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F-RTO does not touch SACKED_ACKED bits at all, so there is no need to recount them in tcp_enter_frto_loss. After removal of the else branch, nested ifs can be combined. This must also reset sacked_out when SACK is not in use as TCP could have received some duplicate ACKs prior RTO. To achieve that in a sane manner, tcp_reset_reno_sack was re-placed by the previous patch. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>