bpf: sync bpf.h to tools infrastructure
Pull in updates in BPF helper function description. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -1466,8 +1466,8 @@ union bpf_attr {
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* If no cookie has been set yet, generate a new cookie. Once
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* If no cookie has been set yet, generate a new cookie. Once
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* generated, the socket cookie remains stable for the life of the
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* generated, the socket cookie remains stable for the life of the
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* socket. This helper can be useful for monitoring per socket
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* socket. This helper can be useful for monitoring per socket
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* networking traffic statistics as it provides a unique socket
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* networking traffic statistics as it provides a global socket
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* identifier per namespace.
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* identifier that can be assumed unique.
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* Return
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* Return
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* A 8-byte long non-decreasing number on success, or 0 if the
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* A 8-byte long non-decreasing number on success, or 0 if the
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* socket field is missing inside *skb*.
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* socket field is missing inside *skb*.
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@ -1571,8 +1571,11 @@ union bpf_attr {
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* but this is only implemented for native XDP (with driver
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* but this is only implemented for native XDP (with driver
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* support) as of this writing).
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* support) as of this writing).
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*
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*
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* All values for *flags* are reserved for future usage, and must
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* The lower two bits of *flags* are used as the return code if
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* be left at zero.
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* the map lookup fails. This is so that the return value can be
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* one of the XDP program return codes up to XDP_TX, as chosen by
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* the caller. Any higher bits in the *flags* argument must be
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* unset.
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*
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*
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* When used to redirect packets to net devices, this helper
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* When used to redirect packets to net devices, this helper
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* provides a high performance increase over **bpf_redirect**\ ().
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* provides a high performance increase over **bpf_redirect**\ ().
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