From: Michael Chan Date: Tue, 12 Dec 2023 00:51:12 +0000 (-0800) Subject: bnxt_en: Fix TX ring indexing logic X-Git-Tag: v6.8-rc1~131^2~167^2~10 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=18fe0a383cca78cfb183f83f947e75bebc7b3a20;p=linux-2.6-block.git bnxt_en: Fix TX ring indexing logic Two spots were missed when modifying the TX ring indexing logic. The use of unmasked TX index in bnxt_tx_int() will cause unnecessary __bnxt_tx_int() calls. The same issue in bnxt_tx_int_xdp() can result in illegal array index. Fixes: 6d1add95536b ("bnxt_en: Modify TX ring indexing logic.") Signed-off-by: Michael Chan Link: https://lore.kernel.org/r/20231212005122.2401-4-michael.chan@broadcom.com Signed-off-by: Jakub Kicinski --- diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 114beaa95e78..83a47feaf869 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -781,7 +781,7 @@ static void bnxt_tx_int(struct bnxt *bp, struct bnxt_napi *bnapi, int budget) int i; bnxt_for_each_napi_tx(i, bnapi, txr) { - if (txr->tx_hw_cons != txr->tx_cons) + if (txr->tx_hw_cons != RING_TX(bp, txr->tx_cons)) __bnxt_tx_int(bp, txr, budget); } bnapi->events &= ~BNXT_TX_CMP_EVENT; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c index 4791f6a14e55..037624f17aea 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c @@ -173,7 +173,7 @@ void bnxt_tx_int_xdp(struct bnxt *bp, struct bnxt_napi *bnapi, int budget) bnapi->events &= ~BNXT_TX_CMP_EVENT; WRITE_ONCE(txr->tx_cons, tx_cons); if (rx_doorbell_needed) { - tx_buf = &txr->tx_buf_ring[last_tx_cons]; + tx_buf = &txr->tx_buf_ring[RING_TX(bp, last_tx_cons)]; bnxt_db_write(bp, &rxr->rx_db, tx_buf->rx_prod); }