From 545779a99290b7b7d94dece6c096ce230be91ff9 Mon Sep 17 00:00:00 2001 From: Kevin Bowling Date: Thu, 6 Aug 2026 01:21:35 -0700 Subject: [PATCH] ixgbe: Re-enable the SFP laser during initialization ixgbe_if_stop() disables the transmit laser on every 82599 SFP fiber port, but the iflib initialization path did not re-enable it. Re-enable the laser before deferred SFP module setup so interface reinitialization cannot leave either single-speed or multispeed optics dark. The hardware wrapper is a no-op when laser control is unavailable. The placement follows Intel ix-3.4.39; this version deliberately applies to every SFP port affected by the stop path. MFC after: 1 week --- sys/dev/ixgbe/if_ix.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/dev/ixgbe/if_ix.c b/sys/dev/ixgbe/if_ix.c index 519c82304f54..96188ca7ef7f 100644 --- a/sys/dev/ixgbe/if_ix.c +++ b/sys/dev/ixgbe/if_ix.c @@ -1836,6 +1836,8 @@ ixgbe_config_link(if_ctx_t ctx) sfp = ixgbe_is_sfp(hw); if (sfp) { + /* ixgbe_if_stop() disables it on every 82599 SFP port. */ + ixgbe_enable_tx_laser(hw); sc->task_requests |= IXGBE_REQUEST_TASK_MOD; iflib_admin_intr_deferred(ctx); } else {