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ixgbe: Fix calculation of queue with VFs and flow director on interface flap

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[ Upstream commit 4fad78ad6422d9bca62135bbed8b6abc4cbb85b8 ]

This patch fixes the calculation of queue when we restore flow director
filters after resetting adapter. In ixgbe_fdir_filter_restore(), filter's
vf may be zero which makes the queue outside of the rx_ring array.

The calculation is changed to the same as ixgbe_add_ethtool_fdir_entry().

Signed-off-by: Cambda Zhu <cambda@linux.alibaba.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Cambda Zhu 2019-11-27 17:03:55 +08:00 committed by Greg Kroah-Hartman
parent ca60e5ca55
commit 0350ed7bcc
1 changed files with 27 additions and 10 deletions
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37
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
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@ -5131,7 +5131,7 @@ static void ixgbe_fdir_filter_restore(struct ixgbe_adapter *adapter)
struct ixgbe_hw *hw = &adapter->hw;
struct hlist_node *node2;
struct ixgbe_fdir_filter *filter;
u64 action;
u8 queue;
spin_lock(&adapter->fdir_perfect_lock);
@ -5140,17 +5140,34 @@ static void ixgbe_fdir_filter_restore(struct ixgbe_adapter *adapter)
hlist_for_each_entry_safe(filter, node2,
&adapter->fdir_filter_list, fdir_node) {
action = filter->action;
if (action != IXGBE_FDIR_DROP_QUEUE && action != 0)
action =
(action >> ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF) - 1;
if (filter->action == IXGBE_FDIR_DROP_QUEUE) {
queue = IXGBE_FDIR_DROP_QUEUE;
} else {
u32 ring = ethtool_get_flow_spec_ring(filter->action);
u8 vf = ethtool_get_flow_spec_ring_vf(filter->action);
if (!vf && (ring >= adapter->num_rx_queues)) {
e_err(drv, "FDIR restore failed without VF, ring: %u\n",
ring);
continue;
} else if (vf &&
((vf > adapter->num_vfs) ||
ring >= adapter->num_rx_queues_per_pool)) {
e_err(drv, "FDIR restore failed with VF, vf: %hhu, ring: %u\n",
vf, ring);
continue;
}
/* Map the ring onto the absolute queue index */
if (!vf)
queue = adapter->rx_ring[ring]->reg_idx;
else
queue = ((vf - 1) *
adapter->num_rx_queues_per_pool) + ring;
}
ixgbe_fdir_write_perfect_filter_82599(hw,
&filter->filter,
filter->sw_idx,
(action == IXGBE_FDIR_DROP_QUEUE) ?
IXGBE_FDIR_DROP_QUEUE :
adapter->rx_ring[action]->reg_idx);
&filter->filter, filter->sw_idx, queue);
}
spin_unlock(&adapter->fdir_perfect_lock);