cxgbe(4): Replace T4_PKT_TIMESTAMP with something slightly less hackish.
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=337996
@ -349,7 +349,7 @@ enum {
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/* iq flags */
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IQ_ALLOCATED = (1 << 0), /* firmware resources allocated */
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IQ_HAS_FL = (1 << 1), /* iq associated with a freelist */
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/* 1 << 2 Used to be IQ_INTR */
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IQ_RX_TIMESTAMP = (1 << 2), /* provide the SGE rx timestamp */
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IQ_LRO_ENABLED = (1 << 3), /* iq is an eth rxq with LRO enabled */
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IQ_ADJ_CREDIT = (1 << 4), /* hw is off by 1 credit for this iq */
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@ -1464,7 +1464,8 @@ cxgbe_probe(device_t dev)
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#define T4_CAP (IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU | IFCAP_HWCSUM | \
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IFCAP_VLAN_HWCSUM | IFCAP_TSO | IFCAP_JUMBO_MTU | IFCAP_LRO | \
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IFCAP_VLAN_HWTSO | IFCAP_LINKSTATE | IFCAP_HWCSUM_IPV6 | IFCAP_HWSTATS)
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IFCAP_VLAN_HWTSO | IFCAP_LINKSTATE | IFCAP_HWCSUM_IPV6 | IFCAP_HWSTATS | \
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IFCAP_HWRXTSTMP)
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#define T4_CAP_ENABLE (T4_CAP)
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static int
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@ -1813,6 +1814,18 @@ cxgbe_ioctl(struct ifnet *ifp, unsigned long cmd, caddr_t data)
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if (mask & IFCAP_TXRTLMT)
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ifp->if_capenable ^= IFCAP_TXRTLMT;
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#endif
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if (mask & IFCAP_HWRXTSTMP) {
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int i;
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struct sge_rxq *rxq;
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ifp->if_capenable ^= IFCAP_HWRXTSTMP;
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for_each_rxq(vi, i, rxq) {
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if (ifp->if_capenable & IFCAP_HWRXTSTMP)
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rxq->iq.flags |= IQ_RX_TIMESTAMP;
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else
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rxq->iq.flags &= ~IQ_RX_TIMESTAMP;
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}
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}
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#ifdef VLAN_CAPABILITIES
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VLAN_CAPABILITIES(ifp);
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@ -1564,6 +1564,17 @@ sort_before_lro(struct lro_ctrl *lro)
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return (lro->lro_mbuf_max != 0);
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}
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static inline uint64_t
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last_flit_to_ns(struct adapter *sc, uint64_t lf)
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{
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uint64_t n = be64toh(lf) & 0xfffffffffffffff; /* 60b, not 64b. */
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if (n > UINT64_MAX / 1000000)
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return (n / sc->params.vpd.cclk * 1000000);
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else
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return (n * 1000000 / sc->params.vpd.cclk);
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}
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/*
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* Deals with interrupts on an iq+fl queue.
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*/
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@ -1624,19 +1635,21 @@ service_iq_fl(struct sge_iq *iq, int budget)
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if (__predict_false(m0 == NULL))
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goto out;
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refill = IDXDIFF(fl->hw_cidx, fl_hw_cidx, fl->sidx) > 2;
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#ifdef T4_PKT_TIMESTAMP
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/*
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* 60 bit timestamp for the payload is
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* *(uint64_t *)m0->m_pktdat. Note that it is
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* in the leading free-space in the mbuf. The
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* kernel can clobber it during a pullup,
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* m_copymdata, etc. You need to make sure that
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* the mbuf reaches you unmolested if you care
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* about the timestamp.
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*/
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*(uint64_t *)m0->m_pktdat =
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be64toh(ctrl->u.last_flit) & 0xfffffffffffffff;
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if (iq->flags & IQ_RX_TIMESTAMP) {
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/*
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* Fill up rcv_tstmp but do not set M_TSTMP.
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* rcv_tstmp is not in the format that the
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* kernel expects and we don't want to mislead
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* it. For now this is only for custom code
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* that knows how to interpret cxgbe's stamp.
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*/
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m0->m_pkthdr.rcv_tstmp =
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last_flit_to_ns(sc, d->rsp.u.last_flit);
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#ifdef notyet
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m0->m_flags |= M_TSTMP;
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#endif
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}
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/* fall through */
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@ -1814,10 +1827,7 @@ get_scatter_segment(struct adapter *sc, struct sge_fl *fl, int fr_offset,
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if (m == NULL)
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return (NULL);
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fl->mbuf_allocated++;
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#ifdef T4_PKT_TIMESTAMP
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/* Leave room for a timestamp */
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m->m_data += 8;
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#endif
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/* copy data to mbuf */
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bcopy(payload, mtod(m, caddr_t), len);
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@ -34,9 +34,6 @@ SRCS+= cudbg_wtp.c
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SRCS+= fastlz_api.c
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SRCS+= fastlz.c
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# Provide the timestamp of a packet in its header mbuf.
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#CFLAGS+= -DT4_PKT_TIMESTAMP
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CFLAGS+= -I${CXGBE}
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.include <bsd.kmod.mk>
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