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As Nicolas noticed in his case, when xfrm_interface module is installed the standard IP tunnels will break in receiving packets. This is caused by the IP tunnel handlers with a higher priority in xfrm interface processing incoming packets by xfrm_input(), which would drop the packets and return 0 instead when anything wrong happens. Rather than changing xfrm_input(), this patch is to adjust the priority for the IP tunnel handlers in xfrm interface, so that the packets would go to xfrmi's later than the others', as the others' would not drop the packets when the handlers couldn't process them. Note that IPCOMP also defines its own IPIP tunnel handler and it calls xfrm_input() as well, so we must make its priority lower than xfrmi's, which means having xfrmi loaded would still break IPCOMP. We may seek another way to fix it in xfrm_input() in the future. Reported-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Tested-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Fixes: |
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| .. | ||
| espintcp.c | ||
| Kconfig | ||
| Makefile | ||
| xfrm_algo.c | ||
| xfrm_device.c | ||
| xfrm_hash.c | ||
| xfrm_hash.h | ||
| xfrm_inout.h | ||
| xfrm_input.c | ||
| xfrm_interface.c | ||
| xfrm_ipcomp.c | ||
| xfrm_output.c | ||
| xfrm_policy.c | ||
| xfrm_proc.c | ||
| xfrm_replay.c | ||
| xfrm_state.c | ||
| xfrm_sysctl.c | ||
| xfrm_user.c | ||