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Message-ID: <20240905165140.3105140-13-idosch@nvidia.com>
Date: Thu, 5 Sep 2024 19:51:40 +0300
From: Ido Schimmel <idosch@...dia.com>
To: <netdev@...r.kernel.org>
CC: <davem@...emloft.net>, <kuba@...nel.org>, <pabeni@...hat.com>,
<edumazet@...gle.com>, <dsahern@...nel.org>, <gnault@...hat.com>,
<razor@...ckwall.org>, <pablo@...filter.org>, <kadlec@...filter.org>,
<marcelo.leitner@...il.com>, <lucien.xin@...il.com>,
<bridge@...ts.linux.dev>, <netfilter-devel@...r.kernel.org>,
<coreteam@...filter.org>, <linux-sctp@...r.kernel.org>,
<bpf@...r.kernel.org>, Ido Schimmel <idosch@...dia.com>
Subject: [PATCH net-next 12/12] sctp: Unmask upper DSCP bits in sctp_v4_get_dst()
Unmask the upper DSCP bits when calling ip_route_output_key() so that in
the future it could perform the FIB lookup according to the full DSCP
value.
Note that the 'tos' variable holds the full DS field.
Signed-off-by: Ido Schimmel <idosch@...dia.com>
---
net/sctp/protocol.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 5a7436a13b74..39ca5403d4d7 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -44,6 +44,7 @@
#include <net/inet_common.h>
#include <net/inet_ecn.h>
#include <net/udp_tunnel.h>
+#include <net/inet_dscp.h>
#define MAX_SCTP_PORT_HASH_ENTRIES (64 * 1024)
@@ -435,7 +436,7 @@ static void sctp_v4_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
fl4->fl4_dport = daddr->v4.sin_port;
fl4->flowi4_proto = IPPROTO_SCTP;
if (asoc) {
- fl4->flowi4_tos = RT_TOS(tos);
+ fl4->flowi4_tos = tos & INET_DSCP_MASK;
fl4->flowi4_scope = ip_sock_rt_scope(asoc->base.sk);
fl4->flowi4_oif = asoc->base.sk->sk_bound_dev_if;
fl4->fl4_sport = htons(asoc->base.bind_addr.port);
--
2.46.0
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