256     int dh;  member
704     return core->mac[r->dh] == core->mac[r->dt] ||  in igb_ring_empty()
720     return igb_ring_base(core, r) + E1000_RING_DESC_LEN * core->mac[r->dh];  in igb_ring_head_descr()
726     core->mac[r->dh] += count;  in igb_ring_advance()
728     if (core->mac[r->dh] * E1000_RING_DESC_LEN >= core->mac[r->dlen]) {  in igb_ring_advance()
729         core->mac[r->dh] = 0;  in igb_ring_advance()
737                                  core->mac[r->dh],  core->mac[r->dt]);  in igb_ring_free_descr_num()
739     if (core->mac[r->dh] <= core->mac[r->dt]) {  in igb_ring_free_descr_num()
740         return core->mac[r->dt] - core->mac[r->dh];  in igb_ring_free_descr_num()
743     if (core->mac[r->dh] > core->mac[r->dt]) {  in igb_ring_free_descr_num()
745                core->mac[r->dt] - core->mac[r->dh];  in igb_ring_free_descr_num()
849         uint32_t buffer = cpu_to_le32(core->mac[txi->dh]);  in igb_txdesc_writeback()