diff options
| author | Daniel Axtens <dja@axtens.net> | 2019-02-14 11:31:17 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-20 10:20:48 +0100 |
| commit | 785644d6731914407b87e70db00aca351a44a935 (patch) | |
| tree | 584631289f55fcbd4d1c1726cc98300b6f9954dd /net/sched | |
| parent | dee92bc8c2761373b88f67bba87393ac50d8ceda (diff) | |
net: create skb_gso_validate_mac_len()
commit 2b16f048729bf35e6c28a40cbfad07239f9dcd90 upstream
If you take a GSO skb, and split it into packets, will the MAC
length (L2 + L3 + L4 headers + payload) of those packets be small
enough to fit within a given length?
Move skb_gso_mac_seglen() to skbuff.h with other related functions
like skb_gso_network_seglen() so we can use it, and then create
skb_gso_validate_mac_len to do the full calculation.
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
[jwang: cherry pick for CVE-2018-1000026]
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/sched')
| -rw-r--r-- | net/sched/sch_tbf.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c index b36ecb58aa6e..107cc76b6e24 100644 --- a/net/sched/sch_tbf.c +++ b/net/sched/sch_tbf.c @@ -142,16 +142,6 @@ static u64 psched_ns_t2l(const struct psched_ratecfg *r, return len; } -/* - * Return length of individual segments of a gso packet, - * including all headers (MAC, IP, TCP/UDP) - */ -static unsigned int skb_gso_mac_seglen(const struct sk_buff *skb) -{ - unsigned int hdr_len = skb_transport_header(skb) - skb_mac_header(skb); - return hdr_len + skb_gso_transport_seglen(skb); -} - /* GSO packet is too big, segment it so that tbf can transmit * each segment in time */ |