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llc: Don't drop packet from non-root netns.
[ Upstream commit 6631463b6e6673916d2481f692938f393148aa82 ] Now these upper layer protocol handlers can be called from llc_rcv() as sap->rcv_func(), which is registered by llc_sap_open(). * function which is passed to register_8022_client() -> no in-kernel user calls register_8022_client(). * snap_rcv() `- proto->rcvfunc() : registered by register_snap_client() -> aarp_rcv() and atalk_rcv() drop packets from non-root netns * stp_pdu_rcv() `- garp_protos[]->rcv() : registered by stp_proto_register() -> garp_pdu_rcv() and br_stp_rcv() are netns-aware So, we can safely remove the netns restriction in llc_rcv(). Fixes: e730c15 ("[NET]: Make packet reception network namespace safe") Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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