From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f200.google.com (mail-pf1-f200.google.com [209.85.210.200]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8130042EEDA for ; Fri, 31 Jul 2026 17:51:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785520314; cv=none; b=bBOeFdLyvlYNGwo34c4C1Tm+nSc0MpZmoMlGAcpJ1k0CjF5zRI1BhE8mc1U+YHZR+aLy+LW7w+vwYZJjgQCObOk2J0eNw75jUvbol5JqCEB4jjudWAP9Zrc1272TliMFJlQ9tRpyJhVL/7+Ab3fuFTpPV9aPIB7BDR9Gi4Tj2yw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785520314; c=relaxed/simple; bh=Q9W97QAmcHnM41W/CvDhiiLsOea2EQnPuDC13yTFxkc=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=VnjflXFNJyBCGikUucISNZ556OsDVsCSseBul0w0uJvn4HbL4/XcZOD218TtxjnLY57s8SX7QJdJMvZV/5cGMDZNhNln+24Z/a/a2s/1/SNv6hiHqDmZv2y9dOKbpPdy9OA2oZRSpEdblzwFr27v6KITeveEyn5zjXo7+Uxz9Zc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--shivajikant.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=Kb25Ybrv; arc=none smtp.client-ip=209.85.210.200 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--shivajikant.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="Kb25Ybrv" Received: by mail-pf1-f200.google.com with SMTP id d2e1a72fcca58-84a67b16217so2479880b3a.3 for ; Fri, 31 Jul 2026 10:51:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1785520312; x=1786125112; darn=vger.kernel.org; h=content-type:cc:to:from:subject:message-id:mime-version:date:from :to:cc:subject:date:message-id:reply-to:content-type; bh=ghViwiNni4mAFdNIXCmPgEVk4aapNFIVXabsvlrQZCo=; b=Kb25Ybrvlca0elRLb26io1Ji8uWWuBOYFaj+A8i775V+PQGFbCttYXuXEWR2BSEnNR YgicVgVk0fexCb4H+LpW37tGlqJqrsHrkYjhJlJrl+EDIJExi/pF4qrB9IK9dhe1rhrO mmy7SgdHBYPt6O45bcoHWw23YMTR3AN2+SNZG2StHSdrE/obyquRHz2a6W3TptyWwQm5 YvXhFr2XFYsPoZQlZtRZqYv+Kg61toSXJHAFNFrCoUR9cFB2HrPItF4LhlUZUzwR6fkG JURmCAIrJ/M+zASbCxwCQ2Pidy2w44WfwsSGBKfaxOZFUZ305h2m8QIuYD4mS9to5BvS fOEg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1785520312; x=1786125112; h=content-type:cc:to:from:subject:message-id:mime-version:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=ghViwiNni4mAFdNIXCmPgEVk4aapNFIVXabsvlrQZCo=; b=RkI/mB67xLW6MQNikM1uAIbdQgc+ZnMdrpZPE38L9qVtHDiSA/e/4sYg8vDz7EFLHl Gys5tKKNIKuRxMVyo63PzRxFiC3Vk2ukyEE30dffDLtySisvZd7hgmq1FMK3grt3HXb8 TXxeR4sZ9KJBNewheSYeI8l7ue2XI9YMok2QGuEl6mtl3a35aYkhopWogwchHLILgnph YWnPgwamw/PHS44wLqbbQwiKRhEN68eKHH8MUGSAplsMXhyIbnhaJCBw9iqAtQLDeK+H Y9sPqjEewDTTCnljbaY2gldMgya5oAPfv6aNG7LwYzUC5JzrrjHuYTlaDSExqjwMUulw Osng== X-Forwarded-Encrypted: i=1; AHgh+RoRpiRM/5ux2u1DqFefo3nqg2xwkXILOWdK+Kod4vG0PO0Bm5h/spAWUitVamRLdfrWYmPQT+Y2Z4ryRgE=@vger.kernel.org X-Gm-Message-State: AOJu0YyPOczndqmGLlf91mLSZuqV006Qb5RwTenlc59s9aN0Gby836PE D2afdiDlqfMr1QAyYVbcL7Bp5KjyXB/ejnHmwtRekwo6k97rjGDxy20wHtZYafsfHusihnDN/7U Ve/eX9+/sQF44nQniSqLI4lHwzA== X-Received: from pggr14.prod.google.com ([2002:a63:d90e:0:b0:c8f:f76a:4b22]) (user=shivajikant job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a00:a92:b0:848:75a1:a0fa with SMTP id d2e1a72fcca58-84ee49bc5a4mr468215b3a.67.1785520311343; Fri, 31 Jul 2026 10:51:51 -0700 (PDT) Date: Fri, 31 Jul 2026 17:51:33 +0000 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.55.0.508.g3f0d502094-goog Message-ID: <20260731175141.284757-1-shivajikant@google.com> Subject: [PATCH net-next 1/2] bpf: Allow IP_TRANSPARENT and IPV6_TRANSPARENT in bpf_{set,get}sockopt() From: Shivaji Kant To: bpf@vger.kernel.org Cc: netdev@vger.kernel.org, kuniyu@google.com, anubhavsinggh@google.com, Shivaji Kant , Daniel Borkmann , John Fastabend , Stanislav Fomichev , Martin KaFai Lau , Alexei Starovoitov , Andrii Nakryiko , Eduard Zingerman , Kumar Kartikeya Dwivedi , Song Liu , Yonghong Song , Jiri Olsa , Emil Tsalapatis , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , open list Content-Type: text/plain; charset="UTF-8" Currently, bpf_setsockopt() and bpf_getsockopt() for SOL_IP and SOL_IPV6 only allow a small subset of socket options (such as IP_TOS, IPV6_TCLASS, and IPV6_AUTOFLOWLABEL). Calling bpf_setsockopt() with IP_TRANSPARENT or IPV6_TRANSPARENT fails with -EINVAL. Transparent proxying (TPROXY) and related networking components often rely on IP_TRANSPARENT and IPV6_TRANSPARENT to enable binding sockets to non-local IP addresses. Allow IP_TRANSPARENT for SOL_IP in sol_ip_sockopt() and IPV6_TRANSPARENT for SOL_IPV6 in sol_ipv6_sockopt(). Tested-by: Anubhav Singh Signed-off-by: Shivaji Kant --- net/core/filter.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/core/filter.c b/net/core/filter.c index 11bb0d236822..5a5980c671f3 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -5640,6 +5640,7 @@ static int sol_ip_sockopt(struct sock *sk, int optname, switch (optname) { case IP_TOS: + case IP_TRANSPARENT: if (*optlen != sizeof(int)) return -EINVAL; break; @@ -5666,6 +5667,7 @@ static int sol_ipv6_sockopt(struct sock *sk, int optname, switch (optname) { case IPV6_TCLASS: case IPV6_AUTOFLOWLABEL: + case IPV6_TRANSPARENT: if (*optlen != sizeof(int)) return -EINVAL; break; -- 2.55.0.508.g3f0d502094-goog