git: 4599a3c0b8e2 - stable/14 - cxgbe(4): Make sure suspend/resume works in recovery mode.

The branch stable/14 has been updated by np:

URL: https://cgit.FreeBSD.org/src/commit/?id=4599a3c0b8e2278e8400f0dc2ff54f02836b063f

commit 4599a3c0b8e2278e8400f0dc2ff54f02836b063f
Author:     Navdeep Parhar <np@FreeBSD.org>
AuthorDate: 2025-02-14 00:17:54 +0000
Commit:     Navdeep Parhar <np@FreeBSD.org>
CommitDate: 2025-04-22 11:12:45 +0000

    cxgbe(4): Make sure suspend/resume works in recovery mode.
    
    The driver does minimal initialization in this mode and suspend/resume
    should ignore resources that aren't setup.  This is for debug only.
    
    kenv hw.cxgbe.sos="1"
    kldload if_cxgbe
    devctl suspend t6nex0
    devctl resume t6nex0
    
    Sponsored by:   Chelsio Communications
    
    (cherry picked from commit f4ab14044c1de35b1aefad5449bddc5a1272f8d9)
---
 sys/dev/cxgbe/t4_l2t.c  | 4 ++++
 sys/dev/cxgbe/t4_main.c | 8 ++++++++
 2 files changed, 12 insertions(+)

diff --git a/sys/dev/cxgbe/t4_l2t.c b/sys/dev/cxgbe/t4_l2t.c
index b210003cfac0..b1307bf2ace5 100644
--- a/sys/dev/cxgbe/t4_l2t.c
+++ b/sys/dev/cxgbe/t4_l2t.c
@@ -376,6 +376,8 @@ t4_stop_l2t(struct adapter *sc)
 {
 	struct l2t_data *d = sc->l2t;
 
+	if (d == NULL)
+		return (0);
 	rw_wlock(&d->lock);
 	d->l2t_stopped = true;
 	rw_wunlock(&d->lock);
@@ -388,6 +390,8 @@ t4_restart_l2t(struct adapter *sc)
 {
 	struct l2t_data *d = sc->l2t;
 
+	if (d == NULL)
+		return (0);
 	rw_wlock(&d->lock);
 	d->l2t_stopped = false;
 	rw_wunlock(&d->lock);
diff --git a/sys/dev/cxgbe/t4_main.c b/sys/dev/cxgbe/t4_main.c
index 6b3a68b352ad..222f58d056ad 100644
--- a/sys/dev/cxgbe/t4_main.c
+++ b/sys/dev/cxgbe/t4_main.c
@@ -1935,6 +1935,8 @@ stop_adapter(struct adapter *sc)
 	t4_shutdown_adapter(sc);
 	for_each_port(sc, i) {
 		pi = sc->port[i];
+		if (pi == NULL)
+			continue;
 		PORT_LOCK(pi);
 		if (pi->up_vis > 0 && pi->link_cfg.link_ok) {
 			/*
@@ -2046,6 +2048,8 @@ stop_lld(struct adapter *sc)
 	/* Quiesce all activity. */
 	for_each_port(sc, i) {
 		pi = sc->port[i];
+		if (pi == NULL)
+			continue;
 		pi->vxlan_tcam_entry = false;
 		for_each_vi(pi, j, vi) {
 			vi->xact_addr_filt = -1;
@@ -4025,6 +4029,8 @@ stop_atid_allocator(struct adapter *sc)
 {
 	struct tid_info *t = &sc->tids;
 
+	if (t->natids == 0)
+		return;
 	mtx_lock(&t->atid_lock);
 	t->atid_alloc_stopped = true;
 	mtx_unlock(&t->atid_lock);
@@ -4035,6 +4041,8 @@ restart_atid_allocator(struct adapter *sc)
 {
 	struct tid_info *t = &sc->tids;
 
+	if (t->natids == 0)
+		return;
 	mtx_lock(&t->atid_lock);
 	KASSERT(t->atids_in_use == 0,
 	    ("%s: %d atids still in use.", __func__, t->atids_in_use));