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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
commite5fd91f1ef340da553f7a79da9540c3db711c937 (patch)
treeb11842027dc6641da63f4bcc524f8678263304a3 /net/ieee802154/nl802154.c
parent2a9b0348e685a63d97486f6749622b61e9e3292f (diff)
Linux-libre 4.2-gnu
Diffstat (limited to 'net/ieee802154/nl802154.c')
-rw-r--r--net/ieee802154/nl802154.c316
1 files changed, 290 insertions, 26 deletions
diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index f3c12f6a4..68f240168 100644
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -207,10 +207,11 @@ static const struct nla_policy nl802154_policy[NL802154_ATTR_MAX+1] = {
[NL802154_ATTR_PAGE] = { .type = NLA_U8, },
[NL802154_ATTR_CHANNEL] = { .type = NLA_U8, },
- [NL802154_ATTR_TX_POWER] = { .type = NLA_S8, },
+ [NL802154_ATTR_TX_POWER] = { .type = NLA_S32, },
[NL802154_ATTR_CCA_MODE] = { .type = NLA_U32, },
[NL802154_ATTR_CCA_OPT] = { .type = NLA_U32, },
+ [NL802154_ATTR_CCA_ED_LEVEL] = { .type = NLA_S32, },
[NL802154_ATTR_SUPPORTED_CHANNEL] = { .type = NLA_U32, },
@@ -225,6 +226,10 @@ static const struct nla_policy nl802154_policy[NL802154_ATTR_MAX+1] = {
[NL802154_ATTR_MAX_FRAME_RETRIES] = { .type = NLA_S8, },
[NL802154_ATTR_LBT_MODE] = { .type = NLA_U8, },
+
+ [NL802154_ATTR_WPAN_PHY_CAPS] = { .type = NLA_NESTED },
+
+ [NL802154_ATTR_SUPPORTED_COMMANDS] = { .type = NLA_NESTED },
};
/* message building helper */
@@ -236,6 +241,28 @@ static inline void *nl802154hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
}
static int
+nl802154_put_flags(struct sk_buff *msg, int attr, u32 mask)
+{
+ struct nlattr *nl_flags = nla_nest_start(msg, attr);
+ int i;
+
+ if (!nl_flags)
+ return -ENOBUFS;
+
+ i = 0;
+ while (mask) {
+ if ((mask & 1) && nla_put_flag(msg, i))
+ return -ENOBUFS;
+
+ mask >>= 1;
+ i++;
+ }
+
+ nla_nest_end(msg, nl_flags);
+ return 0;
+}
+
+static int
nl802154_send_wpan_phy_channels(struct cfg802154_registered_device *rdev,
struct sk_buff *msg)
{
@@ -248,7 +275,7 @@ nl802154_send_wpan_phy_channels(struct cfg802154_registered_device *rdev,
for (page = 0; page <= IEEE802154_MAX_PAGE; page++) {
if (nla_put_u32(msg, NL802154_ATTR_SUPPORTED_CHANNEL,
- rdev->wpan_phy.channels_supported[page]))
+ rdev->wpan_phy.supported.channels[page]))
return -ENOBUFS;
}
nla_nest_end(msg, nl_page);
@@ -256,12 +283,100 @@ nl802154_send_wpan_phy_channels(struct cfg802154_registered_device *rdev,
return 0;
}
+static int
+nl802154_put_capabilities(struct sk_buff *msg,
+ struct cfg802154_registered_device *rdev)
+{
+ const struct wpan_phy_supported *caps = &rdev->wpan_phy.supported;
+ struct nlattr *nl_caps, *nl_channels;
+ int i;
+
+ nl_caps = nla_nest_start(msg, NL802154_ATTR_WPAN_PHY_CAPS);
+ if (!nl_caps)
+ return -ENOBUFS;
+
+ nl_channels = nla_nest_start(msg, NL802154_CAP_ATTR_CHANNELS);
+ if (!nl_channels)
+ return -ENOBUFS;
+
+ for (i = 0; i <= IEEE802154_MAX_PAGE; i++) {
+ if (caps->channels[i]) {
+ if (nl802154_put_flags(msg, i, caps->channels[i]))
+ return -ENOBUFS;
+ }
+ }
+
+ nla_nest_end(msg, nl_channels);
+
+ if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL) {
+ struct nlattr *nl_ed_lvls;
+
+ nl_ed_lvls = nla_nest_start(msg,
+ NL802154_CAP_ATTR_CCA_ED_LEVELS);
+ if (!nl_ed_lvls)
+ return -ENOBUFS;
+
+ for (i = 0; i < caps->cca_ed_levels_size; i++) {
+ if (nla_put_s32(msg, i, caps->cca_ed_levels[i]))
+ return -ENOBUFS;
+ }
+
+ nla_nest_end(msg, nl_ed_lvls);
+ }
+
+ if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER) {
+ struct nlattr *nl_tx_pwrs;
+
+ nl_tx_pwrs = nla_nest_start(msg, NL802154_CAP_ATTR_TX_POWERS);
+ if (!nl_tx_pwrs)
+ return -ENOBUFS;
+
+ for (i = 0; i < caps->tx_powers_size; i++) {
+ if (nla_put_s32(msg, i, caps->tx_powers[i]))
+ return -ENOBUFS;
+ }
+
+ nla_nest_end(msg, nl_tx_pwrs);
+ }
+
+ if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE) {
+ if (nl802154_put_flags(msg, NL802154_CAP_ATTR_CCA_MODES,
+ caps->cca_modes) ||
+ nl802154_put_flags(msg, NL802154_CAP_ATTR_CCA_OPTS,
+ caps->cca_opts))
+ return -ENOBUFS;
+ }
+
+ if (nla_put_u8(msg, NL802154_CAP_ATTR_MIN_MINBE, caps->min_minbe) ||
+ nla_put_u8(msg, NL802154_CAP_ATTR_MAX_MINBE, caps->max_minbe) ||
+ nla_put_u8(msg, NL802154_CAP_ATTR_MIN_MAXBE, caps->min_maxbe) ||
+ nla_put_u8(msg, NL802154_CAP_ATTR_MAX_MAXBE, caps->max_maxbe) ||
+ nla_put_u8(msg, NL802154_CAP_ATTR_MIN_CSMA_BACKOFFS,
+ caps->min_csma_backoffs) ||
+ nla_put_u8(msg, NL802154_CAP_ATTR_MAX_CSMA_BACKOFFS,
+ caps->max_csma_backoffs) ||
+ nla_put_s8(msg, NL802154_CAP_ATTR_MIN_FRAME_RETRIES,
+ caps->min_frame_retries) ||
+ nla_put_s8(msg, NL802154_CAP_ATTR_MAX_FRAME_RETRIES,
+ caps->max_frame_retries) ||
+ nl802154_put_flags(msg, NL802154_CAP_ATTR_IFTYPES,
+ caps->iftypes) ||
+ nla_put_u32(msg, NL802154_CAP_ATTR_LBT, caps->lbt))
+ return -ENOBUFS;
+
+ nla_nest_end(msg, nl_caps);
+
+ return 0;
+}
+
static int nl802154_send_wpan_phy(struct cfg802154_registered_device *rdev,
enum nl802154_commands cmd,
struct sk_buff *msg, u32 portid, u32 seq,
int flags)
{
+ struct nlattr *nl_cmds;
void *hdr;
+ int i;
hdr = nl802154hdr_put(msg, portid, seq, flags, cmd);
if (!hdr)
@@ -286,25 +401,76 @@ static int nl802154_send_wpan_phy(struct cfg802154_registered_device *rdev,
rdev->wpan_phy.current_channel))
goto nla_put_failure;
- /* supported channels array */
+ /* TODO remove this behaviour, we still keep support it for a while
+ * so users can change the behaviour to the new one.
+ */
if (nl802154_send_wpan_phy_channels(rdev, msg))
goto nla_put_failure;
/* cca mode */
- if (nla_put_u32(msg, NL802154_ATTR_CCA_MODE,
- rdev->wpan_phy.cca.mode))
- goto nla_put_failure;
+ if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE) {
+ if (nla_put_u32(msg, NL802154_ATTR_CCA_MODE,
+ rdev->wpan_phy.cca.mode))
+ goto nla_put_failure;
+
+ if (rdev->wpan_phy.cca.mode == NL802154_CCA_ENERGY_CARRIER) {
+ if (nla_put_u32(msg, NL802154_ATTR_CCA_OPT,
+ rdev->wpan_phy.cca.opt))
+ goto nla_put_failure;
+ }
+ }
+
+ if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER) {
+ if (nla_put_s32(msg, NL802154_ATTR_TX_POWER,
+ rdev->wpan_phy.transmit_power))
+ goto nla_put_failure;
+ }
- if (rdev->wpan_phy.cca.mode == NL802154_CCA_ENERGY_CARRIER) {
- if (nla_put_u32(msg, NL802154_ATTR_CCA_OPT,
- rdev->wpan_phy.cca.opt))
+ if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL) {
+ if (nla_put_s32(msg, NL802154_ATTR_CCA_ED_LEVEL,
+ rdev->wpan_phy.cca_ed_level))
goto nla_put_failure;
}
- if (nla_put_s8(msg, NL802154_ATTR_TX_POWER,
- rdev->wpan_phy.transmit_power))
+ if (nl802154_put_capabilities(msg, rdev))
+ goto nla_put_failure;
+
+ nl_cmds = nla_nest_start(msg, NL802154_ATTR_SUPPORTED_COMMANDS);
+ if (!nl_cmds)
goto nla_put_failure;
+ i = 0;
+#define CMD(op, n) \
+ do { \
+ if (rdev->ops->op) { \
+ i++; \
+ if (nla_put_u32(msg, i, NL802154_CMD_ ## n)) \
+ goto nla_put_failure; \
+ } \
+ } while (0)
+
+ CMD(add_virtual_intf, NEW_INTERFACE);
+ CMD(del_virtual_intf, DEL_INTERFACE);
+ CMD(set_channel, SET_CHANNEL);
+ CMD(set_pan_id, SET_PAN_ID);
+ CMD(set_short_addr, SET_SHORT_ADDR);
+ CMD(set_backoff_exponent, SET_BACKOFF_EXPONENT);
+ CMD(set_max_csma_backoffs, SET_MAX_CSMA_BACKOFFS);
+ CMD(set_max_frame_retries, SET_MAX_FRAME_RETRIES);
+ CMD(set_lbt_mode, SET_LBT_MODE);
+
+ if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER)
+ CMD(set_tx_power, SET_TX_POWER);
+
+ if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL)
+ CMD(set_cca_ed_level, SET_CCA_ED_LEVEL);
+
+ if (rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE)
+ CMD(set_cca_mode, SET_CCA_MODE);
+
+#undef CMD
+ nla_nest_end(msg, nl_cmds);
+
finish:
genlmsg_end(msg, hdr);
return 0;
@@ -575,7 +741,8 @@ static int nl802154_new_interface(struct sk_buff *skb, struct genl_info *info)
if (info->attrs[NL802154_ATTR_IFTYPE]) {
type = nla_get_u32(info->attrs[NL802154_ATTR_IFTYPE]);
- if (type > NL802154_IFTYPE_MAX)
+ if (type > NL802154_IFTYPE_MAX ||
+ !(rdev->wpan_phy.supported.iftypes & BIT(type)))
return -EINVAL;
}
@@ -625,7 +792,8 @@ static int nl802154_set_channel(struct sk_buff *skb, struct genl_info *info)
channel = nla_get_u8(info->attrs[NL802154_ATTR_CHANNEL]);
/* check 802.15.4 constraints */
- if (page > IEEE802154_MAX_PAGE || channel > IEEE802154_MAX_CHANNEL)
+ if (page > IEEE802154_MAX_PAGE || channel > IEEE802154_MAX_CHANNEL ||
+ !(rdev->wpan_phy.supported.channels[page] & BIT(channel)))
return -EINVAL;
return rdev_set_channel(rdev, page, channel);
@@ -636,12 +804,17 @@ static int nl802154_set_cca_mode(struct sk_buff *skb, struct genl_info *info)
struct cfg802154_registered_device *rdev = info->user_ptr[0];
struct wpan_phy_cca cca;
+ if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_MODE))
+ return -EOPNOTSUPP;
+
if (!info->attrs[NL802154_ATTR_CCA_MODE])
return -EINVAL;
cca.mode = nla_get_u32(info->attrs[NL802154_ATTR_CCA_MODE]);
/* checking 802.15.4 constraints */
- if (cca.mode < NL802154_CCA_ENERGY || cca.mode > NL802154_CCA_ATTR_MAX)
+ if (cca.mode < NL802154_CCA_ENERGY ||
+ cca.mode > NL802154_CCA_ATTR_MAX ||
+ !(rdev->wpan_phy.supported.cca_modes & BIT(cca.mode)))
return -EINVAL;
if (cca.mode == NL802154_CCA_ENERGY_CARRIER) {
@@ -649,13 +822,58 @@ static int nl802154_set_cca_mode(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
cca.opt = nla_get_u32(info->attrs[NL802154_ATTR_CCA_OPT]);
- if (cca.opt > NL802154_CCA_OPT_ATTR_MAX)
+ if (cca.opt > NL802154_CCA_OPT_ATTR_MAX ||
+ !(rdev->wpan_phy.supported.cca_opts & BIT(cca.opt)))
return -EINVAL;
}
return rdev_set_cca_mode(rdev, &cca);
}
+static int nl802154_set_cca_ed_level(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg802154_registered_device *rdev = info->user_ptr[0];
+ s32 ed_level;
+ int i;
+
+ if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_CCA_ED_LEVEL))
+ return -EOPNOTSUPP;
+
+ if (!info->attrs[NL802154_ATTR_CCA_ED_LEVEL])
+ return -EINVAL;
+
+ ed_level = nla_get_s32(info->attrs[NL802154_ATTR_CCA_ED_LEVEL]);
+
+ for (i = 0; i < rdev->wpan_phy.supported.cca_ed_levels_size; i++) {
+ if (ed_level == rdev->wpan_phy.supported.cca_ed_levels[i])
+ return rdev_set_cca_ed_level(rdev, ed_level);
+ }
+
+ return -EINVAL;
+}
+
+static int nl802154_set_tx_power(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg802154_registered_device *rdev = info->user_ptr[0];
+ s32 power;
+ int i;
+
+ if (!(rdev->wpan_phy.flags & WPAN_PHY_FLAG_TXPOWER))
+ return -EOPNOTSUPP;
+
+ if (!info->attrs[NL802154_ATTR_TX_POWER])
+ return -EINVAL;
+
+ power = nla_get_s32(info->attrs[NL802154_ATTR_TX_POWER]);
+
+ for (i = 0; i < rdev->wpan_phy.supported.tx_powers_size; i++) {
+ if (power == rdev->wpan_phy.supported.tx_powers[i])
+ return rdev_set_tx_power(rdev, power);
+ }
+
+ return -EINVAL;
+}
+
static int nl802154_set_pan_id(struct sk_buff *skb, struct genl_info *info)
{
struct cfg802154_registered_device *rdev = info->user_ptr[0];
@@ -668,14 +886,22 @@ static int nl802154_set_pan_id(struct sk_buff *skb, struct genl_info *info)
return -EBUSY;
/* don't change address fields on monitor */
- if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
- return -EINVAL;
-
- if (!info->attrs[NL802154_ATTR_PAN_ID])
+ if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR ||
+ !info->attrs[NL802154_ATTR_PAN_ID])
return -EINVAL;
pan_id = nla_get_le16(info->attrs[NL802154_ATTR_PAN_ID]);
+ /* TODO
+ * I am not sure about to check here on broadcast pan_id.
+ * Broadcast is a valid setting, comment from 802.15.4:
+ * If this value is 0xffff, the device is not associated.
+ *
+ * This could useful to simple deassociate an device.
+ */
+ if (pan_id == cpu_to_le16(IEEE802154_PAN_ID_BROADCAST))
+ return -EINVAL;
+
return rdev_set_pan_id(rdev, wpan_dev, pan_id);
}
@@ -691,14 +917,27 @@ static int nl802154_set_short_addr(struct sk_buff *skb, struct genl_info *info)
return -EBUSY;
/* don't change address fields on monitor */
- if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
- return -EINVAL;
-
- if (!info->attrs[NL802154_ATTR_SHORT_ADDR])
+ if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR ||
+ !info->attrs[NL802154_ATTR_SHORT_ADDR])
return -EINVAL;
short_addr = nla_get_le16(info->attrs[NL802154_ATTR_SHORT_ADDR]);
+ /* TODO
+ * I am not sure about to check here on broadcast short_addr.
+ * Broadcast is a valid setting, comment from 802.15.4:
+ * A value of 0xfffe indicates that the device has
+ * associated but has not been allocated an address. A
+ * value of 0xffff indicates that the device does not
+ * have a short address.
+ *
+ * I think we should allow to set these settings but
+ * don't allow to allow socket communication with it.
+ */
+ if (short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_UNSPEC) ||
+ short_addr == cpu_to_le16(IEEE802154_ADDR_SHORT_BROADCAST))
+ return -EINVAL;
+
return rdev_set_short_addr(rdev, wpan_dev, short_addr);
}
@@ -722,7 +961,11 @@ nl802154_set_backoff_exponent(struct sk_buff *skb, struct genl_info *info)
max_be = nla_get_u8(info->attrs[NL802154_ATTR_MAX_BE]);
/* check 802.15.4 constraints */
- if (max_be < 3 || max_be > 8 || min_be > max_be)
+ if (min_be < rdev->wpan_phy.supported.min_minbe ||
+ min_be > rdev->wpan_phy.supported.max_minbe ||
+ max_be < rdev->wpan_phy.supported.min_maxbe ||
+ max_be > rdev->wpan_phy.supported.max_maxbe ||
+ min_be > max_be)
return -EINVAL;
return rdev_set_backoff_exponent(rdev, wpan_dev, min_be, max_be);
@@ -747,7 +990,8 @@ nl802154_set_max_csma_backoffs(struct sk_buff *skb, struct genl_info *info)
info->attrs[NL802154_ATTR_MAX_CSMA_BACKOFFS]);
/* check 802.15.4 constraints */
- if (max_csma_backoffs > 5)
+ if (max_csma_backoffs < rdev->wpan_phy.supported.min_csma_backoffs ||
+ max_csma_backoffs > rdev->wpan_phy.supported.max_csma_backoffs)
return -EINVAL;
return rdev_set_max_csma_backoffs(rdev, wpan_dev, max_csma_backoffs);
@@ -771,7 +1015,8 @@ nl802154_set_max_frame_retries(struct sk_buff *skb, struct genl_info *info)
info->attrs[NL802154_ATTR_MAX_FRAME_RETRIES]);
/* check 802.15.4 constraints */
- if (max_frame_retries < -1 || max_frame_retries > 7)
+ if (max_frame_retries < rdev->wpan_phy.supported.min_frame_retries ||
+ max_frame_retries > rdev->wpan_phy.supported.max_frame_retries)
return -EINVAL;
return rdev_set_max_frame_retries(rdev, wpan_dev, max_frame_retries);
@@ -791,6 +1036,9 @@ static int nl802154_set_lbt_mode(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
mode = !!nla_get_u8(info->attrs[NL802154_ATTR_LBT_MODE]);
+ if (!wpan_phy_supported_bool(mode, rdev->wpan_phy.supported.lbt))
+ return -EINVAL;
+
return rdev_set_lbt_mode(rdev, wpan_dev, mode);
}
@@ -937,6 +1185,22 @@ static const struct genl_ops nl802154_ops[] = {
NL802154_FLAG_NEED_RTNL,
},
{
+ .cmd = NL802154_CMD_SET_CCA_ED_LEVEL,
+ .doit = nl802154_set_cca_ed_level,
+ .policy = nl802154_policy,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
+ NL802154_FLAG_NEED_RTNL,
+ },
+ {
+ .cmd = NL802154_CMD_SET_TX_POWER,
+ .doit = nl802154_set_tx_power,
+ .policy = nl802154_policy,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = NL802154_FLAG_NEED_WPAN_PHY |
+ NL802154_FLAG_NEED_RTNL,
+ },
+ {
.cmd = NL802154_CMD_SET_PAN_ID,
.doit = nl802154_set_pan_id,
.policy = nl802154_policy,