X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fmlx5%2Fmlx5_vlan.c;fp=drivers%2Fnet%2Fmlx5%2Fmlx5_vlan.c;h=ca8057124ac221d68034f15143e94a21a9cefbd7;hb=e9086978b2591c3777b0e03cff5f52cf4dda1e98;hp=0000000000000000000000000000000000000000;hpb=02d754304391cced3d0701610ce6b7bfdcd15b39;p=dpdk.git

diff --git a/drivers/net/mlx5/mlx5_vlan.c b/drivers/net/mlx5/mlx5_vlan.c
new file mode 100644
index 0000000000..ca8057124a
--- /dev/null
+++ b/drivers/net/mlx5/mlx5_vlan.c
@@ -0,0 +1,156 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright 2015 6WIND S.A.
+ *   Copyright 2015 Mellanox.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of 6WIND S.A. nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stddef.h>
+#include <errno.h>
+#include <assert.h>
+#include <stdint.h>
+
+/* DPDK headers don't like -pedantic. */
+#ifdef PEDANTIC
+#pragma GCC diagnostic ignored "-pedantic"
+#endif
+#include <rte_ethdev.h>
+#include <rte_common.h>
+#ifdef PEDANTIC
+#pragma GCC diagnostic error "-pedantic"
+#endif
+
+#include "mlx5_utils.h"
+#include "mlx5.h"
+
+/**
+ * Configure a VLAN filter.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ * @param vlan_id
+ *   VLAN ID to filter.
+ * @param on
+ *   Toggle filter.
+ *
+ * @return
+ *   0 on success, errno value on failure.
+ */
+static int
+vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
+{
+	struct priv *priv = dev->data->dev_private;
+	unsigned int i;
+	unsigned int r;
+	struct rxq *rxq;
+
+	DEBUG("%p: %s VLAN filter ID %" PRIu16,
+	      (void *)dev, (on ? "enable" : "disable"), vlan_id);
+	assert(priv->vlan_filter_n <= RTE_DIM(priv->vlan_filter));
+	for (i = 0; (i != priv->vlan_filter_n); ++i)
+		if (priv->vlan_filter[i] == vlan_id)
+			break;
+	/* Check if there's room for another VLAN filter. */
+	if (i == RTE_DIM(priv->vlan_filter))
+		return ENOMEM;
+	if (i < priv->vlan_filter_n) {
+		assert(priv->vlan_filter_n != 0);
+		/* Enabling an existing VLAN filter has no effect. */
+		if (on)
+			return 0;
+		/* Remove VLAN filter from list. */
+		--priv->vlan_filter_n;
+		memmove(&priv->vlan_filter[i],
+			&priv->vlan_filter[i + 1],
+			priv->vlan_filter_n - i);
+		priv->vlan_filter[priv->vlan_filter_n] = 0;
+	} else {
+		assert(i == priv->vlan_filter_n);
+		/* Disabling an unknown VLAN filter has no effect. */
+		if (!on)
+			return 0;
+		/* Add new VLAN filter. */
+		priv->vlan_filter[priv->vlan_filter_n] = vlan_id;
+		++priv->vlan_filter_n;
+	}
+	if (!priv->started)
+		return 0;
+	/* Rehash MAC flows in all RX queues. */
+	if (priv->rss) {
+		rxq = &priv->rxq_parent;
+		r = 1;
+	} else {
+		rxq = (*priv->rxqs)[0];
+		r = priv->rxqs_n;
+	}
+	for (i = 0; (i < r); rxq = (*priv->rxqs)[++i]) {
+		int ret;
+
+		if (rxq == NULL)
+			continue;
+		rxq_mac_addrs_del(rxq);
+		ret = rxq_mac_addrs_add(rxq);
+		if (!ret)
+			continue;
+		/* Rollback. */
+		while (i != 0) {
+			rxq = (*priv->rxqs)[--i];
+			if (rxq != NULL)
+				rxq_mac_addrs_del(rxq);
+		}
+		return ret;
+	}
+	return 0;
+}
+
+/**
+ * DPDK callback to configure a VLAN filter.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ * @param vlan_id
+ *   VLAN ID to filter.
+ * @param on
+ *   Toggle filter.
+ *
+ * @return
+ *   0 on success, negative errno value on failure.
+ */
+int
+mlx5_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
+{
+	struct priv *priv = dev->data->dev_private;
+	int ret;
+
+	priv_lock(priv);
+	ret = vlan_filter_set(dev, vlan_id, on);
+	priv_unlock(priv);
+	assert(ret >= 0);
+	return -ret;
+}