diff options
| -rw-r--r-- | sys/netinet/if_ether.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/sys/netinet/if_ether.c b/sys/netinet/if_ether.c index 9d1c13a..e118cec 100644 --- a/sys/netinet/if_ether.c +++ b/sys/netinet/if_ether.c @@ -462,11 +462,11 @@ in_arpinput(struct mbuf *m) struct rtentry *rt; struct ifaddr *ifa; struct in_ifaddr *ia; + struct mbuf *hold; struct sockaddr sa; struct in_addr isaddr, itaddr, myaddr; u_int8_t *enaddr = NULL; int op, flags; - struct mbuf *m0; int req_len; int bridged = 0, is_bridge = 0; #ifdef DEV_CARP @@ -631,11 +631,13 @@ match: la->lle_tbl->llt_ifp->if_xname, ifp->if_addrlen, (u_char *)ar_sha(ah), ":", ifp->if_xname); + LLE_WUNLOCK(la); goto reply; } if ((la->la_flags & LLE_VALID) && bcmp(ar_sha(ah), &la->ll_addr, ifp->if_addrlen)) { if (la->la_flags & LLE_STATIC) { + LLE_WUNLOCK(la); log(LOG_ERR, "arp: %*D attempts to modify permanent " "entry for %s on %s\n", @@ -655,6 +657,7 @@ match: } if (ifp->if_addrlen != ah->ar_hln) { + LLE_WUNLOCK(la); log(LOG_WARNING, "arp from %*D: addr len: new %d, i/f %d (ignored)", ifp->if_addrlen, (u_char *) ar_sha(ah), ":", @@ -671,15 +674,14 @@ match: } la->la_asked = 0; la->la_preempt = V_arp_maxtries; - if (la->la_hold != NULL) { - m0 = la->la_hold; - la->la_hold = 0; + hold = la->la_hold; + if (hold != NULL) { + la->la_hold = NULL; memcpy(&sa, L3_ADDR(la), sizeof(sa)); - LLE_WUNLOCK(la); - - (*ifp->if_output)(ifp, m0, &sa, NULL); - return; } + LLE_WUNLOCK(la); + if (hold != NULL) + (*ifp->if_output)(ifp, hold, &sa, NULL); } reply: if (op != ARPOP_REQUEST) @@ -750,8 +752,6 @@ reply: #endif } - if (la != NULL) - LLE_WUNLOCK(la); if (itaddr.s_addr == myaddr.s_addr && IN_LINKLOCAL(ntohl(itaddr.s_addr))) { /* RFC 3927 link-local IPv4; always reply by broadcast. */ @@ -777,8 +777,6 @@ reply: return; drop: - if (la != NULL) - LLE_WUNLOCK(la); m_freem(m); } #endif |
