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John Heffner 5528e568a7 [TCP]: Fix snd_cwnd adjustments in tcp_highspeed.c 
Xiaoliang (David) Wei wrote:
> Hi gurus,
> 
>    I am reading the code of tcp_highspeed.c in the kernel and have a
> question on the hstcp_cong_avoid function, specifically the following
> AI part (line 136~143 in net/ipv4/tcp_highspeed.c ):
> 
>                /* Do additive increase */
>                if (tp->snd_cwnd < tp->snd_cwnd_clamp) {
>                        tp->snd_cwnd_cnt += ca->ai;
>                        if (tp->snd_cwnd_cnt >= tp->snd_cwnd) {
>                                tp->snd_cwnd++;
>                                tp->snd_cwnd_cnt -= tp->snd_cwnd;
>                        }
>                }
> 
>    In this part, when (tp->snd_cwnd_cnt == tp->snd_cwnd),
> snd_cwnd_cnt will be -1... snd_cwnd_cnt is defined as u16, will this
> small chance of getting -1 becomes a problem?
> Shall we change it by reversing the order of the cwnd++ and cwnd_cnt -= 
> cwnd?

Absolutely correct.  Thanks.

Signed-off-by: John Heffner <jheffner@psc.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-05-05 17:41:44 -07:00
..
802 [SNAP]: Remove leftover unused hdr variable 2006-03-20 22:45:37 -08:00
8021q [NET]: Replace skb_pull/skb_postpull_rcsum with skb_pull_rcsum 2006-03-20 22:43:56 -08:00
appletalk [NET]: Fix ipx/econet/appletalk/irda ioctl crashes 2006-03-28 17:02:43 -08:00
atm [ATM] clip: add module info 2006-04-14 16:01:26 -07:00
ax25 [AX.25]: Eleminate HZ from AX.25 kernel interfaces 2006-05-03 23:27:16 -07:00
bluetooth [BLUETOOTH] sco: Possible double free. 2006-04-09 22:25:29 -07:00
bridge [BRIDGE]: keep track of received multicast packets 2006-05-05 17:07:13 -07:00
core Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 2006-04-20 15:26:25 -07:00
dccp [DCCP]: Fix sock_orphan dead lock 2006-05-05 17:09:13 -07:00
decnet [DECNET]: Fix level1 router hello 2006-05-03 23:36:23 -07:00
econet [ECONET]: Convert away from SOCKOPS_WRAPPED 2006-03-28 17:02:43 -08:00
ethernet [NET] ethernet: Fix first packet goes out with MAC 00:00:00:00:00:00 2006-02-23 16:18:01 -08:00
ieee80211 [PATCH] softmac: fix SIOCSIWAP 2006-04-24 15:20:23 -04:00
ipv4 [TCP]: Fix snd_cwnd adjustments in tcp_highspeed.c 2006-05-05 17:41:44 -07:00
ipv6 [IPV6]: Fix race in route selection. 2006-04-29 18:33:22 -07:00
ipx [NET]: Fix ipx/econet/appletalk/irda ioctl crashes 2006-03-28 17:02:43 -08:00
irda [NET]: Fix ipx/econet/appletalk/irda ioctl crashes 2006-03-28 17:02:43 -08:00
key [NET] sem2mutex: net/ 2006-03-20 22:33:17 -08:00
lapb [NET]: Kill skb->list 2005-08-29 15:31:14 -07:00
llc [LLC]: Use pskb_trim_rcsum() in llc_fixup_skb(). 2006-04-19 15:37:13 -07:00
netfilter [NETFILTER]: x_tables: don't use __copy_{from,to}_user on unchecked memory in compat layer 2006-05-03 23:20:27 -07:00
netlink Merge branch 'audit.b10' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current 2006-05-01 21:43:05 -07:00
netrom [NETROM/ROSE]: Kill module init version kernel log messages. 2006-05-05 17:19:26 -07:00
packet [NET]: Fix some whitespace issues in af_packet.c 2006-01-23 16:28:02 -08:00
rose [NETROM/ROSE]: Kill module init version kernel log messages. 2006-05-05 17:19:26 -07:00
rxrpc [PATCH] fix 'defined but not used' warning in net/rxrpc/main.c::rxrpc_initialise 2006-03-25 08:22:52 -08:00
sched [PKT_SCHED] netem: fix loss 2006-04-29 18:33:12 -07:00
sctp [SCTP]: Fix state table entries for chunks received in CLOSED state. 2006-05-05 17:05:23 -07:00
sunrpc SUNRPC: Dead code in net/sunrpc/auth_gss/auth_gss.c 2006-04-19 13:06:49 -04:00
tipc [NET]: Remove redundant NULL checks before [kv]free 2006-04-18 15:57:55 -07:00
unix [PATCH] POLLRDHUP/EPOLLRDHUP handling for half-closed devices notifications 2006-03-25 08:22:56 -08:00
wanrouter [WAN]: Remove broken and unmaintained Sangoma drivers. 2006-04-11 17:28:33 -07:00
x25 [X25]: fix for spinlock recurse and spinlock lockup with timer handler 2006-04-29 18:33:11 -07:00
xfrm [XFRM]: fix incorrect xfrm_policy_afinfo_lock use 2006-04-29 18:33:21 -07:00
compat.c [NETFILTER]: iptables 32bit compat layer 2006-04-01 02:25:19 -08:00
Kconfig Merge branch 'master' 2006-02-07 01:47:12 -05:00
Makefile [TIPC] Initial merge 2006-01-12 14:06:31 -08:00
nonet.c [PATCH] Make most file operations structs in fs/ const 2006-03-28 09:16:06 -08:00
socket.c [PATCH] sockaddr patch 2006-05-01 06:06:10 -04:00
sysctl_net.c [NET]: Fix "sysctl_net.c:36: error: 'core_table' undeclared here" 2005-10-03 14:16:34 -07:00
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