From patchwork Wed Aug 31 10:16:30 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?w43DsWlnbyBIdWd1ZXQ=?= X-Patchwork-Id: 12960638 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8187DECAAD5 for ; Wed, 31 Aug 2022 10:16:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229827AbiHaKQ4 (ORCPT ); Wed, 31 Aug 2022 06:16:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53156 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229570AbiHaKQv (ORCPT ); Wed, 31 Aug 2022 06:16:51 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B52BB49B76 for ; Wed, 31 Aug 2022 03:16:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1661941008; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=36LPkdM2mWvftHMo/eioWx7F2FNn5bGc4dJ7ZhnMDv4=; b=S5hf6W6q2FHnQZfwIvdpcnXf18MjUrYVH1XAOCeY6jgIYnX+FFrW5fDvSUp2J+q+4ACg/x BXrpYDO7o8uv9kHnWzM6v3O8dkFzbxUrSUhbaIX8CmQQeIEgdnT2j9G1xLQrq2jZYRcmHw PtGl1MzR2KkdFPnguipJe2fcidIyKIg= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-410-KAlZ0hL3N_iKlNH7GoNh0A-1; Wed, 31 Aug 2022 06:16:45 -0400 X-MC-Unique: KAlZ0hL3N_iKlNH7GoNh0A-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 5A9018037AE; Wed, 31 Aug 2022 10:16:45 +0000 (UTC) Received: from localhost.localdomain (unknown [10.39.194.88]) by smtp.corp.redhat.com (Postfix) with ESMTP id B1BFE2026D4C; Wed, 31 Aug 2022 10:16:43 +0000 (UTC) From: =?utf-8?b?w43DsWlnbyBIdWd1ZXQ=?= To: ecree.xilinx@gmail.com, habetsm.xilinx@gmail.com Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, netdev@vger.kernel.org, richardcochran@gmail.com, =?utf-8?b?w43DsWlnbyBIdWd1ZXQ=?= Subject: [PATCH net-next v4 2/3] sfc: support PTP over IPv6/UDP Date: Wed, 31 Aug 2022 12:16:30 +0200 Message-Id: <20220831101631.13585-3-ihuguet@redhat.com> In-Reply-To: <20220831101631.13585-1-ihuguet@redhat.com> References: <20220825090242.12848-1-ihuguet@redhat.com> <20220831101631.13585-1-ihuguet@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org commit bd4a2697e5e2 ("sfc: use hardware tx timestamps for more than PTP") added support for hardware timestamping on TX for cards of the 8000 series and newer, in an effort to provide support for other transports other than IPv4/UDP. However, timestamping was still not working on RX for these other transports. This patch add support for PTP over IPv6/UDP. Tested: sync as master and as slave is correct using ptp4l from linuxptp package, both with IPv4 and IPv6. Suggested-by: Edward Cree Signed-off-by: Íñigo Huguet --- drivers/net/ethernet/sfc/filter.h | 22 +++++++++++ drivers/net/ethernet/sfc/ptp.c | 63 ++++++++++++++++++++++++------- 2 files changed, 71 insertions(+), 14 deletions(-) diff --git a/drivers/net/ethernet/sfc/filter.h b/drivers/net/ethernet/sfc/filter.h index 4d928839d292..be72e71da027 100644 --- a/drivers/net/ethernet/sfc/filter.h +++ b/drivers/net/ethernet/sfc/filter.h @@ -9,6 +9,7 @@ #include #include +#include #include /** @@ -223,6 +224,27 @@ efx_filter_set_ipv4_local(struct efx_filter_spec *spec, u8 proto, return 0; } +/** + * efx_filter_set_ipv6_local - specify IPv6 host, transport protocol and port + * @spec: Specification to initialise + * @proto: Transport layer protocol number + * @host: Local host address (network byte order) + * @port: Local port (network byte order) + */ +static inline int +efx_filter_set_ipv6_local(struct efx_filter_spec *spec, u8 proto, + const struct in6_addr *host, __be16 port) +{ + spec->match_flags |= + EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_IP_PROTO | + EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_LOC_PORT; + spec->ether_type = htons(ETH_P_IPV6); + spec->ip_proto = proto; + memcpy(spec->loc_host, host, sizeof(spec->loc_host)); + spec->loc_port = port; + return 0; +} + /** * efx_filter_set_ipv4_full - specify IPv4 hosts, transport protocol and ports * @spec: Specification to initialise diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c index 719005d79943..9b48a5376bbd 100644 --- a/drivers/net/ethernet/sfc/ptp.c +++ b/drivers/net/ethernet/sfc/ptp.c @@ -118,9 +118,11 @@ #define PTP_MIN_LENGTH 63 -#define PTP_RXFILTERS_LEN 2 +#define PTP_RXFILTERS_LEN 4 -#define PTP_ADDRESS 0xe0000181 /* 224.0.1.129 */ +#define PTP_ADDR_IPV4 0xe0000181 /* 224.0.1.129 */ +#define PTP_ADDR_IPV6 {0xff, 0x0e, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ + 0, 0x01, 0x81} /* ff0e::181 */ #define PTP_EVENT_PORT 319 #define PTP_GENERAL_PORT 320 @@ -1297,29 +1299,49 @@ static void efx_ptp_remove_multicast_filters(struct efx_nic *efx) } } -static int efx_ptp_insert_ipv4_filter(struct efx_nic *efx, u16 port) +static void efx_ptp_init_filter(struct efx_nic *efx, + struct efx_filter_spec *rxfilter) { - struct efx_ptp_data *ptp = efx->ptp_data; - struct efx_filter_spec rxfilter; - int rc; + struct efx_channel *channel = efx->ptp_data->channel; + struct efx_rx_queue *queue = efx_channel_get_rx_queue(channel); - efx_filter_init_rx(&rxfilter, EFX_FILTER_PRI_REQUIRED, 0, - efx_rx_queue_index( - efx_channel_get_rx_queue(ptp->channel))); + efx_filter_init_rx(rxfilter, EFX_FILTER_PRI_REQUIRED, 0, + efx_rx_queue_index(queue)); +} - efx_filter_set_ipv4_local(&rxfilter, IPPROTO_UDP, htonl(PTP_ADDRESS), - htons(port)); +static int efx_ptp_insert_filter(struct efx_nic *efx, + struct efx_filter_spec *rxfilter) +{ + struct efx_ptp_data *ptp = efx->ptp_data; - rc = efx_filter_insert_filter(efx, &rxfilter, true); + int rc = efx_filter_insert_filter(efx, rxfilter, true); if (rc < 0) return rc; - ptp->rxfilters[ptp->rxfilters_count] = rc; ptp->rxfilters_count++; - return 0; } +static int efx_ptp_insert_ipv4_filter(struct efx_nic *efx, u16 port) +{ + struct efx_filter_spec rxfilter; + + efx_ptp_init_filter(efx, &rxfilter); + efx_filter_set_ipv4_local(&rxfilter, IPPROTO_UDP, htonl(PTP_ADDR_IPV4), + htons(port)); + return efx_ptp_insert_filter(efx, &rxfilter); +} + +static int efx_ptp_insert_ipv6_filter(struct efx_nic *efx, u16 port) +{ + const struct in6_addr addr = {{PTP_ADDR_IPV6}}; + struct efx_filter_spec rxfilter; + + efx_ptp_init_filter(efx, &rxfilter); + efx_filter_set_ipv6_local(&rxfilter, IPPROTO_UDP, &addr, htons(port)); + return efx_ptp_insert_filter(efx, &rxfilter); +} + static int efx_ptp_insert_multicast_filters(struct efx_nic *efx) { struct efx_ptp_data *ptp = efx->ptp_data; @@ -1336,6 +1358,19 @@ static int efx_ptp_insert_multicast_filters(struct efx_nic *efx) if (rc < 0) goto fail; + /* if the NIC supports hw timestamps by the MAC, we can support + * PTP over IPv6 + */ + if (efx_ptp_use_mac_tx_timestamps(efx)) { + rc = efx_ptp_insert_ipv6_filter(efx, PTP_EVENT_PORT); + if (rc < 0) + goto fail; + + rc = efx_ptp_insert_ipv6_filter(efx, PTP_GENERAL_PORT); + if (rc < 0) + goto fail; + } + return 0; fail: