From patchwork Fri Feb 1 18:17:24 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiri Pirko X-Patchwork-Id: 217560 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id E89A62C0086 for ; Sat, 2 Feb 2013 05:17:41 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755396Ab3BASRi (ORCPT ); Fri, 1 Feb 2013 13:17:38 -0500 Received: from mail-ea0-f170.google.com ([209.85.215.170]:51350 "EHLO mail-ea0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753309Ab3BASRg (ORCPT ); Fri, 1 Feb 2013 13:17:36 -0500 Received: by mail-ea0-f170.google.com with SMTP id a11so1925373eaa.29 for ; Fri, 01 Feb 2013 10:17:35 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=x-received:from:to:cc:subject:date:message-id:x-mailer:in-reply-to :references:x-gm-message-state; bh=L73D1EFjauVkoGTu1n+6ln7YZBBiXbueIDMLxDAoxRw=; b=lnjo8zr1STcuuvFtGUDeBkd/4PtAtEfUoBd/3hX5ac7tYBJ9v9+jwU672gQjjzLs/c yFUtgl7+bljQQ4lxk9N31CMJwRm+dMrzP63eTBJ8AvaNpUSWZioYySibSOG6nWaPJ2kT RcZpDS+2Sn7Lpm6RADFd00KtdPdgJGV5qPtRPUtYYxPi0GPdt6jLGof7DyOUCe9o2qaM 2TwcvO/thcZDf05xbolOqN3kh1f3VAuTyLi/pMye9W2Q2oIYFKkEmpPcgDPm+v6WjwJb SU47AihOQTimUghhccdd+Yez/2WO8PwY1EvaXWmoUJwwP9/ZX03aT7o7DtSCRU3y4Osq CG8g== X-Received: by 10.14.216.70 with SMTP id f46mr42245631eep.12.1359742654974; Fri, 01 Feb 2013 10:17:34 -0800 (PST) Received: from localhost (sun-0.pirko.cz. [84.16.102.25]) by mx.google.com with ESMTPS id 43sm13706641eed.10.2013.02.01.10.17.33 (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Fri, 01 Feb 2013 10:17:34 -0800 (PST) From: Jiri Pirko To: netdev@vger.kernel.org Cc: davem@davemloft.net, fbl@redhat.com Subject: [patch net-next v2 1/3] team: handle sending port list in the same way option list is sent Date: Fri, 1 Feb 2013 19:17:24 +0100 Message-Id: <1359742646-1485-2-git-send-email-jiri@resnulli.us> X-Mailer: git-send-email 1.8.1 In-Reply-To: <1359742646-1485-1-git-send-email-jiri@resnulli.us> References: <1359742646-1485-1-git-send-email-jiri@resnulli.us> X-Gm-Message-State: ALoCoQlE+lAmaLnxPBe/KR9xtvMdrluGBfpOc4nnXy8zGpcQFrLRJp8r4Ppp2n1YXQYLdn5VqtL7 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Essentially do the same thing with port list as with option list. Multipart netlink message. Side effect is that port event message can send port which is not longer in team->port_list. Signed-off-by: Jiri Pirko --- drivers/net/team/team.c | 177 +++++++++++++++++++++++++----------------------- 1 file changed, 93 insertions(+), 84 deletions(-) diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c index 70d5d6b..738f744 100644 --- a/drivers/net/team/team.c +++ b/drivers/net/team/team.c @@ -1965,30 +1965,6 @@ static void team_nl_team_put(struct team *team) dev_put(team->dev); } -static int team_nl_send_generic(struct genl_info *info, struct team *team, - int (*fill_func)(struct sk_buff *skb, - struct genl_info *info, - int flags, struct team *team)) -{ - struct sk_buff *skb; - int err; - - skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); - if (!skb) - return -ENOMEM; - - err = fill_func(skb, info, NLM_F_ACK, team); - if (err < 0) - goto err_fill; - - err = genlmsg_unicast(genl_info_net(info), skb, info->snd_portid); - return err; - -err_fill: - nlmsg_free(skb); - return err; -} - typedef int team_nl_send_func_t(struct sk_buff *skb, struct team *team, u32 portid); @@ -2333,16 +2309,57 @@ team_put: return err; } -static int team_nl_fill_port_list_get(struct sk_buff *skb, - u32 portid, u32 seq, int flags, - struct team *team, - bool fillall) +static int team_nl_fill_one_port_get(struct sk_buff *skb, + struct team_port *port) +{ + struct nlattr *port_item; + + port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT); + if (!port_item) + goto nest_cancel; + if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex)) + goto nest_cancel; + if (port->changed) { + if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED)) + goto nest_cancel; + port->changed = false; + } + if ((port->removed && + nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) || + (port->state.linkup && + nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) || + nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) || + nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex)) + goto nest_cancel; + nla_nest_end(skb, port_item); + return 0; + +nest_cancel: + nla_nest_cancel(skb, port_item); + return -EMSGSIZE; +} + +static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq, + int flags, team_nl_send_func_t *send_func, + struct team_port *one_port) { struct nlattr *port_list; + struct nlmsghdr *nlh; void *hdr; struct team_port *port; + int err; + struct sk_buff *skb = NULL; + bool incomplete; + int i; - hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags, + port = list_first_entry(&team->port_list, struct team_port, list); + +start_again: + err = __send_and_alloc_skb(&skb, team, portid, send_func); + if (err) + return err; + + hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI, TEAM_CMD_PORT_LIST_GET); if (!hdr) return -EMSGSIZE; @@ -2353,47 +2370,54 @@ static int team_nl_fill_port_list_get(struct sk_buff *skb, if (!port_list) goto nla_put_failure; - list_for_each_entry(port, &team->port_list, list) { - struct nlattr *port_item; + i = 0; + incomplete = false; - /* Include only changed ports if fill all mode is not on */ - if (!fillall && !port->changed) - continue; - port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT); - if (!port_item) - goto nla_put_failure; - if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex)) - goto nla_put_failure; - if (port->changed) { - if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED)) - goto nla_put_failure; - port->changed = false; + /* If one port is selected, called wants to send port list containing + * only this port. Otherwise go through all listed ports and send all + */ + if (one_port) { + err = team_nl_fill_one_port_get(skb, one_port); + if (err) + goto errout; + } else { + list_for_each_entry(port, &team->port_list, list) { + err = team_nl_fill_one_port_get(skb, port); + if (err) { + if (err == -EMSGSIZE) { + if (!i) + goto errout; + incomplete = true; + break; + } + goto errout; + } + i++; } - if ((port->removed && - nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) || - (port->state.linkup && - nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) || - nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) || - nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex)) - goto nla_put_failure; - nla_nest_end(skb, port_item); } nla_nest_end(skb, port_list); - return genlmsg_end(skb, hdr); + genlmsg_end(skb, hdr); + if (incomplete) + goto start_again; + +send_done: + nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI); + if (!nlh) { + err = __send_and_alloc_skb(&skb, team, portid, send_func); + if (err) + goto errout; + goto send_done; + } + + return send_func(skb, team, portid); nla_put_failure: + err = -EMSGSIZE; +errout: genlmsg_cancel(skb, hdr); - return -EMSGSIZE; -} - -static int team_nl_fill_port_list_get_all(struct sk_buff *skb, - struct genl_info *info, int flags, - struct team *team) -{ - return team_nl_fill_port_list_get(skb, info->snd_portid, - info->snd_seq, NLM_F_ACK, - team, true); + nlmsg_free(skb); + return err; } static int team_nl_cmd_port_list_get(struct sk_buff *skb, @@ -2406,7 +2430,8 @@ static int team_nl_cmd_port_list_get(struct sk_buff *skb, if (!team) return -EINVAL; - err = team_nl_send_generic(info, team, team_nl_fill_port_list_get_all); + err = team_nl_send_port_list_get(team, info->snd_portid, info->snd_seq, + NLM_F_ACK, team_nl_send_unicast, NULL); team_nl_team_put(team); @@ -2457,27 +2482,11 @@ static int team_nl_send_event_options_get(struct team *team, sel_opt_inst_list); } -static int team_nl_send_event_port_list_get(struct team *team) +static int team_nl_send_event_port_get(struct team *team, + struct team_port *port) { - struct sk_buff *skb; - int err; - struct net *net = dev_net(team->dev); - - skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); - if (!skb) - return -ENOMEM; - - err = team_nl_fill_port_list_get(skb, 0, 0, 0, team, false); - if (err < 0) - goto err_fill; - - err = genlmsg_multicast_netns(net, skb, 0, team_change_event_mcgrp.id, - GFP_KERNEL); - return err; - -err_fill: - nlmsg_free(skb); - return err; + return team_nl_send_port_list_get(team, 0, 0, 0, team_nl_send_multicast, + port); } static int team_nl_init(void) @@ -2550,7 +2559,7 @@ static void __team_port_change_send(struct team_port *port, bool linkup) port->state.duplex = 0; send_event: - err = team_nl_send_event_port_list_get(port->team); + err = team_nl_send_event_port_get(port->team, port); if (err && err != -ESRCH) netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n", port->dev->name, err);