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net: iflib: fix vlan processing in the drivers
The logic that sets iri_vtag and M_VLANTAG does not handle the case where the 802.11q VLAN tag is 0. Fix this issue across the iflib drivers. While there, also improve and align the VLAN tag check extraction, by moving it outside the RX descriptor loop, eliminating a local variable and additional checks. PR: 260068 Reviewed by: kbowling, gallatin Reported by: erj MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D33156
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@ -671,9 +671,9 @@ em_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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u32 pkt_info;
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u32 staterr = 0;
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bool eop;
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int i, cidx, vtag;
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int i, cidx;
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i = vtag = 0;
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i = 0;
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cidx = ri->iri_cidx;
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do {
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@ -710,12 +710,9 @@ em_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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em_receive_checksum(staterr, staterr >> 24, ri);
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if (staterr & E1000_RXD_STAT_VP) {
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vtag = le16toh(rxd->wb.upper.vlan);
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}
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ri->iri_vtag = vtag;
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if (vtag)
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ri->iri_vtag = le16toh(rxd->wb.upper.vlan);
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ri->iri_flags |= M_VLANTAG;
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}
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ri->iri_flowid = le32toh(rxd->wb.lower.hi_dword.rss);
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ri->iri_rsstype = em_determine_rsstype(pkt_info);
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@ -436,12 +436,12 @@ igb_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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struct rx_ring *rxr = &que->rxr;
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union e1000_adv_rx_desc *rxd;
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uint16_t pkt_info, len, vtag;
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uint16_t pkt_info, len;
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uint32_t ptype, staterr;
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int i, cidx;
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bool eop;
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staterr = i = vtag = 0;
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staterr = i = 0;
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cidx = ri->iri_cidx;
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do {
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@ -460,13 +460,6 @@ igb_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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rxd->wb.upper.status_error = 0;
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eop = ((staterr & E1000_RXD_STAT_EOP) == E1000_RXD_STAT_EOP);
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if (((sc->hw.mac.type == e1000_i350) ||
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(sc->hw.mac.type == e1000_i354)) &&
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(staterr & E1000_RXDEXT_STATERR_LB))
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vtag = be16toh(rxd->wb.upper.vlan);
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else
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vtag = le16toh(rxd->wb.upper.vlan);
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/* Make sure bad packets are discarded */
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if (eop && ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) != 0)) {
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sc->dropped_pkts++;
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@ -495,9 +488,13 @@ igb_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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if ((scctx->isc_capenable & IFCAP_RXCSUM) != 0)
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igb_rx_checksum(staterr, ri, ptype);
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if ((scctx->isc_capenable & IFCAP_VLAN_HWTAGGING) != 0 &&
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(staterr & E1000_RXD_STAT_VP) != 0) {
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ri->iri_vtag = vtag;
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if (staterr & E1000_RXD_STAT_VP) {
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if (((sc->hw.mac.type == e1000_i350) ||
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(sc->hw.mac.type == e1000_i354)) &&
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(staterr & E1000_RXDEXT_STATERR_LB))
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ri->iri_vtag = be16toh(rxd->wb.upper.vlan);
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else
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ri->iri_vtag = le16toh(rxd->wb.upper.vlan);
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ri->iri_flags |= M_VLANTAG;
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}
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@ -670,7 +670,7 @@ iavf_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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struct rx_ring *rxr = &que->rxr;
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union iavf_rx_desc *cur;
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u32 status, error;
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u16 plen, vtag;
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u16 plen;
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u64 qword;
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u8 ptype;
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bool eop;
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@ -701,10 +701,6 @@ iavf_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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cur->wb.qword1.status_error_len = 0;
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eop = (status & (1 << IAVF_RX_DESC_STATUS_EOF_SHIFT));
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if (status & (1 << IAVF_RX_DESC_STATUS_L2TAG1P_SHIFT))
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vtag = le16toh(cur->wb.qword0.lo_dword.l2tag1);
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else
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vtag = 0;
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/*
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** Make sure bad packets are discarded,
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@ -731,10 +727,11 @@ iavf_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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iavf_rx_checksum(ri, status, error, ptype);
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ri->iri_flowid = le32toh(cur->wb.qword0.hi_dword.rss);
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ri->iri_rsstype = iavf_ptype_to_hash(ptype);
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ri->iri_vtag = vtag;
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ri->iri_nfrags = i;
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if (vtag)
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if (status & (1 << IAVF_RX_DESC_STATUS_L2TAG1P_SHIFT)) {
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ri->iri_vtag = le16toh(cur->wb.qword0.lo_dword.l2tag1);
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ri->iri_flags |= M_VLANTAG;
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}
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ri->iri_nfrags = i;
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return (0);
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}
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@ -285,7 +285,7 @@ ice_ift_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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if_softc_ctx_t scctx = sc->scctx;
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struct ice_rx_queue *rxq = &sc->pf_vsi.rx_queues[ri->iri_qsidx];
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union ice_32b_rx_flex_desc *cur;
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u16 status0, plen, vtag, ptype;
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u16 status0, plen, ptype;
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bool eop;
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size_t cidx;
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int i;
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@ -310,10 +310,6 @@ ice_ift_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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cur->wb.status_error0 = 0;
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eop = (status0 & BIT(ICE_RX_FLEX_DESC_STATUS0_EOF_S));
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if (status0 & BIT(ICE_RX_FLEX_DESC_STATUS0_L2TAG1P_S))
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vtag = le16toh(cur->wb.l2tag1);
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else
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vtag = 0;
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/*
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* Make sure packets with bad L2 values are discarded.
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@ -340,10 +336,11 @@ ice_ift_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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&ri->iri_csum_data, status0, ptype);
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ri->iri_flowid = le32toh(RX_FLEX_NIC(&cur->wb, rss_hash));
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ri->iri_rsstype = ice_ptype_to_hash(ptype);
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ri->iri_vtag = vtag;
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ri->iri_nfrags = i;
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if (vtag)
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if (status0 & BIT(ICE_RX_FLEX_DESC_STATUS0_L2TAG1P_S)) {
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ri->iri_vtag = le16toh(cur->wb.l2tag1);
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ri->iri_flags |= M_VLANTAG;
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}
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ri->iri_nfrags = i;
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return (0);
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}
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@ -461,12 +461,12 @@ igc_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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struct rx_ring *rxr = &que->rxr;
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union igc_adv_rx_desc *rxd;
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uint16_t pkt_info, len, vtag;
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uint16_t pkt_info, len;
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uint32_t ptype, staterr;
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int i, cidx;
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bool eop;
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staterr = i = vtag = 0;
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staterr = i = 0;
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cidx = ri->iri_cidx;
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do {
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@ -485,8 +485,6 @@ igc_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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rxd->wb.upper.status_error = 0;
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eop = ((staterr & IGC_RXD_STAT_EOP) == IGC_RXD_STAT_EOP);
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vtag = le16toh(rxd->wb.upper.vlan);
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/* Make sure bad packets are discarded */
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if (eop && ((staterr & IGC_RXDEXT_STATERR_RXE) != 0)) {
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adapter->dropped_pkts++;
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@ -517,7 +515,7 @@ igc_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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if ((scctx->isc_capenable & IFCAP_VLAN_HWTAGGING) != 0 &&
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(staterr & IGC_RXD_STAT_VP) != 0) {
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ri->iri_vtag = vtag;
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ri->iri_vtag = le16toh(rxd->wb.upper.vlan);
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ri->iri_flags |= M_VLANTAG;
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}
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@ -399,7 +399,6 @@ ixgbe_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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union ixgbe_adv_rx_desc *rxd;
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uint16_t pkt_info, len, cidx, i;
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uint16_t vtag = 0;
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uint32_t ptype;
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uint32_t staterr = 0;
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bool eop;
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@ -424,12 +423,6 @@ ixgbe_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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rxd->wb.upper.status_error = 0;
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eop = ((staterr & IXGBE_RXD_STAT_EOP) != 0);
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if ( (rxr->vtag_strip) && (staterr & IXGBE_RXD_STAT_VP) ) {
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vtag = le16toh(rxd->wb.upper.vlan);
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} else {
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vtag = 0;
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}
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/* Make sure bad packets are discarded */
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if (eop && (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) != 0) {
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if (sc->feat_en & IXGBE_FEATURE_VF)
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@ -463,10 +456,12 @@ ixgbe_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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else
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ri->iri_rsstype = M_HASHTYPE_OPAQUE_HASH;
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}
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ri->iri_vtag = vtag;
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ri->iri_nfrags = i;
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if (vtag)
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if ((rxr->vtag_strip) && (staterr & IXGBE_RXD_STAT_VP)) {
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ri->iri_vtag = le16toh(rxd->wb.upper.vlan);
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ri->iri_flags |= M_VLANTAG;
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}
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ri->iri_nfrags = i;
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return (0);
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} /* ixgbe_isc_rxd_pkt_get */
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@ -663,7 +663,7 @@ ixl_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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struct rx_ring *rxr = &que->rxr;
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union i40e_rx_desc *cur;
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u32 status, error;
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u16 plen, vtag;
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u16 plen;
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u64 qword;
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u8 ptype;
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bool eop;
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@ -694,10 +694,6 @@ ixl_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
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cur->wb.qword1.status_error_len = 0;
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eop = (status & (1 << I40E_RX_DESC_STATUS_EOF_SHIFT));
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if (status & (1 << I40E_RX_DESC_STATUS_L2TAG1P_SHIFT))
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vtag = le16toh(cur->wb.qword0.lo_dword.l2tag1);
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else
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vtag = 0;
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/*
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** Make sure bad packets are discarded,
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rxr->csum_errs += ixl_rx_checksum(ri, status, error, ptype);
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ri->iri_flowid = le32toh(cur->wb.qword0.hi_dword.rss);
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ri->iri_rsstype = ixl_ptype_to_hash(ptype);
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ri->iri_vtag = vtag;
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ri->iri_nfrags = i;
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if (vtag)
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if (status & (1 << I40E_RX_DESC_STATUS_L2TAG1P_SHIFT)) {
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ri->iri_vtag = le16toh(cur->wb.qword0.lo_dword.l2tag1);
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ri->iri_flags |= M_VLANTAG;
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}
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ri->iri_nfrags = i;
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return (0);
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}
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