linux

iv/linux

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Jakub Sitnicki 436864095a selftests/net: Interpret UDP_GRO cmsg data as an int value

Data passed to user-space with a (SOL_UDP, UDP_GRO) cmsg carries an
int (see udp_cmsg_recv), not a u16 value, as strace confirms:

  recvmsg(8, {msg_name=...,
              msg_iov=[{iov_base="\0\0..."..., iov_len=96000}],
              msg_iovlen=1,
              msg_control=[{cmsg_len=20,         <-- sizeof(cmsghdr) + 4
                            cmsg_level=SOL_UDP,
                            cmsg_type=0x68}],    <-- UDP_GRO
                            msg_controllen=24,
                            msg_flags=0}, 0) = 11200

Interpreting the data as an u16 value won't work on big-endian platforms.
Since it is too late to back out of this API decision [1], fix the test.

[1]: https://lore.kernel.org/netdev/20230131174601.203127-1-jakub@cloudflare.com/

Fixes: 3327a9c46352 ("selftests: add functionals test for UDP GRO")
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2023-02-20 08:27:07 +00:00

accounting

tools/accounting/procacct: remove some unused variables

2022-11-18 13:55:09 -08:00

arch

tools headers arm64: Sync arm64's cputype.h with the kernel sources

2023-01-18 10:07:42 -03:00

bootconfig

…

bpf

bpftool: Fix linkage with statically built libllvm

2022-12-22 20:09:43 +01:00