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authorHarald Welte <laforge@netfilter.org>2005-08-09 19:32:58 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2005-08-29 15:31:49 -0700
commit080774a243f56ce2195ace96fba3d18548ee48ce (patch)
tree2065041cb2b85891ca45648122122796122c38dc /net/netfilter/nfnetlink.c
parent6f1cf16582160c4839f05007c978743911aa022b (diff)
[NETFILTER]: Add ctnetlink subsystem
Add ctnetlink subsystem for userspace-access to ip_conntrack table. This allows reading and updating of existing entries, as well as creating new ones (and new expect's) via nfnetlink. Please note the 'strange' byte order: nfattr (tag+length) are in host byte order, while the payload is always guaranteed to be in network byte order. This allows a simple userspace process to encapsulate netlink messages into arch-independent udp packets by just processing/swapping the headers and not knowing anything about the actual payload. Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netfilter/nfnetlink.c')
-rw-r--r--net/netfilter/nfnetlink.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c
index 710acd77cc4c..b0ed57981847 100644
--- a/net/netfilter/nfnetlink.c
+++ b/net/netfilter/nfnetlink.c
@@ -121,6 +121,7 @@ void __nfa_fill(struct sk_buff *skb, int attrtype, int attrlen,
nfa->nfa_type = attrtype;
nfa->nfa_len = size;
memcpy(NFA_DATA(nfa), data, attrlen);
+ memset(NFA_DATA(nfa) + attrlen, 0, NFA_ALIGN(size) - size);
}
int nfattr_parse(struct nfattr *tb[], int maxattr, struct nfattr *nfa, int len)