> -----Original Message----- > From: Intel-wired-lan <[email protected]> On Behalf Of > Björn Töpel > Sent: Friday, June 12, 2020 4:48 AM > To: [email protected] > Cc: [email protected]; [email protected]; Topel, Bjorn > <[email protected]>; Karlsson, Magnus <[email protected]> > Subject: [Intel-wired-lan] [PATCH net] i40e: fix crash when Rx descriptor > count is changed > > From: Björn Töpel <[email protected]> > > When the AF_XDP buffer allocator was introduced, the Rx SW ring "rx_bi" > allocation was moved from i40e_setup_rx_descriptors() function, and was > instead done in the i40e_configure_rx_ring() function. > > This broke the ethtool set_ringparam() hook for changing the Rx descriptor > count, which was relying on i40e_setup_rx_descriptors() to handle the > alloction. > > Fix this by adding an explicit i40e_alloc_rx_bi() call to > i40e_set_ringparam(). > > Fixes: be1222b585fd ("i40e: Separate kernel allocated rx_bi rings from > AF_XDP rings") > Signed-off-by: Björn Töpel <[email protected]> > --- > drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 3 +++ > 1 file changed, 3 insertions(+)
Tested-by: Andrew Bowers <[email protected]>
