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[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>
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2 changed files with 40 additions and 0 deletions
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@ -111,6 +111,8 @@ static struct fc_seq *fcoe_elsct_send(struct fc_lport *,
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void *, u32 timeout);
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void *, u32 timeout);
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static void fcoe_recv_frame(struct sk_buff *skb);
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static void fcoe_recv_frame(struct sk_buff *skb);
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static void fcoe_get_lesb(struct fc_lport *, struct fc_els_lesb *);
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module_param_call(create, fcoe_create, NULL, NULL, S_IWUSR);
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module_param_call(create, fcoe_create, NULL, NULL, S_IWUSR);
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__MODULE_PARM_TYPE(create, "string");
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__MODULE_PARM_TYPE(create, "string");
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MODULE_PARM_DESC(create, "Create fcoe fcoe using net device passed in.");
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MODULE_PARM_DESC(create, "Create fcoe fcoe using net device passed in.");
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@ -141,6 +143,7 @@ static struct libfc_function_template fcoe_libfc_fcn_templ = {
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.ddp_setup = fcoe_ddp_setup,
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.ddp_setup = fcoe_ddp_setup,
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.ddp_done = fcoe_ddp_done,
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.ddp_done = fcoe_ddp_done,
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.elsct_send = fcoe_elsct_send,
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.elsct_send = fcoe_elsct_send,
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.get_lesb = fcoe_get_lesb,
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};
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};
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struct fc_function_template fcoe_transport_function = {
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struct fc_function_template fcoe_transport_function = {
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@ -2455,3 +2458,34 @@ static void fcoe_set_vport_symbolic_name(struct fc_vport *vport)
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lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RSPN_ID,
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lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RSPN_ID,
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NULL, NULL, 3 * lport->r_a_tov);
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NULL, NULL, 3 * lport->r_a_tov);
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}
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}
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/**
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* fcoe_get_lesb() - Fill the FCoE Link Error Status Block
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* @lport: the local port
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* @fc_lesb: the link error status block
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*/
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static void fcoe_get_lesb(struct fc_lport *lport,
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struct fc_els_lesb *fc_lesb)
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{
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unsigned int cpu;
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u32 lfc, vlfc, mdac;
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struct fcoe_dev_stats *devst;
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struct fcoe_fc_els_lesb *lesb;
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struct net_device *netdev = fcoe_netdev(lport);
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lfc = 0;
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vlfc = 0;
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mdac = 0;
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lesb = (struct fcoe_fc_els_lesb *)fc_lesb;
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memset(lesb, 0, sizeof(*lesb));
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for_each_possible_cpu(cpu) {
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devst = per_cpu_ptr(lport->dev_stats, cpu);
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lfc += devst->LinkFailureCount;
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vlfc += devst->VLinkFailureCount;
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mdac += devst->MissDiscAdvCount;
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}
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lesb->lesb_link_fail = htonl(lfc);
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lesb->lesb_vlink_fail = htonl(vlfc);
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lesb->lesb_miss_fka = htonl(mdac);
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lesb->lesb_fcs_error = htonl(dev_get_stats(netdev)->rx_crc_errors);
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}
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@ -510,6 +510,12 @@ struct libfc_function_template {
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* STATUS: OPTIONAL
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* STATUS: OPTIONAL
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*/
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*/
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int (*ddp_done)(struct fc_lport *, u16);
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int (*ddp_done)(struct fc_lport *, u16);
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/*
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* Allow LLD to fill its own Link Error Status Block
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*
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* STATUS: OPTIONAL
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*/
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void (*get_lesb)(struct fc_lport *, struct fc_els_lesb *lesb);
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/*
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/*
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* Send a frame using an existing sequence and exchange.
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* Send a frame using an existing sequence and exchange.
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*
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*
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