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nl80211: Add support to configure TID specific retry configuration

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This patch adds support to configure per TID retry configuration
through the NL80211_TID_CONFIG_ATTR_RETRY_SHORT and
NL80211_TID_CONFIG_ATTR_RETRY_LONG attributes. This TID specific
retry configuration will have more precedence than phy level
configuration.

Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org>
Link: https://lore.kernel.org/r/1579506687-18296-3-git-send-email-tamizhr@codeaurora.org
[rebase completely on top of my previous API changes]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Tamizh chelvam 2020-01-20 13:21:23 +05:30 committed by Johannes Berg
parent 3710a8a628
commit 6a21d16c4d
3 changed files with 48 additions and 0 deletions
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8
include/net/cfg80211.h
View File

@ -634,12 +634,15 @@ struct cfg80211_chan_def {
* @mask: bitmap of attributes indicating which parameter changed,
* similar to &nl80211_tid_config_supp.
* @noack: noack configuration value for the TID
* @retry_long: retry count value
* @retry_short: retry count value
*/
struct cfg80211_tid_cfg {
bool config_override;
u8 tids;
u32 mask;
enum nl80211_tid_config noack;
u8 retry_long, retry_short;
};
/**
@ -4644,6 +4647,8 @@ struct wiphy_iftype_akm_suites {
* supported by the driver for each vif
* @tid_config_support.peer: bitmap of attributes (configurations)
* supported by the driver for each peer
* @tid_config_support.max_retry: maximum supported retry count for
* long/short retry configuration
*/
struct wiphy {
/* assign these fields before you register the wiphy */
@ -4777,8 +4782,11 @@ struct wiphy {
struct {
u64 peer, vif;
u8 max_retry;
} tid_config_support;
u8 max_data_retry_count;
char priv[0] __aligned(NETDEV_ALIGN);
};

12
include/uapi/linux/nl80211.h
View File

@ -4785,6 +4785,16 @@ enum nl80211_tid_config {
* @NL80211_TID_CONFIG_ATTR_NOACK: Configure ack policy for the TID.
* specified in %NL80211_TID_CONFIG_ATTR_TID. see %enum nl80211_tid_config.
* Its type is u8.
* @NL80211_TID_CONFIG_ATTR_RETRY_SHORT: Number of retries used with data frame
* transmission, user-space sets this configuration in
* &NL80211_CMD_SET_TID_CONFIG. It is u8 type, min value is 1 and
* the max value is advertised by the driver in this attribute on
* output in wiphy capabilities.
* @NL80211_TID_CONFIG_ATTR_RETRY_LONG: Number of retries used with data frame
* transmission, user-space sets this configuration in
* &NL80211_CMD_SET_TID_CONFIG. Its type is u8, min value is 1 and
* the max value is advertised by the driver in this attribute on
* output in wiphy capabilities.
*/
enum nl80211_tid_config_attr {
__NL80211_TID_CONFIG_ATTR_INVALID,
@ -4794,6 +4804,8 @@ enum nl80211_tid_config_attr {
NL80211_TID_CONFIG_ATTR_OVERRIDE,
NL80211_TID_CONFIG_ATTR_TIDS,
NL80211_TID_CONFIG_ATTR_NOACK,
NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
NL80211_TID_CONFIG_ATTR_RETRY_LONG,
/* keep last */
__NL80211_TID_CONFIG_ATTR_AFTER_LAST,

28
net/wireless/nl80211.c
View File

@ -336,6 +336,8 @@ nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
[NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
[NL80211_TID_CONFIG_ATTR_NOACK] =
NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
[NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
[NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
};
const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
@ -1985,6 +1987,14 @@ nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
NL80211_TID_CONFIG_ATTR_PAD))
goto fail;
/* for now we just use the same value ... makes more sense */
if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
rdev->wiphy.tid_config_support.max_retry))
goto fail;
if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
rdev->wiphy.tid_config_support.max_retry))
goto fail;
nla_nest_end(msg, supp);
return 0;
@ -14019,6 +14029,24 @@ static int parse_tid_conf(struct cfg80211_registered_device *rdev,
nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
}
if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
tid_conf->retry_short =
nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
return -EINVAL;
}
if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
tid_conf->retry_long =
nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
return -EINVAL;
}
if (peer)
mask = rdev->wiphy.tid_config_support.peer;
else