[2/4] net: Adjustment parameters in rtnl_notify()

Message ID	20210719122506.5414-1-yajun.deng@linux.dev
State	New
Headers	show Return-Path: <netdev-owner@kernel.org> From: Yajun Deng <yajun.deng@linux.dev> To: davem@davemloft.net, kuba@kernel.org, roopa@nvidia.com, nikolay@nvidia.com, yoshfuji@linux-ipv6.org, dsahern@kernel.org, courmisch@gmail.com, jhs@mojatatu.com, xiyou.wangcong@gmail.com, jiri@resnulli.us, johannes@sipsolutions.net Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-decnet-user@lists.sourceforge.net, Yajun Deng <yajun.deng@linux.dev> Subject: [PATCH 2/4] net: Adjustment parameters in rtnl_notify() Date: Mon, 19 Jul 2021 20:25:06 +0800 Message-Id: <20210719122506.5414-1-yajun.deng@linux.dev> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	[1/4] rtnetlink: remove rtnetlink_send() in rtnetlink \| expand [1/4] rtnetlink: remove rtnetlink_send() in rtnetlink [2/4] net: Adjustment parameters in rtnl_notify()

diff --git a/include/net/netlink.h b/include/net/netlink.h index 1ceec518ab49..85320141769b 100644 --- a/include/net/netlink.h +++ b/include/net/netlink.h @@ -875,8 +875,6 @@ static inline int nlmsg_validate_deprecated(const struct nlmsghdr *nlh, policy, NL_VALIDATE_LIBERAL, extack); } - - /** * nlmsg_report - need to report back to application? * @nlh: netlink message header @@ -885,7 +883,8 @@ static inline int nlmsg_validate_deprecated(const struct nlmsghdr *nlh, */ static inline int nlmsg_report(const struct nlmsghdr *nlh) { - return !!(nlh->nlmsg_flags & NLM_F_ECHO); + + return nlh ? !!(nlh->nlmsg_flags & NLM_F_ECHO) : 0; } /** diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c index 2b862cffc03a..79d2f01280ae 100644 --- a/net/bridge/br_fdb.c +++ b/net/bridge/br_fdb.c @@ -816,7 +816,7 @@ static void fdb_notify(struct net_bridge *br, kfree_skb(skb); goto errout; } - rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC); + rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, 0, GFP_ATOMIC); return; errout: rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c index 17a720b4473f..e1fc0674edde 100644 --- a/net/bridge/br_mdb.c +++ b/net/bridge/br_mdb.c @@ -773,7 +773,7 @@ void br_mdb_notify(struct net_device *dev, goto errout; } - rtnl_notify(skb, net, 0, RTNLGRP_MDB, NULL, GFP_ATOMIC); + rtnl_notify(skb, net, 0, RTNLGRP_MDB, 0, GFP_ATOMIC); return; errout: rtnl_set_sk_err(net, RTNLGRP_MDB, err); @@ -839,7 +839,7 @@ void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port, goto errout; } - rtnl_notify(skb, net, 0, RTNLGRP_MDB, NULL, GFP_ATOMIC); + rtnl_notify(skb, net, 0, RTNLGRP_MDB, 0, GFP_ATOMIC); return; errout: diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index 8642e56059fb..05a0c67f8a8c 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -607,7 +607,7 @@ void br_info_notify(int event, const struct net_bridge *br, kfree_skb(skb); goto errout; } - rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); + rtnl_notify(skb, net, 0, RTNLGRP_LINK, 0, GFP_ATOMIC); return; errout: rtnl_set_sk_err(net, RTNLGRP_LINK, err); diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c index a08e9f193009..6ab6bfec5787 100644 --- a/net/bridge/br_vlan.c +++ b/net/bridge/br_vlan.c @@ -1795,7 +1795,7 @@ void br_vlan_notify(const struct net_bridge *br, goto out_err; nlmsg_end(skb, nlh); - rtnl_notify(skb, net, 0, RTNLGRP_BRVLAN, NULL, GFP_KERNEL); + rtnl_notify(skb, net, 0, RTNLGRP_BRVLAN, 0, GFP_KERNEL); return; out_err: diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c index a9f937975080..47a6335839b5 100644 --- a/net/core/fib_rules.c +++ b/net/core/fib_rules.c @@ -1183,7 +1183,7 @@ static void notify_rule_change(int event, struct fib_rule *rule, goto errout; } - rtnl_notify(skb, net, pid, ops->nlgroup, nlh, GFP_KERNEL); + rtnl_notify(skb, net, pid, ops->nlgroup, nlmsg_report(nlh), GFP_KERNEL); return; errout: if (err < 0) diff --git a/net/core/neighbour.c b/net/core/neighbour.c index 53e85c70c6e5..a7d7e3d78651 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -3370,7 +3370,7 @@ static void __neigh_notify(struct neighbour *n, int type, int flags, kfree_skb(skb); goto errout; } - rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC); + rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, 0, GFP_ATOMIC); return; errout: if (err < 0) diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c index 9b5a767eddd5..4c1853e4e550 100644 --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -1070,7 +1070,7 @@ static void rtnl_net_notifyid(struct net *net, int cmd, int id, u32 portid, if (err < 0) goto err_out; - rtnl_notify(msg, net, portid, RTNLGRP_NSID, nlh, gfp); + rtnl_notify(msg, net, portid, RTNLGRP_NSID, nlmsg_report(nlh), gfp); return; err_out: diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 48bb9dc6f06f..5c6b7faf4dbc 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -3814,7 +3814,7 @@ void rtmsg_ifinfo_send(struct sk_buff *skb, struct net_device *dev, gfp_t flags) { struct net *net = dev_net(dev); - rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, flags); + rtnl_notify(skb, net, 0, RTNLGRP_LINK, 0, flags); } static void rtmsg_ifinfo_event(int type, struct net_device *dev, @@ -3908,7 +3908,7 @@ static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, u16 vid, int type, goto errout; } - rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC); + rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, 0, GFP_ATOMIC); return; errout: rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); @@ -4839,7 +4839,7 @@ static int rtnl_bridge_notify(struct net_device *dev) if (!skb->len) goto errout; - rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); + rtnl_notify(skb, net, 0, RTNLGRP_LINK, 0, GFP_ATOMIC); return 0; errout: WARN_ON(err == -EMSGSIZE); diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c index b441ab330fd3..79cf618c768d 100644 --- a/net/dcb/dcbnl.c +++ b/net/dcb/dcbnl.c @@ -1395,7 +1395,7 @@ static int dcbnl_notify(struct net_device *dev, int event, int cmd, } else { /* End nlmsg and notify broadcast listeners */ nlmsg_end(skb, nlh); - rtnl_notify(skb, net, 0, RTNLGRP_DCB, NULL, GFP_KERNEL); + rtnl_notify(skb, net, 0, RTNLGRP_DCB, 0, GFP_KERNEL); } return err; diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c index d1c50a48614b..1e795723b25c 100644 --- a/net/decnet/dn_dev.c +++ b/net/decnet/dn_dev.c @@ -728,7 +728,7 @@ static void dn_ifaddr_notify(int event, struct dn_ifaddr *ifa) kfree_skb(skb); goto errout; } - rtnl_notify(skb, &init_net, 0, RTNLGRP_DECnet_IFADDR, NULL, GFP_KERNEL); + rtnl_notify(skb, &init_net, 0, RTNLGRP_DECnet_IFADDR, 0, GFP_KERNEL); return; errout: if (err < 0) diff --git a/net/decnet/dn_table.c b/net/decnet/dn_table.c index 4086f9c746af..3f545e486f81 100644 --- a/net/decnet/dn_table.c +++ b/net/decnet/dn_table.c @@ -399,7 +399,7 @@ static void dn_rtmsg_fib(int event, struct dn_fib_node *f, int z, u32 tb_id, kfree_skb(skb); goto errout; } - rtnl_notify(skb, &init_net, portid, RTNLGRP_DECnet_ROUTE, nlh, GFP_KERNEL); + rtnl_notify(skb, &init_net, portid, RTNLGRP_DECnet_ROUTE, nlmsg_report(nlh), GFP_KERNEL); return; errout: if (err < 0) diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index 73721a4448bd..063b52804122 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -1907,7 +1907,7 @@ static void rtmsg_ifa(int event, struct in_ifaddr *ifa, struct nlmsghdr *nlh, kfree_skb(skb); goto errout; } - rtnl_notify(skb, net, portid, RTNLGRP_IPV4_IFADDR, nlh, GFP_KERNEL); + rtnl_notify(skb, net, portid, RTNLGRP_IPV4_IFADDR, nlmsg_report(nlh), GFP_KERNEL); return; errout: if (err < 0) @@ -2102,7 +2102,7 @@ void inet_netconf_notify_devconf(struct net *net, int event, int type, kfree_skb(skb); goto errout; } - rtnl_notify(skb, net, 0, RTNLGRP_IPV4_NETCONF, NULL, GFP_KERNEL); + rtnl_notify(skb, net, 0, RTNLGRP_IPV4_NETCONF, 0, GFP_KERNEL); return; errout: if (err < 0) diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c index 4c0c33e4710d..785cf4cc4ddf 100644 --- a/net/ipv4/fib_semantics.c +++ b/net/ipv4/fib_semantics.c @@ -530,7 +530,7 @@ void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, goto errout; } rtnl_notify(skb, info->nl_net, info->portid, RTNLGRP_IPV4_ROUTE, - info->nlh, GFP_KERNEL); + nlmsg_report(info->nlh), GFP_KERNEL); return; errout: if (err < 0) diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index 25cf387cca5b..2ded42e3ad67 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -1078,7 +1078,7 @@ void fib_alias_hw_flags_set(struct net *net, const struct fib_rt_info *fri) goto errout; } - rtnl_notify(skb, net, 0, RTNLGRP_IPV4_ROUTE, NULL, GFP_ATOMIC); + rtnl_notify(skb, net, 0, RTNLGRP_IPV4_ROUTE, 0, GFP_ATOMIC); goto out; errout: diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index 2dda856ca260..6768f773e104 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -2383,7 +2383,7 @@ static void mroute_netlink_event(struct mr_table *mrt, struct mfc_cache *mfc, if (err < 0) goto errout; - rtnl_notify(skb, net, 0, RTNLGRP_IPV4_MROUTE, NULL, GFP_ATOMIC); + rtnl_notify(skb, net, 0, RTNLGRP_IPV4_MROUTE, 0, GFP_ATOMIC); return; errout: @@ -2447,7 +2447,7 @@ static void igmpmsg_netlink_event(struct mr_table *mrt, struct sk_buff *pkt) nlmsg_end(skb, nlh); - rtnl_notify(skb, net, 0, RTNLGRP_IPV4_MROUTE_R, NULL, GFP_ATOMIC); + rtnl_notify(skb, net, 0, RTNLGRP_IPV4_MROUTE_R, 0, GFP_ATOMIC); return; nla_put_failure: diff --git a/net/ipv4/nexthop.c b/net/ipv4/nexthop.c index 4075230b14c6..681bfb4212d4 100644 --- a/net/ipv4/nexthop.c +++ b/net/ipv4/nexthop.c @@ -857,7 +857,7 @@ static void nexthop_notify(int event, struct nexthop *nh, struct nl_info *info) } rtnl_notify(skb, info->nl_net, info->portid, RTNLGRP_NEXTHOP, - info->nlh, gfp_any()); + nlmsg_report(info->nlh), gfp_any()); return; errout: if (err < 0) @@ -978,7 +978,7 @@ static void nexthop_bucket_notify(struct nh_res_table *res_table, goto errout; } - rtnl_notify(skb, nh->net, 0, RTNLGRP_NEXTHOP, NULL, GFP_KERNEL); + rtnl_notify(skb, nh->net, 0, RTNLGRP_NEXTHOP, 0, GFP_KERNEL); return; errout: if (err < 0) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index e2f625e39455..27a4d3aa5558 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -583,7 +583,7 @@ void inet6_netconf_notify_devconf(struct net *net, int event, int type, kfree_skb(skb); goto errout; } - rtnl_notify(skb, net, 0, RTNLGRP_IPV6_NETCONF, NULL, GFP_KERNEL); + rtnl_notify(skb, net, 0, RTNLGRP_IPV6_NETCONF, 0, GFP_KERNEL); return; errout: rtnl_set_sk_err(net, RTNLGRP_IPV6_NETCONF, err); @@ -5442,7 +5442,7 @@ static void inet6_ifa_notify(int event, struct inet6_ifaddr *ifa) kfree_skb(skb); goto errout; } - rtnl_notify(skb, net, 0, RTNLGRP_IPV6_IFADDR, NULL, GFP_ATOMIC); + rtnl_notify(skb, net, 0, RTNLGRP_IPV6_IFADDR, 0, GFP_ATOMIC); return; errout: if (err < 0) @@ -5979,7 +5979,7 @@ void inet6_ifinfo_notify(int event, struct inet6_dev *idev) kfree_skb(skb); goto errout; } - rtnl_notify(skb, net, 0, RTNLGRP_IPV6_IFINFO, NULL, GFP_ATOMIC); + rtnl_notify(skb, net, 0, RTNLGRP_IPV6_IFINFO, 0, GFP_ATOMIC); return; errout: if (err < 0) @@ -6051,7 +6051,7 @@ static void inet6_prefix_notify(int event, struct inet6_dev *idev, kfree_skb(skb); goto errout; } - rtnl_notify(skb, net, 0, RTNLGRP_IPV6_PREFIX, NULL, GFP_ATOMIC); + rtnl_notify(skb, net, 0, RTNLGRP_IPV6_PREFIX, 0, GFP_ATOMIC); return; errout: if (err < 0) diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c index 06b0d2c329b9..daa4dce01964 100644 --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -2412,7 +2412,7 @@ static void mr6_netlink_event(struct mr_table *mrt, struct mfc6_cache *mfc, if (err < 0) goto errout; - rtnl_notify(skb, net, 0, RTNLGRP_IPV6_MROUTE, NULL, GFP_ATOMIC); + rtnl_notify(skb, net, 0, RTNLGRP_IPV6_MROUTE, 0, GFP_ATOMIC); return; errout: @@ -2476,7 +2476,7 @@ static void mrt6msg_netlink_event(struct mr_table *mrt, struct sk_buff *pkt) nlmsg_end(skb, nlh); - rtnl_notify(skb, net, 0, RTNLGRP_IPV6_MROUTE_R, NULL, GFP_ATOMIC); + rtnl_notify(skb, net, 0, RTNLGRP_IPV6_MROUTE_R, 0, GFP_ATOMIC); return; nla_put_failure: diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index c467c6419893..bd8219f2d75f 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1157,7 +1157,7 @@ static void ndisc_ra_useropt(struct sk_buff *ra, struct nd_opt_hdr *opt) goto nla_put_failure; nlmsg_end(skb, nlh); - rtnl_notify(skb, net, 0, RTNLGRP_ND_USEROPT, NULL, GFP_ATOMIC); + rtnl_notify(skb, net, 0, RTNLGRP_ND_USEROPT, 0, GFP_ATOMIC); return; nla_put_failure: diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 7b756a7dc036..c107fcf539d6 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -3968,7 +3968,7 @@ static int __ip6_del_rt_siblings(struct fib6_info *rt, struct fib6_config *cfg) if (skb) { rtnl_notify(skb, net, info->portid, RTNLGRP_IPV6_ROUTE, - info->nlh, gfp_any()); + nlmsg_report(info->nlh), gfp_any()); } return err; } @@ -6149,7 +6149,7 @@ void inet6_rt_notify(int event, struct fib6_info *rt, struct nl_info *info, goto errout; } rtnl_notify(skb, net, info->portid, RTNLGRP_IPV6_ROUTE, - info->nlh, gfp_any()); + nlmsg_report(info->nlh), gfp_any()); return; errout: if (err < 0) @@ -6175,8 +6175,9 @@ void fib6_rt_update(struct net *net, struct fib6_info *rt, kfree_skb(skb); goto errout; } + rtnl_notify(skb, net, info->portid, RTNLGRP_IPV6_ROUTE, - info->nlh, gfp_any()); + nlmsg_report(info->nlh), gfp_any()); return; errout: if (err < 0) @@ -6227,7 +6228,7 @@ void fib6_info_hw_flags_set(struct net *net, struct fib6_info *f6i, goto errout; } - rtnl_notify(skb, net, 0, RTNLGRP_IPV6_ROUTE, NULL, GFP_KERNEL); + rtnl_notify(skb, net, 0, RTNLGRP_IPV6_ROUTE, 0, GFP_KERNEL); return; errout: diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c index 05a21dd072df..2915be869471 100644 --- a/net/mpls/af_mpls.c +++ b/net/mpls/af_mpls.c @@ -1197,7 +1197,7 @@ static void mpls_netconf_notify_devconf(struct net *net, int event, goto errout; } - rtnl_notify(skb, net, 0, RTNLGRP_MPLS_NETCONF, NULL, GFP_KERNEL); + rtnl_notify(skb, net, 0, RTNLGRP_MPLS_NETCONF, 0, GFP_KERNEL); return; errout: if (err < 0) @@ -2257,7 +2257,7 @@ static void rtmsg_lfib(int event, u32 label, struct mpls_route *rt, kfree_skb(skb); goto errout; } - rtnl_notify(skb, net, portid, RTNLGRP_MPLS_ROUTE, nlh, GFP_KERNEL); + rtnl_notify(skb, net, portid, RTNLGRP_MPLS_ROUTE, nlmsg_report(nlh), GFP_KERNEL); return; errout: diff --git a/net/phonet/pn_netlink.c b/net/phonet/pn_netlink.c index 59aebe296890..03e04d0b8453 100644 --- a/net/phonet/pn_netlink.c +++ b/net/phonet/pn_netlink.c @@ -38,7 +38,7 @@ void phonet_address_notify(int event, struct net_device *dev, u8 addr) goto errout; } rtnl_notify(skb, dev_net(dev), 0, - RTNLGRP_PHONET_IFADDR, NULL, GFP_KERNEL); + RTNLGRP_PHONET_IFADDR, 0, GFP_KERNEL); return; errout: rtnl_set_sk_err(dev_net(dev), RTNLGRP_PHONET_IFADDR, err); @@ -204,7 +204,7 @@ void rtm_phonet_notify(int event, struct net_device *dev, u8 dst) goto errout; } rtnl_notify(skb, dev_net(dev), 0, - RTNLGRP_PHONET_ROUTE, NULL, GFP_KERNEL); + RTNLGRP_PHONET_ROUTE, 0, GFP_KERNEL); return; errout: rtnl_set_sk_err(dev_net(dev), RTNLGRP_PHONET_ROUTE, err); diff --git a/net/wireless/wext-core.c b/net/wireless/wext-core.c index 76a80a41615b..7fb2c3144254 100644 --- a/net/wireless/wext-core.c +++ b/net/wireless/wext-core.c @@ -350,7 +350,7 @@ void wireless_nlevent_flush(void) down_read(&net_rwsem); for_each_net(net) { while ((skb = skb_dequeue(&net->wext_nlevents))) - rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, + rtnl_notify(skb, net, 0, RTNLGRP_LINK, 0, GFP_KERNEL); } up_read(&net_rwsem);

[2/4] net: Adjustment parameters in rtnl_notify()

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