From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 703FC1A5BB7; Wed, 5 Mar 2025 18:11:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741198294; cv=none; b=TMDlq4A//ra0shPpYpIL1SORZdDZC+tSbmUI5HqyKBJnzGI+QRG3Y9gD/SJGkf8+Talx4VgbkhgMJ6sZzaa2WsQuItgKNfs97YzWSq32Sl0UfEnS6v2cm6b9f8cDtjCY6WcwkAnP5n27psaii3zxQYL8Cz2D54uuY2NxB4/cdlM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741198294; c=relaxed/simple; bh=vjOm8fDztvnscnSV8lkYRxK98OctyQ/eCoJkcV0g+cE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Y4DoZx5dO1OusmFyHQA5NZspqkbc1yyj/q7PnnNSJxOzrurpoVo5OpyUqrvCzfR+jUBCsqIQGUbg3hM8Vk0Qyg0HqnfvrUcRsaWsGgrIlFihURmlUvGBrvPrLVu7GzLHh1/swxp1ditPpzBq9RLAQJmRgJrLp96brmp60i3JmIw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=jALC718x; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="jALC718x" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EB073C4CED1; Wed, 5 Mar 2025 18:11:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1741198294; bh=vjOm8fDztvnscnSV8lkYRxK98OctyQ/eCoJkcV0g+cE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jALC718x++/BhBY7x6ESDHgPHjHDi5qnRGR1PoRUBqQdXmJI+srRQK5G6sMnwOLYI Pg5i6VdPS58cLBKvp/MysnKYigw5BmjEmA0yoYep/d9Jr0CjNt1GHwc1geDdHiR4zR wnJYIl7lnObqGT8l3QiXNWVfOORAD/2m4jSmBwps= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Vladimir Oltean , Wei Fang , Claudiu Manoil , Jakub Kicinski Subject: [PATCH 6.12 112/150] net: enetc: keep track of correct Tx BD count in enetc_map_tx_tso_buffs() Date: Wed, 5 Mar 2025 18:49:01 +0100 Message-ID: <20250305174508.315430998@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250305174503.801402104@linuxfoundation.org> References: <20250305174503.801402104@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Wei Fang commit da291996b16ebd10626d4b20288327b743aff110 upstream. When creating a TSO header, if the skb is VLAN tagged, the extended BD will be used and the 'count' should be increased by 2 instead of 1. Otherwise, when an error occurs, less tx_swbd will be freed than the actual number. Fixes: fb8629e2cbfc ("net: enetc: add support for software TSO") Cc: stable@vger.kernel.org Suggested-by: Vladimir Oltean Signed-off-by: Wei Fang Reviewed-by: Vladimir Oltean Reviewed-by: Claudiu Manoil Link: https://patch.msgid.link/20250224111251.1061098-3-wei.fang@nxp.com Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/freescale/enetc/enetc.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) --- a/drivers/net/ethernet/freescale/enetc/enetc.c +++ b/drivers/net/ethernet/freescale/enetc/enetc.c @@ -351,14 +351,15 @@ dma_err: return 0; } -static void enetc_map_tx_tso_hdr(struct enetc_bdr *tx_ring, struct sk_buff *skb, - struct enetc_tx_swbd *tx_swbd, - union enetc_tx_bd *txbd, int *i, int hdr_len, - int data_len) +static int enetc_map_tx_tso_hdr(struct enetc_bdr *tx_ring, struct sk_buff *skb, + struct enetc_tx_swbd *tx_swbd, + union enetc_tx_bd *txbd, int *i, int hdr_len, + int data_len) { union enetc_tx_bd txbd_tmp; u8 flags = 0, e_flags = 0; dma_addr_t addr; + int count = 1; enetc_clear_tx_bd(&txbd_tmp); addr = tx_ring->tso_headers_dma + *i * TSO_HEADER_SIZE; @@ -401,7 +402,10 @@ static void enetc_map_tx_tso_hdr(struct /* Write the BD */ txbd_tmp.ext.e_flags = e_flags; *txbd = txbd_tmp; + count++; } + + return count; } static int enetc_map_tx_tso_data(struct enetc_bdr *tx_ring, struct sk_buff *skb, @@ -533,9 +537,9 @@ static int enetc_map_tx_tso_buffs(struct /* compute the csum over the L4 header */ csum = enetc_tso_hdr_csum(&tso, skb, hdr, hdr_len, &pos); - enetc_map_tx_tso_hdr(tx_ring, skb, tx_swbd, txbd, &i, hdr_len, data_len); + count += enetc_map_tx_tso_hdr(tx_ring, skb, tx_swbd, txbd, + &i, hdr_len, data_len); bd_data_num = 0; - count++; while (data_len > 0) { int size;