Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /**************************************************************************/ |
| 2 | /* */ |
| 3 | /* IBM eServer i/pSeries Virtual Ethernet Device Driver */ |
| 4 | /* Copyright (C) 2003 IBM Corp. */ |
| 5 | /* Originally written by Dave Larson (larson1@us.ibm.com) */ |
| 6 | /* Maintained by Santiago Leon (santil@us.ibm.com) */ |
| 7 | /* */ |
| 8 | /* This program is free software; you can redistribute it and/or modify */ |
| 9 | /* it under the terms of the GNU General Public License as published by */ |
| 10 | /* the Free Software Foundation; either version 2 of the License, or */ |
| 11 | /* (at your option) any later version. */ |
| 12 | /* */ |
| 13 | /* This program is distributed in the hope that it will be useful, */ |
| 14 | /* but WITHOUT ANY WARRANTY; without even the implied warranty of */ |
| 15 | /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ |
| 16 | /* GNU General Public License for more details. */ |
| 17 | /* */ |
| 18 | /* You should have received a copy of the GNU General Public License */ |
| 19 | /* along with this program; if not, write to the Free Software */ |
| 20 | /* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 */ |
| 21 | /* USA */ |
| 22 | /* */ |
| 23 | /* This module contains the implementation of a virtual ethernet device */ |
| 24 | /* for use with IBM i/pSeries LPAR Linux. It utilizes the logical LAN */ |
| 25 | /* option of the RS/6000 Platform Architechture to interface with virtual */ |
| 26 | /* ethernet NICs that are presented to the partition by the hypervisor. */ |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 27 | /* */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | /**************************************************************************/ |
| 29 | /* |
| 30 | TODO: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | - add support for sysfs |
| 32 | - possibly remove procfs support |
| 33 | */ |
| 34 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <linux/module.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include <linux/types.h> |
| 37 | #include <linux/errno.h> |
| 38 | #include <linux/ioport.h> |
| 39 | #include <linux/dma-mapping.h> |
| 40 | #include <linux/kernel.h> |
| 41 | #include <linux/netdevice.h> |
| 42 | #include <linux/etherdevice.h> |
| 43 | #include <linux/skbuff.h> |
| 44 | #include <linux/init.h> |
| 45 | #include <linux/delay.h> |
| 46 | #include <linux/mm.h> |
| 47 | #include <linux/ethtool.h> |
| 48 | #include <linux/proc_fs.h> |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 49 | #include <linux/in.h> |
| 50 | #include <linux/ip.h> |
Eric W. Biederman | 457c4cb | 2007-09-12 12:01:34 +0200 | [diff] [blame] | 51 | #include <net/net_namespace.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #include <asm/semaphore.h> |
| 53 | #include <asm/hvcall.h> |
| 54 | #include <asm/atomic.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | #include <asm/vio.h> |
| 56 | #include <asm/uaccess.h> |
| 57 | #include <linux/seq_file.h> |
| 58 | |
| 59 | #include "ibmveth.h" |
| 60 | |
Anton Blanchard | 6af37fa | 2005-11-11 14:02:04 +1100 | [diff] [blame] | 61 | #undef DEBUG |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
| 63 | #define ibmveth_printk(fmt, args...) \ |
Olof Johansson | f98baff | 2006-04-12 15:22:29 -0500 | [diff] [blame] | 64 | printk(KERN_DEBUG "%s: " fmt, __FILE__, ## args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | |
| 66 | #define ibmveth_error_printk(fmt, args...) \ |
| 67 | printk(KERN_ERR "(%s:%3.3d ua:%x) ERROR: " fmt, __FILE__, __LINE__ , adapter->vdev->unit_address, ## args) |
| 68 | |
| 69 | #ifdef DEBUG |
| 70 | #define ibmveth_debug_printk_no_adapter(fmt, args...) \ |
| 71 | printk(KERN_DEBUG "(%s:%3.3d): " fmt, __FILE__, __LINE__ , ## args) |
| 72 | #define ibmveth_debug_printk(fmt, args...) \ |
| 73 | printk(KERN_DEBUG "(%s:%3.3d ua:%x): " fmt, __FILE__, __LINE__ , adapter->vdev->unit_address, ## args) |
| 74 | #define ibmveth_assert(expr) \ |
| 75 | if(!(expr)) { \ |
| 76 | printk(KERN_DEBUG "assertion failed (%s:%3.3d ua:%x): %s\n", __FILE__, __LINE__, adapter->vdev->unit_address, #expr); \ |
| 77 | BUG(); \ |
| 78 | } |
| 79 | #else |
| 80 | #define ibmveth_debug_printk_no_adapter(fmt, args...) |
| 81 | #define ibmveth_debug_printk(fmt, args...) |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 82 | #define ibmveth_assert(expr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | #endif |
| 84 | |
| 85 | static int ibmveth_open(struct net_device *dev); |
| 86 | static int ibmveth_close(struct net_device *dev); |
| 87 | static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 88 | static int ibmveth_poll(struct napi_struct *napi, int budget); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *dev); |
| 90 | static struct net_device_stats *ibmveth_get_stats(struct net_device *dev); |
| 91 | static void ibmveth_set_multicast_list(struct net_device *dev); |
| 92 | static int ibmveth_change_mtu(struct net_device *dev, int new_mtu); |
| 93 | static void ibmveth_proc_register_driver(void); |
| 94 | static void ibmveth_proc_unregister_driver(void); |
| 95 | static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter); |
| 96 | static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 97 | static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance); |
Michael Ellerman | 493a684 | 2007-04-17 13:12:55 +1000 | [diff] [blame] | 98 | static void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter); |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 99 | static struct kobj_type ktype_veth_pool; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | |
| 101 | #ifdef CONFIG_PROC_FS |
Eric W. Biederman | 457c4cb | 2007-09-12 12:01:34 +0200 | [diff] [blame] | 102 | #define IBMVETH_PROC_DIR "ibmveth" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | static struct proc_dir_entry *ibmveth_proc_dir; |
| 104 | #endif |
| 105 | |
| 106 | static const char ibmveth_driver_name[] = "ibmveth"; |
| 107 | static const char ibmveth_driver_string[] = "IBM i/pSeries Virtual Ethernet Driver"; |
| 108 | #define ibmveth_driver_version "1.03" |
| 109 | |
| 110 | MODULE_AUTHOR("Santiago Leon <santil@us.ibm.com>"); |
| 111 | MODULE_DESCRIPTION("IBM i/pSeries Virtual Ethernet Driver"); |
| 112 | MODULE_LICENSE("GPL"); |
| 113 | MODULE_VERSION(ibmveth_driver_version); |
| 114 | |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 115 | struct ibmveth_stat { |
| 116 | char name[ETH_GSTRING_LEN]; |
| 117 | int offset; |
| 118 | }; |
| 119 | |
| 120 | #define IBMVETH_STAT_OFF(stat) offsetof(struct ibmveth_adapter, stat) |
| 121 | #define IBMVETH_GET_STAT(a, off) *((u64 *)(((unsigned long)(a)) + off)) |
| 122 | |
| 123 | struct ibmveth_stat ibmveth_stats[] = { |
| 124 | { "replenish_task_cycles", IBMVETH_STAT_OFF(replenish_task_cycles) }, |
| 125 | { "replenish_no_mem", IBMVETH_STAT_OFF(replenish_no_mem) }, |
| 126 | { "replenish_add_buff_failure", IBMVETH_STAT_OFF(replenish_add_buff_failure) }, |
| 127 | { "replenish_add_buff_success", IBMVETH_STAT_OFF(replenish_add_buff_success) }, |
| 128 | { "rx_invalid_buffer", IBMVETH_STAT_OFF(rx_invalid_buffer) }, |
| 129 | { "rx_no_buffer", IBMVETH_STAT_OFF(rx_no_buffer) }, |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 130 | { "tx_map_failed", IBMVETH_STAT_OFF(tx_map_failed) }, |
| 131 | { "tx_send_failed", IBMVETH_STAT_OFF(tx_send_failed) }, |
| 132 | }; |
| 133 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | /* simple methods of getting data from the current rxq entry */ |
| 135 | static inline int ibmveth_rxq_pending_buffer(struct ibmveth_adapter *adapter) |
| 136 | { |
| 137 | return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].toggle == adapter->rx_queue.toggle); |
| 138 | } |
| 139 | |
| 140 | static inline int ibmveth_rxq_buffer_valid(struct ibmveth_adapter *adapter) |
| 141 | { |
| 142 | return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].valid); |
| 143 | } |
| 144 | |
| 145 | static inline int ibmveth_rxq_frame_offset(struct ibmveth_adapter *adapter) |
| 146 | { |
| 147 | return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].offset); |
| 148 | } |
| 149 | |
| 150 | static inline int ibmveth_rxq_frame_length(struct ibmveth_adapter *adapter) |
| 151 | { |
| 152 | return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].length); |
| 153 | } |
| 154 | |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 155 | static inline int ibmveth_rxq_csum_good(struct ibmveth_adapter *adapter) |
| 156 | { |
| 157 | return (adapter->rx_queue.queue_addr[adapter->rx_queue.index].csum_good); |
| 158 | } |
| 159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | /* setup the initial settings for a buffer pool */ |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 161 | static void ibmveth_init_buffer_pool(struct ibmveth_buff_pool *pool, u32 pool_index, u32 pool_size, u32 buff_size, u32 pool_active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | { |
| 163 | pool->size = pool_size; |
| 164 | pool->index = pool_index; |
| 165 | pool->buff_size = buff_size; |
| 166 | pool->threshold = pool_size / 2; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 167 | pool->active = pool_active; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | } |
| 169 | |
| 170 | /* allocate and setup an buffer pool - called during open */ |
| 171 | static int ibmveth_alloc_buffer_pool(struct ibmveth_buff_pool *pool) |
| 172 | { |
| 173 | int i; |
| 174 | |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 175 | pool->free_map = kmalloc(sizeof(u16) * pool->size, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | |
| 177 | if(!pool->free_map) { |
| 178 | return -1; |
| 179 | } |
| 180 | |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 181 | pool->dma_addr = kmalloc(sizeof(dma_addr_t) * pool->size, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | if(!pool->dma_addr) { |
| 183 | kfree(pool->free_map); |
| 184 | pool->free_map = NULL; |
| 185 | return -1; |
| 186 | } |
| 187 | |
| 188 | pool->skbuff = kmalloc(sizeof(void*) * pool->size, GFP_KERNEL); |
| 189 | |
| 190 | if(!pool->skbuff) { |
| 191 | kfree(pool->dma_addr); |
| 192 | pool->dma_addr = NULL; |
| 193 | |
| 194 | kfree(pool->free_map); |
| 195 | pool->free_map = NULL; |
| 196 | return -1; |
| 197 | } |
| 198 | |
| 199 | memset(pool->skbuff, 0, sizeof(void*) * pool->size); |
| 200 | memset(pool->dma_addr, 0, sizeof(dma_addr_t) * pool->size); |
| 201 | |
| 202 | for(i = 0; i < pool->size; ++i) { |
| 203 | pool->free_map[i] = i; |
| 204 | } |
| 205 | |
| 206 | atomic_set(&pool->available, 0); |
| 207 | pool->producer_index = 0; |
| 208 | pool->consumer_index = 0; |
| 209 | |
| 210 | return 0; |
| 211 | } |
| 212 | |
| 213 | /* replenish the buffers for a pool. note that we don't need to |
| 214 | * skb_reserve these since they are used for incoming... |
| 215 | */ |
| 216 | static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, struct ibmveth_buff_pool *pool) |
| 217 | { |
| 218 | u32 i; |
| 219 | u32 count = pool->size - atomic_read(&pool->available); |
| 220 | u32 buffers_added = 0; |
| 221 | |
| 222 | mb(); |
| 223 | |
| 224 | for(i = 0; i < count; ++i) { |
| 225 | struct sk_buff *skb; |
| 226 | unsigned int free_index, index; |
| 227 | u64 correlator; |
| 228 | union ibmveth_buf_desc desc; |
| 229 | unsigned long lpar_rc; |
| 230 | dma_addr_t dma_addr; |
| 231 | |
| 232 | skb = alloc_skb(pool->buff_size, GFP_ATOMIC); |
| 233 | |
| 234 | if(!skb) { |
| 235 | ibmveth_debug_printk("replenish: unable to allocate skb\n"); |
| 236 | adapter->replenish_no_mem++; |
| 237 | break; |
| 238 | } |
| 239 | |
David Gibson | 047a66d | 2006-10-21 10:24:13 -0700 | [diff] [blame] | 240 | free_index = pool->consumer_index; |
| 241 | pool->consumer_index = (pool->consumer_index + 1) % pool->size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | index = pool->free_map[free_index]; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 243 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | ibmveth_assert(index != IBM_VETH_INVALID_MAP); |
| 245 | ibmveth_assert(pool->skbuff[index] == NULL); |
| 246 | |
| 247 | dma_addr = dma_map_single(&adapter->vdev->dev, skb->data, |
| 248 | pool->buff_size, DMA_FROM_DEVICE); |
| 249 | |
| 250 | pool->free_map[free_index] = IBM_VETH_INVALID_MAP; |
| 251 | pool->dma_addr[index] = dma_addr; |
| 252 | pool->skbuff[index] = skb; |
| 253 | |
| 254 | correlator = ((u64)pool->index << 32) | index; |
| 255 | *(u64*)skb->data = correlator; |
| 256 | |
| 257 | desc.desc = 0; |
| 258 | desc.fields.valid = 1; |
| 259 | desc.fields.length = pool->buff_size; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 260 | desc.fields.address = dma_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | |
| 262 | lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 263 | |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 264 | if(lpar_rc != H_SUCCESS) { |
Santiago Leon | 82702d3 | 2005-10-26 10:47:23 -0600 | [diff] [blame] | 265 | pool->free_map[free_index] = index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | pool->skbuff[index] = NULL; |
Santiago Leon | 751ae21 | 2006-10-03 12:24:45 -0500 | [diff] [blame] | 267 | if (pool->consumer_index == 0) |
| 268 | pool->consumer_index = pool->size - 1; |
| 269 | else |
| 270 | pool->consumer_index--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | dma_unmap_single(&adapter->vdev->dev, |
| 272 | pool->dma_addr[index], pool->buff_size, |
| 273 | DMA_FROM_DEVICE); |
| 274 | dev_kfree_skb_any(skb); |
| 275 | adapter->replenish_add_buff_failure++; |
| 276 | break; |
| 277 | } else { |
| 278 | buffers_added++; |
| 279 | adapter->replenish_add_buff_success++; |
| 280 | } |
| 281 | } |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 282 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | mb(); |
| 284 | atomic_add(buffers_added, &(pool->available)); |
| 285 | } |
| 286 | |
Santiago Leon | e2adbcb | 2005-10-26 10:47:08 -0600 | [diff] [blame] | 287 | /* replenish routine */ |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 288 | static void ibmveth_replenish_task(struct ibmveth_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | { |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 290 | int i; |
| 291 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | adapter->replenish_task_cycles++; |
| 293 | |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 294 | for(i = 0; i < IbmVethNumBufferPools; i++) |
| 295 | if(adapter->rx_buff_pool[i].active) |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 296 | ibmveth_replenish_buffer_pool(adapter, |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 297 | &adapter->rx_buff_pool[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | |
| 299 | adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | } |
| 301 | |
| 302 | /* empty and free ana buffer pool - also used to do cleanup in error paths */ |
| 303 | static void ibmveth_free_buffer_pool(struct ibmveth_adapter *adapter, struct ibmveth_buff_pool *pool) |
| 304 | { |
| 305 | int i; |
| 306 | |
Jesper Juhl | b4558ea | 2005-10-28 16:53:13 -0400 | [diff] [blame] | 307 | kfree(pool->free_map); |
| 308 | pool->free_map = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | |
| 310 | if(pool->skbuff && pool->dma_addr) { |
| 311 | for(i = 0; i < pool->size; ++i) { |
| 312 | struct sk_buff *skb = pool->skbuff[i]; |
| 313 | if(skb) { |
| 314 | dma_unmap_single(&adapter->vdev->dev, |
| 315 | pool->dma_addr[i], |
| 316 | pool->buff_size, |
| 317 | DMA_FROM_DEVICE); |
| 318 | dev_kfree_skb_any(skb); |
| 319 | pool->skbuff[i] = NULL; |
| 320 | } |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | if(pool->dma_addr) { |
| 325 | kfree(pool->dma_addr); |
| 326 | pool->dma_addr = NULL; |
| 327 | } |
| 328 | |
| 329 | if(pool->skbuff) { |
| 330 | kfree(pool->skbuff); |
| 331 | pool->skbuff = NULL; |
| 332 | } |
| 333 | } |
| 334 | |
| 335 | /* remove a buffer from a pool */ |
| 336 | static void ibmveth_remove_buffer_from_pool(struct ibmveth_adapter *adapter, u64 correlator) |
| 337 | { |
| 338 | unsigned int pool = correlator >> 32; |
| 339 | unsigned int index = correlator & 0xffffffffUL; |
| 340 | unsigned int free_index; |
| 341 | struct sk_buff *skb; |
| 342 | |
| 343 | ibmveth_assert(pool < IbmVethNumBufferPools); |
| 344 | ibmveth_assert(index < adapter->rx_buff_pool[pool].size); |
| 345 | |
| 346 | skb = adapter->rx_buff_pool[pool].skbuff[index]; |
| 347 | |
| 348 | ibmveth_assert(skb != NULL); |
| 349 | |
| 350 | adapter->rx_buff_pool[pool].skbuff[index] = NULL; |
| 351 | |
| 352 | dma_unmap_single(&adapter->vdev->dev, |
| 353 | adapter->rx_buff_pool[pool].dma_addr[index], |
| 354 | adapter->rx_buff_pool[pool].buff_size, |
| 355 | DMA_FROM_DEVICE); |
| 356 | |
David Gibson | 047a66d | 2006-10-21 10:24:13 -0700 | [diff] [blame] | 357 | free_index = adapter->rx_buff_pool[pool].producer_index; |
| 358 | adapter->rx_buff_pool[pool].producer_index |
| 359 | = (adapter->rx_buff_pool[pool].producer_index + 1) |
| 360 | % adapter->rx_buff_pool[pool].size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | adapter->rx_buff_pool[pool].free_map[free_index] = index; |
| 362 | |
| 363 | mb(); |
| 364 | |
| 365 | atomic_dec(&(adapter->rx_buff_pool[pool].available)); |
| 366 | } |
| 367 | |
| 368 | /* get the current buffer on the rx queue */ |
| 369 | static inline struct sk_buff *ibmveth_rxq_get_buffer(struct ibmveth_adapter *adapter) |
| 370 | { |
| 371 | u64 correlator = adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator; |
| 372 | unsigned int pool = correlator >> 32; |
| 373 | unsigned int index = correlator & 0xffffffffUL; |
| 374 | |
| 375 | ibmveth_assert(pool < IbmVethNumBufferPools); |
| 376 | ibmveth_assert(index < adapter->rx_buff_pool[pool].size); |
| 377 | |
| 378 | return adapter->rx_buff_pool[pool].skbuff[index]; |
| 379 | } |
| 380 | |
| 381 | /* recycle the current buffer on the rx queue */ |
| 382 | static void ibmveth_rxq_recycle_buffer(struct ibmveth_adapter *adapter) |
| 383 | { |
| 384 | u32 q_index = adapter->rx_queue.index; |
| 385 | u64 correlator = adapter->rx_queue.queue_addr[q_index].correlator; |
| 386 | unsigned int pool = correlator >> 32; |
| 387 | unsigned int index = correlator & 0xffffffffUL; |
| 388 | union ibmveth_buf_desc desc; |
| 389 | unsigned long lpar_rc; |
| 390 | |
| 391 | ibmveth_assert(pool < IbmVethNumBufferPools); |
| 392 | ibmveth_assert(index < adapter->rx_buff_pool[pool].size); |
| 393 | |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 394 | if(!adapter->rx_buff_pool[pool].active) { |
| 395 | ibmveth_rxq_harvest_buffer(adapter); |
| 396 | ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[pool]); |
| 397 | return; |
| 398 | } |
| 399 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | desc.desc = 0; |
| 401 | desc.fields.valid = 1; |
| 402 | desc.fields.length = adapter->rx_buff_pool[pool].buff_size; |
| 403 | desc.fields.address = adapter->rx_buff_pool[pool].dma_addr[index]; |
| 404 | |
| 405 | lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 406 | |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 407 | if(lpar_rc != H_SUCCESS) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | ibmveth_debug_printk("h_add_logical_lan_buffer failed during recycle rc=%ld", lpar_rc); |
| 409 | ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator); |
| 410 | } |
| 411 | |
| 412 | if(++adapter->rx_queue.index == adapter->rx_queue.num_slots) { |
| 413 | adapter->rx_queue.index = 0; |
| 414 | adapter->rx_queue.toggle = !adapter->rx_queue.toggle; |
| 415 | } |
| 416 | } |
| 417 | |
Michael Ellerman | 493a684 | 2007-04-17 13:12:55 +1000 | [diff] [blame] | 418 | static void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | { |
| 420 | ibmveth_remove_buffer_from_pool(adapter, adapter->rx_queue.queue_addr[adapter->rx_queue.index].correlator); |
| 421 | |
| 422 | if(++adapter->rx_queue.index == adapter->rx_queue.num_slots) { |
| 423 | adapter->rx_queue.index = 0; |
| 424 | adapter->rx_queue.toggle = !adapter->rx_queue.toggle; |
| 425 | } |
| 426 | } |
| 427 | |
| 428 | static void ibmveth_cleanup(struct ibmveth_adapter *adapter) |
| 429 | { |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 430 | int i; |
| 431 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | if(adapter->buffer_list_addr != NULL) { |
| 433 | if(!dma_mapping_error(adapter->buffer_list_dma)) { |
| 434 | dma_unmap_single(&adapter->vdev->dev, |
| 435 | adapter->buffer_list_dma, 4096, |
| 436 | DMA_BIDIRECTIONAL); |
| 437 | adapter->buffer_list_dma = DMA_ERROR_CODE; |
| 438 | } |
| 439 | free_page((unsigned long)adapter->buffer_list_addr); |
| 440 | adapter->buffer_list_addr = NULL; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 441 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | |
| 443 | if(adapter->filter_list_addr != NULL) { |
| 444 | if(!dma_mapping_error(adapter->filter_list_dma)) { |
| 445 | dma_unmap_single(&adapter->vdev->dev, |
| 446 | adapter->filter_list_dma, 4096, |
| 447 | DMA_BIDIRECTIONAL); |
| 448 | adapter->filter_list_dma = DMA_ERROR_CODE; |
| 449 | } |
| 450 | free_page((unsigned long)adapter->filter_list_addr); |
| 451 | adapter->filter_list_addr = NULL; |
| 452 | } |
| 453 | |
| 454 | if(adapter->rx_queue.queue_addr != NULL) { |
| 455 | if(!dma_mapping_error(adapter->rx_queue.queue_dma)) { |
| 456 | dma_unmap_single(&adapter->vdev->dev, |
| 457 | adapter->rx_queue.queue_dma, |
| 458 | adapter->rx_queue.queue_len, |
| 459 | DMA_BIDIRECTIONAL); |
| 460 | adapter->rx_queue.queue_dma = DMA_ERROR_CODE; |
| 461 | } |
| 462 | kfree(adapter->rx_queue.queue_addr); |
| 463 | adapter->rx_queue.queue_addr = NULL; |
| 464 | } |
| 465 | |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 466 | for(i = 0; i<IbmVethNumBufferPools; i++) |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 467 | if (adapter->rx_buff_pool[i].active) |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 468 | ibmveth_free_buffer_pool(adapter, |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 469 | &adapter->rx_buff_pool[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | } |
| 471 | |
Michael Ellerman | bbedefc | 2006-10-03 12:24:23 -0500 | [diff] [blame] | 472 | static int ibmveth_register_logical_lan(struct ibmveth_adapter *adapter, |
| 473 | union ibmveth_buf_desc rxq_desc, u64 mac_address) |
| 474 | { |
| 475 | int rc, try_again = 1; |
| 476 | |
| 477 | /* After a kexec the adapter will still be open, so our attempt to |
| 478 | * open it will fail. So if we get a failure we free the adapter and |
| 479 | * try again, but only once. */ |
| 480 | retry: |
| 481 | rc = h_register_logical_lan(adapter->vdev->unit_address, |
| 482 | adapter->buffer_list_dma, rxq_desc.desc, |
| 483 | adapter->filter_list_dma, mac_address); |
| 484 | |
| 485 | if (rc != H_SUCCESS && try_again) { |
| 486 | do { |
| 487 | rc = h_free_logical_lan(adapter->vdev->unit_address); |
| 488 | } while (H_IS_LONG_BUSY(rc) || (rc == H_BUSY)); |
| 489 | |
| 490 | try_again = 0; |
| 491 | goto retry; |
| 492 | } |
| 493 | |
| 494 | return rc; |
| 495 | } |
| 496 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | static int ibmveth_open(struct net_device *netdev) |
| 498 | { |
| 499 | struct ibmveth_adapter *adapter = netdev->priv; |
| 500 | u64 mac_address = 0; |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 501 | int rxq_entries = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | unsigned long lpar_rc; |
| 503 | int rc; |
| 504 | union ibmveth_buf_desc rxq_desc; |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 505 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | |
| 507 | ibmveth_debug_printk("open starting\n"); |
| 508 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 509 | napi_enable(&adapter->napi); |
| 510 | |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 511 | for(i = 0; i<IbmVethNumBufferPools; i++) |
| 512 | rxq_entries += adapter->rx_buff_pool[i].size; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 513 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | adapter->buffer_list_addr = (void*) get_zeroed_page(GFP_KERNEL); |
| 515 | adapter->filter_list_addr = (void*) get_zeroed_page(GFP_KERNEL); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 516 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | if(!adapter->buffer_list_addr || !adapter->filter_list_addr) { |
| 518 | ibmveth_error_printk("unable to allocate filter or buffer list pages\n"); |
| 519 | ibmveth_cleanup(adapter); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 520 | napi_disable(&adapter->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | return -ENOMEM; |
| 522 | } |
| 523 | |
| 524 | adapter->rx_queue.queue_len = sizeof(struct ibmveth_rx_q_entry) * rxq_entries; |
| 525 | adapter->rx_queue.queue_addr = kmalloc(adapter->rx_queue.queue_len, GFP_KERNEL); |
| 526 | |
| 527 | if(!adapter->rx_queue.queue_addr) { |
| 528 | ibmveth_error_printk("unable to allocate rx queue pages\n"); |
| 529 | ibmveth_cleanup(adapter); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 530 | napi_disable(&adapter->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | return -ENOMEM; |
| 532 | } |
| 533 | |
| 534 | adapter->buffer_list_dma = dma_map_single(&adapter->vdev->dev, |
| 535 | adapter->buffer_list_addr, 4096, DMA_BIDIRECTIONAL); |
| 536 | adapter->filter_list_dma = dma_map_single(&adapter->vdev->dev, |
| 537 | adapter->filter_list_addr, 4096, DMA_BIDIRECTIONAL); |
| 538 | adapter->rx_queue.queue_dma = dma_map_single(&adapter->vdev->dev, |
| 539 | adapter->rx_queue.queue_addr, |
| 540 | adapter->rx_queue.queue_len, DMA_BIDIRECTIONAL); |
| 541 | |
| 542 | if((dma_mapping_error(adapter->buffer_list_dma) ) || |
| 543 | (dma_mapping_error(adapter->filter_list_dma)) || |
| 544 | (dma_mapping_error(adapter->rx_queue.queue_dma))) { |
| 545 | ibmveth_error_printk("unable to map filter or buffer list pages\n"); |
| 546 | ibmveth_cleanup(adapter); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 547 | napi_disable(&adapter->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | return -ENOMEM; |
| 549 | } |
| 550 | |
| 551 | adapter->rx_queue.index = 0; |
| 552 | adapter->rx_queue.num_slots = rxq_entries; |
| 553 | adapter->rx_queue.toggle = 1; |
| 554 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | memcpy(&mac_address, netdev->dev_addr, netdev->addr_len); |
| 556 | mac_address = mac_address >> 16; |
| 557 | |
| 558 | rxq_desc.desc = 0; |
| 559 | rxq_desc.fields.valid = 1; |
| 560 | rxq_desc.fields.length = adapter->rx_queue.queue_len; |
| 561 | rxq_desc.fields.address = adapter->rx_queue.queue_dma; |
| 562 | |
| 563 | ibmveth_debug_printk("buffer list @ 0x%p\n", adapter->buffer_list_addr); |
| 564 | ibmveth_debug_printk("filter list @ 0x%p\n", adapter->filter_list_addr); |
| 565 | ibmveth_debug_printk("receive q @ 0x%p\n", adapter->rx_queue.queue_addr); |
| 566 | |
Santiago Leon | 4347ef1 | 2006-10-03 12:24:34 -0500 | [diff] [blame] | 567 | h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE); |
| 568 | |
Michael Ellerman | bbedefc | 2006-10-03 12:24:23 -0500 | [diff] [blame] | 569 | lpar_rc = ibmveth_register_logical_lan(adapter, rxq_desc, mac_address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 571 | if(lpar_rc != H_SUCCESS) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | ibmveth_error_printk("h_register_logical_lan failed with %ld\n", lpar_rc); |
Stephen Rothwell | 8168f90 | 2005-10-25 16:56:43 +1000 | [diff] [blame] | 573 | ibmveth_error_printk("buffer TCE:0x%lx filter TCE:0x%lx rxq desc:0x%lx MAC:0x%lx\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | adapter->buffer_list_dma, |
| 575 | adapter->filter_list_dma, |
| 576 | rxq_desc.desc, |
| 577 | mac_address); |
| 578 | ibmveth_cleanup(adapter); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 579 | napi_disable(&adapter->napi); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 580 | return -ENONET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | } |
| 582 | |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 583 | for(i = 0; i<IbmVethNumBufferPools; i++) { |
| 584 | if(!adapter->rx_buff_pool[i].active) |
| 585 | continue; |
| 586 | if (ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[i])) { |
| 587 | ibmveth_error_printk("unable to alloc pool\n"); |
| 588 | adapter->rx_buff_pool[i].active = 0; |
| 589 | ibmveth_cleanup(adapter); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 590 | napi_disable(&adapter->napi); |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 591 | return -ENOMEM ; |
| 592 | } |
| 593 | } |
| 594 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | ibmveth_debug_printk("registering irq 0x%x\n", netdev->irq); |
| 596 | if((rc = request_irq(netdev->irq, &ibmveth_interrupt, 0, netdev->name, netdev)) != 0) { |
| 597 | ibmveth_error_printk("unable to request irq 0x%x, rc %d\n", netdev->irq, rc); |
| 598 | do { |
| 599 | rc = h_free_logical_lan(adapter->vdev->unit_address); |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 600 | } while (H_IS_LONG_BUSY(rc) || (rc == H_BUSY)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | |
| 602 | ibmveth_cleanup(adapter); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 603 | napi_disable(&adapter->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | return rc; |
| 605 | } |
| 606 | |
Santiago Leon | e2adbcb | 2005-10-26 10:47:08 -0600 | [diff] [blame] | 607 | ibmveth_debug_printk("initial replenish cycle\n"); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 608 | ibmveth_interrupt(netdev->irq, netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | |
Santiago Leon | e2adbcb | 2005-10-26 10:47:08 -0600 | [diff] [blame] | 610 | netif_start_queue(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | |
| 612 | ibmveth_debug_printk("open complete\n"); |
| 613 | |
| 614 | return 0; |
| 615 | } |
| 616 | |
| 617 | static int ibmveth_close(struct net_device *netdev) |
| 618 | { |
| 619 | struct ibmveth_adapter *adapter = netdev->priv; |
| 620 | long lpar_rc; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 621 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | ibmveth_debug_printk("close starting\n"); |
| 623 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 624 | napi_disable(&adapter->napi); |
| 625 | |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 626 | if (!adapter->pool_config) |
| 627 | netif_stop_queue(netdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | |
| 629 | free_irq(netdev->irq, netdev); |
| 630 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | do { |
| 632 | lpar_rc = h_free_logical_lan(adapter->vdev->unit_address); |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 633 | } while (H_IS_LONG_BUSY(lpar_rc) || (lpar_rc == H_BUSY)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 635 | if(lpar_rc != H_SUCCESS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | { |
| 637 | ibmveth_error_printk("h_free_logical_lan failed with %lx, continuing with close\n", |
| 638 | lpar_rc); |
| 639 | } |
| 640 | |
| 641 | adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8); |
| 642 | |
| 643 | ibmveth_cleanup(adapter); |
| 644 | |
| 645 | ibmveth_debug_printk("close complete\n"); |
| 646 | |
| 647 | return 0; |
| 648 | } |
| 649 | |
| 650 | static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) { |
| 651 | cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE); |
| 652 | cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg | ADVERTISED_FIBRE); |
| 653 | cmd->speed = SPEED_1000; |
| 654 | cmd->duplex = DUPLEX_FULL; |
| 655 | cmd->port = PORT_FIBRE; |
| 656 | cmd->phy_address = 0; |
| 657 | cmd->transceiver = XCVR_INTERNAL; |
| 658 | cmd->autoneg = AUTONEG_ENABLE; |
| 659 | cmd->maxtxpkt = 0; |
| 660 | cmd->maxrxpkt = 1; |
| 661 | return 0; |
| 662 | } |
| 663 | |
| 664 | static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) { |
| 665 | strncpy(info->driver, ibmveth_driver_name, sizeof(info->driver) - 1); |
| 666 | strncpy(info->version, ibmveth_driver_version, sizeof(info->version) - 1); |
| 667 | } |
| 668 | |
| 669 | static u32 netdev_get_link(struct net_device *dev) { |
| 670 | return 1; |
| 671 | } |
| 672 | |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 673 | static void ibmveth_set_rx_csum_flags(struct net_device *dev, u32 data) |
| 674 | { |
| 675 | struct ibmveth_adapter *adapter = dev->priv; |
| 676 | |
| 677 | if (data) |
| 678 | adapter->rx_csum = 1; |
| 679 | else { |
| 680 | /* |
| 681 | * Since the ibmveth firmware interface does not have the concept of |
| 682 | * separate tx/rx checksum offload enable, if rx checksum is disabled |
| 683 | * we also have to disable tx checksum offload. Once we disable rx |
| 684 | * checksum offload, we are no longer allowed to send tx buffers that |
| 685 | * are not properly checksummed. |
| 686 | */ |
| 687 | adapter->rx_csum = 0; |
| 688 | dev->features &= ~NETIF_F_IP_CSUM; |
| 689 | } |
| 690 | } |
| 691 | |
| 692 | static void ibmveth_set_tx_csum_flags(struct net_device *dev, u32 data) |
| 693 | { |
| 694 | struct ibmveth_adapter *adapter = dev->priv; |
| 695 | |
| 696 | if (data) { |
| 697 | dev->features |= NETIF_F_IP_CSUM; |
| 698 | adapter->rx_csum = 1; |
| 699 | } else |
| 700 | dev->features &= ~NETIF_F_IP_CSUM; |
| 701 | } |
| 702 | |
| 703 | static int ibmveth_set_csum_offload(struct net_device *dev, u32 data, |
| 704 | void (*done) (struct net_device *, u32)) |
| 705 | { |
| 706 | struct ibmveth_adapter *adapter = dev->priv; |
| 707 | union ibmveth_illan_attributes set_attr, clr_attr, ret_attr; |
| 708 | long ret; |
| 709 | int rc1 = 0, rc2 = 0; |
| 710 | int restart = 0; |
| 711 | |
| 712 | if (netif_running(dev)) { |
| 713 | restart = 1; |
| 714 | adapter->pool_config = 1; |
| 715 | ibmveth_close(dev); |
| 716 | adapter->pool_config = 0; |
| 717 | } |
| 718 | |
| 719 | set_attr.desc = 0; |
| 720 | clr_attr.desc = 0; |
| 721 | |
| 722 | if (data) |
| 723 | set_attr.fields.tcp_csum_offload_ipv4 = 1; |
| 724 | else |
| 725 | clr_attr.fields.tcp_csum_offload_ipv4 = 1; |
| 726 | |
| 727 | ret = h_illan_attributes(adapter->vdev->unit_address, 0, 0, &ret_attr.desc); |
| 728 | |
| 729 | if (ret == H_SUCCESS && !ret_attr.fields.active_trunk && |
| 730 | !ret_attr.fields.trunk_priority && |
| 731 | ret_attr.fields.csum_offload_padded_pkt_support) { |
| 732 | ret = h_illan_attributes(adapter->vdev->unit_address, clr_attr.desc, |
| 733 | set_attr.desc, &ret_attr.desc); |
| 734 | |
| 735 | if (ret != H_SUCCESS) { |
| 736 | rc1 = -EIO; |
| 737 | ibmveth_error_printk("unable to change checksum offload settings." |
| 738 | " %d rc=%ld\n", data, ret); |
| 739 | |
| 740 | ret = h_illan_attributes(adapter->vdev->unit_address, |
| 741 | set_attr.desc, clr_attr.desc, &ret_attr.desc); |
| 742 | } else |
| 743 | done(dev, data); |
| 744 | } else { |
| 745 | rc1 = -EIO; |
| 746 | ibmveth_error_printk("unable to change checksum offload settings." |
| 747 | " %d rc=%ld ret_attr=%lx\n", data, ret, ret_attr.desc); |
| 748 | } |
| 749 | |
| 750 | if (restart) |
| 751 | rc2 = ibmveth_open(dev); |
| 752 | |
| 753 | return rc1 ? rc1 : rc2; |
| 754 | } |
| 755 | |
| 756 | static int ibmveth_set_rx_csum(struct net_device *dev, u32 data) |
| 757 | { |
| 758 | struct ibmveth_adapter *adapter = dev->priv; |
| 759 | |
| 760 | if ((data && adapter->rx_csum) || (!data && !adapter->rx_csum)) |
| 761 | return 0; |
| 762 | |
| 763 | return ibmveth_set_csum_offload(dev, data, ibmveth_set_rx_csum_flags); |
| 764 | } |
| 765 | |
| 766 | static int ibmveth_set_tx_csum(struct net_device *dev, u32 data) |
| 767 | { |
| 768 | struct ibmveth_adapter *adapter = dev->priv; |
| 769 | int rc = 0; |
| 770 | |
| 771 | if (data && (dev->features & NETIF_F_IP_CSUM)) |
| 772 | return 0; |
| 773 | if (!data && !(dev->features & NETIF_F_IP_CSUM)) |
| 774 | return 0; |
| 775 | |
| 776 | if (data && !adapter->rx_csum) |
| 777 | rc = ibmveth_set_csum_offload(dev, data, ibmveth_set_tx_csum_flags); |
| 778 | else |
| 779 | ibmveth_set_tx_csum_flags(dev, data); |
| 780 | |
| 781 | return rc; |
| 782 | } |
| 783 | |
| 784 | static u32 ibmveth_get_rx_csum(struct net_device *dev) |
| 785 | { |
| 786 | struct ibmveth_adapter *adapter = dev->priv; |
| 787 | return adapter->rx_csum; |
| 788 | } |
| 789 | |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 790 | static void ibmveth_get_strings(struct net_device *dev, u32 stringset, u8 *data) |
| 791 | { |
| 792 | int i; |
| 793 | |
| 794 | if (stringset != ETH_SS_STATS) |
| 795 | return; |
| 796 | |
| 797 | for (i = 0; i < ARRAY_SIZE(ibmveth_stats); i++, data += ETH_GSTRING_LEN) |
| 798 | memcpy(data, ibmveth_stats[i].name, ETH_GSTRING_LEN); |
| 799 | } |
| 800 | |
| 801 | static int ibmveth_get_stats_count(struct net_device *dev) |
| 802 | { |
| 803 | return ARRAY_SIZE(ibmveth_stats); |
| 804 | } |
| 805 | |
| 806 | static void ibmveth_get_ethtool_stats(struct net_device *dev, |
| 807 | struct ethtool_stats *stats, u64 *data) |
| 808 | { |
| 809 | int i; |
| 810 | struct ibmveth_adapter *adapter = dev->priv; |
| 811 | |
| 812 | for (i = 0; i < ARRAY_SIZE(ibmveth_stats); i++) |
| 813 | data[i] = IBMVETH_GET_STAT(adapter, ibmveth_stats[i].offset); |
| 814 | } |
| 815 | |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 816 | static const struct ethtool_ops netdev_ethtool_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | .get_drvinfo = netdev_get_drvinfo, |
| 818 | .get_settings = netdev_get_settings, |
| 819 | .get_link = netdev_get_link, |
| 820 | .get_sg = ethtool_op_get_sg, |
| 821 | .get_tx_csum = ethtool_op_get_tx_csum, |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 822 | .set_tx_csum = ibmveth_set_tx_csum, |
| 823 | .get_rx_csum = ibmveth_get_rx_csum, |
| 824 | .set_rx_csum = ibmveth_set_rx_csum, |
Brian King | 80e5367 | 2007-08-17 09:16:37 -0500 | [diff] [blame] | 825 | .get_tso = ethtool_op_get_tso, |
| 826 | .get_ufo = ethtool_op_get_ufo, |
Brian King | ddbb4de | 2007-08-17 09:16:43 -0500 | [diff] [blame] | 827 | .get_strings = ibmveth_get_strings, |
| 828 | .get_stats_count = ibmveth_get_stats_count, |
| 829 | .get_ethtool_stats = ibmveth_get_ethtool_stats, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | }; |
| 831 | |
| 832 | static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
| 833 | { |
| 834 | return -EOPNOTSUPP; |
| 835 | } |
| 836 | |
| 837 | #define page_offset(v) ((unsigned long)(v) & ((1 << 12) - 1)) |
| 838 | |
| 839 | static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *netdev) |
| 840 | { |
| 841 | struct ibmveth_adapter *adapter = netdev->priv; |
Brian King | 3449a2a | 2007-08-17 09:16:49 -0500 | [diff] [blame^] | 842 | union ibmveth_buf_desc desc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | unsigned long lpar_rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | unsigned long correlator; |
Santiago Leon | 60296d9 | 2005-10-26 10:47:16 -0600 | [diff] [blame] | 845 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | unsigned int retry_count; |
Santiago Leon | 60296d9 | 2005-10-26 10:47:16 -0600 | [diff] [blame] | 847 | unsigned int tx_dropped = 0; |
| 848 | unsigned int tx_bytes = 0; |
| 849 | unsigned int tx_packets = 0; |
| 850 | unsigned int tx_send_failed = 0; |
| 851 | unsigned int tx_map_failed = 0; |
| 852 | |
Brian King | 3449a2a | 2007-08-17 09:16:49 -0500 | [diff] [blame^] | 853 | desc.desc = 0; |
| 854 | desc.fields.length = skb->len; |
| 855 | desc.fields.address = dma_map_single(&adapter->vdev->dev, skb->data, |
| 856 | desc.fields.length, DMA_TO_DEVICE); |
| 857 | desc.fields.valid = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 859 | if (skb->ip_summed == CHECKSUM_PARTIAL && |
| 860 | ip_hdr(skb)->protocol != IPPROTO_TCP && skb_checksum_help(skb)) { |
| 861 | ibmveth_error_printk("tx: failed to checksum packet\n"); |
| 862 | tx_dropped++; |
| 863 | goto out; |
| 864 | } |
| 865 | |
| 866 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
| 867 | unsigned char *buf = skb_transport_header(skb) + skb->csum_offset; |
| 868 | |
Brian King | 3449a2a | 2007-08-17 09:16:49 -0500 | [diff] [blame^] | 869 | desc.fields.no_csum = 1; |
| 870 | desc.fields.csum_good = 1; |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 871 | |
| 872 | /* Need to zero out the checksum */ |
| 873 | buf[0] = 0; |
| 874 | buf[1] = 0; |
| 875 | } |
| 876 | |
Brian King | 3449a2a | 2007-08-17 09:16:49 -0500 | [diff] [blame^] | 877 | if (dma_mapping_error(desc.fields.address)) { |
| 878 | ibmveth_error_printk("tx: unable to map xmit buffer\n"); |
Santiago Leon | 60296d9 | 2005-10-26 10:47:16 -0600 | [diff] [blame] | 879 | tx_map_failed++; |
| 880 | tx_dropped++; |
| 881 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | } |
| 883 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 884 | /* send the frame. Arbitrarily set retrycount to 1024 */ |
| 885 | correlator = 0; |
| 886 | retry_count = 1024; |
| 887 | do { |
| 888 | lpar_rc = h_send_logical_lan(adapter->vdev->unit_address, |
Brian King | 3449a2a | 2007-08-17 09:16:49 -0500 | [diff] [blame^] | 889 | desc.desc, 0, 0, 0, 0, 0, |
| 890 | correlator, &correlator); |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 891 | } while ((lpar_rc == H_BUSY) && (retry_count--)); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 892 | |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 893 | if(lpar_rc != H_SUCCESS && lpar_rc != H_DROPPED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | ibmveth_error_printk("tx: h_send_logical_lan failed with rc=%ld\n", lpar_rc); |
Brian King | 3449a2a | 2007-08-17 09:16:49 -0500 | [diff] [blame^] | 895 | ibmveth_error_printk("tx: valid=%d, len=%d, address=0x%08x\n", |
| 896 | desc.fields.valid, desc.fields.length, desc.fields.address); |
Santiago Leon | 60296d9 | 2005-10-26 10:47:16 -0600 | [diff] [blame] | 897 | tx_send_failed++; |
| 898 | tx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | } else { |
Santiago Leon | 60296d9 | 2005-10-26 10:47:16 -0600 | [diff] [blame] | 900 | tx_packets++; |
| 901 | tx_bytes += skb->len; |
Santiago Leon | 0abe791 | 2005-10-26 10:46:53 -0600 | [diff] [blame] | 902 | netdev->trans_start = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 903 | } |
| 904 | |
Brian King | 3449a2a | 2007-08-17 09:16:49 -0500 | [diff] [blame^] | 905 | dma_unmap_single(&adapter->vdev->dev, desc.fields.address, |
| 906 | desc.fields.length, DMA_TO_DEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | |
Santiago Leon | 60296d9 | 2005-10-26 10:47:16 -0600 | [diff] [blame] | 908 | out: spin_lock_irqsave(&adapter->stats_lock, flags); |
| 909 | adapter->stats.tx_dropped += tx_dropped; |
| 910 | adapter->stats.tx_bytes += tx_bytes; |
| 911 | adapter->stats.tx_packets += tx_packets; |
| 912 | adapter->tx_send_failed += tx_send_failed; |
| 913 | adapter->tx_map_failed += tx_map_failed; |
| 914 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
| 915 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | dev_kfree_skb(skb); |
| 917 | return 0; |
| 918 | } |
| 919 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 920 | static int ibmveth_poll(struct napi_struct *napi, int budget) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 922 | struct ibmveth_adapter *adapter = container_of(napi, struct ibmveth_adapter, napi); |
| 923 | struct net_device *netdev = adapter->netdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | int frames_processed = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | unsigned long lpar_rc; |
| 926 | |
| 927 | restart_poll: |
| 928 | do { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 929 | struct sk_buff *skb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 931 | if (!ibmveth_rxq_pending_buffer(adapter)) |
| 932 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 934 | rmb(); |
| 935 | if (!ibmveth_rxq_buffer_valid(adapter)) { |
| 936 | wmb(); /* suggested by larson1 */ |
| 937 | adapter->rx_invalid_buffer++; |
| 938 | ibmveth_debug_printk("recycling invalid buffer\n"); |
| 939 | ibmveth_rxq_recycle_buffer(adapter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | } else { |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 941 | int length = ibmveth_rxq_frame_length(adapter); |
| 942 | int offset = ibmveth_rxq_frame_offset(adapter); |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 943 | int csum_good = ibmveth_rxq_csum_good(adapter); |
| 944 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 945 | skb = ibmveth_rxq_get_buffer(adapter); |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 946 | if (csum_good) |
| 947 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 948 | |
| 949 | ibmveth_rxq_harvest_buffer(adapter); |
| 950 | |
| 951 | skb_reserve(skb, offset); |
| 952 | skb_put(skb, length); |
| 953 | skb->protocol = eth_type_trans(skb, netdev); |
| 954 | |
| 955 | netif_receive_skb(skb); /* send it up */ |
| 956 | |
| 957 | adapter->stats.rx_packets++; |
| 958 | adapter->stats.rx_bytes += length; |
| 959 | frames_processed++; |
| 960 | netdev->last_rx = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | } |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 962 | } while (frames_processed < budget); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | |
Santiago Leon | e2adbcb | 2005-10-26 10:47:08 -0600 | [diff] [blame] | 964 | ibmveth_replenish_task(adapter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 966 | if (frames_processed < budget) { |
| 967 | /* We think we are done - reenable interrupts, |
| 968 | * then check once more to make sure we are done. |
| 969 | */ |
| 970 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, |
| 971 | VIO_IRQ_ENABLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 973 | ibmveth_assert(lpar_rc == H_SUCCESS); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 974 | |
| 975 | netif_rx_complete(netdev, napi); |
| 976 | |
| 977 | if (ibmveth_rxq_pending_buffer(adapter) && |
| 978 | netif_rx_reschedule(netdev, napi)) { |
| 979 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, |
| 980 | VIO_IRQ_DISABLE); |
| 981 | goto restart_poll; |
| 982 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | } |
| 984 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 985 | return frames_processed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | } |
| 987 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 988 | static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance) |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 989 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | struct net_device *netdev = dev_instance; |
| 991 | struct ibmveth_adapter *adapter = netdev->priv; |
| 992 | unsigned long lpar_rc; |
| 993 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 994 | if (netif_rx_schedule_prep(netdev, &adapter->napi)) { |
| 995 | lpar_rc = h_vio_signal(adapter->vdev->unit_address, |
| 996 | VIO_IRQ_DISABLE); |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 997 | ibmveth_assert(lpar_rc == H_SUCCESS); |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 998 | __netif_rx_schedule(netdev, &adapter->napi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 999 | } |
| 1000 | return IRQ_HANDLED; |
| 1001 | } |
| 1002 | |
| 1003 | static struct net_device_stats *ibmveth_get_stats(struct net_device *dev) |
| 1004 | { |
| 1005 | struct ibmveth_adapter *adapter = dev->priv; |
| 1006 | return &adapter->stats; |
| 1007 | } |
| 1008 | |
| 1009 | static void ibmveth_set_multicast_list(struct net_device *netdev) |
| 1010 | { |
| 1011 | struct ibmveth_adapter *adapter = netdev->priv; |
| 1012 | unsigned long lpar_rc; |
| 1013 | |
| 1014 | if((netdev->flags & IFF_PROMISC) || (netdev->mc_count > adapter->mcastFilterSize)) { |
| 1015 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, |
| 1016 | IbmVethMcastEnableRecv | |
| 1017 | IbmVethMcastDisableFiltering, |
| 1018 | 0); |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 1019 | if(lpar_rc != H_SUCCESS) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when entering promisc mode\n", lpar_rc); |
| 1021 | } |
| 1022 | } else { |
| 1023 | struct dev_mc_list *mclist = netdev->mc_list; |
| 1024 | int i; |
| 1025 | /* clear the filter table & disable filtering */ |
| 1026 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, |
| 1027 | IbmVethMcastEnableRecv | |
| 1028 | IbmVethMcastDisableFiltering | |
| 1029 | IbmVethMcastClearFilterTable, |
| 1030 | 0); |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 1031 | if(lpar_rc != H_SUCCESS) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when attempting to clear filter table\n", lpar_rc); |
| 1033 | } |
| 1034 | /* add the addresses to the filter table */ |
| 1035 | for(i = 0; i < netdev->mc_count; ++i, mclist = mclist->next) { |
| 1036 | // add the multicast address to the filter table |
| 1037 | unsigned long mcast_addr = 0; |
| 1038 | memcpy(((char *)&mcast_addr)+2, mclist->dmi_addr, 6); |
| 1039 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, |
| 1040 | IbmVethMcastAddFilter, |
| 1041 | mcast_addr); |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 1042 | if(lpar_rc != H_SUCCESS) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when adding an entry to the filter table\n", lpar_rc); |
| 1044 | } |
| 1045 | } |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1046 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1047 | /* re-enable filtering */ |
| 1048 | lpar_rc = h_multicast_ctrl(adapter->vdev->unit_address, |
| 1049 | IbmVethMcastEnableFiltering, |
| 1050 | 0); |
Segher Boessenkool | 706c8c9 | 2006-03-30 14:49:40 +0200 | [diff] [blame] | 1051 | if(lpar_rc != H_SUCCESS) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1052 | ibmveth_error_printk("h_multicast_ctrl rc=%ld when enabling filtering\n", lpar_rc); |
| 1053 | } |
| 1054 | } |
| 1055 | } |
| 1056 | |
| 1057 | static int ibmveth_change_mtu(struct net_device *dev, int new_mtu) |
| 1058 | { |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 1059 | struct ibmveth_adapter *adapter = dev->priv; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1060 | int new_mtu_oh = new_mtu + IBMVETH_BUFF_OH; |
Brian King | ce6eea5 | 2007-06-08 14:05:17 -0500 | [diff] [blame] | 1061 | int reinit = 0; |
| 1062 | int i, rc; |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 1063 | |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1064 | if (new_mtu < IBMVETH_MAX_MTU) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1065 | return -EINVAL; |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 1066 | |
Brian King | ce6eea5 | 2007-06-08 14:05:17 -0500 | [diff] [blame] | 1067 | for (i = 0; i < IbmVethNumBufferPools; i++) |
| 1068 | if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size) |
| 1069 | break; |
| 1070 | |
| 1071 | if (i == IbmVethNumBufferPools) |
| 1072 | return -EINVAL; |
| 1073 | |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1074 | /* Look for an active buffer pool that can hold the new MTU */ |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 1075 | for(i = 0; i<IbmVethNumBufferPools; i++) { |
Brian King | ce6eea5 | 2007-06-08 14:05:17 -0500 | [diff] [blame] | 1076 | if (!adapter->rx_buff_pool[i].active) { |
| 1077 | adapter->rx_buff_pool[i].active = 1; |
| 1078 | reinit = 1; |
| 1079 | } |
| 1080 | |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1081 | if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size) { |
Brian King | ce6eea5 | 2007-06-08 14:05:17 -0500 | [diff] [blame] | 1082 | if (reinit && netif_running(adapter->netdev)) { |
| 1083 | adapter->pool_config = 1; |
| 1084 | ibmveth_close(adapter->netdev); |
| 1085 | adapter->pool_config = 0; |
| 1086 | dev->mtu = new_mtu; |
| 1087 | if ((rc = ibmveth_open(adapter->netdev))) |
| 1088 | return rc; |
| 1089 | } else |
| 1090 | dev->mtu = new_mtu; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1091 | return 0; |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 1092 | } |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 1093 | } |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1094 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1095 | } |
| 1096 | |
Santiago Leon | 6b42237 | 2006-10-03 12:24:28 -0500 | [diff] [blame] | 1097 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1098 | static void ibmveth_poll_controller(struct net_device *dev) |
| 1099 | { |
| 1100 | ibmveth_replenish_task(dev->priv); |
Andrew Morton | 5f77113 | 2006-10-10 14:33:30 -0700 | [diff] [blame] | 1101 | ibmveth_interrupt(dev->irq, dev); |
Santiago Leon | 6b42237 | 2006-10-03 12:24:28 -0500 | [diff] [blame] | 1102 | } |
| 1103 | #endif |
| 1104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | static int __devinit ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id) |
| 1106 | { |
Santiago Leon | b6d3518 | 2005-10-26 10:47:01 -0600 | [diff] [blame] | 1107 | int rc, i; |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 1108 | long ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1109 | struct net_device *netdev; |
Mariusz Kozlowski | 9dc83af | 2007-08-06 23:44:03 +0200 | [diff] [blame] | 1110 | struct ibmveth_adapter *adapter; |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 1111 | union ibmveth_illan_attributes set_attr, ret_attr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | |
| 1113 | unsigned char *mac_addr_p; |
| 1114 | unsigned int *mcastFilterSize_p; |
| 1115 | |
| 1116 | |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1117 | ibmveth_debug_printk_no_adapter("entering ibmveth_probe for UA 0x%x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | dev->unit_address); |
| 1119 | |
Michael Ellerman | 493a684 | 2007-04-17 13:12:55 +1000 | [diff] [blame] | 1120 | mac_addr_p = (unsigned char *) vio_get_attribute(dev, |
| 1121 | VETH_MAC_ADDR, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1122 | if(!mac_addr_p) { |
| 1123 | printk(KERN_ERR "(%s:%3.3d) ERROR: Can't find VETH_MAC_ADDR " |
| 1124 | "attribute\n", __FILE__, __LINE__); |
| 1125 | return 0; |
| 1126 | } |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1127 | |
Michael Ellerman | 493a684 | 2007-04-17 13:12:55 +1000 | [diff] [blame] | 1128 | mcastFilterSize_p = (unsigned int *) vio_get_attribute(dev, |
| 1129 | VETH_MCAST_FILTER_SIZE, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1130 | if(!mcastFilterSize_p) { |
| 1131 | printk(KERN_ERR "(%s:%3.3d) ERROR: Can't find " |
| 1132 | "VETH_MCAST_FILTER_SIZE attribute\n", |
| 1133 | __FILE__, __LINE__); |
| 1134 | return 0; |
| 1135 | } |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1136 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | netdev = alloc_etherdev(sizeof(struct ibmveth_adapter)); |
| 1138 | |
| 1139 | if(!netdev) |
| 1140 | return -ENOMEM; |
| 1141 | |
| 1142 | SET_MODULE_OWNER(netdev); |
| 1143 | |
| 1144 | adapter = netdev->priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | dev->dev.driver_data = netdev; |
| 1146 | |
| 1147 | adapter->vdev = dev; |
| 1148 | adapter->netdev = netdev; |
| 1149 | adapter->mcastFilterSize= *mcastFilterSize_p; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1150 | adapter->pool_config = 0; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1151 | |
Stephen Hemminger | bea3348 | 2007-10-03 16:41:36 -0700 | [diff] [blame] | 1152 | netif_napi_add(netdev, &adapter->napi, ibmveth_poll, 16); |
| 1153 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | /* Some older boxes running PHYP non-natively have an OF that |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1155 | returns a 8-byte local-mac-address field (and the first |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1156 | 2 bytes have to be ignored) while newer boxes' OF return |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1157 | a 6-byte field. Note that IEEE 1275 specifies that |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1158 | local-mac-address must be a 6-byte field. |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1159 | The RPA doc specifies that the first byte must be 10b, so |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | we'll just look for it to solve this 8 vs. 6 byte field issue */ |
| 1161 | |
| 1162 | if ((*mac_addr_p & 0x3) != 0x02) |
| 1163 | mac_addr_p += 2; |
| 1164 | |
| 1165 | adapter->mac_addr = 0; |
| 1166 | memcpy(&adapter->mac_addr, mac_addr_p, 6); |
| 1167 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | netdev->irq = dev->irq; |
| 1169 | netdev->open = ibmveth_open; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | netdev->stop = ibmveth_close; |
| 1171 | netdev->hard_start_xmit = ibmveth_start_xmit; |
| 1172 | netdev->get_stats = ibmveth_get_stats; |
| 1173 | netdev->set_multicast_list = ibmveth_set_multicast_list; |
| 1174 | netdev->do_ioctl = ibmveth_ioctl; |
| 1175 | netdev->ethtool_ops = &netdev_ethtool_ops; |
| 1176 | netdev->change_mtu = ibmveth_change_mtu; |
| 1177 | SET_NETDEV_DEV(netdev, &dev->dev); |
Santiago Leon | 6b42237 | 2006-10-03 12:24:28 -0500 | [diff] [blame] | 1178 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1179 | netdev->poll_controller = ibmveth_poll_controller; |
| 1180 | #endif |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1181 | netdev->features |= NETIF_F_LLTX; |
Santiago Leon | 60296d9 | 2005-10-26 10:47:16 -0600 | [diff] [blame] | 1182 | spin_lock_init(&adapter->stats_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | |
| 1184 | memcpy(&netdev->dev_addr, &adapter->mac_addr, netdev->addr_len); |
| 1185 | |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1186 | for(i = 0; i<IbmVethNumBufferPools; i++) { |
| 1187 | struct kobject *kobj = &adapter->rx_buff_pool[i].kobj; |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1188 | ibmveth_init_buffer_pool(&adapter->rx_buff_pool[i], i, |
| 1189 | pool_count[i], pool_size[i], |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1190 | pool_active[i]); |
| 1191 | kobj->parent = &dev->dev.kobj; |
| 1192 | sprintf(kobj->name, "pool%d", i); |
| 1193 | kobj->ktype = &ktype_veth_pool; |
| 1194 | kobject_register(kobj); |
| 1195 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | |
| 1197 | ibmveth_debug_printk("adapter @ 0x%p\n", adapter); |
| 1198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | adapter->buffer_list_dma = DMA_ERROR_CODE; |
| 1200 | adapter->filter_list_dma = DMA_ERROR_CODE; |
| 1201 | adapter->rx_queue.queue_dma = DMA_ERROR_CODE; |
| 1202 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | ibmveth_debug_printk("registering netdev...\n"); |
| 1204 | |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 1205 | ret = h_illan_attributes(dev->unit_address, 0, 0, &ret_attr.desc); |
| 1206 | |
| 1207 | if (ret == H_SUCCESS && !ret_attr.fields.active_trunk && |
| 1208 | !ret_attr.fields.trunk_priority && |
| 1209 | ret_attr.fields.csum_offload_padded_pkt_support) { |
| 1210 | set_attr.desc = 0; |
| 1211 | set_attr.fields.tcp_csum_offload_ipv4 = 1; |
| 1212 | |
| 1213 | ret = h_illan_attributes(dev->unit_address, 0, set_attr.desc, |
| 1214 | &ret_attr.desc); |
| 1215 | |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 1216 | if (ret == H_SUCCESS) { |
| 1217 | adapter->rx_csum = 1; |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 1218 | netdev->features |= NETIF_F_IP_CSUM; |
Brian King | 5fc7e01 | 2007-08-17 09:16:31 -0500 | [diff] [blame] | 1219 | } else |
Brian King | f4ff287 | 2007-09-15 13:36:07 -0700 | [diff] [blame] | 1220 | ret = h_illan_attributes(dev->unit_address, set_attr.desc, |
| 1221 | 0, &ret_attr.desc); |
| 1222 | } |
| 1223 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | rc = register_netdev(netdev); |
| 1225 | |
| 1226 | if(rc) { |
| 1227 | ibmveth_debug_printk("failed to register netdev rc=%d\n", rc); |
| 1228 | free_netdev(netdev); |
| 1229 | return rc; |
| 1230 | } |
| 1231 | |
| 1232 | ibmveth_debug_printk("registered\n"); |
| 1233 | |
| 1234 | ibmveth_proc_register_adapter(adapter); |
| 1235 | |
| 1236 | return 0; |
| 1237 | } |
| 1238 | |
| 1239 | static int __devexit ibmveth_remove(struct vio_dev *dev) |
| 1240 | { |
| 1241 | struct net_device *netdev = dev->dev.driver_data; |
| 1242 | struct ibmveth_adapter *adapter = netdev->priv; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1243 | int i; |
| 1244 | |
| 1245 | for(i = 0; i<IbmVethNumBufferPools; i++) |
| 1246 | kobject_unregister(&adapter->rx_buff_pool[i].kobj); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | |
| 1248 | unregister_netdev(netdev); |
| 1249 | |
| 1250 | ibmveth_proc_unregister_adapter(adapter); |
| 1251 | |
| 1252 | free_netdev(netdev); |
| 1253 | return 0; |
| 1254 | } |
| 1255 | |
| 1256 | #ifdef CONFIG_PROC_FS |
| 1257 | static void ibmveth_proc_register_driver(void) |
| 1258 | { |
Eric W. Biederman | 457c4cb | 2007-09-12 12:01:34 +0200 | [diff] [blame] | 1259 | ibmveth_proc_dir = proc_mkdir(IBMVETH_PROC_DIR, init_net.proc_net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | if (ibmveth_proc_dir) { |
| 1261 | SET_MODULE_OWNER(ibmveth_proc_dir); |
| 1262 | } |
| 1263 | } |
| 1264 | |
| 1265 | static void ibmveth_proc_unregister_driver(void) |
| 1266 | { |
Eric W. Biederman | 457c4cb | 2007-09-12 12:01:34 +0200 | [diff] [blame] | 1267 | remove_proc_entry(IBMVETH_PROC_DIR, init_net.proc_net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1268 | } |
| 1269 | |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1270 | static void *ibmveth_seq_start(struct seq_file *seq, loff_t *pos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1271 | { |
| 1272 | if (*pos == 0) { |
| 1273 | return (void *)1; |
| 1274 | } else { |
| 1275 | return NULL; |
| 1276 | } |
| 1277 | } |
| 1278 | |
| 1279 | static void *ibmveth_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
| 1280 | { |
| 1281 | ++*pos; |
| 1282 | return NULL; |
| 1283 | } |
| 1284 | |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1285 | static void ibmveth_seq_stop(struct seq_file *seq, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1286 | { |
| 1287 | } |
| 1288 | |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1289 | static int ibmveth_seq_show(struct seq_file *seq, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1290 | { |
| 1291 | struct ibmveth_adapter *adapter = seq->private; |
| 1292 | char *current_mac = ((char*) &adapter->netdev->dev_addr); |
| 1293 | char *firmware_mac = ((char*) &adapter->mac_addr) ; |
| 1294 | |
| 1295 | seq_printf(seq, "%s %s\n\n", ibmveth_driver_string, ibmveth_driver_version); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1296 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1297 | seq_printf(seq, "Unit Address: 0x%x\n", adapter->vdev->unit_address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | seq_printf(seq, "Current MAC: %02X:%02X:%02X:%02X:%02X:%02X\n", |
| 1299 | current_mac[0], current_mac[1], current_mac[2], |
| 1300 | current_mac[3], current_mac[4], current_mac[5]); |
| 1301 | seq_printf(seq, "Firmware MAC: %02X:%02X:%02X:%02X:%02X:%02X\n", |
| 1302 | firmware_mac[0], firmware_mac[1], firmware_mac[2], |
| 1303 | firmware_mac[3], firmware_mac[4], firmware_mac[5]); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1304 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1305 | seq_printf(seq, "\nAdapter Statistics:\n"); |
Brian King | 3449a2a | 2007-08-17 09:16:49 -0500 | [diff] [blame^] | 1306 | seq_printf(seq, " TX: vio_map_single failres: %ld\n", adapter->tx_map_failed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | seq_printf(seq, " send failures: %ld\n", adapter->tx_send_failed); |
| 1308 | seq_printf(seq, " RX: replenish task cycles: %ld\n", adapter->replenish_task_cycles); |
| 1309 | seq_printf(seq, " alloc_skb_failures: %ld\n", adapter->replenish_no_mem); |
| 1310 | seq_printf(seq, " add buffer failures: %ld\n", adapter->replenish_add_buff_failure); |
| 1311 | seq_printf(seq, " invalid buffers: %ld\n", adapter->rx_invalid_buffer); |
| 1312 | seq_printf(seq, " no buffers: %ld\n", adapter->rx_no_buffer); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1313 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | return 0; |
| 1315 | } |
| 1316 | static struct seq_operations ibmveth_seq_ops = { |
| 1317 | .start = ibmveth_seq_start, |
| 1318 | .next = ibmveth_seq_next, |
| 1319 | .stop = ibmveth_seq_stop, |
| 1320 | .show = ibmveth_seq_show, |
| 1321 | }; |
| 1322 | |
| 1323 | static int ibmveth_proc_open(struct inode *inode, struct file *file) |
| 1324 | { |
| 1325 | struct seq_file *seq; |
| 1326 | struct proc_dir_entry *proc; |
| 1327 | int rc; |
| 1328 | |
| 1329 | rc = seq_open(file, &ibmveth_seq_ops); |
| 1330 | if (!rc) { |
| 1331 | /* recover the pointer buried in proc_dir_entry data */ |
| 1332 | seq = file->private_data; |
| 1333 | proc = PDE(inode); |
| 1334 | seq->private = proc->data; |
| 1335 | } |
| 1336 | return rc; |
| 1337 | } |
| 1338 | |
Arjan van de Ven | d54b1fd | 2007-02-12 00:55:34 -0800 | [diff] [blame] | 1339 | static const struct file_operations ibmveth_proc_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1340 | .owner = THIS_MODULE, |
| 1341 | .open = ibmveth_proc_open, |
| 1342 | .read = seq_read, |
| 1343 | .llseek = seq_lseek, |
| 1344 | .release = seq_release, |
| 1345 | }; |
| 1346 | |
| 1347 | static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter) |
| 1348 | { |
| 1349 | struct proc_dir_entry *entry; |
| 1350 | if (ibmveth_proc_dir) { |
Santiago Leon | 03a85d0 | 2006-10-03 12:24:39 -0500 | [diff] [blame] | 1351 | char u_addr[10]; |
| 1352 | sprintf(u_addr, "%x", adapter->vdev->unit_address); |
| 1353 | entry = create_proc_entry(u_addr, S_IFREG, ibmveth_proc_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1354 | if (!entry) { |
| 1355 | ibmveth_error_printk("Cannot create adapter proc entry"); |
| 1356 | } else { |
| 1357 | entry->data = (void *) adapter; |
| 1358 | entry->proc_fops = &ibmveth_proc_fops; |
| 1359 | SET_MODULE_OWNER(entry); |
| 1360 | } |
| 1361 | } |
| 1362 | return; |
| 1363 | } |
| 1364 | |
| 1365 | static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter) |
| 1366 | { |
| 1367 | if (ibmveth_proc_dir) { |
Santiago Leon | 03a85d0 | 2006-10-03 12:24:39 -0500 | [diff] [blame] | 1368 | char u_addr[10]; |
| 1369 | sprintf(u_addr, "%x", adapter->vdev->unit_address); |
| 1370 | remove_proc_entry(u_addr, ibmveth_proc_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | } |
| 1372 | } |
| 1373 | |
| 1374 | #else /* CONFIG_PROC_FS */ |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1375 | static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1376 | { |
| 1377 | } |
| 1378 | |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1379 | static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1380 | { |
| 1381 | } |
| 1382 | static void ibmveth_proc_register_driver(void) |
| 1383 | { |
| 1384 | } |
| 1385 | |
| 1386 | static void ibmveth_proc_unregister_driver(void) |
| 1387 | { |
| 1388 | } |
| 1389 | #endif /* CONFIG_PROC_FS */ |
| 1390 | |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1391 | static struct attribute veth_active_attr; |
| 1392 | static struct attribute veth_num_attr; |
| 1393 | static struct attribute veth_size_attr; |
| 1394 | |
| 1395 | static ssize_t veth_pool_show(struct kobject * kobj, |
| 1396 | struct attribute * attr, char * buf) |
| 1397 | { |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1398 | struct ibmveth_buff_pool *pool = container_of(kobj, |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1399 | struct ibmveth_buff_pool, |
| 1400 | kobj); |
| 1401 | |
| 1402 | if (attr == &veth_active_attr) |
| 1403 | return sprintf(buf, "%d\n", pool->active); |
| 1404 | else if (attr == &veth_num_attr) |
| 1405 | return sprintf(buf, "%d\n", pool->size); |
| 1406 | else if (attr == &veth_size_attr) |
| 1407 | return sprintf(buf, "%d\n", pool->buff_size); |
| 1408 | return 0; |
| 1409 | } |
| 1410 | |
| 1411 | static ssize_t veth_pool_store(struct kobject * kobj, struct attribute * attr, |
| 1412 | const char * buf, size_t count) |
| 1413 | { |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1414 | struct ibmveth_buff_pool *pool = container_of(kobj, |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1415 | struct ibmveth_buff_pool, |
| 1416 | kobj); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1417 | struct net_device *netdev = |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1418 | container_of(kobj->parent, struct device, kobj)->driver_data; |
| 1419 | struct ibmveth_adapter *adapter = netdev->priv; |
| 1420 | long value = simple_strtol(buf, NULL, 10); |
| 1421 | long rc; |
| 1422 | |
| 1423 | if (attr == &veth_active_attr) { |
| 1424 | if (value && !pool->active) { |
Brian King | 4aa9c93 | 2007-06-08 14:05:16 -0500 | [diff] [blame] | 1425 | if (netif_running(netdev)) { |
| 1426 | if(ibmveth_alloc_buffer_pool(pool)) { |
| 1427 | ibmveth_error_printk("unable to alloc pool\n"); |
| 1428 | return -ENOMEM; |
| 1429 | } |
| 1430 | pool->active = 1; |
| 1431 | adapter->pool_config = 1; |
| 1432 | ibmveth_close(netdev); |
| 1433 | adapter->pool_config = 0; |
| 1434 | if ((rc = ibmveth_open(netdev))) |
| 1435 | return rc; |
| 1436 | } else |
| 1437 | pool->active = 1; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1438 | } else if (!value && pool->active) { |
| 1439 | int mtu = netdev->mtu + IBMVETH_BUFF_OH; |
| 1440 | int i; |
| 1441 | /* Make sure there is a buffer pool with buffers that |
| 1442 | can hold a packet of the size of the MTU */ |
Brian King | 76b9cfc | 2007-08-03 13:55:19 +1000 | [diff] [blame] | 1443 | for (i = 0; i < IbmVethNumBufferPools; i++) { |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1444 | if (pool == &adapter->rx_buff_pool[i]) |
| 1445 | continue; |
| 1446 | if (!adapter->rx_buff_pool[i].active) |
| 1447 | continue; |
Brian King | 76b9cfc | 2007-08-03 13:55:19 +1000 | [diff] [blame] | 1448 | if (mtu <= adapter->rx_buff_pool[i].buff_size) |
| 1449 | break; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1450 | } |
Brian King | 76b9cfc | 2007-08-03 13:55:19 +1000 | [diff] [blame] | 1451 | |
| 1452 | if (i == IbmVethNumBufferPools) { |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1453 | ibmveth_error_printk("no active pool >= MTU\n"); |
| 1454 | return -EPERM; |
| 1455 | } |
Brian King | 76b9cfc | 2007-08-03 13:55:19 +1000 | [diff] [blame] | 1456 | |
| 1457 | pool->active = 0; |
| 1458 | if (netif_running(netdev)) { |
| 1459 | adapter->pool_config = 1; |
| 1460 | ibmveth_close(netdev); |
| 1461 | adapter->pool_config = 0; |
| 1462 | if ((rc = ibmveth_open(netdev))) |
| 1463 | return rc; |
| 1464 | } |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1465 | } |
| 1466 | } else if (attr == &veth_num_attr) { |
| 1467 | if (value <= 0 || value > IBMVETH_MAX_POOL_COUNT) |
| 1468 | return -EINVAL; |
| 1469 | else { |
Brian King | 4aa9c93 | 2007-06-08 14:05:16 -0500 | [diff] [blame] | 1470 | if (netif_running(netdev)) { |
| 1471 | adapter->pool_config = 1; |
| 1472 | ibmveth_close(netdev); |
| 1473 | adapter->pool_config = 0; |
| 1474 | pool->size = value; |
| 1475 | if ((rc = ibmveth_open(netdev))) |
| 1476 | return rc; |
| 1477 | } else |
| 1478 | pool->size = value; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1479 | } |
| 1480 | } else if (attr == &veth_size_attr) { |
| 1481 | if (value <= IBMVETH_BUFF_OH || value > IBMVETH_MAX_BUF_SIZE) |
| 1482 | return -EINVAL; |
| 1483 | else { |
Brian King | 4aa9c93 | 2007-06-08 14:05:16 -0500 | [diff] [blame] | 1484 | if (netif_running(netdev)) { |
| 1485 | adapter->pool_config = 1; |
| 1486 | ibmveth_close(netdev); |
| 1487 | adapter->pool_config = 0; |
| 1488 | pool->buff_size = value; |
| 1489 | if ((rc = ibmveth_open(netdev))) |
| 1490 | return rc; |
| 1491 | } else |
| 1492 | pool->buff_size = value; |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1493 | } |
| 1494 | } |
| 1495 | |
| 1496 | /* kick the interrupt handler to allocate/deallocate pools */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1497 | ibmveth_interrupt(netdev->irq, netdev); |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1498 | return count; |
| 1499 | } |
| 1500 | |
| 1501 | |
| 1502 | #define ATTR(_name, _mode) \ |
| 1503 | struct attribute veth_##_name##_attr = { \ |
Tejun Heo | 7b59575 | 2007-06-14 03:45:17 +0900 | [diff] [blame] | 1504 | .name = __stringify(_name), .mode = _mode, \ |
Santiago Leon | 860f242 | 2006-04-25 11:19:59 -0500 | [diff] [blame] | 1505 | }; |
| 1506 | |
| 1507 | static ATTR(active, 0644); |
| 1508 | static ATTR(num, 0644); |
| 1509 | static ATTR(size, 0644); |
| 1510 | |
| 1511 | static struct attribute * veth_pool_attrs[] = { |
| 1512 | &veth_active_attr, |
| 1513 | &veth_num_attr, |
| 1514 | &veth_size_attr, |
| 1515 | NULL, |
| 1516 | }; |
| 1517 | |
| 1518 | static struct sysfs_ops veth_pool_ops = { |
| 1519 | .show = veth_pool_show, |
| 1520 | .store = veth_pool_store, |
| 1521 | }; |
| 1522 | |
| 1523 | static struct kobj_type ktype_veth_pool = { |
| 1524 | .release = NULL, |
| 1525 | .sysfs_ops = &veth_pool_ops, |
| 1526 | .default_attrs = veth_pool_attrs, |
| 1527 | }; |
| 1528 | |
| 1529 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1530 | static struct vio_device_id ibmveth_device_table[] __devinitdata= { |
| 1531 | { "network", "IBM,l-lan"}, |
Stephen Rothwell | fb120da | 2005-08-17 16:42:59 +1000 | [diff] [blame] | 1532 | { "", "" } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1533 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | MODULE_DEVICE_TABLE(vio, ibmveth_device_table); |
| 1535 | |
| 1536 | static struct vio_driver ibmveth_driver = { |
Stephen Rothwell | 6fdf539 | 2005-10-24 14:53:21 +1000 | [diff] [blame] | 1537 | .id_table = ibmveth_device_table, |
| 1538 | .probe = ibmveth_probe, |
| 1539 | .remove = ibmveth_remove, |
| 1540 | .driver = { |
| 1541 | .name = ibmveth_driver_name, |
Stephen Rothwell | 915124d | 2005-10-24 15:12:22 +1000 | [diff] [blame] | 1542 | .owner = THIS_MODULE, |
Stephen Rothwell | 6fdf539 | 2005-10-24 14:53:21 +1000 | [diff] [blame] | 1543 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1544 | }; |
| 1545 | |
| 1546 | static int __init ibmveth_module_init(void) |
| 1547 | { |
| 1548 | ibmveth_printk("%s: %s %s\n", ibmveth_driver_name, ibmveth_driver_string, ibmveth_driver_version); |
| 1549 | |
| 1550 | ibmveth_proc_register_driver(); |
| 1551 | |
| 1552 | return vio_register_driver(&ibmveth_driver); |
| 1553 | } |
| 1554 | |
| 1555 | static void __exit ibmveth_module_exit(void) |
| 1556 | { |
| 1557 | vio_unregister_driver(&ibmveth_driver); |
| 1558 | ibmveth_proc_unregister_driver(); |
Jeff Garzik | d7fbeba | 2006-05-24 01:31:14 -0400 | [diff] [blame] | 1559 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | |
| 1561 | module_init(ibmveth_module_init); |
| 1562 | module_exit(ibmveth_module_exit); |