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 <net/ip6_checksum.h>
45 #include "i40e_type.h"
46 #include "i40e_virtchnl.h"
47 #include "i40e_txrx.h"
49 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
50 #define PFX "i40evf: "
52 /* dummy struct to make common code less painful */
54 struct i40evf_adapter *back;
55 struct net_device *netdev;
56 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
65 /* How many Rx Buffers do we bundle into one write to the hardware ? */
66 #define I40EVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */
67 #define I40EVF_DEFAULT_TXD 512
68 #define I40EVF_DEFAULT_RXD 512
69 #define I40EVF_MAX_TXD 4096
70 #define I40EVF_MIN_TXD 64
71 #define I40EVF_MAX_RXD 4096
72 #define I40EVF_MIN_RXD 64
73 #define I40EVF_REQ_DESCRIPTOR_MULTIPLE 32
75 /* Supported Rx Buffer Sizes */
76 #define I40EVF_RXBUFFER_2048 2048
77 #define I40EVF_MAX_RXBUFFER 16384 /* largest size for single descriptor */
78 #define I40EVF_MAX_AQ_BUF_SIZE 4096
79 #define I40EVF_AQ_LEN 32
80 #define I40EVF_AQ_MAX_ERR 20 /* times to try before resetting AQ */
82 #define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
84 #define I40E_RX_DESC(R, i) (&(((union i40e_32byte_rx_desc *)((R)->desc))[i]))
85 #define I40E_TX_DESC(R, i) (&(((struct i40e_tx_desc *)((R)->desc))[i]))
86 #define I40E_TX_CTXTDESC(R, i) \
87 (&(((struct i40e_tx_context_desc *)((R)->desc))[i]))
90 #define I40EVF_HKEY_ARRAY_SIZE ((I40E_VFQF_HKEY_MAX_INDEX + 1) * 4)
91 #define I40EVF_HLUT_ARRAY_SIZE ((I40E_VFQF_HLUT_MAX_INDEX + 1) * 4)
93 /* MAX_MSIX_Q_VECTORS of these are allocated,
94 * but we only use one per queue-specific vector.
96 struct i40e_q_vector {
97 struct i40evf_adapter *adapter;
99 struct napi_struct napi;
100 unsigned long reg_idx;
101 struct i40e_ring_container rx;
102 struct i40e_ring_container tx;
104 u8 num_ringpairs; /* total number of ring pairs in vector */
105 #define ITR_COUNTDOWN_START 100
106 u8 itr_countdown; /* when 0 or 1 update ITR */
107 int v_idx; /* vector index in list */
108 char name[IFNAMSIZ + 9];
110 cpumask_var_t affinity_mask;
113 /* Helper macros to switch between ints/sec and what the register uses.
114 * And yes, it's the same math going both ways. The lowest value
115 * supported by all of the i40e hardware is 8.
117 #define EITR_INTS_PER_SEC_TO_REG(_eitr) \
118 ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8)
119 #define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG
121 #define I40EVF_DESC_UNUSED(R) \
122 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
123 (R)->next_to_clean - (R)->next_to_use - 1)
125 #define I40EVF_RX_DESC_ADV(R, i) \
126 (&(((union i40e_adv_rx_desc *)((R).desc))[i]))
127 #define I40EVF_TX_DESC_ADV(R, i) \
128 (&(((union i40e_adv_tx_desc *)((R).desc))[i]))
129 #define I40EVF_TX_CTXTDESC_ADV(R, i) \
130 (&(((struct i40e_adv_tx_context_desc *)((R).desc))[i]))
132 #define OTHER_VECTOR 1
133 #define NONQ_VECS (OTHER_VECTOR)
135 #define MIN_MSIX_Q_VECTORS 1
136 #define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NONQ_VECS)
138 #define I40EVF_QUEUE_END_OF_LIST 0x7FF
139 #define I40EVF_FREE_VECTOR 0x7FFF
140 struct i40evf_mac_filter {
141 struct list_head list;
142 u8 macaddr[ETH_ALEN];
143 bool remove; /* filter needs to be removed */
144 bool add; /* filter needs to be added */
147 struct i40evf_vlan_filter {
148 struct list_head list;
150 bool remove; /* filter needs to be removed */
151 bool add; /* filter needs to be added */
154 /* Driver state. The order of these is important! */
155 enum i40evf_state_t {
156 __I40EVF_STARTUP, /* driver loaded, probe complete */
157 __I40EVF_REMOVE, /* driver is being unloaded */
158 __I40EVF_INIT_VERSION_CHECK, /* aq msg sent, awaiting reply */
159 __I40EVF_INIT_GET_RESOURCES, /* aq msg sent, awaiting reply */
160 __I40EVF_INIT_SW, /* got resources, setting up structs */
161 __I40EVF_RESETTING, /* in reset */
162 /* Below here, watchdog is running */
163 __I40EVF_DOWN, /* ready, can be opened */
164 __I40EVF_DOWN_PENDING, /* descending, waiting for watchdog */
165 __I40EVF_TESTING, /* in ethtool self-test */
166 __I40EVF_RUNNING, /* opened, working */
169 enum i40evf_critical_section_t {
170 __I40EVF_IN_CRITICAL_TASK, /* cannot be interrupted */
172 /* make common code happy */
173 #define __I40E_DOWN __I40EVF_DOWN
175 /* board specific private data structure */
176 struct i40evf_adapter {
177 struct timer_list watchdog_timer;
178 struct work_struct reset_task;
179 struct work_struct adminq_task;
180 struct delayed_work init_task;
181 struct i40e_q_vector *q_vectors;
182 struct list_head vlan_filter_list;
183 char misc_vector_name[IFNAMSIZ + 9];
184 int num_active_queues;
187 struct i40e_ring *tx_rings;
188 u32 tx_timeout_count;
189 struct list_head mac_filter_list;
193 struct i40e_ring *rx_rings;
194 u64 hw_csum_rx_error;
196 int num_msix_vectors;
197 struct msix_entry *msix_entries;
200 #define I40EVF_FLAG_RX_CSUM_ENABLED BIT(0)
201 #define I40EVF_FLAG_IN_NETPOLL BIT(4)
202 #define I40EVF_FLAG_IMIR_ENABLED BIT(5)
203 #define I40EVF_FLAG_MQ_CAPABLE BIT(6)
204 #define I40EVF_FLAG_NEED_LINK_UPDATE BIT(7)
205 #define I40EVF_FLAG_PF_COMMS_FAILED BIT(8)
206 #define I40EVF_FLAG_RESET_PENDING BIT(9)
207 #define I40EVF_FLAG_RESET_NEEDED BIT(10)
208 #define I40EVF_FLAG_WB_ON_ITR_CAPABLE BIT(11)
209 #define I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE BIT(12)
210 #define I40EVF_FLAG_ADDR_SET_BY_PF BIT(13)
211 #define I40EVF_FLAG_SERVICE_CLIENT_REQUESTED BIT(14)
212 #define I40EVF_FLAG_PROMISC_ON BIT(15)
213 #define I40EVF_FLAG_ALLMULTI_ON BIT(16)
214 /* duplicates for common code */
215 #define I40E_FLAG_FDIR_ATR_ENABLED 0
216 #define I40E_FLAG_DCB_ENABLED 0
217 #define I40E_FLAG_IN_NETPOLL I40EVF_FLAG_IN_NETPOLL
218 #define I40E_FLAG_RX_CSUM_ENABLED I40EVF_FLAG_RX_CSUM_ENABLED
219 #define I40E_FLAG_WB_ON_ITR_CAPABLE I40EVF_FLAG_WB_ON_ITR_CAPABLE
220 #define I40E_FLAG_OUTER_UDP_CSUM_CAPABLE I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE
221 /* flags for admin queue service task */
223 #define I40EVF_FLAG_AQ_ENABLE_QUEUES BIT(0)
224 #define I40EVF_FLAG_AQ_DISABLE_QUEUES BIT(1)
225 #define I40EVF_FLAG_AQ_ADD_MAC_FILTER BIT(2)
226 #define I40EVF_FLAG_AQ_ADD_VLAN_FILTER BIT(3)
227 #define I40EVF_FLAG_AQ_DEL_MAC_FILTER BIT(4)
228 #define I40EVF_FLAG_AQ_DEL_VLAN_FILTER BIT(5)
229 #define I40EVF_FLAG_AQ_CONFIGURE_QUEUES BIT(6)
230 #define I40EVF_FLAG_AQ_MAP_VECTORS BIT(7)
231 #define I40EVF_FLAG_AQ_HANDLE_RESET BIT(8)
232 #define I40EVF_FLAG_AQ_CONFIGURE_RSS BIT(9) /* direct AQ config */
233 #define I40EVF_FLAG_AQ_GET_CONFIG BIT(10)
234 /* Newer style, RSS done by the PF so we can ignore hardware vagaries. */
235 #define I40EVF_FLAG_AQ_GET_HENA BIT(11)
236 #define I40EVF_FLAG_AQ_SET_HENA BIT(12)
237 #define I40EVF_FLAG_AQ_SET_RSS_KEY BIT(13)
238 #define I40EVF_FLAG_AQ_SET_RSS_LUT BIT(14)
239 #define I40EVF_FLAG_AQ_REQUEST_PROMISC BIT(15)
240 #define I40EVF_FLAG_AQ_RELEASE_PROMISC BIT(16)
241 #define I40EVF_FLAG_AQ_REQUEST_ALLMULTI BIT(17)
242 #define I40EVF_FLAG_AQ_RELEASE_ALLMULTI BIT(18)
244 /* OS defined structs */
245 struct net_device *netdev;
246 struct pci_dev *pdev;
247 struct net_device_stats net_stats;
249 struct i40e_hw hw; /* defined in i40e_type.h */
251 enum i40evf_state_t state;
252 unsigned long crit_section;
254 struct work_struct watchdog_task;
255 bool netdev_registered;
257 enum i40e_aq_link_speed link_speed;
258 enum i40e_virtchnl_ops current_op;
259 #define CLIENT_ENABLED(_a) ((_a)->vf_res ? \
260 (_a)->vf_res->vf_offload_flags & \
261 I40E_VIRTCHNL_VF_OFFLOAD_IWARP : \
263 /* RSS by the PF should be preferred over RSS via other methods. */
264 #define RSS_PF(_a) ((_a)->vf_res->vf_offload_flags & \
265 I40E_VIRTCHNL_VF_OFFLOAD_RSS_PF)
266 #define RSS_AQ(_a) ((_a)->vf_res->vf_offload_flags & \
267 I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ)
268 #define RSS_REG(_a) (!((_a)->vf_res->vf_offload_flags & \
269 (I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ | \
270 I40E_VIRTCHNL_VF_OFFLOAD_RSS_PF)))
271 #define VLAN_ALLOWED(_a) ((_a)->vf_res->vf_offload_flags & \
272 I40E_VIRTCHNL_VF_OFFLOAD_VLAN)
273 struct i40e_virtchnl_vf_resource *vf_res; /* incl. all VSIs */
274 struct i40e_virtchnl_vsi_resource *vsi_res; /* our LAN VSI */
275 struct i40e_virtchnl_version_info pf_version;
276 #define PF_IS_V11(_a) (((_a)->pf_version.major == 1) && \
277 ((_a)->pf_version.minor == 1))
279 struct i40e_eth_stats current_stats;
291 /* Ethtool Private Flags */
293 /* needed by i40evf_ethtool.c */
294 extern char i40evf_driver_name[];
295 extern const char i40evf_driver_version[];
297 int i40evf_up(struct i40evf_adapter *adapter);
298 void i40evf_down(struct i40evf_adapter *adapter);
299 int i40evf_process_config(struct i40evf_adapter *adapter);
300 void i40evf_schedule_reset(struct i40evf_adapter *adapter);
301 void i40evf_reset(struct i40evf_adapter *adapter);
302 void i40evf_set_ethtool_ops(struct net_device *netdev);
303 void i40evf_update_stats(struct i40evf_adapter *adapter);
304 void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter);
305 int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter);
306 void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask);
307 void i40evf_free_all_tx_resources(struct i40evf_adapter *adapter);
308 void i40evf_free_all_rx_resources(struct i40evf_adapter *adapter);
310 void i40e_napi_add_all(struct i40evf_adapter *adapter);
311 void i40e_napi_del_all(struct i40evf_adapter *adapter);
313 int i40evf_send_api_ver(struct i40evf_adapter *adapter);
314 int i40evf_verify_api_ver(struct i40evf_adapter *adapter);
315 int i40evf_send_vf_config_msg(struct i40evf_adapter *adapter);
316 int i40evf_get_vf_config(struct i40evf_adapter *adapter);
317 void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush);
318 void i40evf_configure_queues(struct i40evf_adapter *adapter);
319 void i40evf_deconfigure_queues(struct i40evf_adapter *adapter);
320 void i40evf_enable_queues(struct i40evf_adapter *adapter);
321 void i40evf_disable_queues(struct i40evf_adapter *adapter);
322 void i40evf_map_queues(struct i40evf_adapter *adapter);
323 void i40evf_add_ether_addrs(struct i40evf_adapter *adapter);
324 void i40evf_del_ether_addrs(struct i40evf_adapter *adapter);
325 void i40evf_add_vlans(struct i40evf_adapter *adapter);
326 void i40evf_del_vlans(struct i40evf_adapter *adapter);
327 void i40evf_set_promiscuous(struct i40evf_adapter *adapter, int flags);
328 void i40evf_request_stats(struct i40evf_adapter *adapter);
329 void i40evf_request_reset(struct i40evf_adapter *adapter);
330 void i40evf_get_hena(struct i40evf_adapter *adapter);
331 void i40evf_set_hena(struct i40evf_adapter *adapter);
332 void i40evf_set_rss_key(struct i40evf_adapter *adapter);
333 void i40evf_set_rss_lut(struct i40evf_adapter *adapter);
334 void i40evf_virtchnl_completion(struct i40evf_adapter *adapter,
335 enum i40e_virtchnl_ops v_opcode,
336 i40e_status v_retval, u8 *msg, u16 msglen);
337 int i40evf_config_rss(struct i40evf_adapter *adapter);
338 #endif /* _I40EVF_H_ */