can: rename get_can_dlc() macro with can_cc_dlc2len()

The get_can_dlc() macro is used to ensure the payload length information of
the Classical CAN frame to be max 8 bytes (the CAN_MAX_DLEN).

Rename the macro and use the correct constant in preparation of the len/dlc
cleanup for Classical CAN frames.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://lore.kernel.org/r/20201110101852.1973-3-socketcan@hartkopp.net
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c
index c14de95..db06254 100644 (file)
--- a/drivers/net/can/at91_can.c
+++ b/drivers/net/can/at91_can.c
@@ -580,7 +580,7 @@ static void at91_read_mb(struct net_device *dev, unsigned int mb,
                cf->can_id = (reg_mid >> 18) & CAN_SFF_MASK;
 
        reg_msr = at91_read(priv, AT91_MSR(mb));
-       cf->can_dlc = get_can_dlc((reg_msr >> 16) & 0xf);
+       cf->can_dlc = can_cc_dlc2len((reg_msr >> 16) & 0xf);
 
        if (reg_msr & AT91_MSR_MRTR)
                cf->can_id |= CAN_RTR_FLAG;

diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c
index 1ccdbe8..56cc705 100644 (file)
--- a/drivers/net/can/c_can/c_can.c
+++ b/drivers/net/can/c_can/c_can.c
@@ -397,7 +397,7 @@ static int c_can_read_msg_object(struct net_device *dev, int iface, u32 ctrl)
                return -ENOMEM;
        }
 
-       frame->can_dlc = get_can_dlc(ctrl & 0x0F);
+       frame->can_dlc = can_cc_dlc2len(ctrl & 0x0F);
 
        arb = priv->read_reg32(priv, C_CAN_IFACE(ARB1_REG, iface));
 

diff --git a/drivers/net/can/cc770/cc770.c b/drivers/net/can/cc770/cc770.c
index 07e2b8d..3fd2a27 100644 (file)
--- a/drivers/net/can/cc770/cc770.c
+++ b/drivers/net/can/cc770/cc770.c
@@ -486,7 +486,7 @@ static void cc770_rx(struct net_device *dev, unsigned int mo, u8 ctrl1)
                }
 
                cf->can_id = id;
-               cf->can_dlc = get_can_dlc((config & 0xf0) >> 4);
+               cf->can_dlc = can_cc_dlc2len((config & 0xf0) >> 4);
                for (i = 0; i < cf->can_dlc; i++)
                        cf->data[i] = cc770_read_reg(priv, msgobj[mo].data[i]);
        }

diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
index 99e5f27..50ccd18 100644 (file)
--- a/drivers/net/can/flexcan.c
+++ b/drivers/net/can/flexcan.c
@@ -1005,7 +1005,7 @@ static struct sk_buff *flexcan_mailbox_read(struct can_rx_offload *offload,
                if (reg_ctrl & FLEXCAN_MB_CNT_BRS)
                        cfd->flags |= CANFD_BRS;
        } else {
-               cfd->len = get_can_dlc((reg_ctrl >> 16) & 0xf);
+               cfd->len = can_cc_dlc2len((reg_ctrl >> 16) & 0xf);
 
                if (reg_ctrl & FLEXCAN_MB_CNT_RTR)
                        cfd->can_id |= CAN_RTR_FLAG;

diff --git a/drivers/net/can/grcan.c b/drivers/net/can/grcan.c
index 39802f1..c71c9b8 100644 (file)
--- a/drivers/net/can/grcan.c
+++ b/drivers/net/can/grcan.c
@@ -1201,7 +1201,7 @@ static int grcan_receive(struct net_device *dev, int budget)
                        cf->can_id = ((slot[0] & GRCAN_MSG_BID)
                                      >> GRCAN_MSG_BID_BIT);
                }
-               cf->can_dlc = get_can_dlc((slot[1] & GRCAN_MSG_DLC)
+               cf->can_dlc = can_cc_dlc2len((slot[1] & GRCAN_MSG_DLC)
                                          >> GRCAN_MSG_DLC_BIT);
                if (rtr) {
                        cf->can_id |= CAN_RTR_FLAG;

diff --git a/drivers/net/can/ifi_canfd/ifi_canfd.c b/drivers/net/can/ifi_canfd/ifi_canfd.c
index 74503ca..cc79035 100644 (file)
--- a/drivers/net/can/ifi_canfd/ifi_canfd.c
+++ b/drivers/net/can/ifi_canfd/ifi_canfd.c
@@ -273,7 +273,7 @@ static void ifi_canfd_read_fifo(struct net_device *ndev)
        if (rxdlc & IFI_CANFD_RXFIFO_DLC_EDL)
                cf->len = can_dlc2len(dlc);
        else
-               cf->len = get_can_dlc(dlc);
+               cf->len = can_cc_dlc2len(dlc);
 
        rxid = readl(priv->base + IFI_CANFD_RXFIFO_ID);
        id = (rxid >> IFI_CANFD_RXFIFO_ID_ID_OFFSET);

diff --git a/drivers/net/can/janz-ican3.c b/drivers/net/can/janz-ican3.c
index f929db8..6a21af0 100644 (file)
--- a/drivers/net/can/janz-ican3.c
+++ b/drivers/net/can/janz-ican3.c
@@ -916,10 +916,10 @@ static void ican3_to_can_frame(struct ican3_dev *mod,
 
                cf->can_id |= desc->data[0] << 3;
                cf->can_id |= (desc->data[1] & 0xe0) >> 5;
-               cf->can_dlc = get_can_dlc(desc->data[1] & ICAN3_CAN_DLC_MASK);
+               cf->can_dlc = can_cc_dlc2len(desc->data[1] & ICAN3_CAN_DLC_MASK);
                memcpy(cf->data, &desc->data[2], cf->can_dlc);
        } else {
-               cf->can_dlc = get_can_dlc(desc->data[0] & ICAN3_CAN_DLC_MASK);
+               cf->can_dlc = can_cc_dlc2len(desc->data[0] & ICAN3_CAN_DLC_MASK);
                if (desc->data[0] & ICAN3_EFF_RTR)
                        cf->can_id |= CAN_RTR_FLAG;
 

diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
index f3fc37e..2e46a59 100644 (file)
--- a/drivers/net/can/m_can/m_can.c
+++ b/drivers/net/can/m_can/m_can.c
@@ -459,7 +459,7 @@ static void m_can_read_fifo(struct net_device *dev, u32 rxfs)
        if (dlc & RX_BUF_FDF)
                cf->len = can_dlc2len((dlc >> 16) & 0x0F);
        else
-               cf->len = get_can_dlc((dlc >> 16) & 0x0F);
+               cf->len = can_cc_dlc2len((dlc >> 16) & 0x0F);
 
        id = m_can_fifo_read(cdev, fgi, M_CAN_FIFO_ID);
        if (id & RX_BUF_XTD)

diff --git a/drivers/net/can/mscan/mscan.c b/drivers/net/can/mscan/mscan.c
index 640ba1b..95bf733 100644 (file)
--- a/drivers/net/can/mscan/mscan.c
+++ b/drivers/net/can/mscan/mscan.c
@@ -312,7 +312,7 @@ static void mscan_get_rx_frame(struct net_device *dev, struct can_frame *frame)
        if (can_id & 1)
                frame->can_id |= CAN_RTR_FLAG;
 
-       frame->can_dlc = get_can_dlc(in_8(&regs->rx.dlr) & 0xf);
+       frame->can_dlc = can_cc_dlc2len(in_8(&regs->rx.dlr) & 0xf);
 
        if (!(frame->can_id & CAN_RTR_FLAG)) {
                void __iomem *data = &regs->rx.dsr1_0;

diff --git a/drivers/net/can/pch_can.c b/drivers/net/can/pch_can.c
index 5c180d2..9509bac 100644 (file)
--- a/drivers/net/can/pch_can.c
+++ b/drivers/net/can/pch_can.c
@@ -683,7 +683,7 @@ static int pch_can_rx_normal(struct net_device *ndev, u32 obj_num, int quota)
                if (id2 & PCH_ID2_DIR)
                        cf->can_id |= CAN_RTR_FLAG;
 
-               cf->can_dlc = get_can_dlc((ioread32(&priv->regs->
+               cf->can_dlc = can_cc_dlc2len((ioread32(&priv->regs->
                                                    ifregs[0].mcont)) & 0xF);
 
                for (i = 0; i < cf->can_dlc; i += 2) {
@@ -715,7 +715,7 @@ static void pch_can_tx_complete(struct net_device *ndev, u32 int_stat)
        iowrite32(PCH_CMASK_RX_TX_GET | PCH_CMASK_CLRINTPND,
                  &priv->regs->ifregs[1].cmask);
        pch_can_rw_msg_obj(&priv->regs->ifregs[1].creq, int_stat);
-       dlc = get_can_dlc(ioread32(&priv->regs->ifregs[1].mcont) &
+       dlc = can_cc_dlc2len(ioread32(&priv->regs->ifregs[1].mcont) &
                          PCH_IF_MCONT_DLC);
        stats->tx_bytes += dlc;
        stats->tx_packets++;

diff --git a/drivers/net/can/peak_canfd/peak_canfd.c b/drivers/net/can/peak_canfd/peak_canfd.c
index 40c33b8..9ea2ade 100644 (file)
--- a/drivers/net/can/peak_canfd/peak_canfd.c
+++ b/drivers/net/can/peak_canfd/peak_canfd.c
@@ -259,7 +259,7 @@ static int pucan_handle_can_rx(struct peak_canfd_priv *priv,
        if (rx_msg_flags & PUCAN_MSG_EXT_DATA_LEN)
                cf_len = can_dlc2len(get_canfd_dlc(pucan_msg_get_dlc(msg)));
        else
-               cf_len = get_can_dlc(pucan_msg_get_dlc(msg));
+               cf_len = can_cc_dlc2len(pucan_msg_get_dlc(msg));
 
        /* if this frame is an echo, */
        if (rx_msg_flags & PUCAN_MSG_LOOPED_BACK) {

diff --git a/drivers/net/can/rcar/rcar_can.c b/drivers/net/can/rcar/rcar_can.c
index 4857590..711ef49 100644 (file)
--- a/drivers/net/can/rcar/rcar_can.c
+++ b/drivers/net/can/rcar/rcar_can.c
@@ -659,7 +659,7 @@ static void rcar_can_rx_pkt(struct rcar_can_priv *priv)
                cf->can_id = (data >> RCAR_CAN_SID_SHIFT) & CAN_SFF_MASK;
 
        dlc = readb(&priv->regs->mb[RCAR_CAN_RX_FIFO_MBX].dlc);
-       cf->can_dlc = get_can_dlc(dlc);
+       cf->can_dlc = can_cc_dlc2len(dlc);
        if (data & RCAR_CAN_RTR) {
                cf->can_id |= CAN_RTR_FLAG;
        } else {

diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c
index de59dd6..899a321 100644 (file)
--- a/drivers/net/can/rcar/rcar_canfd.c
+++ b/drivers/net/can/rcar/rcar_canfd.c
@@ -1448,7 +1448,7 @@ static void rcar_canfd_rx_pkt(struct rcar_canfd_channel *priv)
                if (sts & RCANFD_RFFDSTS_RFFDF)
                        cf->len = can_dlc2len(RCANFD_RFPTR_RFDLC(dlc));
                else
-                       cf->len = get_can_dlc(RCANFD_RFPTR_RFDLC(dlc));
+                       cf->len = can_cc_dlc2len(RCANFD_RFPTR_RFDLC(dlc));
 
                if (sts & RCANFD_RFFDSTS_RFESI) {
                        cf->flags |= CANFD_ESI;
@@ -1464,7 +1464,7 @@ static void rcar_canfd_rx_pkt(struct rcar_canfd_channel *priv)
                        rcar_canfd_get_data(priv, cf, RCANFD_F_RFDF(ridx, 0));
                }
        } else {
-               cf->len = get_can_dlc(RCANFD_RFPTR_RFDLC(dlc));
+               cf->len = can_cc_dlc2len(RCANFD_RFPTR_RFDLC(dlc));
                if (id & RCANFD_RFID_RFRTR)
                        cf->can_id |= CAN_RTR_FLAG;
                else

diff --git a/drivers/net/can/sja1000/sja1000.c b/drivers/net/can/sja1000/sja1000.c
index 9f10779..1f188f2 100644 (file)
--- a/drivers/net/can/sja1000/sja1000.c
+++ b/drivers/net/can/sja1000/sja1000.c
@@ -367,7 +367,7 @@ static void sja1000_rx(struct net_device *dev)
                    | (priv->read_reg(priv, SJA1000_ID2) >> 5);
        }
 
-       cf->can_dlc = get_can_dlc(fi & 0x0F);
+       cf->can_dlc = can_cc_dlc2len(fi & 0x0F);
        if (fi & SJA1000_FI_RTR) {
                id |= CAN_RTR_FLAG;
        } else {

diff --git a/drivers/net/can/softing/softing_main.c b/drivers/net/can/softing/softing_main.c
index 9d2faaa..39e8275 100644 (file)
--- a/drivers/net/can/softing/softing_main.c
+++ b/drivers/net/can/softing/softing_main.c
@@ -261,7 +261,7 @@ static int softing_handle_1(struct softing *card)
        } else {
                if (cmd & CMD_RTR)
                        msg.can_id |= CAN_RTR_FLAG;
-               msg.can_dlc = get_can_dlc(*ptr++);
+               msg.can_dlc = can_cc_dlc2len(*ptr++);
                if (cmd & CMD_XTD) {
                        msg.can_id |= CAN_EFF_FLAG;
                        msg.can_id |= le32_to_cpup((void *)ptr);

diff --git a/drivers/net/can/spi/hi311x.c b/drivers/net/can/spi/hi311x.c
index 73d48c3..728f34b 100644 (file)
--- a/drivers/net/can/spi/hi311x.c
+++ b/drivers/net/can/spi/hi311x.c
@@ -341,7 +341,7 @@ static void hi3110_hw_rx(struct spi_device *spi)
        }
 
        /* Data length */
-       frame->can_dlc = get_can_dlc(buf[HI3110_FIFO_WOTIME_DLC_OFF] & 0x0F);
+       frame->can_dlc = can_cc_dlc2len(buf[HI3110_FIFO_WOTIME_DLC_OFF] & 0x0F);
 
        if (buf[HI3110_FIFO_WOTIME_ID_OFF + 3] & HI3110_FIFO_WOTIME_ID_RTR)
                frame->can_id |= CAN_RTR_FLAG;

diff --git a/drivers/net/can/spi/mcp251x.c b/drivers/net/can/spi/mcp251x.c
index 22d814a..6ddebb1 100644 (file)
--- a/drivers/net/can/spi/mcp251x.c
+++ b/drivers/net/can/spi/mcp251x.c
@@ -664,7 +664,7 @@ static void mcp251x_hw_rx_frame(struct spi_device *spi, u8 *buf,
                for (i = 1; i < RXBDAT_OFF; i++)
                        buf[i] = mcp251x_read_reg(spi, RXBCTRL(buf_idx) + i);
 
-               len = get_can_dlc(buf[RXBDLC_OFF] & RXBDLC_LEN_MASK);
+               len = can_cc_dlc2len(buf[RXBDLC_OFF] & RXBDLC_LEN_MASK);
                for (; i < (RXBDAT_OFF + len); i++)
                        buf[i] = mcp251x_read_reg(spi, RXBCTRL(buf_idx) + i);
        } else {
@@ -720,7 +720,7 @@ static void mcp251x_hw_rx(struct spi_device *spi, int buf_idx)
                        frame->can_id |= CAN_RTR_FLAG;
        }
        /* Data length */
-       frame->can_dlc = get_can_dlc(buf[RXBDLC_OFF] & RXBDLC_LEN_MASK);
+       frame->can_dlc = can_cc_dlc2len(buf[RXBDLC_OFF] & RXBDLC_LEN_MASK);
        memcpy(frame->data, buf + RXBDAT_OFF, frame->can_dlc);
 
        priv->net->stats.rx_packets++;

diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
index 9c215f7..c0a0840 100644 (file)
--- a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
+++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
@@ -1410,7 +1410,7 @@ mcp251xfd_hw_rx_obj_to_skb(const struct mcp251xfd_priv *priv,
                if (hw_rx_obj->flags & MCP251XFD_OBJ_FLAGS_RTR)
                        cfd->can_id |= CAN_RTR_FLAG;
 
-               cfd->len = get_can_dlc(FIELD_GET(MCP251XFD_OBJ_FLAGS_DLC,
+               cfd->len = can_cc_dlc2len(FIELD_GET(MCP251XFD_OBJ_FLAGS_DLC,
                                                 hw_rx_obj->flags));
        }
 

diff --git a/drivers/net/can/sun4i_can.c b/drivers/net/can/sun4i_can.c
index e2c6cf4..0e25697 100644 (file)
--- a/drivers/net/can/sun4i_can.c
+++ b/drivers/net/can/sun4i_can.c
@@ -475,7 +475,7 @@ static void sun4i_can_rx(struct net_device *dev)
                return;
 
        fi = readl(priv->base + SUN4I_REG_BUF0_ADDR);
-       cf->can_dlc = get_can_dlc(fi & 0x0F);
+       cf->can_dlc = can_cc_dlc2len(fi & 0x0F);
        if (fi & SUN4I_MSG_EFF_FLAG) {
                dreg = SUN4I_REG_BUF5_ADDR;
                id = (readl(priv->base + SUN4I_REG_BUF1_ADDR) << 21) |

diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c
index 2c22f40..0b1fd34 100644 (file)
--- a/drivers/net/can/ti_hecc.c
+++ b/drivers/net/can/ti_hecc.c
@@ -566,7 +566,7 @@ static struct sk_buff *ti_hecc_mailbox_read(struct can_rx_offload *offload,
        data = hecc_read_mbx(priv, mbxno, HECC_CANMCF);
        if (data & HECC_CANMCF_RTR)
                cf->can_id |= CAN_RTR_FLAG;
-       cf->can_dlc = get_can_dlc(data & 0xF);
+       cf->can_dlc = can_cc_dlc2len(data & 0xF);
 
        data = hecc_read_mbx(priv, mbxno, HECC_CANMDL);
        *(__be32 *)(cf->data) = cpu_to_be32(data);

diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c
index 4f52810..2887819 100644 (file)
--- a/drivers/net/can/usb/ems_usb.c
+++ b/drivers/net/can/usb/ems_usb.c
@@ -306,7 +306,7 @@ static void ems_usb_rx_can_msg(struct ems_usb *dev, struct ems_cpc_msg *msg)
                return;
 
        cf->can_id = le32_to_cpu(msg->msg.can_msg.id);
-       cf->can_dlc = get_can_dlc(msg->msg.can_msg.length & 0xF);
+       cf->can_dlc = can_cc_dlc2len(msg->msg.can_msg.length & 0xF);
 
        if (msg->type == CPC_MSG_TYPE_EXT_CAN_FRAME ||
            msg->type == CPC_MSG_TYPE_EXT_RTR_FRAME)

diff --git a/drivers/net/can/usb/esd_usb2.c b/drivers/net/can/usb/esd_usb2.c
index b5d7ed2..72999de 100644 (file)
--- a/drivers/net/can/usb/esd_usb2.c
+++ b/drivers/net/can/usb/esd_usb2.c
@@ -321,7 +321,7 @@ static void esd_usb2_rx_can_msg(struct esd_usb2_net_priv *priv,
                }
 
                cf->can_id = id & ESD_IDMASK;
-               cf->can_dlc = get_can_dlc(msg->msg.rx.dlc & ~ESD_RTR);
+               cf->can_dlc = can_cc_dlc2len(msg->msg.rx.dlc & ~ESD_RTR);
 
                if (id & ESD_EXTID)
                        cf->can_id |= CAN_EFF_FLAG;

diff --git a/drivers/net/can/usb/gs_usb.c b/drivers/net/can/usb/gs_usb.c
index 3005157..b1729b2 100644 (file)
--- a/drivers/net/can/usb/gs_usb.c
+++ b/drivers/net/can/usb/gs_usb.c
@@ -331,7 +331,7 @@ static void gs_usb_receive_bulk_callback(struct urb *urb)
 
                cf->can_id = hf->can_id;
 
-               cf->can_dlc = get_can_dlc(hf->can_dlc);
+               cf->can_dlc = can_cc_dlc2len(hf->can_dlc);
                memcpy(cf->data, hf->data, 8);
 
                /* ERROR frames tell us information about the controller */

diff --git a/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c b/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c
index 218fadc..493a614 100644 (file)
--- a/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c
+++ b/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c
@@ -1180,7 +1180,7 @@ static void kvaser_usb_hydra_rx_msg_std(const struct kvaser_usb *dev,
        if (flags & KVASER_USB_HYDRA_CF_FLAG_OVERRUN)
                kvaser_usb_can_rx_over_error(priv->netdev);
 
-       cf->can_dlc = get_can_dlc(cmd->rx_can.dlc);
+       cf->can_dlc = can_cc_dlc2len(cmd->rx_can.dlc);
 
        if (flags & KVASER_USB_HYDRA_CF_FLAG_REMOTE_FRAME)
                cf->can_id |= CAN_RTR_FLAG;
@@ -1257,7 +1257,7 @@ static void kvaser_usb_hydra_rx_msg_ext(const struct kvaser_usb *dev,
                if (flags & KVASER_USB_HYDRA_CF_FLAG_ESI)
                        cf->flags |= CANFD_ESI;
        } else {
-               cf->len = get_can_dlc(dlc);
+               cf->len = can_cc_dlc2len(dlc);
        }
 
        if (flags & KVASER_USB_HYDRA_CF_FLAG_REMOTE_FRAME)

diff --git a/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c b/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
index 1b9957f..916ab99 100644 (file)
--- a/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
+++ b/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
@@ -978,7 +978,7 @@ static void kvaser_usb_leaf_rx_can_msg(const struct kvaser_usb *dev,
                else
                        cf->can_id &= CAN_SFF_MASK;
 
-               cf->can_dlc = get_can_dlc(cmd->u.leaf.log_message.dlc);
+               cf->can_dlc = can_cc_dlc2len(cmd->u.leaf.log_message.dlc);
 
                if (cmd->u.leaf.log_message.flags & MSG_FLAG_REMOTE_FRAME)
                        cf->can_id |= CAN_RTR_FLAG;
@@ -996,7 +996,7 @@ static void kvaser_usb_leaf_rx_can_msg(const struct kvaser_usb *dev,
                        cf->can_id |= CAN_EFF_FLAG;
                }
 
-               cf->can_dlc = get_can_dlc(rx_data[5]);
+               cf->can_dlc = can_cc_dlc2len(rx_data[5]);
 
                if (cmd->u.rx_can_header.flag & MSG_FLAG_REMOTE_FRAME)
                        cf->can_id |= CAN_RTR_FLAG;

diff --git a/drivers/net/can/usb/mcba_usb.c b/drivers/net/can/usb/mcba_usb.c
index e97f2e0..295886c 100644 (file)
--- a/drivers/net/can/usb/mcba_usb.c
+++ b/drivers/net/can/usb/mcba_usb.c
@@ -451,7 +451,7 @@ static void mcba_usb_process_can(struct mcba_priv *priv,
        if (msg->dlc & MCBA_DLC_RTR_MASK)
                cf->can_id |= CAN_RTR_FLAG;
 
-       cf->can_dlc = get_can_dlc(msg->dlc & MCBA_DLC_MASK);
+       cf->can_dlc = can_cc_dlc2len(msg->dlc & MCBA_DLC_MASK);
 
        memcpy(cf->data, msg->data, cf->can_dlc);
 

diff --git a/drivers/net/can/usb/peak_usb/pcan_usb.c b/drivers/net/can/usb/peak_usb/pcan_usb.c
index 63bd2ed..f7fc822 100644 (file)
--- a/drivers/net/can/usb/peak_usb/pcan_usb.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb.c
@@ -734,7 +734,7 @@ static int pcan_usb_decode_data(struct pcan_usb_msg_context *mc, u8 status_len)
                cf->can_id = le16_to_cpu(tmp16) >> 5;
        }
 
-       cf->can_dlc = get_can_dlc(rec_len);
+       cf->can_dlc = can_cc_dlc2len(rec_len);
 
        /* Only first packet timestamp is a word */
        if (pcan_usb_decode_ts(mc, !mc->rec_ts_idx))

diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_fd.c b/drivers/net/can/usb/peak_usb/pcan_usb_fd.c
index d29d205..1f08dd2 100644 (file)
--- a/drivers/net/can/usb/peak_usb/pcan_usb_fd.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb_fd.c
@@ -499,7 +499,7 @@ static int pcan_usb_fd_decode_canmsg(struct pcan_usb_fd_if *usb_if,
                if (!skb)
                        return -ENOMEM;
 
-               cfd->len = get_can_dlc(pucan_msg_get_dlc(rm));
+               cfd->len = can_cc_dlc2len(pucan_msg_get_dlc(rm));
        }
 
        cfd->can_id = le32_to_cpu(rm->can_id);

diff --git a/drivers/net/can/usb/ucan.c b/drivers/net/can/usb/ucan.c
index dc5290b..072058c 100644 (file)
--- a/drivers/net/can/usb/ucan.c
+++ b/drivers/net/can/usb/ucan.c
@@ -303,12 +303,12 @@ struct ucan_priv {
        struct ucan_urb_context *context_array;
 };
 
-static u8 ucan_get_can_dlc(struct ucan_can_msg *msg, u16 len)
+static u8 ucan_can_cc_dlc2len(struct ucan_can_msg *msg, u16 len)
 {
        if (le32_to_cpu(msg->id) & CAN_RTR_FLAG)
-               return get_can_dlc(msg->dlc);
+               return can_cc_dlc2len(msg->dlc);
        else
-               return get_can_dlc(len - (UCAN_IN_HDR_SIZE + sizeof(msg->id)));
+               return can_cc_dlc2len(len - (UCAN_IN_HDR_SIZE + sizeof(msg->id)));
 }
 
 static void ucan_release_context_array(struct ucan_priv *up)
@@ -614,7 +614,7 @@ static void ucan_rx_can_msg(struct ucan_priv *up, struct ucan_message_in *m)
        cf->can_id = canid;
 
        /* compute DLC taking RTR_FLAG into account */
-       cf->can_dlc = ucan_get_can_dlc(&m->msg.can_msg, len);
+       cf->can_dlc = ucan_can_cc_dlc2len(&m->msg.can_msg, len);
 
        /* copy the payload of non RTR frames */
        if (!(cf->can_id & CAN_RTR_FLAG) || (cf->can_id & CAN_ERR_FLAG))

diff --git a/drivers/net/can/usb/usb_8dev.c b/drivers/net/can/usb/usb_8dev.c
index 62749c6..216c58f 100644 (file)
--- a/drivers/net/can/usb/usb_8dev.c
+++ b/drivers/net/can/usb/usb_8dev.c
@@ -470,7 +470,7 @@ static void usb_8dev_rx_can_msg(struct usb_8dev_priv *priv,
                        return;
 
                cf->can_id = be32_to_cpu(msg->id);
-               cf->can_dlc = get_can_dlc(msg->dlc & 0xF);
+               cf->can_dlc = can_cc_dlc2len(msg->dlc & 0xF);
 
                if (msg->flags & USB_8DEV_EXTID)
                        cf->can_id |= CAN_EFF_FLAG;

diff --git a/drivers/net/can/xilinx_can.c b/drivers/net/can/xilinx_can.c
index 48d746e..73e8b1d 100644 (file)
--- a/drivers/net/can/xilinx_can.c
+++ b/drivers/net/can/xilinx_can.c
@@ -759,7 +759,7 @@ static int xcan_rx(struct net_device *ndev, int frame_base)
                                   XCAN_DLCR_DLC_SHIFT;
 
        /* Change Xilinx CAN data length format to socketCAN data format */
-       cf->can_dlc = get_can_dlc(dlc);
+       cf->can_dlc = can_cc_dlc2len(dlc);
 
        /* Change Xilinx CAN ID format to socketCAN ID format */
        if (id_xcan & XCAN_IDR_IDE_MASK) {
@@ -835,7 +835,7 @@ static int xcanfd_rx(struct net_device *ndev, int frame_base)
                cf->len = can_dlc2len((dlc & XCAN_DLCR_DLC_MASK) >>
                                  XCAN_DLCR_DLC_SHIFT);
        else
-               cf->len = get_can_dlc((dlc & XCAN_DLCR_DLC_MASK) >>
+               cf->len = can_cc_dlc2len((dlc & XCAN_DLCR_DLC_MASK) >>
                                          XCAN_DLCR_DLC_SHIFT);
 
        /* Change Xilinx CAN ID format to socketCAN ID format */

diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
index 41ff317..9bc84c6 100644 (file)
--- a/include/linux/can/dev.h
+++ b/include/linux/can/dev.h
@@ -98,14 +98,14 @@ static inline unsigned int can_bit_time(const struct can_bittiming *bt)
 }
 
 /*
- * get_can_dlc(value) - helper macro to cast a given data length code (dlc)
- * to u8 and ensure the dlc value to be max. 8 bytes.
+ * can_cc_dlc2len(value) - convert a given data length code (dlc) of a
+ * Classical CAN frame into a valid data length of max. 8 bytes.
  *
  * To be used in the CAN netdriver receive path to ensure conformance with
  * ISO 11898-1 Chapter 8.4.2.3 (DLC field)
  */
-#define get_can_dlc(i)         (min_t(u8, (i), CAN_MAX_DLC))
-#define get_canfd_dlc(i)       (min_t(u8, (i), CANFD_MAX_DLC))
+#define can_cc_dlc2len(dlc)    (min_t(u8, (dlc), CAN_MAX_DLEN))
+#define get_canfd_dlc(dlc)     (min_t(u8, (dlc), CANFD_MAX_DLC))
 
 /* Check for outgoing skbs that have not been created by the CAN subsystem */
 static inline bool can_skb_headroom_valid(struct net_device *dev,