From: Steffen Klassert <steffen.klassert@secunet•com>
To: David Miller <davem@davemloft•net>
Cc: Herbert Xu <herbert@gondor•apana.org.au>,
Steffen Klassert <steffen.klassert@secunet•com>,
<netdev@vger•kernel.org>
Subject: [PATCH 12/15] esp6: calculate transport_header correctly when sel.family != AF_INET6
Date: Fri, 29 May 2020 13:04:05 +0200 [thread overview]
Message-ID: <20200529110408.6349-13-steffen.klassert@secunet.com> (raw)
In-Reply-To: <20200529110408.6349-1-steffen.klassert@secunet.com>
From: Xin Long <lucien.xin@gmail•com>
In esp6_init_state() for beet mode when x->sel.family != AF_INET6:
x->props.header_len = sizeof(struct ip_esp_hdr) +
crypto_aead_ivsize(aead) + IPV4_BEET_PHMAXLEN +
(sizeof(struct ipv6hdr) - sizeof(struct iphdr))
In xfrm6_beet_gso_segment() skb->transport_header is supposed to move
to the end of the ph header for IPPROTO_BEETPH, so if x->sel.family !=
AF_INET6 and it's IPPROTO_BEETPH, it should do:
skb->transport_header -=
(sizeof(struct ipv6hdr) - sizeof(struct iphdr));
skb->transport_header += ph->hdrlen * 8;
And IPV4_BEET_PHMAXLEN is only reserved for PH header, so if
x->sel.family != AF_INET6 and it's not IPPROTO_BEETPH, it should do:
skb->transport_header -=
(sizeof(struct ipv6hdr) - sizeof(struct iphdr));
skb->transport_header -= IPV4_BEET_PHMAXLEN;
Thanks Sabrina for looking deep into this issue.
Fixes: 7f9e40eb18a9 ("esp6: add gso_segment for esp6 beet mode")
Reported-by: Sabrina Dubroca <sd@queasysnail•net>
Signed-off-by: Xin Long <lucien.xin@gmail•com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet•com>
---
net/ipv6/esp6_offload.c | 27 +++++++++++++++------------
1 file changed, 15 insertions(+), 12 deletions(-)
diff --git a/net/ipv6/esp6_offload.c b/net/ipv6/esp6_offload.c
index 9c03460b2760..ab0eea336c70 100644
--- a/net/ipv6/esp6_offload.c
+++ b/net/ipv6/esp6_offload.c
@@ -175,24 +175,27 @@ static struct sk_buff *xfrm6_beet_gso_segment(struct xfrm_state *x,
skb->transport_header += x->props.header_len;
- if (proto == IPPROTO_BEETPH) {
- struct ip_beet_phdr *ph = (struct ip_beet_phdr *)skb->data;
+ if (x->sel.family != AF_INET6) {
+ skb->transport_header -=
+ (sizeof(struct ipv6hdr) - sizeof(struct iphdr));
- skb->transport_header += ph->hdrlen * 8;
- proto = ph->nexthdr;
- }
+ if (proto == IPPROTO_BEETPH) {
+ struct ip_beet_phdr *ph =
+ (struct ip_beet_phdr *)skb->data;
+
+ skb->transport_header += ph->hdrlen * 8;
+ proto = ph->nexthdr;
+ } else {
+ skb->transport_header -= IPV4_BEET_PHMAXLEN;
+ }
- if (x->sel.family == AF_INET6) {
+ if (proto == IPPROTO_TCP)
+ skb_shinfo(skb)->gso_type |= SKB_GSO_TCPV6;
+ } else {
__be16 frag;
skb->transport_header +=
ipv6_skip_exthdr(skb, 0, &proto, &frag);
- } else {
- skb->transport_header -=
- (sizeof(struct ipv6hdr) - sizeof(struct iphdr));
-
- if (proto == IPPROTO_TCP)
- skb_shinfo(skb)->gso_type |= SKB_GSO_TCPV6;
}
__skb_pull(skb, skb_transport_offset(skb));
--
2.17.1
next prev parent reply other threads:[~2020-05-29 11:10 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-29 11:03 pull request (net): ipsec 2020-05-29 Steffen Klassert
2020-05-29 11:03 ` [PATCH 01/15] xfrm: allow to accept packets with ipv6 NEXTHDR_HOP in xfrm_input Steffen Klassert
2020-05-29 11:03 ` [PATCH 02/15] xfrm: do pskb_pull properly in __xfrm_transport_prep Steffen Klassert
2020-05-29 11:03 ` [PATCH 03/15] esp6: get the right proto for transport mode in esp6_gso_encap Steffen Klassert
2020-05-29 11:03 ` [PATCH 04/15] xfrm: remove the xfrm_state_put call becofe going to out_reset Steffen Klassert
2020-05-29 11:03 ` [PATCH 05/15] xfrm: fix error in comment Steffen Klassert
2020-05-29 11:03 ` [PATCH 06/15] xfrm: espintcp: save and call old ->sk_destruct Steffen Klassert
2020-05-29 11:04 ` [PATCH 07/15] esp6: support ipv6 nexthdrs process for beet gso segment Steffen Klassert
2020-05-29 11:04 ` [PATCH 08/15] esp4: " Steffen Klassert
2020-05-29 11:04 ` [PATCH 09/15] xfrm: call xfrm_output_gso when inner_protocol is set in xfrm_output Steffen Klassert
2020-05-29 11:04 ` [PATCH 10/15] ip_vti: receive ipip packet by calling ip_tunnel_rcv Steffen Klassert
2020-05-29 11:04 ` [PATCH 11/15] xfrm interface: fix oops when deleting a x-netns interface Steffen Klassert
2020-05-29 11:04 ` Steffen Klassert [this message]
2020-05-29 11:04 ` [PATCH 13/15] esp4: improve xfrm4_beet_gso_segment() to be more readable Steffen Klassert
2020-05-29 11:04 ` [PATCH 14/15] xfrm: fix a warning in xfrm_policy_insert_list Steffen Klassert
2020-05-29 11:04 ` [PATCH 15/15] xfrm: fix a NULL-ptr deref in xfrm_local_error Steffen Klassert
2020-05-29 20:06 ` pull request (net): ipsec 2020-05-29 David Miller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200529110408.6349-13-steffen.klassert@secunet.com \
--to=steffen.klassert@secunet$(echo .)com \
--cc=davem@davemloft$(echo .)net \
--cc=herbert@gondor$(echo .)apana.org.au \
--cc=netdev@vger$(echo .)kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox