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[70.114.247.242]) by smtp.gmail.com with ESMTPSA id 006d021491bc7-5eb8aa2f668sm340542eaf.44.2024.10.18.11.20.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Oct 2024 11:20:27 -0700 (PDT) From: Denis Kenzior To: netdev@vger.kernel.org Cc: denkenz@gmail.com, Marcel Holtmann , Andy Gross , Manivannan Sadhasivam , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH v1 08/10] net: qrtr: Drop remote {NEW|DEL}_LOOKUP messages Date: Fri, 18 Oct 2024 13:18:26 -0500 Message-ID: <20241018181842.1368394-9-denkenz@gmail.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241018181842.1368394-1-denkenz@gmail.com> References: <20241018181842.1368394-1-denkenz@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" These messages are explicitly filtered out by the in-kernel name service (ns.c). Filter them out even earlier to save some CPU cycles. Signed-off-by: Denis Kenzior Reviewed-by: Marcel Holtmann Reviewed-by: Andy Gross --- net/qrtr/af_qrtr.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/net/qrtr/af_qrtr.c b/net/qrtr/af_qrtr.c index b2f9c25ba8f8..95c9679725ee 100644 --- a/net/qrtr/af_qrtr.c +++ b/net/qrtr/af_qrtr.c @@ -560,6 +560,11 @@ int qrtr_endpoint_post(struct qrtr_endpoint *ep, const= void *data, size_t len) if (!size || len !=3D ALIGN(size, 4) + hdrlen) goto err; =20 + /* Don't allow remote lookups */ + if (cb->type =3D=3D QRTR_TYPE_NEW_LOOKUP || + cb->type =3D=3D QRTR_TYPE_DEL_LOOKUP) + goto err; + if ((cb->type =3D=3D QRTR_TYPE_NEW_SERVER || cb->type =3D=3D QRTR_TYPE_RESUME_TX) && size < sizeof(struct qrtr_ctrl_pkt)) --=20 2.45.2