net: ip_gre: use erspan key field for tunnel lookup
[ Upstream commit cb73ee40b1b381eaf3749e6dbeed567bb38e5258 ] Use ERSPAN key header field as tunnel key in gre_parse_header routine since ERSPAN protocol sets the key field of the external GRE header to 0 resulting in a tunnel lookup fail in ip6gre_err. In addition remove key field parsing and pskb_may_pull check in erspan_rcv and ip6erspan_rcv Fixes: 5a963eb6 ("ip6_gre: Add ERSPAN native tunnel support") Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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