From patchwork Fri Dec 2 07:44:46 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Rybchenko X-Patchwork-Id: 17414 X-Patchwork-Delegate: ferruh.yigit@amd.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id EA8F6FABA; Fri, 2 Dec 2016 08:46:19 +0100 (CET) Received: from nbfkord-smmo02.seg.att.com (nbfkord-smmo02.seg.att.com [209.65.160.78]) by dpdk.org (Postfix) with ESMTP id 26A6BFA4F for ; Fri, 2 Dec 2016 08:45:25 +0100 (CET) Received: from unknown [12.187.104.26] (EHLO nbfkord-smmo02.seg.att.com) by nbfkord-smmo02.seg.att.com(mxl_mta-7.2.4-7) with ESMTP id 59621485.2b0827471940.106169.00-2458.246016.nbfkord-smmo02.seg.att.com (envelope-from ); Fri, 02 Dec 2016 07:45:25 +0000 (UTC) X-MXL-Hash: 584126954ab1530e-5eb6a0a88e4ddc05c7a0a30e53da3d9ba3be1c51 Received: from unknown [12.187.104.26] by nbfkord-smmo02.seg.att.com(mxl_mta-7.2.4-7) with SMTP id 29621485.0.106140.00-2390.246004.nbfkord-smmo02.seg.att.com (envelope-from ); Fri, 02 Dec 2016 07:45:24 +0000 (UTC) X-MXL-Hash: 584126945ae263cb-dbca153e82397eb2e3b8d300c095d0fe1edf72ee Received: from ocex03.SolarFlarecom.com (10.20.40.36) by ocex03.SolarFlarecom.com (10.20.40.36) with Microsoft SMTP Server (TLS) id 15.0.1044.25; Thu, 1 Dec 2016 23:45:02 -0800 Received: from opal.uk.solarflarecom.com (10.17.10.1) by ocex03.SolarFlarecom.com (10.20.40.36) with Microsoft SMTP Server (TLS) id 15.0.1044.25 via Frontend Transport; Thu, 1 Dec 2016 23:45:02 -0800 Received: from uklogin.uk.solarflarecom.com (uklogin.uk.solarflarecom.com [10.17.10.10]) by opal.uk.solarflarecom.com (8.13.8/8.13.8) with ESMTP id uB27j1Zc005926; Fri, 2 Dec 2016 07:45:01 GMT Received: from uklogin.uk.solarflarecom.com (localhost.localdomain [127.0.0.1]) by uklogin.uk.solarflarecom.com (8.13.8/8.13.8) with ESMTP id uB27ixx3026628; Fri, 2 Dec 2016 07:45:01 GMT From: Andrew Rybchenko To: CC: Ivan Malov Date: Fri, 2 Dec 2016 07:44:46 +0000 Message-ID: <1480664691-26561-27-git-send-email-arybchenko@solarflare.com> X-Mailer: git-send-email 1.8.2.3 In-Reply-To: <1480664691-26561-1-git-send-email-arybchenko@solarflare.com> References: <1480664691-26561-1-git-send-email-arybchenko@solarflare.com> MIME-Version: 1.0 X-AnalysisOut: [v=2.1 cv=NIXTjhOg c=1 sm=1 tr=0 a=8BlWFWvVlq5taO8ncb8nKg==] X-AnalysisOut: [:17 a=n5n_aSjo0skA:10 a=pK7X0mNQAAAA:8 a=zRKbQ67AAAAA:8 a=] X-AnalysisOut: [GXR-bymMMbl77G2L-qYA:9 a=5HA-qpC1VU4iIGLgRoNS:22 a=PA03WX8] X-AnalysisOut: [tBzeizutn5_OT:22] X-Spam: [F=0.2000000000; CM=0.500; S=0.200(2015072901)] X-MAIL-FROM: X-SOURCE-IP: [12.187.104.26] Subject: [dpdk-dev] [PATCH 26/31] net/sfc: support RSS hash offload X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: Ivan Malov Extract RSS hash provided by the HW in the prefix and put it to mbuf. Reviewed-by: Andrew Lee Reviewed-by: Robert Stonehouse Signed-off-by: Ivan Malov Signed-off-by: Andrew Rybchenko --- doc/guides/nics/features/sfc_efx.ini | 1 + doc/guides/nics/sfc_efx.rst | 2 ++ drivers/net/sfc/sfc_rx.c | 31 ++++++++++++++++++++++++++++++- 3 files changed, 33 insertions(+), 1 deletion(-) diff --git a/doc/guides/nics/features/sfc_efx.ini b/doc/guides/nics/features/sfc_efx.ini index e7a1143..debea27 100644 --- a/doc/guides/nics/features/sfc_efx.ini +++ b/doc/guides/nics/features/sfc_efx.ini @@ -14,6 +14,7 @@ Scattered Rx = Y Promiscuous mode = Y Allmulticast mode = Y Multicast MAC filter = Y +RSS hash = Y Flow control = Y VLAN offload = P L3 checksum offload = Y diff --git a/doc/guides/nics/sfc_efx.rst b/doc/guides/nics/sfc_efx.rst index 4f674c0..64489de 100644 --- a/doc/guides/nics/sfc_efx.rst +++ b/doc/guides/nics/sfc_efx.rst @@ -68,6 +68,8 @@ SFC EFX PMD has support for: - Receive side scaling (RSS) +- RSS hash + - Scattered Rx DMA for packet that are larger that a single Rx descriptor - Deferred receive and transmit queue start diff --git a/drivers/net/sfc/sfc_rx.c b/drivers/net/sfc/sfc_rx.c index f0fe1b8..1e254a8 100644 --- a/drivers/net/sfc/sfc_rx.c +++ b/drivers/net/sfc/sfc_rx.c @@ -185,6 +185,28 @@ sfc_rx_desc_flags_to_packet_type(const unsigned int desc_flags) ((desc_flags & EFX_PKT_UDP) ? RTE_PTYPE_L4_UDP : 0); } +static void +sfc_rx_set_rss_hash(struct sfc_rxq *rxq, unsigned int flags, struct rte_mbuf *m) +{ +#if EFSYS_OPT_RX_SCALE + uint8_t *mbuf_data; + + + if ((rxq->flags & SFC_RXQ_RSS_HASH) == 0) + return; + + mbuf_data = rte_pktmbuf_mtod(m, uint8_t *); + + if (flags & (EFX_PKT_IPV4 | EFX_PKT_IPV6)) { + m->hash.rss = efx_pseudo_hdr_hash_get(rxq->common, + EFX_RX_HASHALG_TOEPLITZ, + mbuf_data); + + m->ol_flags |= PKT_RX_RSS_HASH; + } +#endif +} + uint16_t sfc_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) { @@ -231,7 +253,6 @@ sfc_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) seg_len = rxd->size - prefix_size; } - m->data_off += prefix_size; rte_pktmbuf_data_len(m) = seg_len; rte_pktmbuf_pkt_len(m) = seg_len; @@ -261,6 +282,14 @@ sfc_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) m->ol_flags = sfc_rx_desc_flags_to_offload_flags(desc_flags); m->packet_type = sfc_rx_desc_flags_to_packet_type(desc_flags); + /* + * Extract RSS hash from the packet prefix and + * set the corresponding field (if needed and possible) + */ + sfc_rx_set_rss_hash(rxq, desc_flags, m); + + m->data_off += prefix_size; + *rx_pkts++ = m; done_pkts++; continue;