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| author | Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> | 2008-10-07 14:43:06 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-10-07 14:43:06 -0700 |
| commit | 33f5f57eeb0c6386fdd85f9c690dc8d700ba7928 (patch) | |
| tree | 4bd3421bfa3088018f8e355e6f47e43599748802 /include/linux | |
| parent | 654bed16cf86a9ef94495d9e6131b7ff7840a3dd (diff) | |
| download | op-kernel-dev-33f5f57eeb0c6386fdd85f9c690dc8d700ba7928.zip op-kernel-dev-33f5f57eeb0c6386fdd85f9c690dc8d700ba7928.tar.gz | |
tcp: kill pointless urg_mode
It all started from me noticing that this urgent check in
tcp_clean_rtx_queue is unnecessarily inside the loop. Then
I took a longer look to it and found out that the users of
urg_mode can trivially do without, well almost, there was
one gotcha.
Bonus: those funny people who use urg with >= 2^31 write_seq -
snd_una could now rejoice too (that's the only purpose for the
between being there, otherwise a simple compare would have done
the thing). Not that I assume that the rest of the tcp code
happily lives with such mind-boggling numbers :-). Alas, it
turned out to be impossible to set wmem to such numbers anyway,
yes I really tried a big sendfile after setting some wmem but
nothing happened :-). ...Tcp_wmem is int and so is sk_sndbuf...
So I hacked a bit variable to long and found out that it seems
to work... :-)
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/tcp.h | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 7672906..fe77e14 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -312,8 +312,11 @@ struct tcp_sock { u32 retrans_out; /* Retransmitted packets out */ u16 urg_data; /* Saved octet of OOB data and control flags */ - u8 urg_mode; /* In urgent mode */ u8 ecn_flags; /* ECN status bits. */ + u8 reordering; /* Packet reordering metric. */ + u32 snd_up; /* Urgent pointer */ + + u8 keepalive_probes; /* num of allowed keep alive probes */ /* * Options received (usually on last packet, some only on SYN packets). */ @@ -361,8 +364,6 @@ struct tcp_sock { u32 lost_retrans_low; /* Sent seq after any rxmit (lowest) */ - u8 reordering; /* Packet reordering metric. */ - u8 keepalive_probes; /* num of allowed keep alive probes */ u32 prior_ssthresh; /* ssthresh saved at recovery start */ u32 high_seq; /* snd_nxt at onset of congestion */ @@ -374,8 +375,6 @@ struct tcp_sock { u32 total_retrans; /* Total retransmits for entire connection */ u32 urg_seq; /* Seq of received urgent pointer */ - u32 snd_up; /* Urgent pointer */ - unsigned int keepalive_time; /* time before keep alive takes place */ unsigned int keepalive_intvl; /* time interval between keep alive probes */ |
