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| author | Antony Antony <antony@phenome.org> | 2017-06-06 12:12:14 +0200 |
|---|---|---|
| committer | Steffen Klassert <steffen.klassert@secunet.com> | 2017-06-07 08:35:54 +0200 |
| commit | 8bafd73093f2f431f5a363f8057abc0ccc118853 (patch) | |
| tree | 20af3529dd452d18819bbef145e0de1f37caa261 /net/xfrm/xfrm_user.c | |
| parent | 4ab47d47af20addd6ecee1ece0205b1fbf483942 (diff) | |
| download | linux-8bafd73093f2f431f5a363f8057abc0ccc118853.tar.bz2 | |
xfrm: add UDP encapsulation port in migrate message
Add XFRMA_ENCAP, UDP encapsulation port, to km_migrate announcement
to userland. Only add if XFRMA_ENCAP was in user migrate request.
Signed-off-by: Antony Antony <antony@phenome.org>
Reviewed-by: Richard Guy Briggs <rgb@tricolour.ca>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/xfrm/xfrm_user.c')
| -rw-r--r-- | net/xfrm/xfrm_user.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index fb98892f7d89..6197c7231bc7 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -2314,17 +2314,20 @@ static int copy_to_user_kmaddress(const struct xfrm_kmaddress *k, struct sk_buff return nla_put(skb, XFRMA_KMADDRESS, sizeof(uk), &uk); } -static inline size_t xfrm_migrate_msgsize(int num_migrate, int with_kma) +static inline size_t xfrm_migrate_msgsize(int num_migrate, int with_kma, + int with_encp) { return NLMSG_ALIGN(sizeof(struct xfrm_userpolicy_id)) + (with_kma ? nla_total_size(sizeof(struct xfrm_kmaddress)) : 0) + + (with_encp ? nla_total_size(sizeof(struct xfrm_encap_tmpl)) : 0) + nla_total_size(sizeof(struct xfrm_user_migrate) * num_migrate) + userpolicy_type_attrsize(); } static int build_migrate(struct sk_buff *skb, const struct xfrm_migrate *m, int num_migrate, const struct xfrm_kmaddress *k, - const struct xfrm_selector *sel, u8 dir, u8 type) + const struct xfrm_selector *sel, + const struct xfrm_encap_tmpl *encap, u8 dir, u8 type) { const struct xfrm_migrate *mp; struct xfrm_userpolicy_id *pol_id; @@ -2346,6 +2349,11 @@ static int build_migrate(struct sk_buff *skb, const struct xfrm_migrate *m, if (err) goto out_cancel; } + if (encap) { + err = nla_put(skb, XFRMA_ENCAP, sizeof(*encap), encap); + if (err) + goto out_cancel; + } err = copy_to_user_policy_type(type, skb); if (err) goto out_cancel; @@ -2365,17 +2373,19 @@ out_cancel: static int xfrm_send_migrate(const struct xfrm_selector *sel, u8 dir, u8 type, const struct xfrm_migrate *m, int num_migrate, - const struct xfrm_kmaddress *k) + const struct xfrm_kmaddress *k, + const struct xfrm_encap_tmpl *encap) { struct net *net = &init_net; struct sk_buff *skb; - skb = nlmsg_new(xfrm_migrate_msgsize(num_migrate, !!k), GFP_ATOMIC); + skb = nlmsg_new(xfrm_migrate_msgsize(num_migrate, !!k, !!encap), + GFP_ATOMIC); if (skb == NULL) return -ENOMEM; /* build migrate */ - if (build_migrate(skb, m, num_migrate, k, sel, dir, type) < 0) + if (build_migrate(skb, m, num_migrate, k, sel, encap, dir, type) < 0) BUG(); return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_MIGRATE); @@ -2383,7 +2393,8 @@ static int xfrm_send_migrate(const struct xfrm_selector *sel, u8 dir, u8 type, #else static int xfrm_send_migrate(const struct xfrm_selector *sel, u8 dir, u8 type, const struct xfrm_migrate *m, int num_migrate, - const struct xfrm_kmaddress *k) + const struct xfrm_kmaddress *k, + const struct xfrm_encap_tmpl *encap) { return -ENOPROTOOPT; } |