lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Message-ID: <54DDC8B1.1050307@windriver.com> Date: Fri, 13 Feb 2015 17:49:37 +0800 From: yzhu1 <Yanjun.Zhu@...driver.com> To: Fan Du <fan.du@...el.com>, <davem@...emloft.net> CC: <netdev@...r.kernel.org>, <fengyuleidian0615@...il.com> Subject: Re: [PATCH net-next 1/3] ipv4: Raise tcp PMTU probe mss base size backward compatible? :-D Zhu Yanjun On 02/13/2015 04:16 PM, Fan Du wrote: > Quotes from RFC4821 7.2. Selecting Initial Values > > It is RECOMMENDED that search_low be initially set to an MTU size > that is likely to work over a very wide range of environments. Given > today's technologies, a value of 1024 bytes is probably safe enough. > The initial value for search_low SHOULD be configurable. > > Moreover, set a small value will introduce extra time for the search > to converge. So set the initial probe base mss size to 1024 Bytes. > > Signed-off-by: Fan Du <fan.du@...el.com> > --- > include/net/tcp.h | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/include/net/tcp.h b/include/net/tcp.h > index 8d6b983..7b57e5b 100644 > --- a/include/net/tcp.h > +++ b/include/net/tcp.h > @@ -65,7 +65,7 @@ void tcp_time_wait(struct sock *sk, int state, int timeo); > #define TCP_MIN_MSS 88U > > /* The least MTU to use for probing */ > -#define TCP_BASE_MSS 512 > +#define TCP_BASE_MSS 1024 > > /* After receiving this amount of duplicate ACKs fast retransmit starts. */ > #define TCP_FASTRETRANS_THRESH 3 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists