From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nicolas Dichtel Subject: [PATCH net-next v3 2/5] netns: introduce 'struct net_fill_args' Date: Thu, 22 Nov 2018 23:22:12 +0100 Message-ID: <20181122222215.23554-3-nicolas.dichtel@6wind.com> References: <20181122155031.3495-1-nicolas.dichtel@6wind.com> <20181122222215.23554-1-nicolas.dichtel@6wind.com> Cc: netdev@vger.kernel.org, davem@davemloft.net, Nicolas Dichtel To: dsahern@gmail.com Return-path: Received: from host.76.145.23.62.rev.coltfrance.com ([62.23.145.76]:34383 "EHLO proxy.6wind.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392513AbeKWJEA (ORCPT ); Fri, 23 Nov 2018 04:04:00 -0500 In-Reply-To: <20181122222215.23554-1-nicolas.dichtel@6wind.com> Sender: netdev-owner@vger.kernel.org List-ID: This is a preparatory work. To avoid having to much arguments for the function rtnl_net_fill(), a new structure is defined. Signed-off-by: Nicolas Dichtel Reviewed-by: David Ahern --- net/core/net_namespace.c | 48 ++++++++++++++++++++++++++++------------ 1 file changed, 34 insertions(+), 14 deletions(-) diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c index 52b9620e3457..f8a5966b086c 100644 --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -738,20 +738,28 @@ static int rtnl_net_get_size(void) ; } -static int rtnl_net_fill(struct sk_buff *skb, u32 portid, u32 seq, int flags, - int cmd, int nsid) +struct net_fill_args { + u32 portid; + u32 seq; + int flags; + int cmd; + int nsid; +}; + +static int rtnl_net_fill(struct sk_buff *skb, struct net_fill_args *args) { struct nlmsghdr *nlh; struct rtgenmsg *rth; - nlh = nlmsg_put(skb, portid, seq, cmd, sizeof(*rth), flags); + nlh = nlmsg_put(skb, args->portid, args->seq, args->cmd, sizeof(*rth), + args->flags); if (!nlh) return -EMSGSIZE; rth = nlmsg_data(nlh); rth->rtgen_family = AF_UNSPEC; - if (nla_put_s32(skb, NETNSA_NSID, nsid)) + if (nla_put_s32(skb, NETNSA_NSID, args->nsid)) goto nla_put_failure; nlmsg_end(skb, nlh); @@ -767,10 +775,15 @@ static int rtnl_net_getid(struct sk_buff *skb, struct nlmsghdr *nlh, { struct net *net = sock_net(skb->sk); struct nlattr *tb[NETNSA_MAX + 1]; + struct net_fill_args fillargs = { + .portid = NETLINK_CB(skb).portid, + .seq = nlh->nlmsg_seq, + .cmd = RTM_NEWNSID, + }; struct nlattr *nla; struct sk_buff *msg; struct net *peer; - int err, id; + int err; err = nlmsg_parse(nlh, sizeof(struct rtgenmsg), tb, NETNSA_MAX, rtnl_net_policy, extack); @@ -799,9 +812,8 @@ static int rtnl_net_getid(struct sk_buff *skb, struct nlmsghdr *nlh, goto out; } - id = peernet2id(net, peer); - err = rtnl_net_fill(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 0, - RTM_NEWNSID, id); + fillargs.nsid = peernet2id(net, peer); + err = rtnl_net_fill(msg, &fillargs); if (err < 0) goto err_out; @@ -817,7 +829,7 @@ static int rtnl_net_getid(struct sk_buff *skb, struct nlmsghdr *nlh, struct rtnl_net_dump_cb { struct sk_buff *skb; - struct netlink_callback *cb; + struct net_fill_args fillargs; int idx; int s_idx; }; @@ -830,9 +842,8 @@ static int rtnl_net_dumpid_one(int id, void *peer, void *data) if (net_cb->idx < net_cb->s_idx) goto cont; - ret = rtnl_net_fill(net_cb->skb, NETLINK_CB(net_cb->cb->skb).portid, - net_cb->cb->nlh->nlmsg_seq, NLM_F_MULTI, - RTM_NEWNSID, id); + net_cb->fillargs.nsid = id; + ret = rtnl_net_fill(net_cb->skb, &net_cb->fillargs); if (ret < 0) return ret; @@ -846,7 +857,12 @@ static int rtnl_net_dumpid(struct sk_buff *skb, struct netlink_callback *cb) struct net *net = sock_net(skb->sk); struct rtnl_net_dump_cb net_cb = { .skb = skb, - .cb = cb, + .fillargs = { + .portid = NETLINK_CB(cb->skb).portid, + .seq = cb->nlh->nlmsg_seq, + .flags = NLM_F_MULTI, + .cmd = RTM_NEWNSID, + }, .idx = 0, .s_idx = cb->args[0], }; @@ -867,6 +883,10 @@ static int rtnl_net_dumpid(struct sk_buff *skb, struct netlink_callback *cb) static void rtnl_net_notifyid(struct net *net, int cmd, int id) { + struct net_fill_args fillargs = { + .cmd = cmd, + .nsid = id, + }; struct sk_buff *msg; int err = -ENOMEM; @@ -874,7 +894,7 @@ static void rtnl_net_notifyid(struct net *net, int cmd, int id) if (!msg) goto out; - err = rtnl_net_fill(msg, 0, 0, 0, cmd, id); + err = rtnl_net_fill(msg, &fillargs); if (err < 0) goto err_out; -- 2.18.0