e1000: disable TSO on lem(4) and em(4)
Disable TSO on lem(4) and em(4) until a ring stall can be debugged. I am not able to reproduce the issue on lem(4) but disabling there in abundance of caution in case the issue is not specific to em(4). Reported by: grog
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@ -906,6 +906,9 @@ em_if_attach_pre(if_ctx_t ctx)
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scctx->isc_tx_csum_flags = CSUM_TCP | CSUM_UDP | CSUM_IP_TSO |
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CSUM_IP6_TCP | CSUM_IP6_UDP;
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/* Disable TSO on all em(4) until ring stalls can be debugged */
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scctx->isc_capenable &= ~IFCAP_TSO;
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/*
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* Disable TSO on SPT due to errata that downclocks DMA performance
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* i218-i219 Specification Update 1.5.4.5
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@ -938,6 +941,9 @@ em_if_attach_pre(if_ctx_t ctx)
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scctx->isc_tx_csum_flags = CSUM_TCP | CSUM_UDP | CSUM_IP_TSO |
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CSUM_IP6_TCP | CSUM_IP6_UDP;
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/* Disable TSO on all lem(4) until ring stalls can be debugged */
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scctx->isc_capenable &= ~IFCAP_TSO;
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/* 82541ER doesn't do HW tagging */
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if (hw->device_id == E1000_DEV_ID_82541ER ||
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hw->device_id == E1000_DEV_ID_82541ER_LOM) {
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