seqno_inc
err = fence_chains_init(&fc, 64, seqno_inc);
err = fence_chains_init(&fc, 2, seqno_inc);
err = fence_chains_init(&fc, 3, seqno_inc);
err = fence_chains_init(&data.fc, CHAIN_SZ, seqno_inc);
err = fence_chains_init(&fc, 64, seqno_inc);
err = fence_chains_init(&fc, 64, seqno_inc);
err = fence_chains_init(&fc, CHAIN_SZ, seqno_inc);
err = fence_chains_init(&fc, CHAIN_SZ, seqno_inc);
err = fence_chains_init(&fc, CHAIN_SZ, seqno_inc);