[dpdk-dev] [PATCH v2] net/null:Different mac address support

[Mallesh Koujalagi]

After attaching two Null device to ovs, seeing "00.00.00.00.00.00" mac
address for both null devices. Fix this issue, by setting different mac
address.

Signed-off-by: Mallesh Koujalagi <malleshx.koujal...@intel.com>
---
 drivers/net/null/rte_eth_null.c | 26 +++++++++++++++++++++++---
 1 file changed, 23 insertions(+), 3 deletions(-)

diff --git a/drivers/net/null/rte_eth_null.c b/drivers/net/null/rte_eth_null.c
index 9385ffd..599b513 100644
--- a/drivers/net/null/rte_eth_null.c
+++ b/drivers/net/null/rte_eth_null.c
@@ -85,8 +85,17 @@ struct pmd_internals {
        uint8_t rss_key[40];                /**< 40-byte hash key. */
 };
 
+static struct ether_addr base_eth_addr = {
+       .addr_bytes = {
+               0x4E /* N */,
+               0x55 /* U */,
+               0x4C /* L */,
+               0x4C /* L */,
+               0x00,
+               0x00
+       }
+};
 
-static struct ether_addr eth_addr = { .addr_bytes = {0} };
 static struct rte_eth_link pmd_link = {
        .link_speed = ETH_SPEED_NUM_10G,
        .link_duplex = ETH_LINK_FULL_DUPLEX,
@@ -492,6 +501,7 @@ eth_dev_null_create(struct rte_vdev_device *dev,
        struct rte_eth_dev_data *data = NULL;
        struct pmd_internals *internals = NULL;
        struct rte_eth_dev *eth_dev = NULL;
+       struct ether_addr *eth_addr = NULL;
 
        static const uint8_t default_rss_key[40] = {
                0x6D, 0x5A, 0x56, 0xDA, 0x25, 0x5B, 0x0E, 0xC2, 0x41, 0x67, 
0x25, 0x3D,
@@ -514,12 +524,21 @@ eth_dev_null_create(struct rte_vdev_device *dev,
        if (!data)
                return -ENOMEM;
 
+       eth_addr = rte_zmalloc_socket(rte_vdev_device_name(dev),
+                       sizeof(*eth_addr), 0, dev->device.numa_node);
+       if (eth_addr == NULL) {
+               rte_free(data);
+               return -ENOMEM;
+       }
+
        eth_dev = rte_eth_vdev_allocate(dev, sizeof(*internals));
        if (!eth_dev) {
+               rte_free(eth_addr);
                rte_free(data);
                return -ENOMEM;
        }
-
+       *eth_addr = base_eth_addr;
+       eth_addr->addr_bytes[5] = eth_dev->data->port_id;
        /* now put it all together
         * - store queue data in internals,
         * - store numa_node info in ethdev data
@@ -543,7 +562,7 @@ eth_dev_null_create(struct rte_vdev_device *dev,
        data->nb_rx_queues = (uint16_t)nb_rx_queues;
        data->nb_tx_queues = (uint16_t)nb_tx_queues;
        data->dev_link = pmd_link;
-       data->mac_addrs = &eth_addr;
+       data->mac_addrs = eth_addr;
 
        eth_dev->data = data;
        eth_dev->dev_ops = &ops;
@@ -662,6 +681,7 @@ rte_pmd_null_remove(struct rte_vdev_device *dev)
        if (eth_dev == NULL)
                return -1;
 
+       rte_free(eth_dev->data->mac_addrs);
        rte_free(eth_dev->data->dev_private);
        rte_free(eth_dev->data);
 
-- 
2.7.4