FD.io VPP  v20.05.1-6-gf53edbc3b
Vector Packet Processing
common.c
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1 /*
2  * Copyright (c) 2017 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #include <vnet/vnet.h>
17 #include <vppinfra/vec.h>
18 #include <vppinfra/format.h>
19 #include <assert.h>
20 
21 #include <vnet/ip/ip.h>
22 #include <vnet/ethernet/ethernet.h>
24 #include <dpdk/buffer.h>
25 #include <dpdk/device/dpdk.h>
26 #include <dpdk/device/dpdk_priv.h>
27 #include <vppinfra/error.h>
28 
29 void
30 dpdk_device_error (dpdk_device_t * xd, char *str, int rv)
31 {
32  dpdk_log_err ("Interface %U error %d: %s",
33  format_dpdk_device_name, xd->port_id, rv, rte_strerror (rv));
34  xd->errors = clib_error_return (xd->errors, "%s[port:%d, errno:%d]: %s",
35  str, xd->port_id, rv, rte_strerror (rv));
36 }
37 
38 void
40 {
41  dpdk_main_t *dm = &dpdk_main;
43  vnet_main_t *vnm = vnet_get_main ();
46  struct rte_eth_dev_info dev_info;
47  u64 bitmap;
48  int rv;
49  int j;
50 
51  ASSERT (vlib_get_thread_index () == 0);
52 
53  clib_error_free (xd->errors);
55 
56  if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
57  {
59  dpdk_device_stop (xd);
60  }
61 
62  /* Enable flow director when flows exist */
63  if (xd->pmd == VNET_DPDK_PMD_I40E)
64  {
65  if ((xd->flags & DPDK_DEVICE_FLAG_RX_FLOW_OFFLOAD) != 0)
66  xd->port_conf.fdir_conf.mode = RTE_FDIR_MODE_PERFECT;
67  else
68  xd->port_conf.fdir_conf.mode = RTE_FDIR_MODE_NONE;
69  }
70 
71  rte_eth_dev_info_get (xd->port_id, &dev_info);
72 
73  bitmap = xd->port_conf.txmode.offloads & ~dev_info.tx_offload_capa;
74  if (bitmap)
75  {
76  dpdk_log_warn ("unsupported tx offloads requested on port %u: %U",
78  xd->port_conf.txmode.offloads ^= bitmap;
79  }
80 
81  bitmap = xd->port_conf.rxmode.offloads & ~dev_info.rx_offload_capa;
82  if (bitmap)
83  {
84  dpdk_log_warn ("unsupported rx offloads requested on port %u: %U",
86  xd->port_conf.rxmode.offloads ^= bitmap;
87  }
88 
89  rv = rte_eth_dev_configure (xd->port_id, xd->rx_q_used,
90  xd->tx_q_used, &xd->port_conf);
91 
92  if (rv < 0)
93  {
94  dpdk_device_error (xd, "rte_eth_dev_configure", rv);
95  goto error;
96  }
97 
98  /* Set up one TX-queue per worker thread */
99  for (j = 0; j < xd->tx_q_used; j++)
100  {
101  rv =
102  rte_eth_tx_queue_setup (xd->port_id, j, xd->nb_tx_desc,
103  xd->cpu_socket, &xd->tx_conf);
104 
105  /* retry with any other CPU socket */
106  if (rv < 0)
107  rv =
108  rte_eth_tx_queue_setup (xd->port_id, j,
109  xd->nb_tx_desc, SOCKET_ID_ANY,
110  &xd->tx_conf);
111  if (rv < 0)
112  dpdk_device_error (xd, "rte_eth_tx_queue_setup", rv);
113  }
114 
117  for (j = 0; j < xd->rx_q_used; j++)
118  {
120  xd->hw_if_index, j);
121  unsigned lcore = vlib_worker_threads[tidx].cpu_id;
122  u16 socket_id = rte_lcore_to_socket_id (lcore);
123  u8 bpidx = vlib_buffer_pool_get_default_for_numa (vm, socket_id);
124  vlib_buffer_pool_t *bp = vlib_get_buffer_pool (vm, bpidx);
125  struct rte_mempool *mp = dpdk_mempool_by_buffer_pool_index[bpidx];
126 
127  rv = rte_eth_rx_queue_setup (xd->port_id, j, xd->nb_rx_desc,
128  xd->cpu_socket, 0, mp);
129 
130  /* retry with any other CPU socket */
131  if (rv < 0)
132  rv = rte_eth_rx_queue_setup (xd->port_id, j, xd->nb_rx_desc,
133  SOCKET_ID_ANY, 0, mp);
134 
135  xd->buffer_pool_for_queue[j] = bp->index;
136 
137  if (rv < 0)
138  dpdk_device_error (xd, "rte_eth_rx_queue_setup", rv);
139  }
140 
141  if (vec_len (xd->errors))
142  goto error;
143 
144  rte_eth_dev_set_mtu (xd->port_id, hi->max_packet_bytes);
145 
146  if (xd->flags & DPDK_DEVICE_FLAG_ADMIN_UP)
147  dpdk_device_start (xd);
148 
149  if (vec_len (xd->errors))
150  goto error;
151 
152  return;
153 
154 error:
155  xd->flags |= DPDK_DEVICE_FLAG_PMD_INIT_FAIL;
157 }
158 
159 void
161 {
162  int rv;
163 
164  if (xd->flags & DPDK_DEVICE_FLAG_PMD_INIT_FAIL)
165  return;
166 
167  rv = rte_eth_dev_start (xd->port_id);
168 
169  if (rv)
170  {
171  dpdk_device_error (xd, "rte_eth_dev_start", rv);
172  return;
173  }
174 
175  if (xd->default_mac_address)
176  rv = rte_eth_dev_default_mac_addr_set (xd->port_id,
177  (void *) xd->default_mac_address);
178 
179  if (rv)
180  dpdk_device_error (xd, "rte_eth_dev_default_mac_addr_set", rv);
181 
182  if (xd->flags & DPDK_DEVICE_FLAG_PROMISC)
183  rte_eth_promiscuous_enable (xd->port_id);
184  else
185  rte_eth_promiscuous_disable (xd->port_id);
186 
187  rte_eth_allmulticast_enable (xd->port_id);
188 
189  dpdk_log_info ("Interface %U started",
191 }
192 
193 void
195 {
196  if (xd->flags & DPDK_DEVICE_FLAG_PMD_INIT_FAIL)
197  return;
198 
199  rte_eth_allmulticast_disable (xd->port_id);
200  rte_eth_dev_stop (xd->port_id);
201  clib_memset (&xd->link, 0, sizeof (struct rte_eth_link));
202 
203  dpdk_log_info ("Interface %U stopped",
205 }
206 
207 void vl_api_force_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
208 
209 always_inline int
211  enum rte_eth_event_type type, void *param)
212 {
213  struct rte_eth_link link;
214 
215  RTE_SET_USED (param);
216  if (type != RTE_ETH_EVENT_INTR_LSC)
217  {
218  dpdk_log_info ("Unknown event %d received for port %d", type, port_id);
219  return -1;
220  }
221 
222  rte_eth_link_get_nowait (port_id, &link);
223  u8 link_up = link.link_status;
224  if (link_up)
225  dpdk_log_info ("Port %d Link Up - speed %u Mbps - %s",
226  port_id, (unsigned) link.link_speed,
227  (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
228  "full-duplex" : "half-duplex");
229  else
230  dpdk_log_info ("Port %d Link Down\n\n", port_id);
231 
232  return 0;
233 }
234 
235 int
237  enum rte_eth_event_type type,
238  void *param,
239  void *ret_param __attribute__ ((unused)))
240 {
241  return dpdk_port_state_callback_inline (port_id, type, param);
242 }
243 
244 /* If this device is PCI return pointer to info, otherwise NULL */
245 struct rte_pci_device *
246 dpdk_get_pci_device (const struct rte_eth_dev_info *info)
247 {
248  const struct rte_bus *bus;
249 
250  bus = rte_bus_find_by_device (info->device);
251  if (bus && !strcmp (bus->name, "pci"))
252  return RTE_DEV_TO_PCI (info->device);
253  else
254  return NULL;
255 }
256 
257 /*
258  * fd.io coding-style-patch-verification: ON
259  *
260  * Local Variables:
261  * eval: (c-set-style "gnu")
262  * End:
263  */
u8 * default_mac_address
Definition: dpdk.h:217
format_function_t format_dpdk_tx_offload_caps
Definition: dpdk.h:450
void vl_api_force_rpc_call_main_thread(void *fp, u8 *data, u32 data_length)
Definition: vlib_api.c:619
dpdk_main_t dpdk_main
Definition: init.c:46
vnet_main_t * vnet_get_main(void)
Definition: misc.c:46
unsigned long u64
Definition: types.h:89
u32 sw_if_index
Definition: dpdk.h:168
static_always_inline vlib_buffer_pool_t * vlib_get_buffer_pool(vlib_main_t *vm, u8 buffer_pool_index)
Definition: buffer_funcs.h:521
clib_memset(h->entries, 0, sizeof(h->entries[0]) *entries)
struct rte_pci_device * dpdk_get_pci_device(const struct rte_eth_dev_info *info)
Definition: common.c:246
u16 flags
Definition: dpdk.h:176
static vnet_hw_interface_t * vnet_get_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
clib_error_t * errors
Definition: dpdk.h:220
static vnet_sw_interface_t * vnet_get_sw_interface(vnet_main_t *vnm, u32 sw_if_index)
int dpdk_port_state_callback(dpdk_portid_t port_id, enum rte_eth_event_type type, void *param, void *ret_param)
Definition: common.c:236
#define vec_validate_aligned(V, I, A)
Make sure vector is long enough for given index (no header, specified alignment)
Definition: vec.h:518
unsigned char u8
Definition: types.h:56
#define dpdk_log_warn(...)
Definition: dpdk.h:404
dpdk_portid_t port_id
Definition: dpdk.h:165
#define clib_error_return(e, args...)
Definition: error.h:99
u16 rx_q_used
Definition: dpdk.h:189
unsigned int u32
Definition: types.h:88
void dpdk_device_setup(dpdk_device_t *xd)
Definition: common.c:39
struct rte_eth_conf port_conf
Definition: dpdk.h:193
struct rte_eth_txconf tx_conf
Definition: dpdk.h:194
vlib_worker_thread_t * vlib_worker_threads
Definition: threads.c:34
void dpdk_device_start(dpdk_device_t *xd)
Definition: common.c:160
static_always_inline uword vnet_get_device_input_thread_index(vnet_main_t *vnm, u32 hw_if_index, u16 queue_id)
Definition: devices.h:127
unsigned short u16
Definition: types.h:57
#define always_inline
Definition: ipsec.h:28
vnet_sw_interface_flags_t flags
Definition: interface.h:724
u16 tx_q_used
Definition: dpdk.h:188
u16 nb_rx_desc
Definition: dpdk.h:190
uint16_t dpdk_portid_t
Definition: dpdk.h:121
#define dpdk_log_info(...)
Definition: dpdk.h:408
vlib_main_t * vm
Definition: in2out_ed.c:1599
u32 hw_if_index
Definition: dpdk.h:167
static_always_inline uword vlib_get_thread_index(void)
Definition: threads.h:218
#define dpdk_log_err(...)
Definition: dpdk.h:402
dpdk_pmd_t pmd
Definition: dpdk.h:173
static int dpdk_port_state_callback_inline(dpdk_portid_t port_id, enum rte_eth_event_type type, void *param)
Definition: common.c:210
void dpdk_device_stop(dpdk_device_t *xd)
Definition: common.c:194
void dpdk_device_error(dpdk_device_t *xd, char *str, int rv)
Definition: common.c:30
#define ASSERT(truth)
format_function_t format_dpdk_device_name
Definition: dpdk.h:440
u8 data[128]
Definition: ipsec_types.api:89
struct rte_eth_link link
Definition: dpdk.h:207
static vlib_main_t * vlib_get_main(void)
Definition: global_funcs.h:23
vl_api_ip4_address_t hi
Definition: arp.api:37
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
clib_error_t * vnet_hw_interface_set_flags(vnet_main_t *vnm, u32 hw_if_index, vnet_hw_interface_flags_t flags)
Definition: interface.c:498
u64 uword
Definition: types.h:112
format_function_t format_dpdk_rx_offload_caps
Definition: dpdk.h:449
#define clib_error_free(e)
Definition: error.h:86
i8 cpu_socket
Definition: dpdk.h:174
struct rte_mempool ** dpdk_mempool_by_buffer_pool_index
Definition: buffer.c:33
u8 bus
Definition: pci_types.api:21
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:59
vnet_main_t * vnet_main
Definition: dpdk.h:344
u16 nb_tx_desc
Definition: dpdk.h:178
static u8 vlib_buffer_pool_get_default_for_numa(vlib_main_t *vm, u32 numa_node)
Definition: buffer_funcs.h:199
u8 * buffer_pool_for_queue
Definition: dpdk.h:192
CLIB vectors are ubiquitous dynamically resized arrays with by user defined "headers".