diff options
Diffstat (limited to 'package/madwifi/patches/416-wprobe.patch')
| -rw-r--r-- | package/madwifi/patches/416-wprobe.patch | 549 |
1 files changed, 549 insertions, 0 deletions
diff --git a/package/madwifi/patches/416-wprobe.patch b/package/madwifi/patches/416-wprobe.patch new file mode 100644 index 000000000..0b378d7e2 --- /dev/null +++ b/package/madwifi/patches/416-wprobe.patch @@ -0,0 +1,549 @@ +--- /dev/null ++++ b/ath/ath_wprobe.c +@@ -0,0 +1,433 @@ ++#include <net80211/ieee80211_node.h> ++#include <linux/wprobe.h> ++ ++atomic_t cleanup_tasks = ATOMIC_INIT(0); ++ ++enum wp_node_val { ++ WP_NODE_RSSI, ++ WP_NODE_SIGNAL, ++ WP_NODE_RX_RATE, ++ WP_NODE_TX_RATE, ++ WP_NODE_RETRANSMIT_200, ++ WP_NODE_RETRANSMIT_400, ++ WP_NODE_RETRANSMIT_800, ++ WP_NODE_RETRANSMIT_1600, ++}; ++ ++enum wp_global_val { ++ WP_GLOBAL_NOISE, ++ WP_GLOBAL_PHY_BUSY, ++ WP_GLOBAL_PHY_RX, ++ WP_GLOBAL_PHY_TX, ++ WP_GLOBAL_FRAMES, ++ WP_GLOBAL_PROBEREQ, ++}; ++ ++static struct wprobe_item ath_wprobe_globals[] = { ++ [WP_GLOBAL_NOISE] = { ++ .name = "noise", ++ .type = WPROBE_VAL_S16, ++ .flags = WPROBE_F_KEEPSTAT ++ }, ++ [WP_GLOBAL_PHY_BUSY] = { ++ .name = "phy_busy", ++ .type = WPROBE_VAL_U8, ++ .flags = WPROBE_F_KEEPSTAT ++ }, ++ [WP_GLOBAL_PHY_RX] = { ++ .name = "phy_rx", ++ .type = WPROBE_VAL_U8, ++ .flags = WPROBE_F_KEEPSTAT ++ }, ++ [WP_GLOBAL_PHY_TX] = { ++ .name = "phy_tx", ++ .type = WPROBE_VAL_U8, ++ .flags = WPROBE_F_KEEPSTAT ++ }, ++ [WP_GLOBAL_FRAMES] = { ++ .name = "frames", ++ .type = WPROBE_VAL_U32, ++ }, ++ [WP_GLOBAL_PROBEREQ] = { ++ .name = "probereq", ++ .type = WPROBE_VAL_U32, ++ }, ++}; ++ ++static struct wprobe_item ath_wprobe_link[] = { ++ [WP_NODE_RSSI] = { ++ .name = "rssi", ++ .type = WPROBE_VAL_U8, ++ .flags = WPROBE_F_KEEPSTAT ++ }, ++ [WP_NODE_SIGNAL] = { ++ .name = "signal", ++ .type = WPROBE_VAL_S16, ++ .flags = WPROBE_F_KEEPSTAT ++ }, ++ [WP_NODE_RX_RATE] = { ++ .name = "rx_rate", ++ .type = WPROBE_VAL_U16, ++ .flags = WPROBE_F_KEEPSTAT ++ }, ++ [WP_NODE_TX_RATE] = { ++ .name = "tx_rate", ++ .type = WPROBE_VAL_U16, ++ .flags = WPROBE_F_KEEPSTAT ++ }, ++ [WP_NODE_RETRANSMIT_200] = { ++ .name = "retransmit_200", ++ .type = WPROBE_VAL_U8, ++ .flags = WPROBE_F_KEEPSTAT ++ }, ++ [WP_NODE_RETRANSMIT_400] = { ++ .name = "retransmit_400", ++ .type = WPROBE_VAL_U8, ++ .flags = WPROBE_F_KEEPSTAT ++ }, ++ [WP_NODE_RETRANSMIT_800] = { ++ .name = "retransmit_800", ++ .type = WPROBE_VAL_U8, ++ .flags = WPROBE_F_KEEPSTAT ++ }, ++ [WP_NODE_RETRANSMIT_1600] = { ++ .name = "retransmit_1600", ++ .type = WPROBE_VAL_U8, ++ .flags = WPROBE_F_KEEPSTAT ++ }, ++}; ++ ++#define AR5K_MIBC 0x0040 ++#define AR5K_MIBC_FREEZE (1 << 1) ++#define AR5K_TXFC 0x80ec ++#define AR5K_RXFC 0x80f0 ++#define AR5K_RXCLEAR 0x80f4 ++#define AR5K_CYCLES 0x80f8 ++ ++#define READ_CLR(_ah, _reg) \ ++ ({ u32 __val = OS_REG_READ(_ah, _reg); OS_REG_WRITE(_ah, _reg, 0); __val; }) ++ ++static bool ++wprobe_disabled(void) ++{ ++ return (!wprobe_add_iface || IS_ERR(wprobe_add_iface)); ++} ++ ++static int ++ath_wprobe_sync(struct wprobe_iface *dev, struct wprobe_link *l, struct wprobe_value *val, bool measure) ++{ ++ struct ath_vap *avp = container_of(dev, struct ath_vap, av_wpif); ++ struct ieee80211vap *vap = &avp->av_vap; ++ struct ieee80211com *ic = vap->iv_ic; ++ struct ath_softc *sc = ic->ic_dev->priv; ++ struct ath_hal *ah = sc->sc_ah; ++ u32 cc, busy, rx, tx; ++ s16 noise; ++ ++ if (l) ++ goto out; ++ ++ OS_REG_WRITE(ah, AR5K_MIBC, AR5K_MIBC_FREEZE); ++ cc = READ_CLR(ah, AR5K_CYCLES); ++ busy = READ_CLR(ah, AR5K_RXCLEAR); ++ rx = READ_CLR(ah, AR5K_RXFC); ++ tx = READ_CLR(ah, AR5K_TXFC); ++ OS_REG_WRITE(ah, AR5K_MIBC, 0); ++ noise = ath_hal_get_channel_noise(sc->sc_ah, &(sc->sc_curchan)); ++ ic->ic_channoise = noise; ++ ++ WPROBE_FILL_BEGIN(val, ath_wprobe_globals); ++ if (cc & 0xf0000000) { ++ /* scale down if the counters are near max */ ++ cc >>= 8; ++ busy >>= 8; ++ rx >>= 8; ++ tx >>= 8; ++ } ++ if (ah->ah_macType < 5212) ++ goto phy_skip; ++ if (!cc) ++ goto phy_skip; ++ if (busy > cc) ++ goto phy_skip; ++ if (rx > cc) ++ goto phy_skip; ++ if (tx > cc) ++ goto phy_skip; ++ busy = (busy * 100) / cc; ++ rx = (rx * 100) / cc; ++ tx = (tx * 100) / cc; ++ WPROBE_SET(WP_GLOBAL_PHY_BUSY, U8, busy); ++ WPROBE_SET(WP_GLOBAL_PHY_RX, U8, rx); ++ WPROBE_SET(WP_GLOBAL_PHY_TX, U8, tx); ++ WPROBE_SET(WP_GLOBAL_FRAMES, U32, avp->av_rxframes); ++ WPROBE_SET(WP_GLOBAL_PROBEREQ, U32, avp->av_rxprobereq); ++ ++phy_skip: ++ WPROBE_SET(WP_GLOBAL_NOISE, S16, noise); ++ WPROBE_FILL_END(); ++ ++out: ++ return 0; ++} ++ ++#undef AR5K_TXFC ++#undef AR5K_RXFC ++#undef AR5K_RXCLEAR ++#undef AR5K_CYCLES ++#undef AR5K_MIBC ++#undef AR5K_MIBC_FREEZE ++#undef READ_CLR ++ ++static const struct wprobe_iface ath_wprobe_dev = { ++ .link_items = ath_wprobe_link, ++ .n_link_items = ARRAY_SIZE(ath_wprobe_link), ++ .global_items = ath_wprobe_globals, ++ .n_global_items = ARRAY_SIZE(ath_wprobe_globals), ++ .sync_data = ath_wprobe_sync, ++}; ++ ++static int ++ath_lookup_rateval(struct ieee80211_node *ni, int rate) ++{ ++ struct ieee80211vap *vap = ni->ni_vap; ++ struct ieee80211com *ic = vap->iv_ic; ++ struct ath_softc *sc = ic->ic_dev->priv; ++ const HAL_RATE_TABLE *rt = sc->sc_currates; ++ ++ if ((!rt) || (rate < 0) || (rate >= ARRAY_SIZE(sc->sc_hwmap))) ++ return -1; ++ ++ rate = sc->sc_hwmap[rate].ieeerate; ++ rate = sc->sc_rixmap[rate & IEEE80211_RATE_VAL]; ++ if ((rate < 0) || (rate >= rt->rateCount)) ++ return -1; ++ ++ return rt->info[rate].rateKbps; ++} ++ ++static void ++ath_wprobe_report_rx(struct ieee80211vap *vap, struct ath_rx_status *rs, struct sk_buff *skb) ++{ ++ const struct ieee80211_frame *wh = (struct ieee80211_frame *)skb->data; ++ struct wprobe_wlan_hdr hdr; ++ struct ath_vap *avp; ++ int hdrsize; ++ ++ if (wprobe_disabled()) ++ return; ++ ++ avp = ATH_VAP(vap); ++ avp->av_rxframes++; ++ if (wh->i_fc[0] == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ)) ++ avp->av_rxprobereq++; ++ ++ memset(&hdr, 0, sizeof(hdr)); ++ hdr.len = skb->len; ++ hdr.snr = rs->rs_rssi; ++ hdr.type = WPROBE_PKT_RX; ++ if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL) ++ hdrsize = sizeof(struct ieee80211_ctlframe_addr2); ++ else ++ hdrsize = ieee80211_hdrsize(skb->data); ++ wprobe_add_frame(&avp->av_wpif, &hdr, skb->data, hdrsize + 0x42); ++} ++ ++ ++static void ++ath_node_sample_rx(struct ieee80211_node *ni, struct ath_rx_status *rs) ++{ ++ struct ath_node *an = ATH_NODE(ni); ++ struct ieee80211vap *vap = ni->ni_vap; ++ struct ieee80211com *ic = vap->iv_ic; ++ struct wprobe_link *l = &an->an_wplink; ++ struct wprobe_value *v = l->val; ++ unsigned long flags; ++ int rate; ++ ++ if (wprobe_disabled() || !an->an_wplink_active || !l->val) ++ return; ++ ++ rate = ath_lookup_rateval(ni, rs->rs_rate); ++ ++ spin_lock_irqsave(&l->iface->lock, flags); ++ WPROBE_FILL_BEGIN(v, ath_wprobe_link); ++ WPROBE_SET(WP_NODE_RSSI, U8, rs->rs_rssi); ++ WPROBE_SET(WP_NODE_SIGNAL, S16, ic->ic_channoise + rs->rs_rssi); ++ if ((rate > 0) && (rate <= 600000)) ++ WPROBE_SET(WP_NODE_RX_RATE, U16, rate); ++ WPROBE_FILL_END(); ++ wprobe_update_stats(l->iface, l); ++ spin_unlock_irqrestore(&l->iface->lock, flags); ++} ++ ++static void ++ath_wprobe_report_tx(struct ieee80211vap *vap, struct ath_tx_status *ts, struct sk_buff *skb) ++{ ++ const struct ieee80211_frame *wh = (struct ieee80211_frame *)skb->data; ++ struct wprobe_wlan_hdr hdr; ++ struct ath_vap *avp; ++ int hdrsize; ++ ++ if (wprobe_disabled()) ++ return; ++ ++ avp = ATH_VAP(vap); ++ ++ memset(&hdr, 0, sizeof(hdr)); ++ hdr.len = skb->len; ++ hdr.snr = ts->ts_rssi; ++ hdr.type = WPROBE_PKT_TX; ++ if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL) ++ hdrsize = sizeof(struct ieee80211_ctlframe_addr2); ++ else ++ hdrsize = ieee80211_hdrsize(skb->data); ++ wprobe_add_frame(&avp->av_wpif, &hdr, skb->data, hdrsize + 0x42); ++} ++ ++ ++ ++static void ++ath_node_sample_tx(struct ieee80211_node *ni, struct ath_tx_status *ts, struct sk_buff *skb) ++{ ++ struct ath_node *an = ATH_NODE(ni); ++ struct ieee80211vap *vap = ni->ni_vap; ++ struct ieee80211com *ic = vap->iv_ic; ++ struct wprobe_link *l = &an->an_wplink; ++ struct wprobe_value *v = l->val; ++ unsigned long flags; ++ int rate, rexmit_counter; ++ int len = skb->len; ++ ++ if (wprobe_disabled() || !an->an_wplink_active || !l->val) ++ return; ++ ++ ath_wprobe_report_tx(vap, ts, skb); ++ rate = ath_lookup_rateval(ni, ts->ts_rate); ++ ++ spin_lock_irqsave(&l->iface->lock, flags); ++ WPROBE_FILL_BEGIN(v, ath_wprobe_link); ++ WPROBE_SET(WP_NODE_RSSI, U8, ts->ts_rssi); ++ WPROBE_SET(WP_NODE_SIGNAL, S16, ic->ic_channoise + ts->ts_rssi); ++ ++ if (len <= 200) ++ rexmit_counter = WP_NODE_RETRANSMIT_200; ++ else if (len <= 400) ++ rexmit_counter = WP_NODE_RETRANSMIT_400; ++ else if (len <= 800) ++ rexmit_counter = WP_NODE_RETRANSMIT_800; ++ else ++ rexmit_counter = WP_NODE_RETRANSMIT_1600; ++ WPROBE_SET(rexmit_counter, U8, ts->ts_longretry); ++ ++ if ((rate > 0) && (rate <= 600000)) ++ WPROBE_SET(WP_NODE_TX_RATE, U16, rate); ++ WPROBE_FILL_END(); ++ wprobe_update_stats(l->iface, l); ++ spin_unlock_irqrestore(&l->iface->lock, flags); ++} ++ ++static void ++ath_wprobe_node_join(struct ieee80211vap *vap, struct ieee80211_node *ni) ++{ ++ struct wprobe_iface *dev; ++ struct wprobe_link *l; ++ struct ath_vap *avp; ++ struct ath_node *an = ATH_NODE(ni); ++ ++ if (wprobe_disabled() || an->an_wplink_active) ++ return; ++ ++ avp = ATH_VAP(vap); ++ dev = &avp->av_wpif; ++ l = &an->an_wplink; ++ ++ ieee80211_ref_node(ni); ++ wprobe_add_link(dev, l, ni->ni_macaddr); ++ an->an_wplink_active = 1; ++} ++ ++static void ++ath_wprobe_do_node_leave(struct work_struct *work) ++{ ++ struct ath_node *an = container_of(work, struct ath_node, an_destroy); ++ struct ieee80211_node *ni = &an->an_node; ++ struct ieee80211vap *vap = ni->ni_vap; ++ struct wprobe_iface *dev; ++ struct wprobe_link *l; ++ struct ath_vap *avp; ++ ++ avp = ATH_VAP(vap); ++ dev = &avp->av_wpif; ++ l = &an->an_wplink; ++ ++ wprobe_remove_link(dev, l); ++ ieee80211_unref_node(&ni); ++ atomic_dec(&cleanup_tasks); ++} ++ ++static void ++ath_wprobe_node_leave(struct ieee80211vap *vap, struct ieee80211_node *ni) ++{ ++ struct ath_node *an = ATH_NODE(ni); ++ ++ if (wprobe_disabled() || !an->an_wplink_active) ++ return; ++ ++ atomic_inc(&cleanup_tasks); ++ an->an_wplink_active = 0; ++ IEEE80211_INIT_WORK(&an->an_destroy, ath_wprobe_do_node_leave); ++ schedule_work(&an->an_destroy); ++} ++ ++static void ++ath_init_wprobe_dev(struct ath_vap *avp) ++{ ++ struct ieee80211vap *vap = &avp->av_vap; ++ struct wprobe_iface *dev = &avp->av_wpif; ++ ++ if (wprobe_disabled() || (vap->iv_opmode == IEEE80211_M_WDS)) ++ return; ++ ++ memcpy(dev, &ath_wprobe_dev, sizeof(struct wprobe_iface)); ++ dev->addr = vap->iv_myaddr; ++ dev->name = vap->iv_dev->name; ++ wprobe_add_iface(dev); ++} ++ ++static void ++ath_remove_wprobe_dev(struct ath_vap *avp) ++{ ++ struct ieee80211vap *vap = &avp->av_vap; ++ struct ieee80211com *ic = vap->iv_ic; ++ struct ieee80211_node *ni; ++ struct wprobe_iface *dev = &avp->av_wpif; ++ struct wprobe_link *l; ++ struct ath_node *an; ++ unsigned long flags; ++ ++ if (wprobe_disabled() || (vap->iv_opmode == IEEE80211_M_WDS)) ++ return; ++ ++restart: ++ rcu_read_lock(); ++ list_for_each_entry_rcu(l, &dev->links, list) { ++ an = container_of(l, struct ath_node, an_wplink); ++ ++ if (!an->an_wplink_active) ++ continue; ++ ++ ni = &an->an_node; ++ ath_wprobe_node_leave(vap, ni); ++ rcu_read_unlock(); ++ goto restart; ++ } ++ rcu_read_unlock(); ++ ++ /* wait for the cleanup tasks to finish */ ++ while (atomic_read(&cleanup_tasks) != 0) { ++ schedule(); ++ } ++ ++ wprobe_remove_iface(dev); ++} +--- a/ath/if_ath.c ++++ b/ath/if_ath.c +@@ -400,6 +400,7 @@ static int countrycode = -1; + static int maxvaps = -1; + static int outdoor = -1; + static int xchanmode = -1; ++#include "ath_wprobe.c" + static int beacon_cal = 1; + + static const struct ath_hw_detect generic_hw_info = { +@@ -1525,6 +1526,7 @@ ath_vap_create(struct ieee80211com *ic, + ath_hal_intrset(ah, sc->sc_imask); + } + ++ ath_init_wprobe_dev(avp); + return vap; + } + +@@ -1606,6 +1608,7 @@ ath_vap_delete(struct ieee80211vap *vap) + decrease = 0; + + ieee80211_vap_detach(vap); ++ ath_remove_wprobe_dev(ATH_VAP(vap)); + /* NB: memory is reclaimed through dev->destructor callback */ + if (decrease) + sc->sc_nvaps--; +@@ -5940,6 +5943,7 @@ ath_node_cleanup(struct ieee80211_node * + /* Clean up node-specific rate things - this currently appears to + * always be a no-op */ + sc->sc_rc->ops->node_cleanup(sc, ATH_NODE(ni)); ++ ath_wprobe_node_leave(ni->ni_vap, ni); + + ATH_NODE_UAPSD_LOCK_IRQ(an); + #ifdef IEEE80211_DEBUG_REFCNT +@@ -7010,6 +7014,8 @@ drop_micfail: + goto lookup_slowpath; + } + ATH_RSSI_LPF(ATH_NODE(ni)->an_avgrssi, rs->rs_rssi); ++ ath_node_sample_rx(ni, rs); ++ ath_wprobe_report_rx(ni->ni_vap, rs, skb); + type = ieee80211_input(ni->ni_vap, ni, skb, rs->rs_rssi, bf->bf_tsf); + ieee80211_unref_node(&ni); + } else { +@@ -7024,15 +7030,21 @@ lookup_slowpath: + else + vap = ieee80211_find_rxvap(ic, wh->i_addr1); + +- if (vap) ++ if (vap) { ++ ath_wprobe_report_rx(vap, rs, skb); + ni = ieee80211_find_rxnode(ic, vap, wh); +- else ++ } else { ++ TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) { ++ ath_wprobe_report_rx(vap, rs, skb); ++ } + ni = NULL; ++ } + + if (ni != NULL) { + ieee80211_keyix_t keyix; + + ATH_RSSI_LPF(ATH_NODE(ni)->an_avgrssi, rs->rs_rssi); ++ ath_node_sample_rx(ni, rs); + type = ieee80211_input(vap, ni, skb, rs->rs_rssi, bf->bf_tsf); + /* + * If the station has a key cache slot assigned +@@ -8612,6 +8624,7 @@ ath_tx_processq(struct ath_softc *sc, st + sc->sc_stats.ast_tx_rssi = ts->ts_rssi; + ATH_RSSI_LPF(an->an_halstats.ns_avgtxrssi, + ts->ts_rssi); ++ ath_node_sample_tx(&an->an_node, ts, bf->bf_skb); + if (bf->bf_skb->priority == WME_AC_VO || + bf->bf_skb->priority == WME_AC_VI) + ni->ni_ic->ic_wme.wme_hipri_traffic++; +@@ -10111,6 +10124,7 @@ ath_newassoc(struct ieee80211_node *ni, + struct ath_softc *sc = ic->ic_dev->priv; + + sc->sc_rc->ops->newassoc(sc, ATH_NODE(ni), isnew); ++ ath_wprobe_node_join(ni->ni_vap, ni); + + /* are we supporting compression? */ + if (!(vap->iv_ath_cap & ni->ni_ath_flags & IEEE80211_NODE_COMP)) +--- a/ath/if_athvar.h ++++ b/ath/if_athvar.h +@@ -46,6 +46,7 @@ + #include "ah_desc.h" + #include "ah_os.h" + #include "if_athioctl.h" ++#include <linux/wprobe.h> + #include "net80211/ieee80211.h" /* XXX for WME_NUM_AC */ + #include <asm/io.h> + #include <linux/list.h> +@@ -352,6 +353,9 @@ typedef STAILQ_HEAD(, ath_buf) ath_bufhe + /* driver-specific node state */ + struct ath_node { + struct ieee80211_node an_node; /* base class */ ++ struct wprobe_link an_wplink; ++ uint8_t an_wplink_active; ++ struct work_struct an_destroy; + u_int16_t an_decomp_index; /* decompression mask index */ + u_int32_t an_avgrssi; /* average rssi over all rx frames */ + u_int8_t an_prevdatarix; /* rate ix of last data frame */ +@@ -521,6 +525,9 @@ struct ath_vap { + #else + unsigned int av_beacon_alloc; + #endif ++ struct wprobe_iface av_wpif; ++ u32 av_rxframes; ++ u32 av_rxprobereq; + }; + #define ATH_VAP(_v) ((struct ath_vap *)(_v)) + |