Please sign in to comment.
netfilter: nf_conntrack: resolve clash for matching conntracks
This patch enables the clash resolution for NAT (disabled in "590b52e10d41") if clashing conntracks match (i.e. both tuples are equal) and a protocol allows it. The clash might happen for a connections-less protocol (e.g. UDP) when two threads in parallel writes to the same socket and consequent calls to "get_unique_tuple" return the same tuples (incl. reply tuples). In this case it is safe to perform the resolution, as the losing CT describes the same mangling as the winning CT, so no modifications to the packet are needed, and the result of rules traversal for the loser's packet stays valid. Signed-off-by: Martynas Pumputis <email@example.com> Signed-off-by: Pablo Neira Ayuso <firstname.lastname@example.org>
- Loading branch information...