linux_dsm_epyc7002/net/dccp
Gerrit Renker 83399361c3 [CCID2]: Remove redundant synchronisation variable
This removes the synchronisation variable `ccid2hctx_sendwait', which is set to 1
when the CCID2 sender may send a new packet, and which is set to 0 otherwise

The variable is redundant, since it is only used in combination with the hc_tx_send_packet/
hc_tx_packet_sent function pair. Both functions are called under socket lock, so the
following happens when the CCID2 may send a new packet:

 * it sets sendwait = 1 in tx_send_packet and returns 0;
 * the subsequent call to tx_packet_sent clears the sendwait flag;
 * since tx_send_packet returns 0 if and only if sendwait == 1, the BUG_ON condition
   in tx_packet_sent is never satisfied, since that function is never called when
   tx_send_packet returns a value different from 0 (cf. dccp_write_xmit);
 * the call to tx_packet_sent clears the flag so that the condition "!sendwait" is
   true the next time tx_packet_sent is called.

In other words, it is sufficient to just return 0 / not-0 to synchronise tx_send_packet
and tx_packet_sent -- which is what the patch does.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Acked-by: Ian McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 14:54:59 -08:00
..
ccids [CCID2]: Remove redundant synchronisation variable 2008-01-28 14:54:59 -08:00
ackvec.c [ACKVEC]: Reduce length of identifiers 2008-01-28 14:54:51 -08:00
ackvec.h [ACKVEC]: Reduce length of identifiers 2008-01-28 14:54:51 -08:00
ccid.c [DCCP]: fix theoretical ccids_{read,write}_lock() race 2007-08-13 22:52:09 -07:00
ccid.h [DCCP] ccid: Deprecate ccid_hc_tx_insert_options 2006-12-11 14:34:49 -08:00
dccp.h [DCCP]: Factor out common code for generating Resets 2007-10-10 16:52:44 -07:00
diag.c [INET]: Let inet_diag and friends autoload 2007-10-22 02:59:54 -07:00
feat.c [DCCP]: fix memory leak and clean up style - dccp_feat_empty_confirm() 2007-08-13 22:52:10 -07:00
feat.h [NET] DCCP: Fix whitespace errors. 2007-02-10 23:19:27 -08:00
input.c [DCCP]: Honour and make use of shutdown option set by user 2008-01-28 14:54:44 -08:00
ipv4.c [DCCP]: Use DEFINE_PROTO_INUSE infrastructure. 2007-11-07 04:09:01 -08:00
ipv6.c [DCCP]: Use DEFINE_PROTO_INUSE infrastructure. 2007-11-07 04:09:01 -08:00
ipv6.h Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
Kconfig [DCCP]: Promote CCID2 as default CCID 2008-01-28 14:54:46 -08:00
Makefile [DCCPv6]: Resolve conditional build problem 2006-12-02 21:22:28 -08:00
minisocks.c [DCCP]: Tidy-up -- minisock initialisation 2007-10-10 16:54:36 -07:00
options.c [DCCP]: Ignore Ack Vectors / Elapsed Time on DCCP-Request also 2008-01-28 14:54:47 -08:00
output.c [DCCP]: Wait for CCID 2007-10-10 16:54:31 -07:00
probe.c [NET]: Make /proc/net per network namespace 2007-10-10 16:49:06 -07:00
proto.c [DCCP]: Initialize dccp_sock before calling the ccid constructors 2008-01-28 14:54:54 -08:00
sysctl.c [DCCP]: fix link error with !CONFIG_SYSCTL 2007-10-17 19:33:06 -07:00
timer.c [NET]: Convert init_timer into setup_timer 2008-01-28 14:53:35 -08:00