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Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.13.1 Subject: Re: [PATCH V7 net-next 0/6] ethtool: add support to set/get tx copybreak buf size and rx buf len Content-Language: en-US To: Guangbin Huang , davem@davemloft.net, kuba@kernel.org, mkubecek@suse.cz, andrew@lunn.ch, amitc@mellanox.com, idosch@idosch.org, danieller@nvidia.com, jesse.brandeburg@intel.com, anthony.l.nguyen@intel.com, jdike@addtoit.com, richard@nod.at, anton.ivanov@cambridgegreys.com, netanel@amazon.com, akiyano@amazon.com, gtzalik@amazon.com, saeedb@amazon.com, chris.snook@gmail.com, ulli.kroll@googlemail.com, linus.walleij@linaro.org, jeroendb@google.com, csully@google.com, awogbemila@google.com, jdmason@kudzu.us, rain.1986.08.12@gmail.com, zyjzyj2000@gmail.com, kys@microsoft.com, haiyangz@microsoft.com, mst@redhat.com, jasowang@redhat.com, doshir@vmware.com, pv-drivers@vmware.com, jwi@linux.ibm.com, kgraul@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com, johannes@sipsolutions.net Cc: netdev@vger.kernel.org, lipeng321@huawei.com, chenhao288@hisilicon.com, linux-s390@vger.kernel.org References: <20211118121245.49842-1-huangguangbin2@huawei.com> From: Gal Pressman In-Reply-To: <20211118121245.49842-1-huangguangbin2@huawei.com> Content-Type: text/plain; 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Use ethtool --get-tunable command to get it, and ethtool > --set-tunable command to set it, examples are as follow: > > 1. set tx spare buf size to 102400: > $ ethtool --set-tunable eth1 tx-buf-size 102400 > > 2. get tx spare buf size: > $ ethtool --get-tunable eth1 tx-buf-size > tx-buf-size: 102400 Hi Guangbin, Can you please clarify the difference between TX copybreak and TX copybreak buf size?