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rtnetlink: pass netlink message header and portid to rtnl_configure_link()

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This patch pass netlink message header and portid to rtnl_configure_link()
All the functions in this call chain need to add the parameters so we can
use them in the last call rtnl_notify(), and notify the userspace about
the new link info if NLM_F_ECHO flag is set.

- rtnl_configure_link()
  - __dev_notify_flags()
    - rtmsg_ifinfo()
      - rtmsg_ifinfo_event()
        - rtmsg_ifinfo_build_skb()
        - rtmsg_ifinfo_send()
	  - rtnl_notify()

Also move __dev_notify_flags() declaration to net/core/dev.h, as Jakub
suggested.

Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Hangbin Liu
2022-10-28 04:42:21 -04:00
committed by Jakub Kicinski
parent 37fe9b9816
commit 1d997f1013
13 changed files with 61 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
include/linux/rtnetlink.h
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@@ -12,21 +12,22 @@
extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo);
extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid);
extern void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid,
u32 group, struct nlmsghdr *nlh, gfp_t flags);
u32 group, const struct nlmsghdr *nlh, gfp_t flags);
extern void rtnl_set_sk_err(struct net *net, u32 group, int error);
extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst,
u32 id, long expires, u32 error);
void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change, gfp_t flags);
void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change, gfp_t flags,
u32 portid, const struct nlmsghdr *nlh);
void rtmsg_ifinfo_newnet(int type, struct net_device *dev, unsigned int change,
gfp_t flags, int *new_nsid, int new_ifindex);
struct sk_buff *rtmsg_ifinfo_build_skb(int type, struct net_device *dev,
unsigned change, u32 event,
gfp_t flags, int *new_nsid,
int new_ifindex);
int new_ifindex, u32 portid, u32 seq);
void rtmsg_ifinfo_send(struct sk_buff *skb, struct net_device *dev,
gfp_t flags);
gfp_t flags, u32 portid, const struct nlmsghdr *nlh);
/* RTNL is used as a global lock for all changes to network configuration */