Store the tx seq# of an 802.11 frame in the mbuf pkthdr; this will be
used for s/w retransmit schemes that want to access this information w/o the overhead of decoding the raw frame. Note this also allows drivers to record this information w/o writing the frame when the seq# is obtained through an out-of-band mechanism (e.g. when a h/w assigned seq# is reported in a descriptor on tx done notification). Reviewed by: sephe, avatar
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=191571
@ -248,6 +248,13 @@ struct mbuf *ieee80211_getmgtframe(uint8_t **frm, int headroom, int pktlen);
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#define M_AGE_GET(m) (m->m_pkthdr.csum_data)
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#define M_AGE_SUB(m,adj) (m->m_pkthdr.csum_data -= adj)
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/*
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* Store the sequence number.
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*/
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#define M_SEQNO_SET(m, seqno) \
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((m)->m_pkthdr.tso_segsz = (seqno))
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#define M_SEQNO_GET(m) ((m)->m_pkthdr.tso_segsz)
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#define MTAG_ABI_NET80211 1132948340 /* net80211 ABI */
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struct ieee80211_cb {
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@ -512,6 +512,7 @@ ieee80211_send_setup(
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seqno = ni->ni_txseqs[tid]++;
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*(uint16_t *)&wh->i_seq[0] = htole16(seqno << IEEE80211_SEQ_SEQ_SHIFT);
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M_SEQNO_SET(m, seqno);
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if (IEEE80211_IS_MULTICAST(wh->i_addr1))
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m->m_flags |= M_MCAST;
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@ -1097,12 +1098,15 @@ ieee80211_encap(struct ieee80211vap *vap, struct ieee80211_node *ni,
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seqno = ni->ni_txseqs[tid]++;
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*(uint16_t *)wh->i_seq =
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htole16(seqno << IEEE80211_SEQ_SEQ_SHIFT);
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M_SEQNO_SET(m, seqno);
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}
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} else {
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seqno = ni->ni_txseqs[IEEE80211_NONQOS_TID]++;
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*(uint16_t *)wh->i_seq =
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htole16(seqno << IEEE80211_SEQ_SEQ_SHIFT);
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M_SEQNO_SET(m, seqno);
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}
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/* check if xmit fragmentation is required */
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txfrag = (m->m_pkthdr.len > vap->iv_fragthreshold &&
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!IEEE80211_IS_MULTICAST(wh->i_addr1) &&
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