net: ipmr: drop ip_mr_init() mrt_cachep null check as we'll panic if it fails

[deliverable/linux.git] / net / ipv4 / igmp.c

diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 64aaf3522a59f30672689f7309987606773ccb0c..6baf36e11808e5c93c2e092139bed60cdacc4c8a 100644 (file)
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -2392,11 +2392,11 @@ int ip_mc_msfget(struct sock *sk, struct ip_msfilter *msf,
        struct ip_sf_socklist *psl;
        struct net *net = sock_net(sk);
 
+       ASSERT_RTNL();
+
        if (!ipv4_is_multicast(addr))
                return -EINVAL;
 
-       rtnl_lock();
-
        imr.imr_multiaddr.s_addr = msf->imsf_multiaddr;
        imr.imr_address.s_addr = msf->imsf_interface;
        imr.imr_ifindex = 0;
@@ -2417,7 +2417,6 @@ int ip_mc_msfget(struct sock *sk, struct ip_msfilter *msf,
                goto done;
        msf->imsf_fmode = pmc->sfmode;
        psl = rtnl_dereference(pmc->sflist);
-       rtnl_unlock();
        if (!psl) {
                len = 0;
                count = 0;
@@ -2436,7 +2435,6 @@ int ip_mc_msfget(struct sock *sk, struct ip_msfilter *msf,
                return -EFAULT;
        return 0;
 done:
-       rtnl_unlock();
        return err;
 }
 
@@ -2450,6 +2448,8 @@ int ip_mc_gsfget(struct sock *sk, struct group_filter *gsf,
        struct inet_sock *inet = inet_sk(sk);
        struct ip_sf_socklist *psl;
 
+       ASSERT_RTNL();
+
        psin = (struct sockaddr_in *)&gsf->gf_group;
        if (psin->sin_family != AF_INET)
                return -EINVAL;
@@ -2457,8 +2457,6 @@ int ip_mc_gsfget(struct sock *sk, struct group_filter *gsf,
        if (!ipv4_is_multicast(addr))
                return -EINVAL;
 
-       rtnl_lock();
-
        err = -EADDRNOTAVAIL;
 
        for_each_pmc_rtnl(inet, pmc) {
@@ -2470,7 +2468,6 @@ int ip_mc_gsfget(struct sock *sk, struct group_filter *gsf,
                goto done;
        gsf->gf_fmode = pmc->sfmode;
        psl = rtnl_dereference(pmc->sflist);
-       rtnl_unlock();
        count = psl ? psl->sl_count : 0;
        copycount = count < gsf->gf_numsrc ? count : gsf->gf_numsrc;
        gsf->gf_numsrc = count;
@@ -2490,7 +2487,6 @@ int ip_mc_gsfget(struct sock *sk, struct group_filter *gsf,
        }
        return 0;
 done:
-       rtnl_unlock();
        return err;
 }