Commit b84056bf authored by Yi Zou's avatar Yi Zou Committed by James Bottomley

[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: default avatarYi Zou <yi.zou@intel.com>
Signed-off-by: default avatarRobert Love <robert.w.love@intel.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@suse.de>
parent b21a0c39
...@@ -111,6 +111,8 @@ static struct fc_seq *fcoe_elsct_send(struct fc_lport *, ...@@ -111,6 +111,8 @@ static struct fc_seq *fcoe_elsct_send(struct fc_lport *,
void *, u32 timeout); void *, u32 timeout);
static void fcoe_recv_frame(struct sk_buff *skb); 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_param_call(create, fcoe_create, NULL, NULL, S_IWUSR);
__MODULE_PARM_TYPE(create, "string"); __MODULE_PARM_TYPE(create, "string");
MODULE_PARM_DESC(create, "Create fcoe fcoe using net device passed in."); 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 = { ...@@ -141,6 +143,7 @@ static struct libfc_function_template fcoe_libfc_fcn_templ = {
.ddp_setup = fcoe_ddp_setup, .ddp_setup = fcoe_ddp_setup,
.ddp_done = fcoe_ddp_done, .ddp_done = fcoe_ddp_done,
.elsct_send = fcoe_elsct_send, .elsct_send = fcoe_elsct_send,
.get_lesb = fcoe_get_lesb,
}; };
struct fc_function_template fcoe_transport_function = { struct fc_function_template fcoe_transport_function = {
...@@ -2455,3 +2458,34 @@ static void fcoe_set_vport_symbolic_name(struct fc_vport *vport) ...@@ -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, lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RSPN_ID,
NULL, NULL, 3 * lport->r_a_tov); 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);
}
...@@ -510,6 +510,12 @@ struct libfc_function_template { ...@@ -510,6 +510,12 @@ struct libfc_function_template {
* STATUS: OPTIONAL * STATUS: OPTIONAL
*/ */
int (*ddp_done)(struct fc_lport *, u16); 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. * Send a frame using an existing sequence and exchange.
* *
......
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