Author: sam
Date: Mon Apr 27 17:39:41 2009
New Revision: 191571
URL: http://svn.freebsd.org/changeset/base/191571
Log:
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
Modified:
head/sys/net80211/ieee80211_freebsd.h
head/sys/net80211/ieee80211_output.c
Modified: head/sys/net80211/ieee80211_freebsd.h
==============================================================================
--- head/sys/net80211/ieee80211_freebsd.h Mon Apr 27 17:37:36 2009
(r191570)
+++ head/sys/net80211/ieee80211_freebsd.h Mon Apr 27 17:39:41 2009
(r191571)
@@ -248,6 +248,13 @@ struct mbuf *ieee80211_getmgtframe(uint8
#define M_AGE_GET(m) (m->m_pkthdr.csum_data)
#define M_AGE_SUB(m,adj) (m->m_pkthdr.csum_data -= adj)
+/*
+ * Store the sequence number.
+ */
+#define M_SEQNO_SET(m, seqno) \
+ ((m)->m_pkthdr.tso_segsz = (seqno))
+#define M_SEQNO_GET(m) ((m)->m_pkthdr.tso_segsz)
+
#define MTAG_ABI_NET80211 1132948340 /* net80211 ABI */
struct ieee80211_cb {
Modified: head/sys/net80211/ieee80211_output.c
==============================================================================
--- head/sys/net80211/ieee80211_output.c Mon Apr 27 17:37:36 2009
(r191570)
+++ head/sys/net80211/ieee80211_output.c Mon Apr 27 17:39:41 2009
(r191571)
@@ -512,6 +512,7 @@ ieee80211_send_setup(
seqno = ni->ni_txseqs[tid]++;
*(uint16_t *)&wh->i_seq[0] = htole16(seqno << IEEE80211_SEQ_SEQ_SHIFT);
+ M_SEQNO_SET(m, seqno);
if (IEEE80211_IS_MULTICAST(wh->i_addr1))
m->m_flags |= M_MCAST;
@@ -1097,12 +1098,15 @@ ieee80211_encap(struct ieee80211vap *vap
seqno = ni->ni_txseqs[tid]++;
*(uint16_t *)wh->i_seq =
htole16(seqno << IEEE80211_SEQ_SEQ_SHIFT);
+ M_SEQNO_SET(m, seqno);
}
} else {
seqno = ni->ni_txseqs[IEEE80211_NONQOS_TID]++;
*(uint16_t *)wh->i_seq =
htole16(seqno << IEEE80211_SEQ_SEQ_SHIFT);
+ M_SEQNO_SET(m, seqno);
}
+
/* check if xmit fragmentation is required */
txfrag = (m->m_pkthdr.len > vap->iv_fragthreshold &&
!IEEE80211_IS_MULTICAST(wh->i_addr1) &&
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