chore: make completion error outputs more descriptive

Output description string of WC error status directly, which makes it easier for users
to get the reasons (e.g. retry counter exceeded) without needing to refer to the codes.

Signed-off-by: Shady Chan <[email protected]>

Author: shadychan

src/perftest_resources.h

@@ -105,12 +105,14 @@
 
 #define NOTIFY_COMP_ERROR_SEND(wc,scnt,ccnt)                     											\
 	{ fprintf(stderr," Completion with error at client\n");      											\
-	  fprintf(stderr," Failed status %d: wr_id %d syndrom 0x%x\n",wc.status,(int) wc.wr_id,wc.vendor_err);	\
-	  fprintf(stderr, "scnt=%lu, ccnt=%lu\n",scnt, ccnt); }
+	  fprintf(stderr," Failed status-%s (%d): wr_id %d syndrom 0x%x\n",      								\
+	          ibv_wc_status_str(wc.status),wc.status,(int) wc.wr_id,wc.vendor_err);      					\
+	  fprintf(stderr," scnt=%lu, ccnt=%lu\n",scnt, ccnt); }
 
 #define NOTIFY_COMP_ERROR_RECV(wc,rcnt)                     											    \
 	{ fprintf(stderr," Completion with error at server\n");      											\
-	  fprintf(stderr," Failed status %d: wr_id %d syndrom 0x%x\n",wc.status,(int) wc.wr_id,wc.vendor_err);	\
+	  fprintf(stderr," Failed status-%s (%d): wr_id %d syndrom 0x%x\n",      								\
+	          ibv_wc_status_str(wc.status),wc.status,(int) wc.wr_id,wc.vendor_err);      					\
 	  fprintf(stderr," rcnt=%lu\n",rcnt); }
 
 /* Macro to determine packet size in case of UD. The UD addition is for the GRH . */