ath9k: Add a debugfs file to show interrupt statistics
Location: ath9k/<phy>/interrupt
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath9k/debug.c b/drivers/net/wireless/ath9k/debug.c
index da52812..a80ed57 100644
--- a/drivers/net/wireless/ath9k/debug.c
+++ b/drivers/net/wireless/ath9k/debug.c
@@ -128,6 +128,100 @@
.owner = THIS_MODULE
};
+
+void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status)
+{
+ if (status)
+ sc->sc_debug.stats.istats.total++;
+ if (status & ATH9K_INT_RX)
+ sc->sc_debug.stats.istats.rxok++;
+ if (status & ATH9K_INT_RXEOL)
+ sc->sc_debug.stats.istats.rxeol++;
+ if (status & ATH9K_INT_RXORN)
+ sc->sc_debug.stats.istats.rxorn++;
+ if (status & ATH9K_INT_TX)
+ sc->sc_debug.stats.istats.txok++;
+ if (status & ATH9K_INT_TXURN)
+ sc->sc_debug.stats.istats.txurn++;
+ if (status & ATH9K_INT_MIB)
+ sc->sc_debug.stats.istats.mib++;
+ if (status & ATH9K_INT_RXPHY)
+ sc->sc_debug.stats.istats.rxphyerr++;
+ if (status & ATH9K_INT_RXKCM)
+ sc->sc_debug.stats.istats.rx_keycache_miss++;
+ if (status & ATH9K_INT_SWBA)
+ sc->sc_debug.stats.istats.swba++;
+ if (status & ATH9K_INT_BMISS)
+ sc->sc_debug.stats.istats.bmiss++;
+ if (status & ATH9K_INT_BNR)
+ sc->sc_debug.stats.istats.bnr++;
+ if (status & ATH9K_INT_CST)
+ sc->sc_debug.stats.istats.cst++;
+ if (status & ATH9K_INT_GTT)
+ sc->sc_debug.stats.istats.gtt++;
+ if (status & ATH9K_INT_TIM)
+ sc->sc_debug.stats.istats.tim++;
+ if (status & ATH9K_INT_CABEND)
+ sc->sc_debug.stats.istats.cabend++;
+ if (status & ATH9K_INT_DTIMSYNC)
+ sc->sc_debug.stats.istats.dtimsync++;
+ if (status & ATH9K_INT_DTIM)
+ sc->sc_debug.stats.istats.dtim++;
+}
+
+static ssize_t read_file_interrupt(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath_softc *sc = file->private_data;
+ char buf[512];
+ unsigned int len = 0;
+
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%8s: %10u\n", "RX", sc->sc_debug.stats.istats.rxok);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%8s: %10u\n", "RXEOL", sc->sc_debug.stats.istats.rxeol);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%8s: %10u\n", "RXORN", sc->sc_debug.stats.istats.rxorn);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%8s: %10u\n", "TX", sc->sc_debug.stats.istats.txok);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%8s: %10u\n", "TXURN", sc->sc_debug.stats.istats.txurn);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%8s: %10u\n", "MIB", sc->sc_debug.stats.istats.mib);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%8s: %10u\n", "RXPHY", sc->sc_debug.stats.istats.rxphyerr);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%8s: %10u\n", "RXKCM", sc->sc_debug.stats.istats.rx_keycache_miss);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%8s: %10u\n", "SWBA", sc->sc_debug.stats.istats.swba);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%8s: %10u\n", "BMISS", sc->sc_debug.stats.istats.bmiss);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%8s: %10u\n", "BNR", sc->sc_debug.stats.istats.bnr);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%8s: %10u\n", "CST", sc->sc_debug.stats.istats.cst);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%8s: %10u\n", "GTT", sc->sc_debug.stats.istats.gtt);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%8s: %10u\n", "TIM", sc->sc_debug.stats.istats.tim);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%8s: %10u\n", "CABEND", sc->sc_debug.stats.istats.cabend);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%8s: %10u\n", "DTIMSYNC", sc->sc_debug.stats.istats.dtimsync);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%8s: %10u\n", "DTIM", sc->sc_debug.stats.istats.dtim);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%8s: %10u\n", "TOTAL", sc->sc_debug.stats.istats.total);
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static const struct file_operations fops_interrupt = {
+ .read = read_file_interrupt,
+ .open = ath9k_debugfs_open,
+ .owner = THIS_MODULE
+};
+
int ath9k_init_debug(struct ath_softc *sc)
{
sc->sc_debug.debug_mask = ath9k_debug;
@@ -146,6 +240,13 @@
if (!sc->sc_debug.debugfs_dma)
goto err;
+ sc->sc_debug.debugfs_interrupt = debugfs_create_file("interrupt",
+ S_IRUGO,
+ sc->sc_debug.debugfs_phy,
+ sc, &fops_interrupt);
+ if (!sc->sc_debug.debugfs_interrupt)
+ goto err;
+
return 0;
err:
ath9k_exit_debug(sc);
@@ -154,6 +255,7 @@
void ath9k_exit_debug(struct ath_softc *sc)
{
+ debugfs_remove(sc->sc_debug.debugfs_interrupt);
debugfs_remove(sc->sc_debug.debugfs_dma);
debugfs_remove(sc->sc_debug.debugfs_phy);
debugfs_remove(sc->sc_debug.debugfs_root);