2 * Copyright 2008-2014 Cisco Systems, Inc. All rights reserved.
3 * Copyright 2007 Nuova Systems, Inc. All rights reserved.
5 * Copyright (c) 2014, Cisco Systems, Inc.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
28 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
30 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
38 #include "vnic_enet.h"
43 #include "vnic_intr.h"
44 #include "vnic_stats.h"
48 #include "cq_enet_desc.h"
49 #include <sys/queue.h>
50 #include <rte_spinlock.h>
52 #define DRV_NAME "enic_pmd"
53 #define DRV_DESCRIPTION "Cisco VIC Ethernet NIC Poll-mode Driver"
54 #define DRV_COPYRIGHT "Copyright 2008-2015 Cisco Systems, Inc"
57 /* With Rx scatter support, we use two RQs on VIC per RQ used by app. Both
58 * RQs use the same CQ.
60 #define ENIC_RQ_MAX 16
61 #define ENIC_CQ_MAX (ENIC_WQ_MAX + (ENIC_RQ_MAX / 2))
62 #define ENIC_INTR_MAX (ENIC_CQ_MAX + 2)
63 #define ENIC_MAX_MAC_ADDR 64
65 #define VLAN_ETH_HLEN 18
67 #define ENICPMD_SETTING(enic, f) ((enic->config.flags & VENETF_##f) ? 1 : 0)
69 #define ENICPMD_BDF_LENGTH 13 /* 0000:00:00.0'\0' */
70 #define ENIC_CALC_IP_CKSUM 1
71 #define ENIC_CALC_TCP_UDP_CKSUM 2
72 #define ENIC_MAX_MTU 9000
73 #define ENIC_PAGE_SIZE 4096
74 #define PAGE_ROUND_UP(x) \
75 ((((unsigned long)(x)) + ENIC_PAGE_SIZE-1) & (~(ENIC_PAGE_SIZE-1)))
77 #define ENICPMD_VFIO_PATH "/dev/vfio/vfio"
78 /*#define ENIC_DESC_COUNT_MAKE_ODD (x) do{if ((~(x)) & 1) { (x)--; } }while(0)*/
80 #define PCI_DEVICE_ID_CISCO_VIC_ENET 0x0043 /* ethernet vnic */
81 #define PCI_DEVICE_ID_CISCO_VIC_ENET_VF 0x0071 /* enet SRIOV VF */
83 /* Special Filter id for non-specific packet flagging. Don't change value */
84 #define ENIC_MAGIC_FILTER_ID 0xffff
86 #define ENICPMD_FDIR_MAX 64
88 struct enic_fdir_node {
89 struct rte_eth_fdir_filter filter;
95 struct rte_eth_fdir_stats stats;
96 struct rte_hash *hash;
97 struct enic_fdir_node *nodes[ENICPMD_FDIR_MAX];
100 void (*copy_fltr_fn)(struct filter_v2 *filt,
101 struct rte_eth_fdir_input *input,
102 struct rte_eth_fdir_masks *masks);
105 struct enic_soft_stats {
106 rte_atomic64_t rx_nombuf;
107 rte_atomic64_t rx_packet_errors;
108 rte_atomic64_t tx_oversized;
111 struct enic_memzone_entry {
112 const struct rte_memzone *rz;
113 LIST_ENTRY(enic_memzone_entry) entries;
117 LIST_ENTRY(rte_flow) next;
119 struct filter_v2 enic_filter;
122 /* Per-instance private data structure */
125 struct rte_pci_device *pdev;
126 struct vnic_enet_config config;
127 struct vnic_dev_bar bar0;
128 struct vnic_dev *vdev;
130 unsigned int port_id;
131 struct rte_eth_dev *rte_dev;
132 struct enic_fdir fdir;
133 char bdf_name[ENICPMD_BDF_LENGTH];
138 uint8_t mac_addr[ETH_ALEN];
139 pthread_t err_intr_thread;
147 u32 flow_filter_mode;
151 unsigned int priv_flags;
154 struct vnic_wq wq[ENIC_WQ_MAX];
155 unsigned int wq_count;
158 struct vnic_rq rq[ENIC_RQ_MAX];
159 unsigned int rq_count;
161 /* completion queue */
162 struct vnic_cq cq[ENIC_CQ_MAX];
163 unsigned int cq_count;
165 /* interrupt resource */
166 struct vnic_intr intr;
167 unsigned int intr_count;
169 /* software counters */
170 struct enic_soft_stats soft_stats;
172 /* configured resources on vic */
173 unsigned int conf_rq_count;
174 unsigned int conf_wq_count;
175 unsigned int conf_cq_count;
176 unsigned int conf_intr_count;
178 /* linked list storing memory allocations */
179 LIST_HEAD(enic_memzone_list, enic_memzone_entry) memzone_list;
180 rte_spinlock_t memzone_list_lock;
181 rte_spinlock_t mtu_lock;
183 LIST_HEAD(enic_flows, rte_flow) flows;
184 rte_spinlock_t flows_lock;
187 /* Get the CQ index from a Start of Packet(SOP) RQ index */
188 static inline unsigned int enic_sop_rq_idx_to_cq_idx(unsigned int sop_idx)
193 /* Get the RTE RQ index from a Start of Packet(SOP) RQ index */
194 static inline unsigned int enic_sop_rq_idx_to_rte_idx(unsigned int sop_idx)
199 /* Get the Start of Packet(SOP) RQ index from a RTE RQ index */
200 static inline unsigned int enic_rte_rq_idx_to_sop_idx(unsigned int rte_idx)
205 /* Get the Data RQ index from a RTE RQ index */
206 static inline unsigned int enic_rte_rq_idx_to_data_idx(unsigned int rte_idx)
208 return rte_idx * 2 + 1;
211 static inline unsigned int enic_vnic_rq_count(struct enic *enic)
213 return enic->rq_count * 2;
216 static inline unsigned int enic_cq_rq(__rte_unused struct enic *enic, unsigned int rq)
218 /* Scatter rx uses two receive queues together with one
219 * completion queue, so the completion queue number is no
220 * longer the same as the rq number.
225 static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq)
227 return enic->rq_count + wq;
230 static inline unsigned int enic_msix_err_intr(__rte_unused struct enic *enic)
235 static inline struct enic *pmd_priv(struct rte_eth_dev *eth_dev)
237 return (struct enic *)eth_dev->data->dev_private;
240 static inline uint32_t
241 enic_ring_add(uint32_t n_descriptors, uint32_t i0, uint32_t i1)
243 uint32_t d = i0 + i1;
244 d -= (d >= n_descriptors) ? n_descriptors : 0;
248 static inline uint32_t
249 enic_ring_sub(uint32_t n_descriptors, uint32_t i0, uint32_t i1)
252 return (uint32_t)((d < 0) ? ((int32_t)n_descriptors + d) : d);
255 static inline uint32_t
256 enic_ring_incr(uint32_t n_descriptors, uint32_t idx)
259 if (unlikely(idx == n_descriptors))
264 extern void enic_fdir_stats_get(struct enic *enic,
265 struct rte_eth_fdir_stats *stats);
266 extern int enic_fdir_add_fltr(struct enic *enic,
267 struct rte_eth_fdir_filter *params);
268 extern int enic_fdir_del_fltr(struct enic *enic,
269 struct rte_eth_fdir_filter *params);
270 extern void enic_free_wq(void *txq);
271 extern int enic_alloc_intr_resources(struct enic *enic);
272 extern int enic_setup_finish(struct enic *enic);
273 extern int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
274 unsigned int socket_id, uint16_t nb_desc);
275 extern void enic_start_wq(struct enic *enic, uint16_t queue_idx);
276 extern int enic_stop_wq(struct enic *enic, uint16_t queue_idx);
277 extern void enic_start_rq(struct enic *enic, uint16_t queue_idx);
278 extern int enic_stop_rq(struct enic *enic, uint16_t queue_idx);
279 extern void enic_free_rq(void *rxq);
280 extern int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
281 unsigned int socket_id, struct rte_mempool *mp,
282 uint16_t nb_desc, uint16_t free_thresh);
283 extern int enic_set_rss_nic_cfg(struct enic *enic);
284 extern int enic_set_vnic_res(struct enic *enic);
285 extern void enic_set_hdr_split_size(struct enic *enic, u16 split_hdr_size);
286 extern int enic_enable(struct enic *enic);
287 extern int enic_disable(struct enic *enic);
288 extern void enic_remove(struct enic *enic);
289 extern int enic_get_link_status(struct enic *enic);
290 extern void enic_dev_stats_get(struct enic *enic,
291 struct rte_eth_stats *r_stats);
292 extern void enic_dev_stats_clear(struct enic *enic);
293 extern void enic_add_packet_filter(struct enic *enic);
294 int enic_set_mac_address(struct enic *enic, uint8_t *mac_addr);
295 void enic_del_mac_address(struct enic *enic, int mac_index);
296 extern unsigned int enic_cleanup_wq(struct enic *enic, struct vnic_wq *wq);
297 extern void enic_send_pkt(struct enic *enic, struct vnic_wq *wq,
298 struct rte_mbuf *tx_pkt, unsigned short len,
299 uint8_t sop, uint8_t eop, uint8_t cq_entry,
300 uint16_t ol_flags, uint16_t vlan_tag);
302 extern void enic_post_wq_index(struct vnic_wq *wq);
303 extern int enic_probe(struct enic *enic);
304 extern int enic_clsf_init(struct enic *enic);
305 extern void enic_clsf_destroy(struct enic *enic);
306 uint16_t enic_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
308 uint16_t enic_dummy_recv_pkts(void *rx_queue,
309 struct rte_mbuf **rx_pkts,
311 uint16_t enic_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
313 int enic_set_mtu(struct enic *enic, uint16_t new_mtu);
314 int enic_link_update(struct enic *enic);
315 void enic_fdir_info(struct enic *enic);
316 void enic_fdir_info_get(struct enic *enic, struct rte_eth_fdir_info *stats);
317 void copy_fltr_v1(struct filter_v2 *fltr, struct rte_eth_fdir_input *input,
318 struct rte_eth_fdir_masks *masks);
319 void copy_fltr_v2(struct filter_v2 *fltr, struct rte_eth_fdir_input *input,
320 struct rte_eth_fdir_masks *masks);
321 extern const struct rte_flow_ops enic_flow_ops;
322 #endif /* _ENIC_H_ */