net: stmmac: fix CBS idleslope and sendslope calculation

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When link speed is not 100 Mbps, port transmit rate and speed divider
are set to 8 and 1000000 respectively. These values are incorrect for
CBS idleslope and sendslope HW values calculation if the link speed is
not 1 Gbps.

This patch adds switch statement to set the values of port transmit rate
and speed divider for 10 Gbps, 5 Gbps, 2.5 Gbps, 1 Gbps, and 100 Mbps.
Note that CBS is not supported at 10 Mbps.

Fixes: bc41a6689b ("net: stmmac: tc: Remove the speed dependency")
Fixes: 1f705bc61a ("net: stmmac: Add support for CBS QDISC")
Signed-off-by: Song, Yoong Siang <yoong.siang.song@intel.com>
Link: https://lore.kernel.org/r/1613655653-11755-1-git-send-email-yoong.siang.song@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Song, Yoong Siang 2021-02-18 21:40:53 +08:00 • committed by Jakub Kicinski

parent e5bcf0e879

commit 24877687b3

1 changed files with 26 additions and 4 deletions

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drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c

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