From: "lihuisong (C)" <lihuisong@huawei.com>
To: Thomas Monjalon <thomas@monjalon.net>
Cc: <dev@dpdk.org>, <andrew.rybchenko@oktetlabs.ru>,
<ferruh.yigit@amd.com>, <liudongdong3@huawei.com>,
<huangdaode@huawei.com>
Subject: Re: [PATCH V5] ethdev: fix one address occupies two indexes in MAC addrs
Date: Thu, 19 Jan 2023 17:57:55 +0800 [thread overview]
Message-ID: <12cc8e2a-fa7a-44a6-981a-ee91c50faafc@huawei.com> (raw)
In-Reply-To: <2944156.uZKlY2gecq@thomas>
在 2023/1/18 16:26, Thomas Monjalon 写道:
> 20/10/2022 11:31, Huisong Li:
>> 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
> I agree it would be simpler to ensure that the addresses are uniques.
>
>> 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.
> If MAC3 is not removed with rte_eth_dev_mac_addr_remove() by the app,
> MAC3 packets should be received.
> The MAC address should not be removed by the PMD.
>
>> So this patch adds a remove operation in set default MAC API documents
>> this behavior.
> Let's be clear here: only the new default address is removed from the rest of the list.
>
>> Fixes: 854d8ad4ef68 ("ethdev: add default mac address modifier")
>> Cc: stable@dpdk.org
>> --- 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
> It should be "addresses" as there can be multiple.
>
> What means "as" above?
> Can we say the first entry (index zero) is the default address?
>
>> + * index of the default address, and other indexes can't be the same
> You can split the sentence in 2 instead of ", and".
> indexes -> entries
> can't -> cannot
>
>> + * as the address corresponding to index 0.
> simpler: as the default address.
>
>> + * @see rte_eth_dev_release_port()
> Why referencing this function here?
>
>> + */
>> --- 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[].
>> + */
> Make is simpler:
> "Keep address unique in dev->data->mac_addrs[]."
Ack
>
>> + 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);
> It is not clear with this log that it failed.
Adjust as follows?
"Delete old address entry from the MAC list of ethdev port %u.\n"
>
>> + return ret;
>> + }
>> + /* Reset pool bitmap */
>> + dev->data->mac_pool_sel[index] = 0;
> mac_pool_sel[index] is already reset in rte_eth_dev_mac_addr_remove().
Yes, this can be deleted.
>
>> + }
>> 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;
>> +}
> Can we avoid this rollback by removing the address after mac_addr_set() succeed?
No, the new default address will be removed if we do that.
we need to remove it first if the new default address has been added as a
non-default MAC address to the MAC list.
>
>
>
> .
next prev parent reply other threads:[~2023-01-19 9:58 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-22 3:36 [dpdk-dev] [PATCH] ethdev: fix one MAC address occupies two index in mac addrs Min Hu (Connor)
2021-09-22 6:39 ` Andrew Rybchenko
2021-09-22 7:43 ` Huisong Li
2021-09-22 8:02 ` Andrew Rybchenko
2021-09-22 9:48 ` Huisong Li
2021-10-05 19:21 ` Thomas Monjalon
2021-10-08 7:02 ` Min Hu (Connor)
2021-10-08 10:04 ` Thomas Monjalon
2021-10-09 9:53 ` Min Hu (Connor)
2021-10-11 9:02 ` Thomas Monjalon
2021-10-11 9:28 ` [dpdk-dev] [PATCH v2] " Min Hu (Connor)
2021-10-11 10:35 ` Thomas Monjalon
2021-10-12 2:58 ` lihuisong (C)
2021-10-12 7:14 ` Thomas Monjalon
2021-10-15 2:00 ` lihuisong (C)
2021-10-19 17:45 ` Ferruh Yigit
2021-10-20 6:49 ` lihuisong (C)
2021-10-20 7:41 ` Ferruh Yigit
2021-10-20 10:15 ` Kevin Traynor
2021-10-20 16:32 ` Ferruh Yigit
2021-10-21 2:05 ` lihuisong (C)
2021-10-21 8:30 ` Ferruh Yigit
2021-10-22 2:04 ` lihuisong (C)
2021-10-26 10:21 ` Ferruh Yigit
2021-11-08 6:55 ` lihuisong (C)
2022-04-25 6:42 ` Min Hu (Connor)
2022-10-20 9:31 ` [PATCH V5] ethdev: fix one address occupies two indexes in MAC addrs Huisong Li
2022-11-16 7:37 ` lihuisong (C)
2022-12-06 8:08 ` lihuisong (C)
2023-01-10 1:00 ` fengchengwen
2023-01-18 8:26 ` Thomas Monjalon
2023-01-18 8:38 ` Thomas Monjalon
2023-01-19 10:09 ` lihuisong (C)
2023-01-19 9:57 ` lihuisong (C) [this message]
2023-01-19 14:38 ` Thomas Monjalon
2023-01-28 1:38 ` lihuisong (C)
2023-01-31 6:41 ` [PATCH V6] ethdev: fix one address occupies two entries " Huisong Li
2023-02-01 10:42 ` Thomas Monjalon
2023-02-01 12:26 ` lihuisong (C)
2023-02-01 13:15 ` [PATCH V7] " Huisong Li
2023-02-01 16:37 ` Thomas Monjalon
2023-02-02 1:11 ` lihuisong (C)
2023-02-02 11:50 ` Thomas Monjalon
2023-02-02 12:19 ` lihuisong (C)
2023-02-02 12:36 ` [PATCH V8] " Huisong Li
2023-02-02 13:11 ` Thomas Monjalon
2023-02-02 18:09 ` Ferruh Yigit
2023-02-02 21:10 ` Thomas Monjalon
2023-02-02 21:50 ` Morten Brørup
2023-02-03 1:56 ` lihuisong (C)
2023-02-03 12:58 ` Ferruh Yigit
2023-02-04 2:57 ` lihuisong (C)
2023-02-09 8:32 ` lihuisong (C)
2023-02-09 12:45 ` Ferruh Yigit
2023-02-10 9:54 ` lihuisong (C)
2023-02-10 12:27 ` Ferruh Yigit
2023-02-10 13:20 ` lihuisong (C)
2023-05-16 11:47 ` lihuisong (C)
2023-05-16 14:13 ` Ferruh Yigit
2023-05-17 7:45 ` lihuisong (C)
2023-05-17 8:53 ` Ferruh Yigit
2023-05-17 11:46 ` lihuisong (C)
2023-05-17 13:43 ` Ferruh Yigit
2023-05-19 3:00 ` [PATCH V9] " Huisong Li
2023-05-19 8:42 ` Ferruh Yigit
2023-05-19 9:21 ` lihuisong (C)
2023-05-19 9:31 ` [PATCH V10] " Huisong Li
2023-05-19 10:45 ` Ferruh Yigit
2022-05-14 2:00 ` [PATCH V3 0/2] ethdev: fix MAC addrs list Min Hu (Connor)
2022-05-14 2:00 ` [PATCH V3 1/2] ethdev: fix one address occupies two indexes in MAC addrs Min Hu (Connor)
2022-05-14 2:00 ` [PATCH V3 2/2] ethdev: document default and non-default MAC address Min Hu (Connor)
2022-05-31 15:22 ` [PATCH V3 0/2] ethdev: fix MAC addrs list Andrew Rybchenko
2022-06-01 6:43 ` Min Hu (Connor)
2022-06-01 6:39 ` [PATCH v4 " Min Hu (Connor)
2022-06-01 6:39 ` [PATCH v4 1/2] ethdev: fix one address occupies two indexes in MAC addrs Min Hu (Connor)
2022-06-01 17:49 ` Andrew Rybchenko
2022-06-02 3:16 ` lihuisong (C)
2022-06-02 13:54 ` Andrew Rybchenko
2022-06-11 9:04 ` lihuisong (C)
2022-06-01 6:39 ` [PATCH v4 2/2] ethdev: document default and non-default MAC address Min Hu (Connor)
2022-06-01 17:49 ` Andrew Rybchenko
2022-06-01 17:49 ` [PATCH v4 0/2] ethdev: fix MAC addrs list Andrew Rybchenko
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