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| author | jayanth <jayanth@FreeBSD.org> | 2000-07-21 23:26:37 +0000 |
|---|---|---|
| committer | jayanth <jayanth@FreeBSD.org> | 2000-07-21 23:26:37 +0000 |
| commit | 8c2fae53742ffaf1871be8c56947b9ac306af564 (patch) | |
| tree | 2f611787ca557e2258deb0760e8546f691acd9c6 /sys/net/route.h | |
| parent | 9ed7fa2a25f71339ba2c167377581dec855bbbe4 (diff) | |
| download | FreeBSD-src-8c2fae53742ffaf1871be8c56947b9ac306af564.zip FreeBSD-src-8c2fae53742ffaf1871be8c56947b9ac306af564.tar.gz | |
When a connection is being dropped due to a listen queue overflow,
delete the cloned route that is associated with the connection.
This does not exhaust the routing table memory when the system
is under a SYN flood attack. The route entry is not deleted if there
is any prior information cached in it.
Reviewed by: Peter Wemm,asmodai
Diffstat (limited to 'sys/net/route.h')
| -rw-r--r-- | sys/net/route.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/net/route.h b/sys/net/route.h index c9c5c3f..c5642a4 100644 --- a/sys/net/route.h +++ b/sys/net/route.h @@ -139,7 +139,7 @@ struct ortentry { #define RTF_DYNAMIC 0x10 /* created dynamically (by redirect) */ #define RTF_MODIFIED 0x20 /* modified dynamically (by redirect) */ #define RTF_DONE 0x40 /* message confirmed */ -/* 0x80 unused */ +#define RTF_DELCLONE 0x80 /* delete cloned route */ #define RTF_CLONING 0x100 /* generate new routes on use */ #define RTF_XRESOLVE 0x200 /* external daemon resolves name */ #define RTF_LLINFO 0x400 /* generated by link layer (e.g. ARP) */ |
