netdev - [PATCH net-next v3 0/4] ip: Support checksum returned in csmg

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Mon,  5 Jan 2015 13:56:13 -0800
From:	Tom Herbert <therbert@...gle.com>
To:	davem@...emloft.net, netdev@...r.kernel.org
Subject: [PATCH net-next v3 0/4] ip: Support checksum returned in csmg

This patch set allows the packet checksum for a datagram socket
to be returned in csum data in recvmsg. This allows userspace
to implement its own checksum over the data, for instance if an
IP tunnel was be implemented in user space, the inner checksum
could be validated.

Changes in this patch set:
  - Move checksum conversion to inet_sock from udp_sock. This
    generalizes checksum conversion for use with other protocols.
  - Move IP cmsg constants to a header file and make processing
    of the flags more efficient in ip_cmsg_recv
  - Return checksum value in cmsg. This is specifically the unfolded
    32 bit checksum of the full packet starting from the first byte
    returned in recvmsg

Tested: Wrote a little server to get checksums in cmsg for UDP and
        verfied correct checksum is returned.
        
Tom Herbert (4):
  ip: Move checksum convert defines to inet
  ip: IP cmsg cleanup
  ip: Add offset parameter to ip_cmsg_recv
  ip: Add offset parameter to ip_cmsg_recv

 include/linux/udp.h     |  16 +------
 include/net/inet_sock.h |  29 ++++++++++++-
 include/net/ip.h        |   7 +++-
 include/uapi/linux/in.h |   1 +
 net/ipv4/fou.c          |   2 +-
 net/ipv4/ip_sockglue.c  | 108 +++++++++++++++++++++++++++++++++++-------------
 net/ipv4/udp.c          |   4 +-
 net/ipv4/udp_tunnel.c   |   2 +-
 net/ipv6/udp.c          |   2 +-
 9 files changed, 120 insertions(+), 51 deletions(-)

-- 
2.2.0.rc0.207.ga3a616c

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html