Date: Tue, 20 Jul 2021 07:11:42 GMT From: Kevin Bowling <kbowling@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 41f02257146d - main - e1000: Clean up igb_txrx Message-ID: <202107200711.16K7Bgfc034695@gitrepo.freebsd.org>
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The branch main has been updated by kbowling (ports committer): URL: https://cgit.FreeBSD.org/src/commit/?id=41f02257146d128cdd4aa2bdcfdab7f9e08a4314 commit 41f02257146d128cdd4aa2bdcfdab7f9e08a4314 Author: Kevin Bowling <kbowling@FreeBSD.org> AuthorDate: 2021-07-20 07:06:31 +0000 Commit: Kevin Bowling <kbowling@FreeBSD.org> CommitDate: 2021-07-20 07:11:30 +0000 e1000: Clean up igb_txrx The intention here is to reduce differences between em, igb, igc, ixgbe. The main functional change is logical simplification in igb_rx_checksum and getting interface caps from scctx instead of the ifp. Reviewed by: gallatin, markj MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D30073 --- sys/dev/e1000/igb_txrx.c | 119 +++++++++++++++++++++++------------------------ 1 file changed, 59 insertions(+), 60 deletions(-) diff --git a/sys/dev/e1000/igb_txrx.c b/sys/dev/e1000/igb_txrx.c index 9f1921bf0c7e..ac768f84f810 100644 --- a/sys/dev/e1000/igb_txrx.c +++ b/sys/dev/e1000/igb_txrx.c @@ -1,4 +1,6 @@ /*- + * SPDX-License-Identifier: BSD-2-Clause + * * Copyright (c) 2016 Matthew Macy <mmacy@mattmacy.io> * All rights reserved. * @@ -47,16 +49,20 @@ static int igb_isc_txd_credits_update(void *arg, uint16_t txqid, bool clear); static void igb_isc_rxd_refill(void *arg, if_rxd_update_t iru); -static void igb_isc_rxd_flush(void *arg, uint16_t rxqid, uint8_t flid __unused, qidx_t pidx); -static int igb_isc_rxd_available(void *arg, uint16_t rxqid, qidx_t idx, qidx_t budget); +static void igb_isc_rxd_flush(void *arg, uint16_t rxqid, uint8_t flid __unused, + qidx_t pidx); +static int igb_isc_rxd_available(void *arg, uint16_t rxqid, qidx_t idx, + qidx_t budget); static int igb_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri); -static int igb_tx_ctx_setup(struct tx_ring *txr, if_pkt_info_t pi, u32 *cmd_type_len, u32 *olinfo_status); -static int igb_tso_setup(struct tx_ring *txr, if_pkt_info_t pi, u32 *cmd_type_len, u32 *olinfo_status); +static int igb_tx_ctx_setup(struct tx_ring *txr, if_pkt_info_t pi, + uint32_t *cmd_type_len, uint32_t *olinfo_status); +static int igb_tso_setup(struct tx_ring *txr, if_pkt_info_t pi, + uint32_t *cmd_type_len, uint32_t *olinfo_status); -static void igb_rx_checksum(u32 staterr, if_rxd_info_t ri, u32 ptype); -static int igb_determine_rsstype(u16 pkt_info); +static void igb_rx_checksum(uint32_t staterr, if_rxd_info_t ri, uint32_t ptype); +static int igb_determine_rsstype(uint16_t pkt_info); extern void igb_if_enable_intr(if_ctx_t ctx); extern int em_intr(void *arg); @@ -79,13 +85,14 @@ struct if_txrx igb_txrx = { * **********************************************************************/ static int -igb_tso_setup(struct tx_ring *txr, if_pkt_info_t pi, u32 *cmd_type_len, u32 *olinfo_status) +igb_tso_setup(struct tx_ring *txr, if_pkt_info_t pi, uint32_t *cmd_type_len, + uint32_t *olinfo_status) { struct e1000_adv_tx_context_desc *TXD; struct adapter *adapter = txr->adapter; - u32 type_tucmd_mlhl = 0, vlan_macip_lens = 0; - u32 mss_l4len_idx = 0; - u32 paylen; + uint32_t type_tucmd_mlhl = 0, vlan_macip_lens = 0; + uint32_t mss_l4len_idx = 0; + uint32_t paylen; switch(pi->ipi_etype) { case ETHERTYPE_IPV6: @@ -143,12 +150,13 @@ igb_tso_setup(struct tx_ring *txr, if_pkt_info_t pi, u32 *cmd_type_len, u32 *oli * **********************************************************************/ static int -igb_tx_ctx_setup(struct tx_ring *txr, if_pkt_info_t pi, u32 *cmd_type_len, u32 *olinfo_status) +igb_tx_ctx_setup(struct tx_ring *txr, if_pkt_info_t pi, uint32_t *cmd_type_len, + uint32_t *olinfo_status) { struct e1000_adv_tx_context_desc *TXD; - struct adapter *adapter = txr->adapter; - u32 vlan_macip_lens, type_tucmd_mlhl; - u32 mss_l4len_idx; + struct adapter *adapter = txr->adapter; + uint32_t vlan_macip_lens, type_tucmd_mlhl; + uint32_t mss_l4len_idx; mss_l4len_idx = vlan_macip_lens = type_tucmd_mlhl = 0; /* First check if TSO is to be used */ @@ -162,7 +170,7 @@ igb_tx_ctx_setup(struct tx_ring *txr, if_pkt_info_t pi, u32 *cmd_type_len, u32 * TXD = (struct e1000_adv_tx_context_desc *) &txr->tx_base[pi->ipi_pidx]; /* - ** In advanced descriptors the vlan tag must + ** In advanced descriptors the vlan tag must ** be placed into the context descriptor. Hence ** we need to make one even if not doing offloads. */ @@ -171,7 +179,7 @@ igb_tx_ctx_setup(struct tx_ring *txr, if_pkt_info_t pi, u32 *cmd_type_len, u32 * } else if ((pi->ipi_csum_flags & IGB_CSUM_OFFLOAD) == 0) { return (0); } - + /* Set the ether header length */ vlan_macip_lens |= pi->ipi_ehdrlen << E1000_ADVTXD_MACLEN_SHIFT; @@ -236,7 +244,7 @@ igb_isc_txd_encap(void *arg, if_pkt_info_t pi) bus_dma_segment_t *segs = pi->ipi_segs; union e1000_adv_tx_desc *txd = NULL; int i, j, pidx_last; - u32 olinfo_status, cmd_type_len, txd_flags; + uint32_t olinfo_status, cmd_type_len, txd_flags; qidx_t ntxd; pidx_last = olinfo_status = 0; @@ -395,7 +403,7 @@ igb_isc_rxd_available(void *arg, uint16_t rxqid, qidx_t idx, qidx_t budget) struct em_rx_queue *que = &sc->rx_queues[rxqid]; struct rx_ring *rxr = &que->rxr; union e1000_adv_rx_desc *rxd; - u32 staterr = 0; + uint32_t staterr = 0; int cnt, i; for (cnt = 0, i = idx; cnt < scctx->isc_nrxd[0] && cnt <= budget;) { @@ -426,16 +434,15 @@ igb_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri) if_softc_ctx_t scctx = adapter->shared; struct em_rx_queue *que = &adapter->rx_queues[ri->iri_qsidx]; struct rx_ring *rxr = &que->rxr; - struct ifnet *ifp = iflib_get_ifp(adapter->ctx); union e1000_adv_rx_desc *rxd; - u16 pkt_info, len; - u16 vtag = 0; - u32 ptype; - u32 staterr = 0; + uint16_t pkt_info, len, vtag; + uint32_t ptype, staterr; + int i, cidx; bool eop; - int i = 0; - int cidx = ri->iri_cidx; + + staterr = i = vtag = 0; + cidx = ri->iri_cidx; do { rxd = (union e1000_adv_rx_desc *)&rxr->rx_base[cidx]; @@ -485,14 +492,15 @@ igb_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri) rxr->rx_packets++; - if ((ifp->if_capenable & IFCAP_RXCSUM) != 0) + if ((scctx->isc_capenable & IFCAP_RXCSUM) != 0) igb_rx_checksum(staterr, ri, ptype); - if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0 && + if ((scctx->isc_capenable & IFCAP_VLAN_HWTAGGING) != 0 && (staterr & E1000_RXD_STAT_VP) != 0) { ri->iri_vtag = vtag; ri->iri_flags |= M_VLANTAG; } + ri->iri_flowid = le32toh(rxd->wb.lower.hi_dword.rss); ri->iri_rsstype = igb_determine_rsstype(pkt_info); @@ -509,46 +517,37 @@ igb_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri) * *********************************************************************/ static void -igb_rx_checksum(u32 staterr, if_rxd_info_t ri, u32 ptype) +igb_rx_checksum(uint32_t staterr, if_rxd_info_t ri, uint32_t ptype) { - u16 status = (u16)staterr; - u8 errors = (u8) (staterr >> 24); - bool sctp = FALSE; + uint16_t status = (uint16_t)staterr; + uint8_t errors = (uint8_t)(staterr >> 24); /* Ignore Checksum bit is set */ - if (status & E1000_RXD_STAT_IXSM) { - ri->iri_csum_flags = 0; + if (__predict_false(status & E1000_RXD_STAT_IXSM)) return; - } - if ((ptype & E1000_RXDADV_PKTTYPE_ETQF) == 0 && - (ptype & E1000_RXDADV_PKTTYPE_SCTP) != 0) - sctp = 1; - else - sctp = 0; - - if (status & E1000_RXD_STAT_IPCS) { - /* Did it pass? */ - if (!(errors & E1000_RXD_ERR_IPE)) { - /* IP Checksum Good */ - ri->iri_csum_flags = CSUM_IP_CHECKED; - ri->iri_csum_flags |= CSUM_IP_VALID; - } else - ri->iri_csum_flags = 0; - } + /* If there is a layer 3 or 4 error we are done */ + if (errors & (E1000_RXD_ERR_IPE | E1000_RXD_ERR_TCPE)) + return; - if (status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) { - u64 type = (CSUM_DATA_VALID | CSUM_PSEUDO_HDR); - if (sctp) /* reassign */ - type = CSUM_SCTP_VALID; - /* Did it pass? */ - if (!(errors & E1000_RXD_ERR_TCPE)) { - ri->iri_csum_flags |= type; - if (sctp == 0) - ri->iri_csum_data = htons(0xffff); + /* IP Checksum Good */ + if (status & E1000_RXD_STAT_IPCS) + ri->iri_csum_flags = (CSUM_IP_CHECKED | CSUM_IP_VALID); + + /* Valid L4E checksum */ + if (__predict_true(status & + (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) { + /* SCTP header present. + * XXXKB: ETQF doesn't appear to be used in igb? + */ + if (__predict_false((ptype & E1000_RXDADV_PKTTYPE_ETQF) == 0 && + (ptype & E1000_RXDADV_PKTTYPE_SCTP) != 0)) { + ri->iri_csum_flags |= CSUM_SCTP_VALID; + } else { + ri->iri_csum_flags |= CSUM_DATA_VALID | CSUM_PSEUDO_HDR; + ri->iri_csum_data = htons(0xffff); } } - return; } /******************************************************************** @@ -557,7 +556,7 @@ igb_rx_checksum(u32 staterr, if_rxd_info_t ri, u32 ptype) * ******************************************************************/ static int -igb_determine_rsstype(u16 pkt_info) +igb_determine_rsstype(uint16_t pkt_info) { switch (pkt_info & E1000_RXDADV_RSSTYPE_MASK) { case E1000_RXDADV_RSSTYPE_IPV4_TCP:
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