diff options
| author | Wei Fang <wei.fang@nxp.com> | 2026-02-05 16:57:35 +0800 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2026-02-10 10:58:20 +0100 |
| commit | 2ff7a7d3928bd8bd524d153b84061dc0eba216c2 (patch) | |
| tree | 3e130c5ed2bd819ca5e6751398229e08585ec084 | |
| parent | 8a3344bb734f4eaef889cdb027cf6303e2bd681b (diff) | |
net: fec: transmit XDP frames in bulk
Currently, the driver writes the ENET_TDAR register for every XDP frame
to trigger transmit start. Frequent MMIO writes consume more CPU cycles
and may reduce XDP TX performance, so transmit XDP frames in bulk.
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260205085742.2685134-9-wei.fang@nxp.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
| -rw-r--r-- | drivers/net/ethernet/freescale/fec_main.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index b2a6830e6c9b..fd89947c5f5f 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -2006,6 +2006,8 @@ static int fec_enet_rx_queue_xdp(struct fec_enet_private *fep, int queue, rxq->stats[RX_XDP_TX_ERRORS]++; fec_xdp_drop(rxq, &xdp, sync); trace_xdp_exception(ndev, prog, XDP_TX); + } else { + xdp_res |= FEC_ENET_XDP_TX; } break; default: @@ -2056,6 +2058,10 @@ rx_processing_done: if (xdp_res & FEC_ENET_XDP_REDIR) xdp_do_flush(); + if (xdp_res & FEC_ENET_XDP_TX) + /* Trigger transmission start */ + fec_txq_trigger_xmit(fep, fep->tx_queue[tx_qid]); + return pkt_received; } @@ -4037,9 +4043,6 @@ static int fec_enet_txq_xmit_frame(struct fec_enet_private *fep, txq->bd.cur = bdp; - /* Trigger transmission start */ - fec_txq_trigger_xmit(fep, txq); - return 0; } @@ -4089,6 +4092,9 @@ static int fec_enet_xdp_xmit(struct net_device *dev, sent_frames++; } + if (sent_frames) + fec_txq_trigger_xmit(fep, txq); + __netif_tx_unlock(nq); return sent_frames; |