ath9k: Add a debugfs interface for controlling virtual wiphys
debugfs ath9k/phy#/wiphy can be used to show the current list of virtual wiphys and to add/remove virtual wiphys. Eventually, this interface could be replaced with a cfg80211/nl80211 command that is passed through mac80211. For example: # cat /debug/ath9k/phy0/wiphy primary: phy0 # echo add > /debug/ath9k/phy0/wiphy # cat /debug/ath9k/phy0/wiphy primary: phy0 secondary: phy1 # echo del=phy1 > /debug/ath9k/phy0/wiphy # cat /debug/ath9k/phy0/wiphy primary: phy0 In addition, following commands can be used to test pausing and unpausing of the virtual wiphys: pause=phy1 unpause=phy1 select=phy1 (select pauses and unpauses wiphys automatically based on channel) schedule=500 (set wiphy scheduling interval in msec; 0 = disable; default value: 500) Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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@ -330,6 +330,163 @@ static const struct file_operations fops_rcstat = {
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.owner = THIS_MODULE
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.owner = THIS_MODULE
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};
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};
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static const char * ath_wiphy_state_str(enum ath_wiphy_state state)
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{
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switch (state) {
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case ATH_WIPHY_INACTIVE:
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return "INACTIVE";
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case ATH_WIPHY_ACTIVE:
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return "ACTIVE";
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case ATH_WIPHY_PAUSING:
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return "PAUSING";
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case ATH_WIPHY_PAUSED:
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return "PAUSED";
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case ATH_WIPHY_SCAN:
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return "SCAN";
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}
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return "?";
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}
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static ssize_t read_file_wiphy(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ath_softc *sc = file->private_data;
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char buf[512];
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unsigned int len = 0;
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int i;
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u8 addr[ETH_ALEN];
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len += snprintf(buf + len, sizeof(buf) - len,
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"primary: %s (%s chan=%d ht=%d)\n",
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wiphy_name(sc->pri_wiphy->hw->wiphy),
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ath_wiphy_state_str(sc->pri_wiphy->state),
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sc->pri_wiphy->chan_idx, sc->pri_wiphy->chan_is_ht);
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for (i = 0; i < sc->num_sec_wiphy; i++) {
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struct ath_wiphy *aphy = sc->sec_wiphy[i];
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if (aphy == NULL)
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continue;
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len += snprintf(buf + len, sizeof(buf) - len,
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"secondary: %s (%s chan=%d ht=%d)\n",
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wiphy_name(aphy->hw->wiphy),
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ath_wiphy_state_str(aphy->state),
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aphy->chan_idx, aphy->chan_is_ht);
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}
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put_unaligned_le32(REG_READ(sc->sc_ah, AR_STA_ID0), addr);
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put_unaligned_le16(REG_READ(sc->sc_ah, AR_STA_ID1) & 0xffff, addr + 4);
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len += snprintf(buf + len, sizeof(buf) - len,
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"addr: %pM\n", addr);
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put_unaligned_le32(REG_READ(sc->sc_ah, AR_BSSMSKL), addr);
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put_unaligned_le16(REG_READ(sc->sc_ah, AR_BSSMSKU) & 0xffff, addr + 4);
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len += snprintf(buf + len, sizeof(buf) - len,
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"addrmask: %pM\n", addr);
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return simple_read_from_buffer(user_buf, count, ppos, buf, len);
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}
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static struct ath_wiphy * get_wiphy(struct ath_softc *sc, const char *name)
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{
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int i;
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if (strcmp(name, wiphy_name(sc->pri_wiphy->hw->wiphy)) == 0)
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return sc->pri_wiphy;
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for (i = 0; i < sc->num_sec_wiphy; i++) {
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struct ath_wiphy *aphy = sc->sec_wiphy[i];
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if (aphy && strcmp(name, wiphy_name(aphy->hw->wiphy)) == 0)
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return aphy;
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}
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return NULL;
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}
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static int del_wiphy(struct ath_softc *sc, const char *name)
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{
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struct ath_wiphy *aphy = get_wiphy(sc, name);
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if (!aphy)
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return -ENOENT;
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return ath9k_wiphy_del(aphy);
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}
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static int pause_wiphy(struct ath_softc *sc, const char *name)
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{
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struct ath_wiphy *aphy = get_wiphy(sc, name);
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if (!aphy)
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return -ENOENT;
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return ath9k_wiphy_pause(aphy);
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}
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static int unpause_wiphy(struct ath_softc *sc, const char *name)
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{
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struct ath_wiphy *aphy = get_wiphy(sc, name);
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if (!aphy)
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return -ENOENT;
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return ath9k_wiphy_unpause(aphy);
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}
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static int select_wiphy(struct ath_softc *sc, const char *name)
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{
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struct ath_wiphy *aphy = get_wiphy(sc, name);
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if (!aphy)
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return -ENOENT;
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return ath9k_wiphy_select(aphy);
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}
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static int schedule_wiphy(struct ath_softc *sc, const char *msec)
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{
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ath9k_wiphy_set_scheduler(sc, simple_strtoul(msec, NULL, 0));
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return 0;
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}
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static ssize_t write_file_wiphy(struct file *file, const char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ath_softc *sc = file->private_data;
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char buf[50];
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size_t len;
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len = min(count, sizeof(buf) - 1);
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if (copy_from_user(buf, user_buf, len))
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return -EFAULT;
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buf[len] = '\0';
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if (len > 0 && buf[len - 1] == '\n')
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buf[len - 1] = '\0';
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if (strncmp(buf, "add", 3) == 0) {
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int res = ath9k_wiphy_add(sc);
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if (res < 0)
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return res;
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} else if (strncmp(buf, "del=", 4) == 0) {
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int res = del_wiphy(sc, buf + 4);
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if (res < 0)
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return res;
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} else if (strncmp(buf, "pause=", 6) == 0) {
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int res = pause_wiphy(sc, buf + 6);
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if (res < 0)
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return res;
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} else if (strncmp(buf, "unpause=", 8) == 0) {
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int res = unpause_wiphy(sc, buf + 8);
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if (res < 0)
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return res;
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} else if (strncmp(buf, "select=", 7) == 0) {
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int res = select_wiphy(sc, buf + 7);
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if (res < 0)
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return res;
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} else if (strncmp(buf, "schedule=", 9) == 0) {
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int res = schedule_wiphy(sc, buf + 9);
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if (res < 0)
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return res;
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} else
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return -EOPNOTSUPP;
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return count;
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}
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static const struct file_operations fops_wiphy = {
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.read = read_file_wiphy,
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.write = write_file_wiphy,
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.open = ath9k_debugfs_open,
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.owner = THIS_MODULE
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};
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int ath9k_init_debug(struct ath_softc *sc)
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int ath9k_init_debug(struct ath_softc *sc)
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{
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{
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sc->debug.debug_mask = ath9k_debug;
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sc->debug.debug_mask = ath9k_debug;
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@ -362,6 +519,12 @@ int ath9k_init_debug(struct ath_softc *sc)
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if (!sc->debug.debugfs_rcstat)
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if (!sc->debug.debugfs_rcstat)
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goto err;
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goto err;
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sc->debug.debugfs_wiphy = debugfs_create_file(
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"wiphy", S_IRUGO | S_IWUSR, sc->debug.debugfs_phy, sc,
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&fops_wiphy);
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if (!sc->debug.debugfs_wiphy)
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goto err;
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return 0;
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return 0;
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err:
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err:
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ath9k_exit_debug(sc);
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ath9k_exit_debug(sc);
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@ -370,6 +533,7 @@ err:
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void ath9k_exit_debug(struct ath_softc *sc)
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void ath9k_exit_debug(struct ath_softc *sc)
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{
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{
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debugfs_remove(sc->debug.debugfs_wiphy);
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debugfs_remove(sc->debug.debugfs_rcstat);
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debugfs_remove(sc->debug.debugfs_rcstat);
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debugfs_remove(sc->debug.debugfs_interrupt);
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debugfs_remove(sc->debug.debugfs_interrupt);
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debugfs_remove(sc->debug.debugfs_dma);
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debugfs_remove(sc->debug.debugfs_dma);
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@ -107,6 +107,7 @@ struct ath9k_debug {
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struct dentry *debugfs_dma;
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struct dentry *debugfs_dma;
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struct dentry *debugfs_interrupt;
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struct dentry *debugfs_interrupt;
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struct dentry *debugfs_rcstat;
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struct dentry *debugfs_rcstat;
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struct dentry *debugfs_wiphy;
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struct ath_stats stats;
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struct ath_stats stats;
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};
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};
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