X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=drivers%2Fnet%2Fmlx5%2Fmlx5_mac.c;fp=drivers%2Fnet%2Fmlx5%2Fmlx5_mac.c;h=c9cea48518e00d2578754e3c9b22b2153fd4595f;hb=97f17497d162afdb82c8704bf097f0fee3724b2e;hp=0000000000000000000000000000000000000000;hpb=e04be89c2409570e0055b2cda60bd11395bb93b0;p=deb_dpdk.git

diff --git a/drivers/net/mlx5/mlx5_mac.c b/drivers/net/mlx5/mlx5_mac.c
new file mode 100644
index 00000000..c9cea485
--- /dev/null
+++ b/drivers/net/mlx5/mlx5_mac.c
@@ -0,0 +1,510 @@
+/*-
+ *   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 <assert.h>
+#include <stdint.h>
+#include <string.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <netinet/in.h>
+#include <linux/if.h>
+#include <sys/ioctl.h>
+#include <arpa/inet.h>
+
+/* Verbs header. */
+/* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
+#ifdef PEDANTIC
+#pragma GCC diagnostic ignored "-pedantic"
+#endif
+#include <infiniband/verbs.h>
+#ifdef PEDANTIC
+#pragma GCC diagnostic error "-pedantic"
+#endif
+
+/* DPDK headers don't like -pedantic. */
+#ifdef PEDANTIC
+#pragma GCC diagnostic ignored "-pedantic"
+#endif
+#include <rte_ether.h>
+#include <rte_ethdev.h>
+#include <rte_common.h>
+#ifdef PEDANTIC
+#pragma GCC diagnostic error "-pedantic"
+#endif
+
+#include "mlx5.h"
+#include "mlx5_utils.h"
+#include "mlx5_rxtx.h"
+#include "mlx5_defs.h"
+
+/**
+ * Get MAC address by querying netdevice.
+ *
+ * @param[in] priv
+ *   struct priv for the requested device.
+ * @param[out] mac
+ *   MAC address output buffer.
+ *
+ * @return
+ *   0 on success, -1 on failure and errno is set.
+ */
+int
+priv_get_mac(struct priv *priv, uint8_t (*mac)[ETHER_ADDR_LEN])
+{
+	struct ifreq request;
+
+	if (priv_ifreq(priv, SIOCGIFHWADDR, &request))
+		return -1;
+	memcpy(mac, request.ifr_hwaddr.sa_data, ETHER_ADDR_LEN);
+	return 0;
+}
+
+/**
+ * Delete MAC flow steering rule.
+ *
+ * @param hash_rxq
+ *   Pointer to hash RX queue structure.
+ * @param mac_index
+ *   MAC address index.
+ * @param vlan_index
+ *   VLAN index to use.
+ */
+static void
+hash_rxq_del_mac_flow(struct hash_rxq *hash_rxq, unsigned int mac_index,
+		      unsigned int vlan_index)
+{
+#ifndef NDEBUG
+	const uint8_t (*mac)[ETHER_ADDR_LEN] =
+		(const uint8_t (*)[ETHER_ADDR_LEN])
+		hash_rxq->priv->mac[mac_index].addr_bytes;
+#endif
+
+	assert(mac_index < RTE_DIM(hash_rxq->mac_flow));
+	assert(vlan_index < RTE_DIM(hash_rxq->mac_flow[mac_index]));
+	if (hash_rxq->mac_flow[mac_index][vlan_index] == NULL)
+		return;
+	DEBUG("%p: removing MAC address %02x:%02x:%02x:%02x:%02x:%02x index %u"
+	      " VLAN index %u",
+	      (void *)hash_rxq,
+	      (*mac)[0], (*mac)[1], (*mac)[2], (*mac)[3], (*mac)[4], (*mac)[5],
+	      mac_index,
+	      vlan_index);
+	claim_zero(ibv_exp_destroy_flow(hash_rxq->mac_flow
+					[mac_index][vlan_index]));
+	hash_rxq->mac_flow[mac_index][vlan_index] = NULL;
+}
+
+/**
+ * Unregister a MAC address from a hash RX queue.
+ *
+ * @param hash_rxq
+ *   Pointer to hash RX queue structure.
+ * @param mac_index
+ *   MAC address index.
+ */
+static void
+hash_rxq_mac_addr_del(struct hash_rxq *hash_rxq, unsigned int mac_index)
+{
+	unsigned int i;
+
+	assert(mac_index < RTE_DIM(hash_rxq->mac_flow));
+	for (i = 0; (i != RTE_DIM(hash_rxq->mac_flow[mac_index])); ++i)
+		hash_rxq_del_mac_flow(hash_rxq, mac_index, i);
+}
+
+/**
+ * Unregister all MAC addresses from a hash RX queue.
+ *
+ * @param hash_rxq
+ *   Pointer to hash RX queue structure.
+ */
+void
+hash_rxq_mac_addrs_del(struct hash_rxq *hash_rxq)
+{
+	unsigned int i;
+
+	for (i = 0; (i != RTE_DIM(hash_rxq->mac_flow)); ++i)
+		hash_rxq_mac_addr_del(hash_rxq, i);
+}
+
+/**
+ * Unregister a MAC address.
+ *
+ * This is done for each hash RX queue.
+ *
+ * @param priv
+ *   Pointer to private structure.
+ * @param mac_index
+ *   MAC address index.
+ */
+static void
+priv_mac_addr_del(struct priv *priv, unsigned int mac_index)
+{
+	unsigned int i;
+
+	assert(mac_index < RTE_DIM(priv->mac));
+	if (!BITFIELD_ISSET(priv->mac_configured, mac_index))
+		return;
+	for (i = 0; (i != priv->hash_rxqs_n); ++i)
+		hash_rxq_mac_addr_del(&(*priv->hash_rxqs)[i], mac_index);
+	BITFIELD_RESET(priv->mac_configured, mac_index);
+}
+
+/**
+ * Unregister all MAC addresses from all hash RX queues.
+ *
+ * @param priv
+ *   Pointer to private structure.
+ */
+void
+priv_mac_addrs_disable(struct priv *priv)
+{
+	unsigned int i;
+
+	for (i = 0; (i != priv->hash_rxqs_n); ++i)
+		hash_rxq_mac_addrs_del(&(*priv->hash_rxqs)[i]);
+}
+
+/**
+ * DPDK callback to remove a MAC address.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ * @param index
+ *   MAC address index.
+ */
+void
+mlx5_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
+{
+	struct priv *priv = dev->data->dev_private;
+
+	if (mlx5_is_secondary())
+		return;
+
+	priv_lock(priv);
+	DEBUG("%p: removing MAC address from index %" PRIu32,
+	      (void *)dev, index);
+	if (index >= RTE_DIM(priv->mac))
+		goto end;
+	priv_mac_addr_del(priv, index);
+end:
+	priv_unlock(priv);
+}
+
+/**
+ * Add MAC flow steering rule.
+ *
+ * @param hash_rxq
+ *   Pointer to hash RX queue structure.
+ * @param mac_index
+ *   MAC address index to register.
+ * @param vlan_index
+ *   VLAN index to use.
+ *
+ * @return
+ *   0 on success, errno value on failure.
+ */
+static int
+hash_rxq_add_mac_flow(struct hash_rxq *hash_rxq, unsigned int mac_index,
+		      unsigned int vlan_index)
+{
+	struct ibv_exp_flow *flow;
+	struct priv *priv = hash_rxq->priv;
+	const uint8_t (*mac)[ETHER_ADDR_LEN] =
+			(const uint8_t (*)[ETHER_ADDR_LEN])
+			priv->mac[mac_index].addr_bytes;
+	FLOW_ATTR_SPEC_ETH(data, priv_flow_attr(priv, NULL, 0, hash_rxq->type));
+	struct ibv_exp_flow_attr *attr = &data->attr;
+	struct ibv_exp_flow_spec_eth *spec = &data->spec;
+	unsigned int vlan_enabled = !!priv->vlan_filter_n;
+	unsigned int vlan_id = priv->vlan_filter[vlan_index];
+
+	assert(mac_index < RTE_DIM(hash_rxq->mac_flow));
+	assert(vlan_index < RTE_DIM(hash_rxq->mac_flow[mac_index]));
+	if (hash_rxq->mac_flow[mac_index][vlan_index] != NULL)
+		return 0;
+	/*
+	 * No padding must be inserted by the compiler between attr and spec.
+	 * This layout is expected by libibverbs.
+	 */
+	assert(((uint8_t *)attr + sizeof(*attr)) == (uint8_t *)spec);
+	priv_flow_attr(priv, attr, sizeof(data), hash_rxq->type);
+	/* The first specification must be Ethernet. */
+	assert(spec->type == IBV_EXP_FLOW_SPEC_ETH);
+	assert(spec->size == sizeof(*spec));
+	*spec = (struct ibv_exp_flow_spec_eth){
+		.type = IBV_EXP_FLOW_SPEC_ETH,
+		.size = sizeof(*spec),
+		.val = {
+			.dst_mac = {
+				(*mac)[0], (*mac)[1], (*mac)[2],
+				(*mac)[3], (*mac)[4], (*mac)[5]
+			},
+			.vlan_tag = (vlan_enabled ? htons(vlan_id) : 0),
+		},
+		.mask = {
+			.dst_mac = "\xff\xff\xff\xff\xff\xff",
+			.vlan_tag = (vlan_enabled ? htons(0xfff) : 0),
+		},
+	};
+	DEBUG("%p: adding MAC address %02x:%02x:%02x:%02x:%02x:%02x index %u"
+	      " VLAN index %u filtering %s, ID %u",
+	      (void *)hash_rxq,
+	      (*mac)[0], (*mac)[1], (*mac)[2], (*mac)[3], (*mac)[4], (*mac)[5],
+	      mac_index,
+	      vlan_index,
+	      (vlan_enabled ? "enabled" : "disabled"),
+	      vlan_id);
+	/* Create related flow. */
+	errno = 0;
+	flow = ibv_exp_create_flow(hash_rxq->qp, attr);
+	if (flow == NULL) {
+		/* It's not clear whether errno is always set in this case. */
+		ERROR("%p: flow configuration failed, errno=%d: %s",
+		      (void *)hash_rxq, errno,
+		      (errno ? strerror(errno) : "Unknown error"));
+		if (errno)
+			return errno;
+		return EINVAL;
+	}
+	hash_rxq->mac_flow[mac_index][vlan_index] = flow;
+	return 0;
+}
+
+/**
+ * Register a MAC address in a hash RX queue.
+ *
+ * @param hash_rxq
+ *   Pointer to hash RX queue structure.
+ * @param mac_index
+ *   MAC address index to register.
+ *
+ * @return
+ *   0 on success, errno value on failure.
+ */
+static int
+hash_rxq_mac_addr_add(struct hash_rxq *hash_rxq, unsigned int mac_index)
+{
+	struct priv *priv = hash_rxq->priv;
+	unsigned int i = 0;
+	int ret;
+
+	assert(mac_index < RTE_DIM(hash_rxq->mac_flow));
+	assert(RTE_DIM(hash_rxq->mac_flow[mac_index]) ==
+	       RTE_DIM(priv->vlan_filter));
+	/* Add a MAC address for each VLAN filter, or at least once. */
+	do {
+		ret = hash_rxq_add_mac_flow(hash_rxq, mac_index, i);
+		if (ret) {
+			/* Failure, rollback. */
+			while (i != 0)
+				hash_rxq_del_mac_flow(hash_rxq, mac_index,
+						      --i);
+			return ret;
+		}
+	} while (++i < priv->vlan_filter_n);
+	return 0;
+}
+
+/**
+ * Register all MAC addresses in a hash RX queue.
+ *
+ * @param hash_rxq
+ *   Pointer to hash RX queue structure.
+ *
+ * @return
+ *   0 on success, errno value on failure.
+ */
+int
+hash_rxq_mac_addrs_add(struct hash_rxq *hash_rxq)
+{
+	struct priv *priv = hash_rxq->priv;
+	unsigned int i;
+	int ret;
+
+	assert(RTE_DIM(priv->mac) == RTE_DIM(hash_rxq->mac_flow));
+	for (i = 0; (i != RTE_DIM(priv->mac)); ++i) {
+		if (!BITFIELD_ISSET(priv->mac_configured, i))
+			continue;
+		ret = hash_rxq_mac_addr_add(hash_rxq, i);
+		if (!ret)
+			continue;
+		/* Failure, rollback. */
+		while (i != 0)
+			hash_rxq_mac_addr_del(hash_rxq, --i);
+		assert(ret > 0);
+		return ret;
+	}
+	return 0;
+}
+
+/**
+ * Register a MAC address.
+ *
+ * This is done for each hash RX queue.
+ *
+ * @param priv
+ *   Pointer to private structure.
+ * @param mac_index
+ *   MAC address index to use.
+ * @param mac
+ *   MAC address to register.
+ *
+ * @return
+ *   0 on success, errno value on failure.
+ */
+int
+priv_mac_addr_add(struct priv *priv, unsigned int mac_index,
+		  const uint8_t (*mac)[ETHER_ADDR_LEN])
+{
+	unsigned int i;
+	int ret;
+
+	assert(mac_index < RTE_DIM(priv->mac));
+	/* First, make sure this address isn't already configured. */
+	for (i = 0; (i != RTE_DIM(priv->mac)); ++i) {
+		/* Skip this index, it's going to be reconfigured. */
+		if (i == mac_index)
+			continue;
+		if (!BITFIELD_ISSET(priv->mac_configured, i))
+			continue;
+		if (memcmp(priv->mac[i].addr_bytes, *mac, sizeof(*mac)))
+			continue;
+		/* Address already configured elsewhere, return with error. */
+		return EADDRINUSE;
+	}
+	if (BITFIELD_ISSET(priv->mac_configured, mac_index))
+		priv_mac_addr_del(priv, mac_index);
+	priv->mac[mac_index] = (struct ether_addr){
+		{
+			(*mac)[0], (*mac)[1], (*mac)[2],
+			(*mac)[3], (*mac)[4], (*mac)[5]
+		}
+	};
+	if (!priv_allow_flow_type(priv, HASH_RXQ_FLOW_TYPE_MAC))
+		goto end;
+	for (i = 0; (i != priv->hash_rxqs_n); ++i) {
+		ret = hash_rxq_mac_addr_add(&(*priv->hash_rxqs)[i], mac_index);
+		if (!ret)
+			continue;
+		/* Failure, rollback. */
+		while (i != 0)
+			hash_rxq_mac_addr_del(&(*priv->hash_rxqs)[--i],
+					      mac_index);
+		return ret;
+	}
+end:
+	BITFIELD_SET(priv->mac_configured, mac_index);
+	return 0;
+}
+
+/**
+ * Register all MAC addresses in all hash RX queues.
+ *
+ * @param priv
+ *   Pointer to private structure.
+ *
+ * @return
+ *   0 on success, errno value on failure.
+ */
+int
+priv_mac_addrs_enable(struct priv *priv)
+{
+	unsigned int i;
+	int ret;
+
+	if (!priv_allow_flow_type(priv, HASH_RXQ_FLOW_TYPE_MAC))
+		return 0;
+	for (i = 0; (i != priv->hash_rxqs_n); ++i) {
+		ret = hash_rxq_mac_addrs_add(&(*priv->hash_rxqs)[i]);
+		if (!ret)
+			continue;
+		/* Failure, rollback. */
+		while (i != 0)
+			hash_rxq_mac_addrs_del(&(*priv->hash_rxqs)[--i]);
+		assert(ret > 0);
+		return ret;
+	}
+	return 0;
+}
+
+/**
+ * DPDK callback to add a MAC address.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ * @param mac_addr
+ *   MAC address to register.
+ * @param index
+ *   MAC address index.
+ * @param vmdq
+ *   VMDq pool index to associate address with (ignored).
+ */
+void
+mlx5_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
+		  uint32_t index, uint32_t vmdq)
+{
+	struct priv *priv = dev->data->dev_private;
+
+	if (mlx5_is_secondary())
+		return;
+
+	(void)vmdq;
+	priv_lock(priv);
+	DEBUG("%p: adding MAC address at index %" PRIu32,
+	      (void *)dev, index);
+	if (index >= RTE_DIM(priv->mac))
+		goto end;
+	priv_mac_addr_add(priv, index,
+			  (const uint8_t (*)[ETHER_ADDR_LEN])
+			  mac_addr->addr_bytes);
+end:
+	priv_unlock(priv);
+}
+
+/**
+ * DPDK callback to set primary MAC address.
+ *
+ * @param dev
+ *   Pointer to Ethernet device structure.
+ * @param mac_addr
+ *   MAC address to register.
+ */
+void
+mlx5_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
+{
+	DEBUG("%p: setting primary MAC address", (void *)dev);
+	mlx5_mac_addr_remove(dev, 0);
+	mlx5_mac_addr_add(dev, mac_addr, 0, 0);
+}