git: 70510800d1ad - main - mlx5: Enter network epoch when using if_foreach()

[Justin Hibbits]

The branch main has been updated by jhibbits:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=70510800d1ada1a92dc22bc74e57e9bb4fbaccc3

commit 70510800d1ada1a92dc22bc74e57e9bb4fbaccc3
Author:     Justin Hibbits <jhibb...@freebsd.org>
AuthorDate: 2023-02-21 19:43:53 +0000
Commit:     Justin Hibbits <jhibb...@freebsd.org>
CommitDate: 2023-03-06 16:04:15 +0000

    mlx5: Enter network epoch when using if_foreach()
    
    Summary: IFNET_RLOCK() is not sufficient, the epoch needs entered.
    
    Reviewed by:    hselasky
    Sponsored by:   Juniper Networks, Inc.
    Differential Revision: https://reviews.freebsd.org/D38711
---
 sys/dev/mlx5/mlx5_ib/mlx5_ib_main.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sys/dev/mlx5/mlx5_ib/mlx5_ib_main.c 
b/sys/dev/mlx5/mlx5_ib/mlx5_ib_main.c
index 629ecf3e5755..0b0a4b2019a0 100644
--- a/sys/dev/mlx5/mlx5_ib/mlx5_ib_main.c
+++ b/sys/dev/mlx5/mlx5_ib/mlx5_ib_main.c
@@ -3150,18 +3150,19 @@ mlx5_enable_roce_if_cb(if_t ifp, void *arg)
 
 static int mlx5_enable_roce(struct mlx5_ib_dev *dev)
 {
+       struct epoch_tracker et;
        VNET_ITERATOR_DECL(vnet_iter);
        int err;
 
        /* Check if mlx5en net device already exists */
        VNET_LIST_RLOCK();
+       NET_EPOCH_ENTER(et);
        VNET_FOREACH(vnet_iter) {
-               IFNET_RLOCK();
                CURVNET_SET_QUIET(vnet_iter);
                if_foreach(mlx5_enable_roce_if_cb, dev);
                CURVNET_RESTORE();
-               IFNET_RUNLOCK();
        }
+       NET_EPOCH_EXIT(et);
        VNET_LIST_RUNLOCK();
 
        dev->roce.nb.notifier_call = mlx5_netdev_event;