diff options
Diffstat (limited to 'drivers/net')
31 files changed, 9949 insertions, 9 deletions
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index 9a18270c108..97ea7c60e00 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -2614,6 +2614,8 @@ source "drivers/net/tokenring/Kconfig" source "drivers/net/wireless/Kconfig" +source "drivers/net/wimax/Kconfig" + source "drivers/net/usb/Kconfig" source "drivers/net/pcmcia/Kconfig" diff --git a/drivers/net/Makefile b/drivers/net/Makefile index e5c34b46421..a3c5c002f22 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -263,3 +263,4 @@ obj-$(CONFIG_NIU) += niu.o obj-$(CONFIG_VIRTIO_NET) += virtio_net.o obj-$(CONFIG_SFC) += sfc/ +obj-$(CONFIG_WIMAX) += wimax/ diff --git a/drivers/net/usb/kaweth.c b/drivers/net/usb/kaweth.c index 2ee034f70d1..3073ca25a0b 100644 --- a/drivers/net/usb/kaweth.c +++ b/drivers/net/usb/kaweth.c @@ -283,9 +283,9 @@ static int kaweth_control(struct kaweth_device *kaweth, dr->bRequestType= requesttype; dr->bRequest = request; - dr->wValue = cpu_to_le16p(&value); - dr->wIndex = cpu_to_le16p(&index); - dr->wLength = cpu_to_le16p(&size); + dr->wValue = cpu_to_le16(value); + dr->wIndex = cpu_to_le16(index); + dr->wLength = cpu_to_le16(size); return kaweth_internal_control_msg(kaweth->dev, pipe, diff --git a/drivers/net/usb/pegasus.c b/drivers/net/usb/pegasus.c index 166880c113d..d9241f1c080 100644 --- a/drivers/net/usb/pegasus.c +++ b/drivers/net/usb/pegasus.c @@ -150,8 +150,8 @@ static int get_registers(pegasus_t * pegasus, __u16 indx, __u16 size, pegasus->dr.bRequestType = PEGASUS_REQT_READ; pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS; pegasus->dr.wValue = cpu_to_le16(0); - pegasus->dr.wIndex = cpu_to_le16p(&indx); - pegasus->dr.wLength = cpu_to_le16p(&size); + pegasus->dr.wIndex = cpu_to_le16(indx); + pegasus->dr.wLength = cpu_to_le16(size); pegasus->ctrl_urb->transfer_buffer_length = size; usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, @@ -208,8 +208,8 @@ static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size, pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS; pegasus->dr.wValue = cpu_to_le16(0); - pegasus->dr.wIndex = cpu_to_le16p(&indx); - pegasus->dr.wLength = cpu_to_le16p(&size); + pegasus->dr.wIndex = cpu_to_le16(indx); + pegasus->dr.wLength = cpu_to_le16(size); pegasus->ctrl_urb->transfer_buffer_length = size; usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb, @@ -261,7 +261,7 @@ static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data) pegasus->dr.bRequestType = PEGASUS_REQT_WRITE; pegasus->dr.bRequest = PEGASUS_REQ_SET_REG; pegasus->dr.wValue = cpu_to_le16(data); - pegasus->dr.wIndex = cpu_to_le16p(&indx); + pegasus->dr.wIndex = cpu_to_le16(indx); pegasus->dr.wLength = cpu_to_le16(1); pegasus->ctrl_urb->transfer_buffer_length = 1; @@ -476,7 +476,7 @@ static inline void get_node_id(pegasus_t * pegasus, __u8 * id) for (i = 0; i < 3; i++) { read_eprom_word(pegasus, i, &w16); - ((__le16 *) id)[i] = cpu_to_le16p(&w16); + ((__le16 *) id)[i] = cpu_to_le16(w16); } } diff --git a/drivers/net/wimax/Kconfig b/drivers/net/wimax/Kconfig new file mode 100644 index 00000000000..565018ec1e3 --- /dev/null +++ b/drivers/net/wimax/Kconfig @@ -0,0 +1,17 @@ +# +# WiMAX LAN device drivers configuration +# + + +comment "Enable WiMAX (Networking options) to see the WiMAX drivers" + depends on WIMAX = n + +if WIMAX + +menu "WiMAX Wireless Broadband devices" + +source "drivers/net/wimax/i2400m/Kconfig" + +endmenu + +endif diff --git a/drivers/net/wimax/Makefile b/drivers/net/wimax/Makefile new file mode 100644 index 00000000000..992bc02bc01 --- /dev/null +++ b/drivers/net/wimax/Makefile @@ -0,0 +1,5 @@ + +obj-$(CONFIG_WIMAX_I2400M) += i2400m/ + +# (from Sam Ravnborg) force kbuild to create built-in.o +obj- := dummy.o diff --git a/drivers/net/wimax/i2400m/Kconfig b/drivers/net/wimax/i2400m/Kconfig new file mode 100644 index 00000000000..d623b3d99a4 --- /dev/null +++ b/drivers/net/wimax/i2400m/Kconfig @@ -0,0 +1,49 @@ + +config WIMAX_I2400M + tristate + depends on WIMAX + select FW_LOADER + +comment "Enable USB support to see WiMAX USB drivers" + depends on USB = n + +comment "Enable MMC support to see WiMAX SDIO drivers" + depends on MMC = n + +config WIMAX_I2400M_USB + tristate "Intel Wireless WiMAX Connection 2400 over USB (including 5x50)" + depends on WIMAX && USB + select WIMAX_I2400M + help + Select if you have a device based on the Intel WiMAX + Connection 2400 over USB (like any of the Intel Wireless + WiMAX/WiFi Link 5x50 series). + + If unsure, it is safe to select M (module). + +config WIMAX_I2400M_SDIO + tristate "Intel Wireless WiMAX Connection 2400 over SDIO" + depends on WIMAX && MMC + select WIMAX_I2400M + help + Select if you have a device based on the Intel WiMAX + Connection 2400 over SDIO. + + If unsure, it is safe to select M (module). + +config WIMAX_I2400M_DEBUG_LEVEL + int "WiMAX i2400m debug level" + depends on WIMAX_I2400M + default 8 + help + + Select the maximum debug verbosity level to be compiled into + the WiMAX i2400m driver code. + + By default, this is disabled at runtime and can be + selectively enabled at runtime for different parts of the + code using the sysfs debug-levels file. + + If set at zero, this will compile out all the debug code. + + It is recommended that it is left at 8. diff --git a/drivers/net/wimax/i2400m/Makefile b/drivers/net/wimax/i2400m/Makefile new file mode 100644 index 00000000000..1696e936cf5 --- /dev/null +++ b/drivers/net/wimax/i2400m/Makefile @@ -0,0 +1,29 @@ + +obj-$(CONFIG_WIMAX_I2400M) += i2400m.o +obj-$(CONFIG_WIMAX_I2400M_USB) += i2400m-usb.o +obj-$(CONFIG_WIMAX_I2400M_SDIO) += i2400m-sdio.o + +i2400m-y := \ + control.o \ + driver.o \ + fw.o \ + op-rfkill.o \ + netdev.o \ + tx.o \ + rx.o + +i2400m-$(CONFIG_DEBUG_FS) += debugfs.o + +i2400m-usb-y := \ + usb-fw.o \ + usb-notif.o \ + usb-tx.o \ + usb-rx.o \ + usb.o + + +i2400m-sdio-y := \ + sdio.o \ + sdio-tx.o \ + sdio-fw.o \ + sdio-rx.o diff --git a/drivers/net/wimax/i2400m/control.c b/drivers/net/wimax/i2400m/control.c new file mode 100644 index 00000000000..d3d37fed689 --- /dev/null +++ b/drivers/net/wimax/i2400m/control.c @@ -0,0 +1,1291 @@ +/* + * Intel Wireless WiMAX Connection 2400m + * Miscellaneous control functions for managing the device + * + * + * Copyright (C) 2007-2008 Intel Corporation. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * + * Intel Corporation <linux-wimax@intel.com> + * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com> + * - Initial implementation + * + * This is a collection of functions used to control the device (plus + * a few helpers). + * + * There are utilities for handling TLV buffers, hooks on the device's + * reports to act on device changes of state [i2400m_report_hook()], + * on acks to commands [i2400m_msg_ack_hook()], a helper for sending + * commands to the device and blocking until a reply arrives + * [i2400m_msg_to_dev()], a few high level commands for manipulating + * the device state, powersving mode and configuration plus the + * routines to setup the device once communication is stablished with + * it [i2400m_dev_initialize()]. + * + * ROADMAP + * + * i2400m_dev_initalize() Called by i2400m_dev_start() + * i2400m_set_init_config() + * i2400m_firmware_check() + * i2400m_cmd_get_state() + * i2400m_dev_shutdown() Called by i2400m_dev_stop() + * i2400m->bus_reset() + * + * i2400m_{cmd,get,set}_*() + * i2400m_msg_to_dev() + * i2400m_msg_check_status() + * + * i2400m_report_hook() Called on reception of an event + * i2400m_report_state_hook() + * i2400m_tlv_buffer_walk() + * i2400m_tlv_match() + * i2400m_report_tlv_system_state() + * i2400m_report_tlv_rf_switches_status() + * i2400m_report_tlv_media_status() + * i2400m_cmd_enter_powersave() + * + * i2400m_msg_ack_hook() Called on reception of a reply to a + * command, get or set + */ + +#include <stdarg.h> +#include "i2400m.h" +#include <linux/kernel.h> +#include <linux/wimax/i2400m.h> + + +#define D_SUBMODULE control +#include "debug-levels.h" + + +/* + * Return if a TLV is of a give type and size + * + * @tlv_hdr: pointer to the TLV + * @tlv_type: type of the TLV we are looking for + * @tlv_size: expected size of the TLV we are looking for (if -1, + * don't check the size). This includes the header + * Returns: 0 if the TLV matches + * < 0 if it doesn't match at all + * > 0 total TLV + payload size, if the type matches, but not + * the size + */ +static +ssize_t i2400m_tlv_match(const struct i2400m_tlv_hdr *tlv, + enum i2400m_tlv tlv_type, ssize_t tlv_size) +{ + if (le16_to_cpu(tlv->type) != tlv_type) /* Not our type? skip */ + return -1; + if (tlv_size != -1 + && le16_to_cpu(tlv->length) + sizeof(*tlv) != tlv_size) { + size_t size = le16_to_cpu(tlv->length) + sizeof(*tlv); + printk(KERN_WARNING "W: tlv type 0x%x mismatched because of " + "size (got %zu vs %zu expected)\n", + tlv_type, size, tlv_size); + return size; + } + return 0; +} + + +/* + * Given a buffer of TLVs, iterate over them + * + * @i2400m: device instance + * @tlv_buf: pointer to the beginning of the TLV buffer + * @buf_size: buffer size in bytes + * @tlv_pos: seek position; this is assumed to be a pointer returned + * by i2400m_tlv_buffer_walk() [and thus, validated]. The + * TLV returned will be the one following this one. + * + * Usage: + * + * tlv_itr = NULL; + * while (tlv_itr = i2400m_tlv_buffer_walk(i2400m, buf, size, tlv_itr)) { + * ... + * // Do stuff with tlv_itr, DON'T MODIFY IT + * ... + * } + */ +static +const struct i2400m_tlv_hdr *i2400m_tlv_buffer_walk( + struct i2400m *i2400m, + const void *tlv_buf, size_t buf_size, + const struct i2400m_tlv_hdr *tlv_pos) +{ + struct device *dev = i2400m_dev(i2400m); + const struct i2400m_tlv_hdr *tlv_top = tlv_buf + buf_size; + size_t offset, length, avail_size; + unsigned type; + + if (tlv_pos == NULL) /* Take the first one? */ + tlv_pos = tlv_buf; + else /* Nope, the next one */ + tlv_pos = (void *) tlv_pos + + le16_to_cpu(tlv_pos->length) + sizeof(*tlv_pos); + if (tlv_pos == tlv_top) { /* buffer done */ + tlv_pos = NULL; + goto error_beyond_end; + } + if (tlv_pos > tlv_top) { + tlv_pos = NULL; + WARN_ON(1); + goto error_beyond_end; + } + offset = (void *) tlv_pos - (void *) tlv_buf; + avail_size = buf_size - offset; + if (avail_size < sizeof(*tlv_pos)) { + dev_err(dev, "HW BUG? tlv_buf %p [%zu bytes], tlv @%zu: " + "short header\n", tlv_buf, buf_size, offset); + goto error_short_header; + } + type = le16_to_cpu(tlv_pos->type); + length = le16_to_cpu(tlv_pos->length); + if (avail_size < sizeof(*tlv_pos) + length) { + dev_err(dev, "HW BUG? tlv_buf %p [%zu bytes], " + "tlv type 0x%04x @%zu: " + "short data (%zu bytes vs %zu needed)\n", + tlv_buf, buf_size, type, offset, avail_size, + sizeof(*tlv_pos) + length); + goto error_short_header; + } +error_short_header: +error_beyond_end: + return tlv_pos; +} + + +/* + * Find a TLV in a buffer of sequential TLVs + * + * @i2400m: device descriptor + * @tlv_hdr: pointer to the first TLV in the sequence + * @size: size of the buffer in bytes; all TLVs are assumed to fit + * fully in the buffer (otherwise we'll complain). + * @tlv_type: type of the TLV we are looking for + * @tlv_size: expected size of the TLV we are looking for (if -1, + * don't check the size). This includes the header + * + * Returns: NULL if the TLV is not found, otherwise a pointer to + * it. If the sizes don't match, an error is printed and NULL + * returned. + */ +static +const struct i2400m_tlv_hdr *i2400m_tlv_find( + struct i2400m *i2400m, + const struct i2400m_tlv_hdr *tlv_hdr, size_t size, + enum i2400m_tlv tlv_type, ssize_t tlv_size) +{ + ssize_t match; + struct device *dev = i2400m_dev(i2400m); + const struct i2400m_tlv_hdr *tlv = NULL; + while ((tlv = i2400m_tlv_buffer_walk(i2400m, tlv_hdr, size, tlv))) { + match = i2400m_tlv_match(tlv, tlv_type, tlv_size); + if (match == 0) /* found it :) */ + break; + if (match > 0) + dev_warn(dev, "TLV type 0x%04x found with size " + "mismatch (%zu vs %zu needed)\n", + tlv_type, match, tlv_size); + } + return tlv; +} + + +static const struct +{ + char *msg; + int errno; +} ms_to_errno[I2400M_MS_MAX] = { + [I2400M_MS_DONE_OK] = { "", 0 }, + [I2400M_MS_DONE_IN_PROGRESS] = { "", 0 }, + [I2400M_MS_INVALID_OP] = { "invalid opcode", -ENOSYS }, + [I2400M_MS_BAD_STATE] = { "invalid state", -EILSEQ }, + [I2400M_MS_ILLEGAL_VALUE] = { "illegal value", -EINVAL }, + [I2400M_MS_MISSING_PARAMS] = { "missing parameters", -ENOMSG }, + [I2400M_MS_VERSION_ERROR] = { "bad version", -EIO }, + [I2400M_MS_ACCESSIBILITY_ERROR] = { "accesibility error", -EIO }, + [I2400M_MS_BUSY] = { "busy", -EBUSY }, + [I2400M_MS_CORRUPTED_TLV] = { "corrupted TLV", -EILSEQ }, + [I2400M_MS_UNINITIALIZED] = { "not unitialized", -EILSEQ }, + [I2400M_MS_UNKNOWN_ERROR] = { "unknown error", -EIO }, + [I2400M_MS_PRODUCTION_ERROR] = { "production error", -EIO }, + [I2400M_MS_NO_RF] = { "no RF", -EIO }, + [I2400M_MS_NOT_READY_FOR_POWERSAVE] = + { "not ready for powersave", -EACCES }, + [I2400M_MS_THERMAL_CRITICAL] = { "thermal critical", -EL3HLT }, +}; + + +/* + * i2400m_msg_check_status - translate a message's status code + * + * @i2400m: device descriptor + * @l3l4_hdr: message header + * @strbuf: buffer to place a formatted error message (unless NULL). + * @strbuf_size: max amount of available space; larger messages will + * be truncated. + * + * Returns: errno code corresponding to the status code in @l3l4_hdr + * and a message in @strbuf describing the error. + */ +int i2400m_msg_check_status(const struct i2400m_l3l4_hdr *l3l4_hdr, + char *strbuf, size_t strbuf_size) +{ + int result; + enum i2400m_ms status = le16_to_cpu(l3l4_hdr->status); + const char *str; + + if (status == 0) + return 0; + if (status > ARRAY_SIZE(ms_to_errno)) { + str = "unknown status code"; + result = -EBADR; + } else { + str = ms_to_errno[status].msg; + result = ms_to_errno[status].errno; + } + if (strbuf) + snprintf(strbuf, strbuf_size, "%s (%d)", str, status); + return result; +} + + +/* + * Act on a TLV System State reported by the device + * + * @i2400m: device descriptor + * @ss: validated System State TLV + */ +static +void i2400m_report_tlv_system_state(struct i2400m *i2400m, + const struct i2400m_tlv_system_state *ss) +{ + struct device *dev = i2400m_dev(i2400m); + struct wimax_dev *wimax_dev = &i2400m->wimax_dev; + enum i2400m_system_state i2400m_state = le32_to_cpu(ss->state); + + d_fnstart(3, dev, "(i2400m %p ss %p [%u])\n", i2400m, ss, i2400m_state); + + if (unlikely(i2400m->ready == 0)) /* act if up */ + goto out; + if (i2400m->state != i2400m_state) { + i2400m->state = i2400m_state; + wake_up_all(&i2400m->state_wq); + } + switch (i2400m_state) { + case I2400M_SS_UNINITIALIZED: + case I2400M_SS_INIT: + case I2400M_SS_CONFIG: + case I2400M_SS_PRODUCTION: + wimax_state_change(wimax_dev, WIMAX_ST_UNINITIALIZED); + break; + + case I2400M_SS_RF_OFF: + case I2400M_SS_RF_SHUTDOWN: + wimax_state_change(wimax_dev, WIMAX_ST_RADIO_OFF); + break; + + case I2400M_SS_READY: + case I2400M_SS_STANDBY: + case I2400M_SS_SLEEPACTIVE: + wimax_state_change(wimax_dev, WIMAX_ST_READY); + break; + + case I2400M_SS_CONNECTING: + case I2400M_SS_WIMAX_CONNECTED: + wimax_state_change(wimax_dev, WIMAX_ST_READY); + break; + + case I2400M_SS_SCAN: + case I2400M_SS_OUT_OF_ZONE: + wimax_state_change(wimax_dev, WIMAX_ST_SCANNING); + break; + + case I2400M_SS_IDLE: + d_printf(1, dev, "entering BS-negotiated idle mode\n"); + case I2400M_SS_DISCONNECTING: + case I2400M_SS_DATA_PATH_CONNECTED: + wimax_state_change(wimax_dev, WIMAX_ST_CONNECTED); + break; + + default: + /* Huh? just in case, shut it down */ + dev_err(dev, "HW BUG? unknown state %u: shutting down\n", + i2400m_state); + i2400m->bus_reset(i2400m, I2400M_RT_WARM); + break; + }; +out: + d_fnend(3, dev, "(i2400m %p ss %p [%u]) = void\n", + i2400m, ss, i2400m_state); +} + + +/* + * Parse and act on a TLV Media Status sent by the device + * + * @i2400m: device descriptor + * @ms: validated Media Status TLV + * + * This will set the carrier up on down based on the device's link + * report. This is done asides of what the WiMAX stack does based on + * the device's state as sometimes we need to do a link-renew (the BS + * wants us to renew a DHCP lease, for example). + * + * In fact, doc says that everytime we get a link-up, we should do a + * DHCP negotiation... + */ +static +void i2400m_report_tlv_media_status(struct i2400m *i2400m, + const struct i2400m_tlv_media_status *ms) +{ + struct device *dev = i2400m_dev(i2400m); + struct wimax_dev *wimax_dev = &i2400m->wimax_dev; + struct net_device *net_dev = wimax_dev->net_dev; + enum i2400m_media_status status = le32_to_cpu(ms->media_status); + + d_fnstart(3, dev, "(i2400m %p ms %p [%u])\n", i2400m, ms, status); + + if (unlikely(i2400m->ready == 0)) /* act if up */ + goto out; + switch (status) { + case I2400M_MEDIA_STATUS_LINK_UP: + netif_carrier_on(net_dev); + break; + case I2400M_MEDIA_STATUS_LINK_DOWN: + netif_carrier_off(net_dev); + break; + /* + * This is the network telling us we need to retrain the DHCP + * lease -- so far, we are trusting the WiMAX Network Service + * in user space to pick this up and poke the DHCP client. + */ + case I2400M_MEDIA_STATUS_LINK_RENEW: + netif_carrier_on(net_dev); + break; + default: + dev_err(dev, "HW BUG? unknown media status %u\n", + status); + }; +out: + d_fnend(3, dev, "(i2400m %p ms %p [%u]) = void\n", + i2400m, ms, status); +} + + +/* + * Parse a 'state report' and extract carrier on/off information + * + * @i2400m: device descriptor + * @l3l4_hdr: pointer to message; it has been already validated for + * consistent size. + * @size: size of the message (header + payload). The header length + * declaration is assumed to be congruent with @size (as in + * sizeof(*l3l4_hdr) + l3l4_hdr->length == size) + * + * Extract from the report state the system state TLV and infer from + * there if we have a carrier or not. Update our local state and tell + * netdev. + * + * When setting the carrier, it's fine to set OFF twice (for example), + * as netif_carrier_off() will not generate two OFF events (just on + * the transitions). + */ +static +void i2400m_report_state_hook(struct i2400m *i2400m, + const struct i2400m_l3l4_hdr *l3l4_hdr, + size_t size, const char *tag) +{ + struct device *dev = i2400m_dev(i2400m); + const struct i2400m_tlv_hdr *tlv; + const struct i2400m_tlv_system_state *ss; + const struct i2400m_tlv_rf_switches_status *rfss; + const struct i2400m_tlv_media_status *ms; + size_t tlv_size = le16_to_cpu(l3l4_hdr->length); + + d_fnstart(4, dev, "(i2400m %p, l3l4_hdr %p, size %zu, %s)\n", + i2400m, l3l4_hdr, size, tag); + tlv = NULL; + + while ((tlv = i2400m_tlv_buffer_walk(i2400m, &l3l4_hdr->pl, + tlv_size, tlv))) { + if (0 == i2400m_tlv_match(tlv, I2400M_TLV_SYSTEM_STATE, + sizeof(*ss))) { + ss = container_of(tlv, typeof(*ss), hdr); + d_printf(2, dev, "%s: system state TLV " + "found (0x%04x), state 0x%08x\n", + tag, I2400M_TLV_SYSTEM_STATE, + le32_to_cpu(ss->state)); + i2400m_report_tlv_system_state(i2400m, ss); + } + if (0 == i2400m_tlv_match(tlv, I2400M_TLV_RF_STATUS, + sizeof(*rfss))) { + rfss = container_of(tlv, typeof(*rfss), hdr); + d_printf(2, dev, "%s: RF status TLV " + "found (0x%04x), sw 0x%02x hw 0x%02x\n", + tag, I2400M_TLV_RF_STATUS, + le32_to_cpu(rfss->sw_rf_switch), + le32_to_cpu(rfss->hw_rf_switch)); + i2400m_report_tlv_rf_switches_status(i2400m, rfss); + } + if (0 == i2400m_tlv_match(tlv, I2400M_TLV_MEDIA_STATUS, + sizeof(*ms))) { + ms = container_of(tlv, typeof(*ms), hdr); + d_printf(2, dev, "%s: Media Status TLV: %u\n", + tag, le32_to_cpu(ms->media_status)); + i2400m_report_tlv_media_status(i2400m, ms); + } + } + d_fnend(4, dev, "(i2400m %p, l3l4_hdr %p, size %zu, %s) = void\n", + i2400m, l3l4_hdr, size, tag); +} + + +/* + * i2400m_report_hook - (maybe) act on a report + * + * @i2400m: device descriptor + * @l3l4_hdr: pointer to message; it has been already validated for + * consistent size. + * @size: size of the message (header + payload). The header length + * declaration is assumed to be congruent with @size (as in + * sizeof(*l3l4_hdr) + l3l4_hdr->length == size) + * + * Extract information we might need (like carrien on/off) from a + * device report. + */ +void i2400m_report_hook(struct i2400m *i2400m, + const struct i2400m_l3l4_hdr *l3l4_hdr, size_t size) +{ + struct device *dev = i2400m_dev(i2400m); + unsigned msg_type; + + d_fnstart(3, dev, "(i2400m %p l3l4_hdr %p size %zu)\n", + i2400m, l3l4_hdr, size); + /* Chew on the message, we might need some information from + * here */ + msg_type = le16_to_cpu(l3l4_hdr->type); + switch (msg_type) { + case I2400M_MT_REPORT_STATE: /* carrier detection... */ + i2400m_report_state_hook(i2400m, + l3l4_hdr, size, "REPORT STATE"); + break; + /* If the device is ready for power save, then ask it to do + * it. */ + case I2400M_MT_REPORT_POWERSAVE_READY: /* zzzzz */ + if (l3l4_hdr->status == cpu_to_le16(I2400M_MS_DONE_OK)) { + d_printf(1, dev, "ready for powersave, requesting\n"); + i2400m_cmd_enter_powersave(i2400m); + } + break; + }; + d_fnend(3, dev, "(i2400m %p l3l4_hdr %p size %zu) = void\n", + i2400m, l3l4_hdr, size); +} + + +/* + * i2400m_msg_ack_hook - process cmd/set/get ack for internal status + * + * @i2400m: device descriptor + * @l3l4_hdr: pointer to message; it has been already validated for + * consistent size. + * @size: size of the message + * + * Extract information we might need from acks to commands and act on + * it. This is akin to i2400m_report_hook(). Note most of this + * processing should be done in the function that calls the + * command. This is here for some cases where it can't happen... + */ +void i2400m_msg_ack_hook(struct i2400m *i2400m, + const struct i2400m_l3l4_hdr *l3l4_hdr, size_t size) +{ + int result; + struct device *dev = i2400m_dev(i2400m); + unsigned ack_type, ack_status; + char strerr[32]; + + /* Chew on the message, we might need some information from + * here */ + ack_type = le16_to_cpu(l3l4_hdr->type); + ack_status = le16_to_cpu(l3l4_hdr->status); + switch (ack_type) { + case I2400M_MT_CMD_ENTER_POWERSAVE: + /* This is just left here for the sake of example, as + * the processing is done somewhere else. */ + if (0) { + result = i2400m_msg_check_status( + l3l4_hdr, strerr, sizeof(strerr)); + if (result >= 0) + d_printf(1, dev, "ready for power save: %zd\n", + size); + } + break; + }; + return; +} + + +/* + * i2400m_msg_size_check() - verify message size and header are congruent + * + * It is ok if the total message size is larger than the expected + * size, as there can be padding. + */ +int i2400m_msg_size_check(struct i2400m *i2400m, + const struct i2400m_l3l4_hdr *l3l4_hdr, + size_t msg_size) +{ + int result; + struct device *dev = i2400m_dev(i2400m); + size_t expected_size; + d_fnstart(4, dev, "(i2400m %p l3l4_hdr %p msg_size %zu)\n", + i2400m, l3l4_hdr, msg_size); + if (msg_size < sizeof(*l3l4_hdr)) { + dev_err(dev, "bad size for message header " + "(expected at least %zu, got %zu)\n", + (size_t) sizeof(*l3l4_hdr), msg_size); + result = -EIO; + goto error_hdr_size; + } + expected_size = le16_to_cpu(l3l4_hdr->length) + sizeof(*l3l4_hdr); + if (msg_size < expected_size) { + dev_err(dev, "bad size for message code 0x%04x (expected %zu, " + "got %zu)\n", le16_to_cpu(l3l4_hdr->type), + expected_size, msg_size); + result = -EIO; + } else + result = 0; +error_hdr_size: + d_fnend(4, dev, + "(i2400m %p l3l4_hdr %p msg_size %zu) = %d\n", + i2400m, l3l4_hdr, msg_size, result); + return result; +} + + + +/* + * Cancel a wait for a command ACK + * + * @i2400m: device descriptor + * @code: [negative] errno code to cancel with (don't use + * -EINPROGRESS) + * + * If there is an ack already filled out, free it. + */ +void i2400m_msg_to_dev_cancel_wait(struct i2400m *i2400m, int code) +{ + struct sk_buff *ack_skb; + unsigned long flags; + + spin_lock_irqsave(&i2400m->rx_lock, flags); + ack_skb = i2400m->ack_skb; + if (ack_skb && !IS_ERR(ack_skb)) + kfree(ack_skb); + i2400m->ack_skb = ERR_PTR(code); + spin_unlock_irqrestore(&i2400m->rx_lock, flags); +} + + +/** + * i2400m_msg_to_dev - Send a control message to the device and get a response + * + * @i2400m: device descriptor + * + * @msg_skb: an skb * + * + * @buf: pointer to the buffer containing the message to be sent; it + * has to start with a &struct i2400M_l3l4_hdr and then + * followed by the payload. Once this function returns, the + * buffer can be reused. + * + * @buf_len: buffer size + * + * Returns: + * + * Pointer to skb containing the ack message. You need to check the + * pointer with IS_ERR(), as it might be an error code. Error codes + * could happen because: + * + * - the message wasn't formatted correctly + * - couldn't send the message + * - failed waiting for a response + * - the ack message wasn't formatted correctly + * + * The returned skb has been allocated with wimax_msg_to_user_alloc(), + * it contains the reponse in a netlink attribute and is ready to be + * passed up to user space with wimax_msg_to_user_send(). To access + * the payload and its length, use wimax_msg_{data,len}() on the skb. + * + * The skb has to be freed w |