qeth: HiperSockets Network Traffic Analyzer
New feature to trace HiperSockets network traffic for debugging
purposes.
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/s390/net/qeth_l3_sys.c b/drivers/s390/net/qeth_l3_sys.c
index 3360b09..3f08b11 100644
--- a/drivers/s390/net/qeth_l3_sys.c
+++ b/drivers/s390/net/qeth_l3_sys.c
@@ -319,6 +319,61 @@
static DEVICE_ATTR(checksumming, 0644, qeth_l3_dev_checksum_show,
qeth_l3_dev_checksum_store);
+static ssize_t qeth_l3_dev_sniffer_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct qeth_card *card = dev_get_drvdata(dev);
+
+ if (!card)
+ return -EINVAL;
+
+ return sprintf(buf, "%i\n", card->options.sniffer ? 1 : 0);
+}
+
+static ssize_t qeth_l3_dev_sniffer_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct qeth_card *card = dev_get_drvdata(dev);
+ int ret;
+ unsigned long i;
+
+ if (!card)
+ return -EINVAL;
+
+ if (card->info.type != QETH_CARD_TYPE_IQD)
+ return -EPERM;
+
+ if ((card->state != CARD_STATE_DOWN) &&
+ (card->state != CARD_STATE_RECOVER))
+ return -EPERM;
+
+ ret = strict_strtoul(buf, 16, &i);
+ if (ret)
+ return -EINVAL;
+ switch (i) {
+ case 0:
+ card->options.sniffer = i;
+ break;
+ case 1:
+ ret = qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd);
+ if (card->ssqd.qdioac2 & QETH_SNIFF_AVAIL) {
+ card->options.sniffer = i;
+ if (card->qdio.init_pool.buf_count !=
+ QETH_IN_BUF_COUNT_MAX)
+ qeth_realloc_buffer_pool(card,
+ QETH_IN_BUF_COUNT_MAX);
+ break;
+ } else
+ return -EPERM;
+ default: /* fall through */
+ return -EINVAL;
+ }
+ return count;
+}
+
+static DEVICE_ATTR(sniffer, 0644, qeth_l3_dev_sniffer_show,
+ qeth_l3_dev_sniffer_store);
+
static ssize_t qeth_l3_dev_large_send_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -373,6 +428,7 @@
&dev_attr_broadcast_mode.attr,
&dev_attr_canonical_macaddr.attr,
&dev_attr_checksumming.attr,
+ &dev_attr_sniffer.attr,
&dev_attr_large_send.attr,
NULL,
};