pfring: improve error reporting at device opening

This patch improves the error message displayed if pfring_open fails.

diff --git a/src/source-pfring.c b/src/source-pfring.c
index 4dd40000a5085fd48cf352e54c53fdac3f506289..addeb50abe8e5a6bd077e5930350aacf9124c6a6 100644 (file)
--- a/src/source-pfring.c
+++ b/src/source-pfring.c
@@ -405,7 +405,9 @@ TmEcode ReceivePfringThreadInit(ThreadVars *tv, void *initdata, void **data) {
     ptv->pd = pfring_open(ptv->interface, LIBPFRING_PROMISC, (uint32_t)default_packet_size, LIBPFRING_REENTRANT);
 #endif
     if (ptv->pd == NULL) {
-        SCLogError(SC_ERR_PF_RING_OPEN,"opening %s failed: pfring_open error",
+        SCLogError(SC_ERR_PF_RING_OPEN,"Failed to open %s: pfring_open error."
+                " Check if %s exists and pf_ring module is loaded.",
+                ptv->interface,
                 ptv->interface);
         pfconf->DerefFunc(pfconf);
         return TM_ECODE_FAILED;