odhcp6c: add -K option to set packet kernel priority

[project/odhcp6c.git] / src / odhcp6c.c

diff --git a/src/odhcp6c.c b/src/odhcp6c.c
index e713da9f5a9c4c4942b733ec5de3c01261df3d82..4a6d7bd62579a0570e720b2619722af14000468e 100644 (file)
--- a/src/odhcp6c.c
+++ b/src/odhcp6c.c
@@ -178,6 +178,7 @@ int main(_unused int argc, char* const argv[])
        bool stateful_only_mode = 0;
        struct odhcp6c_opt *opt;
        int ia_pd_iaid_index = 0;
+       int sk_prio = 0;
        int sol_timeout = DHCPV6_SOL_MAX_RT;
        int verbosity = 0;
        bool help = false, daemonize = false;
@@ -187,7 +188,7 @@ int main(_unused int argc, char* const argv[])
        unsigned int ra_options = RA_RDNSS_DEFAULT_LIFETIME;
        unsigned int ra_holdoff_interval = RA_MIN_ADV_INTERVAL;
 
-       while ((c = getopt(argc, argv, "S::DN:V:P:FB:c:i:r:Ru:Ux:s:kt:m:Lhedp:fav")) != -1) {
+       while ((c = getopt(argc, argv, "S::DN:V:P:FB:c:i:r:Ru:Ux:s:kK:t:m:Lhedp:fav")) != -1) {
                switch (c) {
                case 'S':
                        allow_slaac_only = (optarg) ? atoi(optarg) : -1;
@@ -345,6 +346,10 @@ int main(_unused int argc, char* const argv[])
                        release = false;
                        break;
 
+               case 'K':
+                       sk_prio = atoi(optarg);
+                       break;
+
                case 't':
                        sol_timeout = atoi(optarg);
                        break;
@@ -417,7 +422,7 @@ int main(_unused int argc, char* const argv[])
        signal(SIGUSR2, sighandler);
 
        if ((urandom_fd = open("/dev/urandom", O_CLOEXEC | O_RDONLY)) < 0 ||
-                       init_dhcpv6(ifname, client_options, sol_timeout) ||
+                       init_dhcpv6(ifname, client_options, sk_prio, sol_timeout) ||
                        ra_init(ifname, &ifid, ra_options, ra_holdoff_interval) ||
                        script_init(script, ifname)) {
                syslog(LOG_ERR, "failed to initialize: %s", strerror(errno));
@@ -627,6 +632,7 @@ static int usage(void)
        "       -a              Don't send Accept Reconfigure option\n"
        "       -f              Don't send Client FQDN option\n"
        "       -k              Don't send a RELEASE when stopping\n"
+       "       -K <sk-prio>    Set packet kernel priority (0)\n"
        "       -t <seconds>    Maximum timeout for DHCPv6-SOLICIT (120)\n"
        "       -m <seconds>    Minimum time between accepting RA updates (3)\n"
        "       -L              Ignore default lifetime for RDNSS records\n"