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-rw-r--r--zebra/ChangeLog24
-rw-r--r--zebra/kernel_socket.c242
-rw-r--r--zebra/rt_socket.c4
3 files changed, 177 insertions, 93 deletions
diff --git a/zebra/ChangeLog b/zebra/ChangeLog
index dfd1df4c..f943d655 100644
--- a/zebra/ChangeLog
+++ b/zebra/ChangeLog
@@ -1,3 +1,27 @@
+2005-11-12 Alexander Gall <gall@switch.ch>
+
+ * See [quagga-dev 1815]
+ * kernel_socket.c: (rtm_write) Use SAROUNDUP when HAVE_SIN_LEN
+ is not available.
+ * rt_socket.c: (kernel_rtm_ipv6(_multipath)) set family to
+ AF_INET6 on ipv6 routes.
+
+2005-11-12 Paul Jakma <paul.jakma@sun.com>
+
+ * kernel_socket.c: Add RTA_NAME_GET macro to extract name from
+ sockaddr_dl. Add some more RTF_ flags.
+ * (ifan_read) Add some debug messages.
+ * (ifm_read) Add more debug messages. More robust cross-checks
+ of index against name.
+ Fall back to by-name lookup if the index lookup fails, future
+ proofing more than anything else.
+ (ifam_read_mesg) Read RTA_IFP. Add debug messages.
+ (ifam_read) More debug. If there's an RTA_IFP and it isn't
+ the name of the interface, save it as the label.
+ (rtm_read_mesg) Read RTA_IFP.
+ (rtm_read) allow name to be retrieved.
+ (rtmsg_debug) expand on the debug message.
+
2005-11-11 Paul Jakma <paul.jakma@sun.com>
* kernel_socket.c: (ifm_read) arithmetic on void pointer
diff --git a/zebra/kernel_socket.c b/zebra/kernel_socket.c
index b1b143ee..b4643dca 100644
--- a/zebra/kernel_socket.c
+++ b/zebra/kernel_socket.c
@@ -83,7 +83,7 @@ extern struct zebra_t zebrad;
int len = SAROUNDUP ((PNT)); \
if ( ((DEST) != NULL) && \
af_check (((struct sockaddr *)(PNT))->sa_family)) \
- memcpy ((caddr_t)(DEST), (PNT), len); \
+ memcpy ((DEST), (PNT), len); \
(PNT) += len; \
}
#define RTA_ATTR_GET(DEST, RTA, RTMADDRS, PNT) \
@@ -91,10 +91,31 @@ extern struct zebra_t zebrad;
{ \
int len = SAROUNDUP ((PNT)); \
if ( ((DEST) != NULL) ) \
- memcpy ((caddr_t)(DEST), (PNT), len); \
+ memcpy ((DEST), (PNT), len); \
(PNT) += len; \
}
+#define RTA_NAME_GET(DEST, RTA, RTMADDRS, PNT, LEN) \
+ if ((RTMADDRS) & (RTA)) \
+ { \
+ int len = SAROUNDUP ((PNT)); \
+ struct sockaddr_dl *sdl = (struct sockaddr_dl *)(PNT); \
+ if (IS_ZEBRA_DEBUG_KERNEL) \
+ zlog_debug ("%s: RTA_SDL_GET nlen %d, alen %d", \
+ __func__, sdl->sdl_nlen, sdl->sdl_alen); \
+ if ( ((DEST) != NULL) && (sdl->sdl_family == AF_LINK) \
+ && (sdl->sdl_nlen < IFNAMSIZ) && (sdl->sdl_nlen <= len) ) \
+ { \
+ memcpy ((DEST), sdl->sdl_data, sdl->sdl_nlen); \
+ (DEST)[sdl->sdl_nlen] = '\0'; \
+ (LEN) = sdl->sdl_nlen; \
+ } \
+ (PNT) += len; \
+ } \
+ else \
+ { \
+ (LEN) = 0; \
+ }
/* Routing socket message types. */
struct message rtm_type_str[] =
{
@@ -144,6 +165,9 @@ struct message rtm_flag_str[] =
{RTF_LLINFO, "LLINFO"},
{RTF_STATIC, "STATIC"},
{RTF_BLACKHOLE, "BLACKHOLE"},
+#ifdef RTF_PRIVATE
+ {RTF_PRIVATE, "PRIVATE"},
+#endif /* RTF_PRIVATE */
{RTF_PROTO1, "PROTO1"},
{RTF_PROTO2, "PROTO2"},
#ifdef RTF_PRCLONING
@@ -167,6 +191,12 @@ struct message rtm_flag_str[] =
#ifdef RTF_MULTICAST
{RTF_MULTICAST, "MULTICAST"},
#endif /* RTF_MULTICAST */
+#ifdef RTF_MULTIRT
+ {RTF_MULTIRT, "MULTIRT"},
+#endif /* RTF_MULTIRT */
+#ifdef RTF_SETSRC
+ {RTF_SETSRC, "SETSRC"},
+#endif /* RTF_SETSRC */
{0, NULL}
};
@@ -214,10 +244,20 @@ int
ifan_read (struct if_announcemsghdr *ifan)
{
struct interface *ifp;
-
+
ifp = if_lookup_by_index (ifan->ifan_index);
- if (ifp == NULL && ifan->ifan_what == IFAN_ARRIVAL)
+
+ if (ifp)
+ assert ( (ifp->ifindex == ifan->ifan_index)
+ || (ifp->ifindex == IFINDEX_INTERNAL) );
+
+ if ( (ifp == NULL || (ifp->ifindex == IFINDEX_INTERNAL)
+ && ifan->ifan_what == IFAN_ARRIVAL)
{
+ if (IS_ZEBRA_DEBUG_KERNEL)
+ zlog_debug ("%s: creating interface for ifindex %d, name %s",
+ __func__, ifan->ifan_index, ifan->ifan_name);
+
/* Create Interface */
ifp = if_get_by_name_len(ifan->ifan_name,
strnlen(ifan->ifan_name,
@@ -234,7 +274,8 @@ ifan_read (struct if_announcemsghdr *ifan)
if_get_metric (ifp);
if (IS_ZEBRA_DEBUG_KERNEL)
- zlog_debug ("interface %s index %d", ifp->name, ifp->ifindex);
+ zlog_debug ("%s: interface %s index %d",
+ __func__, ifan->ifan_name, ifan->ifan_index);
return 0;
}
@@ -249,10 +290,13 @@ int
ifm_read (struct if_msghdr *ifm)
{
struct interface *ifp = NULL;
- struct sockaddr_dl *sdl = NULL;
+ char ifname[IFNAMSIZ];
+ short ifnlen = 0;
caddr_t *cp;
- unsigned int i;
-
+
+ /* terminate ifname at head (for strnlen) and tail (for safety) */
+ ifname[IFNAMSIZ - 1] = '\0';
+
/* paranoia: sanity check structure */
if (ifm->ifm_msglen < sizeof(struct if_msghdr))
{
@@ -279,68 +323,56 @@ ifm_read (struct if_msghdr *ifm)
cp = cp + 12;
#endif
+ RTA_ADDR_GET (NULL, RTA_DST, ifm->ifm_addrs, cp);
+ RTA_ADDR_GET (NULL, RTA_GATEWAY, ifm->ifm_addrs, cp);
+ RTA_ATTR_GET (NULL, RTA_NETMASK, ifm->ifm_addrs, cp);
+ RTA_ADDR_GET (NULL, RTA_GENMASK, ifm->ifm_addrs, cp);
+ RTA_NAME_GET (ifname, RTA_IFP, ifm->ifm_addrs, cp, ifnlen);
+ RTA_ADDR_GET (NULL, RTA_IFA, ifm->ifm_addrs, cp);
+ RTA_ADDR_GET (NULL, RTA_AUTHOR, ifm->ifm_addrs, cp);
+ RTA_ADDR_GET (NULL, RTA_BRD, ifm->ifm_addrs, cp);
+
+ if (IS_ZEBRA_DEBUG_KERNEL)
+ zlog_debug ("%s: sdl ifname %s", __func__, (ifnlen ? ifname : "(nil)"));
+
/*
- * Check for each sockaddr in turn, advancing over it. After this
- * loop, sdl should point to a sockaddr_dl iff one was present.
+ * Look up on ifindex first, because ifindices are the primary handle for
+ * interfaces across the user/kernel boundary, for most systems. (Some
+ * messages, such as up/down status changes on NetBSD, do not include a
+ * sockaddr_dl).
*/
- for (i = 1; i != 0; i <<= 1)
+ if ( (ifp = if_lookup_by_index (ifm->ifm_index)) != NULL )
{
- if (i & ifm->ifm_addrs)
+ /* we have an ifp, verify that the name matches as some systems,
+ * eg Solaris, have a 1:many association of ifindex:ifname
+ * if they dont match, we dont have the correct ifp and should
+ * set it back to NULL to let next check do lookup by name
+ */
+ if (ifnlen && (strncmp (ifp->name, ifname, IFNAMSIZ) != 0) )
{
- if (i == RTA_IFP)
- {
- sdl = (struct sockaddr_dl *)cp;
- break;
- }
- /* XXX warning: pointer of type `void *' used in arithmetic */
- cp += SAROUNDUP(cp);
+ if (IS_ZEBRA_DEBUG_KERNEL)
+ zlog_debug ("%s: ifp name %s doesnt match sdl name %s",
+ __func__, ifp->name, ifname);
+ ifp = NULL;
}
}
-
- /* Ensure that sdl, if present, is actually a sockaddr_dl. */
- if (sdl != NULL && sdl->sdl_family != AF_LINK)
- {
- zlog_err ("ifm_read: sockaddr_dl bad AF %d\n",
- sdl->sdl_family);
- return -1;
- }
-
+
/*
- * Look up on ifindex first, because ifindices are the primary
- * handle for interfaces across the user/kernel boundary. (Some
- * messages, such as up/down status changes on NetBSD, do not
- * include a sockaddr_dl).
+ * If we dont have an ifp, try looking up by name. Particularly as some
+ * systems (Solaris) have a 1:many mapping of ifindex:ifname - the ifname
+ * is therefore our unique handle to that interface.
+ *
+ * Interfaces specified in the configuration file for which the ifindex
+ * has not been determined will have ifindex == IFINDEX_INTERNAL, and such
+ * interfaces are found by this search, and then their ifindex values can
+ * be filled in.
*/
- ifp = if_lookup_by_index (ifm->ifm_index);
-
- /*
- * If lookup by index was unsuccessful and we have a name, try
- * looking up by name. Interfaces specified in the configuration
- * file for which the ifindex has not been determined will have
- * ifindex == IFINDEX_INTERNAL, and such interfaces are found by this search,
- * and then their ifindex values can be filled in.
- */
- if (ifp == NULL && sdl != NULL)
- {
- /*
- * paranoia: sanity check name length. nlen does not include
- * trailing zero, but IFNAMSIZ max length does.
- *
- * XXX Is this test correct? Should it be '>=' or '>'? And is it even
- * necessary now that we are using if_lookup_by_name_len?
- */
- if (sdl->sdl_nlen >= IFNAMSIZ)
- {
- zlog_err ("ifm_read: illegal sdl_nlen %d\n", sdl->sdl_nlen);
- return -1;
- }
-
- ifp = if_lookup_by_name_len (sdl->sdl_data, sdl->sdl_nlen);
- }
+ if ( (ifp == NULL) && ifnlen)
+ ifp = if_lookup_by_name (ifname);
/*
- * If ifp does not exist or has an invalid index (IFINDEX_INTERNAL), create or
- * fill in an interface.
+ * If ifp still does not exist or has an invalid index (IFINDEX_INTERNAL),
+ * create or fill in an interface.
*/
if ((ifp == NULL) || (ifp->ifindex == IFINDEX_INTERNAL))
{
@@ -348,17 +380,25 @@ ifm_read (struct if_msghdr *ifm)
* To create or fill in an interface, a sockaddr_dl (via
* RTA_IFP) is required.
*/
- if (sdl == NULL)
+ if (!ifnlen)
{
- zlog_warn ("Interface index %d (new) missing RTA_IFP sockaddr_dl\n",
+ zlog_warn ("Interface index %d (new) missing ifname\n",
ifm->ifm_index);
return -1;
}
-
+
if (ifp == NULL)
- /* Interface that zebra was not previously aware of, so create. */
- ifp = if_create (sdl->sdl_data, sdl->sdl_nlen);
+ {
+ /* Interface that zebra was not previously aware of, so create. */
+ ifp = if_create (ifname, ifnlen);
+ if (IS_ZEBRA_DEBUG_KERNEL)
+ zlog_debug ("%s: creating ifp for ifindex %d",
+ __func__, ifm->ifm_index);
+ }
+ if (IS_ZEBRA_DEBUG_KERNEL)
+ zlog_debug ("%s: updated/created ifp, ifname %s, ifindex %d",
+ __func__, ifp->name, ifp->ifindex);
/*
* Fill in newly created interface structure, or larval
* structure with ifindex IFINDEX_INTERNAL.
@@ -372,13 +412,6 @@ ifm_read (struct if_msghdr *ifm)
#endif /* __bsdi__ */
if_get_metric (ifp);
- /*
- * XXX sockaddr_dl contents can be larger than the structure
- * definition, so the user of the stored structure must be
- * careful not to read off the end.
- */
- memcpy (&ifp->sdl, sdl, sizeof (struct sockaddr_dl));
-
if_add_update (ifp);
}
else
@@ -390,6 +423,14 @@ ifm_read (struct if_msghdr *ifm)
* but apparently do not trigger action.)
*/
{
+ if (ifp->ifindex != ifm->ifm_index)
+ {
+ zlog_warn ("%s: index mismatch, ifname %s, ifp index %d, "
+ "ifm index %d",
+ __func__, ifp->name, ifp->ifindex, ifm->ifm_index);
+ return -1;
+ }
+
if (if_is_up (ifp))
{
ifp->flags = ifm->ifm_flags;
@@ -423,7 +464,8 @@ ifm_read (struct if_msghdr *ifm)
#endif /* HAVE_NET_RT_IFLIST */
if (IS_ZEBRA_DEBUG_KERNEL)
- zlog_debug ("interface %s index %d", ifp->name, ifp->ifindex);
+ zlog_debug ("%s: interface %s index %d",
+ __func__, ifp->name, ifp->ifindex);
return 0;
}
@@ -433,7 +475,9 @@ void
ifam_read_mesg (struct ifa_msghdr *ifm,
union sockunion *addr,
union sockunion *mask,
- union sockunion *dest)
+ union sockunion *brd,
+ char *ifname,
+ short *ifnlen)
{
caddr_t pnt, end;
@@ -450,11 +494,16 @@ ifam_read_mesg (struct ifa_msghdr *ifm,
RTA_ADDR_GET (NULL, RTA_GATEWAY, ifm->ifam_addrs, pnt);
RTA_ATTR_GET (mask, RTA_NETMASK, ifm->ifam_addrs, pnt);
RTA_ADDR_GET (NULL, RTA_GENMASK, ifm->ifam_addrs, pnt);
- RTA_ADDR_GET (NULL, RTA_IFP, ifm->ifam_addrs, pnt);
+ RTA_NAME_GET (ifname, RTA_IFP, ifm->ifam_addrs, pnt, *ifnlen);
RTA_ADDR_GET (addr, RTA_IFA, ifm->ifam_addrs, pnt);
RTA_ADDR_GET (NULL, RTA_AUTHOR, ifm->ifam_addrs, pnt);
- RTA_ADDR_GET (dest, RTA_BRD, ifm->ifam_addrs, pnt);
+ RTA_ADDR_GET (brd, RTA_BRD, ifm->ifam_addrs, pnt);
+ if (IS_ZEBRA_DEBUG_KERNEL)
+ zlog_debug ("%s: ifindex %d, ifname %s, ifam_addrs 0x%x",
+ __func__, ifm->ifam_index,
+ (ifnlen ? ifname : "(nil)"), ifm->ifam_addrs);
+
/* Assert read up end point matches to end point */
if (pnt != end)
zlog_warn ("ifam_read() does't read all socket data");
@@ -464,20 +513,27 @@ ifam_read_mesg (struct ifa_msghdr *ifm,
int
ifam_read (struct ifa_msghdr *ifam)
{
- struct interface *ifp;
+ struct interface *ifp = NULL;
union sockunion addr, mask, brd;
-
- /* Check does this interface exist or not. */
- ifp = if_lookup_by_index (ifam->ifam_index);
- if (ifp == NULL)
+ char ifname[INTERFACE_NAMSIZ];
+ short ifnlen = 0;
+ char isalias = 0;
+
+ ifname[0] = ifname[INTERFACE_NAMSIZ - 1] = '\0';
+
+ /* Allocate and read address information. */
+ ifam_read_mesg (ifam, &addr, &mask, &brd, ifname, &ifnlen);
+
+ if ((ifp = if_lookup_by_index(ifam->ifam_index)) == NULL)
{
- zlog_warn ("no interface for index %d", ifam->ifam_index);
+ zlog_warn ("%s: no interface for ifname %s, index %d",
+ __func__, ifname, ifam->ifam_index);
return -1;
}
-
- /* Allocate and read address information. */
- ifam_read_mesg (ifam, &addr, &mask, &brd);
-
+
+ if (ifnlen && strncmp (ifp->name, ifname, INTERFACE_NAMSIZ))
+ isalias = 1;
+
/* Check interface flag for implicit up of the interface. */
if_refresh (ifp);
@@ -525,7 +581,9 @@ int
rtm_read_mesg (struct rt_msghdr *rtm,
union sockunion *dest,
union sockunion *mask,
- union sockunion *gate)
+ union sockunion *gate,
+ char *ifname,
+ short *ifnlen)
{
caddr_t pnt, end;
@@ -549,7 +607,7 @@ rtm_read_mesg (struct rt_msghdr *rtm,
RTA_ADDR_GET (gate, RTA_GATEWAY, rtm->rtm_addrs, pnt);
RTA_ATTR_GET (mask, RTA_NETMASK, rtm->rtm_addrs, pnt);
RTA_ADDR_GET (NULL, RTA_GENMASK, rtm->rtm_addrs, pnt);
- RTA_ADDR_GET (NULL, RTA_IFP, rtm->rtm_addrs, pnt);
+ RTA_NAME_GET (ifname, RTA_IFP, rtm->rtm_addrs, pnt, *ifnlen);
RTA_ADDR_GET (NULL, RTA_IFA, rtm->rtm_addrs, pnt);
RTA_ADDR_GET (NULL, RTA_AUTHOR, rtm->rtm_addrs, pnt);
RTA_ADDR_GET (NULL, RTA_BRD, rtm->rtm_addrs, pnt);
@@ -572,6 +630,8 @@ rtm_read (struct rt_msghdr *rtm)
int flags;
u_char zebra_flags;
union sockunion dest, mask, gate;
+ char ifname[INTERFACE_NAMSIZ + 1];
+ short ifnlen = 0;
zebra_flags = 0;
@@ -582,7 +642,7 @@ rtm_read (struct rt_msghdr *rtm)
/* Read destination and netmask and gateway from rtm message
structure. */
- flags = rtm_read_mesg (rtm, &dest, &mask, &gate);
+ flags = rtm_read_mesg (rtm, &dest, &mask, &gate, ifname, &ifnlen);
#ifdef RTF_CLONED /*bsdi, netbsd 1.6*/
if (flags & RTF_CLONED)
@@ -790,7 +850,7 @@ rtm_write (int message,
#define SOCKADDRSET(X,R) \
if (msg.rtm.rtm_addrs & (R)) \
{ \
- int len = ROUNDUP (sizeof((X)->sa)); \
+ int len = SAROUNDUP (X); \
memcpy (pnt, (caddr_t)(X), len); \
pnt += len; \
}
@@ -841,7 +901,7 @@ rtmsg_debug (struct rt_msghdr *rtm)
zlog_debug ("Kernel: Len: %d Type: %s", rtm->rtm_msglen, type);
rtm_flag_dump (rtm->rtm_flags);
zlog_debug ("Kernel: message seq %d", rtm->rtm_seq);
- zlog_debug ("Kernel: pid %d", rtm->rtm_pid);
+ zlog_debug ("Kernel: pid %d, rtm_addrs 0x%x", rtm->rtm_pid, rtm->rtm_addrs);
}
/* This is pretty gross, better suggestions welcome -- mhandler */
diff --git a/zebra/rt_socket.c b/zebra/rt_socket.c
index f447d8ca..fa2f172c 100644
--- a/zebra/rt_socket.c
+++ b/zebra/rt_socket.c
@@ -290,7 +290,7 @@ kernel_rtm_ipv6 (int message, struct prefix_ipv6 *dest,
else
{
masklen2ip6 (dest->prefixlen, &sin_mask.sin6_addr);
- sin_mask.sin6_family = AF_UNSPEC;
+ sin_mask.sin6_family = AF_INET6;
#ifdef SIN6_LEN
sin_mask.sin6_len = sin6_masklen (sin_mask.sin6_addr);
#endif /* SIN6_LEN */
@@ -400,7 +400,7 @@ kernel_rtm_ipv6_multipath (int cmd, struct prefix *p, struct rib *rib,
else
{
masklen2ip6 (p->prefixlen, &sin_mask.sin6_addr);
- sin_mask.sin6_family = AF_UNSPEC;
+ sin_mask.sin6_family = AF_INET6;
#ifdef SIN6_LEN
sin_mask.sin6_len = sin6_masklen (sin_mask.sin6_addr);
#endif /* SIN6_LEN */
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-26 20:04:43 +0000