renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-30 08:04:13 +08:00
Code

nl802154: add support for dump phy capabilities

Browse Source 
This patch add support to nl802154 to dump all phy capabilities which is
inside the wpan_phy_supported struct. Also we introduce a new method to
dumping supported channels. The new method will offer a easier interface
and has lesser netlink traffic.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring 2015-05-17 21:44:53 +02:00 committed by Marcel Holtmann
parent 392f4e67ad
commit 0e66545701
2 changed files with 173 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
include/net/nl802154.h
View File

@ -100,6 +100,8 @@ enum nl802154_attrs {
NL802154_ATTR_EXTENDED_ADDR,
NL802154_ATTR_WPAN_PHY_CAPS,
/* add attributes here, update the policy in nl802154.c */
__NL802154_ATTR_AFTER_LAST,
@ -119,6 +121,61 @@ enum nl802154_iftype {
NL802154_IFTYPE_MAX = NUM_NL802154_IFTYPES - 1
};
/**
* enum nl802154_wpan_phy_capability_attr - wpan phy capability attributes
*
* @__NL802154_CAP_ATTR_INVALID: attribute number 0 is reserved
* @NL802154_CAP_ATTR_CHANNELS: a nested attribute for nl802154_channel_attr
* @NL802154_CAP_ATTR_TX_POWERS: a nested attribute for
* nl802154_wpan_phy_tx_power
* @NL802154_CAP_ATTR_MIN_CCA_ED_LEVEL: minimum value for cca_ed_level
* @NL802154_CAP_ATTR_MAX_CCA_ED_LEVEL: maxmimum value for cca_ed_level
* @NL802154_CAP_ATTR_CCA_MODES: nl802154_cca_modes flags
* @NL802154_CAP_ATTR_CCA_OPTS: nl802154_cca_opts flags
* @NL802154_CAP_ATTR_MIN_MINBE: minimum of minbe value
* @NL802154_CAP_ATTR_MAX_MINBE: maximum of minbe value
* @NL802154_CAP_ATTR_MIN_MAXBE: minimum of maxbe value
* @NL802154_CAP_ATTR_MAX_MINBE: maximum of maxbe value
* @NL802154_CAP_ATTR_MIN_CSMA_BACKOFFS: minimum of csma backoff value
* @NL802154_CAP_ATTR_MAX_CSMA_BACKOFFS: maximum of csma backoffs value
* @NL802154_CAP_ATTR_MIN_FRAME_RETRIES: minimum of frame retries value
* @NL802154_CAP_ATTR_MAX_FRAME_RETRIES: maximum of frame retries value
* @NL802154_CAP_ATTR_IFTYPES: nl802154_iftype flags
* @NL802154_CAP_ATTR_LBT: nl802154_supported_bool_states flags
* @NL802154_CAP_ATTR_MAX: highest cap attribute currently defined
* @__NL802154_CAP_ATTR_AFTER_LAST: internal use
*/
enum nl802154_wpan_phy_capability_attr {
__NL802154_CAP_ATTR_INVALID,
NL802154_CAP_ATTR_IFTYPES,
NL802154_CAP_ATTR_CHANNELS,
NL802154_CAP_ATTR_TX_POWERS,
NL802154_CAP_ATTR_CCA_ED_LEVELS,
NL802154_CAP_ATTR_CCA_MODES,
NL802154_CAP_ATTR_CCA_OPTS,
NL802154_CAP_ATTR_MIN_MINBE,
NL802154_CAP_ATTR_MAX_MINBE,
NL802154_CAP_ATTR_MIN_MAXBE,
NL802154_CAP_ATTR_MAX_MAXBE,
NL802154_CAP_ATTR_MIN_CSMA_BACKOFFS,
NL802154_CAP_ATTR_MAX_CSMA_BACKOFFS,
NL802154_CAP_ATTR_MIN_FRAME_RETRIES,
NL802154_CAP_ATTR_MAX_FRAME_RETRIES,
NL802154_CAP_ATTR_LBT,
/* keep last */
__NL802154_CAP_ATTR_AFTER_LAST,
NL802154_CAP_ATTR_MAX = __NL802154_CAP_ATTR_AFTER_LAST - 1
};
/**
* enum nl802154_cca_modes - cca modes
*

117
net/ieee802154/nl802154.c
View File

@ -225,6 +225,8 @@ 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 },
};
/* message building helper */
@ -235,6 +237,28 @@ static inline void *nl802154hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
return genlmsg_put(skb, portid, seq, &nl802154_fam, flags, cmd);
}
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)
@ -256,6 +280,92 @@ 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,
@ -286,7 +396,9 @@ 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;
@ -309,6 +421,9 @@ static int nl802154_send_wpan_phy(struct cfg802154_registered_device *rdev,
goto nla_put_failure;
}
if (nl802154_put_capabilities(msg, rdev))
goto nla_put_failure;
finish:
genlmsg_end(msg, hdr);
return 0;