From nobody Fri Dec 19 18:28:20 2025 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) (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 8657B1991D9; Thu, 5 Sep 2024 08:07:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=68.232.153.233 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725523672; cv=none; b=lGMpekIXCBK33vcCn34BpCrIPyel5q+qdk1bQWcTTYq7wHIDxbVAb6fDTlIxf97+eah6nDcvjB0fbc32J5J7E2CQVsqkSdgMlPeVQYiwnMbFstFIx6pGJwTH9dsg+eJB1Sul81dxXs7ADf9k1dRr0DEGaPgdzLTrgeCy9SZ+7Rg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725523672; c=relaxed/simple; bh=M2TwK1cJ9yncTsoISBdNRRNCZrwjb2y9dw1H8CTcJxs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=HJxcdp58tjb3FdH4K3UaOfbSXv+Otj6h8YKZk8yY22I8uclIpj1zKG5hsQZxBLf/qZbkpOpcl75QNfOjfibuqsn3DifkBbZ1RwSZ3ZR6/4wzUsvRjYwGleXW5e6dUfxEezb4e0zTKxOLtaGJw+RUkwOr98pEl0VEoB6WrKDWrxc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com; spf=pass smtp.mailfrom=microchip.com; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b=EA40rSQF; arc=none smtp.client-ip=68.232.153.233 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=microchip.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="EA40rSQF" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1725523670; x=1757059670; h=from:date:subject:mime-version:content-transfer-encoding: message-id:references:in-reply-to:to:cc; bh=M2TwK1cJ9yncTsoISBdNRRNCZrwjb2y9dw1H8CTcJxs=; b=EA40rSQFKHDgtBpgnVgFQVvalUVNaLGmSPy95uGRIMonjlXfaey6MxKR uu97D44xOkSaohWKhwucEztDFxo5ChW9PCHcpE7H75qR5np2Ilw00rS2l a2NrXbWX8BIqz8J+IH+VnvavfgR67NHMZyUv1QIqiYwPjU1Q2BjY7kL8l pYDzymn6v0LkRjMSV3Fp7AZtfZjb2ddzIS1PbB0c51efalqnGygpObkPG qdsmCuvUnNovL627y+Q/kPgIgo3YT2B70Oz4lRn2MbGc2t16GvFMrhn9T rVIeoas7XVkCqkOPYfn0SD6XICDL3869TgOzyaHIw6w+YplkqFb28VSMF g==; X-CSE-ConnectionGUID: 7ewQ9CGBRIuJm60AkmofCw== X-CSE-MsgGUID: DhKSG2F5SmW+R/YLwklhMw== X-IronPort-AV: E=Sophos;i="6.10,204,1719903600"; d="scan'208";a="34454188" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa1.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 05 Sep 2024 01:07:48 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.85.144) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Thu, 5 Sep 2024 01:07:19 -0700 Received: from [10.205.21.108] (10.10.85.11) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.2507.35 via Frontend Transport; Thu, 5 Sep 2024 01:07:17 -0700 From: Daniel Machon Date: Thu, 5 Sep 2024 10:06:39 +0200 Subject: [PATCH net-next 11/12] net: lan966x: use a few FDMA helpers throughout 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: <20240905-fdma-lan966x-v1-11-e083f8620165@microchip.com> References: <20240905-fdma-lan966x-v1-0-e083f8620165@microchip.com> In-Reply-To: <20240905-fdma-lan966x-v1-0-e083f8620165@microchip.com> To: Horatiu Vultur , , "David S. Miller" , "Eric Dumazet" , Jakub Kicinski , Paolo Abeni , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , "John Fastabend" CC: , , X-Mailer: b4 0.14-dev The library provides helpers for a number of DCB and DB operations. Use these throughout the code and remove the old ones. Signed-off-by: Daniel Machon Reviewed-by: Horatiu Vultur --- .../net/ethernet/microchip/lan966x/lan966x_fdma.c | 42 ++++++------------= ---- 1 file changed, 11 insertions(+), 31 deletions(-) diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c b/driver= s/net/ethernet/microchip/lan966x/lan966x_fdma.c index b5a97c5a2e1b..4c8f83e4c5de 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c @@ -126,14 +126,6 @@ static int lan966x_fdma_rx_alloc(struct lan966x_rx *rx) return 0; } =20 -static void lan966x_fdma_rx_advance_dcb(struct lan966x_rx *rx) -{ - struct fdma *fdma =3D &rx->fdma; - - fdma->dcb_index++; - fdma->dcb_index &=3D fdma->n_dcbs - 1; -} - static void lan966x_fdma_rx_start(struct lan966x_rx *rx) { struct lan966x *lan966x =3D rx->lan966x; @@ -355,8 +347,8 @@ static void lan966x_fdma_tx_clear_buf(struct lan966x *l= an966x, int weight) if (!dcb_buf->used) continue; =20 - db =3D &fdma->dcbs[i].db[0]; - if (!(db->status & FDMA_DCB_STATUS_DONE)) + db =3D fdma_db_get(fdma, i, 0); + if (!fdma_db_is_done(db)) continue; =20 dcb_buf->dev->stats.tx_packets++; @@ -396,19 +388,6 @@ static void lan966x_fdma_tx_clear_buf(struct lan966x *= lan966x, int weight) spin_unlock_irqrestore(&lan966x->tx_lock, flags); } =20 -static bool lan966x_fdma_rx_more_frames(struct lan966x_rx *rx) -{ - struct fdma *fdma =3D &rx->fdma; - struct fdma_db *db; - - /* Check if there is any data */ - db =3D &fdma->dcbs[fdma->dcb_index].db[fdma->db_index]; - if (unlikely(!(db->status & FDMA_DCB_STATUS_DONE))) - return false; - - return true; -} - static int lan966x_fdma_rx_check_frame(struct lan966x_rx *rx, u64 *src_por= t) { struct lan966x *lan966x =3D rx->lan966x; @@ -417,7 +396,7 @@ static int lan966x_fdma_rx_check_frame(struct lan966x_r= x *rx, u64 *src_port) struct fdma_db *db; struct page *page; =20 - db =3D &fdma->dcbs[fdma->dcb_index].db[fdma->db_index]; + db =3D fdma_db_next_get(fdma); page =3D rx->page[fdma->dcb_index][fdma->db_index]; if (unlikely(!page)) return FDMA_ERROR; @@ -450,7 +429,7 @@ static struct sk_buff *lan966x_fdma_rx_get_frame(struct= lan966x_rx *rx, u64 timestamp; =20 /* Get the received frame and unmap it */ - db =3D &fdma->dcbs[fdma->dcb_index].db[fdma->db_index]; + db =3D fdma_db_next_get(fdma); page =3D rx->page[fdma->dcb_index][fdma->db_index]; =20 skb =3D build_skb(page_address(page), fdma->db_size); @@ -508,7 +487,7 @@ static int lan966x_fdma_napi_poll(struct napi_struct *n= api, int weight) =20 /* Get all received skb */ while (counter < weight) { - if (!lan966x_fdma_rx_more_frames(rx)) + if (!fdma_has_frames(fdma)) break; =20 counter++; @@ -518,22 +497,22 @@ static int lan966x_fdma_napi_poll(struct napi_struct = *napi, int weight) break; case FDMA_ERROR: lan966x_fdma_rx_free_page(rx); - lan966x_fdma_rx_advance_dcb(rx); + fdma_dcb_advance(fdma); goto allocate_new; case FDMA_REDIRECT: redirect =3D true; fallthrough; case FDMA_TX: - lan966x_fdma_rx_advance_dcb(rx); + fdma_dcb_advance(fdma); continue; case FDMA_DROP: lan966x_fdma_rx_free_page(rx); - lan966x_fdma_rx_advance_dcb(rx); + fdma_dcb_advance(fdma); continue; } =20 skb =3D lan966x_fdma_rx_get_frame(rx, src_port); - lan966x_fdma_rx_advance_dcb(rx); + fdma_dcb_advance(fdma); if (!skb) goto allocate_new; =20 @@ -597,7 +576,8 @@ static int lan966x_fdma_get_next_dcb(struct lan966x_tx = *tx) =20 for (i =3D 0; i < fdma->n_dcbs; ++i) { dcb_buf =3D &tx->dcbs_buf[i]; - if (!dcb_buf->used && &fdma->dcbs[i] !=3D fdma->last_dcb) + if (!dcb_buf->used && + !fdma_is_last(&tx->fdma, &tx->fdma.dcbs[i])) return i; } =20 --=20 2.34.1