decode packets

[rsbs2] / bmc / bmc.c

diff --git a/bmc/bmc.c b/bmc/bmc.c
index 4a7f02f489b2f45df33fee5e7ecf5876fc28efce..4db28a6fab3cb2c9408a38f7b39dcdd6da8cdc55 100644 (file)
--- a/bmc/bmc.c
+++ b/bmc/bmc.c
@@ -6,15 +6,40 @@
 #include "i2c.h"
 #include "bmc.h"
 
-void decode_bmc_cmd(unsigned char *buf, int len)
+uint8_t ipmb_csum(unsigned char *buf, int len)
 {
+       uint8_t csum = 0x00;
        int i;
 
        for(i = 0; i < len; i++) {
-               printf("0x%02x ", buf[i]);
+               csum += buf[i];
        }
 
+       return -csum;
+}
+
+void decode_bmc_cmd(unsigned char *buf, int len)
+{
+       int i;
+
+       printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
+       printf("Connection Header:\n");
+       printf("\trs Slave Addr.: 0x%02x\n", buf[0]);
+       printf("\tnetFn: 0x%02x, LUN: 0x%02x\n", (buf[1]>>2)&0x3f, (buf[1] & 0x03));
+       printf("\tChecksum: 0x%02x (%s)\n", buf[2],
+               (buf[2] == ipmb_csum(buf, 2)) ? "OK" : "Wrong");
+       printf("Data:\n");
+       printf("\trq Slave Addr.: 0x%02x\n", buf[3]);
+       printf("\trqSeq: 0x%02x, rqLUN: 0x%02x\n", (buf[4]>>2)&0x3f, (buf[4] & 0x03));
+       printf("\tcmd: 0x%02x\n", buf[5]);
+       printf("\tData: ");
+       for(i = 6; i < (len - 1); i++) {
+               printf("0x%02x ", buf[i]);
+       }
        printf("\n");
+       printf("\tChecksum: 0x%02x (%s)\n", buf[len-1],
+               (buf[len-1] == ipmb_csum(buf+3, len-4)) ? "OK" : "Wrong");
+       printf("<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n");
 }
 
 int main(void)