Author: markj Date: Wed Dec 2 16:01:43 2020 New Revision: 368276 URL: https://svnweb.freebsd.org/changeset/base/368276
Log: pf: Fix table entry counter toggling When updating a table, pf will keep existing table entry structures corresponding to addresses that are in both of the old and new tables. However, the update may also enable or disable per-entry counters which are allocated separately. Thus when toggling PFR_TFLAG_COUNTERS, the entries may be missing counters or may have unused counters allocated. Fix the problem by modifying pfr_ina_commit() to transfer counters from or to entries in the shadow table. PR: 251414 Reported by: sig...@gmail.com Reviewed by: kp MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D27440 Modified: head/sys/netpfil/pf/pf_table.c Modified: head/sys/netpfil/pf/pf_table.c ============================================================================== --- head/sys/netpfil/pf/pf_table.c Wed Dec 2 15:59:08 2020 (r368275) +++ head/sys/netpfil/pf/pf_table.c Wed Dec 2 16:01:43 2020 (r368276) @@ -1641,6 +1641,7 @@ pfr_ina_commit(struct pfr_table *trs, u_int32_t ticket static void pfr_commit_ktable(struct pfr_ktable *kt, long tzero) { + counter_u64_t *pkc, *qkc; struct pfr_ktable *shadow = kt->pfrkt_shadow; int nflags; @@ -1662,14 +1663,17 @@ pfr_commit_ktable(struct pfr_ktable *kt, long tzero) SLIST_INIT(&delq); SLIST_INIT(&garbageq); pfr_clean_node_mask(shadow, &addrq); - for (p = SLIST_FIRST(&addrq); p != NULL; p = next) { - next = SLIST_NEXT(p, pfrke_workq); /* XXX */ + SLIST_FOREACH_SAFE(p, &addrq, pfrke_workq, next) { pfr_copyout_addr(&ad, p); q = pfr_lookup_addr(kt, &ad, 1); if (q != NULL) { if (q->pfrke_not != p->pfrke_not) SLIST_INSERT_HEAD(&changeq, q, pfrke_workq); + pkc = &p->pfrke_counters.pfrkc_counters; + qkc = &q->pfrke_counters.pfrkc_counters; + if ((*pkc == NULL) != (*qkc == NULL)) + SWAP(counter_u64_t, *pkc, *qkc); q->pfrke_mark = 1; SLIST_INSERT_HEAD(&garbageq, p, pfrke_workq); } else { _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
