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7237f5b0db
Add an ethtool "legacy-rx" priv flag for toggling the Rx path. This control knob will be mainly used for build_skb usage as well as buffer size/MTU manipulation. In preparation for adding build_skb support in a way that it takes care of how we set the values of max_frame and rx_buf_len fields of struct ice_vsi. Specifically, in this patch mentioned fields are set to values that will allow us to provide headroom and tailroom in-place. This can be mostly broken down onto following: - for legacy-rx "on" ethtool control knob, old behaviour is kept; - for standard 1500 MTU size configure the buffer of size 1536, as network stack is expecting the NET_SKB_PAD to be provided and NET_IP_ALIGN can have a non-zero value (these can be typically equal to 32 and 2, respectively); - for larger MTUs go with max_frame set to 9k and configure the 3k buffer in case when PAGE_SIZE of underlying arch is less than 8k; 3k buffer is implying the need for order 1 page, so that our page recycling scheme can still be applied; With that said, substitute the hardcoded ICE_RXBUF_2048 and PAGE_SIZE values in DMA API that we're making use of with rx_ring->rx_buf_len and ice_rx_pg_size(rx_ring). The latter is an introduced helper for determining the page size based on its order (which was figured out via ice_rx_pg_order). Last but not least, take care of truesize calculation. In the followup patch the headroom/tailroom computation logic will be introduced. This change aligns the buffer and frame configuration with other Intel drivers, most importantly with iavf. Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> |
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| .. | ||
| ice_adminq_cmd.h | ||
| ice_base.c | ||
| ice_base.h | ||
| ice_common.c | ||
| ice_common.h | ||
| ice_controlq.c | ||
| ice_controlq.h | ||
| ice_dcb_lib.c | ||
| ice_dcb_lib.h | ||
| ice_dcb.c | ||
| ice_dcb.h | ||
| ice_devids.h | ||
| ice_ethtool.c | ||
| ice_flex_pipe.c | ||
| ice_flex_pipe.h | ||
| ice_flex_type.h | ||
| ice_hw_autogen.h | ||
| ice_lan_tx_rx.h | ||
| ice_lib.c | ||
| ice_lib.h | ||
| ice_main.c | ||
| ice_nvm.c | ||
| ice_osdep.h | ||
| ice_sched.c | ||
| ice_sched.h | ||
| ice_sriov.c | ||
| ice_sriov.h | ||
| ice_status.h | ||
| ice_switch.c | ||
| ice_switch.h | ||
| ice_txrx_lib.c | ||
| ice_txrx_lib.h | ||
| ice_txrx.c | ||
| ice_txrx.h | ||
| ice_type.h | ||
| ice_virtchnl_pf.c | ||
| ice_virtchnl_pf.h | ||
| ice_xsk.c | ||
| ice_xsk.h | ||
| ice.h | ||
| Makefile | ||