ARM: net: handle negative offsets in BPF JIT.
Previously, the JIT would reject negative offsets known during code generation and mishandle negative offsets provided at runtime. Fix that by calling bpf_internal_load_pointer_neg_helper() appropriately in the jit_get_skb_{b,h,w} slow path helpers and by forcing the execution flow to the slow path helpers when the offset is negative. Signed-off-by:Nicolas Schichan <nschichan@freebox.fr> Signed-off-by:
David S. Miller <davem@davemloft.net>
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