From 66d90e7d1654f3ed2e66d90f82dbc9daa62f534c Mon Sep 17 00:00:00 2001 From: Kamil Krawczyk Date: Wed, 4 Jun 2014 00:57:12 +0000 Subject: [PATCH] i40e/i40evf: modify debug prints to avoid seg faults Some AQ debug prints needs be moved around or do additional checks so they will not cause our tool applications to cause segmentation faults. The tools run in user space and we need to correctly reference kernel space memory. Change-ID: Ia2ac4076f576b805f350453fd50ad69c2a91ab9a Signed-off-by: Kamil Krawczyk Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_adminq.c | 15 +++++++++++---- drivers/net/ethernet/intel/i40evf/i40e_adminq.c | 15 +++++++++++---- 2 files changed, 22 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_adminq.c b/drivers/net/ethernet/intel/i40e/i40e_adminq.c index 40381abb873b..95aab708a88d 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_adminq.c +++ b/drivers/net/ethernet/intel/i40e/i40e_adminq.c @@ -850,6 +850,7 @@ i40e_status i40e_asq_send_command(struct i40e_hw *hw, } /* bump the tail */ + i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQTX: desc and buffer:\n"); i40e_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc_on_ring, buff); (hw->aq.asq.next_to_use)++; if (hw->aq.asq.next_to_use == hw->aq.asq.count) @@ -887,6 +888,7 @@ i40e_status i40e_asq_send_command(struct i40e_hw *hw, I40E_DEBUG_AQ_MESSAGE, "AQTX: Command completed with error 0x%X.\n", retval); + /* strip off FW internal code */ retval &= 0xff; } @@ -901,6 +903,12 @@ i40e_status i40e_asq_send_command(struct i40e_hw *hw, if (i40e_is_nvm_update_op(desc)) hw->aq.nvm_busy = true; + if (le16_to_cpu(desc->datalen) == buff_size) { + i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, + "AQTX: desc and buffer writeback:\n"); + i40e_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc, buff); + } + /* update the error if time out occurred */ if ((!cmd_completed) && (!details->async && !details->postpone)) { @@ -972,10 +980,6 @@ i40e_status i40e_clean_arq_element(struct i40e_hw *hw, /* now clean the next descriptor */ desc = I40E_ADMINQ_DESC(hw->aq.arq, ntc); desc_idx = ntc; - i40e_debug_aq(hw, - I40E_DEBUG_AQ_COMMAND, - (void *)desc, - hw->aq.arq.r.arq_bi[desc_idx].va); flags = le16_to_cpu(desc->flags); if (flags & I40E_AQ_FLAG_ERR) { @@ -998,6 +1002,9 @@ i40e_status i40e_clean_arq_element(struct i40e_hw *hw, if (i40e_is_nvm_update_op(&e->desc)) hw->aq.nvm_busy = false; + i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQRX: desc and buffer:\n"); + i40e_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc, e->msg_buf); + /* Restore the original datalen and buffer address in the desc, * FW updates datalen to indicate the event message * size diff --git a/drivers/net/ethernet/intel/i40evf/i40e_adminq.c b/drivers/net/ethernet/intel/i40evf/i40e_adminq.c index 4a90a85b0b53..15853fd699a4 100644 --- a/drivers/net/ethernet/intel/i40evf/i40e_adminq.c +++ b/drivers/net/ethernet/intel/i40evf/i40e_adminq.c @@ -804,6 +804,7 @@ i40e_status i40evf_asq_send_command(struct i40e_hw *hw, } /* bump the tail */ + i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQTX: desc and buffer:\n"); i40evf_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc_on_ring, buff); (hw->aq.asq.next_to_use)++; if (hw->aq.asq.next_to_use == hw->aq.asq.count) @@ -841,6 +842,7 @@ i40e_status i40evf_asq_send_command(struct i40e_hw *hw, I40E_DEBUG_AQ_MESSAGE, "AQTX: Command completed with error 0x%X.\n", retval); + /* strip off FW internal code */ retval &= 0xff; } @@ -855,6 +857,12 @@ i40e_status i40evf_asq_send_command(struct i40e_hw *hw, if (i40e_is_nvm_update_op(desc)) hw->aq.nvm_busy = true; + if (le16_to_cpu(desc->datalen) == buff_size) { + i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, + "AQTX: desc and buffer writeback:\n"); + i40evf_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc, buff); + } + /* update the error if time out occurred */ if ((!cmd_completed) && (!details->async && !details->postpone)) { @@ -926,10 +934,6 @@ i40e_status i40evf_clean_arq_element(struct i40e_hw *hw, /* now clean the next descriptor */ desc = I40E_ADMINQ_DESC(hw->aq.arq, ntc); desc_idx = ntc; - i40evf_debug_aq(hw, - I40E_DEBUG_AQ_COMMAND, - (void *)desc, - hw->aq.arq.r.arq_bi[desc_idx].va); flags = le16_to_cpu(desc->flags); if (flags & I40E_AQ_FLAG_ERR) { @@ -952,6 +956,9 @@ i40e_status i40evf_clean_arq_element(struct i40e_hw *hw, if (i40e_is_nvm_update_op(&e->desc)) hw->aq.nvm_busy = false; + i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQRX: desc and buffer:\n"); + i40evf_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc, e->msg_buf); + /* Restore the original datalen and buffer address in the desc, * FW updates datalen to indicate the event message * size -- 2.20.1