netfilter: Add nfnl_msg_type() helper function
Add and use nfnl_msg_type() function to replace opencoded nfnetlink message type. I suggested this change, Arushi Singhal made an initial patch to address this but was missing several spots. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
parent
2c62e0bc68
commit
dedb67c4b4
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@ -41,6 +41,11 @@ int nfnetlink_set_err(struct net *net, u32 portid, u32 group, int error);
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int nfnetlink_unicast(struct sk_buff *skb, struct net *net, u32 portid,
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int nfnetlink_unicast(struct sk_buff *skb, struct net *net, u32 portid,
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int flags);
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int flags);
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static inline u16 nfnl_msg_type(u8 subsys, u8 msg_type)
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{
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return subsys << 8 | msg_type;
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}
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void nfnl_lock(__u8 subsys_id);
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void nfnl_lock(__u8 subsys_id);
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void nfnl_unlock(__u8 subsys_id);
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void nfnl_unlock(__u8 subsys_id);
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#ifdef CONFIG_PROVE_LOCKING
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#ifdef CONFIG_PROVE_LOCKING
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@ -769,7 +769,7 @@ start_msg(struct sk_buff *skb, u32 portid, u32 seq, unsigned int flags,
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struct nlmsghdr *nlh;
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struct nlmsghdr *nlh;
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struct nfgenmsg *nfmsg;
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struct nfgenmsg *nfmsg;
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nlh = nlmsg_put(skb, portid, seq, cmd | (NFNL_SUBSYS_IPSET << 8),
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nlh = nlmsg_put(skb, portid, seq, nfnl_msg_type(NFNL_SUBSYS_IPSET, cmd),
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sizeof(*nfmsg), flags);
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sizeof(*nfmsg), flags);
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if (!nlh)
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if (!nlh)
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return NULL;
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return NULL;
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@ -467,7 +467,7 @@ ctnetlink_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type,
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struct nlattr *nest_parms;
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struct nlattr *nest_parms;
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unsigned int flags = portid ? NLM_F_MULTI : 0, event;
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unsigned int flags = portid ? NLM_F_MULTI : 0, event;
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event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_CT_NEW);
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event = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK, IPCTNL_MSG_CT_NEW);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
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if (nlh == NULL)
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if (nlh == NULL)
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goto nlmsg_failure;
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goto nlmsg_failure;
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@ -652,7 +652,7 @@ ctnetlink_conntrack_event(unsigned int events, struct nf_ct_event *item)
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if (skb == NULL)
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if (skb == NULL)
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goto errout;
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goto errout;
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type |= NFNL_SUBSYS_CTNETLINK << 8;
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type = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK, type);
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nlh = nlmsg_put(skb, item->portid, 0, type, sizeof(*nfmsg), flags);
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nlh = nlmsg_put(skb, item->portid, 0, type, sizeof(*nfmsg), flags);
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if (nlh == NULL)
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if (nlh == NULL)
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goto nlmsg_failure;
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goto nlmsg_failure;
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@ -1983,7 +1983,8 @@ ctnetlink_ct_stat_cpu_fill_info(struct sk_buff *skb, u32 portid, u32 seq,
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struct nfgenmsg *nfmsg;
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struct nfgenmsg *nfmsg;
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unsigned int flags = portid ? NLM_F_MULTI : 0, event;
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unsigned int flags = portid ? NLM_F_MULTI : 0, event;
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event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_CT_GET_STATS_CPU);
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event = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK,
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IPCTNL_MSG_CT_GET_STATS_CPU);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
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if (nlh == NULL)
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if (nlh == NULL)
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goto nlmsg_failure;
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goto nlmsg_failure;
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@ -2066,7 +2067,7 @@ ctnetlink_stat_ct_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type,
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unsigned int flags = portid ? NLM_F_MULTI : 0, event;
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unsigned int flags = portid ? NLM_F_MULTI : 0, event;
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unsigned int nr_conntracks = atomic_read(&net->ct.count);
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unsigned int nr_conntracks = atomic_read(&net->ct.count);
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event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_CT_GET_STATS);
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event = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK, IPCTNL_MSG_CT_GET_STATS);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
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if (nlh == NULL)
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if (nlh == NULL)
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goto nlmsg_failure;
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goto nlmsg_failure;
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@ -2576,7 +2577,7 @@ ctnetlink_exp_fill_info(struct sk_buff *skb, u32 portid, u32 seq,
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struct nfgenmsg *nfmsg;
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struct nfgenmsg *nfmsg;
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unsigned int flags = portid ? NLM_F_MULTI : 0;
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unsigned int flags = portid ? NLM_F_MULTI : 0;
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event |= NFNL_SUBSYS_CTNETLINK_EXP << 8;
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event = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK_EXP, event);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
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if (nlh == NULL)
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if (nlh == NULL)
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goto nlmsg_failure;
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goto nlmsg_failure;
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@ -2627,7 +2628,7 @@ ctnetlink_expect_event(unsigned int events, struct nf_exp_event *item)
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if (skb == NULL)
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if (skb == NULL)
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goto errout;
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goto errout;
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type |= NFNL_SUBSYS_CTNETLINK_EXP << 8;
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type = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK_EXP, type);
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nlh = nlmsg_put(skb, item->portid, 0, type, sizeof(*nfmsg), flags);
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nlh = nlmsg_put(skb, item->portid, 0, type, sizeof(*nfmsg), flags);
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if (nlh == NULL)
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if (nlh == NULL)
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goto nlmsg_failure;
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goto nlmsg_failure;
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@ -3212,7 +3213,8 @@ ctnetlink_exp_stat_fill_info(struct sk_buff *skb, u32 portid, u32 seq, int cpu,
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struct nfgenmsg *nfmsg;
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struct nfgenmsg *nfmsg;
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unsigned int flags = portid ? NLM_F_MULTI : 0, event;
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unsigned int flags = portid ? NLM_F_MULTI : 0, event;
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event = (NFNL_SUBSYS_CTNETLINK << 8 | IPCTNL_MSG_EXP_GET_STATS_CPU);
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event = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK,
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IPCTNL_MSG_EXP_GET_STATS_CPU);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
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if (nlh == NULL)
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if (nlh == NULL)
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goto nlmsg_failure;
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goto nlmsg_failure;
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@ -438,7 +438,7 @@ static int nf_tables_fill_table_info(struct sk_buff *skb, struct net *net,
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struct nlmsghdr *nlh;
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struct nlmsghdr *nlh;
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struct nfgenmsg *nfmsg;
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struct nfgenmsg *nfmsg;
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event |= NFNL_SUBSYS_NFTABLES << 8;
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event = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, event);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg), flags);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg), flags);
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if (nlh == NULL)
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if (nlh == NULL)
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goto nla_put_failure;
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goto nla_put_failure;
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@ -989,7 +989,7 @@ static int nf_tables_fill_chain_info(struct sk_buff *skb, struct net *net,
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struct nlmsghdr *nlh;
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struct nlmsghdr *nlh;
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struct nfgenmsg *nfmsg;
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struct nfgenmsg *nfmsg;
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event |= NFNL_SUBSYS_NFTABLES << 8;
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event = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, event);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg), flags);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg), flags);
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if (nlh == NULL)
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if (nlh == NULL)
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goto nla_put_failure;
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goto nla_put_failure;
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@ -1885,10 +1885,9 @@ static int nf_tables_fill_rule_info(struct sk_buff *skb, struct net *net,
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const struct nft_expr *expr, *next;
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const struct nft_expr *expr, *next;
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struct nlattr *list;
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struct nlattr *list;
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const struct nft_rule *prule;
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const struct nft_rule *prule;
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int type = event | NFNL_SUBSYS_NFTABLES << 8;
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u16 type = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, event);
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nlh = nlmsg_put(skb, portid, seq, type, sizeof(struct nfgenmsg),
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nlh = nlmsg_put(skb, portid, seq, type, sizeof(struct nfgenmsg), flags);
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flags);
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if (nlh == NULL)
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if (nlh == NULL)
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goto nla_put_failure;
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goto nla_put_failure;
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@ -2645,7 +2644,7 @@ static int nf_tables_fill_set(struct sk_buff *skb, const struct nft_ctx *ctx,
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u32 portid = ctx->portid;
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u32 portid = ctx->portid;
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u32 seq = ctx->seq;
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u32 seq = ctx->seq;
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event |= NFNL_SUBSYS_NFTABLES << 8;
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event = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, event);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg),
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg),
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flags);
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flags);
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if (nlh == NULL)
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if (nlh == NULL)
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@ -3395,8 +3394,7 @@ static int nf_tables_dump_set(struct sk_buff *skb, struct netlink_callback *cb)
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if (IS_ERR(set))
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if (IS_ERR(set))
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return PTR_ERR(set);
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return PTR_ERR(set);
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event = NFT_MSG_NEWSETELEM;
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event = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, NFT_MSG_NEWSETELEM);
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event |= NFNL_SUBSYS_NFTABLES << 8;
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portid = NETLINK_CB(cb->skb).portid;
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portid = NETLINK_CB(cb->skb).portid;
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seq = cb->nlh->nlmsg_seq;
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seq = cb->nlh->nlmsg_seq;
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@ -3481,7 +3479,7 @@ static int nf_tables_fill_setelem_info(struct sk_buff *skb,
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struct nlattr *nest;
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struct nlattr *nest;
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int err;
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int err;
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event |= NFNL_SUBSYS_NFTABLES << 8;
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event = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, event);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg),
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg),
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flags);
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flags);
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if (nlh == NULL)
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if (nlh == NULL)
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@ -4253,7 +4251,7 @@ static int nf_tables_fill_obj_info(struct sk_buff *skb, struct net *net,
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struct nfgenmsg *nfmsg;
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struct nfgenmsg *nfmsg;
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struct nlmsghdr *nlh;
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struct nlmsghdr *nlh;
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event |= NFNL_SUBSYS_NFTABLES << 8;
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event = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, event);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg), flags);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg), flags);
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if (nlh == NULL)
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if (nlh == NULL)
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goto nla_put_failure;
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goto nla_put_failure;
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@ -4526,7 +4524,7 @@ static int nf_tables_fill_gen_info(struct sk_buff *skb, struct net *net,
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{
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{
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struct nlmsghdr *nlh;
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struct nlmsghdr *nlh;
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struct nfgenmsg *nfmsg;
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struct nfgenmsg *nfmsg;
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int event = (NFNL_SUBSYS_NFTABLES << 8) | NFT_MSG_NEWGEN;
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int event = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, NFT_MSG_NEWGEN);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg), 0);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg), 0);
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if (nlh == NULL)
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if (nlh == NULL)
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@ -169,7 +169,7 @@ void nft_trace_notify(struct nft_traceinfo *info)
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struct nlmsghdr *nlh;
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struct nlmsghdr *nlh;
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struct sk_buff *skb;
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struct sk_buff *skb;
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unsigned int size;
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unsigned int size;
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int event = (NFNL_SUBSYS_NFTABLES << 8) | NFT_MSG_TRACE;
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u16 event;
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if (!nfnetlink_has_listeners(nft_net(pkt), NFNLGRP_NFTRACE))
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if (!nfnetlink_has_listeners(nft_net(pkt), NFNLGRP_NFTRACE))
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return;
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return;
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@ -198,6 +198,7 @@ void nft_trace_notify(struct nft_traceinfo *info)
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if (!skb)
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if (!skb)
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return;
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return;
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event = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, NFT_MSG_TRACE);
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nlh = nlmsg_put(skb, 0, 0, event, sizeof(struct nfgenmsg), 0);
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nlh = nlmsg_put(skb, 0, 0, event, sizeof(struct nfgenmsg), 0);
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if (!nlh)
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if (!nlh)
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goto nla_put_failure;
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goto nla_put_failure;
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@ -139,7 +139,7 @@ nfnl_acct_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type,
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u64 pkts, bytes;
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u64 pkts, bytes;
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u32 old_flags;
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u32 old_flags;
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event |= NFNL_SUBSYS_ACCT << 8;
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event = nfnl_msg_type(NFNL_SUBSYS_ACCT, event);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
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if (nlh == NULL)
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if (nlh == NULL)
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goto nlmsg_failure;
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goto nlmsg_failure;
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@ -507,7 +507,7 @@ nfnl_cthelper_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type,
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unsigned int flags = portid ? NLM_F_MULTI : 0;
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unsigned int flags = portid ? NLM_F_MULTI : 0;
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int status;
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int status;
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event |= NFNL_SUBSYS_CTHELPER << 8;
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event = nfnl_msg_type(NFNL_SUBSYS_CTHELPER, event);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
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if (nlh == NULL)
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if (nlh == NULL)
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goto nlmsg_failure;
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goto nlmsg_failure;
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@ -158,7 +158,7 @@ ctnl_timeout_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type,
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unsigned int flags = portid ? NLM_F_MULTI : 0;
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unsigned int flags = portid ? NLM_F_MULTI : 0;
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struct nf_conntrack_l4proto *l4proto = timeout->l4proto;
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struct nf_conntrack_l4proto *l4proto = timeout->l4proto;
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event |= NFNL_SUBSYS_CTNETLINK_TIMEOUT << 8;
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event = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK_TIMEOUT, event);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
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if (nlh == NULL)
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if (nlh == NULL)
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goto nlmsg_failure;
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goto nlmsg_failure;
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@ -431,7 +431,7 @@ cttimeout_default_fill_info(struct net *net, struct sk_buff *skb, u32 portid,
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struct nfgenmsg *nfmsg;
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struct nfgenmsg *nfmsg;
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unsigned int flags = portid ? NLM_F_MULTI : 0;
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unsigned int flags = portid ? NLM_F_MULTI : 0;
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event |= NFNL_SUBSYS_CTNETLINK_TIMEOUT << 8;
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event = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK_TIMEOUT, event);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
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nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
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if (nlh == NULL)
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if (nlh == NULL)
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goto nlmsg_failure;
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goto nlmsg_failure;
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@ -411,7 +411,7 @@ __build_packet_message(struct nfnl_log_net *log,
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const unsigned char *hwhdrp;
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const unsigned char *hwhdrp;
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nlh = nlmsg_put(inst->skb, 0, 0,
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nlh = nlmsg_put(inst->skb, 0, 0,
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NFNL_SUBSYS_ULOG << 8 | NFULNL_MSG_PACKET,
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nfnl_msg_type(NFNL_SUBSYS_ULOG, NFULNL_MSG_PACKET),
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sizeof(struct nfgenmsg), 0);
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sizeof(struct nfgenmsg), 0);
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if (!nlh)
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if (!nlh)
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return -1;
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return -1;
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@ -447,7 +447,7 @@ nfqnl_build_packet_message(struct net *net, struct nfqnl_instance *queue,
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}
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}
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nlh = nlmsg_put(skb, 0, 0,
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nlh = nlmsg_put(skb, 0, 0,
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NFNL_SUBSYS_QUEUE << 8 | NFQNL_MSG_PACKET,
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nfnl_msg_type(NFNL_SUBSYS_QUEUE, NFQNL_MSG_PACKET),
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sizeof(struct nfgenmsg), 0);
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sizeof(struct nfgenmsg), 0);
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if (!nlh) {
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if (!nlh) {
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skb_tx_error(entskb);
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skb_tx_error(entskb);
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@ -504,7 +504,7 @@ nfnl_compat_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type,
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struct nfgenmsg *nfmsg;
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struct nfgenmsg *nfmsg;
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unsigned int flags = portid ? NLM_F_MULTI : 0;
|
unsigned int flags = portid ? NLM_F_MULTI : 0;
|
||||||
|
|
||||||
event |= NFNL_SUBSYS_NFT_COMPAT << 8;
|
event = nfnl_msg_type(NFNL_SUBSYS_NFT_COMPAT, event);
|
||||||
nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
|
nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
|
||||||
if (nlh == NULL)
|
if (nlh == NULL)
|
||||||
goto nlmsg_failure;
|
goto nlmsg_failure;
|
||||||
|
|
Loading…
Reference in New Issue