- 12 6月, 2014 1 次提交
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由 Toshiaki Makita 提交于
Bridge device doesn't need to embed S-tag into skb->data. Signed-off-by: NToshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 17 5月, 2014 1 次提交
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由 Vlad Yasevich 提交于
There exist configurations where the administrator or another management entity has the foreknowledge of all the mac addresses of end systems that are being bridged together. In these environments, the administrator can statically configure known addresses in the bridge FDB and disable flooding and learning on ports. This makes it possible to turn off promiscuous mode on the interfaces connected to the bridge. Here is why disabling flooding and learning allows us to control promiscuity: Consider port X. All traffic coming into this port from outside the bridge (ingress) will be either forwarded through other ports of the bridge (egress) or dropped. Forwarding (egress) is defined by FDB entries and by flooding in the event that no FDB entry exists. In the event that flooding is disabled, only FDB entries define the egress. Once learning is disabled, only static FDB entries provided by a management entity define the egress. If we provide information from these static FDBs to the ingress port X, then we'll be able to accept all traffic that can be successfully forwarded and drop all the other traffic sooner without spending CPU cycles to process it. Another way to define the above is as following equations: ingress = egress + drop expanding egress ingress = static FDB + learned FDB + flooding + drop disabling flooding and learning we a left with ingress = static FDB + drop By adding addresses from the static FDB entries to the MAC address filter of an ingress port X, we fully define what the bridge can process without dropping and can thus turn off promiscuous mode, thus dropping packets sooner. There have been suggestions that we may want to allow learning and update the filters with learned addresses as well. This would require mac-level authentication similar to 802.1x to prevent attacks against the hw filters as they are limited resource. Additionally, if the user places the bridge device in promiscuous mode, all ports are placed in promiscuous mode regardless of the changes to flooding and learning. Since the above functionality depends on full static configuration, we have also require that vlan filtering be enabled to take advantage of this. The reason is that the bridge has to be able to receive and process VLAN-tagged frames and the there are only 2 ways to accomplish this right now: promiscuous mode or vlan filtering. Suggested-by: NMichael S. Tsirkin <mst@redhat.com> Acked-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NVlad Yasevich <vyasevic@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 14 5月, 2014 1 次提交
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由 Wilfried Klaebe 提交于
net: get rid of SET_ETHTOOL_OPS Dave Miller mentioned he'd like to see SET_ETHTOOL_OPS gone. This does that. Mostly done via coccinelle script: @@ struct ethtool_ops *ops; struct net_device *dev; @@ - SET_ETHTOOL_OPS(dev, ops); + dev->ethtool_ops = ops; Compile tested only, but I'd seriously wonder if this broke anything. Suggested-by: NDave Miller <davem@davemloft.net> Signed-off-by: NWilfried Klaebe <w-lkml@lebenslange-mailadresse.de> Acked-by: NFelipe Balbi <balbi@ti.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 30 3月, 2014 1 次提交
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由 Eric W. Biederman 提交于
The gfp parameter was added in: commit 47be03a2 Author: Amerigo Wang <amwang@redhat.com> Date: Fri Aug 10 01:24:37 2012 +0000 netpoll: use GFP_ATOMIC in slave_enable_netpoll() and __netpoll_setup() slave_enable_netpoll() and __netpoll_setup() may be called with read_lock() held, so should use GFP_ATOMIC to allocate memory. Eric suggested to pass gfp flags to __netpoll_setup(). Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Reported-by: NDan Carpenter <dan.carpenter@oracle.com> Signed-off-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NCong Wang <amwang@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net> The reason for the gfp parameter was removed in: commit c4cdef9b Author: dingtianhong <dingtianhong@huawei.com> Date: Tue Jul 23 15:25:27 2013 +0800 bonding: don't call slave_xxx_netpoll under spinlocks The slave_xxx_netpoll will call synchronize_rcu_bh(), so the function may schedule and sleep, it should't be called under spinlocks. bond_netpoll_setup() and bond_netpoll_cleanup() are always protected by rtnl lock, it is no need to take the read lock, as the slave list couldn't be changed outside rtnl lock. Signed-off-by: NDing Tianhong <dingtianhong@huawei.com> Cc: Jay Vosburgh <fubar@us.ibm.com> Cc: Andy Gospodarek <andy@greyhouse.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net> Nothing else that calls __netpoll_setup or ndo_netpoll_setup requires a gfp paramter, so remove the gfp parameter from both of these functions making the code clearer. Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 29 3月, 2014 1 次提交
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由 Toshiaki Makita 提交于
Bridge vlan code (br_vlan_get_tag()) assumes that all frames have vlan_tci if they are tagged, but if vlan tx offload is manually disabled on bridge device and frames are sent from vlan device on the bridge device, the tags are embedded in skb->data and they break this assumption. Extract embedded vlan tags and move them to vlan_tci at ingress. Signed-off-by: NToshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Acked-by: NVlad Yasevich <vyasevic@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 15 3月, 2014 1 次提交
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由 Eric W. Biederman 提交于
Replace the bh safe variant with the hard irq safe variant. We need a hard irq safe variant to deal with netpoll transmitting packets from hard irq context, and we need it in most if not all of the places using the bh safe variant. Except on 32bit uni-processor the code is exactly the same so don't bother with a bh variant, just have a hard irq safe variant that everyone can use. Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 25 2月, 2014 1 次提交
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由 Joe Perches 提交于
Convert the more obvious uses of memcpy to ether_addr_copy. There are still uses of memcpy that could be converted but these addresses are __aligned(2). Convert a couple uses of 6 in gr_private.h to ETH_ALEN. Signed-off-by: NJoe Perches <joe@perches.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 15 2月, 2014 1 次提交
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由 WANG Cong 提交于
There are many drivers calling alloc_percpu() to allocate pcpu stats and then initializing ->syncp. So just introduce a helper function for them. Cc: David S. Miller <davem@davemloft.net> Signed-off-by: NCong Wang <xiyou.wangcong@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 11 2月, 2014 2 次提交
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由 Toshiaki Makita 提交于
Vlan code may need fdb change when changing mac address of bridge device even if it is caused by the mac address changing of a bridge port. Example configuration: ip link set eth0 address 12:34:56:78:90:ab ip link set eth1 address aa:bb:cc:dd:ee:ff brctl addif br0 eth0 brctl addif br0 eth1 # br0 will have mac address 12:34:56:78:90:ab bridge vlan add dev br0 vid 10 self bridge vlan add dev eth0 vid 10 We will have fdb entry such that f->dst == NULL, f->vlan_id == 10 and f->addr == 12:34:56:78:90:ab at this time. Next, change the mac address of eth0 to greater value. ip link set eth0 address ee:ff:12:34:56:78 Then, mac address of br0 will be recalculated and set to aa:bb:cc:dd:ee:ff. However, an entry aa:bb:cc:dd:ee:ff will not be created and we will be not able to communicate using br0 on vlan 10. Address this issue by deleting and adding local entries whenever changing the mac address of the bridge device. If there already exists an entry that has the same address, for example, in case that br_fdb_changeaddr() has already inserted it, br_fdb_change_mac_address() will simply fail to insert it and no duplicated entry will be made, as it was. This approach also needs br_add_if() to call br_fdb_insert() before br_stp_recalculate_bridge_id() so that we don't create an entry whose dst == NULL in this function to preserve previous behavior. Note that this is a slight change in behavior where the bridge device can receive the traffic to the new address before calling br_stp_recalculate_bridge_id() in br_add_if(). However, it is not a problem because we have already the address on the new port and such a way to insert new one before recalculating bridge id is taken in br_device_event() as well. Signed-off-by: NToshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Acked-by: NVlad Yasevich <vyasevic@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Toshiaki Makita 提交于
We have been always failed to delete the old entry at br_fdb_change_mac_address() because br_set_mac_address() updates dev->dev_addr before calling br_fdb_change_mac_address() and br_fdb_change_mac_address() uses dev->dev_addr to find the old entry. That update of dev_addr is completely unnecessary because the same work is done in br_stp_change_bridge_id() which is called right away after calling br_fdb_change_mac_address(). Signed-off-by: NToshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Acked-by: NVlad Yasevich <vyasevic@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 07 2月, 2014 1 次提交
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由 Cong Wang 提交于
Commit 93d8bf9f ("bridge: cleanup netpoll code") introduced a check in br_netpoll_enable(), but this check is incorrect for br_netpoll_setup(). This patch moves the code after the check into __br_netpoll_enable() and calls it in br_netpoll_setup(). For br_add_if(), the check is still needed. Fixes: 93d8bf9f ("bridge: cleanup netpoll code") Cc: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: NCong Wang <cwang@twopensource.com> Signed-off-by: NCong Wang <xiyou.wangcong@gmail.com> Acked-by: NToshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Tested-by: NToshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 05 1月, 2014 1 次提交
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由 Li RongQing 提交于
They are same, so unify them as one, pcpu_sw_netstats. Define pcpu_sw_netstat in netdevice.h, remove pcpu_tstats from if_tunnel and remove br_cpu_netstats from br_private.h Cc: Cong Wang <xiyou.wangcong@gmail.com> Cc: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: NLi RongQing <roy.qing.li@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 06 11月, 2013 1 次提交
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由 John Stultz 提交于
In order to enable lockdep on seqcount/seqlock structures, we must explicitly initialize any locks. The u64_stats_sync structure, uses a seqcount, and thus we need to introduce a u64_stats_init() function and use it to initialize the structure. This unfortunately adds a lot of fairly trivial initialization code to a number of drivers. But the benefit of ensuring correctness makes this worth while. Because these changes are required for lockdep to be enabled, and the changes are quite trivial, I've not yet split this patch out into 30-some separate patches, as I figured it would be better to get the various maintainers thoughts on how to best merge this change along with the seqcount lockdep enablement. Feedback would be appreciated! Signed-off-by: NJohn Stultz <john.stultz@linaro.org> Acked-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NPeter Zijlstra <peterz@infradead.org> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: James Morris <jmorris@namei.org> Cc: Jesse Gross <jesse@nicira.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Mirko Lindner <mlindner@marvell.com> Cc: Patrick McHardy <kaber@trash.net> Cc: Roger Luethi <rl@hellgate.ch> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Simon Horman <horms@verge.net.au> Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Wensong Zhang <wensong@linux-vs.org> Cc: netdev@vger.kernel.org Link: http://lkml.kernel.org/r/1381186321-4906-2-git-send-email-john.stultz@linaro.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
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- 30 10月, 2013 1 次提交
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由 Vlad Yasevich 提交于
Currently multicast code attempts to extrace the vlan id from the skb even when vlan filtering is disabled. This can lead to mdb entries being created with the wrong vlan id. Pass the already extracted vlan id to the multicast filtering code to make the correct id is used in creation as well as lookup. Signed-off-by: NVlad Yasevich <vyasevic@redhat.com> Acked-by: NToshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 31 8月, 2013 1 次提交
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由 Linus Lüssing 提交于
Currently we would still potentially suffer multicast packet loss if there is just either an IGMP or an MLD querier: For the former case, we would possibly drop IPv6 multicast packets, for the latter IPv4 ones. This is because we are currently assuming that if either an IGMP or MLD querier is present that the other one is present, too. This patch makes the behaviour and fix added in "bridge: disable snooping if there is no querier" (b00589af) to also work if there is either just an IGMP or an MLD querier on the link: It refines the deactivation of the snooping to be protocol specific by using separate timers for the snooped IGMP and MLD queries as well as separate timers for our internal IGMP and MLD queriers. Signed-off-by: NLinus Lüssing <linus.luessing@web.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 01 8月, 2013 1 次提交
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由 Linus Lüssing 提交于
If there is no querier on a link then we won't get periodic reports and therefore won't be able to learn about multicast listeners behind ports, potentially leading to lost multicast packets, especially for multicast listeners that joined before the creation of the bridge. These lost multicast packets can appear since c5c23260 ("bridge: Add multicast_querier toggle and disable queries by default") in particular. With this patch we are flooding multicast packets if our querier is disabled and if we didn't detect any other querier. A grace period of the Maximum Response Delay of the querier is added to give multicast responses enough time to arrive and to be learned from before disabling the flooding behaviour again. Signed-off-by: NLinus Lüssing <linus.luessing@web.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 27 7月, 2013 1 次提交
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由 stephen hemminger 提交于
This started out with fixing a sparse warning, then I realized that the wrapper function br_netpoll_info could just be collapsed away by rolling it into the enable code. Also, eliminate unnecessary goto's Signed-off-by: NStephen Hemminger <stephen@networkplumber.org> Reviewed-by: NJiri Pirko <jiri@resnulli.us> Acked-by: NNeil Horman <nhorman@tuxdriver.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 11 6月, 2013 1 次提交
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由 Vlad Yasevich 提交于
Add a flag to control flood of unicast traffic. By default, flood is on and the bridge will flood unicast traffic if it doesn't know the destination. When the flag is turned off, unicast traffic without an FDB will not be forwarded to the specified port. Signed-off-by: NVlad Yasevich <vyasevic@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 24 5月, 2013 1 次提交
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由 Vlad Yasevich 提交于
When vlan device is configured on top of the brige, it does not support any offload capabilities because the bridge device does not initiliaze vlan_fatures. Set vlan_fatures to be equivalent to hw_fatures. Signed-off-by: NVlad Yasevich <vyasevic@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 20 4月, 2013 1 次提交
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由 Patrick McHardy 提交于
Rename the hardware VLAN acceleration features to include "CTAG" to indicate that they only support CTAGs. Follow up patches will introduce 802.1ad server provider tagging (STAGs) and require the distinction for hardware not supporting acclerating both. Signed-off-by: NPatrick McHardy <kaber@trash.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 08 3月, 2013 1 次提交
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由 Cong Wang 提交于
Obviously, vid should be considered when searching for multicast group. Cc: Vlad Yasevich <vyasevic@redhat.com> Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: NCong Wang <amwang@redhat.com> Acked-by: NVlad Yasevich <vyasevich@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 14 2月, 2013 4 次提交
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由 Vlad Yasevich 提交于
This patch adds vlan to unicast fdb entries that are created for learned addresses (not the manually configured ones). It adds vlan id into the hash mix and uses vlan as an addditional parameter for an entry match. Signed-off-by: NVlad Yasevich <vyasevic@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Vlad Yasevich 提交于
At ingress, any untagged traffic is assigned to the PVID. Any tagged traffic is filtered according to membership bitmap. At egress, if the vlan matches the PVID, the frame is sent untagged. Otherwise the frame is sent tagged. Signed-off-by: NVlad Yasevich <vyasevic@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Vlad Yasevich 提交于
Add a netlink interface to add and remove vlan configuration on bridge port. The interface uses the RTM_SETLINK message and encodes the vlan configuration inside the IFLA_AF_SPEC. It is possble to include multiple vlans to either add or remove in a single message. Signed-off-by: NVlad Yasevich <vyasevic@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Vlad Yasevich 提交于
When a frame arrives on a port or transmitted by the bridge, if we have VLANs configured, validate that a given VLAN is allowed to enter the bridge. Signed-off-by: NVlad Yasevich <vyasevic@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 12 2月, 2013 2 次提交
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由 Neil Horman 提交于
__netpoll_rcu_free is used to free netpoll structures when the rtnl_lock is already held. The mechanism is used to asynchronously call __netpoll_cleanup outside of the holding of the rtnl_lock, so as to avoid deadlock. Unfortunately, __netpoll_cleanup modifies pointers (dev->np), which means the rtnl_lock must be held while calling it. Further, it cannot be held, because rcu callbacks may be issued in softirq contexts, which cannot sleep. Fix this by converting the rcu callback to a work queue that is guaranteed to get scheduled in process context, so that we can hold the rtnl properly while calling __netpoll_cleanup Tested successfully by myself. Signed-off-by: NNeil Horman <nhorman@tuxdriver.com> CC: "David S. Miller" <davem@davemloft.net> CC: Cong Wang <amwang@redhat.com> CC: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Jiri Pirko 提交于
And remove no longer used br->flags. Signed-off-by: NJiri Pirko <jiri@resnulli.us> Acked-by: NStephen Hemminger <stephen@networkplumber.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 07 1月, 2013 1 次提交
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由 Jiri Pirko 提交于
Use strlcpy where possible to ensure the string is \0 terminated. Use always sizeof(string) instead of 32, ETHTOOL_BUSINFO_LEN and custom defines. Use snprintf instead of sprint. Remove unnecessary inits of ->fw_version Remove unnecessary inits of drvinfo struct. Signed-off-by: NJiri Pirko <jiri@resnulli.us> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 04 1月, 2013 1 次提交
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由 Jiri Pirko 提交于
NET_ADDR_SET is set in dev_set_mac_address() no need to alter dev->addr_assign_type value in drivers. Signed-off-by: NJiri Pirko <jiri@resnulli.us> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 03 11月, 2012 1 次提交
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由 Ben Hutchings 提交于
Since this array is no longer part of the bridge driver, it should have an 'eth' prefix not 'br'. We also assume that either it's 16-bit-aligned or the architecture has efficient unaligned access. Ensure the first of these is true by explicitly aligning it. Signed-off-by: NBen Hutchings <bhutchings@solarflare.com> Acked-by: NJohn Fastabend <john.r.fastabend@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 01 11月, 2012 1 次提交
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由 John Fastabend 提交于
The PF_BRIDGE:RTM_{GET|SET}LINK nlmsg family and type are currently embedded in the ./net/bridge module. This prohibits them from being used by other bridging devices. One example of this being hardware that has embedded bridging components. In order to use these nlmsg types more generically this patch adds two net_device_ops hooks. One to set link bridge attributes and another to dump the current bride attributes. ndo_bridge_setlink() ndo_bridge_getlink() CC: Lennert Buytenhek <buytenh@wantstofly.org> CC: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: NJohn Fastabend <john.r.fastabend@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 30 10月, 2012 1 次提交
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由 John Fastabend 提交于
In SR-IOV mode the PF driver acts as the uplink port and is used to send control packets e.g. lldpad, stp, etc. eth0.1 eth0.2 eth0 VF VF PF | | | <-- stand-in for uplink | | | -------------------------- | Embedded Switch | -------------------------- | MAC <-- uplink But the embedded switch is setup to forward multicast addresses to all interfaces both VFs and PF and onto the physical link. This results in reserved MAC addresses used by control protocols to be forwarded over the switch onto the VF. In the LLDP case the PF sends an LLDPDU and it is currently being forwarded to all the VFs who then see the PF as a peer. This is incorrect. This patch adds the multicast addresses to the RAR table in the hardware to prevent this behavior. Signed-off-by: NJohn Fastabend <john.r.fastabend@intel.com> Tested-by: NPhil Schmitt <phillip.j.schmitt@intel.com> Tested-by: NSibai Li <sibai.li@intel.com> Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
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- 16 8月, 2012 1 次提交
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由 Stephen Hemminger 提交于
Alternative solution for problem found by Linux Driver Verification project (linuxtesting.org). As it noted in the comment before the br_handle_frame_finish function, this function should be called under rcu_read_lock. The problem callgraph: br_dev_xmit -> br_nf_pre_routing_finish_bridge_slow -> -> br_handle_frame_finish -> br_port_get_rcu -> rcu_dereference And in this case there is no read-lock section. Reported-by: NDenis Efremov <yefremov.denis@gmail.com> Signed-off-by: NStephen Hemminger <shemminger@vyatta.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 15 8月, 2012 3 次提交
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由 Amerigo Wang 提交于
We don't delete 'p' from the list in the loop, so we can just use list_for_each_entry(). Cc: David Miller <davem@davemloft.net> Cc: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: NCong Wang <amwang@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Amerigo Wang 提交于
Like the previous patch, slave_disable_netpoll() and __netpoll_cleanup() may be called with read_lock() held too, so we should make them non-block, by moving the cleanup and kfree() to call_rcu_bh() callbacks. Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: NCong Wang <amwang@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Amerigo Wang 提交于
slave_enable_netpoll() and __netpoll_setup() may be called with read_lock() held, so should use GFP_ATOMIC to allocate memory. Eric suggested to pass gfp flags to __netpoll_setup(). Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Reported-by: NDan Carpenter <dan.carpenter@oracle.com> Signed-off-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NCong Wang <amwang@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 23 7月, 2012 1 次提交
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由 Kevin Groeneveld 提交于
Fix race condition in several network drivers when reading stats on 32bit UP architectures. These drivers update their stats in a BH context and therefore should use u64_stats_fetch_begin_bh/u64_stats_fetch_retry_bh instead of u64_stats_fetch_begin/u64_stats_fetch_retry when reading the stats. Signed-off-by: NKevin Groeneveld <kgroeneveld@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 18 7月, 2012 1 次提交
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由 Jiri Pirko 提交于
Signed-off-by: NJiri Pirko <jiri@resnulli.us> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 10 5月, 2012 1 次提交
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由 Joe Perches 提交于
Use the new bool function ether_addr_equal to add some clarity and reduce the likelihood for misuse of compare_ether_addr for sorting. Done via cocci script: $ cat compare_ether_addr.cocci @@ expression a,b; @@ - !compare_ether_addr(a, b) + ether_addr_equal(a, b) @@ expression a,b; @@ - compare_ether_addr(a, b) + !ether_addr_equal(a, b) @@ expression a,b; @@ - !ether_addr_equal(a, b) == 0 + ether_addr_equal(a, b) @@ expression a,b; @@ - !ether_addr_equal(a, b) != 0 + !ether_addr_equal(a, b) @@ expression a,b; @@ - ether_addr_equal(a, b) == 0 + !ether_addr_equal(a, b) @@ expression a,b; @@ - ether_addr_equal(a, b) != 0 + ether_addr_equal(a, b) @@ expression a,b; @@ - !!ether_addr_equal(a, b) + ether_addr_equal(a, b) Signed-off-by: NJoe Perches <joe@perches.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 16 4月, 2012 1 次提交
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由 John Fastabend 提交于
This adds two new flags NTF_MASTER and NTF_SELF that can now be used to specify where PF_BRIDGE netlink commands should be sent. NTF_MASTER sends the commands to the 'dev->master' device for parsing. Typically this will be the linux net/bridge, or open-vswitch devices. Also without any flags set the command will be handled by the master device as well so that current user space tools continue to work as expected. The NTF_SELF flag will push the PF_BRIDGE commands to the device. In the basic example below the commands are then parsed and programmed in the embedded bridge. Note if both NTF_SELF and NTF_MASTER bits are set then the command will be sent to both 'dev->master' and 'dev' this allows user space to easily keep the embedded bridge and software bridge in sync. There is a slight complication in the case with both flags set when an error occurs. To resolve this the rtnl handler clears the NTF_ flag in the netlink ack to indicate which sets completed successfully. The add/del handlers will abort as soon as any error occurs. To support this new net device ops were added to call into the device and the existing bridging code was refactored to use these. There should be no required changes in user space to support the current bridge behavior. A basic setup with a SR-IOV enabled NIC looks like this, veth0 veth2 | | ------------ | bridge0 | <---- software bridging ------------ / / ethx.y ethx VF PF \ \ <---- propagate FDB entries to HW \ \ -------------------- | Embedded Bridge | <---- hardware offloaded switching -------------------- In this case the embedded bridge must be managed to allow 'veth0' to communicate with 'ethx.y' correctly. At present drivers managing the embedded bridge either send frames onto the network which then get dropped by the switch OR the embedded bridge will flood these frames. With this patch we have a mechanism to manage the embedded bridge correctly from user space. This example is specific to SR-IOV but replacing the VF with another PF or dropping this into the DSA framework generates similar management issues. Examples session using the 'br'[1] tool to add, dump and then delete a mac address with a new "embedded" option and enabled ixgbe driver: # br fdb add 22:35:19:ac:60:59 dev eth3 # br fdb port mac addr flags veth0 22:35:19:ac:60:58 static veth0 9a:5f:81:f7:f6:ec local eth3 00:1b:21:55:23:59 local eth3 22:35:19:ac:60:59 static veth0 22:35:19:ac:60:57 static #br fdb add 22:35:19:ac:60:59 embedded dev eth3 #br fdb port mac addr flags veth0 22:35:19:ac:60:58 static veth0 9a:5f:81:f7:f6:ec local eth3 00:1b:21:55:23:59 local eth3 22:35:19:ac:60:59 static veth0 22:35:19:ac:60:57 static eth3 22:35:19:ac:60:59 local embedded #br fdb del 22:35:19:ac:60:59 embedded dev eth3 I added a couple lines to 'br' to set the flags correctly is all. It is my opinion that the merit of this patch is now embedded and SW bridges can both be modeled correctly in user space using very nearly the same message passing. [1] 'br' tool was published as an RFC here and will be renamed 'bridge' http://patchwork.ozlabs.org/patch/117664/ Thanks to Jamal Hadi Salim, Stephen Hemminger and Ben Hutchings for valuable feedback, suggestions, and review. v2: fixed api descriptions and error case with both NTF_SELF and NTF_MASTER set plus updated patch description. Signed-off-by: NJohn Fastabend <john.r.fastabend@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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