diff options
| author | Ido Schimmel <idosch@nvidia.com> | 2024-08-29 09:54:50 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2024-08-31 17:44:51 +0100 |
| commit | 4805646c42e51d2fbf142864d281473ad453ad5d (patch) | |
| tree | a93bb76252682bbcaa2bdf7465b86e4702ebe41c | |
| parent | a63cef46adcbedd4f4ea7401773a310edca53131 (diff) | |
ipv4: icmp: Unmask upper DSCP bits in icmp_route_lookup()
The function is called to resolve a route for an ICMP message that is
sent in response to a situation. Based on the type of the generated ICMP
message, the function is either passed the DS field of the packet that
generated the ICMP message or a DS field that is derived from it.
Unmask the upper DSCP bits before resolving and output route via
ip_route_output_key_hash() so that in the future the lookup could be
performed according to the full DSCP value.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/icmp.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c index 1ed88883e1f2..d2463b6e390e 100644 --- a/net/ipv4/icmp.c +++ b/net/ipv4/icmp.c @@ -93,6 +93,7 @@ #include <net/ip_fib.h> #include <net/l3mdev.h> #include <net/addrconf.h> +#include <net/inet_dscp.h> #define CREATE_TRACE_POINTS #include <trace/events/icmp.h> @@ -497,7 +498,7 @@ static struct rtable *icmp_route_lookup(struct net *net, fl4->saddr = saddr; fl4->flowi4_mark = mark; fl4->flowi4_uid = sock_net_uid(net, NULL); - fl4->flowi4_tos = RT_TOS(tos); + fl4->flowi4_tos = tos & INET_DSCP_MASK; fl4->flowi4_proto = IPPROTO_ICMP; fl4->fl4_icmp_type = type; fl4->fl4_icmp_code = code; |