diff options
| author | Donald Sharp <sharpd@cumulusnetworks.com> | 2018-02-20 16:55:58 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-02-22 01:49:24 +0300 |
| commit | cac56209a66ea3b0be67aa2966b2c628b944da1e (patch) | |
| tree | 1f100b5a7ef31579afc6f9242c159cd6c131d780 | |
| parent | af9090c2375e6a4a7b3059c9a3d36cb363c35d42 (diff) | |
| download | linux-cac56209a66ea3b0be67aa2966b2c628b944da1e.tar.xz | |
net: Allow a rule to track originating protocol
Allow a rule that is being added/deleted/modified or
dumped to contain the originating protocol's id.
The protocol is handled just like a routes originating
protocol is. This is especially useful because there
is starting to be a plethora of different user space
programs adding rules.
Allow the vrf device to specify that the kernel is the originator
of the rule created for this device.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/vrf.c | 1 | ||||
| -rw-r--r-- | include/net/fib_rules.h | 3 | ||||
| -rw-r--r-- | include/uapi/linux/fib_rules.h | 2 | ||||
| -rw-r--r-- | net/core/fib_rules.c | 7 |
4 files changed, 10 insertions, 3 deletions
diff --git a/drivers/net/vrf.c b/drivers/net/vrf.c index 239c78c53e58..951a4b42cb29 100644 --- a/drivers/net/vrf.c +++ b/drivers/net/vrf.c @@ -1174,6 +1174,7 @@ static int vrf_fib_rule(const struct net_device *dev, __u8 family, bool add_it) memset(frh, 0, sizeof(*frh)); frh->family = family; frh->action = FR_ACT_TO_TBL; + frh->proto = RTPROT_KERNEL; if (nla_put_u8(skb, FRA_L3MDEV, 1)) goto nla_put_failure; diff --git a/include/net/fib_rules.h b/include/net/fib_rules.h index 648caf90ec07..b166ef07e6d4 100644 --- a/include/net/fib_rules.h +++ b/include/net/fib_rules.h @@ -26,7 +26,8 @@ struct fib_rule { u32 table; u8 action; u8 l3mdev; - /* 2 bytes hole, try to use */ + u8 proto; + /* 1 byte hole, try to use */ u32 target; __be64 tun_id; struct fib_rule __rcu *ctarget; diff --git a/include/uapi/linux/fib_rules.h b/include/uapi/linux/fib_rules.h index 2b642bf9b5a0..925539172d5b 100644 --- a/include/uapi/linux/fib_rules.h +++ b/include/uapi/linux/fib_rules.h @@ -23,8 +23,8 @@ struct fib_rule_hdr { __u8 tos; __u8 table; + __u8 proto; __u8 res1; /* reserved */ - __u8 res2; /* reserved */ __u8 action; __u32 flags; diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c index cb071b8e8d17..88298f18cbae 100644 --- a/net/core/fib_rules.c +++ b/net/core/fib_rules.c @@ -51,6 +51,7 @@ int fib_default_rule_add(struct fib_rules_ops *ops, r->pref = pref; r->table = table; r->flags = flags; + r->proto = RTPROT_KERNEL; r->fr_net = ops->fro_net; r->uid_range = fib_kuid_range_unset; @@ -465,6 +466,7 @@ int fib_nl_newrule(struct sk_buff *skb, struct nlmsghdr *nlh, } refcount_set(&rule->refcnt, 1); rule->fr_net = net; + rule->proto = frh->proto; rule->pref = tb[FRA_PRIORITY] ? nla_get_u32(tb[FRA_PRIORITY]) : fib_default_rule_pref(ops); @@ -664,6 +666,9 @@ int fib_nl_delrule(struct sk_buff *skb, struct nlmsghdr *nlh, } list_for_each_entry(rule, &ops->rules_list, list) { + if (frh->proto && (frh->proto != rule->proto)) + continue; + if (frh->action && (frh->action != rule->action)) continue; @@ -808,9 +813,9 @@ static int fib_nl_fill_rule(struct sk_buff *skb, struct fib_rule *rule, if (nla_put_u32(skb, FRA_SUPPRESS_PREFIXLEN, rule->suppress_prefixlen)) goto nla_put_failure; frh->res1 = 0; - frh->res2 = 0; frh->action = rule->action; frh->flags = rule->flags; + frh->proto = rule->proto; if (rule->action == FR_ACT_GOTO && rcu_access_pointer(rule->ctarget) == NULL) |