diff options
Diffstat (limited to 'net/mac802154/driver-ops.h')
| -rw-r--r-- | net/mac802154/driver-ops.h | 354 |
1 files changed, 354 insertions, 0 deletions
diff --git a/net/mac802154/driver-ops.h b/net/mac802154/driver-ops.h new file mode 100644 index 000000000..a7af3f0dd --- /dev/null +++ b/net/mac802154/driver-ops.h @@ -0,0 +1,354 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __MAC802154_DRIVER_OPS +#define __MAC802154_DRIVER_OPS + +#include <linux/types.h> +#include <linux/rtnetlink.h> + +#include <net/mac802154.h> + +#include "ieee802154_i.h" +#include "trace.h" + +static inline int +drv_xmit_async(struct ieee802154_local *local, struct sk_buff *skb) +{ + return local->ops->xmit_async(&local->hw, skb); +} + +static inline int +drv_xmit_sync(struct ieee802154_local *local, struct sk_buff *skb) +{ + might_sleep(); + + return local->ops->xmit_sync(&local->hw, skb); +} + +static inline int drv_set_pan_id(struct ieee802154_local *local, __le16 pan_id) +{ + struct ieee802154_hw_addr_filt filt; + int ret; + + might_sleep(); + + if (!local->ops->set_hw_addr_filt) { + WARN_ON(1); + return -EOPNOTSUPP; + } + + filt.pan_id = pan_id; + + trace_802154_drv_set_pan_id(local, pan_id); + ret = local->ops->set_hw_addr_filt(&local->hw, &filt, + IEEE802154_AFILT_PANID_CHANGED); + trace_802154_drv_return_int(local, ret); + return ret; +} + +static inline int +drv_set_extended_addr(struct ieee802154_local *local, __le64 extended_addr) +{ + struct ieee802154_hw_addr_filt filt; + int ret; + + might_sleep(); + + if (!local->ops->set_hw_addr_filt) { + WARN_ON(1); + return -EOPNOTSUPP; + } + + filt.ieee_addr = extended_addr; + + trace_802154_drv_set_extended_addr(local, extended_addr); + ret = local->ops->set_hw_addr_filt(&local->hw, &filt, + IEEE802154_AFILT_IEEEADDR_CHANGED); + trace_802154_drv_return_int(local, ret); + return ret; +} + +static inline int +drv_set_short_addr(struct ieee802154_local *local, __le16 short_addr) +{ + struct ieee802154_hw_addr_filt filt; + int ret; + + might_sleep(); + + if (!local->ops->set_hw_addr_filt) { + WARN_ON(1); + return -EOPNOTSUPP; + } + + filt.short_addr = short_addr; + + trace_802154_drv_set_short_addr(local, short_addr); + ret = local->ops->set_hw_addr_filt(&local->hw, &filt, + IEEE802154_AFILT_SADDR_CHANGED); + trace_802154_drv_return_int(local, ret); + return ret; +} + +static inline int +drv_set_pan_coord(struct ieee802154_local *local, bool is_coord) +{ + struct ieee802154_hw_addr_filt filt; + int ret; + + might_sleep(); + + if (!local->ops->set_hw_addr_filt) { + WARN_ON(1); + return -EOPNOTSUPP; + } + + filt.pan_coord = is_coord; + + trace_802154_drv_set_pan_coord(local, is_coord); + ret = local->ops->set_hw_addr_filt(&local->hw, &filt, + IEEE802154_AFILT_PANC_CHANGED); + trace_802154_drv_return_int(local, ret); + return ret; +} + +static inline int +drv_set_promiscuous_mode(struct ieee802154_local *local, bool on) +{ + int ret; + + might_sleep(); + + if (!local->ops->set_promiscuous_mode) { + WARN_ON(1); + return -EOPNOTSUPP; + } + + trace_802154_drv_set_promiscuous_mode(local, on); + ret = local->ops->set_promiscuous_mode(&local->hw, on); + trace_802154_drv_return_int(local, ret); + return ret; +} + +static inline int drv_start(struct ieee802154_local *local, + enum ieee802154_filtering_level level, + const struct ieee802154_hw_addr_filt *addr_filt) +{ + int ret; + + might_sleep(); + + /* setup receive mode parameters e.g. address mode */ + if (local->hw.flags & IEEE802154_HW_AFILT) { + ret = drv_set_pan_id(local, addr_filt->pan_id); + if (ret < 0) + return ret; + + ret = drv_set_short_addr(local, addr_filt->short_addr); + if (ret < 0) + return ret; + + ret = drv_set_extended_addr(local, addr_filt->ieee_addr); + if (ret < 0) + return ret; + } + + switch (level) { + case IEEE802154_FILTERING_NONE: + fallthrough; + case IEEE802154_FILTERING_1_FCS: + fallthrough; + case IEEE802154_FILTERING_2_PROMISCUOUS: + /* TODO: Requires a different receive mode setup e.g. + * at86rf233 hardware. + */ + fallthrough; + case IEEE802154_FILTERING_3_SCAN: + if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) { + ret = drv_set_promiscuous_mode(local, true); + if (ret < 0) + return ret; + } else { + return -EOPNOTSUPP; + } + + /* In practice other filtering levels can be requested, but as + * for now most hardware/drivers only support + * IEEE802154_FILTERING_NONE, we fallback to this actual + * filtering level in hardware and make our own additional + * filtering in mac802154 receive path. + * + * TODO: Move this logic to the device drivers as hardware may + * support more higher level filters. Hardware may also require + * a different order how register are set, which could currently + * be buggy, so all received parameters need to be moved to the + * start() callback and let the driver go into the mode before + * it will turn on receive handling. + */ + local->phy->filtering = IEEE802154_FILTERING_NONE; + break; + case IEEE802154_FILTERING_4_FRAME_FIELDS: + /* Do not error out if IEEE802154_HW_PROMISCUOUS because we + * expect the hardware to operate at the level + * IEEE802154_FILTERING_4_FRAME_FIELDS anyway. + */ + if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) { + ret = drv_set_promiscuous_mode(local, false); + if (ret < 0) + return ret; + } + + local->phy->filtering = IEEE802154_FILTERING_4_FRAME_FIELDS; + break; + default: + WARN_ON(1); + return -EINVAL; + } + + trace_802154_drv_start(local); + local->started = true; + smp_mb(); + ret = local->ops->start(&local->hw); + trace_802154_drv_return_int(local, ret); + return ret; +} + +static inline void drv_stop(struct ieee802154_local *local) +{ + might_sleep(); + + trace_802154_drv_stop(local); + local->ops->stop(&local->hw); + trace_802154_drv_return_void(local); + + /* sync away all work on the tasklet before clearing started */ + tasklet_disable(&local->tasklet); + tasklet_enable(&local->tasklet); + + barrier(); + + local->started = false; +} + +static inline int +drv_set_channel(struct ieee802154_local *local, u8 page, u8 channel) +{ + int ret; + + might_sleep(); + + trace_802154_drv_set_channel(local, page, channel); + ret = local->ops->set_channel(&local->hw, page, channel); + trace_802154_drv_return_int(local, ret); + return ret; +} + +static inline int drv_set_tx_power(struct ieee802154_local *local, s32 mbm) +{ + int ret; + + might_sleep(); + + if (!local->ops->set_txpower) { + WARN_ON(1); + return -EOPNOTSUPP; + } + + trace_802154_drv_set_tx_power(local, mbm); + ret = local->ops->set_txpower(&local->hw, mbm); + trace_802154_drv_return_int(local, ret); + return ret; +} + +static inline int drv_set_cca_mode(struct ieee802154_local *local, + const struct wpan_phy_cca *cca) +{ + int ret; + + might_sleep(); + + if (!local->ops->set_cca_mode) { + WARN_ON(1); + return -EOPNOTSUPP; + } + + trace_802154_drv_set_cca_mode(local, cca); + ret = local->ops->set_cca_mode(&local->hw, cca); + trace_802154_drv_return_int(local, ret); + return ret; +} + +static inline int drv_set_lbt_mode(struct ieee802154_local *local, bool mode) +{ + int ret; + + might_sleep(); + + if (!local->ops->set_lbt) { + WARN_ON(1); + return -EOPNOTSUPP; + } + + trace_802154_drv_set_lbt_mode(local, mode); + ret = local->ops->set_lbt(&local->hw, mode); + trace_802154_drv_return_int(local, ret); + return ret; +} + +static inline int +drv_set_cca_ed_level(struct ieee802154_local *local, s32 mbm) +{ + int ret; + + might_sleep(); + + if (!local->ops->set_cca_ed_level) { + WARN_ON(1); + return -EOPNOTSUPP; + } + + trace_802154_drv_set_cca_ed_level(local, mbm); + ret = local->ops->set_cca_ed_level(&local->hw, mbm); + trace_802154_drv_return_int(local, ret); + return ret; +} + +static inline int +drv_set_csma_params(struct ieee802154_local *local, u8 min_be, u8 max_be, + u8 max_csma_backoffs) +{ + int ret; + + might_sleep(); + + if (!local->ops->set_csma_params) { + WARN_ON(1); + return -EOPNOTSUPP; + } + + trace_802154_drv_set_csma_params(local, min_be, max_be, + max_csma_backoffs); + ret = local->ops->set_csma_params(&local->hw, min_be, max_be, + max_csma_backoffs); + trace_802154_drv_return_int(local, ret); + return ret; +} + +static inline int +drv_set_max_frame_retries(struct ieee802154_local *local, s8 max_frame_retries) +{ + int ret; + + might_sleep(); + + if (!local->ops->set_frame_retries) { + WARN_ON(1); + return -EOPNOTSUPP; + } + + trace_802154_drv_set_max_frame_retries(local, max_frame_retries); + ret = local->ops->set_frame_retries(&local->hw, max_frame_retries); + trace_802154_drv_return_int(local, ret); + return ret; +} + +#endif /* __MAC802154_DRIVER_OPS */ |