)]}' { "log": [ { "commit": "1565c7c1c4c8e931bdba66abc8aa6f141a406872", "tree": "2e2f732e113faa24f4b0e7c804b37bf4283595c3", "parents": [ "bfb564e7391340638afe4ad67744a8f3858e7566" ], "author": { "name": "Krishna Kumar", "email": "krkumar2@in.ibm.com", "time": "Wed Aug 04 06:15:59 2010 +0000" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Mon Aug 16 21:06:25 2010 -0700" }, "message": "macvtap: Implement multiqueue for macvtap driver\n\nImplement multiqueue facility for macvtap driver. The idea is that\na macvtap device can be opened multiple times and the fd\u0027s can be\nused to register eg, as backend for vhost.\n\nSigned-off-by: Krishna Kumar \u003ckrkumar2@in.ibm.com\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "bb7e95c8fd859922c6cf3ebbb3a8546007df1748", "tree": "58b54c6306ba168b76f25cc6dc9a2d1d2eb830a7", "parents": [ "b8bc0421ab7f83712a0a8ef7eb05fa73ec53c027", "5447080cfa3c77154498dfbf225367ac85b4c2b5" ], "author": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Tue Jul 27 21:01:35 2010 -0700" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Tue Jul 27 21:01:35 2010 -0700" }, "message": "Merge branch \u0027master\u0027 of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6\n\nConflicts:\n\tdrivers/net/bnx2x_main.c\n\nMerge bnx2x bug fixes in by hand... :-/\n\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "8a35747a5d13b99e076b0222729e0caa48cb69b6", "tree": "387e2840fe46edd9cc36027cf188778f2c5ab1ff", "parents": [ "bded64a7ff82f6af56426a4ff2483888e5ad5fe9" ], "author": { "name": "Herbert Xu", "email": "herbert@gondor.apana.org.au", "time": "Wed Jul 21 21:44:31 2010 +0000" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Thu Jul 22 13:08:56 2010 -0700" }, "message": "macvtap: Limit packet queue length\n\nMark Wagner reported OOM symptoms when sending UDP traffic over\na macvtap link to a kvm receiver.\n\nThis appears to be caused by the fact that macvtap packet queues\nare unlimited in length. This means that if the receiver can\u0027t\nkeep up with the rate of flow, then we will hit OOM. Of course\nit gets worse if the OOM killer then decides to kill the receiver.\n\nThis patch imposes a cap on the packet queue length, in the same\nway as the tuntap driver, using the device TX queue length.\n\nPlease note that macvtap currently has no way of giving congestion\nnotification, that means the software device TX queue cannot be\nused and packets will always be dropped once the macvtap driver\nqueue fills up.\n\nThis shouldn\u0027t be a great problem for the scenario where macvtap\nis used to feed a kvm receiver, as the traffic is most likely\nexternal in origin so congestion notification can\u0027t be applied\nanyway.\n\nOf course, if anybody decides to complain about guest-to-guest\nUDP packet loss down the track, then we may have to revisit this.\n\nIncidentally, this patch also fixes a real memory leak when\nmacvtap_get_queue fails.\n\nChris Wright noticed that for this patch to work, we need a\nnon-zero TX queue length. This patch includes his work to change\nthe default macvtap TX queue length to 500.\n\nReported-by: Mark Wagner \u003cmwagner@redhat.com\u003e\nSigned-off-by: Herbert Xu \u003cherbert@gondor.apana.org.au\u003e\nAcked-by: Chris Wright \u003cchrisw@sous-sol.org\u003e\nAcked-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "1ebed71ae23b0b3c68d2a03e8e1b421efb7f35b0", "tree": "b54123c1ad16c0f4ff7a450cdbc672f05f2d3be6", "parents": [ "132ff00a0fdea43708639d84ab3b42bb106410d7" ], "author": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Sat Jul 10 19:25:50 2010 -0700" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Sat Jul 10 19:25:50 2010 -0700" }, "message": "macvtap: Use dev_t for macvtap_major.\n\nReported-by: \"Robert P. J. Day\" \u003crpjday@crashcourse.ca\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "55afbd0810922afe456f9e4e3abc84d69d3f8a15", "tree": "73e38287a8d81b1b03fc72d0693a66aa0a18f7a5", "parents": [ "d9d52b5178af586d679c1052fb161ee05ea2e83f" ], "author": { "name": "Michael S. Tsirkin", "email": "mst@redhat.com", "time": "Thu Apr 29 13:50:48 2010 +0300" }, "committer": { "name": "Michael S. Tsirkin", "email": "mst@redhat.com", "time": "Tue May 04 01:35:47 2010 +0300" }, "message": "macvtap: add ioctl to modify vnet header size\n\nThis adds TUNSETVNETHDRSZ/TUNGETVNETHDRSZ support\nto macvtap.\n\nSigned-off-by: Michael S. Tsirkin \u003cmst@redhat.com\u003e\nAcked-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "43815482370c510c569fd18edb57afcb0fa8cab6", "tree": "063efaae3758402b84f056438b704d1de68f7837", "parents": [ "83d7eb2979cd3390c375470225dd2d8f2009bc70" ], "author": { "name": "Eric Dumazet", "email": "eric.dumazet@gmail.com", "time": "Thu Apr 29 11:01:49 2010 +0000" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Sat May 01 15:00:15 2010 -0700" }, "message": "net: sock_def_readable() and friends RCU conversion\n\nsk_callback_lock rwlock actually protects sk-\u003esk_sleep pointer, so we\nneed two atomic operations (and associated dirtying) per incoming\npacket.\n\nRCU conversion is pretty much needed :\n\n1) Add a new structure, called \"struct socket_wq\" to hold all fields\nthat will need rcu_read_lock() protection (currently: a\nwait_queue_head_t and a struct fasync_struct pointer).\n\n[Future patch will add a list anchor for wakeup coalescing]\n\n2) Attach one of such structure to each \"struct socket\" created in\nsock_alloc_inode().\n\n3) Respect RCU grace period when freeing a \"struct socket_wq\"\n\n4) Change sk_sleep pointer in \"struct sock\" by sk_wq, pointer to \"struct\nsocket_wq\"\n\n5) Change sk_sleep() function to use new sk-\u003esk_wq instead of\nsk-\u003esk_sleep\n\n6) Change sk_has_sleeper() to wq_has_sleeper() that must be used inside\na rcu_read_lock() section.\n\n7) Change all sk_has_sleeper() callers to :\n - Use rcu_read_lock() instead of read_lock(\u0026sk-\u003esk_callback_lock)\n - Use wq_has_sleeper() to eventually wakeup tasks.\n - Use rcu_read_unlock() instead of read_unlock(\u0026sk-\u003esk_callback_lock)\n\n8) sock_wake_async() is modified to use rcu protection as well.\n\n9) Exceptions :\n macvtap, drivers/net/tun.c, af_unix use integrated \"struct socket_wq\"\ninstead of dynamically allocated ones. They dont need rcu freeing.\n\nSome cleanups or followups are probably needed, (possible\nsk_callback_lock conversion to a spinlock for example...).\n\nSigned-off-by: Eric Dumazet \u003ceric.dumazet@gmail.com\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "4a4771a58e13b46bfdc999fe481e550f8c6937ff", "tree": "42bb025b051ba79efda403e1b843c2a9a1243946", "parents": [ "be9e969d79e40c59142fa9e931aa6f085581b379" ], "author": { "name": "Eric Dumazet", "email": "eric.dumazet@gmail.com", "time": "Sun Apr 25 22:20:06 2010 +0000" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Mon Apr 26 11:18:45 2010 -0700" }, "message": "net: use sk_sleep()\n\nCommit aa395145 (net: sk_sleep() helper) missed three files in the\nconversion.\n\nSigned-off-by: Eric Dumazet \u003ceric.dumazet@gmail.com\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "aa395145165cb06a0d0885221bbe0ce4a564391d", "tree": "118b0403621f10db8dc3dbf12079f9af5b19e05d", "parents": [ "ab9304717f7624c41927f442e6b6d418b2d8b3e4" ], "author": { "name": "Eric Dumazet", "email": "eric.dumazet@gmail.com", "time": "Tue Apr 20 13:03:51 2010 +0000" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Tue Apr 20 16:37:13 2010 -0700" }, "message": "net: sk_sleep() helper\n\nDefine a new function to return the waitqueue of a \"struct sock\".\n\nstatic inline wait_queue_head_t *sk_sleep(struct sock *sk)\n{\n\treturn sk-\u003esk_sleep;\n}\n\nChange all read occurrences of sk_sleep by a call to this function.\n\nNeeded for a future RCU conversion. sk_sleep wont be a field directly\navailable.\n\nSigned-off-by: Eric Dumazet \u003ceric.dumazet@gmail.com\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "5a0e3ad6af8660be21ca98a971cd00f331318c05", "tree": "5bfb7be11a03176a87296a43ac6647975c00a1d1", "parents": [ "ed391f4ebf8f701d3566423ce8f17e614cde9806" ], "author": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Wed Mar 24 17:04:11 2010 +0900" }, "committer": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Tue Mar 30 22:02:32 2010 +0900" }, "message": "include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h\n\npercpu.h is included by sched.h and module.h and thus ends up being\nincluded when building most .c files. percpu.h includes slab.h which\nin turn includes gfp.h making everything defined by the two files\nuniversally available and complicating inclusion dependencies.\n\npercpu.h -\u003e slab.h dependency is about to be removed. Prepare for\nthis change by updating users of gfp and slab facilities include those\nheaders directly instead of assuming availability. As this conversion\nneeds to touch large number of source files, the following script is\nused as the basis of conversion.\n\n http://userweb.kernel.org/~tj/misc/slabh-sweep.py\n\nThe script does the followings.\n\n* Scan files for gfp and slab usages and update includes such that\n only the necessary includes are there. ie. if only gfp is used,\n gfp.h, if slab is used, slab.h.\n\n* When the script inserts a new include, it looks at the include\n blocks and try to put the new include such that its order conforms\n to its surrounding. It\u0027s put in the include block which contains\n core kernel includes, in the same order that the rest are ordered -\n alphabetical, Christmas tree, rev-Xmas-tree or at the end if there\n doesn\u0027t seem to be any matching order.\n\n* If the script can\u0027t find a place to put a new include (mostly\n because the file doesn\u0027t have fitting include block), it prints out\n an error message indicating which .h file needs to be added to the\n file.\n\nThe conversion was done in the following steps.\n\n1. The initial automatic conversion of all .c files updated slightly\n over 4000 files, deleting around 700 includes and adding ~480 gfp.h\n and ~3000 slab.h inclusions. The script emitted errors for ~400\n files.\n\n2. Each error was manually checked. Some didn\u0027t need the inclusion,\n some needed manual addition while adding it to implementation .h or\n embedding .c file was more appropriate for others. This step added\n inclusions to around 150 files.\n\n3. The script was run again and the output was compared to the edits\n from #2 to make sure no file was left behind.\n\n4. Several build tests were done and a couple of problems were fixed.\n e.g. lib/decompress_*.c used malloc/free() wrappers around slab\n APIs requiring slab.h to be added manually.\n\n5. The script was run on all .h files but without automatically\n editing them as sprinkling gfp.h and slab.h inclusions around .h\n files could easily lead to inclusion dependency hell. Most gfp.h\n inclusion directives were ignored as stuff from gfp.h was usually\n wildly available and often used in preprocessor macros. Each\n slab.h inclusion directive was examined and added manually as\n necessary.\n\n6. percpu.h was updated not to include slab.h.\n\n7. Build test were done on the following configurations and failures\n were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my\n distributed build env didn\u0027t work with gcov compiles) and a few\n more options had to be turned off depending on archs to make things\n build (like ipr on powerpc/64 which failed due to missing writeq).\n\n * x86 and x86_64 UP and SMP allmodconfig and a custom test config.\n * powerpc and powerpc64 SMP allmodconfig\n * sparc and sparc64 SMP allmodconfig\n * ia64 SMP allmodconfig\n * s390 SMP allmodconfig\n * alpha SMP allmodconfig\n * um on x86_64 SMP allmodconfig\n\n8. percpu.h modifications were reverted so that it could be applied as\n a separate patch and serve as bisection point.\n\nGiven the fact that I had only a couple of failures from tests on step\n6, I\u0027m fairly confident about the coverage of this conversion patch.\nIf there is a breakage, it\u0027s likely to be something in one of the arch\nheaders which should be easily discoverable easily on most builds of\nthe specific arch.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nGuess-its-ok-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\n" }, { "commit": "b9fb9ee07e67fce0b7bfd517a48710465706c30a", "tree": "10dc1f67a21f2f065f603adf2fc7f86fd009a758", "parents": [ "501c774cb13c3ef8fb7fc5f08fa19473f7d9a0db" ], "author": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Thu Feb 18 05:48:17 2010 +0000" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Thu Feb 18 14:08:38 2010 -0800" }, "message": "macvtap: add GSO/csum offload support\n\nAdded flags field to macvtap_queue to enable/disable processing of\nvirtio_net_hdr via IFF_VNET_HDR. This flag is checked to prepend virtio_net_hdr\nin the receive path and process/skip virtio_net_hdr in the send path.\n\nOriginal patch by Sridhar, further changes by Arnd.\n\nSigned-off-by: Sridhar Samudrala \u003csri@us.ibm.com\u003e\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "501c774cb13c3ef8fb7fc5f08fa19473f7d9a0db", "tree": "65db25ce76a5c038d69c304d9b6456e4f68e9f47", "parents": [ "02df55d28c6001a3cdb7a997a34a0b01f01d015e" ], "author": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Thu Feb 18 05:46:50 2010 +0000" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Thu Feb 18 14:08:38 2010 -0800" }, "message": "net/macvtap: add vhost support\n\nThis adds support for passing a macvtap file descriptor into\nvhost-net, much like we already do for tun/tap.\n\nMost of the new code is taken from the respective patch\nin the tun driver and may get consolidated in the future.\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nAcked-by: Sridhar Samudrala \u003csri@us.ibm.com\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "02df55d28c6001a3cdb7a997a34a0b01f01d015e", "tree": "ea1bf32f7464294ce90e288bf5440323e9ca6e7f", "parents": [ "37ee3d5b3e979a168536e7e2f15bd1e769cb4122" ], "author": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Thu Feb 18 05:45:36 2010 +0000" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Thu Feb 18 14:08:37 2010 -0800" }, "message": "macvtap: rework object lifetime rules\n\nThis reworks the change done by the previous patch\nin a more complete way.\n\nThe original macvtap code has a number of problems\nresulting from the use of RCU for protecting the\naccess to struct macvtap_queue from open files.\n\nThis includes\n- need for GFP_ATOMIC allocations for skbs\n- potential deadlocks when copy_*_user sleeps\n- inability to work with vhost-net\n\nChanging the lifetime of macvtap_queue to always\ndepend on the open file solves all these. The\nRCU reference simply moves one step down to\nthe reference on the macvlan_dev, which we\nonly need for nonblocking operations.\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nAcked-by: Sridhar Samudrala \u003csri@us.ibm.com\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "564517e804c9c6d4e29c270bfc1517404d27107b", "tree": "f1912327050508a1d2902dbba7cbfcf7d054cd0f", "parents": [ "e9449d85c67127d6f9d01aad8963d567ab02cb96" ], "author": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Thu Feb 11 05:55:39 2010 +0000" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Mon Feb 15 21:49:49 2010 -0800" }, "message": "net/macvtap: fix reference counting\n\nThe RCU usage in the original code was broken because\nthere are cases where we possibly sleep with rcu_read_lock\nheld. As a fix, change the macvtap_file_get_queue to\nget a reference on the socket and the netdev instead of\ntaking the full rcu_read_lock.\n\nAlso, change macvtap_file_get_queue failure case to\nnot require a subsequent macvtap_file_put_queue, as\npointed out by Ed Swierk.\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nCc: Ed Swierk \u003ceswierk@aristanetworks.com\u003e\nCc: Sridhar Samudrala \u003csri@us.ibm.com\u003e\nAcked-by: Sridhar Samudrala \u003csri@us.ibm.com\u003e\nAcked-by: Ed Swierk \u003ceswierk@aristanetworks.com\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" }, { "commit": "20d29d7a916a47bf533b5709437fe735b6b5b79e", "tree": "8dbe4178b90915a18e83f97a3e71cdcd39892da1", "parents": [ "fc0663d6b5e6d8e9b57f872a644c0aafd82361b7" ], "author": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Sat Jan 30 12:24:26 2010 +0000" }, "committer": { "name": "David S. Miller", "email": "davem@davemloft.net", "time": "Wed Feb 03 20:20:33 2010 -0800" }, "message": "net: macvtap driver\n\nIn order to use macvlan with qemu and other tools that require\na tap file descriptor, the macvtap driver adds a small backend\nwith a character device with the same interface as the tun\ndriver, with a minimum set of features.\n\nMacvtap interfaces are created in the same way as macvlan\ninterfaces using ip link, but the netif is just used as a\nhandle for configuration and accounting, while the data\ngoes through the chardev. Each macvtap interface has its\nown character device, simplifying permission management\nsignificantly over the generic tun/tap driver.\n\nCc: Patrick McHardy \u003ckaber@trash.net\u003e\nCc: Stephen Hemminger \u003cshemminger@linux-foundation.org\u003e\nCc: David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: \"Michael S. Tsirkin\" \u003cmst@redhat.com\u003e\nCc: Herbert Xu \u003cherbert@gondor.apana.org.au\u003e\nCc: Or Gerlitz \u003cogerlitz@voltaire.com\u003e\nCc: netdev@vger.kernel.org\nCc: bridge@lists.linux-foundation.org\nCc: linux-kernel@vger.kernel.org\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n" } ] }