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550 lines
14 KiB
Diff
550 lines
14 KiB
Diff
--- /dev/null
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+++ b/ath/ath_wprobe.c
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@@ -0,0 +1,433 @@
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+#include <net80211/ieee80211_node.h>
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+#include <linux/wprobe.h>
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+
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+atomic_t cleanup_tasks = ATOMIC_INIT(0);
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+
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+enum wp_node_val {
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+ WP_NODE_RSSI,
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+ WP_NODE_SIGNAL,
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+ WP_NODE_RX_RATE,
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+ WP_NODE_TX_RATE,
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+ WP_NODE_RETRANSMIT_200,
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+ WP_NODE_RETRANSMIT_400,
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+ WP_NODE_RETRANSMIT_800,
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+ WP_NODE_RETRANSMIT_1600,
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+};
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+
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+enum wp_global_val {
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+ WP_GLOBAL_NOISE,
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+ WP_GLOBAL_PHY_BUSY,
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+ WP_GLOBAL_PHY_RX,
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+ WP_GLOBAL_PHY_TX,
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+ WP_GLOBAL_FRAMES,
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+ WP_GLOBAL_PROBEREQ,
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+};
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+
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+static struct wprobe_item ath_wprobe_globals[] = {
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+ [WP_GLOBAL_NOISE] = {
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+ .name = "noise",
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+ .type = WPROBE_VAL_S16,
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+ .flags = WPROBE_F_KEEPSTAT
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+ },
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+ [WP_GLOBAL_PHY_BUSY] = {
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+ .name = "phy_busy",
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+ .type = WPROBE_VAL_U8,
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+ .flags = WPROBE_F_KEEPSTAT
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+ },
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+ [WP_GLOBAL_PHY_RX] = {
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+ .name = "phy_rx",
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+ .type = WPROBE_VAL_U8,
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+ .flags = WPROBE_F_KEEPSTAT
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+ },
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+ [WP_GLOBAL_PHY_TX] = {
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+ .name = "phy_tx",
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+ .type = WPROBE_VAL_U8,
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+ .flags = WPROBE_F_KEEPSTAT
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+ },
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+ [WP_GLOBAL_FRAMES] = {
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+ .name = "frames",
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+ .type = WPROBE_VAL_U32,
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+ },
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+ [WP_GLOBAL_PROBEREQ] = {
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+ .name = "probereq",
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+ .type = WPROBE_VAL_U32,
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+ },
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+};
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+
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+static struct wprobe_item ath_wprobe_link[] = {
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+ [WP_NODE_RSSI] = {
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+ .name = "rssi",
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+ .type = WPROBE_VAL_U8,
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+ .flags = WPROBE_F_KEEPSTAT
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+ },
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+ [WP_NODE_SIGNAL] = {
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+ .name = "signal",
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+ .type = WPROBE_VAL_S16,
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+ .flags = WPROBE_F_KEEPSTAT
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+ },
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+ [WP_NODE_RX_RATE] = {
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+ .name = "rx_rate",
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+ .type = WPROBE_VAL_U16,
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+ .flags = WPROBE_F_KEEPSTAT
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+ },
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+ [WP_NODE_TX_RATE] = {
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+ .name = "tx_rate",
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+ .type = WPROBE_VAL_U16,
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+ .flags = WPROBE_F_KEEPSTAT
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+ },
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+ [WP_NODE_RETRANSMIT_200] = {
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+ .name = "retransmit_200",
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+ .type = WPROBE_VAL_U8,
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+ .flags = WPROBE_F_KEEPSTAT
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+ },
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+ [WP_NODE_RETRANSMIT_400] = {
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+ .name = "retransmit_400",
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+ .type = WPROBE_VAL_U8,
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+ .flags = WPROBE_F_KEEPSTAT
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+ },
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+ [WP_NODE_RETRANSMIT_800] = {
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+ .name = "retransmit_800",
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+ .type = WPROBE_VAL_U8,
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+ .flags = WPROBE_F_KEEPSTAT
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+ },
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+ [WP_NODE_RETRANSMIT_1600] = {
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+ .name = "retransmit_1600",
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+ .type = WPROBE_VAL_U8,
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+ .flags = WPROBE_F_KEEPSTAT
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+ },
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+};
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+
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+#define AR5K_MIBC 0x0040
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+#define AR5K_MIBC_FREEZE (1 << 1)
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+#define AR5K_TXFC 0x80ec
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+#define AR5K_RXFC 0x80f0
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+#define AR5K_RXCLEAR 0x80f4
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+#define AR5K_CYCLES 0x80f8
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+
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+#define READ_CLR(_ah, _reg) \
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+ ({ u32 __val = OS_REG_READ(_ah, _reg); OS_REG_WRITE(_ah, _reg, 0); __val; })
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+
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+static bool
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+wprobe_disabled(void)
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+{
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+ return (!wprobe_add_iface || IS_ERR(wprobe_add_iface));
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+}
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+
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+static int
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+ath_wprobe_sync(struct wprobe_iface *dev, struct wprobe_link *l, struct wprobe_value *val, bool measure)
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+{
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+ struct ath_vap *avp = container_of(dev, struct ath_vap, av_wpif);
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+ struct ieee80211vap *vap = &avp->av_vap;
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+ struct ieee80211com *ic = vap->iv_ic;
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+ struct ath_softc *sc = ic->ic_dev->priv;
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+ struct ath_hal *ah = sc->sc_ah;
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+ u32 cc, busy, rx, tx;
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+ s16 noise;
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+
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+ if (l)
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+ goto out;
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+
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+ OS_REG_WRITE(ah, AR5K_MIBC, AR5K_MIBC_FREEZE);
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+ cc = READ_CLR(ah, AR5K_CYCLES);
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+ busy = READ_CLR(ah, AR5K_RXCLEAR);
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+ rx = READ_CLR(ah, AR5K_RXFC);
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+ tx = READ_CLR(ah, AR5K_TXFC);
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+ OS_REG_WRITE(ah, AR5K_MIBC, 0);
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+ noise = ath_hal_get_channel_noise(sc->sc_ah, &(sc->sc_curchan));
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+ ic->ic_channoise = noise;
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+
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+ WPROBE_FILL_BEGIN(val, ath_wprobe_globals);
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+ if (cc & 0xf0000000) {
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+ /* scale down if the counters are near max */
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+ cc >>= 8;
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+ busy >>= 8;
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+ rx >>= 8;
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+ tx >>= 8;
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+ }
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+ if (ah->ah_macType < 5212)
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+ goto phy_skip;
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+ if (!cc)
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+ goto phy_skip;
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+ if (busy > cc)
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+ goto phy_skip;
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+ if (rx > cc)
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+ goto phy_skip;
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+ if (tx > cc)
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+ goto phy_skip;
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+ busy = (busy * 100) / cc;
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+ rx = (rx * 100) / cc;
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+ tx = (tx * 100) / cc;
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+ WPROBE_SET(WP_GLOBAL_PHY_BUSY, U8, busy);
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+ WPROBE_SET(WP_GLOBAL_PHY_RX, U8, rx);
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+ WPROBE_SET(WP_GLOBAL_PHY_TX, U8, tx);
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+ WPROBE_SET(WP_GLOBAL_FRAMES, U32, avp->av_rxframes);
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+ WPROBE_SET(WP_GLOBAL_PROBEREQ, U32, avp->av_rxprobereq);
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+
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+phy_skip:
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+ WPROBE_SET(WP_GLOBAL_NOISE, S16, noise);
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+ WPROBE_FILL_END();
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+
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+out:
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+ return 0;
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+}
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+
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+#undef AR5K_TXFC
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+#undef AR5K_RXFC
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+#undef AR5K_RXCLEAR
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+#undef AR5K_CYCLES
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+#undef AR5K_MIBC
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+#undef AR5K_MIBC_FREEZE
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+#undef READ_CLR
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+
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+static const struct wprobe_iface ath_wprobe_dev = {
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+ .link_items = ath_wprobe_link,
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+ .n_link_items = ARRAY_SIZE(ath_wprobe_link),
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+ .global_items = ath_wprobe_globals,
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+ .n_global_items = ARRAY_SIZE(ath_wprobe_globals),
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+ .sync_data = ath_wprobe_sync,
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+};
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+
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+static int
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+ath_lookup_rateval(struct ieee80211_node *ni, int rate)
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+{
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+ struct ieee80211vap *vap = ni->ni_vap;
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+ struct ieee80211com *ic = vap->iv_ic;
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+ struct ath_softc *sc = ic->ic_dev->priv;
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+ const HAL_RATE_TABLE *rt = sc->sc_currates;
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+
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+ if ((!rt) || (rate < 0) || (rate >= ARRAY_SIZE(sc->sc_hwmap)))
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+ return -1;
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+
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+ rate = sc->sc_hwmap[rate].ieeerate;
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+ rate = sc->sc_rixmap[rate & IEEE80211_RATE_VAL];
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+ if ((rate < 0) || (rate >= rt->rateCount))
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+ return -1;
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+
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+ return rt->info[rate].rateKbps;
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+}
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+
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+static void
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+ath_wprobe_report_rx(struct ieee80211vap *vap, struct ath_rx_status *rs, struct sk_buff *skb)
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+{
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+ const struct ieee80211_frame *wh = (struct ieee80211_frame *)skb->data;
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+ struct wprobe_wlan_hdr hdr;
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+ struct ath_vap *avp;
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+ int hdrsize;
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+
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+ if (wprobe_disabled())
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+ return;
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+
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+ avp = ATH_VAP(vap);
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+ avp->av_rxframes++;
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+ if (wh->i_fc[0] == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ))
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+ avp->av_rxprobereq++;
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+
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+ memset(&hdr, 0, sizeof(hdr));
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+ hdr.len = skb->len;
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+ hdr.snr = rs->rs_rssi;
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+ hdr.type = WPROBE_PKT_RX;
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+ if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL)
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+ hdrsize = sizeof(struct ieee80211_ctlframe_addr2);
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+ else
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+ hdrsize = ieee80211_hdrsize(skb->data);
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+ wprobe_add_frame(&avp->av_wpif, &hdr, skb->data, hdrsize + 0x42);
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+}
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+
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+
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+static void
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+ath_node_sample_rx(struct ieee80211_node *ni, struct ath_rx_status *rs)
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+{
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+ struct ath_node *an = ATH_NODE(ni);
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+ struct ieee80211vap *vap = ni->ni_vap;
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+ struct ieee80211com *ic = vap->iv_ic;
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+ struct wprobe_link *l = &an->an_wplink;
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+ struct wprobe_value *v = l->val;
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+ unsigned long flags;
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+ int rate;
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+
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+ if (wprobe_disabled() || !an->an_wplink_active || !l->val)
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+ return;
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+
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+ rate = ath_lookup_rateval(ni, rs->rs_rate);
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+
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+ spin_lock_irqsave(&l->iface->lock, flags);
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+ WPROBE_FILL_BEGIN(v, ath_wprobe_link);
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+ WPROBE_SET(WP_NODE_RSSI, U8, rs->rs_rssi);
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+ WPROBE_SET(WP_NODE_SIGNAL, S16, ic->ic_channoise + rs->rs_rssi);
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+ if ((rate > 0) && (rate <= 600000))
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+ WPROBE_SET(WP_NODE_RX_RATE, U16, rate);
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+ WPROBE_FILL_END();
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+ wprobe_update_stats(l->iface, l);
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+ spin_unlock_irqrestore(&l->iface->lock, flags);
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+}
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+
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+static void
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+ath_wprobe_report_tx(struct ieee80211vap *vap, struct ath_tx_status *ts, struct sk_buff *skb)
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+{
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+ const struct ieee80211_frame *wh = (struct ieee80211_frame *)skb->data;
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+ struct wprobe_wlan_hdr hdr;
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+ struct ath_vap *avp;
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+ int hdrsize;
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+
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+ if (wprobe_disabled())
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+ return;
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+
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+ avp = ATH_VAP(vap);
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+
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+ memset(&hdr, 0, sizeof(hdr));
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+ hdr.len = skb->len;
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+ hdr.snr = ts->ts_rssi;
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+ hdr.type = WPROBE_PKT_TX;
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+ if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL)
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+ hdrsize = sizeof(struct ieee80211_ctlframe_addr2);
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+ else
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+ hdrsize = ieee80211_hdrsize(skb->data);
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+ wprobe_add_frame(&avp->av_wpif, &hdr, skb->data, hdrsize + 0x42);
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+}
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+
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+
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+
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+static void
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+ath_node_sample_tx(struct ieee80211_node *ni, struct ath_tx_status *ts, struct sk_buff *skb)
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+{
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+ struct ath_node *an = ATH_NODE(ni);
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+ struct ieee80211vap *vap = ni->ni_vap;
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+ struct ieee80211com *ic = vap->iv_ic;
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+ struct wprobe_link *l = &an->an_wplink;
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+ struct wprobe_value *v = l->val;
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+ unsigned long flags;
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+ int rate, rexmit_counter;
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+ int len = skb->len;
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+
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+ if (wprobe_disabled() || !an->an_wplink_active || !l->val)
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+ return;
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+
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+ ath_wprobe_report_tx(vap, ts, skb);
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+ rate = ath_lookup_rateval(ni, ts->ts_rate);
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+
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+ spin_lock_irqsave(&l->iface->lock, flags);
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+ WPROBE_FILL_BEGIN(v, ath_wprobe_link);
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+ WPROBE_SET(WP_NODE_RSSI, U8, ts->ts_rssi);
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+ WPROBE_SET(WP_NODE_SIGNAL, S16, ic->ic_channoise + ts->ts_rssi);
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+
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+ if (len <= 200)
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+ rexmit_counter = WP_NODE_RETRANSMIT_200;
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+ else if (len <= 400)
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+ rexmit_counter = WP_NODE_RETRANSMIT_400;
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+ else if (len <= 800)
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+ rexmit_counter = WP_NODE_RETRANSMIT_800;
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+ else
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+ rexmit_counter = WP_NODE_RETRANSMIT_1600;
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+ WPROBE_SET(rexmit_counter, U8, ts->ts_longretry);
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+
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+ if ((rate > 0) && (rate <= 600000))
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+ WPROBE_SET(WP_NODE_TX_RATE, U16, rate);
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+ WPROBE_FILL_END();
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+ wprobe_update_stats(l->iface, l);
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+ spin_unlock_irqrestore(&l->iface->lock, flags);
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+}
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+
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+static void
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+ath_wprobe_node_join(struct ieee80211vap *vap, struct ieee80211_node *ni)
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+{
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+ struct wprobe_iface *dev;
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+ struct wprobe_link *l;
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+ struct ath_vap *avp;
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+ struct ath_node *an = ATH_NODE(ni);
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+
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+ if (wprobe_disabled() || an->an_wplink_active)
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+ return;
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+
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+ avp = ATH_VAP(vap);
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+ dev = &avp->av_wpif;
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+ l = &an->an_wplink;
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+
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+ ieee80211_ref_node(ni);
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+ wprobe_add_link(dev, l, ni->ni_macaddr);
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+ an->an_wplink_active = 1;
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+}
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+
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+static void
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+ath_wprobe_do_node_leave(struct work_struct *work)
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+{
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+ struct ath_node *an = container_of(work, struct ath_node, an_destroy);
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+ struct ieee80211_node *ni = &an->an_node;
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+ struct ieee80211vap *vap = ni->ni_vap;
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+ struct wprobe_iface *dev;
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+ struct wprobe_link *l;
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+ struct ath_vap *avp;
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+
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+ avp = ATH_VAP(vap);
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+ dev = &avp->av_wpif;
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+ l = &an->an_wplink;
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+
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+ wprobe_remove_link(dev, l);
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+ ieee80211_unref_node(&ni);
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+ atomic_dec(&cleanup_tasks);
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+}
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+
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+static void
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+ath_wprobe_node_leave(struct ieee80211vap *vap, struct ieee80211_node *ni)
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+{
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+ struct ath_node *an = ATH_NODE(ni);
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+
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+ if (wprobe_disabled() || !an->an_wplink_active)
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+ return;
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+
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+ atomic_inc(&cleanup_tasks);
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+ an->an_wplink_active = 0;
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+ IEEE80211_INIT_WORK(&an->an_destroy, ath_wprobe_do_node_leave);
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+ schedule_work(&an->an_destroy);
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+}
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+
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+static void
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+ath_init_wprobe_dev(struct ath_vap *avp)
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+{
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+ struct ieee80211vap *vap = &avp->av_vap;
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+ struct wprobe_iface *dev = &avp->av_wpif;
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+
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+ if (wprobe_disabled() || (vap->iv_opmode == IEEE80211_M_WDS))
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+ return;
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+
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+ memcpy(dev, &ath_wprobe_dev, sizeof(struct wprobe_iface));
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+ dev->addr = vap->iv_myaddr;
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+ dev->name = vap->iv_dev->name;
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+ wprobe_add_iface(dev);
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+}
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+
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+static void
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+ath_remove_wprobe_dev(struct ath_vap *avp)
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+{
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+ struct ieee80211vap *vap = &avp->av_vap;
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+ struct ieee80211com *ic = vap->iv_ic;
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+ struct ieee80211_node *ni;
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+ struct wprobe_iface *dev = &avp->av_wpif;
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+ struct wprobe_link *l;
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+ struct ath_node *an;
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+ unsigned long flags;
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+
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+ if (wprobe_disabled() || (vap->iv_opmode == IEEE80211_M_WDS))
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+ return;
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+
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+restart:
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+ rcu_read_lock();
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+ list_for_each_entry_rcu(l, &dev->links, list) {
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+ an = container_of(l, struct ath_node, an_wplink);
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+
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+ if (!an->an_wplink_active)
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+ continue;
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+
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+ ni = &an->an_node;
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+ ath_wprobe_node_leave(vap, ni);
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+ rcu_read_unlock();
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+ goto restart;
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+ }
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+ rcu_read_unlock();
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+
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+ /* wait for the cleanup tasks to finish */
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+ while (atomic_read(&cleanup_tasks) != 0) {
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+ schedule();
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+ }
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+
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+ wprobe_remove_iface(dev);
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+}
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--- a/ath/if_ath.c
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+++ b/ath/if_ath.c
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@@ -400,6 +400,7 @@ static int countrycode = -1;
|
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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)
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|
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))
|
|
|