net/gve: fix Rx buffer size alignment

In GVE, both queue formats have RX buffer size alignment requirements
which will not always be respected when a user specifies an mbuf size.
Assuming that an mbuf size is greater than the DPDK recommended default
(2048 + 128), if the buffer size is not properly aligned with what the
device expects, the device will silently fail to create any transmit or
receive queues.

Because no queues are created, there is no network traffic for the DPDK
program, and errors like the following are returned when attempting to
destroy queues:

gve_adminq_parse_err(): AQ command failed with status -11
gve_stop_tx_queues(): failed to destroy txqs
gve_adminq_parse_err(): AQ command failed with status -11
gve_stop_rx_queues(): failed to destroy rxqs

This change aims to remedy this by restricting the RX receive buffer
sizes to valid sizes for their respective queue formats, including both
alignment and minimum and maximum supported buffer sizes.

Fixes: 4bec2d0b5572 ("net/gve: support queue operations")
Fixes: 1dc00f4fc74b ("net/gve: add Rx queue setup for DQO")
Cc: stable@dpdk.org

Signed-off-by: Joshua Washington <joshwash@google.com>
Reviewed-by: Rushil Gupta <rushilg@google.com>
Acked-by: Junfeng Guo <junfeng.guo@intel.com>

0 files changed, 0 insertions, 0 deletions