diff options
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/ip_gre.c | 1 | ||||
| -rw-r--r-- | net/ipv4/ip_output.c | 1 | ||||
| -rw-r--r-- | net/ipv4/ip_tunnel.c | 1 | ||||
| -rw-r--r-- | net/ipv4/ip_tunnel_core.c | 1 | ||||
| -rw-r--r-- | net/ipv4/ip_vti.c | 1 | ||||
| -rw-r--r-- | net/ipv4/ipip.c | 1 | ||||
| -rw-r--r-- | net/ipv4/ipmr.c | 168 |
7 files changed, 137 insertions, 37 deletions
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 614521437e30..04a48c0159cc 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -24,7 +24,6 @@ #include <linux/tcp.h> #include <linux/udp.h> #include <linux/if_arp.h> -#include <linux/mroute.h> #include <linux/if_vlan.h> #include <linux/init.h> #include <linux/in6.h> diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index 4233cbe47052..e0b94cd843d7 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -76,7 +76,6 @@ #include <linux/igmp.h> #include <linux/netfilter_ipv4.h> #include <linux/netfilter_bridge.h> -#include <linux/mroute.h> #include <linux/netlink.h> #include <linux/tcp.h> diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c index cbb51f3fac06..0f6e9ee031c4 100644 --- a/net/ipv4/ip_tunnel.c +++ b/net/ipv4/ip_tunnel.c @@ -30,7 +30,6 @@ #include <linux/tcp.h> #include <linux/udp.h> #include <linux/if_arp.h> -#include <linux/mroute.h> #include <linux/init.h> #include <linux/in6.h> #include <linux/inetdevice.h> diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c index 6cb9009c3d96..1db8418aa62e 100644 --- a/net/ipv4/ip_tunnel_core.c +++ b/net/ipv4/ip_tunnel_core.c @@ -24,7 +24,6 @@ #include <linux/netdevice.h> #include <linux/in.h> #include <linux/if_arp.h> -#include <linux/mroute.h> #include <linux/init.h> #include <linux/in6.h> #include <linux/inetdevice.h> diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c index 4d8f0b698777..02d9c21e2953 100644 --- a/net/ipv4/ip_vti.c +++ b/net/ipv4/ip_vti.c @@ -30,7 +30,6 @@ #include <linux/tcp.h> #include <linux/udp.h> #include <linux/if_arp.h> -#include <linux/mroute.h> #include <linux/init.h> #include <linux/netfilter_ipv4.h> #include <linux/if_ether.h> diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c index f34c31defafe..1f067294cbc5 100644 --- a/net/ipv4/ipip.c +++ b/net/ipv4/ipip.c @@ -103,7 +103,6 @@ #include <linux/tcp.h> #include <linux/udp.h> #include <linux/if_arp.h> -#include <linux/mroute.h> #include <linux/init.h> #include <linux/netfilter_ipv4.h> #include <linux/if_ether.h> diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index a2d248d9c35c..4c10ee771648 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -66,22 +66,7 @@ #include <net/netlink.h> #include <net/fib_rules.h> #include <linux/netconf.h> - -struct mr_table { - struct list_head list; - possible_net_t net; - u32 id; - struct sock __rcu *mroute_sk; - struct timer_list ipmr_expire_timer; - struct list_head mfc_unres_queue; - struct list_head mfc_cache_array[MFC_LINES]; - struct vif_device vif_table[MAXVIFS]; - int maxvif; - atomic_t cache_resolve_queue_len; - bool mroute_do_assert; - bool mroute_do_pim; - int mroute_reg_vif_num; -}; +#include <net/nexthop.h> struct ipmr_rule { struct fib_rule common; @@ -91,11 +76,6 @@ struct ipmr_result { struct mr_table *mrt; }; -static inline bool pimsm_enabled(void) -{ - return IS_BUILTIN(CONFIG_IP_PIMSM_V1) || IS_BUILTIN(CONFIG_IP_PIMSM_V2); -} - /* Big lock, protecting vif table, mrt cache and mroute socket state. * Note that the changes are semaphored via rtnl_lock. */ @@ -104,8 +84,6 @@ static DEFINE_RWLOCK(mrt_lock); /* Multicast router control variables */ -#define VIF_EXISTS(_mrt, _idx) ((_mrt)->vif_table[_idx].dev != NULL) - /* Special spinlock for queue of unresolved entries */ static DEFINE_SPINLOCK(mfc_unres_lock); @@ -769,7 +747,7 @@ static int vif_add(struct net *net, struct mr_table *mrt, switch (vifc->vifc_flags) { case VIFF_REGISTER: - if (!pimsm_enabled()) + if (!ipmr_pimsm_enabled()) return -EINVAL; /* Special Purpose VIF in PIM * All the packets will be sent to the daemon @@ -1307,12 +1285,14 @@ int ip_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, switch (optname) { case MRT_INIT: - if (optlen != sizeof(int)) + if (optlen != sizeof(int)) { ret = -EINVAL; - if (rtnl_dereference(mrt->mroute_sk)) + break; + } + if (rtnl_dereference(mrt->mroute_sk)) { ret = -EADDRINUSE; - if (ret) break; + } ret = ip_ra_control(sk, 1, mrtsock_destruct); if (ret == 0) { @@ -1395,7 +1375,7 @@ int ip_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, mrt->mroute_do_assert = val; break; case MRT_PIM: - if (!pimsm_enabled()) { + if (!ipmr_pimsm_enabled()) { ret = -ENOPROTOOPT; break; } @@ -1469,7 +1449,7 @@ int ip_mroute_getsockopt(struct sock *sk, int optname, char __user *optval, int val = 0x0305; break; case MRT_PIM: - if (!pimsm_enabled()) + if (!ipmr_pimsm_enabled()) return -ENOPROTOOPT; val = mrt->mroute_do_pim; break; @@ -2199,8 +2179,6 @@ int ipmr_get_route(struct net *net, struct sk_buff *skb, } read_lock(&mrt_lock); - if (!nowait && (rtm->rtm_flags & RTM_F_NOTIFY)) - cache->mfc_flags |= MFC_NOTIFY; err = __ipmr_fill_mroute(mrt, skb, cache, rtm); read_unlock(&mrt_lock); rcu_read_unlock(); @@ -2362,6 +2340,130 @@ done: return skb->len; } +static const struct nla_policy rtm_ipmr_policy[RTA_MAX + 1] = { + [RTA_SRC] = { .type = NLA_U32 }, + [RTA_DST] = { .type = NLA_U32 }, + [RTA_IIF] = { .type = NLA_U32 }, + [RTA_TABLE] = { .type = NLA_U32 }, + [RTA_MULTIPATH] = { .len = sizeof(struct rtnexthop) }, +}; + +static bool ipmr_rtm_validate_proto(unsigned char rtm_protocol) +{ + switch (rtm_protocol) { + case RTPROT_STATIC: + case RTPROT_MROUTED: + return true; + } + return false; +} + +static int ipmr_nla_get_ttls(const struct nlattr *nla, struct mfcctl *mfcc) +{ + struct rtnexthop *rtnh = nla_data(nla); + int remaining = nla_len(nla), vifi = 0; + + while (rtnh_ok(rtnh, remaining)) { + mfcc->mfcc_ttls[vifi] = rtnh->rtnh_hops; + if (++vifi == MAXVIFS) + break; + rtnh = rtnh_next(rtnh, &remaining); + } + + return remaining > 0 ? -EINVAL : vifi; +} + +/* returns < 0 on error, 0 for ADD_MFC and 1 for ADD_MFC_PROXY */ +static int rtm_to_ipmr_mfcc(struct net *net, struct nlmsghdr *nlh, + struct mfcctl *mfcc, int *mrtsock, + struct mr_table **mrtret) +{ + struct net_device *dev = NULL; + u32 tblid = RT_TABLE_DEFAULT; + struct mr_table *mrt; + struct nlattr *attr; + struct rtmsg *rtm; + int ret, rem; + + ret = nlmsg_validate(nlh, sizeof(*rtm), RTA_MAX, rtm_ipmr_policy); + if (ret < 0) + goto out; + rtm = nlmsg_data(nlh); + + ret = -EINVAL; + if (rtm->rtm_family != RTNL_FAMILY_IPMR || rtm->rtm_dst_len != 32 || + rtm->rtm_type != RTN_MULTICAST || + rtm->rtm_scope != RT_SCOPE_UNIVERSE || + !ipmr_rtm_validate_proto(rtm->rtm_protocol)) + goto out; + + memset(mfcc, 0, sizeof(*mfcc)); + mfcc->mfcc_parent = -1; + ret = 0; + nlmsg_for_each_attr(attr, nlh, sizeof(struct rtmsg), rem) { + switch (nla_type(attr)) { + case RTA_SRC: + mfcc->mfcc_origin.s_addr = nla_get_be32(attr); + break; + case RTA_DST: + mfcc->mfcc_mcastgrp.s_addr = nla_get_be32(attr); + break; + case RTA_IIF: + dev = __dev_get_by_index(net, nla_get_u32(attr)); + if (!dev) { + ret = -ENODEV; + goto out; + } + break; + case RTA_MULTIPATH: + if (ipmr_nla_get_ttls(attr, mfcc) < 0) { + ret = -EINVAL; + goto out; + } + break; + case RTA_PREFSRC: + ret = 1; + break; + case RTA_TABLE: + tblid = nla_get_u32(attr); + break; + } + } + mrt = ipmr_get_table(net, tblid); + if (!mrt) { + ret = -ENOENT; + goto out; + } + *mrtret = mrt; + *mrtsock = rtm->rtm_protocol == RTPROT_MROUTED ? 1 : 0; + if (dev) + mfcc->mfcc_parent = ipmr_find_vif(mrt, dev); + +out: + return ret; +} + +/* takes care of both newroute and delroute */ +static int ipmr_rtm_route(struct sk_buff *skb, struct nlmsghdr *nlh) +{ + struct net *net = sock_net(skb->sk); + int ret, mrtsock, parent; + struct mr_table *tbl; + struct mfcctl mfcc; + + mrtsock = 0; + tbl = NULL; + ret = rtm_to_ipmr_mfcc(net, nlh, &mfcc, &mrtsock, &tbl); + if (ret < 0) + return ret; + + parent = ret ? mfcc.mfcc_parent : -1; + if (nlh->nlmsg_type == RTM_NEWROUTE) + return ipmr_mfc_add(net, tbl, &mfcc, mrtsock, parent); + else + return ipmr_mfc_delete(tbl, &mfcc, parent); +} + #ifdef CONFIG_PROC_FS /* The /proc interfaces to multicast routing : * /proc/net/ip_mr_cache & /proc/net/ip_mr_vif @@ -2715,6 +2817,10 @@ int __init ip_mr_init(void) #endif rtnl_register(RTNL_FAMILY_IPMR, RTM_GETROUTE, NULL, ipmr_rtm_dumproute, NULL); + rtnl_register(RTNL_FAMILY_IPMR, RTM_NEWROUTE, + ipmr_rtm_route, NULL, NULL); + rtnl_register(RTNL_FAMILY_IPMR, RTM_DELROUTE, + ipmr_rtm_route, NULL, NULL); return 0; #ifdef CONFIG_IP_PIMSM_V2 |