FreeBSD src
534f8ec8b2
This commit really is "fix the OFDM duration calculation to match reality when running in 802.11g mode." The AR5212 init vals set AR_MISC_MODE to 0x0 and all the bits that can be set are set through code. The AR5416 and later initvals set AR_MISC_MODE to various other values (with the AR5212 AR_MISC_MODE options cleared), which include AR_PCU_CCK_SIFS_MODE . This adds 6uS to SIFS on non-CCK frames when transmitting. This fixes the issue where _DATA_ 802.11g OFDM frames were being TX'ed with the ACK duration set to 38uS, not 44uS as on the AR5212 (and other devices.) The AR5212 TX pathway obeys the software-programmed duration field in the packet, but the 11n TX pathway overrides that with a hardware-calculated duration. This was getting it wrong because of the above AR_MISC_MODE setting. I've verified that 11g data OFDM frames are now being TXed with the correct ACK+SIFS duration programmed in. |
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| bin | ||
| cddl | ||
| contrib | ||
| crypto | ||
| etc | ||
| games | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| lib | ||
| libexec | ||
| release | ||
| rescue | ||
| sbin | ||
| secure | ||
| share | ||
| sys | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| COPYRIGHT | ||
| LOCKS | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| Makefile.mips | ||
| ObsoleteFiles.inc | ||
| README | ||
| UPDATING | ||
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