1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2008-2017 Cisco Systems, Inc. All rights reserved.
3 * Copyright 2007 Nuova Systems, Inc. All rights reserved.
14 #include "vnic_intr.h"
15 #include "vnic_stats.h"
19 #include "cq_enet_desc.h"
21 #include <sys/queue.h>
22 #include <rte_spinlock.h>
24 #define DRV_NAME "enic_pmd"
25 #define DRV_DESCRIPTION "Cisco VIC Ethernet NIC Poll-mode Driver"
26 #define DRV_COPYRIGHT "Copyright 2008-2015 Cisco Systems, Inc"
28 #define ENIC_MAX_MAC_ADDR 64
30 #define VLAN_ETH_HLEN 18
32 #define ENICPMD_SETTING(enic, f) ((enic->config.flags & VENETF_##f) ? 1 : 0)
34 #define ENICPMD_BDF_LENGTH 13 /* 0000:00:00.0'\0' */
35 #define ENIC_CALC_IP_CKSUM 1
36 #define ENIC_CALC_TCP_UDP_CKSUM 2
37 #define ENIC_MAX_MTU 9000
38 #define ENIC_PAGE_SIZE 4096
39 #define PAGE_ROUND_UP(x) \
40 ((((unsigned long)(x)) + ENIC_PAGE_SIZE-1) & (~(ENIC_PAGE_SIZE-1)))
42 #define ENICPMD_VFIO_PATH "/dev/vfio/vfio"
43 /*#define ENIC_DESC_COUNT_MAKE_ODD (x) do{if ((~(x)) & 1) { (x)--; } }while(0)*/
45 #define PCI_DEVICE_ID_CISCO_VIC_ENET 0x0043 /* ethernet vnic */
46 #define PCI_DEVICE_ID_CISCO_VIC_ENET_VF 0x0071 /* enet SRIOV VF */
48 /* Special Filter id for non-specific packet flagging. Don't change value */
49 #define ENIC_MAGIC_FILTER_ID 0xffff
51 #define ENICPMD_FDIR_MAX 64
54 * Interrupt 0: LSC and errors
55 * Interrupt 1: rx queue 0
56 * Interrupt 2: rx queue 1
59 #define ENICPMD_LSC_INTR_OFFSET 0
60 #define ENICPMD_RXQ_INTR_OFFSET 1
62 struct enic_fdir_node {
63 struct rte_eth_fdir_filter filter;
69 struct rte_eth_fdir_stats stats;
70 struct rte_hash *hash;
71 struct enic_fdir_node *nodes[ENICPMD_FDIR_MAX];
74 void (*copy_fltr_fn)(struct filter_v2 *filt,
75 struct rte_eth_fdir_input *input,
76 struct rte_eth_fdir_masks *masks);
79 struct enic_soft_stats {
80 rte_atomic64_t rx_nombuf;
81 rte_atomic64_t rx_packet_errors;
82 rte_atomic64_t tx_oversized;
85 struct enic_memzone_entry {
86 const struct rte_memzone *rz;
87 LIST_ENTRY(enic_memzone_entry) entries;
91 LIST_ENTRY(rte_flow) next;
93 struct filter_v2 enic_filter;
96 /* Per-instance private data structure */
99 struct rte_pci_device *pdev;
100 struct vnic_enet_config config;
101 struct vnic_dev_bar bar0;
102 struct vnic_dev *vdev;
104 unsigned int port_id;
105 bool overlay_offload;
106 struct rte_eth_dev *rte_dev;
107 struct enic_fdir fdir;
108 char bdf_name[ENICPMD_BDF_LENGTH];
113 uint8_t mac_addr[ETH_ALEN];
114 pthread_t err_intr_thread;
122 u32 flow_filter_mode;
123 u8 filter_actions; /* HW supported actions */
125 bool disable_overlay; /* devargs disable_overlay=1 */
126 bool nic_cfg_chk; /* NIC_CFG_CHK available */
127 bool udp_rss_weak; /* Bodega style UDP RSS */
130 unsigned int priv_flags;
132 /* work queue (len = conf_wq_count) */
134 unsigned int wq_count; /* equals eth_dev nb_tx_queues */
136 /* receive queue (len = conf_rq_count) */
138 unsigned int rq_count; /* equals eth_dev nb_rx_queues */
140 /* completion queue (len = conf_cq_count) */
142 unsigned int cq_count; /* equals rq_count + wq_count */
144 /* interrupt vectors (len = conf_intr_count) */
145 struct vnic_intr *intr;
146 unsigned int intr_count; /* equals enabled interrupts (lsc + rxqs) */
148 /* software counters */
149 struct enic_soft_stats soft_stats;
151 /* configured resources on vic */
152 unsigned int conf_rq_count;
153 unsigned int conf_wq_count;
154 unsigned int conf_cq_count;
155 unsigned int conf_intr_count;
157 /* linked list storing memory allocations */
158 LIST_HEAD(enic_memzone_list, enic_memzone_entry) memzone_list;
159 rte_spinlock_t memzone_list_lock;
160 rte_spinlock_t mtu_lock;
162 LIST_HEAD(enic_flows, rte_flow) flows;
163 rte_spinlock_t flows_lock;
167 uint8_t hash_key_size;
168 uint64_t flow_type_rss_offloads; /* 0 indicates RSS not supported */
170 * Keep a copy of current RSS config for queries, as we cannot retrieve
173 uint8_t rss_hash_type; /* NIC_CFG_RSS_HASH_TYPE flags */
175 uint64_t rss_hf; /* ETH_RSS flags */
176 union vnic_rss_key rss_key;
177 union vnic_rss_cpu rss_cpu;
179 uint64_t rx_offload_capa; /* DEV_RX_OFFLOAD flags */
180 uint64_t tx_offload_capa; /* DEV_TX_OFFLOAD flags */
181 uint64_t tx_offload_mask; /* PKT_TX flags accepted */
184 /* Compute ethdev's max packet size from MTU */
185 static inline uint32_t enic_mtu_to_max_rx_pktlen(uint32_t mtu)
187 /* ethdev max size includes eth and crc whereas NIC MTU does not */
188 return mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
191 /* Get the CQ index from a Start of Packet(SOP) RQ index */
192 static inline unsigned int enic_sop_rq_idx_to_cq_idx(unsigned int sop_idx)
197 /* Get the RTE RQ index from a Start of Packet(SOP) RQ index */
198 static inline unsigned int enic_sop_rq_idx_to_rte_idx(unsigned int sop_idx)
203 /* Get the Start of Packet(SOP) RQ index from a RTE RQ index */
204 static inline unsigned int enic_rte_rq_idx_to_sop_idx(unsigned int rte_idx)
209 /* Get the Data RQ index from a RTE RQ index */
210 static inline unsigned int enic_rte_rq_idx_to_data_idx(unsigned int rte_idx)
212 return rte_idx * 2 + 1;
215 static inline unsigned int enic_vnic_rq_count(struct enic *enic)
217 return enic->rq_count * 2;
220 static inline unsigned int enic_cq_rq(__rte_unused struct enic *enic, unsigned int rq)
222 /* Scatter rx uses two receive queues together with one
223 * completion queue, so the completion queue number is no
224 * longer the same as the rq number.
229 static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq)
231 return enic->rq_count + wq;
234 static inline struct enic *pmd_priv(struct rte_eth_dev *eth_dev)
236 return (struct enic *)eth_dev->data->dev_private;
239 static inline uint32_t
240 enic_ring_add(uint32_t n_descriptors, uint32_t i0, uint32_t i1)
242 uint32_t d = i0 + i1;
243 d -= (d >= n_descriptors) ? n_descriptors : 0;
247 static inline uint32_t
248 enic_ring_sub(uint32_t n_descriptors, uint32_t i0, uint32_t i1)
251 return (uint32_t)((d < 0) ? ((int32_t)n_descriptors + d) : d);
254 static inline uint32_t
255 enic_ring_incr(uint32_t n_descriptors, uint32_t idx)
258 if (unlikely(idx == n_descriptors))
263 void enic_fdir_stats_get(struct enic *enic,
264 struct rte_eth_fdir_stats *stats);
265 int enic_fdir_add_fltr(struct enic *enic,
266 struct rte_eth_fdir_filter *params);
267 int enic_fdir_del_fltr(struct enic *enic,
268 struct rte_eth_fdir_filter *params);
269 void enic_free_wq(void *txq);
270 int enic_alloc_intr_resources(struct enic *enic);
271 int enic_setup_finish(struct enic *enic);
272 int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
273 unsigned int socket_id, uint16_t nb_desc);
274 void enic_start_wq(struct enic *enic, uint16_t queue_idx);
275 int enic_stop_wq(struct enic *enic, uint16_t queue_idx);
276 void enic_start_rq(struct enic *enic, uint16_t queue_idx);
277 int enic_stop_rq(struct enic *enic, uint16_t queue_idx);
278 void enic_free_rq(void *rxq);
279 int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
280 unsigned int socket_id, struct rte_mempool *mp,
281 uint16_t nb_desc, uint16_t free_thresh);
282 int enic_set_vnic_res(struct enic *enic);
283 int enic_init_rss_nic_cfg(struct enic *enic);
284 int enic_set_rss_conf(struct enic *enic,
285 struct rte_eth_rss_conf *rss_conf);
286 int enic_set_rss_reta(struct enic *enic, union vnic_rss_cpu *rss_cpu);
287 int enic_set_vlan_strip(struct enic *enic);
288 int enic_enable(struct enic *enic);
289 int enic_disable(struct enic *enic);
290 void enic_remove(struct enic *enic);
291 int enic_get_link_status(struct enic *enic);
292 int enic_dev_stats_get(struct enic *enic,
293 struct rte_eth_stats *r_stats);
294 void enic_dev_stats_clear(struct enic *enic);
295 void enic_add_packet_filter(struct enic *enic);
296 int enic_set_mac_address(struct enic *enic, uint8_t *mac_addr);
297 int enic_del_mac_address(struct enic *enic, int mac_index);
298 unsigned int enic_cleanup_wq(struct enic *enic, struct vnic_wq *wq);
299 void enic_send_pkt(struct enic *enic, struct vnic_wq *wq,
300 struct rte_mbuf *tx_pkt, unsigned short len,
301 uint8_t sop, uint8_t eop, uint8_t cq_entry,
302 uint16_t ol_flags, uint16_t vlan_tag);
304 void enic_post_wq_index(struct vnic_wq *wq);
305 int enic_probe(struct enic *enic);
306 int enic_clsf_init(struct enic *enic);
307 void enic_clsf_destroy(struct enic *enic);
308 uint16_t enic_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
310 uint16_t enic_dummy_recv_pkts(void *rx_queue,
311 struct rte_mbuf **rx_pkts,
313 uint16_t enic_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
315 uint16_t enic_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
317 int enic_set_mtu(struct enic *enic, uint16_t new_mtu);
318 int enic_link_update(struct enic *enic);
319 void enic_fdir_info(struct enic *enic);
320 void enic_fdir_info_get(struct enic *enic, struct rte_eth_fdir_info *stats);
321 void copy_fltr_v1(struct filter_v2 *fltr, struct rte_eth_fdir_input *input,
322 struct rte_eth_fdir_masks *masks);
323 void copy_fltr_v2(struct filter_v2 *fltr, struct rte_eth_fdir_input *input,
324 struct rte_eth_fdir_masks *masks);
325 extern const struct rte_flow_ops enic_flow_ops;
326 #endif /* _ENIC_H_ */