From nobody Fri Dec 19 12:28:19 2025 Received: from mail-yw1-f179.google.com (mail-yw1-f179.google.com [209.85.128.179]) (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 3D57624BD03 for ; Wed, 5 Nov 2025 01:23:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.179 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762305807; cv=none; b=FZM/0ywLW1Yyk3zmBMmpRXVQyeVUACRxVliZlSQz7sccbkXjORU58IqIh8TW1r20FJ6gI+V/evznHBWgfAgPZ1/WlV39HWX2TXcloUqyUMPnsmp1vemufJS99kIaBwEyByFspBRMf9pJ+zFPVf63+8hQ3qGOQlPo0mvQQE7sLI8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762305807; c=relaxed/simple; bh=OvzNhBXxuWUIF6RvKnWgwOVCFYbwugbVchWt/Nz0HFY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=t/prt1awwiBgHpyS1f6JpBuWGOK5qsF0pPOGCTop5dmN5eY7kjwoU0AwRKwcF50G/y4uYH1TmJEzl6eRev62Rv26Wwg6WXtGIS3iwR/wvxKdTAPv3/JILzCagxHV5A6b1eCVAp10PYPoSiPD8yW7PyLmsZ5JWVqmxmrmf/C+oSs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=bbKiRJKa; arc=none smtp.client-ip=209.85.128.179 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="bbKiRJKa" Received: by mail-yw1-f179.google.com with SMTP id 00721157ae682-7864cef1976so6946777b3.0 for ; Tue, 04 Nov 2025 17:23:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1762305804; x=1762910604; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=v+SHvc7nB9HHEDm3HUCX6qil9+t5RGl5tlTHjTzf/d8=; b=bbKiRJKaCxxCePZ3MFJn14tbhBMXlMebKzsToyhvXUnlWvzLKWy9Ubg3yBBhnBKIcq 8ZshJNuCT1wcMTMMr2dEFKAkKKU+H33EKMe3Lsh+Fgy8m9rBL/fmKoNgZ5Rbh2UwTx8F 9f7ojtB+BrfUXQevhivZARAjJfSISBdNWuzgIY0IkqSfAs7qOzWbLIWg6oa6Y9yxgAT2 TTIouHeHrtH2g2ca40JQEiK0okNcM9dxpWgec5el7ndxmLLZ6hEBSkb25rkezMEjJ+xt KBYLg5rIq7aH1puTak7ss07+5q5+fx/YgK5gxuRLPTKBm1BLmMAsPahiQD7PlzMcR3GG 0P0w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1762305804; x=1762910604; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=v+SHvc7nB9HHEDm3HUCX6qil9+t5RGl5tlTHjTzf/d8=; b=hsV/gvajNfiRYa6zmw/oV8DJ9oE5C3v7XY0GWWmEsBKI4LFzGpsmeW7sbyIsVlz2C2 IXDscAabfn1Q8dX5XpLarqNHSwbwX1MsCYqM9eOU5k1MxFzyD72Yc8pefRp9xLna5AEL TXvo+JCu8I0WtkHejdLaVbYOeRisjYOEX8QYKPCFk/sxxtsVFNzNfC8SgSLh+4qJkrMz goxLP4B6gDFb2CXJY0e35/NrNvn0bQTs+emDtCOF26ql0Jx6xFpf6RJ6JNV9SjIrSPmC eTXGCyisFU1iROuKUHOAr3RplnmaiRJwK6ROKQ5xR4u4Qfqjm/w+O7qASv0IJ7Cro0Xl 82EA== X-Forwarded-Encrypted: i=1; AJvYcCXdLTi3UBN5Uv4UAYs2KdN4JldTxgPgrSWDM+NnM5cUVaMWXaiICTfcTP4dfLcPYzwY4JUObged8UVU49Y=@vger.kernel.org X-Gm-Message-State: AOJu0Yy5HhBeUY1l9GT06gr8b2F//9GUc8pd2BpZ65KQO1cVrLz4ftvN M0VVeyyhfloOPMmKEewFannekWJmgb0qWcHFtoEQZ44DpOS4P/hc5Ndf X-Gm-Gg: ASbGncuT0gpBqvh7F8WI/DzIuiKGHSC+yg9+eP9BuDiveXM5Rd9YMyEUMtGamJBlENy VTFfb6VC1AaRFa8plBPdeywcUajp1YbWy+Y2ATZ3BsxqyDEWWsxvhWSnPZ5zAKW6igRJXM+PPvK G3B1LgQMHg4KI4DcAza2Mo5olWSnx26+St6NOkUyehyO2m14N4VPow1IIOtJx6CwvbqXhBnMEgH iHs92P5xh9nQdLJKfPaGOAsajLy3si+mHCJpYQPArQ7zKIRqo4RYr0c4nltVk8mH06TwEAXhOjW eXm+JK4puiH3ILlNLnEasUVsavkn5SBG/M+mnOoCOwbyYnDk0S06d1vCp7AaqOvbhzB6uSn5mwG KPEWa4pXhmad4j0azNgVYHrcAyX578gpQIF6S3H1sdF6E3c7CVCRtYzZmZI5N1ltwpDdJc/Ekvj 6vrHCstdSIlYc= X-Google-Smtp-Source: AGHT+IFeyI0Qmv/W+8x9HEVce2BJ1U7rPbvYiu9qefbETDwwR8GfWjNVDPJZ55xAV6KEJZjaAcCOAw== X-Received: by 2002:a05:690e:1c0b:b0:63f:af0f:aaf with SMTP id 956f58d0204a3-63fd31161f5mr1195839d50.1.1762305804005; Tue, 04 Nov 2025 17:23:24 -0800 (PST) Received: from localhost ([2a03:2880:25ff:41::]) by smtp.gmail.com with ESMTPSA id 956f58d0204a3-63fc92f0a66sm1316651d50.0.2025.11.04.17.23.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Nov 2025 17:23:23 -0800 (PST) From: Bobby Eshleman Date: Tue, 04 Nov 2025 17:23:20 -0800 Subject: [PATCH net-next v6 1/6] net: devmem: rename tx_vec to vec in dmabuf binding Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251104-scratch-bobbyeshleman-devmem-tcp-token-upstream-v6-1-ea98cf4d40b3@meta.com> References: <20251104-scratch-bobbyeshleman-devmem-tcp-token-upstream-v6-0-ea98cf4d40b3@meta.com> In-Reply-To: <20251104-scratch-bobbyeshleman-devmem-tcp-token-upstream-v6-0-ea98cf4d40b3@meta.com> To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Kuniyuki Iwashima , Willem de Bruijn , Neal Cardwell , David Ahern , Arnd Bergmann , Jonathan Corbet , Andrew Lunn , Shuah Khan , Mina Almasry Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, Stanislav Fomichev , Bobby Eshleman X-Mailer: b4 0.14.3 From: Bobby Eshleman Rename the 'tx_vec' field in struct net_devmem_dmabuf_binding to 'vec'. This field holds pointers to net_iov structures. The rename prepares for reusing 'vec' for both TX and RX directions. No functional change intended. Reviewed-by: Mina Almasry Signed-off-by: Bobby Eshleman --- net/core/devmem.c | 22 +++++++++++----------- net/core/devmem.h | 2 +- 2 files changed, 12 insertions(+), 12 deletions(-) diff --git a/net/core/devmem.c b/net/core/devmem.c index 1d04754bc756..4dee2666dd07 100644 --- a/net/core/devmem.c +++ b/net/core/devmem.c @@ -75,7 +75,7 @@ void __net_devmem_dmabuf_binding_free(struct work_struct = *wq) dma_buf_detach(binding->dmabuf, binding->attachment); dma_buf_put(binding->dmabuf); xa_destroy(&binding->bound_rxqs); - kvfree(binding->tx_vec); + kvfree(binding->vec); kfree(binding); } =20 @@ -232,10 +232,10 @@ net_devmem_bind_dmabuf(struct net_device *dev, } =20 if (direction =3D=3D DMA_TO_DEVICE) { - binding->tx_vec =3D kvmalloc_array(dmabuf->size / PAGE_SIZE, - sizeof(struct net_iov *), - GFP_KERNEL); - if (!binding->tx_vec) { + binding->vec =3D kvmalloc_array(dmabuf->size / PAGE_SIZE, + sizeof(struct net_iov *), + GFP_KERNEL); + if (!binding->vec) { err =3D -ENOMEM; goto err_unmap; } @@ -249,7 +249,7 @@ net_devmem_bind_dmabuf(struct net_device *dev, dev_to_node(&dev->dev)); if (!binding->chunk_pool) { err =3D -ENOMEM; - goto err_tx_vec; + goto err_vec; } =20 virtual =3D 0; @@ -295,7 +295,7 @@ net_devmem_bind_dmabuf(struct net_device *dev, page_pool_set_dma_addr_netmem(net_iov_to_netmem(niov), net_devmem_get_dma_addr(niov)); if (direction =3D=3D DMA_TO_DEVICE) - binding->tx_vec[owner->area.base_virtual / PAGE_SIZE + i] =3D niov; + binding->vec[owner->area.base_virtual / PAGE_SIZE + i] =3D niov; } =20 virtual +=3D len; @@ -315,8 +315,8 @@ net_devmem_bind_dmabuf(struct net_device *dev, gen_pool_for_each_chunk(binding->chunk_pool, net_devmem_dmabuf_free_chunk_owner, NULL); gen_pool_destroy(binding->chunk_pool); -err_tx_vec: - kvfree(binding->tx_vec); +err_vec: + kvfree(binding->vec); err_unmap: dma_buf_unmap_attachment_unlocked(binding->attachment, binding->sgt, direction); @@ -363,7 +363,7 @@ struct net_devmem_dmabuf_binding *net_devmem_get_bindin= g(struct sock *sk, int err =3D 0; =20 binding =3D net_devmem_lookup_dmabuf(dmabuf_id); - if (!binding || !binding->tx_vec) { + if (!binding || !binding->vec) { err =3D -EINVAL; goto out_err; } @@ -414,7 +414,7 @@ net_devmem_get_niov_at(struct net_devmem_dmabuf_binding= *binding, *off =3D virt_addr % PAGE_SIZE; *size =3D PAGE_SIZE - *off; =20 - return binding->tx_vec[virt_addr / PAGE_SIZE]; + return binding->vec[virt_addr / PAGE_SIZE]; } =20 /*** "Dmabuf devmem memory provider" ***/ diff --git a/net/core/devmem.h b/net/core/devmem.h index 101150d761af..2ada54fb63d7 100644 --- a/net/core/devmem.h +++ b/net/core/devmem.h @@ -63,7 +63,7 @@ struct net_devmem_dmabuf_binding { * address. This array is convenient to map the virtual addresses to * net_iovs in the TX path. */ - struct net_iov **tx_vec; + struct net_iov **vec; =20 struct work_struct unbind_w; }; --=20 2.47.3