/**
* \brief extract information from config file
*
* The returned structure will be freed by the thread init function.
* This is thus necessary to or copy the structure before giving it
* to thread or to reparse the file for each thread (and thus have
* new structure.
*
* \return a NetmapIfaceConfig corresponding to the interface name
*/
static void *ParseNetmapConfig(const char *iface_name)
{
ConfNode *if_root = NULL;
ConfNode *if_default = NULL;
ConfNode *netmap_node;
char *out_iface = NULL;
if (iface_name == NULL) {
return NULL;
}
NetmapIfaceConfig *aconf = SCMalloc(sizeof(*aconf));
if (unlikely(aconf == NULL)) {
return NULL;
}
memset(aconf, 0, sizeof(*aconf));
aconf->DerefFunc = NetmapDerefConfig;
strlcpy(aconf->iface_name, iface_name, sizeof(aconf->iface_name));
SC_ATOMIC_INIT(aconf->ref);
(void) SC_ATOMIC_ADD(aconf->ref, 1);
/* Find initial node */
netmap_node = ConfGetNode("netmap");
if (netmap_node == NULL) {
SCLogInfo("Unable to find netmap config using default value");
} else {
if_root = ConfFindDeviceConfig(netmap_node, aconf->iface_name);
if_default = ConfFindDeviceConfig(netmap_node, "default");
}
/* parse settings for capture iface */
ParseNetmapSettings(&aconf->in, aconf->iface_name, if_root, if_default);
/* if we have a copy iface, parse that as well */
if (netmap_node != NULL) {
if (ConfGetChildValueWithDefault(if_root, if_default, "copy-iface", &out_iface) == 1) {
if (strlen(out_iface) > 0) {
if_root = ConfFindDeviceConfig(netmap_node, out_iface);
ParseNetmapSettings(&aconf->out, out_iface, if_root, if_default);
}
}
}
SC_ATOMIC_RESET(aconf->ref);
(void) SC_ATOMIC_ADD(aconf->ref, aconf->in.threads);
SCLogPerf("Using %d threads for interface %s", aconf->in.threads,
aconf->iface_name);
return aconf;
}
/**
* \brief extract information from config file
*
* The returned structure will be freed by the thread init function.
* This is thus necessary to or copy the structure before giving it
* to thread or to reparse the file for each thread (and thus have
* new structure.
*
* \return a NetmapIfaceConfig corresponding to the interface name
*/
static void *ParseNetmapConfig(const char *iface_name)
{
char *threadsstr = NULL;
ConfNode *if_root;
ConfNode *if_default = NULL;
ConfNode *netmap_node;
NetmapIfaceConfig *aconf = SCMalloc(sizeof(*aconf));
char *tmpctype;
char *copymodestr;
int boolval;
char *bpf_filter = NULL;
char *out_iface = NULL;
if (unlikely(aconf == NULL)) {
return NULL;
}
if (iface_name == NULL) {
SCFree(aconf);
return NULL;
}
memset(aconf, 0, sizeof(*aconf));
aconf->DerefFunc = NetmapDerefConfig;
aconf->threads = 1;
aconf->promisc = 1;
aconf->checksum_mode = CHECKSUM_VALIDATION_AUTO;
aconf->copy_mode = NETMAP_COPY_MODE_NONE;
strlcpy(aconf->iface_name, iface_name, sizeof(aconf->iface_name));
SC_ATOMIC_INIT(aconf->ref);
(void) SC_ATOMIC_ADD(aconf->ref, 1);
strlcpy(aconf->iface, aconf->iface_name, sizeof(aconf->iface));
if (aconf->iface[0]) {
size_t len = strlen(aconf->iface);
if (aconf->iface[len-1] == '+') {
aconf->iface[len-1] = '\0';
aconf->iface_sw = 1;
}
}
if (ConfGet("bpf-filter", &bpf_filter) == 1) {
if (strlen(bpf_filter) > 0) {
aconf->bpf_filter = bpf_filter;
SCLogInfo("Going to use command-line provided bpf filter '%s'",
aconf->bpf_filter);
}
}
/* Find initial node */
netmap_node = ConfGetNode("netmap");
if (netmap_node == NULL) {
SCLogInfo("Unable to find netmap config using default value");
return aconf;
}
if_root = ConfFindDeviceConfig(netmap_node, aconf->iface_name);
if_default = ConfFindDeviceConfig(netmap_node, "default");
if (if_root == NULL && if_default == NULL) {
SCLogInfo("Unable to find netmap config for "
"interface \"%s\" or \"default\", using default value",
aconf->iface_name);
return aconf;
}
/* If there is no setting for current interface use default one as main iface */
if (if_root == NULL) {
if_root = if_default;
if_default = NULL;
}
if (ConfGetChildValueWithDefault(if_root, if_default, "threads", &threadsstr) != 1) {
aconf->threads = 1;
} else {
if (strcmp(threadsstr, "auto") == 0) {
aconf->threads = GetIfaceRSSQueuesNum(aconf->iface);
} else {
aconf->threads = (uint8_t)atoi(threadsstr);
}
}
if (aconf->threads <= 0) {
aconf->threads = 1;
}
if (aconf->threads) {
SCLogInfo("Using %d threads for interface %s", aconf->threads,
aconf->iface_name);
}
if (ConfGetChildValueWithDefault(if_root, if_default, "copy-iface", &out_iface) == 1) {
if (strlen(out_iface) > 0) {
aconf->out_iface_name = out_iface;
}
}
if (ConfGetChildValueWithDefault(if_root, if_default, "copy-mode", ©modestr) == 1) {
if (aconf->out_iface_name == NULL) {
SCLogInfo("Copy mode activated but no destination"
" iface. Disabling feature");
} else if (strlen(copymodestr) <= 0) {
aconf->out_iface_name = NULL;
} else if (strcmp(copymodestr, "ips") == 0) {
SCLogInfo("Netmap IPS mode activated %s->%s",
aconf->iface_name,
aconf->out_iface_name);
aconf->copy_mode = NETMAP_COPY_MODE_IPS;
} else if (strcmp(copymodestr, "tap") == 0) {
SCLogInfo("Netmap TAP mode activated %s->%s",
aconf->iface_name,
aconf->out_iface_name);
aconf->copy_mode = NETMAP_COPY_MODE_TAP;
} else {
SCLogInfo("Invalid mode (not in tap, ips)");
}
}
if (aconf->out_iface_name && aconf->out_iface_name[0]) {
strlcpy(aconf->out_iface, aconf->out_iface_name,
sizeof(aconf->out_iface));
size_t len = strlen(aconf->out_iface);
if (aconf->out_iface[len-1] == '+') {
aconf->out_iface[len-1] = '\0';
aconf->out_iface_sw = 1;
}
}
SC_ATOMIC_RESET(aconf->ref);
(void) SC_ATOMIC_ADD(aconf->ref, aconf->threads);
/* load netmap bpf filter */
/* command line value has precedence */
if (ConfGet("bpf-filter", &bpf_filter) != 1) {
if (ConfGetChildValueWithDefault(if_root, if_default, "bpf-filter", &bpf_filter) == 1) {
if (strlen(bpf_filter) > 0) {
aconf->bpf_filter = bpf_filter;
SCLogInfo("Going to use bpf filter %s", aconf->bpf_filter);
}
}
}
(void)ConfGetChildValueBoolWithDefault(if_root, if_default, "disable-promisc", (int *)&boolval);
if (boolval) {
SCLogInfo("Disabling promiscuous mode on iface %s", aconf->iface);
aconf->promisc = 0;
}
if (ConfGetChildValueWithDefault(if_root, if_default, "checksum-checks", &tmpctype) == 1) {
if (strcmp(tmpctype, "auto") == 0) {
aconf->checksum_mode = CHECKSUM_VALIDATION_AUTO;
} else if (ConfValIsTrue(tmpctype)) {
aconf->checksum_mode = CHECKSUM_VALIDATION_ENABLE;
} else if (ConfValIsFalse(tmpctype)) {
aconf->checksum_mode = CHECKSUM_VALIDATION_DISABLE;
} else {
SCLogError(SC_ERR_INVALID_ARGUMENT, "Invalid value for checksum-checks for %s", aconf->iface_name);
}
}
return aconf;
}
/**
* \brief extract information from config file
*
* The returned structure will be freed by the thread init function.
* This is thus necessary to or copy the structure before giving it
* to thread or to reparse the file for each thread (and thus have
* new structure.
*
* If old config system is used, then return the smae parameters
* value for each interface.
*
* \return a PfringIfaceConfig corresponding to the interface name
*/
static void *ParsePfringConfig(const char *iface)
{
const char *threadsstr = NULL;
ConfNode *if_root;
ConfNode *if_default = NULL;
ConfNode *pf_ring_node;
PfringIfaceConfig *pfconf = SCMalloc(sizeof(*pfconf));
const char *tmpclusterid;
const char *tmpctype = NULL;
cluster_type default_ctype = CLUSTER_ROUND_ROBIN;
int getctype = 0;
const char *bpf_filter = NULL;
if (unlikely(pfconf == NULL)) {
return NULL;
}
if (iface == NULL) {
SCFree(pfconf);
return NULL;
}
memset(pfconf, 0, sizeof(PfringIfaceConfig));
strlcpy(pfconf->iface, iface, sizeof(pfconf->iface));
pfconf->threads = 1;
pfconf->cluster_id = 1;
pfconf->ctype = (cluster_type)default_ctype;
pfconf->DerefFunc = PfringDerefConfig;
SC_ATOMIC_INIT(pfconf->ref);
(void) SC_ATOMIC_ADD(pfconf->ref, 1);
/* Find initial node */
pf_ring_node = ConfGetNode("pfring");
if (pf_ring_node == NULL) {
SCLogInfo("Unable to find pfring config using default value");
return pfconf;
}
if_root = ConfFindDeviceConfig(pf_ring_node, iface);
if_default = ConfFindDeviceConfig(pf_ring_node, "default");
if (if_root == NULL && if_default == NULL) {
SCLogInfo("Unable to find pfring config for "
"interface %s, using default value or 1.0 "
"configuration system. ",
iface);
return pfconf;
}
/* If there is no setting for current interface use default one as main iface */
if (if_root == NULL) {
if_root = if_default;
if_default = NULL;
}
if (ConfGetChildValueWithDefault(if_root, if_default, "threads", &threadsstr) != 1) {
pfconf->threads = 1;
} else {
if (threadsstr != NULL) {
pfconf->threads = (uint8_t)atoi(threadsstr);
}
}
if (pfconf->threads == 0) {
pfconf->threads = 1;
}
SC_ATOMIC_RESET(pfconf->ref);
(void) SC_ATOMIC_ADD(pfconf->ref, pfconf->threads);
/* command line value has precedence */
if (ConfGet("pfring.cluster-id", &tmpclusterid) == 1) {
pfconf->cluster_id = (uint16_t)atoi(tmpclusterid);
pfconf->flags |= PFRING_CONF_FLAGS_CLUSTER;
SCLogDebug("Going to use command-line provided cluster-id %" PRId32,
pfconf->cluster_id);
} else {
if (strncmp(pfconf->iface, "zc", 2) == 0) {
SCLogInfo("ZC interface detected, not setting cluster-id for PF_RING (iface %s)",
pfconf->iface);
} else if ((pfconf->threads == 1) && (strncmp(pfconf->iface, "dna", 3) == 0)) {
SCLogInfo("DNA interface detected, not setting cluster-id for PF_RING (iface %s)",
pfconf->iface);
} else if (ConfGetChildValueWithDefault(if_root, if_default, "cluster-id", &tmpclusterid) != 1) {
SCLogError(SC_ERR_INVALID_ARGUMENT,
"Could not get cluster-id from config");
} else {
pfconf->cluster_id = (uint16_t)atoi(tmpclusterid);
pfconf->flags |= PFRING_CONF_FLAGS_CLUSTER;
SCLogDebug("Going to use cluster-id %" PRId32, pfconf->cluster_id);
}
}
/*load pfring bpf filter*/
/* command line value has precedence */
if (ConfGet("bpf-filter", &bpf_filter) == 1) {
if (strlen(bpf_filter) > 0) {
pfconf->bpf_filter = SCStrdup(bpf_filter);
if (unlikely(pfconf->bpf_filter == NULL)) {
SCLogError(SC_ERR_MEM_ALLOC,
"Can't allocate BPF filter string");
} else {
SCLogDebug("Going to use command-line provided bpf filter %s",
pfconf->bpf_filter);
}
}
} else {
if (ConfGetChildValueWithDefault(if_root, if_default, "bpf-filter", &bpf_filter) == 1) {
if (strlen(bpf_filter) > 0) {
pfconf->bpf_filter = SCStrdup(bpf_filter);
if (unlikely(pfconf->bpf_filter == NULL)) {
SCLogError(SC_ERR_MEM_ALLOC,
"Can't allocate BPF filter string");
} else {
SCLogDebug("Going to use bpf filter %s",
pfconf->bpf_filter);
}
}
}
}
if (ConfGet("pfring.cluster-type", &tmpctype) == 1) {
SCLogDebug("Going to use command-line provided cluster-type");
getctype = 1;
} else {
if (strncmp(pfconf->iface, "zc", 2) == 0) {
SCLogInfo("ZC interface detected, not setting cluster type for PF_RING (iface %s)",
pfconf->iface);
} else if ((pfconf->threads == 1) && (strncmp(pfconf->iface, "dna", 3) == 0)) {
SCLogInfo("DNA interface detected, not setting cluster type for PF_RING (iface %s)",
pfconf->iface);
} else if (ConfGetChildValueWithDefault(if_root, if_default, "cluster-type", &tmpctype) != 1) {
SCLogError(SC_ERR_GET_CLUSTER_TYPE_FAILED,
"Could not get cluster-type from config");
} else {
getctype = 1;
}
}
if (getctype) {
if (strcmp(tmpctype, "cluster_round_robin") == 0) {
SCLogInfo("Using round-robin cluster mode for PF_RING (iface %s)",
pfconf->iface);
pfconf->ctype = CLUSTER_ROUND_ROBIN;
} else if (strcmp(tmpctype, "cluster_flow") == 0) {
SCLogInfo("Using flow cluster mode for PF_RING (iface %s)",
pfconf->iface);
pfconf->ctype = CLUSTER_FLOW;
} else {
SCLogError(SC_ERR_INVALID_CLUSTER_TYPE,
"invalid cluster-type %s",
tmpctype);
SCFree(pfconf);
return NULL;
}
}
if (ConfGetChildValueWithDefault(if_root, if_default, "checksum-checks", &tmpctype) == 1) {
if (strcmp(tmpctype, "auto") == 0) {
pfconf->checksum_mode = CHECKSUM_VALIDATION_AUTO;
} else if (ConfValIsTrue(tmpctype)) {
pfconf->checksum_mode = CHECKSUM_VALIDATION_ENABLE;
} else if (ConfValIsFalse(tmpctype)) {
pfconf->checksum_mode = CHECKSUM_VALIDATION_DISABLE;
} else if (strcmp(tmpctype, "rx-only") == 0) {
pfconf->checksum_mode = CHECKSUM_VALIDATION_RXONLY;
} else {
SCLogError(SC_ERR_INVALID_ARGUMENT, "Invalid value for checksum-checks for %s", pfconf->iface);
}
}
return pfconf;
}
