ipv4: fib_rules: Make the need for fib_unmerge() explicit.

IPv4 local and main route tables are merged by default to avoid
unnecessary rule lookups.

When the first IPv4 rule is created, fib_unmerge() splits the
two tables.

However, fib4_rule_configure() currently always calls fib_unmerge(),
and even fetching a table via fib_get_table() requires RTNL (or RCU).

We will drop RTNL from fib_newrule() if not needed.

Let's call fib_unmerge() only once for the first rule.

Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260629181226.1929658-3-kuniyu@google.com
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

0 files changed, 0 insertions, 0 deletions