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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 | ||
62d57f20 | 66 | static unsigned int fcoe_e_d_tov = 2 * 1000; |
69aabcce HR |
67 | module_param_named(e_d_tov, fcoe_e_d_tov, int, S_IRUGO|S_IWUSR); |
68 | MODULE_PARM_DESC(e_d_tov, "E_D_TOV in ms, default 2000"); | |
69 | ||
62d57f20 | 70 | static unsigned int fcoe_r_a_tov = 2 * 2 * 1000; |
69aabcce HR |
71 | module_param_named(r_a_tov, fcoe_r_a_tov, int, S_IRUGO|S_IWUSR); |
72 | MODULE_PARM_DESC(r_a_tov, "R_A_TOV in ms, default 4000"); | |
73 | ||
7c9c6841 | 74 | static DEFINE_MUTEX(fcoe_config_mutex); |
dfc1d0fe | 75 | |
2ca32b48 TH |
76 | static struct workqueue_struct *fcoe_wq; |
77 | ||
85b4aa49 | 78 | /* fcoe host list */ |
090eb6c4 | 79 | /* must only by accessed under the RTNL mutex */ |
7c9c6841 BVA |
80 | static LIST_HEAD(fcoe_hostlist); |
81 | static DEFINE_PER_CPU(struct fcoe_percpu_s, fcoe_percpu); | |
85b4aa49 | 82 | |
dd3fd72e | 83 | /* Function Prototypes */ |
1875f27e | 84 | static int fcoe_reset(struct Scsi_Host *); |
fdd78027 VD |
85 | static int fcoe_xmit(struct fc_lport *, struct fc_frame *); |
86 | static int fcoe_rcv(struct sk_buff *, struct net_device *, | |
87 | struct packet_type *, struct net_device *); | |
1875f27e RL |
88 | static void fcoe_percpu_clean(struct fc_lport *); |
89 | static int fcoe_link_ok(struct fc_lport *); | |
fdd78027 VD |
90 | |
91 | static struct fc_lport *fcoe_hostlist_lookup(const struct net_device *); | |
92 | static int fcoe_hostlist_add(const struct fc_lport *); | |
f9184df3 | 93 | static void fcoe_hostlist_del(const struct fc_lport *); |
fdd78027 | 94 | |
85b4aa49 RL |
95 | static int fcoe_device_notification(struct notifier_block *, ulong, void *); |
96 | static void fcoe_dev_setup(void); | |
97 | static void fcoe_dev_cleanup(void); | |
1875f27e RL |
98 | static struct fcoe_interface |
99 | *fcoe_hostlist_lookup_port(const struct net_device *); | |
100 | ||
101 | static int fcoe_fip_recv(struct sk_buff *, struct net_device *, | |
102 | struct packet_type *, struct net_device *); | |
d242e668 HR |
103 | static int fcoe_fip_vlan_recv(struct sk_buff *, struct net_device *, |
104 | struct packet_type *, struct net_device *); | |
1875f27e RL |
105 | |
106 | static void fcoe_fip_send(struct fcoe_ctlr *, struct sk_buff *); | |
107 | static void fcoe_update_src_mac(struct fc_lport *, u8 *); | |
108 | static u8 *fcoe_get_src_mac(struct fc_lport *); | |
109 | static void fcoe_destroy_work(struct work_struct *); | |
110 | ||
111 | static int fcoe_ddp_setup(struct fc_lport *, u16, struct scatterlist *, | |
112 | unsigned int); | |
113 | static int fcoe_ddp_done(struct fc_lport *, u16); | |
71f89491 YZ |
114 | static int fcoe_ddp_target(struct fc_lport *, u16, struct scatterlist *, |
115 | unsigned int); | |
6f6c2aa3 | 116 | static int fcoe_dcb_app_notification(struct notifier_block *notifier, |
117 | ulong event, void *ptr); | |
1875f27e | 118 | |
78a58246 | 119 | static bool fcoe_match(struct net_device *netdev); |
1917d42d | 120 | static int fcoe_create(struct net_device *netdev, enum fip_mode fip_mode); |
78a58246 YZ |
121 | static int fcoe_destroy(struct net_device *netdev); |
122 | static int fcoe_enable(struct net_device *netdev); | |
123 | static int fcoe_disable(struct net_device *netdev); | |
1875f27e | 124 | |
435c8667 RL |
125 | /* fcoe_syfs control interface handlers */ |
126 | static int fcoe_ctlr_alloc(struct net_device *netdev); | |
127 | static int fcoe_ctlr_enabled(struct fcoe_ctlr_device *cdev); | |
a87dccc7 | 128 | static void fcoe_ctlr_mode(struct fcoe_ctlr_device *ctlr_dev); |
435c8667 | 129 | |
1875f27e RL |
130 | static struct fc_seq *fcoe_elsct_send(struct fc_lport *, |
131 | u32 did, struct fc_frame *, | |
132 | unsigned int op, | |
133 | void (*resp)(struct fc_seq *, | |
134 | struct fc_frame *, | |
135 | void *), | |
136 | void *, u32 timeout); | |
859b7b64 | 137 | static void fcoe_recv_frame(struct sk_buff *skb); |
1875f27e | 138 | |
1875f27e | 139 | /* notification function for packets from net device */ |
85b4aa49 RL |
140 | static struct notifier_block fcoe_notifier = { |
141 | .notifier_call = fcoe_device_notification, | |
142 | }; | |
143 | ||
6f6c2aa3 | 144 | /* notification function for DCB events */ |
145 | static struct notifier_block dcb_notifier = { | |
146 | .notifier_call = fcoe_dcb_app_notification, | |
147 | }; | |
148 | ||
8ca86f84 YZ |
149 | static struct scsi_transport_template *fcoe_nport_scsi_transport; |
150 | static struct scsi_transport_template *fcoe_vport_scsi_transport; | |
7f349142 | 151 | |
1875f27e RL |
152 | static int fcoe_vport_destroy(struct fc_vport *); |
153 | static int fcoe_vport_create(struct fc_vport *, bool disabled); | |
154 | static int fcoe_vport_disable(struct fc_vport *, bool disable); | |
155 | static void fcoe_set_vport_symbolic_name(struct fc_vport *); | |
7d65b0df | 156 | static void fcoe_set_port_id(struct fc_lport *, u32, struct fc_frame *); |
8d55e507 RL |
157 | static void fcoe_fcf_get_vlan_id(struct fcoe_fcf_device *); |
158 | ||
a87dccc7 | 159 | |
8d55e507 | 160 | static struct fcoe_sysfs_function_template fcoe_sysfs_templ = { |
a87dccc7 | 161 | .set_fcoe_ctlr_mode = fcoe_ctlr_mode, |
435c8667 | 162 | .set_fcoe_ctlr_enabled = fcoe_ctlr_enabled, |
8d55e507 RL |
163 | .get_fcoe_ctlr_link_fail = fcoe_ctlr_get_lesb, |
164 | .get_fcoe_ctlr_vlink_fail = fcoe_ctlr_get_lesb, | |
165 | .get_fcoe_ctlr_miss_fka = fcoe_ctlr_get_lesb, | |
166 | .get_fcoe_ctlr_symb_err = fcoe_ctlr_get_lesb, | |
167 | .get_fcoe_ctlr_err_block = fcoe_ctlr_get_lesb, | |
168 | .get_fcoe_ctlr_fcs_error = fcoe_ctlr_get_lesb, | |
169 | ||
170 | .get_fcoe_fcf_selected = fcoe_fcf_get_selected, | |
171 | .get_fcoe_fcf_vlan_id = fcoe_fcf_get_vlan_id, | |
172 | }; | |
1875f27e RL |
173 | |
174 | static struct libfc_function_template fcoe_libfc_fcn_templ = { | |
175 | .frame_send = fcoe_xmit, | |
176 | .ddp_setup = fcoe_ddp_setup, | |
177 | .ddp_done = fcoe_ddp_done, | |
71f89491 | 178 | .ddp_target = fcoe_ddp_target, |
1875f27e | 179 | .elsct_send = fcoe_elsct_send, |
b84056bf | 180 | .get_lesb = fcoe_get_lesb, |
7d65b0df | 181 | .lport_set_port_id = fcoe_set_port_id, |
1875f27e | 182 | }; |
9a05753b | 183 | |
7c9c6841 | 184 | static struct fc_function_template fcoe_nport_fc_functions = { |
7f349142 VD |
185 | .show_host_node_name = 1, |
186 | .show_host_port_name = 1, | |
187 | .show_host_supported_classes = 1, | |
188 | .show_host_supported_fc4s = 1, | |
189 | .show_host_active_fc4s = 1, | |
190 | .show_host_maxframe_size = 1, | |
9f71af2f NP |
191 | .show_host_serial_number = 1, |
192 | .show_host_manufacturer = 1, | |
193 | .show_host_model = 1, | |
194 | .show_host_model_description = 1, | |
195 | .show_host_hardware_version = 1, | |
196 | .show_host_driver_version = 1, | |
197 | .show_host_firmware_version = 1, | |
198 | .show_host_optionrom_version = 1, | |
7f349142 VD |
199 | |
200 | .show_host_port_id = 1, | |
201 | .show_host_supported_speeds = 1, | |
202 | .get_host_speed = fc_get_host_speed, | |
203 | .show_host_speed = 1, | |
204 | .show_host_port_type = 1, | |
205 | .get_host_port_state = fc_get_host_port_state, | |
206 | .show_host_port_state = 1, | |
207 | .show_host_symbolic_name = 1, | |
208 | ||
209 | .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv), | |
210 | .show_rport_maxframe_size = 1, | |
211 | .show_rport_supported_classes = 1, | |
212 | ||
213 | .show_host_fabric_name = 1, | |
214 | .show_starget_node_name = 1, | |
215 | .show_starget_port_name = 1, | |
216 | .show_starget_port_id = 1, | |
217 | .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, | |
218 | .show_rport_dev_loss_tmo = 1, | |
219 | .get_fc_host_stats = fc_get_host_stats, | |
220 | .issue_fc_host_lip = fcoe_reset, | |
221 | ||
222 | .terminate_rport_io = fc_rport_terminate_io, | |
9a05753b CL |
223 | |
224 | .vport_create = fcoe_vport_create, | |
225 | .vport_delete = fcoe_vport_destroy, | |
226 | .vport_disable = fcoe_vport_disable, | |
dc8596d3 | 227 | .set_vport_symbolic_name = fcoe_set_vport_symbolic_name, |
a51ab396 SM |
228 | |
229 | .bsg_request = fc_lport_bsg_request, | |
7f349142 VD |
230 | }; |
231 | ||
7c9c6841 | 232 | static struct fc_function_template fcoe_vport_fc_functions = { |
e9084bb8 CL |
233 | .show_host_node_name = 1, |
234 | .show_host_port_name = 1, | |
235 | .show_host_supported_classes = 1, | |
236 | .show_host_supported_fc4s = 1, | |
237 | .show_host_active_fc4s = 1, | |
238 | .show_host_maxframe_size = 1, | |
7e5adcfb NP |
239 | .show_host_serial_number = 1, |
240 | .show_host_manufacturer = 1, | |
241 | .show_host_model = 1, | |
242 | .show_host_model_description = 1, | |
243 | .show_host_hardware_version = 1, | |
244 | .show_host_driver_version = 1, | |
245 | .show_host_firmware_version = 1, | |
246 | .show_host_optionrom_version = 1, | |
e9084bb8 CL |
247 | |
248 | .show_host_port_id = 1, | |
249 | .show_host_supported_speeds = 1, | |
250 | .get_host_speed = fc_get_host_speed, | |
251 | .show_host_speed = 1, | |
252 | .show_host_port_type = 1, | |
253 | .get_host_port_state = fc_get_host_port_state, | |
254 | .show_host_port_state = 1, | |
255 | .show_host_symbolic_name = 1, | |
256 | ||
257 | .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv), | |
258 | .show_rport_maxframe_size = 1, | |
259 | .show_rport_supported_classes = 1, | |
260 | ||
261 | .show_host_fabric_name = 1, | |
262 | .show_starget_node_name = 1, | |
263 | .show_starget_port_name = 1, | |
264 | .show_starget_port_id = 1, | |
265 | .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, | |
266 | .show_rport_dev_loss_tmo = 1, | |
267 | .get_fc_host_stats = fc_get_host_stats, | |
268 | .issue_fc_host_lip = fcoe_reset, | |
269 | ||
270 | .terminate_rport_io = fc_rport_terminate_io, | |
a51ab396 SM |
271 | |
272 | .bsg_request = fc_lport_bsg_request, | |
e9084bb8 CL |
273 | }; |
274 | ||
7f349142 VD |
275 | static struct scsi_host_template fcoe_shost_template = { |
276 | .module = THIS_MODULE, | |
277 | .name = "FCoE Driver", | |
278 | .proc_name = FCOE_NAME, | |
279 | .queuecommand = fc_queuecommand, | |
b6a05c82 | 280 | .eh_timed_out = fc_eh_timed_out, |
7f349142 VD |
281 | .eh_abort_handler = fc_eh_abort, |
282 | .eh_device_reset_handler = fc_eh_device_reset, | |
283 | .eh_host_reset_handler = fc_eh_host_reset, | |
284 | .slave_alloc = fc_slave_alloc, | |
db5ed4df | 285 | .change_queue_depth = scsi_change_queue_depth, |
7f349142 | 286 | .this_id = -1, |
14caf44c | 287 | .cmd_per_lun = 3, |
7f349142 VD |
288 | .can_queue = FCOE_MAX_OUTSTANDING_COMMANDS, |
289 | .use_clustering = ENABLE_CLUSTERING, | |
290 | .sg_tablesize = SG_ALL, | |
291 | .max_sectors = 0xffff, | |
c40ecc12 | 292 | .track_queue_depth = 1, |
7f349142 VD |
293 | }; |
294 | ||
54b649f8 | 295 | /** |
1875f27e RL |
296 | * fcoe_interface_setup() - Setup a FCoE interface |
297 | * @fcoe: The new FCoE interface | |
298 | * @netdev: The net device that the fcoe interface is on | |
54b649f8 CL |
299 | * |
300 | * Returns : 0 for success | |
2e70e241 | 301 | * Locking: must be called with the RTNL mutex held |
54b649f8 CL |
302 | */ |
303 | static int fcoe_interface_setup(struct fcoe_interface *fcoe, | |
304 | struct net_device *netdev) | |
305 | { | |
619fe4be | 306 | struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe); |
54b649f8 | 307 | struct netdev_hw_addr *ha; |
5bab87e6 | 308 | struct net_device *real_dev; |
54b649f8 | 309 | u8 flogi_maddr[ETH_ALEN]; |
b7a727f1 | 310 | const struct net_device_ops *ops; |
54b649f8 CL |
311 | |
312 | fcoe->netdev = netdev; | |
313 | ||
b7a727f1 YZ |
314 | /* Let LLD initialize for FCoE */ |
315 | ops = netdev->netdev_ops; | |
316 | if (ops->ndo_fcoe_enable) { | |
317 | if (ops->ndo_fcoe_enable(netdev)) | |
318 | FCOE_NETDEV_DBG(netdev, "Failed to enable FCoE" | |
319 | " specific feature for LLD.\n"); | |
320 | } | |
321 | ||
54b649f8 | 322 | /* Do not support for bonding device */ |
cc8bdf06 | 323 | if (netdev->priv_flags & IFF_BONDING && netdev->flags & IFF_MASTER) { |
59d92516 | 324 | FCOE_NETDEV_DBG(netdev, "Bonded interfaces not supported\n"); |
54b649f8 CL |
325 | return -EOPNOTSUPP; |
326 | } | |
327 | ||
328 | /* look for SAN MAC address, if multiple SAN MACs exist, only | |
329 | * use the first one for SPMA */ | |
d0d7b10b | 330 | real_dev = is_vlan_dev(netdev) ? vlan_dev_real_dev(netdev) : netdev; |
d1483bb9 | 331 | fcoe->realdev = real_dev; |
54b649f8 | 332 | rcu_read_lock(); |
5bab87e6 | 333 | for_each_dev_addr(real_dev, ha) { |
54b649f8 | 334 | if ((ha->type == NETDEV_HW_ADDR_T_SAN) && |
bf361707 | 335 | (is_valid_ether_addr(ha->addr))) { |
54b649f8 CL |
336 | memcpy(fip->ctl_src_addr, ha->addr, ETH_ALEN); |
337 | fip->spma = 1; | |
338 | break; | |
339 | } | |
340 | } | |
341 | rcu_read_unlock(); | |
342 | ||
343 | /* setup Source Mac Address */ | |
344 | if (!fip->spma) | |
345 | memcpy(fip->ctl_src_addr, netdev->dev_addr, netdev->addr_len); | |
346 | ||
347 | /* | |
348 | * Add FCoE MAC address as second unicast MAC address | |
349 | * or enter promiscuous mode if not capable of listening | |
350 | * for multiple unicast MACs. | |
351 | */ | |
54b649f8 | 352 | memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN); |
a748ee24 | 353 | dev_uc_add(netdev, flogi_maddr); |
54b649f8 | 354 | if (fip->spma) |
a748ee24 | 355 | dev_uc_add(netdev, fip->ctl_src_addr); |
e10f8c66 JE |
356 | if (fip->mode == FIP_MODE_VN2VN) { |
357 | dev_mc_add(netdev, FIP_ALL_VN2VN_MACS); | |
358 | dev_mc_add(netdev, FIP_ALL_P2P_MACS); | |
359 | } else | |
360 | dev_mc_add(netdev, FIP_ALL_ENODE_MACS); | |
54b649f8 CL |
361 | |
362 | /* | |
363 | * setup the receive function from ethernet driver | |
364 | * on the ethertype for the given device | |
365 | */ | |
366 | fcoe->fcoe_packet_type.func = fcoe_rcv; | |
420fa211 | 367 | fcoe->fcoe_packet_type.type = htons(ETH_P_FCOE); |
54b649f8 CL |
368 | fcoe->fcoe_packet_type.dev = netdev; |
369 | dev_add_pack(&fcoe->fcoe_packet_type); | |
370 | ||
371 | fcoe->fip_packet_type.func = fcoe_fip_recv; | |
372 | fcoe->fip_packet_type.type = htons(ETH_P_FIP); | |
373 | fcoe->fip_packet_type.dev = netdev; | |
374 | dev_add_pack(&fcoe->fip_packet_type); | |
375 | ||
d242e668 HR |
376 | if (netdev != real_dev) { |
377 | fcoe->fip_vlan_packet_type.func = fcoe_fip_vlan_recv; | |
378 | fcoe->fip_vlan_packet_type.type = htons(ETH_P_FIP); | |
379 | fcoe->fip_vlan_packet_type.dev = real_dev; | |
380 | dev_add_pack(&fcoe->fip_vlan_packet_type); | |
381 | } | |
54b649f8 CL |
382 | return 0; |
383 | } | |
384 | ||
030f4e00 | 385 | /** |
1875f27e RL |
386 | * fcoe_interface_create() - Create a FCoE interface on a net device |
387 | * @netdev: The net device to create the FCoE interface on | |
1dd454d9 | 388 | * @fip_mode: The mode to use for FIP |
030f4e00 CL |
389 | * |
390 | * Returns: pointer to a struct fcoe_interface or NULL on error | |
391 | */ | |
1dd454d9 JE |
392 | static struct fcoe_interface *fcoe_interface_create(struct net_device *netdev, |
393 | enum fip_state fip_mode) | |
030f4e00 | 394 | { |
8d55e507 | 395 | struct fcoe_ctlr_device *ctlr_dev; |
619fe4be | 396 | struct fcoe_ctlr *ctlr; |
030f4e00 | 397 | struct fcoe_interface *fcoe; |
619fe4be | 398 | int size; |
59d92516 | 399 | int err; |
030f4e00 | 400 | |
7287fb91 RL |
401 | if (!try_module_get(THIS_MODULE)) { |
402 | FCOE_NETDEV_DBG(netdev, | |
403 | "Could not get a reference to the module\n"); | |
404 | fcoe = ERR_PTR(-EBUSY); | |
405 | goto out; | |
406 | } | |
407 | ||
619fe4be | 408 | size = sizeof(struct fcoe_ctlr) + sizeof(struct fcoe_interface); |
8d55e507 RL |
409 | ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &fcoe_sysfs_templ, |
410 | size); | |
411 | if (!ctlr_dev) { | |
412 | FCOE_DBG("Failed to add fcoe_ctlr_device\n"); | |
7287fb91 | 413 | fcoe = ERR_PTR(-ENOMEM); |
6f68794c | 414 | goto out_putmod; |
030f4e00 CL |
415 | } |
416 | ||
8d55e507 | 417 | ctlr = fcoe_ctlr_device_priv(ctlr_dev); |
9d34876f | 418 | ctlr->cdev = ctlr_dev; |
8d55e507 RL |
419 | fcoe = fcoe_ctlr_priv(ctlr); |
420 | ||
2e70e241 | 421 | dev_hold(netdev); |
54b649f8 CL |
422 | |
423 | /* | |
424 | * Initialize FIP. | |
425 | */ | |
619fe4be RL |
426 | fcoe_ctlr_init(ctlr, fip_mode); |
427 | ctlr->send = fcoe_fip_send; | |
428 | ctlr->update_mac = fcoe_update_src_mac; | |
429 | ctlr->get_src_addr = fcoe_get_src_mac; | |
54b649f8 | 430 | |
59d92516 | 431 | err = fcoe_interface_setup(fcoe, netdev); |
432 | if (err) { | |
619fe4be | 433 | fcoe_ctlr_destroy(ctlr); |
8d55e507 | 434 | fcoe_ctlr_device_delete(ctlr_dev); |
59d92516 | 435 | dev_put(netdev); |
7287fb91 | 436 | fcoe = ERR_PTR(err); |
6f68794c | 437 | goto out_putmod; |
59d92516 | 438 | } |
030f4e00 | 439 | |
7287fb91 RL |
440 | goto out; |
441 | ||
6f68794c | 442 | out_putmod: |
7287fb91 RL |
443 | module_put(THIS_MODULE); |
444 | out: | |
030f4e00 CL |
445 | return fcoe; |
446 | } | |
447 | ||
54b649f8 | 448 | /** |
433eba04 | 449 | * fcoe_interface_remove() - remove FCoE interface from netdev |
1875f27e | 450 | * @fcoe: The FCoE interface to be cleaned up |
2e70e241 CL |
451 | * |
452 | * Caller must be holding the RTNL mutex | |
54b649f8 | 453 | */ |
433eba04 | 454 | static void fcoe_interface_remove(struct fcoe_interface *fcoe) |
54b649f8 CL |
455 | { |
456 | struct net_device *netdev = fcoe->netdev; | |
619fe4be | 457 | struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe); |
54b649f8 | 458 | u8 flogi_maddr[ETH_ALEN]; |
b7a727f1 | 459 | const struct net_device_ops *ops; |
54b649f8 CL |
460 | |
461 | /* | |
462 | * Don't listen for Ethernet packets anymore. | |
463 | * synchronize_net() ensures that the packet handlers are not running | |
464 | * on another CPU. dev_remove_pack() would do that, this calls the | |
465 | * unsyncronized version __dev_remove_pack() to avoid multiple delays. | |
466 | */ | |
467 | __dev_remove_pack(&fcoe->fcoe_packet_type); | |
468 | __dev_remove_pack(&fcoe->fip_packet_type); | |
d242e668 HR |
469 | if (netdev != fcoe->realdev) |
470 | __dev_remove_pack(&fcoe->fip_vlan_packet_type); | |
54b649f8 CL |
471 | synchronize_net(); |
472 | ||
54b649f8 | 473 | /* Delete secondary MAC addresses */ |
54b649f8 | 474 | memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN); |
a748ee24 | 475 | dev_uc_del(netdev, flogi_maddr); |
54b649f8 | 476 | if (fip->spma) |
a748ee24 | 477 | dev_uc_del(netdev, fip->ctl_src_addr); |
e10f8c66 JE |
478 | if (fip->mode == FIP_MODE_VN2VN) { |
479 | dev_mc_del(netdev, FIP_ALL_VN2VN_MACS); | |
480 | dev_mc_del(netdev, FIP_ALL_P2P_MACS); | |
481 | } else | |
482 | dev_mc_del(netdev, FIP_ALL_ENODE_MACS); | |
b7a727f1 YZ |
483 | |
484 | /* Tell the LLD we are done w/ FCoE */ | |
485 | ops = netdev->netdev_ops; | |
486 | if (ops->ndo_fcoe_disable) { | |
487 | if (ops->ndo_fcoe_disable(netdev)) | |
488 | FCOE_NETDEV_DBG(netdev, "Failed to disable FCoE" | |
489 | " specific feature for LLD.\n"); | |
490 | } | |
433eba04 VD |
491 | fcoe->removed = 1; |
492 | } | |
493 | ||
494 | ||
495 | /** | |
496 | * fcoe_interface_cleanup() - Clean up a FCoE interface | |
497 | * @fcoe: The FCoE interface to be cleaned up | |
498 | */ | |
499 | static void fcoe_interface_cleanup(struct fcoe_interface *fcoe) | |
500 | { | |
501 | struct net_device *netdev = fcoe->netdev; | |
619fe4be | 502 | struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe); |
b2085a4e | 503 | |
433eba04 VD |
504 | rtnl_lock(); |
505 | if (!fcoe->removed) | |
506 | fcoe_interface_remove(fcoe); | |
848e7d5b RL |
507 | rtnl_unlock(); |
508 | ||
b2085a4e | 509 | /* Release the self-reference taken during fcoe_interface_create() */ |
1a8ef414 RL |
510 | /* tear-down the FCoE controller */ |
511 | fcoe_ctlr_destroy(fip); | |
619fe4be | 512 | scsi_host_put(fip->lp->host); |
1a8ef414 RL |
513 | dev_put(netdev); |
514 | module_put(THIS_MODULE); | |
030f4e00 CL |
515 | } |
516 | ||
ab6b85c1 | 517 | /** |
1875f27e RL |
518 | * fcoe_fip_recv() - Handler for received FIP frames |
519 | * @skb: The receive skb | |
520 | * @netdev: The associated net device | |
521 | * @ptype: The packet_type structure which was used to register this handler | |
78cfe97f | 522 | * @orig_dev: The original net_device the skb was received on. |
1875f27e | 523 | * (in case dev is a bond) |
ab6b85c1 VD |
524 | * |
525 | * Returns: 0 for success | |
526 | */ | |
1875f27e | 527 | static int fcoe_fip_recv(struct sk_buff *skb, struct net_device *netdev, |
ab6b85c1 VD |
528 | struct packet_type *ptype, |
529 | struct net_device *orig_dev) | |
530 | { | |
259ad85d | 531 | struct fcoe_interface *fcoe; |
619fe4be | 532 | struct fcoe_ctlr *ctlr; |
ab6b85c1 | 533 | |
259ad85d | 534 | fcoe = container_of(ptype, struct fcoe_interface, fip_packet_type); |
619fe4be RL |
535 | ctlr = fcoe_to_ctlr(fcoe); |
536 | fcoe_ctlr_recv(ctlr, skb); | |
ab6b85c1 VD |
537 | return 0; |
538 | } | |
539 | ||
d242e668 HR |
540 | /** |
541 | * fcoe_fip_vlan_recv() - Handler for received FIP VLAN discovery frames | |
542 | * @skb: The receive skb | |
543 | * @netdev: The associated net device | |
544 | * @ptype: The packet_type structure which was used to register this handler | |
78cfe97f | 545 | * @orig_dev: The original net_device the skb was received on. |
d242e668 HR |
546 | * (in case dev is a bond) |
547 | * | |
548 | * Returns: 0 for success | |
549 | */ | |
550 | static int fcoe_fip_vlan_recv(struct sk_buff *skb, struct net_device *netdev, | |
551 | struct packet_type *ptype, | |
552 | struct net_device *orig_dev) | |
553 | { | |
554 | struct fcoe_interface *fcoe; | |
555 | struct fcoe_ctlr *ctlr; | |
556 | ||
557 | fcoe = container_of(ptype, struct fcoe_interface, fip_vlan_packet_type); | |
558 | ctlr = fcoe_to_ctlr(fcoe); | |
559 | fcoe_ctlr_recv(ctlr, skb); | |
560 | return 0; | |
561 | } | |
562 | ||
980f5156 VD |
563 | /** |
564 | * fcoe_port_send() - Send an Ethernet-encapsulated FIP/FCoE frame | |
565 | * @port: The FCoE port | |
566 | * @skb: The FIP/FCoE packet to be sent | |
567 | */ | |
568 | static void fcoe_port_send(struct fcoe_port *port, struct sk_buff *skb) | |
569 | { | |
570 | if (port->fcoe_pending_queue.qlen) | |
571 | fcoe_check_wait_queue(port->lport, skb); | |
572 | else if (fcoe_start_io(skb)) | |
573 | fcoe_check_wait_queue(port->lport, skb); | |
574 | } | |
575 | ||
ab6b85c1 | 576 | /** |
1875f27e RL |
577 | * fcoe_fip_send() - Send an Ethernet-encapsulated FIP frame |
578 | * @fip: The FCoE controller | |
579 | * @skb: The FIP packet to be sent | |
ab6b85c1 VD |
580 | */ |
581 | static void fcoe_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) | |
582 | { | |
d242e668 HR |
583 | struct fcoe_interface *fcoe = fcoe_from_ctlr(fip); |
584 | struct fip_frame { | |
585 | struct ethhdr eth; | |
586 | struct fip_header fip; | |
587 | } __packed *frame; | |
588 | ||
589 | /* | |
590 | * Use default VLAN for FIP VLAN discovery protocol | |
591 | */ | |
592 | frame = (struct fip_frame *)skb->data; | |
f7e6ed06 HR |
593 | if (ntohs(frame->eth.h_proto) == ETH_P_FIP && |
594 | ntohs(frame->fip.fip_op) == FIP_OP_VLAN && | |
d242e668 HR |
595 | fcoe->realdev != fcoe->netdev) |
596 | skb->dev = fcoe->realdev; | |
597 | else | |
598 | skb->dev = fcoe->netdev; | |
980f5156 | 599 | fcoe_port_send(lport_priv(fip->lp), skb); |
ab6b85c1 VD |
600 | } |
601 | ||
602 | /** | |
1875f27e RL |
603 | * fcoe_update_src_mac() - Update the Ethernet MAC filters |
604 | * @lport: The local port to update the source MAC on | |
605 | * @addr: Unicast MAC address to add | |
ab6b85c1 VD |
606 | * |
607 | * Remove any previously-set unicast MAC filter. | |
608 | * Add secondary FCoE MAC address filter for our OUI. | |
609 | */ | |
11b56188 | 610 | static void fcoe_update_src_mac(struct fc_lport *lport, u8 *addr) |
ab6b85c1 | 611 | { |
11b56188 | 612 | struct fcoe_port *port = lport_priv(lport); |
8597ae8b | 613 | struct fcoe_interface *fcoe = port->priv; |
25024989 | 614 | |
11b56188 | 615 | if (!is_zero_ether_addr(port->data_src_addr)) |
a748ee24 | 616 | dev_uc_del(fcoe->netdev, port->data_src_addr); |
11b56188 | 617 | if (!is_zero_ether_addr(addr)) |
a748ee24 | 618 | dev_uc_add(fcoe->netdev, addr); |
11b56188 | 619 | memcpy(port->data_src_addr, addr, ETH_ALEN); |
ab6b85c1 VD |
620 | } |
621 | ||
11b56188 CL |
622 | /** |
623 | * fcoe_get_src_mac() - return the Ethernet source address for an lport | |
624 | * @lport: libfc lport | |
625 | */ | |
626 | static u8 *fcoe_get_src_mac(struct fc_lport *lport) | |
627 | { | |
628 | struct fcoe_port *port = lport_priv(lport); | |
629 | ||
630 | return port->data_src_addr; | |
631 | } | |
632 | ||
7f349142 | 633 | /** |
1875f27e RL |
634 | * fcoe_lport_config() - Set up a local port |
635 | * @lport: The local port to be setup | |
7f349142 VD |
636 | * |
637 | * Returns: 0 for success | |
638 | */ | |
1875f27e | 639 | static int fcoe_lport_config(struct fc_lport *lport) |
7f349142 | 640 | { |
1875f27e RL |
641 | lport->link_up = 0; |
642 | lport->qfull = 0; | |
643 | lport->max_retry_count = 3; | |
644 | lport->max_rport_retry_count = 3; | |
69aabcce HR |
645 | lport->e_d_tov = fcoe_e_d_tov; |
646 | lport->r_a_tov = fcoe_r_a_tov; | |
1875f27e RL |
647 | lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | |
648 | FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); | |
649 | lport->does_npiv = 1; | |
650 | ||
651 | fc_lport_init_stats(lport); | |
7f349142 VD |
652 | |
653 | /* lport fc_lport related configuration */ | |
1875f27e | 654 | fc_lport_config(lport); |
7f349142 VD |
655 | |
656 | /* offload related configuration */ | |
1875f27e RL |
657 | lport->crc_offload = 0; |
658 | lport->seq_offload = 0; | |
659 | lport->lro_enabled = 0; | |
660 | lport->lro_xid = 0; | |
661 | lport->lso_max = 0; | |
7f349142 VD |
662 | |
663 | return 0; | |
664 | } | |
665 | ||
54a5b21d YZ |
666 | /** |
667 | * fcoe_netdev_features_change - Updates the lport's offload flags based | |
668 | * on the LLD netdev's FCoE feature flags | |
669 | */ | |
670 | static void fcoe_netdev_features_change(struct fc_lport *lport, | |
671 | struct net_device *netdev) | |
672 | { | |
673 | mutex_lock(&lport->lp_mutex); | |
674 | ||
675 | if (netdev->features & NETIF_F_SG) | |
676 | lport->sg_supp = 1; | |
677 | else | |
678 | lport->sg_supp = 0; | |
679 | ||
680 | if (netdev->features & NETIF_F_FCOE_CRC) { | |
681 | lport->crc_offload = 1; | |
682 | FCOE_NETDEV_DBG(netdev, "Supports FCCRC offload\n"); | |
683 | } else { | |
684 | lport->crc_offload = 0; | |
685 | } | |
686 | ||
687 | if (netdev->features & NETIF_F_FSO) { | |
688 | lport->seq_offload = 1; | |
689 | lport->lso_max = netdev->gso_max_size; | |
690 | FCOE_NETDEV_DBG(netdev, "Supports LSO for max len 0x%x\n", | |
691 | lport->lso_max); | |
692 | } else { | |
693 | lport->seq_offload = 0; | |
694 | lport->lso_max = 0; | |
695 | } | |
696 | ||
697 | if (netdev->fcoe_ddp_xid) { | |
698 | lport->lro_enabled = 1; | |
699 | lport->lro_xid = netdev->fcoe_ddp_xid; | |
700 | FCOE_NETDEV_DBG(netdev, "Supports LRO for max xid 0x%x\n", | |
701 | lport->lro_xid); | |
702 | } else { | |
703 | lport->lro_enabled = 0; | |
704 | lport->lro_xid = 0; | |
705 | } | |
706 | ||
707 | mutex_unlock(&lport->lp_mutex); | |
708 | } | |
709 | ||
7f349142 | 710 | /** |
1875f27e RL |
711 | * fcoe_netdev_config() - Set up net devive for SW FCoE |
712 | * @lport: The local port that is associated with the net device | |
713 | * @netdev: The associated net device | |
7f349142 | 714 | * |
1875f27e | 715 | * Must be called after fcoe_lport_config() as it will use local port mutex |
7f349142 | 716 | * |
1875f27e | 717 | * Returns: 0 for success |
7f349142 | 718 | */ |
1875f27e | 719 | static int fcoe_netdev_config(struct fc_lport *lport, struct net_device *netdev) |
7f349142 VD |
720 | { |
721 | u32 mfs; | |
722 | u64 wwnn, wwpn; | |
25024989 | 723 | struct fcoe_interface *fcoe; |
619fe4be | 724 | struct fcoe_ctlr *ctlr; |
014f5c3f | 725 | struct fcoe_port *port; |
7f349142 VD |
726 | |
727 | /* Setup lport private data to point to fcoe softc */ | |
1875f27e | 728 | port = lport_priv(lport); |
8597ae8b | 729 | fcoe = port->priv; |
619fe4be | 730 | ctlr = fcoe_to_ctlr(fcoe); |
7f349142 | 731 | |
9a6cf881 | 732 | /* Figure out the VLAN ID, if any */ |
d0d7b10b | 733 | if (is_vlan_dev(netdev)) |
9a6cf881 HR |
734 | lport->vlan = vlan_dev_vlan_id(netdev); |
735 | else | |
736 | lport->vlan = 0; | |
737 | ||
7f349142 VD |
738 | /* |
739 | * Determine max frame size based on underlying device and optional | |
740 | * user-configured limit. If the MFS is too low, fcoe_link_ok() | |
741 | * will return 0, so do this first. | |
742 | */ | |
7221d7e5 YZ |
743 | mfs = netdev->mtu; |
744 | if (netdev->features & NETIF_F_FCOE_MTU) { | |
745 | mfs = FCOE_MTU; | |
746 | FCOE_NETDEV_DBG(netdev, "Supports FCOE_MTU of %d bytes\n", mfs); | |
747 | } | |
748 | mfs -= (sizeof(struct fcoe_hdr) + sizeof(struct fcoe_crc_eof)); | |
1875f27e | 749 | if (fc_set_mfs(lport, mfs)) |
7f349142 VD |
750 | return -EINVAL; |
751 | ||
7f349142 | 752 | /* offload features support */ |
54a5b21d | 753 | fcoe_netdev_features_change(lport, netdev); |
7f349142 | 754 | |
014f5c3f CL |
755 | skb_queue_head_init(&port->fcoe_pending_queue); |
756 | port->fcoe_pending_queue_active = 0; | |
1875f27e | 757 | setup_timer(&port->timer, fcoe_queue_timer, (unsigned long)lport); |
7f349142 | 758 | |
5e4f8fe7 RL |
759 | fcoe_link_speed_update(lport); |
760 | ||
1875f27e | 761 | if (!lport->vport) { |
dcece412 | 762 | if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN)) |
619fe4be | 763 | wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 1, 0); |
1875f27e | 764 | fc_set_wwnn(lport, wwnn); |
dcece412 | 765 | if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN)) |
619fe4be | 766 | wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, |
cf4aebca | 767 | 2, 0); |
1875f27e | 768 | fc_set_wwpn(lport, wwpn); |
9a05753b | 769 | } |
7f349142 | 770 | |
7f349142 VD |
771 | return 0; |
772 | } | |
773 | ||
774 | /** | |
1875f27e RL |
775 | * fcoe_shost_config() - Set up the SCSI host associated with a local port |
776 | * @lport: The local port | |
1875f27e | 777 | * @dev: The device associated with the SCSI host |
7f349142 VD |
778 | * |
779 | * Must be called after fcoe_lport_config() and fcoe_netdev_config() | |
780 | * | |
1875f27e | 781 | * Returns: 0 for success |
7f349142 | 782 | */ |
8ba00a4b | 783 | static int fcoe_shost_config(struct fc_lport *lport, struct device *dev) |
7f349142 VD |
784 | { |
785 | int rc = 0; | |
786 | ||
787 | /* lport scsi host config */ | |
1875f27e RL |
788 | lport->host->max_lun = FCOE_MAX_LUN; |
789 | lport->host->max_id = FCOE_MAX_FCP_TARGET; | |
790 | lport->host->max_channel = 0; | |
da87bfab VD |
791 | lport->host->max_cmd_len = FCOE_MAX_CMD_LEN; |
792 | ||
1875f27e | 793 | if (lport->vport) |
8ca86f84 | 794 | lport->host->transportt = fcoe_vport_scsi_transport; |
e9084bb8 | 795 | else |
8ca86f84 | 796 | lport->host->transportt = fcoe_nport_scsi_transport; |
7f349142 VD |
797 | |
798 | /* add the new host to the SCSI-ml */ | |
1875f27e | 799 | rc = scsi_add_host(lport->host, dev); |
7f349142 | 800 | if (rc) { |
1875f27e | 801 | FCOE_NETDEV_DBG(fcoe_netdev(lport), "fcoe_shost_config: " |
d5488eb9 | 802 | "error on scsi_add_host\n"); |
7f349142 VD |
803 | return rc; |
804 | } | |
9a05753b | 805 | |
1875f27e | 806 | if (!lport->vport) |
4be929be | 807 | fc_host_max_npiv_vports(lport->host) = USHRT_MAX; |
9a05753b | 808 | |
1875f27e | 809 | snprintf(fc_host_symbolic_name(lport->host), FC_SYMBOLIC_NAME_SIZE, |
5baa17c3 | 810 | "%s v%s over %s", FCOE_NAME, FCOE_VERSION, |
1875f27e | 811 | fcoe_netdev(lport)->name); |
7f349142 VD |
812 | |
813 | return 0; | |
814 | } | |
815 | ||
6fef3902 NP |
816 | |
817 | /** | |
818 | * fcoe_fdmi_info() - Get FDMI related info from net devive for SW FCoE | |
819 | * @lport: The local port that is associated with the net device | |
820 | * @netdev: The associated net device | |
821 | * | |
822 | * Must be called after fcoe_shost_config() as it will use local port mutex | |
823 | * | |
824 | */ | |
825 | static void fcoe_fdmi_info(struct fc_lport *lport, struct net_device *netdev) | |
826 | { | |
827 | struct fcoe_interface *fcoe; | |
828 | struct fcoe_port *port; | |
829 | struct net_device *realdev; | |
830 | int rc; | |
6fef3902 NP |
831 | |
832 | port = lport_priv(lport); | |
833 | fcoe = port->priv; | |
834 | realdev = fcoe->realdev; | |
835 | ||
6fef3902 NP |
836 | /* No FDMI state m/c for NPIV ports */ |
837 | if (lport->vport) | |
838 | return; | |
839 | ||
840 | if (realdev->netdev_ops->ndo_fcoe_get_hbainfo) { | |
f07d46bb NP |
841 | struct netdev_fcoe_hbainfo *fdmi; |
842 | fdmi = kzalloc(sizeof(*fdmi), GFP_KERNEL); | |
843 | if (!fdmi) | |
844 | return; | |
845 | ||
6fef3902 | 846 | rc = realdev->netdev_ops->ndo_fcoe_get_hbainfo(realdev, |
f07d46bb | 847 | fdmi); |
6fef3902 NP |
848 | if (rc) { |
849 | printk(KERN_INFO "fcoe: Failed to retrieve FDMI " | |
850 | "information from netdev.\n"); | |
851 | return; | |
852 | } | |
853 | ||
854 | snprintf(fc_host_serial_number(lport->host), | |
855 | FC_SERIAL_NUMBER_SIZE, | |
856 | "%s", | |
f07d46bb | 857 | fdmi->serial_number); |
6fef3902 NP |
858 | snprintf(fc_host_manufacturer(lport->host), |
859 | FC_SERIAL_NUMBER_SIZE, | |
860 | "%s", | |
f07d46bb | 861 | fdmi->manufacturer); |
6fef3902 NP |
862 | snprintf(fc_host_model(lport->host), |
863 | FC_SYMBOLIC_NAME_SIZE, | |
864 | "%s", | |
f07d46bb | 865 | fdmi->model); |
6fef3902 NP |
866 | snprintf(fc_host_model_description(lport->host), |
867 | FC_SYMBOLIC_NAME_SIZE, | |
868 | "%s", | |
f07d46bb | 869 | fdmi->model_description); |
6fef3902 NP |
870 | snprintf(fc_host_hardware_version(lport->host), |
871 | FC_VERSION_STRING_SIZE, | |
872 | "%s", | |
f07d46bb | 873 | fdmi->hardware_version); |
6fef3902 NP |
874 | snprintf(fc_host_driver_version(lport->host), |
875 | FC_VERSION_STRING_SIZE, | |
876 | "%s", | |
f07d46bb | 877 | fdmi->driver_version); |
6fef3902 NP |
878 | snprintf(fc_host_optionrom_version(lport->host), |
879 | FC_VERSION_STRING_SIZE, | |
880 | "%s", | |
f07d46bb | 881 | fdmi->optionrom_version); |
6fef3902 NP |
882 | snprintf(fc_host_firmware_version(lport->host), |
883 | FC_VERSION_STRING_SIZE, | |
884 | "%s", | |
f07d46bb | 885 | fdmi->firmware_version); |
6fef3902 NP |
886 | |
887 | /* Enable FDMI lport states */ | |
888 | lport->fdmi_enabled = 1; | |
f07d46bb | 889 | kfree(fdmi); |
6fef3902 NP |
890 | } else { |
891 | lport->fdmi_enabled = 0; | |
892 | printk(KERN_INFO "fcoe: No FDMI support.\n"); | |
893 | } | |
894 | } | |
895 | ||
1875f27e RL |
896 | /** |
897 | * fcoe_oem_match() - The match routine for the offloaded exchange manager | |
898 | * @fp: The I/O frame | |
d7179680 | 899 | * |
1875f27e RL |
900 | * This routine will be associated with an exchange manager (EM). When |
901 | * the libfc exchange handling code is looking for an EM to use it will | |
902 | * call this routine and pass it the frame that it wishes to send. This | |
903 | * routine will return True if the associated EM is to be used and False | |
904 | * if the echange code should continue looking for an EM. | |
905 | * | |
906 | * The offload EM that this routine is associated with will handle any | |
907 | * packets that are for SCSI read requests. | |
908 | * | |
1ff9918b KP |
909 | * This has been enhanced to work when FCoE stack is operating in target |
910 | * mode. | |
911 | * | |
1875f27e | 912 | * Returns: True for read types I/O, otherwise returns false. |
d7179680 | 913 | */ |
7c9c6841 | 914 | static bool fcoe_oem_match(struct fc_frame *fp) |
d7179680 | 915 | { |
1ff9918b KP |
916 | struct fc_frame_header *fh = fc_frame_header_get(fp); |
917 | struct fcp_cmnd *fcp; | |
918 | ||
919 | if (fc_fcp_is_read(fr_fsp(fp)) && | |
920 | (fr_fsp(fp)->data_len > fcoe_ddp_min)) | |
921 | return true; | |
a762dce4 YZ |
922 | else if ((fr_fsp(fp) == NULL) && |
923 | (fh->fh_r_ctl == FC_RCTL_DD_UNSOL_CMD) && | |
924 | (ntohs(fh->fh_rx_id) == FC_XID_UNKNOWN)) { | |
1ff9918b | 925 | fcp = fc_frame_payload_get(fp, sizeof(*fcp)); |
a762dce4 YZ |
926 | if ((fcp->fc_flags & FCP_CFL_WRDATA) && |
927 | (ntohl(fcp->fc_dl) > fcoe_ddp_min)) | |
1ff9918b KP |
928 | return true; |
929 | } | |
930 | return false; | |
d7179680 VD |
931 | } |
932 | ||
7f349142 | 933 | /** |
1875f27e RL |
934 | * fcoe_em_config() - Allocate and configure an exchange manager |
935 | * @lport: The local port that the new EM will be associated with | |
7f349142 | 936 | * |
1875f27e | 937 | * Returns: 0 on success |
7f349142 | 938 | */ |
1875f27e | 939 | static inline int fcoe_em_config(struct fc_lport *lport) |
7f349142 | 940 | { |
1875f27e | 941 | struct fcoe_port *port = lport_priv(lport); |
8597ae8b | 942 | struct fcoe_interface *fcoe = port->priv; |
25024989 | 943 | struct fcoe_interface *oldfcoe = NULL; |
1d1b88dc | 944 | struct net_device *old_real_dev, *cur_real_dev; |
d7179680 VD |
945 | u16 min_xid = FCOE_MIN_XID; |
946 | u16 max_xid = FCOE_MAX_XID; | |
947 | ||
948 | /* | |
949 | * Check if need to allocate an em instance for | |
950 | * offload exchange ids to be shared across all VN_PORTs/lport. | |
951 | */ | |
1875f27e RL |
952 | if (!lport->lro_enabled || !lport->lro_xid || |
953 | (lport->lro_xid >= max_xid)) { | |
954 | lport->lro_xid = 0; | |
d7179680 VD |
955 | goto skip_oem; |
956 | } | |
957 | ||
958 | /* | |
959 | * Reuse existing offload em instance in case | |
1d1b88dc | 960 | * it is already allocated on real eth device |
d7179680 | 961 | */ |
d0d7b10b | 962 | if (is_vlan_dev(fcoe->netdev)) |
25024989 | 963 | cur_real_dev = vlan_dev_real_dev(fcoe->netdev); |
1d1b88dc | 964 | else |
25024989 | 965 | cur_real_dev = fcoe->netdev; |
1d1b88dc | 966 | |
25024989 | 967 | list_for_each_entry(oldfcoe, &fcoe_hostlist, list) { |
d0d7b10b | 968 | if (is_vlan_dev(oldfcoe->netdev)) |
25024989 | 969 | old_real_dev = vlan_dev_real_dev(oldfcoe->netdev); |
1d1b88dc | 970 | else |
25024989 | 971 | old_real_dev = oldfcoe->netdev; |
1d1b88dc VD |
972 | |
973 | if (cur_real_dev == old_real_dev) { | |
991cbb60 | 974 | fcoe->oem = oldfcoe->oem; |
d7179680 VD |
975 | break; |
976 | } | |
977 | } | |
978 | ||
991cbb60 | 979 | if (fcoe->oem) { |
1875f27e | 980 | if (!fc_exch_mgr_add(lport, fcoe->oem, fcoe_oem_match)) { |
d7179680 VD |
981 | printk(KERN_ERR "fcoe_em_config: failed to add " |
982 | "offload em:%p on interface:%s\n", | |
991cbb60 | 983 | fcoe->oem, fcoe->netdev->name); |
d7179680 VD |
984 | return -ENOMEM; |
985 | } | |
986 | } else { | |
1875f27e RL |
987 | fcoe->oem = fc_exch_mgr_alloc(lport, FC_CLASS_3, |
988 | FCOE_MIN_XID, lport->lro_xid, | |
989 | fcoe_oem_match); | |
991cbb60 | 990 | if (!fcoe->oem) { |
d7179680 VD |
991 | printk(KERN_ERR "fcoe_em_config: failed to allocate " |
992 | "em for offload exches on interface:%s\n", | |
25024989 | 993 | fcoe->netdev->name); |
d7179680 VD |
994 | return -ENOMEM; |
995 | } | |
996 | } | |
997 | ||
998 | /* | |
999 | * Exclude offload EM xid range from next EM xid range. | |
1000 | */ | |
1875f27e | 1001 | min_xid += lport->lro_xid + 1; |
d7179680 VD |
1002 | |
1003 | skip_oem: | |
1875f27e | 1004 | if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, min_xid, max_xid, NULL)) { |
d7179680 | 1005 | printk(KERN_ERR "fcoe_em_config: failed to " |
25024989 | 1006 | "allocate em on interface %s\n", fcoe->netdev->name); |
7f349142 | 1007 | return -ENOMEM; |
d7179680 | 1008 | } |
7f349142 VD |
1009 | |
1010 | return 0; | |
1011 | } | |
1012 | ||
1013 | /** | |
1875f27e RL |
1014 | * fcoe_if_destroy() - Tear down a SW FCoE instance |
1015 | * @lport: The local port to be destroyed | |
34ce27bc | 1016 | * |
7f349142 | 1017 | */ |
af7f85d9 | 1018 | static void fcoe_if_destroy(struct fc_lport *lport) |
7f349142 | 1019 | { |
b2085a4e NP |
1020 | struct fcoe_port *port = lport_priv(lport); |
1021 | struct fcoe_interface *fcoe = port->priv; | |
1022 | struct net_device *netdev = fcoe->netdev; | |
1023 | ||
1024 | FCOE_NETDEV_DBG(netdev, "Destroying interface\n"); | |
1025 | ||
1026 | /* Logout of the fabric */ | |
1027 | fc_fabric_logoff(lport); | |
1028 | ||
1029 | /* Cleanup the fc_lport */ | |
1030 | fc_lport_destroy(lport); | |
1031 | ||
1032 | /* Stop the transmit retry timer */ | |
1033 | del_timer_sync(&port->timer); | |
1034 | ||
1035 | /* Free existing transmit skbs */ | |
1036 | fcoe_clean_pending_queue(lport); | |
1037 | ||
1038 | rtnl_lock(); | |
1039 | if (!is_zero_ether_addr(port->data_src_addr)) | |
1040 | dev_uc_del(netdev, port->data_src_addr); | |
433eba04 VD |
1041 | if (lport->vport) |
1042 | synchronize_net(); | |
1043 | else | |
1044 | fcoe_interface_remove(fcoe); | |
b2085a4e NP |
1045 | rtnl_unlock(); |
1046 | ||
f161fb72 | 1047 | /* Free queued packets for the per-CPU receive threads */ |
af7f85d9 | 1048 | fcoe_percpu_clean(lport); |
f161fb72 | 1049 | |
7f349142 | 1050 | /* Detach from the scsi-ml */ |
af7f85d9 CL |
1051 | fc_remove_host(lport->host); |
1052 | scsi_remove_host(lport->host); | |
7f349142 | 1053 | |
80e736f8 YZ |
1054 | /* Destroy lport scsi_priv */ |
1055 | fc_fcp_destroy(lport); | |
1056 | ||
7f349142 | 1057 | /* There are no more rports or I/O, free the EM */ |
af7f85d9 | 1058 | fc_exch_mgr_free(lport); |
7f349142 | 1059 | |
7f349142 | 1060 | /* Free memory used by statistical counters */ |
af7f85d9 | 1061 | fc_lport_free_stats(lport); |
7f349142 | 1062 | |
3cab4468 VD |
1063 | /* |
1064 | * Release the Scsi_Host for vport but hold on to | |
1065 | * master lport until it fcoe interface fully cleaned-up. | |
1066 | */ | |
1067 | if (lport->vport) | |
1068 | scsi_host_put(lport->host); | |
7f349142 VD |
1069 | } |
1070 | ||
1875f27e RL |
1071 | /** |
1072 | * fcoe_ddp_setup() - Call a LLD's ddp_setup through the net device | |
1073 | * @lport: The local port to setup DDP for | |
1074 | * @xid: The exchange ID for this DDP transfer | |
1075 | * @sgl: The scatterlist describing this transfer | |
1076 | * @sgc: The number of sg items | |
7f349142 | 1077 | * |
1875f27e | 1078 | * Returns: 0 if the DDP context was not configured |
7f349142 | 1079 | */ |
1875f27e RL |
1080 | static int fcoe_ddp_setup(struct fc_lport *lport, u16 xid, |
1081 | struct scatterlist *sgl, unsigned int sgc) | |
7f349142 | 1082 | { |
1875f27e | 1083 | struct net_device *netdev = fcoe_netdev(lport); |
7f349142 | 1084 | |
1875f27e RL |
1085 | if (netdev->netdev_ops->ndo_fcoe_ddp_setup) |
1086 | return netdev->netdev_ops->ndo_fcoe_ddp_setup(netdev, | |
1087 | xid, sgl, | |
1088 | sgc); | |
7f349142 VD |
1089 | |
1090 | return 0; | |
1091 | } | |
1092 | ||
71f89491 YZ |
1093 | /** |
1094 | * fcoe_ddp_target() - Call a LLD's ddp_target through the net device | |
1095 | * @lport: The local port to setup DDP for | |
1096 | * @xid: The exchange ID for this DDP transfer | |
1097 | * @sgl: The scatterlist describing this transfer | |
1098 | * @sgc: The number of sg items | |
1099 | * | |
1100 | * Returns: 0 if the DDP context was not configured | |
1101 | */ | |
1102 | static int fcoe_ddp_target(struct fc_lport *lport, u16 xid, | |
1103 | struct scatterlist *sgl, unsigned int sgc) | |
1104 | { | |
1105 | struct net_device *netdev = fcoe_netdev(lport); | |
1106 | ||
1107 | if (netdev->netdev_ops->ndo_fcoe_ddp_target) | |
1108 | return netdev->netdev_ops->ndo_fcoe_ddp_target(netdev, xid, | |
1109 | sgl, sgc); | |
1110 | ||
1111 | return 0; | |
1112 | } | |
1113 | ||
1114 | ||
1875f27e RL |
1115 | /** |
1116 | * fcoe_ddp_done() - Call a LLD's ddp_done through the net device | |
1117 | * @lport: The local port to complete DDP on | |
1118 | * @xid: The exchange ID for this DDP transfer | |
7f349142 | 1119 | * |
1875f27e | 1120 | * Returns: the length of data that have been completed by DDP |
7f349142 | 1121 | */ |
1875f27e | 1122 | static int fcoe_ddp_done(struct fc_lport *lport, u16 xid) |
7f349142 | 1123 | { |
1875f27e | 1124 | struct net_device *netdev = fcoe_netdev(lport); |
7f349142 | 1125 | |
1875f27e RL |
1126 | if (netdev->netdev_ops->ndo_fcoe_ddp_done) |
1127 | return netdev->netdev_ops->ndo_fcoe_ddp_done(netdev, xid); | |
7f349142 VD |
1128 | return 0; |
1129 | } | |
1130 | ||
7f349142 | 1131 | /** |
1875f27e RL |
1132 | * fcoe_if_create() - Create a FCoE instance on an interface |
1133 | * @fcoe: The FCoE interface to create a local port on | |
1134 | * @parent: The device pointer to be the parent in sysfs for the SCSI host | |
1135 | * @npiv: Indicates if the port is a vport or not | |
7f349142 | 1136 | * |
1875f27e | 1137 | * Creates a fc_lport instance and a Scsi_Host instance and configure them. |
7f349142 | 1138 | * |
1875f27e | 1139 | * Returns: The allocated fc_lport or an error pointer |
7f349142 | 1140 | */ |
030f4e00 | 1141 | static struct fc_lport *fcoe_if_create(struct fcoe_interface *fcoe, |
9a05753b | 1142 | struct device *parent, int npiv) |
7f349142 | 1143 | { |
619fe4be | 1144 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
1875f27e | 1145 | struct net_device *netdev = fcoe->netdev; |
72fa396b | 1146 | struct fc_lport *lport, *n_port; |
014f5c3f | 1147 | struct fcoe_port *port; |
72fa396b | 1148 | struct Scsi_Host *shost; |
1875f27e | 1149 | int rc; |
9a05753b CL |
1150 | /* |
1151 | * parent is only a vport if npiv is 1, | |
1152 | * but we'll only use vport in that case so go ahead and set it | |
1153 | */ | |
1154 | struct fc_vport *vport = dev_to_vport(parent); | |
7f349142 | 1155 | |
d5488eb9 | 1156 | FCOE_NETDEV_DBG(netdev, "Create Interface\n"); |
7f349142 | 1157 | |
72fa396b VD |
1158 | if (!npiv) |
1159 | lport = libfc_host_alloc(&fcoe_shost_template, sizeof(*port)); | |
1160 | else | |
1161 | lport = libfc_vport_create(vport, sizeof(*port)); | |
1162 | ||
86221969 | 1163 | if (!lport) { |
d5488eb9 | 1164 | FCOE_NETDEV_DBG(netdev, "Could not allocate host structure\n"); |
af7f85d9 | 1165 | rc = -ENOMEM; |
030f4e00 | 1166 | goto out; |
7f349142 | 1167 | } |
014f5c3f | 1168 | port = lport_priv(lport); |
2e70e241 | 1169 | port->lport = lport; |
8597ae8b | 1170 | port->priv = fcoe; |
66524ec9 | 1171 | port->get_netdev = fcoe_netdev; |
8597ae8b BPG |
1172 | port->max_queue_depth = FCOE_MAX_QUEUE_DEPTH; |
1173 | port->min_queue_depth = FCOE_MIN_QUEUE_DEPTH; | |
2e70e241 | 1174 | INIT_WORK(&port->destroy_work, fcoe_destroy_work); |
7f349142 | 1175 | |
f9184df3 NH |
1176 | /* |
1177 | * Need to add the lport to the hostlist | |
1178 | * so we catch NETDEV_CHANGE events. | |
1179 | */ | |
1180 | fcoe_hostlist_add(lport); | |
1181 | ||
1875f27e | 1182 | /* configure a fc_lport including the exchange manager */ |
af7f85d9 | 1183 | rc = fcoe_lport_config(lport); |
7f349142 | 1184 | if (rc) { |
d5488eb9 RL |
1185 | FCOE_NETDEV_DBG(netdev, "Could not configure lport for the " |
1186 | "interface\n"); | |
7f349142 VD |
1187 | goto out_host_put; |
1188 | } | |
1189 | ||
9a05753b | 1190 | if (npiv) { |
9f8f3aa6 CL |
1191 | FCOE_NETDEV_DBG(netdev, "Setting vport names, " |
1192 | "%16.16llx %16.16llx\n", | |
1875f27e | 1193 | vport->node_name, vport->port_name); |
9a05753b CL |
1194 | fc_set_wwnn(lport, vport->node_name); |
1195 | fc_set_wwpn(lport, vport->port_name); | |
1196 | } | |
1197 | ||
ab6b85c1 | 1198 | /* configure lport network properties */ |
af7f85d9 | 1199 | rc = fcoe_netdev_config(lport, netdev); |
ab6b85c1 | 1200 | if (rc) { |
d5488eb9 RL |
1201 | FCOE_NETDEV_DBG(netdev, "Could not configure netdev for the " |
1202 | "interface\n"); | |
54b649f8 | 1203 | goto out_lp_destroy; |
ab6b85c1 | 1204 | } |
97c8389d | 1205 | |
7f349142 | 1206 | /* configure lport scsi host properties */ |
8ba00a4b | 1207 | rc = fcoe_shost_config(lport, parent); |
7f349142 | 1208 | if (rc) { |
d5488eb9 RL |
1209 | FCOE_NETDEV_DBG(netdev, "Could not configure shost for the " |
1210 | "interface\n"); | |
54b649f8 | 1211 | goto out_lp_destroy; |
7f349142 VD |
1212 | } |
1213 | ||
96316099 | 1214 | /* Initialize the library */ |
619fe4be | 1215 | rc = fcoe_libfc_config(lport, ctlr, &fcoe_libfc_fcn_templ, 1); |
7f349142 | 1216 | if (rc) { |
96316099 | 1217 | FCOE_NETDEV_DBG(netdev, "Could not configure libfc for the " |
d5488eb9 | 1218 | "interface\n"); |
96316099 | 1219 | goto out_lp_destroy; |
7f349142 VD |
1220 | } |
1221 | ||
6fef3902 NP |
1222 | /* Initialized FDMI information */ |
1223 | fcoe_fdmi_info(lport, netdev); | |
1224 | ||
72fa396b VD |
1225 | /* |
1226 | * fcoe_em_alloc() and fcoe_hostlist_add() both | |
1227 | * need to be atomic with respect to other changes to the | |
1228 | * hostlist since fcoe_em_alloc() looks for an existing EM | |
1229 | * instance on host list updated by fcoe_hostlist_add(). | |
1230 | * | |
1231 | * This is currently handled through the fcoe_config_mutex | |
1232 | * begin held. | |
1233 | */ | |
1234 | if (!npiv) | |
9a05753b CL |
1235 | /* lport exch manager allocation */ |
1236 | rc = fcoe_em_config(lport); | |
72fa396b VD |
1237 | else { |
1238 | shost = vport_to_shost(vport); | |
1239 | n_port = shost_priv(shost); | |
1240 | rc = fc_exch_mgr_list_clone(n_port, lport); | |
1241 | } | |
1242 | ||
1243 | if (rc) { | |
1244 | FCOE_NETDEV_DBG(netdev, "Could not configure the EM\n"); | |
1245 | goto out_lp_destroy; | |
7f349142 VD |
1246 | } |
1247 | ||
af7f85d9 | 1248 | return lport; |
7f349142 VD |
1249 | |
1250 | out_lp_destroy: | |
af7f85d9 | 1251 | fc_exch_mgr_free(lport); |
7f349142 | 1252 | out_host_put: |
f9184df3 | 1253 | fcoe_hostlist_del(lport); |
af7f85d9 CL |
1254 | scsi_host_put(lport->host); |
1255 | out: | |
1256 | return ERR_PTR(rc); | |
7f349142 VD |
1257 | } |
1258 | ||
1259 | /** | |
1875f27e | 1260 | * fcoe_if_init() - Initialization routine for fcoe.ko |
7f349142 | 1261 | * |
1875f27e RL |
1262 | * Attaches the SW FCoE transport to the FC transport |
1263 | * | |
1264 | * Returns: 0 on success | |
7f349142 VD |
1265 | */ |
1266 | static int __init fcoe_if_init(void) | |
1267 | { | |
1268 | /* attach to scsi transport */ | |
8ca86f84 YZ |
1269 | fcoe_nport_scsi_transport = |
1270 | fc_attach_transport(&fcoe_nport_fc_functions); | |
1271 | fcoe_vport_scsi_transport = | |
1272 | fc_attach_transport(&fcoe_vport_fc_functions); | |
7f349142 | 1273 | |
8ca86f84 | 1274 | if (!fcoe_nport_scsi_transport) { |
d5488eb9 | 1275 | printk(KERN_ERR "fcoe: Failed to attach to the FC transport\n"); |
7f349142 VD |
1276 | return -ENODEV; |
1277 | } | |
1278 | ||
1279 | return 0; | |
1280 | } | |
1281 | ||
1282 | /** | |
1875f27e RL |
1283 | * fcoe_if_exit() - Tear down fcoe.ko |
1284 | * | |
1285 | * Detaches the SW FCoE transport from the FC transport | |
7f349142 | 1286 | * |
1875f27e | 1287 | * Returns: 0 on success |
7f349142 | 1288 | */ |
7c9c6841 | 1289 | static int __exit fcoe_if_exit(void) |
7f349142 | 1290 | { |
8ca86f84 YZ |
1291 | fc_release_transport(fcoe_nport_scsi_transport); |
1292 | fc_release_transport(fcoe_vport_scsi_transport); | |
1293 | fcoe_nport_scsi_transport = NULL; | |
1294 | fcoe_vport_scsi_transport = NULL; | |
7f349142 VD |
1295 | return 0; |
1296 | } | |
1297 | ||
4b9bc86d | 1298 | static void fcoe_thread_cleanup_local(unsigned int cpu) |
8976f424 | 1299 | { |
8976f424 | 1300 | struct page *crc_eof; |
4b9bc86d | 1301 | struct fcoe_percpu_s *p; |
8976f424 | 1302 | |
4b9bc86d | 1303 | p = per_cpu_ptr(&fcoe_percpu, cpu); |
8976f424 | 1304 | spin_lock_bh(&p->fcoe_rx_list.lock); |
8976f424 RL |
1305 | crc_eof = p->crc_eof_page; |
1306 | p->crc_eof_page = NULL; | |
1307 | p->crc_eof_offset = 0; | |
1308 | spin_unlock_bh(&p->fcoe_rx_list.lock); | |
1309 | ||
8976f424 RL |
1310 | if (crc_eof) |
1311 | put_page(crc_eof); | |
4b9bc86d | 1312 | flush_work(&p->work); |
8976f424 RL |
1313 | } |
1314 | ||
064287ee KP |
1315 | /** |
1316 | * fcoe_select_cpu() - Selects CPU to handle post-processing of incoming | |
1317 | * command. | |
064287ee | 1318 | * |
d272281c VD |
1319 | * This routine selects next CPU based on cpumask to distribute |
1320 | * incoming requests in round robin. | |
064287ee | 1321 | * |
d272281c | 1322 | * Returns: int CPU number |
064287ee | 1323 | */ |
d272281c | 1324 | static inline unsigned int fcoe_select_cpu(void) |
064287ee KP |
1325 | { |
1326 | static unsigned int selected_cpu; | |
1327 | ||
d272281c VD |
1328 | selected_cpu = cpumask_next(selected_cpu, cpu_online_mask); |
1329 | if (selected_cpu >= nr_cpu_ids) | |
1330 | selected_cpu = cpumask_first(cpu_online_mask); | |
1331 | ||
064287ee KP |
1332 | return selected_cpu; |
1333 | } | |
1334 | ||
85b4aa49 | 1335 | /** |
1875f27e RL |
1336 | * fcoe_rcv() - Receive packets from a net device |
1337 | * @skb: The received packet | |
1338 | * @netdev: The net device that the packet was received on | |
1339 | * @ptype: The packet type context | |
1340 | * @olddev: The last device net device | |
85b4aa49 | 1341 | * |
1875f27e RL |
1342 | * This routine is called by NET_RX_SOFTIRQ. It receives a packet, builds a |
1343 | * FC frame and passes the frame to libfc. | |
85b4aa49 RL |
1344 | * |
1345 | * Returns: 0 for success | |
34f42a07 | 1346 | */ |
7c9c6841 | 1347 | static int fcoe_rcv(struct sk_buff *skb, struct net_device *netdev, |
85b4aa49 RL |
1348 | struct packet_type *ptype, struct net_device *olddev) |
1349 | { | |
1875f27e | 1350 | struct fc_lport *lport; |
85b4aa49 | 1351 | struct fcoe_rcv_info *fr; |
619fe4be | 1352 | struct fcoe_ctlr *ctlr; |
259ad85d | 1353 | struct fcoe_interface *fcoe; |
85b4aa49 | 1354 | struct fc_frame_header *fh; |
85b4aa49 | 1355 | struct fcoe_percpu_s *fps; |
519e5135 | 1356 | struct ethhdr *eh; |
b2f0091f | 1357 | unsigned int cpu; |
85b4aa49 | 1358 | |
259ad85d | 1359 | fcoe = container_of(ptype, struct fcoe_interface, fcoe_packet_type); |
619fe4be RL |
1360 | ctlr = fcoe_to_ctlr(fcoe); |
1361 | lport = ctlr->lp; | |
1875f27e | 1362 | if (unlikely(!lport)) { |
465b87bf | 1363 | FCOE_NETDEV_DBG(netdev, "Cannot find hba structure\n"); |
85b4aa49 RL |
1364 | goto err2; |
1365 | } | |
1875f27e | 1366 | if (!lport->link_up) |
97c8389d | 1367 | goto err2; |
85b4aa49 | 1368 | |
465b87bf BVA |
1369 | FCOE_NETDEV_DBG(netdev, |
1370 | "skb_info: len:%d data_len:%d head:%p data:%p tail:%p end:%p sum:%d dev:%s\n", | |
d5488eb9 RL |
1371 | skb->len, skb->data_len, skb->head, skb->data, |
1372 | skb_tail_pointer(skb), skb_end_pointer(skb), | |
1373 | skb->csum, skb->dev ? skb->dev->name : "<NULL>"); | |
85b4aa49 | 1374 | |
8b612434 NH |
1375 | |
1376 | skb = skb_share_check(skb, GFP_ATOMIC); | |
1377 | ||
1378 | if (skb == NULL) | |
1379 | return NET_RX_DROP; | |
1380 | ||
519e5135 | 1381 | eh = eth_hdr(skb); |
519e5135 | 1382 | |
619fe4be | 1383 | if (is_fip_mode(ctlr) && |
6942df7f | 1384 | !ether_addr_equal(eh->h_source, ctlr->dest_addr)) { |
519e5135 VD |
1385 | FCOE_NETDEV_DBG(netdev, "wrong source mac address:%pM\n", |
1386 | eh->h_source); | |
85b4aa49 RL |
1387 | goto err; |
1388 | } | |
1389 | ||
1390 | /* | |
1391 | * Check for minimum frame length, and make sure required FCoE | |
1392 | * and FC headers are pulled into the linear data area. | |
1393 | */ | |
1394 | if (unlikely((skb->len < FCOE_MIN_FRAME) || | |
1875f27e | 1395 | !pskb_may_pull(skb, FCOE_HEADER_LEN))) |
85b4aa49 RL |
1396 | goto err; |
1397 | ||
1398 | skb_set_transport_header(skb, sizeof(struct fcoe_hdr)); | |
1399 | fh = (struct fc_frame_header *) skb_transport_header(skb); | |
1400 | ||
0ee31cb5 RL |
1401 | if (ntoh24(&eh->h_dest[3]) != ntoh24(fh->fh_d_id)) { |
1402 | FCOE_NETDEV_DBG(netdev, "FC frame d_id mismatch with MAC:%pM\n", | |
1403 | eh->h_dest); | |
1404 | goto err; | |
1405 | } | |
1406 | ||
85b4aa49 | 1407 | fr = fcoe_dev_from_skb(skb); |
1875f27e | 1408 | fr->fr_dev = lport; |
5e5e92df | 1409 | |
85b4aa49 | 1410 | /* |
b2f0091f VD |
1411 | * In case the incoming frame's exchange is originated from |
1412 | * the initiator, then received frame's exchange id is ANDed | |
1413 | * with fc_cpu_mask bits to get the same cpu on which exchange | |
d272281c VD |
1414 | * was originated, otherwise select cpu using rx exchange id |
1415 | * or fcoe_select_cpu(). | |
85b4aa49 | 1416 | */ |
b2f0091f VD |
1417 | if (ntoh24(fh->fh_f_ctl) & FC_FC_EX_CTX) |
1418 | cpu = ntohs(fh->fh_ox_id) & fc_cpu_mask; | |
064287ee | 1419 | else { |
d272281c VD |
1420 | if (ntohs(fh->fh_rx_id) == FC_XID_UNKNOWN) |
1421 | cpu = fcoe_select_cpu(); | |
1422 | else | |
29bdd2bb | 1423 | cpu = ntohs(fh->fh_rx_id) & fc_cpu_mask; |
064287ee | 1424 | } |
324f6678 VD |
1425 | |
1426 | if (cpu >= nr_cpu_ids) | |
1427 | goto err; | |
1428 | ||
8976f424 | 1429 | fps = &per_cpu(fcoe_percpu, cpu); |
94aa29f2 | 1430 | spin_lock(&fps->fcoe_rx_list.lock); |
8976f424 RL |
1431 | /* |
1432 | * We now have a valid CPU that we're targeting for | |
1433 | * this skb. We also have this receive thread locked, | |
1434 | * so we're free to queue skbs into it's queue. | |
1435 | */ | |
85b4aa49 | 1436 | |
5e70c4c4 NH |
1437 | /* |
1438 | * Note: We used to have a set of conditions under which we would | |
1439 | * call fcoe_recv_frame directly, rather than queuing to the rx list | |
1440 | * as it could save a few cycles, but doing so is prohibited, as | |
1441 | * fcoe_recv_frame has several paths that may sleep, which is forbidden | |
1442 | * in softirq context. | |
859b7b64 | 1443 | */ |
5e70c4c4 | 1444 | __skb_queue_tail(&fps->fcoe_rx_list, skb); |
4b9bc86d | 1445 | schedule_work_on(cpu, &fps->work); |
94aa29f2 | 1446 | spin_unlock(&fps->fcoe_rx_list.lock); |
85b4aa49 | 1447 | |
34bac2ef | 1448 | return NET_RX_SUCCESS; |
85b4aa49 | 1449 | err: |
1bd49b48 | 1450 | per_cpu_ptr(lport->stats, get_cpu())->ErrorFrames++; |
f018b73a | 1451 | put_cpu(); |
85b4aa49 RL |
1452 | err2: |
1453 | kfree_skb(skb); | |
34bac2ef | 1454 | return NET_RX_DROP; |
85b4aa49 | 1455 | } |
85b4aa49 RL |
1456 | |
1457 | /** | |
8597ae8b | 1458 | * fcoe_alloc_paged_crc_eof() - Allocate a page to be used for the trailer CRC |
1875f27e RL |
1459 | * @skb: The packet to be transmitted |
1460 | * @tlen: The total length of the trailer | |
1461 | * | |
85b4aa49 | 1462 | * Returns: 0 for success |
34f42a07 | 1463 | */ |
8597ae8b | 1464 | static int fcoe_alloc_paged_crc_eof(struct sk_buff *skb, int tlen) |
85b4aa49 RL |
1465 | { |
1466 | struct fcoe_percpu_s *fps; | |
8597ae8b | 1467 | int rc; |
85b4aa49 | 1468 | |
5e5e92df | 1469 | fps = &get_cpu_var(fcoe_percpu); |
8597ae8b | 1470 | rc = fcoe_get_paged_crc_eof(skb, tlen, fps); |
5e5e92df | 1471 | put_cpu_var(fcoe_percpu); |
85b4aa49 | 1472 | |
8597ae8b | 1473 | return rc; |
85b4aa49 | 1474 | } |
85b4aa49 RL |
1475 | |
1476 | /** | |
1875f27e RL |
1477 | * fcoe_xmit() - Transmit a FCoE frame |
1478 | * @lport: The local port that the frame is to be transmitted for | |
1479 | * @fp: The frame to be transmitted | |
85b4aa49 | 1480 | * |
1875f27e | 1481 | * Return: 0 for success |
34f42a07 | 1482 | */ |
7c9c6841 | 1483 | static int fcoe_xmit(struct fc_lport *lport, struct fc_frame *fp) |
85b4aa49 | 1484 | { |
4bb6b515 | 1485 | int wlen; |
85b4aa49 RL |
1486 | u32 crc; |
1487 | struct ethhdr *eh; | |
1488 | struct fcoe_crc_eof *cp; | |
1489 | struct sk_buff *skb; | |
1bd49b48 | 1490 | struct fc_stats *stats; |
85b4aa49 RL |
1491 | struct fc_frame_header *fh; |
1492 | unsigned int hlen; /* header length implies the version */ | |
1493 | unsigned int tlen; /* trailer length */ | |
1494 | unsigned int elen; /* eth header, may include vlan */ | |
1875f27e | 1495 | struct fcoe_port *port = lport_priv(lport); |
8597ae8b | 1496 | struct fcoe_interface *fcoe = port->priv; |
619fe4be | 1497 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
85b4aa49 RL |
1498 | u8 sof, eof; |
1499 | struct fcoe_hdr *hp; | |
1500 | ||
1501 | WARN_ON((fr_len(fp) % sizeof(u32)) != 0); | |
1502 | ||
85b4aa49 | 1503 | fh = fc_frame_header_get(fp); |
97c8389d JE |
1504 | skb = fp_skb(fp); |
1505 | wlen = skb->len / FCOE_WORD_TO_BYTE; | |
1506 | ||
1875f27e | 1507 | if (!lport->link_up) { |
3caf02ee | 1508 | kfree_skb(skb); |
97c8389d | 1509 | return 0; |
85b4aa49 RL |
1510 | } |
1511 | ||
9860eeb4 | 1512 | if (unlikely(fh->fh_type == FC_TYPE_ELS) && |
619fe4be | 1513 | fcoe_ctlr_els_send(ctlr, lport, skb)) |
97c8389d JE |
1514 | return 0; |
1515 | ||
85b4aa49 RL |
1516 | sof = fr_sof(fp); |
1517 | eof = fr_eof(fp); | |
1518 | ||
4e57e1cb | 1519 | elen = sizeof(struct ethhdr); |
85b4aa49 RL |
1520 | hlen = sizeof(struct fcoe_hdr); |
1521 | tlen = sizeof(struct fcoe_crc_eof); | |
1522 | wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; | |
1523 | ||
1524 | /* crc offload */ | |
1875f27e | 1525 | if (likely(lport->crc_offload)) { |
253aab05 | 1526 | skb->ip_summed = CHECKSUM_PARTIAL; |
85b4aa49 RL |
1527 | skb->csum_start = skb_headroom(skb); |
1528 | skb->csum_offset = skb->len; | |
1529 | crc = 0; | |
1530 | } else { | |
1531 | skb->ip_summed = CHECKSUM_NONE; | |
1532 | crc = fcoe_fc_crc(fp); | |
1533 | } | |
1534 | ||
014f5c3f | 1535 | /* copy port crc and eof to the skb buff */ |
85b4aa49 RL |
1536 | if (skb_is_nonlinear(skb)) { |
1537 | skb_frag_t *frag; | |
8597ae8b | 1538 | if (fcoe_alloc_paged_crc_eof(skb, tlen)) { |
e9041581 | 1539 | kfree_skb(skb); |
85b4aa49 RL |
1540 | return -ENOMEM; |
1541 | } | |
1542 | frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; | |
77dfce07 | 1543 | cp = kmap_atomic(skb_frag_page(frag)) |
85b4aa49 RL |
1544 | + frag->page_offset; |
1545 | } else { | |
4df864c1 | 1546 | cp = skb_put(skb, tlen); |
85b4aa49 RL |
1547 | } |
1548 | ||
1549 | memset(cp, 0, sizeof(*cp)); | |
1550 | cp->fcoe_eof = eof; | |
1551 | cp->fcoe_crc32 = cpu_to_le32(~crc); | |
1552 | ||
1553 | if (skb_is_nonlinear(skb)) { | |
77dfce07 | 1554 | kunmap_atomic(cp); |
85b4aa49 RL |
1555 | cp = NULL; |
1556 | } | |
1557 | ||
014f5c3f | 1558 | /* adjust skb network/transport offsets to match mac/fcoe/port */ |
85b4aa49 RL |
1559 | skb_push(skb, elen + hlen); |
1560 | skb_reset_mac_header(skb); | |
1561 | skb_reset_network_header(skb); | |
1562 | skb->mac_len = elen; | |
211c738d | 1563 | skb->protocol = htons(ETH_P_FCOE); |
31c37a6f | 1564 | skb->priority = fcoe->priority; |
6f6c2aa3 | 1565 | |
d0d7b10b | 1566 | if (is_vlan_dev(fcoe->netdev) && |
f646968f | 1567 | fcoe->realdev->features & NETIF_F_HW_VLAN_CTAG_TX) { |
2884d423 | 1568 | /* must set skb->dev before calling vlan_put_tag */ |
d1483bb9 | 1569 | skb->dev = fcoe->realdev; |
b960a0ac JP |
1570 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), |
1571 | vlan_dev_vlan_id(fcoe->netdev)); | |
d1483bb9 VD |
1572 | } else |
1573 | skb->dev = fcoe->netdev; | |
85b4aa49 RL |
1574 | |
1575 | /* fill up mac and fcoe headers */ | |
1576 | eh = eth_hdr(skb); | |
1577 | eh->h_proto = htons(ETH_P_FCOE); | |
619fe4be RL |
1578 | memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN); |
1579 | if (ctlr->map_dest) | |
cd229e42 | 1580 | memcpy(eh->h_dest + 3, fh->fh_d_id, 3); |
85b4aa49 | 1581 | |
619fe4be RL |
1582 | if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN)) |
1583 | memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN); | |
85b4aa49 | 1584 | else |
11b56188 | 1585 | memcpy(eh->h_source, port->data_src_addr, ETH_ALEN); |
85b4aa49 RL |
1586 | |
1587 | hp = (struct fcoe_hdr *)(eh + 1); | |
1588 | memset(hp, 0, sizeof(*hp)); | |
1589 | if (FC_FCOE_VER) | |
1590 | FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); | |
1591 | hp->fcoe_sof = sof; | |
1592 | ||
39ca9a06 | 1593 | /* fcoe lso, mss is in max_payload which is non-zero for FCP data */ |
1875f27e | 1594 | if (lport->seq_offload && fr_max_payload(fp)) { |
39ca9a06 YZ |
1595 | skb_shinfo(skb)->gso_type = SKB_GSO_FCOE; |
1596 | skb_shinfo(skb)->gso_size = fr_max_payload(fp); | |
1597 | } else { | |
1598 | skb_shinfo(skb)->gso_type = 0; | |
1599 | skb_shinfo(skb)->gso_size = 0; | |
1600 | } | |
85b4aa49 | 1601 | /* update tx stats: regardless if LLD fails */ |
1bd49b48 | 1602 | stats = per_cpu_ptr(lport->stats, get_cpu()); |
582b45bc RL |
1603 | stats->TxFrames++; |
1604 | stats->TxWords += wlen; | |
f018b73a | 1605 | put_cpu(); |
85b4aa49 RL |
1606 | |
1607 | /* send down to lld */ | |
1875f27e | 1608 | fr_dev(fp) = lport; |
980f5156 | 1609 | fcoe_port_send(port, skb); |
85b4aa49 RL |
1610 | return 0; |
1611 | } | |
85b4aa49 | 1612 | |
52ee8321 VD |
1613 | /** |
1614 | * fcoe_filter_frames() - filter out bad fcoe frames, i.e. bad CRC | |
1615 | * @lport: The local port the frame was received on | |
1616 | * @fp: The received frame | |
1617 | * | |
1618 | * Return: 0 on passing filtering checks | |
1619 | */ | |
1620 | static inline int fcoe_filter_frames(struct fc_lport *lport, | |
1621 | struct fc_frame *fp) | |
1622 | { | |
619fe4be | 1623 | struct fcoe_ctlr *ctlr; |
52ee8321 VD |
1624 | struct fcoe_interface *fcoe; |
1625 | struct fc_frame_header *fh; | |
1626 | struct sk_buff *skb = (struct sk_buff *)fp; | |
1bd49b48 | 1627 | struct fc_stats *stats; |
52ee8321 VD |
1628 | |
1629 | /* | |
1630 | * We only check CRC if no offload is available and if it is | |
1631 | * it's solicited data, in which case, the FCP layer would | |
1632 | * check it during the copy. | |
1633 | */ | |
1634 | if (lport->crc_offload && skb->ip_summed == CHECKSUM_UNNECESSARY) | |
1635 | fr_flags(fp) &= ~FCPHF_CRC_UNCHECKED; | |
1636 | else | |
1637 | fr_flags(fp) |= FCPHF_CRC_UNCHECKED; | |
1638 | ||
1639 | fh = (struct fc_frame_header *) skb_transport_header(skb); | |
1640 | fh = fc_frame_header_get(fp); | |
1641 | if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && fh->fh_type == FC_TYPE_FCP) | |
1642 | return 0; | |
1643 | ||
8597ae8b | 1644 | fcoe = ((struct fcoe_port *)lport_priv(lport))->priv; |
619fe4be RL |
1645 | ctlr = fcoe_to_ctlr(fcoe); |
1646 | if (is_fip_mode(ctlr) && fc_frame_payload_op(fp) == ELS_LOGO && | |
52ee8321 VD |
1647 | ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { |
1648 | FCOE_DBG("fcoe: dropping FCoE lport LOGO in fip mode\n"); | |
1649 | return -EINVAL; | |
1650 | } | |
1651 | ||
f2f96d20 | 1652 | if (!(fr_flags(fp) & FCPHF_CRC_UNCHECKED) || |
52ee8321 VD |
1653 | le32_to_cpu(fr_crc(fp)) == ~crc32(~0, skb->data, skb->len)) { |
1654 | fr_flags(fp) &= ~FCPHF_CRC_UNCHECKED; | |
1655 | return 0; | |
1656 | } | |
1657 | ||
1bd49b48 | 1658 | stats = per_cpu_ptr(lport->stats, get_cpu()); |
52ee8321 VD |
1659 | stats->InvalidCRCCount++; |
1660 | if (stats->InvalidCRCCount < 5) | |
1661 | printk(KERN_WARNING "fcoe: dropping frame with CRC error\n"); | |
7e1e7ead | 1662 | put_cpu(); |
52ee8321 VD |
1663 | return -EINVAL; |
1664 | } | |
1665 | ||
34f42a07 | 1666 | /** |
859b7b64 CL |
1667 | * fcoe_recv_frame() - process a single received frame |
1668 | * @skb: frame to process | |
85b4aa49 | 1669 | */ |
859b7b64 | 1670 | static void fcoe_recv_frame(struct sk_buff *skb) |
85b4aa49 | 1671 | { |
85b4aa49 | 1672 | u32 fr_len; |
1875f27e | 1673 | struct fc_lport *lport; |
85b4aa49 | 1674 | struct fcoe_rcv_info *fr; |
1bd49b48 | 1675 | struct fc_stats *stats; |
85b4aa49 RL |
1676 | struct fcoe_crc_eof crc_eof; |
1677 | struct fc_frame *fp; | |
014f5c3f | 1678 | struct fcoe_port *port; |
85b4aa49 RL |
1679 | struct fcoe_hdr *hp; |
1680 | ||
859b7b64 CL |
1681 | fr = fcoe_dev_from_skb(skb); |
1682 | lport = fr->fr_dev; | |
1683 | if (unlikely(!lport)) { | |
4b9bc86d | 1684 | FCOE_NETDEV_DBG(skb->dev, "NULL lport in skb\n"); |
859b7b64 CL |
1685 | kfree_skb(skb); |
1686 | return; | |
1687 | } | |
1688 | ||
465b87bf BVA |
1689 | FCOE_NETDEV_DBG(skb->dev, |
1690 | "skb_info: len:%d data_len:%d head:%p data:%p tail:%p end:%p sum:%d dev:%s\n", | |
859b7b64 CL |
1691 | skb->len, skb->data_len, |
1692 | skb->head, skb->data, skb_tail_pointer(skb), | |
1693 | skb_end_pointer(skb), skb->csum, | |
1694 | skb->dev ? skb->dev->name : "<NULL>"); | |
1695 | ||
859b7b64 | 1696 | port = lport_priv(lport); |
f1633011 | 1697 | skb_linearize(skb); /* check for skb_is_nonlinear is within skb_linearize */ |
859b7b64 CL |
1698 | |
1699 | /* | |
1700 | * Frame length checks and setting up the header pointers | |
1701 | * was done in fcoe_rcv already. | |
1702 | */ | |
1703 | hp = (struct fcoe_hdr *) skb_network_header(skb); | |
859b7b64 | 1704 | |
1bd49b48 | 1705 | stats = per_cpu_ptr(lport->stats, get_cpu()); |
859b7b64 CL |
1706 | if (unlikely(FC_FCOE_DECAPS_VER(hp) != FC_FCOE_VER)) { |
1707 | if (stats->ErrorFrames < 5) | |
1708 | printk(KERN_WARNING "fcoe: FCoE version " | |
1709 | "mismatch: The frame has " | |
1710 | "version %x, but the " | |
1711 | "initiator supports version " | |
1712 | "%x\n", FC_FCOE_DECAPS_VER(hp), | |
1713 | FC_FCOE_VER); | |
f018b73a | 1714 | goto drop; |
859b7b64 CL |
1715 | } |
1716 | ||
1717 | skb_pull(skb, sizeof(struct fcoe_hdr)); | |
1718 | fr_len = skb->len - sizeof(struct fcoe_crc_eof); | |
1719 | ||
1720 | stats->RxFrames++; | |
1721 | stats->RxWords += fr_len / FCOE_WORD_TO_BYTE; | |
1722 | ||
1723 | fp = (struct fc_frame *)skb; | |
1724 | fc_frame_init(fp); | |
1725 | fr_dev(fp) = lport; | |
1726 | fr_sof(fp) = hp->fcoe_sof; | |
1727 | ||
1728 | /* Copy out the CRC and EOF trailer for access */ | |
f018b73a JE |
1729 | if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) |
1730 | goto drop; | |
859b7b64 CL |
1731 | fr_eof(fp) = crc_eof.fcoe_eof; |
1732 | fr_crc(fp) = crc_eof.fcoe_crc32; | |
f018b73a JE |
1733 | if (pskb_trim(skb, fr_len)) |
1734 | goto drop; | |
859b7b64 | 1735 | |
52ee8321 VD |
1736 | if (!fcoe_filter_frames(lport, fp)) { |
1737 | put_cpu(); | |
1738 | fc_exch_recv(lport, fp); | |
1739 | return; | |
859b7b64 | 1740 | } |
f018b73a JE |
1741 | drop: |
1742 | stats->ErrorFrames++; | |
1743 | put_cpu(); | |
1744 | kfree_skb(skb); | |
859b7b64 CL |
1745 | } |
1746 | ||
1747 | /** | |
4b9bc86d SAS |
1748 | * fcoe_receive_work() - The per-CPU worker |
1749 | * @work: The work struct | |
859b7b64 | 1750 | * |
859b7b64 | 1751 | */ |
4b9bc86d | 1752 | static void fcoe_receive_work(struct work_struct *work) |
859b7b64 | 1753 | { |
4b9bc86d | 1754 | struct fcoe_percpu_s *p; |
859b7b64 | 1755 | struct sk_buff *skb; |
20dc3811 NH |
1756 | struct sk_buff_head tmp; |
1757 | ||
4b9bc86d | 1758 | p = container_of(work, struct fcoe_percpu_s, work); |
20dc3811 | 1759 | skb_queue_head_init(&tmp); |
859b7b64 | 1760 | |
4b9bc86d SAS |
1761 | spin_lock_bh(&p->fcoe_rx_list.lock); |
1762 | skb_queue_splice_init(&p->fcoe_rx_list, &tmp); | |
1763 | spin_unlock_bh(&p->fcoe_rx_list.lock); | |
95fdd5e9 | 1764 | |
4b9bc86d SAS |
1765 | if (!skb_queue_len(&tmp)) |
1766 | return; | |
95fdd5e9 | 1767 | |
4b9bc86d SAS |
1768 | while ((skb = __skb_dequeue(&tmp))) |
1769 | fcoe_recv_frame(skb); | |
85b4aa49 RL |
1770 | } |
1771 | ||
85b4aa49 | 1772 | /** |
1875f27e | 1773 | * fcoe_dev_setup() - Setup the link change notification interface |
34f42a07 | 1774 | */ |
b0d428ad | 1775 | static void fcoe_dev_setup(void) |
85b4aa49 | 1776 | { |
6f6c2aa3 | 1777 | register_dcbevent_notifier(&dcb_notifier); |
85b4aa49 RL |
1778 | register_netdevice_notifier(&fcoe_notifier); |
1779 | } | |
1780 | ||
1781 | /** | |
1875f27e | 1782 | * fcoe_dev_cleanup() - Cleanup the link change notification interface |
34f42a07 | 1783 | */ |
85b4aa49 RL |
1784 | static void fcoe_dev_cleanup(void) |
1785 | { | |
6f6c2aa3 | 1786 | unregister_dcbevent_notifier(&dcb_notifier); |
85b4aa49 RL |
1787 | unregister_netdevice_notifier(&fcoe_notifier); |
1788 | } | |
1789 | ||
6f6c2aa3 | 1790 | static struct fcoe_interface * |
1791 | fcoe_hostlist_lookup_realdev_port(struct net_device *netdev) | |
1792 | { | |
1793 | struct fcoe_interface *fcoe; | |
1794 | struct net_device *real_dev; | |
1795 | ||
1796 | list_for_each_entry(fcoe, &fcoe_hostlist, list) { | |
d0d7b10b | 1797 | if (is_vlan_dev(fcoe->netdev)) |
6f6c2aa3 | 1798 | real_dev = vlan_dev_real_dev(fcoe->netdev); |
1799 | else | |
1800 | real_dev = fcoe->netdev; | |
1801 | ||
1802 | if (netdev == real_dev) | |
1803 | return fcoe; | |
1804 | } | |
1805 | return NULL; | |
1806 | } | |
1807 | ||
1808 | static int fcoe_dcb_app_notification(struct notifier_block *notifier, | |
1809 | ulong event, void *ptr) | |
1810 | { | |
1811 | struct dcb_app_type *entry = ptr; | |
619fe4be | 1812 | struct fcoe_ctlr *ctlr; |
6f6c2aa3 | 1813 | struct fcoe_interface *fcoe; |
1814 | struct net_device *netdev; | |
6f6c2aa3 | 1815 | int prio; |
1816 | ||
1817 | if (entry->app.selector != DCB_APP_IDTYPE_ETHTYPE) | |
1818 | return NOTIFY_OK; | |
1819 | ||
1820 | netdev = dev_get_by_index(&init_net, entry->ifindex); | |
1821 | if (!netdev) | |
1822 | return NOTIFY_OK; | |
1823 | ||
1824 | fcoe = fcoe_hostlist_lookup_realdev_port(netdev); | |
1825 | dev_put(netdev); | |
1826 | if (!fcoe) | |
1827 | return NOTIFY_OK; | |
1828 | ||
619fe4be RL |
1829 | ctlr = fcoe_to_ctlr(fcoe); |
1830 | ||
6f6c2aa3 | 1831 | if (entry->dcbx & DCB_CAP_DCBX_VER_CEE) |
1832 | prio = ffs(entry->app.priority) - 1; | |
1833 | else | |
1834 | prio = entry->app.priority; | |
1835 | ||
1836 | if (prio < 0) | |
1837 | return NOTIFY_OK; | |
1838 | ||
1839 | if (entry->app.protocol == ETH_P_FIP || | |
1840 | entry->app.protocol == ETH_P_FCOE) | |
619fe4be | 1841 | ctlr->priority = prio; |
6f6c2aa3 | 1842 | |
31c37a6f NP |
1843 | if (entry->app.protocol == ETH_P_FCOE) |
1844 | fcoe->priority = prio; | |
6f6c2aa3 | 1845 | |
1846 | return NOTIFY_OK; | |
1847 | } | |
1848 | ||
85b4aa49 | 1849 | /** |
1875f27e RL |
1850 | * fcoe_device_notification() - Handler for net device events |
1851 | * @notifier: The context of the notification | |
1852 | * @event: The type of event | |
1853 | * @ptr: The net device that the event was on | |
85b4aa49 | 1854 | * |
1875f27e | 1855 | * This function is called by the Ethernet driver in case of link change event. |
85b4aa49 RL |
1856 | * |
1857 | * Returns: 0 for success | |
34f42a07 | 1858 | */ |
85b4aa49 RL |
1859 | static int fcoe_device_notification(struct notifier_block *notifier, |
1860 | ulong event, void *ptr) | |
1861 | { | |
435c8667 | 1862 | struct fcoe_ctlr_device *cdev; |
1875f27e | 1863 | struct fc_lport *lport = NULL; |
351638e7 | 1864 | struct net_device *netdev = netdev_notifier_info_to_dev(ptr); |
619fe4be | 1865 | struct fcoe_ctlr *ctlr; |
014f5c3f | 1866 | struct fcoe_interface *fcoe; |
2e70e241 | 1867 | struct fcoe_port *port; |
1bd49b48 | 1868 | struct fc_stats *stats; |
97c8389d | 1869 | u32 link_possible = 1; |
85b4aa49 RL |
1870 | u32 mfs; |
1871 | int rc = NOTIFY_OK; | |
1872 | ||
014f5c3f | 1873 | list_for_each_entry(fcoe, &fcoe_hostlist, list) { |
25024989 | 1874 | if (fcoe->netdev == netdev) { |
619fe4be RL |
1875 | ctlr = fcoe_to_ctlr(fcoe); |
1876 | lport = ctlr->lp; | |
85b4aa49 RL |
1877 | break; |
1878 | } | |
1879 | } | |
1875f27e | 1880 | if (!lport) { |
85b4aa49 RL |
1881 | rc = NOTIFY_DONE; |
1882 | goto out; | |
1883 | } | |
1884 | ||
85b4aa49 RL |
1885 | switch (event) { |
1886 | case NETDEV_DOWN: | |
1887 | case NETDEV_GOING_DOWN: | |
97c8389d | 1888 | link_possible = 0; |
85b4aa49 RL |
1889 | break; |
1890 | case NETDEV_UP: | |
1891 | case NETDEV_CHANGE: | |
85b4aa49 RL |
1892 | break; |
1893 | case NETDEV_CHANGEMTU: | |
7221d7e5 YZ |
1894 | if (netdev->features & NETIF_F_FCOE_MTU) |
1895 | break; | |
1d1b88dc VD |
1896 | mfs = netdev->mtu - (sizeof(struct fcoe_hdr) + |
1897 | sizeof(struct fcoe_crc_eof)); | |
85b4aa49 | 1898 | if (mfs >= FC_MIN_MAX_FRAME) |
1875f27e | 1899 | fc_set_mfs(lport, mfs); |
85b4aa49 RL |
1900 | break; |
1901 | case NETDEV_REGISTER: | |
1902 | break; | |
2e70e241 CL |
1903 | case NETDEV_UNREGISTER: |
1904 | list_del(&fcoe->list); | |
619fe4be | 1905 | port = lport_priv(ctlr->lp); |
2ca32b48 | 1906 | queue_work(fcoe_wq, &port->destroy_work); |
2e70e241 CL |
1907 | goto out; |
1908 | break; | |
54a5b21d YZ |
1909 | case NETDEV_FEAT_CHANGE: |
1910 | fcoe_netdev_features_change(lport, netdev); | |
1911 | break; | |
85b4aa49 | 1912 | default: |
1d1b88dc | 1913 | FCOE_NETDEV_DBG(netdev, "Unknown event %ld " |
d5488eb9 | 1914 | "from netdev netlink\n", event); |
85b4aa49 | 1915 | } |
5e4f8fe7 RL |
1916 | |
1917 | fcoe_link_speed_update(lport); | |
1918 | ||
435c8667 RL |
1919 | cdev = fcoe_ctlr_to_ctlr_dev(ctlr); |
1920 | ||
1921 | if (link_possible && !fcoe_link_ok(lport)) { | |
1922 | switch (cdev->enabled) { | |
1923 | case FCOE_CTLR_DISABLED: | |
1924 | pr_info("Link up while interface is disabled.\n"); | |
1925 | break; | |
1926 | case FCOE_CTLR_ENABLED: | |
1927 | case FCOE_CTLR_UNUSED: | |
1928 | fcoe_ctlr_link_up(ctlr); | |
1929 | }; | |
1930 | } else if (fcoe_ctlr_link_down(ctlr)) { | |
1931 | switch (cdev->enabled) { | |
1932 | case FCOE_CTLR_DISABLED: | |
1933 | pr_info("Link down while interface is disabled.\n"); | |
1934 | break; | |
1935 | case FCOE_CTLR_ENABLED: | |
1936 | case FCOE_CTLR_UNUSED: | |
1937 | stats = per_cpu_ptr(lport->stats, get_cpu()); | |
1938 | stats->LinkFailureCount++; | |
1939 | put_cpu(); | |
1940 | fcoe_clean_pending_queue(lport); | |
1941 | }; | |
85b4aa49 RL |
1942 | } |
1943 | out: | |
1944 | return rc; | |
1945 | } | |
1946 | ||
55a66d3c VD |
1947 | /** |
1948 | * fcoe_disable() - Disables a FCoE interface | |
78a58246 | 1949 | * @netdev : The net_device object the Ethernet interface to create on |
55a66d3c | 1950 | * |
78a58246 | 1951 | * Called from fcoe transport. |
55a66d3c VD |
1952 | * |
1953 | * Returns: 0 for success | |
435c8667 RL |
1954 | * |
1955 | * Deprecated: use fcoe_ctlr_enabled() | |
55a66d3c | 1956 | */ |
78a58246 | 1957 | static int fcoe_disable(struct net_device *netdev) |
55a66d3c | 1958 | { |
619fe4be | 1959 | struct fcoe_ctlr *ctlr; |
55a66d3c | 1960 | struct fcoe_interface *fcoe; |
55a66d3c VD |
1961 | int rc = 0; |
1962 | ||
1963 | mutex_lock(&fcoe_config_mutex); | |
55a66d3c | 1964 | |
ee5df628 | 1965 | rtnl_lock(); |
55a66d3c VD |
1966 | fcoe = fcoe_hostlist_lookup_port(netdev); |
1967 | rtnl_unlock(); | |
1968 | ||
9ee50e48 | 1969 | if (fcoe) { |
619fe4be RL |
1970 | ctlr = fcoe_to_ctlr(fcoe); |
1971 | fcoe_ctlr_link_down(ctlr); | |
1972 | fcoe_clean_pending_queue(ctlr->lp); | |
9ee50e48 | 1973 | } else |
55a66d3c VD |
1974 | rc = -ENODEV; |
1975 | ||
55a66d3c VD |
1976 | mutex_unlock(&fcoe_config_mutex); |
1977 | return rc; | |
1978 | } | |
1979 | ||
1980 | /** | |
1981 | * fcoe_enable() - Enables a FCoE interface | |
78a58246 | 1982 | * @netdev : The net_device object the Ethernet interface to create on |
55a66d3c | 1983 | * |
78a58246 | 1984 | * Called from fcoe transport. |
55a66d3c VD |
1985 | * |
1986 | * Returns: 0 for success | |
1987 | */ | |
78a58246 | 1988 | static int fcoe_enable(struct net_device *netdev) |
55a66d3c | 1989 | { |
619fe4be | 1990 | struct fcoe_ctlr *ctlr; |
55a66d3c | 1991 | struct fcoe_interface *fcoe; |
55a66d3c VD |
1992 | int rc = 0; |
1993 | ||
1994 | mutex_lock(&fcoe_config_mutex); | |
ee5df628 | 1995 | rtnl_lock(); |
55a66d3c VD |
1996 | fcoe = fcoe_hostlist_lookup_port(netdev); |
1997 | rtnl_unlock(); | |
1998 | ||
619fe4be | 1999 | if (!fcoe) { |
55a66d3c | 2000 | rc = -ENODEV; |
619fe4be RL |
2001 | goto out; |
2002 | } | |
55a66d3c | 2003 | |
619fe4be RL |
2004 | ctlr = fcoe_to_ctlr(fcoe); |
2005 | ||
2006 | if (!fcoe_link_ok(ctlr->lp)) | |
2007 | fcoe_ctlr_link_up(ctlr); | |
2008 | ||
2009 | out: | |
55a66d3c VD |
2010 | mutex_unlock(&fcoe_config_mutex); |
2011 | return rc; | |
2012 | } | |
2013 | ||
435c8667 RL |
2014 | /** |
2015 | * fcoe_ctlr_enabled() - Enable or disable an FCoE Controller | |
2016 | * @cdev: The FCoE Controller that is being enabled or disabled | |
2017 | * | |
2018 | * fcoe_sysfs will ensure that the state of 'enabled' has | |
2019 | * changed, so no checking is necessary here. This routine simply | |
2020 | * calls fcoe_enable or fcoe_disable, both of which are deprecated. | |
2021 | * When those routines are removed the functionality can be merged | |
2022 | * here. | |
2023 | */ | |
2024 | static int fcoe_ctlr_enabled(struct fcoe_ctlr_device *cdev) | |
2025 | { | |
2026 | struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev); | |
2027 | struct fc_lport *lport = ctlr->lp; | |
2028 | struct net_device *netdev = fcoe_netdev(lport); | |
2029 | ||
2030 | switch (cdev->enabled) { | |
2031 | case FCOE_CTLR_ENABLED: | |
2032 | return fcoe_enable(netdev); | |
2033 | case FCOE_CTLR_DISABLED: | |
2034 | return fcoe_disable(netdev); | |
2035 | case FCOE_CTLR_UNUSED: | |
2036 | default: | |
2037 | return -ENOTSUPP; | |
2038 | }; | |
2039 | } | |
2040 | ||
a87dccc7 HR |
2041 | /** |
2042 | * fcoe_ctlr_mode() - Switch FIP mode | |
2043 | * @cdev: The FCoE Controller that is being modified | |
2044 | * | |
2045 | * When the FIP mode has been changed we need to update | |
2046 | * the multicast addresses to ensure we get the correct | |
2047 | * frames. | |
2048 | */ | |
2049 | static void fcoe_ctlr_mode(struct fcoe_ctlr_device *ctlr_dev) | |
2050 | { | |
2051 | struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev); | |
2052 | struct fcoe_interface *fcoe = fcoe_ctlr_priv(ctlr); | |
2053 | ||
2054 | if (ctlr_dev->mode == FIP_CONN_TYPE_VN2VN && | |
2055 | ctlr->mode != FIP_MODE_VN2VN) { | |
2056 | dev_mc_del(fcoe->netdev, FIP_ALL_ENODE_MACS); | |
2057 | dev_mc_add(fcoe->netdev, FIP_ALL_VN2VN_MACS); | |
2058 | dev_mc_add(fcoe->netdev, FIP_ALL_P2P_MACS); | |
2059 | } else if (ctlr->mode != FIP_MODE_FABRIC) { | |
2060 | dev_mc_del(fcoe->netdev, FIP_ALL_VN2VN_MACS); | |
2061 | dev_mc_del(fcoe->netdev, FIP_ALL_P2P_MACS); | |
2062 | dev_mc_add(fcoe->netdev, FIP_ALL_ENODE_MACS); | |
2063 | } | |
2064 | fcoe_ctlr_set_fip_mode(ctlr_dev); | |
2065 | } | |
2066 | ||
85b4aa49 | 2067 | /** |
1875f27e | 2068 | * fcoe_destroy() - Destroy a FCoE interface |
78a58246 | 2069 | * @netdev : The net_device object the Ethernet interface to create on |
1875f27e | 2070 | * |
78a58246 | 2071 | * Called from fcoe transport |
85b4aa49 RL |
2072 | * |
2073 | * Returns: 0 for success | |
34f42a07 | 2074 | */ |
78a58246 | 2075 | static int fcoe_destroy(struct net_device *netdev) |
85b4aa49 | 2076 | { |
619fe4be | 2077 | struct fcoe_ctlr *ctlr; |
030f4e00 | 2078 | struct fcoe_interface *fcoe; |
f04ca1b6 | 2079 | struct fc_lport *lport; |
b2085a4e | 2080 | struct fcoe_port *port; |
8eca355f | 2081 | int rc = 0; |
85b4aa49 | 2082 | |
dfc1d0fe | 2083 | mutex_lock(&fcoe_config_mutex); |
ee5df628 | 2084 | rtnl_lock(); |
2e70e241 CL |
2085 | fcoe = fcoe_hostlist_lookup_port(netdev); |
2086 | if (!fcoe) { | |
85b4aa49 | 2087 | rc = -ENODEV; |
78a58246 | 2088 | goto out_nodev; |
85b4aa49 | 2089 | } |
619fe4be RL |
2090 | ctlr = fcoe_to_ctlr(fcoe); |
2091 | lport = ctlr->lp; | |
b2085a4e | 2092 | port = lport_priv(lport); |
54a5b21d | 2093 | list_del(&fcoe->list); |
b2085a4e | 2094 | queue_work(fcoe_wq, &port->destroy_work); |
85b4aa49 | 2095 | out_nodev: |
b2085a4e | 2096 | rtnl_unlock(); |
dfc1d0fe | 2097 | mutex_unlock(&fcoe_config_mutex); |
85b4aa49 RL |
2098 | return rc; |
2099 | } | |
2100 | ||
1875f27e RL |
2101 | /** |
2102 | * fcoe_destroy_work() - Destroy a FCoE port in a deferred work context | |
2103 | * @work: Handle to the FCoE port to be destroyed | |
2104 | */ | |
2e70e241 CL |
2105 | static void fcoe_destroy_work(struct work_struct *work) |
2106 | { | |
f9c4358e RL |
2107 | struct fcoe_ctlr_device *cdev; |
2108 | struct fcoe_ctlr *ctlr; | |
2e70e241 | 2109 | struct fcoe_port *port; |
b2085a4e | 2110 | struct fcoe_interface *fcoe; |
94aa743a NP |
2111 | struct Scsi_Host *shost; |
2112 | struct fc_host_attrs *fc_host; | |
2113 | unsigned long flags; | |
2114 | struct fc_vport *vport; | |
2115 | struct fc_vport *next_vport; | |
2e70e241 CL |
2116 | |
2117 | port = container_of(work, struct fcoe_port, destroy_work); | |
94aa743a NP |
2118 | shost = port->lport->host; |
2119 | fc_host = shost_to_fc_host(shost); | |
2120 | ||
2121 | /* Loop through all the vports and mark them for deletion */ | |
2122 | spin_lock_irqsave(shost->host_lock, flags); | |
2123 | list_for_each_entry_safe(vport, next_vport, &fc_host->vports, peers) { | |
2124 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) { | |
2125 | continue; | |
2126 | } else { | |
2127 | vport->flags |= FC_VPORT_DELETING; | |
2128 | queue_work(fc_host_work_q(shost), | |
2129 | &vport->vport_delete_work); | |
2130 | } | |
2131 | } | |
2132 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2133 | ||
2134 | flush_workqueue(fc_host_work_q(shost)); | |
2135 | ||
2e70e241 | 2136 | mutex_lock(&fcoe_config_mutex); |
b2085a4e | 2137 | |
b2085a4e | 2138 | fcoe = port->priv; |
f9c4358e RL |
2139 | ctlr = fcoe_to_ctlr(fcoe); |
2140 | cdev = fcoe_ctlr_to_ctlr_dev(ctlr); | |
2141 | ||
2e70e241 | 2142 | fcoe_if_destroy(port->lport); |
ccefd23e | 2143 | fcoe_interface_cleanup(fcoe); |
b2085a4e | 2144 | |
2e70e241 | 2145 | mutex_unlock(&fcoe_config_mutex); |
f9c4358e RL |
2146 | |
2147 | fcoe_ctlr_device_delete(cdev); | |
2e70e241 CL |
2148 | } |
2149 | ||
78a58246 YZ |
2150 | /** |
2151 | * fcoe_match() - Check if the FCoE is supported on the given netdevice | |
2152 | * @netdev : The net_device object the Ethernet interface to create on | |
2153 | * | |
2154 | * Called from fcoe transport. | |
2155 | * | |
2156 | * Returns: always returns true as this is the default FCoE transport, | |
2157 | * i.e., support all netdevs. | |
2158 | */ | |
2159 | static bool fcoe_match(struct net_device *netdev) | |
2160 | { | |
2161 | return true; | |
2162 | } | |
2163 | ||
6f6c2aa3 | 2164 | /** |
2165 | * fcoe_dcb_create() - Initialize DCB attributes and hooks | |
2166 | * @netdev: The net_device object of the L2 link that should be queried | |
2167 | * @port: The fcoe_port to bind FCoE APP priority with | |
2168 | * @ | |
2169 | */ | |
2170 | static void fcoe_dcb_create(struct fcoe_interface *fcoe) | |
2171 | { | |
c216e876 HR |
2172 | int ctlr_prio = TC_PRIO_BESTEFFORT; |
2173 | int fcoe_prio = TC_PRIO_INTERACTIVE; | |
c5969656 | 2174 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
6f6c2aa3 | 2175 | #ifdef CONFIG_DCB |
2176 | int dcbx; | |
2177 | u8 fup, up; | |
2178 | struct net_device *netdev = fcoe->realdev; | |
6f6c2aa3 | 2179 | struct dcb_app app = { |
2180 | .priority = 0, | |
2181 | .protocol = ETH_P_FCOE | |
2182 | }; | |
2183 | ||
2184 | /* setup DCB priority attributes. */ | |
2185 | if (netdev && netdev->dcbnl_ops && netdev->dcbnl_ops->getdcbx) { | |
2186 | dcbx = netdev->dcbnl_ops->getdcbx(netdev); | |
2187 | ||
2188 | if (dcbx & DCB_CAP_DCBX_VER_IEEE) { | |
2189 | app.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE; | |
2190 | up = dcb_ieee_getapp_mask(netdev, &app); | |
2191 | app.protocol = ETH_P_FIP; | |
2192 | fup = dcb_ieee_getapp_mask(netdev, &app); | |
2193 | } else { | |
2194 | app.selector = DCB_APP_IDTYPE_ETHTYPE; | |
2195 | up = dcb_getapp(netdev, &app); | |
2196 | app.protocol = ETH_P_FIP; | |
2197 | fup = dcb_getapp(netdev, &app); | |
2198 | } | |
2199 | ||
c216e876 HR |
2200 | fcoe_prio = ffs(up) ? ffs(up) - 1 : 0; |
2201 | ctlr_prio = ffs(fup) ? ffs(fup) - 1 : fcoe_prio; | |
6f6c2aa3 | 2202 | } |
2203 | #endif | |
c216e876 HR |
2204 | fcoe->priority = fcoe_prio; |
2205 | ctlr->priority = ctlr_prio; | |
6f6c2aa3 | 2206 | } |
2207 | ||
435c8667 RL |
2208 | enum fcoe_create_link_state { |
2209 | FCOE_CREATE_LINK_DOWN, | |
2210 | FCOE_CREATE_LINK_UP, | |
2211 | }; | |
2212 | ||
85b4aa49 | 2213 | /** |
435c8667 RL |
2214 | * _fcoe_create() - (internal) Create a fcoe interface |
2215 | * @netdev : The net_device object the Ethernet interface to create on | |
2216 | * @fip_mode: The FIP mode for this creation | |
2217 | * @link_state: The ctlr link state on creation | |
1875f27e | 2218 | * |
435c8667 RL |
2219 | * Called from either the libfcoe 'create' module parameter |
2220 | * via fcoe_create or from fcoe_syfs's ctlr_create file. | |
85b4aa49 | 2221 | * |
435c8667 RL |
2222 | * libfcoe's 'create' module parameter is deprecated so some |
2223 | * consolidation of code can be done when that interface is | |
2224 | * removed. | |
34f42a07 | 2225 | */ |
1917d42d | 2226 | static int _fcoe_create(struct net_device *netdev, enum fip_mode fip_mode, |
435c8667 | 2227 | enum fcoe_create_link_state link_state) |
85b4aa49 | 2228 | { |
b2085a4e | 2229 | int rc = 0; |
8d55e507 | 2230 | struct fcoe_ctlr_device *ctlr_dev; |
619fe4be | 2231 | struct fcoe_ctlr *ctlr; |
030f4e00 | 2232 | struct fcoe_interface *fcoe; |
af7f85d9 | 2233 | struct fc_lport *lport; |
85b4aa49 | 2234 | |
dfc1d0fe | 2235 | mutex_lock(&fcoe_config_mutex); |
ee5df628 | 2236 | rtnl_lock(); |
34ce27bc | 2237 | |
85b4aa49 RL |
2238 | /* look for existing lport */ |
2239 | if (fcoe_hostlist_lookup(netdev)) { | |
2240 | rc = -EEXIST; | |
78a58246 | 2241 | goto out_nodev; |
85b4aa49 | 2242 | } |
85b4aa49 | 2243 | |
1dd454d9 | 2244 | fcoe = fcoe_interface_create(netdev, fip_mode); |
7287fb91 RL |
2245 | if (IS_ERR(fcoe)) { |
2246 | rc = PTR_ERR(fcoe); | |
78a58246 | 2247 | goto out_nodev; |
030f4e00 CL |
2248 | } |
2249 | ||
619fe4be | 2250 | ctlr = fcoe_to_ctlr(fcoe); |
8d55e507 RL |
2251 | ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr); |
2252 | lport = fcoe_if_create(fcoe, &ctlr_dev->dev, 0); | |
af7f85d9 | 2253 | if (IS_ERR(lport)) { |
d5488eb9 | 2254 | printk(KERN_ERR "fcoe: Failed to create interface (%s)\n", |
85b4aa49 | 2255 | netdev->name); |
85b4aa49 | 2256 | rc = -EIO; |
848e7d5b | 2257 | rtnl_unlock(); |
2e70e241 | 2258 | fcoe_interface_cleanup(fcoe); |
f9c4358e RL |
2259 | mutex_unlock(&fcoe_config_mutex); |
2260 | fcoe_ctlr_device_delete(ctlr_dev); | |
3011b482 | 2261 | return rc; |
85b4aa49 | 2262 | } |
030f4e00 | 2263 | |
54b649f8 | 2264 | /* Make this the "master" N_Port */ |
619fe4be | 2265 | ctlr->lp = lport; |
54b649f8 | 2266 | |
6f6c2aa3 | 2267 | /* setup DCB priority attributes. */ |
2268 | fcoe_dcb_create(fcoe); | |
2269 | ||
54b649f8 CL |
2270 | /* start FIP Discovery and FLOGI */ |
2271 | lport->boot_time = jiffies; | |
2272 | fc_fabric_login(lport); | |
435c8667 RL |
2273 | |
2274 | /* | |
2275 | * If the fcoe_ctlr_device is to be set to DISABLED | |
2276 | * it must be done after the lport is added to the | |
2277 | * hostlist, but before the rtnl_lock is released. | |
2278 | * This is because the rtnl_lock protects the | |
2279 | * hostlist that fcoe_device_notification uses. If | |
2280 | * the FCoE Controller is intended to be created | |
2281 | * DISABLED then 'enabled' needs to be considered | |
2282 | * handling link events. 'enabled' must be set | |
2283 | * before the lport can be found in the hostlist | |
2284 | * when a link up event is received. | |
2285 | */ | |
2286 | if (link_state == FCOE_CREATE_LINK_UP) | |
2287 | ctlr_dev->enabled = FCOE_CTLR_ENABLED; | |
2288 | else | |
2289 | ctlr_dev->enabled = FCOE_CTLR_DISABLED; | |
2290 | ||
2291 | if (link_state == FCOE_CREATE_LINK_UP && | |
2292 | !fcoe_link_ok(lport)) { | |
22805123 | 2293 | rtnl_unlock(); |
619fe4be | 2294 | fcoe_ctlr_link_up(ctlr); |
22805123 RL |
2295 | mutex_unlock(&fcoe_config_mutex); |
2296 | return rc; | |
2297 | } | |
030f4e00 | 2298 | |
85b4aa49 | 2299 | out_nodev: |
34ce27bc | 2300 | rtnl_unlock(); |
dfc1d0fe | 2301 | mutex_unlock(&fcoe_config_mutex); |
3011b482 | 2302 | |
85b4aa49 RL |
2303 | return rc; |
2304 | } | |
2305 | ||
435c8667 RL |
2306 | /** |
2307 | * fcoe_create() - Create a fcoe interface | |
2308 | * @netdev : The net_device object the Ethernet interface to create on | |
2309 | * @fip_mode: The FIP mode for this creation | |
2310 | * | |
2311 | * Called from fcoe transport | |
2312 | * | |
2313 | * Returns: 0 for success | |
2314 | */ | |
1917d42d | 2315 | static int fcoe_create(struct net_device *netdev, enum fip_mode fip_mode) |
435c8667 RL |
2316 | { |
2317 | return _fcoe_create(netdev, fip_mode, FCOE_CREATE_LINK_UP); | |
2318 | } | |
2319 | ||
2320 | /** | |
2321 | * fcoe_ctlr_alloc() - Allocate a fcoe interface from fcoe_sysfs | |
2322 | * @netdev: The net_device to be used by the allocated FCoE Controller | |
2323 | * | |
2324 | * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr | |
2325 | * in a link_down state. The allows the user an opportunity to configure | |
2326 | * the FCoE Controller from sysfs before enabling the FCoE Controller. | |
2327 | * | |
2328 | * Creating in with this routine starts the FCoE Controller in Fabric | |
2329 | * mode. The user can change to VN2VN or another mode before enabling. | |
2330 | */ | |
2331 | static int fcoe_ctlr_alloc(struct net_device *netdev) | |
2332 | { | |
2333 | return _fcoe_create(netdev, FIP_MODE_FABRIC, | |
2334 | FCOE_CREATE_LINK_DOWN); | |
2335 | } | |
2336 | ||
5e4f8fe7 RL |
2337 | /** |
2338 | * fcoe_link_ok() - Check if the link is OK for a local port | |
2339 | * @lport: The local port to check link on | |
2340 | * | |
2341 | * Returns: 0 if link is UP and OK, -1 if not | |
2342 | * | |
2343 | */ | |
7c9c6841 | 2344 | static int fcoe_link_ok(struct fc_lport *lport) |
5e4f8fe7 | 2345 | { |
8597ae8b | 2346 | struct net_device *netdev = fcoe_netdev(lport); |
5e4f8fe7 RL |
2347 | |
2348 | if (netif_oper_up(netdev)) | |
2349 | return 0; | |
2350 | return -1; | |
2351 | } | |
2352 | ||
34f42a07 | 2353 | /** |
1875f27e RL |
2354 | * fcoe_percpu_clean() - Clear all pending skbs for an local port |
2355 | * @lport: The local port whose skbs are to be cleared | |
e7a51997 JE |
2356 | * |
2357 | * Must be called with fcoe_create_mutex held to single-thread completion. | |
2358 | * | |
4b9bc86d SAS |
2359 | * This flushes the pending skbs by flush the work item for each CPU. The work |
2360 | * item on each possible CPU is flushed because we may have used the per-CPU | |
2361 | * struct of an offline CPU. | |
85b4aa49 | 2362 | */ |
7c9c6841 | 2363 | static void fcoe_percpu_clean(struct fc_lport *lport) |
85b4aa49 | 2364 | { |
85b4aa49 | 2365 | struct fcoe_percpu_s *pp; |
5e5e92df | 2366 | unsigned int cpu; |
85b4aa49 | 2367 | |
5e5e92df RL |
2368 | for_each_possible_cpu(cpu) { |
2369 | pp = &per_cpu(fcoe_percpu, cpu); | |
e7a51997 | 2370 | |
4b9bc86d | 2371 | flush_work(&pp->work); |
85b4aa49 RL |
2372 | } |
2373 | } | |
85b4aa49 | 2374 | |
34f42a07 | 2375 | /** |
1875f27e RL |
2376 | * fcoe_reset() - Reset a local port |
2377 | * @shost: The SCSI host associated with the local port to be reset | |
85b4aa49 | 2378 | * |
1875f27e | 2379 | * Returns: Always 0 (return value required by FC transport template) |
85b4aa49 | 2380 | */ |
7c9c6841 | 2381 | static int fcoe_reset(struct Scsi_Host *shost) |
85b4aa49 RL |
2382 | { |
2383 | struct fc_lport *lport = shost_priv(shost); | |
d2f80952 VD |
2384 | struct fcoe_port *port = lport_priv(lport); |
2385 | struct fcoe_interface *fcoe = port->priv; | |
619fe4be | 2386 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
435c8667 | 2387 | struct fcoe_ctlr_device *cdev = fcoe_ctlr_to_ctlr_dev(ctlr); |
d2f80952 | 2388 | |
619fe4be RL |
2389 | fcoe_ctlr_link_down(ctlr); |
2390 | fcoe_clean_pending_queue(ctlr->lp); | |
435c8667 RL |
2391 | |
2392 | if (cdev->enabled != FCOE_CTLR_DISABLED && | |
2393 | !fcoe_link_ok(ctlr->lp)) | |
619fe4be | 2394 | fcoe_ctlr_link_up(ctlr); |
85b4aa49 RL |
2395 | return 0; |
2396 | } | |
85b4aa49 | 2397 | |
34f42a07 | 2398 | /** |
1875f27e RL |
2399 | * fcoe_hostlist_lookup_port() - Find the FCoE interface associated with a net device |
2400 | * @netdev: The net device used as a key | |
85b4aa49 | 2401 | * |
1875f27e RL |
2402 | * Locking: Must be called with the RNL mutex held. |
2403 | * | |
2404 | * Returns: NULL or the FCoE interface | |
85b4aa49 | 2405 | */ |
014f5c3f | 2406 | static struct fcoe_interface * |
1875f27e | 2407 | fcoe_hostlist_lookup_port(const struct net_device *netdev) |
85b4aa49 | 2408 | { |
014f5c3f | 2409 | struct fcoe_interface *fcoe; |
85b4aa49 | 2410 | |
014f5c3f | 2411 | list_for_each_entry(fcoe, &fcoe_hostlist, list) { |
1875f27e | 2412 | if (fcoe->netdev == netdev) |
014f5c3f | 2413 | return fcoe; |
85b4aa49 | 2414 | } |
85b4aa49 RL |
2415 | return NULL; |
2416 | } | |
2417 | ||
34f42a07 | 2418 | /** |
1875f27e RL |
2419 | * fcoe_hostlist_lookup() - Find the local port associated with a |
2420 | * given net device | |
2421 | * @netdev: The netdevice used as a key | |
85b4aa49 | 2422 | * |
1875f27e RL |
2423 | * Locking: Must be called with the RTNL mutex held |
2424 | * | |
2425 | * Returns: NULL or the local port | |
85b4aa49 | 2426 | */ |
090eb6c4 | 2427 | static struct fc_lport *fcoe_hostlist_lookup(const struct net_device *netdev) |
85b4aa49 | 2428 | { |
619fe4be | 2429 | struct fcoe_ctlr *ctlr; |
014f5c3f | 2430 | struct fcoe_interface *fcoe; |
85b4aa49 | 2431 | |
014f5c3f | 2432 | fcoe = fcoe_hostlist_lookup_port(netdev); |
619fe4be RL |
2433 | ctlr = fcoe_to_ctlr(fcoe); |
2434 | return (fcoe) ? ctlr->lp : NULL; | |
85b4aa49 | 2435 | } |
85b4aa49 | 2436 | |
34f42a07 | 2437 | /** |
1875f27e RL |
2438 | * fcoe_hostlist_add() - Add the FCoE interface identified by a local |
2439 | * port to the hostlist | |
2440 | * @lport: The local port that identifies the FCoE interface to be added | |
85b4aa49 | 2441 | * |
090eb6c4 | 2442 | * Locking: must be called with the RTNL mutex held |
1875f27e RL |
2443 | * |
2444 | * Returns: 0 for success | |
85b4aa49 | 2445 | */ |
090eb6c4 | 2446 | static int fcoe_hostlist_add(const struct fc_lport *lport) |
85b4aa49 | 2447 | { |
014f5c3f CL |
2448 | struct fcoe_interface *fcoe; |
2449 | struct fcoe_port *port; | |
2450 | ||
2451 | fcoe = fcoe_hostlist_lookup_port(fcoe_netdev(lport)); | |
2452 | if (!fcoe) { | |
2453 | port = lport_priv(lport); | |
8597ae8b | 2454 | fcoe = port->priv; |
014f5c3f | 2455 | list_add_tail(&fcoe->list, &fcoe_hostlist); |
85b4aa49 RL |
2456 | } |
2457 | return 0; | |
2458 | } | |
85b4aa49 | 2459 | |
f9184df3 NH |
2460 | /** |
2461 | * fcoe_hostlist_del() - Remove the FCoE interface identified by a local | |
2462 | * port to the hostlist | |
2463 | * @lport: The local port that identifies the FCoE interface to be added | |
2464 | * | |
2465 | * Locking: must be called with the RTNL mutex held | |
2466 | * | |
2467 | */ | |
2468 | static void fcoe_hostlist_del(const struct fc_lport *lport) | |
2469 | { | |
2470 | struct fcoe_interface *fcoe; | |
2471 | struct fcoe_port *port; | |
2472 | ||
2473 | port = lport_priv(lport); | |
2474 | fcoe = port->priv; | |
2475 | list_del(&fcoe->list); | |
2476 | return; | |
2477 | } | |
78a58246 YZ |
2478 | |
2479 | static struct fcoe_transport fcoe_sw_transport = { | |
2480 | .name = {FCOE_TRANSPORT_DEFAULT}, | |
2481 | .attached = false, | |
2482 | .list = LIST_HEAD_INIT(fcoe_sw_transport.list), | |
2483 | .match = fcoe_match, | |
435c8667 | 2484 | .alloc = fcoe_ctlr_alloc, |
78a58246 YZ |
2485 | .create = fcoe_create, |
2486 | .destroy = fcoe_destroy, | |
2487 | .enable = fcoe_enable, | |
2488 | .disable = fcoe_disable, | |
2489 | }; | |
2490 | ||
85b4aa49 | 2491 | /** |
1875f27e | 2492 | * fcoe_init() - Initialize fcoe.ko |
85b4aa49 | 2493 | * |
1875f27e | 2494 | * Returns: 0 on success, or a negative value on failure |
34f42a07 | 2495 | */ |
85b4aa49 RL |
2496 | static int __init fcoe_init(void) |
2497 | { | |
1875f27e | 2498 | struct fcoe_percpu_s *p; |
38eccabd | 2499 | unsigned int cpu; |
8976f424 | 2500 | int rc = 0; |
85b4aa49 | 2501 | |
2ca32b48 TH |
2502 | fcoe_wq = alloc_workqueue("fcoe", 0, 0); |
2503 | if (!fcoe_wq) | |
2504 | return -ENOMEM; | |
2505 | ||
78a58246 YZ |
2506 | /* register as a fcoe transport */ |
2507 | rc = fcoe_transport_attach(&fcoe_sw_transport); | |
2508 | if (rc) { | |
2509 | printk(KERN_ERR "failed to register an fcoe transport, check " | |
2510 | "if libfcoe is loaded\n"); | |
a561a8ea | 2511 | goto out_destroy; |
78a58246 YZ |
2512 | } |
2513 | ||
dfc1d0fe CL |
2514 | mutex_lock(&fcoe_config_mutex); |
2515 | ||
38eccabd | 2516 | for_each_possible_cpu(cpu) { |
4b9bc86d SAS |
2517 | p = per_cpu_ptr(&fcoe_percpu, cpu); |
2518 | INIT_WORK(&p->work, fcoe_receive_work); | |
38eccabd RL |
2519 | skb_queue_head_init(&p->fcoe_rx_list); |
2520 | } | |
2521 | ||
8976f424 | 2522 | /* Setup link change notification */ |
85b4aa49 RL |
2523 | fcoe_dev_setup(); |
2524 | ||
5892c32f CL |
2525 | rc = fcoe_if_init(); |
2526 | if (rc) | |
2527 | goto out_free; | |
85b4aa49 | 2528 | |
dfc1d0fe | 2529 | mutex_unlock(&fcoe_config_mutex); |
85b4aa49 | 2530 | return 0; |
8976f424 RL |
2531 | |
2532 | out_free: | |
dfc1d0fe | 2533 | mutex_unlock(&fcoe_config_mutex); |
a561a8ea | 2534 | out_destroy: |
2ca32b48 | 2535 | destroy_workqueue(fcoe_wq); |
8976f424 | 2536 | return rc; |
85b4aa49 RL |
2537 | } |
2538 | module_init(fcoe_init); | |
2539 | ||
2540 | /** | |
1875f27e | 2541 | * fcoe_exit() - Clean up fcoe.ko |
85b4aa49 | 2542 | * |
1875f27e | 2543 | * Returns: 0 on success or a negative value on failure |
34f42a07 | 2544 | */ |
85b4aa49 RL |
2545 | static void __exit fcoe_exit(void) |
2546 | { | |
014f5c3f | 2547 | struct fcoe_interface *fcoe, *tmp; |
619fe4be | 2548 | struct fcoe_ctlr *ctlr; |
2e70e241 | 2549 | struct fcoe_port *port; |
1875f27e | 2550 | unsigned int cpu; |
85b4aa49 | 2551 | |
dfc1d0fe CL |
2552 | mutex_lock(&fcoe_config_mutex); |
2553 | ||
85b4aa49 RL |
2554 | fcoe_dev_cleanup(); |
2555 | ||
5919a595 | 2556 | /* releases the associated fcoe hosts */ |
090eb6c4 CL |
2557 | rtnl_lock(); |
2558 | list_for_each_entry_safe(fcoe, tmp, &fcoe_hostlist, list) { | |
619fe4be RL |
2559 | ctlr = fcoe_to_ctlr(fcoe); |
2560 | port = lport_priv(ctlr->lp); | |
f9184df3 | 2561 | fcoe_hostlist_del(port->lport); |
2ca32b48 | 2562 | queue_work(fcoe_wq, &port->destroy_work); |
c863df33 | 2563 | } |
090eb6c4 | 2564 | rtnl_unlock(); |
85b4aa49 | 2565 | |
4b9bc86d SAS |
2566 | for_each_possible_cpu(cpu) |
2567 | fcoe_thread_cleanup_local(cpu); | |
cd45ae38 | 2568 | |
dfc1d0fe | 2569 | mutex_unlock(&fcoe_config_mutex); |
2e70e241 | 2570 | |
2ca32b48 TH |
2571 | /* |
2572 | * destroy_work's may be chained but destroy_workqueue() | |
2573 | * can take care of them. Just kill the fcoe_wq. | |
2574 | */ | |
2575 | destroy_workqueue(fcoe_wq); | |
2e70e241 | 2576 | |
2ca32b48 TH |
2577 | /* |
2578 | * Detaching from the scsi transport must happen after all | |
2579 | * destroys are done on the fcoe_wq. destroy_workqueue will | |
2580 | * enusre the fcoe_wq is flushed. | |
2581 | */ | |
2e70e241 | 2582 | fcoe_if_exit(); |
78a58246 YZ |
2583 | |
2584 | /* detach from fcoe transport */ | |
2585 | fcoe_transport_detach(&fcoe_sw_transport); | |
85b4aa49 RL |
2586 | } |
2587 | module_exit(fcoe_exit); | |
11b56188 CL |
2588 | |
2589 | /** | |
2590 | * fcoe_flogi_resp() - FCoE specific FLOGI and FDISC response handler | |
2591 | * @seq: active sequence in the FLOGI or FDISC exchange | |
2592 | * @fp: response frame, or error encoded in a pointer (timeout) | |
78cfe97f | 2593 | * @arg: pointer to the fcoe_ctlr structure |
11b56188 | 2594 | * |
65155b37 | 2595 | * This handles MAC address management for FCoE, then passes control on to |
11b56188 CL |
2596 | * the libfc FLOGI response handler. |
2597 | */ | |
2598 | static void fcoe_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, void *arg) | |
2599 | { | |
2600 | struct fcoe_ctlr *fip = arg; | |
2601 | struct fc_exch *exch = fc_seq_exch(seq); | |
2602 | struct fc_lport *lport = exch->lp; | |
2603 | u8 *mac; | |
2604 | ||
2605 | if (IS_ERR(fp)) | |
2606 | goto done; | |
2607 | ||
2608 | mac = fr_cb(fp)->granted_mac; | |
907c07d4 VD |
2609 | /* pre-FIP */ |
2610 | if (is_zero_ether_addr(mac)) | |
2611 | fcoe_ctlr_recv_flogi(fip, lport, fp); | |
2612 | if (!is_zero_ether_addr(mac)) | |
2613 | fcoe_update_src_mac(lport, mac); | |
11b56188 CL |
2614 | done: |
2615 | fc_lport_flogi_resp(seq, fp, lport); | |
2616 | } | |
2617 | ||
2618 | /** | |
2619 | * fcoe_logo_resp() - FCoE specific LOGO response handler | |
2620 | * @seq: active sequence in the LOGO exchange | |
2621 | * @fp: response frame, or error encoded in a pointer (timeout) | |
78cfe97f | 2622 | * @arg: pointer to the fcoe_ctlr structure |
11b56188 | 2623 | * |
65155b37 | 2624 | * This handles MAC address management for FCoE, then passes control on to |
11b56188 CL |
2625 | * the libfc LOGO response handler. |
2626 | */ | |
2627 | static void fcoe_logo_resp(struct fc_seq *seq, struct fc_frame *fp, void *arg) | |
2628 | { | |
386309ce | 2629 | struct fc_lport *lport = arg; |
11b56188 CL |
2630 | static u8 zero_mac[ETH_ALEN] = { 0 }; |
2631 | ||
2632 | if (!IS_ERR(fp)) | |
386309ce | 2633 | fcoe_update_src_mac(lport, zero_mac); |
11b56188 CL |
2634 | fc_lport_logo_resp(seq, fp, lport); |
2635 | } | |
2636 | ||
2637 | /** | |
2638 | * fcoe_elsct_send - FCoE specific ELS handler | |
2639 | * | |
2640 | * This does special case handling of FIP encapsualted ELS exchanges for FCoE, | |
2641 | * using FCoE specific response handlers and passing the FIP controller as | |
2642 | * the argument (the lport is still available from the exchange). | |
2643 | * | |
2644 | * Most of the work here is just handed off to the libfc routine. | |
2645 | */ | |
1875f27e RL |
2646 | static struct fc_seq *fcoe_elsct_send(struct fc_lport *lport, u32 did, |
2647 | struct fc_frame *fp, unsigned int op, | |
2648 | void (*resp)(struct fc_seq *, | |
2649 | struct fc_frame *, | |
2650 | void *), | |
2651 | void *arg, u32 timeout) | |
11b56188 CL |
2652 | { |
2653 | struct fcoe_port *port = lport_priv(lport); | |
8597ae8b | 2654 | struct fcoe_interface *fcoe = port->priv; |
619fe4be | 2655 | struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe); |
11b56188 CL |
2656 | struct fc_frame_header *fh = fc_frame_header_get(fp); |
2657 | ||
2658 | switch (op) { | |
2659 | case ELS_FLOGI: | |
2660 | case ELS_FDISC: | |
e10f8c66 JE |
2661 | if (lport->point_to_multipoint) |
2662 | break; | |
11b56188 CL |
2663 | return fc_elsct_send(lport, did, fp, op, fcoe_flogi_resp, |
2664 | fip, timeout); | |
2665 | case ELS_LOGO: | |
2666 | /* only hook onto fabric logouts, not port logouts */ | |
2667 | if (ntoh24(fh->fh_d_id) != FC_FID_FLOGI) | |
2668 | break; | |
2669 | return fc_elsct_send(lport, did, fp, op, fcoe_logo_resp, | |
386309ce | 2670 | lport, timeout); |
11b56188 CL |
2671 | } |
2672 | return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); | |
2673 | } | |
2674 | ||
9a05753b CL |
2675 | /** |
2676 | * fcoe_vport_create() - create an fc_host/scsi_host for a vport | |
2677 | * @vport: fc_vport object to create a new fc_host for | |
2678 | * @disabled: start the new fc_host in a disabled state by default? | |
2679 | * | |
2680 | * Returns: 0 for success | |
2681 | */ | |
2682 | static int fcoe_vport_create(struct fc_vport *vport, bool disabled) | |
2683 | { | |
2684 | struct Scsi_Host *shost = vport_to_shost(vport); | |
2685 | struct fc_lport *n_port = shost_priv(shost); | |
2686 | struct fcoe_port *port = lport_priv(n_port); | |
8597ae8b | 2687 | struct fcoe_interface *fcoe = port->priv; |
9a05753b CL |
2688 | struct net_device *netdev = fcoe->netdev; |
2689 | struct fc_lport *vn_port; | |
bdf25218 NP |
2690 | int rc; |
2691 | char buf[32]; | |
2692 | ||
2693 | rc = fcoe_validate_vport_create(vport); | |
2694 | if (rc) { | |
d834895c | 2695 | fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); |
bdf25218 NP |
2696 | printk(KERN_ERR "fcoe: Failed to create vport, " |
2697 | "WWPN (0x%s) already exists\n", | |
2698 | buf); | |
2699 | return rc; | |
2700 | } | |
9a05753b CL |
2701 | |
2702 | mutex_lock(&fcoe_config_mutex); | |
4bc71cb9 | 2703 | rtnl_lock(); |
9a05753b | 2704 | vn_port = fcoe_if_create(fcoe, &vport->dev, 1); |
4bc71cb9 | 2705 | rtnl_unlock(); |
9a05753b CL |
2706 | mutex_unlock(&fcoe_config_mutex); |
2707 | ||
2708 | if (IS_ERR(vn_port)) { | |
2709 | printk(KERN_ERR "fcoe: fcoe_vport_create(%s) failed\n", | |
2710 | netdev->name); | |
2711 | return -EIO; | |
2712 | } | |
2713 | ||
2714 | if (disabled) { | |
2715 | fc_vport_set_state(vport, FC_VPORT_DISABLED); | |
2716 | } else { | |
2717 | vn_port->boot_time = jiffies; | |
2718 | fc_fabric_login(vn_port); | |
2719 | fc_vport_setlink(vn_port); | |
2720 | } | |
2721 | return 0; | |
2722 | } | |
2723 | ||
2724 | /** | |
2725 | * fcoe_vport_destroy() - destroy the fc_host/scsi_host for a vport | |
2726 | * @vport: fc_vport object that is being destroyed | |
2727 | * | |
2728 | * Returns: 0 for success | |
2729 | */ | |
2730 | static int fcoe_vport_destroy(struct fc_vport *vport) | |
2731 | { | |
2732 | struct Scsi_Host *shost = vport_to_shost(vport); | |
2733 | struct fc_lport *n_port = shost_priv(shost); | |
2734 | struct fc_lport *vn_port = vport->dd_data; | |
9a05753b CL |
2735 | |
2736 | mutex_lock(&n_port->lp_mutex); | |
2737 | list_del(&vn_port->list); | |
2738 | mutex_unlock(&n_port->lp_mutex); | |
ccefd23e RL |
2739 | |
2740 | mutex_lock(&fcoe_config_mutex); | |
2741 | fcoe_if_destroy(vn_port); | |
2742 | mutex_unlock(&fcoe_config_mutex); | |
2743 | ||
9a05753b CL |
2744 | return 0; |
2745 | } | |
2746 | ||
2747 | /** | |
2748 | * fcoe_vport_disable() - change vport state | |
2749 | * @vport: vport to bring online/offline | |
2750 | * @disable: should the vport be disabled? | |
2751 | */ | |
2752 | static int fcoe_vport_disable(struct fc_vport *vport, bool disable) | |
2753 | { | |
2754 | struct fc_lport *lport = vport->dd_data; | |
2755 | ||
2756 | if (disable) { | |
2757 | fc_vport_set_state(vport, FC_VPORT_DISABLED); | |
2758 | fc_fabric_logoff(lport); | |
2759 | } else { | |
2760 | lport->boot_time = jiffies; | |
2761 | fc_fabric_login(lport); | |
2762 | fc_vport_setlink(lport); | |
2763 | } | |
2764 | ||
2765 | return 0; | |
2766 | } | |
2767 | ||
dc8596d3 CL |
2768 | /** |
2769 | * fcoe_vport_set_symbolic_name() - append vport string to symbolic name | |
2770 | * @vport: fc_vport with a new symbolic name string | |
2771 | * | |
2772 | * After generating a new symbolic name string, a new RSPN_ID request is | |
2773 | * sent to the name server. There is no response handler, so if it fails | |
2774 | * for some reason it will not be retried. | |
2775 | */ | |
2776 | static void fcoe_set_vport_symbolic_name(struct fc_vport *vport) | |
2777 | { | |
2778 | struct fc_lport *lport = vport->dd_data; | |
2779 | struct fc_frame *fp; | |
2780 | size_t len; | |
2781 | ||
2782 | snprintf(fc_host_symbolic_name(lport->host), FC_SYMBOLIC_NAME_SIZE, | |
2783 | "%s v%s over %s : %s", FCOE_NAME, FCOE_VERSION, | |
2784 | fcoe_netdev(lport)->name, vport->symbolic_name); | |
2785 | ||
2786 | if (lport->state != LPORT_ST_READY) | |
2787 | return; | |
2788 | ||
2789 | len = strnlen(fc_host_symbolic_name(lport->host), 255); | |
2790 | fp = fc_frame_alloc(lport, | |
2791 | sizeof(struct fc_ct_hdr) + | |
2792 | sizeof(struct fc_ns_rspn) + len); | |
2793 | if (!fp) | |
2794 | return; | |
2795 | lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RSPN_ID, | |
b94f8951 | 2796 | NULL, NULL, 3 * lport->r_a_tov); |
dc8596d3 | 2797 | } |
b84056bf | 2798 | |
8d55e507 RL |
2799 | static void fcoe_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev) |
2800 | { | |
2801 | struct fcoe_ctlr_device *ctlr_dev = | |
2802 | fcoe_fcf_dev_to_ctlr_dev(fcf_dev); | |
2803 | struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev); | |
2804 | struct fcoe_interface *fcoe = fcoe_ctlr_priv(ctlr); | |
2805 | ||
2806 | fcf_dev->vlan_id = vlan_dev_vlan_id(fcoe->netdev); | |
2807 | } | |
2808 | ||
7d65b0df JE |
2809 | /** |
2810 | * fcoe_set_port_id() - Callback from libfc when Port_ID is set. | |
2811 | * @lport: the local port | |
2812 | * @port_id: the port ID | |
2813 | * @fp: the received frame, if any, that caused the port_id to be set. | |
2814 | * | |
2815 | * This routine handles the case where we received a FLOGI and are | |
2816 | * entering point-to-point mode. We need to call fcoe_ctlr_recv_flogi() | |
2817 | * so it can set the non-mapped mode and gateway address. | |
2818 | * | |
2819 | * The FLOGI LS_ACC is handled by fcoe_flogi_resp(). | |
2820 | */ | |
2821 | static void fcoe_set_port_id(struct fc_lport *lport, | |
2822 | u32 port_id, struct fc_frame *fp) | |
2823 | { | |
2824 | struct fcoe_port *port = lport_priv(lport); | |
8597ae8b | 2825 | struct fcoe_interface *fcoe = port->priv; |
619fe4be | 2826 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
7d65b0df JE |
2827 | |
2828 | if (fp && fc_frame_payload_op(fp) == ELS_FLOGI) | |
619fe4be | 2829 | fcoe_ctlr_recv_flogi(ctlr, lport, fp); |
7d65b0df | 2830 | } |