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| author | Yuyang Huang <sigefriedhyy@gmail.com> | 2026-08-08 09:56:38 +0900 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2026-08-13 12:30:27 +0200 |
| commit | 09f19ce3de67deb859cd95315d55a69a6ca45b40 (patch) | |
| tree | fdd1d31480a70a82970db94838e5ceb820127b63 | |
| parent | 1e6a83af59141b9caabb86a9d7d069ab696101e2 (diff) | |
| download | linux-09f19ce3de67deb859cd95315d55a69a6ca45b40.tar.gz linux-09f19ce3de67deb859cd95315d55a69a6ca45b40.zip | |
ipv6: add inet6_rt_del_notify()
Move the body of inet6_rt_notify() to __inet6_rt_notify() and give it
the deletion reason. inet6_rt_notify() keeps its prototype, so the
route addition path does not change.
Add inet6_rt_del_notify() and call it from fib6_del_route().
RTA_DEL_REASON now reaches user space on RTM_DELROUTE for routes the
kernel deleted on its own.
Signed-off-by: Yuyang Huang <sigefriedhyy@gmail.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260808005642.26901-7-sigefriedhyy@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
| -rw-r--r-- | include/net/ip6_fib.h | 2 | ||||
| -rw-r--r-- | net/ipv6/ip6_fib.c | 2 | ||||
| -rw-r--r-- | net/ipv6/route.c | 20 |
3 files changed, 19 insertions, 5 deletions
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h index 0ba5d3c56543..232289b439c3 100644 --- a/include/net/ip6_fib.h +++ b/include/net/ip6_fib.h @@ -533,6 +533,8 @@ static inline void fib6_rt_update(struct net *net, struct fib6_info *rt, #endif void inet6_rt_notify(int event, struct fib6_info *rt, struct nl_info *info, unsigned int flags); +void inet6_rt_del_notify(struct fib6_info *rt, struct nl_info *info, + enum rt_del_reason del_reason); void fib6_age_exceptions(struct fib6_info *rt, struct fib6_gc_args *gc_args, unsigned long now); diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c index f8a9ec7fa616..3e382ba1573e 100644 --- a/net/ipv6/ip6_fib.c +++ b/net/ipv6/ip6_fib.c @@ -2057,7 +2057,7 @@ static void fib6_del_route(struct fib6_table *table, struct fib6_node *fn, call_fib6_entry_notifiers_replace(net, replace_rt); } if (!info->skip_notify) - inet6_rt_notify(RTM_DELROUTE, rt, info, 0); + inet6_rt_del_notify(rt, info, del_reason); fib6_info_release(rt); } diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 1c48332bd193..ae2f93a19dd9 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -6378,8 +6378,9 @@ errout: return err; } -void inet6_rt_notify(int event, struct fib6_info *rt, struct nl_info *info, - unsigned int nlm_flags) +static void __inet6_rt_notify(int event, struct fib6_info *rt, + struct nl_info *info, unsigned int nlm_flags, + enum rt_del_reason del_reason) { struct net *net = info->nl_net; struct sk_buff *skb; @@ -6398,8 +6399,7 @@ retry: goto errout; err = rt6_fill_node(net, skb, rt, NULL, NULL, NULL, 0, - event, info->portid, seq, nlm_flags, - RT_DEL_REASON_UNSPEC); + event, info->portid, seq, nlm_flags, del_reason); if (err < 0) { kfree_skb(skb); /* -EMSGSIZE implies needed space grew under us. */ @@ -6420,6 +6420,18 @@ errout: rtnl_set_sk_err(net, RTNLGRP_IPV6_ROUTE, err); } +void inet6_rt_notify(int event, struct fib6_info *rt, struct nl_info *info, + unsigned int nlm_flags) +{ + __inet6_rt_notify(event, rt, info, nlm_flags, RT_DEL_REASON_UNSPEC); +} + +void inet6_rt_del_notify(struct fib6_info *rt, struct nl_info *info, + enum rt_del_reason del_reason) +{ + __inet6_rt_notify(RTM_DELROUTE, rt, info, 0, del_reason); +} + void fib6_rt_update(struct net *net, struct fib6_info *rt, struct nl_info *info) { |