lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ixgbe: add tracking of AF_XDP zero-copy state for each queue pair

Browse Source 
Here, we add a bitmap to the ixgbe_adapter that tracks if a
certain queue pair has been "zero-copy enabled" via the ndo_bpf.
The bitmap is used in ixgbe_xsk_umem, and enables zero-copy if
and only if XDP is enabled, the corresponding qid in the bitmap
is set, and the umem is non-NULL;

Signed-off-by: Jan Sokolowski <jan.sokolowski@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Jan Sokolowski
2019-03-22 14:16:37 -07:00
committed by Jeff Kirsher
parent 11694b0361
commit d49e286d35
3 changed files with 11 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
View File

@@ -6288,6 +6288,10 @@ static int ixgbe_sw_init(struct ixgbe_adapter *adapter,
if (ixgbe_init_rss_key(adapter))
return -ENOMEM;
adapter->af_xdp_zc_qps = bitmap_zalloc(MAX_XDP_QUEUES, GFP_KERNEL);
if (!adapter->af_xdp_zc_qps)
return -ENOMEM;
/* Set MAC specific capability flags and exceptions */
switch (hw->mac.type) {
case ixgbe_mac_82598EB:
@@ -11161,6 +11165,7 @@ err_sw_init:
kfree(adapter->jump_tables[0]);
kfree(adapter->mac_table);
kfree(adapter->rss_key);
bitmap_free(adapter->af_xdp_zc_qps);
err_ioremap:
disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state);
free_netdev(netdev);
@@ -11249,6 +11254,7 @@ static void ixgbe_remove(struct pci_dev *pdev)
kfree(adapter->mac_table);
kfree(adapter->rss_key);
bitmap_free(adapter->af_xdp_zc_qps);
disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state);
free_netdev(netdev);