rxrpc: Use the core ICMP/ICMP6 parsers

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Make rxrpc_encap_rcv_err() pass the ICMP/ICMP6 skbuff to ip_icmp_error() or
ipv6_icmp_error() as appropriate to do the parsing rather than trying to do
it in rxrpc.

This pushes an error report onto the UDP socket's error queue and calls
->sk_error_report() from which point rxrpc can pick it up.

It would be preferable to steal the packet directly from ip*_icmp_error()
rather than letting it get queued, but this is probably good enough.

Also note that __udp4_lib_err() calls sk_error_report() twice in some
cases.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

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This commit is contained in:

David Howells 2022-10-12 09:51:12 +01:00

parent 42fb06b391

commit b6c66c4324

3 changed files with 42 additions and 217 deletions

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1

net/rxrpc/ar-internal.h

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13

net/rxrpc/local_object.c

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247

net/rxrpc/peer_event.c

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