iwlagn: move traffic_log back to upper layer

The traffic log debugfs handlers were mistakenly moved to the
transport layer because they print the pointers of the Tx / Rx
queues. The pointers of the queues can be fetched by another debugfs
handler.
So bring the traffic log back to the upper layer and remove the part
that reads the Tx / Rx queues' pointers.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
index e320cc1..d0c63cf 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -804,6 +804,89 @@ DEBUGFS_READ_WRITE_FILE_OPS(disable_ht40);
 DEBUGFS_READ_WRITE_FILE_OPS(sleep_level_override);
 DEBUGFS_READ_FILE_OPS(current_sleep_command);
 
+static ssize_t iwl_dbgfs_traffic_log_read(struct file *file,
+                                        char __user *user_buf,
+                                        size_t count, loff_t *ppos)
+{
+       struct iwl_priv *priv = file->private_data;
+       int pos = 0, ofs = 0;
+       int cnt = 0, entry;
+
+       char *buf;
+       int bufsz = ((IWL_TRAFFIC_ENTRIES * IWL_TRAFFIC_ENTRY_SIZE * 64) * 2) +
+               (hw_params(priv).max_txq_num * 32 * 8) + 400;
+       const u8 *ptr;
+       ssize_t ret;
+
+       buf = kzalloc(bufsz, GFP_KERNEL);
+       if (!buf) {
+               IWL_ERR(priv, "Can not allocate buffer\n");
+               return -ENOMEM;
+       }
+       if (priv->tx_traffic &&
+               (iwl_get_debug_level(priv->shrd) & IWL_DL_TX)) {
+               ptr = priv->tx_traffic;
+               pos += scnprintf(buf + pos, bufsz - pos,
+                               "Tx Traffic idx: %u\n", priv->tx_traffic_idx);
+               for (cnt = 0, ofs = 0; cnt < IWL_TRAFFIC_ENTRIES; cnt++) {
+                       for (entry = 0; entry < IWL_TRAFFIC_ENTRY_SIZE / 16;
+                            entry++,  ofs += 16) {
+                               pos += scnprintf(buf + pos, bufsz - pos,
+                                               "0x%.4x ", ofs);
+                               hex_dump_to_buffer(ptr + ofs, 16, 16, 2,
+                                                  buf + pos, bufsz - pos, 0);
+                               pos += strlen(buf + pos);
+                               if (bufsz - pos > 0)
+                                       buf[pos++] = '\n';
+                       }
+               }
+       }
+
+       if (priv->rx_traffic &&
+               (iwl_get_debug_level(priv->shrd) & IWL_DL_RX)) {
+               ptr = priv->rx_traffic;
+               pos += scnprintf(buf + pos, bufsz - pos,
+                               "Rx Traffic idx: %u\n", priv->rx_traffic_idx);
+               for (cnt = 0, ofs = 0; cnt < IWL_TRAFFIC_ENTRIES; cnt++) {
+                       for (entry = 0; entry < IWL_TRAFFIC_ENTRY_SIZE / 16;
+                            entry++,  ofs += 16) {
+                               pos += scnprintf(buf + pos, bufsz - pos,
+                                               "0x%.4x ", ofs);
+                               hex_dump_to_buffer(ptr + ofs, 16, 16, 2,
+                                                  buf + pos, bufsz - pos, 0);
+                               pos += strlen(buf + pos);
+                               if (bufsz - pos > 0)
+                                       buf[pos++] = '\n';
+                       }
+               }
+       }
+
+       ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
+       kfree(buf);
+       return ret;
+}
+
+static ssize_t iwl_dbgfs_traffic_log_write(struct file *file,
+                                        const char __user *user_buf,
+                                        size_t count, loff_t *ppos)
+{
+       struct iwl_priv *priv = file->private_data;
+       char buf[8];
+       int buf_size;
+       int traffic_log;
+
+       memset(buf, 0, sizeof(buf));
+       buf_size = min(count, sizeof(buf) -  1);
+       if (copy_from_user(buf, user_buf, buf_size))
+               return -EFAULT;
+       if (sscanf(buf, "%d", &traffic_log) != 1)
+               return -EFAULT;
+       if (traffic_log == 0)
+               iwl_reset_traffic_log(priv);
+
+       return count;
+}
+
 static const char *fmt_value = "  %-30s %10u\n";
 static const char *fmt_hex   = "  %-30s       0x%02X\n";
 static const char *fmt_table = "  %-30s %10u  %10u  %10u  %10u\n";
@@ -2340,6 +2423,7 @@ static ssize_t iwl_dbgfs_protection_mode_write(struct file *file,
 
 DEBUGFS_READ_FILE_OPS(rx_statistics);
 DEBUGFS_READ_FILE_OPS(tx_statistics);
+DEBUGFS_READ_WRITE_FILE_OPS(traffic_log);
 DEBUGFS_READ_FILE_OPS(ucode_rx_stats);
 DEBUGFS_READ_FILE_OPS(ucode_tx_stats);
 DEBUGFS_READ_FILE_OPS(ucode_general_stats);
@@ -2400,6 +2484,7 @@ int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
        DEBUGFS_ADD_FILE(disable_ht40, dir_data, S_IWUSR | S_IRUSR);
        DEBUGFS_ADD_FILE(rx_statistics, dir_debug, S_IRUSR);
        DEBUGFS_ADD_FILE(tx_statistics, dir_debug, S_IRUSR);
+       DEBUGFS_ADD_FILE(traffic_log, dir_debug, S_IWUSR | S_IRUSR);
        DEBUGFS_ADD_FILE(power_save_status, dir_debug, S_IRUSR);
        DEBUGFS_ADD_FILE(clear_ucode_statistics, dir_debug, S_IWUSR);
        DEBUGFS_ADD_FILE(clear_traffic_statistics, dir_debug, S_IWUSR);

diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.c b/drivers/net/wireless/iwlwifi/iwl-trans.c
index 3948d31..28fbaa2 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-trans.c
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.c
@@ -1561,111 +1561,6 @@ static const struct file_operations iwl_dbgfs_##name##_ops = {          \
        .llseek = generic_file_llseek,                                  \
 };
 
-static ssize_t iwl_dbgfs_traffic_log_read(struct file *file,
-                                        char __user *user_buf,
-                                        size_t count, loff_t *ppos)
-{
-       struct iwl_trans *trans = file->private_data;
-       struct iwl_priv *priv = priv(trans);
-       int pos = 0, ofs = 0;
-       int cnt = 0, entry;
-       struct iwl_trans_pcie *trans_pcie =
-               IWL_TRANS_GET_PCIE_TRANS(trans);
-       struct iwl_tx_queue *txq;
-       struct iwl_queue *q;
-       struct iwl_rx_queue *rxq = &trans_pcie->rxq;
-       char *buf;
-       int bufsz = ((IWL_TRAFFIC_ENTRIES * IWL_TRAFFIC_ENTRY_SIZE * 64) * 2) +
-               (hw_params(trans).max_txq_num * 32 * 8) + 400;
-       const u8 *ptr;
-       ssize_t ret;
-
-       if (!trans_pcie->txq) {
-               IWL_ERR(trans, "txq not ready\n");
-               return -EAGAIN;
-       }
-       buf = kzalloc(bufsz, GFP_KERNEL);
-       if (!buf) {
-               IWL_ERR(trans, "Can not allocate buffer\n");
-               return -ENOMEM;
-       }
-       pos += scnprintf(buf + pos, bufsz - pos, "Tx Queue\n");
-       for (cnt = 0; cnt < hw_params(trans).max_txq_num; cnt++) {
-               txq = &trans_pcie->txq[cnt];
-               q = &txq->q;
-               pos += scnprintf(buf + pos, bufsz - pos,
-                               "q[%d]: read_ptr: %u, write_ptr: %u\n",
-                               cnt, q->read_ptr, q->write_ptr);
-       }
-       if (priv->tx_traffic &&
-               (iwl_get_debug_level(trans->shrd) & IWL_DL_TX)) {
-               ptr = priv->tx_traffic;
-               pos += scnprintf(buf + pos, bufsz - pos,
-                               "Tx Traffic idx: %u\n", priv->tx_traffic_idx);
-               for (cnt = 0, ofs = 0; cnt < IWL_TRAFFIC_ENTRIES; cnt++) {
-                       for (entry = 0; entry < IWL_TRAFFIC_ENTRY_SIZE / 16;
-                            entry++,  ofs += 16) {
-                               pos += scnprintf(buf + pos, bufsz - pos,
-                                               "0x%.4x ", ofs);
-                               hex_dump_to_buffer(ptr + ofs, 16, 16, 2,
-                                                  buf + pos, bufsz - pos, 0);
-                               pos += strlen(buf + pos);
-                               if (bufsz - pos > 0)
-                                       buf[pos++] = '\n';
-                       }
-               }
-       }
-
-       pos += scnprintf(buf + pos, bufsz - pos, "Rx Queue\n");
-       pos += scnprintf(buf + pos, bufsz - pos,
-                       "read: %u, write: %u\n",
-                        rxq->read, rxq->write);
-
-       if (priv->rx_traffic &&
-               (iwl_get_debug_level(trans->shrd) & IWL_DL_RX)) {
-               ptr = priv->rx_traffic;
-               pos += scnprintf(buf + pos, bufsz - pos,
-                               "Rx Traffic idx: %u\n", priv->rx_traffic_idx);
-               for (cnt = 0, ofs = 0; cnt < IWL_TRAFFIC_ENTRIES; cnt++) {
-                       for (entry = 0; entry < IWL_TRAFFIC_ENTRY_SIZE / 16;
-                            entry++,  ofs += 16) {
-                               pos += scnprintf(buf + pos, bufsz - pos,
-                                               "0x%.4x ", ofs);
-                               hex_dump_to_buffer(ptr + ofs, 16, 16, 2,
-                                                  buf + pos, bufsz - pos, 0);
-                               pos += strlen(buf + pos);
-                               if (bufsz - pos > 0)
-                                       buf[pos++] = '\n';
-                       }
-               }
-       }
-
-       ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
-       kfree(buf);
-       return ret;
-}
-
-static ssize_t iwl_dbgfs_traffic_log_write(struct file *file,
-                                        const char __user *user_buf,
-                                        size_t count, loff_t *ppos)
-{
-       struct iwl_trans *trans = file->private_data;
-       char buf[8];
-       int buf_size;
-       int traffic_log;
-
-       memset(buf, 0, sizeof(buf));
-       buf_size = min(count, sizeof(buf) -  1);
-       if (copy_from_user(buf, user_buf, buf_size))
-               return -EFAULT;
-       if (sscanf(buf, "%d", &traffic_log) != 1)
-               return -EFAULT;
-       if (traffic_log == 0)
-               iwl_reset_traffic_log(priv(trans));
-
-       return count;
-}
-
 static ssize_t iwl_dbgfs_tx_queue_read(struct file *file,
                                                char __user *user_buf,
                                                size_t count, loff_t *ppos)
@@ -2031,7 +1926,6 @@ static ssize_t iwl_dbgfs_fh_reg_read(struct file *file,
        return ret;
 }
 
-DEBUGFS_READ_WRITE_FILE_OPS(traffic_log);
 DEBUGFS_READ_WRITE_FILE_OPS(log_event);
 DEBUGFS_READ_WRITE_FILE_OPS(interrupt);
 DEBUGFS_READ_FILE_OPS(fh_reg);
@@ -2046,7 +1940,6 @@ DEBUGFS_WRITE_FILE_OPS(csr);
 static int iwl_trans_pcie_dbgfs_register(struct iwl_trans *trans,
                                        struct dentry *dir)
 {
-       DEBUGFS_ADD_FILE(traffic_log, dir, S_IWUSR | S_IRUSR);
        DEBUGFS_ADD_FILE(rx_queue, dir, S_IRUSR);
        DEBUGFS_ADD_FILE(tx_queue, dir, S_IRUSR);
        DEBUGFS_ADD_FILE(log_event, dir, S_IWUSR | S_IRUSR);