From: Willem de Bruijn <will...@google.com> Support peeking at a non-zero offset for UDP sockets. Match the existing behavior on Unix datagram sockets.
1/4 makes the sk_peek_offset functions safe to use outside locks 2/4 removes udp headers before enqueue, to simplify offset arithmetic 3/4 introduces SO_PEEK_OFFSET support 4/4 moves sk->sk_peek_off on read, to match Unix socket semantics. Willem de Bruijn (2): sock: convert sk_peek_offset functions to WRITE_ONCE udp: move peek offset on read and peek samanthakumar (2): udp: remove headers from UDP packets before queueing udp: enable MSG_PEEK at non-zero offset include/linux/skbuff.h | 7 ++++++- include/net/sock.h | 27 ++++++++++++++++----------- include/net/udp.h | 9 +++++++++ net/core/datagram.c | 9 ++++++--- net/core/sock.c | 28 ++++++++++++++++++++++------ net/ipv4/af_inet.c | 1 + net/ipv4/udp.c | 38 ++++++++++++++++++++------------------ net/ipv6/af_inet6.c | 1 + net/ipv6/udp.c | 30 ++++++++++++++++-------------- 9 files changed, 97 insertions(+), 53 deletions(-) -- 2.8.0.rc3.226.g39d4020
