1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
7 #include <linux/module.h>
10 #include <linux/netdevice.h>
11 #include <linux/vmalloc.h>
12 #include <linux/interrupt.h>
13 #include <linux/ethtool.h>
14 #include <linux/if_vlan.h>
16 #include <linux/tcp.h>
17 #include <linux/sctp.h>
18 #include <linux/ipv6.h>
19 #include <linux/kernel.h>
20 #include <linux/bitops.h>
21 #include <linux/timer.h>
22 #include <linux/workqueue.h>
23 #include <linux/wait.h>
24 #include <linux/delay.h>
25 #include <linux/gfp.h>
26 #include <linux/skbuff.h>
27 #include <linux/dma-mapping.h>
28 #include <linux/etherdevice.h>
29 #include <linux/socket.h>
30 #include <linux/jiffies.h>
31 #include <net/ip6_checksum.h>
32 #include <net/pkt_cls.h>
34 #include <net/tc_act/tc_gact.h>
35 #include <net/tc_act/tc_mirred.h>
37 #include "i40e_type.h"
38 #include <linux/avf/virtchnl.h>
39 #include "iavf_txrx.h"
41 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
44 /* VSI state flags shared with common code */
45 enum iavf_vsi_state_t {
47 /* This must be last as it determines the size of the BITMAP */
48 __I40E_VSI_STATE_SIZE__,
51 /* dummy struct to make common code less painful */
53 struct iavf_adapter *back;
54 struct net_device *netdev;
55 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
58 DECLARE_BITMAP(state, __I40E_VSI_STATE_SIZE__);
62 void *priv; /* client driver data reference. */
65 /* How many Rx Buffers do we bundle into one write to the hardware ? */
66 #define IAVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */
67 #define IAVF_DEFAULT_TXD 512
68 #define IAVF_DEFAULT_RXD 512
69 #define IAVF_MAX_TXD 4096
70 #define IAVF_MIN_TXD 64
71 #define IAVF_MAX_RXD 4096
72 #define IAVF_MIN_RXD 64
73 #define IAVF_REQ_DESCRIPTOR_MULTIPLE 32
74 #define IAVF_MAX_AQ_BUF_SIZE 4096
75 #define IAVF_AQ_LEN 32
76 #define IAVF_AQ_MAX_ERR 20 /* times to try before resetting AQ */
78 #define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
80 #define IAVF_RX_DESC(R, i) (&(((union i40e_32byte_rx_desc *)((R)->desc))[i]))
81 #define IAVF_TX_DESC(R, i) (&(((struct i40e_tx_desc *)((R)->desc))[i]))
82 #define IAVF_TX_CTXTDESC(R, i) \
83 (&(((struct i40e_tx_context_desc *)((R)->desc))[i]))
84 #define IAVF_MAX_REQ_QUEUES 4
86 #define IAVF_HKEY_ARRAY_SIZE ((IAVF_VFQF_HKEY_MAX_INDEX + 1) * 4)
87 #define IAVF_HLUT_ARRAY_SIZE ((IAVF_VFQF_HLUT_MAX_INDEX + 1) * 4)
88 #define IAVF_MBPS_DIVISOR 125000 /* divisor to convert to Mbps */
90 /* MAX_MSIX_Q_VECTORS of these are allocated,
91 * but we only use one per queue-specific vector.
93 struct i40e_q_vector {
94 struct iavf_adapter *adapter;
96 struct napi_struct napi;
97 struct i40e_ring_container rx;
98 struct i40e_ring_container tx;
100 u8 itr_countdown; /* when 0 should adjust adaptive ITR */
101 u8 num_ringpairs; /* total number of ring pairs in vector */
102 u16 v_idx; /* index in the vsi->q_vector array. */
103 u16 reg_idx; /* register index of the interrupt */
104 char name[IFNAMSIZ + 15];
106 cpumask_t affinity_mask;
107 struct irq_affinity_notify affinity_notify;
110 /* Helper macros to switch between ints/sec and what the register uses.
111 * And yes, it's the same math going both ways. The lowest value
112 * supported by all of the i40e hardware is 8.
114 #define EITR_INTS_PER_SEC_TO_REG(_eitr) \
115 ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8)
116 #define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG
118 #define IAVF_DESC_UNUSED(R) \
119 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
120 (R)->next_to_clean - (R)->next_to_use - 1)
122 #define IAVF_RX_DESC_ADV(R, i) \
123 (&(((union i40e_adv_rx_desc *)((R).desc))[i]))
124 #define IAVF_TX_DESC_ADV(R, i) \
125 (&(((union i40e_adv_tx_desc *)((R).desc))[i]))
126 #define IAVF_TX_CTXTDESC_ADV(R, i) \
127 (&(((struct i40e_adv_tx_context_desc *)((R).desc))[i]))
129 #define OTHER_VECTOR 1
130 #define NONQ_VECS (OTHER_VECTOR)
132 #define MIN_MSIX_Q_VECTORS 1
133 #define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NONQ_VECS)
135 #define IAVF_QUEUE_END_OF_LIST 0x7FF
136 #define IAVF_FREE_VECTOR 0x7FFF
137 struct iavf_mac_filter {
138 struct list_head list;
139 u8 macaddr[ETH_ALEN];
140 bool remove; /* filter needs to be removed */
141 bool add; /* filter needs to be added */
144 struct iavf_vlan_filter {
145 struct list_head list;
147 bool remove; /* filter needs to be removed */
148 bool add; /* filter needs to be added */
151 #define IAVF_MAX_TRAFFIC_CLASS 4
152 /* State of traffic class creation */
153 enum iavf_tc_state_t {
154 __IAVF_TC_INVALID, /* no traffic class, default state */
155 __IAVF_TC_RUNNING, /* traffic classes have been created */
159 struct iavf_channel_config {
160 struct virtchnl_channel_info ch_info[IAVF_MAX_TRAFFIC_CLASS];
161 enum iavf_tc_state_t state;
165 /* State of cloud filter */
166 enum iavf_cloud_filter_state_t {
167 __IAVF_CF_INVALID, /* cloud filter not added */
168 __IAVF_CF_ADD_PENDING, /* cloud filter pending add by the PF */
169 __IAVF_CF_DEL_PENDING, /* cloud filter pending del by the PF */
170 __IAVF_CF_ACTIVE, /* cloud filter is active */
173 /* Driver state. The order of these is important! */
175 __IAVF_STARTUP, /* driver loaded, probe complete */
176 __IAVF_REMOVE, /* driver is being unloaded */
177 __IAVF_INIT_VERSION_CHECK, /* aq msg sent, awaiting reply */
178 __IAVF_INIT_GET_RESOURCES, /* aq msg sent, awaiting reply */
179 __IAVF_INIT_SW, /* got resources, setting up structs */
180 __IAVF_RESETTING, /* in reset */
181 /* Below here, watchdog is running */
182 __IAVF_DOWN, /* ready, can be opened */
183 __IAVF_DOWN_PENDING, /* descending, waiting for watchdog */
184 __IAVF_TESTING, /* in ethtool self-test */
185 __IAVF_RUNNING, /* opened, working */
188 enum iavf_critical_section_t {
189 __IAVF_IN_CRITICAL_TASK, /* cannot be interrupted */
190 __IAVF_IN_CLIENT_TASK,
191 __IAVF_IN_REMOVE_TASK, /* device being removed */
194 #define IAVF_CLOUD_FIELD_OMAC 0x01
195 #define IAVF_CLOUD_FIELD_IMAC 0x02
196 #define IAVF_CLOUD_FIELD_IVLAN 0x04
197 #define IAVF_CLOUD_FIELD_TEN_ID 0x08
198 #define IAVF_CLOUD_FIELD_IIP 0x10
200 #define IAVF_CF_FLAGS_OMAC IAVF_CLOUD_FIELD_OMAC
201 #define IAVF_CF_FLAGS_IMAC IAVF_CLOUD_FIELD_IMAC
202 #define IAVF_CF_FLAGS_IMAC_IVLAN (IAVF_CLOUD_FIELD_IMAC |\
203 IAVF_CLOUD_FIELD_IVLAN)
204 #define IAVF_CF_FLAGS_IMAC_TEN_ID (IAVF_CLOUD_FIELD_IMAC |\
205 IAVF_CLOUD_FIELD_TEN_ID)
206 #define IAVF_CF_FLAGS_OMAC_TEN_ID_IMAC (IAVF_CLOUD_FIELD_OMAC |\
207 IAVF_CLOUD_FIELD_IMAC |\
208 IAVF_CLOUD_FIELD_TEN_ID)
209 #define IAVF_CF_FLAGS_IMAC_IVLAN_TEN_ID (IAVF_CLOUD_FIELD_IMAC |\
210 IAVF_CLOUD_FIELD_IVLAN |\
211 IAVF_CLOUD_FIELD_TEN_ID)
212 #define IAVF_CF_FLAGS_IIP I40E_CLOUD_FIELD_IIP
214 /* bookkeeping of cloud filters */
215 struct iavf_cloud_filter {
216 enum iavf_cloud_filter_state_t state;
217 struct list_head list;
218 struct virtchnl_filter f;
219 unsigned long cookie;
220 bool del; /* filter needs to be deleted */
221 bool add; /* filter needs to be added */
224 /* board specific private data structure */
225 struct iavf_adapter {
226 struct timer_list watchdog_timer;
227 struct work_struct reset_task;
228 struct work_struct adminq_task;
229 struct delayed_work client_task;
230 struct delayed_work init_task;
231 wait_queue_head_t down_waitqueue;
232 struct i40e_q_vector *q_vectors;
233 struct list_head vlan_filter_list;
234 struct list_head mac_filter_list;
235 /* Lock to protect accesses to MAC and VLAN lists */
236 spinlock_t mac_vlan_list_lock;
237 char misc_vector_name[IFNAMSIZ + 9];
238 int num_active_queues;
242 struct i40e_ring *tx_rings;
243 u32 tx_timeout_count;
247 struct i40e_ring *rx_rings;
248 u64 hw_csum_rx_error;
250 int num_msix_vectors;
252 int iwarp_base_vector;
254 struct i40e_client_instance *cinst;
255 struct msix_entry *msix_entries;
258 #define IAVF_FLAG_RX_CSUM_ENABLED BIT(0)
259 #define IAVF_FLAG_PF_COMMS_FAILED BIT(3)
260 #define IAVF_FLAG_RESET_PENDING BIT(4)
261 #define IAVF_FLAG_RESET_NEEDED BIT(5)
262 #define IAVF_FLAG_WB_ON_ITR_CAPABLE BIT(6)
263 #define IAVF_FLAG_ADDR_SET_BY_PF BIT(8)
264 #define IAVF_FLAG_SERVICE_CLIENT_REQUESTED BIT(9)
265 #define IAVF_FLAG_CLIENT_NEEDS_OPEN BIT(10)
266 #define IAVF_FLAG_CLIENT_NEEDS_CLOSE BIT(11)
267 #define IAVF_FLAG_CLIENT_NEEDS_L2_PARAMS BIT(12)
268 #define IAVF_FLAG_PROMISC_ON BIT(13)
269 #define IAVF_FLAG_ALLMULTI_ON BIT(14)
270 #define IAVF_FLAG_LEGACY_RX BIT(15)
271 #define IAVF_FLAG_REINIT_ITR_NEEDED BIT(16)
272 #define IAVF_FLAG_QUEUES_DISABLED BIT(17)
273 /* duplicates for common code */
274 #define I40E_FLAG_DCB_ENABLED 0
275 #define I40E_FLAG_RX_CSUM_ENABLED IAVF_FLAG_RX_CSUM_ENABLED
276 #define I40E_FLAG_LEGACY_RX IAVF_FLAG_LEGACY_RX
277 /* flags for admin queue service task */
279 #define IAVF_FLAG_AQ_ENABLE_QUEUES BIT(0)
280 #define IAVF_FLAG_AQ_DISABLE_QUEUES BIT(1)
281 #define IAVF_FLAG_AQ_ADD_MAC_FILTER BIT(2)
282 #define IAVF_FLAG_AQ_ADD_VLAN_FILTER BIT(3)
283 #define IAVF_FLAG_AQ_DEL_MAC_FILTER BIT(4)
284 #define IAVF_FLAG_AQ_DEL_VLAN_FILTER BIT(5)
285 #define IAVF_FLAG_AQ_CONFIGURE_QUEUES BIT(6)
286 #define IAVF_FLAG_AQ_MAP_VECTORS BIT(7)
287 #define IAVF_FLAG_AQ_HANDLE_RESET BIT(8)
288 #define IAVF_FLAG_AQ_CONFIGURE_RSS BIT(9) /* direct AQ config */
289 #define IAVF_FLAG_AQ_GET_CONFIG BIT(10)
290 /* Newer style, RSS done by the PF so we can ignore hardware vagaries. */
291 #define IAVF_FLAG_AQ_GET_HENA BIT(11)
292 #define IAVF_FLAG_AQ_SET_HENA BIT(12)
293 #define IAVF_FLAG_AQ_SET_RSS_KEY BIT(13)
294 #define IAVF_FLAG_AQ_SET_RSS_LUT BIT(14)
295 #define IAVF_FLAG_AQ_REQUEST_PROMISC BIT(15)
296 #define IAVF_FLAG_AQ_RELEASE_PROMISC BIT(16)
297 #define IAVF_FLAG_AQ_REQUEST_ALLMULTI BIT(17)
298 #define IAVF_FLAG_AQ_RELEASE_ALLMULTI BIT(18)
299 #define IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING BIT(19)
300 #define IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING BIT(20)
301 #define IAVF_FLAG_AQ_ENABLE_CHANNELS BIT(21)
302 #define IAVF_FLAG_AQ_DISABLE_CHANNELS BIT(22)
303 #define IAVF_FLAG_AQ_ADD_CLOUD_FILTER BIT(23)
304 #define IAVF_FLAG_AQ_DEL_CLOUD_FILTER BIT(24)
306 /* OS defined structs */
307 struct net_device *netdev;
308 struct pci_dev *pdev;
310 struct iavf_hw hw; /* defined in i40e_type.h */
312 enum iavf_state_t state;
313 unsigned long crit_section;
315 struct work_struct watchdog_task;
316 bool netdev_registered;
318 enum virtchnl_link_speed link_speed;
319 enum virtchnl_ops current_op;
320 #define CLIENT_ALLOWED(_a) ((_a)->vf_res ? \
321 (_a)->vf_res->vf_cap_flags & \
322 VIRTCHNL_VF_OFFLOAD_IWARP : \
324 #define CLIENT_ENABLED(_a) ((_a)->cinst)
325 /* RSS by the PF should be preferred over RSS via other methods. */
326 #define RSS_PF(_a) ((_a)->vf_res->vf_cap_flags & \
327 VIRTCHNL_VF_OFFLOAD_RSS_PF)
328 #define RSS_AQ(_a) ((_a)->vf_res->vf_cap_flags & \
329 VIRTCHNL_VF_OFFLOAD_RSS_AQ)
330 #define RSS_REG(_a) (!((_a)->vf_res->vf_cap_flags & \
331 (VIRTCHNL_VF_OFFLOAD_RSS_AQ | \
332 VIRTCHNL_VF_OFFLOAD_RSS_PF)))
333 #define VLAN_ALLOWED(_a) ((_a)->vf_res->vf_cap_flags & \
334 VIRTCHNL_VF_OFFLOAD_VLAN)
335 struct virtchnl_vf_resource *vf_res; /* incl. all VSIs */
336 struct virtchnl_vsi_resource *vsi_res; /* our LAN VSI */
337 struct virtchnl_version_info pf_version;
338 #define PF_IS_V11(_a) (((_a)->pf_version.major == 1) && \
339 ((_a)->pf_version.minor == 1))
341 struct i40e_eth_stats current_stats;
350 /* ADQ related members */
351 struct iavf_channel_config ch_config;
353 struct list_head cloud_filter_list;
354 /* lock to protest access to the cloud filter list */
355 spinlock_t cloud_filter_list_lock;
356 u16 num_cloud_filters;
360 /* Ethtool Private Flags */
364 struct list_head list;
365 struct iavf_adapter *vf;
368 /* needed by iavf_ethtool.c */
369 extern char iavf_driver_name[];
370 extern const char iavf_driver_version[];
372 int iavf_up(struct iavf_adapter *adapter);
373 void iavf_down(struct iavf_adapter *adapter);
374 int iavf_process_config(struct iavf_adapter *adapter);
375 void iavf_schedule_reset(struct iavf_adapter *adapter);
376 void iavf_reset(struct iavf_adapter *adapter);
377 void iavf_set_ethtool_ops(struct net_device *netdev);
378 void iavf_update_stats(struct iavf_adapter *adapter);
379 void iavf_reset_interrupt_capability(struct iavf_adapter *adapter);
380 int iavf_init_interrupt_scheme(struct iavf_adapter *adapter);
381 void iavf_irq_enable_queues(struct iavf_adapter *adapter, u32 mask);
382 void iavf_free_all_tx_resources(struct iavf_adapter *adapter);
383 void iavf_free_all_rx_resources(struct iavf_adapter *adapter);
385 void i40e_napi_add_all(struct iavf_adapter *adapter);
386 void i40e_napi_del_all(struct iavf_adapter *adapter);
388 int iavf_send_api_ver(struct iavf_adapter *adapter);
389 int iavf_verify_api_ver(struct iavf_adapter *adapter);
390 int iavf_send_vf_config_msg(struct iavf_adapter *adapter);
391 int iavf_get_vf_config(struct iavf_adapter *adapter);
392 void iavf_irq_enable(struct iavf_adapter *adapter, bool flush);
393 void iavf_configure_queues(struct iavf_adapter *adapter);
394 void iavf_deconfigure_queues(struct iavf_adapter *adapter);
395 void iavf_enable_queues(struct iavf_adapter *adapter);
396 void iavf_disable_queues(struct iavf_adapter *adapter);
397 void iavf_map_queues(struct iavf_adapter *adapter);
398 int iavf_request_queues(struct iavf_adapter *adapter, int num);
399 void iavf_add_ether_addrs(struct iavf_adapter *adapter);
400 void iavf_del_ether_addrs(struct iavf_adapter *adapter);
401 void iavf_add_vlans(struct iavf_adapter *adapter);
402 void iavf_del_vlans(struct iavf_adapter *adapter);
403 void iavf_set_promiscuous(struct iavf_adapter *adapter, int flags);
404 void iavf_request_stats(struct iavf_adapter *adapter);
405 void iavf_request_reset(struct iavf_adapter *adapter);
406 void iavf_get_hena(struct iavf_adapter *adapter);
407 void iavf_set_hena(struct iavf_adapter *adapter);
408 void iavf_set_rss_key(struct iavf_adapter *adapter);
409 void iavf_set_rss_lut(struct iavf_adapter *adapter);
410 void iavf_enable_vlan_stripping(struct iavf_adapter *adapter);
411 void iavf_disable_vlan_stripping(struct iavf_adapter *adapter);
412 void iavf_virtchnl_completion(struct iavf_adapter *adapter,
413 enum virtchnl_ops v_opcode,
414 iavf_status v_retval, u8 *msg, u16 msglen);
415 int iavf_config_rss(struct iavf_adapter *adapter);
416 int iavf_lan_add_device(struct iavf_adapter *adapter);
417 int iavf_lan_del_device(struct iavf_adapter *adapter);
418 void iavf_client_subtask(struct iavf_adapter *adapter);
419 void iavf_notify_client_message(struct i40e_vsi *vsi, u8 *msg, u16 len);
420 void iavf_notify_client_l2_params(struct i40e_vsi *vsi);
421 void iavf_notify_client_open(struct i40e_vsi *vsi);
422 void iavf_notify_client_close(struct i40e_vsi *vsi, bool reset);
423 void iavf_enable_channels(struct iavf_adapter *adapter);
424 void iavf_disable_channels(struct iavf_adapter *adapter);
425 void iavf_add_cloud_filter(struct iavf_adapter *adapter);
426 void iavf_del_cloud_filter(struct iavf_adapter *adapter);
427 #endif /* _IAVF_H_ */