tcpm_cc_is_source
((tcpm_cc_is_source((port)->cc1) && \
!tcpm_cc_is_source((port)->cc2)) || \
(tcpm_cc_is_source((port)->cc2) && \
!tcpm_cc_is_source((port)->cc1)))
(tcpm_cc_is_source((port)->cc1) && tcpm_cc_is_source((port)->cc2))