From patchwork Fri Jul 17 15:15:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Murali Karicheri X-Patchwork-Id: 1331249 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=ti.com header.i=@ti.com header.a=rsa-sha256 header.s=ti-com-17Q1 header.b=Fz3+CGpb; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4B7ZSP0fM7z9sTC for ; Sat, 18 Jul 2020 01:15:32 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727854AbgGQPPY (ORCPT ); Fri, 17 Jul 2020 11:15:24 -0400 Received: from fllv0016.ext.ti.com ([198.47.19.142]:54312 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727101AbgGQPPV (ORCPT ); Fri, 17 Jul 2020 11:15:21 -0400 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 06HFFDmC081673; Fri, 17 Jul 2020 10:15:13 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1594998913; bh=XoyH1qcQRGYflLne2efG5ubW4jRaYKybjOR27SaPtws=; h=From:To:Subject:Date:In-Reply-To:References; b=Fz3+CGpb0d7ABJxEVnSlpMbNLXxVr7FB+SYc1tRF6cUvPvIzSnxHFSEncjlSUvFC9 Jhv9JgxJZ4M/wUpioWD2TMGj4q/eJ7aaBtTHesEX1yZAV1ei/hQMbiQHSMuwdNKT/J j5Te1wgWD4XH2ilKHDFxAKYHJREwjhdMZlzcCOYU= Received: from DLEE113.ent.ti.com (dlee113.ent.ti.com [157.170.170.24]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 06HFFDpG111754 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 17 Jul 2020 10:15:13 -0500 Received: from DLEE112.ent.ti.com (157.170.170.23) by DLEE113.ent.ti.com (157.170.170.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3; Fri, 17 Jul 2020 10:15:13 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) 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 via Frontend Transport; Fri, 17 Jul 2020 10:15:13 -0500 Received: from uda0868495.fios-router.home (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 06HFFBmf010522; Fri, 17 Jul 2020 10:15:13 -0500 From: Murali Karicheri To: , , , , , , , Subject: [net-next PATCH v3 3/7] net: hsr: introduce protocol specific function pointers Date: Fri, 17 Jul 2020 11:15:07 -0400 Message-ID: <20200717151511.329-4-m-karicheri2@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200717151511.329-1-m-karicheri2@ti.com> References: <20200717151511.329-1-m-karicheri2@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@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 600b9da4a44e..006e715eccb6 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;