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authorIdo Schimmel <idosch@nvidia.com>2024-08-21 15:52:41 +0300
committerJakub Kicinski <kuba@kernel.org>2024-08-23 02:59:56 +0300
commitbc52a4eecefdd686065f8f68ba9e1c83d4ce6f14 (patch)
treeed953f0c4bcaf184d38c4b163b780366b8995653 /net
parentef434fae72287a9cd0f7b85ad1701b998cce800b (diff)
downloadlinux-bc52a4eecefdd686065f8f68ba9e1c83d4ce6f14.tar.xz
ipv4: Unmask upper DSCP bits in NETLINK_FIB_LOOKUP family
The NETLINK_FIB_LOOKUP netlink family can be used to perform a FIB lookup according to user provided parameters and communicate the result back to user space. Unmask the upper DSCP bits of the user-provided DS field before invoking the IPv4 FIB lookup API so that in the future the lookup could be performed according to the full DSCP value. No functional changes intended since the upper DSCP bits are masked when comparing against the TOS selectors in FIB rules and routes. Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Guillaume Nault <gnault@redhat.com> Acked-by: Florian Westphal <fw@strlen.de> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/20240821125251.1571445-3-idosch@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/fib_frontend.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index da540ddb7af6..8b740f575da1 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -1343,7 +1343,7 @@ static void nl_fib_lookup(struct net *net, struct fib_result_nl *frn)
struct flowi4 fl4 = {
.flowi4_mark = frn->fl_mark,
.daddr = frn->fl_addr,
- .flowi4_tos = frn->fl_tos & IPTOS_RT_MASK,
+ .flowi4_tos = frn->fl_tos & INET_DSCP_MASK,
.flowi4_scope = frn->fl_scope,
};
struct fib_table *tb;