runmodes: let thread count callback return uint16_t

It will be a long time before we need more than 64k threads.

Update capture methods.

src/runmode-af-packet.c

@@ -253,7 +253,7 @@ static void *ParseAFPConfig(const char *iface)
             if (strcmp(threadsstr, "auto") == 0) {
                 aconf->threads = 0;
             } else {
-                if (StringParseInt32(&aconf->threads, 10, 0, (const char *)threadsstr) < 0) {
+                if (StringParseUint16(&aconf->threads, 10, 0, (const char *)threadsstr) < 0) {
                     SCLogWarning("%s: invalid number of "
                                  "threads, resetting to default",
                             iface);
@@ -668,15 +668,15 @@ finalize:
     if (aconf->threads == 0) {
         /* for cluster_flow use core count */
         if (cluster_type == PACKET_FANOUT_HASH) {
-            aconf->threads = (int)UtilCpuGetNumProcessorsOnline();
+            aconf->threads = UtilCpuGetNumProcessorsOnline();
             SCLogPerf("%s: cluster_flow: %u cores, using %u threads", iface, aconf->threads,
                     aconf->threads);
 
             /* for cluster_qm use RSS queue count */
         } else if (cluster_type == PACKET_FANOUT_QM) {
             int rss_queues = GetIfaceRSSQueuesNum(iface);
-            if (rss_queues > 0) {
+            if (rss_queues > 0 && rss_queues <= UINT16_MAX) {
-                aconf->threads = rss_queues;
+                aconf->threads = (uint16_t)rss_queues;
                 SCLogPerf("%s: cluster_qm: %d RSS queues, using %u threads", iface, rss_queues,
                         aconf->threads);
             }
@@ -771,7 +771,7 @@ finalize:
     return aconf;
 }
 
-static int AFPConfigGeThreadsCount(void *conf)
+static uint16_t AFPConfigGeThreadsCount(void *conf)
 {
     AFPIfaceConfig *afp = (AFPIfaceConfig *)conf;
     return afp->threads;

src/runmode-af-xdp.c

@@ -123,17 +123,12 @@ static TmEcode ConfigSetThreads(AFXDPIfaceConfig *aconf, const char *entry_str)
         SCReturnInt(TM_ECODE_OK);
     }
 
-    if (StringParseInt32(&aconf->threads, 10, 0, entry_str) < 0) {
+    if (StringParseUint16(&aconf->threads, 10, 0, entry_str) < 0) {
         SCLogError("Threads entry for interface %s contain non-numerical characters - \"%s\"",
                 aconf->iface, entry_str);
         SCReturnInt(TM_ECODE_FAILED);
     }
 
-    if (aconf->threads < 0) {
-        SCLogError("Interface %s has a negative number of threads", aconf->iface);
-        SCReturnInt(TM_ECODE_FAILED);
-    }
-
     if (aconf->threads > nr_queues) {
         SCLogWarning(
                 "Selected threads greater than configured queues, using: %d thread(s)", nr_queues);
@@ -306,7 +301,7 @@ finalize:
     return aconf;
 }
 
-static int AFXDPConfigGetThreadsCount(void *conf)
+static uint16_t AFXDPConfigGetThreadsCount(void *conf)
 {
     if (conf == NULL)
         FatalError("Configuration file is NULL");

src/runmode-dpdk.c

@@ -1853,7 +1853,7 @@ static void *ParseDpdkConfigAndConfigureDevice(const char *iface)
  * \return a DPDKIfaceConfig corresponding to the interface name
  */
 
-static int DPDKConfigGetThreadsCount(void *conf)
+static uint16_t DPDKConfigGetThreadsCount(void *conf)
 {
     if (conf == NULL)
         FatalError("Configuration file is NULL");

src/runmode-erf-dag.c

@@ -30,7 +30,7 @@
 #include "util-affinity.h"
 #include "util-runmodes.h"
 
-static int DagConfigGetThreadCount(void *conf)
+static uint16_t DagConfigGetThreadCount(void *conf)
 {
     return 1;
 }

src/runmode-netmap.c

@@ -357,13 +357,13 @@ static void *ParseNetmapConfig(const char *iface_name)
 
     SC_ATOMIC_RESET(aconf->ref);
     (void) SC_ATOMIC_ADD(aconf->ref, aconf->in.threads);
-    SCLogPerf("%s: using %d threads", aconf->iface_name, aconf->in.threads);
+    SCLogPerf("%s: using %u threads", aconf->iface_name, aconf->in.threads);
 
     LiveDeviceHasNoStats();
     return aconf;
 }
 
-static int NetmapConfigGeThreadsCount(void *conf)
+static uint16_t NetmapConfigGeThreadsCount(void *conf)
 {
     NetmapIfaceConfig *aconf = (NetmapIfaceConfig *)conf;
     return aconf->in.threads;

src/runmode-nflog.c

@@ -139,7 +139,7 @@ static void *ParseNflogConfig(const char *group)
     return nflogconf;
 }
 
-static int NflogConfigGeThreadsCount(void *conf)
+static uint16_t NflogConfigGeThreadsCount(void *conf)
 {
     /* for each nflog group there is no reason to use more than 1 thread */
     return 1;

src/runmode-pcap.c

@@ -136,7 +136,7 @@ static void *ParsePcapConfig(const char *iface)
         aconf->threads = 1;
     } else {
         if (threadsstr != NULL) {
-            if (StringParseInt32(&aconf->threads, 10, 0, (const char *)threadsstr) < 0) {
+            if (StringParseUint16(&aconf->threads, 10, 0, (const char *)threadsstr) < 0) {
                 SCLogWarning("Invalid value for "
                              "pcap.threads: %s, resetting to 1",
                         threadsstr);
@@ -216,7 +216,7 @@ static void *ParsePcapConfig(const char *iface)
     return aconf;
 }
 
-static int PcapConfigGeThreadsCount(void *conf)
+static uint16_t PcapConfigGeThreadsCount(void *conf)
 {
     PcapIfaceConfig *pfp = (PcapIfaceConfig *)conf;
     return pfp->threads;

src/source-af-packet.h

@@ -89,7 +89,7 @@ typedef struct AFPIfaceConfig_
 {
     char iface[AFP_IFACE_NAME_LENGTH];
     /* number of threads */
-    int threads;
+    uint16_t threads;
     /* socket buffer size */
     int buffer_size;
     /* ring size in number of packets */

src/source-af-xdp.h

@@ -29,7 +29,7 @@
 typedef struct AFXDPIfaceConfig {
     char iface[AFXDP_IFACE_NAME_LENGTH];
     /* number of threads */
-    int threads;
+    uint16_t threads;
     int promisc;
 
     /* misc use flags */

src/source-pcap.h

@@ -45,7 +45,7 @@ typedef struct PcapIfaceConfig_
 {
     char iface[PCAP_IFACE_NAME_LENGTH];
     /* number of threads */
-    int threads;
+    uint16_t threads;
     /* socket buffer size */
     int buffer_size;
     /* snapshot length */

src/util-runmodes.h

@@ -25,7 +25,7 @@
 
 typedef void *(*ConfigIfaceParserFunc) (const char *);
 typedef void *(*ConfigIPSParserFunc) (int);
-typedef int (*ConfigIfaceThreadsCountFunc) (void *);
+typedef uint16_t (*ConfigIfaceThreadsCountFunc)(void *);
 
 int RunModeSetLiveCaptureAuto(ConfigIfaceParserFunc configparser,
                               ConfigIfaceThreadsCountFunc ModThreadsCount,