Mobility header is built by user-space and sent through raw socket.
Kernel just extracts its type to flow.
Based on MIPL2 kernel patch.
---
net/ipv6/raw.c | 17 +++++++++++++++++
1 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index e0faf4d..0e8dca2 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -608,6 +608,9 @@ static void rawv6_probe_proto_opt(struct
struct iovec *iov;
u8 __user *type = NULL;
u8 __user *code = NULL;
+#ifdef CONFIG_IPV6_MIP6
+ u8 len = 0;
+#endif
int probed = 0;
int i;
@@ -639,6 +642,20 @@ static void rawv6_probe_proto_opt(struct
probed = 1;
}
break;
+#ifdef CONFIG_IPV6_MIP6
+ case IPPROTO_MH:
+ if (iov->iov_base && iov->iov_len < 1)
+ break;
+ /* check if type field is readable or not. */
+ if (iov->iov_len > 2 - len) {
+ u8 __user *p = iov->iov_base;
+ get_user(fl->fl_mh_type, &p[2 - len]);
+ probed = 1;
+ } else
+ len += iov->iov_len;
+
+ break;
+#endif
default:
probed = 1;
break;
--
1.4.1
-
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