[PATCH v2 7/7] net/ixgbe: Treat 1G Cu SFPs as 1G SX on the X550 devices
From: Stephen Douthit <hidden>
Date: 2021-12-06 22:20:35
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
1G Cu SFPs are not officially supported on the X552/X553 family of devices but treat them as 1G SX modules since they usually work. Print a warning though since support isn't validated, similar to what already happens for other unofficially supported SFPs enabled via the allow_unsupported_sfps parameter inherited from the mainline Linux driver. Signed-off-by: Stephen Douthit <redacted> --- drivers/net/ixgbe/base/ixgbe_x550.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ixgbe/base/ixgbe_x550.c b/drivers/net/ixgbe/base/ixgbe_x550.c
index 8810d1658e..8d1bc6c80d 100644
--- a/drivers/net/ixgbe/base/ixgbe_x550.c
+++ b/drivers/net/ixgbe/base/ixgbe_x550.c@@ -1538,9 +1538,21 @@ STATIC s32 ixgbe_supported_sfp_modules_X550em(struct ixgbe_hw *hw, bool *linear) case ixgbe_sfp_type_1g_lha_core1: *linear = false; break; - case ixgbe_sfp_type_unknown: + /* Copper SFPs are not officially supported for x550em devices, but can + * often be made to work at fixed 1G speeds. Pretend they're 1g_sx + * modules here to allow g.Fast DSL SFPs to work. + */ case ixgbe_sfp_type_1g_cu_core0: + EWARN(hw, "Pretending that unsupported 1g_cu SFP is 1g_sx\n"); + *linear = false; + hw->phy.sfp_type = ixgbe_sfp_type_1g_sx_core0; + break; case ixgbe_sfp_type_1g_cu_core1: + EWARN(hw, "Pretending that unsupported 1g_cu SFP is 1g_sx\n"); + *linear = false; + hw->phy.sfp_type = ixgbe_sfp_type_1g_sx_core1; + break; + case ixgbe_sfp_type_unknown: default: return IXGBE_ERR_SFP_NOT_SUPPORTED; }
--
2.31.1