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fix bug: offset is outside of the packet. #136

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fix bug: offset is outside of the packet. #136

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2 changes: 1 addition & 1 deletion packet01-parsing/xdp_prog_kern.c
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Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,7 @@ static __always_inline int parse_ethhdr(struct hdr_cursor *nh,
/* Byte-count bounds check; check if current pointer + size of header
* is after data_end.
*/
if (nh->pos + 1 > data_end)
if (nh->pos + hdrsize > data_end)
return -1;

nh->pos += hdrsize;
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