Author: adrian Date: Wed Oct 19 05:03:46 2016 New Revision: 307602 URL: https://svnweb.freebsd.org/changeset/base/307602
Log: [net80211] Initial full-offload scan support. This is a very simple addition to the net80211 scan support. It doesn't implement a replacement scan interface - it just disables the pieces that we should disable to make this lifecycle a bit more managable. There's more work to come before full scan offload support is available but it should be good enough for driver work. * add a flag to say "full offload" * don't do probe requests when scanning full-offload - firmware can do that * don't do powersave transitions and buffering - firmware can do that tested: * iwm(4) - STA mode * ath10k port (local, not in freebsd-head yet) Reviewed by: avos Differential Revision: https://reviews.freebsd.org/D8262 Modified: head/sys/net80211/ieee80211_scan_sw.c head/sys/net80211/ieee80211_var.h Modified: head/sys/net80211/ieee80211_scan_sw.c ============================================================================== --- head/sys/net80211/ieee80211_scan_sw.c Wed Oct 19 02:39:24 2016 (r307601) +++ head/sys/net80211/ieee80211_scan_sw.c Wed Oct 19 05:03:46 2016 (r307602) @@ -412,6 +412,12 @@ ieee80211_swscan_bg_scan(const struct ie return (ic->ic_flags & IEEE80211_F_SCAN); } +/* + * Taskqueue work to cancel a scan. + * + * Note: for offload scan devices, we may want to call into the + * driver to try and cancel scanning, however it may not be cancelable. + */ static void cancel_scan(struct ieee80211vap *vap, int any, const char *func) { @@ -512,6 +518,12 @@ ieee80211_swscan_probe_curchan(struct ie int i; /* + * Full-offload scan devices don't require this. + */ + if (vap->iv_flags_ext & IEEE80211_FEXT_SCAN_OFFLOAD) + return; + + /* * Send directed probe requests followed by any * broadcast probe request. * XXX remove dependence on ic/vap->iv_bss @@ -617,7 +629,14 @@ scan_start(void *arg, int pending) return; } - if (vap->iv_opmode == IEEE80211_M_STA && + /* + * Put the station into power save mode. + * + * This is only required if we're not a full-offload devices; + * those devices manage scan/traffic differently. + */ + if (((vap->iv_flags_ext & IEEE80211_FEXT_SCAN_OFFLOAD) == 0) && + vap->iv_opmode == IEEE80211_M_STA && vap->iv_state == IEEE80211_S_RUN) { if ((vap->iv_bss->ni_flags & IEEE80211_NODE_PWR_MGT) == 0) { /* Enable station power save mode */ @@ -870,7 +889,12 @@ scan_done(struct ieee80211_scan_state *s * waiting for us. */ if (scandone) { - vap->iv_sta_ps(vap, 0); + /* + * If we're not a scan offload device, come back out of + * station powersave. Offload devices handle this themselves. + */ + if ((vap->iv_flags_ext & IEEE80211_FEXT_SCAN_OFFLOAD) == 0) + vap->iv_sta_ps(vap, 0); if (ss->ss_next >= ss->ss_last) ic->ic_flags_ext &= ~IEEE80211_FEXT_BGSCAN; Modified: head/sys/net80211/ieee80211_var.h ============================================================================== --- head/sys/net80211/ieee80211_var.h Wed Oct 19 02:39:24 2016 (r307601) +++ head/sys/net80211/ieee80211_var.h Wed Oct 19 05:03:46 2016 (r307602) @@ -601,11 +601,12 @@ MALLOC_DECLARE(M_80211_VAP); #define IEEE80211_FEXT_WDSLEGACY 0x00010000 /* CONF: legacy WDS operation */ #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_BITS \ "\20\2INACT\3SCANWAIT\4BGSCAN\5WPS\6TSN\7SCANREQ\10RESUME" \ "\0114ADDR\12NONEPR_PR\13SWBMISS\14DFS\15DOTD\16STATEWAIT\17REINIT" \ - "\20BPF\21WDSLEGACY\22PROBECHAN\23UNIQMAC" + "\20BPF\21WDSLEGACY\22PROBECHAN\23UNIQMAC\24SCAN_OFFLOAD" /* ic_flags_ht/iv_flags_ht */ #define IEEE80211_FHT_NONHT_PR 0x00000001 /* STATUS: non-HT sta present */ _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
