Messages in this thread | | | Subject | Re: [PATCH] tcp: md5 signature check scaling | From | Eric Dumazet <> | Date | Wed, 27 Oct 2010 15:00:05 +0200 |
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Le mercredi 27 octobre 2010 à 16:52 +0400, Dmitry Popov a écrit : > From: Dmitry Popov <dp@highloadlab.com> > > TCP MD5 signature checking without socket lock. > > Each tcp_sock has 2 RCU-protected arrays (tcp[46]_md5sig_info) of > tcp[46]_md5sig_key address-key pairs. > Each key (tcp_md5sig_key) has kref struct so that there is no need to > lock the whole array to work with one key. > > MD5 functions were rewritten according to above statement and hash > check (tcp_v4_inbound_md5_hash) was moved before socket lock. > > Signed-off-by: Dmitry Popov <dp@highloadlab.com> > --- > include/linux/tcp.h | 14 ++- > include/net/tcp.h | 82 +++++++---- > net/ipv4/tcp_ipv4.c | 370 ++++++++++++++++++++++++++++------------------ > net/ipv4/tcp_minisocks.c | 26 +-- > net/ipv4/tcp_output.c | 12 +- > net/ipv6/tcp_ipv6.c | 358 +++++++++++++++++++++++++++----------------- > 6 files changed, 531 insertions(+), 331 deletions(-)
This is a huge patch :(
Reading changelog, I dont understand what you did, and why you did this.
You want to avoid taking the socket lock ? But we need to take it anyway to process packets.
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