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diff --git a/sys/dev/rtwn/if_rtwn.c b/sys/dev/rtwn/if_rtwn.c
--- a/sys/dev/rtwn/if_rtwn.c
+++ b/sys/dev/rtwn/if_rtwn.c
@@ -268,6 +268,9 @@
ic->ic_flags_ext |= IEEE80211_FEXT_WATCHDOG;
#endif
+ /* Enable seqno offload */
+ ic->ic_flags_ext |= IEEE80211_FEXT_SEQNO_OFFLOAD;
+
/* Adjust capabilities. */
rtwn_adj_devcaps(sc);
diff --git a/sys/dev/rtwn/if_rtwn_tx.c b/sys/dev/rtwn/if_rtwn_tx.c
--- a/sys/dev/rtwn/if_rtwn_tx.c
+++ b/sys/dev/rtwn/if_rtwn_tx.c
@@ -183,6 +183,10 @@
}
}
+ /* seqno allocate, only if AMPDU isn't running */
+ if ((m->m_flags & M_AMPDU_MPDU) == 0)
+ ieee80211_output_seqno_assign(ni, -1, m);
+
cipher = IEEE80211_CIPHER_NONE;
if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
k = ieee80211_crypto_encap(ni, m);
@@ -229,6 +233,10 @@
uint8_t type;
u_int cipher;
+ /* seqno allocate, only if AMPDU isn't running */
+ if ((m->m_flags & M_AMPDU_MPDU) == 0)
+ ieee80211_output_seqno_assign(ni, -1, m);
+
/* Encrypt the frame if need be. */
cipher = IEEE80211_CIPHER_NONE;
if (params->ibp_flags & IEEE80211_BPF_CRYPTO) {
diff --git a/sys/dev/rtwn/rtl8192c/r92c_tx.c b/sys/dev/rtwn/rtl8192c/r92c_tx.c
--- a/sys/dev/rtwn/rtl8192c/r92c_tx.c
+++ b/sys/dev/rtwn/rtl8192c/r92c_tx.c
@@ -452,6 +452,8 @@
} else {
uint16_t seqno;
+ /* TODO: seqno allocate through net80211? */
+ /* TODO: what to do about QoS NULL frames? */
if (m->m_flags & M_AMPDU_MPDU) {
seqno = ni->ni_txseqs[tid] % IEEE80211_SEQ_RANGE;
ni->ni_txseqs[tid]++;
diff --git a/sys/dev/rtwn/rtl8812a/r12a_tx.c b/sys/dev/rtwn/rtl8812a/r12a_tx.c
--- a/sys/dev/rtwn/rtl8812a/r12a_tx.c
+++ b/sys/dev/rtwn/rtl8812a/r12a_tx.c
@@ -433,6 +433,8 @@
} else {
uint16_t seqno;
+ /* TODO: seqno allocate through net80211? */
+ /* TODO: what to do about QoS NULL frames? */
if (m->m_flags & M_AMPDU_MPDU) {
seqno = ni->ni_txseqs[tid];
ni->ni_txseqs[tid]++;

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