git: network - MP socket free & abort interactions, so_state
commit 6cef7136f04e2b24a6db289e78720d6d8c60274e
Author: Matthew Dillon <dillon@apollo.backplane.com>
Date: Thu Sep 9 21:01:20 2010 -0700
network - MP socket free & abort interactions, so_state
* Add so_refs and ref-count the socket structure to deal with
MP races on sofree().
* Ref the socket structure for all soabort() operations (they are usually
asynchronous). The netmsg_pru_abort() handler will sofree() the ref
after calling the protocol stack's abort function.
* Use atomic ops to set and clear bits in so_state, because it is modified
by both the fronttend and the backend.
* Remove numerous critical sections that are no longer effective.
* Protect the accept queues with so_rcv.ssb_token.
* Protect after-the-fact calls to soisdisconnected() with a soreference()
to avoid use-after-free cases.
* Wrap unix domain, mroute, div, raw, and key sockets/protocols with their
own private tokens.
Summary of changes:
sys/ddb/db_output.c | 2 +
sys/kern/sys_generic.c | 5 +
sys/kern/sys_socket.c | 5 +-
sys/kern/uipc_mbuf.c | 2 +-
sys/kern/uipc_msg.c | 16 +-
sys/kern/uipc_socket.c | 133 +++----
sys/kern/uipc_socket2.c | 73 +++--
sys/kern/uipc_syscalls.c | 11 +-
sys/kern/uipc_usrreq.c | 406 +++++++++++++++-----
sys/net/ip_mroute/ip_mroute.c | 153 ++++----
sys/net/raw_cb.c | 5 +-
sys/net/raw_usrreq.c | 10 +-
sys/net/rtsock.c | 3 +
sys/netbt/hci_socket.c | 15 +-
sys/netbt/l2cap_socket.c | 8 +-
sys/netbt/rfcomm_socket.c | 8 +-
sys/netbt/sco_socket.c | 8 +-
sys/netgraph/ksocket/ng_ksocket.c | 22 +-
sys/netgraph/socket/ng_socket.c | 7 +-
.../bluetooth/socket/ng_btsocket_rfcomm.c | 10 +-
sys/netgraph7/ng_ksocket.c | 8 +-
sys/netgraph7/ng_socket.c | 8 +-
sys/netinet/in_pcb.c | 5 +-
sys/netinet/ip_divert.c | 38 ++-
sys/netinet/raw_ip.c | 60 +++-
sys/netinet/sctp_indata.c | 12 +
sys/netinet/sctp_input.c | 2 +-
sys/netinet/sctp_pcb.c | 31 +--
sys/netinet/sctp_peeloff.c | 4 +-
sys/netinet/sctp_usrreq.c | 21 +-
sys/netinet/sctputil.c | 27 ++
sys/netinet/tcp_input.c | 25 +-
sys/netinet/tcp_subr.c | 1 +
sys/netinet/tcp_usrreq.c | 60 ++--
sys/netinet/udp_usrreq.c | 40 +-
sys/netinet6/in6_pcb.c | 2 +-
sys/netinet6/ipsec.c | 12 +
sys/netinet6/raw_ip6.c | 19 +-
sys/netinet6/sctp6_usrreq.c | 22 +-
sys/netinet6/udp6_usrreq.c | 25 +-
sys/netproto/atalk/ddp_usrreq.c | 45 +--
sys/netproto/atm/atm_aal5.c | 3 +-
sys/netproto/atm/atm_socket.c | 2 +-
sys/netproto/ipsec/keysock.c | 4 +-
sys/netproto/ipx/ipx_pcb.c | 3 +-
sys/netproto/ipx/ipx_usrreq.c | 27 +-
sys/netproto/ipx/spx_usrreq.c | 11 +-
sys/netproto/key/key.c | 144 ++++---
sys/netproto/key/key.h | 1 +
sys/netproto/key/keydb.c | 9 +-
sys/netproto/key/keysock.c | 61 ++--
sys/netproto/natm/natm.c | 18 +-
sys/netproto/ncp/ncp_sock.c | 2 +-
sys/netproto/ns/idp_usrreq.c | 13 +-
sys/netproto/ns/ns_pcb.c | 2 +-
sys/netproto/ns/spp_usrreq.c | 11 +-
sys/netproto/smb/smb_trantcp.c | 2 +-
sys/sys/socketvar.h | 13 +-
sys/sys/socketvar2.h | 26 ++-
sys/vfs/fifofs/fifo_vnops.c | 3 +-
sys/vfs/nfs/nfs_socket.c | 3 +-
61 files changed, 1107 insertions(+), 620 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/6cef7136f04e2b24a6db289e78720d6d8c60274e
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