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AJvYcCUAXuJldUs+3FU1UC8Rx4g5ZG0AufwW0wLKsE2cPkBNWlW9NhhNMwSuyxCml3DR5VIHcBU=@vger.kernel.org, AJvYcCUuMWKfv6sU/2zobBuHicPvU0IhRqSCeK94iliOZqGIbl4+U+I5NeLFmOT3TO+AUgh0jNW5qp1X@vger.kernel.org X-Gm-Message-State: AOJu0YyouxSwnCX57725mIbqi1RB4Gv9M2enpG3+qZIS2+aRI8t7pss7 VyolUu41EdexTaWHsz9rEu7AZzcMg+ClE2mUw5mQnaqXuThIK4Pc8ObXS1VNvwIIW4/EMZd2I7b 7gEHRxf43XKqmlcuX2BWFAlHAqzPaHHc= X-Gm-Gg: ASbGncvNFxUYWlRGXjP+komJ/1UAGZ6RapKN5qkY6Eyp0C04WYrZn3Z3M2uPdpL57Nx Oqi87uerD6ZM5BPeMnbs5/yEHcnIpZKj0if76cj8Fv8HdzuIvQ6awvx3qv3vUofBU71xyI89TCt TSlGBxfcZuXdnK6AD2twSvrECuNN8C6SEGTf/FlJea87dTsfiJ2VkzTwLDMDRW/MuEkmDlLwKi/ 6vyD+pD6zPw4hvJTA== X-Google-Smtp-Source: AGHT+IExMlR5MelabTRsOc2tClv7n4gVBPnDMaSvf1Cqj6owFiytP1LId1+eNzapFTXoQP/Io+nkVOuNBDaBzXzB1Gk= X-Received: by 2002:a05:6e02:3499:b0:3e2:c345:17f2 with SMTP id e9e14a558f8ab-3e32fc7fa36mr18089175ab.3.1753225683585; Tue, 22 Jul 2025 16:08:03 -0700 (PDT) Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20250722135057.85386-1-kerneljasonxing@gmail.com> In-Reply-To: <20250722135057.85386-1-kerneljasonxing@gmail.com> From: Jason Xing Date: Wed, 23 Jul 2025 07:07:27 +0800 X-Gm-Features: Ac12FXza06BuAb0W28VQl1NaN6Z6Y25KJi_4nA0fzQz21BHQq_5MVFnMh8KihHA Message-ID: Subject: Re: [PATCH net v2 0/2] xsk: fix underflow issues in zerocopy xmit To: anthony.l.nguyen@intel.com, przemyslaw.kitszel@intel.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, bjorn@kernel.org, magnus.karlsson@intel.com, maciej.fijalkowski@intel.com, jonathan.lemon@gmail.com, sdf@fomichev.me, ast@kernel.org, daniel@iogearbox.net, hawk@kernel.org, john.fastabend@gmail.com, mcoquelin.stm32@gmail.com, alexandre.torgue@foss.st.com Cc: linux-stm32@st-md-mailman.stormreply.com, bpf@vger.kernel.org, intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org, Jason Xing Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, Jul 22, 2025 at 9:51=E2=80=AFPM Jason Xing wrote: > > From: Jason Xing > > Fix two underflow issues around {stmmac_xdp|igb}_xmit_zc(). > > Jason Xing (2): > stmmac: xsk: fix underflow of budget in zerocopy mode > igb: xsk: solve underflow of nb_pkts in zerocopy mode Willem has pointed out it's technically not underflow but the negative overflow[1]. So I decided to send a V3 patch with this modified. [1]: https://lore.kernel.org/all/687f9d4cf0b14_2aa7cc29443@willemb.c.google= rs.com.notmuch/ Thanks, Jason