netdev.c (8320d145912738655cf631d27aa1829d8b17804e) netdev.c (e05b2d141fef22cfac1928cf0eb6890e5dae4216)
1/*
2 * Copyright (C) 2017 Netronome Systems, Inc.
3 *
4 * This software is licensed under the GNU General License Version 2,
5 * June 1991 as shown in the file COPYING in the top-level directory of this
6 * source tree.
7 *
8 * THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS"

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20#include <linux/netdevice.h>
21#include <linux/slab.h>
22#include <net/netlink.h>
23#include <net/pkt_cls.h>
24#include <net/rtnetlink.h>
25
26#include "netdevsim.h"
27
1/*
2 * Copyright (C) 2017 Netronome Systems, Inc.
3 *
4 * This software is licensed under the GNU General License Version 2,
5 * June 1991 as shown in the file COPYING in the top-level directory of this
6 * source tree.
7 *
8 * THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS"

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20#include <linux/netdevice.h>
21#include <linux/slab.h>
22#include <net/netlink.h>
23#include <net/pkt_cls.h>
24#include <net/rtnetlink.h>
25
26#include "netdevsim.h"
27
28static int nsim_get_port_parent_id(struct net_device *dev,
29 struct netdev_phys_item_id *ppid)
30{
31 struct netdevsim *ns = netdev_priv(dev);
32
33 memcpy(ppid, &ns->nsim_dev->switch_id, sizeof(*ppid));
34 return 0;
35}
36
37static int nsim_init(struct net_device *dev)
38{
39 struct netdevsim *ns = netdev_priv(dev);
40 char dev_link_name[32];
41 int err;
42
43 ns->ddir = debugfs_create_dir("0", ns->nsim_dev->ports_ddir);
44 if (IS_ERR_OR_NULL(ns->ddir))
45 return -ENOMEM;
46
47 sprintf(dev_link_name, "../../../" DRV_NAME "%u",
48 ns->nsim_dev->nsim_bus_dev->dev.id);
49 debugfs_create_symlink("dev", ns->ddir, dev_link_name);
50
51 err = nsim_bpf_init(ns);
52 if (err)
53 goto err_debugfs_destroy;
54
55 nsim_ipsec_init(ns);
56
57 return 0;
58
59err_debugfs_destroy:
60 debugfs_remove_recursive(ns->ddir);
61 return err;
62}
63
64static void nsim_uninit(struct net_device *dev)
65{
66 struct netdevsim *ns = netdev_priv(dev);
67
68 nsim_ipsec_teardown(ns);
69 debugfs_remove_recursive(ns->ddir);
70 nsim_bpf_uninit(ns);
71}
72
73static void nsim_free(struct net_device *dev)
74{
75 struct netdevsim *ns = netdev_priv(dev);
76
77 nsim_bus_dev_del(ns->nsim_bus_dev);
78 /* netdev and vf state will be freed out of device_release() */
79}
80
81static netdev_tx_t nsim_start_xmit(struct sk_buff *skb, struct net_device *dev)
82{
83 struct netdevsim *ns = netdev_priv(dev);
84
85 if (!nsim_ipsec_tx(ns, skb))
86 goto out;
87
88 u64_stats_update_begin(&ns->syncp);

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294
295 if ((dev->features & NETIF_F_HW_TC) > (features & NETIF_F_HW_TC))
296 return nsim_bpf_disable_tc(ns);
297
298 return 0;
299}
300
301static const struct net_device_ops nsim_netdev_ops = {
28static netdev_tx_t nsim_start_xmit(struct sk_buff *skb, struct net_device *dev)
29{
30 struct netdevsim *ns = netdev_priv(dev);
31
32 if (!nsim_ipsec_tx(ns, skb))
33 goto out;
34
35 u64_stats_update_begin(&ns->syncp);

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241
242 if ((dev->features & NETIF_F_HW_TC) > (features & NETIF_F_HW_TC))
243 return nsim_bpf_disable_tc(ns);
244
245 return 0;
246}
247
248static const struct net_device_ops nsim_netdev_ops = {
302 .ndo_init = nsim_init,
303 .ndo_uninit = nsim_uninit,
304 .ndo_start_xmit = nsim_start_xmit,
305 .ndo_set_rx_mode = nsim_set_rx_mode,
306 .ndo_set_mac_address = eth_mac_addr,
307 .ndo_validate_addr = eth_validate_addr,
308 .ndo_change_mtu = nsim_change_mtu,
309 .ndo_get_stats64 = nsim_get_stats64,
310 .ndo_set_vf_mac = nsim_set_vf_mac,
311 .ndo_set_vf_vlan = nsim_set_vf_vlan,
312 .ndo_set_vf_rate = nsim_set_vf_rate,
313 .ndo_set_vf_spoofchk = nsim_set_vf_spoofchk,
314 .ndo_set_vf_trust = nsim_set_vf_trust,
315 .ndo_get_vf_config = nsim_get_vf_config,
316 .ndo_set_vf_link_state = nsim_set_vf_link_state,
317 .ndo_set_vf_rss_query_en = nsim_set_vf_rss_query_en,
318 .ndo_setup_tc = nsim_setup_tc,
319 .ndo_set_features = nsim_set_features,
320 .ndo_bpf = nsim_bpf,
249 .ndo_start_xmit = nsim_start_xmit,
250 .ndo_set_rx_mode = nsim_set_rx_mode,
251 .ndo_set_mac_address = eth_mac_addr,
252 .ndo_validate_addr = eth_validate_addr,
253 .ndo_change_mtu = nsim_change_mtu,
254 .ndo_get_stats64 = nsim_get_stats64,
255 .ndo_set_vf_mac = nsim_set_vf_mac,
256 .ndo_set_vf_vlan = nsim_set_vf_vlan,
257 .ndo_set_vf_rate = nsim_set_vf_rate,
258 .ndo_set_vf_spoofchk = nsim_set_vf_spoofchk,
259 .ndo_set_vf_trust = nsim_set_vf_trust,
260 .ndo_get_vf_config = nsim_get_vf_config,
261 .ndo_set_vf_link_state = nsim_set_vf_link_state,
262 .ndo_set_vf_rss_query_en = nsim_set_vf_rss_query_en,
263 .ndo_setup_tc = nsim_setup_tc,
264 .ndo_set_features = nsim_set_features,
265 .ndo_bpf = nsim_bpf,
321 .ndo_get_port_parent_id = nsim_get_port_parent_id,
322};
323
324static void nsim_setup(struct net_device *dev)
325{
326 ether_setup(dev);
327 eth_hw_addr_random(dev);
328
266};
267
268static void nsim_setup(struct net_device *dev)
269{
270 ether_setup(dev);
271 eth_hw_addr_random(dev);
272
329 dev->netdev_ops = &nsim_netdev_ops;
330 dev->needs_free_netdev = true;
331 dev->priv_destructor = nsim_free;
332
333 dev->tx_queue_len = 0;
334 dev->flags |= IFF_NOARP;
335 dev->flags &= ~IFF_MULTICAST;
336 dev->priv_flags |= IFF_LIVE_ADDR_CHANGE |
337 IFF_NO_QUEUE;
338 dev->features |= NETIF_F_HIGHDMA |
339 NETIF_F_SG |
340 NETIF_F_FRAGLIST |
341 NETIF_F_HW_CSUM |
342 NETIF_F_TSO;
343 dev->hw_features |= NETIF_F_HW_TC;
344 dev->max_mtu = ETH_MAX_MTU;
345}
346
273 dev->tx_queue_len = 0;
274 dev->flags |= IFF_NOARP;
275 dev->flags &= ~IFF_MULTICAST;
276 dev->priv_flags |= IFF_LIVE_ADDR_CHANGE |
277 IFF_NO_QUEUE;
278 dev->features |= NETIF_F_HIGHDMA |
279 NETIF_F_SG |
280 NETIF_F_FRAGLIST |
281 NETIF_F_HW_CSUM |
282 NETIF_F_TSO;
283 dev->hw_features |= NETIF_F_HW_TC;
284 dev->max_mtu = ETH_MAX_MTU;
285}
286
347static int nsim_validate(struct nlattr *tb[], struct nlattr *data[],
348 struct netlink_ext_ack *extack)
287struct netdevsim *
288nsim_create(struct nsim_dev *nsim_dev, struct nsim_dev_port *nsim_dev_port)
349{
289{
350 if (tb[IFLA_ADDRESS]) {
351 if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
352 return -EINVAL;
353 if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
354 return -EADDRNOTAVAIL;
355 }
356 return 0;
357}
358
359static int nsim_newlink(struct net *src_net, struct net_device *dev,
360 struct nlattr *tb[], struct nlattr *data[],
361 struct netlink_ext_ack *extack)
362{
363 struct netdevsim *ns = netdev_priv(dev);
290 struct net_device *dev;
291 struct netdevsim *ns;
364 int err;
365
292 int err;
293
366 ns->netdev = dev;
367 ns->nsim_bus_dev = nsim_bus_dev_new_with_ns(ns);
368 if (IS_ERR(ns->nsim_bus_dev))
369 return PTR_ERR(ns->nsim_bus_dev);
294 dev = alloc_netdev(sizeof(*ns), "eth%d", NET_NAME_UNKNOWN, nsim_setup);
295 if (!dev)
296 return ERR_PTR(-ENOMEM);
370
297
298 ns = netdev_priv(dev);
299 ns->netdev = dev;
300 ns->nsim_dev = nsim_dev;
301 ns->nsim_dev_port = nsim_dev_port;
302 ns->nsim_bus_dev = nsim_dev->nsim_bus_dev;
371 SET_NETDEV_DEV(dev, &ns->nsim_bus_dev->dev);
303 SET_NETDEV_DEV(dev, &ns->nsim_bus_dev->dev);
304 dev->netdev_ops = &nsim_netdev_ops;
372
305
373 ns->nsim_dev = dev_get_drvdata(&ns->nsim_bus_dev->dev);
306 rtnl_lock();
307 err = nsim_bpf_init(ns);
308 if (err)
309 goto err_free_netdev;
374
310
311 nsim_ipsec_init(ns);
312
375 err = register_netdevice(dev);
376 if (err)
313 err = register_netdevice(dev);
314 if (err)
377 goto err_dev_del;
378 return 0;
315 goto err_ipsec_teardown;
316 rtnl_unlock();
379
317
380err_dev_del:
381 nsim_bus_dev_del(ns->nsim_bus_dev);
382 return err;
318 return ns;
319
320err_ipsec_teardown:
321 nsim_ipsec_teardown(ns);
322 nsim_bpf_uninit(ns);
323 rtnl_unlock();
324err_free_netdev:
325 free_netdev(dev);
326 return ERR_PTR(err);
383}
384
327}
328
329void nsim_destroy(struct netdevsim *ns)
330{
331 struct net_device *dev = ns->netdev;
332
333 rtnl_lock();
334 unregister_netdevice(dev);
335 nsim_ipsec_teardown(ns);
336 nsim_bpf_uninit(ns);
337 rtnl_unlock();
338 free_netdev(dev);
339}
340
341static int nsim_validate(struct nlattr *tb[], struct nlattr *data[],
342 struct netlink_ext_ack *extack)
343{
344 NL_SET_ERR_MSG_MOD(extack, "Please use: echo \"[ID] [PORT_COUNT]\" > /sys/bus/netdevsim/new_device");
345 return -EOPNOTSUPP;
346}
347
385static struct rtnl_link_ops nsim_link_ops __read_mostly = {
386 .kind = DRV_NAME,
348static struct rtnl_link_ops nsim_link_ops __read_mostly = {
349 .kind = DRV_NAME,
387 .priv_size = sizeof(struct netdevsim),
388 .setup = nsim_setup,
389 .validate = nsim_validate,
350 .validate = nsim_validate,
390 .newlink = nsim_newlink,
391};
392
393static int __init nsim_module_init(void)
394{
395 int err;
396
397 err = nsim_dev_init();
398 if (err)

--- 30 unchanged lines hidden --- 		351};
352
353static int __init nsim_module_init(void)
354{
355 int err;
356
357 err = nsim_dev_init();
358 if (err)

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