From a5b252a415ce15362980e3257dbdf5f0e6412d35 Mon Sep 17 00:00:00 2001 From: Harish Patil Date: Sat, 27 Jan 2018 13:15:28 -0800 Subject: [PATCH] net/qede: fix tunnel header size in Tx BD configuration - Fix incorrect header size. In the tunnel case, the outer L2/L3 lengths should be included to calculate tunnel header_size. - In TSO case, skip manipulating TX BD1 and TX BD2 data buffer fields since those fields are already updated with header and payload lengths respectively. - Update TX BD debug data collection. Fixes: 3d4bb4411683 ("net/qede: add fastpath support for VXLAN tunneling") Cc: stable@dpdk.org Signed-off-by: Harish Patil --- drivers/net/qede/qede_rxtx.c | 40 ++++++++++++++++++++++-------------- 1 file changed, 25 insertions(+), 15 deletions(-) diff --git a/drivers/net/qede/qede_rxtx.c b/drivers/net/qede/qede_rxtx.c index 2af1bfc932..df248cf7ee 100644 --- a/drivers/net/qede/qede_rxtx.c +++ b/drivers/net/qede/qede_rxtx.c @@ -1588,7 +1588,8 @@ next_cqe: /* Populate scatter gather buffer descriptor fields */ static inline uint16_t qede_encode_sg_bd(struct qede_tx_queue *p_txq, struct rte_mbuf *m_seg, - struct eth_tx_2nd_bd **bd2, struct eth_tx_3rd_bd **bd3) + struct eth_tx_2nd_bd **bd2, struct eth_tx_3rd_bd **bd3, + uint16_t start_seg) { struct qede_tx_queue *txq = p_txq; struct eth_tx_bd *tx_bd = NULL; @@ -1597,7 +1598,7 @@ qede_encode_sg_bd(struct qede_tx_queue *p_txq, struct rte_mbuf *m_seg, /* Check for scattered buffers */ while (m_seg) { - if (nb_segs == 0) { + if (start_seg == 0) { if (!*bd2) { *bd2 = (struct eth_tx_2nd_bd *) ecore_chain_produce(&txq->tx_pbl); @@ -1607,7 +1608,7 @@ qede_encode_sg_bd(struct qede_tx_queue *p_txq, struct rte_mbuf *m_seg, mapping = rte_mbuf_data_iova(m_seg); QEDE_BD_SET_ADDR_LEN(*bd2, mapping, m_seg->data_len); PMD_TX_LOG(DEBUG, txq, "BD2 len %04x", m_seg->data_len); - } else if (nb_segs == 1) { + } else if (start_seg == 1) { if (!*bd3) { *bd3 = (struct eth_tx_3rd_bd *) ecore_chain_produce(&txq->tx_pbl); @@ -1645,20 +1646,24 @@ print_tx_bd_info(struct qede_tx_queue *txq, if (bd1) PMD_TX_LOG(INFO, txq, - "BD1: nbytes=%u nbds=%u bd_flags=%04x bf=%04x", - rte_cpu_to_le_16(bd1->nbytes), bd1->data.nbds, - bd1->data.bd_flags.bitfields, - rte_cpu_to_le_16(bd1->data.bitfields)); + "BD1: nbytes=0x%04x nbds=0x%04x bd_flags=0x%04x bf=0x%04x", + rte_cpu_to_le_16(bd1->nbytes), bd1->data.nbds, + bd1->data.bd_flags.bitfields, + rte_cpu_to_le_16(bd1->data.bitfields)); if (bd2) PMD_TX_LOG(INFO, txq, - "BD2: nbytes=%u bf=%04x\n", - rte_cpu_to_le_16(bd2->nbytes), bd2->data.bitfields1); + "BD2: nbytes=0x%04x bf1=0x%04x bf2=0x%04x tunn_ip=0x%04x\n", + rte_cpu_to_le_16(bd2->nbytes), bd2->data.bitfields1, + bd2->data.bitfields2, bd2->data.tunn_ip_size); if (bd3) PMD_TX_LOG(INFO, txq, - "BD3: nbytes=%u bf=%04x mss=%u\n", - rte_cpu_to_le_16(bd3->nbytes), - rte_cpu_to_le_16(bd3->data.bitfields), - rte_cpu_to_le_16(bd3->data.lso_mss)); + "BD3: nbytes=0x%04x bf=0x%04x MSS=0x%04x " + "tunn_l4_hdr_start_offset_w=0x%04x tunn_hdr_size=0x%04x\n", + rte_cpu_to_le_16(bd3->nbytes), + rte_cpu_to_le_16(bd3->data.bitfields), + rte_cpu_to_le_16(bd3->data.lso_mss), + bd3->data.tunn_l4_hdr_start_offset_w, + bd3->data.tunn_hdr_size_w); rte_get_tx_ol_flag_list(tx_ol_flags, ol_buf, sizeof(ol_buf)); PMD_TX_LOG(INFO, txq, "TX offloads = %s\n", ol_buf); @@ -1938,6 +1943,10 @@ qede_xmit_pkts(void *p_txq, struct rte_mbuf **tx_pkts, uint16_t nb_pkts) * and BD2 onwards for data. */ hdr_size = mbuf->l2_len + mbuf->l3_len + mbuf->l4_len; + if (tunn_flg) + hdr_size += mbuf->outer_l2_len + + mbuf->outer_l3_len; + bd1_bd_flags_bf |= 1 << ETH_TX_1ST_BD_FLAGS_LSO_SHIFT; bd1_bd_flags_bf |= 1 << ETH_TX_1ST_BD_FLAGS_IP_CSUM_SHIFT; @@ -2054,9 +2063,11 @@ qede_xmit_pkts(void *p_txq, struct rte_mbuf **tx_pkts, uint16_t nb_pkts) /* Handle fragmented MBUF */ m_seg = mbuf->next; + /* Encode scatter gather buffer descriptors if required */ - nb_frags = qede_encode_sg_bd(txq, m_seg, &bd2, &bd3); + nb_frags = qede_encode_sg_bd(txq, m_seg, &bd2, &bd3, nbds - 1); bd1->data.nbds = nbds + nb_frags; + txq->nb_tx_avail -= bd1->data.nbds; txq->sw_tx_prod++; rte_prefetch0(txq->sw_tx_ring[TX_PROD(txq)].mbuf); @@ -2064,7 +2075,6 @@ qede_xmit_pkts(void *p_txq, struct rte_mbuf **tx_pkts, uint16_t nb_pkts) rte_cpu_to_le_16(ecore_chain_get_prod_idx(&txq->tx_pbl)); #ifdef RTE_LIBRTE_QEDE_DEBUG_TX print_tx_bd_info(txq, bd1, bd2, bd3, tx_ol_flags); - PMD_TX_LOG(INFO, txq, "lso=%d tunn=%d", lso_flg, tunn_flg); #endif nb_pkt_sent++; txq->xmit_pkts++; -- 2.20.1