1 /*******************************************************************************
3 * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver
4 * Copyright(c) 2013 - 2016 Intel Corporation.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License along
16 * with this program. If not, see <http://www.gnu.org/licenses/>.
18 * The full GNU General Public License is included in this distribution in
19 * the file called "COPYING".
21 * Contact Information:
22 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 ******************************************************************************/
30 #include <linux/module.h>
31 #include <linux/pci.h>
32 #include <linux/aer.h>
33 #include <linux/netdevice.h>
34 #include <linux/vmalloc.h>
35 #include <linux/interrupt.h>
36 #include <linux/ethtool.h>
37 #include <linux/if_vlan.h>
39 #include <linux/tcp.h>
40 #include <linux/sctp.h>
41 #include <linux/ipv6.h>
42 #include <linux/kernel.h>
43 #include <linux/bitops.h>
44 #include <linux/timer.h>
45 #include <linux/workqueue.h>
46 #include <linux/wait.h>
47 #include <linux/delay.h>
48 #include <linux/gfp.h>
49 #include <linux/skbuff.h>
50 #include <linux/dma-mapping.h>
51 #include <linux/etherdevice.h>
52 #include <linux/socket.h>
53 #include <linux/jiffies.h>
54 #include <net/ip6_checksum.h>
57 #include "i40e_type.h"
58 #include <linux/avf/virtchnl.h>
59 #include "i40e_txrx.h"
61 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
62 #define PFX "i40evf: "
64 /* VSI state flags shared with common code */
65 enum i40evf_vsi_state_t {
67 /* This must be last as it determines the size of the BITMAP */
68 __I40E_VSI_STATE_SIZE__,
71 /* dummy struct to make common code less painful */
73 struct i40evf_adapter *back;
74 struct net_device *netdev;
75 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
78 DECLARE_BITMAP(state, __I40E_VSI_STATE_SIZE__);
82 void *priv; /* client driver data reference. */
85 /* How many Rx Buffers do we bundle into one write to the hardware ? */
86 #define I40EVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */
87 #define I40EVF_DEFAULT_TXD 512
88 #define I40EVF_DEFAULT_RXD 512
89 #define I40EVF_MAX_TXD 4096
90 #define I40EVF_MIN_TXD 64
91 #define I40EVF_MAX_RXD 4096
92 #define I40EVF_MIN_RXD 64
93 #define I40EVF_REQ_DESCRIPTOR_MULTIPLE 32
94 #define I40EVF_MAX_AQ_BUF_SIZE 4096
95 #define I40EVF_AQ_LEN 32
96 #define I40EVF_AQ_MAX_ERR 20 /* times to try before resetting AQ */
98 #define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
100 #define I40E_RX_DESC(R, i) (&(((union i40e_32byte_rx_desc *)((R)->desc))[i]))
101 #define I40E_TX_DESC(R, i) (&(((struct i40e_tx_desc *)((R)->desc))[i]))
102 #define I40E_TX_CTXTDESC(R, i) \
103 (&(((struct i40e_tx_context_desc *)((R)->desc))[i]))
104 #define MAX_QUEUES 16
106 #define I40EVF_HKEY_ARRAY_SIZE ((I40E_VFQF_HKEY_MAX_INDEX + 1) * 4)
107 #define I40EVF_HLUT_ARRAY_SIZE ((I40E_VFQF_HLUT_MAX_INDEX + 1) * 4)
109 /* MAX_MSIX_Q_VECTORS of these are allocated,
110 * but we only use one per queue-specific vector.
112 struct i40e_q_vector {
113 struct i40evf_adapter *adapter;
114 struct i40e_vsi *vsi;
115 struct napi_struct napi;
116 unsigned long reg_idx;
117 struct i40e_ring_container rx;
118 struct i40e_ring_container tx;
120 u8 num_ringpairs; /* total number of ring pairs in vector */
121 #define ITR_COUNTDOWN_START 100
122 u8 itr_countdown; /* when 0 or 1 update ITR */
123 int v_idx; /* vector index in list */
124 char name[IFNAMSIZ + 15];
126 cpumask_t affinity_mask;
127 struct irq_affinity_notify affinity_notify;
130 /* Helper macros to switch between ints/sec and what the register uses.
131 * And yes, it's the same math going both ways. The lowest value
132 * supported by all of the i40e hardware is 8.
134 #define EITR_INTS_PER_SEC_TO_REG(_eitr) \
135 ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8)
136 #define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG
138 #define I40EVF_DESC_UNUSED(R) \
139 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
140 (R)->next_to_clean - (R)->next_to_use - 1)
142 #define I40EVF_RX_DESC_ADV(R, i) \
143 (&(((union i40e_adv_rx_desc *)((R).desc))[i]))
144 #define I40EVF_TX_DESC_ADV(R, i) \
145 (&(((union i40e_adv_tx_desc *)((R).desc))[i]))
146 #define I40EVF_TX_CTXTDESC_ADV(R, i) \
147 (&(((struct i40e_adv_tx_context_desc *)((R).desc))[i]))
149 #define OTHER_VECTOR 1
150 #define NONQ_VECS (OTHER_VECTOR)
152 #define MIN_MSIX_Q_VECTORS 1
153 #define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NONQ_VECS)
155 #define I40EVF_QUEUE_END_OF_LIST 0x7FF
156 #define I40EVF_FREE_VECTOR 0x7FFF
157 struct i40evf_mac_filter {
158 struct list_head list;
159 u8 macaddr[ETH_ALEN];
160 bool remove; /* filter needs to be removed */
161 bool add; /* filter needs to be added */
164 struct i40evf_vlan_filter {
165 struct list_head list;
167 bool remove; /* filter needs to be removed */
168 bool add; /* filter needs to be added */
171 /* Driver state. The order of these is important! */
172 enum i40evf_state_t {
173 __I40EVF_STARTUP, /* driver loaded, probe complete */
174 __I40EVF_REMOVE, /* driver is being unloaded */
175 __I40EVF_INIT_VERSION_CHECK, /* aq msg sent, awaiting reply */
176 __I40EVF_INIT_GET_RESOURCES, /* aq msg sent, awaiting reply */
177 __I40EVF_INIT_SW, /* got resources, setting up structs */
178 __I40EVF_RESETTING, /* in reset */
179 /* Below here, watchdog is running */
180 __I40EVF_DOWN, /* ready, can be opened */
181 __I40EVF_DOWN_PENDING, /* descending, waiting for watchdog */
182 __I40EVF_TESTING, /* in ethtool self-test */
183 __I40EVF_RUNNING, /* opened, working */
186 enum i40evf_critical_section_t {
187 __I40EVF_IN_CRITICAL_TASK, /* cannot be interrupted */
188 __I40EVF_IN_CLIENT_TASK,
189 __I40EVF_IN_REMOVE_TASK, /* device being removed */
192 /* board specific private data structure */
193 struct i40evf_adapter {
194 struct timer_list watchdog_timer;
195 struct work_struct reset_task;
196 struct work_struct adminq_task;
197 struct delayed_work client_task;
198 struct delayed_work init_task;
199 wait_queue_head_t down_waitqueue;
200 struct i40e_q_vector *q_vectors;
201 struct list_head vlan_filter_list;
202 char misc_vector_name[IFNAMSIZ + 9];
203 int num_active_queues;
206 struct i40e_ring *tx_rings;
207 u32 tx_timeout_count;
208 struct list_head mac_filter_list;
212 struct i40e_ring *rx_rings;
213 u64 hw_csum_rx_error;
215 int num_msix_vectors;
217 int iwarp_base_vector;
219 struct i40e_client_instance *cinst;
220 struct msix_entry *msix_entries;
223 #define I40EVF_FLAG_RX_CSUM_ENABLED BIT(0)
224 #define I40EVF_FLAG_IMIR_ENABLED BIT(5)
225 #define I40EVF_FLAG_MQ_CAPABLE BIT(6)
226 #define I40EVF_FLAG_PF_COMMS_FAILED BIT(8)
227 #define I40EVF_FLAG_RESET_PENDING BIT(9)
228 #define I40EVF_FLAG_RESET_NEEDED BIT(10)
229 #define I40EVF_FLAG_WB_ON_ITR_CAPABLE BIT(11)
230 #define I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE BIT(12)
231 #define I40EVF_FLAG_ADDR_SET_BY_PF BIT(13)
232 #define I40EVF_FLAG_SERVICE_CLIENT_REQUESTED BIT(14)
233 #define I40EVF_FLAG_CLIENT_NEEDS_OPEN BIT(15)
234 #define I40EVF_FLAG_CLIENT_NEEDS_CLOSE BIT(16)
235 #define I40EVF_FLAG_CLIENT_NEEDS_L2_PARAMS BIT(17)
236 #define I40EVF_FLAG_PROMISC_ON BIT(18)
237 #define I40EVF_FLAG_ALLMULTI_ON BIT(19)
238 #define I40EVF_FLAG_LEGACY_RX BIT(20)
239 /* duplicates for common code */
240 #define I40E_FLAG_DCB_ENABLED 0
241 #define I40E_FLAG_RX_CSUM_ENABLED I40EVF_FLAG_RX_CSUM_ENABLED
242 #define I40E_FLAG_LEGACY_RX I40EVF_FLAG_LEGACY_RX
243 /* flags for admin queue service task */
245 #define I40EVF_FLAG_AQ_ENABLE_QUEUES BIT(0)
246 #define I40EVF_FLAG_AQ_DISABLE_QUEUES BIT(1)
247 #define I40EVF_FLAG_AQ_ADD_MAC_FILTER BIT(2)
248 #define I40EVF_FLAG_AQ_ADD_VLAN_FILTER BIT(3)
249 #define I40EVF_FLAG_AQ_DEL_MAC_FILTER BIT(4)
250 #define I40EVF_FLAG_AQ_DEL_VLAN_FILTER BIT(5)
251 #define I40EVF_FLAG_AQ_CONFIGURE_QUEUES BIT(6)
252 #define I40EVF_FLAG_AQ_MAP_VECTORS BIT(7)
253 #define I40EVF_FLAG_AQ_HANDLE_RESET BIT(8)
254 #define I40EVF_FLAG_AQ_CONFIGURE_RSS BIT(9) /* direct AQ config */
255 #define I40EVF_FLAG_AQ_GET_CONFIG BIT(10)
256 /* Newer style, RSS done by the PF so we can ignore hardware vagaries. */
257 #define I40EVF_FLAG_AQ_GET_HENA BIT(11)
258 #define I40EVF_FLAG_AQ_SET_HENA BIT(12)
259 #define I40EVF_FLAG_AQ_SET_RSS_KEY BIT(13)
260 #define I40EVF_FLAG_AQ_SET_RSS_LUT BIT(14)
261 #define I40EVF_FLAG_AQ_REQUEST_PROMISC BIT(15)
262 #define I40EVF_FLAG_AQ_RELEASE_PROMISC BIT(16)
263 #define I40EVF_FLAG_AQ_REQUEST_ALLMULTI BIT(17)
264 #define I40EVF_FLAG_AQ_RELEASE_ALLMULTI BIT(18)
265 #define I40EVF_FLAG_AQ_ENABLE_VLAN_STRIPPING BIT(19)
266 #define I40EVF_FLAG_AQ_DISABLE_VLAN_STRIPPING BIT(20)
268 /* OS defined structs */
269 struct net_device *netdev;
270 struct pci_dev *pdev;
272 struct i40e_hw hw; /* defined in i40e_type.h */
274 enum i40evf_state_t state;
275 unsigned long crit_section;
277 struct work_struct watchdog_task;
278 bool netdev_registered;
280 enum virtchnl_link_speed link_speed;
281 enum virtchnl_ops current_op;
282 #define CLIENT_ALLOWED(_a) ((_a)->vf_res ? \
283 (_a)->vf_res->vf_cap_flags & \
284 VIRTCHNL_VF_OFFLOAD_IWARP : \
286 #define CLIENT_ENABLED(_a) ((_a)->cinst)
287 /* RSS by the PF should be preferred over RSS via other methods. */
288 #define RSS_PF(_a) ((_a)->vf_res->vf_cap_flags & \
289 VIRTCHNL_VF_OFFLOAD_RSS_PF)
290 #define RSS_AQ(_a) ((_a)->vf_res->vf_cap_flags & \
291 VIRTCHNL_VF_OFFLOAD_RSS_AQ)
292 #define RSS_REG(_a) (!((_a)->vf_res->vf_cap_flags & \
293 (VIRTCHNL_VF_OFFLOAD_RSS_AQ | \
294 VIRTCHNL_VF_OFFLOAD_RSS_PF)))
295 #define VLAN_ALLOWED(_a) ((_a)->vf_res->vf_cap_flags & \
296 VIRTCHNL_VF_OFFLOAD_VLAN)
297 struct virtchnl_vf_resource *vf_res; /* incl. all VSIs */
298 struct virtchnl_vsi_resource *vsi_res; /* our LAN VSI */
299 struct virtchnl_version_info pf_version;
300 #define PF_IS_V11(_a) (((_a)->pf_version.major == 1) && \
301 ((_a)->pf_version.minor == 1))
303 struct i40e_eth_stats current_stats;
315 /* Ethtool Private Flags */
319 struct list_head list;
320 struct i40evf_adapter *vf;
323 /* needed by i40evf_ethtool.c */
324 extern char i40evf_driver_name[];
325 extern const char i40evf_driver_version[];
327 int i40evf_up(struct i40evf_adapter *adapter);
328 void i40evf_down(struct i40evf_adapter *adapter);
329 int i40evf_process_config(struct i40evf_adapter *adapter);
330 void i40evf_schedule_reset(struct i40evf_adapter *adapter);
331 void i40evf_reset(struct i40evf_adapter *adapter);
332 void i40evf_set_ethtool_ops(struct net_device *netdev);
333 void i40evf_update_stats(struct i40evf_adapter *adapter);
334 void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter);
335 int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter);
336 void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask);
337 void i40evf_free_all_tx_resources(struct i40evf_adapter *adapter);
338 void i40evf_free_all_rx_resources(struct i40evf_adapter *adapter);
340 void i40e_napi_add_all(struct i40evf_adapter *adapter);
341 void i40e_napi_del_all(struct i40evf_adapter *adapter);
343 int i40evf_send_api_ver(struct i40evf_adapter *adapter);
344 int i40evf_verify_api_ver(struct i40evf_adapter *adapter);
345 int i40evf_send_vf_config_msg(struct i40evf_adapter *adapter);
346 int i40evf_get_vf_config(struct i40evf_adapter *adapter);
347 void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush);
348 void i40evf_configure_queues(struct i40evf_adapter *adapter);
349 void i40evf_deconfigure_queues(struct i40evf_adapter *adapter);
350 void i40evf_enable_queues(struct i40evf_adapter *adapter);
351 void i40evf_disable_queues(struct i40evf_adapter *adapter);
352 void i40evf_map_queues(struct i40evf_adapter *adapter);
353 void i40evf_add_ether_addrs(struct i40evf_adapter *adapter);
354 void i40evf_del_ether_addrs(struct i40evf_adapter *adapter);
355 void i40evf_add_vlans(struct i40evf_adapter *adapter);
356 void i40evf_del_vlans(struct i40evf_adapter *adapter);
357 void i40evf_set_promiscuous(struct i40evf_adapter *adapter, int flags);
358 void i40evf_request_stats(struct i40evf_adapter *adapter);
359 void i40evf_request_reset(struct i40evf_adapter *adapter);
360 void i40evf_get_hena(struct i40evf_adapter *adapter);
361 void i40evf_set_hena(struct i40evf_adapter *adapter);
362 void i40evf_set_rss_key(struct i40evf_adapter *adapter);
363 void i40evf_set_rss_lut(struct i40evf_adapter *adapter);
364 void i40evf_enable_vlan_stripping(struct i40evf_adapter *adapter);
365 void i40evf_disable_vlan_stripping(struct i40evf_adapter *adapter);
366 void i40evf_virtchnl_completion(struct i40evf_adapter *adapter,
367 enum virtchnl_ops v_opcode,
368 i40e_status v_retval, u8 *msg, u16 msglen);
369 int i40evf_config_rss(struct i40evf_adapter *adapter);
370 int i40evf_lan_add_device(struct i40evf_adapter *adapter);
371 int i40evf_lan_del_device(struct i40evf_adapter *adapter);
372 void i40evf_client_subtask(struct i40evf_adapter *adapter);
373 void i40evf_notify_client_message(struct i40e_vsi *vsi, u8 *msg, u16 len);
374 void i40evf_notify_client_l2_params(struct i40e_vsi *vsi);
375 void i40evf_notify_client_open(struct i40e_vsi *vsi);
376 void i40evf_notify_client_close(struct i40e_vsi *vsi, bool reset);
377 #endif /* _I40EVF_H_ */