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_VERSION "1.0.0.6"
55 #define DRV_COPYRIGHT "Copyright 2008-2015 Cisco Systems, Inc"
58 /* With Rx scatter support, we use two RQs on VIC per RQ used by app. Both
59 * RQs use the same CQ.
61 #define ENIC_RQ_MAX 16
62 #define ENIC_CQ_MAX (ENIC_WQ_MAX + (ENIC_RQ_MAX / 2))
63 #define ENIC_INTR_MAX (ENIC_CQ_MAX + 2)
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 */
84 #define ENICPMD_FDIR_MAX 64
86 struct enic_fdir_node {
87 struct rte_eth_fdir_filter filter;
93 struct rte_eth_fdir_stats stats;
94 struct rte_hash *hash;
95 struct enic_fdir_node *nodes[ENICPMD_FDIR_MAX];
98 struct enic_soft_stats {
99 rte_atomic64_t rx_nombuf;
100 rte_atomic64_t rx_packet_errors;
103 struct enic_memzone_entry {
104 const struct rte_memzone *rz;
105 LIST_ENTRY(enic_memzone_entry) entries;
108 /* Per-instance private data structure */
111 struct rte_pci_device *pdev;
112 struct vnic_enet_config config;
113 struct vnic_dev_bar bar0;
114 struct vnic_dev *vdev;
116 unsigned int port_id;
117 struct rte_eth_dev *rte_dev;
118 struct enic_fdir fdir;
119 char bdf_name[ENICPMD_BDF_LENGTH];
124 uint8_t mac_addr[ETH_ALEN];
125 pthread_t err_intr_thread;
134 unsigned int priv_flags;
137 struct vnic_wq wq[ENIC_WQ_MAX];
138 unsigned int wq_count;
141 struct vnic_rq rq[ENIC_RQ_MAX];
142 unsigned int rq_count;
144 /* completion queue */
145 struct vnic_cq cq[ENIC_CQ_MAX];
146 unsigned int cq_count;
148 /* interrupt resource */
149 struct vnic_intr intr;
150 unsigned int intr_count;
152 /* software counters */
153 struct enic_soft_stats soft_stats;
155 /* linked list storing memory allocations */
156 LIST_HEAD(enic_memzone_list, enic_memzone_entry) memzone_list;
157 rte_spinlock_t memzone_list_lock;
161 static inline unsigned int enic_sop_rq(unsigned int rq)
166 static inline unsigned int enic_data_rq(unsigned int rq)
171 static inline unsigned int enic_vnic_rq_count(struct enic *enic)
173 return enic->rq_count * 2;
176 static inline unsigned int enic_cq_rq(__rte_unused struct enic *enic, unsigned int rq)
178 /* Scatter rx uses two receive queues together with one
179 * completion queue, so the completion queue number is no
180 * longer the same as the rq number.
185 static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq)
187 return enic->rq_count + wq;
190 static inline unsigned int enic_msix_err_intr(__rte_unused struct enic *enic)
195 static inline struct enic *pmd_priv(struct rte_eth_dev *eth_dev)
197 return (struct enic *)eth_dev->data->dev_private;
200 static inline uint32_t
201 enic_ring_add(uint32_t n_descriptors, uint32_t i0, uint32_t i1)
203 uint32_t d = i0 + i1;
204 d -= (d >= n_descriptors) ? n_descriptors : 0;
208 static inline uint32_t
209 enic_ring_sub(uint32_t n_descriptors, uint32_t i0, uint32_t i1)
212 return (uint32_t)((d < 0) ? ((int32_t)n_descriptors + d) : d);
215 static inline uint32_t
216 enic_ring_incr(uint32_t n_descriptors, uint32_t idx)
219 if (unlikely(idx == n_descriptors))
224 extern void enic_fdir_stats_get(struct enic *enic,
225 struct rte_eth_fdir_stats *stats);
226 extern int enic_fdir_add_fltr(struct enic *enic,
227 struct rte_eth_fdir_filter *params);
228 extern int enic_fdir_del_fltr(struct enic *enic,
229 struct rte_eth_fdir_filter *params);
230 extern void enic_free_wq(void *txq);
231 extern int enic_alloc_intr_resources(struct enic *enic);
232 extern int enic_setup_finish(struct enic *enic);
233 extern int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
234 unsigned int socket_id, uint16_t nb_desc);
235 extern void enic_start_wq(struct enic *enic, uint16_t queue_idx);
236 extern int enic_stop_wq(struct enic *enic, uint16_t queue_idx);
237 extern void enic_start_rq(struct enic *enic, uint16_t queue_idx);
238 extern int enic_stop_rq(struct enic *enic, uint16_t queue_idx);
239 extern void enic_free_rq(void *rxq);
240 extern int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
241 unsigned int socket_id, struct rte_mempool *mp,
243 extern int enic_set_rss_nic_cfg(struct enic *enic);
244 extern int enic_set_vnic_res(struct enic *enic);
245 extern void enic_set_hdr_split_size(struct enic *enic, u16 split_hdr_size);
246 extern int enic_enable(struct enic *enic);
247 extern int enic_disable(struct enic *enic);
248 extern void enic_remove(struct enic *enic);
249 extern int enic_get_link_status(struct enic *enic);
250 extern void enic_dev_stats_get(struct enic *enic,
251 struct rte_eth_stats *r_stats);
252 extern void enic_dev_stats_clear(struct enic *enic);
253 extern void enic_add_packet_filter(struct enic *enic);
254 extern void enic_set_mac_address(struct enic *enic, uint8_t *mac_addr);
255 extern void enic_del_mac_address(struct enic *enic);
256 extern unsigned int enic_cleanup_wq(struct enic *enic, struct vnic_wq *wq);
257 extern void enic_send_pkt(struct enic *enic, struct vnic_wq *wq,
258 struct rte_mbuf *tx_pkt, unsigned short len,
259 uint8_t sop, uint8_t eop, uint8_t cq_entry,
260 uint16_t ol_flags, uint16_t vlan_tag);
262 extern void enic_post_wq_index(struct vnic_wq *wq);
263 extern int enic_probe(struct enic *enic);
264 extern int enic_clsf_init(struct enic *enic);
265 extern void enic_clsf_destroy(struct enic *enic);
266 uint16_t enic_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
268 uint16_t enic_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
270 int enic_set_mtu(struct enic *enic, uint16_t new_mtu);
271 #endif /* _ENIC_H_ */