git: 15b3e3bb7efc - main - ctld: if adding a target fails, retry it on the next reload

The branch main has been updated by asomers:

URL: https://cgit.FreeBSD.org/src/commit/?id=15b3e3bb7efcbf7c29ab76e9ea7990c17df790e6

commit 15b3e3bb7efcbf7c29ab76e9ea7990c17df790e6
Author:     Alan Somers <asomers@FreeBSD.org>
AuthorDate: 2022-10-12 22:44:09 +0000
Commit:     Alan Somers <asomers@FreeBSD.org>
CommitDate: 2022-10-22 00:28:45 +0000

    ctld: if adding a target fails, retry it on the next reload
    
    If the admin creates more CTL ports than kern.cam.ctl.max_ports, then
    adding some will fail.  If he then removes some ports and does
    "service ctld reload", he would expect that the new ports would get
    added in the newly-freed port space. But they don't, because ctld
    assigned them port numbers during their first creation attempts.
    
    Fix this bug by removing newly created ports from ctld's internal list
    if the kernel rejects them for any reason.  That way, a subsequent
    config reload will attempt to add them again, possibly with new port
    numbers.
    
    MFC after:      2 weeks
    Sponsored by:   Axcient
    Reviewed by:    jhb, mav
    Differential Revision: https://reviews.freebsd.org/D36974
---
 usr.sbin/ctld/ctld.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/usr.sbin/ctld/ctld.c b/usr.sbin/ctld/ctld.c
index 3f4bca632512..7ee381de08a7 100644
--- a/usr.sbin/ctld/ctld.c
+++ b/usr.sbin/ctld/ctld.c
@@ -2113,7 +2113,7 @@ conf_apply(struct conf *oldconf, struct conf *newconf)
 	/*
 	 * Now add new ports or modify existing ones.
 	 */
-	TAILQ_FOREACH(newport, &newconf->conf_ports, p_next) {
+	TAILQ_FOREACH_SAFE(newport, &newconf->conf_ports, p_next, tmpport) {
 		if (port_is_dummy(newport))
 			continue;
 		oldport = port_find(oldconf, newport->p_name);
@@ -2130,6 +2130,8 @@ conf_apply(struct conf *oldconf, struct conf *newconf)
 			log_warnx("failed to %s port %s",
 			    (oldport == NULL) ? "add" : "update",
 			    newport->p_name);
+			if (oldport == NULL || port_is_dummy(oldport))
+				port_delete(newport);
 			/*
 			 * XXX: Uncomment after fixing the root cause.
 			 *