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pcap: increase capture buffer size to 10M

This commit is contained in:
Kaian 2020-03-25 14:25:09 +01:00
parent b1ecf3e37e
commit 341dad4fd3
2 changed files with 47 additions and 3 deletions
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44
src/capture/capture_pcap.c
View File

@ -159,16 +159,56 @@ capture_input_pcap_online(const gchar *dev, GError **error)
}
// Open capture device
pcap->handle = pcap_open_live(dev, MAXIMUM_SNAPLEN, 1, 1000, errbuf);
pcap->handle = pcap_create(dev, errbuf);
if (pcap->handle == NULL) {
g_set_error(error,
CAPTURE_PCAP_ERROR,
CAPTURE_PCAP_ERROR_DEVICE_OPEN,
CAPTURE_PCAP_ERROR_DEVICE_CREATE,
"Couldn't open device %s: %s",
dev, errbuf);
return NULL;
}
gint status = pcap_set_promisc(pcap->handle, 1);
if (status != 0) {
g_set_error(error,
CAPTURE_PCAP_ERROR,
CAPTURE_PCAP_ERROR_PROMISC,
"Error setting promiscuous mode on %s: %s\n",
dev, pcap_statustostr(status));
return NULL;
}
status = pcap_set_timeout(pcap->handle, 1000);
if (status != 0) {
g_set_error(error,
CAPTURE_PCAP_ERROR,
CAPTURE_PCAP_ERROR_TIMEOUT,
"Error setting capture timeout on %s: %s\n",
dev, pcap_statustostr(status));
return NULL;
}
status = pcap_set_snaplen(pcap->handle, MAXIMUM_SNAPLEN);
if (status != 0) {
g_set_error(error,
CAPTURE_PCAP_ERROR,
CAPTURE_PCAP_ERROR_SNAPLEN,
"Error setting snaplen on %s: %s\n",
dev, pcap_statustostr(status));
return NULL;
}
status = pcap_set_buffer_size(pcap->handle, 10 * G_BYTES_PER_MEGABYTE);
if (status != 0) {
g_set_error(error,
CAPTURE_PCAP_ERROR,
CAPTURE_PCAP_ERROR_BUFFER_SIZE,
"Error setting buffer size on %s: %s\n",
dev, pcap_statustostr(status));
return NULL;
}
// Get datalink to dissect packets correctly
pcap->link = pcap_datalink(pcap->handle);

6
src/capture/capture_pcap.h
View File

@ -79,7 +79,11 @@ G_DECLARE_FINAL_TYPE(CaptureOutputPcap, capture_output_pcap, CAPTURE, OUTPUT_PCA
typedef enum
{
CAPTURE_PCAP_ERROR_DEVICE_LOOKUP = 0,
CAPTURE_PCAP_ERROR_DEVICE_OPEN,
CAPTURE_PCAP_ERROR_DEVICE_CREATE,
CAPTURE_PCAP_ERROR_PROMISC,
CAPTURE_PCAP_ERROR_TIMEOUT,
CAPTURE_PCAP_ERROR_SNAPLEN,
CAPTURE_PCAP_ERROR_BUFFER_SIZE,
CAPTURE_PCAP_ERROR_FILE_OPEN,
CAPTURE_PCAP_ERROR_UNKNOWN_LINK,
CAPTURE_PCAP_ERROR_FILTER_COMPILE,