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c8b17be0b7
This patch adds the skbuff fraglist splitter. This API provides an iterator to transform the fraglist into single skbuff objects, it consists of: * ip_fraglist_init(), that initializes the internal state of the fraglist splitter. * ip_fraglist_prepare(), that restores the IPv4 header on the fragments. * ip_fraglist_next(), that retrieves the fragment from the fraglist and it updates the internal state of the splitter to point to the next fragment skbuff in the fraglist. The ip_fraglist_iter object stores the internal state of the iterator. This code has been extracted from ip_do_fragment(). Symbols are also exported to allow to reuse this iterator from the bridge codepath to build its own refragmentation routine by reusing the existing codebase. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>