From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 27472C433EA for ; Wed, 15 Jul 2020 16:41:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ECB0620658 for ; Wed, 15 Jul 2020 16:41:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="gDcZHB3B" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728017AbgGOQlQ (ORCPT ); Wed, 15 Jul 2020 12:41:16 -0400 Received: from fllv0015.ext.ti.com ([198.47.19.141]:36156 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726983AbgGOQka (ORCPT ); Wed, 15 Jul 2020 12:40:30 -0400 Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 06FGeMjZ052852; Wed, 15 Jul 2020 11:40:22 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1594831222; bh=zhF5bs2JZ7GV3G68uf1qS5GvslrPLUNhYGrOJHWcpOg=; h=From:To:Subject:Date:In-Reply-To:References; b=gDcZHB3BKaHeCS6ARHFeA+Xo0mIGVN9MXNDZRvG1nLNHdnamuL+MSlfCUzeNPgkZT KDKgO4Z8FODWvUeXrp2Mb1kWcFNAPdXWWlsgSd4ullmPRT1laZ6RHqCwomexMjkOtO MNNtP/oRvBKuv7ys59GS73zWONC3S33Viv37CdbU= Received: from DLEE112.ent.ti.com (dlee112.ent.ti.com [157.170.170.23]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 06FGeMit079861 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 15 Jul 2020 11:40:22 -0500 Received: from DLEE103.ent.ti.com (157.170.170.33) by DLEE112.ent.ti.com (157.170.170.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3; Wed, 15 Jul 2020 11:40:21 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DLEE103.ent.ti.com (157.170.170.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3 via Frontend Transport; Wed, 15 Jul 2020 11:40:21 -0500 Received: from uda0868495.fios-router.home (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id 06FGeCvd081717; Wed, 15 Jul 2020 11:40:20 -0500 From: Murali Karicheri To: , , , , , , , Subject: [net-next PATCH v2 5/9] net: hsr: introduce protocol specific function pointers Date: Wed, 15 Jul 2020 12:40:06 -0400 Message-ID: <20200715164012.1222-6-m-karicheri2@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200715164012.1222-1-m-karicheri2@ti.com> References: <20200715164012.1222-1-m-karicheri2@ti.com> MIME-Version: 1.0 Content-Type: text/plain X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org As a preparatory patch to introduce support for PRP protocol, add a protocol ops ptr in the private hsr structure to hold function pointers as some of the functions at protocol level packet handling is different for HSR vs PRP. It is expected that PRP will add its of set of functions for protocol handling. Modify existing hsr_announce() function to call proto_ops->send_sv_frame() to send supervision frame for HSR. This is expected to be different for PRP. So introduce a ops function ptr, send_sv_frame() for the same and initialize it to send_hsr_supervsion_frame(). Modify hsr_announce() to call proto_ops->send_sv_frame(). Signed-off-by: Murali Karicheri --- net/hsr/hsr_device.c | 74 ++++++++++++++++++++++++-------------------- net/hsr/hsr_main.h | 6 ++++ 2 files changed, 47 insertions(+), 33 deletions(-) diff --git a/net/hsr/hsr_device.c b/net/hsr/hsr_device.c index b1effa8b2403..5ca06b4e710e 100644 --- a/net/hsr/hsr_device.c +++ b/net/hsr/hsr_device.c @@ -230,7 +230,7 @@ static const struct header_ops hsr_header_ops = { .parse = eth_header_parse, }; -static struct sk_buff *hsr_init_skb(struct hsr_port *master, u8 hsr_ver) +static struct sk_buff *hsr_init_skb(struct hsr_port *master, u16 proto) { struct hsr_priv *hsr = master->hsr; struct sk_buff *skb; @@ -247,10 +247,10 @@ static struct sk_buff *hsr_init_skb(struct hsr_port *master, u8 hsr_ver) skb_reserve(skb, hlen); skb->dev = master->dev; - skb->protocol = htons(hsr_ver ? ETH_P_HSR : ETH_P_PRP); + skb->protocol = htons(proto); skb->priority = TC_PRIO_CONTROL; - if (dev_hard_header(skb, skb->dev, (hsr_ver ? ETH_P_HSR : ETH_P_PRP), + if (dev_hard_header(skb, skb->dev, proto, hsr->sup_multicast_addr, skb->dev->dev_addr, skb->len) <= 0) goto out; @@ -267,47 +267,62 @@ static struct sk_buff *hsr_init_skb(struct hsr_port *master, u8 hsr_ver) } static void send_hsr_supervision_frame(struct hsr_port *master, - u8 type, u8 hsr_ver) + unsigned long *interval) { - struct sk_buff *skb; - struct hsr_tag *hsr_tag; - struct hsr_sup_tag *hsr_stag; + struct hsr_priv *hsr = master->hsr; + __u8 type = HSR_TLV_LIFE_CHECK; + struct hsr_tag *hsr_tag = NULL; struct hsr_sup_payload *hsr_sp; + struct hsr_sup_tag *hsr_stag; unsigned long irqflags; + struct sk_buff *skb; + u16 proto; + + *interval = msecs_to_jiffies(HSR_LIFE_CHECK_INTERVAL); + if (hsr->announce_count < 3 && hsr->prot_version == 0) { + type = HSR_TLV_ANNOUNCE; + *interval = msecs_to_jiffies(HSR_ANNOUNCE_INTERVAL); + hsr->announce_count++; + } + + if (!hsr->prot_version) + proto = ETH_P_PRP; + else + proto = ETH_P_HSR; - skb = hsr_init_skb(master, hsr_ver); + skb = hsr_init_skb(master, proto); if (!skb) { WARN_ONCE(1, "HSR: Could not send supervision frame\n"); return; } - if (hsr_ver > 0) { + if (hsr->prot_version > 0) { hsr_tag = skb_put(skb, sizeof(struct hsr_tag)); hsr_tag->encap_proto = htons(ETH_P_PRP); set_hsr_tag_LSDU_size(hsr_tag, HSR_V1_SUP_LSDUSIZE); } hsr_stag = skb_put(skb, sizeof(struct hsr_sup_tag)); - set_hsr_stag_path(hsr_stag, (hsr_ver ? 0x0 : 0xf)); - set_hsr_stag_HSR_ver(hsr_stag, hsr_ver); + set_hsr_stag_path(hsr_stag, (hsr->prot_version ? 0x0 : 0xf)); + set_hsr_stag_HSR_ver(hsr_stag, hsr->prot_version); /* From HSRv1 on we have separate supervision sequence numbers. */ spin_lock_irqsave(&master->hsr->seqnr_lock, irqflags); - if (hsr_ver > 0) { - hsr_stag->sequence_nr = htons(master->hsr->sup_sequence_nr); - hsr_tag->sequence_nr = htons(master->hsr->sequence_nr); - master->hsr->sup_sequence_nr++; - master->hsr->sequence_nr++; + if (hsr->prot_version > 0) { + hsr_stag->sequence_nr = htons(hsr->sup_sequence_nr); + hsr->sup_sequence_nr++; + hsr_tag->sequence_nr = htons(hsr->sequence_nr); + hsr->sequence_nr++; } else { - hsr_stag->sequence_nr = htons(master->hsr->sequence_nr); - master->hsr->sequence_nr++; + hsr_stag->sequence_nr = htons(hsr->sequence_nr); + hsr->sequence_nr++; } spin_unlock_irqrestore(&master->hsr->seqnr_lock, irqflags); hsr_stag->HSR_TLV_type = type; /* TODO: Why 12 in HSRv0? */ - hsr_stag->HSR_TLV_length = - hsr_ver ? sizeof(struct hsr_sup_payload) : 12; + hsr_stag->HSR_TLV_length = hsr->prot_version ? + sizeof(struct hsr_sup_payload) : 12; /* Payload: MacAddressA */ hsr_sp = skb_put(skb, sizeof(struct hsr_sup_payload)); @@ -333,19 +348,7 @@ static void hsr_announce(struct timer_list *t) rcu_read_lock(); master = hsr_port_get_hsr(hsr, HSR_PT_MASTER); - - if (hsr->announce_count < 3 && hsr->prot_version == 0) { - send_hsr_supervision_frame(master, HSR_TLV_ANNOUNCE, - hsr->prot_version); - hsr->announce_count++; - - interval = msecs_to_jiffies(HSR_ANNOUNCE_INTERVAL); - } else { - send_hsr_supervision_frame(master, HSR_TLV_LIFE_CHECK, - hsr->prot_version); - - interval = msecs_to_jiffies(HSR_LIFE_CHECK_INTERVAL); - } + hsr->proto_ops->send_sv_frame(master, &interval); if (is_admin_up(master->dev)) mod_timer(&hsr->announce_timer, jiffies + interval); @@ -382,6 +385,10 @@ static struct device_type hsr_type = { .name = "hsr", }; +static struct hsr_proto_ops hsr_ops = { + .send_sv_frame = send_hsr_supervision_frame, +}; + void hsr_dev_setup(struct net_device *dev) { eth_hw_addr_random(dev); @@ -445,6 +452,7 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2], if (protocol_version == PRP_V1) return -EPROTONOSUPPORT; + hsr->proto_ops = &hsr_ops; /* Make sure we recognize frames from ourselves in hsr_rcv() */ res = hsr_create_self_node(hsr, hsr_dev->dev_addr, slave[1]->dev_addr); diff --git a/net/hsr/hsr_main.h b/net/hsr/hsr_main.h index 8cf10d67d5f9..671270115a50 100644 --- a/net/hsr/hsr_main.h +++ b/net/hsr/hsr_main.h @@ -140,6 +140,11 @@ enum hsr_version { PRP_V1, }; +struct hsr_proto_ops { + /* format and send supervision frame */ + void (*send_sv_frame)(struct hsr_port *port, unsigned long *interval); +}; + struct hsr_priv { struct rcu_head rcu_head; struct list_head ports; @@ -153,6 +158,7 @@ struct hsr_priv { enum hsr_version prot_version; /* Indicate if HSRv0, HSRv1 or PRPv1 */ spinlock_t seqnr_lock; /* locking for sequence_nr */ spinlock_t list_lock; /* locking for node list */ + struct hsr_proto_ops *proto_ops; unsigned char sup_multicast_addr[ETH_ALEN]; #ifdef CONFIG_DEBUG_FS struct dentry *node_tbl_root; -- 2.17.1