net/enic: support mbuf fast free offload
[dpdk.git] / drivers / net / enic / enic_res.c
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.
4  */
5
6 #include "enic_compat.h"
7 #include "rte_ethdev_driver.h"
8 #include "wq_enet_desc.h"
9 #include "rq_enet_desc.h"
10 #include "cq_enet_desc.h"
11 #include "vnic_resource.h"
12 #include "vnic_enet.h"
13 #include "vnic_dev.h"
14 #include "vnic_wq.h"
15 #include "vnic_rq.h"
16 #include "vnic_cq.h"
17 #include "vnic_intr.h"
18 #include "vnic_stats.h"
19 #include "vnic_nic.h"
20 #include "vnic_rss.h"
21 #include "enic_res.h"
22 #include "enic.h"
23
24 int enic_get_vnic_config(struct enic *enic)
25 {
26         struct vnic_enet_config *c = &enic->config;
27         int err;
28
29         err = vnic_dev_get_mac_addr(enic->vdev, enic->mac_addr);
30         if (err) {
31                 dev_err(enic_get_dev(enic),
32                         "Error getting MAC addr, %d\n", err);
33                 return err;
34         }
35
36
37 #define GET_CONFIG(m) \
38         do { \
39                 err = vnic_dev_spec(enic->vdev, \
40                         offsetof(struct vnic_enet_config, m), \
41                         sizeof(c->m), &c->m); \
42                 if (err) { \
43                         dev_err(enic_get_dev(enic), \
44                                 "Error getting %s, %d\n", #m, err); \
45                         return err; \
46                 } \
47         } while (0)
48
49         GET_CONFIG(flags);
50         GET_CONFIG(wq_desc_count);
51         GET_CONFIG(rq_desc_count);
52         GET_CONFIG(mtu);
53         GET_CONFIG(intr_timer_type);
54         GET_CONFIG(intr_mode);
55         GET_CONFIG(intr_timer_usec);
56         GET_CONFIG(loop_tag);
57         GET_CONFIG(num_arfs);
58         GET_CONFIG(max_pkt_size);
59
60         /* max packet size is only defined in newer VIC firmware
61          * and will be 0 for legacy firmware and VICs
62          */
63         if (c->max_pkt_size > ENIC_DEFAULT_RX_MAX_PKT_SIZE)
64                 enic->max_mtu = c->max_pkt_size - (ETHER_HDR_LEN + 4);
65         else
66                 enic->max_mtu = ENIC_DEFAULT_RX_MAX_PKT_SIZE
67                                 - (ETHER_HDR_LEN + 4);
68         if (c->mtu == 0)
69                 c->mtu = 1500;
70
71         enic->rte_dev->data->mtu = min_t(u16, enic->max_mtu,
72                                          max_t(u16, ENIC_MIN_MTU, c->mtu));
73
74         enic->adv_filters = vnic_dev_capable_adv_filters(enic->vdev);
75         dev_info(enic, "Advanced Filters %savailable\n", ((enic->adv_filters)
76                  ? "" : "not "));
77
78         err = vnic_dev_capable_filter_mode(enic->vdev, &enic->flow_filter_mode,
79                                            &enic->filter_actions);
80         if (err) {
81                 dev_err(enic_get_dev(enic),
82                         "Error getting filter modes, %d\n", err);
83                 return err;
84         }
85         vnic_dev_capable_udp_rss_weak(enic->vdev, &enic->nic_cfg_chk,
86                                       &enic->udp_rss_weak);
87
88         dev_info(enic, "Flow api filter mode: %s Actions: %s%s%s\n",
89                 ((enic->flow_filter_mode == FILTER_DPDK_1) ? "DPDK" :
90                 ((enic->flow_filter_mode == FILTER_USNIC_IP) ? "USNIC" :
91                 ((enic->flow_filter_mode == FILTER_IPV4_5TUPLE) ? "5TUPLE" :
92                 "NONE"))),
93                 ((enic->filter_actions & FILTER_ACTION_RQ_STEERING_FLAG) ?
94                  "steer " : ""),
95                 ((enic->filter_actions & FILTER_ACTION_FILTER_ID_FLAG) ?
96                  "tag " : ""),
97                 ((enic->filter_actions & FILTER_ACTION_DROP_FLAG) ?
98                  "drop " : ""));
99
100         c->wq_desc_count =
101                 min_t(u32, ENIC_MAX_WQ_DESCS,
102                 max_t(u32, ENIC_MIN_WQ_DESCS,
103                 c->wq_desc_count));
104         c->wq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */
105
106         c->rq_desc_count =
107                 min_t(u32, ENIC_MAX_RQ_DESCS,
108                 max_t(u32, ENIC_MIN_RQ_DESCS,
109                 c->rq_desc_count));
110         c->rq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */
111
112         c->intr_timer_usec = min_t(u32, c->intr_timer_usec,
113                 vnic_dev_get_intr_coal_timer_max(enic->vdev));
114
115         dev_info(enic_get_dev(enic),
116                 "vNIC MAC addr %02x:%02x:%02x:%02x:%02x:%02x "
117                 "wq/rq %d/%d mtu %d, max mtu:%d\n",
118                 enic->mac_addr[0], enic->mac_addr[1], enic->mac_addr[2],
119                 enic->mac_addr[3], enic->mac_addr[4], enic->mac_addr[5],
120                 c->wq_desc_count, c->rq_desc_count,
121                 enic->rte_dev->data->mtu, enic->max_mtu);
122         dev_info(enic_get_dev(enic), "vNIC csum tx/rx %s/%s "
123                 "rss %s intr mode %s type %s timer %d usec "
124                 "loopback tag 0x%04x\n",
125                 ENIC_SETTING(enic, TXCSUM) ? "yes" : "no",
126                 ENIC_SETTING(enic, RXCSUM) ? "yes" : "no",
127                 ENIC_SETTING(enic, RSS) ?
128                         (ENIC_SETTING(enic, RSSHASH_UDPIPV4) ? "+UDP" :
129                         ((enic->udp_rss_weak ? "+udp" :
130                         "yes"))) : "no",
131                 c->intr_mode == VENET_INTR_MODE_INTX ? "INTx" :
132                 c->intr_mode == VENET_INTR_MODE_MSI ? "MSI" :
133                 c->intr_mode == VENET_INTR_MODE_ANY ? "any" :
134                 "unknown",
135                 c->intr_timer_type == VENET_INTR_TYPE_MIN ? "min" :
136                 c->intr_timer_type == VENET_INTR_TYPE_IDLE ? "idle" :
137                 "unknown",
138                 c->intr_timer_usec,
139                 c->loop_tag);
140
141         /* RSS settings from vNIC */
142         enic->reta_size = ENIC_RSS_RETA_SIZE;
143         enic->hash_key_size = ENIC_RSS_HASH_KEY_SIZE;
144         enic->flow_type_rss_offloads = 0;
145         if (ENIC_SETTING(enic, RSSHASH_IPV4))
146                 /*
147                  * IPV4 hash type handles both non-frag and frag packet types.
148                  * TCP/UDP is controlled via a separate flag below.
149                  */
150                 enic->flow_type_rss_offloads |= ETH_RSS_IPV4 |
151                         ETH_RSS_FRAG_IPV4 | ETH_RSS_NONFRAG_IPV4_OTHER;
152         if (ENIC_SETTING(enic, RSSHASH_TCPIPV4))
153                 enic->flow_type_rss_offloads |= ETH_RSS_NONFRAG_IPV4_TCP;
154         if (ENIC_SETTING(enic, RSSHASH_IPV6))
155                 /*
156                  * The VIC adapter can perform RSS on IPv6 packets with and
157                  * without extension headers. An IPv6 "fragment" is an IPv6
158                  * packet with the fragment extension header.
159                  */
160                 enic->flow_type_rss_offloads |= ETH_RSS_IPV6 |
161                         ETH_RSS_IPV6_EX | ETH_RSS_FRAG_IPV6 |
162                         ETH_RSS_NONFRAG_IPV6_OTHER;
163         if (ENIC_SETTING(enic, RSSHASH_TCPIPV6))
164                 enic->flow_type_rss_offloads |= ETH_RSS_NONFRAG_IPV6_TCP |
165                         ETH_RSS_IPV6_TCP_EX;
166         if (enic->udp_rss_weak)
167                 enic->flow_type_rss_offloads |=
168                         ETH_RSS_NONFRAG_IPV4_UDP | ETH_RSS_NONFRAG_IPV6_UDP |
169                         ETH_RSS_IPV6_UDP_EX;
170         if (ENIC_SETTING(enic, RSSHASH_UDPIPV4))
171                 enic->flow_type_rss_offloads |= ETH_RSS_NONFRAG_IPV4_UDP;
172         if (ENIC_SETTING(enic, RSSHASH_UDPIPV6))
173                 enic->flow_type_rss_offloads |= ETH_RSS_NONFRAG_IPV6_UDP |
174                         ETH_RSS_IPV6_UDP_EX;
175
176         /* Zero offloads if RSS is not enabled */
177         if (!ENIC_SETTING(enic, RSS))
178                 enic->flow_type_rss_offloads = 0;
179
180         enic->vxlan = ENIC_SETTING(enic, VXLAN) &&
181                 vnic_dev_capable_vxlan(enic->vdev);
182         /*
183          * Default hardware capabilities. enic_dev_init() may add additional
184          * flags if it enables overlay offloads.
185          */
186         enic->tx_queue_offload_capa = DEV_TX_OFFLOAD_MBUF_FAST_FREE;
187         enic->tx_offload_capa =
188                 enic->tx_queue_offload_capa |
189                 DEV_TX_OFFLOAD_MULTI_SEGS |
190                 DEV_TX_OFFLOAD_VLAN_INSERT |
191                 DEV_TX_OFFLOAD_IPV4_CKSUM |
192                 DEV_TX_OFFLOAD_UDP_CKSUM |
193                 DEV_TX_OFFLOAD_TCP_CKSUM |
194                 DEV_TX_OFFLOAD_TCP_TSO;
195         enic->rx_offload_capa =
196                 DEV_RX_OFFLOAD_SCATTER |
197                 DEV_RX_OFFLOAD_JUMBO_FRAME |
198                 DEV_RX_OFFLOAD_CRC_STRIP |
199                 DEV_RX_OFFLOAD_VLAN_STRIP |
200                 DEV_RX_OFFLOAD_IPV4_CKSUM |
201                 DEV_RX_OFFLOAD_UDP_CKSUM |
202                 DEV_RX_OFFLOAD_TCP_CKSUM;
203         enic->tx_offload_mask =
204                 PKT_TX_VLAN_PKT |
205                 PKT_TX_IP_CKSUM |
206                 PKT_TX_L4_MASK |
207                 PKT_TX_TCP_SEG;
208
209         return 0;
210 }
211
212 int enic_add_vlan(struct enic *enic, u16 vlanid)
213 {
214         u64 a0 = vlanid, a1 = 0;
215         int wait = 1000;
216         int err;
217
218         err = vnic_dev_cmd(enic->vdev, CMD_VLAN_ADD, &a0, &a1, wait);
219         if (err)
220                 dev_err(enic_get_dev(enic), "Can't add vlan id, %d\n", err);
221
222         return err;
223 }
224
225 int enic_del_vlan(struct enic *enic, u16 vlanid)
226 {
227         u64 a0 = vlanid, a1 = 0;
228         int wait = 1000;
229         int err;
230
231         err = vnic_dev_cmd(enic->vdev, CMD_VLAN_DEL, &a0, &a1, wait);
232         if (err)
233                 dev_err(enic_get_dev(enic), "Can't delete vlan id, %d\n", err);
234
235         return err;
236 }
237
238 int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type,
239         u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en,
240         u8 ig_vlan_strip_en)
241 {
242         enum vnic_devcmd_cmd cmd;
243         u64 a0, a1;
244         u32 nic_cfg;
245         int wait = 1000;
246
247         vnic_set_nic_cfg(&nic_cfg, rss_default_cpu,
248                 rss_hash_type, rss_hash_bits, rss_base_cpu,
249                 rss_enable, tso_ipid_split_en, ig_vlan_strip_en);
250
251         a0 = nic_cfg;
252         a1 = 0;
253         cmd = enic->nic_cfg_chk ? CMD_NIC_CFG_CHK : CMD_NIC_CFG;
254         return vnic_dev_cmd(enic->vdev, cmd, &a0, &a1, wait);
255 }
256
257 int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len)
258 {
259         u64 a0 = (u64)key_pa, a1 = len;
260         int wait = 1000;
261
262         return vnic_dev_cmd(enic->vdev, CMD_RSS_KEY, &a0, &a1, wait);
263 }
264
265 int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len)
266 {
267         u64 a0 = (u64)cpu_pa, a1 = len;
268         int wait = 1000;
269
270         return vnic_dev_cmd(enic->vdev, CMD_RSS_CPU, &a0, &a1, wait);
271 }
272
273 void enic_free_vnic_resources(struct enic *enic)
274 {
275         unsigned int i;
276
277         for (i = 0; i < enic->wq_count; i++)
278                 vnic_wq_free(&enic->wq[i]);
279         for (i = 0; i < enic_vnic_rq_count(enic); i++)
280                 if (enic->rq[i].in_use)
281                         vnic_rq_free(&enic->rq[i]);
282         for (i = 0; i < enic->cq_count; i++)
283                 vnic_cq_free(&enic->cq[i]);
284         for (i = 0; i < enic->intr_count; i++)
285                 vnic_intr_free(&enic->intr[i]);
286 }
287
288 void enic_get_res_counts(struct enic *enic)
289 {
290         enic->conf_wq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_WQ);
291         enic->conf_rq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_RQ);
292         enic->conf_cq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_CQ);
293         enic->conf_intr_count = vnic_dev_get_res_count(enic->vdev,
294                 RES_TYPE_INTR_CTRL);
295
296         dev_info(enic_get_dev(enic),
297                 "vNIC resources avail: wq %d rq %d cq %d intr %d\n",
298                 enic->conf_wq_count, enic->conf_rq_count,
299                 enic->conf_cq_count, enic->conf_intr_count);
300 }