[PATCH net-next v5 1/8] net: phylink: Document MAC_(A)SYM_PAUSE
From: Sean Anderson <hidden>
Date: 2022-09-06 16:41:27
Also in:
lkml
Subsystem:
sff/sfp/sfp+ module support, the rest · Maintainers:
Russell King, Linus Torvalds
This documents the possible MLO_PAUSE_* settings which can result from different combinations of MLO_(A)SYM_PAUSE. These are more-or-less a direct consequence of IEEE 802.3 Table 28B-2. Signed-off-by: Sean Anderson <redacted> --- (no changes since v3) Changes in v3: - New include/linux/phylink.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/include/linux/phylink.h b/include/linux/phylink.h
index 6d06896fc20d..a431a0b0d217 100644
--- a/include/linux/phylink.h
+++ b/include/linux/phylink.h@@ -21,6 +21,22 @@ enum { MLO_AN_FIXED, /* Fixed-link mode */ MLO_AN_INBAND, /* In-band protocol */ + /* MAC_SYM_PAUSE and MAC_ASYM_PAUSE correspond to the PAUSE and + * ASM_DIR bits used in autonegotiation, respectively. See IEEE 802.3 + * Annex 28B for more information. + * + * The following table lists the values of MLO_PAUSE_* (aside from + * MLO_PAUSE_AN) which might be requested depending on the results of + * autonegotiation or user configuration: + * + * MAC_SYM_PAUSE MAC_ASYM_PAUSE Valid pause modes + * ============= ============== ============================== + * 0 0 MLO_PAUSE_NONE + * 0 1 MLO_PAUSE_NONE, MLO_PAUSE_TX + * 1 0 MLO_PAUSE_NONE, MLO_PAUSE_TXRX + * 1 1 MLO_PAUSE_NONE, MLO_PAUSE_TXRX, + * MLO_PAUSE_RX + */ MAC_SYM_PAUSE = BIT(0), MAC_ASYM_PAUSE = BIT(1), MAC_10HD = BIT(2),
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2.35.1.1320.gc452695387.dirty