diff options
Diffstat (limited to 'drivers/net/can')
| -rw-r--r-- | drivers/net/can/ctucanfd/ctucanfd_base.c | 1 | ||||
| -rw-r--r-- | drivers/net/can/dev/rx-offload.c | 4 | ||||
| -rw-r--r-- | drivers/net/can/dev/skb.c | 113 | ||||
| -rw-r--r-- | drivers/net/can/flexcan/flexcan-core.c | 59 | ||||
| -rw-r--r-- | drivers/net/can/flexcan/flexcan.h | 20 | ||||
| -rw-r--r-- | drivers/net/can/kvaser_pciefd.c | 7 | ||||
| -rw-r--r-- | drivers/net/can/rcar/rcar_canfd.c | 26 | ||||
| -rw-r--r-- | drivers/net/can/sja1000/peak_pcmcia.c | 2 | ||||
| -rw-r--r-- | drivers/net/can/sja1000/sja1000.c | 6 | ||||
| -rw-r--r-- | drivers/net/can/sja1000/sja1000_platform.c | 38 | ||||
| -rw-r--r-- | drivers/net/can/usb/etas_es58x/es58x_core.h | 2 | ||||
| -rw-r--r-- | drivers/net/can/usb/gs_usb.c | 215 | ||||
| -rw-r--r-- | drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c | 20 | ||||
| -rw-r--r-- | drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 | ||||
| -rw-r--r-- | drivers/net/can/vcan.c | 12 | ||||
| -rw-r--r-- | drivers/net/can/vxcan.c | 8 |
16 files changed, 386 insertions, 149 deletions
diff --git a/drivers/net/can/ctucanfd/ctucanfd_base.c b/drivers/net/can/ctucanfd/ctucanfd_base.c index 3c18d028bd8c..c4026712ab7d 100644 --- a/drivers/net/can/ctucanfd/ctucanfd_base.c +++ b/drivers/net/can/ctucanfd/ctucanfd_base.c @@ -657,7 +657,6 @@ static void ctucan_read_rx_frame(struct ctucan_priv *priv, struct canfd_frame *c cf->can_id = (idw >> 18) & CAN_SFF_MASK; /* BRS, ESI, RTR Flags */ - cf->flags = 0; if (FIELD_GET(REG_FRAME_FORMAT_W_FDF, ffw)) { if (FIELD_GET(REG_FRAME_FORMAT_W_BRS, ffw)) cf->flags |= CANFD_BRS; diff --git a/drivers/net/can/dev/rx-offload.c b/drivers/net/can/dev/rx-offload.c index a32a01c172d4..81ebf0562c89 100644 --- a/drivers/net/can/dev/rx-offload.c +++ b/drivers/net/can/dev/rx-offload.c @@ -247,7 +247,7 @@ unsigned int can_rx_offload_get_echo_skb(struct can_rx_offload *offload, struct net_device *dev = offload->dev; struct net_device_stats *stats = &dev->stats; struct sk_buff *skb; - u8 len; + unsigned int len; int err; skb = __can_get_echo_skb(dev, idx, &len, frame_len_ptr); @@ -329,7 +329,7 @@ static int can_rx_offload_init_queue(struct net_device *dev, { offload->dev = dev; - /* Limit queue len to 4x the weight (rounted to next power of two) */ + /* Limit queue len to 4x the weight (rounded to next power of two) */ offload->skb_queue_len_max = 2 << fls(weight); offload->skb_queue_len_max *= 4; skb_queue_head_init(&offload->skb_queue); diff --git a/drivers/net/can/dev/skb.c b/drivers/net/can/dev/skb.c index 07e0feac8629..791a51e2f5d6 100644 --- a/drivers/net/can/dev/skb.c +++ b/drivers/net/can/dev/skb.c @@ -91,8 +91,8 @@ int can_put_echo_skb(struct sk_buff *skb, struct net_device *dev, EXPORT_SYMBOL_GPL(can_put_echo_skb); struct sk_buff * -__can_get_echo_skb(struct net_device *dev, unsigned int idx, u8 *len_ptr, - unsigned int *frame_len_ptr) +__can_get_echo_skb(struct net_device *dev, unsigned int idx, + unsigned int *len_ptr, unsigned int *frame_len_ptr) { struct can_priv *priv = netdev_priv(dev); @@ -108,16 +108,12 @@ __can_get_echo_skb(struct net_device *dev, unsigned int idx, u8 *len_ptr, */ struct sk_buff *skb = priv->echo_skb[idx]; struct can_skb_priv *can_skb_priv = can_skb_prv(skb); - struct canfd_frame *cf = (struct canfd_frame *)skb->data; if (skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS) skb_tstamp_tx(skb, skb_hwtstamps(skb)); /* get the real payload length for netdev statistics */ - if (cf->can_id & CAN_RTR_FLAG) - *len_ptr = 0; - else - *len_ptr = cf->len; + *len_ptr = can_skb_get_data_len(skb); if (frame_len_ptr) *frame_len_ptr = can_skb_priv->frame_len; @@ -147,7 +143,7 @@ unsigned int can_get_echo_skb(struct net_device *dev, unsigned int idx, unsigned int *frame_len_ptr) { struct sk_buff *skb; - u8 len; + unsigned int len; skb = __can_get_echo_skb(dev, idx, &len, frame_len_ptr); if (!skb) @@ -191,6 +187,20 @@ void can_free_echo_skb(struct net_device *dev, unsigned int idx, } EXPORT_SYMBOL_GPL(can_free_echo_skb); +/* fill common values for CAN sk_buffs */ +static void init_can_skb_reserve(struct sk_buff *skb) +{ + skb->pkt_type = PACKET_BROADCAST; + skb->ip_summed = CHECKSUM_UNNECESSARY; + + skb_reset_mac_header(skb); + skb_reset_network_header(skb); + skb_reset_transport_header(skb); + + can_skb_reserve(skb); + can_skb_prv(skb)->skbcnt = 0; +} + struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf) { struct sk_buff *skb; @@ -204,16 +214,8 @@ struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf) } skb->protocol = htons(ETH_P_CAN); - skb->pkt_type = PACKET_BROADCAST; - skb->ip_summed = CHECKSUM_UNNECESSARY; - - skb_reset_mac_header(skb); - skb_reset_network_header(skb); - skb_reset_transport_header(skb); - - can_skb_reserve(skb); + init_can_skb_reserve(skb); can_skb_prv(skb)->ifindex = dev->ifindex; - can_skb_prv(skb)->skbcnt = 0; *cf = skb_put_zero(skb, sizeof(struct can_frame)); @@ -235,23 +237,51 @@ struct sk_buff *alloc_canfd_skb(struct net_device *dev, } skb->protocol = htons(ETH_P_CANFD); - skb->pkt_type = PACKET_BROADCAST; - skb->ip_summed = CHECKSUM_UNNECESSARY; - - skb_reset_mac_header(skb); - skb_reset_network_header(skb); - skb_reset_transport_header(skb); - - can_skb_reserve(skb); + init_can_skb_reserve(skb); can_skb_prv(skb)->ifindex = dev->ifindex; - can_skb_prv(skb)->skbcnt = 0; *cfd = skb_put_zero(skb, sizeof(struct canfd_frame)); + /* set CAN FD flag by default */ + (*cfd)->flags = CANFD_FDF; + return skb; } EXPORT_SYMBOL_GPL(alloc_canfd_skb); +struct sk_buff *alloc_canxl_skb(struct net_device *dev, + struct canxl_frame **cxl, + unsigned int data_len) +{ + struct sk_buff *skb; + + if (data_len < CANXL_MIN_DLEN || data_len > CANXL_MAX_DLEN) + goto out_error; + + skb = netdev_alloc_skb(dev, sizeof(struct can_skb_priv) + + CANXL_HDR_SIZE + data_len); + if (unlikely(!skb)) + goto out_error; + + skb->protocol = htons(ETH_P_CANXL); + init_can_skb_reserve(skb); + can_skb_prv(skb)->ifindex = dev->ifindex; + + *cxl = skb_put_zero(skb, CANXL_HDR_SIZE + data_len); + + /* set CAN XL flag and length information by default */ + (*cxl)->flags = CANXL_XLF; + (*cxl)->len = data_len; + + return skb; + +out_error: + *cxl = NULL; + + return NULL; +} +EXPORT_SYMBOL_GPL(alloc_canxl_skb); + struct sk_buff *alloc_can_err_skb(struct net_device *dev, struct can_frame **cf) { struct sk_buff *skb; @@ -291,6 +321,14 @@ static bool can_skb_headroom_valid(struct net_device *dev, struct sk_buff *skb) skb_reset_mac_header(skb); skb_reset_network_header(skb); skb_reset_transport_header(skb); + + /* set CANFD_FDF flag for CAN FD frames */ + if (can_is_canfd_skb(skb)) { + struct canfd_frame *cfd; + + cfd = (struct canfd_frame *)skb->data; + cfd->flags |= CANFD_FDF; + } } return true; @@ -299,18 +337,25 @@ static bool can_skb_headroom_valid(struct net_device *dev, struct sk_buff *skb) /* Drop a given socketbuffer if it does not contain a valid CAN frame. */ bool can_dropped_invalid_skb(struct net_device *dev, struct sk_buff *skb) { - const struct canfd_frame *cfd = (struct canfd_frame *)skb->data; struct can_priv *priv = netdev_priv(dev); - if (skb->protocol == htons(ETH_P_CAN)) { - if (unlikely(skb->len != CAN_MTU || - cfd->len > CAN_MAX_DLEN)) + switch (ntohs(skb->protocol)) { + case ETH_P_CAN: + if (!can_is_can_skb(skb)) goto inval_skb; - } else if (skb->protocol == htons(ETH_P_CANFD)) { - if (unlikely(skb->len != CANFD_MTU || - cfd->len > CANFD_MAX_DLEN)) + break; + + case ETH_P_CANFD: + if (!can_is_canfd_skb(skb)) goto inval_skb; - } else { + break; + + case ETH_P_CANXL: + if (!can_is_canxl_skb(skb)) + goto inval_skb; + break; + + default: goto inval_skb; } diff --git a/drivers/net/can/flexcan/flexcan-core.c b/drivers/net/can/flexcan/flexcan-core.c index ccb438eca517..5ee38e586fd8 100644 --- a/drivers/net/can/flexcan/flexcan-core.c +++ b/drivers/net/can/flexcan/flexcan-core.c @@ -295,45 +295,45 @@ static_assert(sizeof(struct flexcan_regs) == 0x4 * 18 + 0xfb8); static const struct flexcan_devtype_data fsl_mcf5441x_devtype_data = { .quirks = FLEXCAN_QUIRK_BROKEN_PERR_STATE | FLEXCAN_QUIRK_NR_IRQ_3 | FLEXCAN_QUIRK_NR_MB_16 | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX | - FLEXCAN_QUIRK_SUPPPORT_RX_FIFO, + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX | + FLEXCAN_QUIRK_SUPPORT_RX_FIFO, }; static const struct flexcan_devtype_data fsl_p1010_devtype_data = { .quirks = FLEXCAN_QUIRK_BROKEN_WERR_STATE | FLEXCAN_QUIRK_BROKEN_PERR_STATE | FLEXCAN_QUIRK_DEFAULT_BIG_ENDIAN | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX | - FLEXCAN_QUIRK_SUPPPORT_RX_FIFO, + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX | + FLEXCAN_QUIRK_SUPPORT_RX_FIFO, }; static const struct flexcan_devtype_data fsl_imx25_devtype_data = { .quirks = FLEXCAN_QUIRK_BROKEN_WERR_STATE | FLEXCAN_QUIRK_BROKEN_PERR_STATE | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX | - FLEXCAN_QUIRK_SUPPPORT_RX_FIFO, + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX | + FLEXCAN_QUIRK_SUPPORT_RX_FIFO, }; static const struct flexcan_devtype_data fsl_imx28_devtype_data = { .quirks = FLEXCAN_QUIRK_BROKEN_PERR_STATE | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX | - FLEXCAN_QUIRK_SUPPPORT_RX_FIFO, + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX | + FLEXCAN_QUIRK_SUPPORT_RX_FIFO, }; static const struct flexcan_devtype_data fsl_imx6q_devtype_data = { .quirks = FLEXCAN_QUIRK_DISABLE_RXFG | FLEXCAN_QUIRK_ENABLE_EACEN_RRS | FLEXCAN_QUIRK_USE_RX_MAILBOX | FLEXCAN_QUIRK_BROKEN_PERR_STATE | FLEXCAN_QUIRK_SETUP_STOP_MODE_GPR | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX_RTR, + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX | + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX_RTR, }; static const struct flexcan_devtype_data fsl_imx8qm_devtype_data = { .quirks = FLEXCAN_QUIRK_DISABLE_RXFG | FLEXCAN_QUIRK_ENABLE_EACEN_RRS | FLEXCAN_QUIRK_USE_RX_MAILBOX | FLEXCAN_QUIRK_BROKEN_PERR_STATE | FLEXCAN_QUIRK_SUPPORT_FD | FLEXCAN_QUIRK_SETUP_STOP_MODE_SCFW | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX_RTR, + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX | + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX_RTR, }; static struct flexcan_devtype_data fsl_imx8mp_devtype_data = { @@ -341,23 +341,23 @@ static struct flexcan_devtype_data fsl_imx8mp_devtype_data = { FLEXCAN_QUIRK_DISABLE_MECR | FLEXCAN_QUIRK_USE_RX_MAILBOX | FLEXCAN_QUIRK_BROKEN_PERR_STATE | FLEXCAN_QUIRK_SETUP_STOP_MODE_GPR | FLEXCAN_QUIRK_SUPPORT_FD | FLEXCAN_QUIRK_SUPPORT_ECC | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX_RTR, + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX | + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX_RTR, }; static const struct flexcan_devtype_data fsl_vf610_devtype_data = { .quirks = FLEXCAN_QUIRK_DISABLE_RXFG | FLEXCAN_QUIRK_ENABLE_EACEN_RRS | FLEXCAN_QUIRK_DISABLE_MECR | FLEXCAN_QUIRK_USE_RX_MAILBOX | FLEXCAN_QUIRK_BROKEN_PERR_STATE | FLEXCAN_QUIRK_SUPPORT_ECC | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX_RTR, + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX | + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX_RTR, }; static const struct flexcan_devtype_data fsl_ls1021a_r2_devtype_data = { .quirks = FLEXCAN_QUIRK_DISABLE_RXFG | FLEXCAN_QUIRK_ENABLE_EACEN_RRS | FLEXCAN_QUIRK_BROKEN_PERR_STATE | FLEXCAN_QUIRK_USE_RX_MAILBOX | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX_RTR, + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX | + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX_RTR, }; static const struct flexcan_devtype_data fsl_lx2160a_r1_devtype_data = { @@ -365,8 +365,8 @@ static const struct flexcan_devtype_data fsl_lx2160a_r1_devtype_data = { FLEXCAN_QUIRK_DISABLE_MECR | FLEXCAN_QUIRK_BROKEN_PERR_STATE | FLEXCAN_QUIRK_USE_RX_MAILBOX | FLEXCAN_QUIRK_SUPPORT_FD | FLEXCAN_QUIRK_SUPPORT_ECC | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX_RTR, + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX | + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX_RTR, }; static const struct can_bittiming_const flexcan_bittiming_const = { @@ -2085,20 +2085,20 @@ static int flexcan_probe(struct platform_device *pdev) if ((devtype_data->quirks & FLEXCAN_QUIRK_SUPPORT_FD) && !((devtype_data->quirks & (FLEXCAN_QUIRK_USE_RX_MAILBOX | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX_RTR | - FLEXCAN_QUIRK_SUPPPORT_RX_FIFO)) == + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX | + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX_RTR | + FLEXCAN_QUIRK_SUPPORT_RX_FIFO)) == (FLEXCAN_QUIRK_USE_RX_MAILBOX | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX_RTR))) { + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX | + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX_RTR))) { dev_err(&pdev->dev, "CAN-FD mode doesn't work in RX-FIFO mode!\n"); return -EINVAL; } if ((devtype_data->quirks & - (FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX_RTR)) == - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX_RTR) { + (FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX | + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX_RTR)) == + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX_RTR) { dev_err(&pdev->dev, "Quirks (0x%08x) inconsistent: RX_MAILBOX_RX supported but not RX_MAILBOX\n", devtype_data->quirks); @@ -2177,8 +2177,7 @@ static int flexcan_probe(struct platform_device *pdev) err = flexcan_setup_stop_mode(pdev); if (err < 0) { - if (err != -EPROBE_DEFER) - dev_err(&pdev->dev, "setup stop mode failed\n"); + dev_err_probe(&pdev->dev, err, "setup stop mode failed\n"); goto failed_setup_stop_mode; } diff --git a/drivers/net/can/flexcan/flexcan.h b/drivers/net/can/flexcan/flexcan.h index 8621a8ea1dea..025c3417031f 100644 --- a/drivers/net/can/flexcan/flexcan.h +++ b/drivers/net/can/flexcan/flexcan.h @@ -63,11 +63,11 @@ /* Setup 16 mailboxes */ #define FLEXCAN_QUIRK_NR_MB_16 BIT(13) /* Device supports RX via mailboxes */ -#define FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX BIT(14) +#define FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX BIT(14) /* Device supports RTR reception via mailboxes */ -#define FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX_RTR BIT(15) +#define FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX_RTR BIT(15) /* Device supports RX via FIFO */ -#define FLEXCAN_QUIRK_SUPPPORT_RX_FIFO BIT(16) +#define FLEXCAN_QUIRK_SUPPORT_RX_FIFO BIT(16) struct flexcan_devtype_data { u32 quirks; /* quirks needed for different IP cores */ @@ -121,7 +121,7 @@ flexcan_supports_rx_mailbox(const struct flexcan_priv *priv) { const u32 quirks = priv->devtype_data.quirks; - return quirks & FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX; + return quirks & FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX; } static inline bool @@ -129,10 +129,10 @@ flexcan_supports_rx_mailbox_rtr(const struct flexcan_priv *priv) { const u32 quirks = priv->devtype_data.quirks; - return (quirks & (FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX_RTR)) == - (FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX | - FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX_RTR); + return (quirks & (FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX | + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX_RTR)) == + (FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX | + FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX_RTR); } static inline bool @@ -140,7 +140,7 @@ flexcan_supports_rx_fifo(const struct flexcan_priv *priv) { const u32 quirks = priv->devtype_data.quirks; - return quirks & FLEXCAN_QUIRK_SUPPPORT_RX_FIFO; + return quirks & FLEXCAN_QUIRK_SUPPORT_RX_FIFO; } static inline bool @@ -149,7 +149,7 @@ flexcan_active_rx_rtr(const struct flexcan_priv *priv) const u32 quirks = priv->devtype_data.quirks; if (quirks & FLEXCAN_QUIRK_USE_RX_MAILBOX) { - if (quirks & FLEXCAN_QUIRK_SUPPPORT_RX_MAILBOX_RTR) + if (quirks & FLEXCAN_QUIRK_SUPPORT_RX_MAILBOX_RTR) return true; } else { /* RX-FIFO is always RTR capable */ diff --git a/drivers/net/can/kvaser_pciefd.c b/drivers/net/can/kvaser_pciefd.c index ed54c0b3c7d4..4e9680c8eb34 100644 --- a/drivers/net/can/kvaser_pciefd.c +++ b/drivers/net/can/kvaser_pciefd.c @@ -329,12 +329,9 @@ MODULE_DEVICE_TABLE(pci, kvaser_pciefd_id_table); static int kvaser_pciefd_spi_wait_loop(struct kvaser_pciefd *pcie, int msk) { u32 res; - int ret; - - ret = readl_poll_timeout(pcie->reg_base + KVASER_PCIEFD_SPI_STATUS_REG, - res, res & msk, 0, 10); - return ret; + return readl_poll_timeout(pcie->reg_base + KVASER_PCIEFD_SPI_STATUS_REG, + res, res & msk, 0, 10); } static int kvaser_pciefd_spi_cmd(struct kvaser_pciefd *pcie, const u8 *tx, diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c index 27085b796e75..567620d215f8 100644 --- a/drivers/net/can/rcar/rcar_canfd.c +++ b/drivers/net/can/rcar/rcar_canfd.c @@ -1880,10 +1880,9 @@ static int rcar_canfd_probe(struct platform_device *pdev) /* Global controller context */ gpriv = devm_kzalloc(&pdev->dev, sizeof(*gpriv), GFP_KERNEL); - if (!gpriv) { - err = -ENOMEM; - goto fail_dev; - } + if (!gpriv) + return -ENOMEM; + gpriv->pdev = pdev; gpriv->channels_mask = channels_mask; gpriv->fdmode = fdmode; @@ -1904,12 +1903,9 @@ static int rcar_canfd_probe(struct platform_device *pdev) /* Peripheral clock */ gpriv->clkp = devm_clk_get(&pdev->dev, "fck"); - if (IS_ERR(gpriv->clkp)) { - err = PTR_ERR(gpriv->clkp); - dev_err(&pdev->dev, "cannot get peripheral clock, error %d\n", - err); - goto fail_dev; - } + if (IS_ERR(gpriv->clkp)) + return dev_err_probe(&pdev->dev, PTR_ERR(gpriv->clkp), + "cannot get peripheral clock\n"); /* fCAN clock: Pick External clock. If not available fallback to * CANFD clock @@ -1917,12 +1913,10 @@ static int rcar_canfd_probe(struct platform_device *pdev) gpriv->can_clk = devm_clk_get(&pdev->dev, "can_clk"); if (IS_ERR(gpriv->can_clk) || (clk_get_rate(gpriv->can_clk) == 0)) { gpriv->can_clk = devm_clk_get(&pdev->dev, "canfd"); - if (IS_ERR(gpriv->can_clk)) { - err = PTR_ERR(gpriv->can_clk); - dev_err(&pdev->dev, - "cannot get canfd clock, error %d\n", err); - goto fail_dev; - } + if (IS_ERR(gpriv->can_clk)) + return dev_err_probe(&pdev->dev, PTR_ERR(gpriv->can_clk), + "cannot get canfd clock\n"); + gpriv->fcan = RCANFD_CANFDCLK; } else { diff --git a/drivers/net/can/sja1000/peak_pcmcia.c b/drivers/net/can/sja1000/peak_pcmcia.c index 131a084c3535..ebd5941c3f53 100644 --- a/drivers/net/can/sja1000/peak_pcmcia.c +++ b/drivers/net/can/sja1000/peak_pcmcia.c @@ -478,7 +478,7 @@ static void pcan_free_channels(struct pcan_pccard *card) if (!netdev) continue; - strlcpy(name, netdev->name, IFNAMSIZ); + strscpy(name, netdev->name, IFNAMSIZ); unregister_sja1000dev(netdev); diff --git a/drivers/net/can/sja1000/sja1000.c b/drivers/net/can/sja1000/sja1000.c index 98dfd5f295a7..1bb1129b0450 100644 --- a/drivers/net/can/sja1000/sja1000.c +++ b/drivers/net/can/sja1000/sja1000.c @@ -661,8 +661,6 @@ static const struct ethtool_ops sja1000_ethtool_ops = { int register_sja1000dev(struct net_device *dev) { - int ret; - if (!sja1000_probe_chip(dev)) return -ENODEV; @@ -673,9 +671,7 @@ int register_sja1000dev(struct net_device *dev) set_reset_mode(dev); chipset_init(dev); - ret = register_candev(dev); - - return ret; + return register_candev(dev); } EXPORT_SYMBOL_GPL(register_sja1000dev); diff --git a/drivers/net/can/sja1000/sja1000_platform.c b/drivers/net/can/sja1000/sja1000_platform.c index 81bc741905fd..6779d5357069 100644 --- a/drivers/net/can/sja1000/sja1000_platform.c +++ b/drivers/net/can/sja1000/sja1000_platform.c @@ -14,6 +14,7 @@ #include <linux/irq.h> #include <linux/can/dev.h> #include <linux/can/platform/sja1000.h> +#include <linux/clk.h> #include <linux/io.h> #include <linux/of.h> #include <linux/of_device.h> @@ -103,6 +104,11 @@ static void sp_technologic_init(struct sja1000_priv *priv, struct device_node *o spin_lock_init(&tp->io_lock); } +static void sp_rzn1_init(struct sja1000_priv *priv, struct device_node *of) +{ + priv->flags = SJA1000_QUIRK_NO_CDR_REG; +} + static void sp_populate(struct sja1000_priv *priv, struct sja1000_platform_data *pdata, unsigned long resource_mem_flags) @@ -153,11 +159,13 @@ static void sp_populate_of(struct sja1000_priv *priv, struct device_node *of) priv->write_reg = sp_write_reg8; } - err = of_property_read_u32(of, "nxp,external-clock-frequency", &prop); - if (!err) - priv->can.clock.freq = prop / 2; - else - priv->can.clock.freq = SP_CAN_CLOCK; /* default */ + if (!priv->can.clock.freq) { + err = of_property_read_u32(of, "nxp,external-clock-frequency", &prop); + if (!err) + priv->can.clock.freq = prop / 2; + else + priv->can.clock.freq = SP_CAN_CLOCK; /* default */ + } err = of_property_read_u32(of, "nxp,tx-output-mode", &prop); if (!err) @@ -192,8 +200,13 @@ static struct sja1000_of_data technologic_data = { .init = sp_technologic_init, }; +static struct sja1000_of_data renesas_data = { + .init = sp_rzn1_init, +}; + static const struct of_device_id sp_of_table[] = { { .compatible = "nxp,sja1000", .data = NULL, }, + { .compatible = "renesas,rzn1-sja1000", .data = &renesas_data, }, { .compatible = "technologic,sja1000", .data = &technologic_data, }, { /* sentinel */ }, }; @@ -210,6 +223,7 @@ static int sp_probe(struct platform_device *pdev) struct device_node *of = pdev->dev.of_node; const struct sja1000_of_data *of_data = NULL; size_t priv_sz = 0; + struct clk *clk; pdata = dev_get_platdata(&pdev->dev); if (!pdata && !of) { @@ -234,6 +248,11 @@ static int sp_probe(struct platform_device *pdev) irq = platform_get_irq(pdev, 0); if (irq < 0) return irq; + + clk = devm_clk_get_optional_enabled(&pdev->dev, NULL); + if (IS_ERR(clk)) + return dev_err_probe(&pdev->dev, PTR_ERR(clk), + "CAN clk operation failed"); } else { res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); if (!res_irq) @@ -262,6 +281,15 @@ static int sp_probe(struct platform_device *pdev) priv->reg_base = addr; if (of) { + if (clk) { + priv->can.clock.freq = clk_get_rate(clk) / 2; + if (!priv->can.clock.freq) { + err = -EINVAL; + dev_err(&pdev->dev, "Zero CAN clk rate"); + goto exit_free; + } + } + sp_populate_of(priv, of); if (of_data && of_data->init) diff --git a/drivers/net/can/usb/etas_es58x/es58x_core.h b/drivers/net/can/usb/etas_es58x/es58x_core.h index d769bdf740b7..640fe0a1df63 100644 --- a/drivers/net/can/usb/etas_es58x/es58x_core.h +++ b/drivers/net/can/usb/etas_es58x/es58x_core.h @@ -222,7 +222,7 @@ union es58x_urb_cmd { u8 cmd_type; u8 cmd_id; } __packed; - u8 raw_cmd[0]; + DECLARE_FLEX_ARRAY(u8, raw_cmd); }; /** diff --git a/drivers/net/can/usb/gs_usb.c b/drivers/net/can/usb/gs_usb.c index c1ff3c046d62..5e0d280b0cd3 100644 --- a/drivers/net/can/usb/gs_usb.c +++ b/drivers/net/can/usb/gs_usb.c @@ -10,20 +10,24 @@ */ #include <linux/bitfield.h> +#include <linux/clocksource.h> #include <linux/ethtool.h> #include <linux/init.h> #include <linux/module.h> #include <linux/netdevice.h> #include <linux/signal.h> +#include <linux/timecounter.h> +#include <linux/units.h> #include <linux/usb.h> +#include <linux/workqueue.h> #include <linux/can.h> #include <linux/can/dev.h> #include <linux/can/error.h> /* Device specific constants */ -#define USB_GSUSB_1_VENDOR_ID 0x1d50 -#define USB_GSUSB_1_PRODUCT_ID 0x606f +#define USB_GS_USB_1_VENDOR_ID 0x1d50 +#define USB_GS_USB_1_PRODUCT_ID 0x606f #define USB_CANDLELIGHT_VENDOR_ID 0x1209 #define USB_CANDLELIGHT_PRODUCT_ID 0x2323 @@ -34,8 +38,16 @@ #define USB_ABE_CANDEBUGGER_FD_VENDOR_ID 0x16d0 #define USB_ABE_CANDEBUGGER_FD_PRODUCT_ID 0x10b8 -#define GSUSB_ENDPOINT_IN 1 -#define GSUSB_ENDPOINT_OUT 2 +#define GS_USB_ENDPOINT_IN 1 +#define GS_USB_ENDPOINT_OUT 2 + +/* Timestamp 32 bit timer runs at 1 MHz (1 µs tick). Worker accounts + * for timer overflow (will be after ~71 minutes) + */ +#define GS_USB_TIMESTAMP_TIMER_HZ (1 * HZ_PER_MHZ) +#define GS_USB_TIMESTAMP_WORK_DELAY_SEC 1800 +static_assert(GS_USB_TIMESTAMP_WORK_DELAY_SEC < + CYCLECOUNTER_MASK(32) / GS_USB_TIMESTAMP_TIMER_HZ / 2); /* Device specific constants */ enum gs_usb_breq { @@ -199,6 +211,11 @@ struct classic_can { u8 data[8]; } __packed; +struct classic_can_ts { + u8 data[8]; + __le32 timestamp_us; +} __packed; + struct classic_can_quirk { u8 data[8]; u8 quirk; @@ -208,6 +225,11 @@ struct canfd { u8 data[64]; } __packed; +struct canfd_ts { + u8 data[64]; + __le32 timestamp_us; +} __packed; + struct canfd_quirk { u8 data[64]; u8 quirk; @@ -224,8 +246,10 @@ struct gs_host_frame { union { DECLARE_FLEX_ARRAY(struct classic_can, classic_can); + DECLARE_FLEX_ARRAY(struct classic_can_ts, classic_can_ts); DECLARE_FLEX_ARRAY(struct classic_can_quirk, classic_can_quirk); DECLARE_FLEX_ARRAY(struct canfd, canfd); + DECLARE_FLEX_ARRAY(struct canfd_ts, canfd_ts); DECLARE_FLEX_ARRAY(struct canfd_quirk, canfd_quirk); }; } __packed; @@ -259,6 +283,11 @@ struct gs_can { struct can_bittiming_const bt_const, data_bt_const; unsigned int channel; /* channel number */ + /* time counter for hardware timestamps */ + struct cyclecounter cc; + struct timecounter tc; + struct delayed_work timestamp; + u32 feature; unsigned int hf_size_tx; @@ -351,6 +380,87 @@ static int gs_cmd_reset(struct gs_can *gsdev) return rc; } +static inline int gs_usb_get_timestamp(const struct gs_can *dev, + u32 *timestamp_p) +{ + __le32 timestamp; + int rc; + + rc = usb_control_msg_recv(interface_to_usbdev(dev->iface), + usb_sndctrlpipe(interface_to_usbdev(dev->iface), 0), + GS_USB_BREQ_TIMESTAMP, + USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE, + dev->channel, 0, + ×tamp, sizeof(timestamp), + USB_CTRL_GET_TIMEOUT, + GFP_KERNEL); + if (rc) + return rc; + + *timestamp_p = le32_to_cpu(timestamp); + + return 0; +} + +static u64 gs_usb_timestamp_read(const struct cyclecounter *cc) +{ + const struct gs_can *dev; + u32 timestamp = 0; + int err; + + dev = container_of(cc, struct gs_can, cc); + err = gs_usb_get_timestamp(dev, ×tamp); + if (err) + netdev_err(dev->netdev, + "Error %d while reading timestamp. HW timestamps may be inaccurate.", + err); + + return timestamp; +} + +static void gs_usb_timestamp_work(struct work_struct *work) +{ + struct delayed_work *delayed_work = to_delayed_work(work); + struct gs_can *dev; + + dev = container_of(delayed_work, struct gs_can, timestamp); + timecounter_read(&dev->tc); + + schedule_delayed_work(&dev->timestamp, + GS_USB_TIMESTAMP_WORK_DELAY_SEC * HZ); +} + +static void gs_usb_skb_set_timestamp(const struct gs_can *dev, + struct sk_buff *skb, u32 timestamp) +{ + struct skb_shared_hwtstamps *hwtstamps = skb_hwtstamps(skb); + u64 ns; + + ns = timecounter_cyc2time(&dev->tc, timestamp); + hwtstamps->hwtstamp = ns_to_ktime(ns); +} + +static void gs_usb_timestamp_init(struct gs_can *dev) +{ + struct cyclecounter *cc = &dev->cc; + + cc->read = gs_usb_timestamp_read; + cc->mask = CYCLECOUNTER_MASK(32); + cc->shift = 32 - bits_per(NSEC_PER_SEC / GS_USB_TIMESTAMP_TIMER_HZ); + cc->mult = clocksource_hz2mult(GS_USB_TIMESTAMP_TIMER_HZ, cc->shift); + + timecounter_init(&dev->tc, &dev->cc, ktime_get_real_ns()); + + INIT_DELAYED_WORK(&dev->timestamp, gs_usb_timestamp_work); + schedule_delayed_work(&dev->timestamp, + GS_USB_TIMESTAMP_WORK_DELAY_SEC * HZ); +} + +static void gs_usb_timestamp_stop(struct gs_can *dev) +{ + cancel_delayed_work_sync(&dev->timestamp); +} + static void gs_update_state(struct gs_can *dev, struct can_frame *cf) { struct can_device_stats *can_stats = &dev->can.can_stats; @@ -376,6 +486,24 @@ static void gs_update_state(struct gs_can *dev, struct can_frame *cf) } } +static void gs_usb_set_timestamp(const struct gs_can *dev, struct sk_buff *skb, + const struct gs_host_frame *hf) +{ + u32 timestamp; + + if (!(dev->feature & GS_CAN_FEATURE_HW_TIMESTAMP)) + return; + + if (hf->flags & GS_CAN_FLAG_FD) + timestamp = le32_to_cpu(hf->canfd_ts->timestamp_us); + else + timestamp = le32_to_cpu(hf->classic_can_ts->timestamp_us); + + gs_usb_skb_set_timestamp(dev, skb, timestamp); + + return; +} + static void gs_usb_receive_bulk_callback(struct urb *urb) { struct gs_usb *usbcan = urb->context; @@ -443,6 +571,8 @@ static void gs_usb_receive_bulk_callback(struct urb *urb) gs_update_state(dev, cf); } + gs_usb_set_timestamp(dev, skb, hf); + netdev->stats.rx_packets++; netdev->stats.rx_bytes += hf->can_dlc; @@ -465,6 +595,9 @@ static void gs_usb_receive_bulk_callback(struct urb *urb) goto resubmit_urb; } + skb = dev->can.echo_skb[hf->echo_id]; + gs_usb_set_timestamp(dev, skb, hf); + netdev->stats.tx_packets++; netdev->stats.tx_bytes += can_get_echo_skb(netdev, hf->echo_id, NULL); @@ -491,7 +624,7 @@ static void gs_usb_receive_bulk_callback(struct urb *urb) resubmit_urb: usb_fill_bulk_urb(urb, usbcan->udev, - usb_rcvbulkpipe(usbcan->udev, GSUSB_ENDPOINT_IN), + usb_rcvbulkpipe(usbcan->udev, GS_USB_ENDPOINT_IN), hf, dev->parent->hf_size_rx, gs_usb_receive_bulk_callback, usbcan); @@ -659,7 +792,7 @@ static netdev_tx_t gs_can_start_xmit(struct sk_buff *skb, } usb_fill_bulk_urb(urb, dev->udev, - usb_sndbulkpipe(dev->udev, GSUSB_ENDPOINT_OUT), + usb_sndbulkpipe(dev->udev, GS_USB_ENDPOINT_OUT), hf, dev->hf_size_tx, gs_usb_xmit_callback, txc); @@ -769,7 +902,7 @@ static int gs_can_open(struct net_device *netdev) usb_fill_bulk_urb(urb, dev->udev, usb_rcvbulkpipe(dev->udev, - GSUSB_ENDPOINT_IN), + GS_USB_ENDPOINT_IN), buf, dev->parent->hf_size_rx, gs_usb_receive_bulk_callback, parent); @@ -823,6 +956,10 @@ static int gs_can_open(struct net_device *netdev) if (ctrlmode & CAN_CTRLMODE_3_SAMPLES) flags |= GS_CAN_MODE_TRIPLE_SAMPLE; + /* if hardware supports timestamps, enable it */ + if (dev->feature & GS_CAN_FEATURE_HW_TIMESTAMP) + flags |= GS_CAN_MODE_HW_TIMESTAMP; + /* finally start device */ dev->can.state = CAN_STATE_ERROR_ACTIVE; dm->mode = cpu_to_le32(GS_CAN_MODE_START); @@ -842,6 +979,10 @@ static int gs_can_open(struct net_device *netdev) kfree(dm); + /* start polling timestamp */ + if (dev->feature & GS_CAN_FEATURE_HW_TIMESTAMP) + gs_usb_timestamp_init(dev); + parent->active_channels++; if (!(dev->can.ctrlmode & CAN_CTRLMODE_LISTENONLY)) netif_start_queue(netdev); @@ -858,6 +999,10 @@ static int gs_can_close(struct net_device *netdev) netif_stop_queue(netdev); + /* stop polling timestamp */ + if (dev->feature & GS_CAN_FEATURE_HW_TIMESTAMP) + gs_usb_timestamp_stop(dev); + /* Stop polling */ parent->active_channels--; if (!parent->active_channels) { @@ -890,11 +1035,22 @@ static int gs_can_close(struct net_device *netdev) return 0; } +static int gs_can_eth_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) +{ + const struct gs_can *dev = netdev_priv(netdev); + + if (dev->feature & GS_CAN_FEATURE_HW_TIMESTAMP) + return can_eth_ioctl_hwts(netdev, ifr, cmd); + + return -EOPNOTSUPP; +} + static const struct net_device_ops gs_usb_netdev_ops = { .ndo_open = gs_can_open, .ndo_stop = gs_can_close, .ndo_start_xmit = gs_can_start_xmit, .ndo_change_mtu = can_change_mtu, + .ndo_eth_ioctl = gs_can_eth_ioctl, }; static int gs_usb_set_identify(struct net_device *netdev, bool do_identify) @@ -948,9 +1104,21 @@ static int gs_usb_set_phys_id(struct net_device *netdev, return rc; } +static int gs_usb_get_ts_info(struct net_device *netdev, + struct ethtool_ts_info *info) +{ + struct gs_can *dev = netdev_priv(netdev); + + /* report if device supports HW timestamps */ + if (dev->feature & GS_CAN_FEATURE_HW_TIMESTAMP) + return can_ethtool_op_get_ts_info_hwts(netdev, info); + + return ethtool_op_get_ts_info(netdev, info); +} + static const struct ethtool_ops gs_usb_ethtool_ops = { .set_phys_id = gs_usb_set_phys_id, - .get_ts_info = ethtool_op_get_ts_info, + .get_ts_info = gs_usb_get_ts_info, }; static struct gs_can *gs_make_candev(unsigned int channel, @@ -1067,8 +1235,8 @@ static struct gs_can *gs_make_candev(unsigned int channel, * GS_CAN_FEATURE_QUIRK_BREQ_CANTACT_PRO to workaround this * issue. */ - if (dev->udev->descriptor.idVendor == cpu_to_le16(USB_GSUSB_1_VENDOR_ID) && - dev->udev->descriptor.idProduct == cpu_to_le16(USB_GSUSB_1_PRODUCT_ID) && + if (dev->udev->descriptor.idVendor == cpu_to_le16(USB_GS_USB_1_VENDOR_ID) && + dev->udev->descriptor.idProduct == cpu_to_le16(USB_GS_USB_1_PRODUCT_ID) && dev->udev->manufacturer && dev->udev->product && !strcmp(dev->udev->manufacturer, "LinkLayer Labs") && !strcmp(dev->udev->product, "CANtact Pro") && @@ -1207,15 +1375,13 @@ static int gs_usb_probe(struct usb_interface *intf, } init_usb_anchor(&dev->rx_submitted); - /* default to classic CAN, switch to CAN-FD if at least one of - * our channels support CAN-FD. - */ - dev->hf_size_rx = struct_size(hf, classic_can, 1); usb_set_intfdata(intf, dev); dev->udev = udev; for (i = 0; i < icount; i++) { + unsigned int hf_size_rx = 0; + dev->canch[i] = gs_make_candev(i, intf, dconf); if (IS_ERR_OR_NULL(dev->canch[i])) { /* save error code to return later */ @@ -1233,8 +1399,21 @@ static int gs_usb_probe(struct usb_interface *intf, } dev->canch[i]->parent = dev; - if (dev->canch[i]->can.ctrlmode_supported & CAN_CTRLMODE_FD) - dev->hf_size_rx = struct_size(hf, canfd, 1); + /* set RX packet size based on FD and if hardware + * timestamps are supported. + */ + if (dev->canch[i]->can.ctrlmode_supported & CAN_CTRLMODE_FD) { + if (dev->canch[i]->feature & GS_CAN_FEATURE_HW_TIMESTAMP) + hf_size_rx = struct_size(hf, canfd_ts, 1); + else + hf_size_rx = struct_size(hf, canfd, 1); + } else { + if (dev->canch[i]->feature & GS_CAN_FEATURE_HW_TIMESTAMP) + hf_size_rx = struct_size(hf, classic_can_ts, 1); + else + hf_size_rx = struct_size(hf, classic_can, 1); + } + dev->hf_size_rx = max(dev->hf_size_rx, hf_size_rx); } kfree(dconf); @@ -1263,8 +1442,8 @@ static void gs_usb_disconnect(struct usb_interface *intf) } static const struct usb_device_id gs_usb_table[] = { - { USB_DEVICE_INTERFACE_NUMBER(USB_GSUSB_1_VENDOR_ID, - USB_GSUSB_1_PRODUCT_ID, 0) }, + { USB_DEVICE_INTERFACE_NUMBER(USB_GS_USB_1_VENDOR_ID, + USB_GS_USB_1_PRODUCT_ID, 0) }, { USB_DEVICE_INTERFACE_NUMBER(USB_CANDLELIGHT_VENDOR_ID, USB_CANDLELIGHT_PRODUCT_ID, 0) }, { USB_DEVICE_INTERFACE_NUMBER(USB_CES_CANEXT_FD_VENDOR_ID, 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 dd65c101bfb8..6871d474dabf 100644 --- a/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c +++ b/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c @@ -534,7 +534,7 @@ static int kvaser_usb_hydra_send_simple_cmd(struct kvaser_usb *dev, struct kvaser_cmd *cmd; int err; - cmd = kcalloc(1, sizeof(struct kvaser_cmd), GFP_KERNEL); + cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); if (!cmd) return -ENOMEM; @@ -573,7 +573,7 @@ kvaser_usb_hydra_send_simple_cmd_async(struct kvaser_usb_net_priv *priv, struct kvaser_usb *dev = priv->dev; int err; - cmd = kcalloc(1, sizeof(struct kvaser_cmd), GFP_ATOMIC); + cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC); if (!cmd) return -ENOMEM; @@ -694,7 +694,7 @@ static int kvaser_usb_hydra_map_channel(struct kvaser_usb *dev, u16 transid, struct kvaser_cmd *cmd; int err; - cmd = kcalloc(1, sizeof(struct kvaser_cmd), GFP_KERNEL); + cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); if (!cmd) return -ENOMEM; @@ -735,7 +735,7 @@ static int kvaser_usb_hydra_get_single_capability(struct kvaser_usb *dev, int err; int i; - cmd = kcalloc(1, sizeof(struct kvaser_cmd), GFP_KERNEL); + cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); if (!cmd) return -ENOMEM; @@ -1394,7 +1394,7 @@ kvaser_usb_hydra_frame_to_cmd_ext(const struct kvaser_usb_net_priv *priv, u32 kcan_id; u32 kcan_header; - cmd = kcalloc(1, sizeof(struct kvaser_cmd_ext), GFP_ATOMIC); + cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC); if (!cmd) return NULL; @@ -1468,7 +1468,7 @@ kvaser_usb_hydra_frame_to_cmd_std(const struct kvaser_usb_net_priv *priv, u32 flags; u32 id; - cmd = kcalloc(1, sizeof(struct kvaser_cmd), GFP_ATOMIC); + cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC); if (!cmd) return NULL; @@ -1533,7 +1533,7 @@ static int kvaser_usb_hydra_set_bittiming(struct net_device *netdev) int sjw = bt->sjw; int err; - cmd = kcalloc(1, sizeof(struct kvaser_cmd), GFP_KERNEL); + cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); if (!cmd) return -ENOMEM; @@ -1567,7 +1567,7 @@ static int kvaser_usb_hydra_set_data_bittiming(struct net_device *netdev) int sjw = dbt->sjw; int err; - cmd = kcalloc(1, sizeof(struct kvaser_cmd), GFP_KERNEL); + cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); if (!cmd) return -ENOMEM; @@ -1711,7 +1711,7 @@ static int kvaser_usb_hydra_get_software_details(struct kvaser_usb *dev) u32 flags; struct kvaser_usb_dev_card_data *card_data = &dev->card_data; - cmd = kcalloc(1, sizeof(struct kvaser_cmd), GFP_KERNEL); + cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); if (!cmd) return -ENOMEM; @@ -1851,7 +1851,7 @@ static int kvaser_usb_hydra_set_opt_mode(const struct kvaser_usb_net_priv *priv) return -EINVAL; } - cmd = kcalloc(1, sizeof(struct kvaser_cmd), GFP_KERNEL); + cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); if (!cmd) return -ENOMEM; diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_core.c b/drivers/net/can/usb/peak_usb/pcan_usb_core.c index 8c9d53f6e24c..225697d70a9a 100644 --- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c +++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c @@ -962,7 +962,7 @@ static void peak_usb_disconnect(struct usb_interface *intf) dev_prev_siblings = dev->prev_siblings; dev->state &= ~PCAN_USB_STATE_CONNECTED; - strlcpy(name, netdev->name, IFNAMSIZ); + strscpy(name, netdev->name, IFNAMSIZ); unregister_netdev(netdev); diff --git a/drivers/net/can/vcan.c b/drivers/net/can/vcan.c index 36b6310a2e5b..285635c23443 100644 --- a/drivers/net/can/vcan.c +++ b/drivers/net/can/vcan.c @@ -71,11 +71,10 @@ MODULE_PARM_DESC(echo, "Echo sent frames (for testing). Default: 0 (Off)"); static void vcan_rx(struct sk_buff *skb, struct net_device *dev) { - struct canfd_frame *cfd = (struct canfd_frame *)skb->data; struct net_device_stats *stats = &dev->stats; stats->rx_packets++; - stats->rx_bytes += cfd->len; + stats->rx_bytes += can_skb_get_data_len(skb); skb->pkt_type = PACKET_BROADCAST; skb->dev = dev; @@ -86,14 +85,14 @@ static void vcan_rx(struct sk_buff *skb, struct net_device *dev) static netdev_tx_t vcan_tx(struct sk_buff *skb, struct net_device *dev) { - struct canfd_frame *cfd = (struct canfd_frame *)skb->data; struct net_device_stats *stats = &dev->stats; - int loop, len; + unsigned int len; + int loop; if (can_dropped_invalid_skb(dev, skb)) return NETDEV_TX_OK; - len = cfd->can_id & CAN_RTR_FLAG ? 0 : cfd->len; + len = can_skb_get_data_len(skb); stats->tx_packets++; stats->tx_bytes += len; @@ -137,7 +136,8 @@ static int vcan_change_mtu(struct net_device *dev, int new_mtu) if (dev->flags & IFF_UP) return -EBUSY; - if (new_mtu != CAN_MTU && new_mtu != CANFD_MTU) + if (new_mtu != CAN_MTU && new_mtu != CANFD_MTU && + !can_is_canxl_dev_mtu(new_mtu)) return -EINVAL; dev->mtu = new_mtu; diff --git a/drivers/net/can/vxcan.c b/drivers/net/can/vxcan.c index cffd107d8b28..26a472d2ea58 100644 --- a/drivers/net/can/vxcan.c +++ b/drivers/net/can/vxcan.c @@ -38,10 +38,9 @@ static netdev_tx_t vxcan_xmit(struct sk_buff *oskb, struct net_device *dev) { struct vxcan_priv *priv = netdev_priv(dev); struct net_device *peer; - struct canfd_frame *cfd = (struct canfd_frame *)oskb->data; struct net_device_stats *peerstats, *srcstats = &dev->stats; struct sk_buff *skb; - u8 len; + unsigned int len; if (can_dropped_invalid_skb(dev, oskb)) return NETDEV_TX_OK; @@ -70,7 +69,7 @@ static netdev_tx_t vxcan_xmit(struct sk_buff *oskb, struct net_device *dev) skb->dev = peer; skb->ip_summed = CHECKSUM_UNNECESSARY; - len = cfd->can_id & CAN_RTR_FLAG ? 0 : cfd->len; + len = can_skb_get_data_len(skb); if (netif_rx(skb) == NET_RX_SUCCESS) { srcstats->tx_packets++; srcstats->tx_bytes += len; @@ -132,7 +131,8 @@ static int vxcan_change_mtu(struct net_device *dev, int new_mtu) if (dev->flags & IFF_UP) return -EBUSY; - if (new_mtu != CAN_MTU && new_mtu != CANFD_MTU) + if (new_mtu != CAN_MTU && new_mtu != CANFD_MTU && + !can_is_canxl_dev_mtu(new_mtu)) return -EINVAL; dev->mtu = new_mtu; |