xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ipv4: Move cached routes to fib_nh_common

Browse Source 
While the cached routes, nh_pcpu_rth_output and nh_rth_input, are IPv4
specific, a later patch wants to make them accessible for IPv6 nexthops
with IPv4 routes using a fib6_nh. Move the cached routes from fib_nh to
fib_nh_common and update references.

Initialization of the cached entries is moved to fib_nh_common_init,
and free is moved to fib_nh_common_release.

Change in location only, from fib_nh up to fib_nh_common; no functional
change intended.

Signed-off-by: David Ahern <dsahern@gmail.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern
2019-04-30 07:45:48 -07:00
committed by David S. Miller
parent a734d1f4c2
commit 0f457a3662
3 changed files with 32 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
net/ipv4/fib_semantics.c
View File

@@ -212,6 +212,8 @@ void fib_nh_common_release(struct fib_nh_common *nhc)
dev_put(nhc->nhc_dev);
lwtstate_put(nhc->nhc_lwtstate);
rt_fibinfo_free_cpus(nhc->nhc_pcpu_rth_output);
rt_fibinfo_free(&nhc->nhc_rth_input);
}
EXPORT_SYMBOL_GPL(fib_nh_common_release);
@@ -223,8 +225,6 @@ void fib_nh_release(struct net *net, struct fib_nh *fib_nh)
#endif
fib_nh_common_release(&fib_nh->nh_common);
free_nh_exceptions(fib_nh);
rt_fibinfo_free_cpus(fib_nh->nh_pcpu_rth_output);
rt_fibinfo_free(&fib_nh->nh_rth_input);
}
/* Release a nexthop info record */
@@ -491,23 +491,35 @@ int fib_nh_common_init(struct fib_nh_common *nhc, struct nlattr *encap,
u16 encap_type, void *cfg, gfp_t gfp_flags,
struct netlink_ext_ack *extack)
{
int err;
nhc->nhc_pcpu_rth_output = alloc_percpu_gfp(struct rtable __rcu *,
gfp_flags);
if (!nhc->nhc_pcpu_rth_output)
return -ENOMEM;
if (encap) {
struct lwtunnel_state *lwtstate;
int err;
if (encap_type == LWTUNNEL_ENCAP_NONE) {
NL_SET_ERR_MSG(extack, "LWT encap type not specified");
return -EINVAL;
err = -EINVAL;
goto lwt_failure;
}
err = lwtunnel_build_state(encap_type, encap, nhc->nhc_family,
cfg, &lwtstate, extack);
if (err)
return err;
goto lwt_failure;
nhc->nhc_lwtstate = lwtstate_get(lwtstate);
}
return 0;
lwt_failure:
rt_fibinfo_free_cpus(nhc->nhc_pcpu_rth_output);
nhc->nhc_pcpu_rth_output = NULL;
return err;
}
EXPORT_SYMBOL_GPL(fib_nh_common_init);
@@ -515,18 +527,14 @@ int fib_nh_init(struct net *net, struct fib_nh *nh,
struct fib_config *cfg, int nh_weight,
struct netlink_ext_ack *extack)
{
int err = -ENOMEM;
int err;
nh->fib_nh_family = AF_INET;
nh->nh_pcpu_rth_output = alloc_percpu(struct rtable __rcu *);
if (!nh->nh_pcpu_rth_output)
goto err_out;
err = fib_nh_common_init(&nh->nh_common, cfg->fc_encap,
cfg->fc_encap_type, cfg, GFP_KERNEL, extack);
if (err)
goto init_failure;
return err;
nh->fib_nh_oif = cfg->fc_oif;
nh->fib_nh_gw_family = cfg->fc_gw_family;
@@ -546,12 +554,6 @@ int fib_nh_init(struct net *net, struct fib_nh *nh,
nh->fib_nh_weight = nh_weight;
#endif
return 0;
init_failure:
rt_fibinfo_free_cpus(nh->nh_pcpu_rth_output);
nh->nh_pcpu_rth_output = NULL;
err_out:
return err;
}
#ifdef CONFIG_IP_ROUTE_MULTIPATH