diff options
| author | Jeremy Kerr <jk@codeconstruct.com.au> | 2024-02-19 12:51:54 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2024-02-22 15:32:55 +0300 |
| commit | 1394c1dec1c619a46867ed32791a29695372bff8 (patch) | |
| tree | 8158ab99710caf5a19bad1acc578a0b9901d0805 /net/mctp | |
| parent | 9acdc089c08884c1f1b4567efcd7290781ee8e3a (diff) | |
| download | linux-1394c1dec1c619a46867ed32791a29695372bff8.tar.xz | |
net: mctp: copy skb ext data when fragmenting
If we're fragmenting on local output, the original packet may contain
ext data for the MCTP flows. We'll want this in the resulting fragment
skbs too.
So, do a skb_ext_copy() in the fragmentation path, and implement the
MCTP-specific parts of an ext copy operation.
Fixes: 67737c457281 ("mctp: Pass flow data & flow release events to drivers")
Reported-by: Jian Zhang <zhangjian.3032@bytedance.com>
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net/mctp')
| -rw-r--r-- | net/mctp/route.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/mctp/route.c b/net/mctp/route.c index 28648a7ec866..34e513113509 100644 --- a/net/mctp/route.c +++ b/net/mctp/route.c @@ -905,6 +905,9 @@ static int mctp_do_fragment_route(struct mctp_route *rt, struct sk_buff *skb, /* copy message payload */ skb_copy_bits(skb, pos, skb_transport_header(skb2), size); + /* we need to copy the extensions, for MCTP flow data */ + skb_ext_copy(skb2, skb); + /* do route */ rc = rt->output(rt, skb2); if (rc) |