On 11/10/17 8:04 AM, Vlad Dumitrescu wrote:
From: Vlad Dumitrescu <vla...@google.com>Allows BPF_PROG_TYPE_SOCK_OPS programs to read sk_priority. Signed-off-by: Vlad Dumitrescu <vla...@google.com> --- net/core/filter.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/net/core/filter.c b/net/core/filter.c index 1afa17935954..61c791f9f628 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -3292,8 +3292,20 @@ BPF_CALL_5(bpf_getsockopt, struct bpf_sock_ops_kern *, bpf_sock, if (!sk_fullsock(sk)) goto err_clear; + if (level == SOL_SOCKET) { + if (optlen != sizeof(int)) + goto err_clear; + + switch (optname) { + case SO_PRIORITY: + *((int *)optval) = sk->sk_priority;
would be cleaner to add sk_priority to 'struct bpf_sock_ops' instead. Faster runtime too.
