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| author | glebius <glebius@FreeBSD.org> | 2005-06-27 07:36:02 +0000 |
|---|---|---|
| committer | glebius <glebius@FreeBSD.org> | 2005-06-27 07:36:02 +0000 |
| commit | c6e57e046e743ecb35b9a7c48c8fb5e6d30b6ac1 (patch) | |
| tree | 31bc69409e5f746eb4521a8499f88fae66f48cbb /sys/netinet/libalias/alias_ftp.c | |
| parent | 49d602bcb1eba547fdc15540603f3f9303f3418a (diff) | |
| download | FreeBSD-src-c6e57e046e743ecb35b9a7c48c8fb5e6d30b6ac1.zip FreeBSD-src-c6e57e046e743ecb35b9a7c48c8fb5e6d30b6ac1.tar.gz | |
Disable checksum processing in LibAlias, when it works as a
kernel module. LibAlias is not aware about checksum offloading,
so the caller should provide checksum calculation. (The only
current consumer is ng_nat(4)). When TCP packet internals has
been changed and it requires checksum recalculation, a cookie
is set in th_x2 field of TCP packet, to inform caller that it
needs to recalculate checksum. This ugly hack would be removed
when LibAlias is made more kernel friendly.
Incremental checksum updates are left as is, since they don't
conflict with offloading.
Approved by: re (scottl)
Diffstat (limited to 'sys/netinet/libalias/alias_ftp.c')
| -rw-r--r-- | sys/netinet/libalias/alias_ftp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/netinet/libalias/alias_ftp.c b/sys/netinet/libalias/alias_ftp.c index 2eb8859..d91e1cd 100644 --- a/sys/netinet/libalias/alias_ftp.c +++ b/sys/netinet/libalias/alias_ftp.c @@ -677,7 +677,11 @@ NewFtpMessage(struct libalias *la, struct ip *pip, /* Compute TCP checksum for revised packet */ tc->th_sum = 0; +#ifdef _KERNEL + tc->th_x2 = 1; +#else tc->th_sum = TcpChecksum(pip); +#endif } else { #ifdef LIBALIAS_DEBUG fprintf(stderr, |
