diff options
| author | Coiby Xu <coxu@redhat.com> | 2021-03-04 05:55:41 +0300 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2021-04-23 19:03:56 +0300 |
| commit | 065aa694a76e213d5774eeb70a9c11b8cf0dfdb7 (patch) | |
| tree | 0cfa2788bf0b67aec97c37bbf8af7b3f6bbef452 /drivers/net/ethernet/intel | |
| parent | 6d2c322cce04c177d96baafdbd9bad5c49456719 (diff) | |
| download | linux-065aa694a76e213d5774eeb70a9c11b8cf0dfdb7.tar.xz | |
i40e: use minimal Tx and Rx pairs for kdump
Set the number of the MSI-X vectors to 1. When MSI-X is enabled,
it's not allowed to use more TC queue pairs than MSI-X vectors
(pf->num_lan_msix) exist. Thus the number of Tx and Rx pairs
(vsi->num_queue_pairs) will be equal to the number of MSI-X vectors,
i.e., 1.
Signed-off-by: Coiby Xu <coxu@redhat.com>
Tested-by: Dave Switzer <david.switzer@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_main.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 687ef52a8116..b51b8e25501d 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -6,6 +6,7 @@ #include <linux/pci.h> #include <linux/bpf.h> #include <generated/utsrelease.h> +#include <linux/crash_dump.h> /* Local includes */ #include "i40e.h" @@ -15506,6 +15507,14 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (err) goto err_switch_setup; + /* Reduce Tx and Rx pairs for kdump + * When MSI-X is enabled, it's not allowed to use more TC queue + * pairs than MSI-X vectors (pf->num_lan_msix) exist. Thus + * vsi->num_queue_pairs will be equal to pf->num_lan_msix, i.e., 1. + */ + if (is_kdump_kernel()) + pf->num_lan_msix = 1; + pf->udp_tunnel_nic.set_port = i40e_udp_tunnel_set_port; pf->udp_tunnel_nic.unset_port = i40e_udp_tunnel_unset_port; pf->udp_tunnel_nic.flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP; |