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authorIlpo Järvinen <ilpo.jarvinen@helsinki.fi>2009-09-15 01:30:10 -0700
committerDavid S. Miller <davem@davemloft.net>2009-09-15 01:30:10 -0700
commit0b6a05c1dbebe8c616e2e5b0f52b7a01fd792911 (patch)
tree18b5a2d16ac3fa8dd6d4528469725c216aed428c /include/net
parent036d6a673fa0a2e2c5b72a3b1d1b86114c1711c0 (diff)
tcp: fix ssthresh u16 leftover
It was once upon time so that snd_sthresh was a 16-bit quantity. ...That has not been true for long period of time. I run across some ancient compares which still seem to trust such legacy. Put all that magic into a single place, I hopefully found all of them. Compile tested, though linking of allyesconfig is ridiculous nowadays it seems. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/tcp.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h
index b71a446d58f..56b76027b85 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -793,6 +793,13 @@ static inline unsigned int tcp_packets_in_flight(const struct tcp_sock *tp)
return tp->packets_out - tcp_left_out(tp) + tp->retrans_out;
}
+#define TCP_INFINITE_SSTHRESH 0x7fffffff
+
+static inline bool tcp_in_initial_slowstart(const struct tcp_sock *tp)
+{
+ return tp->snd_ssthresh >= TCP_INFINITE_SSTHRESH;
+}
+
/* If cwnd > ssthresh, we may raise ssthresh to be half-way to cwnd.
* The exception is rate halving phase, when cwnd is decreasing towards
* ssthresh.