iwlwifi: mvm: allow to limit the A-MSDU from debugfs
in order to be able to tune the size of the desired A-MSDU
based on link condition, add a knob to modify the length
of the A-MSDU.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
index ff08b17..a5a55da1 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c
@@ -448,6 +448,7 @@
bool ipv4 = (skb->protocol == htons(ETH_P_IP));
u16 ip_base_id = ipv4 ? ntohs(ip_hdr(skb)->id) : 0;
u16 amsdu_add, snap_ip_tcp, pad, i = 0;
+ unsigned int dbg_max_amsdu_len;
u8 *qc, tid;
snap_ip_tcp = 8 + skb_transport_header(skb) - skb_network_header(skb) +
@@ -477,6 +478,10 @@
}
max_amsdu_len = sta->max_amsdu_len;
+ dbg_max_amsdu_len = ACCESS_ONCE(mvm->max_amsdu_len);
+ if (dbg_max_amsdu_len)
+ max_amsdu_len = min_t(unsigned int, max_amsdu_len,
+ dbg_max_amsdu_len);
/*
* Limit A-MSDU in A-MPDU to 4095 bytes when VHT is not