From nobody Wed Oct 1 23:27:53 2025 Received: from mail-yw1-f182.google.com (mail-yw1-f182.google.com [209.85.128.182]) (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 E2A672FCC1E for ; Fri, 26 Sep 2025 16:31:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758904300; cv=none; b=YUKs+YCDagtzX1+F3R/zHvc9OmTd2ZcQNIb7Nhuv0p+tdvz59kW56j+u0RMZ9dbMYRl0+vkcZg0qzDiaYtf3tqoKKj0apHy5NvKUxTMdjxryzgwthOVnociQwe797OEApbm2vERQYqruE06LCHNwnI8EsR1AGgxaJa1L0WeaxwM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758904300; c=relaxed/simple; bh=fdrJ2W7mBo4ScK0+ExdwCjhXZ7mjfmL0Ggt7KK74nGg=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Ai+Tl9XRaQtWEDvjs3+Du+b5gjdBHCQjRACflNXJoH2paINeCslLtRjN1hz5Hb2soYOcZ7T+XycBjYYZlT8ROZAVo8+wIDa6SvUtnkPw4gpJDmlvoalPCjM3wGtaztsH3gW4OsZ8Q5HeAVpgceWK2+uRc7rkAdLpTzTCKq+42i0= 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=dKr5izzV; arc=none smtp.client-ip=209.85.128.182 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="dKr5izzV" Received: by mail-yw1-f182.google.com with SMTP id 00721157ae682-7501c24a731so23462547b3.3 for ; Fri, 26 Sep 2025 09:31:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1758904298; x=1759509098; 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=gJXxA4eRg+MQwHOWJI8nle9db3f24EujzoUrSFcpQz8=; b=dKr5izzVkHdIqYFrdHrWNN9CKKrO9An8m9qa2FpWpFiaNsLfcAS5P5uauLgFeUHai8 N5ETzZkCCV7AHq+nwIeDPPTyXv0JMKnCLEWMZxyg1QDqW56/LLoQkz5kBlBm8K5TfyPH TBvQsD/hw3MI4vW6L2jQJWaEb/0RsiiQ/PAH09ufx1PwvF+xMBPGL7oyY5pUqZb1emfI pBZonB+rnsXbdDNqpturXxHG+2UqsV3mntQT9dESTkT3+AZt5xtGZco87sih20m4I8hF /ALKAOzfuDmvu0npXhy/Of48Q/k54aX7b4oHHgSs7c7w45E4gkU5xC+b86xglPgL8OYm 3isQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1758904298; x=1759509098; 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=gJXxA4eRg+MQwHOWJI8nle9db3f24EujzoUrSFcpQz8=; b=AL2VWTBHbCPZC52NKkD1oFmIDhyye/tuM68p4yG/hn7Bal50jR4whNdQdw08CQPCNf 9yIqvs3GS+k5Vd+5Dy642IVInWHqO98wVbiXm/AxZU8Ae1ts78300gDn0CYRZ7Afi89P giDDrHS14TqRHsRCJAOttcJokQdHa3ZIv3+p+SlTD6OA/hBVr+hxbSp2zy+eZsMDmDj/ Sz4EDJAwQ+Iqq2/id6/58weGwPRUhnPcbbCJXwOn2xuJPeVSL2KgrIiKEiJmoT7qS4YX 5qD0iBTb+t1vPp1glum0aWL2SP2xsp2FKU5GFz0LsPDXkqv5Pk0C2MVHfUUPgmHferVV Swvw== X-Forwarded-Encrypted: i=1; AJvYcCWR6EkoPziNkvcNqusO0i1aPHGKvsT0N4yJDqTTrkmrUL7+etyWviwT6WatEmqk0JL0tPKCVakj9bsiavM=@vger.kernel.org X-Gm-Message-State: AOJu0Yy6pad1ZxtYZT5bfj88vG4keOrMXhi7w5xmXubFW11lA3LDVYdu d65vgoELq3P6c0bkOBarUZ+BDFa3WGXvbDVixT2+WGwu1IzqkaZ/ATZC X-Gm-Gg: ASbGncsn2pIZUhV8vmlfEuBxMAf/Z0jFsBbO17lSSqQUw0y0pJCruCDc1+udobUG/Hs EdldszyK1vR4Wu5a6GEHSspqZEmjIrrbBpB/1A5H8AysC4zzud6l6B0dvu8DkKI1ss0eJ710WOX 0GTsnm7iO0D7wp2x+cI4RZ8cf6tRwbhWC3WJd+9r8zOOQnRIMXugH3gAah92m3xoItjtq2ONex3 9xAB9IVayZ/w6WWeLu4SDvd3iQZomFgxIFoUPmuS53sT4LXsa3I1cIHrCLh9L3HyGe20ldfk1HP bUqoF7lWI7UUndM0866kgk6tulBuTAfEkdQMW8gktvRPJpnwHikLgMc7/ySEI7NfBvD5Nxkrdgu Hz4fMJBkcIy5k5rCWfx1DFiJvcDfVIEqG X-Google-Smtp-Source: AGHT+IGgf0LInGO2FgPKF/qZPEg+wvtbY55Rmkh2td5aYcvJhlHNnAbaa8nq5hAyjPwUopZSPdvbKw== X-Received: by 2002:a05:690e:1607:b0:635:4ed0:5730 with SMTP id 956f58d0204a3-6361a862bf9mr6602221d50.52.1758904297608; Fri, 26 Sep 2025 09:31:37 -0700 (PDT) Received: from localhost ([2a03:2880:25ff:5f::]) by smtp.gmail.com with ESMTPSA id 3f1490d57ef6-eb38384d7b9sm1483770276.6.2025.09.26.09.31.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 Sep 2025 09:31:37 -0700 (PDT) From: Bobby Eshleman Date: Fri, 26 Sep 2025 09:31:33 -0700 Subject: [PATCH net-next v4 1/2] 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: <20250926-scratch-bobbyeshleman-devmem-tcp-token-upstream-v4-1-39156563c3ea@meta.com> References: <20250926-scratch-bobbyeshleman-devmem-tcp-token-upstream-v4-0-39156563c3ea@meta.com> In-Reply-To: <20250926-scratch-bobbyeshleman-devmem-tcp-token-upstream-v4-0-39156563c3ea@meta.com> To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Kuniyuki Iwashima , Willem de Bruijn , Neal Cardwell , David Ahern Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Stanislav Fomichev , Mina Almasry , Bobby Eshleman X-Mailer: b4 0.13.0 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. 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 d9de31a6cc7f..b4c570d4f37a 100644 --- a/net/core/devmem.c +++ b/net/core/devmem.c @@ -74,7 +74,7 @@ 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 @@ -231,10 +231,10 @@ 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; } @@ -248,7 +248,7 @@ 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; @@ -294,7 +294,7 @@ 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; @@ -314,8 +314,8 @@ 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); @@ -361,7 +361,7 @@ 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; } @@ -393,7 +393,7 @@ 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