ipv4: Add fib_check_nh_v6_gw (717a8f5b) · Commits · 戴 / test

net/ipv4/fib_semantics.c

+27 −0

Original line number	Diff line number	Diff line
		@@ -41,6 +41,7 @@
		#include <net/tcp.h>
		#include <net/sock.h>
		#include <net/ip_fib.h>
		#include <net/ip6_fib.h>
		#include <net/netlink.h>
		#include <net/nexthop.h>
		#include <net/lwtunnel.h>
		@@ -841,6 +842,30 @@ bool fib_metrics_match(struct fib_config cfg, struct fib_info fi)
		return true;
		}

		static int fib_check_nh_v6_gw(struct net net, struct fib_nh nh,
		u32 table, struct netlink_ext_ack *extack)
		{
		struct fib6_config cfg = {
		.fc_table = table,
		.fc_flags = nh->fib_nh_flags \| RTF_GATEWAY,
		.fc_ifindex = nh->fib_nh_oif,
		.fc_gateway = nh->fib_nh_gw6,
		};
		struct fib6_nh fib6_nh = {};
		int err;

		err = ipv6_stub->fib6_nh_init(net, &fib6_nh, &cfg, GFP_KERNEL, extack);
		if (!err) {
		nh->fib_nh_dev = fib6_nh.fib_nh_dev;
		dev_hold(nh->fib_nh_dev);
		nh->fib_nh_oif = nh->fib_nh_dev->ifindex;
		nh->fib_nh_scope = RT_SCOPE_LINK;

		ipv6_stub->fib6_nh_release(&fib6_nh);
		}

		return err;
		}

		/*
		* Picture
		@@ -1023,6 +1048,8 @@ static int fib_check_nh(struct fib_config cfg, struct fib_nh nh,

		if (nh->fib_nh_gw_family == AF_INET)
		err = fib_check_nh_v4_gw(net, nh, table, cfg->fc_scope, extack);
		else if (nh->fib_nh_gw_family == AF_INET6)
		err = fib_check_nh_v6_gw(net, nh, table, extack);
		else
		err = fib_check_nh_nongw(net, nh, extack);