| 159 | } |
| 160 | |
| 161 | static void |
| 162 | amrr_node_init(struct ieee80211_node *ni) |
| 163 | { |
| 164 | const struct ieee80211_rateset *rs = NULL; |
| 165 | struct ieee80211vap *vap = ni->ni_vap; |
| 166 | struct ieee80211_amrr *amrr = vap->iv_rs; |
| 167 | struct ieee80211_amrr_node *amn; |
| 168 | uint8_t rate; |
| 169 | |
| 170 | if (!amrr) { |
| 171 | if_printf(vap->iv_ifp, "ratectl structure was not allocated, " |
| 172 | "per-node structure allocation skipped\n"); |
| 173 | return; |
| 174 | } |
| 175 | |
| 176 | if (ni->ni_rctls == NULL) { |
| 177 | ni->ni_rctls = amn = IEEE80211_MALLOC(sizeof(struct ieee80211_amrr_node), |
| 178 | M_80211_RATECTL, IEEE80211_M_NOWAIT | IEEE80211_M_ZERO); |
| 179 | if (amn == NULL) { |
| 180 | if_printf(vap->iv_ifp, "couldn't alloc per-node ratectl " |
| 181 | "structure\n"); |
| 182 | return; |
| 183 | } |
| 184 | } else |
| 185 | amn = ni->ni_rctls; |
| 186 | amn->amn_amrr = amrr; |
| 187 | amn->amn_success = 0; |
| 188 | amn->amn_recovery = 0; |
| 189 | amn->amn_txcnt = amn->amn_retrycnt = 0; |
| 190 | amn->amn_success_threshold = amrr->amrr_min_success_threshold; |
| 191 | |
| 192 | /* 11n or not? Pick the right rateset */ |
| 193 | if (amrr_node_is_11n(ni)) { |
| 194 | /* XXX ew */ |
| 195 | IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, |
| 196 | "%s: 11n node", __func__); |
| 197 | rs = (struct ieee80211_rateset *) &ni->ni_htrates; |
| 198 | } else { |
| 199 | IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_RATECTL, ni, |
| 200 | "%s: non-11n node", __func__); |
| 201 | rs = &ni->ni_rates; |
| 202 | } |
| 203 | |
| 204 | /* Initial rate - lowest */ |
| 205 | rate = rs->rs_rates[0]; |
| 206 | |
| 207 | /* XXX clear the basic rate flag if it's not 11n */ |
| 208 | if (! amrr_node_is_11n(ni)) |
| 209 | rate &= IEEE80211_RATE_VAL; |
| 210 | |
| 211 | /* pick initial rate from the rateset - HT or otherwise */ |
| 212 | /* Pick something low that's likely to succeed */ |
| 213 | for (amn->amn_rix = rs->rs_nrates - 1; amn->amn_rix > 0; |
| 214 | amn->amn_rix--) { |
| 215 | /* legacy - anything < 36mbit, stop searching */ |
| 216 | /* 11n - stop at MCS4 */ |
| 217 | if (amrr_node_is_11n(ni)) { |
| 218 | if ((rs->rs_rates[amn->amn_rix] & 0x1f) < 4) |
nothing calls this directly
no test coverage detected