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 VLAN_ETH_HLEN 18
30 #define ENICPMD_SETTING(enic, f) ((enic->config.flags & VENETF_##f) ? 1 : 0)
32 #define ENICPMD_BDF_LENGTH 13 /* 0000:00:00.0'\0' */
33 #define ENIC_CALC_IP_CKSUM 1
34 #define ENIC_CALC_TCP_UDP_CKSUM 2
35 #define ENIC_MAX_MTU 9000
36 #define ENIC_PAGE_SIZE 4096
37 #define PAGE_ROUND_UP(x) \
38 ((((unsigned long)(x)) + ENIC_PAGE_SIZE-1) & (~(ENIC_PAGE_SIZE-1)))
40 #define ENICPMD_VFIO_PATH "/dev/vfio/vfio"
41 /*#define ENIC_DESC_COUNT_MAKE_ODD (x) do{if ((~(x)) & 1) { (x)--; } }while(0)*/
43 #define PCI_DEVICE_ID_CISCO_VIC_ENET 0x0043 /* ethernet vnic */
44 #define PCI_DEVICE_ID_CISCO_VIC_ENET_VF 0x0071 /* enet SRIOV VF */
46 /* Special Filter id for non-specific packet flagging. Don't change value */
47 #define ENIC_MAGIC_FILTER_ID 0xffff
49 #define ENICPMD_FDIR_MAX 64
51 /* HW default VXLAN port */
52 #define ENIC_DEFAULT_VXLAN_PORT 4789
55 * Interrupt 0: LSC and errors
56 * Interrupt 1: rx queue 0
57 * Interrupt 2: rx queue 1
60 #define ENICPMD_LSC_INTR_OFFSET 0
61 #define ENICPMD_RXQ_INTR_OFFSET 1
63 struct enic_fdir_node {
64 struct rte_eth_fdir_filter filter;
70 struct rte_eth_fdir_stats stats;
71 struct rte_hash *hash;
72 struct enic_fdir_node *nodes[ENICPMD_FDIR_MAX];
75 void (*copy_fltr_fn)(struct filter_v2 *filt,
76 const struct rte_eth_fdir_input *input,
77 const struct rte_eth_fdir_masks *masks);
80 struct enic_soft_stats {
81 rte_atomic64_t rx_nombuf;
82 rte_atomic64_t rx_packet_errors;
83 rte_atomic64_t tx_oversized;
86 struct enic_memzone_entry {
87 const struct rte_memzone *rz;
88 LIST_ENTRY(enic_memzone_entry) entries;
92 LIST_ENTRY(rte_flow) next;
94 struct filter_v2 enic_filter;
97 /* Per-instance private data structure */
100 struct rte_pci_device *pdev;
101 struct vnic_enet_config config;
102 struct vnic_dev_bar bar0;
103 struct vnic_dev *vdev;
106 * mbuf_initializer contains 64 bits of mbuf rearm_data, used by
107 * the avx2 handler at this time.
109 uint64_t mbuf_initializer;
110 unsigned int port_id;
111 bool overlay_offload;
112 struct rte_eth_dev *rte_dev;
113 struct enic_fdir fdir;
114 char bdf_name[ENICPMD_BDF_LENGTH];
119 uint8_t mac_addr[ETH_ALEN];
120 pthread_t err_intr_thread;
128 u32 flow_filter_mode;
129 u8 filter_actions; /* HW supported actions */
131 bool disable_overlay; /* devargs disable_overlay=1 */
132 uint8_t enable_avx2_rx; /* devargs enable-avx2-rx=1 */
133 bool nic_cfg_chk; /* NIC_CFG_CHK available */
134 bool udp_rss_weak; /* Bodega style UDP RSS */
135 uint8_t ig_vlan_rewrite_mode; /* devargs ig-vlan-rewrite */
136 uint16_t vxlan_port; /* current vxlan port pushed to NIC */
139 unsigned int priv_flags;
141 /* work queue (len = conf_wq_count) */
143 unsigned int wq_count; /* equals eth_dev nb_tx_queues */
145 /* receive queue (len = conf_rq_count) */
147 unsigned int rq_count; /* equals eth_dev nb_rx_queues */
149 /* completion queue (len = conf_cq_count) */
151 unsigned int cq_count; /* equals rq_count + wq_count */
153 /* interrupt vectors (len = conf_intr_count) */
154 struct vnic_intr *intr;
155 unsigned int intr_count; /* equals enabled interrupts (lsc + rxqs) */
157 /* software counters */
158 struct enic_soft_stats soft_stats;
160 /* configured resources on vic */
161 unsigned int conf_rq_count;
162 unsigned int conf_wq_count;
163 unsigned int conf_cq_count;
164 unsigned int conf_intr_count;
166 /* linked list storing memory allocations */
167 LIST_HEAD(enic_memzone_list, enic_memzone_entry) memzone_list;
168 rte_spinlock_t memzone_list_lock;
169 rte_spinlock_t mtu_lock;
171 LIST_HEAD(enic_flows, rte_flow) flows;
175 uint8_t hash_key_size;
176 uint64_t flow_type_rss_offloads; /* 0 indicates RSS not supported */
178 * Keep a copy of current RSS config for queries, as we cannot retrieve
181 uint8_t rss_hash_type; /* NIC_CFG_RSS_HASH_TYPE flags */
183 uint64_t rss_hf; /* ETH_RSS flags */
184 union vnic_rss_key rss_key;
185 union vnic_rss_cpu rss_cpu;
187 uint64_t rx_offload_capa; /* DEV_RX_OFFLOAD flags */
188 uint64_t tx_offload_capa; /* DEV_TX_OFFLOAD flags */
189 uint64_t tx_queue_offload_capa; /* DEV_TX_OFFLOAD flags */
190 uint64_t tx_offload_mask; /* PKT_TX flags accepted */
192 /* Multicast MAC addresses added to the NIC */
194 struct rte_ether_addr mc_addrs[ENIC_MULTICAST_PERFECT_FILTERS];
197 /* Compute ethdev's max packet size from MTU */
198 static inline uint32_t enic_mtu_to_max_rx_pktlen(uint32_t mtu)
200 /* ethdev max size includes eth whereas NIC MTU does not */
201 return mtu + RTE_ETHER_HDR_LEN;
204 /* Get the CQ index from a Start of Packet(SOP) RQ index */
205 static inline unsigned int enic_sop_rq_idx_to_cq_idx(unsigned int sop_idx)
210 /* Get the RTE RQ index from a Start of Packet(SOP) RQ index */
211 static inline unsigned int enic_sop_rq_idx_to_rte_idx(unsigned int sop_idx)
216 /* Get the Start of Packet(SOP) RQ index from a RTE RQ index */
217 static inline unsigned int enic_rte_rq_idx_to_sop_idx(unsigned int rte_idx)
222 /* Get the Data RQ index from a RTE RQ index */
223 static inline unsigned int enic_rte_rq_idx_to_data_idx(unsigned int rte_idx)
225 return rte_idx * 2 + 1;
228 static inline unsigned int enic_vnic_rq_count(struct enic *enic)
230 return enic->rq_count * 2;
233 static inline unsigned int enic_cq_rq(__rte_unused struct enic *enic, unsigned int rq)
235 /* Scatter rx uses two receive queues together with one
236 * completion queue, so the completion queue number is no
237 * longer the same as the rq number.
242 static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq)
244 return enic->rq_count + wq;
247 static inline struct enic *pmd_priv(struct rte_eth_dev *eth_dev)
249 return eth_dev->data->dev_private;
252 static inline uint32_t
253 enic_ring_add(uint32_t n_descriptors, uint32_t i0, uint32_t i1)
255 uint32_t d = i0 + i1;
256 d -= (d >= n_descriptors) ? n_descriptors : 0;
260 static inline uint32_t
261 enic_ring_sub(uint32_t n_descriptors, uint32_t i0, uint32_t i1)
264 return (uint32_t)((d < 0) ? ((int32_t)n_descriptors + d) : d);
267 static inline uint32_t
268 enic_ring_incr(uint32_t n_descriptors, uint32_t idx)
271 if (unlikely(idx == n_descriptors))
276 void enic_fdir_stats_get(struct enic *enic,
277 struct rte_eth_fdir_stats *stats);
278 int enic_fdir_add_fltr(struct enic *enic,
279 struct rte_eth_fdir_filter *params);
280 int enic_fdir_del_fltr(struct enic *enic,
281 struct rte_eth_fdir_filter *params);
282 void enic_free_wq(void *txq);
283 int enic_alloc_intr_resources(struct enic *enic);
284 int enic_setup_finish(struct enic *enic);
285 int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
286 unsigned int socket_id, uint16_t nb_desc);
287 void enic_start_wq(struct enic *enic, uint16_t queue_idx);
288 int enic_stop_wq(struct enic *enic, uint16_t queue_idx);
289 void enic_start_rq(struct enic *enic, uint16_t queue_idx);
290 int enic_stop_rq(struct enic *enic, uint16_t queue_idx);
291 void enic_free_rq(void *rxq);
292 int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
293 unsigned int socket_id, struct rte_mempool *mp,
294 uint16_t nb_desc, uint16_t free_thresh);
295 int enic_set_vnic_res(struct enic *enic);
296 int enic_init_rss_nic_cfg(struct enic *enic);
297 int enic_set_rss_conf(struct enic *enic,
298 struct rte_eth_rss_conf *rss_conf);
299 int enic_set_rss_reta(struct enic *enic, union vnic_rss_cpu *rss_cpu);
300 int enic_set_vlan_strip(struct enic *enic);
301 int enic_enable(struct enic *enic);
302 int enic_disable(struct enic *enic);
303 void enic_remove(struct enic *enic);
304 int enic_get_link_status(struct enic *enic);
305 int enic_dev_stats_get(struct enic *enic,
306 struct rte_eth_stats *r_stats);
307 void enic_dev_stats_clear(struct enic *enic);
308 void enic_add_packet_filter(struct enic *enic);
309 int enic_set_mac_address(struct enic *enic, uint8_t *mac_addr);
310 int enic_del_mac_address(struct enic *enic, int mac_index);
311 unsigned int enic_cleanup_wq(struct enic *enic, struct vnic_wq *wq);
312 void enic_send_pkt(struct enic *enic, struct vnic_wq *wq,
313 struct rte_mbuf *tx_pkt, unsigned short len,
314 uint8_t sop, uint8_t eop, uint8_t cq_entry,
315 uint16_t ol_flags, uint16_t vlan_tag);
317 void enic_post_wq_index(struct vnic_wq *wq);
318 int enic_probe(struct enic *enic);
319 int enic_clsf_init(struct enic *enic);
320 void enic_clsf_destroy(struct enic *enic);
321 uint16_t enic_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
323 uint16_t enic_noscatter_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
325 uint16_t enic_dummy_recv_pkts(void *rx_queue,
326 struct rte_mbuf **rx_pkts,
328 uint16_t enic_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
330 uint16_t enic_simple_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
332 uint16_t enic_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
334 int enic_set_mtu(struct enic *enic, uint16_t new_mtu);
335 int enic_link_update(struct enic *enic);
336 bool enic_use_vector_rx_handler(struct enic *enic);
337 void enic_fdir_info(struct enic *enic);
338 void enic_fdir_info_get(struct enic *enic, struct rte_eth_fdir_info *stats);
339 extern const struct rte_flow_ops enic_flow_ops;
340 #endif /* _ENIC_H_ */