On 09 Dec 10:54, Tony Nguyen wrote:
From: Bartosz Staszewski <bartoszx.staszewski@xxxxxxxxx>
Whenever trying to load XDP prog on downed interface, function i40e_xdp
was passing vsi->rx_buf_len field to i40e_xdp_setup() which was equal 0.
i40e_open() calls i40e_vsi_configure_rx() which configures that field,
but that only happens when interface is up. When it is down, i40e_open()
is not being called, thus vsi->rx_buf_len is not set.
Solution for this is calculate buffer length in newly created
function - i40e_calculate_vsi_rx_buf_len() that return actual buffer
length. Buffer length is being calculated based on the same rules
applied previously in i40e_vsi_configure_rx() function.
Fixes: 613142b0bb88 ("i40e: Log error for oversized MTU on device")
Fixes: 0c8493d90b6b ("i40e: add XDP support for pass and drop actions")
Signed-off-by: Bartosz Staszewski <bartoszx.staszewski@xxxxxxxxx>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@xxxxxxxxx>
Tested-by: Shwetha Nagaraju <Shwetha.nagaraju@xxxxxxxxx>
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@xxxxxxxxx>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx>
---
v3:
- Remove unnecessary braces and parentheses
- Simplify return in i40e_calculate_vsi_rx_buf_len(); return early on
if conditions and remove elses
Reviewed-by: Saeed Mahameed <saeed@xxxxxxxxxx>
