Commits on May 3, 2023

1. bpf: refactor the BPF code and postpone querying of the engine mode …

   BPF codebase queried engine mode earlier than it was determined from
   the configuration file/command line. As a result it used the default (IDS)
   mode where it could've been configured later on to the IPS mode.
   This could lead into an undefined behavior as some Suricata modules behave
   according to the engine mode.
   
   PF-Ring, Netmap and AF-Packet all shared almost identical code for
   determining the engine mode. It was put into one common function.
   Omitted the usage of SCStrdup function in PF-Ring module as it is
   uppercased during thread initialization phase.
   
   Ticket: OISF#5958

   

   Lukas Sismis authored and lukashino committed May 3, 2023
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2. runmodes: earlier evaluation of IPS mode …

   Move evaluation of engine runmode to an earlier
   phase so that dependend modules rely on properly
   configured engine runmode.
   
   Ticket: OISF#5958

   

   Lukas Sismis authored and lukashino committed May 3, 2023
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3. runmodes: introduce unknown engine runmode …

   To prevent unset values of engine runmode,
   this commit introduces unknown runmode which
   can detect when engine runmode is being used
   uninitialized.
   
   Ticket: OISF#6033

   

   Lukas Sismis authored and lukashino committed May 3, 2023
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