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85b4aa49 | 1 | /* |
af7f85d9 | 2 | * Copyright(c) 2007 - 2009 Intel Corporation. All rights reserved. |
85b4aa49 RL |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms and conditions of the GNU General Public License, | |
6 | * version 2, as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., | |
15 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | * | |
17 | * Maintained at www.Open-FCoE.org | |
18 | */ | |
19 | ||
20 | #include <linux/module.h> | |
85b4aa49 | 21 | #include <linux/spinlock.h> |
85b4aa49 RL |
22 | #include <linux/netdevice.h> |
23 | #include <linux/etherdevice.h> | |
24 | #include <linux/ethtool.h> | |
25 | #include <linux/if_ether.h> | |
26 | #include <linux/if_vlan.h> | |
85b4aa49 | 27 | #include <linux/crc32.h> |
5a0e3ad6 | 28 | #include <linux/slab.h> |
85b4aa49 RL |
29 | #include <linux/cpu.h> |
30 | #include <linux/fs.h> | |
31 | #include <linux/sysfs.h> | |
32 | #include <linux/ctype.h> | |
2ca32b48 | 33 | #include <linux/workqueue.h> |
6f6c2aa3 | 34 | #include <net/dcbnl.h> |
35 | #include <net/dcbevent.h> | |
85b4aa49 RL |
36 | #include <scsi/scsi_tcq.h> |
37 | #include <scsi/scsicam.h> | |
38 | #include <scsi/scsi_transport.h> | |
39 | #include <scsi/scsi_transport_fc.h> | |
40 | #include <net/rtnetlink.h> | |
41 | ||
42 | #include <scsi/fc/fc_encaps.h> | |
97c8389d | 43 | #include <scsi/fc/fc_fip.h> |
8d55e507 | 44 | #include <scsi/fc/fc_fcoe.h> |
85b4aa49 RL |
45 | |
46 | #include <scsi/libfc.h> | |
47 | #include <scsi/fc_frame.h> | |
48 | #include <scsi/libfcoe.h> | |
85b4aa49 | 49 | |
fdd78027 | 50 | #include "fcoe.h" |
7f349142 | 51 | |
85b4aa49 RL |
52 | MODULE_AUTHOR("Open-FCoE.org"); |
53 | MODULE_DESCRIPTION("FCoE"); | |
9b34ecff | 54 | MODULE_LICENSE("GPL v2"); |
85b4aa49 | 55 | |
05cc7390 | 56 | /* Performance tuning parameters for fcoe */ |
860eca2b | 57 | static unsigned int fcoe_ddp_min = 4096; |
05cc7390 YZ |
58 | module_param_named(ddp_min, fcoe_ddp_min, uint, S_IRUGO | S_IWUSR); |
59 | MODULE_PARM_DESC(ddp_min, "Minimum I/O size in bytes for " \ | |
60 | "Direct Data Placement (DDP)."); | |
61 | ||
7c9c6841 BVA |
62 | unsigned int fcoe_debug_logging; |
63 | module_param_named(debug_logging, fcoe_debug_logging, int, S_IRUGO|S_IWUSR); | |
64 | MODULE_PARM_DESC(debug_logging, "a bit mask of logging levels"); | |
65 | ||
66 | static DEFINE_MUTEX(fcoe_config_mutex); | |
dfc1d0fe | 67 | |
2ca32b48 TH |
68 | static struct workqueue_struct *fcoe_wq; |
69 | ||
85b4aa49 | 70 | /* fcoe host list */ |
090eb6c4 | 71 | /* must only by accessed under the RTNL mutex */ |
7c9c6841 BVA |
72 | static LIST_HEAD(fcoe_hostlist); |
73 | static DEFINE_PER_CPU(struct fcoe_percpu_s, fcoe_percpu); | |
85b4aa49 | 74 | |
dd3fd72e | 75 | /* Function Prototypes */ |
1875f27e | 76 | static int fcoe_reset(struct Scsi_Host *); |
fdd78027 VD |
77 | static int fcoe_xmit(struct fc_lport *, struct fc_frame *); |
78 | static int fcoe_rcv(struct sk_buff *, struct net_device *, | |
79 | struct packet_type *, struct net_device *); | |
1875f27e RL |
80 | static void fcoe_percpu_clean(struct fc_lport *); |
81 | static int fcoe_link_ok(struct fc_lport *); | |
fdd78027 VD |
82 | |
83 | static struct fc_lport *fcoe_hostlist_lookup(const struct net_device *); | |
84 | static int fcoe_hostlist_add(const struct fc_lport *); | |
f9184df3 | 85 | static void fcoe_hostlist_del(const struct fc_lport *); |
fdd78027 | 86 | |
85b4aa49 RL |
87 | static int fcoe_device_notification(struct notifier_block *, ulong, void *); |
88 | static void fcoe_dev_setup(void); | |
89 | static void fcoe_dev_cleanup(void); | |
1875f27e RL |
90 | static struct fcoe_interface |
91 | *fcoe_hostlist_lookup_port(const struct net_device *); | |
92 | ||
93 | static int fcoe_fip_recv(struct sk_buff *, struct net_device *, | |
94 | struct packet_type *, struct net_device *); | |
d242e668 HR |
95 | static int fcoe_fip_vlan_recv(struct sk_buff *, struct net_device *, |
96 | struct packet_type *, struct net_device *); | |
1875f27e RL |
97 | |
98 | static void fcoe_fip_send(struct fcoe_ctlr *, struct sk_buff *); | |
99 | static void fcoe_update_src_mac(struct fc_lport *, u8 *); | |
100 | static u8 *fcoe_get_src_mac(struct fc_lport *); | |
101 | static void fcoe_destroy_work(struct work_struct *); | |
102 | ||
103 | static int fcoe_ddp_setup(struct fc_lport *, u16, struct scatterlist *, | |
104 | unsigned int); | |
105 | static int fcoe_ddp_done(struct fc_lport *, u16); | |
71f89491 YZ |
106 | static int fcoe_ddp_target(struct fc_lport *, u16, struct scatterlist *, |
107 | unsigned int); | |
6f6c2aa3 | 108 | static int fcoe_dcb_app_notification(struct notifier_block *notifier, |
109 | ulong event, void *ptr); | |
1875f27e | 110 | |
78a58246 | 111 | static bool fcoe_match(struct net_device *netdev); |
1917d42d | 112 | static int fcoe_create(struct net_device *netdev, enum fip_mode fip_mode); |
78a58246 YZ |
113 | static int fcoe_destroy(struct net_device *netdev); |
114 | static int fcoe_enable(struct net_device *netdev); | |
115 | static int fcoe_disable(struct net_device *netdev); | |
1875f27e | 116 | |
435c8667 RL |
117 | /* fcoe_syfs control interface handlers */ |
118 | static int fcoe_ctlr_alloc(struct net_device *netdev); | |
119 | static int fcoe_ctlr_enabled(struct fcoe_ctlr_device *cdev); | |
a87dccc7 | 120 | static void fcoe_ctlr_mode(struct fcoe_ctlr_device *ctlr_dev); |
435c8667 | 121 | |
1875f27e RL |
122 | static struct fc_seq *fcoe_elsct_send(struct fc_lport *, |
123 | u32 did, struct fc_frame *, | |
124 | unsigned int op, | |
125 | void (*resp)(struct fc_seq *, | |
126 | struct fc_frame *, | |
127 | void *), | |
128 | void *, u32 timeout); | |
859b7b64 | 129 | static void fcoe_recv_frame(struct sk_buff *skb); |
1875f27e | 130 | |
1875f27e | 131 | /* notification function for packets from net device */ |
85b4aa49 RL |
132 | static struct notifier_block fcoe_notifier = { |
133 | .notifier_call = fcoe_device_notification, | |
134 | }; | |
135 | ||
6f6c2aa3 | 136 | /* notification function for DCB events */ |
137 | static struct notifier_block dcb_notifier = { | |
138 | .notifier_call = fcoe_dcb_app_notification, | |
139 | }; | |
140 | ||
8ca86f84 YZ |
141 | static struct scsi_transport_template *fcoe_nport_scsi_transport; |
142 | static struct scsi_transport_template *fcoe_vport_scsi_transport; | |
7f349142 | 143 | |
1875f27e RL |
144 | static int fcoe_vport_destroy(struct fc_vport *); |
145 | static int fcoe_vport_create(struct fc_vport *, bool disabled); | |
146 | static int fcoe_vport_disable(struct fc_vport *, bool disable); | |
147 | static void fcoe_set_vport_symbolic_name(struct fc_vport *); | |
7d65b0df | 148 | static void fcoe_set_port_id(struct fc_lport *, u32, struct fc_frame *); |
8d55e507 RL |
149 | static void fcoe_fcf_get_vlan_id(struct fcoe_fcf_device *); |
150 | ||
a87dccc7 | 151 | |
8d55e507 | 152 | static struct fcoe_sysfs_function_template fcoe_sysfs_templ = { |
a87dccc7 | 153 | .set_fcoe_ctlr_mode = fcoe_ctlr_mode, |
435c8667 | 154 | .set_fcoe_ctlr_enabled = fcoe_ctlr_enabled, |
8d55e507 RL |
155 | .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb, |
156 | .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb, | |
157 | .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb, | |
158 | .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb, | |
159 | .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb, | |
160 | .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb, | |
161 | ||
162 | .get_fcoe_fcf_selected = fcoe_fcf_get_selected, | |
163 | .get_fcoe_fcf_vlan_id = fcoe_fcf_get_vlan_id, | |
164 | }; | |
1875f27e RL |
165 | |
166 | static struct libfc_function_template fcoe_libfc_fcn_templ = { | |
167 | .frame_send = fcoe_xmit, | |
168 | .ddp_setup = fcoe_ddp_setup, | |
169 | .ddp_done = fcoe_ddp_done, | |
71f89491 | 170 | .ddp_target = fcoe_ddp_target, |
1875f27e | 171 | .elsct_send = fcoe_elsct_send, |
b84056bf | 172 | .get_lesb = fcoe_get_lesb, |
7d65b0df | 173 | .lport_set_port_id = fcoe_set_port_id, |
1875f27e | 174 | }; |
9a05753b | 175 | |
7c9c6841 | 176 | static struct fc_function_template fcoe_nport_fc_functions = { |
7f349142 VD |
177 | .show_host_node_name = 1, |
178 | .show_host_port_name = 1, | |
179 | .show_host_supported_classes = 1, | |
180 | .show_host_supported_fc4s = 1, | |
181 | .show_host_active_fc4s = 1, | |
182 | .show_host_maxframe_size = 1, | |
9f71af2f NP |
183 | .show_host_serial_number = 1, |
184 | .show_host_manufacturer = 1, | |
185 | .show_host_model = 1, | |
186 | .show_host_model_description = 1, | |
187 | .show_host_hardware_version = 1, | |
188 | .show_host_driver_version = 1, | |
189 | .show_host_firmware_version = 1, | |
190 | .show_host_optionrom_version = 1, | |
7f349142 VD |
191 | |
192 | .show_host_port_id = 1, | |
193 | .show_host_supported_speeds = 1, | |
194 | .get_host_speed = fc_get_host_speed, | |
195 | .show_host_speed = 1, | |
196 | .show_host_port_type = 1, | |
197 | .get_host_port_state = fc_get_host_port_state, | |
198 | .show_host_port_state = 1, | |
199 | .show_host_symbolic_name = 1, | |
200 | ||
201 | .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv), | |
202 | .show_rport_maxframe_size = 1, | |
203 | .show_rport_supported_classes = 1, | |
204 | ||
205 | .show_host_fabric_name = 1, | |
206 | .show_starget_node_name = 1, | |
207 | .show_starget_port_name = 1, | |
208 | .show_starget_port_id = 1, | |
209 | .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, | |
210 | .show_rport_dev_loss_tmo = 1, | |
211 | .get_fc_host_stats = fc_get_host_stats, | |
212 | .issue_fc_host_lip = fcoe_reset, | |
213 | ||
214 | .terminate_rport_io = fc_rport_terminate_io, | |
9a05753b CL |
215 | |
216 | .vport_create = fcoe_vport_create, | |
217 | .vport_delete = fcoe_vport_destroy, | |
218 | .vport_disable = fcoe_vport_disable, | |
dc8596d3 | 219 | .set_vport_symbolic_name = fcoe_set_vport_symbolic_name, |
a51ab396 SM |
220 | |
221 | .bsg_request = fc_lport_bsg_request, | |
7f349142 VD |
222 | }; |
223 | ||
7c9c6841 | 224 | static struct fc_function_template fcoe_vport_fc_functions = { |
e9084bb8 CL |
225 | .show_host_node_name = 1, |
226 | .show_host_port_name = 1, | |
227 | .show_host_supported_classes = 1, | |
228 | .show_host_supported_fc4s = 1, | |
229 | .show_host_active_fc4s = 1, | |
230 | .show_host_maxframe_size = 1, | |
7e5adcfb NP |
231 | .show_host_serial_number = 1, |
232 | .show_host_manufacturer = 1, | |
233 | .show_host_model = 1, | |
234 | .show_host_model_description = 1, | |
235 | .show_host_hardware_version = 1, | |
236 | .show_host_driver_version = 1, | |
237 | .show_host_firmware_version = 1, | |
238 | .show_host_optionrom_version = 1, | |
e9084bb8 CL |
239 | |
240 | .show_host_port_id = 1, | |
241 | .show_host_supported_speeds = 1, | |
242 | .get_host_speed = fc_get_host_speed, | |
243 | .show_host_speed = 1, | |
244 | .show_host_port_type = 1, | |
245 | .get_host_port_state = fc_get_host_port_state, | |
246 | .show_host_port_state = 1, | |
247 | .show_host_symbolic_name = 1, | |
248 | ||
249 | .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv), | |
250 | .show_rport_maxframe_size = 1, | |
251 | .show_rport_supported_classes = 1, | |
252 | ||
253 | .show_host_fabric_name = 1, | |
254 | .show_starget_node_name = 1, | |
255 | .show_starget_port_name = 1, | |
256 | .show_starget_port_id = 1, | |
257 | .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, | |
258 | .show_rport_dev_loss_tmo = 1, | |
259 | .get_fc_host_stats = fc_get_host_stats, | |
260 | .issue_fc_host_lip = fcoe_reset, | |
261 | ||
262 | .terminate_rport_io = fc_rport_terminate_io, | |
a51ab396 SM |
263 | |
264 | .bsg_request = fc_lport_bsg_request, | |
e9084bb8 CL |
265 | }; |
266 | ||
7f349142 VD |
267 | static struct scsi_host_template fcoe_shost_template = { |
268 | .module = THIS_MODULE, | |
269 | .name = "FCoE Driver", | |
270 | .proc_name = FCOE_NAME, | |
271 | .queuecommand = fc_queuecommand, | |
272 | .eh_abort_handler = fc_eh_abort, | |
273 | .eh_device_reset_handler = fc_eh_device_reset, | |
274 | .eh_host_reset_handler = fc_eh_host_reset, | |
275 | .slave_alloc = fc_slave_alloc, | |
db5ed4df | 276 | .change_queue_depth = scsi_change_queue_depth, |
7f349142 | 277 | .this_id = -1, |
14caf44c | 278 | .cmd_per_lun = 3, |
7f349142 VD |
279 | .can_queue = FCOE_MAX_OUTSTANDING_COMMANDS, |
280 | .use_clustering = ENABLE_CLUSTERING, | |
281 | .sg_tablesize = SG_ALL, | |
282 | .max_sectors = 0xffff, | |
c40ecc12 | 283 | .track_queue_depth = 1, |
7f349142 VD |
284 | }; |
285 | ||
54b649f8 | 286 | /** |
1875f27e RL |
287 | * fcoe_interface_setup() - Setup a FCoE interface |
288 | * @fcoe: The new FCoE interface | |
289 | * @netdev: The net device that the fcoe interface is on | |
54b649f8 CL |
290 | * |
291 | * Returns : 0 for success | |
2e70e241 | 292 | * Locking: must be called with the RTNL mutex held |
54b649f8 CL |
293 | */ |
294 | static int fcoe_interface_setup(struct fcoe_interface *fcoe, | |
295 | struct net_device *netdev) | |
296 | { | |
619fe4be | 297 | struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe); |
54b649f8 | 298 | struct netdev_hw_addr *ha; |
5bab87e6 | 299 | struct net_device *real_dev; |
54b649f8 | 300 | u8 flogi_maddr[ETH_ALEN]; |
b7a727f1 | 301 | const struct net_device_ops *ops; |
54b649f8 CL |
302 | |
303 | fcoe->netdev = netdev; | |
304 | ||
b7a727f1 YZ |
305 | /* Let LLD initialize for FCoE */ |
306 | ops = netdev->netdev_ops; | |
307 | if (ops->ndo_fcoe_enable) { | |
308 | if (ops->ndo_fcoe_enable(netdev)) | |
309 | FCOE_NETDEV_DBG(netdev, "Failed to enable FCoE" | |
310 | " specific feature for LLD.\n"); | |
311 | } | |
312 | ||
54b649f8 | 313 | /* Do not support for bonding device */ |
cc8bdf06 | 314 | if (netdev->priv_flags & IFF_BONDING && netdev->flags & IFF_MASTER) { |
59d92516 | 315 | FCOE_NETDEV_DBG(netdev, "Bonded interfaces not supported\n"); |
54b649f8 CL |
316 | return -EOPNOTSUPP; |
317 | } | |
318 | ||
319 | /* look for SAN MAC address, if multiple SAN MACs exist, only | |
320 | * use the first one for SPMA */ | |
5bab87e6 YZ |
321 | real_dev = (netdev->priv_flags & IFF_802_1Q_VLAN) ? |
322 | vlan_dev_real_dev(netdev) : netdev; | |
d1483bb9 | 323 | fcoe->realdev = real_dev; |
54b649f8 | 324 | rcu_read_lock(); |
5bab87e6 | 325 | for_each_dev_addr(real_dev, ha) { |
54b649f8 | 326 | if ((ha->type == NETDEV_HW_ADDR_T_SAN) && |
bf361707 | 327 | (is_valid_ether_addr(ha->addr))) { |
54b649f8 CL |
328 | memcpy(fip->ctl_src_addr, ha->addr, ETH_ALEN); |
329 | fip->spma = 1; | |
330 | break; | |
331 | } | |
332 | } | |
333 | rcu_read_unlock(); | |
334 | ||
335 | /* setup Source Mac Address */ | |
336 | if (!fip->spma) | |
337 | memcpy(fip->ctl_src_addr, netdev->dev_addr, netdev->addr_len); | |
338 | ||
339 | /* | |
340 | * Add FCoE MAC address as second unicast MAC address | |
341 | * or enter promiscuous mode if not capable of listening | |
342 | * for multiple unicast MACs. | |
343 | */ | |
54b649f8 | 344 | memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN); |
a748ee24 | 345 | dev_uc_add(netdev, flogi_maddr); |
54b649f8 | 346 | if (fip->spma) |
a748ee24 | 347 | dev_uc_add(netdev, fip->ctl_src_addr); |
e10f8c66 JE |
348 | if (fip->mode == FIP_MODE_VN2VN) { |
349 | dev_mc_add(netdev, FIP_ALL_VN2VN_MACS); | |
350 | dev_mc_add(netdev, FIP_ALL_P2P_MACS); | |
351 | } else | |
352 | dev_mc_add(netdev, FIP_ALL_ENODE_MACS); | |
54b649f8 CL |
353 | |
354 | /* | |
355 | * setup the receive function from ethernet driver | |
356 | * on the ethertype for the given device | |
357 | */ | |
358 | fcoe->fcoe_packet_type.func = fcoe_rcv; | |
420fa211 | 359 | fcoe->fcoe_packet_type.type = htons(ETH_P_FCOE); |
54b649f8 CL |
360 | fcoe->fcoe_packet_type.dev = netdev; |
361 | dev_add_pack(&fcoe->fcoe_packet_type); | |
362 | ||
363 | fcoe->fip_packet_type.func = fcoe_fip_recv; | |
364 | fcoe->fip_packet_type.type = htons(ETH_P_FIP); | |
365 | fcoe->fip_packet_type.dev = netdev; | |
366 | dev_add_pack(&fcoe->fip_packet_type); | |
367 | ||
d242e668 HR |
368 | if (netdev != real_dev) { |
369 | fcoe->fip_vlan_packet_type.func = fcoe_fip_vlan_recv; | |
370 | fcoe->fip_vlan_packet_type.type = htons(ETH_P_FIP); | |
371 | fcoe->fip_vlan_packet_type.dev = real_dev; | |
372 | dev_add_pack(&fcoe->fip_vlan_packet_type); | |
373 | } | |
54b649f8 CL |
374 | return 0; |
375 | } | |
376 | ||
030f4e00 | 377 | /** |
1875f27e RL |
378 | * fcoe_interface_create() - Create a FCoE interface on a net device |
379 | * @netdev: The net device to create the FCoE interface on | |
1dd454d9 | 380 | * @fip_mode: The mode to use for FIP |
030f4e00 CL |
381 | * |
382 | * Returns: pointer to a struct fcoe_interface or NULL on error | |
383 | */ | |
1dd454d9 JE |
384 | static struct fcoe_interface *fcoe_interface_create(struct net_device *netdev, |
385 | enum fip_state fip_mode) | |
030f4e00 | 386 | { |
8d55e507 | 387 | struct fcoe_ctlr_device *ctlr_dev; |
619fe4be | 388 | struct fcoe_ctlr *ctlr; |
030f4e00 | 389 | struct fcoe_interface *fcoe; |
619fe4be | 390 | int size; |
59d92516 | 391 | int err; |
030f4e00 | 392 | |
7287fb91 RL |
393 | if (!try_module_get(THIS_MODULE)) { |
394 | FCOE_NETDEV_DBG(netdev, | |
395 | "Could not get a reference to the module\n"); | |
396 | fcoe = ERR_PTR(-EBUSY); | |
397 | goto out; | |
398 | } | |
399 | ||
619fe4be | 400 | size = sizeof(struct fcoe_ctlr) + sizeof(struct fcoe_interface); |
8d55e507 RL |
401 | ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &fcoe_sysfs_templ, |
402 | size); | |
403 | if (!ctlr_dev) { | |
404 | FCOE_DBG("Failed to add fcoe_ctlr_device\n"); | |
7287fb91 | 405 | fcoe = ERR_PTR(-ENOMEM); |
6f68794c | 406 | goto out_putmod; |
030f4e00 CL |
407 | } |
408 | ||
8d55e507 | 409 | ctlr = fcoe_ctlr_device_priv(ctlr_dev); |
9d34876f | 410 | ctlr->cdev = ctlr_dev; |
8d55e507 RL |
411 | fcoe = fcoe_ctlr_priv(ctlr); |
412 | ||
2e70e241 | 413 | dev_hold(netdev); |
54b649f8 CL |
414 | |
415 | /* | |
416 | * Initialize FIP. | |
417 | */ | |
619fe4be RL |
418 | fcoe_ctlr_init(ctlr, fip_mode); |
419 | ctlr->send = fcoe_fip_send; | |
420 | ctlr->update_mac = fcoe_update_src_mac; | |
421 | ctlr->get_src_addr = fcoe_get_src_mac; | |
54b649f8 | 422 | |
59d92516 | 423 | err = fcoe_interface_setup(fcoe, netdev); |
424 | if (err) { | |
619fe4be | 425 | fcoe_ctlr_destroy(ctlr); |
8d55e507 | 426 | fcoe_ctlr_device_delete(ctlr_dev); |
59d92516 | 427 | dev_put(netdev); |
7287fb91 | 428 | fcoe = ERR_PTR(err); |
6f68794c | 429 | goto out_putmod; |
59d92516 | 430 | } |
030f4e00 | 431 | |
7287fb91 RL |
432 | goto out; |
433 | ||
6f68794c | 434 | out_putmod: |
7287fb91 RL |
435 | module_put(THIS_MODULE); |
436 | out: | |
030f4e00 CL |
437 | return fcoe; |
438 | } | |
439 | ||
54b649f8 | 440 | /** |
433eba04 | 441 | * fcoe_interface_remove() - remove FCoE interface from netdev |
1875f27e | 442 | * @fcoe: The FCoE interface to be cleaned up |
2e70e241 CL |
443 | * |
444 | * Caller must be holding the RTNL mutex | |
54b649f8 | 445 | */ |
433eba04 | 446 | static void fcoe_interface_remove(struct fcoe_interface *fcoe) |
54b649f8 CL |
447 | { |
448 | struct net_device *netdev = fcoe->netdev; | |
619fe4be | 449 | struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe); |
54b649f8 | 450 | u8 flogi_maddr[ETH_ALEN]; |
b7a727f1 | 451 | const struct net_device_ops *ops; |
54b649f8 CL |
452 | |
453 | /* | |
454 | * Don't listen for Ethernet packets anymore. | |
455 | * synchronize_net() ensures that the packet handlers are not running | |
456 | * on another CPU. dev_remove_pack() would do that, this calls the | |
457 | * unsyncronized version __dev_remove_pack() to avoid multiple delays. | |
458 | */ | |
459 | __dev_remove_pack(&fcoe->fcoe_packet_type); | |
460 | __dev_remove_pack(&fcoe->fip_packet_type); | |
d242e668 HR |
461 | if (netdev != fcoe->realdev) |
462 | __dev_remove_pack(&fcoe->fip_vlan_packet_type); | |
54b649f8 CL |
463 | synchronize_net(); |
464 | ||
54b649f8 | 465 | /* Delete secondary MAC addresses */ |
54b649f8 | 466 | memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN); |
a748ee24 | 467 | dev_uc_del(netdev, flogi_maddr); |
54b649f8 | 468 | if (fip->spma) |
a748ee24 | 469 | dev_uc_del(netdev, fip->ctl_src_addr); |
e10f8c66 JE |
470 | if (fip->mode == FIP_MODE_VN2VN) { |
471 | dev_mc_del(netdev, FIP_ALL_VN2VN_MACS); | |
472 | dev_mc_del(netdev, FIP_ALL_P2P_MACS); | |
473 | } else | |
474 | dev_mc_del(netdev, FIP_ALL_ENODE_MACS); | |
b7a727f1 YZ |
475 | |
476 | /* Tell the LLD we are done w/ FCoE */ | |
477 | ops = netdev->netdev_ops; | |
478 | if (ops->ndo_fcoe_disable) { | |
479 | if (ops->ndo_fcoe_disable(netdev)) | |
480 | FCOE_NETDEV_DBG(netdev, "Failed to disable FCoE" | |
481 | " specific feature for LLD.\n"); | |
482 | } | |
433eba04 VD |
483 | fcoe->removed = 1; |
484 | } | |
485 | ||
486 | ||
487 | /** | |
488 | * fcoe_interface_cleanup() - Clean up a FCoE interface | |
489 | * @fcoe: The FCoE interface to be cleaned up | |
490 | */ | |
491 | static void fcoe_interface_cleanup(struct fcoe_interface *fcoe) | |
492 | { | |
493 | struct net_device *netdev = fcoe->netdev; | |
619fe4be | 494 | struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe); |
b2085a4e | 495 | |
433eba04 VD |
496 | rtnl_lock(); |
497 | if (!fcoe->removed) | |
498 | fcoe_interface_remove(fcoe); | |
848e7d5b RL |
499 | rtnl_unlock(); |
500 | ||
b2085a4e | 501 | /* Release the self-reference taken during fcoe_interface_create() */ |
1a8ef414 RL |
502 | /* tear-down the FCoE controller */ |
503 | fcoe_ctlr_destroy(fip); | |
619fe4be | 504 | scsi_host_put(fip->lp->host); |
1a8ef414 RL |
505 | dev_put(netdev); |
506 | module_put(THIS_MODULE); | |
030f4e00 CL |
507 | } |
508 | ||
ab6b85c1 | 509 | /** |
1875f27e RL |
510 | * fcoe_fip_recv() - Handler for received FIP frames |
511 | * @skb: The receive skb | |
512 | * @netdev: The associated net device | |
513 | * @ptype: The packet_type structure which was used to register this handler | |
514 | * @orig_dev: The original net_device the the skb was received on. | |
515 | * (in case dev is a bond) | |
ab6b85c1 VD |
516 | * |
517 | * Returns: 0 for success | |
518 | */ | |
1875f27e | 519 | static int fcoe_fip_recv(struct sk_buff *skb, struct net_device *netdev, |
ab6b85c1 VD |
520 | struct packet_type *ptype, |
521 | struct net_device *orig_dev) | |
522 | { | |
259ad85d | 523 | struct fcoe_interface *fcoe; |
619fe4be | 524 | struct fcoe_ctlr *ctlr; |
ab6b85c1 | 525 | |
259ad85d | 526 | fcoe = container_of(ptype, struct fcoe_interface, fip_packet_type); |
619fe4be RL |
527 | ctlr = fcoe_to_ctlr(fcoe); |
528 | fcoe_ctlr_recv(ctlr, skb); | |
ab6b85c1 VD |
529 | return 0; |
530 | } | |
531 | ||
d242e668 HR |
532 | /** |
533 | * fcoe_fip_vlan_recv() - Handler for received FIP VLAN discovery frames | |
534 | * @skb: The receive skb | |
535 | * @netdev: The associated net device | |
536 | * @ptype: The packet_type structure which was used to register this handler | |
537 | * @orig_dev: The original net_device the the skb was received on. | |
538 | * (in case dev is a bond) | |
539 | * | |
540 | * Returns: 0 for success | |
541 | */ | |
542 | static int fcoe_fip_vlan_recv(struct sk_buff *skb, struct net_device *netdev, | |
543 | struct packet_type *ptype, | |
544 | struct net_device *orig_dev) | |
545 | { | |
546 | struct fcoe_interface *fcoe; | |
547 | struct fcoe_ctlr *ctlr; | |
548 | ||
549 | fcoe = container_of(ptype, struct fcoe_interface, fip_vlan_packet_type); | |
550 | ctlr = fcoe_to_ctlr(fcoe); | |
551 | fcoe_ctlr_recv(ctlr, skb); | |
552 | return 0; | |
553 | } | |
554 | ||
980f5156 VD |
555 | /** |
556 | * fcoe_port_send() - Send an Ethernet-encapsulated FIP/FCoE frame | |
557 | * @port: The FCoE port | |
558 | * @skb: The FIP/FCoE packet to be sent | |
559 | */ | |
560 | static void fcoe_port_send(struct fcoe_port *port, struct sk_buff *skb) | |
561 | { | |
562 | if (port->fcoe_pending_queue.qlen) | |
563 | fcoe_check_wait_queue(port->lport, skb); | |
564 | else if (fcoe_start_io(skb)) | |
565 | fcoe_check_wait_queue(port->lport, skb); | |
566 | } | |
567 | ||
ab6b85c1 | 568 | /** |
1875f27e RL |
569 | * fcoe_fip_send() - Send an Ethernet-encapsulated FIP frame |
570 | * @fip: The FCoE controller | |
571 | * @skb: The FIP packet to be sent | |
ab6b85c1 VD |
572 | */ |
573 | static void fcoe_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) | |
574 | { | |
d242e668 HR |
575 | struct fcoe_interface *fcoe = fcoe_from_ctlr(fip); |
576 | struct fip_frame { | |
577 | struct ethhdr eth; | |
578 | struct fip_header fip; | |
579 | } __packed *frame; | |
580 | ||
581 | /* | |
582 | * Use default VLAN for FIP VLAN discovery protocol | |
583 | */ | |
584 | frame = (struct fip_frame *)skb->data; | |
585 | if (frame->fip.fip_op == ntohs(FIP_OP_VLAN) && | |
586 | fcoe->realdev != fcoe->netdev) | |
587 | skb->dev = fcoe->realdev; | |
588 | else | |
589 | skb->dev = fcoe->netdev; | |
980f5156 | 590 | fcoe_port_send(lport_priv(fip->lp), skb); |
ab6b85c1 VD |
591 | } |
592 | ||
593 | /** | |
1875f27e RL |
594 | * fcoe_update_src_mac() - Update the Ethernet MAC filters |
595 | * @lport: The local port to update the source MAC on | |
596 | * @addr: Unicast MAC address to add | |
ab6b85c1 VD |
597 | * |
598 | * Remove any previously-set unicast MAC filter. | |
599 | * Add secondary FCoE MAC address filter for our OUI. | |
600 | */ | |
11b56188 | 601 | static void fcoe_update_src_mac(struct fc_lport *lport, u8 *addr) |
ab6b85c1 | 602 | { |
11b56188 | 603 | struct fcoe_port *port = lport_priv(lport); |
8597ae8b | 604 | struct fcoe_interface *fcoe = port->priv; |
25024989 | 605 | |
11b56188 | 606 | if (!is_zero_ether_addr(port->data_src_addr)) |
a748ee24 | 607 | dev_uc_del(fcoe->netdev, port->data_src_addr); |
11b56188 | 608 | if (!is_zero_ether_addr(addr)) |
a748ee24 | 609 | dev_uc_add(fcoe->netdev, addr); |
11b56188 | 610 | memcpy(port->data_src_addr, addr, ETH_ALEN); |
ab6b85c1 VD |
611 | } |
612 | ||
11b56188 CL |
613 | /** |
614 | * fcoe_get_src_mac() - return the Ethernet source address for an lport | |
615 | * @lport: libfc lport | |
616 | */ | |
617 | static u8 *fcoe_get_src_mac(struct fc_lport *lport) | |
618 | { | |
619 | struct fcoe_port *port = lport_priv(lport); | |
620 | ||
621 | return port->data_src_addr; | |
622 | } | |
623 | ||
7f349142 | 624 | /** |
1875f27e RL |
625 | * fcoe_lport_config() - Set up a local port |
626 | * @lport: The local port to be setup | |
7f349142 VD |
627 | * |
628 | * Returns: 0 for success | |
629 | */ | |
1875f27e | 630 | static int fcoe_lport_config(struct fc_lport *lport) |
7f349142 | 631 | { |
1875f27e RL |
632 | lport->link_up = 0; |
633 | lport->qfull = 0; | |
634 | lport->max_retry_count = 3; | |
635 | lport->max_rport_retry_count = 3; | |
636 | lport->e_d_tov = 2 * 1000; /* FC-FS default */ | |
637 | lport->r_a_tov = 2 * 2 * 1000; | |
638 | lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | | |
639 | FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); | |
640 | lport->does_npiv = 1; | |
641 | ||
642 | fc_lport_init_stats(lport); | |
7f349142 VD |
643 | |
644 | /* lport fc_lport related configuration */ | |
1875f27e | 645 | fc_lport_config(lport); |
7f349142 VD |
646 | |
647 | /* offload related configuration */ | |
1875f27e RL |
648 | lport->crc_offload = 0; |
649 | lport->seq_offload = 0; | |
650 | lport->lro_enabled = 0; | |
651 | lport->lro_xid = 0; | |
652 | lport->lso_max = 0; | |
7f349142 VD |
653 | |
654 | return 0; | |
655 | } | |
656 | ||
54a5b21d YZ |
657 | /** |
658 | * fcoe_netdev_features_change - Updates the lport's offload flags based | |
659 | * on the LLD netdev's FCoE feature flags | |
660 | */ | |
661 | static void fcoe_netdev_features_change(struct fc_lport *lport, | |
662 | struct net_device *netdev) | |
663 | { | |
664 | mutex_lock(&lport->lp_mutex); | |
665 | ||
666 | if (netdev->features & NETIF_F_SG) | |
667 | lport->sg_supp = 1; | |
668 | else | |
669 | lport->sg_supp = 0; | |
670 | ||
671 | if (netdev->features & NETIF_F_FCOE_CRC) { | |
672 | lport->crc_offload = 1; | |
673 | FCOE_NETDEV_DBG(netdev, "Supports FCCRC offload\n"); | |
674 | } else { | |
675 | lport->crc_offload = 0; | |
676 | } | |
677 | ||
678 | if (netdev->features & NETIF_F_FSO) { | |
679 | lport->seq_offload = 1; | |
680 | lport->lso_max = netdev->gso_max_size; | |
681 | FCOE_NETDEV_DBG(netdev, "Supports LSO for max len 0x%x\n", | |
682 | lport->lso_max); | |
683 | } else { | |
684 | lport->seq_offload = 0; | |
685 | lport->lso_max = 0; | |
686 | } | |
687 | ||
688 | if (netdev->fcoe_ddp_xid) { | |
689 | lport->lro_enabled = 1; | |
690 | lport->lro_xid = netdev->fcoe_ddp_xid; | |
691 | FCOE_NETDEV_DBG(netdev, "Supports LRO for max xid 0x%x\n", | |
692 | lport->lro_xid); | |
693 | } else { | |
694 | lport->lro_enabled = 0; | |
695 | lport->lro_xid = 0; | |
696 | } | |
697 | ||
698 | mutex_unlock(&lport->lp_mutex); | |
699 | } | |
700 | ||
7f349142 | 701 | /** |
1875f27e RL |
702 | * fcoe_netdev_config() - Set up net devive for SW FCoE |
703 | * @lport: The local port that is associated with the net device | |
704 | * @netdev: The associated net device | |
7f349142 | 705 | * |
1875f27e | 706 | * Must be called after fcoe_lport_config() as it will use local port mutex |
7f349142 | 707 | * |
1875f27e | 708 | * Returns: 0 for success |
7f349142 | 709 | */ |
1875f27e | 710 | static int fcoe_netdev_config(struct fc_lport *lport, struct net_device *netdev) |
7f349142 VD |
711 | { |
712 | u32 mfs; | |
713 | u64 wwnn, wwpn; | |
25024989 | 714 | struct fcoe_interface *fcoe; |
619fe4be | 715 | struct fcoe_ctlr *ctlr; |
014f5c3f | 716 | struct fcoe_port *port; |
7f349142 VD |
717 | |
718 | /* Setup lport private data to point to fcoe softc */ | |
1875f27e | 719 | port = lport_priv(lport); |
8597ae8b | 720 | fcoe = port->priv; |
619fe4be | 721 | ctlr = fcoe_to_ctlr(fcoe); |
7f349142 | 722 | |
9a6cf881 HR |
723 | /* Figure out the VLAN ID, if any */ |
724 | if (netdev->priv_flags & IFF_802_1Q_VLAN) | |
725 | lport->vlan = vlan_dev_vlan_id(netdev); | |
726 | else | |
727 | lport->vlan = 0; | |
728 | ||
7f349142 VD |
729 | /* |
730 | * Determine max frame size based on underlying device and optional | |
731 | * user-configured limit. If the MFS is too low, fcoe_link_ok() | |
732 | * will return 0, so do this first. | |
733 | */ | |
7221d7e5 YZ |
734 | mfs = netdev->mtu; |
735 | if (netdev->features & NETIF_F_FCOE_MTU) { | |
736 | mfs = FCOE_MTU; | |
737 | FCOE_NETDEV_DBG(netdev, "Supports FCOE_MTU of %d bytes\n", mfs); | |
738 | } | |
739 | mfs -= (sizeof(struct fcoe_hdr) + sizeof(struct fcoe_crc_eof)); | |
1875f27e | 740 | if (fc_set_mfs(lport, mfs)) |
7f349142 VD |
741 | return -EINVAL; |
742 | ||
7f349142 | 743 | /* offload features support */ |
54a5b21d | 744 | fcoe_netdev_features_change(lport, netdev); |
7f349142 | 745 | |
014f5c3f CL |
746 | skb_queue_head_init(&port->fcoe_pending_queue); |
747 | port->fcoe_pending_queue_active = 0; | |
1875f27e | 748 | setup_timer(&port->timer, fcoe_queue_timer, (unsigned long)lport); |
7f349142 | 749 | |
5e4f8fe7 RL |
750 | fcoe_link_speed_update(lport); |
751 | ||
1875f27e | 752 | if (!lport->vport) { |
dcece412 | 753 | if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN)) |
619fe4be | 754 | wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 1, 0); |
1875f27e | 755 | fc_set_wwnn(lport, wwnn); |
dcece412 | 756 | if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN)) |
619fe4be | 757 | wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, |
cf4aebca | 758 | 2, 0); |
1875f27e | 759 | fc_set_wwpn(lport, wwpn); |
9a05753b | 760 | } |
7f349142 | 761 | |
7f349142 VD |
762 | return 0; |
763 | } | |
764 | ||
765 | /** | |
1875f27e RL |
766 | * fcoe_shost_config() - Set up the SCSI host associated with a local port |
767 | * @lport: The local port | |
1875f27e | 768 | * @dev: The device associated with the SCSI host |
7f349142 VD |
769 | * |
770 | * Must be called after fcoe_lport_config() and fcoe_netdev_config() | |
771 | * | |
1875f27e | 772 | * Returns: 0 for success |
7f349142 | 773 | */ |
8ba00a4b | 774 | static int fcoe_shost_config(struct fc_lport *lport, struct device *dev) |
7f349142 VD |
775 | { |
776 | int rc = 0; | |
777 | ||
778 | /* lport scsi host config */ | |
1875f27e RL |
779 | lport->host->max_lun = FCOE_MAX_LUN; |
780 | lport->host->max_id = FCOE_MAX_FCP_TARGET; | |
781 | lport->host->max_channel = 0; | |
da87bfab VD |
782 | lport->host->max_cmd_len = FCOE_MAX_CMD_LEN; |
783 | ||
1875f27e | 784 | if (lport->vport) |
8ca86f84 | 785 | lport->host->transportt = fcoe_vport_scsi_transport; |
e9084bb8 | 786 | else |
8ca86f84 | 787 | lport->host->transportt = fcoe_nport_scsi_transport; |
7f349142 VD |
788 | |
789 | /* add the new host to the SCSI-ml */ | |
1875f27e | 790 | rc = scsi_add_host(lport->host, dev); |
7f349142 | 791 | if (rc) { |
1875f27e | 792 | FCOE_NETDEV_DBG(fcoe_netdev(lport), "fcoe_shost_config: " |
d5488eb9 | 793 | "error on scsi_add_host\n"); |
7f349142 VD |
794 | return rc; |
795 | } | |
9a05753b | 796 | |
1875f27e | 797 | if (!lport->vport) |
4be929be | 798 | fc_host_max_npiv_vports(lport->host) = USHRT_MAX; |
9a05753b | 799 | |
1875f27e | 800 | snprintf(fc_host_symbolic_name(lport->host), FC_SYMBOLIC_NAME_SIZE, |
5baa17c3 | 801 | "%s v%s over %s", FCOE_NAME, FCOE_VERSION, |
1875f27e | 802 | fcoe_netdev(lport)->name); |
7f349142 VD |
803 | |
804 | return 0; | |
805 | } | |
806 | ||
6fef3902 NP |
807 | |
808 | /** | |
809 | * fcoe_fdmi_info() - Get FDMI related info from net devive for SW FCoE | |
810 | * @lport: The local port that is associated with the net device | |
811 | * @netdev: The associated net device | |
812 | * | |
813 | * Must be called after fcoe_shost_config() as it will use local port mutex | |
814 | * | |
815 | */ | |
816 | static void fcoe_fdmi_info(struct fc_lport *lport, struct net_device *netdev) | |
817 | { | |
818 | struct fcoe_interface *fcoe; | |
819 | struct fcoe_port *port; | |
820 | struct net_device *realdev; | |
821 | int rc; | |
6fef3902 NP |
822 | |
823 | port = lport_priv(lport); | |
824 | fcoe = port->priv; | |
825 | realdev = fcoe->realdev; | |
826 | ||
6fef3902 NP |
827 | /* No FDMI state m/c for NPIV ports */ |
828 | if (lport->vport) | |
829 | return; | |
830 | ||
831 | if (realdev->netdev_ops->ndo_fcoe_get_hbainfo) { | |
f07d46bb NP |
832 | struct netdev_fcoe_hbainfo *fdmi; |
833 | fdmi = kzalloc(sizeof(*fdmi), GFP_KERNEL); | |
834 | if (!fdmi) | |
835 | return; | |
836 | ||
6fef3902 | 837 | rc = realdev->netdev_ops->ndo_fcoe_get_hbainfo(realdev, |
f07d46bb | 838 | fdmi); |
6fef3902 NP |
839 | if (rc) { |
840 | printk(KERN_INFO "fcoe: Failed to retrieve FDMI " | |
841 | "information from netdev.\n"); | |
842 | return; | |
843 | } | |
844 | ||
845 | snprintf(fc_host_serial_number(lport->host), | |
846 | FC_SERIAL_NUMBER_SIZE, | |
847 | "%s", | |
f07d46bb | 848 | fdmi->serial_number); |
6fef3902 NP |
849 | snprintf(fc_host_manufacturer(lport->host), |
850 | FC_SERIAL_NUMBER_SIZE, | |
851 | "%s", | |
f07d46bb | 852 | fdmi->manufacturer); |
6fef3902 NP |
853 | snprintf(fc_host_model(lport->host), |
854 | FC_SYMBOLIC_NAME_SIZE, | |
855 | "%s", | |
f07d46bb | 856 | fdmi->model); |
6fef3902 NP |
857 | snprintf(fc_host_model_description(lport->host), |
858 | FC_SYMBOLIC_NAME_SIZE, | |
859 | "%s", | |
f07d46bb | 860 | fdmi->model_description); |
6fef3902 NP |
861 | snprintf(fc_host_hardware_version(lport->host), |
862 | FC_VERSION_STRING_SIZE, | |
863 | "%s", | |
f07d46bb | 864 | fdmi->hardware_version); |
6fef3902 NP |
865 | snprintf(fc_host_driver_version(lport->host), |
866 | FC_VERSION_STRING_SIZE, | |
867 | "%s", | |
f07d46bb | 868 | fdmi->driver_version); |
6fef3902 NP |
869 | snprintf(fc_host_optionrom_version(lport->host), |
870 | FC_VERSION_STRING_SIZE, | |
871 | "%s", | |
f07d46bb | 872 | fdmi->optionrom_version); |
6fef3902 NP |
873 | snprintf(fc_host_firmware_version(lport->host), |
874 | FC_VERSION_STRING_SIZE, | |
875 | "%s", | |
f07d46bb | 876 | fdmi->firmware_version); |
6fef3902 NP |
877 | |
878 | /* Enable FDMI lport states */ | |
879 | lport->fdmi_enabled = 1; | |
f07d46bb | 880 | kfree(fdmi); |
6fef3902 NP |
881 | } else { |
882 | lport->fdmi_enabled = 0; | |
883 | printk(KERN_INFO "fcoe: No FDMI support.\n"); | |
884 | } | |
885 | } | |
886 | ||
1875f27e RL |
887 | /** |
888 | * fcoe_oem_match() - The match routine for the offloaded exchange manager | |
889 | * @fp: The I/O frame | |
d7179680 | 890 | * |
1875f27e RL |
891 | * This routine will be associated with an exchange manager (EM). When |
892 | * the libfc exchange handling code is looking for an EM to use it will | |
893 | * call this routine and pass it the frame that it wishes to send. This | |
894 | * routine will return True if the associated EM is to be used and False | |
895 | * if the echange code should continue looking for an EM. | |
896 | * | |
897 | * The offload EM that this routine is associated with will handle any | |
898 | * packets that are for SCSI read requests. | |
899 | * | |
1ff9918b KP |
900 | * This has been enhanced to work when FCoE stack is operating in target |
901 | * mode. | |
902 | * | |
1875f27e | 903 | * Returns: True for read types I/O, otherwise returns false. |
d7179680 | 904 | */ |
7c9c6841 | 905 | static bool fcoe_oem_match(struct fc_frame *fp) |
d7179680 | 906 | { |
1ff9918b KP |
907 | struct fc_frame_header *fh = fc_frame_header_get(fp); |
908 | struct fcp_cmnd *fcp; | |
909 | ||
910 | if (fc_fcp_is_read(fr_fsp(fp)) && | |
911 | (fr_fsp(fp)->data_len > fcoe_ddp_min)) | |
912 | return true; | |
a762dce4 YZ |
913 | else if ((fr_fsp(fp) == NULL) && |
914 | (fh->fh_r_ctl == FC_RCTL_DD_UNSOL_CMD) && | |
915 | (ntohs(fh->fh_rx_id) == FC_XID_UNKNOWN)) { | |
1ff9918b | 916 | fcp = fc_frame_payload_get(fp, sizeof(*fcp)); |
a762dce4 YZ |
917 | if ((fcp->fc_flags & FCP_CFL_WRDATA) && |
918 | (ntohl(fcp->fc_dl) > fcoe_ddp_min)) | |
1ff9918b KP |
919 | return true; |
920 | } | |
921 | return false; | |
d7179680 VD |
922 | } |
923 | ||
7f349142 | 924 | /** |
1875f27e RL |
925 | * fcoe_em_config() - Allocate and configure an exchange manager |
926 | * @lport: The local port that the new EM will be associated with | |
7f349142 | 927 | * |
1875f27e | 928 | * Returns: 0 on success |
7f349142 | 929 | */ |
1875f27e | 930 | static inline int fcoe_em_config(struct fc_lport *lport) |
7f349142 | 931 | { |
1875f27e | 932 | struct fcoe_port *port = lport_priv(lport); |
8597ae8b | 933 | struct fcoe_interface *fcoe = port->priv; |
25024989 | 934 | struct fcoe_interface *oldfcoe = NULL; |
1d1b88dc | 935 | struct net_device *old_real_dev, *cur_real_dev; |
d7179680 VD |
936 | u16 min_xid = FCOE_MIN_XID; |
937 | u16 max_xid = FCOE_MAX_XID; | |
938 | ||
939 | /* | |
940 | * Check if need to allocate an em instance for | |
941 | * offload exchange ids to be shared across all VN_PORTs/lport. | |
942 | */ | |
1875f27e RL |
943 | if (!lport->lro_enabled || !lport->lro_xid || |
944 | (lport->lro_xid >= max_xid)) { | |
945 | lport->lro_xid = 0; | |
d7179680 VD |
946 | goto skip_oem; |
947 | } | |
948 | ||
949 | /* | |
950 | * Reuse existing offload em instance in case | |
1d1b88dc | 951 | * it is already allocated on real eth device |
d7179680 | 952 | */ |
25024989 CL |
953 | if (fcoe->netdev->priv_flags & IFF_802_1Q_VLAN) |
954 | cur_real_dev = vlan_dev_real_dev(fcoe->netdev); | |
1d1b88dc | 955 | else |
25024989 | 956 | cur_real_dev = fcoe->netdev; |
1d1b88dc | 957 | |
25024989 | 958 | list_for_each_entry(oldfcoe, &fcoe_hostlist, list) { |
25024989 CL |
959 | if (oldfcoe->netdev->priv_flags & IFF_802_1Q_VLAN) |
960 | old_real_dev = vlan_dev_real_dev(oldfcoe->netdev); | |
1d1b88dc | 961 | else |
25024989 | 962 | old_real_dev = oldfcoe->netdev; |
1d1b88dc VD |
963 | |
964 | if (cur_real_dev == old_real_dev) { | |
991cbb60 | 965 | fcoe->oem = oldfcoe->oem; |
d7179680 VD |
966 | break; |
967 | } | |
968 | } | |
969 | ||
991cbb60 | 970 | if (fcoe->oem) { |
1875f27e | 971 | if (!fc_exch_mgr_add(lport, fcoe->oem, fcoe_oem_match)) { |
d7179680 VD |
972 | printk(KERN_ERR "fcoe_em_config: failed to add " |
973 | "offload em:%p on interface:%s\n", | |
991cbb60 | 974 | fcoe->oem, fcoe->netdev->name); |
d7179680 VD |
975 | return -ENOMEM; |
976 | } | |
977 | } else { | |
1875f27e RL |
978 | fcoe->oem = fc_exch_mgr_alloc(lport, FC_CLASS_3, |
979 | FCOE_MIN_XID, lport->lro_xid, | |
980 | fcoe_oem_match); | |
991cbb60 | 981 | if (!fcoe->oem) { |
d7179680 VD |
982 | printk(KERN_ERR "fcoe_em_config: failed to allocate " |
983 | "em for offload exches on interface:%s\n", | |
25024989 | 984 | fcoe->netdev->name); |
d7179680 VD |
985 | return -ENOMEM; |
986 | } | |
987 | } | |
988 | ||
989 | /* | |
990 | * Exclude offload EM xid range from next EM xid range. | |
991 | */ | |
1875f27e | 992 | min_xid += lport->lro_xid + 1; |
d7179680 VD |
993 | |
994 | skip_oem: | |
1875f27e | 995 | if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, min_xid, max_xid, NULL)) { |
d7179680 | 996 | printk(KERN_ERR "fcoe_em_config: failed to " |
25024989 | 997 | "allocate em on interface %s\n", fcoe->netdev->name); |
7f349142 | 998 | return -ENOMEM; |
d7179680 | 999 | } |
7f349142 VD |
1000 | |
1001 | return 0; | |
1002 | } | |
1003 | ||
1004 | /** | |
1875f27e RL |
1005 | * fcoe_if_destroy() - Tear down a SW FCoE instance |
1006 | * @lport: The local port to be destroyed | |
34ce27bc | 1007 | * |
7f349142 | 1008 | */ |
af7f85d9 | 1009 | static void fcoe_if_destroy(struct fc_lport *lport) |
7f349142 | 1010 | { |
b2085a4e NP |
1011 | struct fcoe_port *port = lport_priv(lport); |
1012 | struct fcoe_interface *fcoe = port->priv; | |
1013 | struct net_device *netdev = fcoe->netdev; | |
1014 | ||
1015 | FCOE_NETDEV_DBG(netdev, "Destroying interface\n"); | |
1016 | ||
1017 | /* Logout of the fabric */ | |
1018 | fc_fabric_logoff(lport); | |
1019 | ||
1020 | /* Cleanup the fc_lport */ | |
1021 | fc_lport_destroy(lport); | |
1022 | ||
1023 | /* Stop the transmit retry timer */ | |
1024 | del_timer_sync(&port->timer); | |
1025 | ||
1026 | /* Free existing transmit skbs */ | |
1027 | fcoe_clean_pending_queue(lport); | |
1028 | ||
1029 | rtnl_lock(); | |
1030 | if (!is_zero_ether_addr(port->data_src_addr)) | |
1031 | dev_uc_del(netdev, port->data_src_addr); | |
433eba04 VD |
1032 | if (lport->vport) |
1033 | synchronize_net(); | |
1034 | else | |
1035 | fcoe_interface_remove(fcoe); | |
b2085a4e NP |
1036 | rtnl_unlock(); |
1037 | ||
f161fb72 | 1038 | /* Free queued packets for the per-CPU receive threads */ |
af7f85d9 | 1039 | fcoe_percpu_clean(lport); |
f161fb72 | 1040 | |
7f349142 | 1041 | /* Detach from the scsi-ml */ |
af7f85d9 CL |
1042 | fc_remove_host(lport->host); |
1043 | scsi_remove_host(lport->host); | |
7f349142 | 1044 | |
80e736f8 YZ |
1045 | /* Destroy lport scsi_priv */ |
1046 | fc_fcp_destroy(lport); | |
1047 | ||
7f349142 | 1048 | /* There are no more rports or I/O, free the EM */ |
af7f85d9 | 1049 | fc_exch_mgr_free(lport); |
7f349142 | 1050 | |
7f349142 | 1051 | /* Free memory used by statistical counters */ |
af7f85d9 | 1052 | fc_lport_free_stats(lport); |
7f349142 | 1053 | |
3cab4468 VD |
1054 | /* |
1055 | * Release the Scsi_Host for vport but hold on to | |
1056 | * master lport until it fcoe interface fully cleaned-up. | |
1057 | */ | |
1058 | if (lport->vport) | |
1059 | scsi_host_put(lport->host); | |
7f349142 VD |
1060 | } |
1061 | ||
1875f27e RL |
1062 | /** |
1063 | * fcoe_ddp_setup() - Call a LLD's ddp_setup through the net device | |
1064 | * @lport: The local port to setup DDP for | |
1065 | * @xid: The exchange ID for this DDP transfer | |
1066 | * @sgl: The scatterlist describing this transfer | |
1067 | * @sgc: The number of sg items | |
7f349142 | 1068 | * |
1875f27e | 1069 | * Returns: 0 if the DDP context was not configured |
7f349142 | 1070 | */ |
1875f27e RL |
1071 | static int fcoe_ddp_setup(struct fc_lport *lport, u16 xid, |
1072 | struct scatterlist *sgl, unsigned int sgc) | |
7f349142 | 1073 | { |
1875f27e | 1074 | struct net_device *netdev = fcoe_netdev(lport); |
7f349142 | 1075 | |
1875f27e RL |
1076 | if (netdev->netdev_ops->ndo_fcoe_ddp_setup) |
1077 | return netdev->netdev_ops->ndo_fcoe_ddp_setup(netdev, | |
1078 | xid, sgl, | |
1079 | sgc); | |
7f349142 VD |
1080 | |
1081 | return 0; | |
1082 | } | |
1083 | ||
71f89491 YZ |
1084 | /** |
1085 | * fcoe_ddp_target() - Call a LLD's ddp_target through the net device | |
1086 | * @lport: The local port to setup DDP for | |
1087 | * @xid: The exchange ID for this DDP transfer | |
1088 | * @sgl: The scatterlist describing this transfer | |
1089 | * @sgc: The number of sg items | |
1090 | * | |
1091 | * Returns: 0 if the DDP context was not configured | |
1092 | */ | |
1093 | static int fcoe_ddp_target(struct fc_lport *lport, u16 xid, | |
1094 | struct scatterlist *sgl, unsigned int sgc) | |
1095 | { | |
1096 | struct net_device *netdev = fcoe_netdev(lport); | |
1097 | ||
1098 | if (netdev->netdev_ops->ndo_fcoe_ddp_target) | |
1099 | return netdev->netdev_ops->ndo_fcoe_ddp_target(netdev, xid, | |
1100 | sgl, sgc); | |
1101 | ||
1102 | return 0; | |
1103 | } | |
1104 | ||
1105 | ||
1875f27e RL |
1106 | /** |
1107 | * fcoe_ddp_done() - Call a LLD's ddp_done through the net device | |
1108 | * @lport: The local port to complete DDP on | |
1109 | * @xid: The exchange ID for this DDP transfer | |
7f349142 | 1110 | * |
1875f27e | 1111 | * Returns: the length of data that have been completed by DDP |
7f349142 | 1112 | */ |
1875f27e | 1113 | static int fcoe_ddp_done(struct fc_lport *lport, u16 xid) |
7f349142 | 1114 | { |
1875f27e | 1115 | struct net_device *netdev = fcoe_netdev(lport); |
7f349142 | 1116 | |
1875f27e RL |
1117 | if (netdev->netdev_ops->ndo_fcoe_ddp_done) |
1118 | return netdev->netdev_ops->ndo_fcoe_ddp_done(netdev, xid); | |
7f349142 VD |
1119 | return 0; |
1120 | } | |
1121 | ||
7f349142 | 1122 | /** |
1875f27e RL |
1123 | * fcoe_if_create() - Create a FCoE instance on an interface |
1124 | * @fcoe: The FCoE interface to create a local port on | |
1125 | * @parent: The device pointer to be the parent in sysfs for the SCSI host | |
1126 | * @npiv: Indicates if the port is a vport or not | |
7f349142 | 1127 | * |
1875f27e | 1128 | * Creates a fc_lport instance and a Scsi_Host instance and configure them. |
7f349142 | 1129 | * |
1875f27e | 1130 | * Returns: The allocated fc_lport or an error pointer |
7f349142 | 1131 | */ |
030f4e00 | 1132 | static struct fc_lport *fcoe_if_create(struct fcoe_interface *fcoe, |
9a05753b | 1133 | struct device *parent, int npiv) |
7f349142 | 1134 | { |
619fe4be | 1135 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
1875f27e | 1136 | struct net_device *netdev = fcoe->netdev; |
72fa396b | 1137 | struct fc_lport *lport, *n_port; |
014f5c3f | 1138 | struct fcoe_port *port; |
72fa396b | 1139 | struct Scsi_Host *shost; |
1875f27e | 1140 | int rc; |
9a05753b CL |
1141 | /* |
1142 | * parent is only a vport if npiv is 1, | |
1143 | * but we'll only use vport in that case so go ahead and set it | |
1144 | */ | |
1145 | struct fc_vport *vport = dev_to_vport(parent); | |
7f349142 | 1146 | |
d5488eb9 | 1147 | FCOE_NETDEV_DBG(netdev, "Create Interface\n"); |
7f349142 | 1148 | |
72fa396b VD |
1149 | if (!npiv) |
1150 | lport = libfc_host_alloc(&fcoe_shost_template, sizeof(*port)); | |
1151 | else | |
1152 | lport = libfc_vport_create(vport, sizeof(*port)); | |
1153 | ||
86221969 | 1154 | if (!lport) { |
d5488eb9 | 1155 | FCOE_NETDEV_DBG(netdev, "Could not allocate host structure\n"); |
af7f85d9 | 1156 | rc = -ENOMEM; |
030f4e00 | 1157 | goto out; |
7f349142 | 1158 | } |
014f5c3f | 1159 | port = lport_priv(lport); |
2e70e241 | 1160 | port->lport = lport; |
8597ae8b | 1161 | port->priv = fcoe; |
66524ec9 | 1162 | port->get_netdev = fcoe_netdev; |
8597ae8b BPG |
1163 | port->max_queue_depth = FCOE_MAX_QUEUE_DEPTH; |
1164 | port->min_queue_depth = FCOE_MIN_QUEUE_DEPTH; | |
2e70e241 | 1165 | INIT_WORK(&port->destroy_work, fcoe_destroy_work); |
7f349142 | 1166 | |
f9184df3 NH |
1167 | /* |
1168 | * Need to add the lport to the hostlist | |
1169 | * so we catch NETDEV_CHANGE events. | |
1170 | */ | |
1171 | fcoe_hostlist_add(lport); | |
1172 | ||
1875f27e | 1173 | /* configure a fc_lport including the exchange manager */ |
af7f85d9 | 1174 | rc = fcoe_lport_config(lport); |
7f349142 | 1175 | if (rc) { |
d5488eb9 RL |
1176 | FCOE_NETDEV_DBG(netdev, "Could not configure lport for the " |
1177 | "interface\n"); | |
7f349142 VD |
1178 | goto out_host_put; |
1179 | } | |
1180 | ||
9a05753b | 1181 | if (npiv) { |
9f8f3aa6 CL |
1182 | FCOE_NETDEV_DBG(netdev, "Setting vport names, " |
1183 | "%16.16llx %16.16llx\n", | |
1875f27e | 1184 | vport->node_name, vport->port_name); |
9a05753b CL |
1185 | fc_set_wwnn(lport, vport->node_name); |
1186 | fc_set_wwpn(lport, vport->port_name); | |
1187 | } | |
1188 | ||
ab6b85c1 | 1189 | /* configure lport network properties */ |
af7f85d9 | 1190 | rc = fcoe_netdev_config(lport, netdev); |
ab6b85c1 | 1191 | if (rc) { |
d5488eb9 RL |
1192 | FCOE_NETDEV_DBG(netdev, "Could not configure netdev for the " |
1193 | "interface\n"); | |
54b649f8 | 1194 | goto out_lp_destroy; |
ab6b85c1 | 1195 | } |
97c8389d | 1196 | |
7f349142 | 1197 | /* configure lport scsi host properties */ |
8ba00a4b | 1198 | rc = fcoe_shost_config(lport, parent); |
7f349142 | 1199 | if (rc) { |
d5488eb9 RL |
1200 | FCOE_NETDEV_DBG(netdev, "Could not configure shost for the " |
1201 | "interface\n"); | |
54b649f8 | 1202 | goto out_lp_destroy; |
7f349142 VD |
1203 | } |
1204 | ||
96316099 | 1205 | /* Initialize the library */ |
619fe4be | 1206 | rc = fcoe_libfc_config(lport, ctlr, &fcoe_libfc_fcn_templ, 1); |
7f349142 | 1207 | if (rc) { |
96316099 | 1208 | FCOE_NETDEV_DBG(netdev, "Could not configure libfc for the " |
d5488eb9 | 1209 | "interface\n"); |
96316099 | 1210 | goto out_lp_destroy; |
7f349142 VD |
1211 | } |
1212 | ||
6fef3902 NP |
1213 | /* Initialized FDMI information */ |
1214 | fcoe_fdmi_info(lport, netdev); | |
1215 | ||
72fa396b VD |
1216 | /* |
1217 | * fcoe_em_alloc() and fcoe_hostlist_add() both | |
1218 | * need to be atomic with respect to other changes to the | |
1219 | * hostlist since fcoe_em_alloc() looks for an existing EM | |
1220 | * instance on host list updated by fcoe_hostlist_add(). | |
1221 | * | |
1222 | * This is currently handled through the fcoe_config_mutex | |
1223 | * begin held. | |
1224 | */ | |
1225 | if (!npiv) | |
9a05753b CL |
1226 | /* lport exch manager allocation */ |
1227 | rc = fcoe_em_config(lport); | |
72fa396b VD |
1228 | else { |
1229 | shost = vport_to_shost(vport); | |
1230 | n_port = shost_priv(shost); | |
1231 | rc = fc_exch_mgr_list_clone(n_port, lport); | |
1232 | } | |
1233 | ||
1234 | if (rc) { | |
1235 | FCOE_NETDEV_DBG(netdev, "Could not configure the EM\n"); | |
1236 | goto out_lp_destroy; | |
7f349142 VD |
1237 | } |
1238 | ||
af7f85d9 | 1239 | return lport; |
7f349142 VD |
1240 | |
1241 | out_lp_destroy: | |
af7f85d9 | 1242 | fc_exch_mgr_free(lport); |
7f349142 | 1243 | out_host_put: |
f9184df3 | 1244 | fcoe_hostlist_del(lport); |
af7f85d9 CL |
1245 | scsi_host_put(lport->host); |
1246 | out: | |
1247 | return ERR_PTR(rc); | |
7f349142 VD |
1248 | } |
1249 | ||
1250 | /** | |
1875f27e | 1251 | * fcoe_if_init() - Initialization routine for fcoe.ko |
7f349142 | 1252 | * |
1875f27e RL |
1253 | * Attaches the SW FCoE transport to the FC transport |
1254 | * | |
1255 | * Returns: 0 on success | |
7f349142 VD |
1256 | */ |
1257 | static int __init fcoe_if_init(void) | |
1258 | { | |
1259 | /* attach to scsi transport */ | |
8ca86f84 YZ |
1260 | fcoe_nport_scsi_transport = |
1261 | fc_attach_transport(&fcoe_nport_fc_functions); | |
1262 | fcoe_vport_scsi_transport = | |
1263 | fc_attach_transport(&fcoe_vport_fc_functions); | |
7f349142 | 1264 | |
8ca86f84 | 1265 | if (!fcoe_nport_scsi_transport) { |
d5488eb9 | 1266 | printk(KERN_ERR "fcoe: Failed to attach to the FC transport\n"); |
7f349142 VD |
1267 | return -ENODEV; |
1268 | } | |
1269 | ||
1270 | return 0; | |
1271 | } | |
1272 | ||
1273 | /** | |
1875f27e RL |
1274 | * fcoe_if_exit() - Tear down fcoe.ko |
1275 | * | |
1276 | * Detaches the SW FCoE transport from the FC transport | |
7f349142 | 1277 | * |
1875f27e | 1278 | * Returns: 0 on success |
7f349142 | 1279 | */ |
7c9c6841 | 1280 | static int __exit fcoe_if_exit(void) |
7f349142 | 1281 | { |
8ca86f84 YZ |
1282 | fc_release_transport(fcoe_nport_scsi_transport); |
1283 | fc_release_transport(fcoe_vport_scsi_transport); | |
1284 | fcoe_nport_scsi_transport = NULL; | |
1285 | fcoe_vport_scsi_transport = NULL; | |
7f349142 VD |
1286 | return 0; |
1287 | } | |
1288 | ||
4b9bc86d | 1289 | static void fcoe_thread_cleanup_local(unsigned int cpu) |
8976f424 | 1290 | { |
8976f424 | 1291 | struct page *crc_eof; |
4b9bc86d | 1292 | struct fcoe_percpu_s *p; |
8976f424 | 1293 | |
4b9bc86d | 1294 | p = per_cpu_ptr(&fcoe_percpu, cpu); |
8976f424 | 1295 | spin_lock_bh(&p->fcoe_rx_list.lock); |
8976f424 RL |
1296 | crc_eof = p->crc_eof_page; |
1297 | p->crc_eof_page = NULL; | |
1298 | p->crc_eof_offset = 0; | |
1299 | spin_unlock_bh(&p->fcoe_rx_list.lock); | |
1300 | ||
8976f424 RL |
1301 | if (crc_eof) |
1302 | put_page(crc_eof); | |
4b9bc86d | 1303 | flush_work(&p->work); |
8976f424 RL |
1304 | } |
1305 | ||
064287ee KP |
1306 | /** |
1307 | * fcoe_select_cpu() - Selects CPU to handle post-processing of incoming | |
1308 | * command. | |
064287ee | 1309 | * |
d272281c VD |
1310 | * This routine selects next CPU based on cpumask to distribute |
1311 | * incoming requests in round robin. | |
064287ee | 1312 | * |
d272281c | 1313 | * Returns: int CPU number |
064287ee | 1314 | */ |
d272281c | 1315 | static inline unsigned int fcoe_select_cpu(void) |
064287ee KP |
1316 | { |
1317 | static unsigned int selected_cpu; | |
1318 | ||
d272281c VD |
1319 | selected_cpu = cpumask_next(selected_cpu, cpu_online_mask); |
1320 | if (selected_cpu >= nr_cpu_ids) | |
1321 | selected_cpu = cpumask_first(cpu_online_mask); | |
1322 | ||
064287ee KP |
1323 | return selected_cpu; |
1324 | } | |
1325 | ||
85b4aa49 | 1326 | /** |
1875f27e RL |
1327 | * fcoe_rcv() - Receive packets from a net device |
1328 | * @skb: The received packet | |
1329 | * @netdev: The net device that the packet was received on | |
1330 | * @ptype: The packet type context | |
1331 | * @olddev: The last device net device | |
85b4aa49 | 1332 | * |
1875f27e RL |
1333 | * This routine is called by NET_RX_SOFTIRQ. It receives a packet, builds a |
1334 | * FC frame and passes the frame to libfc. | |
85b4aa49 RL |
1335 | * |
1336 | * Returns: 0 for success | |
34f42a07 | 1337 | */ |
7c9c6841 | 1338 | static int fcoe_rcv(struct sk_buff *skb, struct net_device *netdev, |
85b4aa49 RL |
1339 | struct packet_type *ptype, struct net_device *olddev) |
1340 | { | |
1875f27e | 1341 | struct fc_lport *lport; |
85b4aa49 | 1342 | struct fcoe_rcv_info *fr; |
619fe4be | 1343 | struct fcoe_ctlr *ctlr; |
259ad85d | 1344 | struct fcoe_interface *fcoe; |
85b4aa49 | 1345 | struct fc_frame_header *fh; |
85b4aa49 | 1346 | struct fcoe_percpu_s *fps; |
519e5135 | 1347 | struct ethhdr *eh; |
b2f0091f | 1348 | unsigned int cpu; |
85b4aa49 | 1349 | |
259ad85d | 1350 | fcoe = container_of(ptype, struct fcoe_interface, fcoe_packet_type); |
619fe4be RL |
1351 | ctlr = fcoe_to_ctlr(fcoe); |
1352 | lport = ctlr->lp; | |
1875f27e | 1353 | if (unlikely(!lport)) { |
465b87bf | 1354 | FCOE_NETDEV_DBG(netdev, "Cannot find hba structure\n"); |
85b4aa49 RL |
1355 | goto err2; |
1356 | } | |
1875f27e | 1357 | if (!lport->link_up) |
97c8389d | 1358 | goto err2; |
85b4aa49 | 1359 | |
465b87bf BVA |
1360 | FCOE_NETDEV_DBG(netdev, |
1361 | "skb_info: len:%d data_len:%d head:%p data:%p tail:%p end:%p sum:%d dev:%s\n", | |
d5488eb9 RL |
1362 | skb->len, skb->data_len, skb->head, skb->data, |
1363 | skb_tail_pointer(skb), skb_end_pointer(skb), | |
1364 | skb->csum, skb->dev ? skb->dev->name : "<NULL>"); | |
85b4aa49 | 1365 | |
8b612434 NH |
1366 | |
1367 | skb = skb_share_check(skb, GFP_ATOMIC); | |
1368 | ||
1369 | if (skb == NULL) | |
1370 | return NET_RX_DROP; | |
1371 | ||
519e5135 | 1372 | eh = eth_hdr(skb); |
519e5135 | 1373 | |
619fe4be | 1374 | if (is_fip_mode(ctlr) && |
6942df7f | 1375 | !ether_addr_equal(eh->h_source, ctlr->dest_addr)) { |
519e5135 VD |
1376 | FCOE_NETDEV_DBG(netdev, "wrong source mac address:%pM\n", |
1377 | eh->h_source); | |
85b4aa49 RL |
1378 | goto err; |
1379 | } | |
1380 | ||
1381 | /* | |
1382 | * Check for minimum frame length, and make sure required FCoE | |
1383 | * and FC headers are pulled into the linear data area. | |
1384 | */ | |
1385 | if (unlikely((skb->len < FCOE_MIN_FRAME) || | |
1875f27e | 1386 | !pskb_may_pull(skb, FCOE_HEADER_LEN))) |
85b4aa49 RL |
1387 | goto err; |
1388 | ||
1389 | skb_set_transport_header(skb, sizeof(struct fcoe_hdr)); | |
1390 | fh = (struct fc_frame_header *) skb_transport_header(skb); | |
1391 | ||
0ee31cb5 RL |
1392 | if (ntoh24(&eh->h_dest[3]) != ntoh24(fh->fh_d_id)) { |
1393 | FCOE_NETDEV_DBG(netdev, "FC frame d_id mismatch with MAC:%pM\n", | |
1394 | eh->h_dest); | |
1395 | goto err; | |
1396 | } | |
1397 | ||
85b4aa49 | 1398 | fr = fcoe_dev_from_skb(skb); |
1875f27e | 1399 | fr->fr_dev = lport; |
5e5e92df | 1400 | |
85b4aa49 | 1401 | /* |
b2f0091f VD |
1402 | * In case the incoming frame's exchange is originated from |
1403 | * the initiator, then received frame's exchange id is ANDed | |
1404 | * with fc_cpu_mask bits to get the same cpu on which exchange | |
d272281c VD |
1405 | * was originated, otherwise select cpu using rx exchange id |
1406 | * or fcoe_select_cpu(). | |
85b4aa49 | 1407 | */ |
b2f0091f VD |
1408 | if (ntoh24(fh->fh_f_ctl) & FC_FC_EX_CTX) |
1409 | cpu = ntohs(fh->fh_ox_id) & fc_cpu_mask; | |
064287ee | 1410 | else { |
d272281c VD |
1411 | if (ntohs(fh->fh_rx_id) == FC_XID_UNKNOWN) |
1412 | cpu = fcoe_select_cpu(); | |
1413 | else | |
29bdd2bb | 1414 | cpu = ntohs(fh->fh_rx_id) & fc_cpu_mask; |
064287ee | 1415 | } |
324f6678 VD |
1416 | |
1417 | if (cpu >= nr_cpu_ids) | |
1418 | goto err; | |
1419 | ||
8976f424 | 1420 | fps = &per_cpu(fcoe_percpu, cpu); |
94aa29f2 | 1421 | spin_lock(&fps->fcoe_rx_list.lock); |
8976f424 RL |
1422 | /* |
1423 | * We now have a valid CPU that we're targeting for | |
1424 | * this skb. We also have this receive thread locked, | |
1425 | * so we're free to queue skbs into it's queue. | |
1426 | */ | |
85b4aa49 | 1427 | |
5e70c4c4 NH |
1428 | /* |
1429 | * Note: We used to have a set of conditions under which we would | |
1430 | * call fcoe_recv_frame directly, rather than queuing to the rx list | |
1431 | * as it could save a few cycles, but doing so is prohibited, as | |
1432 | * fcoe_recv_frame has several paths that may sleep, which is forbidden | |
1433 | * in softirq context. | |
859b7b64 | 1434 | */ |
5e70c4c4 | 1435 | __skb_queue_tail(&fps->fcoe_rx_list, skb); |
4b9bc86d | 1436 | schedule_work_on(cpu, &fps->work); |
94aa29f2 | 1437 | spin_unlock(&fps->fcoe_rx_list.lock); |
85b4aa49 | 1438 | |
34bac2ef | 1439 | return NET_RX_SUCCESS; |
85b4aa49 | 1440 | err: |
1bd49b48 | 1441 | per_cpu_ptr(lport->stats, get_cpu())->ErrorFrames++; |
f018b73a | 1442 | put_cpu(); |
85b4aa49 RL |
1443 | err2: |
1444 | kfree_skb(skb); | |
34bac2ef | 1445 | return NET_RX_DROP; |
85b4aa49 | 1446 | } |
85b4aa49 RL |
1447 | |
1448 | /** | |
8597ae8b | 1449 | * fcoe_alloc_paged_crc_eof() - Allocate a page to be used for the trailer CRC |
1875f27e RL |
1450 | * @skb: The packet to be transmitted |
1451 | * @tlen: The total length of the trailer | |
1452 | * | |
85b4aa49 | 1453 | * Returns: 0 for success |
34f42a07 | 1454 | */ |
8597ae8b | 1455 | static int fcoe_alloc_paged_crc_eof(struct sk_buff *skb, int tlen) |
85b4aa49 RL |
1456 | { |
1457 | struct fcoe_percpu_s *fps; | |
8597ae8b | 1458 | int rc; |
85b4aa49 | 1459 | |
5e5e92df | 1460 | fps = &get_cpu_var(fcoe_percpu); |
8597ae8b | 1461 | rc = fcoe_get_paged_crc_eof(skb, tlen, fps); |
5e5e92df | 1462 | put_cpu_var(fcoe_percpu); |
85b4aa49 | 1463 | |
8597ae8b | 1464 | return rc; |
85b4aa49 | 1465 | } |
85b4aa49 RL |
1466 | |
1467 | /** | |
1875f27e RL |
1468 | * fcoe_xmit() - Transmit a FCoE frame |
1469 | * @lport: The local port that the frame is to be transmitted for | |
1470 | * @fp: The frame to be transmitted | |
85b4aa49 | 1471 | * |
1875f27e | 1472 | * Return: 0 for success |
34f42a07 | 1473 | */ |
7c9c6841 | 1474 | static int fcoe_xmit(struct fc_lport *lport, struct fc_frame *fp) |
85b4aa49 | 1475 | { |
4bb6b515 | 1476 | int wlen; |
85b4aa49 RL |
1477 | u32 crc; |
1478 | struct ethhdr *eh; | |
1479 | struct fcoe_crc_eof *cp; | |
1480 | struct sk_buff *skb; | |
1bd49b48 | 1481 | struct fc_stats *stats; |
85b4aa49 RL |
1482 | struct fc_frame_header *fh; |
1483 | unsigned int hlen; /* header length implies the version */ | |
1484 | unsigned int tlen; /* trailer length */ | |
1485 | unsigned int elen; /* eth header, may include vlan */ | |
1875f27e | 1486 | struct fcoe_port *port = lport_priv(lport); |
8597ae8b | 1487 | struct fcoe_interface *fcoe = port->priv; |
619fe4be | 1488 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
85b4aa49 RL |
1489 | u8 sof, eof; |
1490 | struct fcoe_hdr *hp; | |
1491 | ||
1492 | WARN_ON((fr_len(fp) % sizeof(u32)) != 0); | |
1493 | ||
85b4aa49 | 1494 | fh = fc_frame_header_get(fp); |
97c8389d JE |
1495 | skb = fp_skb(fp); |
1496 | wlen = skb->len / FCOE_WORD_TO_BYTE; | |
1497 | ||
1875f27e | 1498 | if (!lport->link_up) { |
3caf02ee | 1499 | kfree_skb(skb); |
97c8389d | 1500 | return 0; |
85b4aa49 RL |
1501 | } |
1502 | ||
9860eeb4 | 1503 | if (unlikely(fh->fh_type == FC_TYPE_ELS) && |
619fe4be | 1504 | fcoe_ctlr_els_send(ctlr, lport, skb)) |
97c8389d JE |
1505 | return 0; |
1506 | ||
85b4aa49 RL |
1507 | sof = fr_sof(fp); |
1508 | eof = fr_eof(fp); | |
1509 | ||
4e57e1cb | 1510 | elen = sizeof(struct ethhdr); |
85b4aa49 RL |
1511 | hlen = sizeof(struct fcoe_hdr); |
1512 | tlen = sizeof(struct fcoe_crc_eof); | |
1513 | wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; | |
1514 | ||
1515 | /* crc offload */ | |
1875f27e | 1516 | if (likely(lport->crc_offload)) { |
253aab05 | 1517 | skb->ip_summed = CHECKSUM_PARTIAL; |
85b4aa49 RL |
1518 | skb->csum_start = skb_headroom(skb); |
1519 | skb->csum_offset = skb->len; | |
1520 | crc = 0; | |
1521 | } else { | |
1522 | skb->ip_summed = CHECKSUM_NONE; | |
1523 | crc = fcoe_fc_crc(fp); | |
1524 | } | |
1525 | ||
014f5c3f | 1526 | /* copy port crc and eof to the skb buff */ |
85b4aa49 RL |
1527 | if (skb_is_nonlinear(skb)) { |
1528 | skb_frag_t *frag; | |
8597ae8b | 1529 | if (fcoe_alloc_paged_crc_eof(skb, tlen)) { |
e9041581 | 1530 | kfree_skb(skb); |
85b4aa49 RL |
1531 | return -ENOMEM; |
1532 | } | |
1533 | frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; | |
77dfce07 | 1534 | cp = kmap_atomic(skb_frag_page(frag)) |
85b4aa49 RL |
1535 | + frag->page_offset; |
1536 | } else { | |
1537 | cp = (struct fcoe_crc_eof *)skb_put(skb, tlen); | |
1538 | } | |
1539 | ||
1540 | memset(cp, 0, sizeof(*cp)); | |
1541 | cp->fcoe_eof = eof; | |
1542 | cp->fcoe_crc32 = cpu_to_le32(~crc); | |
1543 | ||
1544 | if (skb_is_nonlinear(skb)) { | |
77dfce07 | 1545 | kunmap_atomic(cp); |
85b4aa49 RL |
1546 | cp = NULL; |
1547 | } | |
1548 | ||
014f5c3f | 1549 | /* adjust skb network/transport offsets to match mac/fcoe/port */ |
85b4aa49 RL |
1550 | skb_push(skb, elen + hlen); |
1551 | skb_reset_mac_header(skb); | |
1552 | skb_reset_network_header(skb); | |
1553 | skb->mac_len = elen; | |
211c738d | 1554 | skb->protocol = htons(ETH_P_FCOE); |
31c37a6f | 1555 | skb->priority = fcoe->priority; |
6f6c2aa3 | 1556 | |
d1483bb9 | 1557 | if (fcoe->netdev->priv_flags & IFF_802_1Q_VLAN && |
f646968f | 1558 | fcoe->realdev->features & NETIF_F_HW_VLAN_CTAG_TX) { |
2884d423 | 1559 | /* must set skb->dev before calling vlan_put_tag */ |
d1483bb9 | 1560 | skb->dev = fcoe->realdev; |
b960a0ac JP |
1561 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), |
1562 | vlan_dev_vlan_id(fcoe->netdev)); | |
d1483bb9 VD |
1563 | } else |
1564 | skb->dev = fcoe->netdev; | |
85b4aa49 RL |
1565 | |
1566 | /* fill up mac and fcoe headers */ | |
1567 | eh = eth_hdr(skb); | |
1568 | eh->h_proto = htons(ETH_P_FCOE); | |
619fe4be RL |
1569 | memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN); |
1570 | if (ctlr->map_dest) | |
cd229e42 | 1571 | memcpy(eh->h_dest + 3, fh->fh_d_id, 3); |
85b4aa49 | 1572 | |
619fe4be RL |
1573 | if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN)) |
1574 | memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN); | |
85b4aa49 | 1575 | else |
11b56188 | 1576 | memcpy(eh->h_source, port->data_src_addr, ETH_ALEN); |
85b4aa49 RL |
1577 | |
1578 | hp = (struct fcoe_hdr *)(eh + 1); | |
1579 | memset(hp, 0, sizeof(*hp)); | |
1580 | if (FC_FCOE_VER) | |
1581 | FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); | |
1582 | hp->fcoe_sof = sof; | |
1583 | ||
39ca9a06 | 1584 | /* fcoe lso, mss is in max_payload which is non-zero for FCP data */ |
1875f27e | 1585 | if (lport->seq_offload && fr_max_payload(fp)) { |
39ca9a06 YZ |
1586 | skb_shinfo(skb)->gso_type = SKB_GSO_FCOE; |
1587 | skb_shinfo(skb)->gso_size = fr_max_payload(fp); | |
1588 | } else { | |
1589 | skb_shinfo(skb)->gso_type = 0; | |
1590 | skb_shinfo(skb)->gso_size = 0; | |
1591 | } | |
85b4aa49 | 1592 | /* update tx stats: regardless if LLD fails */ |
1bd49b48 | 1593 | stats = per_cpu_ptr(lport->stats, get_cpu()); |
582b45bc RL |
1594 | stats->TxFrames++; |
1595 | stats->TxWords += wlen; | |
f018b73a | 1596 | put_cpu(); |
85b4aa49 RL |
1597 | |
1598 | /* send down to lld */ | |
1875f27e | 1599 | fr_dev(fp) = lport; |
980f5156 | 1600 | fcoe_port_send(port, skb); |
85b4aa49 RL |
1601 | return 0; |
1602 | } | |
85b4aa49 | 1603 | |
52ee8321 VD |
1604 | /** |
1605 | * fcoe_filter_frames() - filter out bad fcoe frames, i.e. bad CRC | |
1606 | * @lport: The local port the frame was received on | |
1607 | * @fp: The received frame | |
1608 | * | |
1609 | * Return: 0 on passing filtering checks | |
1610 | */ | |
1611 | static inline int fcoe_filter_frames(struct fc_lport *lport, | |
1612 | struct fc_frame *fp) | |
1613 | { | |
619fe4be | 1614 | struct fcoe_ctlr *ctlr; |
52ee8321 VD |
1615 | struct fcoe_interface *fcoe; |
1616 | struct fc_frame_header *fh; | |
1617 | struct sk_buff *skb = (struct sk_buff *)fp; | |
1bd49b48 | 1618 | struct fc_stats *stats; |
52ee8321 VD |
1619 | |
1620 | /* | |
1621 | * We only check CRC if no offload is available and if it is | |
1622 | * it's solicited data, in which case, the FCP layer would | |
1623 | * check it during the copy. | |
1624 | */ | |
1625 | if (lport->crc_offload && skb->ip_summed == CHECKSUM_UNNECESSARY) | |
1626 | fr_flags(fp) &= ~FCPHF_CRC_UNCHECKED; | |
1627 | else | |
1628 | fr_flags(fp) |= FCPHF_CRC_UNCHECKED; | |
1629 | ||
1630 | fh = (struct fc_frame_header *) skb_transport_header(skb); | |
1631 | fh = fc_frame_header_get(fp); | |
1632 | if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && fh->fh_type == FC_TYPE_FCP) | |
1633 | return 0; | |
1634 | ||
8597ae8b | 1635 | fcoe = ((struct fcoe_port *)lport_priv(lport))->priv; |
619fe4be RL |
1636 | ctlr = fcoe_to_ctlr(fcoe); |
1637 | if (is_fip_mode(ctlr) && fc_frame_payload_op(fp) == ELS_LOGO && | |
52ee8321 VD |
1638 | ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { |
1639 | FCOE_DBG("fcoe: dropping FCoE lport LOGO in fip mode\n"); | |
1640 | return -EINVAL; | |
1641 | } | |
1642 | ||
f2f96d20 | 1643 | if (!(fr_flags(fp) & FCPHF_CRC_UNCHECKED) || |
52ee8321 VD |
1644 | le32_to_cpu(fr_crc(fp)) == ~crc32(~0, skb->data, skb->len)) { |
1645 | fr_flags(fp) &= ~FCPHF_CRC_UNCHECKED; | |
1646 | return 0; | |
1647 | } | |
1648 | ||
1bd49b48 | 1649 | stats = per_cpu_ptr(lport->stats, get_cpu()); |
52ee8321 VD |
1650 | stats->InvalidCRCCount++; |
1651 | if (stats->InvalidCRCCount < 5) | |
1652 | printk(KERN_WARNING "fcoe: dropping frame with CRC error\n"); | |
7e1e7ead | 1653 | put_cpu(); |
52ee8321 VD |
1654 | return -EINVAL; |
1655 | } | |
1656 | ||
34f42a07 | 1657 | /** |
859b7b64 CL |
1658 | * fcoe_recv_frame() - process a single received frame |
1659 | * @skb: frame to process | |
85b4aa49 | 1660 | */ |
859b7b64 | 1661 | static void fcoe_recv_frame(struct sk_buff *skb) |
85b4aa49 | 1662 | { |
85b4aa49 | 1663 | u32 fr_len; |
1875f27e | 1664 | struct fc_lport *lport; |
85b4aa49 | 1665 | struct fcoe_rcv_info *fr; |
1bd49b48 | 1666 | struct fc_stats *stats; |
85b4aa49 RL |
1667 | struct fcoe_crc_eof crc_eof; |
1668 | struct fc_frame *fp; | |
014f5c3f | 1669 | struct fcoe_port *port; |
85b4aa49 RL |
1670 | struct fcoe_hdr *hp; |
1671 | ||
859b7b64 CL |
1672 | fr = fcoe_dev_from_skb(skb); |
1673 | lport = fr->fr_dev; | |
1674 | if (unlikely(!lport)) { | |
4b9bc86d | 1675 | FCOE_NETDEV_DBG(skb->dev, "NULL lport in skb\n"); |
859b7b64 CL |
1676 | kfree_skb(skb); |
1677 | return; | |
1678 | } | |
1679 | ||
465b87bf BVA |
1680 | FCOE_NETDEV_DBG(skb->dev, |
1681 | "skb_info: len:%d data_len:%d head:%p data:%p tail:%p end:%p sum:%d dev:%s\n", | |
859b7b64 CL |
1682 | skb->len, skb->data_len, |
1683 | skb->head, skb->data, skb_tail_pointer(skb), | |
1684 | skb_end_pointer(skb), skb->csum, | |
1685 | skb->dev ? skb->dev->name : "<NULL>"); | |
1686 | ||
859b7b64 | 1687 | port = lport_priv(lport); |
f1633011 | 1688 | skb_linearize(skb); /* check for skb_is_nonlinear is within skb_linearize */ |
859b7b64 CL |
1689 | |
1690 | /* | |
1691 | * Frame length checks and setting up the header pointers | |
1692 | * was done in fcoe_rcv already. | |
1693 | */ | |
1694 | hp = (struct fcoe_hdr *) skb_network_header(skb); | |
859b7b64 | 1695 | |
1bd49b48 | 1696 | stats = per_cpu_ptr(lport->stats, get_cpu()); |
859b7b64 CL |
1697 | if (unlikely(FC_FCOE_DECAPS_VER(hp) != FC_FCOE_VER)) { |
1698 | if (stats->ErrorFrames < 5) | |
1699 | printk(KERN_WARNING "fcoe: FCoE version " | |
1700 | "mismatch: The frame has " | |
1701 | "version %x, but the " | |
1702 | "initiator supports version " | |
1703 | "%x\n", FC_FCOE_DECAPS_VER(hp), | |
1704 | FC_FCOE_VER); | |
f018b73a | 1705 | goto drop; |
859b7b64 CL |
1706 | } |
1707 | ||
1708 | skb_pull(skb, sizeof(struct fcoe_hdr)); | |
1709 | fr_len = skb->len - sizeof(struct fcoe_crc_eof); | |
1710 | ||
1711 | stats->RxFrames++; | |
1712 | stats->RxWords += fr_len / FCOE_WORD_TO_BYTE; | |
1713 | ||
1714 | fp = (struct fc_frame *)skb; | |
1715 | fc_frame_init(fp); | |
1716 | fr_dev(fp) = lport; | |
1717 | fr_sof(fp) = hp->fcoe_sof; | |
1718 | ||
1719 | /* Copy out the CRC and EOF trailer for access */ | |
f018b73a JE |
1720 | if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) |
1721 | goto drop; | |
859b7b64 CL |
1722 | fr_eof(fp) = crc_eof.fcoe_eof; |
1723 | fr_crc(fp) = crc_eof.fcoe_crc32; | |
f018b73a JE |
1724 | if (pskb_trim(skb, fr_len)) |
1725 | goto drop; | |
859b7b64 | 1726 | |
52ee8321 VD |
1727 | if (!fcoe_filter_frames(lport, fp)) { |
1728 | put_cpu(); | |
1729 | fc_exch_recv(lport, fp); | |
1730 | return; | |
859b7b64 | 1731 | } |
f018b73a JE |
1732 | drop: |
1733 | stats->ErrorFrames++; | |
1734 | put_cpu(); | |
1735 | kfree_skb(skb); | |
859b7b64 CL |
1736 | } |
1737 | ||
1738 | /** | |
4b9bc86d SAS |
1739 | * fcoe_receive_work() - The per-CPU worker |
1740 | * @work: The work struct | |
859b7b64 | 1741 | * |
859b7b64 | 1742 | */ |
4b9bc86d | 1743 | static void fcoe_receive_work(struct work_struct *work) |
859b7b64 | 1744 | { |
4b9bc86d | 1745 | struct fcoe_percpu_s *p; |
859b7b64 | 1746 | struct sk_buff *skb; |
20dc3811 NH |
1747 | struct sk_buff_head tmp; |
1748 | ||
4b9bc86d | 1749 | p = container_of(work, struct fcoe_percpu_s, work); |
20dc3811 | 1750 | skb_queue_head_init(&tmp); |
859b7b64 | 1751 | |
4b9bc86d SAS |
1752 | spin_lock_bh(&p->fcoe_rx_list.lock); |
1753 | skb_queue_splice_init(&p->fcoe_rx_list, &tmp); | |
1754 | spin_unlock_bh(&p->fcoe_rx_list.lock); | |
95fdd5e9 | 1755 | |
4b9bc86d SAS |
1756 | if (!skb_queue_len(&tmp)) |
1757 | return; | |
95fdd5e9 | 1758 | |
4b9bc86d SAS |
1759 | while ((skb = __skb_dequeue(&tmp))) |
1760 | fcoe_recv_frame(skb); | |
85b4aa49 RL |
1761 | } |
1762 | ||
85b4aa49 | 1763 | /** |
1875f27e | 1764 | * fcoe_dev_setup() - Setup the link change notification interface |
34f42a07 | 1765 | */ |
b0d428ad | 1766 | static void fcoe_dev_setup(void) |
85b4aa49 | 1767 | { |
6f6c2aa3 | 1768 | register_dcbevent_notifier(&dcb_notifier); |
85b4aa49 RL |
1769 | register_netdevice_notifier(&fcoe_notifier); |
1770 | } | |
1771 | ||
1772 | /** | |
1875f27e | 1773 | * fcoe_dev_cleanup() - Cleanup the link change notification interface |
34f42a07 | 1774 | */ |
85b4aa49 RL |
1775 | static void fcoe_dev_cleanup(void) |
1776 | { | |
6f6c2aa3 | 1777 | unregister_dcbevent_notifier(&dcb_notifier); |
85b4aa49 RL |
1778 | unregister_netdevice_notifier(&fcoe_notifier); |
1779 | } | |
1780 | ||
6f6c2aa3 | 1781 | static struct fcoe_interface * |
1782 | fcoe_hostlist_lookup_realdev_port(struct net_device *netdev) | |
1783 | { | |
1784 | struct fcoe_interface *fcoe; | |
1785 | struct net_device *real_dev; | |
1786 | ||
1787 | list_for_each_entry(fcoe, &fcoe_hostlist, list) { | |
1788 | if (fcoe->netdev->priv_flags & IFF_802_1Q_VLAN) | |
1789 | real_dev = vlan_dev_real_dev(fcoe->netdev); | |
1790 | else | |
1791 | real_dev = fcoe->netdev; | |
1792 | ||
1793 | if (netdev == real_dev) | |
1794 | return fcoe; | |
1795 | } | |
1796 | return NULL; | |
1797 | } | |
1798 | ||
1799 | static int fcoe_dcb_app_notification(struct notifier_block *notifier, | |
1800 | ulong event, void *ptr) | |
1801 | { | |
1802 | struct dcb_app_type *entry = ptr; | |
619fe4be | 1803 | struct fcoe_ctlr *ctlr; |
6f6c2aa3 | 1804 | struct fcoe_interface *fcoe; |
1805 | struct net_device *netdev; | |
6f6c2aa3 | 1806 | int prio; |
1807 | ||
1808 | if (entry->app.selector != DCB_APP_IDTYPE_ETHTYPE) | |
1809 | return NOTIFY_OK; | |
1810 | ||
1811 | netdev = dev_get_by_index(&init_net, entry->ifindex); | |
1812 | if (!netdev) | |
1813 | return NOTIFY_OK; | |
1814 | ||
1815 | fcoe = fcoe_hostlist_lookup_realdev_port(netdev); | |
1816 | dev_put(netdev); | |
1817 | if (!fcoe) | |
1818 | return NOTIFY_OK; | |
1819 | ||
619fe4be RL |
1820 | ctlr = fcoe_to_ctlr(fcoe); |
1821 | ||
6f6c2aa3 | 1822 | if (entry->dcbx & DCB_CAP_DCBX_VER_CEE) |
1823 | prio = ffs(entry->app.priority) - 1; | |
1824 | else | |
1825 | prio = entry->app.priority; | |
1826 | ||
1827 | if (prio < 0) | |
1828 | return NOTIFY_OK; | |
1829 | ||
1830 | if (entry->app.protocol == ETH_P_FIP || | |
1831 | entry->app.protocol == ETH_P_FCOE) | |
619fe4be | 1832 | ctlr->priority = prio; |
6f6c2aa3 | 1833 | |
31c37a6f NP |
1834 | if (entry->app.protocol == ETH_P_FCOE) |
1835 | fcoe->priority = prio; | |
6f6c2aa3 | 1836 | |
1837 | return NOTIFY_OK; | |
1838 | } | |
1839 | ||
85b4aa49 | 1840 | /** |
1875f27e RL |
1841 | * fcoe_device_notification() - Handler for net device events |
1842 | * @notifier: The context of the notification | |
1843 | * @event: The type of event | |
1844 | * @ptr: The net device that the event was on | |
85b4aa49 | 1845 | * |
1875f27e | 1846 | * This function is called by the Ethernet driver in case of link change event. |
85b4aa49 RL |
1847 | * |
1848 | * Returns: 0 for success | |
34f42a07 | 1849 | */ |
85b4aa49 RL |
1850 | static int fcoe_device_notification(struct notifier_block *notifier, |
1851 | ulong event, void *ptr) | |
1852 | { | |
435c8667 | 1853 | struct fcoe_ctlr_device *cdev; |
1875f27e | 1854 | struct fc_lport *lport = NULL; |
351638e7 | 1855 | struct net_device *netdev = netdev_notifier_info_to_dev(ptr); |
619fe4be | 1856 | struct fcoe_ctlr *ctlr; |
014f5c3f | 1857 | struct fcoe_interface *fcoe; |
2e70e241 | 1858 | struct fcoe_port *port; |
1bd49b48 | 1859 | struct fc_stats *stats; |
97c8389d | 1860 | u32 link_possible = 1; |
85b4aa49 RL |
1861 | u32 mfs; |
1862 | int rc = NOTIFY_OK; | |
1863 | ||
014f5c3f | 1864 | list_for_each_entry(fcoe, &fcoe_hostlist, list) { |
25024989 | 1865 | if (fcoe->netdev == netdev) { |
619fe4be RL |
1866 | ctlr = fcoe_to_ctlr(fcoe); |
1867 | lport = ctlr->lp; | |
85b4aa49 RL |
1868 | break; |
1869 | } | |
1870 | } | |
1875f27e | 1871 | if (!lport) { |
85b4aa49 RL |
1872 | rc = NOTIFY_DONE; |
1873 | goto out; | |
1874 | } | |
1875 | ||
85b4aa49 RL |
1876 | switch (event) { |
1877 | case NETDEV_DOWN: | |
1878 | case NETDEV_GOING_DOWN: | |
97c8389d | 1879 | link_possible = 0; |
85b4aa49 RL |
1880 | break; |
1881 | case NETDEV_UP: | |
1882 | case NETDEV_CHANGE: | |
85b4aa49 RL |
1883 | break; |
1884 | case NETDEV_CHANGEMTU: | |
7221d7e5 YZ |
1885 | if (netdev->features & NETIF_F_FCOE_MTU) |
1886 | break; | |
1d1b88dc VD |
1887 | mfs = netdev->mtu - (sizeof(struct fcoe_hdr) + |
1888 | sizeof(struct fcoe_crc_eof)); | |
85b4aa49 | 1889 | if (mfs >= FC_MIN_MAX_FRAME) |
1875f27e | 1890 | fc_set_mfs(lport, mfs); |
85b4aa49 RL |
1891 | break; |
1892 | case NETDEV_REGISTER: | |
1893 | break; | |
2e70e241 CL |
1894 | case NETDEV_UNREGISTER: |
1895 | list_del(&fcoe->list); | |
619fe4be | 1896 | port = lport_priv(ctlr->lp); |
2ca32b48 | 1897 | queue_work(fcoe_wq, &port->destroy_work); |
2e70e241 CL |
1898 | goto out; |
1899 | break; | |
54a5b21d YZ |
1900 | case NETDEV_FEAT_CHANGE: |
1901 | fcoe_netdev_features_change(lport, netdev); | |
1902 | break; | |
85b4aa49 | 1903 | default: |
1d1b88dc | 1904 | FCOE_NETDEV_DBG(netdev, "Unknown event %ld " |
d5488eb9 | 1905 | "from netdev netlink\n", event); |
85b4aa49 | 1906 | } |
5e4f8fe7 RL |
1907 | |
1908 | fcoe_link_speed_update(lport); | |
1909 | ||
435c8667 RL |
1910 | cdev = fcoe_ctlr_to_ctlr_dev(ctlr); |
1911 | ||
1912 | if (link_possible && !fcoe_link_ok(lport)) { | |
1913 | switch (cdev->enabled) { | |
1914 | case FCOE_CTLR_DISABLED: | |
1915 | pr_info("Link up while interface is disabled.\n"); | |
1916 | break; | |
1917 | case FCOE_CTLR_ENABLED: | |
1918 | case FCOE_CTLR_UNUSED: | |
1919 | fcoe_ctlr_link_up(ctlr); | |
1920 | }; | |
1921 | } else if (fcoe_ctlr_link_down(ctlr)) { | |
1922 | switch (cdev->enabled) { | |
1923 | case FCOE_CTLR_DISABLED: | |
1924 | pr_info("Link down while interface is disabled.\n"); | |
1925 | break; | |
1926 | case FCOE_CTLR_ENABLED: | |
1927 | case FCOE_CTLR_UNUSED: | |
1928 | stats = per_cpu_ptr(lport->stats, get_cpu()); | |
1929 | stats->LinkFailureCount++; | |
1930 | put_cpu(); | |
1931 | fcoe_clean_pending_queue(lport); | |
1932 | }; | |
85b4aa49 RL |
1933 | } |
1934 | out: | |
1935 | return rc; | |
1936 | } | |
1937 | ||
55a66d3c VD |
1938 | /** |
1939 | * fcoe_disable() - Disables a FCoE interface | |
78a58246 | 1940 | * @netdev : The net_device object the Ethernet interface to create on |
55a66d3c | 1941 | * |
78a58246 | 1942 | * Called from fcoe transport. |
55a66d3c VD |
1943 | * |
1944 | * Returns: 0 for success | |
435c8667 RL |
1945 | * |
1946 | * Deprecated: use fcoe_ctlr_enabled() | |
55a66d3c | 1947 | */ |
78a58246 | 1948 | static int fcoe_disable(struct net_device *netdev) |
55a66d3c | 1949 | { |
619fe4be | 1950 | struct fcoe_ctlr *ctlr; |
55a66d3c | 1951 | struct fcoe_interface *fcoe; |
55a66d3c VD |
1952 | int rc = 0; |
1953 | ||
1954 | mutex_lock(&fcoe_config_mutex); | |
55a66d3c | 1955 | |
ee5df628 | 1956 | rtnl_lock(); |
55a66d3c VD |
1957 | fcoe = fcoe_hostlist_lookup_port(netdev); |
1958 | rtnl_unlock(); | |
1959 | ||
9ee50e48 | 1960 | if (fcoe) { |
619fe4be RL |
1961 | ctlr = fcoe_to_ctlr(fcoe); |
1962 | fcoe_ctlr_link_down(ctlr); | |
1963 | fcoe_clean_pending_queue(ctlr->lp); | |
9ee50e48 | 1964 | } else |
55a66d3c VD |
1965 | rc = -ENODEV; |
1966 | ||
55a66d3c VD |
1967 | mutex_unlock(&fcoe_config_mutex); |
1968 | return rc; | |
1969 | } | |
1970 | ||
1971 | /** | |
1972 | * fcoe_enable() - Enables a FCoE interface | |
78a58246 | 1973 | * @netdev : The net_device object the Ethernet interface to create on |
55a66d3c | 1974 | * |
78a58246 | 1975 | * Called from fcoe transport. |
55a66d3c VD |
1976 | * |
1977 | * Returns: 0 for success | |
1978 | */ | |
78a58246 | 1979 | static int fcoe_enable(struct net_device *netdev) |
55a66d3c | 1980 | { |
619fe4be | 1981 | struct fcoe_ctlr *ctlr; |
55a66d3c | 1982 | struct fcoe_interface *fcoe; |
55a66d3c VD |
1983 | int rc = 0; |
1984 | ||
1985 | mutex_lock(&fcoe_config_mutex); | |
ee5df628 | 1986 | rtnl_lock(); |
55a66d3c VD |
1987 | fcoe = fcoe_hostlist_lookup_port(netdev); |
1988 | rtnl_unlock(); | |
1989 | ||
619fe4be | 1990 | if (!fcoe) { |
55a66d3c | 1991 | rc = -ENODEV; |
619fe4be RL |
1992 | goto out; |
1993 | } | |
55a66d3c | 1994 | |
619fe4be RL |
1995 | ctlr = fcoe_to_ctlr(fcoe); |
1996 | ||
1997 | if (!fcoe_link_ok(ctlr->lp)) | |
1998 | fcoe_ctlr_link_up(ctlr); | |
1999 | ||
2000 | out: | |
55a66d3c VD |
2001 | mutex_unlock(&fcoe_config_mutex); |
2002 | return rc; | |
2003 | } | |
2004 | ||
435c8667 RL |
2005 | /** |
2006 | * fcoe_ctlr_enabled() - Enable or disable an FCoE Controller | |
2007 | * @cdev: The FCoE Controller that is being enabled or disabled | |
2008 | * | |
2009 | * fcoe_sysfs will ensure that the state of 'enabled' has | |
2010 | * changed, so no checking is necessary here. This routine simply | |
2011 | * calls fcoe_enable or fcoe_disable, both of which are deprecated. | |
2012 | * When those routines are removed the functionality can be merged | |
2013 | * here. | |
2014 | */ | |
2015 | static int fcoe_ctlr_enabled(struct fcoe_ctlr_device *cdev) | |
2016 | { | |
2017 | struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev); | |
2018 | struct fc_lport *lport = ctlr->lp; | |
2019 | struct net_device *netdev = fcoe_netdev(lport); | |
2020 | ||
2021 | switch (cdev->enabled) { | |
2022 | case FCOE_CTLR_ENABLED: | |
2023 | return fcoe_enable(netdev); | |
2024 | case FCOE_CTLR_DISABLED: | |
2025 | return fcoe_disable(netdev); | |
2026 | case FCOE_CTLR_UNUSED: | |
2027 | default: | |
2028 | return -ENOTSUPP; | |
2029 | }; | |
2030 | } | |
2031 | ||
a87dccc7 HR |
2032 | /** |
2033 | * fcoe_ctlr_mode() - Switch FIP mode | |
2034 | * @cdev: The FCoE Controller that is being modified | |
2035 | * | |
2036 | * When the FIP mode has been changed we need to update | |
2037 | * the multicast addresses to ensure we get the correct | |
2038 | * frames. | |
2039 | */ | |
2040 | static void fcoe_ctlr_mode(struct fcoe_ctlr_device *ctlr_dev) | |
2041 | { | |
2042 | struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev); | |
2043 | struct fcoe_interface *fcoe = fcoe_ctlr_priv(ctlr); | |
2044 | ||
2045 | if (ctlr_dev->mode == FIP_CONN_TYPE_VN2VN && | |
2046 | ctlr->mode != FIP_MODE_VN2VN) { | |
2047 | dev_mc_del(fcoe->netdev, FIP_ALL_ENODE_MACS); | |
2048 | dev_mc_add(fcoe->netdev, FIP_ALL_VN2VN_MACS); | |
2049 | dev_mc_add(fcoe->netdev, FIP_ALL_P2P_MACS); | |
2050 | } else if (ctlr->mode != FIP_MODE_FABRIC) { | |
2051 | dev_mc_del(fcoe->netdev, FIP_ALL_VN2VN_MACS); | |
2052 | dev_mc_del(fcoe->netdev, FIP_ALL_P2P_MACS); | |
2053 | dev_mc_add(fcoe->netdev, FIP_ALL_ENODE_MACS); | |
2054 | } | |
2055 | fcoe_ctlr_set_fip_mode(ctlr_dev); | |
2056 | } | |
2057 | ||
85b4aa49 | 2058 | /** |
1875f27e | 2059 | * fcoe_destroy() - Destroy a FCoE interface |
78a58246 | 2060 | * @netdev : The net_device object the Ethernet interface to create on |
1875f27e | 2061 | * |
78a58246 | 2062 | * Called from fcoe transport |
85b4aa49 RL |
2063 | * |
2064 | * Returns: 0 for success | |
34f42a07 | 2065 | */ |
78a58246 | 2066 | static int fcoe_destroy(struct net_device *netdev) |
85b4aa49 | 2067 | { |
619fe4be | 2068 | struct fcoe_ctlr *ctlr; |
030f4e00 | 2069 | struct fcoe_interface *fcoe; |
f04ca1b6 | 2070 | struct fc_lport *lport; |
b2085a4e | 2071 | struct fcoe_port *port; |
8eca355f | 2072 | int rc = 0; |
85b4aa49 | 2073 | |
dfc1d0fe | 2074 | mutex_lock(&fcoe_config_mutex); |
ee5df628 | 2075 | rtnl_lock(); |
2e70e241 CL |
2076 | fcoe = fcoe_hostlist_lookup_port(netdev); |
2077 | if (!fcoe) { | |
85b4aa49 | 2078 | rc = -ENODEV; |
78a58246 | 2079 | goto out_nodev; |
85b4aa49 | 2080 | } |
619fe4be RL |
2081 | ctlr = fcoe_to_ctlr(fcoe); |
2082 | lport = ctlr->lp; | |
b2085a4e | 2083 | port = lport_priv(lport); |
54a5b21d | 2084 | list_del(&fcoe->list); |
b2085a4e | 2085 | queue_work(fcoe_wq, &port->destroy_work); |
85b4aa49 | 2086 | out_nodev: |
b2085a4e | 2087 | rtnl_unlock(); |
dfc1d0fe | 2088 | mutex_unlock(&fcoe_config_mutex); |
85b4aa49 RL |
2089 | return rc; |
2090 | } | |
2091 | ||
1875f27e RL |
2092 | /** |
2093 | * fcoe_destroy_work() - Destroy a FCoE port in a deferred work context | |
2094 | * @work: Handle to the FCoE port to be destroyed | |
2095 | */ | |
2e70e241 CL |
2096 | static void fcoe_destroy_work(struct work_struct *work) |
2097 | { | |
f9c4358e RL |
2098 | struct fcoe_ctlr_device *cdev; |
2099 | struct fcoe_ctlr *ctlr; | |
2e70e241 | 2100 | struct fcoe_port *port; |
b2085a4e | 2101 | struct fcoe_interface *fcoe; |
94aa743a NP |
2102 | struct Scsi_Host *shost; |
2103 | struct fc_host_attrs *fc_host; | |
2104 | unsigned long flags; | |
2105 | struct fc_vport *vport; | |
2106 | struct fc_vport *next_vport; | |
2e70e241 CL |
2107 | |
2108 | port = container_of(work, struct fcoe_port, destroy_work); | |
94aa743a NP |
2109 | shost = port->lport->host; |
2110 | fc_host = shost_to_fc_host(shost); | |
2111 | ||
2112 | /* Loop through all the vports and mark them for deletion */ | |
2113 | spin_lock_irqsave(shost->host_lock, flags); | |
2114 | list_for_each_entry_safe(vport, next_vport, &fc_host->vports, peers) { | |
2115 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) { | |
2116 | continue; | |
2117 | } else { | |
2118 | vport->flags |= FC_VPORT_DELETING; | |
2119 | queue_work(fc_host_work_q(shost), | |
2120 | &vport->vport_delete_work); | |
2121 | } | |
2122 | } | |
2123 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2124 | ||
2125 | flush_workqueue(fc_host_work_q(shost)); | |
2126 | ||
2e70e241 | 2127 | mutex_lock(&fcoe_config_mutex); |
b2085a4e | 2128 | |
b2085a4e | 2129 | fcoe = port->priv; |
f9c4358e RL |
2130 | ctlr = fcoe_to_ctlr(fcoe); |
2131 | cdev = fcoe_ctlr_to_ctlr_dev(ctlr); | |
2132 | ||
2e70e241 | 2133 | fcoe_if_destroy(port->lport); |
ccefd23e | 2134 | fcoe_interface_cleanup(fcoe); |
b2085a4e | 2135 | |
2e70e241 | 2136 | mutex_unlock(&fcoe_config_mutex); |
f9c4358e RL |
2137 | |
2138 | fcoe_ctlr_device_delete(cdev); | |
2e70e241 CL |
2139 | } |
2140 | ||
78a58246 YZ |
2141 | /** |
2142 | * fcoe_match() - Check if the FCoE is supported on the given netdevice | |
2143 | * @netdev : The net_device object the Ethernet interface to create on | |
2144 | * | |
2145 | * Called from fcoe transport. | |
2146 | * | |
2147 | * Returns: always returns true as this is the default FCoE transport, | |
2148 | * i.e., support all netdevs. | |
2149 | */ | |
2150 | static bool fcoe_match(struct net_device *netdev) | |
2151 | { | |
2152 | return true; | |
2153 | } | |
2154 | ||
6f6c2aa3 | 2155 | /** |
2156 | * fcoe_dcb_create() - Initialize DCB attributes and hooks | |
2157 | * @netdev: The net_device object of the L2 link that should be queried | |
2158 | * @port: The fcoe_port to bind FCoE APP priority with | |
2159 | * @ | |
2160 | */ | |
2161 | static void fcoe_dcb_create(struct fcoe_interface *fcoe) | |
2162 | { | |
2163 | #ifdef CONFIG_DCB | |
2164 | int dcbx; | |
2165 | u8 fup, up; | |
2166 | struct net_device *netdev = fcoe->realdev; | |
619fe4be | 2167 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
6f6c2aa3 | 2168 | struct dcb_app app = { |
2169 | .priority = 0, | |
2170 | .protocol = ETH_P_FCOE | |
2171 | }; | |
2172 | ||
2173 | /* setup DCB priority attributes. */ | |
2174 | if (netdev && netdev->dcbnl_ops && netdev->dcbnl_ops->getdcbx) { | |
2175 | dcbx = netdev->dcbnl_ops->getdcbx(netdev); | |
2176 | ||
2177 | if (dcbx & DCB_CAP_DCBX_VER_IEEE) { | |
2178 | app.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE; | |
2179 | up = dcb_ieee_getapp_mask(netdev, &app); | |
2180 | app.protocol = ETH_P_FIP; | |
2181 | fup = dcb_ieee_getapp_mask(netdev, &app); | |
2182 | } else { | |
2183 | app.selector = DCB_APP_IDTYPE_ETHTYPE; | |
2184 | up = dcb_getapp(netdev, &app); | |
2185 | app.protocol = ETH_P_FIP; | |
2186 | fup = dcb_getapp(netdev, &app); | |
2187 | } | |
2188 | ||
31c37a6f NP |
2189 | fcoe->priority = ffs(up) ? ffs(up) - 1 : 0; |
2190 | ctlr->priority = ffs(fup) ? ffs(fup) - 1 : fcoe->priority; | |
6f6c2aa3 | 2191 | } |
2192 | #endif | |
2193 | } | |
2194 | ||
435c8667 RL |
2195 | enum fcoe_create_link_state { |
2196 | FCOE_CREATE_LINK_DOWN, | |
2197 | FCOE_CREATE_LINK_UP, | |
2198 | }; | |
2199 | ||
85b4aa49 | 2200 | /** |
435c8667 RL |
2201 | * _fcoe_create() - (internal) Create a fcoe interface |
2202 | * @netdev : The net_device object the Ethernet interface to create on | |
2203 | * @fip_mode: The FIP mode for this creation | |
2204 | * @link_state: The ctlr link state on creation | |
1875f27e | 2205 | * |
435c8667 RL |
2206 | * Called from either the libfcoe 'create' module parameter |
2207 | * via fcoe_create or from fcoe_syfs's ctlr_create file. | |
85b4aa49 | 2208 | * |
435c8667 RL |
2209 | * libfcoe's 'create' module parameter is deprecated so some |
2210 | * consolidation of code can be done when that interface is | |
2211 | * removed. | |
34f42a07 | 2212 | */ |
1917d42d | 2213 | static int _fcoe_create(struct net_device *netdev, enum fip_mode fip_mode, |
435c8667 | 2214 | enum fcoe_create_link_state link_state) |
85b4aa49 | 2215 | { |
b2085a4e | 2216 | int rc = 0; |
8d55e507 | 2217 | struct fcoe_ctlr_device *ctlr_dev; |
619fe4be | 2218 | struct fcoe_ctlr *ctlr; |
030f4e00 | 2219 | struct fcoe_interface *fcoe; |
af7f85d9 | 2220 | struct fc_lport *lport; |
85b4aa49 | 2221 | |
dfc1d0fe | 2222 | mutex_lock(&fcoe_config_mutex); |
ee5df628 | 2223 | rtnl_lock(); |
34ce27bc | 2224 | |
85b4aa49 RL |
2225 | /* look for existing lport */ |
2226 | if (fcoe_hostlist_lookup(netdev)) { | |
2227 | rc = -EEXIST; | |
78a58246 | 2228 | goto out_nodev; |
85b4aa49 | 2229 | } |
85b4aa49 | 2230 | |
1dd454d9 | 2231 | fcoe = fcoe_interface_create(netdev, fip_mode); |
7287fb91 RL |
2232 | if (IS_ERR(fcoe)) { |
2233 | rc = PTR_ERR(fcoe); | |
78a58246 | 2234 | goto out_nodev; |
030f4e00 CL |
2235 | } |
2236 | ||
619fe4be | 2237 | ctlr = fcoe_to_ctlr(fcoe); |
8d55e507 RL |
2238 | ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr); |
2239 | lport = fcoe_if_create(fcoe, &ctlr_dev->dev, 0); | |
af7f85d9 | 2240 | if (IS_ERR(lport)) { |
d5488eb9 | 2241 | printk(KERN_ERR "fcoe: Failed to create interface (%s)\n", |
85b4aa49 | 2242 | netdev->name); |
85b4aa49 | 2243 | rc = -EIO; |
848e7d5b | 2244 | rtnl_unlock(); |
2e70e241 | 2245 | fcoe_interface_cleanup(fcoe); |
f9c4358e RL |
2246 | mutex_unlock(&fcoe_config_mutex); |
2247 | fcoe_ctlr_device_delete(ctlr_dev); | |
2248 | goto out; | |
85b4aa49 | 2249 | } |
030f4e00 | 2250 | |
54b649f8 | 2251 | /* Make this the "master" N_Port */ |
619fe4be | 2252 | ctlr->lp = lport; |
54b649f8 | 2253 | |
6f6c2aa3 | 2254 | /* setup DCB priority attributes. */ |
2255 | fcoe_dcb_create(fcoe); | |
2256 | ||
54b649f8 CL |
2257 | /* start FIP Discovery and FLOGI */ |
2258 | lport->boot_time = jiffies; | |
2259 | fc_fabric_login(lport); | |
435c8667 RL |
2260 | |
2261 | /* | |
2262 | * If the fcoe_ctlr_device is to be set to DISABLED | |
2263 | * it must be done after the lport is added to the | |
2264 | * hostlist, but before the rtnl_lock is released. | |
2265 | * This is because the rtnl_lock protects the | |
2266 | * hostlist that fcoe_device_notification uses. If | |
2267 | * the FCoE Controller is intended to be created | |
2268 | * DISABLED then 'enabled' needs to be considered | |
2269 | * handling link events. 'enabled' must be set | |
2270 | * before the lport can be found in the hostlist | |
2271 | * when a link up event is received. | |
2272 | */ | |
2273 | if (link_state == FCOE_CREATE_LINK_UP) | |
2274 | ctlr_dev->enabled = FCOE_CTLR_ENABLED; | |
2275 | else | |
2276 | ctlr_dev->enabled = FCOE_CTLR_DISABLED; | |
2277 | ||
2278 | if (link_state == FCOE_CREATE_LINK_UP && | |
2279 | !fcoe_link_ok(lport)) { | |
22805123 | 2280 | rtnl_unlock(); |
619fe4be | 2281 | fcoe_ctlr_link_up(ctlr); |
22805123 RL |
2282 | mutex_unlock(&fcoe_config_mutex); |
2283 | return rc; | |
2284 | } | |
030f4e00 | 2285 | |
85b4aa49 | 2286 | out_nodev: |
34ce27bc | 2287 | rtnl_unlock(); |
dfc1d0fe | 2288 | mutex_unlock(&fcoe_config_mutex); |
f9c4358e | 2289 | out: |
85b4aa49 RL |
2290 | return rc; |
2291 | } | |
2292 | ||
435c8667 RL |
2293 | /** |
2294 | * fcoe_create() - Create a fcoe interface | |
2295 | * @netdev : The net_device object the Ethernet interface to create on | |
2296 | * @fip_mode: The FIP mode for this creation | |
2297 | * | |
2298 | * Called from fcoe transport | |
2299 | * | |
2300 | * Returns: 0 for success | |
2301 | */ | |
1917d42d | 2302 | static int fcoe_create(struct net_device *netdev, enum fip_mode fip_mode) |
435c8667 RL |
2303 | { |
2304 | return _fcoe_create(netdev, fip_mode, FCOE_CREATE_LINK_UP); | |
2305 | } | |
2306 | ||
2307 | /** | |
2308 | * fcoe_ctlr_alloc() - Allocate a fcoe interface from fcoe_sysfs | |
2309 | * @netdev: The net_device to be used by the allocated FCoE Controller | |
2310 | * | |
2311 | * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr | |
2312 | * in a link_down state. The allows the user an opportunity to configure | |
2313 | * the FCoE Controller from sysfs before enabling the FCoE Controller. | |
2314 | * | |
2315 | * Creating in with this routine starts the FCoE Controller in Fabric | |
2316 | * mode. The user can change to VN2VN or another mode before enabling. | |
2317 | */ | |
2318 | static int fcoe_ctlr_alloc(struct net_device *netdev) | |
2319 | { | |
2320 | return _fcoe_create(netdev, FIP_MODE_FABRIC, | |
2321 | FCOE_CREATE_LINK_DOWN); | |
2322 | } | |
2323 | ||
5e4f8fe7 RL |
2324 | /** |
2325 | * fcoe_link_ok() - Check if the link is OK for a local port | |
2326 | * @lport: The local port to check link on | |
2327 | * | |
2328 | * Returns: 0 if link is UP and OK, -1 if not | |
2329 | * | |
2330 | */ | |
7c9c6841 | 2331 | static int fcoe_link_ok(struct fc_lport *lport) |
5e4f8fe7 | 2332 | { |
8597ae8b | 2333 | struct net_device *netdev = fcoe_netdev(lport); |
5e4f8fe7 RL |
2334 | |
2335 | if (netif_oper_up(netdev)) | |
2336 | return 0; | |
2337 | return -1; | |
2338 | } | |
2339 | ||
34f42a07 | 2340 | /** |
1875f27e RL |
2341 | * fcoe_percpu_clean() - Clear all pending skbs for an local port |
2342 | * @lport: The local port whose skbs are to be cleared | |
e7a51997 JE |
2343 | * |
2344 | * Must be called with fcoe_create_mutex held to single-thread completion. | |
2345 | * | |
4b9bc86d SAS |
2346 | * This flushes the pending skbs by flush the work item for each CPU. The work |
2347 | * item on each possible CPU is flushed because we may have used the per-CPU | |
2348 | * struct of an offline CPU. | |
85b4aa49 | 2349 | */ |
7c9c6841 | 2350 | static void fcoe_percpu_clean(struct fc_lport *lport) |
85b4aa49 | 2351 | { |
85b4aa49 | 2352 | struct fcoe_percpu_s *pp; |
5e5e92df | 2353 | unsigned int cpu; |
85b4aa49 | 2354 | |
5e5e92df RL |
2355 | for_each_possible_cpu(cpu) { |
2356 | pp = &per_cpu(fcoe_percpu, cpu); | |
e7a51997 | 2357 | |
4b9bc86d | 2358 | flush_work(&pp->work); |
85b4aa49 RL |
2359 | } |
2360 | } | |
85b4aa49 | 2361 | |
34f42a07 | 2362 | /** |
1875f27e RL |
2363 | * fcoe_reset() - Reset a local port |
2364 | * @shost: The SCSI host associated with the local port to be reset | |
85b4aa49 | 2365 | * |
1875f27e | 2366 | * Returns: Always 0 (return value required by FC transport template) |
85b4aa49 | 2367 | */ |
7c9c6841 | 2368 | static int fcoe_reset(struct Scsi_Host *shost) |
85b4aa49 RL |
2369 | { |
2370 | struct fc_lport *lport = shost_priv(shost); | |
d2f80952 VD |
2371 | struct fcoe_port *port = lport_priv(lport); |
2372 | struct fcoe_interface *fcoe = port->priv; | |
619fe4be | 2373 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
435c8667 | 2374 | struct fcoe_ctlr_device *cdev = fcoe_ctlr_to_ctlr_dev(ctlr); |
d2f80952 | 2375 | |
619fe4be RL |
2376 | fcoe_ctlr_link_down(ctlr); |
2377 | fcoe_clean_pending_queue(ctlr->lp); | |
435c8667 RL |
2378 | |
2379 | if (cdev->enabled != FCOE_CTLR_DISABLED && | |
2380 | !fcoe_link_ok(ctlr->lp)) | |
619fe4be | 2381 | fcoe_ctlr_link_up(ctlr); |
85b4aa49 RL |
2382 | return 0; |
2383 | } | |
85b4aa49 | 2384 | |
34f42a07 | 2385 | /** |
1875f27e RL |
2386 | * fcoe_hostlist_lookup_port() - Find the FCoE interface associated with a net device |
2387 | * @netdev: The net device used as a key | |
85b4aa49 | 2388 | * |
1875f27e RL |
2389 | * Locking: Must be called with the RNL mutex held. |
2390 | * | |
2391 | * Returns: NULL or the FCoE interface | |
85b4aa49 | 2392 | */ |
014f5c3f | 2393 | static struct fcoe_interface * |
1875f27e | 2394 | fcoe_hostlist_lookup_port(const struct net_device *netdev) |
85b4aa49 | 2395 | { |
014f5c3f | 2396 | struct fcoe_interface *fcoe; |
85b4aa49 | 2397 | |
014f5c3f | 2398 | list_for_each_entry(fcoe, &fcoe_hostlist, list) { |
1875f27e | 2399 | if (fcoe->netdev == netdev) |
014f5c3f | 2400 | return fcoe; |
85b4aa49 | 2401 | } |
85b4aa49 RL |
2402 | return NULL; |
2403 | } | |
2404 | ||
34f42a07 | 2405 | /** |
1875f27e RL |
2406 | * fcoe_hostlist_lookup() - Find the local port associated with a |
2407 | * given net device | |
2408 | * @netdev: The netdevice used as a key | |
85b4aa49 | 2409 | * |
1875f27e RL |
2410 | * Locking: Must be called with the RTNL mutex held |
2411 | * | |
2412 | * Returns: NULL or the local port | |
85b4aa49 | 2413 | */ |
090eb6c4 | 2414 | static struct fc_lport *fcoe_hostlist_lookup(const struct net_device *netdev) |
85b4aa49 | 2415 | { |
619fe4be | 2416 | struct fcoe_ctlr *ctlr; |
014f5c3f | 2417 | struct fcoe_interface *fcoe; |
85b4aa49 | 2418 | |
014f5c3f | 2419 | fcoe = fcoe_hostlist_lookup_port(netdev); |
619fe4be RL |
2420 | ctlr = fcoe_to_ctlr(fcoe); |
2421 | return (fcoe) ? ctlr->lp : NULL; | |
85b4aa49 | 2422 | } |
85b4aa49 | 2423 | |
34f42a07 | 2424 | /** |
1875f27e RL |
2425 | * fcoe_hostlist_add() - Add the FCoE interface identified by a local |
2426 | * port to the hostlist | |
2427 | * @lport: The local port that identifies the FCoE interface to be added | |
85b4aa49 | 2428 | * |
090eb6c4 | 2429 | * Locking: must be called with the RTNL mutex held |
1875f27e RL |
2430 | * |
2431 | * Returns: 0 for success | |
85b4aa49 | 2432 | */ |
090eb6c4 | 2433 | static int fcoe_hostlist_add(const struct fc_lport *lport) |
85b4aa49 | 2434 | { |
014f5c3f CL |
2435 | struct fcoe_interface *fcoe; |
2436 | struct fcoe_port *port; | |
2437 | ||
2438 | fcoe = fcoe_hostlist_lookup_port(fcoe_netdev(lport)); | |
2439 | if (!fcoe) { | |
2440 | port = lport_priv(lport); | |
8597ae8b | 2441 | fcoe = port->priv; |
014f5c3f | 2442 | list_add_tail(&fcoe->list, &fcoe_hostlist); |
85b4aa49 RL |
2443 | } |
2444 | return 0; | |
2445 | } | |
85b4aa49 | 2446 | |
f9184df3 NH |
2447 | /** |
2448 | * fcoe_hostlist_del() - Remove the FCoE interface identified by a local | |
2449 | * port to the hostlist | |
2450 | * @lport: The local port that identifies the FCoE interface to be added | |
2451 | * | |
2452 | * Locking: must be called with the RTNL mutex held | |
2453 | * | |
2454 | */ | |
2455 | static void fcoe_hostlist_del(const struct fc_lport *lport) | |
2456 | { | |
2457 | struct fcoe_interface *fcoe; | |
2458 | struct fcoe_port *port; | |
2459 | ||
2460 | port = lport_priv(lport); | |
2461 | fcoe = port->priv; | |
2462 | list_del(&fcoe->list); | |
2463 | return; | |
2464 | } | |
78a58246 YZ |
2465 | |
2466 | static struct fcoe_transport fcoe_sw_transport = { | |
2467 | .name = {FCOE_TRANSPORT_DEFAULT}, | |
2468 | .attached = false, | |
2469 | .list = LIST_HEAD_INIT(fcoe_sw_transport.list), | |
2470 | .match = fcoe_match, | |
435c8667 | 2471 | .alloc = fcoe_ctlr_alloc, |
78a58246 YZ |
2472 | .create = fcoe_create, |
2473 | .destroy = fcoe_destroy, | |
2474 | .enable = fcoe_enable, | |
2475 | .disable = fcoe_disable, | |
2476 | }; | |
2477 | ||
85b4aa49 | 2478 | /** |
1875f27e | 2479 | * fcoe_init() - Initialize fcoe.ko |
85b4aa49 | 2480 | * |
1875f27e | 2481 | * Returns: 0 on success, or a negative value on failure |
34f42a07 | 2482 | */ |
85b4aa49 RL |
2483 | static int __init fcoe_init(void) |
2484 | { | |
1875f27e | 2485 | struct fcoe_percpu_s *p; |
38eccabd | 2486 | unsigned int cpu; |
8976f424 | 2487 | int rc = 0; |
85b4aa49 | 2488 | |
2ca32b48 TH |
2489 | fcoe_wq = alloc_workqueue("fcoe", 0, 0); |
2490 | if (!fcoe_wq) | |
2491 | return -ENOMEM; | |
2492 | ||
78a58246 YZ |
2493 | /* register as a fcoe transport */ |
2494 | rc = fcoe_transport_attach(&fcoe_sw_transport); | |
2495 | if (rc) { | |
2496 | printk(KERN_ERR "failed to register an fcoe transport, check " | |
2497 | "if libfcoe is loaded\n"); | |
a561a8ea | 2498 | goto out_destroy; |
78a58246 YZ |
2499 | } |
2500 | ||
dfc1d0fe CL |
2501 | mutex_lock(&fcoe_config_mutex); |
2502 | ||
38eccabd | 2503 | for_each_possible_cpu(cpu) { |
4b9bc86d SAS |
2504 | p = per_cpu_ptr(&fcoe_percpu, cpu); |
2505 | INIT_WORK(&p->work, fcoe_receive_work); | |
38eccabd RL |
2506 | skb_queue_head_init(&p->fcoe_rx_list); |
2507 | } | |
2508 | ||
8976f424 | 2509 | /* Setup link change notification */ |
85b4aa49 RL |
2510 | fcoe_dev_setup(); |
2511 | ||
5892c32f CL |
2512 | rc = fcoe_if_init(); |
2513 | if (rc) | |
2514 | goto out_free; | |
85b4aa49 | 2515 | |
dfc1d0fe | 2516 | mutex_unlock(&fcoe_config_mutex); |
85b4aa49 | 2517 | return 0; |
8976f424 RL |
2518 | |
2519 | out_free: | |
dfc1d0fe | 2520 | mutex_unlock(&fcoe_config_mutex); |
a561a8ea | 2521 | out_destroy: |
2ca32b48 | 2522 | destroy_workqueue(fcoe_wq); |
8976f424 | 2523 | return rc; |
85b4aa49 RL |
2524 | } |
2525 | module_init(fcoe_init); | |
2526 | ||
2527 | /** | |
1875f27e | 2528 | * fcoe_exit() - Clean up fcoe.ko |
85b4aa49 | 2529 | * |
1875f27e | 2530 | * Returns: 0 on success or a negative value on failure |
34f42a07 | 2531 | */ |
85b4aa49 RL |
2532 | static void __exit fcoe_exit(void) |
2533 | { | |
014f5c3f | 2534 | struct fcoe_interface *fcoe, *tmp; |
619fe4be | 2535 | struct fcoe_ctlr *ctlr; |
2e70e241 | 2536 | struct fcoe_port *port; |
1875f27e | 2537 | unsigned int cpu; |
85b4aa49 | 2538 | |
dfc1d0fe CL |
2539 | mutex_lock(&fcoe_config_mutex); |
2540 | ||
85b4aa49 RL |
2541 | fcoe_dev_cleanup(); |
2542 | ||
5919a595 | 2543 | /* releases the associated fcoe hosts */ |
090eb6c4 CL |
2544 | rtnl_lock(); |
2545 | list_for_each_entry_safe(fcoe, tmp, &fcoe_hostlist, list) { | |
619fe4be RL |
2546 | ctlr = fcoe_to_ctlr(fcoe); |
2547 | port = lport_priv(ctlr->lp); | |
f9184df3 | 2548 | fcoe_hostlist_del(port->lport); |
2ca32b48 | 2549 | queue_work(fcoe_wq, &port->destroy_work); |
c863df33 | 2550 | } |
090eb6c4 | 2551 | rtnl_unlock(); |
85b4aa49 | 2552 | |
4b9bc86d SAS |
2553 | for_each_possible_cpu(cpu) |
2554 | fcoe_thread_cleanup_local(cpu); | |
cd45ae38 | 2555 | |
dfc1d0fe | 2556 | mutex_unlock(&fcoe_config_mutex); |
2e70e241 | 2557 | |
2ca32b48 TH |
2558 | /* |
2559 | * destroy_work's may be chained but destroy_workqueue() | |
2560 | * can take care of them. Just kill the fcoe_wq. | |
2561 | */ | |
2562 | destroy_workqueue(fcoe_wq); | |
2e70e241 | 2563 | |
2ca32b48 TH |
2564 | /* |
2565 | * Detaching from the scsi transport must happen after all | |
2566 | * destroys are done on the fcoe_wq. destroy_workqueue will | |
2567 | * enusre the fcoe_wq is flushed. | |
2568 | */ | |
2e70e241 | 2569 | fcoe_if_exit(); |
78a58246 YZ |
2570 | |
2571 | /* detach from fcoe transport */ | |
2572 | fcoe_transport_detach(&fcoe_sw_transport); | |
85b4aa49 RL |
2573 | } |
2574 | module_exit(fcoe_exit); | |
11b56188 CL |
2575 | |
2576 | /** | |
2577 | * fcoe_flogi_resp() - FCoE specific FLOGI and FDISC response handler | |
2578 | * @seq: active sequence in the FLOGI or FDISC exchange | |
2579 | * @fp: response frame, or error encoded in a pointer (timeout) | |
2580 | * @arg: pointer the the fcoe_ctlr structure | |
2581 | * | |
65155b37 | 2582 | * This handles MAC address management for FCoE, then passes control on to |
11b56188 CL |
2583 | * the libfc FLOGI response handler. |
2584 | */ | |
2585 | static void fcoe_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, void *arg) | |
2586 | { | |
2587 | struct fcoe_ctlr *fip = arg; | |
2588 | struct fc_exch *exch = fc_seq_exch(seq); | |
2589 | struct fc_lport *lport = exch->lp; | |
2590 | u8 *mac; | |
2591 | ||
2592 | if (IS_ERR(fp)) | |
2593 | goto done; | |
2594 | ||
2595 | mac = fr_cb(fp)->granted_mac; | |
907c07d4 VD |
2596 | /* pre-FIP */ |
2597 | if (is_zero_ether_addr(mac)) | |
2598 | fcoe_ctlr_recv_flogi(fip, lport, fp); | |
2599 | if (!is_zero_ether_addr(mac)) | |
2600 | fcoe_update_src_mac(lport, mac); | |
11b56188 CL |
2601 | done: |
2602 | fc_lport_flogi_resp(seq, fp, lport); | |
2603 | } | |
2604 | ||
2605 | /** | |
2606 | * fcoe_logo_resp() - FCoE specific LOGO response handler | |
2607 | * @seq: active sequence in the LOGO exchange | |
2608 | * @fp: response frame, or error encoded in a pointer (timeout) | |
2609 | * @arg: pointer the the fcoe_ctlr structure | |
2610 | * | |
65155b37 | 2611 | * This handles MAC address management for FCoE, then passes control on to |
11b56188 CL |
2612 | * the libfc LOGO response handler. |
2613 | */ | |
2614 | static void fcoe_logo_resp(struct fc_seq *seq, struct fc_frame *fp, void *arg) | |
2615 | { | |
386309ce | 2616 | struct fc_lport *lport = arg; |
11b56188 CL |
2617 | static u8 zero_mac[ETH_ALEN] = { 0 }; |
2618 | ||
2619 | if (!IS_ERR(fp)) | |
386309ce | 2620 | fcoe_update_src_mac(lport, zero_mac); |
11b56188 CL |
2621 | fc_lport_logo_resp(seq, fp, lport); |
2622 | } | |
2623 | ||
2624 | /** | |
2625 | * fcoe_elsct_send - FCoE specific ELS handler | |
2626 | * | |
2627 | * This does special case handling of FIP encapsualted ELS exchanges for FCoE, | |
2628 | * using FCoE specific response handlers and passing the FIP controller as | |
2629 | * the argument (the lport is still available from the exchange). | |
2630 | * | |
2631 | * Most of the work here is just handed off to the libfc routine. | |
2632 | */ | |
1875f27e RL |
2633 | static struct fc_seq *fcoe_elsct_send(struct fc_lport *lport, u32 did, |
2634 | struct fc_frame *fp, unsigned int op, | |
2635 | void (*resp)(struct fc_seq *, | |
2636 | struct fc_frame *, | |
2637 | void *), | |
2638 | void *arg, u32 timeout) | |
11b56188 CL |
2639 | { |
2640 | struct fcoe_port *port = lport_priv(lport); | |
8597ae8b | 2641 | struct fcoe_interface *fcoe = port->priv; |
619fe4be | 2642 | struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe); |
11b56188 CL |
2643 | struct fc_frame_header *fh = fc_frame_header_get(fp); |
2644 | ||
2645 | switch (op) { | |
2646 | case ELS_FLOGI: | |
2647 | case ELS_FDISC: | |
e10f8c66 JE |
2648 | if (lport->point_to_multipoint) |
2649 | break; | |
11b56188 CL |
2650 | return fc_elsct_send(lport, did, fp, op, fcoe_flogi_resp, |
2651 | fip, timeout); | |
2652 | case ELS_LOGO: | |
2653 | /* only hook onto fabric logouts, not port logouts */ | |
2654 | if (ntoh24(fh->fh_d_id) != FC_FID_FLOGI) | |
2655 | break; | |
2656 | return fc_elsct_send(lport, did, fp, op, fcoe_logo_resp, | |
386309ce | 2657 | lport, timeout); |
11b56188 CL |
2658 | } |
2659 | return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); | |
2660 | } | |
2661 | ||
9a05753b CL |
2662 | /** |
2663 | * fcoe_vport_create() - create an fc_host/scsi_host for a vport | |
2664 | * @vport: fc_vport object to create a new fc_host for | |
2665 | * @disabled: start the new fc_host in a disabled state by default? | |
2666 | * | |
2667 | * Returns: 0 for success | |
2668 | */ | |
2669 | static int fcoe_vport_create(struct fc_vport *vport, bool disabled) | |
2670 | { | |
2671 | struct Scsi_Host *shost = vport_to_shost(vport); | |
2672 | struct fc_lport *n_port = shost_priv(shost); | |
2673 | struct fcoe_port *port = lport_priv(n_port); | |
8597ae8b | 2674 | struct fcoe_interface *fcoe = port->priv; |
9a05753b CL |
2675 | struct net_device *netdev = fcoe->netdev; |
2676 | struct fc_lport *vn_port; | |
bdf25218 NP |
2677 | int rc; |
2678 | char buf[32]; | |
2679 | ||
2680 | rc = fcoe_validate_vport_create(vport); | |
2681 | if (rc) { | |
d834895c | 2682 | fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); |
bdf25218 NP |
2683 | printk(KERN_ERR "fcoe: Failed to create vport, " |
2684 | "WWPN (0x%s) already exists\n", | |
2685 | buf); | |
2686 | return rc; | |
2687 | } | |
9a05753b CL |
2688 | |
2689 | mutex_lock(&fcoe_config_mutex); | |
4bc71cb9 | 2690 | rtnl_lock(); |
9a05753b | 2691 | vn_port = fcoe_if_create(fcoe, &vport->dev, 1); |
4bc71cb9 | 2692 | rtnl_unlock(); |
9a05753b CL |
2693 | mutex_unlock(&fcoe_config_mutex); |
2694 | ||
2695 | if (IS_ERR(vn_port)) { | |
2696 | printk(KERN_ERR "fcoe: fcoe_vport_create(%s) failed\n", | |
2697 | netdev->name); | |
2698 | return -EIO; | |
2699 | } | |
2700 | ||
2701 | if (disabled) { | |
2702 | fc_vport_set_state(vport, FC_VPORT_DISABLED); | |
2703 | } else { | |
2704 | vn_port->boot_time = jiffies; | |
2705 | fc_fabric_login(vn_port); | |
2706 | fc_vport_setlink(vn_port); | |
2707 | } | |
2708 | return 0; | |
2709 | } | |
2710 | ||
2711 | /** | |
2712 | * fcoe_vport_destroy() - destroy the fc_host/scsi_host for a vport | |
2713 | * @vport: fc_vport object that is being destroyed | |
2714 | * | |
2715 | * Returns: 0 for success | |
2716 | */ | |
2717 | static int fcoe_vport_destroy(struct fc_vport *vport) | |
2718 | { | |
2719 | struct Scsi_Host *shost = vport_to_shost(vport); | |
2720 | struct fc_lport *n_port = shost_priv(shost); | |
2721 | struct fc_lport *vn_port = vport->dd_data; | |
9a05753b CL |
2722 | |
2723 | mutex_lock(&n_port->lp_mutex); | |
2724 | list_del(&vn_port->list); | |
2725 | mutex_unlock(&n_port->lp_mutex); | |
ccefd23e RL |
2726 | |
2727 | mutex_lock(&fcoe_config_mutex); | |
2728 | fcoe_if_destroy(vn_port); | |
2729 | mutex_unlock(&fcoe_config_mutex); | |
2730 | ||
9a05753b CL |
2731 | return 0; |
2732 | } | |
2733 | ||
2734 | /** | |
2735 | * fcoe_vport_disable() - change vport state | |
2736 | * @vport: vport to bring online/offline | |
2737 | * @disable: should the vport be disabled? | |
2738 | */ | |
2739 | static int fcoe_vport_disable(struct fc_vport *vport, bool disable) | |
2740 | { | |
2741 | struct fc_lport *lport = vport->dd_data; | |
2742 | ||
2743 | if (disable) { | |
2744 | fc_vport_set_state(vport, FC_VPORT_DISABLED); | |
2745 | fc_fabric_logoff(lport); | |
2746 | } else { | |
2747 | lport->boot_time = jiffies; | |
2748 | fc_fabric_login(lport); | |
2749 | fc_vport_setlink(lport); | |
2750 | } | |
2751 | ||
2752 | return 0; | |
2753 | } | |
2754 | ||
dc8596d3 CL |
2755 | /** |
2756 | * fcoe_vport_set_symbolic_name() - append vport string to symbolic name | |
2757 | * @vport: fc_vport with a new symbolic name string | |
2758 | * | |
2759 | * After generating a new symbolic name string, a new RSPN_ID request is | |
2760 | * sent to the name server. There is no response handler, so if it fails | |
2761 | * for some reason it will not be retried. | |
2762 | */ | |
2763 | static void fcoe_set_vport_symbolic_name(struct fc_vport *vport) | |
2764 | { | |
2765 | struct fc_lport *lport = vport->dd_data; | |
2766 | struct fc_frame *fp; | |
2767 | size_t len; | |
2768 | ||
2769 | snprintf(fc_host_symbolic_name(lport->host), FC_SYMBOLIC_NAME_SIZE, | |
2770 | "%s v%s over %s : %s", FCOE_NAME, FCOE_VERSION, | |
2771 | fcoe_netdev(lport)->name, vport->symbolic_name); | |
2772 | ||
2773 | if (lport->state != LPORT_ST_READY) | |
2774 | return; | |
2775 | ||
2776 | len = strnlen(fc_host_symbolic_name(lport->host), 255); | |
2777 | fp = fc_frame_alloc(lport, | |
2778 | sizeof(struct fc_ct_hdr) + | |
2779 | sizeof(struct fc_ns_rspn) + len); | |
2780 | if (!fp) | |
2781 | return; | |
2782 | lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RSPN_ID, | |
b94f8951 | 2783 | NULL, NULL, 3 * lport->r_a_tov); |
dc8596d3 | 2784 | } |
b84056bf | 2785 | |
8d55e507 RL |
2786 | static void fcoe_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev) |
2787 | { | |
2788 | struct fcoe_ctlr_device *ctlr_dev = | |
2789 | fcoe_fcf_dev_to_ctlr_dev(fcf_dev); | |
2790 | struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev); | |
2791 | struct fcoe_interface *fcoe = fcoe_ctlr_priv(ctlr); | |
2792 | ||
2793 | fcf_dev->vlan_id = vlan_dev_vlan_id(fcoe->netdev); | |
2794 | } | |
2795 | ||
7d65b0df JE |
2796 | /** |
2797 | * fcoe_set_port_id() - Callback from libfc when Port_ID is set. | |
2798 | * @lport: the local port | |
2799 | * @port_id: the port ID | |
2800 | * @fp: the received frame, if any, that caused the port_id to be set. | |
2801 | * | |
2802 | * This routine handles the case where we received a FLOGI and are | |
2803 | * entering point-to-point mode. We need to call fcoe_ctlr_recv_flogi() | |
2804 | * so it can set the non-mapped mode and gateway address. | |
2805 | * | |
2806 | * The FLOGI LS_ACC is handled by fcoe_flogi_resp(). | |
2807 | */ | |
2808 | static void fcoe_set_port_id(struct fc_lport *lport, | |
2809 | u32 port_id, struct fc_frame *fp) | |
2810 | { | |
2811 | struct fcoe_port *port = lport_priv(lport); | |
8597ae8b | 2812 | struct fcoe_interface *fcoe = port->priv; |
619fe4be | 2813 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
7d65b0df JE |
2814 | |
2815 | if (fp && fc_frame_payload_op(fp) == ELS_FLOGI) | |
619fe4be | 2816 | fcoe_ctlr_recv_flogi(ctlr, lport, fp); |
7d65b0df | 2817 | } |