diff options
| -rw-r--r-- | sys/netpfil/pf/pf_norm.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/sys/netpfil/pf/pf_norm.c b/sys/netpfil/pf/pf_norm.c index b7a84437630b..d7310c7bccb4 100644 --- a/sys/netpfil/pf/pf_norm.c +++ b/sys/netpfil/pf/pf_norm.c @@ -549,6 +549,7 @@ pf_fillup_fragment(struct pf_fragment_cmp *key, struct pf_frent *frent, struct pf_frent *after, *next, *prev; struct pf_fragment *frag; uint16_t total; + int old_index, new_index; PF_FRAG_ASSERT(); @@ -660,8 +661,30 @@ pf_fillup_fragment(struct pf_fragment_cmp *key, struct pf_frent *frent, DPFPRINTF(("adjust overlap %d\n", aftercut)); if (aftercut < after->fe_len) { m_adj(after->fe_m, aftercut); + old_index = pf_frent_index(after); after->fe_off += aftercut; after->fe_len -= aftercut; + new_index = pf_frent_index(after); + if (old_index != new_index) { + DPFPRINTF(("frag index %d, new %d", + old_index, new_index)); + /* Fragment switched queue as fe_off changed */ + after->fe_off -= aftercut; + after->fe_len += aftercut; + /* Remove restored fragment from old queue */ + pf_frent_remove(frag, after); + after->fe_off += aftercut; + after->fe_len -= aftercut; + /* Insert into correct queue */ + if (pf_frent_insert(frag, after, prev)) { + DPFPRINTF( + ("fragment requeue limit exceeded")); + m_freem(after->fe_m); + uma_zfree(V_pf_frent_z, after); + /* There is not way to recover */ + goto bad_fragment; + } + } break; } |