2023-06-11 09:20:09

by Greenman, Gregory

[permalink] [raw]
Subject: [PATCH 4/4] wifi: mac80211: fragment per STA profile correctly

From: Benjamin Berg <[email protected]>

When fragmenting the ML per STA profile, the element ID should be
IEEE80211_MLE_SUBELEM_PER_STA_PROFILE rather than WLAN_EID_FRAGMENT.

Change the helper function to take the to be used element ID and pass
the appropriate value for each of the fragmentation levels.

Fixes: 81151ce462e5 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Benjamin Berg <[email protected]>
Signed-off-by: Gregory Greenman <[email protected]>
---
net/mac80211/ieee80211_i.h | 2 +-
net/mac80211/mlme.c | 5 +++--
net/mac80211/util.c | 4 ++--
3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 561a2980f92f..4afd5095366c 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -2317,7 +2317,7 @@ ieee802_11_parse_elems(const u8 *start, size_t len, bool action,
return ieee802_11_parse_elems_crc(start, len, action, 0, 0, bss);
}

-void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos);
+void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos, u8 frag_id);

extern const int ieee802_1d_to_ac[8];

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 6970d5e7ac8f..738822b82d3e 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1367,10 +1367,11 @@ static void ieee80211_assoc_add_ml_elem(struct ieee80211_sub_if_data *sdata,
ieee80211_add_non_inheritance_elem(skb, outer_present_elems,
link_present_elems);

- ieee80211_fragment_element(skb, subelem_len);
+ ieee80211_fragment_element(skb, subelem_len,
+ IEEE80211_MLE_SUBELEM_FRAGMENT);
}

- ieee80211_fragment_element(skb, ml_elem_len);
+ ieee80211_fragment_element(skb, ml_elem_len, WLAN_EID_FRAGMENT);
}

static int ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 3aa363bdb6e0..2fc07717bcad 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -5128,7 +5128,7 @@ u8 *ieee80211_ie_build_eht_cap(u8 *pos,
return pos;
}

-void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos)
+void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos, u8 frag_id)
{
unsigned int elem_len;

@@ -5148,7 +5148,7 @@ void ieee80211_fragment_element(struct sk_buff *skb, u8 *len_pos)
memmove(len_pos + 255 + 3, len_pos + 255 + 1, elem_len);
/* place the fragment ID */
len_pos += 255 + 1;
- *len_pos = WLAN_EID_FRAGMENT;
+ *len_pos = frag_id;
/* and point to fragment length to update later */
len_pos++;
}
--
2.38.1