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| author | Christian Langrock <christian.langrock@secunet.com> | 2022-10-17 09:34:47 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-02 19:39:58 +0300 |
| commit | 51969d679ba4567e10f6c15061d1dad1063406e7 (patch) | |
| tree | 5d43cd427d340fe7b4b5a6f573e0bf4eadf70f8c /net/ipv4 | |
| parent | 497653f6d2392c8d4abb041f01e1a19781d995d0 (diff) | |
| download | linux-51969d679ba4567e10f6c15061d1dad1063406e7.tar.xz | |
xfrm: replay: Fix ESN wrap around for GSO
[ Upstream commit 4b549ccce941798703f159b227aa28c716aa78fa ]
When using GSO it can happen that the wrong seq_hi is used for the last
packets before the wrap around. This can lead to double usage of a
sequence number. To avoid this, we should serialize this last GSO
packet.
Fixes: d7dbefc45cf5 ("xfrm: Add xfrm_replay_overflow functions for offloading")
Co-developed-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Christian Langrock <christian.langrock@secunet.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/esp4_offload.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv4/esp4_offload.c b/net/ipv4/esp4_offload.c index 3450c9ba2728..84257678160a 100644 --- a/net/ipv4/esp4_offload.c +++ b/net/ipv4/esp4_offload.c @@ -312,6 +312,9 @@ static int esp_xmit(struct xfrm_state *x, struct sk_buff *skb, netdev_features_ xo->seq.low += skb_shinfo(skb)->gso_segs; } + if (xo->seq.low < seq) + xo->seq.hi++; + esp.seqno = cpu_to_be64(seq + ((u64)xo->seq.hi << 32)); ip_hdr(skb)->tot_len = htons(skb->len); |