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ethtool: provide channel counts with CHANNELS_GET request
Implement CHANNELS_GET request to get channel counts of a network device. These are traditionally available via ETHTOOL_GCHANNELS ioctl request. Omit attributes for channel types which are not supported by driver or device (zero reported for maximum). v2: (all suggested by Jakub Kicinski) - minor cleanup in channels_prepare_data() - more descriptive channels_reply_size() - omit attributes with zero max count Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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bc9d1c995e
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0c84979c95
6 changed files with 169 additions and 2 deletions
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@ -30,6 +30,7 @@ enum {
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ETHTOOL_MSG_PRIVFLAGS_SET,
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ETHTOOL_MSG_RINGS_GET,
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ETHTOOL_MSG_RINGS_SET,
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ETHTOOL_MSG_CHANNELS_GET,
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/* add new constants above here */
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__ETHTOOL_MSG_USER_CNT,
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@ -56,6 +57,7 @@ enum {
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ETHTOOL_MSG_PRIVFLAGS_NTF,
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ETHTOOL_MSG_RINGS_GET_REPLY,
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ETHTOOL_MSG_RINGS_NTF,
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ETHTOOL_MSG_CHANNELS_GET_REPLY,
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/* add new constants above here */
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__ETHTOOL_MSG_KERNEL_CNT,
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@ -287,6 +289,25 @@ enum {
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ETHTOOL_A_RINGS_MAX = (__ETHTOOL_A_RINGS_CNT - 1)
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};
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/* CHANNELS */
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enum {
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ETHTOOL_A_CHANNELS_UNSPEC,
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ETHTOOL_A_CHANNELS_HEADER, /* nest - _A_HEADER_* */
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ETHTOOL_A_CHANNELS_RX_MAX, /* u32 */
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ETHTOOL_A_CHANNELS_TX_MAX, /* u32 */
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ETHTOOL_A_CHANNELS_OTHER_MAX, /* u32 */
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ETHTOOL_A_CHANNELS_COMBINED_MAX, /* u32 */
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ETHTOOL_A_CHANNELS_RX_COUNT, /* u32 */
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ETHTOOL_A_CHANNELS_TX_COUNT, /* u32 */
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ETHTOOL_A_CHANNELS_OTHER_COUNT, /* u32 */
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ETHTOOL_A_CHANNELS_COMBINED_COUNT, /* u32 */
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/* add new constants above here */
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__ETHTOOL_A_CHANNELS_CNT,
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ETHTOOL_A_CHANNELS_MAX = (__ETHTOOL_A_CHANNELS_CNT - 1)
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};
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/* generic netlink info */
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#define ETHTOOL_GENL_NAME "ethtool"
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#define ETHTOOL_GENL_VERSION 1
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