From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52308) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eZd46-0007Y2-Hs for qemu-devel@nongnu.org; Thu, 11 Jan 2018 08:38:43 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eZd40-00006p-Of for qemu-devel@nongnu.org; Thu, 11 Jan 2018 08:38:42 -0500 Received: from orth.archaic.org.uk ([2001:8b0:1d0::2]:45848) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eZd40-00005e-F3 for qemu-devel@nongnu.org; Thu, 11 Jan 2018 08:38:36 -0500 Received: from pm215 by orth.archaic.org.uk with local (Exim 4.89) (envelope-from ) id 1eZd3z-0005gn-Dj for qemu-devel@nongnu.org; Thu, 11 Jan 2018 13:38:35 +0000 From: Peter Maydell Date: Thu, 11 Jan 2018 13:38:10 +0000 Message-Id: <1515677902-23436-15-git-send-email-peter.maydell@linaro.org> In-Reply-To: <1515677902-23436-1-git-send-email-peter.maydell@linaro.org> References: <1515677902-23436-1-git-send-email-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PULL 14/26] imx_fec: Use ENET_FTRL to determine truncation length List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org From: Andrey Smirnov Frame truncation length, TRUNC_FL, is determined by the contents of ENET_FTRL register, so convert the code to use it instead of a hardcoded constant. To avoid the case where TRUNC_FL is greater that ENET_MAX_FRAME_SIZE, increase the value of the latter to its theoretical maximum of 16K. Cc: Peter Maydell Cc: Jason Wang Cc: Philippe Mathieu-Daudé Cc: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Cc: yurovsky@gmail.com Signed-off-by: Andrey Smirnov Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- include/hw/net/imx_fec.h | 3 ++- hw/net/imx_fec.c | 4 ++-- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/include/hw/net/imx_fec.h b/include/hw/net/imx_fec.h index 6799387..a390d70 100644 --- a/include/hw/net/imx_fec.h +++ b/include/hw/net/imx_fec.h @@ -86,7 +86,6 @@ #define ENET_TCCR3 393 #define ENET_MAX 400 -#define ENET_MAX_FRAME_SIZE 2032 /* EIR and EIMR */ #define ENET_INT_HB (1 << 31) @@ -155,6 +154,8 @@ #define ENET_RCR_NLC (1 << 30) #define ENET_RCR_GRS (1 << 31) +#define ENET_MAX_FRAME_SIZE (1 << ENET_RCR_MAX_FL_LENGTH) + /* TCR */ #define ENET_TCR_GTS (1 << 0) #define ENET_TCR_FDEN (1 << 2) diff --git a/hw/net/imx_fec.c b/hw/net/imx_fec.c index 56cb722..50da91b 100644 --- a/hw/net/imx_fec.c +++ b/hw/net/imx_fec.c @@ -1052,8 +1052,8 @@ static ssize_t imx_enet_receive(NetClientState *nc, const uint8_t *buf, crc_ptr = (uint8_t *) &crc; /* Huge frames are truncted. */ - if (size > ENET_MAX_FRAME_SIZE) { - size = ENET_MAX_FRAME_SIZE; + if (size > s->regs[ENET_FTRL]) { + size = s->regs[ENET_FTRL]; flags |= ENET_BD_TR | ENET_BD_LG; } -- 2.7.4