of1x_instruction_pp.h

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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef __OF1X_INSTRUCTION_PP_H__
#define __OF1X_INSTRUCTION_PP_H__

#include <inttypes.h> 
#include <stdbool.h>
#include "rofl.h"
#include "../../../util/pp_guard.h" //Never forget to include the guard
#include "of1x_instruction.h"
#include "of1x_action_pp.h"

//C++ extern C
ROFL_BEGIN_DECLS

static inline bool  __of1x_process_instructions_must_replicate(const of1x_instruction_group_t* inst_grp){

        bool has_goto = inst_grp->instructions[OF1X_IT_GOTO_TABLE].type == OF1X_IT_GOTO_TABLE;
        unsigned int n_out = inst_grp->num_of_outputs; 

        return  ( (n_out == 1) && (has_goto) ) || ( n_out > 1); 
}

/* Process instructions */
static inline unsigned int __of1x_process_instructions(const unsigned int tid, const struct of1x_switch* sw, const unsigned int table_id, datapacket_t *const pkt, const of1x_instruction_group_t* instructions){

        of1x_instruction_t* inst = (of1x_instruction_t*)&instructions->instructions[OF1X_IT_APPLY_ACTIONS]; 

        //Check all instructions in order
        if(inst->type == OF1X_IT_APPLY_ACTIONS)
                __of1x_process_apply_actions(tid, sw, table_id, pkt, inst->apply_actions, __of1x_process_instructions_must_replicate(instructions), NULL); 

        //Next instruction
        inst++; 
        
        if(inst->type == OF1X_IT_CLEAR_ACTIONS)
                __of1x_clear_write_actions(&pkt->write_actions.of1x);

        //Next instruction
        inst++;
        
        if(inst->type == OF1X_IT_WRITE_ACTIONS)
                __of1x_update_packet_write_actions(&pkt->write_actions.of1x, inst->write_actions);
        
        //Next instruction
        inst++;
        
        if(inst->type == OF1X_IT_WRITE_METADATA){
                pkt->__metadata = (pkt->__metadata & ~inst->write_metadata.metadata_mask) |
                                (inst->write_metadata.metadata & inst->write_metadata.metadata_mask);
        }
        
        //Next instruction
        inst++;

        if(inst->type == OF1X_IT_EXPERIMENTER){
                //TODO:
        }
        
        //Next instruction
        inst++;

        if(inst->type == OF1X_IT_METER){
                //TODO:
        }
        
        //Next instruction (GOTO table)
        inst++;

        //Will be 0 (NO go-to-table) due to memset() of isntruction group
        return inst->go_to_table;
}

//C++ extern C
ROFL_END_DECLS

#endif //OF1X_INSTRUCTION_PP