Date: Fri, 4 Aug 2023 01:23:36 GMT From: Kevin Bowling <kbowling@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: d483953e9975 - stable/13 - e1000: lem(4)/em(4) ifcaps, TSO and hwcsum fixes Message-ID: <202308040123.3741NaGP021243@gitrepo.freebsd.org>
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The branch stable/13 has been updated by kbowling: URL: https://cgit.FreeBSD.org/src/commit/?id=d483953e99753ac951c5d56e007ee09b8a3afdd2 commit d483953e99753ac951c5d56e007ee09b8a3afdd2 Author: Kevin Bowling <kbowling@FreeBSD.org> AuthorDate: 2023-07-22 18:33:27 +0000 Commit: Kevin Bowling <kbowling@FreeBSD.org> CommitDate: 2023-08-04 01:21:23 +0000 e1000: lem(4)/em(4) ifcaps, TSO and hwcsum fixes * em(4) obey administrative ifcaps for using hwcsum offload * em(4) obey administrative ifcaps for hw vlan receive tagging * em(4) add additional TSO6 ifcap, but disabled by default as is TSO4 * lem(4) obey administrative ifcaps for using hwcsum offload * lem(4) add support for hw vlan receive tagging * lem(4) Add ifcaps for TSO offload experimentation, but disabled by default due to errata and possibly missing txrx code. * lem(4) disable HWCSUM ifcaps by default on 82547 due to errata around full duplex links. It may still be administratively enabled. Reviewed by: markj (previous version) Differential Revision: https://reviews.freebsd.org/D30072 (cherry picked from commit 918c25677d882a901696672bd4d39b62faa56dfa) --- sys/dev/e1000/em_txrx.c | 15 +++++++------ sys/dev/e1000/if_em.c | 57 ++++++++++++++++++++++++++++++++----------------- 2 files changed, 46 insertions(+), 26 deletions(-) diff --git a/sys/dev/e1000/em_txrx.c b/sys/dev/e1000/em_txrx.c index 47f9b187aa14..069a1c00a4b2 100644 --- a/sys/dev/e1000/em_txrx.c +++ b/sys/dev/e1000/em_txrx.c @@ -674,12 +674,12 @@ lem_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri) i++; } while (!eop); - /* XXX add a faster way to look this up */ - if (sc->hw.mac.type >= e1000_82543) + if (scctx->isc_capenable & IFCAP_RXCSUM) em_receive_checksum(status, errors, ri); - if (status & E1000_RXD_STAT_VP) { - ri->iri_vtag = le16toh(rxd->special); + if (scctx->isc_capenable & IFCAP_VLAN_HWTAGGING && + status & E1000_RXD_STAT_VP) { + ri->iri_vtag = le16toh(rxd->special & E1000_RXD_SPC_VLAN_MASK); ri->iri_flags |= M_VLANTAG; } @@ -699,11 +699,11 @@ em_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri) uint16_t len; uint32_t pkt_info; - uint32_t staterr = 0; + uint32_t staterr; bool eop; int i, cidx; - i = 0; + staterr = i = 0; cidx = ri->iri_cidx; do { @@ -739,7 +739,8 @@ em_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri) if (scctx->isc_capenable & IFCAP_RXCSUM) em_receive_checksum(staterr, staterr >> 24, ri); - if (staterr & E1000_RXD_STAT_VP) { + if (scctx->isc_capenable & IFCAP_VLAN_HWTAGGING && + staterr & E1000_RXD_STAT_VP) { ri->iri_vtag = le16toh(rxd->wb.upper.vlan); ri->iri_flags |= M_VLANTAG; } diff --git a/sys/dev/e1000/if_em.c b/sys/dev/e1000/if_em.c index 09a063191107..6e8970ccf6f6 100644 --- a/sys/dev/e1000/if_em.c +++ b/sys/dev/e1000/if_em.c @@ -783,19 +783,22 @@ em_set_num_queues(if_ctx_t ctx) return (maxqueues); } -#define LEM_CAPS \ - IFCAP_HWCSUM | IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING | \ - IFCAP_VLAN_HWCSUM | IFCAP_WOL | IFCAP_VLAN_HWFILTER - -#define EM_CAPS \ - IFCAP_HWCSUM | IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING | \ - IFCAP_VLAN_HWCSUM | IFCAP_WOL | IFCAP_VLAN_HWFILTER | IFCAP_TSO4 | \ - IFCAP_LRO | IFCAP_VLAN_HWTSO - -#define IGB_CAPS \ - IFCAP_HWCSUM | IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING | \ - IFCAP_VLAN_HWCSUM | IFCAP_WOL | IFCAP_VLAN_HWFILTER | IFCAP_TSO4 | \ - IFCAP_LRO | IFCAP_VLAN_HWTSO | IFCAP_JUMBO_MTU | IFCAP_HWCSUM_IPV6 |\ +#define LEM_CAPS \ + IFCAP_HWCSUM | IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING | \ + IFCAP_VLAN_HWCSUM | IFCAP_WOL | IFCAP_VLAN_HWFILTER | IFCAP_TSO4 | \ + IFCAP_LRO | IFCAP_VLAN_HWTSO| IFCAP_JUMBO_MTU | IFCAP_HWCSUM_IPV6 | \ + IFCAP_TSO6 + +#define EM_CAPS \ + IFCAP_HWCSUM | IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING | \ + IFCAP_VLAN_HWCSUM | IFCAP_WOL | IFCAP_VLAN_HWFILTER | IFCAP_TSO4 | \ + IFCAP_LRO | IFCAP_VLAN_HWTSO | IFCAP_JUMBO_MTU | IFCAP_HWCSUM_IPV6 | \ + IFCAP_TSO6 + +#define IGB_CAPS \ + IFCAP_HWCSUM | IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING | \ + IFCAP_VLAN_HWCSUM | IFCAP_WOL | IFCAP_VLAN_HWFILTER | IFCAP_TSO4 | \ + IFCAP_LRO | IFCAP_VLAN_HWTSO | IFCAP_JUMBO_MTU | IFCAP_HWCSUM_IPV6 | \ IFCAP_TSO6 /********************************************************************* @@ -899,7 +902,7 @@ em_if_attach_pre(if_ctx_t ctx) scctx->isc_tx_tso_segsize_max = EM_TSO_SEG_SIZE; scctx->isc_capabilities = scctx->isc_capenable = EM_CAPS; /* - * For EM-class devices, don't enable IFCAP_{TSO4,VLAN_HWTSO} + * For EM-class devices, don't enable IFCAP_{TSO4,VLAN_HWTSO,TSO6} * by default as we don't have workarounds for all associated * silicon errata. E. g., with several MACs such as 82573E, * TSO only works at Gigabit speed and otherwise can cause the @@ -914,8 +917,9 @@ em_if_attach_pre(if_ctx_t ctx) * work for a few MACs of this class - at least when sticking * with Gigabit - in which case users may enable TSO manually. */ - scctx->isc_capenable &= ~(IFCAP_TSO4 | IFCAP_VLAN_HWTSO); - scctx->isc_tx_csum_flags = CSUM_TCP | CSUM_UDP | CSUM_IP_TSO; + scctx->isc_capenable &= ~(IFCAP_TSO4 | IFCAP_VLAN_HWTSO | IFCAP_TSO6); + scctx->isc_tx_csum_flags = CSUM_TCP | CSUM_UDP | CSUM_IP_TSO | + CSUM_IP6_TCP | CSUM_IP6_UDP; /* * We support MSI-X with 82574 only, but indicate to iflib(4) * that it shall give MSI at least a try with other devices. @@ -931,9 +935,25 @@ em_if_attach_pre(if_ctx_t ctx) scctx->isc_rxqsizes[0] = roundup2((scctx->isc_nrxd[0] + 1) * sizeof(struct e1000_rx_desc), EM_DBA_ALIGN); scctx->isc_txd_size[0] = sizeof(struct e1000_tx_desc); scctx->isc_rxd_size[0] = sizeof(struct e1000_rx_desc); - scctx->isc_tx_csum_flags = CSUM_TCP | CSUM_UDP; scctx->isc_txrx = &lem_txrx; - scctx->isc_capabilities = LEM_CAPS; + scctx->isc_tx_tso_segments_max = EM_MAX_SCATTER; + scctx->isc_tx_tso_size_max = EM_TSO_SIZE; + scctx->isc_tx_tso_segsize_max = EM_TSO_SEG_SIZE; + scctx->isc_capabilities = scctx->isc_capenable = EM_CAPS; + /* + * For LEM-class devices, don't enable IFCAP_{TSO4,VLAN_HWTSO,TSO6} + * by default as we don't have workarounds for all associated + * silicon errata. TSO4 may work on > 82544 but its status + * is unknown by the authors. Please report any success or failures. + */ + scctx->isc_capenable &= ~(IFCAP_TSO4 | IFCAP_VLAN_HWTSO | IFCAP_TSO6); + scctx->isc_tx_csum_flags = CSUM_TCP | CSUM_UDP | CSUM_IP_TSO | + CSUM_IP6_TCP | CSUM_IP6_UDP; + + /* 8254x SDM4.0 page 33 - FDX requirement on these chips */ + if (hw->mac.type == e1000_82547 || hw->mac.type == e1000_82547_rev_2) + scctx->isc_capenable &= ~(IFCAP_HWCSUM|IFCAP_VLAN_HWCSUM); + if (hw->mac.type < e1000_82543) scctx->isc_capabilities &= ~(IFCAP_HWCSUM|IFCAP_VLAN_HWCSUM); /* 82541ER doesn't do HW tagging */ @@ -941,7 +961,6 @@ em_if_attach_pre(if_ctx_t ctx) scctx->isc_capabilities &= ~IFCAP_VLAN_HWTAGGING; /* INTx only */ scctx->isc_msix_bar = 0; - scctx->isc_capenable = scctx->isc_capabilities; } /* Setup PCI resources */
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