UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue 

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2022-01-31

This series contains updates to i40e driver only.

Jedrzej fixes a condition check which would cause an error when
resetting bandwidth when DCB is active with one TC.

Karen resolves a null pointer dereference that could occur when removing
the driver while VSI rings are being disabled.

* '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  i40e: Fix reset path while removing the driver
  i40e: Fix reset bw limit when DCB enabled with 1 TC
====================

Link: https://lore.kernel.org/r/20220201000522.505909-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski 2022-02-01 20:39:46 -08:00
parent d0cfa548db 6533e558c6
commit c7108979a0
2 changed files with 30 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/ethernet/intel/i40e/i40e.h
View File

@ -144,6 +144,7 @@ enum i40e_state_t {
__I40E_VIRTCHNL_OP_PENDING,
__I40E_RECOVERY_MODE,
__I40E_VF_RESETS_DISABLED, /* disable resets during i40e_remove */
__I40E_IN_REMOVE,
__I40E_VFS_RELEASING,
/* This must be last as it determines the size of the BITMAP */
__I40E_STATE_SIZE__,

31
drivers/net/ethernet/intel/i40e/i40e_main.c
View File

@ -5372,7 +5372,15 @@ static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
/* There is no need to reset BW when mqprio mode is on. */
if (pf->flags & I40E_FLAG_TC_MQPRIO)
return 0;
if (!vsi->mqprio_qopt.qopt.hw && !(pf->flags & I40E_FLAG_DCB_ENABLED)) {
if (!vsi->mqprio_qopt.qopt.hw) {
if (pf->flags & I40E_FLAG_DCB_ENABLED)
goto skip_reset;
if (IS_ENABLED(CONFIG_I40E_DCB) &&
i40e_dcb_hw_get_num_tc(&pf->hw) == 1)
goto skip_reset;
ret = i40e_set_bw_limit(vsi, vsi->seid, 0);
if (ret)
dev_info(&pf->pdev->dev,
@ -5380,6 +5388,8 @@ static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
vsi->seid);
return ret;
}
skip_reset:
memset(&bw_data, 0, sizeof(bw_data));
bw_data.tc_valid_bits = enabled_tc;
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
@ -10853,6 +10863,9 @@ static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit,
bool lock_acquired)
{
int ret;
if (test_bit(__I40E_IN_REMOVE, pf->state))
return;
/* Now we wait for GRST to settle out.
* We don't have to delete the VEBs or VSIs from the hw switch
* because the reset will make them disappear.
@ -12212,6 +12225,8 @@ int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
vsi->req_queue_pairs = queue_count;
i40e_prep_for_reset(pf);
if (test_bit(__I40E_IN_REMOVE, pf->state))
return pf->alloc_rss_size;
pf->alloc_rss_size = new_rss_size;
@ -13038,6 +13053,10 @@ static int i40e_xdp_setup(struct i40e_vsi *vsi, struct bpf_prog *prog,
if (need_reset)
i40e_prep_for_reset(pf);
/* VSI shall be deleted in a moment, just return EINVAL */
if (test_bit(__I40E_IN_REMOVE, pf->state))
return -EINVAL;
old_prog = xchg(&vsi->xdp_prog, prog);
if (need_reset) {
@ -15928,8 +15947,13 @@ static void i40e_remove(struct pci_dev *pdev)
i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
while (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
/* Grab __I40E_RESET_RECOVERY_PENDING and set __I40E_IN_REMOVE
* flags, once they are set, i40e_rebuild should not be called as
* i40e_prep_for_reset always returns early.
*/
while (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
usleep_range(1000, 2000);
set_bit(__I40E_IN_REMOVE, pf->state);
if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
set_bit(__I40E_VF_RESETS_DISABLED, pf->state);
@ -16128,6 +16152,9 @@ static void i40e_pci_error_reset_done(struct pci_dev *pdev)
{
struct i40e_pf *pf = pci_get_drvdata(pdev);
if (test_bit(__I40E_IN_REMOVE, pf->state))
return;
i40e_reset_and_rebuild(pf, false, false);
}