/*
 * Copyright 2015, Sam Bobroff, IBM Corp.
 * Licensed under GPLv2.
 *
 * Test the kernel's system call code to ensure that a system call
 * made from within an active HTM transaction is aborted with the
 * correct failure code.
 * Conversely, ensure that a system call made from within a
 * suspended transaction can succeed.
 */

#include <stdio.h>
#include <unistd.h>
#include <sys/syscall.h>
#include <asm/tm.h>
#include <sys/time.h>
#include <stdlib.h>

#include "utils.h"
#include "tm.h"

extern int getppid_tm_active(void);
extern int getppid_tm_suspended(void);

unsigned retries = 0;

#define TEST_DURATION 10 /* seconds */
#define TM_RETRIES 100

pid_t getppid_tm(bool suspend)
{
	int i;
	pid_t pid;

	for (i = 0; i < TM_RETRIES; i++) {
		if (suspend)
			pid = getppid_tm_suspended();
		else
			pid = getppid_tm_active();

		if (pid >= 0)
			return pid;

		if (failure_is_persistent()) {
			if (failure_is_syscall())
				return -1;

			printf("Unexpected persistent transaction failure.\n");
			printf("TEXASR 0x%016lx, TFIAR 0x%016lx.\n",
			       __builtin_get_texasr(), __builtin_get_tfiar());
			exit(-1);
		}

		retries++;
	}

	printf("Exceeded limit of %d temporary transaction failures.\n", TM_RETRIES);
	printf("TEXASR 0x%016lx, TFIAR 0x%016lx.\n",
	       __builtin_get_texasr(), __builtin_get_tfiar());

	exit(-1);
}

int tm_syscall(void)
{
	unsigned count = 0;
	struct timeval end, now;

	SKIP_IF(!have_htm_nosc());

	setbuf(stdout, NULL);

	printf("Testing transactional syscalls for %d seconds...\n", TEST_DURATION);

	gettimeofday(&end, NULL);
	now.tv_sec = TEST_DURATION;
	now.tv_usec = 0;
	timeradd(&end, &now, &end);

	for (count = 0; timercmp(&now, &end, <); count++) {
		/*
		 * Test a syscall within a suspended transaction and verify
		 * that it succeeds.
		 */
		FAIL_IF(getppid_tm(true) == -1); /* Should succeed. */

		/*
		 * Test a syscall within an active transaction and verify that
		 * it fails with the correct failure code.
		 */
		FAIL_IF(getppid_tm(false) != -1);  /* Should fail... */
		FAIL_IF(!failure_is_persistent()); /* ...persistently... */
		FAIL_IF(!failure_is_syscall());    /* ...with code syscall. */
		gettimeofday(&now, 0);
	}

	printf("%d active and suspended transactions behaved correctly.\n", count);
	printf("(There were %d transaction retries.)\n", retries);

	return 0;
}

int main(void)
{
	return test_harness(tm_syscall, "tm_syscall");
}
e</option>
</select>
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</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=c67b42f3a3f03e68bf915f32c8f7be0b726fec1a&amp;showmsg=1'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?id=c67b42f3a3f03e68bf915f32c8f7be0b726fec1a&amp;showmsg=1'>net</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net?id=c67b42f3a3f03e68bf915f32c8f7be0b726fec1a'>Collapse</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr class='logheader'><td><span title='2017-02-02 12:49:58 -0800'>2017-02-02</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=1fc576b82b96d9bb033ff0098e1c0bf68de282b2'>Merge tag 'nfsd-4.10-2' of git://linux-nfs.org/~bfields/linux</a></td><td>Linus Torvalds</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+1</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
Pull nfsd fixes from Bruce Fields:
 "Three more miscellaneous nfsd bugfixes"

* tag 'nfsd-4.10-2' of git://linux-nfs.org/~bfields/linux:
  svcrpc: fix oops in absence of krb5 module
  nfsd: special case truncates some more
  NFSD: Fix a null reference case in find_or_create_lock_stateid()


</td></tr>
<tr class='logheader'><td><span title='2017-02-01 11:52:27 -0800'>2017-02-01</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=6d04dfc8966019b8b0977b2cb942351f13d2b178'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net</a></td><td>Linus Torvalds</td><td>10</td><td><span class='deletions'>-103</span>/<span class='insertions'>+86</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
Pull networking fixes from David Miller:

 1) Fix handling of interrupt status in stmmac driver. Just because we
    have masked the event from generating interrupts, doesn't mean the
    bit won't still be set in the interrupt status register. From Alexey
    Brodkin.

 2) Fix DMA API debugging splats in gianfar driver, from Arseny Solokha.

 3) Fix off-by-one error in __ip6_append_data(), from Vlad Yasevich.

 4) cls_flow does not match on icmpv6 codes properly, from Simon Horman.

 5) Initial MAC address can be set incorrectly in some scenerios, from
    Ivan Vecera.

 6) Packet header pointer arithmetic fix in ip6_tnl_parse_tlv_end_lim(),
    from Dan Carpenter.

 7) Fix divide by zero in __tcp_select_window(), from Eric Dumazet.

 8) Fix crash in iwlwifi when unregistering thermal zone, from Jens
    Axboe.

 9) Check for DMA mapping errors in starfire driver, from Alexey
    Khoroshilov.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (31 commits)
  tcp: fix 0 divide in __tcp_select_window()
  ipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim()
  net: fix ndo_features_check/ndo_fix_features comment ordering
  net/sched: matchall: Fix configuration race
  be2net: fix initial MAC setting
  ipv6: fix flow labels when the traffic class is non-0
  net: thunderx: avoid dereferencing xcv when NULL
  net/sched: cls_flower: Correct matching on ICMPv6 code
  ipv6: Paritially checksum full MTU frames
  net/mlx4_core: Avoid command timeouts during VF driver device shutdown
  gianfar: synchronize DMA API usage by free_skb_rx_queue w/ gfar_new_page
  net: ethtool: add support for 2500BaseT and 5000BaseT link modes
  can: bcm: fix hrtimer/tasklet termination in bcm op removal
  net: adaptec: starfire: add checks for dma mapping errors
  net: phy: micrel: KSZ8795 do not set SUPPORTED_[Asym_]Pause
  can: Fix kernel panic at security_sock_rcv_skb
  net: macb: Fix 64 bit addressing support for GEM
  stmmac: Discard masked flags in interrupt status register
  net/mlx5e: Check ets capability before ets query FW command
  net/mlx5e: Fix update of hash function/key via ethtool
  ...


</td></tr>
<tr class='logheader'><td><span title='2017-02-01 12:55:42 -0500'>2017-02-01</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=06425c308b92eaf60767bc71d359f4cbc7a561f8'>tcp: fix 0 divide in __tcp_select_window()</a></td><td>Eric Dumazet</td><td>1</td><td><span class='deletions'>-2</span>/<span class='insertions'>+4</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
syszkaller fuzzer was able to trigger a divide by zero, when
TCP window scaling is not enabled.

SO_RCVBUF can be used not only to increase sk_rcvbuf, also
to decrease it below current receive buffers utilization.

If mss is negative or 0, just return a zero TCP window.

Signed-off-by: Eric Dumazet &lt;edumazet@google.com&gt;
Reported-by: Dmitry Vyukov  &lt;dvyukov@google.com&gt;
Acked-by: Neal Cardwell &lt;ncardwell@google.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>
<tr class='logheader'><td><span title='2017-02-01 12:27:33 -0500'>2017-02-01</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=63117f09c768be05a0bf465911297dc76394f686'>ipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim()</a></td><td>Dan Carpenter</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+1</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
Casting is a high precedence operation but "off" and "i" are in terms of
bytes so we need to have some parenthesis here.

Fixes: fbfa743a9d2a ("ipv6: fix ip6_tnl_parse_tlv_enc_lim()")
Signed-off-by: Dan Carpenter &lt;dan.carpenter@oracle.com&gt;
Acked-by: Eric Dumazet &lt;edumazet@google.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>
<tr class='logheader'><td><span title='2017-02-01 11:57:33 -0500'>2017-02-01</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/net?id=fd62d9f5c575f0792f150109f1fd24a0d4b3f854'>net/sched: matchall: Fix configuration race</a></td><td>Yotam Gigi</td><td>1</td><td><span class='deletions'>-82</span>/<span class='insertions'>+45</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
In the current version, the matchall internal state is split into two
structs: cls_matchall_head and cls_matchall_filter. This makes little
sense, as matchall instance supports only one filter, and there is no
situation where one exists and the other does not. In addition, that led
to some races when filter was deleted while packet was processed.

Unify that two structs into one, thus simplifying the process of matchall
creation and deletion. As a result, the new, delete and get callbacks have
a dummy implementation where all the work is done in destroy and change
callbacks, as was done in cls_cgroup.

Fixes: bf3994d2ed31 ("net/sched: introduce Match-all classifier")
Reported-by: Daniel Borkmann &lt;daniel@iogearbox.net&gt;
Signed-off-by: Yotam Gigi &lt;yotamg@mellanox.com&gt;
Acked-by: Jiri Pirko &lt;jiri@mellanox.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>