On 6/20/20 9:53 AM, Wei Hu (Xavier) wrote:
> Currently, there is a potential problem that calling the API function
> rte_eth_dev_set_vlan_offload to start VLAN hardware offloads which the
> driver does not support. If the PMD driver does not support certain VLAN
> hardware offloads and does not check for it, the hardware setting will
> not change, but the VLAN offloads in dev->data->dev_conf.rxmode.offloads
> will be turned on.
>
> It is supposed to check the hardware capabilities to decide whether the
> relative callback needs to be called just like the behavior in the API
> function named rte_eth_dev_configure. And it is also needed to cleanup
> duplicated checks which are done in some PMDs.
>
> Fixes: a4996bd89c42 ("ethdev: new Rx/Tx offloads API")
> Cc: sta...@dpdk.org
>
> Signed-off-by: Chengchang Tang <tangchengch...@huawei.com>
> Signed-off-by: Wei Hu (Xavier) <xavier.hu...@huawei.com>
For ethdev part:
Acked-by: Andrew Rybchenko <arybche...@solarflare.com>
I'd like to highlight that it is behaviour change for some PMDs
which simply ignore (with error/warning log message)
unsupported VLAN offloads, but now it will fail. We should
very carefully consider backporting of these changes.
I'd say we should, since it is rather a bug fix.
IMHO, it is better to send v3 using
--to-cmd ./devtools/get-maintainer.sh
in order to have all driver maintainers in To.
> ---
> v1 -> v2: cleanup duplicated checks which are done in som PMDs.
> ---
> drivers/net/dpaa2/dpaa2_ethdev.c | 5 -----
> drivers/net/enic/enic_ethdev.c | 12 ------------
> drivers/net/fm10k/fm10k_ethdev.c | 20 --------------------
> drivers/net/hinic/hinic_pmd_ethdev.c | 6 ------
> drivers/net/i40e/i40e_ethdev.c | 5 -----
> drivers/net/nfp/nfp_net.c | 5 -----
> drivers/net/octeontx/octeontx_ethdev_ops.c | 10 ----------
> drivers/net/octeontx2/otx2_vlan.c | 5 -----
> drivers/net/qede/qede_ethdev.c | 3 ---
> lib/librte_ethdev/rte_ethdev.c | 21 +++++++++++++++++++++
> 10 files changed, 21 insertions(+), 71 deletions(-)
>
> diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c
> b/drivers/net/dpaa2/dpaa2_ethdev.c
> index 2f031ec..da5018f 100644
> --- a/drivers/net/dpaa2/dpaa2_ethdev.c
> +++ b/drivers/net/dpaa2/dpaa2_ethdev.c
> @@ -169,11 +169,6 @@ dpaa2_vlan_offload_set(struct rte_eth_dev *dev, int mask)
> DPAA2_PMD_INFO("Unable to set vlan filter = %d", ret);
> }
> next_mask:
> - if (mask & ETH_VLAN_EXTEND_MASK) {
> - if (dev->data->dev_conf.rxmode.offloads &
> - DEV_RX_OFFLOAD_VLAN_EXTEND)
> - DPAA2_PMD_INFO("VLAN extend offload not supported");
> - }
>
> return 0;
> }
> diff --git a/drivers/net/enic/enic_ethdev.c b/drivers/net/enic/enic_ethdev.c
> index 32d5397..ef8900d 100644
> --- a/drivers/net/enic/enic_ethdev.c
> +++ b/drivers/net/enic/enic_ethdev.c
> @@ -374,18 +374,6 @@ static int enicpmd_vlan_offload_set(struct rte_eth_dev
> *eth_dev, int mask)
> enic->ig_vlan_strip_en = 0;
> }
>
> - if ((mask & ETH_VLAN_FILTER_MASK) &&
> - (offloads & DEV_RX_OFFLOAD_VLAN_FILTER)) {
> - dev_warning(enic,
> - "Configuration of VLAN filter is not supported\n");
> - }
> -
> - if ((mask & ETH_VLAN_EXTEND_MASK) &&
> - (offloads & DEV_RX_OFFLOAD_VLAN_EXTEND)) {
> - dev_warning(enic,
> - "Configuration of extended VLAN is not supported\n");
> - }
> -
> return enic_set_vlan_strip(enic);
> }
>
> diff --git a/drivers/net/fm10k/fm10k_ethdev.c
> b/drivers/net/fm10k/fm10k_ethdev.c
> index f537ab2..47f6f76 100644
> --- a/drivers/net/fm10k/fm10k_ethdev.c
> +++ b/drivers/net/fm10k/fm10k_ethdev.c
> @@ -1577,26 +1577,6 @@ fm10k_vlan_filter_set(struct rte_eth_dev *dev,
> uint16_t vlan_id, int on)
> static int
> fm10k_vlan_offload_set(struct rte_eth_dev *dev, int mask)
> {
> - if (mask & ETH_VLAN_STRIP_MASK) {
> - if (!(dev->data->dev_conf.rxmode.offloads &
> - DEV_RX_OFFLOAD_VLAN_STRIP))
> - PMD_INIT_LOG(ERR, "VLAN stripping is "
> - "always on in fm10k");
> - }
> -
> - if (mask & ETH_VLAN_EXTEND_MASK) {
> - if (dev->data->dev_conf.rxmode.offloads &
> - DEV_RX_OFFLOAD_VLAN_EXTEND)
> - PMD_INIT_LOG(ERR, "VLAN QinQ is not "
> - "supported in fm10k");
> - }
> -
> - if (mask & ETH_VLAN_FILTER_MASK) {
> - if (!(dev->data->dev_conf.rxmode.offloads &
> - DEV_RX_OFFLOAD_VLAN_FILTER))
> - PMD_INIT_LOG(ERR, "VLAN filter is always on in fm10k");
> - }
> -
> return 0;
> }
>
> diff --git a/drivers/net/hinic/hinic_pmd_ethdev.c
> b/drivers/net/hinic/hinic_pmd_ethdev.c
> index 0c3e1c0..0009a61 100644
> --- a/drivers/net/hinic/hinic_pmd_ethdev.c
> +++ b/drivers/net/hinic/hinic_pmd_ethdev.c
> @@ -1701,12 +1701,6 @@ static int hinic_vlan_offload_set(struct rte_eth_dev
> *dev, int mask)
> nic_dev->proc_dev_name, dev->data->port_id);
> }
>
> - if (mask & ETH_VLAN_EXTEND_MASK) {
> - PMD_DRV_LOG(ERR, "Don't support vlan qinq, device: %s, port_id:
> %d",
> - nic_dev->proc_dev_name, dev->data->port_id);
> - return -ENOTSUP;
> - }
> -
> return 0;
> }
>
> diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
> index 970a31c..9211cf5 100644
> --- a/drivers/net/i40e/i40e_ethdev.c
> +++ b/drivers/net/i40e/i40e_ethdev.c
> @@ -3877,11 +3877,6 @@ i40e_vlan_offload_set(struct rte_eth_dev *dev, int
> mask)
> struct i40e_vsi *vsi = pf->main_vsi;
> struct rte_eth_rxmode *rxmode;
>
> - if (mask & ETH_QINQ_STRIP_MASK) {
> - PMD_DRV_LOG(ERR, "Strip qinq is not supported.");
> - return -ENOTSUP;
> - }
> -
> rxmode = &dev->data->dev_conf.rxmode;
> if (mask & ETH_VLAN_FILTER_MASK) {
> if (rxmode->offloads & DEV_RX_OFFLOAD_VLAN_FILTER)
> diff --git a/drivers/net/nfp/nfp_net.c b/drivers/net/nfp/nfp_net.c
> index 2460ee1..b7a91ae 100644
> --- a/drivers/net/nfp/nfp_net.c
> +++ b/drivers/net/nfp/nfp_net.c
> @@ -2353,11 +2353,6 @@ nfp_net_vlan_offload_set(struct rte_eth_dev *dev, int
> mask)
> hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
> new_ctrl = 0;
>
> - if ((mask & ETH_VLAN_FILTER_OFFLOAD) ||
> - (mask & ETH_VLAN_EXTEND_OFFLOAD))
> - PMD_DRV_LOG(INFO, "No support for ETH_VLAN_FILTER_OFFLOAD or"
> - " ETH_VLAN_EXTEND_OFFLOAD");
> -
> /* Enable vlan strip if it is not configured yet */
> if ((mask & ETH_VLAN_STRIP_OFFLOAD) &&
> !(hw->ctrl & NFP_NET_CFG_CTRL_RXVLAN))
> diff --git a/drivers/net/octeontx/octeontx_ethdev_ops.c
> b/drivers/net/octeontx/octeontx_ethdev_ops.c
> index ff627a6..dbe13ce 100644
> --- a/drivers/net/octeontx/octeontx_ethdev_ops.c
> +++ b/drivers/net/octeontx/octeontx_ethdev_ops.c
> @@ -43,16 +43,6 @@ octeontx_dev_vlan_offload_set(struct rte_eth_dev *dev, int
> mask)
>
> rxmode = &dev->data->dev_conf.rxmode;
>
> - if (mask & ETH_VLAN_EXTEND_MASK) {
> - octeontx_log_err("Extend offload not supported");
> - return -ENOTSUP;
> - }
> -
> - if (mask & ETH_VLAN_STRIP_MASK) {
> - octeontx_log_err("VLAN strip offload not supported");
> - return -ENOTSUP;
> - }
> -
> if (mask & ETH_VLAN_FILTER_MASK) {
> if (rxmode->offloads & DEV_RX_OFFLOAD_VLAN_FILTER) {
> rc = octeontx_vlan_hw_filter(nic, true);
> diff --git a/drivers/net/octeontx2/otx2_vlan.c
> b/drivers/net/octeontx2/otx2_vlan.c
> index 322a565..7357b06 100644
> --- a/drivers/net/octeontx2/otx2_vlan.c
> +++ b/drivers/net/octeontx2/otx2_vlan.c
> @@ -717,11 +717,6 @@ otx2_nix_vlan_offload_set(struct rte_eth_dev *eth_dev,
> int mask)
>
> rxmode = ð_dev->data->dev_conf.rxmode;
>
> - if (mask & ETH_VLAN_EXTEND_MASK) {
> - otx2_err("Extend offload not supported");
> - return -ENOTSUP;
> - }
> -
> if (mask & ETH_VLAN_STRIP_MASK) {
> if (rxmode->offloads & DEV_RX_OFFLOAD_VLAN_STRIP) {
> offloads |= DEV_RX_OFFLOAD_VLAN_STRIP;
> diff --git a/drivers/net/qede/qede_ethdev.c b/drivers/net/qede/qede_ethdev.c
> index c4f8f12..04d17c7 100644
> --- a/drivers/net/qede/qede_ethdev.c
> +++ b/drivers/net/qede/qede_ethdev.c
> @@ -1036,9 +1036,6 @@ static int qede_vlan_offload_set(struct rte_eth_dev
> *eth_dev, int mask)
> }
> }
>
> - if (mask & ETH_VLAN_EXTEND_MASK)
> - DP_ERR(edev, "Extend VLAN not supported\n");
> -
> qdev->vlan_offload_mask = mask;
>
> DP_INFO(edev, "VLAN offload mask %d\n", mask);
> diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
> index b0b0474..bf79749 100644
> --- a/lib/librte_ethdev/rte_ethdev.c
> +++ b/lib/librte_ethdev/rte_ethdev.c
> @@ -3260,12 +3260,14 @@ rte_eth_dev_set_vlan_ether_type(uint16_t port_id,
> int
> rte_eth_dev_set_vlan_offload(uint16_t port_id, int offload_mask)
> {
> + struct rte_eth_dev_info dev_info;
> struct rte_eth_dev *dev;
> int ret = 0;
> int mask = 0;
> int cur, org = 0;
> uint64_t orig_offloads;
> uint64_t dev_offloads;
> + uint64_t new_offloads;
>
> RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
> dev = &rte_eth_devices[port_id];
> @@ -3319,6 +3321,25 @@ rte_eth_dev_set_vlan_offload(uint16_t port_id, int
> offload_mask)
> if (mask == 0)
> return ret;
>
> + ret = rte_eth_dev_info_get(port_id, &dev_info);
> + if (ret != 0)
> + return ret;
> +
> + /*
> + * New added Rx VLAN offloading which are not enabled in
> + * rte_eth_dev_configure() must be within its device capabilities
> + */
> + if ((dev_offloads & dev_info.rx_offload_capa) != dev_offloads) {
> + new_offloads = dev_offloads & ~orig_offloads;
> + RTE_ETHDEV_LOG(ERR,
> + "Ethdev port_id=%u requested new added VLAN offloads "
> + "0x%" PRIx64 " must be within Rx offloads capabilities "
> + "0x%" PRIx64 " in %s()\n",
> + port_id, new_offloads, dev_info.rx_offload_capa,
> + __func__);
> + return -EINVAL;
> + }
> +
> RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->vlan_offload_set, -ENOTSUP);
> dev->data->dev_conf.rxmode.offloads = dev_offloads;
> ret = (*dev->dev_ops->vlan_offload_set)(dev, mask);
>
