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| author |   David Lebrun <david.lebrun@uclouvain.be> | 2017-08-05 12:38:24 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-08-07 14:16:21 -0700 |
| commit | 925615ceda94532ba612e641549c7b1e41ebff10 (patch) | |
| tree | 1374063b52a06890df93237df688d68405c0af0f /net/ipv6/seg6.c | |
| parent | bpf: devmap fix mutex in rcu critical section (diff) | |
| download | linux-dev-925615ceda94532ba612e641549c7b1e41ebff10.tar.xz linux-dev-925615ceda94532ba612e641549c7b1e41ebff10.zip | |
ipv6: sr: allow SRH insertion with arbitrary segments_left value
The seg6_validate_srh() function only allows SRHs whose active segment is
the first segment of the path. However, an application may insert an SRH
whose active segment is not the first one. Such an application might be
for example an SR-aware Virtual Network Function.
This patch enables to insert SRHs with an arbitrary active segment.
Signed-off-by: David Lebrun <david.lebrun@uclouvain.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/seg6.c')
| -rw-r--r-- | net/ipv6/seg6.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/seg6.c b/net/ipv6/seg6.c index 15fba55e3da8..81c2339b3285 100644 --- a/net/ipv6/seg6.c +++ b/net/ipv6/seg6.c @@ -40,7 +40,7 @@ bool seg6_validate_srh(struct ipv6_sr_hdr *srh, int len) if (((srh->hdrlen + 1) << 3) != len) return false; - if (srh->segments_left != srh->first_segment) + if (srh->segments_left > srh->first_segment) return false; tlv_offset = sizeof(*srh) + ((srh->first_segment + 1) << 4); |