skb) {
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ibmveth_debug_printk("replenish: unable to allocate skb\n");
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adapter->replenish_no_mem++;
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break;
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}
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free_index = pool->consumer_index;
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pool->consumer_index = (pool->consumer_index + 1) % pool->size;
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index = pool->free_map[free_index];
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ibmveth_assert(index != IBM_VETH_INVALID_MAP);
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ibmveth_assert(pool->skbuff[index] == NULL);
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dma_addr = dma_map_single(&adapter->vdev->dev, skb->data,
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pool->buff_size, DMA_FROM_DEVICE);
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pool->free_map[free_index] = IBM_VETH_INVALID_MAP;
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pool->dma_addr[index] = dma_addr;
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pool->skbuff[index] = skb;
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correlator = ((u64)pool->index << 32) | index;
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*(u64*)skb->data = correlator;
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desc.desc = 0;
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desc.fields.valid = 1;
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desc.fields.length = pool->buff_size;
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desc.fields.address = dma_addr;
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lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc);
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if(lpar_rc != H_SUCCESS) {
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pool->free_map[free_index] = index;
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pool->skbuff[index] = NULL;
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if (pool->consumer_index == 0)
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pool->consumer_index = pool->size - 1;
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else
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pool->consumer_index--;
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dma_unmap_single(&adapter->vdev->dev,
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pool->dma_addr[index], pool->buff_size,
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DMA_FROM_DEVICE);
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dev_kfree_skb_any(skb);
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adapter->replenish_add_buff_failure++;
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break;
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} else {
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buffers_added++;
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adapter->replenish_add_buff_success++;
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}
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}
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mb();
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atomic_add(buffers_added, &(pool->available));
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}
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/* replenish routine */
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static void ibmveth_replenish_task(struct ibmveth_adapter *adapter)
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{
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int i;
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adapter->replenish_task_cycles++;
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for(i = 0; i < IbmVethNumBufferPools; i++)
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if(adapter->rx_buff_pool[i].active)
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ibmveth_replenish_buffer_pool(adapter,
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&adapter->rx_buff_pool[i]);
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adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8);
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}
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/* empty and free ana buffer pool - also used to do cleanup in error paths */
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static void ibmveth_free_buffer_pool(struct ibmveth_adapter *adapter, struct ibmveth_buff_pool *pool)
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{
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int i;
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kfree(pool->free_map);
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pool->free_map = NULL;
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if(pool->skbuff && pool->dma_addr) {
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for(i = 0; i < pool->size; ++i) {
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struct sk_buff *skb = pool->skbuff[i];
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if(skb) {
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dma_unmap_single(&adapter->vdev->dev,
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pool->dma_addr[i],
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pool->buff_size,
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DMA_FROM_DEVICE);
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dev_kfree_skb_any(skb);
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pool->skbuff[i] = NULL;
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}
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}
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}
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if(pool->dma_addr) {
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kfree(pool->dma_addr);
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pool->dma_addr = NULL;
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}
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if(pool->skbuff) {
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kfree(pool->skbuff);
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pool->skbuff = NULL;
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}
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}
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/* remove a buffer from a pool */
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static void ibmveth_remove_buffer_from_pool(struct ibmveth_adapter *adapter, u64 correlator)
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{
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unsigned int pool = correlator >> 32;
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unsigned int index = correlator & 0xffffffffUL;
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unsigned int free_index;
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struct sk_buff *skb;
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ibmveth_assert(pool < IbmVethNumBufferPools);
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ibmveth_assert(index < adapter->rx_buff_pool[pool].size);
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skb = adapter->rx_buff_pool[pool].skbuff[index];
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ibmveth_assert(skb != NULL);
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adapter->rx_buff_pool[pool].skbuff[index] = NULL;
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dma_unmap_single(&adapter->vdev->dev,
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adapter->rx_buff_pool[pool].dma_addr[index],
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adapter->rx_buff_pool[pool].buff_size,
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DMA_FROM_DEVICE);
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free_index = adapter->rx_buff_pool[pool].producer_index;
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adapter->rx_buff_pool[pool].producer_index
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= (adapter->rx_buff_pool[pool].producer_index + 1)
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% adapter->rx_buff_pool[pool].size;
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adapter->rx_buff_pool[pool].free_map[free_index] = index;
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mb();
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atomic_dec(&(adapter->rx_buff_pool[pool].available));
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}
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/* get the current buffer on the rx queue */
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static inline struct sk_buff *ibmveth_rxq_get_buffer(struct ibmveth_adapter *adapter)
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{
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u64 correlator = adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator;
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unsigned int pool = correlator >> 32;
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unsigned int index = correlator & 0xffffffffUL;
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ibmveth_assert(pool < IbmVethNumBufferPools);
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ibmveth_assert(index < adapter->rx_buff_pool[pool].size);
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return adapter->rx_buff_pool[pool].skbuff[index];
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}
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/* recycle the current buffer on the rx queue */
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static void ibmveth_rxq_recycle_buffer(struct ibmveth_adapter *adapter)
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{
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u32 q_index = adapter->rx_queue.index;
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u64 correlator = adapter->rx_queue.queue_addr[q_index].correlator;
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unsigned int pool = correlator >> 32;
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unsigned int index = correlator & 0xffffffffUL;
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union ibmveth_buf_desc desc;
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unsigned long lpar_rc;
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ibmveth_assert(pool < IbmVethNumBufferPools);
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ibmveth_assert(index < adapter->rx_buff_pool[pool].size);
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if(!adapter->rx_buff_pool[pool].active) {
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ibmveth_rxq_harvest_buffer(adapter);
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ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[pool]);
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return;
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}
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desc.desc = 0;
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desc.fields.valid = 1;
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desc.fields.length = adapter->rx_buff_pool[pool].buff_size;
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desc.fields.address = adapter->rx_buff_pool[pool].dma_addr[index];
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lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc);
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if(lpar_rc != H_SUCCESS) {
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ibmveth_debug_printk("h_add_logical_lan_buffer failed during recycle rc=%ld", lpar_rc);
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ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator);
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}
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if(++adapter->rx_queue.index == adapter->rx_queue.num_slots) {
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adapter->rx_queue.index = 0;
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adapter->rx_queue.toggle = !adapter->rx_queue.toggle;
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}
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}
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static inline void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter)
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{
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ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator);
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if(++adapter->rx_queue.index == adapter->rx_queue.num_slots) {
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adapter->rx_queue.index = 0;
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adapter->rx_queue.toggle = !adapter->rx_queue.toggle;
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}
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}
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static void ibmveth_cleanup(struct ibmveth_adapter *adapter)
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{
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int i;
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if(adapter->buffer_list_addr != NULL) {
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if(!dma_mapping_error(adapter->buffer_list_dma)) {
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dma_unmap_single(&adapter->vdev->dev,
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adapter->buffer_list_dma, 4096,
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DMA_BIDIRECTIONAL);
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adapter->buffer_list_dma = DMA_ERROR_CODE;
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}
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free_page((unsigned long)adapter->buffer_list_addr);
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adapter->buffer_list_addr = NULL;
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}
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if(adapter->filter_list_addr != NULL) {
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if(!dma_mapping_error(adapter->filter_list_dma)) {
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dma_unmap_single(&adapter->vdev->dev,
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adapter->filter_list_dma, 4096,
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DMA_BIDIRECTIONAL);
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adapter->filter_list_dma = DMA_ERROR_CODE;
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}
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free_page((unsigned long)adapter->filter_list_addr);
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adapter->filter_list_addr = NULL;
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}
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if(adapter->rx_queue.queue_addr != NULL) {
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if(!dma_mapping_error(adapter->rx_queue.queue_dma)) {
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dma_unmap_single(&adapter->vdev->dev,
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adapter->rx_queue.queue_dma,
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adapter->rx_queue.queue_len,
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DMA_BIDIRECTIONAL);
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adapter->rx_queue.queue_dma = DMA_ERROR_CODE;
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}
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kfree(adapter->rx_queue.queue_addr);
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adapter->rx_queue.queue_addr = NULL;
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}
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for(i = 0; i<IbmVethNumBufferPools; i++)
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if (adapter->rx_buff_pool[i].active)
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ibmveth_free_buffer_pool(adapter,
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&adapter->rx_buff_pool[i]);
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}
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static int ibmveth_register_logical_lan(struct ibmveth_adapter *adapter,
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union ibmveth_buf_desc rxq_desc, u64 mac_address)
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{
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int rc, try_again = 1;
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/* After a kexec the adapter will still be open, so our attempt to
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* open it will fail. So if we get a failure we free the adapter and
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* try again, but only once. */
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retry:
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rc = h_register_logical_lan(adapter->vdev->unit_address,
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adapter->buffer_list_dma, rxq_desc.desc,
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adapter->filter_list_dma, mac_address);
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if (rc != H_SUCCESS && try_again) {
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do {
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rc = h_free_logical_lan(adapter->vdev->unit_address);
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} while (H_IS_LONG_BUSY(rc) || (rc == H_BUSY));
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try_again = 0;
|
|
goto retry;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int ibmveth_open(struct net_device *netdev)
|
|
{
|
|
struct ibmveth_adapter *adapter = netdev->priv;
|
|
u64 mac_address = 0;
|
|
int rxq_entries = 1;
|
|
unsigned long lpar_rc;
|
|
int rc;
|
|
union ibmveth_buf_desc rxq_desc;
|
|
int i;
|
|
|
|
ibmveth_debug_printk("open starting\n");
|
|
|
|
for(i = 0; i<IbmVethNumBufferPools; i++)
|
|
rxq_entries += adapter->rx_buff_pool[i].size;
|
|
|
|
adapter->buffer_list_addr = (void*) get_zeroed_page(GFP_KERNEL);
|
|
adapter->filter_list_addr = (void*) get_zeroed_page(GFP_KERNEL);
|
|
|
|
if(!adapter->buffer_list_addr || !adapter->filter_list_addr) {
|
|
ibmveth_error_printk("unable to allocate filter or buffer list pages\n");
|
|
ibmveth_cleanup(adapter);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
adapter->rx_queue.queue_len = sizeof(struct ibmveth_rx_q_entry) * rxq_entries;
|
|
adapter->rx_queue.queue_addr = kmalloc(adapter->rx_queue.queue_len, GFP_KERNEL);
|
|
|
|
if(!adapter->rx_queue.queue_addr) {
|
|
ibmveth_error_printk("unable to allocate rx queue pages\n");
|
|
ibmveth_cleanup(adapter);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
adapter->buffer_list_dma = dma_map_single(&adapter->vdev->dev,
|
|
adapter->buffer_list_addr, 4096, DMA_BIDIRECTIONAL);
|
|
adapter->filter_list_dma = dma_map_single(&adapter->vdev->dev,
|
|
adapter->filter_list_addr, 4096, DMA_BIDIRECTIONAL);
|
|
adapter->rx_queue.queue_dma = dma_map_single(&adapter->vdev->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))) {
|
|
ibmveth_error_printk("unable to map filter or buffer list pages\n");
|
|
ibmveth_cleanup(adapter);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
adapter->rx_queue.index = 0;
|
|
adapter->rx_queue.num_slots = rxq_entries;
|
|
adapter->rx_queue.toggle = 1;
|
|
|
|
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.address = adapter->rx_queue.queue_dma;
|
|
|
|
ibmveth_debug_printk("buffer list @ 0x%p\n", adapter->buffer_list_addr);
|
|
ibmveth_debug_printk("filter list @ 0x%p\n", adapter->filter_list_addr);
|
|
ibmveth_debug_printk("receive q @ 0x%p\n", adapter->rx_queue.queue_addr);
|
|
|
|
h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE);
|
|
|
|
lpar_rc = ibmveth_register_logical_lan(adapter, rxq_desc, mac_address);
|
|
|
|
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",
|
|
adapter->buffer_list_dma,
|
|
adapter->filter_list_dma,
|
|
rxq_desc.desc,
|
|
mac_address);
|
|
ibmveth_cleanup(adapter);
|
|
return -ENONET;
|
|
}
|
|
|
|
for(i = 0; i<IbmVethNumBufferPools; i++) {
|
|
if(!adapter->rx_buff_pool[i].active)
|
|
continue;
|
|
if (ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[i])) {
|
|
ibmveth_error_printk("unable to alloc pool\n");
|
|
adapter->rx_buff_pool[i].active = 0;
|
|
ibmveth_cleanup(adapter);
|
|
return -ENOMEM ;
|
|
}
|
|
}
|
|
|
|
ibmveth_debug_printk("registering irq 0x%x\n", netdev->irq);
|
|
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);
|
|
} while (H_IS_LONG_BUSY(rc) || (rc == H_BUSY));
|
|
|
|
ibmveth_cleanup(adapter);
|
|
return rc;
|
|
}
|
|
|
|
ibmveth_debug_printk("initial replenish cycle\n");
|
|
ibmveth_interrupt(netdev->irq, netdev);
|
|
|
|
netif_start_queue(netdev);
|
|
|
|
ibmveth_debug_printk("open complete\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ibmveth_close(struct net_device *netdev)
|
|
{
|
|
struct ibmveth_adapter *adapter = netdev->priv;
|
|
long lpar_rc;
|
|
|
|
ibmveth_debug_printk("close starting\n");
|
|
|
|
if (!adapter->pool_config)
|
|
netif_stop_queue(netdev);
|
|
|
|
free_irq(netdev->irq, netdev);
|
|
|
|
do {
|
|
lpar_rc = h_free_logical_lan(adapter->vdev->unit_address);
|
|
} while (H_IS_LONG_BUSY(lpar_rc) || (lpar_rc == H_BUSY));
|
|
|
|
if(lpar_rc != H_SUCCESS)
|
|
{
|
|
ibmveth_error_printk("h_free_logical_lan failed with %lx, continuing with close\n",
|
|
lpar_rc);
|
|
}
|
|
|
|
adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8);
|
|
|
|
ibmveth_cleanup(adapter);
|
|
|
|
ibmveth_debug_printk("close complete\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) {
|
|
cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE);
|
|
cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | ADVERTISED_FIBRE);
|
|
cmd->speed = SPEED_1000;
|
|
cmd->duplex = DUPLEX_FULL;
|
|
cmd->port = PORT_FIBRE;
|
|
cmd->phy_address = 0;
|
|
cmd->transceiver = XCVR_INTERNAL;
|
|
cmd->autoneg = AUTONEG_ENABLE;
|
|
cmd->maxtxpkt = 0;
|
|
cmd->maxrxpkt = 1;
|
|
return 0;
|
|
}
|
|
|
|
static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) {
|
|
strncpy(info->driver, ibmveth_driver_name, sizeof(info->driver) - 1);
|
|
strncpy(info->version, ibmveth_driver_version, sizeof(info->version) - 1);
|
|
}
|
|
|
|
static u32 netdev_get_link(struct net_device *dev) {
|
|
return 1;
|
|
}
|
|
|
|
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,
|
|
};
|
|
|
|
static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
#define page_offset(v) ((unsigned long)(v) & ((1 << 12) - 1))
|
|
|
|
static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *netdev)
|
|
{
|
|
struct ibmveth_adapter *adapter = netdev->priv;
|
|
union ibmveth_buf_desc desc[IbmVethMaxSendFrags];
|
|
unsigned long lpar_rc;
|
|
int nfrags = 0, curfrag;
|
|
unsigned long correlator;
|
|
unsigned long flags;
|
|
unsigned int retry_count;
|
|
unsigned int tx_dropped = 0;
|
|
unsigned int tx_bytes = 0;
|
|
unsigned int tx_packets = 0;
|
|
unsigned int tx_send_failed = 0;
|
|
unsigned int tx_map_failed = 0;
|
|
|
|
|
|
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;
|
|
|
|
if(dma_mapping_error(desc[0].fields.address)) {
|
|
ibmveth_error_printk("tx: unable to map initial fragment\n");
|
|
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(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;
|
|
}
|
|
}
|
|
|
|
/* 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);
|
|
} 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);
|
|
}
|
|
tx_send_failed++;
|
|
tx_dropped++;
|
|
} else {
|
|
tx_packets++;
|
|
tx_bytes += skb->len;
|
|
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);
|
|
|
|
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;
|
|
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;
|
|
}
|
|
|
|
static int ibmveth_poll(struct net_device *netdev, int *budget)
|
|
{
|
|
struct ibmveth_adapter *adapter = netdev->priv;
|
|
int max_frames_to_process = netdev->quota;
|
|
int frames_processed = 0;
|
|
int more_work = 1;
|
|
unsigned long lpar_rc;
|
|
|
|
restart_poll:
|
|
do {
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
if(ibmveth_rxq_pending_buffer(adapter)) {
|
|
struct sk_buff *skb;
|
|
|
|
rmb();
|
|
|
|
if(!ibmveth_rxq_buffer_valid(adapter)) {
|
|
wmb(); /* suggested by larson1 */
|
|
adapter->rx_invalid_buffer++;
|
|
ibmveth_debug_printk("recycling invalid buffer\n");
|
|
ibmveth_rxq_recycle_buffer(adapter);
|
|
} else {
|
|
int length = ibmveth_rxq_frame_length(adapter);
|
|
int offset = ibmveth_rxq_frame_offset(adapter);
|
|
skb = ibmveth_rxq_get_buffer(adapter);
|
|
|
|
ibmveth_rxq_harvest_buffer(adapter);
|
|
|
|
skb_reserve(skb, offset);
|
|
skb_put(skb, length);
|
|
skb->dev = netdev;
|
|
skb->protocol = eth_type_trans(skb, netdev);
|
|
|
|
netif_receive_skb(skb); /* send it up */
|
|
|
|
adapter->stats.rx_packets++;
|
|
adapter->stats.rx_bytes += length;
|
|
frames_processed++;
|
|
netdev->last_rx = jiffies;
|
|
}
|
|
} else {
|
|
more_work = 0;
|
|
}
|
|
} while(more_work && (frames_processed < max_frames_to_process));
|
|
|
|
ibmveth_replenish_task(adapter);
|
|
|
|
if(more_work) {
|
|
/* more work to do - return that we are not done yet */
|
|
netdev->quota -= frames_processed;
|
|
*budget -= frames_processed;
|
|
return 1;
|
|
}
|
|
|
|
/* we think we are done - reenable interrupts, then check once more to make sure we are done */
|
|
lpar_rc = h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_ENABLE);
|
|
|
|
ibmveth_assert(lpar_rc == H_SUCCESS);
|
|
|
|
netif_rx_complete(netdev);
|
|
|
|
if(ibmveth_rxq_pending_buffer(adapter) && netif_rx_reschedule(netdev, frames_processed))
|
|
{
|
|
lpar_rc = h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE);
|
|
ibmveth_assert(lpar_rc == H_SUCCESS);
|
|
more_work = 1;
|
|
goto restart_poll;
|
|
}
|
|
|
|
netdev->quota -= frames_processed;
|
|
*budget -= frames_processed;
|
|
|
|
/* we really are done */
|
|
return 0;
|
|
}
|
|
|
|
static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance)
|
|
{
|
|
struct net_device *netdev = dev_instance;
|
|
struct ibmveth_adapter *adapter = netdev->priv;
|
|
unsigned long lpar_rc;
|
|
|
|
if(netif_rx_schedule_prep(netdev)) {
|
|
lpar_rc = h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE);
|
|
ibmveth_assert(lpar_rc == H_SUCCESS);
|
|
__netif_rx_schedule(netdev);
|
|
}
|
|
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;
|
|
unsigned long lpar_rc;
|
|
|
|
if((netdev->flags & IFF_PROMISC) || (netdev->mc_count > adapter->mcastFilterSize)) {
|
|
lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address,
|
|
IbmVethMcastEnableRecv |
|
|
IbmVethMcastDisableFiltering,
|
|
0);
|
|
if(lpar_rc != H_SUCCESS) {
|
|
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;
|
|
/* clear the filter table & disable filtering */
|
|
lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address,
|
|
IbmVethMcastEnableRecv |
|
|
IbmVethMcastDisableFiltering |
|
|
IbmVethMcastClearFilterTable,
|
|
0);
|
|
if(lpar_rc != H_SUCCESS) {
|
|
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) {
|
|
// add the multicast address to the filter table
|
|
unsigned long mcast_addr = 0;
|
|
memcpy(((char *)&mcast_addr)+2, mclist->dmi_addr, 6);
|
|
lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address,
|
|
IbmVethMcastAddFilter,
|
|
mcast_addr);
|
|
if(lpar_rc != H_SUCCESS) {
|
|
ibmveth_error_printk("h_multicast_ctrl rc=%ld when adding an entry to the filter table\n", lpar_rc);
|
|
}
|
|
}
|
|
|
|
/* re-enable filtering */
|
|
lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address,
|
|
IbmVethMcastEnableFiltering,
|
|
0);
|
|
if(lpar_rc != H_SUCCESS) {
|
|
ibmveth_error_printk("h_multicast_ctrl rc=%ld when enabling filtering\n", lpar_rc);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int ibmveth_change_mtu(struct net_device *dev, int new_mtu)
|
|
{
|
|
struct ibmveth_adapter *adapter = dev->priv;
|
|
int new_mtu_oh = new_mtu + IBMVETH_BUFF_OH;
|
|
int i;
|
|
|
|
if (new_mtu < IBMVETH_MAX_MTU)
|
|
return -EINVAL;
|
|
|
|
/* 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)
|
|
continue;
|
|
if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size) {
|
|
dev->mtu = new_mtu;
|
|
return 0;
|
|
}
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
static void ibmveth_poll_controller(struct net_device *dev)
|
|
{
|
|
ibmveth_replenish_task(dev->priv);
|
|
ibmveth_interrupt(dev->irq, dev);
|
|
}
|
|
#endif
|
|
|
|
static int __devinit ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id)
|
|
{
|
|
int rc, i;
|
|
struct net_device *netdev;
|
|
struct ibmveth_adapter *adapter = NULL;
|
|
|
|
unsigned char *mac_addr_p;
|
|
unsigned int *mcastFilterSize_p;
|
|
|
|
|
|
ibmveth_debug_printk_no_adapter("entering ibmveth_probe for UA 0x%x\n",
|
|
dev->unit_address);
|
|
|
|
mac_addr_p = (unsigned char *) vio_get_attribute(dev, VETH_MAC_ADDR, 0);
|
|
if(!mac_addr_p) {
|
|
printk(KERN_ERR "(%s:%3.3d) ERROR: Can't find VETH_MAC_ADDR "
|
|
"attribute\n", __FILE__, __LINE__);
|
|
return 0;
|
|
}
|
|
|
|
mcastFilterSize_p= (unsigned int *) vio_get_attribute(dev, VETH_MCAST_FILTER_SIZE, 0);
|
|
if(!mcastFilterSize_p) {
|
|
printk(KERN_ERR "(%s:%3.3d) ERROR: Can't find "
|
|
"VETH_MCAST_FILTER_SIZE attribute\n",
|
|
__FILE__, __LINE__);
|
|
return 0;
|
|
}
|
|
|
|
netdev = alloc_etherdev(sizeof(struct ibmveth_adapter));
|
|
|
|
if(!netdev)
|
|
return -ENOMEM;
|
|
|
|
SET_MODULE_OWNER(netdev);
|
|
|
|
adapter = netdev->priv;
|
|
memset(adapter, 0, sizeof(adapter));
|
|
dev->dev.driver_data = netdev;
|
|
|
|
adapter->vdev = dev;
|
|
adapter->netdev = netdev;
|
|
adapter->mcastFilterSize= *mcastFilterSize_p;
|
|
adapter->pool_config = 0;
|
|
|
|
/* Some older boxes running PHYP non-natively have an OF that
|
|
returns a 8-byte local-mac-address field (and the first
|
|
2 bytes have to be ignored) while newer boxes' OF return
|
|
a 6-byte field. Note that IEEE 1275 specifies that
|
|
local-mac-address must be a 6-byte field.
|
|
The RPA doc specifies that the first byte must be 10b, so
|
|
we'll just look for it to solve this 8 vs. 6 byte field issue */
|
|
|
|
if ((*mac_addr_p & 0x3) != 0x02)
|
|
mac_addr_p += 2;
|
|
|
|
adapter->mac_addr = 0;
|
|
memcpy(&adapter->mac_addr, mac_addr_p, 6);
|
|
|
|
netdev->irq = dev->irq;
|
|
netdev->open = ibmveth_open;
|
|
netdev->poll = ibmveth_poll;
|
|
netdev->weight = 16;
|
|
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;
|
|
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);
|
|
|
|
for(i = 0; i<IbmVethNumBufferPools; i++) {
|
|
struct kobject *kobj = &adapter->rx_buff_pool[i].kobj;
|
|
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);
|
|
}
|
|
|
|
ibmveth_debug_printk("adapter @ 0x%p\n", adapter);
|
|
|
|
adapter->buffer_list_dma = DMA_ERROR_CODE;
|
|
adapter->filter_list_dma = DMA_ERROR_CODE;
|
|
adapter->rx_queue.queue_dma = DMA_ERROR_CODE;
|
|
|
|
ibmveth_debug_printk("registering netdev...\n");
|
|
|
|
rc = register_netdev(netdev);
|
|
|
|
if(rc) {
|
|
ibmveth_debug_printk("failed to register netdev rc=%d\n", rc);
|
|
free_netdev(netdev);
|
|
return rc;
|
|
}
|
|
|
|
ibmveth_debug_printk("registered\n");
|
|
|
|
ibmveth_proc_register_adapter(adapter);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __devexit ibmveth_remove(struct vio_dev *dev)
|
|
{
|
|
struct net_device *netdev = dev->dev.driver_data;
|
|
struct ibmveth_adapter *adapter = netdev->priv;
|
|
int i;
|
|
|
|
for(i = 0; i<IbmVethNumBufferPools; i++)
|
|
kobject_unregister(&adapter->rx_buff_pool[i].kobj);
|
|
|
|
unregister_netdev(netdev);
|
|
|
|
ibmveth_proc_unregister_adapter(adapter);
|
|
|
|
free_netdev(netdev);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
static void ibmveth_proc_register_driver(void)
|
|
{
|
|
ibmveth_proc_dir = proc_mkdir(IBMVETH_PROC_DIR, NULL);
|
|
if (ibmveth_proc_dir) {
|
|
SET_MODULE_OWNER(ibmveth_proc_dir);
|
|
}
|
|
}
|
|
|
|
static void ibmveth_proc_unregister_driver(void)
|
|
{
|
|
remove_proc_entry(IBMVETH_PROC_DIR, NULL);
|
|
}
|
|
|
|
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)
|
|
{
|
|
struct ibmveth_adapter *adapter = seq->private;
|
|
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, "\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);
|
|
|
|
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;
|
|
}
|
|
|
|
static struct file_operations ibmveth_proc_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = ibmveth_proc_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = seq_release,
|
|
};
|
|
|
|
static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter)
|
|
{
|
|
struct proc_dir_entry *entry;
|
|
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) {
|
|
ibmveth_error_printk("Cannot create adapter proc entry");
|
|
} else {
|
|
entry->data = (void *) adapter;
|
|
entry->proc_fops = &ibmveth_proc_fops;
|
|
SET_MODULE_OWNER(entry);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter)
|
|
{
|
|
if (ibmveth_proc_dir) {
|
|
char u_addr[10];
|
|
sprintf(u_addr, "%x", adapter->vdev->unit_address);
|
|
remove_proc_entry(u_addr, ibmveth_proc_dir);
|
|
}
|
|
}
|
|
|
|
#else /* CONFIG_PROC_FS */
|
|
static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter)
|
|
{
|
|
}
|
|
|
|
static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter)
|
|
{
|
|
}
|
|
static void ibmveth_proc_register_driver(void)
|
|
{
|
|
}
|
|
|
|
static void ibmveth_proc_unregister_driver(void)
|
|
{
|
|
}
|
|
#endif /* CONFIG_PROC_FS */
|
|
|
|
static struct attribute veth_active_attr;
|
|
static struct attribute veth_num_attr;
|
|
static struct attribute veth_size_attr;
|
|
|
|
static ssize_t veth_pool_show(struct kobject * kobj,
|
|
struct attribute * attr, char * buf)
|
|
{
|
|
struct ibmveth_buff_pool *pool = container_of(kobj,
|
|
struct ibmveth_buff_pool,
|
|
kobj);
|
|
|
|
if (attr == &veth_active_attr)
|
|
return sprintf(buf, "%d\n", pool->active);
|
|
else if (attr == &veth_num_attr)
|
|
return sprintf(buf, "%d\n", pool->size);
|
|
else if (attr == &veth_size_attr)
|
|
return sprintf(buf, "%d\n", pool->buff_size);
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t veth_pool_store(struct kobject * kobj, struct attribute * attr,
|
|
const char * buf, size_t count)
|
|
{
|
|
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;
|
|
long value = simple_strtol(buf, NULL, 10);
|
|
long rc;
|
|
|
|
if (attr == &veth_active_attr) {
|
|
if (value && !pool->active) {
|
|
if(ibmveth_alloc_buffer_pool(pool)) {
|
|
ibmveth_error_printk("unable to alloc pool\n");
|
|
return -ENOMEM;
|
|
}
|
|
pool->active = 1;
|
|
adapter->pool_config = 1;
|
|
ibmveth_close(netdev);
|
|
adapter->pool_config = 0;
|
|
if ((rc = ibmveth_open(netdev)))
|
|
return rc;
|
|
} else if (!value && pool->active) {
|
|
int mtu = netdev->mtu + IBMVETH_BUFF_OH;
|
|
int i;
|
|
/* Make sure there is a buffer pool with buffers that
|
|
can hold a packet of the size of the MTU */
|
|
for(i = 0; i<IbmVethNumBufferPools; i++) {
|
|
if (pool == &adapter->rx_buff_pool[i])
|
|
continue;
|
|
if (!adapter->rx_buff_pool[i].active)
|
|
continue;
|
|
if (mtu < adapter->rx_buff_pool[i].buff_size) {
|
|
pool->active = 0;
|
|
h_free_logical_lan_buffer(adapter->
|
|
vdev->
|
|
unit_address,
|
|
pool->
|
|
buff_size);
|
|
}
|
|
}
|
|
if (pool->active) {
|
|
ibmveth_error_printk("no active pool >= MTU\n");
|
|
return -EPERM;
|
|
}
|
|
}
|
|
} else if (attr == &veth_num_attr) {
|
|
if (value <= 0 || value > IBMVETH_MAX_POOL_COUNT)
|
|
return -EINVAL;
|
|
else {
|
|
adapter->pool_config = 1;
|
|
ibmveth_close(netdev);
|
|
adapter->pool_config = 0;
|
|
pool->size = value;
|
|
if ((rc = ibmveth_open(netdev)))
|
|
return rc;
|
|
}
|
|
} else if (attr == &veth_size_attr) {
|
|
if (value <= IBMVETH_BUFF_OH || value > IBMVETH_MAX_BUF_SIZE)
|
|
return -EINVAL;
|
|
else {
|
|
adapter->pool_config = 1;
|
|
ibmveth_close(netdev);
|
|
adapter->pool_config = 0;
|
|
pool->buff_size = value;
|
|
if ((rc = ibmveth_open(netdev)))
|
|
return rc;
|
|
}
|
|
}
|
|
|
|
/* kick the interrupt handler to allocate/deallocate pools */
|
|
ibmveth_interrupt(netdev->irq, netdev);
|
|
return count;
|
|
}
|
|
|
|
|
|
#define ATTR(_name, _mode) \
|
|
struct attribute veth_##_name##_attr = { \
|
|
.name = __stringify(_name), .mode = _mode, .owner = THIS_MODULE \
|
|
};
|
|
|
|
static ATTR(active, 0644);
|
|
static ATTR(num, 0644);
|
|
static ATTR(size, 0644);
|
|
|
|
static struct attribute * veth_pool_attrs[] = {
|
|
&veth_active_attr,
|
|
&veth_num_attr,
|
|
&veth_size_attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct sysfs_ops veth_pool_ops = {
|
|
.show = veth_pool_show,
|
|
.store = veth_pool_store,
|
|
};
|
|
|
|
static struct kobj_type ktype_veth_pool = {
|
|
.release = NULL,
|
|
.sysfs_ops = &veth_pool_ops,
|
|
.default_attrs = veth_pool_attrs,
|
|
};
|
|
|
|
|
|
static struct vio_device_id ibmveth_device_table[] __devinitdata= {
|
|
{ "network", "IBM,l-lan"},
|
|
{ "", "" }
|
|
};
|
|
MODULE_DEVICE_TABLE(vio, ibmveth_device_table);
|
|
|
|
static struct vio_driver ibmveth_driver = {
|
|
.id_table = ibmveth_device_table,
|
|
.probe = ibmveth_probe,
|
|
.remove = ibmveth_remove,
|
|
.driver = {
|
|
.name = ibmveth_driver_name,
|
|
.owner = THIS_MODULE,
|
|
}
|
|
};
|
|
|
|
static int __init ibmveth_module_init(void)
|
|
{
|
|
ibmveth_printk("%s: %s %s\n", ibmveth_driver_name, ibmveth_driver_string, ibmveth_driver_version);
|
|
|
|
ibmveth_proc_register_driver();
|
|
|
|
return vio_register_driver(&ibmveth_driver);
|
|
}
|
|
|
|
static void __exit ibmveth_module_exit(void)
|
|
{
|
|
vio_unregister_driver(&ibmveth_driver);
|
|
ibmveth_proc_unregister_driver();
|
|
}
|
|
|
|
module_init(ibmveth_module_init);
|
|
module_exit(ibmveth_module_exit);
|