From patchwork Fri Oct 13 03:27:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Trevor Tao X-Patchwork-Id: 132586 X-Patchwork-Delegate: thomas@monjalon.net Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 545684233A; Fri, 13 Oct 2023 05:27:48 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 754A6402E6; Fri, 13 Oct 2023 05:27:44 +0200 (CEST) Received: from m12.mail.163.com (m12.mail.163.com [220.181.12.216]) by mails.dpdk.org (Postfix) with ESMTP id E420E402CB for ; Fri, 13 Oct 2023 05:27:40 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-Id:MIME-Version; bh=Gydqe h4CvXOCmV+q/kZxAy39AIsZEy/0eUJRVUz8cZs=; b=WlddU1JaCeLHc2YUik6dT 3FItVtVL3IH6kkV/ocuDVA7q0KvSn2ws/f+Tu3nk4Zw/TM3o/ks6duZ5EwLJwpAw F8Jvl4lIFA8eGzLX9NIzbdSLDfSEnrk6Y4lknYwMxnQzOYjctpIc96MeHZpZN/iR m/7dpX4v8O2dhpQDuTCVc8= Received: from u2204.. (unknown [49.76.95.19]) by zwqz-smtp-mta-g5-1 (Coremail) with SMTP id _____wDHh4MjuShlSDqlAQ--.65325S3; Fri, 13 Oct 2023 11:27:36 +0800 (CST) From: Trevor Tao To: dev@dpdk.org Cc: Trevor Tao Subject: [PATCH v2 1/3] examples/l3fwd: relax RSS requirement with option Date: Fri, 13 Oct 2023 03:27:28 +0000 Message-Id: <20231013032730.426691-2-taozj888@163.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231013032730.426691-1-taozj888@163.com> References: <20231013032730.426691-1-taozj888@163.com> MIME-Version: 1.0 X-CM-TRANSID: _____wDHh4MjuShlSDqlAQ--.65325S3 X-Coremail-Antispam: 1Uf129KBjvJXoWxCrW3ZFWrury5AFWUKF4DJwb_yoW5KryDpF s8Gry7XF1qvw43t3WFyF9xWrs8JFWUAws8Ars5Z343C3WUtFZ3Wr40krn8JF97GF48WrW7 X3yrXryxGF4qya7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0JUTa0kUUUUU= X-Originating-IP: [49.76.95.19] X-CM-SenderInfo: hwdr6yqyyyqiywtou0bp/xtbBogoIx1aEJ0fdwwAAsL X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Now the port Rx mq_mode had been set to RTE_ETH_MQ_RX_RSS by default, but some hw and/or virtual interface does not support the RSS and offload mode presupposed, e.g., some virtio interfaces in the cloud don't support RSS and the error msg may like: virtio_dev_configure(): RSS support requested but not supported by the device Port0 dev_configure = -95 So to enable the l3fwd running in that environment, the Rx mode requirement can be relaxed to reflect the hardware feature reality here, and the l3fwd can run smoothly then. An option named "relax-rx-mode" is added to enable the relax action here, and it's disabled by default. Signed-off-by: Trevor Tao --- examples/l3fwd/main.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c index 6063eb1399..89ad546a5e 100644 --- a/examples/l3fwd/main.c +++ b/examples/l3fwd/main.c @@ -73,6 +73,7 @@ static enum L3FWD_LOOKUP_MODE lookup_mode; static int numa_on = 1; /**< NUMA is enabled by default. */ static int parse_ptype; /**< Parse packet type using rx callback, and */ /**< disabled by default */ +static int relax_rx_mode; /**< Relax RX mode is disabled by default */ static int per_port_pool; /**< Use separate buffer pools per port; disabled */ /**< by default */ @@ -678,6 +679,7 @@ static const char short_options[] = #define CMD_LINE_OPT_MAX_PKT_LEN "max-pkt-len" #define CMD_LINE_OPT_HASH_ENTRY_NUM "hash-entry-num" #define CMD_LINE_OPT_PARSE_PTYPE "parse-ptype" +#define CMD_LINE_OPT_RELAX_RX_MODE "relax-rx-mode" #define CMD_LINE_OPT_PER_PORT_POOL "per-port-pool" #define CMD_LINE_OPT_MODE "mode" #define CMD_LINE_OPT_EVENTQ_SYNC "eventq-sched" @@ -705,6 +707,7 @@ enum { CMD_LINE_OPT_MAX_PKT_LEN_NUM, CMD_LINE_OPT_HASH_ENTRY_NUM_NUM, CMD_LINE_OPT_PARSE_PTYPE_NUM, + CMD_LINE_OPT_RELAX_RX_MODE_NUM, CMD_LINE_OPT_RULE_IPV4_NUM, CMD_LINE_OPT_RULE_IPV6_NUM, CMD_LINE_OPT_ALG_NUM, @@ -728,6 +731,7 @@ static const struct option lgopts[] = { {CMD_LINE_OPT_MAX_PKT_LEN, 1, 0, CMD_LINE_OPT_MAX_PKT_LEN_NUM}, {CMD_LINE_OPT_HASH_ENTRY_NUM, 1, 0, CMD_LINE_OPT_HASH_ENTRY_NUM_NUM}, {CMD_LINE_OPT_PARSE_PTYPE, 0, 0, CMD_LINE_OPT_PARSE_PTYPE_NUM}, + {CMD_LINE_OPT_RELAX_RX_MODE, 0, 0, CMD_LINE_OPT_RELAX_RX_MODE_NUM}, {CMD_LINE_OPT_PER_PORT_POOL, 0, 0, CMD_LINE_OPT_PARSE_PER_PORT_POOL}, {CMD_LINE_OPT_MODE, 1, 0, CMD_LINE_OPT_MODE_NUM}, {CMD_LINE_OPT_EVENTQ_SYNC, 1, 0, CMD_LINE_OPT_EVENTQ_SYNC_NUM}, @@ -853,6 +857,11 @@ parse_args(int argc, char **argv) parse_ptype = 1; break; + case CMD_LINE_OPT_RELAX_RX_MODE_NUM: + printf("Relax rx mode is enabled\n"); + relax_rx_mode = 1; + break; + case CMD_LINE_OPT_PARSE_PER_PORT_POOL: printf("per port buffer pool is enabled\n"); per_port_pool = 1; @@ -1260,6 +1269,13 @@ l3fwd_poll_resource_setup(void) if (dev_info.max_rx_queues == 1) local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE; + /* relax the rx rss requirement */ + if (relax_rx_mode && !local_port_conf.rx_adv_conf.rss_conf.rss_hf) { + printf("warning: modified the rx mq_mode to RTE_ETH_MQ_RX_NONE base on" + " device capability\n"); + local_port_conf.rxmode.mq_mode = RTE_ETH_MQ_RX_NONE; + } + if (local_port_conf.rx_adv_conf.rss_conf.rss_hf != port_conf.rx_adv_conf.rss_conf.rss_hf) { printf("Port %u modified RSS hash function based on hardware support," From patchwork Fri Oct 13 03:27:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Trevor Tao X-Patchwork-Id: 132587 X-Patchwork-Delegate: thomas@monjalon.net Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id A73DC4233A; Fri, 13 Oct 2023 05:27:53 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 95F52402AE; Fri, 13 Oct 2023 05:27:45 +0200 (CEST) Received: from m12.mail.163.com (m12.mail.163.com [220.181.12.198]) by mails.dpdk.org (Postfix) with ESMTP id 8C2DE402DA for ; Fri, 13 Oct 2023 05:27:41 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-Id:MIME-Version; bh=/sJQb GOrsWT/rMkWVof5MaqxO20nMCiSoHvXIp4ANT8=; b=gKlcUNf63FBramaUb9NvJ LQh4Fa/YGg8cuNpcjzVHMXpgDYzLBnEPJIAfR0Z1lRNJY5/AIGvLN59ZhLRNTcoq nQRbuKRYp2kh+8dX4Abw71apenXeH14fdCSdPGX5ip0NRrxlX82IcJMT2OoKMpmU mrKX+4B/zuOa0OTP4REm1I= Received: from u2204.. (unknown [49.76.95.19]) by zwqz-smtp-mta-g5-1 (Coremail) with SMTP id _____wDHh4MjuShlSDqlAQ--.65325S4; Fri, 13 Oct 2023 11:27:36 +0800 (CST) From: Trevor Tao To: dev@dpdk.org Cc: Trevor Tao Subject: [PATCH v2 2/3] examples/l3fwd: relax the Offload requirement Date: Fri, 13 Oct 2023 03:27:29 +0000 Message-Id: <20231013032730.426691-3-taozj888@163.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231013032730.426691-1-taozj888@163.com> References: <20231013032730.426691-1-taozj888@163.com> MIME-Version: 1.0 X-CM-TRANSID: _____wDHh4MjuShlSDqlAQ--.65325S4 X-Coremail-Antispam: 1Uf129KBjvJXoWxWFy8ZFWxGryfZr4fGr43GFg_yoWrCFy3pa nrKrs7Xrn3Zry5XF1fAa1furnIgw18ur1DCrn5Aw17t39rA34kJFWUtFy5uFW2ya4DCrZ3 ZFWrGrW3KF18A3JanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0pRJCztUUUUU= X-Originating-IP: [49.76.95.19] X-CM-SenderInfo: hwdr6yqyyyqiywtou0bp/1tbiSAoIx1+FiSj-ugAAsz X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Now the port Rx offload mode is set to RTE_ETH_RX_OFFLOAD_CHECKSUM by default, but some hw and/or virtual interface does not support the offload mode presupposed, e.g., some virtio interfaces in the cloud may only partly support RTE_ETH_RX_OFFLOAD_UDP_CKSUM/ RTE_ETH_RX_OFFLOAD_TCP_CKSUM, but not RTE_ETH_RX_OFFLOAD_IPV4_CKSUM, and the error msg here: Ethdev port_id=0 requested Rx offloads 0xe does not match Rx offloads capabilities 0x201d in rte_eth_dev_configure() So to enable the l3fwd running in that environment, the Rx mode requirement can be relaxed to reflect the hardware feature reality here, and the l3fwd can run smoothly then. A warning msg would be provided to user in case it happens here. On the other side, enabling the software cksum check in case missing the hw support. The relax action for rx cksum offload is just enabled when relax_rx_mode is true which is false by default. Signed-off-by: Trevor Tao --- examples/l3fwd/l3fwd.h | 12 ++++++++++-- examples/l3fwd/l3fwd_em.h | 2 +- examples/l3fwd/l3fwd_lpm.h | 2 +- examples/l3fwd/main.c | 14 ++++++++++++++ 4 files changed, 26 insertions(+), 4 deletions(-) diff --git a/examples/l3fwd/l3fwd.h b/examples/l3fwd/l3fwd.h index b55855c932..fd98ad3373 100644 --- a/examples/l3fwd/l3fwd.h +++ b/examples/l3fwd/l3fwd.h @@ -159,7 +159,7 @@ send_single_packet(struct lcore_conf *qconf, #ifdef DO_RFC_1812_CHECKS static inline int -is_valid_ipv4_pkt(struct rte_ipv4_hdr *pkt, uint32_t link_len) +is_valid_ipv4_pkt(struct rte_ipv4_hdr *pkt, uint32_t link_len, uint64_t ol_flags) { /* From http://www.rfc-editor.org/rfc/rfc1812.txt section 5.2.2 */ /* @@ -170,7 +170,15 @@ is_valid_ipv4_pkt(struct rte_ipv4_hdr *pkt, uint32_t link_len) return -1; /* 2. The IP checksum must be correct. */ - /* this is checked in H/W */ + /* if this is not checked in H/W, check it. */ + if ((ol_flags & RTE_ETH_RX_OFFLOAD_IPV4_CKSUM) == 0) { + uint16_t actual_cksum, expected_cksum; + actual_cksum = pkt->hdr_checksum; + pkt->hdr_checksum = 0; + expected_cksum = rte_ipv4_cksum(pkt); + if (actual_cksum != expected_cksum) + return -2; + } /* * 3. The IP version number must be 4. If the version number is not 4 diff --git a/examples/l3fwd/l3fwd_em.h b/examples/l3fwd/l3fwd_em.h index 7d051fc076..1fee2e2e6c 100644 --- a/examples/l3fwd/l3fwd_em.h +++ b/examples/l3fwd/l3fwd_em.h @@ -20,7 +20,7 @@ l3fwd_em_handle_ipv4(struct rte_mbuf *m, uint16_t portid, #ifdef DO_RFC_1812_CHECKS /* Check to make sure the packet is valid (RFC1812) */ - if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) { + if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len, m->ol_flags) < 0) { rte_pktmbuf_free(m); return BAD_PORT; } diff --git a/examples/l3fwd/l3fwd_lpm.h b/examples/l3fwd/l3fwd_lpm.h index c61b969584..4ee61e8d88 100644 --- a/examples/l3fwd/l3fwd_lpm.h +++ b/examples/l3fwd/l3fwd_lpm.h @@ -22,7 +22,7 @@ l3fwd_lpm_simple_forward(struct rte_mbuf *m, uint16_t portid, #ifdef DO_RFC_1812_CHECKS /* Check to make sure the packet is valid (RFC1812) */ - if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) { + if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len, m->ol_flags) < 0) { rte_pktmbuf_free(m); return; } diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c index 89ad546a5e..2b815375a9 100644 --- a/examples/l3fwd/main.c +++ b/examples/l3fwd/main.c @@ -1285,6 +1285,20 @@ l3fwd_poll_resource_setup(void) local_port_conf.rx_adv_conf.rss_conf.rss_hf); } + /* relax the rx offload requirement */ + if ((local_port_conf.rxmode.offloads & dev_info.rx_offload_capa) != + local_port_conf.rxmode.offloads) { + printf("Port %u requested Rx offloads 0x%"PRIx64" does not" + " match Rx offloads capabilities 0x%"PRIx64"\n", + portid, local_port_conf.rxmode.offloads, + dev_info.rx_offload_capa); + if (relax_rx_mode) { + local_port_conf.rxmode.offloads &= dev_info.rx_offload_capa; + printf("warning: modified the rx offload to 0x%"PRIx64" based on device" + " capability\n", local_port_conf.rxmode.offloads); + } + } + ret = rte_eth_dev_configure(portid, nb_rx_queue, (uint16_t)n_tx_queue, &local_port_conf); if (ret < 0) From patchwork Fri Oct 13 03:27:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Trevor Tao X-Patchwork-Id: 132585 X-Patchwork-Delegate: thomas@monjalon.net Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 8AFA74233A; Fri, 13 Oct 2023 05:27:43 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 3D7C3402CB; Fri, 13 Oct 2023 05:27:43 +0200 (CEST) Received: from m12.mail.163.com (m12.mail.163.com [220.181.12.216]) by mails.dpdk.org (Postfix) with ESMTP id B15DA402AE for ; Fri, 13 Oct 2023 05:27:40 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-Id:MIME-Version; bh=YFDcK QXxBmKfnJIAmCh1OXWaFBjQJ4wwz81aFWcEhqM=; b=lOq5eiQtKu+NcFrf2q6ia x0BRg6tH8gYbSdFFjsFXs1MSOVK93PwGdGl2Cm7gNcm06XR6QTzvz8pnIffvQKeK NwJffYwp+yulBLqUauxvNUv0xNXBcIVM8tDuWPSSv0f44S7i0TXbFQP1c+s76kB/ 6jXLSLyB5apkf02LGZyz8o= Received: from u2204.. (unknown [49.76.95.19]) by zwqz-smtp-mta-g5-1 (Coremail) with SMTP id _____wDHh4MjuShlSDqlAQ--.65325S5; Fri, 13 Oct 2023 11:27:36 +0800 (CST) From: Trevor Tao To: dev@dpdk.org Cc: Trevor Tao Subject: [PATCH v2 3/3] doc: add a relax rx mode requirement option Date: Fri, 13 Oct 2023 03:27:30 +0000 Message-Id: <20231013032730.426691-4-taozj888@163.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231013032730.426691-1-taozj888@163.com> References: <20231013032730.426691-1-taozj888@163.com> MIME-Version: 1.0 X-CM-TRANSID: _____wDHh4MjuShlSDqlAQ--.65325S5 X-Coremail-Antispam: 1Uf129KBjvJXoWxJrykXFykXrWrXw4xCw15urg_yoW8uw4fpa 1UtrZ3KrZ5Jw1Fgry5X3W8Gr4rAF4vq345WF4kt3y0qa93ury2vrW8KrW2yFWDur13X3Wf Zw4qvryxC3W29rJanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0zEoq2NUUUUU= X-Originating-IP: [49.76.95.19] X-CM-SenderInfo: hwdr6yqyyyqiywtou0bp/1tbiSBAIx1+FiSjUAAABs5 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Add an option to enable the RX mode requirement relax in release notes and l3fwd sample guide. Signed-off-by: Trevor Tao --- doc/guides/rel_notes/release_23_11.rst | 2 ++ doc/guides/sample_app_ug/l3_forward.rst | 4 +++- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/doc/guides/rel_notes/release_23_11.rst b/doc/guides/rel_notes/release_23_11.rst index f09ecd50fe..2f9e4a54c8 100644 --- a/doc/guides/rel_notes/release_23_11.rst +++ b/doc/guides/rel_notes/release_23_11.rst @@ -84,6 +84,8 @@ New Features default. The implementation using C11 standard atomic operations is enabled via the ``enable_stdatomic`` build option. +* sample: Added a command option ``--relax-rx-mode`` in l3fwd example + to relax the rx RSS/Offload mode requirement if needed. Removed Items ------------- diff --git a/doc/guides/sample_app_ug/l3_forward.rst b/doc/guides/sample_app_ug/l3_forward.rst index 1cc2c1dd1d..00283f070c 100644 --- a/doc/guides/sample_app_ug/l3_forward.rst +++ b/doc/guides/sample_app_ug/l3_forward.rst @@ -126,6 +126,8 @@ Where, * ``--parse-ptype:`` Optional, set to use software to analyze packet type. Without this option, hardware will check the packet type. +* ``--relax-rx-mode:`` Optional, set to enable rx mode relax when RSS/offload is not fully supported by the hardware. When the IPv4 cksum offload is relaxed, it is calculated by the software instead. Without this option, the RSS and cksum offload will be forced. + * ``--per-port-pool:`` Optional, set to use independent buffer pools per port. Without this option, single buffer pool is used for all ports. * ``--mode:`` Optional, Packet transfer mode for I/O, poll or eventdev. @@ -140,7 +142,7 @@ Where, * ``--event-vector-tmo:`` Optional, Max timeout to form vector in nanoseconds if event vectorization is enabled. -* ``--alg=:`` optional, ACL classify method to use, one of: +* ``--alg=:`` Optional, ACL classify method to use, one of: ``scalar|sse|avx2|neon|altivec|avx512x16|avx512x32`` * ``-E:`` Optional, enable exact match,