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| author | Nathan Errera <nathan.errera@intel.com> | 2020-05-28 21:22:38 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2020-05-31 11:27:24 +0200 |
| commit | 093a48d2aa4b74db3134b61d7b7a061dbe79177b (patch) | |
| tree | 94bb74bf6060ca004bc929d78f9b440dbde02625 /net/wireless | |
| parent | 07c12d618f06c8876fe12a53217d92b32d7baf07 (diff) | |
| download | linux-093a48d2aa4b74db3134b61d7b7a061dbe79177b.tar.bz2 | |
cfg80211: support bigger kek/kck key length
With some newer AKMs, the KCK and KEK are bigger, so allow that
if the driver advertises support for it. In addition, add a new
attribute for the AKM so we can use it for offloaded rekeying.
Signed-off-by: Nathan Errera <nathan.errera@intel.com>
[reword commit message]
Link: https://lore.kernel.org/r/20200528212237.5eb58b00a5d1.I61b09d77c4f382e8d58a05dcca78096e99a6bc15@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/nl80211.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 3a24e6add13e..263ae395ad44 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -730,9 +730,16 @@ nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = { /* policy for GTK rekey offload attributes */ static const struct nla_policy nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { - [NL80211_REKEY_DATA_KEK] = NLA_POLICY_EXACT_LEN_WARN(NL80211_KEK_LEN), - [NL80211_REKEY_DATA_KCK] = NLA_POLICY_EXACT_LEN_WARN(NL80211_KCK_LEN), + [NL80211_REKEY_DATA_KEK] = { + .type = NLA_BINARY, + .len = NL80211_KEK_EXT_LEN + }, + [NL80211_REKEY_DATA_KCK] = { + .type = NLA_BINARY, + .len = NL80211_KCK_EXT_LEN + }, [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN_WARN(NL80211_REPLAY_CTR_LEN), + [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 }, }; static const struct nla_policy @@ -12347,14 +12354,22 @@ static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) return -EINVAL; if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) return -ERANGE; - if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) + if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN && + !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK && + nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN)) return -ERANGE; - if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) + if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN && + !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK && + nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN)) return -ERANGE; rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]); rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]); rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]); + rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]); + rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]); + if (tb[NL80211_REKEY_DATA_AKM]) + rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]); wdev_lock(wdev); if (!wdev->current_bss) { |