ppp: - fix multilink ppp with custom ifnames, patch by George Kashperko <george@znau.edu.ua> - refresh patches
SVN-Revision: 34171master
Jo-Philipp Wich
12 years ago
parent
a8c492dbb3
commit
db207e2a87
@ -0,0 +1,146 @@ |
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From: George Kashperko <george@znau.edu.ua>
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Make mlppp support more generic interface naming other than pppX
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Signed-off-by: George Kashperko <george@znau.edu.ua>
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---
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pppd/multilink.c | 55 +++++++++++++++++++++++++++++++++------------
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pppd/sys-linux.c | 12 +++++++++
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2 files changed, 53 insertions(+), 14 deletions(-)
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--- a/pppd/multilink.c
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+++ b/pppd/multilink.c
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@@ -56,7 +56,8 @@ static void iterate_bundle_links __P((vo
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static int get_default_epdisc __P((struct epdisc *));
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static int parse_num __P((char *str, const char *key, int *valp));
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-static int owns_unit __P((TDB_DATA pid, int unit));
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+static int parse_str __P((char *str, const char *key, char *buf, int buflen));
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+static int owns_link __P((TDB_DATA pid, char *ifname));
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#define set_ip_epdisc(ep, addr) do { \
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ep->length = 4; \
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@@ -197,35 +198,38 @@ mp_join_bundle()
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key.dptr = bundle_id;
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key.dsize = p - bundle_id;
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pid = tdb_fetch(pppdb, key);
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+
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if (pid.dptr != NULL) {
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+ char tmp[IFNAMSIZ];
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+
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/* bundle ID exists, see if the pppd record exists */
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rec = tdb_fetch(pppdb, pid);
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+
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if (rec.dptr != NULL && rec.dsize > 0) {
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/* make sure the string is null-terminated */
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rec.dptr[rec.dsize-1] = 0;
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- /* parse the interface number */
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- parse_num(rec.dptr, "IFNAME=ppp", &unit);
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+
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/* check the pid value */
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if (!parse_num(rec.dptr, "PPPD_PID=", &pppd_pid)
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+ || !parse_str(rec.dptr, "IFNAME=", tmp, sizeof(tmp))
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+ || !parse_num(rec.dptr, "IFUNIT=", &unit)
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|| !process_exists(pppd_pid)
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- || !owns_unit(pid, unit))
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+ || !owns_link(pid, tmp))
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unit = -1;
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free(rec.dptr);
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}
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free(pid.dptr);
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- }
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- if (unit >= 0) {
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/* attach to existing unit */
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- if (bundle_attach(unit)) {
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+ if (unit >= 0 && bundle_attach(unit)) {
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set_ifunit(0);
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script_setenv("BUNDLE", bundle_id + 7, 0);
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make_bundle_links(1);
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unlock_db();
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- info("Link attached to %s", ifname);
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+ info("Link attached to %s", tmp);
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return 1;
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+ /* attach failed because bundle doesn't exist */
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}
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- /* attach failed because bundle doesn't exist */
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}
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/* we have to make a new bundle */
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@@ -408,22 +412,45 @@ parse_num(str, key, valp)
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return 0;
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}
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+static int
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+parse_str(str, key, buf, buflen)
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+ char *str;
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+ const char *key;
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+ char *buf;
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+ int buflen;
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+{
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+ char *p, *endp;
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+ int i;
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+
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+ p = strstr(str, key);
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+ if (p) {
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+ p += strlen(key);
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+ while (--buflen && *p != 0 && *p != ';')
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+ *(buf++) = *(p++);
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+ *buf = 0;
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+ return 1;
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+ }
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+ return 0;
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+}
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+
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/*
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- * Check whether the pppd identified by `key' still owns ppp unit `unit'.
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+ * Check whether the pppd identified by `key' still owns ppp link `ifname'.
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*/
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static int
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-owns_unit(key, unit)
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+owns_link(key, ifname)
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TDB_DATA key;
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- int unit;
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+ char *ifname;
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{
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- char ifkey[32];
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+ char ifkey[7 + IFNAMSIZ];
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TDB_DATA kd, vd;
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int ret = 0;
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- slprintf(ifkey, sizeof(ifkey), "IFNAME=ppp%d", unit);
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+ slprintf(ifkey, sizeof(ifkey), "IFNAME=%s", ifname);
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+
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kd.dptr = ifkey;
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kd.dsize = strlen(ifkey);
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vd = tdb_fetch(pppdb, kd);
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+
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if (vd.dptr != NULL) {
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ret = vd.dsize == key.dsize
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&& memcmp(vd.dptr, key.dptr, vd.dsize) == 0;
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--- a/pppd/sys-linux.c
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+++ b/pppd/sys-linux.c
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@@ -700,6 +700,16 @@ void cfg_bundle(int mrru, int mtru, int
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add_fd(ppp_dev_fd);
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}
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+static void
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+setenv_ifunit(void)
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+{
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+#ifdef USE_TDB
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+ char tmp[11];
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+ slprintf(tmp, sizeof(tmp), "%d", ifunit);
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+ script_setenv("IFUNIT", tmp, 0);
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+#endif
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+}
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+
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/*
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* make_new_bundle - create a new PPP unit (i.e. a bundle)
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* and connect our channel to it. This should only get called
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@@ -718,6 +728,8 @@ void make_new_bundle(int mrru, int mtru,
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/* set the mrru and flags */
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cfg_bundle(mrru, mtru, rssn, tssn);
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+
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+ setenv_ifunit();
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}
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/*
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