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ethtool: add support to set/get completion queue event size

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Add support to set completion queue event size via ethtool -G
parameter and get it via ethtool -g parameter.

~ # ./ethtool -G eth0 cqe-size 512
~ # ./ethtool -g eth0
Ring parameters for eth0:
Pre-set maximums:
RX:             1048576
RX Mini:        n/a
RX Jumbo:       n/a
TX:             1048576
Current hardware settings:
RX:             256
RX Mini:        n/a
RX Jumbo:       n/a
TX:             4096
RX Buf Len:             2048
CQE Size:                128

Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Subbaraya Sundeep
2022-02-23 00:09:12 +05:30
committed by Jakub Kicinski
parent 6a47cdc381
commit 1241e329ce
5 changed files with 34 additions and 3 deletions
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4
include/linux/ethtool.h
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@@ -71,18 +71,22 @@ enum {
* struct kernel_ethtool_ringparam - RX/TX ring configuration
* @rx_buf_len: Current length of buffers on the rx ring.
* @tcp_data_split: Scatter packet headers and data to separate buffers
* @cqe_size: Size of TX/RX completion queue event
*/
struct kernel_ethtool_ringparam {
u32 rx_buf_len;
u8 tcp_data_split;
u32 cqe_size;
};
/**
* enum ethtool_supported_ring_param - indicator caps for setting ring params
* @ETHTOOL_RING_USE_RX_BUF_LEN: capture for setting rx_buf_len
* @ETHTOOL_RING_USE_CQE_SIZE: capture for setting cqe_size
*/
enum ethtool_supported_ring_param {
ETHTOOL_RING_USE_RX_BUF_LEN = BIT(0),
ETHTOOL_RING_USE_CQE_SIZE = BIT(1),
};
#define __ETH_RSS_HASH_BIT(bit) ((u32)1 << (bit))