diff options
Diffstat (limited to 'packages/linux-kernel/patches/kernel/0001-VyOS-Add-linkstate-IP-device-attribute.patch')
| -rw-r--r-- | packages/linux-kernel/patches/kernel/0001-VyOS-Add-linkstate-IP-device-attribute.patch | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/packages/linux-kernel/patches/kernel/0001-VyOS-Add-linkstate-IP-device-attribute.patch b/packages/linux-kernel/patches/kernel/0001-VyOS-Add-linkstate-IP-device-attribute.patch new file mode 100644 index 00000000..c70a9f13 --- /dev/null +++ b/packages/linux-kernel/patches/kernel/0001-VyOS-Add-linkstate-IP-device-attribute.patch @@ -0,0 +1,165 @@ +From 81d38c4a32e059ad7835f7dc254e7627642afbe9 Mon Sep 17 00:00:00 2001 +From: Stephen Hemminger <stephen@networkplumber.org> +Date: Mon, 29 Apr 2013 18:50:15 -0700 +Subject: [PATCH] VyOS: Add linkstate IP device attribute + +Backport of earlier Vyatta patch. + +(cherry picked from commit 7c5a851086686be14ae937c80d6cee34814dbefc) + +--- + Documentation/networking/ip-sysctl.txt | 13 +++++++++++++ + include/linux/inetdevice.h | 1 + + include/linux/ipv6.h | 1 + + include/uapi/linux/ip.h | 1 + + include/uapi/linux/ipv6.h | 1 + + net/ipv4/devinet.c | 2 ++ + net/ipv6/addrconf.c | 9 +++++++++ + net/ipv6/route.c | 12 ++++++++++++ + 8 files changed, 40 insertions(+) + +diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt +index 7eb9366422f5..b99d54a313a0 100644 +--- a/Documentation/networking/ip-sysctl.txt ++++ b/Documentation/networking/ip-sysctl.txt +@@ -1177,6 +1177,19 @@ rp_filter - INTEGER + Default value is 0. Note that some distributions enable it + in startup scripts. + ++link_filter - INTEGER ++ 0 - Allow packets to be received for the address on this interface ++ even if interface is disabled or no carrier. ++ ++ 1 - Ignore packets received if interface associated with the incoming ++ address is down. ++ ++ 2 - Ignore packets received if interface associated with the incoming ++ address is down or has no carrier. ++ ++ Default value is 0. Note that some distributions enable it ++ in startup scripts. ++ + arp_filter - BOOLEAN + 1 - Allows you to have multiple network interfaces on the same + subnet, and have the ARPs for each interface be answered +diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h +index a64f21a97369..4014dd852bae 100644 +--- a/include/linux/inetdevice.h ++++ b/include/linux/inetdevice.h +@@ -133,6 +133,7 @@ static inline void ipv4_devconf_setall(struct in_device *in_dev) + #define IN_DEV_ARP_ANNOUNCE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_ANNOUNCE) + #define IN_DEV_ARP_IGNORE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_IGNORE) + #define IN_DEV_ARP_NOTIFY(in_dev) IN_DEV_MAXCONF((in_dev), ARP_NOTIFY) ++#define IN_DEV_LINKFILTER(in_dev) IN_DEV_MAXCONF((in_dev), LINKFILTER) + + struct in_ifaddr { + struct hlist_node hash; +diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h +index 8415bf1a9776..80a0ada19c9a 100644 +--- a/include/linux/ipv6.h ++++ b/include/linux/ipv6.h +@@ -76,6 +76,7 @@ struct ipv6_devconf { + __s32 ndisc_tclass; + + struct ctl_table_header *sysctl_header; ++ __s32 link_filter; /* VyOS */ + }; + + struct ipv6_params { +diff --git a/include/uapi/linux/ip.h b/include/uapi/linux/ip.h +index e42d13b55cf3..baf8e77c201b 100644 +--- a/include/uapi/linux/ip.h ++++ b/include/uapi/linux/ip.h +@@ -169,6 +169,7 @@ enum + IPV4_DEVCONF_DROP_UNICAST_IN_L2_MULTICAST, + IPV4_DEVCONF_DROP_GRATUITOUS_ARP, + IPV4_DEVCONF_BC_FORWARDING, ++ IPV4_DEVCONF_LINKFILTER, /* VyOS only */ + __IPV4_DEVCONF_MAX + }; + +diff --git a/include/uapi/linux/ipv6.h b/include/uapi/linux/ipv6.h +index 9c0f4a92bcff..619edd130cfd 100644 +--- a/include/uapi/linux/ipv6.h ++++ b/include/uapi/linux/ipv6.h +@@ -187,6 +187,7 @@ enum { + DEVCONF_DISABLE_POLICY, + DEVCONF_ACCEPT_RA_RT_INFO_MIN_PLEN, + DEVCONF_NDISC_TCLASS, ++ DEVCONF_LINK_FILTER, + DEVCONF_MAX + }; + +diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c +index a08d682ba676..17949eb57a5b 100644 +--- a/net/ipv4/devinet.c ++++ b/net/ipv4/devinet.c +@@ -2318,6 +2318,8 @@ static struct devinet_sysctl_table { + "route_localnet"), + DEVINET_SYSCTL_FLUSHING_ENTRY(DROP_UNICAST_IN_L2_MULTICAST, + "drop_unicast_in_l2_multicast"), ++ /* VyOS */ ++ DEVINET_SYSCTL_RW_ENTRY(LINKFILTER, "link_filter"), + }, + }; + +diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c +index 627cd24b7c0d..8c49eac27fd0 100644 +--- a/net/ipv6/addrconf.c ++++ b/net/ipv6/addrconf.c +@@ -5240,6 +5240,7 @@ static inline void ipv6_store_devconf(struct ipv6_devconf *cnf, + array[DEVCONF_ADDR_GEN_MODE] = cnf->addr_gen_mode; + array[DEVCONF_DISABLE_POLICY] = cnf->disable_policy; + array[DEVCONF_NDISC_TCLASS] = cnf->ndisc_tclass; ++ array[DEVCONF_LINK_FILTER] = cnf->link_filter; + } + + static inline size_t inet6_ifla6_size(void) +@@ -6561,6 +6562,14 @@ static const struct ctl_table addrconf_sysctl[] = { + .mode = 0644, + .proc_handler = addrconf_sysctl_disable_policy, + }, ++ /* VyOS */ ++ { ++ .procname = "link_filter", ++ .data = &ipv6_devconf.link_filter, ++ .maxlen = sizeof(int), ++ .mode = 0644, ++ .proc_handler = proc_dointvec ++ }, + { + .procname = "ndisc_tclass", + .data = &ipv6_devconf.ndisc_tclass, +diff --git a/net/ipv6/route.c b/net/ipv6/route.c +index dad35cd48807..1a2439c6a257 100644 +--- a/net/ipv6/route.c ++++ b/net/ipv6/route.c +@@ -595,6 +595,15 @@ static inline int rt6_check_dev(struct fib6_info *rt, int oif) + return 0; + } + ++static inline int rt6_link_filter(struct fib6_info *rt) ++{ ++ const struct net_device *dev = rt->fib6_nh.nh_dev; ++ int linkf = __in6_dev_get(dev)->cnf.link_filter; ++ ++ return (linkf && !netif_running(dev)) ++ || (linkf > 1 && !netif_carrier_ok(dev)); ++} ++ + static inline enum rt6_nud_state rt6_check_neigh(struct fib6_info *rt) + { + enum rt6_nud_state ret = RT6_NUD_FAIL_HARD; +@@ -634,6 +643,9 @@ static int rt6_score_route(struct fib6_info *rt, int oif, int strict) + m = rt6_check_dev(rt, oif); + if (!m && (strict & RT6_LOOKUP_F_IFACE)) + return RT6_NUD_FAIL_HARD; ++ if (rt6_link_filter(rt)) ++ return -1; ++ + #ifdef CONFIG_IPV6_ROUTER_PREF + m |= IPV6_DECODE_PREF(IPV6_EXTRACT_PREF(rt->fib6_flags)) << 2; + #endif +-- +2.20.1 + |