- 20 4月, 2011 1 次提交
-
-
由 Michał Mirosław 提交于
Signed-off-by: NMichał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 13 1月, 2011 1 次提交
-
-
由 Joe Perches 提交于
Signed-off-by: NJoe Perches <joe@perches.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 11 1月, 2011 2 次提交
-
-
由 Or Gerlitz 提交于
Signed-off-by: NOr Gerlitz <ogerlitz@voltaire.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Or Gerlitz 提交于
As a first step in moving from LRO to GRO, revert commit af40da89 ("IPoIB: add LRO support"). Also eliminate the ethtool set_flags callback which isn't needed anymore. Finally, we need to include <linux/sched.h> directly to get the declaration of restart_syscall() (which used to be included implicitly through <linux/inet_lro.h>). Cc: Ben Hutchings <bhutchings@solarflare.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Vladimir Sokolovsky <vlad@mellanox.co.il> Signed-off-by: NOr Gerlitz <ogerlitz@voltaire.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 27 10月, 2010 1 次提交
-
-
由 Hagen Paul Pfeifer 提交于
Use the new {max,min}3 macros to save some cycles and bytes on the stack. This patch substitutes trivial nested macros with their counterpart. Signed-off-by: NHagen Paul Pfeifer <hagen@jauu.net> Cc: Joe Perches <joe@perches.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Hartley Sweeten <hsweeten@visionengravers.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Roland Dreier <rolandd@cisco.com> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 24 10月, 2010 1 次提交
-
-
由 Eli Cohen 提交于
Use the net device's dev_id field to encode the port number of the pci device. This can be used to to associate a net device with the pci device's port. The encoding is: dev_id = port - 1. Signed-off-by: NEli Cohen <eli@mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 14 10月, 2010 1 次提交
-
-
由 Eli Cohen 提交于
IPoIB is IP-over-Infiniband link layer. In the case of IBoE, the link layer is Ethernet and IP can work directly over Ethernet, so disable IPoIB for non-IB_LINK_LAYER_INFINIBAND ports. Signed-off-by: NEli Cohen <eli@mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 07 7月, 2010 1 次提交
-
-
由 Or Gerlitz 提交于
Sumeet Lahorani <sumeet.lahorani@oracle.com> reported that the IPoIB child entries are world-writable; however we don't want ordinary users to be able to create and destroy child interfaces, so fix them to be writable only by root. Signed-off-by: NOr Gerlitz <ogerlitz@voltaire.com> Cc: <stable@kernel.org> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 10 12月, 2009 1 次提交
-
-
由 David J. Wilder 提交于
IPoIB can miss a change in destination GID under some conditions. The problem is caused when ipoib_neigh->dgid contains a stale address. The fix is to set ipoib_neigh->dgid to zero in ipoib_neigh_alloc(). This can happen when a system using bonding on its IPoIB interfaces has switched its active interface from interface A to B and back to A. The system that fails over will not correctly processes the 2nd address change, as described below. When an address has changed neighbor->ha is updated with the new address. Each neighbor has an associated ipoib_neigh. ipoib_neigh->dgid also holds a copy of the remote node's hardware address. When an address changes neighbor->ha is updated by the network layer (arp code) with the new address. IPoIB detects this change in ipoib_start_xmit() by comparing neighbor->ha with ipoib_neigh->dgid. The bug is that ipoib_neigh->dgid may already contain the new address (A) thus the change from B to A is missed by ipoib. Here is the sequence of events: ipoib_neigh->dgid = A and neighbor->ha = A The address is switched to B (the first switch) neighbor->ha = B The change is seen in ipoib_start_xmit() -- neighbor->ha != ipoib_neigh->dgid so ipoib_neigh is released, and a new one is allocated. The allocator may return the same chunk of memory that was just released, therefore ipoib_neigh->dgid still contains A at this point. ipoib_neigh->dgid should be updated in neigh_add_path(), but if the following conditions are true dgid is not updated: 1) __path_find() returns a path 2) path->ah is NULL The remote system now switches from address B to A, neighbor->ha is updated to A. Now we have again : ipoib_neigh->dgid = A and neighbor->ha = A Since the addresses are the same ipoib won't process the change in address. Fix this by zeroing out the dgid field when allocating a new struct ipoib_neigh. Signed-off-by: NDavid Wilder <dwilder@us.ibm.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 06 9月, 2009 1 次提交
-
-
由 Roland Dreier 提交于
IPoIB currently must use irqsave locking for priv->lock, since it is taken from interrupt context in one path. However, ipoib_send() does skb_orphan(), and the network stack locking is not IRQ-safe. Therefore we need to make sure we don't hold priv->lock when calling ipoib_send() to avoid lockdep warnings (the code was almost certainly safe in practice, since the only code path that takes priv->lock from interrupt context would never call into the network stack). Addresses: http://bugzilla.kernel.org/show_bug.cgi?id=13757Reported-by: NBart Van Assche <bart.vanassche@gmail.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 03 6月, 2009 1 次提交
-
-
由 Eric Dumazet 提交于
Define three accessors to get/set dst attached to a skb struct dst_entry *skb_dst(const struct sk_buff *skb) void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst) void skb_dst_drop(struct sk_buff *skb) This one should replace occurrences of : dst_release(skb->dst) skb->dst = NULL; Delete skb->dst field Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 31 5月, 2009 1 次提交
-
-
由 Eric Dumazet 提交于
Last two drivers that need skb->dst in their start_xmit() function Tell dev_hard_start_xmit() to no release it by unsetting IFF_XMIT_DST_RELEASE Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 21 4月, 2009 1 次提交
-
-
由 Yossi Etigin 提交于
If NAPI is enabled while IPoIB's CQ is being drained, it creates a race on priv->ibwc between ipoib_poll() and ipoib_drain_cq(), leading to memory corruption. The solution is to enable/disable NAPI in ipoib_ib_dev_{open/stop}() instead of in ipoib_{open/stop}(), and sync NAPI on the INITIALIZED flag instead on the ADMIN_UP flag. This way NAPI will be disabled when ipoib_drain_cq() is called. This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1587>. Signed-off-by: NYossi Etigin <yosefe@voltaire.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 22 3月, 2009 1 次提交
-
-
由 Stephen Hemminger 提交于
Signed-off-by: NStephen Hemminger <shemminger@vyatta.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 18 2月, 2009 1 次提交
-
-
由 Jack Morgenstein 提交于
If path_rec_start() returns error, call path_free() only if the path was newly-created. If we free an existing path whose valid flag was zero, (but do not detach it from the list) we cause corruption of the path list (of which it is a member), and get a kernel crash. The simplest solution is to not free an existing path -- just leave it in the list as-is (i.e., with its valid flag cleared). Thanks to Yossi Etigin of Voltaire for identifying the problem flow which caused the kernel crash. Signed-off-by: NJack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: NMoni Shua <monis@voltaire.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 15 1月, 2009 1 次提交
-
-
由 Roland Dreier 提交于
After commit fe25c561 ("IPoIB: Don't enable NAPI when it's already enabled"), if an interface is brought up but the corresponding P_Key never appears, then ipoib_stop() will hang in napi_disable(), because ipoib_open() returns before it does napi_enable(). Fix this by changing ipoib_open() to call napi_enable() even if the P_Key isn't present. Reported-by: NYossi Etigin <yosefe@Voltaire.COM> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 10 1月, 2009 1 次提交
-
-
由 Yossi Etigin 提交于
Fix bonding failover in the case both peers failover and the gratuitous ARP is lost. In that case, the sender side will create an ipoib_neigh and issue a path request with the old GID first. When skb->dst->neighbour->ha changes due to ARP refresh, this ipoib_neigh will not be added to the path->list of the path of the new GID, because the ipoib_neigh already exists. It will not have an AH either, because of sender-side failover. Therefore, it will not get an AH when the path is resolved. The solution here is to compare GIDs in ipoib_start_xmit() even if neigh->ah is invalid. Comparing with an uninitialized value of neigh->dgid should be fine, since a spurious match is harmless (and astronomically unlikely too). Signed-off-by: NMoni Shoua <monis@voltaire.com> Signed-off-by: NYossi Etigin <yosefe@voltaire.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 13 11月, 2008 3 次提交
-
-
由 Yossi Etigin 提交于
Fix a crash in path_rec_completion() during an SM up/down loop. If more than one path record request is issued, the first completion releases path->done, allowing ipoib_flush_paths() to free the path, and thus corrupting it for the second completion. Commit ee1e2c82 ("IPoIB: Refresh paths instead of flushing them on SM change events") added the field path->valid and changed the test "if (!path)" to "if (!path || !path->valid)". This change made it possible for a path with an outstanding query to pass the test and issue another query on the same path. Having two queries on the same path leads to a crash. This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1325>. Signed-off-by: NYossi Etigin <yosefe@voltaire.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Yossi Etigin 提交于
ipoib_flush_paths() can hang during an SM up/down loop: if path_rec_start() fails (for instance, because there is no sm_ah), the path is still added to the path list by neigh_add_path(). Then, ipoib_flush_paths() will wait for path->done, but it will never complete because the request was not issued at all. Fix this by completing path->done if issuing the query fails. This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1329>. Signed-off-by: NYossi Etigin <yosefe@voltaire.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Yossi Etigin 提交于
If a P_Key is not present when an interface is created, ipoib_open() will return after doing napi_enable(). ipoib_open() will be called again from ipoib_pkey_poll() when the P_Key appears, after NAPI has already been enabled, and try to enable it again. This triggers a BUG_ON() in napi_enable(). Fix this by moving the call to napi_enable() to after the test for P_Key presence. Signed-off-by: NYossi Etigin <yosefe@voltaire.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 30 10月, 2008 1 次提交
-
-
由 Harvey Harrison 提交于
Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 29 10月, 2008 1 次提交
-
-
由 Harvey Harrison 提交于
Replace all uses of IPOIB_GID_FMT, IPOIB_GID_RAW_ARG() and IPOIB_GID_ARG() Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 23 10月, 2008 1 次提交
-
-
由 Or Gerlitz 提交于
Child devices were created without any offload features set, fix this by moving the code that computes the features into generic function which is now called through non-child and child device creation. Signed-off-by: NOr Gerlitz <ogerlitz@voltaire.com> -- v1 has a bug where the 'result' flag in ipoib_vlan_add may be used uninitialized Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 01 10月, 2008 1 次提交
-
-
由 Roland Dreier 提交于
Currently, IPoIB is an LLTX driver that uses its own IRQ-disabling tx_lock. Not only do we want to get rid of LLTX, this actually causes problems because of the skb_orphan() done with this tx_lock held: some skb destructors expect to be run with interrupts enabled. The simplest fix for this is to get rid of the driver-private tx_lock and stop using LLTX. We kill off priv->tx_lock and use netif_tx_lock[_bh]() instead; the patch to do this is a tiny bit tricky because we need to update places that take priv->lock inside the tx_lock to disable IRQs, rather than relying on tx_lock having already disabled IRQs. Also, there are a couple of places where we need to disable BHs to make sure we have a consistent context to call netif_tx_lock() (since we no longer can use _irqsave() variants), and we also have to change ipoib_send_comp_handler() to call drain_tx_cq() through a timer rather than directly, because ipoib_send_comp_handler() runs in interrupt context and drain_tx_cq() must run in BH context so it can call netif_tx_lock(). Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 26 9月, 2008 2 次提交
-
-
由 Roland Dreier 提交于
Commit ee1e2c82 ("IPoIB: Refresh paths instead of flushing them on SM change events") changed how paths are flushed on an SM event. This change introduces a problem if the path record query triggered by fails, causing path->ah to become NULL. A later successful path query will then trigger WARN_ON() in path_rec_completion(), and crash because path->ah has already been freed, so the ipoib_put_ah() inside the lock in path_rec_completion() may actually drop the last reference (contrary to the comment that claims this is safe). Fix this by updating path->ah and freeing old_ah only when the path record query is successful. This prevents the neighbour AH and that path AH from getting out of sync. This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1194> Reported-by: NRabah Salem <ravah@mellanox.com> Debugged-by: NEli Cohen <eli@mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 Roland Dreier 提交于
Commit ee1e2c82 ("IPoIB: Refresh paths instead of flushing them on SM change events") changed how paths are flushed on an SM event. This change introduces a problem if the path record query triggered by fails, causing path->ah to become NULL. A later successful path query will then trigger WARN_ON() in path_rec_completion(), and crash because path->ah has already been freed, so the ipoib_put_ah() inside the lock in path_rec_completion() may actually drop the last reference (contrary to the comment that claims this is safe). Fix this by updating path->ah and freeing old_ah only when the path record query is successful. This prevents the neighbour AH and that path AH from getting out of sync. This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1194> Reported-by: NRabah Salem <ravah@mellanox.com> Debugged-by: NEli Cohen <eli@mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 17 9月, 2008 1 次提交
-
-
由 Yossi Etigin 提交于
Taking rtnl_lock in ipoib_mcast_join_complete() causes a deadlock with ipoib_stop(). We avoid it by scheduling the piece of code that takes the lock on ipoib_workqueue instead of executing it directly. This works because we only flush the ipoib_workqueue with the RTNL not held. The deadlock happens because ipoib_stop() calls ipoib_ib_dev_down() which calls ipoib_mcast_dev_flush(), which calls ipoib_mcast_free(), which calls ipoib_mcast_leave(). The latter calls ib_sa_free_multicast(), and this waits until the multicast completion handler finishes. This handler is ipoib_mcast_join_complete(), which waits for the rtnl_lock(), which was already taken by ipoib_stop(). This bug was introduced in commit a77a57a1 ("IPoIB: Fix deadlock on RTNL in ipoib_stop()"). Signed-off-by: NYossi Etigin <yosefe@voltaire.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 20 8月, 2008 1 次提交
-
-
由 Roland Dreier 提交于
Commit c8c2afe3 ("IPoIB: Use rtnl lock/unlock when changing device flags") added a call to rtnl_lock() in ipoib_mcast_join_task(), which is run from the ipoib_workqueue. However, ipoib_stop() (which is run inside rtnl_lock()) flushes this workqueue, which leads to a deadlock if the join task is pending. Fix this by simply not flushing the workqueue from ipoib_stop(). It turns out that we really don't care about workqueue tasks running during or after ipoib_stop(), as long as we make sure to flush the workqueue before unregistering a netdev. This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1114>. Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 23 7月, 2008 1 次提交
-
-
由 Or Gerlitz 提交于
Print the return code of ib_sa_path_rec_get() if it fails to help debug errors. Signed-off-by: NOr Gerlitz <ogerlitz@voltaire.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 15 7月, 2008 5 次提交
-
-
由 Eli Cohen 提交于
No need for a mutex around calls to ib_attach_mcast/ib_detach_mcast since these operations are synchronized at the HW driver layer. Signed-off-by: NEli Cohen <eli@mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Moni Shoua 提交于
The patch tries to solve the problem of device going down and paths being flushed on an SM change event. The method is to mark the paths as candidates for refresh (by setting the new valid flag to 0), and wait for an ARP probe a new path record query. The solution requires a different and less intrusive handling of SM change event. For that, the second argument of the flush function changes its meaning from a boolean flag to a level. In most cases, SM failover doesn't cause LID change so traffic won't stop. In the rare cases of LID change, the remote host (the one that hadn't changed its LID) will lose connectivity until paths are refreshed. This is no worse than the current state. In fact, preventing the device from going down saves packets that otherwise would be lost. Signed-off-by: NMoni Levy <monil@voltaire.com> Signed-off-by: NMoni Shoua <monis@voltaire.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Vladimir Sokolovsky 提交于
Add "ipoib_use_lro" module parameter to enable LRO and an "ipoib_lro_max_aggr" module parameter to set the max number of packets to be aggregated. Make LRO controllable and LRO statistics accessible through ethtool. Signed-off-by: NVladimir Sokolovsky <vlad@mellanox.co.il> Signed-off-by: NEli Cohen <eli@mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Eli Cohen 提交于
The connected mode implementation in the IPoIB driver has a large overhead in the way SKBs are handled in the receive flow. It usually allocates an SKB with as big as was used in the currently received SKB and moves unused fragments from the old SKB to the new one. This involves a loop on all the remaining fragments and incurs overhead on the CPU. This patch, for small SKBs, allocates an SKB just large enough to contain the received data and copies to it the data from the received SKB. The newly allocated SKB is passed to the stack and the old SKB is reposted. When running netperf, UDP small messages, without this pach I get: UDP UNIDIRECTIONAL SEND TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 14.4.3.178 (14.4.3.178) port 0 AF_INET Socket Message Elapsed Messages Size Size Time Okay Errors Throughput bytes bytes secs # # 10^6bits/sec 114688 128 10.00 5142034 0 526.31 114688 10.00 1130489 115.71 With this patch I get both send and receive at ~315 mbps. The reason that send performance actually slows down is as follows: When using this patch, the overhead of the CPU for handling RX packets is dramatically reduced. As a result, we do not experience RNR NAK messages from the receiver which cause the connection to be closed and reopened again; when the patch is not used, the receiver cannot handle the packets fast enough so there is less time to post new buffers and hence the mentioned RNR NACKs. So what happens is that the application *thinks* it posted a certain number of packets for transmission but these packets are flushed and do not really get transmitted. Since the connection gets opened and closed many times, each time netperf gets the CPU time that otherwise would have been given to IPoIB to actually transmit the packets. This can be verified when looking at the port counters -- the output of ifconfig and the oputput of netperf (this is for the case without the patch): tx packets ========== port counter: 1,543,996 ifconfig: 1,581,426 netperf: 5,142,034 rx packets ========== netperf 1,1304,089 Signed-off-by: NEli Cohen <eli@mellanox.co.il>
-
由 Roland Dreier 提交于
They don't get updated by git and so they're worse than useless. Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 30 4月, 2008 1 次提交
-
-
由 Eli Cohen 提交于
Use a dedicated CQ for UD send completions. Also, do not arm the UD send CQ, which reduces the number of interrupts generated. This patch farther reduces overhead by not calling poll CQ for every posted send WR -- it does polls only when there 16 or more outstanding work requests. Signed-off-by: NEli Cohen <eli@mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 24 4月, 2008 1 次提交
-
-
由 Shirley Ma 提交于
This patch enables IPoIB to use 4K UD messages (when the underlying device and fabrics support a 4K MTU) by using two scatter buffers when PAGE_SIZE is less than or equal to thhe HCA IB MTU size. The first buffer is for IPoIB header + GRH header, and the second buffer is the IPoIB payload, which is 4K-4. Signed-off-by: NShirley Ma <xma@us.ibm.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 17 4月, 2008 4 次提交
-
-
由 Eli Cohen 提交于
Just add the infrastructure so we can add functionality later. Signed-off-by: NEli Cohen <eli@mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Eli Cohen 提交于
For HCAs that support TCP segmentation offload (IB_DEVICE_UD_TSO), set NETIF_F_TSO and use HW LSO to offload TCP segmentation. Signed-off-by: NEli Cohen <eli@mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Robert P. J. Day 提交于
Convert list_splice() + INIT_LIST_HEAD() to the equivalent list_splice_init() Signed-off-by: NRobert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Eli Cohen 提交于
For HCAs that support checksum offload (ie that set IB_DEVICE_UD_IP_CSUM in the device capabilities flags), have IPoIB set NETIF_F_IP_CSUM and use the HCA to generate and verify IP checksums. Signed-off-by: NEli Cohen <eli@mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-