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;
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29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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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"
56 #define VLAN_ETH_HLEN 18
58 #define ENICPMD_SETTING(enic, f) ((enic->config.flags & VENETF_##f) ? 1 : 0)
60 #define ENICPMD_BDF_LENGTH 13 /* 0000:00:00.0'\0' */
61 #define ENIC_CALC_IP_CKSUM 1
62 #define ENIC_CALC_TCP_UDP_CKSUM 2
63 #define ENIC_MAX_MTU 9000
64 #define ENIC_PAGE_SIZE 4096
65 #define PAGE_ROUND_UP(x) \
66 ((((unsigned long)(x)) + ENIC_PAGE_SIZE-1) & (~(ENIC_PAGE_SIZE-1)))
68 #define ENICPMD_VFIO_PATH "/dev/vfio/vfio"
69 /*#define ENIC_DESC_COUNT_MAKE_ODD (x) do{if ((~(x)) & 1) { (x)--; } }while(0)*/
71 #define PCI_DEVICE_ID_CISCO_VIC_ENET 0x0043 /* ethernet vnic */
72 #define PCI_DEVICE_ID_CISCO_VIC_ENET_VF 0x0071 /* enet SRIOV VF */
75 #define ENICPMD_FDIR_MAX 64
77 struct enic_fdir_node {
78 struct rte_eth_fdir_filter filter;
84 struct rte_eth_fdir_stats stats;
85 struct rte_hash *hash;
86 struct enic_fdir_node *nodes[ENICPMD_FDIR_MAX];
89 void (*copy_fltr_fn)(struct filter_v2 *filt,
90 struct rte_eth_fdir_input *input,
91 struct rte_eth_fdir_masks *masks);
94 struct enic_soft_stats {
95 rte_atomic64_t rx_nombuf;
96 rte_atomic64_t rx_packet_errors;
97 rte_atomic64_t tx_oversized;
100 struct enic_memzone_entry {
101 const struct rte_memzone *rz;
102 LIST_ENTRY(enic_memzone_entry) entries;
105 /* Per-instance private data structure */
108 struct rte_pci_device *pdev;
109 struct vnic_enet_config config;
110 struct vnic_dev_bar bar0;
111 struct vnic_dev *vdev;
113 unsigned int port_id;
114 struct rte_eth_dev *rte_dev;
115 struct enic_fdir fdir;
116 char bdf_name[ENICPMD_BDF_LENGTH];
121 uint8_t mac_addr[ETH_ALEN];
122 pthread_t err_intr_thread;
132 unsigned int priv_flags;
134 /* work queue (len = conf_wq_count) */
136 unsigned int wq_count; /* equals eth_dev nb_tx_queues */
138 /* receive queue (len = conf_rq_count) */
140 unsigned int rq_count; /* equals eth_dev nb_rx_queues */
142 /* completion queue (len = conf_cq_count) */
144 unsigned int cq_count; /* equals rq_count + wq_count */
146 /* interrupt resource */
147 struct vnic_intr intr;
148 unsigned int intr_count;
150 /* software counters */
151 struct enic_soft_stats soft_stats;
153 /* configured resources on vic */
154 unsigned int conf_rq_count;
155 unsigned int conf_wq_count;
156 unsigned int conf_cq_count;
157 unsigned int conf_intr_count;
159 /* linked list storing memory allocations */
160 LIST_HEAD(enic_memzone_list, enic_memzone_entry) memzone_list;
161 rte_spinlock_t memzone_list_lock;
162 rte_spinlock_t mtu_lock;
166 /* Get the CQ index from a Start of Packet(SOP) RQ index */
167 static inline unsigned int enic_sop_rq_idx_to_cq_idx(unsigned int sop_idx)
172 /* Get the RTE RQ index from a Start of Packet(SOP) RQ index */
173 static inline unsigned int enic_sop_rq_idx_to_rte_idx(unsigned int sop_idx)
178 /* Get the Start of Packet(SOP) RQ index from a RTE RQ index */
179 static inline unsigned int enic_rte_rq_idx_to_sop_idx(unsigned int rte_idx)
184 /* Get the Data RQ index from a RTE RQ index */
185 static inline unsigned int enic_rte_rq_idx_to_data_idx(unsigned int rte_idx)
187 return rte_idx * 2 + 1;
190 static inline unsigned int enic_vnic_rq_count(struct enic *enic)
192 return enic->rq_count * 2;
195 static inline unsigned int enic_cq_rq(__rte_unused struct enic *enic, unsigned int rq)
197 /* Scatter rx uses two receive queues together with one
198 * completion queue, so the completion queue number is no
199 * longer the same as the rq number.
204 static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq)
206 return enic->rq_count + wq;
209 static inline unsigned int enic_msix_err_intr(__rte_unused struct enic *enic)
214 static inline struct enic *pmd_priv(struct rte_eth_dev *eth_dev)
216 return (struct enic *)eth_dev->data->dev_private;
219 static inline uint32_t
220 enic_ring_add(uint32_t n_descriptors, uint32_t i0, uint32_t i1)
222 uint32_t d = i0 + i1;
223 d -= (d >= n_descriptors) ? n_descriptors : 0;
227 static inline uint32_t
228 enic_ring_sub(uint32_t n_descriptors, uint32_t i0, uint32_t i1)
231 return (uint32_t)((d < 0) ? ((int32_t)n_descriptors + d) : d);
234 static inline uint32_t
235 enic_ring_incr(uint32_t n_descriptors, uint32_t idx)
238 if (unlikely(idx == n_descriptors))
243 extern void enic_fdir_stats_get(struct enic *enic,
244 struct rte_eth_fdir_stats *stats);
245 extern int enic_fdir_add_fltr(struct enic *enic,
246 struct rte_eth_fdir_filter *params);
247 extern int enic_fdir_del_fltr(struct enic *enic,
248 struct rte_eth_fdir_filter *params);
249 extern void enic_free_wq(void *txq);
250 extern int enic_alloc_intr_resources(struct enic *enic);
251 extern int enic_setup_finish(struct enic *enic);
252 extern int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
253 unsigned int socket_id, uint16_t nb_desc);
254 extern void enic_start_wq(struct enic *enic, uint16_t queue_idx);
255 extern int enic_stop_wq(struct enic *enic, uint16_t queue_idx);
256 extern void enic_start_rq(struct enic *enic, uint16_t queue_idx);
257 extern int enic_stop_rq(struct enic *enic, uint16_t queue_idx);
258 extern void enic_free_rq(void *rxq);
259 extern int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
260 unsigned int socket_id, struct rte_mempool *mp,
261 uint16_t nb_desc, uint16_t free_thresh);
262 extern int enic_set_rss_nic_cfg(struct enic *enic);
263 extern int enic_set_vnic_res(struct enic *enic);
264 extern void enic_set_hdr_split_size(struct enic *enic, u16 split_hdr_size);
265 extern int enic_enable(struct enic *enic);
266 extern int enic_disable(struct enic *enic);
267 extern void enic_remove(struct enic *enic);
268 extern int enic_get_link_status(struct enic *enic);
269 extern void enic_dev_stats_get(struct enic *enic,
270 struct rte_eth_stats *r_stats);
271 extern void enic_dev_stats_clear(struct enic *enic);
272 extern void enic_add_packet_filter(struct enic *enic);
273 extern void enic_set_mac_address(struct enic *enic, uint8_t *mac_addr);
274 extern void enic_del_mac_address(struct enic *enic);
275 extern unsigned int enic_cleanup_wq(struct enic *enic, struct vnic_wq *wq);
276 extern void enic_send_pkt(struct enic *enic, struct vnic_wq *wq,
277 struct rte_mbuf *tx_pkt, unsigned short len,
278 uint8_t sop, uint8_t eop, uint8_t cq_entry,
279 uint16_t ol_flags, uint16_t vlan_tag);
281 extern void enic_post_wq_index(struct vnic_wq *wq);
282 extern int enic_probe(struct enic *enic);
283 extern int enic_clsf_init(struct enic *enic);
284 extern void enic_clsf_destroy(struct enic *enic);
285 uint16_t enic_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
287 uint16_t enic_dummy_recv_pkts(__rte_unused void *rx_queue,
288 __rte_unused struct rte_mbuf **rx_pkts,
289 __rte_unused uint16_t nb_pkts);
290 uint16_t enic_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
292 int enic_set_mtu(struct enic *enic, uint16_t new_mtu);
293 int enic_link_update(struct enic *enic);
294 void enic_fdir_info(struct enic *enic);
295 void enic_fdir_info_get(struct enic *enic, struct rte_eth_fdir_info *stats);
296 void copy_fltr_v1(struct filter_v2 *fltr, struct rte_eth_fdir_input *input,
297 __rte_unused struct rte_eth_fdir_masks *masks);
298 void copy_fltr_v2(struct filter_v2 *fltr, struct rte_eth_fdir_input *input,
299 struct rte_eth_fdir_masks *masks);
300 #endif /* _ENIC_H_ */