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Commit f78a1b38 authored by Ilpo Järvinen's avatar Ilpo Järvinen Committed by David S. Miller
Browse files

[TCP]: Make snd_cwnd_cnt 32-bit 

Very little point of having 32-bit snd_cnwd if this is not
32-bit as well, as a number of snd_cwnd incrementation formulas
assume that snd_cwnd_cnt can be at least as large as snd_cwnd.

Whether 32-bit is useful was discussed when e0ef57cc
was made:
  http://marc.info/?l=linux-netdev&m=117218144409825&w=2



Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d603d0ab

include/linux/tcp.h

+1 −1
Original line number Diff line number Diff line
@@ -315,7 +315,7 @@ struct tcp_sock { 
 */

 	u32	snd_ssthresh;	/* Slow start size threshold		*/

 	u32	snd_cwnd;	/* Sending congestion window		*/

 	u16	snd_cwnd_cnt;	/* Linear increase counter		*/

	u32	snd_cwnd_cnt;	/* Linear increase counter		*/

	u32	snd_cwnd_clamp; /* Do not allow snd_cwnd to grow above this */

	u32	snd_cwnd_used;

	u32	snd_cwnd_stamp;