sm_pm_get_ls
ls_a = sm_pm_get_ls(smc,PA) ;
ls_b = sm_pm_get_ls(smc,PB) ;
int sm_pm_get_ls(struct s_smc *smc, int phy);
pcs->pcm_ls_rx = LS2MIB(sm_pm_get_ls(smc,i)) ;
sm_pm_get_ls(smc,port_to_mib(smc,port))) ;