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| author | Yi Zou <yi.zou@intel.com> | 2009-11-20 14:55:19 -0800 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2009-12-04 12:01:58 -0600 |
| commit | b84056bf68404a5fe06b452ea9790b9927e793a6 (patch) | |
| tree | 67e9129cd1cf94465f6845ee8f378c856b27bd04 | |
| parent | b21a0c397eea722ff84bbeaf5e6e732a06b69896 (diff) | |
| download | kernel-common-b84056bf68404a5fe06b452ea9790b9927e793a6.tar.gz kernel-common-b84056bf68404a5fe06b452ea9790b9927e793a6.tar.bz2 kernel-common-b84056bf68404a5fe06b452ea9790b9927e793a6.zip | |
[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>
| -rw-r--r-- | drivers/scsi/fcoe/fcoe.c | 34 | ||||
| -rw-r--r-- | include/scsi/libfc.h | 6 |
2 files changed, 40 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 *, void *, u32 timeout); static void fcoe_recv_frame(struct sk_buff *skb); +static void fcoe_get_lesb(struct fc_lport *, struct fc_els_lesb *); + module_param_call(create, fcoe_create, NULL, NULL, S_IWUSR); __MODULE_PARM_TYPE(create, "string"); MODULE_PARM_DESC(create, "Create fcoe fcoe using net device passed in."); @@ -141,6 +143,7 @@ static struct libfc_function_template fcoe_libfc_fcn_templ = { .ddp_setup = fcoe_ddp_setup, .ddp_done = fcoe_ddp_done, .elsct_send = fcoe_elsct_send, + .get_lesb = fcoe_get_lesb, }; struct fc_function_template fcoe_transport_function = { @@ -2455,3 +2458,34 @@ static void fcoe_set_vport_symbolic_name(struct fc_vport *vport) lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RSPN_ID, NULL, NULL, 3 * lport->r_a_tov); } + +/** + * fcoe_get_lesb() - Fill the FCoE Link Error Status Block + * @lport: the local port + * @fc_lesb: the link error status block + */ +static void fcoe_get_lesb(struct fc_lport *lport, + struct fc_els_lesb *fc_lesb) +{ + unsigned int cpu; + u32 lfc, vlfc, mdac; + struct fcoe_dev_stats *devst; + struct fcoe_fc_els_lesb *lesb; + struct net_device *netdev = fcoe_netdev(lport); + + lfc = 0; + vlfc = 0; + mdac = 0; + lesb = (struct fcoe_fc_els_lesb *)fc_lesb; + memset(lesb, 0, sizeof(*lesb)); + for_each_possible_cpu(cpu) { + devst = per_cpu_ptr(lport->dev_stats, cpu); + lfc += devst->LinkFailureCount; + vlfc += devst->VLinkFailureCount; + mdac += devst->MissDiscAdvCount; + } + lesb->lesb_link_fail = htonl(lfc); + lesb->lesb_vlink_fail = htonl(vlfc); + lesb->lesb_miss_fka = htonl(mdac); + lesb->lesb_fcs_error = htonl(dev_get_stats(netdev)->rx_crc_errors); +} diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h index b97be2903cbc..4b912eee33e5 100644 --- a/include/scsi/libfc.h +++ b/include/scsi/libfc.h @@ -511,6 +511,12 @@ struct libfc_function_template { */ int (*ddp_done)(struct fc_lport *, u16); /* + * Allow LLD to fill its own Link Error Status Block + * + * STATUS: OPTIONAL + */ + void (*get_lesb)(struct fc_lport *, struct fc_els_lesb *lesb); + /* * Send a frame using an existing sequence and exchange. * * STATUS: OPTIONAL |