LGTM
Acked-by: Chengwen Feng <fengcheng...@huawei.com>
On 2022/10/20 17:31, Huisong Li wrote:
> The dev->data->mac_addrs[0] will be changed to a new MAC address when
> applications modify the default MAC address by .mac_addr_set(). However,
> if the new default one has been added as a non-default MAC address by
> .mac_addr_add(), the .mac_addr_set() doesn't remove it from the mac_addrs
> list. As a result, one MAC address occupies two indexes in the list. Like:
> add(MAC1)
> add(MAC2)
> add(MAC3)
> add(MAC4)
> set_default(MAC3)
> default=MAC3, filters=MAC1, MAC2, MAC3, MAC4
>
> In addition, some PMDs, such as i40e, ice, hns3 and so on, do remove the
> old default MAC when set default MAC. If user continues to do
> set_default(MAC5), and the mac_addrs list is default=MAC5, filters=(MAC1,
> MAC2, MAC3, MAC4). At this moment, user can still see MAC3 from the list,
> but packets with MAC3 aren't actually received by the PMD.
>
> So this patch adds a remove operation in set default MAC API documents
> this behavior.
>
> Fixes: 854d8ad4ef68 ("ethdev: add default mac address modifier")
> Cc: sta...@dpdk.org
>
> Signed-off-by: Huisong Li <lihuis...@huawei.com>
> Signed-off-by: Min Hu (Connor) <humi...@huawei.com>
> ---
> v5:
> - merge the second patch into the first patch.
> - add error log when rollback failed.
>
> v4:
> - fix broken in the patchwork
>
> v3:
> - first explicitly remove the non-default MAC, then set default one.
> - document default and non-default MAC address
>
> v2:
> - fixed commit log.
>
> ---
> lib/ethdev/ethdev_driver.h | 7 ++++++-
> lib/ethdev/rte_ethdev.c | 41 ++++++++++++++++++++++++++++++++++++--
> 2 files changed, 45 insertions(+), 3 deletions(-)
>
> diff --git a/lib/ethdev/ethdev_driver.h b/lib/ethdev/ethdev_driver.h
> index 1300acc95d..6291be783c 100644
> --- a/lib/ethdev/ethdev_driver.h
> +++ b/lib/ethdev/ethdev_driver.h
> @@ -116,7 +116,12 @@ struct rte_eth_dev_data {
>
> uint64_t rx_mbuf_alloc_failed; /**< Rx ring mbuf allocation failures */
>
> - /** Device Ethernet link address. @see rte_eth_dev_release_port() */
> + /**
> + * Device Ethernet link address. The index zero of the array is as the
> + * index of the default address, and other indexes can't be the same
> + * as the address corresponding to index 0.
> + * @see rte_eth_dev_release_port()
> + */
> struct rte_ether_addr *mac_addrs;
> /** Bitmap associating MAC addresses to pools */
> uint64_t mac_pool_sel[RTE_ETH_NUM_RECEIVE_MAC_ADDR];
> diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
> index 5d5e18db1e..be4b37c9c1 100644
> --- a/lib/ethdev/rte_ethdev.c
> +++ b/lib/ethdev/rte_ethdev.c
> @@ -4498,7 +4498,10 @@ rte_eth_dev_mac_addr_remove(uint16_t port_id, struct
> rte_ether_addr *addr)
> int
> rte_eth_dev_default_mac_addr_set(uint16_t port_id, struct rte_ether_addr
> *addr)
> {
> + uint64_t mac_pool_sel_bk = 0;
> struct rte_eth_dev *dev;
> + uint32_t pool;
> + int index;
> int ret;
>
> RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
> @@ -4517,16 +4520,50 @@ rte_eth_dev_default_mac_addr_set(uint16_t port_id,
> struct rte_ether_addr *addr)
> if (*dev->dev_ops->mac_addr_set == NULL)
> return -ENOTSUP;
>
> + /*
> + * If the address has been added as a non-default MAC address by
> + * rte_eth_dev_mac_addr_add API, it should be removed from
> + * dev->data->mac_addrs[].
> + */
> + index = eth_dev_get_mac_addr_index(port_id, addr);
> + if (index > 0) {
> + /* Remove address in dev data structure */
> + mac_pool_sel_bk = dev->data->mac_pool_sel[index];
> + ret = rte_eth_dev_mac_addr_remove(port_id, addr);
> + if (ret < 0) {
> + RTE_ETHDEV_LOG(ERR, "Delete MAC address from the MAC
> list of ethdev port %u.\n",
> + port_id);
> + return ret;
> + }
> + /* Reset pool bitmap */
> + dev->data->mac_pool_sel[index] = 0;
> + }
> ret = (*dev->dev_ops->mac_addr_set)(dev, addr);
> if (ret < 0)
> - return ret;
> + goto out;
>
> /* Update default address in NIC data structure */
> rte_ether_addr_copy(addr, &dev->data->mac_addrs[0]);
>
> return 0;
> -}
>
> +out:
> + if (index > 0) {
> + pool = 0;
> + do {
> + if (mac_pool_sel_bk & UINT64_C(1)) {
> + if (rte_eth_dev_mac_addr_add(port_id, addr,
> + pool) != 0)
> + RTE_ETHDEV_LOG(ERR, "failed to restore
> MAC pool id(%u) in port %u.\n",
> + pool, port_id);
> + }
> + mac_pool_sel_bk >>= 1;
> + pool++;
> + } while (mac_pool_sel_bk != 0);
> + }
> +
> + return ret;
> +}
>
> /*
> * Returns index into MAC address array of addr. Use 00:00:00:00:00:00 to
> find
>
