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| H A D | ip_tunnel_core.c | fda4fde2 Thu Jan 07 08:40:08 CST 2021 Julian Wiedmann <jwi@linux.ibm.com> net: ip_tunnel: clean up endianness conversions
sparse complains about some harmless endianness issues:
> net/ipv4/ip_tunnel_core.c:225:43: warning: cast to restricted __be16
> net/ipv4/ip_tunnel_core.c:225:43: warning: incorrect type in initializer (different base types)
> net/ipv4/ip_tunnel_core.c:225:43: expected restricted __be16 [usertype] mtu
> net/ipv4/ip_tunnel_core.c:225:43: got unsigned short [usertype]
iptunnel_pmtud_build_icmp() uses the wrong flavour of byte-order conversion
when storing the MTU into the ICMPv4 packet. Use htons(), just like
iptunnel_pmtud_build_icmpv6() does.
> net/ipv4/ip_tunnel_core.c:248:35: warning: cast from restricted __be16
> net/ipv4/ip_tunnel_core.c:248:35: warning: incorrect type in argument 3 (different base types)
> net/ipv4/ip_tunnel_core.c:248:35: expected unsigned short type
> net/ipv4/ip_tunnel_core.c:248:35: got restricted __be16 [usertype]
> net/ipv4/ip_tunnel_core.c:341:35: warning: cast from restricted __be16
> net/ipv4/ip_tunnel_core.c:341:35: warning: incorrect type in argument 3 (different base types)
> net/ipv4/ip_tunnel_core.c:341:35: expected unsigned short type
> net/ipv4/ip_tunnel_core.c:341:35: got restricted __be16 [usertype]
eth_header() wants the Ethertype in host-order, use the correct flavour of
byte-order conversion.
> net/ipv4/ip_tunnel_core.c:600:45: warning: restricted __be16 degrades to integer
> net/ipv4/ip_tunnel_core.c:609:30: warning: incorrect type in assignment (different base types)
> net/ipv4/ip_tunnel_core.c:609:30: expected int type
> net/ipv4/ip_tunnel_core.c:609:30: got restricted __be16 [usertype]
> net/ipv4/ip_tunnel_core.c:619:30: warning: incorrect type in assignment (different base types)
> net/ipv4/ip_tunnel_core.c:619:30: expected int type
> net/ipv4/ip_tunnel_core.c:619:30: got restricted __be16 [usertype]
> net/ipv4/ip_tunnel_core.c:629:30: warning: incorrect type in assignment (different base types)
> net/ipv4/ip_tunnel_core.c:629:30: expected int type
> net/ipv4/ip_tunnel_core.c:629:30: got restricted __be16 [usertype]
The TUNNEL_* types are big-endian, so adjust the type of the local
variable in ip_tun_parse_opts().
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Link: https://lore.kernel.org/r/20210107144008.25777-1-jwi@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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