From 3753cb240b13c29b706400bebf7cb941838593b6 Mon Sep 17 00:00:00 2001 From: Neerav Parikh Date: Tue, 26 Nov 2013 10:49:25 +0000 Subject: [PATCH] i40e: Fix dump output from debugfs calls The debugfs commands that dump hex information are not doing these as expected viz. "lldp get local", "nvm read", "dump debug fwdata", etc. Use print_hex_dump() instead to hex dump and remove the print buffer stuff from the code. Change-Id: I507bd8b2187aae8bad5055b7872978c309cf143e Signed-off-by: Neerav Parikh Signed-off-by: Jesse Brandeburg Signed-off-by: Jeff Kirsher --- .../net/ethernet/intel/i40e/i40e_debugfs.c | 72 +++++-------------- 1 file changed, 19 insertions(+), 53 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c index 9a59dda6b5ce..18296f8fcb68 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c +++ b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c @@ -1022,8 +1022,6 @@ static ssize_t i40e_dbg_command_write(struct file *filp, char *cmd_buf, *cmd_buf_tmp; int bytes_not_copied; struct i40e_vsi *vsi; - u8 *print_buf_start; - u8 *print_buf; int vsi_seid; int veb_seid; int cnt; @@ -1048,11 +1046,6 @@ static ssize_t i40e_dbg_command_write(struct file *filp, count = cmd_buf_tmp - cmd_buf + 1; } - print_buf_start = kzalloc(I40E_MAX_DEBUG_OUT_BUFFER, GFP_KERNEL); - if (!print_buf_start) - goto command_write_done; - print_buf = print_buf_start; - if (strncmp(cmd_buf, "add vsi", 7) == 0) { vsi_seid = -1; cnt = sscanf(&cmd_buf[7], "%i", &vsi_seid); @@ -1592,19 +1585,15 @@ static ssize_t i40e_dbg_command_write(struct file *filp, packet_len = min_t(u16, packet_len, I40E_FDIR_MAX_RAW_PACKET_LOOKUP); - dev_info(&pf->pdev->dev, "FD raw packet:\n"); for (i = 0; i < packet_len; i++) { sscanf(&asc_packet[j], "%2hhx ", &fd_data.raw_packet[i]); j += 3; - snprintf(print_buf, 3, "%02x ", fd_data.raw_packet[i]); - print_buf += 3; - if ((i % 16) == 15) { - snprintf(print_buf, 1, "\n"); - print_buf++; - } } - dev_info(&pf->pdev->dev, "%s\n", print_buf_start); + dev_info(&pf->pdev->dev, "FD raw packet dump\n"); + print_hex_dump(KERN_INFO, "FD raw packet: ", + DUMP_PREFIX_OFFSET, 16, 1, + fd_data.raw_packet, packet_len, true); ret = i40e_program_fdir_filter(&fd_data, pf, add); if (!ret) { dev_info(&pf->pdev->dev, "Filter command send Status : Success\n"); @@ -1638,7 +1627,7 @@ static ssize_t i40e_dbg_command_write(struct file *filp, } else if (strncmp(&cmd_buf[5], "get local", 9) == 0) { u16 llen, rlen; - int ret, i; + int ret; u8 *buff; buff = kzalloc(I40E_LLDPDU_SIZE, GFP_KERNEL); if (!buff) @@ -1656,22 +1645,15 @@ static ssize_t i40e_dbg_command_write(struct file *filp, buff = NULL; goto command_write_done; } - dev_info(&pf->pdev->dev, - "Get LLDP MIB (local) AQ buffer written back:\n"); - for (i = 0; i < I40E_LLDPDU_SIZE; i++) { - snprintf(print_buf, 3, "%02x ", buff[i]); - print_buf += 3; - if ((i % 16) == 15) { - snprintf(print_buf, 1, "\n"); - print_buf++; - } - } - dev_info(&pf->pdev->dev, "%s\n", print_buf_start); + dev_info(&pf->pdev->dev, "LLDP MIB (local)\n"); + print_hex_dump(KERN_INFO, "LLDP MIB (local): ", + DUMP_PREFIX_OFFSET, 16, 1, + buff, I40E_LLDPDU_SIZE, true); kfree(buff); buff = NULL; } else if (strncmp(&cmd_buf[5], "get remote", 10) == 0) { u16 llen, rlen; - int ret, i; + int ret; u8 *buff; buff = kzalloc(I40E_LLDPDU_SIZE, GFP_KERNEL); if (!buff) @@ -1690,17 +1672,10 @@ static ssize_t i40e_dbg_command_write(struct file *filp, buff = NULL; goto command_write_done; } - dev_info(&pf->pdev->dev, - "Get LLDP MIB (remote) AQ buffer written back:\n"); - for (i = 0; i < I40E_LLDPDU_SIZE; i++) { - snprintf(print_buf, 3, "%02x ", buff[i]); - print_buf += 3; - if ((i % 16) == 15) { - snprintf(print_buf, 1, "\n"); - print_buf++; - } - } - dev_info(&pf->pdev->dev, "%s\n", print_buf_start); + dev_info(&pf->pdev->dev, "LLDP MIB (remote)\n"); + print_hex_dump(KERN_INFO, "LLDP MIB (remote): ", + DUMP_PREFIX_OFFSET, 16, 1, + buff, I40E_LLDPDU_SIZE, true); kfree(buff); buff = NULL; } else if (strncmp(&cmd_buf[5], "event on", 8) == 0) { @@ -1725,7 +1700,7 @@ static ssize_t i40e_dbg_command_write(struct file *filp, } } } else if (strncmp(cmd_buf, "nvm read", 8) == 0) { - u16 buffer_len, i, bytes; + u16 buffer_len, bytes; u16 module; u32 offset; u16 *buff; @@ -1779,16 +1754,10 @@ static ssize_t i40e_dbg_command_write(struct file *filp, dev_info(&pf->pdev->dev, "Read NVM module=0x%x offset=0x%x words=%d\n", module, offset, buffer_len); - for (i = 0; i < buffer_len; i++) { - if ((i % 16) == 0) { - snprintf(print_buf, 11, "\n0x%08x: ", - offset + i); - print_buf += 11; - } - snprintf(print_buf, 5, "%04x ", buff[i]); - print_buf += 5; - } - dev_info(&pf->pdev->dev, "%s\n", print_buf_start); + if (buffer_len) + print_hex_dump(KERN_INFO, "NVM Dump: ", + DUMP_PREFIX_OFFSET, 16, 2, + buff, buffer_len, true); } kfree(buff); buff = NULL; @@ -1832,9 +1801,6 @@ static ssize_t i40e_dbg_command_write(struct file *filp, command_write_done: kfree(cmd_buf); cmd_buf = NULL; - kfree(print_buf_start); - print_buf = NULL; - print_buf_start = NULL; return count; }