[dpdk-users] Flow director struct rte_flow_item_raw guild
曾懷恩
the at csie.io
Thu May 9 04:01:22 CEST 2019
Hi,
I have a few questions about structure rte_flow_item_raw.
In DPDK API doc, it shows there are some below elements in this structure
uint32_t relative:1
uint32_t search:1
uint32_t reserved:30
int32_t offset
uint16_t limit
uint16_t length
const uint8_t * pattern
Now I can understand the relative and search elements are used to determine search type.
The offset element is used to set the start search point in packet.
The limit element is used to set the end search point in packet.
However, I can’t understand what the pattern element is used to?
What kind of pointer should I assign to the pattern element?
Besides, in other rte_flow_item_* structures, there are clearly elements to let user to set contents and masks.
How do I do in the structure rte_flow_item_raw?
Thanks a lot,
Best Regards,
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