aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--Documentation/networking/ip-sysctl.txt9
-rw-r--r--include/linux/ipv6.h1
-rw-r--r--include/uapi/linux/ipv6.h1
-rw-r--r--net/ipv6/addrconf.c11
-rw-r--r--net/ipv6/ndisc.c9
5 files changed, 30 insertions, 1 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 54410a1d4065..d8676dda7fa6 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -1732,6 +1732,15 @@ ndisc_notify - BOOLEAN
1 - Generate unsolicited neighbour advertisements when device is brought
up or hardware address changes.
+ndisc_tclass - INTEGER
+ The IPv6 Traffic Class to use by default when sending IPv6 Neighbor
+ Discovery (Router Solicitation, Router Advertisement, Neighbor
+ Solicitation, Neighbor Advertisement, Redirect) messages.
+ These 8 bits can be interpreted as 6 high order bits holding the DSCP
+ value and 2 low order bits representing ECN (which you probably want
+ to leave cleared).
+ 0 - (default)
+
mldv1_unsolicited_report_interval - INTEGER
The interval in milliseconds in which the next unsolicited
MLDv1 report retransmit will take place.
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index ea04ca024f0d..cb18c6290ca8 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -73,6 +73,7 @@ struct ipv6_devconf {
__u32 enhanced_dad;
__u32 addr_gen_mode;
__s32 disable_policy;
+ __s32 ndisc_tclass;
struct ctl_table_header *sysctl_header;
};
diff --git a/include/uapi/linux/ipv6.h b/include/uapi/linux/ipv6.h
index b22a9c4e1b12..9c0f4a92bcff 100644
--- a/include/uapi/linux/ipv6.h
+++ b/include/uapi/linux/ipv6.h
@@ -186,6 +186,7 @@ enum {
DEVCONF_ADDR_GEN_MODE,
DEVCONF_DISABLE_POLICY,
DEVCONF_ACCEPT_RA_RT_INFO_MIN_PLEN,
+ DEVCONF_NDISC_TCLASS,
DEVCONF_MAX
};
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 6233e06fa35c..a6dffd65eb9d 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -5059,6 +5059,7 @@ static inline void ipv6_store_devconf(struct ipv6_devconf *cnf,
array[DEVCONF_ENHANCED_DAD] = cnf->enhanced_dad;
array[DEVCONF_ADDR_GEN_MODE] = cnf->addr_gen_mode;
array[DEVCONF_DISABLE_POLICY] = cnf->disable_policy;
+ array[DEVCONF_NDISC_TCLASS] = cnf->ndisc_tclass;
}
static inline size_t inet6_ifla6_size(void)
@@ -5986,6 +5987,7 @@ int addrconf_sysctl_disable_policy(struct ctl_table *ctl, int write,
}
static int minus_one = -1;
+static const int zero = 0;
static const int one = 1;
static const int two_five_five = 255;
@@ -6357,6 +6359,15 @@ static const struct ctl_table addrconf_sysctl[] = {
.proc_handler = addrconf_sysctl_disable_policy,
},
{
+ .procname = "ndisc_tclass",
+ .data = &ipv6_devconf.ndisc_tclass,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = (void *)&zero,
+ .extra2 = (void *)&two_five_five,
+ },
+ {
/* sentinel */
}
};
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index f9c3ffe04382..b3cea200c85e 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -427,12 +427,19 @@ static void ip6_nd_hdr(struct sk_buff *skb,
int hop_limit, int len)
{
struct ipv6hdr *hdr;
+ struct inet6_dev *idev;
+ unsigned tclass;
+
+ rcu_read_lock();
+ idev = __in6_dev_get(skb->dev);
+ tclass = idev ? idev->cnf.ndisc_tclass : 0;
+ rcu_read_unlock();
skb_push(skb, sizeof(*hdr));
skb_reset_network_header(skb);
hdr = ipv6_hdr(skb);
- ip6_flow_hdr(hdr, 0, 0);
+ ip6_flow_hdr(hdr, tclass, 0);
hdr->payload_len = htons(len);
hdr->nexthdr = IPPROTO_ICMPV6;