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[net80211] begin laying the groundwork for drivers to do their own sequence number management.

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I added IEEE80211_TX_LOCK() a few years ago because there were races between
seqno allocation, driver queuing and crypto IV allocation.  This meant that
they'd appear out of sequence and the receiver would drop them, leading to
terrible performance or flat out traffic hangs.

This flag should be set by drivers that do their own sequence number
allocation for all frames it needs to happen for, including beacon frames.

Eventually this should lead to the driver taking care of locking for
allocating seqno and other traffic-triggered events (eg addba setup.)
This commit is contained in:
Adrian Chadd 2017-01-13 07:08:14 +00:00
parent 51172f62a7
commit 321eb9ffbe
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=312016
1 changed files with 2 additions and 1 deletions
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3
sys/net80211/ieee80211_var.h
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@ -629,11 +629,12 @@ MALLOC_DECLARE(M_80211_VAP);
#define IEEE80211_FEXT_PROBECHAN 0x00020000 /* CONF: probe passive channel*/
#define IEEE80211_FEXT_UNIQMAC 0x00040000 /* CONF: user or computed mac */
#define IEEE80211_FEXT_SCAN_OFFLOAD 0x00080000 /* CONF: scan is fully offloaded */
#define IEEE80211_FEXT_SEQNO_OFFLOAD 0x00100000 /* CONF: driver does seqno insertion/allocation */
#define IEEE80211_FEXT_BITS \
"\20\2INACT\3SCANWAIT\4BGSCAN\5WPS\6TSN\7SCANREQ\10RESUME" \
"\0114ADDR\12NONEPR_PR\13SWBMISS\14DFS\15DOTD\16STATEWAIT\17REINIT" \
"\20BPF\21WDSLEGACY\22PROBECHAN\23UNIQMAC\24SCAN_OFFLOAD"
"\20BPF\21WDSLEGACY\22PROBECHAN\23UNIQMAC\24SCAN_OFFLOAD\25SEQNO_OFFLOAD"
/* ic_flags_ht/iv_flags_ht */
#define IEEE80211_FHT_NONHT_PR 0x00000001 /* STATUS: non-HT sta present */