diff options
| author | andre <andre@FreeBSD.org> | 2003-11-20 20:07:39 +0000 |
|---|---|---|
| committer | andre <andre@FreeBSD.org> | 2003-11-20 20:07:39 +0000 |
| commit | 6164d7c280688f20cf827e8374984c6e0175fab0 (patch) | |
| tree | f947a08d66395dd498056038f0c360783fa281c7 /sys/netinet/in_pcb.h | |
| parent | 6dca20de0718f19b3cdc5a7d5ebb71cd54b2374e (diff) | |
| download | FreeBSD-src-6164d7c280688f20cf827e8374984c6e0175fab0.zip FreeBSD-src-6164d7c280688f20cf827e8374984c6e0175fab0.tar.gz | |
Introduce tcp_hostcache and remove the tcp specific metrics from
the routing table. Move all usage and references in the tcp stack
from the routing table metrics to the tcp hostcache.
It caches measured parameters of past tcp sessions to provide better
initial start values for following connections from or to the same
source or destination. Depending on the network parameters to/from
the remote host this can lead to significant speedups for new tcp
connections after the first one because they inherit and shortcut
the learning curve.
tcp_hostcache is designed for multiple concurrent access in SMP
environments with high contention and is hash indexed by remote
ip address.
It removes significant locking requirements from the tcp stack with
regard to the routing table.
Reviewed by: sam (mentor), bms
Reviewed by: -net, -current, core@kame.net (IPv6 parts)
Approved by: re (scottl)
Diffstat (limited to 'sys/netinet/in_pcb.h')
| -rw-r--r-- | sys/netinet/in_pcb.h | 19 |
1 files changed, 3 insertions, 16 deletions
diff --git a/sys/netinet/in_pcb.h b/sys/netinet/in_pcb.h index 8a6717c..5e93328 100644 --- a/sys/netinet/in_pcb.h +++ b/sys/netinet/in_pcb.h @@ -94,31 +94,22 @@ struct in_endpoints { /* * XXX - * At some point struct route should possibly change to: - * struct rtentry *rt - * struct in_endpoints *ie; + * the defines for inc_* are hacks and should be changed to direct references */ struct in_conninfo { u_int8_t inc_flags; u_int8_t inc_len; u_int16_t inc_pad; /* XXX alignment for in_endpoints */ - /* protocol dependent part; cached route */ + /* protocol dependent part */ struct in_endpoints inc_ie; - union { - /* placeholder for routing entry */ - struct route inc4_route; - struct route_in6 inc6_route; - } inc_dependroute; }; #define inc_isipv6 inc_flags /* temp compatability */ #define inc_fport inc_ie.ie_fport #define inc_lport inc_ie.ie_lport #define inc_faddr inc_ie.ie_faddr #define inc_laddr inc_ie.ie_laddr -#define inc_route inc_dependroute.inc4_route #define inc6_faddr inc_ie.ie6_faddr #define inc6_laddr inc_ie.ie6_laddr -#define inc6_route inc_dependroute.inc6_route struct icmp6_filter; @@ -157,7 +148,6 @@ struct inpcb { #define inp_lport inp_inc.inc_lport #define inp_faddr inp_inc.inc_faddr #define inp_laddr inp_inc.inc_laddr -#define inp_route inp_inc.inc_route #define inp_ip_tos inp_depend4.inp4_ip_tos #define inp_options inp_depend4.inp4_options #define inp_moptions inp_depend4.inp4_moptions @@ -182,7 +172,7 @@ struct inpcb { #define in6p_faddr inp_inc.inc6_faddr #define in6p_laddr inp_inc.inc6_laddr -#define in6p_route inp_inc.inc6_route +#define in6p_ip6_hlim inp_depend6.inp6_hlim #define in6p_hops inp_depend6.inp6_hops /* default hop limit */ #define in6p_ip6_nxt inp_ip_p #define in6p_flowinfo inp_flow @@ -347,9 +337,6 @@ extern int ipport_hifirstauto; extern int ipport_hilastauto; void in_pcbpurgeif0(struct inpcbinfo *, struct ifnet *); -void in_losing(struct inpcb *); -struct inpcb * - in_rtchange(struct inpcb *, int); int in_pcballoc(struct socket *, struct inpcbinfo *, struct thread *); int in_pcbbind(struct inpcb *, struct sockaddr *, struct thread *); int in_pcbbind_setup(struct inpcb *, struct sockaddr *, in_addr_t *, |
