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authorYi Zou <yi.zou@intel.com>2009-11-20 17:55:19 -0500
committerJames Bottomley <James.Bottomley@suse.de>2009-12-04 13:01:58 -0500
commitb84056bf68404a5fe06b452ea9790b9927e793a6 (patch)
tree67e9129cd1cf94465f6845ee8f378c856b27bd04 /drivers/scsi
parentb21a0c397eea722ff84bbeaf5e6e732a06b69896 (diff)
[SCSI] fcoe, libfc: add get_lesb() to allow LLD to fill the link error status block (LESB)
Add a member function pointer as get_lesb to libfc_function_template so LLD can fill the LESB based on its own statistics. For fcoe, it fills the LESB as a fcoe_fc_els_lesb struct according to FC-BB-5. Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/fcoe/fcoe.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index 32298ed60614..a30ffaa1222c 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -111,6 +111,8 @@ static struct fc_seq *fcoe_elsct_send(struct fc_lport *,
111 void *, u32 timeout); 111 void *, u32 timeout);
112static void fcoe_recv_frame(struct sk_buff *skb); 112static void fcoe_recv_frame(struct sk_buff *skb);
113 113
114static void fcoe_get_lesb(struct fc_lport *, struct fc_els_lesb *);
115
114module_param_call(create, fcoe_create, NULL, NULL, S_IWUSR); 116module_param_call(create, fcoe_create, NULL, NULL, S_IWUSR);
115__MODULE_PARM_TYPE(create, "string"); 117__MODULE_PARM_TYPE(create, "string");
116MODULE_PARM_DESC(create, "Create fcoe fcoe using net device passed in."); 118MODULE_PARM_DESC(create, "Create fcoe fcoe using net device passed in.");
@@ -141,6 +143,7 @@ static struct libfc_function_template fcoe_libfc_fcn_templ = {
141 .ddp_setup = fcoe_ddp_setup, 143 .ddp_setup = fcoe_ddp_setup,
142 .ddp_done = fcoe_ddp_done, 144 .ddp_done = fcoe_ddp_done,
143 .elsct_send = fcoe_elsct_send, 145 .elsct_send = fcoe_elsct_send,
146 .get_lesb = fcoe_get_lesb,
144}; 147};
145 148
146struct fc_function_template fcoe_transport_function = { 149struct fc_function_template fcoe_transport_function = {
@@ -2455,3 +2458,34 @@ static void fcoe_set_vport_symbolic_name(struct fc_vport *vport)
2455 lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RSPN_ID, 2458 lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RSPN_ID,
2456 NULL, NULL, 3 * lport->r_a_tov); 2459 NULL, NULL, 3 * lport->r_a_tov);
2457} 2460}
2461
2462/**
2463 * fcoe_get_lesb() - Fill the FCoE Link Error Status Block
2464 * @lport: the local port
2465 * @fc_lesb: the link error status block
2466 */
2467static void fcoe_get_lesb(struct fc_lport *lport,
2468 struct fc_els_lesb *fc_lesb)
2469{
2470 unsigned int cpu;
2471 u32 lfc, vlfc, mdac;
2472 struct fcoe_dev_stats *devst;
2473 struct fcoe_fc_els_lesb *lesb;
2474 struct net_device *netdev = fcoe_netdev(lport);
2475
2476 lfc = 0;
2477 vlfc = 0;
2478 mdac = 0;
2479 lesb = (struct fcoe_fc_els_lesb *)fc_lesb;
2480 memset(lesb, 0, sizeof(*lesb));
2481 for_each_possible_cpu(cpu) {
2482 devst = per_cpu_ptr(lport->dev_stats, cpu);
2483 lfc += devst->LinkFailureCount;
2484 vlfc += devst->VLinkFailureCount;
2485 mdac += devst->MissDiscAdvCount;
2486 }
2487 lesb->lesb_link_fail = htonl(lfc);
2488 lesb->lesb_vlink_fail = htonl(vlfc);
2489 lesb->lesb_miss_fka = htonl(mdac);
2490 lesb->lesb_fcs_error = htonl(dev_get_stats(netdev)->rx_crc_errors);
2491}