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tTZeV6hONrO8ApQfmEkjHnZbfuW/Xj0Pu10E2E6TXuJXB/J4Ofe7rjhHVCq6BcwBaREicdyViy8 4HP80kITwgcAnzhobg6B+Fn8JkAxewTF7s7iJxevodXwtqvduLNZo+nLiFwIsauu5tKj66637rZ RV8FxoSj0Vlvfme3y8A== On 8/12/26 6:52AM, Anand Khoje wrote: > The dedicated hardware timestamp RX queue is allocated with q->index > equal to lif->ionic->nrxqs_per_lif. The normal txqcqs array only > contains the regular queue pairs, so using that index to set rxq->partner > can read one entry past txqcqs[] and then write through the derived > pointer. > Only link RX/TX partners for normal queue-pair indexes. Leave the hwstamp > RX queue unpaired, and make the XDP_TX path abort cleanly if an RX queue > has no TX partner. > > Fixes: e1615dda41144 ("net/ethernet/pensando: Add out-of-tree network drivers") The above commit is local to UEK. It needs to either be removed or replaced with the relevant mainline commit. > Signed-off-by: Anand Khoje > Reviewed-by: Si-Wei Liu > --- > drivers/net/ethernet/pensando/ionic/ionic_lif.c | 14 ++++++++++++++ > drivers/net/ethernet/pensando/ionic/ionic_txrx.c | 7 ++++++- > 2 files changed, 20 insertions(+), 1 deletion(-) > > diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c > index fd3ee9820531..1822361e1070 100644 > --- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c > +++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c > @@ -920,9 +920,23 @@ static int ionic_lif_rxq_init(struct ionic_lif *lif, struct ionic_qcq *qcq) > }; > int err; > > + q->partner = NULL; > + > + /* Only normal RX queues have matching TX queue partners, > + * skip partner pairing for hwstamp RX queue. > + */ > + if (q->index >= lif->nxqs) > + goto skip_partner; > + > + if (WARN_ON_ONCE(!lif->txqcqs || > + q->index >= lif->ionic->ntxqs_per_lif || > + !lif->txqcqs[q->index])) > + return -EINVAL; > + > q->partner = &lif->txqcqs[q->index]->q; > q->partner->partner = q; > > +skip_partner: > if (!lif->xdp_prog || > (lif->xdp_prog->aux && lif->xdp_prog->aux->xdp_has_frags)) > ctx.cmd.q_init.flags |= cpu_to_le16(IONIC_QINIT_F_SG); > diff --git a/drivers/net/ethernet/pensando/ionic/ionic_txrx.c b/drivers/net/ethernet/pensando/ionic/ionic_txrx.c > index 301ebee2fdc5..73998d61593a 100644 > --- a/drivers/net/ethernet/pensando/ionic/ionic_txrx.c > +++ b/drivers/net/ethernet/pensando/ionic/ionic_txrx.c > @@ -545,13 +545,18 @@ static bool ionic_run_xdp(struct ionic_rx_stats *stats, > break; > > case XDP_TX: > + txq = rxq->partner; > + if (unlikely(!txq)) { > + err = -EIO; > + break; > + } > + > xdpf = xdp_convert_buff_to_frame(&xdp_buf); > if (!xdpf) { > err = -ENOSPC; > break; > } > > - txq = rxq->partner; > nq = netdev_get_tx_queue(netdev, txq->index); > __netif_tx_lock(nq, smp_processor_id()); > txq_trans_cond_update(nq);