Begin to write defines for netpfga instead of actions

doc/plan.org

@@ -6577,7 +6577,8 @@ Compiler Bug: actions_egress.p4(89): unhandled expression realmain_controller_de
 
 
 #+END_CENTER
-*** TODO 2019-07-24: BUG unhandled node: <IfStatement>(471564)
+*** DONE 2019-07-24: BUG unhandled node: <IfStatement>(471564)
+    CLOSED: [2019-07-24 Wed 23:34]
     - Removing the call to " delta_udp_from_v6_to_v4()" fixes the
       problem.
     - Calling v4sum() only works

p4src/actions_delta_checksum.p4

@@ -68,8 +68,28 @@ action delta_udp_from_v4_to_v6()
     hdr.udp.checksum = (bit<16>) tmp;
 }
 
+#ifdef _SUME_SWITCH_P4_
 #define delta_udp_from_v6_to_v4 delta_prepare (); tmp17 = (bit<17>) hdr.udp.checksum + (bit<17>) meta.v4sum; if (tmp17[16:16] == 1) { tmp17 = tmp17 + 1; tmp17[16:16] = 0; } tmp17 = tmp17 + (bit<17>) (0xffff - meta.v6sum); if (tmp17[16:16] == 1) { tmp17 = tmp17 + 1; tmp17[16:16] = 0; }  hdr.udp.checksum = (bit<16>) tmp17;
+#define delta_tcp_from_v6_to_v4 delta_prepare (); tmp17 = (bit<17>) hdr.tcp.checksum + (bit<17>) meta.v4sum; if (tmp17[16:16] == 1) { tmp17 = tmp17 + 1; tmp17[16:16] = 0; } tmp17 = tmp17 + (bit<17>) (0xffff - meta.v6sum); if (tmp17[16:16] == 1) { tmp17 = tmp17 + 1; tmp17[16:16] = 0; }  hdr.tcp.checksum = (bit<16>) tmp17;
 
+#else
+action delta_udp_from_v6_to_v4()
+{
+    delta_prepare();
+
+    bit<17> tmp = (bit<17>) hdr.udp.checksum + (bit<17>) meta.v4sum;
+    if (tmp[16:16] == 1) {
+        tmp = tmp + 1;
+        tmp[16:16] = 0;
+    }
+    tmp = tmp + (bit<17>) (0xffff - meta.v6sum);
+    if (tmp[16:16] == 1) {
+        tmp = tmp + 1;
+        tmp[16:16] = 0;
+    }
+
+    hdr.udp.checksum = (bit<16>) tmp;
+}
 
 action delta_tcp_from_v4_to_v6()
 {
@@ -88,6 +108,7 @@ action delta_tcp_from_v4_to_v6()
 
     hdr.tcp.checksum = (bit<16>) tmp;
 }
+#endif
 
 action delta_tcp_from_v6_to_v4()
 {
@@ -122,31 +143,14 @@ action delta_ipv4_from_v6_to_v4()
                 ( ((bit<16>) hdr.ipv4.diff_serv) << 2)  +
                 ( (bit<16>) hdr.ipv4.ecn);
     tmp = tmp + shift_tmp;
-
-    // tmp = tmp + (bit<16>) hdr.ipv4.version;          /* 4 bit */
-	// tmp = tmp + (bit<16>) hdr.ipv4.ihl;              /* 4 bit */
-    // tmp = tmp + (bit<16>) hdr.ipv4.diff_serv;        /* 6 bit */
-    // tmp = tmp + (bit<16>) hdr.ipv4.ecn;              /* 2 bit */
-
-
     tmp = tmp + (bit<16>) hdr.ipv4.totalLen;         /* 16 bit */
-
     tmp = tmp + (bit<16>) hdr.ipv4.identification;   /* 16 bit */
-
     shift_tmp = ((bit<16>) (hdr.ipv4.flags) << 13) +
                 ((bit<16>) hdr.ipv4.fragOffset);
     tmp = tmp + shift_tmp;
-
-    // tmp = tmp + (bit<16>) hdr.ipv4.flags;            /* 3 bit */
-    // tmp = tmp + (bit<16>) hdr.ipv4.fragOffset;       /* 13 bit */
-
     shift_tmp = ((bit<16>) (hdr.ipv4.ttl) << 8) +
                 ((bit<16>) hdr.ipv4.protocol);
     tmp = tmp + shift_tmp;
-
-    // tmp = tmp + (bit<16>) hdr.ipv4.ttl;              /* 8 bit */
-    // tmp = tmp + (bit<16>) hdr.ipv4.protocol;         /* 8 bit */
-
     tmp = tmp + (bit<16>) hdr.ipv4.src_addr[15:0];    /* 16 bit */
     tmp = tmp + (bit<16>) hdr.ipv4.src_addr[31:16];   /* 16 bit */
     tmp = tmp + (bit<16>) hdr.ipv4.dst_addr[15:0];    /* 16 bit */

p4src/minip4_solution.p4

@@ -2,33 +2,10 @@
 #include <sume_switch.p4>
 #include "headers.p4"
 
-/* required for netfpga */
-#define USE_NICO_DELTA_CHECKSUM 1
-
-
-// typedef bit<48> EthAddr_t;
-// header Ethernet_h {
-//     EthAddr_t dstAddr;
-//     EthAddr_t srcAddr;
-//     bit<16> etherType;
-// }
-
-//typedef struct headers Parsed_packet;
-
 #define Parsed_packet headers
 #define user_metadata_t metadata
 
-//struct Parsed_packet {
+// digest_data, MUST be 256 bits -- not using it
-//    Ethernet_h ethernet;
-//}
-
-// user defined metadata: can be used to share information between
-// TopParser, TopPipe, and TopDeparser
-//struct user_metadata_t {
-//    bit<8>  unused;
-//}
-
-// digest_data, MUST be 256 bits -- what is this used for?
 struct digest_data_t {
     bit<256> unused;
 }
@@ -127,6 +104,7 @@ control RealMain(
     }
 
     apply {
+        bit<17> tmp17 = 0;
         if(hdr.ipv6.isValid()) {
             if(nat64.apply().hit) { /* generic / static nat64 done */
                 if(hdr.icmp6.isValid()) {
@@ -143,20 +121,12 @@ control RealMain(
                 }
 
                 if(hdr.udp.isValid()) {
-                    bit<17> tmp17 = 0;
-                    //delta_prepare();
-                    //delta_udp_from_v6_to_v4();
-                    //stupid();
                     delta_udp_from_v6_to_v4
                 }
-                // if(hdr.tcp.isValid()) {
-                //     #ifdef USE_NICO_DELTA_CHECKSUM
-                //     delta_tcp_from_v6_to_v4();
-                //     #else
 
-                //     meta.chk_tcp_v4 = 1;
+                if(hdr.tcp.isValid()) {
-                //     #endif
+                    delta_tcp_from_v6_to_v4
-                // }
+                }
 
                 v4_networks.apply();       /* apply egress for IPv4 */
                 exit;                      /* no further v6 processing */