From af5333e0a02b2295304d4e029b15ee15a4fe2b3a Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Mon, 4 Nov 2013 11:33:00 +0100 Subject: Update to FreeBSD 8.4 --- freebsd/sys/net/rtsock.c | 342 ++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 277 insertions(+), 65 deletions(-) (limited to 'freebsd/sys/net/rtsock.c') diff --git a/freebsd/sys/net/rtsock.c b/freebsd/sys/net/rtsock.c index bfdecf87..beca84da 100644 --- a/freebsd/sys/net/rtsock.c +++ b/freebsd/sys/net/rtsock.c @@ -116,7 +116,34 @@ struct if_msghdr32 { uint16_t ifm_index; struct if_data32 ifm_data; }; -#endif + +struct if_msghdrl32 { + uint16_t ifm_msglen; + uint8_t ifm_version; + uint8_t ifm_type; + int32_t ifm_addrs; + int32_t ifm_flags; + uint16_t ifm_index; + uint16_t _ifm_spare1; + uint16_t ifm_len; + uint16_t ifm_data_off; + struct if_data32 ifm_data; +}; + +struct ifa_msghdrl32 { + uint16_t ifam_msglen; + uint8_t ifam_version; + uint8_t ifam_type; + int32_t ifam_addrs; + int32_t ifam_flags; + uint16_t ifam_index; + uint16_t _ifam_spare1; + uint16_t ifam_len; + uint16_t ifam_data_off; + int32_t ifam_metric; + struct if_data32 ifam_data; +}; +#endif /* COMPAT_FREEBSD32 */ MALLOC_DEFINE(M_RTABLE, "routetbl", "routing tables"); @@ -124,6 +151,13 @@ MALLOC_DEFINE(M_RTABLE, "routetbl", "routing tables"); static struct sockaddr route_src = { 2, PF_ROUTE, }; static struct sockaddr sa_zero = { sizeof(sa_zero), AF_INET, }; +/* + * Used by rtsock/raw_input callback code to decide whether to filter the update + * notification to a socket bound to a particular FIB. + */ +#define RTS_FILTER_FIB M_PROTO8 +#define RTS_ALLFIBS -1 + static struct { int ip_count; /* attached w/ AF_INET */ int ip6_count; /* attached w/ AF_INET6 */ @@ -161,7 +195,7 @@ static void rt_setmetrics(u_long which, const struct rt_metrics *in, struct rt_metrics_lite *out); static void rt_getmetrics(const struct rt_metrics_lite *in, struct rt_metrics *out); -static void rt_dispatch(struct mbuf *, const struct sockaddr *); +static void rt_dispatch(struct mbuf *, sa_family_t); static struct netisr_handler rtsock_nh = { .nh_name = "rtsock", @@ -200,6 +234,31 @@ rts_init(void) } SYSINIT(rtsock, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, rts_init, 0); +static int +raw_input_rts_cb(struct mbuf *m, struct sockproto *proto, struct sockaddr *src, + struct rawcb *rp) +{ + int fibnum; + + KASSERT(m != NULL, ("%s: m is NULL", __func__)); + KASSERT(proto != NULL, ("%s: proto is NULL", __func__)); + KASSERT(rp != NULL, ("%s: rp is NULL", __func__)); + + /* No filtering requested. */ + if ((m->m_flags & RTS_FILTER_FIB) == 0) + return (0); + + /* Check if it is a rts and the fib matches the one of the socket. */ + fibnum = M_GETFIB(m); + if (proto->sp_family != PF_ROUTE || + rp->rcb_socket == NULL || + rp->rcb_socket->so_fibnum == fibnum) + return (0); + + /* Filtering requested and no match, the socket shall be skipped. */ + return (1); +} + static void rts_input(struct mbuf *m) { @@ -216,7 +275,7 @@ rts_input(struct mbuf *m) } else route_proto.sp_protocol = 0; - raw_input(m, &route_proto, &route_src); + raw_input_ext(m, &route_proto, &route_src, raw_input_rts_cb); } /* @@ -428,7 +487,7 @@ rtm_get_jailed(struct rt_addrinfo *info, struct ifnet *ifp, * Try to find an address on the given outgoing interface * that belongs to the jail. */ - IF_ADDR_LOCK(ifp); + IF_ADDR_RLOCK(ifp); TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { struct sockaddr *sa; sa = ifa->ifa_addr; @@ -440,7 +499,7 @@ rtm_get_jailed(struct rt_addrinfo *info, struct ifnet *ifp, break; } } - IF_ADDR_UNLOCK(ifp); + IF_ADDR_RUNLOCK(ifp); if (!found) { /* * As a last resort return the 'default' jail address. @@ -470,7 +529,7 @@ rtm_get_jailed(struct rt_addrinfo *info, struct ifnet *ifp, * Try to find an address on the given outgoing interface * that belongs to the jail. */ - IF_ADDR_LOCK(ifp); + IF_ADDR_RLOCK(ifp); TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { struct sockaddr *sa; sa = ifa->ifa_addr; @@ -483,7 +542,7 @@ rtm_get_jailed(struct rt_addrinfo *info, struct ifnet *ifp, break; } } - IF_ADDR_UNLOCK(ifp); + IF_ADDR_RUNLOCK(ifp); if (!found) { /* * As a last resort return the 'default' jail address. @@ -521,6 +580,7 @@ route_output(struct mbuf *m, struct socket *so) int len, error = 0; struct ifnet *ifp = NULL; union sockaddr_union saun; + sa_family_t saf = AF_UNSPEC; #define senderr(e) { error = e; goto flush;} if (m == NULL || ((m->m_len < sizeof(long)) && @@ -561,6 +621,7 @@ route_output(struct mbuf *m, struct socket *so) (info.rti_info[RTAX_GATEWAY] != NULL && info.rti_info[RTAX_GATEWAY]->sa_family >= AF_MAX)) senderr(EINVAL); + saf = info.rti_info[RTAX_DST]->sa_family; /* * Verify that the caller has the appropriate privilege; RTM_GET * is the only operation the non-superuser is allowed. @@ -898,6 +959,8 @@ flush: Free(rtm); } if (m) { + M_SETFIB(m, so->so_fibnum); + m->m_flags |= RTS_FILTER_FIB; if (rp) { /* * XXX insure we don't get a copy by @@ -905,10 +968,10 @@ flush: */ unsigned short family = rp->rcb_proto.sp_family; rp->rcb_proto.sp_family = 0; - rt_dispatch(m, info.rti_info[RTAX_DST]); + rt_dispatch(m, saf); rp->rcb_proto.sp_family = family; } else - rt_dispatch(m, info.rti_info[RTAX_DST]); + rt_dispatch(m, saf); } } return (error); @@ -984,6 +1047,9 @@ rt_xaddrs(caddr_t cp, caddr_t cplim, struct rt_addrinfo *rtinfo) return (0); } +/* + * Used by the routing socket. + */ static struct mbuf * rt_msg1(int type, struct rt_addrinfo *rtinfo) { @@ -1051,6 +1117,9 @@ rt_msg1(int type, struct rt_addrinfo *rtinfo) return (m); } +/* + * Used by the sysctl code and routing socket. + */ static int rt_msg2(int type, struct rt_addrinfo *rtinfo, caddr_t cp, struct walkarg *w) { @@ -1064,17 +1133,31 @@ again: case RTM_DELADDR: case RTM_NEWADDR: - len = sizeof(struct ifa_msghdr); + if (w != NULL && w->w_op == NET_RT_IFLISTL) { +#ifdef COMPAT_FREEBSD32 + if (w->w_req->flags & SCTL_MASK32) + len = sizeof(struct ifa_msghdrl32); + else +#endif + len = sizeof(struct ifa_msghdrl); + } else + len = sizeof(struct ifa_msghdr); break; case RTM_IFINFO: #ifdef COMPAT_FREEBSD32 if (w != NULL && w->w_req->flags & SCTL_MASK32) { - len = sizeof(struct if_msghdr32); + if (w->w_op == NET_RT_IFLISTL) + len = sizeof(struct if_msghdrl32); + else + len = sizeof(struct if_msghdr32); break; } #endif - len = sizeof(struct if_msghdr); + if (w != NULL && w->w_op == NET_RT_IFLISTL) + len = sizeof(struct if_msghdrl); + else + len = sizeof(struct if_msghdr); break; case RTM_NEWMADDR: @@ -1137,7 +1220,8 @@ again: * destination. */ void -rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error) +rt_missmsg_fib(int type, struct rt_addrinfo *rtinfo, int flags, int error, + int fibnum) { struct rt_msghdr *rtm; struct mbuf *m; @@ -1148,11 +1232,26 @@ rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error) m = rt_msg1(type, rtinfo); if (m == NULL) return; + + if (fibnum != RTS_ALLFIBS) { + KASSERT(fibnum >= 0 && fibnum < rt_numfibs, ("%s: fibnum out " + "of range 0 <= %d < %d", __func__, fibnum, rt_numfibs)); + M_SETFIB(m, fibnum); + m->m_flags |= RTS_FILTER_FIB; + } + rtm = mtod(m, struct rt_msghdr *); rtm->rtm_flags = RTF_DONE | flags; rtm->rtm_errno = error; rtm->rtm_addrs = rtinfo->rti_addrs; - rt_dispatch(m, sa); + rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC); +} + +void +rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error) +{ + + rt_missmsg_fib(type, rtinfo, flags, error, RTS_ALLFIBS); } /* @@ -1177,7 +1276,7 @@ rt_ifmsg(struct ifnet *ifp) ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; ifm->ifm_data = ifp->if_data; ifm->ifm_addrs = 0; - rt_dispatch(m, NULL); + rt_dispatch(m, AF_UNSPEC); } /* @@ -1189,7 +1288,8 @@ rt_ifmsg(struct ifnet *ifp) * copies of it. */ void -rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt) +rt_newaddrmsg_fib(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt, + int fibnum) { struct rt_addrinfo info; struct sockaddr *sa = NULL; @@ -1247,10 +1347,24 @@ rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt) rtm->rtm_errno = error; rtm->rtm_addrs = info.rti_addrs; } - rt_dispatch(m, sa); + if (fibnum != RTS_ALLFIBS) { + KASSERT(fibnum >= 0 && fibnum < rt_numfibs, ("%s: " + "fibnum out of range 0 <= %d < %d", __func__, + fibnum, rt_numfibs)); + M_SETFIB(m, fibnum); + m->m_flags |= RTS_FILTER_FIB; + } + rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC); } } +void +rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt) +{ + + rt_newaddrmsg_fib(cmd, ifa, error, rt, RTS_ALLFIBS); +} + /* * This is the analogue to the rt_newaddrmsg which performs the same * function but for multicast group memberhips. This is easier since @@ -1283,7 +1397,7 @@ rt_newmaddrmsg(int cmd, struct ifmultiaddr *ifma) __func__)); ifmam->ifmam_index = ifp->if_index; ifmam->ifmam_addrs = info.rti_addrs; - rt_dispatch(m, ifma->ifma_addr); + rt_dispatch(m, ifma->ifma_addr ? ifma->ifma_addr->sa_family : AF_UNSPEC); } static struct mbuf * @@ -1343,7 +1457,7 @@ rt_ieee80211msg(struct ifnet *ifp, int what, void *data, size_t data_len) if (m->m_flags & M_PKTHDR) m->m_pkthdr.len += data_len; mtod(m, struct if_announcemsghdr *)->ifan_msglen += data_len; - rt_dispatch(m, NULL); + rt_dispatch(m, AF_UNSPEC); } } @@ -1359,11 +1473,11 @@ rt_ifannouncemsg(struct ifnet *ifp, int what) m = rt_makeifannouncemsg(ifp, RTM_IFANNOUNCE, what, &info); if (m != NULL) - rt_dispatch(m, NULL); + rt_dispatch(m, AF_UNSPEC); } static void -rt_dispatch(struct mbuf *m, const struct sockaddr *sa) +rt_dispatch(struct mbuf *m, sa_family_t saf) { struct m_tag *tag; @@ -1372,14 +1486,14 @@ rt_dispatch(struct mbuf *m, const struct sockaddr *sa) * use when injecting the mbuf into the routing socket buffer from * the netisr. */ - if (sa != NULL) { + if (saf != AF_UNSPEC) { tag = m_tag_get(PACKET_TAG_RTSOCKFAM, sizeof(unsigned short), M_NOWAIT); if (tag == NULL) { m_freem(m); return; } - *(unsigned short *)(tag + 1) = sa->sa_family; + *(unsigned short *)(tag + 1) = saf; m_tag_prepend(m, tag); } #ifdef VIMAGE @@ -1472,6 +1586,127 @@ copy_ifdata32(struct if_data *src, struct if_data32 *dst) } #endif +static int +sysctl_iflist_ifml(struct ifnet *ifp, struct rt_addrinfo *info, + struct walkarg *w, int len) +{ + struct if_msghdrl *ifm; + +#ifdef COMPAT_FREEBSD32 + if (w->w_req->flags & SCTL_MASK32) { + struct if_msghdrl32 *ifm32; + + ifm32 = (struct if_msghdrl32 *)w->w_tmem; + ifm32->ifm_addrs = info->rti_addrs; + ifm32->ifm_flags = ifp->if_flags | ifp->if_drv_flags; + ifm32->ifm_index = ifp->if_index; + ifm32->_ifm_spare1 = 0; + ifm32->ifm_len = sizeof(*ifm32); + ifm32->ifm_data_off = offsetof(struct if_msghdrl32, ifm_data); + + copy_ifdata32(&ifp->if_data, &ifm32->ifm_data); + + return (SYSCTL_OUT(w->w_req, (caddr_t)ifm32, len)); + } +#endif + ifm = (struct if_msghdrl *)w->w_tmem; + ifm->ifm_addrs = info->rti_addrs; + ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; + ifm->ifm_index = ifp->if_index; + ifm->_ifm_spare1 = 0; + ifm->ifm_len = sizeof(*ifm); + ifm->ifm_data_off = offsetof(struct if_msghdrl, ifm_data); + + ifm->ifm_data = ifp->if_data; + + return (SYSCTL_OUT(w->w_req, (caddr_t)ifm, len)); +} + +static int +sysctl_iflist_ifm(struct ifnet *ifp, struct rt_addrinfo *info, + struct walkarg *w, int len) +{ + struct if_msghdr *ifm; + +#ifdef COMPAT_FREEBSD32 + if (w->w_req->flags & SCTL_MASK32) { + struct if_msghdr32 *ifm32; + + ifm32 = (struct if_msghdr32 *)w->w_tmem; + ifm32->ifm_addrs = info->rti_addrs; + ifm32->ifm_flags = ifp->if_flags | ifp->if_drv_flags; + ifm32->ifm_index = ifp->if_index; + + copy_ifdata32(&ifp->if_data, &ifm32->ifm_data); + + return (SYSCTL_OUT(w->w_req, (caddr_t)ifm32, len)); + } +#endif + ifm = (struct if_msghdr *)w->w_tmem; + ifm->ifm_addrs = info->rti_addrs; + ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; + ifm->ifm_index = ifp->if_index; + + ifm->ifm_data = ifp->if_data; + + return (SYSCTL_OUT(w->w_req, (caddr_t)ifm, len)); +} + +static int +sysctl_iflist_ifaml(struct ifaddr *ifa, struct rt_addrinfo *info, + struct walkarg *w, int len) +{ + struct ifa_msghdrl *ifam; + +#ifdef COMPAT_FREEBSD32 + if (w->w_req->flags & SCTL_MASK32) { + struct ifa_msghdrl32 *ifam32; + + ifam32 = (struct ifa_msghdrl32 *)w->w_tmem; + ifam32->ifam_addrs = info->rti_addrs; + ifam32->ifam_flags = ifa->ifa_flags; + ifam32->ifam_index = ifa->ifa_ifp->if_index; + ifam32->_ifam_spare1 = 0; + ifam32->ifam_len = sizeof(*ifam32); + ifam32->ifam_data_off = + offsetof(struct ifa_msghdrl32, ifam_data); + ifam32->ifam_metric = ifa->ifa_metric; + + copy_ifdata32(&ifa->ifa_ifp->if_data, &ifam32->ifam_data); + + return (SYSCTL_OUT(w->w_req, (caddr_t)ifam32, len)); + } +#endif + + ifam = (struct ifa_msghdrl *)w->w_tmem; + ifam->ifam_addrs = info->rti_addrs; + ifam->ifam_flags = ifa->ifa_flags; + ifam->ifam_index = ifa->ifa_ifp->if_index; + ifam->_ifam_spare1 = 0; + ifam->ifam_len = sizeof(*ifam); + ifam->ifam_data_off = offsetof(struct ifa_msghdrl, ifam_data); + ifam->ifam_metric = ifa->ifa_metric; + + ifam->ifam_data = ifa->if_data; + + return (SYSCTL_OUT(w->w_req, w->w_tmem, len)); +} + +static int +sysctl_iflist_ifam(struct ifaddr *ifa, struct rt_addrinfo *info, + struct walkarg *w, int len) +{ + struct ifa_msghdr *ifam; + + ifam = (struct ifa_msghdr *)w->w_tmem; + ifam->ifam_addrs = info->rti_addrs; + ifam->ifam_flags = ifa->ifa_flags; + ifam->ifam_index = ifa->ifa_ifp->if_index; + ifam->ifam_metric = ifa->ifa_metric; + + return (SYSCTL_OUT(w->w_req, w->w_tmem, len)); +} + static int sysctl_iflist(int af, struct walkarg *w) { @@ -1485,38 +1720,16 @@ sysctl_iflist(int af, struct walkarg *w) TAILQ_FOREACH(ifp, &V_ifnet, if_link) { if (w->w_arg && w->w_arg != ifp->if_index) continue; - IF_ADDR_LOCK(ifp); + IF_ADDR_RLOCK(ifp); ifa = ifp->if_addr; info.rti_info[RTAX_IFP] = ifa->ifa_addr; len = rt_msg2(RTM_IFINFO, &info, NULL, w); info.rti_info[RTAX_IFP] = NULL; if (w->w_req && w->w_tmem) { - struct if_msghdr *ifm; - -#ifdef COMPAT_FREEBSD32 - if (w->w_req->flags & SCTL_MASK32) { - struct if_msghdr32 *ifm32; - - ifm32 = (struct if_msghdr32 *)w->w_tmem; - ifm32->ifm_index = ifp->if_index; - ifm32->ifm_flags = ifp->if_flags | - ifp->if_drv_flags; - copy_ifdata32(&ifp->if_data, &ifm32->ifm_data); - ifm32->ifm_addrs = info.rti_addrs; - error = SYSCTL_OUT(w->w_req, (caddr_t)ifm32, - len); - goto sysctl_out; - } -#endif - ifm = (struct if_msghdr *)w->w_tmem; - ifm->ifm_index = ifp->if_index; - ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; - ifm->ifm_data = ifp->if_data; - ifm->ifm_addrs = info.rti_addrs; - error = SYSCTL_OUT(w->w_req, (caddr_t)ifm, len); -#ifdef COMPAT_FREEBSD32 - sysctl_out: -#endif + if (w->w_op == NET_RT_IFLISTL) + error = sysctl_iflist_ifml(ifp, &info, w, len); + else + error = sysctl_iflist_ifm(ifp, &info, w, len); if (error) goto done; } @@ -1531,25 +1744,23 @@ sysctl_iflist(int af, struct walkarg *w) info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr; len = rt_msg2(RTM_NEWADDR, &info, NULL, w); if (w->w_req && w->w_tmem) { - struct ifa_msghdr *ifam; - - ifam = (struct ifa_msghdr *)w->w_tmem; - ifam->ifam_index = ifa->ifa_ifp->if_index; - ifam->ifam_flags = ifa->ifa_flags; - ifam->ifam_metric = ifa->ifa_metric; - ifam->ifam_addrs = info.rti_addrs; - error = SYSCTL_OUT(w->w_req, w->w_tmem, len); + if (w->w_op == NET_RT_IFLISTL) + error = sysctl_iflist_ifaml(ifa, &info, + w, len); + else + error = sysctl_iflist_ifam(ifa, &info, + w, len); if (error) goto done; } } - IF_ADDR_UNLOCK(ifp); + IF_ADDR_RUNLOCK(ifp); info.rti_info[RTAX_IFA] = info.rti_info[RTAX_NETMASK] = info.rti_info[RTAX_BRD] = NULL; } done: if (ifp != NULL) - IF_ADDR_UNLOCK(ifp); + IF_ADDR_RUNLOCK(ifp); IFNET_RUNLOCK(); return (error); } @@ -1570,7 +1781,7 @@ sysctl_ifmalist(int af, struct walkarg *w) continue; ifa = ifp->if_addr; info.rti_info[RTAX_IFP] = ifa ? ifa->ifa_addr : NULL; - IF_ADDR_LOCK(ifp); + IF_ADDR_RLOCK(ifp); TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { if (af && af != ifma->ifma_addr->sa_family) continue; @@ -1591,12 +1802,12 @@ sysctl_ifmalist(int af, struct walkarg *w) ifmam->ifmam_addrs = info.rti_addrs; error = SYSCTL_OUT(w->w_req, w->w_tmem, len); if (error) { - IF_ADDR_UNLOCK(ifp); + IF_ADDR_RUNLOCK(ifp); goto done; } } } - IF_ADDR_UNLOCK(ifp); + IF_ADDR_RUNLOCK(ifp); } done: IFNET_RUNLOCK(); @@ -1662,16 +1873,17 @@ sysctl_rtsock(SYSCTL_HANDLER_ARGS) rnh = rt_tables_get_rnh(BSD_DEFAULT_FIB, i); #endif /* __rtems__ */ if (rnh != NULL) { - RADIX_NODE_HEAD_LOCK(rnh); + RADIX_NODE_HEAD_RLOCK(rnh); error = rnh->rnh_walktree(rnh, sysctl_dumpentry, &w); - RADIX_NODE_HEAD_UNLOCK(rnh); + RADIX_NODE_HEAD_RUNLOCK(rnh); } else if (af != 0) error = EAFNOSUPPORT; } break; case NET_RT_IFLIST: + case NET_RT_IFLISTL: error = sysctl_iflist(af, &w); break; -- cgit v1.2.3