git: 972fcfb34b0d - stable/13 - [fib algo] Update fib_gen counter under FIB_MOD_LOCK.

[Alexander V. Chernikov]

The branch stable/13 has been updated by melifaro:

URL: https://cgit.FreeBSD.org/src/commit/?id=972fcfb34b0d84dc1d869c351da8e19c702a3c35

commit 972fcfb34b0d84dc1d869c351da8e19c702a3c35
Author:     Alexander V. Chernikov <melifaro at FreeBSD.org>
AuthorDate: 2021-04-28 20:21:58 +0000
Commit:     Alexander V. Chernikov <melifaro at FreeBSD.org>
CommitDate: 2021-05-04 21:31:36 +0000

    [fib algo] Update fib_gen counter under FIB_MOD_LOCK.
    
    MFC after:      3 days
    
    (cherry picked from commit 41ce0e34ea42a4f7113d1ba15d25b9b64d5921b8)
---
 sys/net/route/fib_algo.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sys/net/route/fib_algo.c b/sys/net/route/fib_algo.c
index 837ea7c2b43b..3a09408c92b1 100644
--- a/sys/net/route/fib_algo.c
+++ b/sys/net/route/fib_algo.c
@@ -1169,19 +1169,19 @@ try_setup_fd_instance(struct fib_lookup_module *flm, struct rib_head *rh,
 	estimate_nhop_scale(old_fd, fd);
 
 	fd->fd_rh = rh;
-	fd->fd_gen = ++fib_gen;
 	fd->fd_family = rh->rib_family;
 	fd->fd_fibnum = rh->rib_fibnum;
 	callout_init_rm(&fd->fd_callout, &rh->rib_lock, 0);
 	fd->fd_vnet = curvnet;
 	fd->fd_flm = flm;
 
-	FD_PRINTF(LOG_DEBUG, fd, "allocated fd %p", fd);
-
 	FIB_MOD_LOCK();
 	flm->flm_refcount++;
+	fd->fd_gen = ++fib_gen;
 	FIB_MOD_UNLOCK();
 
+	FD_PRINTF(LOG_DEBUG, fd, "allocated fd %p", fd);
+
 	/* Allocate nhidx -> nhop_ptr table */
 	size = fd->number_nhops * sizeof(void *);
 	fd->nh_idx = malloc(size, M_RTABLE, M_NOWAIT | M_ZERO);