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SMEX-12.5.0.1300-8.5.1020-25490.003 X-TM-AS-Result: No-13.597500-8.000000-10 X-TMASE-MatchedRID: gzVbiXtWD9v8lQjD/R2Nt/ZvT2zYoYOwC/ExpXrHizwjRiu1AuxJTO1G wkcQ/lISB8MPcT5elBVdxTB007Mf9oH/9PEJqVb6hLMcPZH93bwEa8g1x8eqF8iVWbUzz8oFKtm rdeo+nYP+x3dQ/lCKY77w6VW6L8NzjHHp3pfy0npqVGpA+EcxPjoSfZud5+GgDfheddyhsqv4v0 Dh0LIwCUAb3uOVANQRGaPTprKXNzInk35pd9o9Uujl+xhc/R9QIiTd2l7lf6HM/0sSqPZieDxa9 vSF/swfVAcEcjIJLbh89TdlEx5sK5xrC9yM592KSUAFemq7B2UmKH/Kj46+VRgxf9+T3i9bfkah p1DusKBizyVYZyl+C49CL1e45ag4Z28ZQS4q9Jzm96eHJyFxjebgeTUIutPHMAmzHUrPkB5oZEs KcpKKlc7w9dYcCDW5t8GYkovn7dNY1B7Vsu7x2Yph1hAtvKZNWNbBpQ++I1nRcLzQc/tbXqPFjJ EFr+olA9Mriq0CDAgBi3kqJOK62QtuKBGekqUpI/NGWt0UYPDIbKIQ5LP8lb7iqTzFqOyTa+75r SnIV8EpivgqaMZiIVrVflnGTvH9 X-TM-AS-User-Approved-Sender: Yes X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--13.597500-8.000000 X-TMASE-Version: SMEX-12.5.0.1300-8.5.1020-25490.003 X-MDID: 1592555858-qwjL4XxzYAhm Subject: Re: [dpdk-dev] [PATCH 2/2] ethdev: fix VLAN offloads set if no relative capabilities X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On 6/19/20 6:42 AM, Wei Hu (Xavier) wrote: > From: Chengchang Tang > > Currently, there is a potential problem that calling the API function > rte_eth_dev_set_vlan_offload to start a vlan hardware offloads which the > driver does not support. if the PMD driver does not support the relative > hardware offloads and does not check for it, the hardware setting will > not change, but the relative offload in dev->data->dev_conf.rxmode.offloads > will be turned on. I'm sorry, but I don't understand what 'relative' means in the context. Also, please, use 'VLAN' instead of 'vlan' in the description and log message below. > 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. I think the direction of the fix is right, but it definitely duplicates checks which are done in some PMDs. I think that it would be good to do the cleanup in follow up patches. > Fixes: 81f9db8ecc2c ("ethdev: add vlan offload support") Most likely it is incorrect, since generic Rx offloads were introduced later. > Cc: stable@dpdk.org > > Signed-off-by: Chengchang Tang > Signed-off-by: Wei Hu (Xavier) > --- > lib/librte_ethdev/rte_ethdev.c | 21 +++++++++++++++++++++ > 1 file changed, 21 insertions(+) > > diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c > index 122fd2a..5176a0e 100644 > --- a/lib/librte_ethdev/rte_ethdev.c > +++ b/lib/librte_ethdev/rte_ethdev.c > @@ -3261,12 +3261,14 @@ 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]; > @@ -3320,6 +3322,25 @@ 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); >