[net-next 11/15] i40e: debugfs command to change RSS queue count
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STALE4694d
SUPERSEDED: 1 (0M)
From: Jeff Kirsher <hidden>
Date: 2013-12-12 12:41:05
Subsystem:
intel ethernet drivers, networking drivers, the rest · Maintainers:
Tony Nguyen, Przemek Kitszel, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Revision v1 of 102 in this series; 1 review trailer.
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From: Anjali Singhai Jain <redacted> This is the 3rd of 3 patches that implements changing the number of queues on the fly. This patch adds the debugfs hook for calling the change queues flow with a request to change the number of RSS queues. This is intended to also be called eventually from ethtool. Change-Id: Ib6b332f0ec8e58989ef8c65ec30079d01fdf6c9a Signed-off-by: Anjali Singhai Jain <redacted> Signed-off-by: Jesse Brandeburg <redacted> Tested-by: Kavindya Deegala <redacted> Signed-off-by: Jeff Kirsher <redacted> --- drivers/net/ethernet/intel/i40e/i40e_debugfs.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c
index 9c675b5..3303b43 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c@@ -1792,6 +1792,17 @@ static ssize_t i40e_dbg_command_write(struct file *filp, } kfree(buff); buff = NULL; + } else if (strncmp(cmd_buf, "set rss_size", 12) == 0) { + u16 queue_count; + cnt = sscanf(&cmd_buf[12], "%hi", &queue_count); + if (cnt != 1) { + dev_info(&pf->pdev->dev, + "set rss_size: bad command string, cnt=%d\n", cnt); + goto command_write_done; + } + dev_info(&pf->pdev->dev, " set rss_size requesting %d queues\n", queue_count); + i40e_reconfig_rss_queues(pf, queue_count); + dev_info(&pf->pdev->dev, " new rss_size %d\n", pf->rss_size); } else { dev_info(&pf->pdev->dev, "unknown command '%s'\n", cmd_buf); dev_info(&pf->pdev->dev, "available commands\n");
@@ -1827,6 +1838,7 @@ static ssize_t i40e_dbg_command_write(struct file *filp, dev_info(&pf->pdev->dev, " lldp event on\n"); dev_info(&pf->pdev->dev, " lldp event off\n"); dev_info(&pf->pdev->dev, " nvm read [module] [word_offset] [word_count]\n"); + dev_info(&pf->pdev->dev, " set rss_size <count>\n"); } command_write_done:
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1.8.3.1