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mac802154: make csma/cca parameters per-wpan

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Commit 9b2777d608 (ieee802154: add TX power control to wpan_phy)
and following erroneously added CSMA and CCA parameters for 802.15.4
devices as PHY parameters, while they are actually MAC parameters and
can differ for any two WPAN instances. Since it is now sensible to have
multiple WPAN devices with differing CSMA/CCA parameters, make these
parameters MAC parameters instead.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Phoebe Buckheister
2014-03-31 21:37:46 +02:00
committed by David S. Miller
parent 336908f6d7
commit e462ded699
11 changed files with 252 additions and 236 deletions
Download Patch File Download Diff File Expand all files Collapse all files

122
net/ieee802154/nl-mac.c
View File

@@ -264,6 +264,7 @@ static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid,
{
void *hdr;
struct wpan_phy *phy;
struct ieee802154_mlme_ops *ops;
__le16 short_addr, pan_id;
pr_debug("%s\n", __func__);
@@ -273,11 +274,12 @@ static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid,
if (!hdr)
goto out;
phy = ieee802154_mlme_ops(dev)->get_phy(dev);
ops = ieee802154_mlme_ops(dev);
phy = ops->get_phy(dev);
BUG_ON(!phy);
short_addr = ieee802154_mlme_ops(dev)->get_short_addr(dev);
pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
short_addr = ops->get_short_addr(dev);
pan_id = ops->get_pan_id(dev);
if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
@@ -287,6 +289,30 @@ static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid,
nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR, short_addr) ||
nla_put_shortaddr(msg, IEEE802154_ATTR_PAN_ID, pan_id))
goto nla_put_failure;
if (ops->get_mac_params) {
struct ieee802154_mac_params params;
ops->get_mac_params(dev, &params);
if (nla_put_s8(msg, IEEE802154_ATTR_TXPOWER,
params.transmit_power) ||
nla_put_u8(msg, IEEE802154_ATTR_LBT_ENABLED, params.lbt) ||
nla_put_u8(msg, IEEE802154_ATTR_CCA_MODE,
params.cca_mode) ||
nla_put_s32(msg, IEEE802154_ATTR_CCA_ED_LEVEL,
params.cca_ed_level) ||
nla_put_u8(msg, IEEE802154_ATTR_CSMA_RETRIES,
params.csma_retries) ||
nla_put_u8(msg, IEEE802154_ATTR_CSMA_MIN_BE,
params.min_be) ||
nla_put_u8(msg, IEEE802154_ATTR_CSMA_MAX_BE,
params.max_be) ||
nla_put_s8(msg, IEEE802154_ATTR_FRAME_RETRIES,
params.frame_retries))
goto nla_put_failure;
}
wpan_phy_put(phy);
return genlmsg_end(msg, hdr);
@@ -599,3 +625,93 @@ cont:
return skb->len;
}
int ieee802154_set_macparams(struct sk_buff *skb, struct genl_info *info)
{
struct net_device *dev = NULL;
struct ieee802154_mlme_ops *ops;
struct ieee802154_mac_params params;
struct wpan_phy *phy;
int rc = -EINVAL;
pr_debug("%s\n", __func__);
dev = ieee802154_nl_get_dev(info);
if (!dev)
return -ENODEV;
ops = ieee802154_mlme_ops(dev);
if (!ops->get_mac_params || !ops->set_mac_params) {
rc = -EOPNOTSUPP;
goto out;
}
if (netif_running(dev)) {
rc = -EBUSY;
goto out;
}
if (!info->attrs[IEEE802154_ATTR_LBT_ENABLED] &&
!info->attrs[IEEE802154_ATTR_CCA_MODE] &&
!info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL] &&
!info->attrs[IEEE802154_ATTR_CSMA_RETRIES] &&
!info->attrs[IEEE802154_ATTR_CSMA_MIN_BE] &&
!info->attrs[IEEE802154_ATTR_CSMA_MAX_BE] &&
!info->attrs[IEEE802154_ATTR_FRAME_RETRIES])
goto out;
phy = ops->get_phy(dev);
if ((!phy->set_lbt && info->attrs[IEEE802154_ATTR_LBT_ENABLED]) ||
(!phy->set_cca_mode && info->attrs[IEEE802154_ATTR_CCA_MODE]) ||
(!phy->set_cca_ed_level &&
info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL]) ||
(!phy->set_csma_params &&
(info->attrs[IEEE802154_ATTR_CSMA_RETRIES] ||
info->attrs[IEEE802154_ATTR_CSMA_MIN_BE] ||
info->attrs[IEEE802154_ATTR_CSMA_MAX_BE])) ||
(!phy->set_frame_retries &&
info->attrs[IEEE802154_ATTR_FRAME_RETRIES])) {
rc = -EOPNOTSUPP;
goto out_phy;
}
ops->get_mac_params(dev, &params);
if (info->attrs[IEEE802154_ATTR_TXPOWER])
params.transmit_power = nla_get_s8(info->attrs[IEEE802154_ATTR_TXPOWER]);
if (info->attrs[IEEE802154_ATTR_LBT_ENABLED])
params.lbt = nla_get_u8(info->attrs[IEEE802154_ATTR_LBT_ENABLED]);
if (info->attrs[IEEE802154_ATTR_CCA_MODE])
params.cca_mode = nla_get_u8(info->attrs[IEEE802154_ATTR_CCA_MODE]);
if (info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL])
params.cca_ed_level = nla_get_s32(info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL]);
if (info->attrs[IEEE802154_ATTR_CSMA_RETRIES])
params.csma_retries = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_RETRIES]);
if (info->attrs[IEEE802154_ATTR_CSMA_MIN_BE])
params.min_be = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_MIN_BE]);
if (info->attrs[IEEE802154_ATTR_CSMA_MAX_BE])
params.max_be = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_MAX_BE]);
if (info->attrs[IEEE802154_ATTR_FRAME_RETRIES])
params.frame_retries = nla_get_s8(info->attrs[IEEE802154_ATTR_FRAME_RETRIES]);
rc = ops->set_mac_params(dev, &params);
wpan_phy_put(phy);
dev_put(dev);
return rc;
out_phy:
wpan_phy_put(phy);
out:
dev_put(dev);
return rc;
}