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| author | David Ahern <dsahern@gmail.com> | 2018-04-18 02:33:22 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-04-18 05:41:17 +0200 |
| commit | acb54e3cba404c20f07733f3222c0418a7724a5b (patch) | |
| tree | 015cc63067a3cf9788317f597b1cd88601bd0d67 /net/ipv6/route.c | |
| parent | net/ipv6: Create a neigh_lookup for FIB entries (diff) | |
| download | linux-acb54e3cba404c20f07733f3222c0418a7724a5b.tar.xz linux-acb54e3cba404c20f07733f3222c0418a7724a5b.zip | |
net/ipv6: Add gfp_flags to route add functions
Most FIB entries can be added using memory allocated with GFP_KERNEL.
Add gfp_flags to ip6_route_add and addrconf_dst_alloc. Code paths that
can be reached from the packet path (e.g., ndisc and autoconfig) or
atomic notifiers use GFP_ATOMIC; paths from user context (adding
addresses and routes) use GFP_KERNEL.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/route.c')
| -rw-r--r-- | net/ipv6/route.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c index d635d71f7d51..56a854b426a6 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -2866,6 +2866,7 @@ out: } static struct rt6_info *ip6_route_info_create(struct fib6_config *cfg, + gfp_t gfp_flags, struct netlink_ext_ack *extack) { struct net *net = cfg->fc_nlinfo.nl_net; @@ -3086,12 +3087,13 @@ out: return ERR_PTR(err); } -int ip6_route_add(struct fib6_config *cfg, struct netlink_ext_ack *extack) +int ip6_route_add(struct fib6_config *cfg, gfp_t gfp_flags, + struct netlink_ext_ack *extack) { struct rt6_info *rt; int err; - rt = ip6_route_info_create(cfg, extack); + rt = ip6_route_info_create(cfg, gfp_flags, extack); if (IS_ERR(rt)) return PTR_ERR(rt); @@ -3418,7 +3420,7 @@ static struct rt6_info *rt6_add_route_info(struct net *net, if (!prefixlen) cfg.fc_flags |= RTF_DEFAULT; - ip6_route_add(&cfg, NULL); + ip6_route_add(&cfg, GFP_ATOMIC, NULL); return rt6_get_route_info(net, prefix, prefixlen, gwaddr, dev); } @@ -3469,7 +3471,7 @@ struct rt6_info *rt6_add_dflt_router(struct net *net, cfg.fc_gateway = *gwaddr; - if (!ip6_route_add(&cfg, NULL)) { + if (!ip6_route_add(&cfg, GFP_ATOMIC, NULL)) { struct fib6_table *table; table = fib6_get_table(dev_net(dev), cfg.fc_table); @@ -3567,7 +3569,7 @@ int ipv6_route_ioctl(struct net *net, unsigned int cmd, void __user *arg) rtnl_lock(); switch (cmd) { case SIOCADDRT: - err = ip6_route_add(&cfg, NULL); + err = ip6_route_add(&cfg, GFP_KERNEL, NULL); break; case SIOCDELRT: err = ip6_route_del(&cfg, NULL); @@ -3640,7 +3642,7 @@ static int ip6_pkt_prohibit_out(struct net *net, struct sock *sk, struct sk_buff struct rt6_info *addrconf_dst_alloc(struct net *net, struct inet6_dev *idev, const struct in6_addr *addr, - bool anycast) + bool anycast, gfp_t gfp_flags) { u32 tb_id; struct net_device *dev = idev->dev; @@ -4293,7 +4295,7 @@ static int ip6_route_multipath_add(struct fib6_config *cfg, } r_cfg.fc_flags |= (rtnh->rtnh_flags & RTNH_F_ONLINK); - rt = ip6_route_info_create(&r_cfg, extack); + rt = ip6_route_info_create(&r_cfg, GFP_KERNEL, extack); if (IS_ERR(rt)) { err = PTR_ERR(rt); rt = NULL; @@ -4446,7 +4448,7 @@ static int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr *nlh, if (cfg.fc_mp) return ip6_route_multipath_add(&cfg, extack); else - return ip6_route_add(&cfg, extack); + return ip6_route_add(&cfg, GFP_KERNEL, extack); } static size_t rt6_nlmsg_size(struct rt6_info *rt) |