From: Petri Savolainen <petri.savolai...@linaro.org> Enable checksum insertion only when requested. DPDK uses less optimized driver code (on Intel NICs at least) when any of the L4 checksum offloads is enabled.
Signed-off-by: Petri Savolainen <petri.savolai...@linaro.org> --- /** Email created from pull request 313 (psavol:next-pktout-config) ** https://github.com/Linaro/odp/pull/313 ** Patch: https://github.com/Linaro/odp/pull/313.patch ** Base sha: 4cb02e1caccb9179575e95448fd46979e17d0905 ** Merge commit sha: 5d0d0efcb77baf5b9db803a8a8b89450e27aff38 **/ platform/linux-generic/pktio/dpdk.c | 48 ++++++++++++++++++++++++++++++++++++- 1 file changed, 47 insertions(+), 1 deletion(-) diff --git a/platform/linux-generic/pktio/dpdk.c b/platform/linux-generic/pktio/dpdk.c index ccccc0a8a..430eb8df4 100644 --- a/platform/linux-generic/pktio/dpdk.c +++ b/platform/linux-generic/pktio/dpdk.c @@ -123,6 +123,7 @@ static inline void mbuf_update(struct rte_mbuf *mbuf, odp_packet_hdr_t *pkt_hdr, mbuf->data_len = pkt_len; mbuf->pkt_len = pkt_len; mbuf->refcnt = 1; + mbuf->ol_flags = 0; if (odp_unlikely(pkt_hdr->buf_hdr.base_data != pkt_hdr->buf_hdr.seg[0].data)) @@ -1246,6 +1247,13 @@ static void dpdk_init_capability(pktio_entry_t *pktio_entry, (dev_info->tx_offload_capa & DEV_TX_OFFLOAD_UDP_CKSUM) ? 1 : 0; capa->config.pktout.bit.tcp_chksum = (dev_info->tx_offload_capa & DEV_TX_OFFLOAD_TCP_CKSUM) ? 1 : 0; + + capa->config.pktout.bit.ipv4_chksum_ena = + capa->config.pktout.bit.ipv4_chksum; + capa->config.pktout.bit.udp_chksum_ena = + capa->config.pktout.bit.udp_chksum; + capa->config.pktout.bit.tcp_chksum_ena = + capa->config.pktout.bit.tcp_chksum; } static int dpdk_open(odp_pktio_t id ODP_UNUSED, @@ -1381,9 +1389,47 @@ static int dpdk_start(pktio_entry_t *pktio_entry) } /* Init TX queues */ for (i = 0; i < pktio_entry->s.num_out_queue; i++) { + struct rte_eth_dev_info dev_info; + const struct rte_eth_txconf *txconf = NULL; + int ip_ena = pktio_entry->s.config.pktout.bit.ipv4_chksum_ena; + int udp_ena = pktio_entry->s.config.pktout.bit.udp_chksum_ena; + int tcp_ena = pktio_entry->s.config.pktout.bit.tcp_chksum_ena; + int sctp_ena = pktio_entry->s.config.pktout.bit.sctp_chksum_ena; + int chksum_ena = ip_ena | udp_ena | tcp_ena | sctp_ena; + + if (chksum_ena) { + /* Enable UDP, TCP, STCP checksum offload */ + uint32_t txq_flags = 0; + + if (udp_ena == 0) + txq_flags |= ETH_TXQ_FLAGS_NOXSUMUDP; + + if (tcp_ena == 0) + txq_flags |= ETH_TXQ_FLAGS_NOXSUMTCP; + + if (sctp_ena == 0) + txq_flags |= ETH_TXQ_FLAGS_NOXSUMSCTP; + + /* When IP checksum is requested alone, enable UDP + * offload. DPDK IP checksum offload is enabled only + * when one of the L4 checksum offloads is requested.*/ + if ((udp_ena == 0) && (tcp_ena == 0) && (sctp_ena == 0)) + txq_flags = ETH_TXQ_FLAGS_NOXSUMTCP | + ETH_TXQ_FLAGS_NOXSUMSCTP; + + txq_flags |= ETH_TXQ_FLAGS_NOMULTSEGS | + ETH_TXQ_FLAGS_NOREFCOUNT | + ETH_TXQ_FLAGS_NOMULTMEMP | + ETH_TXQ_FLAGS_NOVLANOFFL; + + rte_eth_dev_info_get(port_id, &dev_info); + dev_info.default_txconf.txq_flags = txq_flags; + txconf = &dev_info.default_txconf; + } + ret = rte_eth_tx_queue_setup(port_id, i, DPDK_NM_TX_DESC, rte_eth_dev_socket_id(port_id), - NULL); + txconf); if (ret < 0) { ODP_ERR("Queue setup failed: err=%d, port=%" PRIu8 "\n", ret, port_id);
