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374920cb05
When filling out its rate scale table, iwlwifi repeats the first HT rate IWL_HT_NUMBER_TRY times. The hardware scheduler will stop using aggregation for any frame that fails LINK_QUAL_AGG_DISABLE_START_DEF times. Currently, both these constants equal 3. If iwlwifi probes a faster rate than the link supports, all frames in a (potentially tens of frames large) batch will fail IWL_HT_NUMBER_TRY times. Because this happens to be as large as LINK_QUAL_AGG_DISABLE_START_DEF, all frames will then be sent individually. This leads to a short, but performance-degrading window where the legacy stop-and-wait MAC takes over. Bounding the initial rate by (LINK_QUAL_AGG_DISABLE_START_DEF-1) attempts makes the third try use a lower rate and hence more be likely to succeed. This somewhat mitigates the above described behavior. Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> |
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| .. | ||
| ath | ||
| b43 | ||
| b43legacy | ||
| hostap | ||
| ipw2x00 | ||
| iwlegacy | ||
| iwlwifi | ||
| iwmc3200wifi | ||
| libertas | ||
| libertas_tf | ||
| orinoco | ||
| p54 | ||
| prism54 | ||
| rt2x00 | ||
| rtl818x | ||
| rtlwifi | ||
| wl12xx | ||
| wl1251 | ||
| zd1211rw | ||
| adm8211.c | ||
| adm8211.h | ||
| airo_cs.c | ||
| airo.c | ||
| airo.h | ||
| at76c50x-usb.c | ||
| at76c50x-usb.h | ||
| atmel_cs.c | ||
| atmel_pci.c | ||
| atmel.c | ||
| atmel.h | ||
| Kconfig | ||
| mac80211_hwsim.c | ||
| Makefile | ||
| mwl8k.c | ||
| ray_cs.c | ||
| ray_cs.h | ||
| rayctl.h | ||
| rndis_wlan.c | ||
| wl3501_cs.c | ||
| wl3501.h | ||
| zd1201.c | ||
| zd1201.h | ||