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[SCSI] lpfc 8.3.38: Fixed potential mis-interpretation of READ_TOPOLOGY reserved fields 

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
James Smart 2013-03-01 16:38:14 -05:00 коммит произвёл James Bottomley
Родитель c14e995777
Коммит be0c008003
1 изменённых файлов: 15 добавлений и 13 удалений
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16
drivers/scsi/lpfc/lpfc_hbadisc.c
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@ -3249,8 +3249,7 @@ lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
vport->fc_flag &= ~FC_BYPASSED_MODE; vport->fc_flag &= ~FC_BYPASSED_MODE;
spin_unlock_irq(shost->host_lock); spin_unlock_irq(shost->host_lock);
if ((phba->fc_eventTag < la->eventTag) || if (phba->fc_eventTag <= la->eventTag) {
(phba->fc_eventTag == la->eventTag)) {
phba->fc_stat.LinkMultiEvent++; phba->fc_stat.LinkMultiEvent++;
if (bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP) if (bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP)
if (phba->fc_eventTag != 0) if (phba->fc_eventTag != 0)
@ -3258,16 +3257,18 @@ lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
} }
phba->fc_eventTag = la->eventTag; phba->fc_eventTag = la->eventTag;
if (phba->sli_rev < LPFC_SLI_REV4) {
spin_lock_irq(&phba->hbalock); spin_lock_irq(&phba->hbalock);
if (bf_get(lpfc_mbx_read_top_mm, la)) if (bf_get(lpfc_mbx_read_top_mm, la))
phba->sli.sli_flag |= LPFC_MENLO_MAINT; phba->sli.sli_flag |= LPFC_MENLO_MAINT;
else else
phba->sli.sli_flag &= ~LPFC_MENLO_MAINT; phba->sli.sli_flag &= ~LPFC_MENLO_MAINT;
spin_unlock_irq(&phba->hbalock); spin_unlock_irq(&phba->hbalock);
}
phba->link_events++; phba->link_events++;
if ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP) && if ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP) &&
(!bf_get(lpfc_mbx_read_top_mm, la))) { !(phba->sli.sli_flag & LPFC_MENLO_MAINT)) {
phba->fc_stat.LinkUp++; phba->fc_stat.LinkUp++;
if (phba->link_flag & LS_LOOPBACK_MODE) { if (phba->link_flag & LS_LOOPBACK_MODE) {
lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
@ -3312,8 +3313,8 @@ lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
bf_get(lpfc_mbx_read_top_fa, la)); bf_get(lpfc_mbx_read_top_fa, la));
lpfc_mbx_issue_link_down(phba); lpfc_mbx_issue_link_down(phba);
} }
if ((bf_get(lpfc_mbx_read_top_mm, la)) && if ((phba->sli.sli_flag & LPFC_MENLO_MAINT) &&
(bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP)) { ((bf_get(lpfc_mbx_read_top_att_type, la) == LPFC_ATT_LINK_UP))) {
if (phba->link_state != LPFC_LINK_DOWN) { if (phba->link_state != LPFC_LINK_DOWN) {
phba->fc_stat.LinkDown++; phba->fc_stat.LinkDown++;
lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
@ -3341,8 +3342,9 @@ lpfc_mbx_cmpl_read_topology(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
} }
} }
if (bf_get(lpfc_mbx_read_top_fa, la)) { if ((phba->sli_rev < LPFC_SLI_REV4) &&
if (bf_get(lpfc_mbx_read_top_mm, la)) bf_get(lpfc_mbx_read_top_fa, la)) {
if (phba->sli.sli_flag & LPFC_MENLO_MAINT)
lpfc_issue_clear_la(phba, vport); lpfc_issue_clear_la(phba, vport);
lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
"1311 fa %d\n", "1311 fa %d\n",