From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netdev@vger.kernel.org
Cc: davem@davemloft.net, laforge@osmocom.org, pespin@sysmocom.de,
osmith@sysmocom.de, kuba@kernel.org, pabeni@redhat.com,
edumazet@google.com, fw@strlen.de
Subject: [PATCH net-next 06/12] gtp: pass up link local traffic to userspace socket
Date: Thu, 25 Apr 2024 12:51:32 +0200 [thread overview]
Message-ID: <20240425105138.1361098-7-pablo@netfilter.org> (raw)
In-Reply-To: <20240425105138.1361098-1-pablo@netfilter.org>
According to TS 29.061, it is possible to see IPv6 link-local traffic in
the GTP tunnel, see 11.2.1.3.2 IPv6 Stateless Address Autoconfiguration
(IPv6 SLAAC).
Pass up these packets to the userspace daemon to handle them as control
GTP traffic.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
drivers/net/gtp.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c
index ca3b1df19e6d..52f4aeecb8f8 100644
--- a/drivers/net/gtp.c
+++ b/drivers/net/gtp.c
@@ -251,6 +251,10 @@ static bool gtp_check_ms_ipv6(struct sk_buff *skb, struct pdp_ctx *pctx,
ip6h = (struct ipv6hdr *)(skb->data + hdrlen);
+ if ((ipv6_addr_type(&ip6h->saddr) & IPV6_ADDR_LINKLOCAL) ||
+ (ipv6_addr_type(&ip6h->daddr) & IPV6_ADDR_LINKLOCAL))
+ return false;
+
if (role == GTP_ROLE_SGSN) {
ret = ipv6_pdp_addr_equal(&ip6h->daddr, &pctx->ms.addr6);
} else {
--
2.30.2
next prev parent reply other threads:[~2024-04-25 10:51 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-25 10:51 [PATCH net-next 00/12] gtp updates for net-next (v2) Pablo Neira Ayuso
2024-04-25 10:51 ` [PATCH net-next 01/12] gtp: remove useless initialization Pablo Neira Ayuso
2024-04-25 10:51 ` [PATCH net-next 02/12] gtp: properly parse extension headers Pablo Neira Ayuso
2024-04-26 20:28 ` Simon Horman
2024-05-02 10:36 ` Pablo Neira Ayuso
2024-04-25 10:51 ` [PATCH net-next 03/12] gtp: prepare for IPv6 support Pablo Neira Ayuso
2024-04-25 10:51 ` [PATCH net-next 04/12] gtp: add " Pablo Neira Ayuso
2024-04-26 20:41 ` Simon Horman
2024-05-02 10:38 ` Pablo Neira Ayuso
2024-04-25 10:51 ` [PATCH net-next 05/12] gtp: use IPv6 address /64 prefix for UE/MS Pablo Neira Ayuso
2024-04-25 10:51 ` Pablo Neira Ayuso [this message]
2024-04-25 10:51 ` [PATCH net-next 07/12] gtp: move debugging to skbuff build helper function Pablo Neira Ayuso
2024-04-25 10:51 ` [PATCH net-next 08/12] gtp: remove IPv4 and IPv6 header from context object Pablo Neira Ayuso
2024-04-25 10:51 ` [PATCH net-next 09/12] gtp: add helper function to build GTP packets from an IPv4 packet Pablo Neira Ayuso
2024-04-25 10:51 ` [PATCH net-next 10/12] gtp: add helper function to build GTP packets from an IPv6 packet Pablo Neira Ayuso
2024-04-25 10:51 ` [PATCH net-next 11/12] gtp: support for IPv4-in-IPv6-GTP and IPv6-in-IPv4-GTP Pablo Neira Ayuso
2024-04-25 10:51 ` [PATCH net-next 12/12] gtp: identify tunnel via GTP device + GTP version + TEID + family Pablo Neira Ayuso
2024-04-26 2:29 ` [PATCH net-next 00/12] gtp updates for net-next (v2) Jakub Kicinski
-- strict thread matches above, loose matches on Subject: below --
2024-04-23 22:39 [PATCH net-next 00/12] GTP driver updates for net-next Pablo Neira Ayuso
2024-04-23 22:39 ` [PATCH net-next 06/12] gtp: pass up link local traffic to userspace socket Pablo Neira Ayuso
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