Date: Tue, 17 May 2016 21:24:10 +0000 (UTC) From: Adrian Chadd <adrian@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r300079 - head/sys/dev/bwn Message-ID: <201605172124.u4HLOAYN092983@repo.freebsd.org>
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Author: adrian Date: Tue May 17 21:24:10 2016 New Revision: 300079 URL: https://svnweb.freebsd.org/changeset/base/300079 Log: [bwn] correctly calculate RSSI level. Tested: * BCM4311, PHY-G, STA mode * BCM4312, PHY-LP, STA mode * BCM4321, PHY-N, STA moe Modified: head/sys/dev/bwn/if_bwn.c Modified: head/sys/dev/bwn/if_bwn.c ============================================================================== --- head/sys/dev/bwn/if_bwn.c Tue May 17 21:23:13 2016 (r300078) +++ head/sys/dev/bwn/if_bwn.c Tue May 17 21:24:10 2016 (r300079) @@ -5770,13 +5770,25 @@ bwn_rxeof(struct bwn_mac *mac, struct mb rssi = max(rxhdr->phy.n.power1, rxhdr->ps2.n.power2); else rssi = max(rxhdr->phy.n.power0, rxhdr->phy.n.power1); +#if 0 + DPRINTF(mac->mac_sc, BWN_DEBUG_RECV, + "%s: power0=%d, power1=%d, power2=%d\n", + __func__, + rxhdr->phy.n.power0, + rxhdr->phy.n.power1, + rxhdr->ps2.n.power2); +#endif break; default: /* XXX TODO: implement rssi for other PHYs */ break; } + /* + * RSSI here is absolute, not relative to the noise floor. + */ noise = mac->mac_stats.link_noise; + rssi = rssi - noise; /* RX radio tap */ if (ieee80211_radiotap_active(ic))
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