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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 | ||
69aabcce HR |
66 | unsigned int fcoe_e_d_tov = 2 * 1000; |
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 | ||
70 | unsigned int fcoe_r_a_tov = 2 * 2 * 1000; | |
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 */ | |
5bab87e6 YZ |
330 | real_dev = (netdev->priv_flags & IFF_802_1Q_VLAN) ? |
331 | vlan_dev_real_dev(netdev) : netdev; | |
d1483bb9 | 332 | fcoe->realdev = real_dev; |
54b649f8 | 333 | rcu_read_lock(); |
5bab87e6 | 334 | for_each_dev_addr(real_dev, ha) { |
54b649f8 | 335 | if ((ha->type == NETDEV_HW_ADDR_T_SAN) && |
bf361707 | 336 | (is_valid_ether_addr(ha->addr))) { |
54b649f8 CL |
337 | memcpy(fip->ctl_src_addr, ha->addr, ETH_ALEN); |
338 | fip->spma = 1; | |
339 | break; | |
340 | } | |
341 | } | |
342 | rcu_read_unlock(); | |
343 | ||
344 | /* setup Source Mac Address */ | |
345 | if (!fip->spma) | |
346 | memcpy(fip->ctl_src_addr, netdev->dev_addr, netdev->addr_len); | |
347 | ||
348 | /* | |
349 | * Add FCoE MAC address as second unicast MAC address | |
350 | * or enter promiscuous mode if not capable of listening | |
351 | * for multiple unicast MACs. | |
352 | */ | |
54b649f8 | 353 | memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN); |
a748ee24 | 354 | dev_uc_add(netdev, flogi_maddr); |
54b649f8 | 355 | if (fip->spma) |
a748ee24 | 356 | dev_uc_add(netdev, fip->ctl_src_addr); |
e10f8c66 JE |
357 | if (fip->mode == FIP_MODE_VN2VN) { |
358 | dev_mc_add(netdev, FIP_ALL_VN2VN_MACS); | |
359 | dev_mc_add(netdev, FIP_ALL_P2P_MACS); | |
360 | } else | |
361 | dev_mc_add(netdev, FIP_ALL_ENODE_MACS); | |
54b649f8 CL |
362 | |
363 | /* | |
364 | * setup the receive function from ethernet driver | |
365 | * on the ethertype for the given device | |
366 | */ | |
367 | fcoe->fcoe_packet_type.func = fcoe_rcv; | |
420fa211 | 368 | fcoe->fcoe_packet_type.type = htons(ETH_P_FCOE); |
54b649f8 CL |
369 | fcoe->fcoe_packet_type.dev = netdev; |
370 | dev_add_pack(&fcoe->fcoe_packet_type); | |
371 | ||
372 | fcoe->fip_packet_type.func = fcoe_fip_recv; | |
373 | fcoe->fip_packet_type.type = htons(ETH_P_FIP); | |
374 | fcoe->fip_packet_type.dev = netdev; | |
375 | dev_add_pack(&fcoe->fip_packet_type); | |
376 | ||
d242e668 HR |
377 | if (netdev != real_dev) { |
378 | fcoe->fip_vlan_packet_type.func = fcoe_fip_vlan_recv; | |
379 | fcoe->fip_vlan_packet_type.type = htons(ETH_P_FIP); | |
380 | fcoe->fip_vlan_packet_type.dev = real_dev; | |
381 | dev_add_pack(&fcoe->fip_vlan_packet_type); | |
382 | } | |
54b649f8 CL |
383 | return 0; |
384 | } | |
385 | ||
030f4e00 | 386 | /** |
1875f27e RL |
387 | * fcoe_interface_create() - Create a FCoE interface on a net device |
388 | * @netdev: The net device to create the FCoE interface on | |
1dd454d9 | 389 | * @fip_mode: The mode to use for FIP |
030f4e00 CL |
390 | * |
391 | * Returns: pointer to a struct fcoe_interface or NULL on error | |
392 | */ | |
1dd454d9 JE |
393 | static struct fcoe_interface *fcoe_interface_create(struct net_device *netdev, |
394 | enum fip_state fip_mode) | |
030f4e00 | 395 | { |
8d55e507 | 396 | struct fcoe_ctlr_device *ctlr_dev; |
619fe4be | 397 | struct fcoe_ctlr *ctlr; |
030f4e00 | 398 | struct fcoe_interface *fcoe; |
619fe4be | 399 | int size; |
59d92516 | 400 | int err; |
030f4e00 | 401 | |
7287fb91 RL |
402 | if (!try_module_get(THIS_MODULE)) { |
403 | FCOE_NETDEV_DBG(netdev, | |
404 | "Could not get a reference to the module\n"); | |
405 | fcoe = ERR_PTR(-EBUSY); | |
406 | goto out; | |
407 | } | |
408 | ||
619fe4be | 409 | size = sizeof(struct fcoe_ctlr) + sizeof(struct fcoe_interface); |
8d55e507 RL |
410 | ctlr_dev = fcoe_ctlr_device_add(&netdev->dev, &fcoe_sysfs_templ, |
411 | size); | |
412 | if (!ctlr_dev) { | |
413 | FCOE_DBG("Failed to add fcoe_ctlr_device\n"); | |
7287fb91 | 414 | fcoe = ERR_PTR(-ENOMEM); |
6f68794c | 415 | goto out_putmod; |
030f4e00 CL |
416 | } |
417 | ||
8d55e507 | 418 | ctlr = fcoe_ctlr_device_priv(ctlr_dev); |
9d34876f | 419 | ctlr->cdev = ctlr_dev; |
8d55e507 RL |
420 | fcoe = fcoe_ctlr_priv(ctlr); |
421 | ||
2e70e241 | 422 | dev_hold(netdev); |
54b649f8 CL |
423 | |
424 | /* | |
425 | * Initialize FIP. | |
426 | */ | |
619fe4be RL |
427 | fcoe_ctlr_init(ctlr, fip_mode); |
428 | ctlr->send = fcoe_fip_send; | |
429 | ctlr->update_mac = fcoe_update_src_mac; | |
430 | ctlr->get_src_addr = fcoe_get_src_mac; | |
54b649f8 | 431 | |
59d92516 | 432 | err = fcoe_interface_setup(fcoe, netdev); |
433 | if (err) { | |
619fe4be | 434 | fcoe_ctlr_destroy(ctlr); |
8d55e507 | 435 | fcoe_ctlr_device_delete(ctlr_dev); |
59d92516 | 436 | dev_put(netdev); |
7287fb91 | 437 | fcoe = ERR_PTR(err); |
6f68794c | 438 | goto out_putmod; |
59d92516 | 439 | } |
030f4e00 | 440 | |
7287fb91 RL |
441 | goto out; |
442 | ||
6f68794c | 443 | out_putmod: |
7287fb91 RL |
444 | module_put(THIS_MODULE); |
445 | out: | |
030f4e00 CL |
446 | return fcoe; |
447 | } | |
448 | ||
54b649f8 | 449 | /** |
433eba04 | 450 | * fcoe_interface_remove() - remove FCoE interface from netdev |
1875f27e | 451 | * @fcoe: The FCoE interface to be cleaned up |
2e70e241 CL |
452 | * |
453 | * Caller must be holding the RTNL mutex | |
54b649f8 | 454 | */ |
433eba04 | 455 | static void fcoe_interface_remove(struct fcoe_interface *fcoe) |
54b649f8 CL |
456 | { |
457 | struct net_device *netdev = fcoe->netdev; | |
619fe4be | 458 | struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe); |
54b649f8 | 459 | u8 flogi_maddr[ETH_ALEN]; |
b7a727f1 | 460 | const struct net_device_ops *ops; |
54b649f8 CL |
461 | |
462 | /* | |
463 | * Don't listen for Ethernet packets anymore. | |
464 | * synchronize_net() ensures that the packet handlers are not running | |
465 | * on another CPU. dev_remove_pack() would do that, this calls the | |
466 | * unsyncronized version __dev_remove_pack() to avoid multiple delays. | |
467 | */ | |
468 | __dev_remove_pack(&fcoe->fcoe_packet_type); | |
469 | __dev_remove_pack(&fcoe->fip_packet_type); | |
d242e668 HR |
470 | if (netdev != fcoe->realdev) |
471 | __dev_remove_pack(&fcoe->fip_vlan_packet_type); | |
54b649f8 CL |
472 | synchronize_net(); |
473 | ||
54b649f8 | 474 | /* Delete secondary MAC addresses */ |
54b649f8 | 475 | memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN); |
a748ee24 | 476 | dev_uc_del(netdev, flogi_maddr); |
54b649f8 | 477 | if (fip->spma) |
a748ee24 | 478 | dev_uc_del(netdev, fip->ctl_src_addr); |
e10f8c66 JE |
479 | if (fip->mode == FIP_MODE_VN2VN) { |
480 | dev_mc_del(netdev, FIP_ALL_VN2VN_MACS); | |
481 | dev_mc_del(netdev, FIP_ALL_P2P_MACS); | |
482 | } else | |
483 | dev_mc_del(netdev, FIP_ALL_ENODE_MACS); | |
b7a727f1 YZ |
484 | |
485 | /* Tell the LLD we are done w/ FCoE */ | |
486 | ops = netdev->netdev_ops; | |
487 | if (ops->ndo_fcoe_disable) { | |
488 | if (ops->ndo_fcoe_disable(netdev)) | |
489 | FCOE_NETDEV_DBG(netdev, "Failed to disable FCoE" | |
490 | " specific feature for LLD.\n"); | |
491 | } | |
433eba04 VD |
492 | fcoe->removed = 1; |
493 | } | |
494 | ||
495 | ||
496 | /** | |
497 | * fcoe_interface_cleanup() - Clean up a FCoE interface | |
498 | * @fcoe: The FCoE interface to be cleaned up | |
499 | */ | |
500 | static void fcoe_interface_cleanup(struct fcoe_interface *fcoe) | |
501 | { | |
502 | struct net_device *netdev = fcoe->netdev; | |
619fe4be | 503 | struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe); |
b2085a4e | 504 | |
433eba04 VD |
505 | rtnl_lock(); |
506 | if (!fcoe->removed) | |
507 | fcoe_interface_remove(fcoe); | |
848e7d5b RL |
508 | rtnl_unlock(); |
509 | ||
b2085a4e | 510 | /* Release the self-reference taken during fcoe_interface_create() */ |
1a8ef414 RL |
511 | /* tear-down the FCoE controller */ |
512 | fcoe_ctlr_destroy(fip); | |
619fe4be | 513 | scsi_host_put(fip->lp->host); |
1a8ef414 RL |
514 | dev_put(netdev); |
515 | module_put(THIS_MODULE); | |
030f4e00 CL |
516 | } |
517 | ||
ab6b85c1 | 518 | /** |
1875f27e RL |
519 | * fcoe_fip_recv() - Handler for received FIP frames |
520 | * @skb: The receive skb | |
521 | * @netdev: The associated net device | |
522 | * @ptype: The packet_type structure which was used to register this handler | |
523 | * @orig_dev: The original net_device the the skb was received on. | |
524 | * (in case dev is a bond) | |
ab6b85c1 VD |
525 | * |
526 | * Returns: 0 for success | |
527 | */ | |
1875f27e | 528 | static int fcoe_fip_recv(struct sk_buff *skb, struct net_device *netdev, |
ab6b85c1 VD |
529 | struct packet_type *ptype, |
530 | struct net_device *orig_dev) | |
531 | { | |
259ad85d | 532 | struct fcoe_interface *fcoe; |
619fe4be | 533 | struct fcoe_ctlr *ctlr; |
ab6b85c1 | 534 | |
259ad85d | 535 | fcoe = container_of(ptype, struct fcoe_interface, fip_packet_type); |
619fe4be RL |
536 | ctlr = fcoe_to_ctlr(fcoe); |
537 | fcoe_ctlr_recv(ctlr, skb); | |
ab6b85c1 VD |
538 | return 0; |
539 | } | |
540 | ||
d242e668 HR |
541 | /** |
542 | * fcoe_fip_vlan_recv() - Handler for received FIP VLAN discovery frames | |
543 | * @skb: The receive skb | |
544 | * @netdev: The associated net device | |
545 | * @ptype: The packet_type structure which was used to register this handler | |
546 | * @orig_dev: The original net_device the the skb was received on. | |
547 | * (in case dev is a bond) | |
548 | * | |
549 | * Returns: 0 for success | |
550 | */ | |
551 | static int fcoe_fip_vlan_recv(struct sk_buff *skb, struct net_device *netdev, | |
552 | struct packet_type *ptype, | |
553 | struct net_device *orig_dev) | |
554 | { | |
555 | struct fcoe_interface *fcoe; | |
556 | struct fcoe_ctlr *ctlr; | |
557 | ||
558 | fcoe = container_of(ptype, struct fcoe_interface, fip_vlan_packet_type); | |
559 | ctlr = fcoe_to_ctlr(fcoe); | |
560 | fcoe_ctlr_recv(ctlr, skb); | |
561 | return 0; | |
562 | } | |
563 | ||
980f5156 VD |
564 | /** |
565 | * fcoe_port_send() - Send an Ethernet-encapsulated FIP/FCoE frame | |
566 | * @port: The FCoE port | |
567 | * @skb: The FIP/FCoE packet to be sent | |
568 | */ | |
569 | static void fcoe_port_send(struct fcoe_port *port, struct sk_buff *skb) | |
570 | { | |
571 | if (port->fcoe_pending_queue.qlen) | |
572 | fcoe_check_wait_queue(port->lport, skb); | |
573 | else if (fcoe_start_io(skb)) | |
574 | fcoe_check_wait_queue(port->lport, skb); | |
575 | } | |
576 | ||
ab6b85c1 | 577 | /** |
1875f27e RL |
578 | * fcoe_fip_send() - Send an Ethernet-encapsulated FIP frame |
579 | * @fip: The FCoE controller | |
580 | * @skb: The FIP packet to be sent | |
ab6b85c1 VD |
581 | */ |
582 | static void fcoe_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) | |
583 | { | |
d242e668 HR |
584 | struct fcoe_interface *fcoe = fcoe_from_ctlr(fip); |
585 | struct fip_frame { | |
586 | struct ethhdr eth; | |
587 | struct fip_header fip; | |
588 | } __packed *frame; | |
589 | ||
590 | /* | |
591 | * Use default VLAN for FIP VLAN discovery protocol | |
592 | */ | |
593 | frame = (struct fip_frame *)skb->data; | |
f7e6ed06 HR |
594 | if (ntohs(frame->eth.h_proto) == ETH_P_FIP && |
595 | ntohs(frame->fip.fip_op) == FIP_OP_VLAN && | |
d242e668 HR |
596 | fcoe->realdev != fcoe->netdev) |
597 | skb->dev = fcoe->realdev; | |
598 | else | |
599 | skb->dev = fcoe->netdev; | |
980f5156 | 600 | fcoe_port_send(lport_priv(fip->lp), skb); |
ab6b85c1 VD |
601 | } |
602 | ||
603 | /** | |
1875f27e RL |
604 | * fcoe_update_src_mac() - Update the Ethernet MAC filters |
605 | * @lport: The local port to update the source MAC on | |
606 | * @addr: Unicast MAC address to add | |
ab6b85c1 VD |
607 | * |
608 | * Remove any previously-set unicast MAC filter. | |
609 | * Add secondary FCoE MAC address filter for our OUI. | |
610 | */ | |
11b56188 | 611 | static void fcoe_update_src_mac(struct fc_lport *lport, u8 *addr) |
ab6b85c1 | 612 | { |
11b56188 | 613 | struct fcoe_port *port = lport_priv(lport); |
8597ae8b | 614 | struct fcoe_interface *fcoe = port->priv; |
25024989 | 615 | |
11b56188 | 616 | if (!is_zero_ether_addr(port->data_src_addr)) |
a748ee24 | 617 | dev_uc_del(fcoe->netdev, port->data_src_addr); |
11b56188 | 618 | if (!is_zero_ether_addr(addr)) |
a748ee24 | 619 | dev_uc_add(fcoe->netdev, addr); |
11b56188 | 620 | memcpy(port->data_src_addr, addr, ETH_ALEN); |
ab6b85c1 VD |
621 | } |
622 | ||
11b56188 CL |
623 | /** |
624 | * fcoe_get_src_mac() - return the Ethernet source address for an lport | |
625 | * @lport: libfc lport | |
626 | */ | |
627 | static u8 *fcoe_get_src_mac(struct fc_lport *lport) | |
628 | { | |
629 | struct fcoe_port *port = lport_priv(lport); | |
630 | ||
631 | return port->data_src_addr; | |
632 | } | |
633 | ||
7f349142 | 634 | /** |
1875f27e RL |
635 | * fcoe_lport_config() - Set up a local port |
636 | * @lport: The local port to be setup | |
7f349142 VD |
637 | * |
638 | * Returns: 0 for success | |
639 | */ | |
1875f27e | 640 | static int fcoe_lport_config(struct fc_lport *lport) |
7f349142 | 641 | { |
1875f27e RL |
642 | lport->link_up = 0; |
643 | lport->qfull = 0; | |
644 | lport->max_retry_count = 3; | |
645 | lport->max_rport_retry_count = 3; | |
69aabcce HR |
646 | lport->e_d_tov = fcoe_e_d_tov; |
647 | lport->r_a_tov = fcoe_r_a_tov; | |
1875f27e RL |
648 | lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | |
649 | FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); | |
650 | lport->does_npiv = 1; | |
651 | ||
652 | fc_lport_init_stats(lport); | |
7f349142 VD |
653 | |
654 | /* lport fc_lport related configuration */ | |
1875f27e | 655 | fc_lport_config(lport); |
7f349142 VD |
656 | |
657 | /* offload related configuration */ | |
1875f27e RL |
658 | lport->crc_offload = 0; |
659 | lport->seq_offload = 0; | |
660 | lport->lro_enabled = 0; | |
661 | lport->lro_xid = 0; | |
662 | lport->lso_max = 0; | |
7f349142 VD |
663 | |
664 | return 0; | |
665 | } | |
666 | ||
54a5b21d YZ |
667 | /** |
668 | * fcoe_netdev_features_change - Updates the lport's offload flags based | |
669 | * on the LLD netdev's FCoE feature flags | |
670 | */ | |
671 | static void fcoe_netdev_features_change(struct fc_lport *lport, | |
672 | struct net_device *netdev) | |
673 | { | |
674 | mutex_lock(&lport->lp_mutex); | |
675 | ||
676 | if (netdev->features & NETIF_F_SG) | |
677 | lport->sg_supp = 1; | |
678 | else | |
679 | lport->sg_supp = 0; | |
680 | ||
681 | if (netdev->features & NETIF_F_FCOE_CRC) { | |
682 | lport->crc_offload = 1; | |
683 | FCOE_NETDEV_DBG(netdev, "Supports FCCRC offload\n"); | |
684 | } else { | |
685 | lport->crc_offload = 0; | |
686 | } | |
687 | ||
688 | if (netdev->features & NETIF_F_FSO) { | |
689 | lport->seq_offload = 1; | |
690 | lport->lso_max = netdev->gso_max_size; | |
691 | FCOE_NETDEV_DBG(netdev, "Supports LSO for max len 0x%x\n", | |
692 | lport->lso_max); | |
693 | } else { | |
694 | lport->seq_offload = 0; | |
695 | lport->lso_max = 0; | |
696 | } | |
697 | ||
698 | if (netdev->fcoe_ddp_xid) { | |
699 | lport->lro_enabled = 1; | |
700 | lport->lro_xid = netdev->fcoe_ddp_xid; | |
701 | FCOE_NETDEV_DBG(netdev, "Supports LRO for max xid 0x%x\n", | |
702 | lport->lro_xid); | |
703 | } else { | |
704 | lport->lro_enabled = 0; | |
705 | lport->lro_xid = 0; | |
706 | } | |
707 | ||
708 | mutex_unlock(&lport->lp_mutex); | |
709 | } | |
710 | ||
7f349142 | 711 | /** |
1875f27e RL |
712 | * fcoe_netdev_config() - Set up net devive for SW FCoE |
713 | * @lport: The local port that is associated with the net device | |
714 | * @netdev: The associated net device | |
7f349142 | 715 | * |
1875f27e | 716 | * Must be called after fcoe_lport_config() as it will use local port mutex |
7f349142 | 717 | * |
1875f27e | 718 | * Returns: 0 for success |
7f349142 | 719 | */ |
1875f27e | 720 | static int fcoe_netdev_config(struct fc_lport *lport, struct net_device *netdev) |
7f349142 VD |
721 | { |
722 | u32 mfs; | |
723 | u64 wwnn, wwpn; | |
25024989 | 724 | struct fcoe_interface *fcoe; |
619fe4be | 725 | struct fcoe_ctlr *ctlr; |
014f5c3f | 726 | struct fcoe_port *port; |
7f349142 VD |
727 | |
728 | /* Setup lport private data to point to fcoe softc */ | |
1875f27e | 729 | port = lport_priv(lport); |
8597ae8b | 730 | fcoe = port->priv; |
619fe4be | 731 | ctlr = fcoe_to_ctlr(fcoe); |
7f349142 | 732 | |
9a6cf881 HR |
733 | /* Figure out the VLAN ID, if any */ |
734 | if (netdev->priv_flags & IFF_802_1Q_VLAN) | |
735 | lport->vlan = vlan_dev_vlan_id(netdev); | |
736 | else | |
737 | lport->vlan = 0; | |
738 | ||
7f349142 VD |
739 | /* |
740 | * Determine max frame size based on underlying device and optional | |
741 | * user-configured limit. If the MFS is too low, fcoe_link_ok() | |
742 | * will return 0, so do this first. | |
743 | */ | |
7221d7e5 YZ |
744 | mfs = netdev->mtu; |
745 | if (netdev->features & NETIF_F_FCOE_MTU) { | |
746 | mfs = FCOE_MTU; | |
747 | FCOE_NETDEV_DBG(netdev, "Supports FCOE_MTU of %d bytes\n", mfs); | |
748 | } | |
749 | mfs -= (sizeof(struct fcoe_hdr) + sizeof(struct fcoe_crc_eof)); | |
1875f27e | 750 | if (fc_set_mfs(lport, mfs)) |
7f349142 VD |
751 | return -EINVAL; |
752 | ||
7f349142 | 753 | /* offload features support */ |
54a5b21d | 754 | fcoe_netdev_features_change(lport, netdev); |
7f349142 | 755 | |
014f5c3f CL |
756 | skb_queue_head_init(&port->fcoe_pending_queue); |
757 | port->fcoe_pending_queue_active = 0; | |
1875f27e | 758 | setup_timer(&port->timer, fcoe_queue_timer, (unsigned long)lport); |
7f349142 | 759 | |
5e4f8fe7 RL |
760 | fcoe_link_speed_update(lport); |
761 | ||
1875f27e | 762 | if (!lport->vport) { |
dcece412 | 763 | if (fcoe_get_wwn(netdev, &wwnn, NETDEV_FCOE_WWNN)) |
619fe4be | 764 | wwnn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, 1, 0); |
1875f27e | 765 | fc_set_wwnn(lport, wwnn); |
dcece412 | 766 | if (fcoe_get_wwn(netdev, &wwpn, NETDEV_FCOE_WWPN)) |
619fe4be | 767 | wwpn = fcoe_wwn_from_mac(ctlr->ctl_src_addr, |
cf4aebca | 768 | 2, 0); |
1875f27e | 769 | fc_set_wwpn(lport, wwpn); |
9a05753b | 770 | } |
7f349142 | 771 | |
7f349142 VD |
772 | return 0; |
773 | } | |
774 | ||
775 | /** | |
1875f27e RL |
776 | * fcoe_shost_config() - Set up the SCSI host associated with a local port |
777 | * @lport: The local port | |
1875f27e | 778 | * @dev: The device associated with the SCSI host |
7f349142 VD |
779 | * |
780 | * Must be called after fcoe_lport_config() and fcoe_netdev_config() | |
781 | * | |
1875f27e | 782 | * Returns: 0 for success |
7f349142 | 783 | */ |
8ba00a4b | 784 | static int fcoe_shost_config(struct fc_lport *lport, struct device *dev) |
7f349142 VD |
785 | { |
786 | int rc = 0; | |
787 | ||
788 | /* lport scsi host config */ | |
1875f27e RL |
789 | lport->host->max_lun = FCOE_MAX_LUN; |
790 | lport->host->max_id = FCOE_MAX_FCP_TARGET; | |
791 | lport->host->max_channel = 0; | |
da87bfab VD |
792 | lport->host->max_cmd_len = FCOE_MAX_CMD_LEN; |
793 | ||
1875f27e | 794 | if (lport->vport) |
8ca86f84 | 795 | lport->host->transportt = fcoe_vport_scsi_transport; |
e9084bb8 | 796 | else |
8ca86f84 | 797 | lport->host->transportt = fcoe_nport_scsi_transport; |
7f349142 VD |
798 | |
799 | /* add the new host to the SCSI-ml */ | |
1875f27e | 800 | rc = scsi_add_host(lport->host, dev); |
7f349142 | 801 | if (rc) { |
1875f27e | 802 | FCOE_NETDEV_DBG(fcoe_netdev(lport), "fcoe_shost_config: " |
d5488eb9 | 803 | "error on scsi_add_host\n"); |
7f349142 VD |
804 | return rc; |
805 | } | |
9a05753b | 806 | |
1875f27e | 807 | if (!lport->vport) |
4be929be | 808 | fc_host_max_npiv_vports(lport->host) = USHRT_MAX; |
9a05753b | 809 | |
1875f27e | 810 | snprintf(fc_host_symbolic_name(lport->host), FC_SYMBOLIC_NAME_SIZE, |
5baa17c3 | 811 | "%s v%s over %s", FCOE_NAME, FCOE_VERSION, |
1875f27e | 812 | fcoe_netdev(lport)->name); |
7f349142 VD |
813 | |
814 | return 0; | |
815 | } | |
816 | ||
6fef3902 NP |
817 | |
818 | /** | |
819 | * fcoe_fdmi_info() - Get FDMI related info from net devive for SW FCoE | |
820 | * @lport: The local port that is associated with the net device | |
821 | * @netdev: The associated net device | |
822 | * | |
823 | * Must be called after fcoe_shost_config() as it will use local port mutex | |
824 | * | |
825 | */ | |
826 | static void fcoe_fdmi_info(struct fc_lport *lport, struct net_device *netdev) | |
827 | { | |
828 | struct fcoe_interface *fcoe; | |
829 | struct fcoe_port *port; | |
830 | struct net_device *realdev; | |
831 | int rc; | |
6fef3902 NP |
832 | |
833 | port = lport_priv(lport); | |
834 | fcoe = port->priv; | |
835 | realdev = fcoe->realdev; | |
836 | ||
6fef3902 NP |
837 | /* No FDMI state m/c for NPIV ports */ |
838 | if (lport->vport) | |
839 | return; | |
840 | ||
841 | if (realdev->netdev_ops->ndo_fcoe_get_hbainfo) { | |
f07d46bb NP |
842 | struct netdev_fcoe_hbainfo *fdmi; |
843 | fdmi = kzalloc(sizeof(*fdmi), GFP_KERNEL); | |
844 | if (!fdmi) | |
845 | return; | |
846 | ||
6fef3902 | 847 | rc = realdev->netdev_ops->ndo_fcoe_get_hbainfo(realdev, |
f07d46bb | 848 | fdmi); |
6fef3902 NP |
849 | if (rc) { |
850 | printk(KERN_INFO "fcoe: Failed to retrieve FDMI " | |
851 | "information from netdev.\n"); | |
852 | return; | |
853 | } | |
854 | ||
855 | snprintf(fc_host_serial_number(lport->host), | |
856 | FC_SERIAL_NUMBER_SIZE, | |
857 | "%s", | |
f07d46bb | 858 | fdmi->serial_number); |
6fef3902 NP |
859 | snprintf(fc_host_manufacturer(lport->host), |
860 | FC_SERIAL_NUMBER_SIZE, | |
861 | "%s", | |
f07d46bb | 862 | fdmi->manufacturer); |
6fef3902 NP |
863 | snprintf(fc_host_model(lport->host), |
864 | FC_SYMBOLIC_NAME_SIZE, | |
865 | "%s", | |
f07d46bb | 866 | fdmi->model); |
6fef3902 NP |
867 | snprintf(fc_host_model_description(lport->host), |
868 | FC_SYMBOLIC_NAME_SIZE, | |
869 | "%s", | |
f07d46bb | 870 | fdmi->model_description); |
6fef3902 NP |
871 | snprintf(fc_host_hardware_version(lport->host), |
872 | FC_VERSION_STRING_SIZE, | |
873 | "%s", | |
f07d46bb | 874 | fdmi->hardware_version); |
6fef3902 NP |
875 | snprintf(fc_host_driver_version(lport->host), |
876 | FC_VERSION_STRING_SIZE, | |
877 | "%s", | |
f07d46bb | 878 | fdmi->driver_version); |
6fef3902 NP |
879 | snprintf(fc_host_optionrom_version(lport->host), |
880 | FC_VERSION_STRING_SIZE, | |
881 | "%s", | |
f07d46bb | 882 | fdmi->optionrom_version); |
6fef3902 NP |
883 | snprintf(fc_host_firmware_version(lport->host), |
884 | FC_VERSION_STRING_SIZE, | |
885 | "%s", | |
f07d46bb | 886 | fdmi->firmware_version); |
6fef3902 NP |
887 | |
888 | /* Enable FDMI lport states */ | |
889 | lport->fdmi_enabled = 1; | |
f07d46bb | 890 | kfree(fdmi); |
6fef3902 NP |
891 | } else { |
892 | lport->fdmi_enabled = 0; | |
893 | printk(KERN_INFO "fcoe: No FDMI support.\n"); | |
894 | } | |
895 | } | |
896 | ||
1875f27e RL |
897 | /** |
898 | * fcoe_oem_match() - The match routine for the offloaded exchange manager | |
899 | * @fp: The I/O frame | |
d7179680 | 900 | * |
1875f27e RL |
901 | * This routine will be associated with an exchange manager (EM). When |
902 | * the libfc exchange handling code is looking for an EM to use it will | |
903 | * call this routine and pass it the frame that it wishes to send. This | |
904 | * routine will return True if the associated EM is to be used and False | |
905 | * if the echange code should continue looking for an EM. | |
906 | * | |
907 | * The offload EM that this routine is associated with will handle any | |
908 | * packets that are for SCSI read requests. | |
909 | * | |
1ff9918b KP |
910 | * This has been enhanced to work when FCoE stack is operating in target |
911 | * mode. | |
912 | * | |
1875f27e | 913 | * Returns: True for read types I/O, otherwise returns false. |
d7179680 | 914 | */ |
7c9c6841 | 915 | static bool fcoe_oem_match(struct fc_frame *fp) |
d7179680 | 916 | { |
1ff9918b KP |
917 | struct fc_frame_header *fh = fc_frame_header_get(fp); |
918 | struct fcp_cmnd *fcp; | |
919 | ||
920 | if (fc_fcp_is_read(fr_fsp(fp)) && | |
921 | (fr_fsp(fp)->data_len > fcoe_ddp_min)) | |
922 | return true; | |
a762dce4 YZ |
923 | else if ((fr_fsp(fp) == NULL) && |
924 | (fh->fh_r_ctl == FC_RCTL_DD_UNSOL_CMD) && | |
925 | (ntohs(fh->fh_rx_id) == FC_XID_UNKNOWN)) { | |
1ff9918b | 926 | fcp = fc_frame_payload_get(fp, sizeof(*fcp)); |
a762dce4 YZ |
927 | if ((fcp->fc_flags & FCP_CFL_WRDATA) && |
928 | (ntohl(fcp->fc_dl) > fcoe_ddp_min)) | |
1ff9918b KP |
929 | return true; |
930 | } | |
931 | return false; | |
d7179680 VD |
932 | } |
933 | ||
7f349142 | 934 | /** |
1875f27e RL |
935 | * fcoe_em_config() - Allocate and configure an exchange manager |
936 | * @lport: The local port that the new EM will be associated with | |
7f349142 | 937 | * |
1875f27e | 938 | * Returns: 0 on success |
7f349142 | 939 | */ |
1875f27e | 940 | static inline int fcoe_em_config(struct fc_lport *lport) |
7f349142 | 941 | { |
1875f27e | 942 | struct fcoe_port *port = lport_priv(lport); |
8597ae8b | 943 | struct fcoe_interface *fcoe = port->priv; |
25024989 | 944 | struct fcoe_interface *oldfcoe = NULL; |
1d1b88dc | 945 | struct net_device *old_real_dev, *cur_real_dev; |
d7179680 VD |
946 | u16 min_xid = FCOE_MIN_XID; |
947 | u16 max_xid = FCOE_MAX_XID; | |
948 | ||
949 | /* | |
950 | * Check if need to allocate an em instance for | |
951 | * offload exchange ids to be shared across all VN_PORTs/lport. | |
952 | */ | |
1875f27e RL |
953 | if (!lport->lro_enabled || !lport->lro_xid || |
954 | (lport->lro_xid >= max_xid)) { | |
955 | lport->lro_xid = 0; | |
d7179680 VD |
956 | goto skip_oem; |
957 | } | |
958 | ||
959 | /* | |
960 | * Reuse existing offload em instance in case | |
1d1b88dc | 961 | * it is already allocated on real eth device |
d7179680 | 962 | */ |
25024989 CL |
963 | if (fcoe->netdev->priv_flags & IFF_802_1Q_VLAN) |
964 | cur_real_dev = vlan_dev_real_dev(fcoe->netdev); | |
1d1b88dc | 965 | else |
25024989 | 966 | cur_real_dev = fcoe->netdev; |
1d1b88dc | 967 | |
25024989 | 968 | list_for_each_entry(oldfcoe, &fcoe_hostlist, list) { |
25024989 CL |
969 | if (oldfcoe->netdev->priv_flags & IFF_802_1Q_VLAN) |
970 | old_real_dev = vlan_dev_real_dev(oldfcoe->netdev); | |
1d1b88dc | 971 | else |
25024989 | 972 | old_real_dev = oldfcoe->netdev; |
1d1b88dc VD |
973 | |
974 | if (cur_real_dev == old_real_dev) { | |
991cbb60 | 975 | fcoe->oem = oldfcoe->oem; |
d7179680 VD |
976 | break; |
977 | } | |
978 | } | |
979 | ||
991cbb60 | 980 | if (fcoe->oem) { |
1875f27e | 981 | if (!fc_exch_mgr_add(lport, fcoe->oem, fcoe_oem_match)) { |
d7179680 VD |
982 | printk(KERN_ERR "fcoe_em_config: failed to add " |
983 | "offload em:%p on interface:%s\n", | |
991cbb60 | 984 | fcoe->oem, fcoe->netdev->name); |
d7179680 VD |
985 | return -ENOMEM; |
986 | } | |
987 | } else { | |
1875f27e RL |
988 | fcoe->oem = fc_exch_mgr_alloc(lport, FC_CLASS_3, |
989 | FCOE_MIN_XID, lport->lro_xid, | |
990 | fcoe_oem_match); | |
991cbb60 | 991 | if (!fcoe->oem) { |
d7179680 VD |
992 | printk(KERN_ERR "fcoe_em_config: failed to allocate " |
993 | "em for offload exches on interface:%s\n", | |
25024989 | 994 | fcoe->netdev->name); |
d7179680 VD |
995 | return -ENOMEM; |
996 | } | |
997 | } | |
998 | ||
999 | /* | |
1000 | * Exclude offload EM xid range from next EM xid range. | |
1001 | */ | |
1875f27e | 1002 | min_xid += lport->lro_xid + 1; |
d7179680 VD |
1003 | |
1004 | skip_oem: | |
1875f27e | 1005 | if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, min_xid, max_xid, NULL)) { |
d7179680 | 1006 | printk(KERN_ERR "fcoe_em_config: failed to " |
25024989 | 1007 | "allocate em on interface %s\n", fcoe->netdev->name); |
7f349142 | 1008 | return -ENOMEM; |
d7179680 | 1009 | } |
7f349142 VD |
1010 | |
1011 | return 0; | |
1012 | } | |
1013 | ||
1014 | /** | |
1875f27e RL |
1015 | * fcoe_if_destroy() - Tear down a SW FCoE instance |
1016 | * @lport: The local port to be destroyed | |
34ce27bc | 1017 | * |
7f349142 | 1018 | */ |
af7f85d9 | 1019 | static void fcoe_if_destroy(struct fc_lport *lport) |
7f349142 | 1020 | { |
b2085a4e NP |
1021 | struct fcoe_port *port = lport_priv(lport); |
1022 | struct fcoe_interface *fcoe = port->priv; | |
1023 | struct net_device *netdev = fcoe->netdev; | |
1024 | ||
1025 | FCOE_NETDEV_DBG(netdev, "Destroying interface\n"); | |
1026 | ||
1027 | /* Logout of the fabric */ | |
1028 | fc_fabric_logoff(lport); | |
1029 | ||
1030 | /* Cleanup the fc_lport */ | |
1031 | fc_lport_destroy(lport); | |
1032 | ||
1033 | /* Stop the transmit retry timer */ | |
1034 | del_timer_sync(&port->timer); | |
1035 | ||
1036 | /* Free existing transmit skbs */ | |
1037 | fcoe_clean_pending_queue(lport); | |
1038 | ||
1039 | rtnl_lock(); | |
1040 | if (!is_zero_ether_addr(port->data_src_addr)) | |
1041 | dev_uc_del(netdev, port->data_src_addr); | |
433eba04 VD |
1042 | if (lport->vport) |
1043 | synchronize_net(); | |
1044 | else | |
1045 | fcoe_interface_remove(fcoe); | |
b2085a4e NP |
1046 | rtnl_unlock(); |
1047 | ||
f161fb72 | 1048 | /* Free queued packets for the per-CPU receive threads */ |
af7f85d9 | 1049 | fcoe_percpu_clean(lport); |
f161fb72 | 1050 | |
7f349142 | 1051 | /* Detach from the scsi-ml */ |
af7f85d9 CL |
1052 | fc_remove_host(lport->host); |
1053 | scsi_remove_host(lport->host); | |
7f349142 | 1054 | |
80e736f8 YZ |
1055 | /* Destroy lport scsi_priv */ |
1056 | fc_fcp_destroy(lport); | |
1057 | ||
7f349142 | 1058 | /* There are no more rports or I/O, free the EM */ |
af7f85d9 | 1059 | fc_exch_mgr_free(lport); |
7f349142 | 1060 | |
7f349142 | 1061 | /* Free memory used by statistical counters */ |
af7f85d9 | 1062 | fc_lport_free_stats(lport); |
7f349142 | 1063 | |
3cab4468 VD |
1064 | /* |
1065 | * Release the Scsi_Host for vport but hold on to | |
1066 | * master lport until it fcoe interface fully cleaned-up. | |
1067 | */ | |
1068 | if (lport->vport) | |
1069 | scsi_host_put(lport->host); | |
7f349142 VD |
1070 | } |
1071 | ||
1875f27e RL |
1072 | /** |
1073 | * fcoe_ddp_setup() - Call a LLD's ddp_setup through the net device | |
1074 | * @lport: The local port to setup DDP for | |
1075 | * @xid: The exchange ID for this DDP transfer | |
1076 | * @sgl: The scatterlist describing this transfer | |
1077 | * @sgc: The number of sg items | |
7f349142 | 1078 | * |
1875f27e | 1079 | * Returns: 0 if the DDP context was not configured |
7f349142 | 1080 | */ |
1875f27e RL |
1081 | static int fcoe_ddp_setup(struct fc_lport *lport, u16 xid, |
1082 | struct scatterlist *sgl, unsigned int sgc) | |
7f349142 | 1083 | { |
1875f27e | 1084 | struct net_device *netdev = fcoe_netdev(lport); |
7f349142 | 1085 | |
1875f27e RL |
1086 | if (netdev->netdev_ops->ndo_fcoe_ddp_setup) |
1087 | return netdev->netdev_ops->ndo_fcoe_ddp_setup(netdev, | |
1088 | xid, sgl, | |
1089 | sgc); | |
7f349142 VD |
1090 | |
1091 | return 0; | |
1092 | } | |
1093 | ||
71f89491 YZ |
1094 | /** |
1095 | * fcoe_ddp_target() - Call a LLD's ddp_target through the net device | |
1096 | * @lport: The local port to setup DDP for | |
1097 | * @xid: The exchange ID for this DDP transfer | |
1098 | * @sgl: The scatterlist describing this transfer | |
1099 | * @sgc: The number of sg items | |
1100 | * | |
1101 | * Returns: 0 if the DDP context was not configured | |
1102 | */ | |
1103 | static int fcoe_ddp_target(struct fc_lport *lport, u16 xid, | |
1104 | struct scatterlist *sgl, unsigned int sgc) | |
1105 | { | |
1106 | struct net_device *netdev = fcoe_netdev(lport); | |
1107 | ||
1108 | if (netdev->netdev_ops->ndo_fcoe_ddp_target) | |
1109 | return netdev->netdev_ops->ndo_fcoe_ddp_target(netdev, xid, | |
1110 | sgl, sgc); | |
1111 | ||
1112 | return 0; | |
1113 | } | |
1114 | ||
1115 | ||
1875f27e RL |
1116 | /** |
1117 | * fcoe_ddp_done() - Call a LLD's ddp_done through the net device | |
1118 | * @lport: The local port to complete DDP on | |
1119 | * @xid: The exchange ID for this DDP transfer | |
7f349142 | 1120 | * |
1875f27e | 1121 | * Returns: the length of data that have been completed by DDP |
7f349142 | 1122 | */ |
1875f27e | 1123 | static int fcoe_ddp_done(struct fc_lport *lport, u16 xid) |
7f349142 | 1124 | { |
1875f27e | 1125 | struct net_device *netdev = fcoe_netdev(lport); |
7f349142 | 1126 | |
1875f27e RL |
1127 | if (netdev->netdev_ops->ndo_fcoe_ddp_done) |
1128 | return netdev->netdev_ops->ndo_fcoe_ddp_done(netdev, xid); | |
7f349142 VD |
1129 | return 0; |
1130 | } | |
1131 | ||
7f349142 | 1132 | /** |
1875f27e RL |
1133 | * fcoe_if_create() - Create a FCoE instance on an interface |
1134 | * @fcoe: The FCoE interface to create a local port on | |
1135 | * @parent: The device pointer to be the parent in sysfs for the SCSI host | |
1136 | * @npiv: Indicates if the port is a vport or not | |
7f349142 | 1137 | * |
1875f27e | 1138 | * Creates a fc_lport instance and a Scsi_Host instance and configure them. |
7f349142 | 1139 | * |
1875f27e | 1140 | * Returns: The allocated fc_lport or an error pointer |
7f349142 | 1141 | */ |
030f4e00 | 1142 | static struct fc_lport *fcoe_if_create(struct fcoe_interface *fcoe, |
9a05753b | 1143 | struct device *parent, int npiv) |
7f349142 | 1144 | { |
619fe4be | 1145 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
1875f27e | 1146 | struct net_device *netdev = fcoe->netdev; |
72fa396b | 1147 | struct fc_lport *lport, *n_port; |
014f5c3f | 1148 | struct fcoe_port *port; |
72fa396b | 1149 | struct Scsi_Host *shost; |
1875f27e | 1150 | int rc; |
9a05753b CL |
1151 | /* |
1152 | * parent is only a vport if npiv is 1, | |
1153 | * but we'll only use vport in that case so go ahead and set it | |
1154 | */ | |
1155 | struct fc_vport *vport = dev_to_vport(parent); | |
7f349142 | 1156 | |
d5488eb9 | 1157 | FCOE_NETDEV_DBG(netdev, "Create Interface\n"); |
7f349142 | 1158 | |
72fa396b VD |
1159 | if (!npiv) |
1160 | lport = libfc_host_alloc(&fcoe_shost_template, sizeof(*port)); | |
1161 | else | |
1162 | lport = libfc_vport_create(vport, sizeof(*port)); | |
1163 | ||
86221969 | 1164 | if (!lport) { |
d5488eb9 | 1165 | FCOE_NETDEV_DBG(netdev, "Could not allocate host structure\n"); |
af7f85d9 | 1166 | rc = -ENOMEM; |
030f4e00 | 1167 | goto out; |
7f349142 | 1168 | } |
014f5c3f | 1169 | port = lport_priv(lport); |
2e70e241 | 1170 | port->lport = lport; |
8597ae8b | 1171 | port->priv = fcoe; |
66524ec9 | 1172 | port->get_netdev = fcoe_netdev; |
8597ae8b BPG |
1173 | port->max_queue_depth = FCOE_MAX_QUEUE_DEPTH; |
1174 | port->min_queue_depth = FCOE_MIN_QUEUE_DEPTH; | |
2e70e241 | 1175 | INIT_WORK(&port->destroy_work, fcoe_destroy_work); |
7f349142 | 1176 | |
f9184df3 NH |
1177 | /* |
1178 | * Need to add the lport to the hostlist | |
1179 | * so we catch NETDEV_CHANGE events. | |
1180 | */ | |
1181 | fcoe_hostlist_add(lport); | |
1182 | ||
1875f27e | 1183 | /* configure a fc_lport including the exchange manager */ |
af7f85d9 | 1184 | rc = fcoe_lport_config(lport); |
7f349142 | 1185 | if (rc) { |
d5488eb9 RL |
1186 | FCOE_NETDEV_DBG(netdev, "Could not configure lport for the " |
1187 | "interface\n"); | |
7f349142 VD |
1188 | goto out_host_put; |
1189 | } | |
1190 | ||
9a05753b | 1191 | if (npiv) { |
9f8f3aa6 CL |
1192 | FCOE_NETDEV_DBG(netdev, "Setting vport names, " |
1193 | "%16.16llx %16.16llx\n", | |
1875f27e | 1194 | vport->node_name, vport->port_name); |
9a05753b CL |
1195 | fc_set_wwnn(lport, vport->node_name); |
1196 | fc_set_wwpn(lport, vport->port_name); | |
1197 | } | |
1198 | ||
ab6b85c1 | 1199 | /* configure lport network properties */ |
af7f85d9 | 1200 | rc = fcoe_netdev_config(lport, netdev); |
ab6b85c1 | 1201 | if (rc) { |
d5488eb9 RL |
1202 | FCOE_NETDEV_DBG(netdev, "Could not configure netdev for the " |
1203 | "interface\n"); | |
54b649f8 | 1204 | goto out_lp_destroy; |
ab6b85c1 | 1205 | } |
97c8389d | 1206 | |
7f349142 | 1207 | /* configure lport scsi host properties */ |
8ba00a4b | 1208 | rc = fcoe_shost_config(lport, parent); |
7f349142 | 1209 | if (rc) { |
d5488eb9 RL |
1210 | FCOE_NETDEV_DBG(netdev, "Could not configure shost for the " |
1211 | "interface\n"); | |
54b649f8 | 1212 | goto out_lp_destroy; |
7f349142 VD |
1213 | } |
1214 | ||
96316099 | 1215 | /* Initialize the library */ |
619fe4be | 1216 | rc = fcoe_libfc_config(lport, ctlr, &fcoe_libfc_fcn_templ, 1); |
7f349142 | 1217 | if (rc) { |
96316099 | 1218 | FCOE_NETDEV_DBG(netdev, "Could not configure libfc for the " |
d5488eb9 | 1219 | "interface\n"); |
96316099 | 1220 | goto out_lp_destroy; |
7f349142 VD |
1221 | } |
1222 | ||
6fef3902 NP |
1223 | /* Initialized FDMI information */ |
1224 | fcoe_fdmi_info(lport, netdev); | |
1225 | ||
72fa396b VD |
1226 | /* |
1227 | * fcoe_em_alloc() and fcoe_hostlist_add() both | |
1228 | * need to be atomic with respect to other changes to the | |
1229 | * hostlist since fcoe_em_alloc() looks for an existing EM | |
1230 | * instance on host list updated by fcoe_hostlist_add(). | |
1231 | * | |
1232 | * This is currently handled through the fcoe_config_mutex | |
1233 | * begin held. | |
1234 | */ | |
1235 | if (!npiv) | |
9a05753b CL |
1236 | /* lport exch manager allocation */ |
1237 | rc = fcoe_em_config(lport); | |
72fa396b VD |
1238 | else { |
1239 | shost = vport_to_shost(vport); | |
1240 | n_port = shost_priv(shost); | |
1241 | rc = fc_exch_mgr_list_clone(n_port, lport); | |
1242 | } | |
1243 | ||
1244 | if (rc) { | |
1245 | FCOE_NETDEV_DBG(netdev, "Could not configure the EM\n"); | |
1246 | goto out_lp_destroy; | |
7f349142 VD |
1247 | } |
1248 | ||
af7f85d9 | 1249 | return lport; |
7f349142 VD |
1250 | |
1251 | out_lp_destroy: | |
af7f85d9 | 1252 | fc_exch_mgr_free(lport); |
7f349142 | 1253 | out_host_put: |
f9184df3 | 1254 | fcoe_hostlist_del(lport); |
af7f85d9 CL |
1255 | scsi_host_put(lport->host); |
1256 | out: | |
1257 | return ERR_PTR(rc); | |
7f349142 VD |
1258 | } |
1259 | ||
1260 | /** | |
1875f27e | 1261 | * fcoe_if_init() - Initialization routine for fcoe.ko |
7f349142 | 1262 | * |
1875f27e RL |
1263 | * Attaches the SW FCoE transport to the FC transport |
1264 | * | |
1265 | * Returns: 0 on success | |
7f349142 VD |
1266 | */ |
1267 | static int __init fcoe_if_init(void) | |
1268 | { | |
1269 | /* attach to scsi transport */ | |
8ca86f84 YZ |
1270 | fcoe_nport_scsi_transport = |
1271 | fc_attach_transport(&fcoe_nport_fc_functions); | |
1272 | fcoe_vport_scsi_transport = | |
1273 | fc_attach_transport(&fcoe_vport_fc_functions); | |
7f349142 | 1274 | |
8ca86f84 | 1275 | if (!fcoe_nport_scsi_transport) { |
d5488eb9 | 1276 | printk(KERN_ERR "fcoe: Failed to attach to the FC transport\n"); |
7f349142 VD |
1277 | return -ENODEV; |
1278 | } | |
1279 | ||
1280 | return 0; | |
1281 | } | |
1282 | ||
1283 | /** | |
1875f27e RL |
1284 | * fcoe_if_exit() - Tear down fcoe.ko |
1285 | * | |
1286 | * Detaches the SW FCoE transport from the FC transport | |
7f349142 | 1287 | * |
1875f27e | 1288 | * Returns: 0 on success |
7f349142 | 1289 | */ |
7c9c6841 | 1290 | static int __exit fcoe_if_exit(void) |
7f349142 | 1291 | { |
8ca86f84 YZ |
1292 | fc_release_transport(fcoe_nport_scsi_transport); |
1293 | fc_release_transport(fcoe_vport_scsi_transport); | |
1294 | fcoe_nport_scsi_transport = NULL; | |
1295 | fcoe_vport_scsi_transport = NULL; | |
7f349142 VD |
1296 | return 0; |
1297 | } | |
1298 | ||
4b9bc86d | 1299 | static void fcoe_thread_cleanup_local(unsigned int cpu) |
8976f424 | 1300 | { |
8976f424 | 1301 | struct page *crc_eof; |
4b9bc86d | 1302 | struct fcoe_percpu_s *p; |
8976f424 | 1303 | |
4b9bc86d | 1304 | p = per_cpu_ptr(&fcoe_percpu, cpu); |
8976f424 | 1305 | spin_lock_bh(&p->fcoe_rx_list.lock); |
8976f424 RL |
1306 | crc_eof = p->crc_eof_page; |
1307 | p->crc_eof_page = NULL; | |
1308 | p->crc_eof_offset = 0; | |
1309 | spin_unlock_bh(&p->fcoe_rx_list.lock); | |
1310 | ||
8976f424 RL |
1311 | if (crc_eof) |
1312 | put_page(crc_eof); | |
4b9bc86d | 1313 | flush_work(&p->work); |
8976f424 RL |
1314 | } |
1315 | ||
064287ee KP |
1316 | /** |
1317 | * fcoe_select_cpu() - Selects CPU to handle post-processing of incoming | |
1318 | * command. | |
064287ee | 1319 | * |
d272281c VD |
1320 | * This routine selects next CPU based on cpumask to distribute |
1321 | * incoming requests in round robin. | |
064287ee | 1322 | * |
d272281c | 1323 | * Returns: int CPU number |
064287ee | 1324 | */ |
d272281c | 1325 | static inline unsigned int fcoe_select_cpu(void) |
064287ee KP |
1326 | { |
1327 | static unsigned int selected_cpu; | |
1328 | ||
d272281c VD |
1329 | selected_cpu = cpumask_next(selected_cpu, cpu_online_mask); |
1330 | if (selected_cpu >= nr_cpu_ids) | |
1331 | selected_cpu = cpumask_first(cpu_online_mask); | |
1332 | ||
064287ee KP |
1333 | return selected_cpu; |
1334 | } | |
1335 | ||
85b4aa49 | 1336 | /** |
1875f27e RL |
1337 | * fcoe_rcv() - Receive packets from a net device |
1338 | * @skb: The received packet | |
1339 | * @netdev: The net device that the packet was received on | |
1340 | * @ptype: The packet type context | |
1341 | * @olddev: The last device net device | |
85b4aa49 | 1342 | * |
1875f27e RL |
1343 | * This routine is called by NET_RX_SOFTIRQ. It receives a packet, builds a |
1344 | * FC frame and passes the frame to libfc. | |
85b4aa49 RL |
1345 | * |
1346 | * Returns: 0 for success | |
34f42a07 | 1347 | */ |
7c9c6841 | 1348 | static int fcoe_rcv(struct sk_buff *skb, struct net_device *netdev, |
85b4aa49 RL |
1349 | struct packet_type *ptype, struct net_device *olddev) |
1350 | { | |
1875f27e | 1351 | struct fc_lport *lport; |
85b4aa49 | 1352 | struct fcoe_rcv_info *fr; |
619fe4be | 1353 | struct fcoe_ctlr *ctlr; |
259ad85d | 1354 | struct fcoe_interface *fcoe; |
85b4aa49 | 1355 | struct fc_frame_header *fh; |
85b4aa49 | 1356 | struct fcoe_percpu_s *fps; |
519e5135 | 1357 | struct ethhdr *eh; |
b2f0091f | 1358 | unsigned int cpu; |
85b4aa49 | 1359 | |
259ad85d | 1360 | fcoe = container_of(ptype, struct fcoe_interface, fcoe_packet_type); |
619fe4be RL |
1361 | ctlr = fcoe_to_ctlr(fcoe); |
1362 | lport = ctlr->lp; | |
1875f27e | 1363 | if (unlikely(!lport)) { |
465b87bf | 1364 | FCOE_NETDEV_DBG(netdev, "Cannot find hba structure\n"); |
85b4aa49 RL |
1365 | goto err2; |
1366 | } | |
1875f27e | 1367 | if (!lport->link_up) |
97c8389d | 1368 | goto err2; |
85b4aa49 | 1369 | |
465b87bf BVA |
1370 | FCOE_NETDEV_DBG(netdev, |
1371 | "skb_info: len:%d data_len:%d head:%p data:%p tail:%p end:%p sum:%d dev:%s\n", | |
d5488eb9 RL |
1372 | skb->len, skb->data_len, skb->head, skb->data, |
1373 | skb_tail_pointer(skb), skb_end_pointer(skb), | |
1374 | skb->csum, skb->dev ? skb->dev->name : "<NULL>"); | |
85b4aa49 | 1375 | |
8b612434 NH |
1376 | |
1377 | skb = skb_share_check(skb, GFP_ATOMIC); | |
1378 | ||
1379 | if (skb == NULL) | |
1380 | return NET_RX_DROP; | |
1381 | ||
519e5135 | 1382 | eh = eth_hdr(skb); |
519e5135 | 1383 | |
619fe4be | 1384 | if (is_fip_mode(ctlr) && |
6942df7f | 1385 | !ether_addr_equal(eh->h_source, ctlr->dest_addr)) { |
519e5135 VD |
1386 | FCOE_NETDEV_DBG(netdev, "wrong source mac address:%pM\n", |
1387 | eh->h_source); | |
85b4aa49 RL |
1388 | goto err; |
1389 | } | |
1390 | ||
1391 | /* | |
1392 | * Check for minimum frame length, and make sure required FCoE | |
1393 | * and FC headers are pulled into the linear data area. | |
1394 | */ | |
1395 | if (unlikely((skb->len < FCOE_MIN_FRAME) || | |
1875f27e | 1396 | !pskb_may_pull(skb, FCOE_HEADER_LEN))) |
85b4aa49 RL |
1397 | goto err; |
1398 | ||
1399 | skb_set_transport_header(skb, sizeof(struct fcoe_hdr)); | |
1400 | fh = (struct fc_frame_header *) skb_transport_header(skb); | |
1401 | ||
0ee31cb5 RL |
1402 | if (ntoh24(&eh->h_dest[3]) != ntoh24(fh->fh_d_id)) { |
1403 | FCOE_NETDEV_DBG(netdev, "FC frame d_id mismatch with MAC:%pM\n", | |
1404 | eh->h_dest); | |
1405 | goto err; | |
1406 | } | |
1407 | ||
85b4aa49 | 1408 | fr = fcoe_dev_from_skb(skb); |
1875f27e | 1409 | fr->fr_dev = lport; |
5e5e92df | 1410 | |
85b4aa49 | 1411 | /* |
b2f0091f VD |
1412 | * In case the incoming frame's exchange is originated from |
1413 | * the initiator, then received frame's exchange id is ANDed | |
1414 | * with fc_cpu_mask bits to get the same cpu on which exchange | |
d272281c VD |
1415 | * was originated, otherwise select cpu using rx exchange id |
1416 | * or fcoe_select_cpu(). | |
85b4aa49 | 1417 | */ |
b2f0091f VD |
1418 | if (ntoh24(fh->fh_f_ctl) & FC_FC_EX_CTX) |
1419 | cpu = ntohs(fh->fh_ox_id) & fc_cpu_mask; | |
064287ee | 1420 | else { |
d272281c VD |
1421 | if (ntohs(fh->fh_rx_id) == FC_XID_UNKNOWN) |
1422 | cpu = fcoe_select_cpu(); | |
1423 | else | |
29bdd2bb | 1424 | cpu = ntohs(fh->fh_rx_id) & fc_cpu_mask; |
064287ee | 1425 | } |
324f6678 VD |
1426 | |
1427 | if (cpu >= nr_cpu_ids) | |
1428 | goto err; | |
1429 | ||
8976f424 | 1430 | fps = &per_cpu(fcoe_percpu, cpu); |
94aa29f2 | 1431 | spin_lock(&fps->fcoe_rx_list.lock); |
8976f424 RL |
1432 | /* |
1433 | * We now have a valid CPU that we're targeting for | |
1434 | * this skb. We also have this receive thread locked, | |
1435 | * so we're free to queue skbs into it's queue. | |
1436 | */ | |
85b4aa49 | 1437 | |
5e70c4c4 NH |
1438 | /* |
1439 | * Note: We used to have a set of conditions under which we would | |
1440 | * call fcoe_recv_frame directly, rather than queuing to the rx list | |
1441 | * as it could save a few cycles, but doing so is prohibited, as | |
1442 | * fcoe_recv_frame has several paths that may sleep, which is forbidden | |
1443 | * in softirq context. | |
859b7b64 | 1444 | */ |
5e70c4c4 | 1445 | __skb_queue_tail(&fps->fcoe_rx_list, skb); |
4b9bc86d | 1446 | schedule_work_on(cpu, &fps->work); |
94aa29f2 | 1447 | spin_unlock(&fps->fcoe_rx_list.lock); |
85b4aa49 | 1448 | |
34bac2ef | 1449 | return NET_RX_SUCCESS; |
85b4aa49 | 1450 | err: |
1bd49b48 | 1451 | per_cpu_ptr(lport->stats, get_cpu())->ErrorFrames++; |
f018b73a | 1452 | put_cpu(); |
85b4aa49 RL |
1453 | err2: |
1454 | kfree_skb(skb); | |
34bac2ef | 1455 | return NET_RX_DROP; |
85b4aa49 | 1456 | } |
85b4aa49 RL |
1457 | |
1458 | /** | |
8597ae8b | 1459 | * fcoe_alloc_paged_crc_eof() - Allocate a page to be used for the trailer CRC |
1875f27e RL |
1460 | * @skb: The packet to be transmitted |
1461 | * @tlen: The total length of the trailer | |
1462 | * | |
85b4aa49 | 1463 | * Returns: 0 for success |
34f42a07 | 1464 | */ |
8597ae8b | 1465 | static int fcoe_alloc_paged_crc_eof(struct sk_buff *skb, int tlen) |
85b4aa49 RL |
1466 | { |
1467 | struct fcoe_percpu_s *fps; | |
8597ae8b | 1468 | int rc; |
85b4aa49 | 1469 | |
5e5e92df | 1470 | fps = &get_cpu_var(fcoe_percpu); |
8597ae8b | 1471 | rc = fcoe_get_paged_crc_eof(skb, tlen, fps); |
5e5e92df | 1472 | put_cpu_var(fcoe_percpu); |
85b4aa49 | 1473 | |
8597ae8b | 1474 | return rc; |
85b4aa49 | 1475 | } |
85b4aa49 RL |
1476 | |
1477 | /** | |
1875f27e RL |
1478 | * fcoe_xmit() - Transmit a FCoE frame |
1479 | * @lport: The local port that the frame is to be transmitted for | |
1480 | * @fp: The frame to be transmitted | |
85b4aa49 | 1481 | * |
1875f27e | 1482 | * Return: 0 for success |
34f42a07 | 1483 | */ |
7c9c6841 | 1484 | static int fcoe_xmit(struct fc_lport *lport, struct fc_frame *fp) |
85b4aa49 | 1485 | { |
4bb6b515 | 1486 | int wlen; |
85b4aa49 RL |
1487 | u32 crc; |
1488 | struct ethhdr *eh; | |
1489 | struct fcoe_crc_eof *cp; | |
1490 | struct sk_buff *skb; | |
1bd49b48 | 1491 | struct fc_stats *stats; |
85b4aa49 RL |
1492 | struct fc_frame_header *fh; |
1493 | unsigned int hlen; /* header length implies the version */ | |
1494 | unsigned int tlen; /* trailer length */ | |
1495 | unsigned int elen; /* eth header, may include vlan */ | |
1875f27e | 1496 | struct fcoe_port *port = lport_priv(lport); |
8597ae8b | 1497 | struct fcoe_interface *fcoe = port->priv; |
619fe4be | 1498 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
85b4aa49 RL |
1499 | u8 sof, eof; |
1500 | struct fcoe_hdr *hp; | |
1501 | ||
1502 | WARN_ON((fr_len(fp) % sizeof(u32)) != 0); | |
1503 | ||
85b4aa49 | 1504 | fh = fc_frame_header_get(fp); |
97c8389d JE |
1505 | skb = fp_skb(fp); |
1506 | wlen = skb->len / FCOE_WORD_TO_BYTE; | |
1507 | ||
1875f27e | 1508 | if (!lport->link_up) { |
3caf02ee | 1509 | kfree_skb(skb); |
97c8389d | 1510 | return 0; |
85b4aa49 RL |
1511 | } |
1512 | ||
9860eeb4 | 1513 | if (unlikely(fh->fh_type == FC_TYPE_ELS) && |
619fe4be | 1514 | fcoe_ctlr_els_send(ctlr, lport, skb)) |
97c8389d JE |
1515 | return 0; |
1516 | ||
85b4aa49 RL |
1517 | sof = fr_sof(fp); |
1518 | eof = fr_eof(fp); | |
1519 | ||
4e57e1cb | 1520 | elen = sizeof(struct ethhdr); |
85b4aa49 RL |
1521 | hlen = sizeof(struct fcoe_hdr); |
1522 | tlen = sizeof(struct fcoe_crc_eof); | |
1523 | wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; | |
1524 | ||
1525 | /* crc offload */ | |
1875f27e | 1526 | if (likely(lport->crc_offload)) { |
253aab05 | 1527 | skb->ip_summed = CHECKSUM_PARTIAL; |
85b4aa49 RL |
1528 | skb->csum_start = skb_headroom(skb); |
1529 | skb->csum_offset = skb->len; | |
1530 | crc = 0; | |
1531 | } else { | |
1532 | skb->ip_summed = CHECKSUM_NONE; | |
1533 | crc = fcoe_fc_crc(fp); | |
1534 | } | |
1535 | ||
014f5c3f | 1536 | /* copy port crc and eof to the skb buff */ |
85b4aa49 RL |
1537 | if (skb_is_nonlinear(skb)) { |
1538 | skb_frag_t *frag; | |
8597ae8b | 1539 | if (fcoe_alloc_paged_crc_eof(skb, tlen)) { |
e9041581 | 1540 | kfree_skb(skb); |
85b4aa49 RL |
1541 | return -ENOMEM; |
1542 | } | |
1543 | frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; | |
77dfce07 | 1544 | cp = kmap_atomic(skb_frag_page(frag)) |
85b4aa49 RL |
1545 | + frag->page_offset; |
1546 | } else { | |
1547 | cp = (struct fcoe_crc_eof *)skb_put(skb, tlen); | |
1548 | } | |
1549 | ||
1550 | memset(cp, 0, sizeof(*cp)); | |
1551 | cp->fcoe_eof = eof; | |
1552 | cp->fcoe_crc32 = cpu_to_le32(~crc); | |
1553 | ||
1554 | if (skb_is_nonlinear(skb)) { | |
77dfce07 | 1555 | kunmap_atomic(cp); |
85b4aa49 RL |
1556 | cp = NULL; |
1557 | } | |
1558 | ||
014f5c3f | 1559 | /* adjust skb network/transport offsets to match mac/fcoe/port */ |
85b4aa49 RL |
1560 | skb_push(skb, elen + hlen); |
1561 | skb_reset_mac_header(skb); | |
1562 | skb_reset_network_header(skb); | |
1563 | skb->mac_len = elen; | |
211c738d | 1564 | skb->protocol = htons(ETH_P_FCOE); |
31c37a6f | 1565 | skb->priority = fcoe->priority; |
6f6c2aa3 | 1566 | |
d1483bb9 | 1567 | if (fcoe->netdev->priv_flags & IFF_802_1Q_VLAN && |
f646968f | 1568 | fcoe->realdev->features & NETIF_F_HW_VLAN_CTAG_TX) { |
2884d423 | 1569 | /* must set skb->dev before calling vlan_put_tag */ |
d1483bb9 | 1570 | skb->dev = fcoe->realdev; |
b960a0ac JP |
1571 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), |
1572 | vlan_dev_vlan_id(fcoe->netdev)); | |
d1483bb9 VD |
1573 | } else |
1574 | skb->dev = fcoe->netdev; | |
85b4aa49 RL |
1575 | |
1576 | /* fill up mac and fcoe headers */ | |
1577 | eh = eth_hdr(skb); | |
1578 | eh->h_proto = htons(ETH_P_FCOE); | |
619fe4be RL |
1579 | memcpy(eh->h_dest, ctlr->dest_addr, ETH_ALEN); |
1580 | if (ctlr->map_dest) | |
cd229e42 | 1581 | memcpy(eh->h_dest + 3, fh->fh_d_id, 3); |
85b4aa49 | 1582 | |
619fe4be RL |
1583 | if (unlikely(ctlr->flogi_oxid != FC_XID_UNKNOWN)) |
1584 | memcpy(eh->h_source, ctlr->ctl_src_addr, ETH_ALEN); | |
85b4aa49 | 1585 | else |
11b56188 | 1586 | memcpy(eh->h_source, port->data_src_addr, ETH_ALEN); |
85b4aa49 RL |
1587 | |
1588 | hp = (struct fcoe_hdr *)(eh + 1); | |
1589 | memset(hp, 0, sizeof(*hp)); | |
1590 | if (FC_FCOE_VER) | |
1591 | FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); | |
1592 | hp->fcoe_sof = sof; | |
1593 | ||
39ca9a06 | 1594 | /* fcoe lso, mss is in max_payload which is non-zero for FCP data */ |
1875f27e | 1595 | if (lport->seq_offload && fr_max_payload(fp)) { |
39ca9a06 YZ |
1596 | skb_shinfo(skb)->gso_type = SKB_GSO_FCOE; |
1597 | skb_shinfo(skb)->gso_size = fr_max_payload(fp); | |
1598 | } else { | |
1599 | skb_shinfo(skb)->gso_type = 0; | |
1600 | skb_shinfo(skb)->gso_size = 0; | |
1601 | } | |
85b4aa49 | 1602 | /* update tx stats: regardless if LLD fails */ |
1bd49b48 | 1603 | stats = per_cpu_ptr(lport->stats, get_cpu()); |
582b45bc RL |
1604 | stats->TxFrames++; |
1605 | stats->TxWords += wlen; | |
f018b73a | 1606 | put_cpu(); |
85b4aa49 RL |
1607 | |
1608 | /* send down to lld */ | |
1875f27e | 1609 | fr_dev(fp) = lport; |
980f5156 | 1610 | fcoe_port_send(port, skb); |
85b4aa49 RL |
1611 | return 0; |
1612 | } | |
85b4aa49 | 1613 | |
52ee8321 VD |
1614 | /** |
1615 | * fcoe_filter_frames() - filter out bad fcoe frames, i.e. bad CRC | |
1616 | * @lport: The local port the frame was received on | |
1617 | * @fp: The received frame | |
1618 | * | |
1619 | * Return: 0 on passing filtering checks | |
1620 | */ | |
1621 | static inline int fcoe_filter_frames(struct fc_lport *lport, | |
1622 | struct fc_frame *fp) | |
1623 | { | |
619fe4be | 1624 | struct fcoe_ctlr *ctlr; |
52ee8321 VD |
1625 | struct fcoe_interface *fcoe; |
1626 | struct fc_frame_header *fh; | |
1627 | struct sk_buff *skb = (struct sk_buff *)fp; | |
1bd49b48 | 1628 | struct fc_stats *stats; |
52ee8321 VD |
1629 | |
1630 | /* | |
1631 | * We only check CRC if no offload is available and if it is | |
1632 | * it's solicited data, in which case, the FCP layer would | |
1633 | * check it during the copy. | |
1634 | */ | |
1635 | if (lport->crc_offload && skb->ip_summed == CHECKSUM_UNNECESSARY) | |
1636 | fr_flags(fp) &= ~FCPHF_CRC_UNCHECKED; | |
1637 | else | |
1638 | fr_flags(fp) |= FCPHF_CRC_UNCHECKED; | |
1639 | ||
1640 | fh = (struct fc_frame_header *) skb_transport_header(skb); | |
1641 | fh = fc_frame_header_get(fp); | |
1642 | if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && fh->fh_type == FC_TYPE_FCP) | |
1643 | return 0; | |
1644 | ||
8597ae8b | 1645 | fcoe = ((struct fcoe_port *)lport_priv(lport))->priv; |
619fe4be RL |
1646 | ctlr = fcoe_to_ctlr(fcoe); |
1647 | if (is_fip_mode(ctlr) && fc_frame_payload_op(fp) == ELS_LOGO && | |
52ee8321 VD |
1648 | ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { |
1649 | FCOE_DBG("fcoe: dropping FCoE lport LOGO in fip mode\n"); | |
1650 | return -EINVAL; | |
1651 | } | |
1652 | ||
f2f96d20 | 1653 | if (!(fr_flags(fp) & FCPHF_CRC_UNCHECKED) || |
52ee8321 VD |
1654 | le32_to_cpu(fr_crc(fp)) == ~crc32(~0, skb->data, skb->len)) { |
1655 | fr_flags(fp) &= ~FCPHF_CRC_UNCHECKED; | |
1656 | return 0; | |
1657 | } | |
1658 | ||
1bd49b48 | 1659 | stats = per_cpu_ptr(lport->stats, get_cpu()); |
52ee8321 VD |
1660 | stats->InvalidCRCCount++; |
1661 | if (stats->InvalidCRCCount < 5) | |
1662 | printk(KERN_WARNING "fcoe: dropping frame with CRC error\n"); | |
7e1e7ead | 1663 | put_cpu(); |
52ee8321 VD |
1664 | return -EINVAL; |
1665 | } | |
1666 | ||
34f42a07 | 1667 | /** |
859b7b64 CL |
1668 | * fcoe_recv_frame() - process a single received frame |
1669 | * @skb: frame to process | |
85b4aa49 | 1670 | */ |
859b7b64 | 1671 | static void fcoe_recv_frame(struct sk_buff *skb) |
85b4aa49 | 1672 | { |
85b4aa49 | 1673 | u32 fr_len; |
1875f27e | 1674 | struct fc_lport *lport; |
85b4aa49 | 1675 | struct fcoe_rcv_info *fr; |
1bd49b48 | 1676 | struct fc_stats *stats; |
85b4aa49 RL |
1677 | struct fcoe_crc_eof crc_eof; |
1678 | struct fc_frame *fp; | |
014f5c3f | 1679 | struct fcoe_port *port; |
85b4aa49 RL |
1680 | struct fcoe_hdr *hp; |
1681 | ||
859b7b64 CL |
1682 | fr = fcoe_dev_from_skb(skb); |
1683 | lport = fr->fr_dev; | |
1684 | if (unlikely(!lport)) { | |
4b9bc86d | 1685 | FCOE_NETDEV_DBG(skb->dev, "NULL lport in skb\n"); |
859b7b64 CL |
1686 | kfree_skb(skb); |
1687 | return; | |
1688 | } | |
1689 | ||
465b87bf BVA |
1690 | FCOE_NETDEV_DBG(skb->dev, |
1691 | "skb_info: len:%d data_len:%d head:%p data:%p tail:%p end:%p sum:%d dev:%s\n", | |
859b7b64 CL |
1692 | skb->len, skb->data_len, |
1693 | skb->head, skb->data, skb_tail_pointer(skb), | |
1694 | skb_end_pointer(skb), skb->csum, | |
1695 | skb->dev ? skb->dev->name : "<NULL>"); | |
1696 | ||
859b7b64 | 1697 | port = lport_priv(lport); |
f1633011 | 1698 | skb_linearize(skb); /* check for skb_is_nonlinear is within skb_linearize */ |
859b7b64 CL |
1699 | |
1700 | /* | |
1701 | * Frame length checks and setting up the header pointers | |
1702 | * was done in fcoe_rcv already. | |
1703 | */ | |
1704 | hp = (struct fcoe_hdr *) skb_network_header(skb); | |
859b7b64 | 1705 | |
1bd49b48 | 1706 | stats = per_cpu_ptr(lport->stats, get_cpu()); |
859b7b64 CL |
1707 | if (unlikely(FC_FCOE_DECAPS_VER(hp) != FC_FCOE_VER)) { |
1708 | if (stats->ErrorFrames < 5) | |
1709 | printk(KERN_WARNING "fcoe: FCoE version " | |
1710 | "mismatch: The frame has " | |
1711 | "version %x, but the " | |
1712 | "initiator supports version " | |
1713 | "%x\n", FC_FCOE_DECAPS_VER(hp), | |
1714 | FC_FCOE_VER); | |
f018b73a | 1715 | goto drop; |
859b7b64 CL |
1716 | } |
1717 | ||
1718 | skb_pull(skb, sizeof(struct fcoe_hdr)); | |
1719 | fr_len = skb->len - sizeof(struct fcoe_crc_eof); | |
1720 | ||
1721 | stats->RxFrames++; | |
1722 | stats->RxWords += fr_len / FCOE_WORD_TO_BYTE; | |
1723 | ||
1724 | fp = (struct fc_frame *)skb; | |
1725 | fc_frame_init(fp); | |
1726 | fr_dev(fp) = lport; | |
1727 | fr_sof(fp) = hp->fcoe_sof; | |
1728 | ||
1729 | /* Copy out the CRC and EOF trailer for access */ | |
f018b73a JE |
1730 | if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) |
1731 | goto drop; | |
859b7b64 CL |
1732 | fr_eof(fp) = crc_eof.fcoe_eof; |
1733 | fr_crc(fp) = crc_eof.fcoe_crc32; | |
f018b73a JE |
1734 | if (pskb_trim(skb, fr_len)) |
1735 | goto drop; | |
859b7b64 | 1736 | |
52ee8321 VD |
1737 | if (!fcoe_filter_frames(lport, fp)) { |
1738 | put_cpu(); | |
1739 | fc_exch_recv(lport, fp); | |
1740 | return; | |
859b7b64 | 1741 | } |
f018b73a JE |
1742 | drop: |
1743 | stats->ErrorFrames++; | |
1744 | put_cpu(); | |
1745 | kfree_skb(skb); | |
859b7b64 CL |
1746 | } |
1747 | ||
1748 | /** | |
4b9bc86d SAS |
1749 | * fcoe_receive_work() - The per-CPU worker |
1750 | * @work: The work struct | |
859b7b64 | 1751 | * |
859b7b64 | 1752 | */ |
4b9bc86d | 1753 | static void fcoe_receive_work(struct work_struct *work) |
859b7b64 | 1754 | { |
4b9bc86d | 1755 | struct fcoe_percpu_s *p; |
859b7b64 | 1756 | struct sk_buff *skb; |
20dc3811 NH |
1757 | struct sk_buff_head tmp; |
1758 | ||
4b9bc86d | 1759 | p = container_of(work, struct fcoe_percpu_s, work); |
20dc3811 | 1760 | skb_queue_head_init(&tmp); |
859b7b64 | 1761 | |
4b9bc86d SAS |
1762 | spin_lock_bh(&p->fcoe_rx_list.lock); |
1763 | skb_queue_splice_init(&p->fcoe_rx_list, &tmp); | |
1764 | spin_unlock_bh(&p->fcoe_rx_list.lock); | |
95fdd5e9 | 1765 | |
4b9bc86d SAS |
1766 | if (!skb_queue_len(&tmp)) |
1767 | return; | |
95fdd5e9 | 1768 | |
4b9bc86d SAS |
1769 | while ((skb = __skb_dequeue(&tmp))) |
1770 | fcoe_recv_frame(skb); | |
85b4aa49 RL |
1771 | } |
1772 | ||
85b4aa49 | 1773 | /** |
1875f27e | 1774 | * fcoe_dev_setup() - Setup the link change notification interface |
34f42a07 | 1775 | */ |
b0d428ad | 1776 | static void fcoe_dev_setup(void) |
85b4aa49 | 1777 | { |
6f6c2aa3 | 1778 | register_dcbevent_notifier(&dcb_notifier); |
85b4aa49 RL |
1779 | register_netdevice_notifier(&fcoe_notifier); |
1780 | } | |
1781 | ||
1782 | /** | |
1875f27e | 1783 | * fcoe_dev_cleanup() - Cleanup the link change notification interface |
34f42a07 | 1784 | */ |
85b4aa49 RL |
1785 | static void fcoe_dev_cleanup(void) |
1786 | { | |
6f6c2aa3 | 1787 | unregister_dcbevent_notifier(&dcb_notifier); |
85b4aa49 RL |
1788 | unregister_netdevice_notifier(&fcoe_notifier); |
1789 | } | |
1790 | ||
6f6c2aa3 | 1791 | static struct fcoe_interface * |
1792 | fcoe_hostlist_lookup_realdev_port(struct net_device *netdev) | |
1793 | { | |
1794 | struct fcoe_interface *fcoe; | |
1795 | struct net_device *real_dev; | |
1796 | ||
1797 | list_for_each_entry(fcoe, &fcoe_hostlist, list) { | |
1798 | if (fcoe->netdev->priv_flags & IFF_802_1Q_VLAN) | |
1799 | real_dev = vlan_dev_real_dev(fcoe->netdev); | |
1800 | else | |
1801 | real_dev = fcoe->netdev; | |
1802 | ||
1803 | if (netdev == real_dev) | |
1804 | return fcoe; | |
1805 | } | |
1806 | return NULL; | |
1807 | } | |
1808 | ||
1809 | static int fcoe_dcb_app_notification(struct notifier_block *notifier, | |
1810 | ulong event, void *ptr) | |
1811 | { | |
1812 | struct dcb_app_type *entry = ptr; | |
619fe4be | 1813 | struct fcoe_ctlr *ctlr; |
6f6c2aa3 | 1814 | struct fcoe_interface *fcoe; |
1815 | struct net_device *netdev; | |
6f6c2aa3 | 1816 | int prio; |
1817 | ||
1818 | if (entry->app.selector != DCB_APP_IDTYPE_ETHTYPE) | |
1819 | return NOTIFY_OK; | |
1820 | ||
1821 | netdev = dev_get_by_index(&init_net, entry->ifindex); | |
1822 | if (!netdev) | |
1823 | return NOTIFY_OK; | |
1824 | ||
1825 | fcoe = fcoe_hostlist_lookup_realdev_port(netdev); | |
1826 | dev_put(netdev); | |
1827 | if (!fcoe) | |
1828 | return NOTIFY_OK; | |
1829 | ||
619fe4be RL |
1830 | ctlr = fcoe_to_ctlr(fcoe); |
1831 | ||
6f6c2aa3 | 1832 | if (entry->dcbx & DCB_CAP_DCBX_VER_CEE) |
1833 | prio = ffs(entry->app.priority) - 1; | |
1834 | else | |
1835 | prio = entry->app.priority; | |
1836 | ||
1837 | if (prio < 0) | |
1838 | return NOTIFY_OK; | |
1839 | ||
1840 | if (entry->app.protocol == ETH_P_FIP || | |
1841 | entry->app.protocol == ETH_P_FCOE) | |
619fe4be | 1842 | ctlr->priority = prio; |
6f6c2aa3 | 1843 | |
31c37a6f NP |
1844 | if (entry->app.protocol == ETH_P_FCOE) |
1845 | fcoe->priority = prio; | |
6f6c2aa3 | 1846 | |
1847 | return NOTIFY_OK; | |
1848 | } | |
1849 | ||
85b4aa49 | 1850 | /** |
1875f27e RL |
1851 | * fcoe_device_notification() - Handler for net device events |
1852 | * @notifier: The context of the notification | |
1853 | * @event: The type of event | |
1854 | * @ptr: The net device that the event was on | |
85b4aa49 | 1855 | * |
1875f27e | 1856 | * This function is called by the Ethernet driver in case of link change event. |
85b4aa49 RL |
1857 | * |
1858 | * Returns: 0 for success | |
34f42a07 | 1859 | */ |
85b4aa49 RL |
1860 | static int fcoe_device_notification(struct notifier_block *notifier, |
1861 | ulong event, void *ptr) | |
1862 | { | |
435c8667 | 1863 | struct fcoe_ctlr_device *cdev; |
1875f27e | 1864 | struct fc_lport *lport = NULL; |
351638e7 | 1865 | struct net_device *netdev = netdev_notifier_info_to_dev(ptr); |
619fe4be | 1866 | struct fcoe_ctlr *ctlr; |
014f5c3f | 1867 | struct fcoe_interface *fcoe; |
2e70e241 | 1868 | struct fcoe_port *port; |
1bd49b48 | 1869 | struct fc_stats *stats; |
97c8389d | 1870 | u32 link_possible = 1; |
85b4aa49 RL |
1871 | u32 mfs; |
1872 | int rc = NOTIFY_OK; | |
1873 | ||
014f5c3f | 1874 | list_for_each_entry(fcoe, &fcoe_hostlist, list) { |
25024989 | 1875 | if (fcoe->netdev == netdev) { |
619fe4be RL |
1876 | ctlr = fcoe_to_ctlr(fcoe); |
1877 | lport = ctlr->lp; | |
85b4aa49 RL |
1878 | break; |
1879 | } | |
1880 | } | |
1875f27e | 1881 | if (!lport) { |
85b4aa49 RL |
1882 | rc = NOTIFY_DONE; |
1883 | goto out; | |
1884 | } | |
1885 | ||
85b4aa49 RL |
1886 | switch (event) { |
1887 | case NETDEV_DOWN: | |
1888 | case NETDEV_GOING_DOWN: | |
97c8389d | 1889 | link_possible = 0; |
85b4aa49 RL |
1890 | break; |
1891 | case NETDEV_UP: | |
1892 | case NETDEV_CHANGE: | |
85b4aa49 RL |
1893 | break; |
1894 | case NETDEV_CHANGEMTU: | |
7221d7e5 YZ |
1895 | if (netdev->features & NETIF_F_FCOE_MTU) |
1896 | break; | |
1d1b88dc VD |
1897 | mfs = netdev->mtu - (sizeof(struct fcoe_hdr) + |
1898 | sizeof(struct fcoe_crc_eof)); | |
85b4aa49 | 1899 | if (mfs >= FC_MIN_MAX_FRAME) |
1875f27e | 1900 | fc_set_mfs(lport, mfs); |
85b4aa49 RL |
1901 | break; |
1902 | case NETDEV_REGISTER: | |
1903 | break; | |
2e70e241 CL |
1904 | case NETDEV_UNREGISTER: |
1905 | list_del(&fcoe->list); | |
619fe4be | 1906 | port = lport_priv(ctlr->lp); |
2ca32b48 | 1907 | queue_work(fcoe_wq, &port->destroy_work); |
2e70e241 CL |
1908 | goto out; |
1909 | break; | |
54a5b21d YZ |
1910 | case NETDEV_FEAT_CHANGE: |
1911 | fcoe_netdev_features_change(lport, netdev); | |
1912 | break; | |
85b4aa49 | 1913 | default: |
1d1b88dc | 1914 | FCOE_NETDEV_DBG(netdev, "Unknown event %ld " |
d5488eb9 | 1915 | "from netdev netlink\n", event); |
85b4aa49 | 1916 | } |
5e4f8fe7 RL |
1917 | |
1918 | fcoe_link_speed_update(lport); | |
1919 | ||
435c8667 RL |
1920 | cdev = fcoe_ctlr_to_ctlr_dev(ctlr); |
1921 | ||
1922 | if (link_possible && !fcoe_link_ok(lport)) { | |
1923 | switch (cdev->enabled) { | |
1924 | case FCOE_CTLR_DISABLED: | |
1925 | pr_info("Link up while interface is disabled.\n"); | |
1926 | break; | |
1927 | case FCOE_CTLR_ENABLED: | |
1928 | case FCOE_CTLR_UNUSED: | |
1929 | fcoe_ctlr_link_up(ctlr); | |
1930 | }; | |
1931 | } else if (fcoe_ctlr_link_down(ctlr)) { | |
1932 | switch (cdev->enabled) { | |
1933 | case FCOE_CTLR_DISABLED: | |
1934 | pr_info("Link down while interface is disabled.\n"); | |
1935 | break; | |
1936 | case FCOE_CTLR_ENABLED: | |
1937 | case FCOE_CTLR_UNUSED: | |
1938 | stats = per_cpu_ptr(lport->stats, get_cpu()); | |
1939 | stats->LinkFailureCount++; | |
1940 | put_cpu(); | |
1941 | fcoe_clean_pending_queue(lport); | |
1942 | }; | |
85b4aa49 RL |
1943 | } |
1944 | out: | |
1945 | return rc; | |
1946 | } | |
1947 | ||
55a66d3c VD |
1948 | /** |
1949 | * fcoe_disable() - Disables a FCoE interface | |
78a58246 | 1950 | * @netdev : The net_device object the Ethernet interface to create on |
55a66d3c | 1951 | * |
78a58246 | 1952 | * Called from fcoe transport. |
55a66d3c VD |
1953 | * |
1954 | * Returns: 0 for success | |
435c8667 RL |
1955 | * |
1956 | * Deprecated: use fcoe_ctlr_enabled() | |
55a66d3c | 1957 | */ |
78a58246 | 1958 | static int fcoe_disable(struct net_device *netdev) |
55a66d3c | 1959 | { |
619fe4be | 1960 | struct fcoe_ctlr *ctlr; |
55a66d3c | 1961 | struct fcoe_interface *fcoe; |
55a66d3c VD |
1962 | int rc = 0; |
1963 | ||
1964 | mutex_lock(&fcoe_config_mutex); | |
55a66d3c | 1965 | |
ee5df628 | 1966 | rtnl_lock(); |
55a66d3c VD |
1967 | fcoe = fcoe_hostlist_lookup_port(netdev); |
1968 | rtnl_unlock(); | |
1969 | ||
9ee50e48 | 1970 | if (fcoe) { |
619fe4be RL |
1971 | ctlr = fcoe_to_ctlr(fcoe); |
1972 | fcoe_ctlr_link_down(ctlr); | |
1973 | fcoe_clean_pending_queue(ctlr->lp); | |
9ee50e48 | 1974 | } else |
55a66d3c VD |
1975 | rc = -ENODEV; |
1976 | ||
55a66d3c VD |
1977 | mutex_unlock(&fcoe_config_mutex); |
1978 | return rc; | |
1979 | } | |
1980 | ||
1981 | /** | |
1982 | * fcoe_enable() - Enables a FCoE interface | |
78a58246 | 1983 | * @netdev : The net_device object the Ethernet interface to create on |
55a66d3c | 1984 | * |
78a58246 | 1985 | * Called from fcoe transport. |
55a66d3c VD |
1986 | * |
1987 | * Returns: 0 for success | |
1988 | */ | |
78a58246 | 1989 | static int fcoe_enable(struct net_device *netdev) |
55a66d3c | 1990 | { |
619fe4be | 1991 | struct fcoe_ctlr *ctlr; |
55a66d3c | 1992 | struct fcoe_interface *fcoe; |
55a66d3c VD |
1993 | int rc = 0; |
1994 | ||
1995 | mutex_lock(&fcoe_config_mutex); | |
ee5df628 | 1996 | rtnl_lock(); |
55a66d3c VD |
1997 | fcoe = fcoe_hostlist_lookup_port(netdev); |
1998 | rtnl_unlock(); | |
1999 | ||
619fe4be | 2000 | if (!fcoe) { |
55a66d3c | 2001 | rc = -ENODEV; |
619fe4be RL |
2002 | goto out; |
2003 | } | |
55a66d3c | 2004 | |
619fe4be RL |
2005 | ctlr = fcoe_to_ctlr(fcoe); |
2006 | ||
2007 | if (!fcoe_link_ok(ctlr->lp)) | |
2008 | fcoe_ctlr_link_up(ctlr); | |
2009 | ||
2010 | out: | |
55a66d3c VD |
2011 | mutex_unlock(&fcoe_config_mutex); |
2012 | return rc; | |
2013 | } | |
2014 | ||
435c8667 RL |
2015 | /** |
2016 | * fcoe_ctlr_enabled() - Enable or disable an FCoE Controller | |
2017 | * @cdev: The FCoE Controller that is being enabled or disabled | |
2018 | * | |
2019 | * fcoe_sysfs will ensure that the state of 'enabled' has | |
2020 | * changed, so no checking is necessary here. This routine simply | |
2021 | * calls fcoe_enable or fcoe_disable, both of which are deprecated. | |
2022 | * When those routines are removed the functionality can be merged | |
2023 | * here. | |
2024 | */ | |
2025 | static int fcoe_ctlr_enabled(struct fcoe_ctlr_device *cdev) | |
2026 | { | |
2027 | struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(cdev); | |
2028 | struct fc_lport *lport = ctlr->lp; | |
2029 | struct net_device *netdev = fcoe_netdev(lport); | |
2030 | ||
2031 | switch (cdev->enabled) { | |
2032 | case FCOE_CTLR_ENABLED: | |
2033 | return fcoe_enable(netdev); | |
2034 | case FCOE_CTLR_DISABLED: | |
2035 | return fcoe_disable(netdev); | |
2036 | case FCOE_CTLR_UNUSED: | |
2037 | default: | |
2038 | return -ENOTSUPP; | |
2039 | }; | |
2040 | } | |
2041 | ||
a87dccc7 HR |
2042 | /** |
2043 | * fcoe_ctlr_mode() - Switch FIP mode | |
2044 | * @cdev: The FCoE Controller that is being modified | |
2045 | * | |
2046 | * When the FIP mode has been changed we need to update | |
2047 | * the multicast addresses to ensure we get the correct | |
2048 | * frames. | |
2049 | */ | |
2050 | static void fcoe_ctlr_mode(struct fcoe_ctlr_device *ctlr_dev) | |
2051 | { | |
2052 | struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev); | |
2053 | struct fcoe_interface *fcoe = fcoe_ctlr_priv(ctlr); | |
2054 | ||
2055 | if (ctlr_dev->mode == FIP_CONN_TYPE_VN2VN && | |
2056 | ctlr->mode != FIP_MODE_VN2VN) { | |
2057 | dev_mc_del(fcoe->netdev, FIP_ALL_ENODE_MACS); | |
2058 | dev_mc_add(fcoe->netdev, FIP_ALL_VN2VN_MACS); | |
2059 | dev_mc_add(fcoe->netdev, FIP_ALL_P2P_MACS); | |
2060 | } else if (ctlr->mode != FIP_MODE_FABRIC) { | |
2061 | dev_mc_del(fcoe->netdev, FIP_ALL_VN2VN_MACS); | |
2062 | dev_mc_del(fcoe->netdev, FIP_ALL_P2P_MACS); | |
2063 | dev_mc_add(fcoe->netdev, FIP_ALL_ENODE_MACS); | |
2064 | } | |
2065 | fcoe_ctlr_set_fip_mode(ctlr_dev); | |
2066 | } | |
2067 | ||
85b4aa49 | 2068 | /** |
1875f27e | 2069 | * fcoe_destroy() - Destroy a FCoE interface |
78a58246 | 2070 | * @netdev : The net_device object the Ethernet interface to create on |
1875f27e | 2071 | * |
78a58246 | 2072 | * Called from fcoe transport |
85b4aa49 RL |
2073 | * |
2074 | * Returns: 0 for success | |
34f42a07 | 2075 | */ |
78a58246 | 2076 | static int fcoe_destroy(struct net_device *netdev) |
85b4aa49 | 2077 | { |
619fe4be | 2078 | struct fcoe_ctlr *ctlr; |
030f4e00 | 2079 | struct fcoe_interface *fcoe; |
f04ca1b6 | 2080 | struct fc_lport *lport; |
b2085a4e | 2081 | struct fcoe_port *port; |
8eca355f | 2082 | int rc = 0; |
85b4aa49 | 2083 | |
dfc1d0fe | 2084 | mutex_lock(&fcoe_config_mutex); |
ee5df628 | 2085 | rtnl_lock(); |
2e70e241 CL |
2086 | fcoe = fcoe_hostlist_lookup_port(netdev); |
2087 | if (!fcoe) { | |
85b4aa49 | 2088 | rc = -ENODEV; |
78a58246 | 2089 | goto out_nodev; |
85b4aa49 | 2090 | } |
619fe4be RL |
2091 | ctlr = fcoe_to_ctlr(fcoe); |
2092 | lport = ctlr->lp; | |
b2085a4e | 2093 | port = lport_priv(lport); |
54a5b21d | 2094 | list_del(&fcoe->list); |
b2085a4e | 2095 | queue_work(fcoe_wq, &port->destroy_work); |
85b4aa49 | 2096 | out_nodev: |
b2085a4e | 2097 | rtnl_unlock(); |
dfc1d0fe | 2098 | mutex_unlock(&fcoe_config_mutex); |
85b4aa49 RL |
2099 | return rc; |
2100 | } | |
2101 | ||
1875f27e RL |
2102 | /** |
2103 | * fcoe_destroy_work() - Destroy a FCoE port in a deferred work context | |
2104 | * @work: Handle to the FCoE port to be destroyed | |
2105 | */ | |
2e70e241 CL |
2106 | static void fcoe_destroy_work(struct work_struct *work) |
2107 | { | |
f9c4358e RL |
2108 | struct fcoe_ctlr_device *cdev; |
2109 | struct fcoe_ctlr *ctlr; | |
2e70e241 | 2110 | struct fcoe_port *port; |
b2085a4e | 2111 | struct fcoe_interface *fcoe; |
94aa743a NP |
2112 | struct Scsi_Host *shost; |
2113 | struct fc_host_attrs *fc_host; | |
2114 | unsigned long flags; | |
2115 | struct fc_vport *vport; | |
2116 | struct fc_vport *next_vport; | |
2e70e241 CL |
2117 | |
2118 | port = container_of(work, struct fcoe_port, destroy_work); | |
94aa743a NP |
2119 | shost = port->lport->host; |
2120 | fc_host = shost_to_fc_host(shost); | |
2121 | ||
2122 | /* Loop through all the vports and mark them for deletion */ | |
2123 | spin_lock_irqsave(shost->host_lock, flags); | |
2124 | list_for_each_entry_safe(vport, next_vport, &fc_host->vports, peers) { | |
2125 | if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) { | |
2126 | continue; | |
2127 | } else { | |
2128 | vport->flags |= FC_VPORT_DELETING; | |
2129 | queue_work(fc_host_work_q(shost), | |
2130 | &vport->vport_delete_work); | |
2131 | } | |
2132 | } | |
2133 | spin_unlock_irqrestore(shost->host_lock, flags); | |
2134 | ||
2135 | flush_workqueue(fc_host_work_q(shost)); | |
2136 | ||
2e70e241 | 2137 | mutex_lock(&fcoe_config_mutex); |
b2085a4e | 2138 | |
b2085a4e | 2139 | fcoe = port->priv; |
f9c4358e RL |
2140 | ctlr = fcoe_to_ctlr(fcoe); |
2141 | cdev = fcoe_ctlr_to_ctlr_dev(ctlr); | |
2142 | ||
2e70e241 | 2143 | fcoe_if_destroy(port->lport); |
ccefd23e | 2144 | fcoe_interface_cleanup(fcoe); |
b2085a4e | 2145 | |
2e70e241 | 2146 | mutex_unlock(&fcoe_config_mutex); |
f9c4358e RL |
2147 | |
2148 | fcoe_ctlr_device_delete(cdev); | |
2e70e241 CL |
2149 | } |
2150 | ||
78a58246 YZ |
2151 | /** |
2152 | * fcoe_match() - Check if the FCoE is supported on the given netdevice | |
2153 | * @netdev : The net_device object the Ethernet interface to create on | |
2154 | * | |
2155 | * Called from fcoe transport. | |
2156 | * | |
2157 | * Returns: always returns true as this is the default FCoE transport, | |
2158 | * i.e., support all netdevs. | |
2159 | */ | |
2160 | static bool fcoe_match(struct net_device *netdev) | |
2161 | { | |
2162 | return true; | |
2163 | } | |
2164 | ||
6f6c2aa3 | 2165 | /** |
2166 | * fcoe_dcb_create() - Initialize DCB attributes and hooks | |
2167 | * @netdev: The net_device object of the L2 link that should be queried | |
2168 | * @port: The fcoe_port to bind FCoE APP priority with | |
2169 | * @ | |
2170 | */ | |
2171 | static void fcoe_dcb_create(struct fcoe_interface *fcoe) | |
2172 | { | |
c216e876 HR |
2173 | int ctlr_prio = TC_PRIO_BESTEFFORT; |
2174 | int fcoe_prio = TC_PRIO_INTERACTIVE; | |
c5969656 | 2175 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
6f6c2aa3 | 2176 | #ifdef CONFIG_DCB |
2177 | int dcbx; | |
2178 | u8 fup, up; | |
2179 | struct net_device *netdev = fcoe->realdev; | |
6f6c2aa3 | 2180 | struct dcb_app app = { |
2181 | .priority = 0, | |
2182 | .protocol = ETH_P_FCOE | |
2183 | }; | |
2184 | ||
2185 | /* setup DCB priority attributes. */ | |
2186 | if (netdev && netdev->dcbnl_ops && netdev->dcbnl_ops->getdcbx) { | |
2187 | dcbx = netdev->dcbnl_ops->getdcbx(netdev); | |
2188 | ||
2189 | if (dcbx & DCB_CAP_DCBX_VER_IEEE) { | |
2190 | app.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE; | |
2191 | up = dcb_ieee_getapp_mask(netdev, &app); | |
2192 | app.protocol = ETH_P_FIP; | |
2193 | fup = dcb_ieee_getapp_mask(netdev, &app); | |
2194 | } else { | |
2195 | app.selector = DCB_APP_IDTYPE_ETHTYPE; | |
2196 | up = dcb_getapp(netdev, &app); | |
2197 | app.protocol = ETH_P_FIP; | |
2198 | fup = dcb_getapp(netdev, &app); | |
2199 | } | |
2200 | ||
c216e876 HR |
2201 | fcoe_prio = ffs(up) ? ffs(up) - 1 : 0; |
2202 | ctlr_prio = ffs(fup) ? ffs(fup) - 1 : fcoe_prio; | |
6f6c2aa3 | 2203 | } |
2204 | #endif | |
c216e876 HR |
2205 | fcoe->priority = fcoe_prio; |
2206 | ctlr->priority = ctlr_prio; | |
6f6c2aa3 | 2207 | } |
2208 | ||
435c8667 RL |
2209 | enum fcoe_create_link_state { |
2210 | FCOE_CREATE_LINK_DOWN, | |
2211 | FCOE_CREATE_LINK_UP, | |
2212 | }; | |
2213 | ||
85b4aa49 | 2214 | /** |
435c8667 RL |
2215 | * _fcoe_create() - (internal) Create a fcoe interface |
2216 | * @netdev : The net_device object the Ethernet interface to create on | |
2217 | * @fip_mode: The FIP mode for this creation | |
2218 | * @link_state: The ctlr link state on creation | |
1875f27e | 2219 | * |
435c8667 RL |
2220 | * Called from either the libfcoe 'create' module parameter |
2221 | * via fcoe_create or from fcoe_syfs's ctlr_create file. | |
85b4aa49 | 2222 | * |
435c8667 RL |
2223 | * libfcoe's 'create' module parameter is deprecated so some |
2224 | * consolidation of code can be done when that interface is | |
2225 | * removed. | |
34f42a07 | 2226 | */ |
1917d42d | 2227 | static int _fcoe_create(struct net_device *netdev, enum fip_mode fip_mode, |
435c8667 | 2228 | enum fcoe_create_link_state link_state) |
85b4aa49 | 2229 | { |
b2085a4e | 2230 | int rc = 0; |
8d55e507 | 2231 | struct fcoe_ctlr_device *ctlr_dev; |
619fe4be | 2232 | struct fcoe_ctlr *ctlr; |
030f4e00 | 2233 | struct fcoe_interface *fcoe; |
af7f85d9 | 2234 | struct fc_lport *lport; |
85b4aa49 | 2235 | |
dfc1d0fe | 2236 | mutex_lock(&fcoe_config_mutex); |
ee5df628 | 2237 | rtnl_lock(); |
34ce27bc | 2238 | |
85b4aa49 RL |
2239 | /* look for existing lport */ |
2240 | if (fcoe_hostlist_lookup(netdev)) { | |
2241 | rc = -EEXIST; | |
78a58246 | 2242 | goto out_nodev; |
85b4aa49 | 2243 | } |
85b4aa49 | 2244 | |
1dd454d9 | 2245 | fcoe = fcoe_interface_create(netdev, fip_mode); |
7287fb91 RL |
2246 | if (IS_ERR(fcoe)) { |
2247 | rc = PTR_ERR(fcoe); | |
78a58246 | 2248 | goto out_nodev; |
030f4e00 CL |
2249 | } |
2250 | ||
619fe4be | 2251 | ctlr = fcoe_to_ctlr(fcoe); |
8d55e507 RL |
2252 | ctlr_dev = fcoe_ctlr_to_ctlr_dev(ctlr); |
2253 | lport = fcoe_if_create(fcoe, &ctlr_dev->dev, 0); | |
af7f85d9 | 2254 | if (IS_ERR(lport)) { |
d5488eb9 | 2255 | printk(KERN_ERR "fcoe: Failed to create interface (%s)\n", |
85b4aa49 | 2256 | netdev->name); |
85b4aa49 | 2257 | rc = -EIO; |
848e7d5b | 2258 | rtnl_unlock(); |
2e70e241 | 2259 | fcoe_interface_cleanup(fcoe); |
f9c4358e RL |
2260 | mutex_unlock(&fcoe_config_mutex); |
2261 | fcoe_ctlr_device_delete(ctlr_dev); | |
2262 | goto out; | |
85b4aa49 | 2263 | } |
030f4e00 | 2264 | |
54b649f8 | 2265 | /* Make this the "master" N_Port */ |
619fe4be | 2266 | ctlr->lp = lport; |
54b649f8 | 2267 | |
6f6c2aa3 | 2268 | /* setup DCB priority attributes. */ |
2269 | fcoe_dcb_create(fcoe); | |
2270 | ||
54b649f8 CL |
2271 | /* start FIP Discovery and FLOGI */ |
2272 | lport->boot_time = jiffies; | |
2273 | fc_fabric_login(lport); | |
435c8667 RL |
2274 | |
2275 | /* | |
2276 | * If the fcoe_ctlr_device is to be set to DISABLED | |
2277 | * it must be done after the lport is added to the | |
2278 | * hostlist, but before the rtnl_lock is released. | |
2279 | * This is because the rtnl_lock protects the | |
2280 | * hostlist that fcoe_device_notification uses. If | |
2281 | * the FCoE Controller is intended to be created | |
2282 | * DISABLED then 'enabled' needs to be considered | |
2283 | * handling link events. 'enabled' must be set | |
2284 | * before the lport can be found in the hostlist | |
2285 | * when a link up event is received. | |
2286 | */ | |
2287 | if (link_state == FCOE_CREATE_LINK_UP) | |
2288 | ctlr_dev->enabled = FCOE_CTLR_ENABLED; | |
2289 | else | |
2290 | ctlr_dev->enabled = FCOE_CTLR_DISABLED; | |
2291 | ||
2292 | if (link_state == FCOE_CREATE_LINK_UP && | |
2293 | !fcoe_link_ok(lport)) { | |
22805123 | 2294 | rtnl_unlock(); |
619fe4be | 2295 | fcoe_ctlr_link_up(ctlr); |
22805123 RL |
2296 | mutex_unlock(&fcoe_config_mutex); |
2297 | return rc; | |
2298 | } | |
030f4e00 | 2299 | |
85b4aa49 | 2300 | out_nodev: |
34ce27bc | 2301 | rtnl_unlock(); |
dfc1d0fe | 2302 | mutex_unlock(&fcoe_config_mutex); |
f9c4358e | 2303 | out: |
85b4aa49 RL |
2304 | return rc; |
2305 | } | |
2306 | ||
435c8667 RL |
2307 | /** |
2308 | * fcoe_create() - Create a fcoe interface | |
2309 | * @netdev : The net_device object the Ethernet interface to create on | |
2310 | * @fip_mode: The FIP mode for this creation | |
2311 | * | |
2312 | * Called from fcoe transport | |
2313 | * | |
2314 | * Returns: 0 for success | |
2315 | */ | |
1917d42d | 2316 | static int fcoe_create(struct net_device *netdev, enum fip_mode fip_mode) |
435c8667 RL |
2317 | { |
2318 | return _fcoe_create(netdev, fip_mode, FCOE_CREATE_LINK_UP); | |
2319 | } | |
2320 | ||
2321 | /** | |
2322 | * fcoe_ctlr_alloc() - Allocate a fcoe interface from fcoe_sysfs | |
2323 | * @netdev: The net_device to be used by the allocated FCoE Controller | |
2324 | * | |
2325 | * This routine is called from fcoe_sysfs. It will start the fcoe_ctlr | |
2326 | * in a link_down state. The allows the user an opportunity to configure | |
2327 | * the FCoE Controller from sysfs before enabling the FCoE Controller. | |
2328 | * | |
2329 | * Creating in with this routine starts the FCoE Controller in Fabric | |
2330 | * mode. The user can change to VN2VN or another mode before enabling. | |
2331 | */ | |
2332 | static int fcoe_ctlr_alloc(struct net_device *netdev) | |
2333 | { | |
2334 | return _fcoe_create(netdev, FIP_MODE_FABRIC, | |
2335 | FCOE_CREATE_LINK_DOWN); | |
2336 | } | |
2337 | ||
5e4f8fe7 RL |
2338 | /** |
2339 | * fcoe_link_ok() - Check if the link is OK for a local port | |
2340 | * @lport: The local port to check link on | |
2341 | * | |
2342 | * Returns: 0 if link is UP and OK, -1 if not | |
2343 | * | |
2344 | */ | |
7c9c6841 | 2345 | static int fcoe_link_ok(struct fc_lport *lport) |
5e4f8fe7 | 2346 | { |
8597ae8b | 2347 | struct net_device *netdev = fcoe_netdev(lport); |
5e4f8fe7 RL |
2348 | |
2349 | if (netif_oper_up(netdev)) | |
2350 | return 0; | |
2351 | return -1; | |
2352 | } | |
2353 | ||
34f42a07 | 2354 | /** |
1875f27e RL |
2355 | * fcoe_percpu_clean() - Clear all pending skbs for an local port |
2356 | * @lport: The local port whose skbs are to be cleared | |
e7a51997 JE |
2357 | * |
2358 | * Must be called with fcoe_create_mutex held to single-thread completion. | |
2359 | * | |
4b9bc86d SAS |
2360 | * This flushes the pending skbs by flush the work item for each CPU. The work |
2361 | * item on each possible CPU is flushed because we may have used the per-CPU | |
2362 | * struct of an offline CPU. | |
85b4aa49 | 2363 | */ |
7c9c6841 | 2364 | static void fcoe_percpu_clean(struct fc_lport *lport) |
85b4aa49 | 2365 | { |
85b4aa49 | 2366 | struct fcoe_percpu_s *pp; |
5e5e92df | 2367 | unsigned int cpu; |
85b4aa49 | 2368 | |
5e5e92df RL |
2369 | for_each_possible_cpu(cpu) { |
2370 | pp = &per_cpu(fcoe_percpu, cpu); | |
e7a51997 | 2371 | |
4b9bc86d | 2372 | flush_work(&pp->work); |
85b4aa49 RL |
2373 | } |
2374 | } | |
85b4aa49 | 2375 | |
34f42a07 | 2376 | /** |
1875f27e RL |
2377 | * fcoe_reset() - Reset a local port |
2378 | * @shost: The SCSI host associated with the local port to be reset | |
85b4aa49 | 2379 | * |
1875f27e | 2380 | * Returns: Always 0 (return value required by FC transport template) |
85b4aa49 | 2381 | */ |
7c9c6841 | 2382 | static int fcoe_reset(struct Scsi_Host *shost) |
85b4aa49 RL |
2383 | { |
2384 | struct fc_lport *lport = shost_priv(shost); | |
d2f80952 VD |
2385 | struct fcoe_port *port = lport_priv(lport); |
2386 | struct fcoe_interface *fcoe = port->priv; | |
619fe4be | 2387 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
435c8667 | 2388 | struct fcoe_ctlr_device *cdev = fcoe_ctlr_to_ctlr_dev(ctlr); |
d2f80952 | 2389 | |
619fe4be RL |
2390 | fcoe_ctlr_link_down(ctlr); |
2391 | fcoe_clean_pending_queue(ctlr->lp); | |
435c8667 RL |
2392 | |
2393 | if (cdev->enabled != FCOE_CTLR_DISABLED && | |
2394 | !fcoe_link_ok(ctlr->lp)) | |
619fe4be | 2395 | fcoe_ctlr_link_up(ctlr); |
85b4aa49 RL |
2396 | return 0; |
2397 | } | |
85b4aa49 | 2398 | |
34f42a07 | 2399 | /** |
1875f27e RL |
2400 | * fcoe_hostlist_lookup_port() - Find the FCoE interface associated with a net device |
2401 | * @netdev: The net device used as a key | |
85b4aa49 | 2402 | * |
1875f27e RL |
2403 | * Locking: Must be called with the RNL mutex held. |
2404 | * | |
2405 | * Returns: NULL or the FCoE interface | |
85b4aa49 | 2406 | */ |
014f5c3f | 2407 | static struct fcoe_interface * |
1875f27e | 2408 | fcoe_hostlist_lookup_port(const struct net_device *netdev) |
85b4aa49 | 2409 | { |
014f5c3f | 2410 | struct fcoe_interface *fcoe; |
85b4aa49 | 2411 | |
014f5c3f | 2412 | list_for_each_entry(fcoe, &fcoe_hostlist, list) { |
1875f27e | 2413 | if (fcoe->netdev == netdev) |
014f5c3f | 2414 | return fcoe; |
85b4aa49 | 2415 | } |
85b4aa49 RL |
2416 | return NULL; |
2417 | } | |
2418 | ||
34f42a07 | 2419 | /** |
1875f27e RL |
2420 | * fcoe_hostlist_lookup() - Find the local port associated with a |
2421 | * given net device | |
2422 | * @netdev: The netdevice used as a key | |
85b4aa49 | 2423 | * |
1875f27e RL |
2424 | * Locking: Must be called with the RTNL mutex held |
2425 | * | |
2426 | * Returns: NULL or the local port | |
85b4aa49 | 2427 | */ |
090eb6c4 | 2428 | static struct fc_lport *fcoe_hostlist_lookup(const struct net_device *netdev) |
85b4aa49 | 2429 | { |
619fe4be | 2430 | struct fcoe_ctlr *ctlr; |
014f5c3f | 2431 | struct fcoe_interface *fcoe; |
85b4aa49 | 2432 | |
014f5c3f | 2433 | fcoe = fcoe_hostlist_lookup_port(netdev); |
619fe4be RL |
2434 | ctlr = fcoe_to_ctlr(fcoe); |
2435 | return (fcoe) ? ctlr->lp : NULL; | |
85b4aa49 | 2436 | } |
85b4aa49 | 2437 | |
34f42a07 | 2438 | /** |
1875f27e RL |
2439 | * fcoe_hostlist_add() - Add the FCoE interface identified by a local |
2440 | * port to the hostlist | |
2441 | * @lport: The local port that identifies the FCoE interface to be added | |
85b4aa49 | 2442 | * |
090eb6c4 | 2443 | * Locking: must be called with the RTNL mutex held |
1875f27e RL |
2444 | * |
2445 | * Returns: 0 for success | |
85b4aa49 | 2446 | */ |
090eb6c4 | 2447 | static int fcoe_hostlist_add(const struct fc_lport *lport) |
85b4aa49 | 2448 | { |
014f5c3f CL |
2449 | struct fcoe_interface *fcoe; |
2450 | struct fcoe_port *port; | |
2451 | ||
2452 | fcoe = fcoe_hostlist_lookup_port(fcoe_netdev(lport)); | |
2453 | if (!fcoe) { | |
2454 | port = lport_priv(lport); | |
8597ae8b | 2455 | fcoe = port->priv; |
014f5c3f | 2456 | list_add_tail(&fcoe->list, &fcoe_hostlist); |
85b4aa49 RL |
2457 | } |
2458 | return 0; | |
2459 | } | |
85b4aa49 | 2460 | |
f9184df3 NH |
2461 | /** |
2462 | * fcoe_hostlist_del() - Remove the FCoE interface identified by a local | |
2463 | * port to the hostlist | |
2464 | * @lport: The local port that identifies the FCoE interface to be added | |
2465 | * | |
2466 | * Locking: must be called with the RTNL mutex held | |
2467 | * | |
2468 | */ | |
2469 | static void fcoe_hostlist_del(const struct fc_lport *lport) | |
2470 | { | |
2471 | struct fcoe_interface *fcoe; | |
2472 | struct fcoe_port *port; | |
2473 | ||
2474 | port = lport_priv(lport); | |
2475 | fcoe = port->priv; | |
2476 | list_del(&fcoe->list); | |
2477 | return; | |
2478 | } | |
78a58246 YZ |
2479 | |
2480 | static struct fcoe_transport fcoe_sw_transport = { | |
2481 | .name = {FCOE_TRANSPORT_DEFAULT}, | |
2482 | .attached = false, | |
2483 | .list = LIST_HEAD_INIT(fcoe_sw_transport.list), | |
2484 | .match = fcoe_match, | |
435c8667 | 2485 | .alloc = fcoe_ctlr_alloc, |
78a58246 YZ |
2486 | .create = fcoe_create, |
2487 | .destroy = fcoe_destroy, | |
2488 | .enable = fcoe_enable, | |
2489 | .disable = fcoe_disable, | |
2490 | }; | |
2491 | ||
85b4aa49 | 2492 | /** |
1875f27e | 2493 | * fcoe_init() - Initialize fcoe.ko |
85b4aa49 | 2494 | * |
1875f27e | 2495 | * Returns: 0 on success, or a negative value on failure |
34f42a07 | 2496 | */ |
85b4aa49 RL |
2497 | static int __init fcoe_init(void) |
2498 | { | |
1875f27e | 2499 | struct fcoe_percpu_s *p; |
38eccabd | 2500 | unsigned int cpu; |
8976f424 | 2501 | int rc = 0; |
85b4aa49 | 2502 | |
2ca32b48 TH |
2503 | fcoe_wq = alloc_workqueue("fcoe", 0, 0); |
2504 | if (!fcoe_wq) | |
2505 | return -ENOMEM; | |
2506 | ||
78a58246 YZ |
2507 | /* register as a fcoe transport */ |
2508 | rc = fcoe_transport_attach(&fcoe_sw_transport); | |
2509 | if (rc) { | |
2510 | printk(KERN_ERR "failed to register an fcoe transport, check " | |
2511 | "if libfcoe is loaded\n"); | |
a561a8ea | 2512 | goto out_destroy; |
78a58246 YZ |
2513 | } |
2514 | ||
dfc1d0fe CL |
2515 | mutex_lock(&fcoe_config_mutex); |
2516 | ||
38eccabd | 2517 | for_each_possible_cpu(cpu) { |
4b9bc86d SAS |
2518 | p = per_cpu_ptr(&fcoe_percpu, cpu); |
2519 | INIT_WORK(&p->work, fcoe_receive_work); | |
38eccabd RL |
2520 | skb_queue_head_init(&p->fcoe_rx_list); |
2521 | } | |
2522 | ||
8976f424 | 2523 | /* Setup link change notification */ |
85b4aa49 RL |
2524 | fcoe_dev_setup(); |
2525 | ||
5892c32f CL |
2526 | rc = fcoe_if_init(); |
2527 | if (rc) | |
2528 | goto out_free; | |
85b4aa49 | 2529 | |
dfc1d0fe | 2530 | mutex_unlock(&fcoe_config_mutex); |
85b4aa49 | 2531 | return 0; |
8976f424 RL |
2532 | |
2533 | out_free: | |
dfc1d0fe | 2534 | mutex_unlock(&fcoe_config_mutex); |
a561a8ea | 2535 | out_destroy: |
2ca32b48 | 2536 | destroy_workqueue(fcoe_wq); |
8976f424 | 2537 | return rc; |
85b4aa49 RL |
2538 | } |
2539 | module_init(fcoe_init); | |
2540 | ||
2541 | /** | |
1875f27e | 2542 | * fcoe_exit() - Clean up fcoe.ko |
85b4aa49 | 2543 | * |
1875f27e | 2544 | * Returns: 0 on success or a negative value on failure |
34f42a07 | 2545 | */ |
85b4aa49 RL |
2546 | static void __exit fcoe_exit(void) |
2547 | { | |
014f5c3f | 2548 | struct fcoe_interface *fcoe, *tmp; |
619fe4be | 2549 | struct fcoe_ctlr *ctlr; |
2e70e241 | 2550 | struct fcoe_port *port; |
1875f27e | 2551 | unsigned int cpu; |
85b4aa49 | 2552 | |
dfc1d0fe CL |
2553 | mutex_lock(&fcoe_config_mutex); |
2554 | ||
85b4aa49 RL |
2555 | fcoe_dev_cleanup(); |
2556 | ||
5919a595 | 2557 | /* releases the associated fcoe hosts */ |
090eb6c4 CL |
2558 | rtnl_lock(); |
2559 | list_for_each_entry_safe(fcoe, tmp, &fcoe_hostlist, list) { | |
619fe4be RL |
2560 | ctlr = fcoe_to_ctlr(fcoe); |
2561 | port = lport_priv(ctlr->lp); | |
f9184df3 | 2562 | fcoe_hostlist_del(port->lport); |
2ca32b48 | 2563 | queue_work(fcoe_wq, &port->destroy_work); |
c863df33 | 2564 | } |
090eb6c4 | 2565 | rtnl_unlock(); |
85b4aa49 | 2566 | |
4b9bc86d SAS |
2567 | for_each_possible_cpu(cpu) |
2568 | fcoe_thread_cleanup_local(cpu); | |
cd45ae38 | 2569 | |
dfc1d0fe | 2570 | mutex_unlock(&fcoe_config_mutex); |
2e70e241 | 2571 | |
2ca32b48 TH |
2572 | /* |
2573 | * destroy_work's may be chained but destroy_workqueue() | |
2574 | * can take care of them. Just kill the fcoe_wq. | |
2575 | */ | |
2576 | destroy_workqueue(fcoe_wq); | |
2e70e241 | 2577 | |
2ca32b48 TH |
2578 | /* |
2579 | * Detaching from the scsi transport must happen after all | |
2580 | * destroys are done on the fcoe_wq. destroy_workqueue will | |
2581 | * enusre the fcoe_wq is flushed. | |
2582 | */ | |
2e70e241 | 2583 | fcoe_if_exit(); |
78a58246 YZ |
2584 | |
2585 | /* detach from fcoe transport */ | |
2586 | fcoe_transport_detach(&fcoe_sw_transport); | |
85b4aa49 RL |
2587 | } |
2588 | module_exit(fcoe_exit); | |
11b56188 CL |
2589 | |
2590 | /** | |
2591 | * fcoe_flogi_resp() - FCoE specific FLOGI and FDISC response handler | |
2592 | * @seq: active sequence in the FLOGI or FDISC exchange | |
2593 | * @fp: response frame, or error encoded in a pointer (timeout) | |
2594 | * @arg: pointer the the fcoe_ctlr structure | |
2595 | * | |
65155b37 | 2596 | * This handles MAC address management for FCoE, then passes control on to |
11b56188 CL |
2597 | * the libfc FLOGI response handler. |
2598 | */ | |
2599 | static void fcoe_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, void *arg) | |
2600 | { | |
2601 | struct fcoe_ctlr *fip = arg; | |
2602 | struct fc_exch *exch = fc_seq_exch(seq); | |
2603 | struct fc_lport *lport = exch->lp; | |
2604 | u8 *mac; | |
2605 | ||
2606 | if (IS_ERR(fp)) | |
2607 | goto done; | |
2608 | ||
2609 | mac = fr_cb(fp)->granted_mac; | |
907c07d4 VD |
2610 | /* pre-FIP */ |
2611 | if (is_zero_ether_addr(mac)) | |
2612 | fcoe_ctlr_recv_flogi(fip, lport, fp); | |
2613 | if (!is_zero_ether_addr(mac)) | |
2614 | fcoe_update_src_mac(lport, mac); | |
11b56188 CL |
2615 | done: |
2616 | fc_lport_flogi_resp(seq, fp, lport); | |
2617 | } | |
2618 | ||
2619 | /** | |
2620 | * fcoe_logo_resp() - FCoE specific LOGO response handler | |
2621 | * @seq: active sequence in the LOGO exchange | |
2622 | * @fp: response frame, or error encoded in a pointer (timeout) | |
2623 | * @arg: pointer the the fcoe_ctlr structure | |
2624 | * | |
65155b37 | 2625 | * This handles MAC address management for FCoE, then passes control on to |
11b56188 CL |
2626 | * the libfc LOGO response handler. |
2627 | */ | |
2628 | static void fcoe_logo_resp(struct fc_seq *seq, struct fc_frame *fp, void *arg) | |
2629 | { | |
386309ce | 2630 | struct fc_lport *lport = arg; |
11b56188 CL |
2631 | static u8 zero_mac[ETH_ALEN] = { 0 }; |
2632 | ||
2633 | if (!IS_ERR(fp)) | |
386309ce | 2634 | fcoe_update_src_mac(lport, zero_mac); |
11b56188 CL |
2635 | fc_lport_logo_resp(seq, fp, lport); |
2636 | } | |
2637 | ||
2638 | /** | |
2639 | * fcoe_elsct_send - FCoE specific ELS handler | |
2640 | * | |
2641 | * This does special case handling of FIP encapsualted ELS exchanges for FCoE, | |
2642 | * using FCoE specific response handlers and passing the FIP controller as | |
2643 | * the argument (the lport is still available from the exchange). | |
2644 | * | |
2645 | * Most of the work here is just handed off to the libfc routine. | |
2646 | */ | |
1875f27e RL |
2647 | static struct fc_seq *fcoe_elsct_send(struct fc_lport *lport, u32 did, |
2648 | struct fc_frame *fp, unsigned int op, | |
2649 | void (*resp)(struct fc_seq *, | |
2650 | struct fc_frame *, | |
2651 | void *), | |
2652 | void *arg, u32 timeout) | |
11b56188 CL |
2653 | { |
2654 | struct fcoe_port *port = lport_priv(lport); | |
8597ae8b | 2655 | struct fcoe_interface *fcoe = port->priv; |
619fe4be | 2656 | struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe); |
11b56188 CL |
2657 | struct fc_frame_header *fh = fc_frame_header_get(fp); |
2658 | ||
2659 | switch (op) { | |
2660 | case ELS_FLOGI: | |
2661 | case ELS_FDISC: | |
e10f8c66 JE |
2662 | if (lport->point_to_multipoint) |
2663 | break; | |
11b56188 CL |
2664 | return fc_elsct_send(lport, did, fp, op, fcoe_flogi_resp, |
2665 | fip, timeout); | |
2666 | case ELS_LOGO: | |
2667 | /* only hook onto fabric logouts, not port logouts */ | |
2668 | if (ntoh24(fh->fh_d_id) != FC_FID_FLOGI) | |
2669 | break; | |
2670 | return fc_elsct_send(lport, did, fp, op, fcoe_logo_resp, | |
386309ce | 2671 | lport, timeout); |
11b56188 CL |
2672 | } |
2673 | return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); | |
2674 | } | |
2675 | ||
9a05753b CL |
2676 | /** |
2677 | * fcoe_vport_create() - create an fc_host/scsi_host for a vport | |
2678 | * @vport: fc_vport object to create a new fc_host for | |
2679 | * @disabled: start the new fc_host in a disabled state by default? | |
2680 | * | |
2681 | * Returns: 0 for success | |
2682 | */ | |
2683 | static int fcoe_vport_create(struct fc_vport *vport, bool disabled) | |
2684 | { | |
2685 | struct Scsi_Host *shost = vport_to_shost(vport); | |
2686 | struct fc_lport *n_port = shost_priv(shost); | |
2687 | struct fcoe_port *port = lport_priv(n_port); | |
8597ae8b | 2688 | struct fcoe_interface *fcoe = port->priv; |
9a05753b CL |
2689 | struct net_device *netdev = fcoe->netdev; |
2690 | struct fc_lport *vn_port; | |
bdf25218 NP |
2691 | int rc; |
2692 | char buf[32]; | |
2693 | ||
2694 | rc = fcoe_validate_vport_create(vport); | |
2695 | if (rc) { | |
d834895c | 2696 | fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); |
bdf25218 NP |
2697 | printk(KERN_ERR "fcoe: Failed to create vport, " |
2698 | "WWPN (0x%s) already exists\n", | |
2699 | buf); | |
2700 | return rc; | |
2701 | } | |
9a05753b CL |
2702 | |
2703 | mutex_lock(&fcoe_config_mutex); | |
4bc71cb9 | 2704 | rtnl_lock(); |
9a05753b | 2705 | vn_port = fcoe_if_create(fcoe, &vport->dev, 1); |
4bc71cb9 | 2706 | rtnl_unlock(); |
9a05753b CL |
2707 | mutex_unlock(&fcoe_config_mutex); |
2708 | ||
2709 | if (IS_ERR(vn_port)) { | |
2710 | printk(KERN_ERR "fcoe: fcoe_vport_create(%s) failed\n", | |
2711 | netdev->name); | |
2712 | return -EIO; | |
2713 | } | |
2714 | ||
2715 | if (disabled) { | |
2716 | fc_vport_set_state(vport, FC_VPORT_DISABLED); | |
2717 | } else { | |
2718 | vn_port->boot_time = jiffies; | |
2719 | fc_fabric_login(vn_port); | |
2720 | fc_vport_setlink(vn_port); | |
2721 | } | |
2722 | return 0; | |
2723 | } | |
2724 | ||
2725 | /** | |
2726 | * fcoe_vport_destroy() - destroy the fc_host/scsi_host for a vport | |
2727 | * @vport: fc_vport object that is being destroyed | |
2728 | * | |
2729 | * Returns: 0 for success | |
2730 | */ | |
2731 | static int fcoe_vport_destroy(struct fc_vport *vport) | |
2732 | { | |
2733 | struct Scsi_Host *shost = vport_to_shost(vport); | |
2734 | struct fc_lport *n_port = shost_priv(shost); | |
2735 | struct fc_lport *vn_port = vport->dd_data; | |
9a05753b CL |
2736 | |
2737 | mutex_lock(&n_port->lp_mutex); | |
2738 | list_del(&vn_port->list); | |
2739 | mutex_unlock(&n_port->lp_mutex); | |
ccefd23e RL |
2740 | |
2741 | mutex_lock(&fcoe_config_mutex); | |
2742 | fcoe_if_destroy(vn_port); | |
2743 | mutex_unlock(&fcoe_config_mutex); | |
2744 | ||
9a05753b CL |
2745 | return 0; |
2746 | } | |
2747 | ||
2748 | /** | |
2749 | * fcoe_vport_disable() - change vport state | |
2750 | * @vport: vport to bring online/offline | |
2751 | * @disable: should the vport be disabled? | |
2752 | */ | |
2753 | static int fcoe_vport_disable(struct fc_vport *vport, bool disable) | |
2754 | { | |
2755 | struct fc_lport *lport = vport->dd_data; | |
2756 | ||
2757 | if (disable) { | |
2758 | fc_vport_set_state(vport, FC_VPORT_DISABLED); | |
2759 | fc_fabric_logoff(lport); | |
2760 | } else { | |
2761 | lport->boot_time = jiffies; | |
2762 | fc_fabric_login(lport); | |
2763 | fc_vport_setlink(lport); | |
2764 | } | |
2765 | ||
2766 | return 0; | |
2767 | } | |
2768 | ||
dc8596d3 CL |
2769 | /** |
2770 | * fcoe_vport_set_symbolic_name() - append vport string to symbolic name | |
2771 | * @vport: fc_vport with a new symbolic name string | |
2772 | * | |
2773 | * After generating a new symbolic name string, a new RSPN_ID request is | |
2774 | * sent to the name server. There is no response handler, so if it fails | |
2775 | * for some reason it will not be retried. | |
2776 | */ | |
2777 | static void fcoe_set_vport_symbolic_name(struct fc_vport *vport) | |
2778 | { | |
2779 | struct fc_lport *lport = vport->dd_data; | |
2780 | struct fc_frame *fp; | |
2781 | size_t len; | |
2782 | ||
2783 | snprintf(fc_host_symbolic_name(lport->host), FC_SYMBOLIC_NAME_SIZE, | |
2784 | "%s v%s over %s : %s", FCOE_NAME, FCOE_VERSION, | |
2785 | fcoe_netdev(lport)->name, vport->symbolic_name); | |
2786 | ||
2787 | if (lport->state != LPORT_ST_READY) | |
2788 | return; | |
2789 | ||
2790 | len = strnlen(fc_host_symbolic_name(lport->host), 255); | |
2791 | fp = fc_frame_alloc(lport, | |
2792 | sizeof(struct fc_ct_hdr) + | |
2793 | sizeof(struct fc_ns_rspn) + len); | |
2794 | if (!fp) | |
2795 | return; | |
2796 | lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RSPN_ID, | |
b94f8951 | 2797 | NULL, NULL, 3 * lport->r_a_tov); |
dc8596d3 | 2798 | } |
b84056bf | 2799 | |
8d55e507 RL |
2800 | static void fcoe_fcf_get_vlan_id(struct fcoe_fcf_device *fcf_dev) |
2801 | { | |
2802 | struct fcoe_ctlr_device *ctlr_dev = | |
2803 | fcoe_fcf_dev_to_ctlr_dev(fcf_dev); | |
2804 | struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev); | |
2805 | struct fcoe_interface *fcoe = fcoe_ctlr_priv(ctlr); | |
2806 | ||
2807 | fcf_dev->vlan_id = vlan_dev_vlan_id(fcoe->netdev); | |
2808 | } | |
2809 | ||
7d65b0df JE |
2810 | /** |
2811 | * fcoe_set_port_id() - Callback from libfc when Port_ID is set. | |
2812 | * @lport: the local port | |
2813 | * @port_id: the port ID | |
2814 | * @fp: the received frame, if any, that caused the port_id to be set. | |
2815 | * | |
2816 | * This routine handles the case where we received a FLOGI and are | |
2817 | * entering point-to-point mode. We need to call fcoe_ctlr_recv_flogi() | |
2818 | * so it can set the non-mapped mode and gateway address. | |
2819 | * | |
2820 | * The FLOGI LS_ACC is handled by fcoe_flogi_resp(). | |
2821 | */ | |
2822 | static void fcoe_set_port_id(struct fc_lport *lport, | |
2823 | u32 port_id, struct fc_frame *fp) | |
2824 | { | |
2825 | struct fcoe_port *port = lport_priv(lport); | |
8597ae8b | 2826 | struct fcoe_interface *fcoe = port->priv; |
619fe4be | 2827 | struct fcoe_ctlr *ctlr = fcoe_to_ctlr(fcoe); |
7d65b0df JE |
2828 | |
2829 | if (fp && fc_frame_payload_op(fp) == ELS_FLOGI) | |
619fe4be | 2830 | fcoe_ctlr_recv_flogi(ctlr, lport, fp); |
7d65b0df | 2831 | } |