diff options
33 files changed, 38 insertions, 2224 deletions
@@ -133,23 +133,6 @@ if test "$bird_cv_struct_ip_mreqn" = yes ; then fi ]) -AC_DEFUN(BIRD_CHECK_LINUX_VERSION, -[AC_CACHE_CHECK([Linux kernel version], bird_cv_sys_linux_version, [ -AC_REQUIRE_CPP()dnl -cat > conftest.$ac_ext <<EOF -[#]line __oline__ "configure" -#include "confdefs.h" -#include <linux/version.h> -VERSION: UTS_RELEASE -EOF -bird_cv_sys_linux_version=`eval "$ac_cpp conftest.$ac_ext" 2>&AC_FD_CC | sed '/^VERSION/!d;s/^VERSION: "//;s/".*//'` -rm -rf conftest* -if test -z "$bird_cv_sys_linux_version" ; then - AC_MSG_RESULT([unknown]) - AC_MSG_ERROR([Cannot determine kernel version]) -fi -])]) - AC_DEFUN(BIRD_CHECK_GCC_OPTIONS, [AC_CACHE_VAL(bird_cv_c_option_no_pointer_sign, [ cat >conftest.c <<EOF diff --git a/configure.in b/configure.in index 46a6ecd9..7d9560d3 100644 --- a/configure.in +++ b/configure.in @@ -105,19 +105,11 @@ elif test -f sysconfig.h ; then sysdesc=sysconfig else case "$ip:$host_os" in - ipv4:linux*) BIRD_CHECK_LINUX_VERSION + ipv6:linux*) sysdesc=linux-v6 default_iproutedir="/etc/iproute2" - case $bird_cv_sys_linux_version in - 1.*|2.0.*) sysdesc=linux-20 ;; - *) sysdesc=linux-22 ;; - esac ;; - ipv6:linux*) BIRD_CHECK_LINUX_VERSION + ipv4:linux*) sysdesc=linux default_iproutedir="/etc/iproute2" - case $bird_cv_sys_linux_version in - 1.*|2.0.*) AC_MSG_ERROR([This version of Linux doesn't support IPv6.]) ;; - *) sysdesc=linux-v6 ;; - esac ;; ipv6:netbsd*) sysdesc=bsd-v6 CPPFLAGS="$CPPFLAGS -I/usr/pkg/include" @@ -180,7 +172,7 @@ AC_MSG_RESULT(ok) AC_SUBST(protocols) case $sysdesc in - */linux-22*|*/linux-v6*) + */linux*|*/linux-v6*) AC_CHECK_HEADER(linux/rtnetlink.h,,[AC_MSG_ERROR([Appropriate version of Linux kernel headers not found.])],[ #include <asm/types.h> #include <sys/socket.h> diff --git a/nest/a-path.c b/nest/a-path.c index 058b4344..63ac402e 100644 --- a/nest/a-path.c +++ b/nest/a-path.c @@ -15,7 +15,6 @@ #include "lib/string.h" #include "filter/filter.h" - // static inline void put_as(byte *data, u32 as) { put_u32(data, as); } // static inline u32 get_as(byte *data) { return get_u32(data); } diff --git a/sysdep/bsd/Modules b/sysdep/bsd/Modules index 84abffdb..3729587d 100644 --- a/sysdep/bsd/Modules +++ b/sysdep/bsd/Modules @@ -1,6 +1,3 @@ -krt-scan.h -krt-iface.h -sysio.h -krt-set.h krt-sock.c -krt-sock.h +krt-sys.h +sysio.h diff --git a/sysdep/bsd/krt-iface.h b/sysdep/bsd/krt-iface.h deleted file mode 100644 index 278c4be9..00000000 --- a/sysdep/bsd/krt-iface.h +++ /dev/null @@ -1,33 +0,0 @@ -/* - * BIRD -- Unix Kernel Socket Route Syncer -- Dummy Include File - * - * (c) 2004 Ondrej Filip <feela@network.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#ifndef _BIRD_KRT_IFACE_H_ -#define _BIRD_KRT_IFACE_H_ - -/* - * We don't have split iface/scan/set parts. See krt-sock.h. - */ - -struct kif_params { -}; - -struct kif_status { -}; - - -static inline void kif_sys_init(struct kif_proto *p UNUSED) { } -static inline int kif_sys_reconfigure(struct kif_proto *p UNUSED, struct kif_config *n UNUSED, struct kif_config *o UNUSED) { return 1; } - -static inline void kif_sys_preconfig(struct config *c UNUSED) { } -static inline void kif_sys_postconfig(struct kif_config *c UNUSED) { } -static inline void kif_sys_init_config(struct kif_config *c UNUSED) { } -static inline void kif_sys_copy_config(struct kif_config *d UNUSED, struct kif_config *s UNUSED) { } - -static inline void kif_sys_io_init(void) { } - -#endif diff --git a/sysdep/bsd/krt-scan.h b/sysdep/bsd/krt-scan.h deleted file mode 100644 index 045b9e77..00000000 --- a/sysdep/bsd/krt-scan.h +++ /dev/null @@ -1,30 +0,0 @@ -/* - * BIRD -- *BSD Kernel Route Syncer -- Scanning - * - * (c) 2004 Ondrej Filip <feela@network.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#ifndef _BIRD_KRT_SCAN_H_ -#define _BIRD_KRT_SCAN_H_ - -struct krt_scan_params { -}; - -struct krt_scan_status { -}; - - -static inline void krt_sys_init(struct krt_proto *p UNUSED) { } -static inline int krt_sys_reconfigure(struct krt_proto *p UNUSED, struct krt_config *n UNUSED, struct krt_config *o UNUSED) { return 1; } - -static inline void krt_sys_preconfig(struct config *c UNUSED) { } -static inline void krt_sys_postconfig(struct krt_config *c UNUSED) { } -static inline void krt_sys_init_config(struct krt_config *c UNUSED) { } -static inline void krt_sys_copy_config(struct krt_config *d UNUSED, struct krt_config *s UNUSED) { } - - - - -#endif diff --git a/sysdep/bsd/krt-set.h b/sysdep/bsd/krt-set.h deleted file mode 100644 index b5453d4b..00000000 --- a/sysdep/bsd/krt-set.h +++ /dev/null @@ -1,17 +0,0 @@ -/* - * BIRD -- Unix Kernel Socket Route Syncer -- Dummy Include File - * - * (c) 2004 Ondrej Filip <feela@network.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#ifndef _BIRD_KRT_SET_H_ -#define _BIRD_KRT_SET_H_ - -/* - * We don't have split iface/scan/set parts. See krt-sock.h. - */ -#include "lib/krt-sock.h" - -#endif diff --git a/sysdep/bsd/krt-sock.h b/sysdep/bsd/krt-sock.h deleted file mode 100644 index d9a7ca5d..00000000 --- a/sysdep/bsd/krt-sock.h +++ /dev/null @@ -1,23 +0,0 @@ -/* - * BIRD -- Unix Kernel Route Syncer -- Setting - * - * (c) 2004 Ondrej Filip <feela@network.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#ifndef _BIRD_KRT_SOCK_H_ -#define _BIRD_KRT_SOCK_H_ - -struct krt_params { -}; - -struct krt_status { -}; - -static inline int krt_set_params_same(struct krt_set_params *o UNUSED, struct krt_set_params *n UNUSED) { return 1; } -static inline void krt_set_copy_params(struct krt_set_params *d UNUSED, struct krt_set_params *s UNUSED) { } - -void krt_read_msg(struct proto *p, struct ks_msg *msg, int scan); - -#endif diff --git a/sysdep/cf/README b/sysdep/cf/README index 3b5bcd4f..1c11edcf 100644 --- a/sysdep/cf/README +++ b/sysdep/cf/README @@ -5,19 +5,9 @@ CONFIG_AUTO_ROUTES Device routes are added automagically by the kernel CONFIG_SELF_CONSCIOUS We're able to recognize whether route was installed by us CONFIG_MULTIPLE_TABLES The kernel supports multiple routing tables CONFIG_ALL_TABLES_AT_ONCE Kernel scanner wants to process all tables at once -CONFIG_MC_PROPER_SRC Multicast packets have source address according to socket saddr field -CONFIG_RESTRICTED_PRIVILEGES Implements restricted privileges using drop_uid() -CONFIG_UNIX_IFACE Use Unix interface scanner -CONFIG_UNIX_SET Use Unix route setting -CONFIG_UNIX_DONTROUTE Use setsockopts DONTROUTE (undef for *BSD) +CONFIG_MC_PROPER_SRC Multicast packets have source address according to socket saddr field CONFIG_SKIP_MC_BIND Don't call bind on multicast socket (def for *BSD) -CONFIG_LINUX_SCAN Use Linux /proc/net/route scanner - -CONFIG_ALL_MULTICAST krt-iface: All devices support multicasting (i.e., ignore IFF_MULTICAST) -CONFIG_UNNUM_MULTICAST krt-iface: We support multicasts on unnumbered PtP devices - -CONFIG_LINUX_MC_MREQN Linux: Use struct mreqn for multicasting -CONFIG_LINUX_MC_MREQ Linux: Use struct mreq -CONFIG_LINUX_MC_MREQ_BIND Linux: Use struct mreq and SO_BINDTODEVICE +CONFIG_UNIX_DONTROUTE Use setsockopts DONTROUTE (undef for *BSD) +CONFIG_RESTRICTED_PRIVILEGES Implements restricted privileges using drop_uid() diff --git a/sysdep/cf/bsd-v6.h b/sysdep/cf/bsd-v6.h index 66985abf..b7f25f64 100644 --- a/sysdep/cf/bsd-v6.h +++ b/sysdep/cf/bsd-v6.h @@ -10,14 +10,8 @@ #define CONFIG_AUTO_ROUTES #define CONFIG_SELF_CONSCIOUS -#undef CONFIG_MULTIPLE_TABLES - -#undef CONFIG_UNIX_IFACE -#undef CONFIG_UNIX_SET #define CONFIG_SKIP_MC_BIND -#define CONFIG_ALL_MULTICAST -#define CONFIG_UNNUM_MULTICAST /* Link: sysdep/unix diff --git a/sysdep/cf/bsd.h b/sysdep/cf/bsd.h index acd1b58b..e7cc135f 100644 --- a/sysdep/cf/bsd.h +++ b/sysdep/cf/bsd.h @@ -8,15 +8,8 @@ #define CONFIG_AUTO_ROUTES #define CONFIG_SELF_CONSCIOUS -#undef CONFIG_MULTIPLE_TABLES - -#undef CONFIG_UNIX_IFACE -#undef CONFIG_UNIX_SET -#undef CONFIG_UNIX_DONTROUTE #define CONFIG_SKIP_MC_BIND -#define CONFIG_ALL_MULTICAST -#define CONFIG_UNNUM_MULTICAST /* Link: sysdep/unix diff --git a/sysdep/cf/linux-20.h b/sysdep/cf/linux-20.h deleted file mode 100644 index e409706a..00000000 --- a/sysdep/cf/linux-20.h +++ /dev/null @@ -1,26 +0,0 @@ -/* - * Configuration for Linux 2.0 based systems - * - * (c) 1998--1999 Martin Mares <mj@ucw.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#undef CONFIG_AUTO_ROUTES -#undef CONFIG_SELF_CONSCIOUS -#undef CONFIG_MULTIPLE_TABLES - -#define CONFIG_UNIX_IFACE -#define CONFIG_UNIX_SET -#define CONFIG_UNIX_DONTROUTE -#undef CONFIG_SKIP_MC_BIND -#define CONFIG_LINUX_SCAN - -#define CONFIG_LINUX_MC_MREQ_BIND -#define CONFIG_ALL_MULTICAST -#define CONFIG_UNNUM_MULTICAST - -/* -Link: sysdep/linux -Link: sysdep/unix - */ diff --git a/sysdep/cf/linux-21.h b/sysdep/cf/linux-21.h deleted file mode 100644 index 0fce7053..00000000 --- a/sysdep/cf/linux-21.h +++ /dev/null @@ -1,26 +0,0 @@ -/* - * Configuration for Linux 2.1/2.2 based systems without Netlink - * - * (c) 1998--1999 Martin Mares <mj@ucw.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#define CONFIG_AUTO_ROUTES -#undef CONFIG_SELF_CONSCIOUS -#undef CONFIG_MULTIPLE_TABLES - -#define CONFIG_UNIX_IFACE -#define CONFIG_UNIX_SET -#define CONFIG_UNIX_DONTROUTE -#undef CONFIG_SKIP_MC_BIND -#define CONFIG_LINUX_SCAN - -#define CONFIG_LINUX_MC_MREQN -#define CONFIG_ALL_MULTICAST -#define CONFIG_UNNUM_MULTICAST - -/* -Link: sysdep/linux -Link: sysdep/unix - */ diff --git a/sysdep/cf/linux-22.h b/sysdep/cf/linux-22.h deleted file mode 100644 index 51b339d1..00000000 --- a/sysdep/cf/linux-22.h +++ /dev/null @@ -1,26 +0,0 @@ -/* - * Configuration for Linux 2.2 based systems - * - * (c) 1998--1999 Martin Mares <mj@ucw.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#define CONFIG_AUTO_ROUTES -#define CONFIG_SELF_CONSCIOUS -#define CONFIG_MULTIPLE_TABLES -#define CONFIG_ALL_TABLES_AT_ONCE -#define CONFIG_MC_PROPER_SRC - -#undef CONFIG_SKIP_MC_BIND - -#define CONFIG_LINUX_MC_MREQN -#define CONFIG_UNIX_DONTROUTE - -#define CONFIG_RESTRICTED_PRIVILEGES - -/* -Link: sysdep/linux/netlink -Link: sysdep/linux -Link: sysdep/unix - */ diff --git a/sysdep/cf/linux-v6.h b/sysdep/cf/linux-v6.h index 467d7728..09f60377 100644 --- a/sysdep/cf/linux-v6.h +++ b/sysdep/cf/linux-v6.h @@ -1,5 +1,5 @@ /* - * Configuration for Linux 2.2 based systems running IPv6 + * Configuration for Linux based systems running IPv6 * * (c) 1998--1999 Martin Mares <mj@ucw.cz> * @@ -9,20 +9,13 @@ #define IPV6 #define CONFIG_AUTO_ROUTES -#define CONFIG_ALL_MULTICAST #define CONFIG_SELF_CONSCIOUS - -/* - * Netlink supports multiple tables, but kernel IPv6 code doesn't, so we - * treat it as a multiple table system with number of tables set to 1. - */ #define CONFIG_MULTIPLE_TABLES #define CONFIG_ALL_TABLES_AT_ONCE #define CONFIG_RESTRICTED_PRIVILEGES /* -Link: sysdep/linux/netlink Link: sysdep/linux Link: sysdep/unix */ diff --git a/sysdep/linux/Modules b/sysdep/linux/Modules index 09f4a470..940660b6 100644 --- a/sysdep/linux/Modules +++ b/sysdep/linux/Modules @@ -1,6 +1,5 @@ -#ifdef CONFIG_LINUX_SCAN -krt-scan.c -krt-scan.h -#endif +krt-sys.h +netlink.c +netlink.Y sysio.h syspriv.h diff --git a/sysdep/linux/krt-scan.c b/sysdep/linux/krt-scan.c deleted file mode 100644 index 8591607e..00000000 --- a/sysdep/linux/krt-scan.c +++ /dev/null @@ -1,199 +0,0 @@ -/* - * BIRD -- Linux Routing Table Scanning - * - * (c) 1998--2000 Martin Mares <mj@ucw.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#include <stdio.h> -#include <ctype.h> -#include <fcntl.h> -#include <unistd.h> -#include <net/route.h> - -#undef LOCAL_DEBUG - -#include "nest/bird.h" -#include "nest/route.h" -#include "nest/protocol.h" -#include "nest/iface.h" -#include "lib/timer.h" -#include "lib/unix.h" -#include "lib/krt.h" -#include "lib/string.h" - -static int krt_scan_fd = -1; - -struct iface * -krt_temp_iface(struct krt_proto *p, char *name) -{ - struct iface *i; - - WALK_LIST(i, p->scan.temp_ifs) - if (!strcmp(i->name, name)) - return i; - i = mb_allocz(p->p.pool, sizeof(struct iface)); - strcpy(i->name, name); - add_tail(&p->scan.temp_ifs, &i->n); - return i; -} - -static void -krt_parse_entry(byte *ent, struct krt_proto *p) -{ - u32 dest0, gw0, mask0; - ip_addr dest, gw, mask; - unsigned int flags; - int masklen; - net *net; - byte *iface = ent; - rte *e; - - if (sscanf(ent, "%*s\t%x\t%x\t%x\t%*d\t%*d\t%*d\t%x\t", &dest0, &gw0, &flags, &mask0) != 4) - { - log(L_ERR "krt read: unable to parse `%s'", ent); - return; - } - while (*ent != '\t') - ent++; - *ent = 0; - - dest = ipa_from_u32(dest0); - ipa_ntoh(dest); - gw = ipa_from_u32(gw0); - ipa_ntoh(gw); - mask = ipa_from_u32(mask0); - ipa_ntoh(mask); - if ((masklen = ipa_mklen(mask)) < 0) - { - log(L_ERR "krt read: invalid netmask %08x", mask0); - return; - } - DBG("Got %I/%d via %I flags %x\n", dest, masklen, gw, flags); - - if (!(flags & RTF_UP)) - { - DBG("Down.\n"); - return; - } - if (flags & RTF_HOST) - masklen = 32; - if (flags & (RTF_DYNAMIC | RTF_MODIFIED)) /* Redirect route */ - { - log(L_WARN "krt: Ignoring redirect to %I/%d via %I", dest, masklen, gw); - return; - } - - net = net_get(p->p.table, dest, masklen); - - rta a = { - .proto = &p->p, - .source = RTS_INHERIT, - .scope = SCOPE_UNIVERSE, - .cast = RTC_UNICAST - }; - - if (flags & RTF_GATEWAY) - { - neighbor *ng = neigh_find(&p->p, &gw, 0); - if (ng && ng->scope) - a.iface = ng->iface; - else - { - log(L_WARN "Kernel told us to use non-neighbor %I for %I/%d", gw, net->n.prefix, net->n.pxlen); - return; - } - a.dest = RTD_ROUTER; - a.gw = gw; - } - else if (flags & RTF_REJECT) - { - a.dest = RTD_UNREACHABLE; - a.gw = IPA_NONE; - } - else if (isalpha(iface[0])) - { - a.dest = RTD_DEVICE; - a.gw = IPA_NONE; - a.iface = krt_temp_iface(p, iface); - } - else - { - log(L_WARN "Kernel reporting unknown route type to %I/%d", net->n.prefix, net->n.pxlen); - return; - } - - e = rte_get_temp(&a); - e->net = net; - e->u.krt.src = KRT_SRC_UNKNOWN; - krt_got_route(p, e); -} - -void -krt_scan_fire(struct krt_proto *p) -{ - byte buf[32768]; - int l, seen_hdr; - - if (krt_scan_fd < 0) - { - krt_scan_fd = open("/proc/net/route", O_RDONLY); - if (krt_scan_fd < 0) - die("/proc/net/route: %m"); - } - else if (lseek(krt_scan_fd, 0, SEEK_SET) < 0) - { - log(L_ERR "krt seek: %m"); - return; - } - seen_hdr = 0; - while ((l = read(krt_scan_fd, buf, sizeof(buf))) > 0) - { - byte *z = buf; - if (l & 127) - { - log(L_ERR "krt read: misaligned entry: l=%d", l); - return; - } - while (l >= 128) - { - if (seen_hdr++) - krt_parse_entry(z, p); - z += 128; - l -= 128; - } - } - if (l < 0) - { - log(L_ERR "krt read: %m"); - return; - } - DBG("KRT scan done, seen %d lines\n", seen_hdr); -} - -void -krt_scan_construct(struct krt_config *c) -{ -} - -void -krt_scan_preconfig(struct config *c) -{ -} - -void -krt_scan_postconfig(struct krt_config *c) -{ -} - -void -krt_scan_start(struct krt_proto *x, int first) -{ - init_list(&x->scan.temp_ifs); -} - -void -krt_scan_shutdown(struct krt_proto *x, int last) -{ -} diff --git a/sysdep/linux/krt-scan.h b/sysdep/linux/krt-scan.h deleted file mode 100644 index 6c7e440f..00000000 --- a/sysdep/linux/krt-scan.h +++ /dev/null @@ -1,21 +0,0 @@ -/* - * BIRD -- Linux Kernel Route Syncer -- Scanning - * - * (c) 1998--2000 Martin Mares <mj@ucw.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#ifndef _BIRD_KRT_SCAN_H_ -#define _BIRD_KRT_SCAN_H_ - -struct krt_scan_params { -}; - -struct krt_scan_status { - list temp_ifs; /* Temporary interfaces */ -}; - -static inline int krt_scan_params_same(struct krt_scan_params *o, struct krt_scan_params *n) { return 1; } - -#endif diff --git a/sysdep/linux/netlink/Modules b/sysdep/linux/netlink/Modules deleted file mode 100644 index c26f7f72..00000000 --- a/sysdep/linux/netlink/Modules +++ /dev/null @@ -1,5 +0,0 @@ -krt-iface.h -krt-set.h -krt-scan.h -netlink.c -netlink.Y diff --git a/sysdep/linux/netlink/krt-iface.h b/sysdep/linux/netlink/krt-iface.h deleted file mode 100644 index 8cfe1073..00000000 --- a/sysdep/linux/netlink/krt-iface.h +++ /dev/null @@ -1,33 +0,0 @@ -/* - * BIRD -- Unix Kernel Netlink Interface Syncer -- Dummy Include File - * - * (c) 1998--1999 Martin Mares <mj@ucw.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#ifndef _BIRD_KRT_IFACE_H_ -#define _BIRD_KRT_IFACE_H_ - -/* - * We don't have split iface/scan/set parts. See krt-scan.h. - */ - -struct kif_params { -}; - -struct kif_status { -}; - - -static inline void kif_sys_init(struct kif_proto *p UNUSED) { } -static inline int kif_sys_reconfigure(struct kif_proto *p UNUSED, struct kif_config *n UNUSED, struct kif_config *o UNUSED) { return 1; } - -static inline void kif_sys_preconfig(struct config *c UNUSED) { } -static inline void kif_sys_postconfig(struct kif_config *c UNUSED) { } -static inline void kif_sys_init_config(struct kif_config *c UNUSED) { } -static inline void kif_sys_copy_config(struct kif_config *d UNUSED, struct kif_config *s UNUSED) { } - -static inline void kif_sys_io_init(void) { } - -#endif diff --git a/sysdep/linux/netlink/krt-scan.h b/sysdep/linux/netlink/krt-scan.h deleted file mode 100644 index 302b6093..00000000 --- a/sysdep/linux/netlink/krt-scan.h +++ /dev/null @@ -1,30 +0,0 @@ -/* - * BIRD -- Linux Kernel Netlink Route Syncer -- Scanning - * - * (c) 1998--2000 Martin Mares <mj@ucw.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#ifndef _BIRD_KRT_SCAN_H_ -#define _BIRD_KRT_SCAN_H_ - -/* - * We don't have split iface/scan/set for Netlink. All options - * and run-time parameters are declared here instead of splitting - * to krt-set.h, krt-iface.h and this file. - */ - -#define NL_NUM_TABLES 256 - -struct krt_params { - int table_id; /* Kernel table ID we sync with */ -}; - -struct krt_status { -}; - - -static inline void krt_sys_init(struct krt_proto *p UNUSED) { } - -#endif diff --git a/sysdep/linux/netlink/krt-set.h b/sysdep/linux/netlink/krt-set.h deleted file mode 100644 index 4a08217b..00000000 --- a/sysdep/linux/netlink/krt-set.h +++ /dev/null @@ -1,28 +0,0 @@ -/* - * BIRD -- Unix Kernel Netlink Route Syncer -- Dummy Include File - * - * (c) 1998--2000 Martin Mares <mj@ucw.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#ifndef _BIRD_KRT_SET_H_ -#define _BIRD_KRT_SET_H_ - -/* - * We don't have split iface/scan/set parts. See krt-scan.h. - */ - -struct krt_set_params { -}; - -struct krt_set_status { -}; - -static inline void krt_set_construct(struct krt_config *c UNUSED) { }; -static inline void krt_set_start(struct krt_proto *p UNUSED, int first UNUSED) { }; -static inline void krt_set_shutdown(struct krt_proto *p UNUSED, int last UNUSED) { }; -static inline int krt_set_params_same(struct krt_set_params *o UNUSED, struct krt_set_params *n UNUSED) { return 1; } -static inline void krt_set_copy_params(struct krt_set_params *d UNUSED, struct krt_set_params *s UNUSED) { } - -#endif diff --git a/sysdep/linux/netlink/netlink.Y b/sysdep/linux/netlink/netlink.Y deleted file mode 100644 index 51689ff9..00000000 --- a/sysdep/linux/netlink/netlink.Y +++ /dev/null @@ -1,32 +0,0 @@ -/* - * BIRD -- Linux Netlink Configuration - * - * (c) 1999--2000 Martin Mares <mj@ucw.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -CF_HDR - -CF_DECLS - -CF_KEYWORDS(ASYNC, KERNEL, TABLE, KRT_PREFSRC, KRT_REALM) - -CF_GRAMMAR - -CF_ADDTO(kern_proto, kern_proto nl_item ';') - -nl_item: - KERNEL TABLE expr { - if ($3 <= 0 || $3 >= NL_NUM_TABLES) - cf_error("Kernel routing table number out of range"); - THIS_KRT->sys.table_id = $3; - } - ; - -CF_ADDTO(dynamic_attr, KRT_PREFSRC { $$ = f_new_dynamic_attr(EAF_TYPE_IP_ADDRESS, T_IP, EA_KRT_PREFSRC); }) -CF_ADDTO(dynamic_attr, KRT_REALM { $$ = f_new_dynamic_attr(EAF_TYPE_INT, T_INT, EA_KRT_REALM); }) - -CF_CODE - -CF_END diff --git a/sysdep/linux/netlink/netlink.c b/sysdep/linux/netlink/netlink.c deleted file mode 100644 index e3faf043..00000000 --- a/sysdep/linux/netlink/netlink.c +++ /dev/null @@ -1,1149 +0,0 @@ -/* - * BIRD -- Linux Netlink Interface - * - * (c) 1999--2000 Martin Mares <mj@ucw.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#include <stdio.h> -#include <fcntl.h> -#include <sys/socket.h> -#include <sys/uio.h> -#include <errno.h> - -#undef LOCAL_DEBUG - -#include "nest/bird.h" -#include "nest/route.h" -#include "nest/protocol.h" -#include "nest/iface.h" -#include "lib/alloca.h" -#include "lib/timer.h" -#include "lib/unix.h" -#include "lib/krt.h" -#include "lib/socket.h" -#include "lib/string.h" -#include "conf/conf.h" - -#include <asm/types.h> -#include <linux/if.h> -#include <linux/netlink.h> -#include <linux/rtnetlink.h> - -#ifndef MSG_TRUNC /* Hack: Several versions of glibc miss this one :( */ -#define MSG_TRUNC 0x20 -#endif - -#ifndef IFF_LOWER_UP -#define IFF_LOWER_UP 0x10000 -#endif - -/* - * Synchronous Netlink interface - */ - -struct nl_sock -{ - int fd; - u32 seq; - byte *rx_buffer; /* Receive buffer */ - struct nlmsghdr *last_hdr; /* Recently received packet */ - unsigned int last_size; -}; - -#define NL_RX_SIZE 8192 - -static struct nl_sock nl_scan = {.fd = -1}; /* Netlink socket for synchronous scan */ -static struct nl_sock nl_req = {.fd = -1}; /* Netlink socket for requests */ - -static void -nl_open_sock(struct nl_sock *nl) -{ - if (nl->fd < 0) - { - nl->fd = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE); - if (nl->fd < 0) - die("Unable to open rtnetlink socket: %m"); - nl->seq = now; - nl->rx_buffer = xmalloc(NL_RX_SIZE); - nl->last_hdr = NULL; - nl->last_size = 0; - } -} - -static void -nl_open(void) -{ - nl_open_sock(&nl_scan); - nl_open_sock(&nl_req); -} - -static void -nl_send(struct nl_sock *nl, struct nlmsghdr *nh) -{ - struct sockaddr_nl sa; - - memset(&sa, 0, sizeof(sa)); - sa.nl_family = AF_NETLINK; - nh->nlmsg_pid = 0; - nh->nlmsg_seq = ++(nl->seq); - if (sendto(nl->fd, nh, nh->nlmsg_len, 0, (struct sockaddr *)&sa, sizeof(sa)) < 0) - die("rtnetlink sendto: %m"); - nl->last_hdr = NULL; -} - -static void -nl_request_dump(int cmd) -{ - struct { - struct nlmsghdr nh; - struct rtgenmsg g; - } req; - req.nh.nlmsg_type = cmd; - req.nh.nlmsg_len = sizeof(req); - req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; - /* Is it important which PF_* is used for link-level interface scan? - It seems that some information is available only when PF_INET is used. */ - req.g.rtgen_family = (cmd == RTM_GETLINK) ? PF_INET : BIRD_PF; - nl_send(&nl_scan, &req.nh); -} - -static struct nlmsghdr * -nl_get_reply(struct nl_sock *nl) -{ - for(;;) - { - if (!nl->last_hdr) - { - struct iovec iov = { nl->rx_buffer, NL_RX_SIZE }; - struct sockaddr_nl sa; - struct msghdr m = { (struct sockaddr *) &sa, sizeof(sa), &iov, 1, NULL, 0, 0 }; - int x = recvmsg(nl->fd, &m, 0); - if (x < 0) - die("nl_get_reply: %m"); - if (sa.nl_pid) /* It isn't from the kernel */ - { - DBG("Non-kernel packet\n"); - continue; - } - nl->last_size = x; - nl->last_hdr = (void *) nl->rx_buffer; - if (m.msg_flags & MSG_TRUNC) - bug("nl_get_reply: got truncated reply which should be impossible"); - } - if (NLMSG_OK(nl->last_hdr, nl->last_size)) - { - struct nlmsghdr *h = nl->last_hdr; - nl->last_hdr = NLMSG_NEXT(h, nl->last_size); - if (h->nlmsg_seq != nl->seq) - { - log(L_WARN "nl_get_reply: Ignoring out of sequence netlink packet (%x != %x)", - h->nlmsg_seq, nl->seq); - continue; - } - return h; - } - if (nl->last_size) - log(L_WARN "nl_get_reply: Found packet remnant of size %d", nl->last_size); - nl->last_hdr = NULL; - } -} - -static struct rate_limit rl_netlink_err; - -static int -nl_error(struct nlmsghdr *h) -{ - struct nlmsgerr *e; - int ec; - - if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) - { - log(L_WARN "Netlink: Truncated error message received"); - return ENOBUFS; - } - e = (struct nlmsgerr *) NLMSG_DATA(h); - ec = -e->error; - if (ec) - log_rl(&rl_netlink_err, L_WARN "Netlink: %s", strerror(ec)); - return ec; -} - -static struct nlmsghdr * -nl_get_scan(void) -{ - struct nlmsghdr *h = nl_get_reply(&nl_scan); - - if (h->nlmsg_type == NLMSG_DONE) - return NULL; - if (h->nlmsg_type == NLMSG_ERROR) - { - nl_error(h); - return NULL; - } - return h; -} - -static int -nl_exchange(struct nlmsghdr *pkt) -{ - struct nlmsghdr *h; - - nl_send(&nl_req, pkt); - for(;;) - { - h = nl_get_reply(&nl_req); - if (h->nlmsg_type == NLMSG_ERROR) - break; - log(L_WARN "nl_exchange: Unexpected reply received"); - } - return nl_error(h) ? -1 : 0; -} - -/* - * Netlink attributes - */ - -static int nl_attr_len; - -static void * -nl_checkin(struct nlmsghdr *h, int lsize) -{ - nl_attr_len = h->nlmsg_len - NLMSG_LENGTH(lsize); - if (nl_attr_len < 0) - { - log(L_ERR "nl_checkin: underrun by %d bytes", -nl_attr_len); - return NULL; - } - return NLMSG_DATA(h); -} - -static int -nl_parse_attrs(struct rtattr *a, struct rtattr **k, int ksize) -{ - int max = ksize / sizeof(struct rtattr *); - bzero(k, ksize); - while (RTA_OK(a, nl_attr_len)) - { - if (a->rta_type < max) - k[a->rta_type] = a; - a = RTA_NEXT(a, nl_attr_len); - } - if (nl_attr_len) - { - log(L_ERR "nl_parse_attrs: remnant of size %d", nl_attr_len); - return 0; - } - else - return 1; -} - -void -nl_add_attr(struct nlmsghdr *h, unsigned bufsize, unsigned code, - void *data, unsigned dlen) -{ - unsigned len = RTA_LENGTH(dlen); - unsigned pos = NLMSG_ALIGN(h->nlmsg_len); - struct rtattr *a; - - if (pos + len > bufsize) - bug("nl_add_attr: packet buffer overflow"); - a = (struct rtattr *)((char *)h + pos); - a->rta_type = code; - a->rta_len = len; - h->nlmsg_len = pos + len; - memcpy(RTA_DATA(a), data, dlen); -} - -static inline void -nl_add_attr_u32(struct nlmsghdr *h, unsigned bufsize, int code, u32 data) -{ - nl_add_attr(h, bufsize, code, &data, 4); -} - -static inline void -nl_add_attr_ipa(struct nlmsghdr *h, unsigned bufsize, int code, ip_addr ipa) -{ - ipa_hton(ipa); - nl_add_attr(h, bufsize, code, &ipa, sizeof(ipa)); -} - -#define RTNH_SIZE (sizeof(struct rtnexthop) + sizeof(struct rtattr) + sizeof(ip_addr)) - -static inline void -add_mpnexthop(char *buf, ip_addr ipa, unsigned iface, unsigned char weight) -{ - struct rtnexthop *nh = (void *) buf; - struct rtattr *rt = (void *) (buf + sizeof(*nh)); - nh->rtnh_len = RTNH_SIZE; - nh->rtnh_flags = 0; - nh->rtnh_hops = weight; - nh->rtnh_ifindex = iface; - rt->rta_len = sizeof(*rt) + sizeof(ipa); - rt->rta_type = RTA_GATEWAY; - ipa_hton(ipa); - memcpy(buf + sizeof(*nh) + sizeof(*rt), &ipa, sizeof(ipa)); -} - - -static void -nl_add_multipath(struct nlmsghdr *h, unsigned bufsize, struct mpnh *nh) -{ - unsigned len = sizeof(struct rtattr); - unsigned pos = NLMSG_ALIGN(h->nlmsg_len); - char *buf = (char *)h + pos; - struct rtattr *rt = (void *) buf; - buf += len; - - for (; nh; nh = nh->next) - { - len += RTNH_SIZE; - if (pos + len > bufsize) - bug("nl_add_multipath: packet buffer overflow"); - - add_mpnexthop(buf, nh->gw, nh->iface->index, nh->weight); - buf += RTNH_SIZE; - } - - rt->rta_type = RTA_MULTIPATH; - rt->rta_len = len; - h->nlmsg_len = pos + len; -} - - -static struct mpnh * -nl_parse_multipath(struct krt_proto *p, struct rtattr *ra) -{ - /* Temporary buffer for multicast nexthops */ - static struct mpnh *nh_buffer; - static int nh_buf_size; /* in number of structures */ - static int nh_buf_used; - - struct rtattr *a[RTA_CACHEINFO+1]; - struct rtnexthop *nh = RTA_DATA(ra); - struct mpnh *rv, *first, **last; - int len = RTA_PAYLOAD(ra); - - first = NULL; - last = &first; - nh_buf_used = 0; - - while (len) - { - /* Use RTNH_OK(nh,len) ?? */ - if ((len < sizeof(*nh)) || (len < nh->rtnh_len)) - return NULL; - - if (nh_buf_used == nh_buf_size) - { - nh_buf_size = nh_buf_size ? (nh_buf_size * 2) : 4; - nh_buffer = xrealloc(nh_buffer, nh_buf_size * sizeof(struct mpnh)); - } - *last = rv = nh_buffer + nh_buf_used++; - rv->next = NULL; - last = &(rv->next); - - rv->weight = nh->rtnh_hops; - rv->iface = if_find_by_index(nh->rtnh_ifindex); - if (!rv->iface) - return NULL; - - /* Nonexistent RTNH_PAYLOAD ?? */ - nl_attr_len = nh->rtnh_len - RTNH_LENGTH(0); - nl_parse_attrs(RTNH_DATA(nh), a, sizeof(a)); - if (a[RTA_GATEWAY]) - { - if (RTA_PAYLOAD(a[RTA_GATEWAY]) != sizeof(ip_addr)) - return NULL; - - memcpy(&rv->gw, RTA_DATA(a[RTA_GATEWAY]), sizeof(ip_addr)); - ipa_ntoh(rv->gw); - - neighbor *ng = neigh_find2(&p->p, &rv->gw, rv->iface, - (nh->rtnh_flags & RTNH_F_ONLINK) ? NEF_ONLINK : 0); - if (!ng || (ng->scope == SCOPE_HOST)) - return NULL; - } - else - return NULL; - - len -= NLMSG_ALIGN(nh->rtnh_len); - nh = RTNH_NEXT(nh); - } - - return first; -} - - -/* - * Scanning of interfaces - */ - -static void -nl_parse_link(struct nlmsghdr *h, int scan) -{ - struct ifinfomsg *i; - struct rtattr *a[IFLA_WIRELESS+1]; - int new = h->nlmsg_type == RTM_NEWLINK; - struct iface f = {}; - struct iface *ifi; - char *name; - u32 mtu; - unsigned int fl; - - if (!(i = nl_checkin(h, sizeof(*i))) || !nl_parse_attrs(IFLA_RTA(i), a, sizeof(a))) - return; - if (!a[IFLA_IFNAME] || RTA_PAYLOAD(a[IFLA_IFNAME]) < 2 || - !a[IFLA_MTU] || RTA_PAYLOAD(a[IFLA_MTU]) != 4) - { - if (scan || !a[IFLA_WIRELESS]) - log(L_ERR "nl_parse_link: Malformed message received"); - return; - } - name = RTA_DATA(a[IFLA_IFNAME]); - memcpy(&mtu, RTA_DATA(a[IFLA_MTU]), sizeof(u32)); - - ifi = if_find_by_index(i->ifi_index); - if (!new) - { - DBG("KIF: IF%d(%s) goes down\n", i->ifi_index, name); - if (!ifi) - return; - - if_delete(ifi); - } - else - { - DBG("KIF: IF%d(%s) goes up (mtu=%d,flg=%x)\n", i->ifi_index, name, mtu, i->ifi_flags); - if (ifi && strncmp(ifi->name, name, sizeof(ifi->name)-1)) - if_delete(ifi); - - strncpy(f.name, name, sizeof(f.name)-1); - f.index = i->ifi_index; - f.mtu = mtu; - - fl = i->ifi_flags; - if (fl & IFF_UP) - f.flags |= IF_ADMIN_UP; - if (fl & IFF_LOWER_UP) - f.flags |= IF_LINK_UP; - if (fl & IFF_LOOPBACK) /* Loopback */ - f.flags |= IF_MULTIACCESS | IF_LOOPBACK | IF_IGNORE; - else if (fl & IFF_POINTOPOINT) /* PtP */ - f.flags |= IF_MULTICAST; - else if (fl & IFF_BROADCAST) /* Broadcast */ - f.flags |= IF_MULTIACCESS | IF_BROADCAST | IF_MULTICAST; - else - f.flags |= IF_MULTIACCESS; /* NBMA */ - if_update(&f); - } -} - -static void -nl_parse_addr(struct nlmsghdr *h) -{ - struct ifaddrmsg *i; - struct rtattr *a[IFA_ANYCAST+1]; - int new = h->nlmsg_type == RTM_NEWADDR; - struct ifa ifa; - struct iface *ifi; - int scope; - - if (!(i = nl_checkin(h, sizeof(*i))) || !nl_parse_attrs(IFA_RTA(i), a, sizeof(a))) - return; - if (i->ifa_family != BIRD_AF) - return; - if (!a[IFA_ADDRESS] || RTA_PAYLOAD(a[IFA_ADDRESS]) != sizeof(ip_addr) -#ifdef IPV6 - || a[IFA_LOCAL] && RTA_PAYLOAD(a[IFA_LOCAL]) != sizeof(ip_addr) -#else - || !a[IFA_LOCAL] || RTA_PAYLOAD(a[IFA_LOCAL]) != sizeof(ip_addr) - || (a[IFA_BROADCAST] && RTA_PAYLOAD(a[IFA_BROADCAST]) != sizeof(ip_addr)) -#endif - ) - { - log(L_ERR "nl_parse_addr: Malformed message received"); - return; - } - - ifi = if_find_by_index(i->ifa_index); - if (!ifi) - { - log(L_ERR "KIF: Received address message for unknown interface %d", i->ifa_index); - return; - } - - bzero(&ifa, sizeof(ifa)); - ifa.iface = ifi; - if (i->ifa_flags & IFA_F_SECONDARY) - ifa.flags |= IA_SECONDARY; - - /* IFA_LOCAL can be unset for IPv6 interfaces */ - memcpy(&ifa.ip, RTA_DATA(a[IFA_LOCAL] ? : a[IFA_ADDRESS]), sizeof(ifa.ip)); - ipa_ntoh(ifa.ip); - ifa.pxlen = i->ifa_prefixlen; - if (i->ifa_prefixlen > BITS_PER_IP_ADDRESS) - { - log(L_ERR "KIF: Invalid prefix length for interface %s: %d", ifi->name, i->ifa_prefixlen); - new = 0; - } - if (i->ifa_prefixlen == BITS_PER_IP_ADDRESS) - { - ip_addr addr; - memcpy(&addr, RTA_DATA(a[IFA_ADDRESS]), sizeof(addr)); - ipa_ntoh(addr); - ifa.prefix = ifa.brd = addr; - - /* It is either a host address or a peer address */ - if (ipa_equal(ifa.ip, addr)) - ifa.flags |= IA_HOST; - else - { - ifa.flags |= IA_PEER; - ifa.opposite = addr; - } - } - else - { - ip_addr netmask = ipa_mkmask(ifa.pxlen); - ifa.prefix = ipa_and(ifa.ip, netmask); - ifa.brd = ipa_or(ifa.ip, ipa_not(netmask)); - if (i->ifa_prefixlen == BITS_PER_IP_ADDRESS - 1) - ifa.opposite = ipa_opposite_m1(ifa.ip); - -#ifndef IPV6 - if (i->ifa_prefixlen == BITS_PER_IP_ADDRESS - 2) - ifa.opposite = ipa_opposite_m2(ifa.ip); - - if ((ifi->flags & IF_BROADCAST) && a[IFA_BROADCAST]) - { - ip_addr xbrd; - memcpy(&xbrd, RTA_DATA(a[IFA_BROADCAST]), sizeof(xbrd)); - ipa_ntoh(xbrd); - if (ipa_equal(xbrd, ifa.prefix) || ipa_equal(xbrd, ifa.brd)) - ifa.brd = xbrd; - else if (ifi->flags & IF_TMP_DOWN) /* Complain only during the first scan */ - log(L_ERR "KIF: Invalid broadcast address %I for %s", xbrd, ifi->name); - } -#endif - } - - scope = ipa_classify(ifa.ip); - if (scope < 0) - { - log(L_ERR "KIF: Invalid interface address %I for %s", ifa.ip, ifi->name); - return; - } - ifa.scope = scope & IADDR_SCOPE_MASK; - - DBG("KIF: IF%d(%s): %s IPA %I, flg %x, net %I/%d, brd %I, opp %I\n", - ifi->index, ifi->name, - new ? "added" : "removed", - ifa.ip, ifa.flags, ifa.prefix, ifa.pxlen, ifa.brd, ifa.opposite); - if (new) - ifa_update(&ifa); - else - ifa_delete(&ifa); -} - -void -kif_do_scan(struct kif_proto *p UNUSED) -{ - struct nlmsghdr *h; - - if_start_update(); - - nl_request_dump(RTM_GETLINK); - while (h = nl_get_scan()) - if (h->nlmsg_type == RTM_NEWLINK || h->nlmsg_type == RTM_DELLINK) - nl_parse_link(h, 1); - else - log(L_DEBUG "nl_scan_ifaces: Unknown packet received (type=%d)", h->nlmsg_type); - - nl_request_dump(RTM_GETADDR); - while (h = nl_get_scan()) - if (h->nlmsg_type == RTM_NEWADDR || h->nlmsg_type == RTM_DELADDR) - nl_parse_addr(h); - else - log(L_DEBUG "nl_scan_ifaces: Unknown packet received (type=%d)", h->nlmsg_type); - - if_end_update(); -} - -/* - * Routes - */ - -static struct krt_proto *nl_table_map[NL_NUM_TABLES]; - -int -krt_capable(rte *e) -{ - rta *a = e->attrs; - - if (a->cast != RTC_UNICAST) - return 0; - - switch (a->dest) - { - case RTD_ROUTER: - case RTD_DEVICE: - if (a->iface == NULL) - return 0; - case RTD_BLACKHOLE: - case RTD_UNREACHABLE: - case RTD_PROHIBIT: - case RTD_MULTIPATH: - break; - default: - return 0; - } - return 1; -} - -static inline int -nh_bufsize(struct mpnh *nh) -{ - int rv = 0; - for (; nh != NULL; nh = nh->next) - rv += RTNH_SIZE; - return rv; -} - -static int -nl_send_route(struct krt_proto *p, rte *e, struct ea_list *eattrs, int new) -{ - eattr *ea; - net *net = e->net; - rta *a = e->attrs; - struct { - struct nlmsghdr h; - struct rtmsg r; - char buf[128 + nh_bufsize(a->nexthops)]; - } r; - - DBG("nl_send_route(%I/%d,new=%d)\n", net->n.prefix, net->n.pxlen, new); - - bzero(&r.h, sizeof(r.h)); - bzero(&r.r, sizeof(r.r)); - r.h.nlmsg_type = new ? RTM_NEWROUTE : RTM_DELROUTE; - r.h.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)); - r.h.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | (new ? NLM_F_CREATE|NLM_F_EXCL : 0); - - r.r.rtm_family = BIRD_AF; - r.r.rtm_dst_len = net->n.pxlen; - r.r.rtm_tos = 0; - r.r.rtm_table = KRT_CF->sys.table_id; - r.r.rtm_protocol = RTPROT_BIRD; - r.r.rtm_scope = RT_SCOPE_UNIVERSE; - nl_add_attr_ipa(&r.h, sizeof(r), RTA_DST, net->n.prefix); - - u32 metric = 0; - if (new && e->attrs->source == RTS_INHERIT) - metric = e->u.krt.metric; - if (ea = ea_find(eattrs, EA_KRT_METRIC)) - metric = ea->u.data; - if (metric != 0) - nl_add_attr_u32(&r.h, sizeof(r), RTA_PRIORITY, metric); - - if (ea = ea_find(eattrs, EA_KRT_PREFSRC)) - nl_add_attr_ipa(&r.h, sizeof(r), RTA_PREFSRC, *(ip_addr *)ea->u.ptr->data); - - if (ea = ea_find(eattrs, EA_KRT_REALM)) - nl_add_attr_u32(&r.h, sizeof(r), RTA_FLOW, ea->u.data); - - /* a->iface != NULL checked in krt_capable() for router and device routes */ - - switch (a->dest) - { - case RTD_ROUTER: - r.r.rtm_type = RTN_UNICAST; - nl_add_attr_u32(&r.h, sizeof(r), RTA_OIF, a->iface->index); - nl_add_attr_ipa(&r.h, sizeof(r), RTA_GATEWAY, a->gw); - break; - case RTD_DEVICE: - r.r.rtm_type = RTN_UNICAST; - nl_add_attr_u32(&r.h, sizeof(r), RTA_OIF, a->iface->index); - break; - case RTD_BLACKHOLE: - r.r.rtm_type = RTN_BLACKHOLE; - break; - case RTD_UNREACHABLE: - r.r.rtm_type = RTN_UNREACHABLE; - break; - case RTD_PROHIBIT: - r.r.rtm_type = RTN_PROHIBIT; - break; - case RTD_MULTIPATH: - r.r.rtm_type = RTN_UNICAST; - nl_add_multipath(&r.h, sizeof(r), a->nexthops); - break; - default: - bug("krt_capable inconsistent with nl_send_route"); - } - - return nl_exchange(&r.h); -} - -void -krt_do_notify(struct krt_proto *p, net *n, rte *new, rte *old, struct ea_list *eattrs) -{ - int err = 0; - - /* - * NULL for eattr of the old route is a little hack, but we don't - * get proper eattrs for old in rt_notify() anyway. NULL means no - * extended route attributes and therefore matches if the kernel - * route has any of them. - */ - - if (old) - nl_send_route(p, old, NULL, 0); - - if (new) - err = nl_send_route(p, new, eattrs, 1); - - if (err < 0) - n->n.flags |= KRF_SYNC_ERROR; - else - n->n.flags &= ~KRF_SYNC_ERROR; -} - - -#define SKIP(ARG...) do { DBG("KRT: Ignoring route - " ARG); return; } while(0) - -static void -nl_parse_route(struct nlmsghdr *h, int scan) -{ - struct krt_proto *p; - struct rtmsg *i; - struct rtattr *a[RTA_CACHEINFO+1]; - int new = h->nlmsg_type == RTM_NEWROUTE; - - ip_addr dst = IPA_NONE; - u32 oif = ~0; - int src; - - if (!(i = nl_checkin(h, sizeof(*i))) || !nl_parse_attrs(RTM_RTA(i), a, sizeof(a))) - return; - if (i->rtm_family != BIRD_AF) - return; - if ((a[RTA_DST] && RTA_PAYLOAD(a[RTA_DST]) != sizeof(ip_addr)) || -#ifdef IPV6 - (a[RTA_IIF] && RTA_PAYLOAD(a[RTA_IIF]) != 4) || -#endif - (a[RTA_OIF] && RTA_PAYLOAD(a[RTA_OIF]) != 4) || - (a[RTA_GATEWAY] && RTA_PAYLOAD(a[RTA_GATEWAY]) != sizeof(ip_addr)) || - (a[RTA_PRIORITY] && RTA_PAYLOAD(a[RTA_PRIORITY]) != 4) || - (a[RTA_PREFSRC] && RTA_PAYLOAD(a[RTA_PREFSRC]) != sizeof(ip_addr)) || - (a[RTA_FLOW] && RTA_PAYLOAD(a[RTA_OIF]) != 4)) - { - log(L_ERR "KRT: Malformed message received"); - return; - } - - if (a[RTA_DST]) - { - memcpy(&dst, RTA_DATA(a[RTA_DST]), sizeof(dst)); - ipa_ntoh(dst); - } - - if (a[RTA_OIF]) - memcpy(&oif, RTA_DATA(a[RTA_OIF]), sizeof(oif)); - - p = nl_table_map[i->rtm_table]; /* Do we know this table? */ - DBG("KRT: Got %I/%d, type=%d, oif=%d, table=%d, prid=%d, proto=%s\n", dst, i->rtm_dst_len, i->rtm_type, oif, i->rtm_table, i->rtm_protocol, p ? p->p.name : "(none)"); - if (!p) - SKIP("unknown table %d\n", i->rtm_table); - - -#ifdef IPV6 - if (a[RTA_IIF]) - SKIP("IIF set\n"); -#else - if (i->rtm_tos != 0) /* We don't support TOS */ - SKIP("TOS %02x\n", i->rtm_tos); -#endif - - if (scan && !new) - SKIP("RTM_DELROUTE in scan\n"); - - int c = ipa_classify_net(dst); - if ((c < 0) || !(c & IADDR_HOST) || ((c & IADDR_SCOPE_MASK) <= SCOPE_LINK)) - SKIP("strange class/scope\n"); - - // ignore rtm_scope, it is not a real scope - // if (i->rtm_scope != RT_SCOPE_UNIVERSE) - // SKIP("scope %u\n", i->rtm_scope); - - switch (i->rtm_protocol) - { - case RTPROT_UNSPEC: - SKIP("proto unspec\n"); - - case RTPROT_REDIRECT: - src = KRT_SRC_REDIRECT; - break; - - case RTPROT_KERNEL: - src = KRT_SRC_KERNEL; - return; - - case RTPROT_BIRD: - if (!scan) - SKIP("echo\n"); - src = KRT_SRC_BIRD; - break; - - case RTPROT_BOOT: - default: - src = KRT_SRC_ALIEN; - } - - net *net = net_get(p->p.table, dst, i->rtm_dst_len); - - rta ra = { - .proto = &p->p, - .source = RTS_INHERIT, - .scope = SCOPE_UNIVERSE, - .cast = RTC_UNICAST - }; - - switch (i->rtm_type) - { - case RTN_UNICAST: - - if (a[RTA_MULTIPATH]) - { - ra.dest = RTD_MULTIPATH; - ra.nexthops = nl_parse_multipath(p, a[RTA_MULTIPATH]); - if (!ra.nexthops) - { - log(L_ERR "KRT: Received strange multipath route %I/%d", - net->n.prefix, net->n.pxlen); - return; - } - - break; - } - - ra.iface = if_find_by_index(oif); - if (!ra.iface) - { - log(L_ERR "KRT: Received route %I/%d with unknown ifindex %u", - net->n.prefix, net->n.pxlen, oif); - return; - } - - if (a[RTA_GATEWAY]) - { - neighbor *ng; - ra.dest = RTD_ROUTER; - memcpy(&ra.gw, RTA_DATA(a[RTA_GATEWAY]), sizeof(ra.gw)); - ipa_ntoh(ra.gw); - - /* Silently skip strange 6to4 routes */ - if (ipa_in_net(ra.gw, IPA_NONE, 96)) - return; - - ng = neigh_find2(&p->p, &ra.gw, ra.iface, - (i->rtm_flags & RTNH_F_ONLINK) ? NEF_ONLINK : 0); - if (!ng || (ng->scope == SCOPE_HOST)) - { - log(L_ERR "KRT: Received route %I/%d with strange next-hop %I", - net->n.prefix, net->n.pxlen, ra.gw); - return; - } - } - else - { - ra.dest = RTD_DEVICE; - - /* - * In Linux IPv6, 'native' device routes have proto - * RTPROT_BOOT and not RTPROT_KERNEL (which they have in - * IPv4 and which is expected). We cannot distinguish - * 'native' and user defined device routes, so we ignore all - * such device routes and for consistency, we have the same - * behavior in IPv4. Anyway, users should use RTPROT_STATIC - * for their 'alien' routes. - */ - - if (i->rtm_protocol == RTPROT_BOOT) - src = KRT_SRC_KERNEL; - } - - break; - case RTN_BLACKHOLE: - ra.dest = RTD_BLACKHOLE; - break; - case RTN_UNREACHABLE: - ra.dest = RTD_UNREACHABLE; - break; - case RTN_PROHIBIT: - ra.dest = RTD_PROHIBIT; - break; - /* FIXME: What about RTN_THROW? */ - default: - SKIP("type %d\n", i->rtm_type); - return; - } - - rte *e = rte_get_temp(&ra); - e->net = net; - e->u.krt.src = src; - e->u.krt.proto = i->rtm_protocol; - e->u.krt.type = i->rtm_type; - - if (a[RTA_PRIORITY]) - memcpy(&e->u.krt.metric, RTA_DATA(a[RTA_PRIORITY]), sizeof(e->u.krt.metric)); - else - e->u.krt.metric = 0; - - if (a[RTA_PREFSRC]) - { - ip_addr ps; - memcpy(&ps, RTA_DATA(a[RTA_PREFSRC]), sizeof(ps)); - ipa_ntoh(ps); - - ea_list *ea = alloca(sizeof(ea_list) + sizeof(eattr)); - ea->next = ra.eattrs; - ra.eattrs = ea; - ea->flags = EALF_SORTED; - ea->count = 1; - ea->attrs[0].id = EA_KRT_PREFSRC; - ea->attrs[0].flags = 0; - ea->attrs[0].type = EAF_TYPE_IP_ADDRESS; - ea->attrs[0].u.ptr = alloca(sizeof(struct adata) + sizeof(ps)); - ea->attrs[0].u.ptr->length = sizeof(ps); - memcpy(ea->attrs[0].u.ptr->data, &ps, sizeof(ps)); - } - - if (a[RTA_FLOW]) - { - ea_list *ea = alloca(sizeof(ea_list) + sizeof(eattr)); - ea->next = ra.eattrs; - ra.eattrs = ea; - ea->flags = EALF_SORTED; - ea->count = 1; - ea->attrs[0].id = EA_KRT_REALM; - ea->attrs[0].flags = 0; - ea->attrs[0].type = EAF_TYPE_INT; - memcpy(&ea->attrs[0].u.data, RTA_DATA(a[RTA_FLOW]), 4); - } - - if (scan) - krt_got_route(p, e); - else - krt_got_route_async(p, e, new); -} - -void -krt_do_scan(struct krt_proto *p UNUSED) /* CONFIG_ALL_TABLES_AT_ONCE => p is NULL */ -{ - struct nlmsghdr *h; - - nl_request_dump(RTM_GETROUTE); - while (h = nl_get_scan()) - if (h->nlmsg_type == RTM_NEWROUTE || h->nlmsg_type == RTM_DELROUTE) - nl_parse_route(h, 1); - else - log(L_DEBUG "nl_scan_fire: Unknown packet received (type=%d)", h->nlmsg_type); -} - -/* - * Asynchronous Netlink interface - */ - -static sock *nl_async_sk; /* BIRD socket for asynchronous notifications */ -static byte *nl_async_rx_buffer; /* Receive buffer */ - -static void -nl_async_msg(struct nlmsghdr *h) -{ - switch (h->nlmsg_type) - { - case RTM_NEWROUTE: - case RTM_DELROUTE: - DBG("KRT: Received async route notification (%d)\n", h->nlmsg_type); - nl_parse_route(h, 0); - break; - case RTM_NEWLINK: - case RTM_DELLINK: - DBG("KRT: Received async link notification (%d)\n", h->nlmsg_type); - nl_parse_link(h, 0); - break; - case RTM_NEWADDR: - case RTM_DELADDR: - DBG("KRT: Received async address notification (%d)\n", h->nlmsg_type); - nl_parse_addr(h); - break; - default: - DBG("KRT: Received unknown async notification (%d)\n", h->nlmsg_type); - } -} - -static int -nl_async_hook(sock *sk, int size UNUSED) -{ - struct iovec iov = { nl_async_rx_buffer, NL_RX_SIZE }; - struct sockaddr_nl sa; - struct msghdr m = { (struct sockaddr *) &sa, sizeof(sa), &iov, 1, NULL, 0, 0 }; - struct nlmsghdr *h; - int x; - unsigned int len; - - x = recvmsg(sk->fd, &m, 0); - if (x < 0) - { - if (errno == ENOBUFS) - { - /* - * Netlink reports some packets have been thrown away. - * One day we might react to it by asking for route table - * scan in near future. - */ - return 1; /* More data are likely to be ready */ - } - else if (errno != EWOULDBLOCK) - log(L_ERR "Netlink recvmsg: %m"); - return 0; - } - if (sa.nl_pid) /* It isn't from the kernel */ - { - DBG("Non-kernel packet\n"); - return 1; - } - h = (void *) nl_async_rx_buffer; - len = x; - if (m.msg_flags & MSG_TRUNC) - { - log(L_WARN "Netlink got truncated asynchronous message"); - return 1; - } - while (NLMSG_OK(h, len)) - { - nl_async_msg(h); - h = NLMSG_NEXT(h, len); - } - if (len) - log(L_WARN "nl_async_hook: Found packet remnant of size %d", len); - return 1; -} - -static void -nl_open_async(void) -{ - sock *sk; - struct sockaddr_nl sa; - int fd; - static int nl_open_tried = 0; - - if (nl_open_tried) - return; - nl_open_tried = 1; - - DBG("KRT: Opening async netlink socket\n"); - - fd = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE); - if (fd < 0) - { - log(L_ERR "Unable to open asynchronous rtnetlink socket: %m"); - return; - } - - bzero(&sa, sizeof(sa)); - sa.nl_family = AF_NETLINK; -#ifdef IPV6 - sa.nl_groups = RTMGRP_LINK | RTMGRP_IPV6_IFADDR | RTMGRP_IPV6_ROUTE; -#else - sa.nl_groups = RTMGRP_LINK | RTMGRP_IPV4_IFADDR | RTMGRP_IPV4_ROUTE; -#endif - if (bind(fd, (struct sockaddr *) &sa, sizeof(sa)) < 0) - { - log(L_ERR "Unable to bind asynchronous rtnetlink socket: %m"); - return; - } - - sk = nl_async_sk = sk_new(krt_pool); - sk->type = SK_MAGIC; - sk->rx_hook = nl_async_hook; - sk->fd = fd; - if (sk_open(sk)) - bug("Netlink: sk_open failed"); - - if (!nl_async_rx_buffer) - nl_async_rx_buffer = xmalloc(NL_RX_SIZE); -} - -/* - * Interface to the UNIX krt module - */ - -static u8 nl_cf_table[(NL_NUM_TABLES+7) / 8]; - -void -krt_sys_start(struct krt_proto *p, int first) -{ - nl_table_map[KRT_CF->sys.table_id] = p; - if (first) - { - nl_open(); - nl_open_async(); - } -} - -void -krt_sys_shutdown(struct krt_proto *p UNUSED, int last UNUSED) -{ -} - -int -krt_sys_reconfigure(struct krt_proto *p UNUSED, struct krt_config *n, struct krt_config *o) -{ - return n->sys.table_id == o->sys.table_id; -} - - -void -krt_sys_preconfig(struct config *c UNUSED) -{ - bzero(&nl_cf_table, sizeof(nl_cf_table)); -} - -void -krt_sys_postconfig(struct krt_config *x) -{ - int id = x->sys.table_id; - - if (nl_cf_table[id/8] & (1 << (id%8))) - cf_error("Multiple kernel syncers defined for table #%d", id); - nl_cf_table[id/8] |= (1 << (id%8)); -} - -void -krt_sys_init_config(struct krt_config *cf) -{ - cf->sys.table_id = RT_TABLE_MAIN; -} - -void -krt_sys_copy_config(struct krt_config *d, struct krt_config *s) -{ - d->sys.table_id = s->sys.table_id; -} - - - -void -kif_sys_start(struct kif_proto *p UNUSED) -{ - nl_open(); - nl_open_async(); -} - -void -kif_sys_shutdown(struct kif_proto *p UNUSED) -{ -} diff --git a/sysdep/linux/sysio.h b/sysdep/linux/sysio.h index bb522804..705a20ae 100644 --- a/sysdep/linux/sysio.h +++ b/sysdep/linux/sysio.h @@ -57,45 +57,6 @@ get_inaddr(ip_addr *a, struct in_addr *ia) ipa_ntoh(*a); } -/* - * Multicasting in Linux systems is a real mess. Not only different kernels - * have different interfaces, but also different libc's export it in different - * ways. Horrible. - */ - - -#if defined(CONFIG_LINUX_MC_MREQ) || defined(CONFIG_LINUX_MC_MREQ_BIND) -/* - * Older kernels support only struct mreq which matches interfaces by their - * addresses and thus fails on unnumbered devices. On newer 2.0 kernels - * we can use SO_BINDTODEVICE to circumvent this problem. - */ - -#define MREQ_IFA struct in_addr -#define MREQ_GRP struct ip_mreq -static inline void fill_mreq_ifa(struct in_addr *m, struct iface *ifa UNUSED, ip_addr saddr, ip_addr maddr UNUSED) -{ - set_inaddr(m, saddr); -} - -static inline void fill_mreq_grp(struct ip_mreq *m, struct iface *ifa, ip_addr saddr, ip_addr maddr) -{ - bzero(m, sizeof(*m)); -#ifdef CONFIG_LINUX_MC_MREQ_BIND - m->imr_interface.s_addr = INADDR_ANY; -#else - set_inaddr(&m->imr_interface, saddr); -#endif - set_inaddr(&m->imr_multiaddr, maddr); -} -#endif - - -#ifdef CONFIG_LINUX_MC_MREQN -/* - * 2.1 and newer kernels use struct mreqn which passes ifindex, so no - * problems with unnumbered devices. - */ #ifndef HAVE_STRUCT_IP_MREQN /* Several versions of glibc don't define this structure, so we have to do it ourselves */ @@ -107,24 +68,19 @@ struct ip_mreqn }; #endif -#define MREQ_IFA struct ip_mreqn -#define MREQ_GRP struct ip_mreqn -#define fill_mreq_ifa fill_mreq -#define fill_mreq_grp fill_mreq -static inline void fill_mreq(struct ip_mreqn *m, struct iface *ifa, ip_addr saddr, ip_addr maddr) +static inline void fill_mreqn(struct ip_mreqn *m, struct iface *ifa, ip_addr saddr, ip_addr maddr) { bzero(m, sizeof(*m)); m->imr_ifindex = ifa->index; set_inaddr(&m->imr_address, saddr); set_inaddr(&m->imr_multiaddr, maddr); } -#endif static inline char * sysio_setup_multicast(sock *s) { - MREQ_IFA m; + struct ip_mreqn m; int zero = 0; if (setsockopt(s->fd, SOL_IP, IP_MULTICAST_LOOP, &zero, sizeof(zero)) < 0) @@ -134,18 +90,15 @@ sysio_setup_multicast(sock *s) return "IP_MULTICAST_TTL"; /* This defines where should we send _outgoing_ multicasts */ - fill_mreq_ifa(&m, s->iface, s->saddr, IPA_NONE); + fill_mreqn(&m, s->iface, s->saddr, IPA_NONE); if (setsockopt(s->fd, SOL_IP, IP_MULTICAST_IF, &m, sizeof(m)) < 0) return "IP_MULTICAST_IF"; -#if defined(CONFIG_LINUX_MC_MREQ_BIND) || defined(CONFIG_LINUX_MC_MREQN) - { - struct ifreq ifr; - strcpy(ifr.ifr_name, s->iface->name); - if (setsockopt(s->fd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr)) < 0) - return "SO_BINDTODEVICE"; - } -#endif + /* Is this necessary? */ + struct ifreq ifr; + strcpy(ifr.ifr_name, s->iface->name); + if (setsockopt(s->fd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr)) < 0) + return "SO_BINDTODEVICE"; return NULL; } @@ -153,10 +106,10 @@ sysio_setup_multicast(sock *s) static inline char * sysio_join_group(sock *s, ip_addr maddr) { - MREQ_GRP m; + struct ip_mreqn m; /* And this one sets interface for _receiving_ multicasts from */ - fill_mreq_grp(&m, s->iface, s->saddr, maddr); + fill_mreqn(&m, s->iface, s->saddr, maddr); if (setsockopt(s->fd, SOL_IP, IP_ADD_MEMBERSHIP, &m, sizeof(m)) < 0) return "IP_ADD_MEMBERSHIP"; @@ -166,10 +119,10 @@ sysio_join_group(sock *s, ip_addr maddr) static inline char * sysio_leave_group(sock *s, ip_addr maddr) { - MREQ_GRP m; + struct ip_mreqn m; /* And this one sets interface for _receiving_ multicasts from */ - fill_mreq_grp(&m, s->iface, s->saddr, maddr); + fill_mreqn(&m, s->iface, s->saddr, maddr); if (setsockopt(s->fd, SOL_IP, IP_DROP_MEMBERSHIP, &m, sizeof(m)) < 0) return "IP_DROP_MEMBERSHIP"; diff --git a/sysdep/unix/Modules b/sysdep/unix/Modules index 2666f9d6..2c6514df 100644 --- a/sysdep/unix/Modules +++ b/sysdep/unix/Modules @@ -10,13 +10,3 @@ random.c krt.c krt.h krt.Y - -#ifdef CONFIG_UNIX_IFACE -krt-iface.c -krt-iface.h -#endif - -#ifdef CONFIG_UNIX_SET -krt-set.c -krt-set.h -#endif diff --git a/sysdep/unix/io.c b/sysdep/unix/io.c index 2dced67a..475d660c 100644 --- a/sysdep/unix/io.c +++ b/sysdep/unix/io.c @@ -950,7 +950,7 @@ int sk_join_group(sock *s, ip_addr maddr) { struct ipv6_mreq mreq; - + set_inaddr(&mreq.ipv6mr_multiaddr, maddr); #ifdef CONFIG_IPV6_GLIBC_20 diff --git a/sysdep/unix/krt-iface.c b/sysdep/unix/krt-iface.c deleted file mode 100644 index 88c17ecd..00000000 --- a/sysdep/unix/krt-iface.c +++ /dev/null @@ -1,228 +0,0 @@ -/* - * BIRD -- Unix Interface Scanning and Syncing - * - * (c) 1998--2000 Martin Mares <mj@ucw.cz> - * (c) 2004 Ondrej Filip <feela@network.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <net/if.h> -#include <sys/ioctl.h> -#include <errno.h> - -#undef LOCAL_DEBUG - -#include "nest/bird.h" -#include "nest/iface.h" -#include "nest/route.h" -#include "nest/protocol.h" -#include "lib/timer.h" -#include "lib/krt.h" -#include "lib/string.h" - -#include "unix.h" - -int if_scan_sock = -1; - -static void -scan_ifs(struct ifreq *r, int cnt) -{ - struct iface i, *pi; - struct ifa a; - char *err, *colon; - unsigned fl; - ip_addr netmask; - int l, scope; - sockaddr *sa; - - if_start_update(); - for (cnt /= sizeof(struct ifreq); cnt; cnt--, r++) - { - int sec = 0; - bzero(&i, sizeof(i)); - bzero(&a, sizeof(a)); - if (colon = strchr(r->ifr_name, ':')) - { - /* It's an alias -- let's interpret it as a secondary interface address */ - sec = 1; - *colon = 0; - } - strncpy(i.name, r->ifr_name, sizeof(i.name) - 1); - - if(ioctl(if_scan_sock, SIOCGIFADDR,r)<0) continue; - - get_sockaddr((struct sockaddr_in *) &r->ifr_addr, &a.ip, NULL, 1); - if (ipa_nonzero(a.ip)) - { - l = ipa_classify(a.ip); - if (l < 0 || !(l & IADDR_HOST)) - { - log(L_ERR "%s: Invalid interface address", i.name); - a.ip = IPA_NONE; - } - else - { - a.scope = l & IADDR_SCOPE_MASK; - if (a.scope == SCOPE_HOST) - i.flags |= IF_LOOPBACK | IF_IGNORE; - } - } - - if (ioctl(if_scan_sock, SIOCGIFFLAGS, r) < 0) - { - err = "SIOCGIFFLAGS"; - faulty: - log(L_ERR "%s(%s): %m", err, i.name); - bad: - i.flags = (i.flags & ~IF_ADMIN_UP) | IF_SHUTDOWN; - continue; - } - fl = r->ifr_flags; - if (fl & IFF_UP) - i.flags |= IF_ADMIN_UP; - - if (ioctl(if_scan_sock, SIOCGIFNETMASK, r) < 0) - { err = "SIOCGIFNETMASK"; goto faulty; } - get_sockaddr((struct sockaddr_in *) &r->ifr_addr, &netmask, NULL, 0); - l = ipa_mklen(netmask); - if (l < 0) - { - log(L_ERR "%s: Invalid netmask (%x)", i.name, netmask); - goto bad; - } - a.pxlen = l; - - if (fl & IFF_POINTOPOINT) - { - a.flags |= IA_PEER; - if (ioctl(if_scan_sock, SIOCGIFDSTADDR, r) < 0) - { err = "SIOCGIFDSTADDR"; goto faulty; } - get_sockaddr((struct sockaddr_in *) &r->ifr_addr, &a.opposite, NULL, 1); - a.prefix = a.opposite; - a.pxlen = BITS_PER_IP_ADDRESS; - } - else - a.prefix = ipa_and(a.ip, ipa_mkmask(a.pxlen)); - if (fl & IFF_LOOPBACK) - i.flags |= IF_LOOPBACK | IF_IGNORE; - if (1 -#ifndef CONFIG_ALL_MULTICAST - && (fl & IFF_MULTICAST) -#endif -#ifndef CONFIG_UNNUM_MULTICAST - && !(a.flags & IA_PEER) -#endif - ) - i.flags |= IF_MULTICAST; - - scope = ipa_classify(a.ip); - if (scope < 0) - { - log(L_ERR "%s: Invalid address", i.name); - goto bad; - } - a.scope = scope & IADDR_SCOPE_MASK; - - if (a.pxlen < 32) - { - a.brd = ipa_or(a.prefix, ipa_not(ipa_mkmask(a.pxlen))); - if (ipa_equal(a.ip, a.prefix) || ipa_equal(a.ip, a.brd)) - { - log(L_ERR "%s: Using network or broadcast address for interface", i.name); - goto bad; - } - if (fl & IFF_BROADCAST) - i.flags |= IF_BROADCAST; - if (a.pxlen < 30) - i.flags |= IF_MULTIACCESS; - if (a.pxlen == 30) - ifa.opposite = ipa_opposite_m2(ifa.ip); - if (a.pxlen == 31) - ifa.opposite = ipa_opposite_m1(ifa.ip); - } - else - a.brd = a.opposite; - a.scope = SCOPE_UNIVERSE; - - if (ioctl(if_scan_sock, SIOCGIFMTU, r) < 0) - { err = "SIOCGIFMTU"; goto faulty; } - i.mtu = r->ifr_mtu; - -#ifdef SIOCGIFINDEX - if (ioctl(if_scan_sock, SIOCGIFINDEX, r) >= 0) - i.index = r->ifr_ifindex; - else if (errno != EINVAL) - DBG("SIOCGIFINDEX failed: %m\n"); - else /* defined, but not supported by the kernel */ -#endif - /* - * The kernel doesn't give us real ifindices, but we still need them - * at least for OSPF unnumbered links. So let's make them up ourselves. - */ - if (pi = if_find_by_name(i.name)) - i.index = pi->index; - else - { - static int if_index_counter = 1; - i.index = if_index_counter++; - } - - pi = NULL; - if (sec) - { - a.flags |= IA_SECONDARY; - pi = if_find_by_index(i.index); - } - if (!pi) - pi = if_update(&i); - a.iface = pi; - ifa_update(&a); - } - if_end_update(); -} - -void -kif_do_scan(struct kif_proto *p) -{ - struct ifconf ic; - static int last_ifbuf_size = 4*sizeof(struct ifreq); - int res; - - for(;;) - { - ic.ifc_buf = alloca(last_ifbuf_size); - ic.ifc_len = last_ifbuf_size; - res = ioctl(if_scan_sock, SIOCGIFCONF, &ic); - if (res < 0 && errno != EFAULT) - die("SIOCCGIFCONF: %m"); - if (res >= 0 && ic.ifc_len <= last_ifbuf_size) - break; - last_ifbuf_size *= 2; - DBG("Increased ifconf buffer size to %d\n", last_ifbuf_size); - } - scan_ifs(ic.ifc_req, ic.ifc_len); -} - -void -kif_start(struct kif_proto *p) -{ -} - -void -kif_shutdown(struct kif_proto *p) -{ -} - -void -kif_io_init(void) -{ - if_scan_sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP); - DBG("Using socket %d for interface and route scanning\n", if_scan_sock); - if (if_scan_sock < 0) - die("Cannot create scanning socket: %m"); -} - diff --git a/sysdep/unix/krt-iface.h b/sysdep/unix/krt-iface.h deleted file mode 100644 index e9e8e507..00000000 --- a/sysdep/unix/krt-iface.h +++ /dev/null @@ -1,29 +0,0 @@ -/* - * BIRD -- Unix Kernel Interface Syncer - * - * (c) 1998--2000 Martin Mares <mj@ucw.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#ifndef _BIRD_KRT_IFACE_H_ -#define _BIRD_KRT_IFACE_H_ - -struct kif_params { -}; - -struct kif_status { -}; - -extern int if_scan_sock; - - -static inline void kif_sys_init(struct kif_proto *p UNUSED) { } -static inline int kif_sys_reconfigure(struct kif_proto *p UNUSED, struct kif_config *n UNUSED, struct kif_config *o UNUSED) { return 1; } - -static inline void kif_sys_preconfig(struct config *c UNUSED) { } -static inline void kif_sys_postconfig(struct kif_config *c UNUSED) { } -static inline void kif_sys_init_config(struct kif_config *c UNUSED) { } -static inline void kif_sys_copy_config(struct kif_config *d UNUSED, struct kif_config *s UNUSED) { } - -#endif diff --git a/sysdep/unix/krt-set.c b/sysdep/unix/krt-set.c deleted file mode 100644 index 252c5d3e..00000000 --- a/sysdep/unix/krt-set.c +++ /dev/null @@ -1,112 +0,0 @@ -/* - * BIRD -- Unix Routing Table Syncing - * - * (c) 1998--2000 Martin Mares <mj@ucw.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <sys/ioctl.h> -#include <net/route.h> - -#undef LOCAL_DEBUG - -#include "nest/bird.h" -#include "nest/iface.h" -#include "nest/route.h" -#include "nest/protocol.h" -#include "lib/unix.h" -#include "lib/krt.h" -#include "lib/string.h" - -int -krt_capable(rte *e) -{ - rta *a = e->attrs; - -#ifdef CONFIG_AUTO_ROUTES - if (a->source == RTS_DEVICE) - return 0; -#endif - return - a->cast == RTC_UNICAST && - (a->dest == RTD_ROUTER - || a->dest == RTD_DEVICE -#ifdef RTF_REJECT - || a->dest == RTD_UNREACHABLE -#endif - ); -} - -static void -krt_ioctl(int ioc, rte *e, char *name) -{ - net *net = e->net; - struct rtentry re; - rta *a = e->attrs; - - bzero(&re, sizeof(re)); - fill_in_sockaddr((struct sockaddr_in *) &re.rt_dst, net->n.prefix, 0); - fill_in_sockaddr((struct sockaddr_in *) &re.rt_genmask, ipa_mkmask(net->n.pxlen), 0); - re.rt_flags = RTF_UP; - if (net->n.pxlen == 32) - re.rt_flags |= RTF_HOST; - switch (a->dest) - { - case RTD_ROUTER: - fill_in_sockaddr((struct sockaddr_in *) &re.rt_gateway, a->gw, 0); - re.rt_flags |= RTF_GATEWAY; - break; - case RTD_DEVICE: - if (!a->iface) - return; - re.rt_dev = a->iface->name; - break; -#ifdef RTF_REJECT - case RTD_UNREACHABLE: - re.rt_flags |= RTF_REJECT; - break; -#endif - default: - bug("krt set: unknown flags, but not filtered"); - } - - if (ioctl(if_scan_sock, ioc, &re) < 0) - log(L_ERR "%s(%I/%d): %m", name, net->n.prefix, net->n.pxlen); -} - -void -krt_do_notify(struct krt_proto *p, net *net, rte *new, rte *old) -{ - if (old) - { - DBG("krt_remove_route(%I/%d)\n", net->n.prefix, net->n.pxlen); - krt_ioctl(SIOCDELRT, old, "SIOCDELRT"); - } - if (new) - { - DBG("krt_add_route(%I/%d)\n", net->n.prefix, net->n.pxlen); - krt_ioctl(SIOCADDRT, new, "SIOCADDRT"); - } -} - -void -krt_sys_start(struct krt_proto *x, int first) -{ - if (if_scan_sock < 0) - bug("krt set: missing socket"); -} - -void -krt_sys_shutdown(struct krt_proto *x, int last) -{ -} - -void -krt_sys_construct(struct krt_config *c) -{ -} - diff --git a/sysdep/unix/krt-set.h b/sysdep/unix/krt-set.h deleted file mode 100644 index 8ef3170e..00000000 --- a/sysdep/unix/krt-set.h +++ /dev/null @@ -1,27 +0,0 @@ -/* - * BIRD -- Unix Kernel Route Syncer - * - * (c) 1998--2000 Martin Mares <mj@ucw.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#ifndef _BIRD_KRT_SET_H_ -#define _BIRD_KRT_SET_H_ - -struct krt_params { -}; - -struct krt_status { -}; - - -static inline void krt_sys_init(struct krt_proto *p UNUSED) { } -static inline int krt_sys_reconfigure(struct krt_proto *p UNUSED, struct krt_config *n UNUSED, struct krt_config *o UNUSED) { return 1; } - -static inline void krt_sys_preconfig(struct config *c UNUSED) { } -static inline void krt_sys_postconfig(struct krt_config *c UNUSED) { } -static inline void krt_sys_init_config(struct krt_config *c UNUSED) { } -static inline void krt_sys_copy_config(struct krt_config *d UNUSED, struct krt_config *s UNUSED) { } - -#endif diff --git a/sysdep/unix/krt.c b/sysdep/unix/krt.c index cc03bb88..b0d22227 100644 --- a/sysdep/unix/krt.c +++ b/sysdep/unix/krt.c @@ -23,7 +23,7 @@ * Either with a single routing table and single KRT protocol [traditional UNIX] * or with many routing tables and separate KRT protocols for all of them * or with many routing tables, but every scan including all tables, so we start - * separate KRT protocols which cooperate with each other [Linux 2.2]. + * separate KRT protocols which cooperate with each other [Linux]. * In this case, we keep only a single scan timer. * * We use FIB node flags in the routing table to keep track of route @@ -34,6 +34,15 @@ * When starting up, we cheat by looking if there is another * KRT instance to be initialized later and performing table scan * only once for all the instances. + * + * The code uses OS-dependent parts for kernel updates and scans. These parts are + * in more specific sysdep directories (e.g. sysdep/linux) in functions krt_sys_* + * and kif_sys_* (and some others like krt_do_notify()) and krt-sys.h header file. + * This is also used for platform specific protocol options and route attributes. + * + * There was also an old code that used traditional UNIX ioctls for these tasks. + * It was unmaintained and later removed. For reference, see sysdep/krt-* files + * in commit 396dfa9042305f62da1f56589c4b98fac57fc2f6 */ /* @@ -66,7 +75,6 @@ krt_io_init(void) { krt_pool = rp_new(&root_pool, "Kernel Syncer"); krt_filter_lp = lp_new(krt_pool, 4080); - kif_sys_io_init(); } /* diff --git a/sysdep/unix/krt.h b/sysdep/unix/krt.h index a3b5658a..9d5639f2 100644 --- a/sysdep/unix/krt.h +++ b/sysdep/unix/krt.h @@ -15,9 +15,7 @@ struct krt_proto; struct kif_config; struct kif_proto; -#include "lib/krt-scan.h" -#include "lib/krt-set.h" -#include "lib/krt-iface.h" +#include "lib/krt-sys.h" /* Flags stored in net->n.flags, rest are in nest/route.h */ @@ -113,7 +111,7 @@ struct kif_proto { struct proto_config * krt_init_config(int class); -/* krt-scan.c */ +/* krt sysdep */ void krt_sys_init(struct krt_proto *); void krt_sys_start(struct krt_proto *, int); @@ -130,7 +128,7 @@ void krt_do_scan(struct krt_proto *); void krt_do_notify(struct krt_proto *p, net *n, rte *new, rte *old, struct ea_list *eattrs); -/* krt-iface.c */ +/* kif sysdep */ void kif_sys_init(struct kif_proto *); void kif_sys_start(struct kif_proto *); @@ -142,6 +140,5 @@ void kif_sys_copy_config(struct kif_config *, struct kif_config *); void kif_do_scan(struct kif_proto *); -// void kif_sys_io_init(void); #endif |