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Tue, 19 Mar 2019 05:17:19 +0000 From: Joakim Zhang To: "mkl@pengutronix.de" , "linux-can@vger.kernel.org" CC: dl-linux-imx , "wg@grandegger.com" , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Aisheng Dong , Joakim Zhang Subject: [PATCH V2 1/5] can: rx-offload: add CANFD support based on offload Thread-Topic: [PATCH V2 1/5] can: rx-offload: add CANFD support based on offload Thread-Index: AQHU3hMG1dYp7d8ci0uBfqz2FO4VKQ== Date: Tue, 19 Mar 2019 05:17:19 +0000 Message-ID: <20190319051512.14950-2-qiangqing.zhang@nxp.com> References: <20190319051512.14950-1-qiangqing.zhang@nxp.com> In-Reply-To: <20190319051512.14950-1-qiangqing.zhang@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.17.1 x-clientproxiedby: SG2PR04CA0137.apcprd04.prod.outlook.com (2603:1096:3:16::21) To DB7PR04MB4618.eurprd04.prod.outlook.com (2603:10a6:5:36::24) authentication-results: spf=none (sender IP is ) smtp.mailfrom=qiangqing.zhang@nxp.com; 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DIR:OUT; SFP:1101; SCL:1; SRVR:DB7PR04MB4796; H:DB7PR04MB4618.eurprd04.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: atniqBO+NQKQyCr0szmeRZ++mMQES5ZJJHdATqsm1gAVrdAglV0Ea5Gwno81kjGpWjKBKZe7ftOt9qVxlDSHJp7H/UqRNnjYC7TJ+3rqg0hhMBc6X2ZUTSBqEJAJpCZW7Oz2mzKgm+aTpnjAxaeDbfBxuDCWNQwInyT/+hCz3kMWlGX6oBb7JUwp7A1N8iMVOdAXqVS4ZMubc01SeoY+ZamfONo4qr+ROCH9oT6TMnQMx+PxHdRlr5oc5h24bm+Y+9VO2Cvdc78uvGMXzgRUOFOFAvfD46sv7XhDWshrDyYN7udWA1jBRhZj6AEZGyFMi5iFVVAYNXih+1xTvVAxRz3fD7aHv/9RZjJco4hNCfPj8VuOX/Q4k+EjJnlw/hWC0/3sqiOwfzk3kPqPItQx/Yix91b6AP2YSv8nbiMRUIk= MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: bf88c2f6-ca11-4f4c-0565-08d6ac2a2899 X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Mar 2019 05:17:19.1876 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR04MB4796 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Dong Aisheng Using struct canfd_frame instead of can_frame to add support for CAN FD mode in offload. FlexCAN controller will set the is_canfd variable when it sets CAN FD mode. Signed-off-by: Dong Aisheng Signed-off-by: Joakim Zhang ChangeLog: ---------- V1->V2: *None --- drivers/net/can/rx-offload.c | 16 ++++++++++------ include/linux/can/rx-offload.h | 4 +++- 2 files changed, 13 insertions(+), 7 deletions(-) diff --git a/drivers/net/can/rx-offload.c b/drivers/net/can/rx-offload.c index 2ce4fa8698c7..131fe600deb3 100644 --- a/drivers/net/can/rx-offload.c +++ b/drivers/net/can/rx-offload.c @@ -55,11 +55,11 @@ static int can_rx_offload_napi_poll(struct napi_struct *napi, int quota) while ((work_done < quota) && (skb = skb_dequeue(&offload->skb_queue))) { - struct can_frame *cf = (struct can_frame *)skb->data; + struct canfd_frame *cf = (struct canfd_frame *)skb->data; work_done++; stats->rx_packets++; - stats->rx_bytes += cf->can_dlc; + stats->rx_bytes += cf->len; netif_receive_skb(skb); } @@ -122,16 +122,20 @@ static struct sk_buff *can_rx_offload_offload_one(struct can_rx_offload *offload { struct sk_buff *skb = NULL; struct can_rx_offload_cb *cb; - struct can_frame *cf; + struct canfd_frame *cf; int ret; /* If queue is full or skb not available, read to discard mailbox */ if (likely(skb_queue_len(&offload->skb_queue) <= - offload->skb_queue_len_max)) - skb = alloc_can_skb(offload->dev, &cf); + offload->skb_queue_len_max)) { + if (offload->is_canfd) + skb = alloc_canfd_skb(offload->dev, &cf); + else + skb = alloc_can_skb(offload->dev, (struct can_frame **)&cf); + } if (!skb) { - struct can_frame cf_overflow; + struct canfd_frame cf_overflow; u32 timestamp; ret = offload->mailbox_read(offload, &cf_overflow, diff --git a/include/linux/can/rx-offload.h b/include/linux/can/rx-offload.h index 8268811a697e..6448e7dfc170 100644 --- a/include/linux/can/rx-offload.h +++ b/include/linux/can/rx-offload.h @@ -23,7 +23,7 @@ struct can_rx_offload { struct net_device *dev; - unsigned int (*mailbox_read)(struct can_rx_offload *offload, struct can_frame *cf, + unsigned int (*mailbox_read)(struct can_rx_offload *offload, struct canfd_frame *cf, u32 *timestamp, unsigned int mb); struct sk_buff_head skb_queue; @@ -35,6 +35,8 @@ struct can_rx_offload { struct napi_struct napi; bool inc; + + bool is_canfd; }; int can_rx_offload_add_timestamp(struct net_device *dev, struct can_rx_offload *offload);