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2022-02-23mctp: make __mctp_dev_get() take a refcount holdMatt Johnston1-1/+0
Previously there was a race that could allow the mctp_dev refcount to hit zero: rcu_read_lock(); mdev = __mctp_dev_get(dev); // mctp_unregister() happens here, mdev->refs hits zero mctp_dev_hold(dev); rcu_read_unlock(); Now we make __mctp_dev_get() take the hold itself. It is safe to test against the zero refcount because __mctp_dev_get() is called holding rcu_read_lock and mctp_dev uses kfree_rcu(). Reported-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Matt Johnston <matt@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-09mctp: Allow keys matching any local addressJeremy Kerr1-0/+8
Currently, we require an exact match on an incoming packet's dest address, and the key's local_addr field. In a future change, we may want to set up a key before packets are routed, meaning we have no local address to match on. This change allows key lookups to match on local_addr = MCTP_ADDR_ANY. Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-09mctp: tests: Add key state testsJeremy Kerr1-0/+137
This change adds a few more tests to check the key/tag lookups on route input. We add a specific entry to the keys lists, route a packet with specific header values, and check for key match/mismatch. Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-02-09mctp: tests: Rename FL_T macro to FL_TOJeremy Kerr1-6/+6
This is a definition for the tag-owner flag, which has TO as a standard abbreviation. We'll want to add a helper for the actual tag value in a future change. Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-01-11mctp: test: zero out sockaddrMatt Johnston1-1/+1
MCTP now requires that padding bytes are zero. Signed-off-by: Matt Johnston <matt@codeconstruct.com.au> Fixes: 1e4b50f06d97 ("mctp: handle the struct sockaddr_mctp padding fields") Link: https://lore.kernel.org/r/20220110021806.2343023-1-matt@codeconstruct.com.au Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski1-1/+1
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-11-29mctp: test: fix skb free in test device txJeremy Kerr1-1/+1
In our test device, we're currently freeing skbs in the transmit path with kfree(), rather than kfree_skb(). This change uses the correct kfree_skb() instead. Fixes: ded21b722995 ("mctp: Add test utils") Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-11-18mctp/test: Update refcount checking in route fragment testsJeremy Kerr1-5/+0
In 99ce45d5e, we moved a route refcount decrement from mctp_do_fragment_route into the caller. This invalidates the assumption that the route test makes about refcount behaviour, so the route tests fail. This change fixes the test case to suit the new refcount behaviour. Fixes: 99ce45d5e7db ("mctp: Implement extended addressing") Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-03mctp: Add input reassembly testsJeremy Kerr1-0/+134
Add multi-packet route input tests, for message reassembly. These will feed packets to be received by a bound socket, or dropped. Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-03mctp: Add route input to socket testsJeremy Kerr1-0/+132
Add a few tests for single-packet route inputs, testing the mctp_route_input function. Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-03mctp: Add packet rx testsJeremy Kerr1-3/+64
Add a few tests for the initial packet ingress through mctp_pkttype_receive function; mainly packet header sanity checks. Full input routing checks will be added as a separate change. Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-03mctp: Add test utilsJeremy Kerr2-0/+87
Add a new object for shared test utilities Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-03mctp: Add initial test structure and fragmentation testJeremy Kerr1-0/+217
This change adds the first kunit test for the mctp subsystem, and an initial test for the fragmentation path. We're adding tests under a new net/mctp/test/ directory. Incorporates a fix for module configs: Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-01Revert "Merge branch 'mctp-kunit-tests'"David S. Miller3-619/+0
This reverts commit 4f42ad2011d2fcbd89f5cdf56121271a8cd5ee5d, reversing changes made to ea2dd331bfaaeba74ba31facf437c29044f7d4cb. These chanfges break the build when mctp is modular. Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-01mctp: Add input reassembly testsJeremy Kerr1-0/+134
Add multi-packet route input tests, for message reassembly. These will feed packets to be received by a bound socket, or dropped. Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-01mctp: Add route input to socket testsJeremy Kerr1-0/+131
Add a few tests for single-packet route inputs, testing the mctp_route_input function. Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-01mctp: Add packet rx testsJeremy Kerr1-3/+64
Add a few tests for the initial packet ingress through mctp_pkttype_receive function; mainly packet header sanity checks. Full input routing checks will be added as a separate change. Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-01mctp: Add test utilsJeremy Kerr2-0/+87
Add a new object for shared test utilities Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-10-01mctp: Add initial test structure and fragmentation testJeremy Kerr1-0/+206
This change adds the first kunit test for the mctp subsystem, and an initial test for the fragmentation path. We're adding tests under a new net/mctp/test/ directory. Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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