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author | David S. Miller <davem@davemloft.net> | 2016-03-19 21:05:24 -0400 |
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committer | David S. Miller <davem@davemloft.net> | 2016-03-19 21:05:24 -0400 |
commit | c78a85a8430e35aecd53e190a2f6b999062b1037 (patch) | |
tree | fbd69827579db437492fb77b5faa53814114bed3 /net/core/lwtunnel.c | |
parent | sctp: fix copying more bytes than expected in sctp_add_bind_addr (diff) | |
parent | Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm (diff) | |
download | linux-dev-c78a85a8430e35aecd53e190a2f6b999062b1037.tar.xz linux-dev-c78a85a8430e35aecd53e190a2f6b999062b1037.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
Diffstat (limited to 'net/core/lwtunnel.c')
-rw-r--r-- | net/core/lwtunnel.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/net/core/lwtunnel.c b/net/core/lwtunnel.c index 299cfc24d888..669ecc9f884e 100644 --- a/net/core/lwtunnel.c +++ b/net/core/lwtunnel.c @@ -27,6 +27,31 @@ #include <net/rtnetlink.h> #include <net/ip6_fib.h> +#ifdef CONFIG_MODULES + +static const char *lwtunnel_encap_str(enum lwtunnel_encap_types encap_type) +{ + /* Only lwt encaps implemented without using an interface for + * the encap need to return a string here. + */ + switch (encap_type) { + case LWTUNNEL_ENCAP_MPLS: + return "MPLS"; + case LWTUNNEL_ENCAP_ILA: + return "ILA"; + case LWTUNNEL_ENCAP_IP6: + case LWTUNNEL_ENCAP_IP: + case LWTUNNEL_ENCAP_NONE: + case __LWTUNNEL_ENCAP_MAX: + /* should not have got here */ + WARN_ON(1); + break; + } + return NULL; +} + +#endif /* CONFIG_MODULES */ + struct lwtunnel_state *lwtunnel_state_alloc(int encap_len) { struct lwtunnel_state *lws; @@ -85,6 +110,18 @@ int lwtunnel_build_state(struct net_device *dev, u16 encap_type, ret = -EOPNOTSUPP; rcu_read_lock(); ops = rcu_dereference(lwtun_encaps[encap_type]); +#ifdef CONFIG_MODULES + if (!ops) { + const char *encap_type_str = lwtunnel_encap_str(encap_type); + + if (encap_type_str) { + rcu_read_unlock(); + request_module("rtnl-lwt-%s", encap_type_str); + rcu_read_lock(); + ops = rcu_dereference(lwtun_encaps[encap_type]); + } + } +#endif if (likely(ops && ops->build_state)) ret = ops->build_state(dev, encap, family, cfg, lws); rcu_read_unlock(); |