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| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2023-07-05 18:55:10 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-08-11 11:45:16 +0200 |
| commit | f2a0072f51d5136dd523494474eedb791d543375 (patch) | |
| tree | 9211923efc939c667cea07ff35a0f66965f4506c /include/linux | |
| parent | 7c3287038cf378a7b056987cc6878ebf5459f302 (diff) | |
| download | linux-stable-f2a0072f51d5136dd523494474eedb791d543375.tar.gz linux-stable-f2a0072f51d5136dd523494474eedb791d543375.tar.bz2 linux-stable-f2a0072f51d5136dd523494474eedb791d543375.zip | |
netfilter: add helper function to set up the nfnetlink header and use it
[ 19c28b1374fb1073a9ec873a6c10bf5f16b10b9d ]
This patch adds a helper function to set up the netlink and nfnetlink headers.
Update existing codebase to use it.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/netfilter/nfnetlink.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/linux/netfilter/nfnetlink.h b/include/linux/netfilter/nfnetlink.h index a806803fbe37..de206e410ee2 100644 --- a/include/linux/netfilter/nfnetlink.h +++ b/include/linux/netfilter/nfnetlink.h @@ -49,6 +49,33 @@ static inline u16 nfnl_msg_type(u8 subsys, u8 msg_type) return subsys << 8 | msg_type; } +static inline void nfnl_fill_hdr(struct nlmsghdr *nlh, u8 family, u8 version, + __be16 res_id) +{ + struct nfgenmsg *nfmsg; + + nfmsg = nlmsg_data(nlh); + nfmsg->nfgen_family = family; + nfmsg->version = version; + nfmsg->res_id = res_id; +} + +static inline struct nlmsghdr *nfnl_msg_put(struct sk_buff *skb, u32 portid, + u32 seq, int type, int flags, + u8 family, u8 version, + __be16 res_id) +{ + struct nlmsghdr *nlh; + + nlh = nlmsg_put(skb, portid, seq, type, sizeof(struct nfgenmsg), flags); + if (!nlh) + return NULL; + + nfnl_fill_hdr(nlh, family, version, res_id); + + return nlh; +} + void nfnl_lock(__u8 subsys_id); void nfnl_unlock(__u8 subsys_id); #ifdef CONFIG_PROVE_LOCKING |