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flow: Record the pifs for each side of each flow

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Currently we have no generic information flows apart from the type and
state, everything else is specific to the flow type.  Start introducing
generic flow information by recording the pifs which the flow connects.

To keep track of what information is valid, introduce new flow states:
INI for when the initiating side information is complete, and TGT for
when both sides information is complete, but we haven't chosen the
flow type yet.  For now, these states don't do an awful lot, but
they'll become more important as we add more generic information.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
David Gibson
2024-05-21 15:57:07 +10:00
committed by Stefano Brivio
parent 43571852e6
commit 8a2accb847
7 changed files with 109 additions and 16 deletions
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3
flow_table.h
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@@ -107,6 +107,9 @@ static inline flow_sidx_t flow_sidx(const struct flow_common *f,
union flow *flow_alloc(void);
void flow_alloc_cancel(union flow *flow);
void flow_initiate(union flow *flow, uint8_t pif);
void flow_target(union flow *flow, uint8_t pif);
union flow *flow_set_type(union flow *flow, enum flow_type type);
#define FLOW_SET_TYPE(flow_, t_, var_) (&flow_set_type((flow_), (t_))->var_)