- 28 Mar, 2014 14 commits
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Florian Fainelli authored
Update the MDIO bus documentation to mention that the MDIO bus reset function is completely optional. It became optional with commit e1393456 ("[PATCH] PHY Layer fixup") Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Florian Fainelli authored
bfin_mdiobus_reset() does nothing useful and is optional for the MDIO bus code, so let's just remove it. Signed-off-by:
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Florian Fainelli authored
r6040_mdiobus_reset() does nothing useful and is optional for the MDIO bus code, so let's just remove it. Signed-off-by:
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Florian Fainelli authored
ftgmac100_mdiobus_reset() does nothing useful and is optional for the MDIO bus code, so let's just remove it. Signed-off-by:
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Florian Fainelli authored
sun4i_mdio_reset() does nothing useful and is optional for the MDIO bus code, so let's just remove it. Signed-off-by:
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Florian Fainelli authored
xemaclite_mdio_reset() does nothing useful and is optional for the MDIO bus code, so let's just remove it. Signed-off-by:
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Florian Fainelli authored
orion_mdio_reset() does nothing useful and is optional for the MDIO bus code, so let's just remove it. Signed-off-by:
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Florian Fainelli authored
fs_enet_fec_mii_reset() does nothing useful and is optional for the MDIO bus code, so let's just remove it. Signed-off-by:
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Florian Fainelli authored
fec_enet_mdio_reset() does nothing useful and is optional for the MDIO bus code, so let's just remove it. Signed-off-by:
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Florian Fainelli authored
ethoc_mdio_reset() does nothing useful and is optional for the MDIO bus code, so let's just remove it. Signed-off-by:
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Florian Fainelli authored
dnet_mdio_reset() does nothing useful and is optional for the MDIO bus code, so let's just remove it. Signed-off-by:
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Florian Fainelli authored
macb_mdio_reset() does nothing useful and is optional for the MDIO bus code, so let's just remove it. Signed-off-by:
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Florian Fainelli authored
tg3_mdio_reset() does nothing useful and is optional for the MDIO bus code, so let's just remove it. Signed-off-by:
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Florian Fainelli authored
greth_mdio_reset() does nothing useful and this function is optional for the MDIO bus code, so let's just remove it. Signed-off-by:
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- 27 Mar, 2014 26 commits
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Florian Fainelli authored
When the UniMAC block is configured to forward the CRC as part of the Ethernet frame (priv->crc_fwd_en, set by default), enabling the hardware RX checksum block unveiled that the dma_rxchk_bit was never set in the per-packet status bits (dma_flag in bcmgenet_desc_rx). This would make the chksum_ok variable to be never set to 1, and the networking stack would have to compute the packet checksums, which takes a substantial amount of time. In order for the RXCHK block to properly compute the packet checksum in hardware, we also need to set the RBUF_SKIP_FCS bit accordingly. Signed-off-by:
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Julia Lawall authored
Use del_timer_sync to ensure that the timer is stopped on all CPUs before the driver exists. This change was suggested by Thomas Gleixner The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r@ declarer name module_exit; identifier ex; @@ module_exit(ex); @@ identifier r.ex; @@ ex(...) { <... - del_timer + del_timer_sync (...) ...> } // </smpl> Signed-off-by:
Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by:
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Julia Lawall authored
Use del_timer_sync to ensure that the timer is stopped on all CPUs before the driver exists. This change was suggested by Thomas Gleixner. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r@ declarer name module_exit; identifier ex; @@ module_exit(ex); @@ identifier r.ex; @@ ex(...) { <... - del_timer + del_timer_sync (...) ...> } // </smpl> Signed-off-by:
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Julia Lawall authored
Use del_timer_sync to ensure that the timer is stopped on all CPUs before the driver exists. This change was suggested by Thomas Gleixner. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r@ declarer name module_exit; identifier ex; @@ module_exit(ex); @@ identifier r.ex; @@ ex(...) { <... - del_timer + del_timer_sync (...) ...> } // </smpl> Signed-off-by:
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Julia Lawall authored
Use del_timer_sync to ensure that the timer is stopped on all CPUs before the driver exists. This change was suggested by Thomas Gleixner. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r@ declarer name module_exit; identifier ex; @@ module_exit(ex); @@ identifier r.ex; @@ ex(...) { <... - del_timer + del_timer_sync (...) ...> } // </smpl> Signed-off-by:
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Eric Dumazet authored
There is no need to allocate 15 bytes in excess for a SYNACK packet, as it contains no data, only headers. SYNACK are always generated in softirq context, and contain a single segment, we can use TCP_INC_STATS_BH() Signed-off-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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Michal Kubeček authored
If an IPv6 host route with metrics exists, an attempt to add a new route for the same target with different metrics fails but rewrites the metrics anyway: 12sp0:~ # ip route add fec0::1 dev eth0 rto_min 1000 12sp0:~ # ip -6 route show fe80::/64 dev eth0 proto kernel metric 256 fec0::1 dev eth0 metric 1024 rto_min lock 1s 12sp0:~ # ip route add fec0::1 dev eth0 rto_min 1500 RTNETLINK answers: File exists 12sp0:~ # ip -6 route show fe80::/64 dev eth0 proto kernel metric 256 fec0::1 dev eth0 metric 1024 rto_min lock 1.5s This is caused by all IPv6 host routes using the metrics in their inetpeer (or the shared default). This also holds for the new route created in ip6_route_add() which shares the metrics with the already existing route and thus ip6_route_add() rewrites the metrics even if the new route ends up not being used at all. Another problem is that old metrics in inetpeer can reappear unexpectedly for a new route, e.g. 12sp0:~ # ip route add fec0::1 dev eth0 rto_min 1000 12sp0:~ # ip route del fec0::1 12sp0:~ # ip route add fec0::1 dev eth0 12sp0:~ # ip route change fec0::1 dev eth0 hoplimit 10 12sp0:~ # ip -6 route show fe80::/64 dev eth0 proto kernel metric 256 fec0::1 dev eth0 metric 1024 hoplimit 10 rto_min lock 1s Resolve the first problem by moving the setting of metrics down into fib6_add_rt2node() to the point we are sure we are inserting the new route into the tree. Second problem is addressed by introducing new flag DST_METRICS_FORCE_OVERWRITE which is set for a new host route in ip6_route_add() and makes ipv6_cow_metrics() always overwrite the metrics in inetpeer (even if they are not "new"); it is reset after that. v5: use a flag in _metrics member rather than one in flags v4: fix a typo making a condition always true (thanks to Hannes Frederic Sowa) v3: rewritten based on David Miller's idea to move setting the metrics (and allocation in non-host case) down to the point we already know the route is to be inserted. Also rebased to net-next as it is quite late in the cycle. Signed-off-by:
Michal Kubecek <mkubecek@suse.cz> Acked-by:
Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
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Christian Riesch authored
Signed-off-by:
Christian Riesch <christian.riesch@omicron.at> Cc: Dong Zhu <bluezhudong@gmail.com> Acked-by:
Richard Cochran <richardcochran@gmail.com> Signed-off-by:
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David S. Miller authored
This reverts commit 203191c3. A better version of this fix is forthcoming. Signed-off-by:
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Yuval Mintz authored
Commit 370d4a26 "bnx2x: Create workqueue for IOV related tasks" breaks bnx2x compilation when CONFIG_BNX2X_SRIOV is not set - "multiple definition of `bnx2x_schedule_iov_task'". Reported-by:
kbuild test robot <fengguang.wu@intel.com> Signed-off-by:
Yuval Mintz <Yuval.Mintz@qlogic.com> Acked-by:
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David S. Miller authored
Ying Xue says: ==================== tipc: clean up bearer and node layer This is another commit series which aims at facilitating future changes to the locking policy around nodes, links and bearers. Currently, the tipc routing hierarchy comprises the structures 'node', 'link' and 'bearer'. The whole hierarchy is protected by a big read/write lock (tipc_net_lock), to ensure that nothing is added or removed while any of these structures is being accessed. Obviously the locking policy makes node, link and bearer components closely bound together so that their relationship becomes extremely complex. In the worst case, such locking policy not only has a negative influence on performance, but also it's prone to lead to deadlock occasionally. In order to decouple the complex relationship between bearer and node as well as link, the locking policy is adjusted as follows: - Bearer level RTNL lock is used on update side, and RCU is used on read side. Meanwhile, all bearer instances including broadcast bearer are saved into bearer_list array. - Node and link level All node instances are saved into two tipc_node_list and node_htable lists. The two lists are protected by node_list_lock on write side, and they are guarded with RCU lock on read side. All members in node structure including link instances are protected by node spin lock. - The relationship between bearer and node When link accesses bearer, it first needs to find the bearer with its bearer identity from the bearer_list array. When bearer accesses node, it can iterate the node_htable hash list with the node address to find the corresponding node. In the new locking policy, every component has its private locking solution and the relationship between bearer and node is very simple, that is, they can find each other with node address or bearer identity from node_htable hash list or bearer_list array. But, prior to these changes, we need to do some necessary cleanup and code consolidation. This is what we do with this commit series. In a later series we will replace net_lock with RTNL as well as RCU lock to deploy the new locking policy. ==================== Signed-off-by: -
Ying Xue authored
Without properly implicit or explicit read memory barrier, it's unsafe to read an atomic variable with atomic_read() from another thread which is different with the thread of changing the atomic variable with atomic_inc() or atomic_dec(). So a stale tipc_num_links may be got with atomic_read() in tipc_node_get_links(). If the tipc_num_links variable type is converted from atomic to unsigned integer and node list lock is used to protect it, the issue would be avoided. Signed-off-by:
Ying Xue <ying.xue@windriver.com> Reviewed-by:
Erik Hugne <erik.hugne@ericsson.com> Reviewed-by:
Jon Maloy <jon.maloy@ericsson.com> Signed-off-by:
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Ying Xue authored
As tipc_node_list is protected by rcu read lock on read side, it's unnecessary to hold node_list_lock to protect tipc_node_list in tipc_node_get_links(). Instead, node_list_lock should just protects tipc_num_nodes in the function. Signed-off-by:
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Ying Xue authored
Convert tipc_node_list list and node_htable hash list to RCU lists. On read side, the two lists are protected with RCU read lock, and on update side, node_list_lock is applied to them. Signed-off-by:
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Ying Xue authored
When a node is created, tipc_net_lock read lock is first held and then node_create_lock is grabbed in order to prevent the same node from being created and inserted into both node list and hlist twice. But when we query node from the two node lists, we only hold tipc_net_lock read lock without grabbing node_create_lock. Obviously this locking policy is unable to guarantee that the two node lists are always synchronized especially when the operation of changing and accessing them occurs in different contexts like currently doing. Therefore, rename node_create_lock to node_list_lock to protect the two node lists, that is, whenever node is inserted into them or node is queried from them, the node_list_lock should be always held. As a result, tipc_net_lock read lock becomes redundant and then can be removed from the node query functions. Signed-off-by:
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Ying Xue authored
Now unicast bearer is dynamically allocated and placed into its identity specified slot of bearer_list array. When we search bearer_list array with a bearer identity, the corresponding bearer instance can be found. But broadcast bearer is statically allocated and it is not located in the bearer_list array yet. So we decide to enlarge bearer_list array into MAX_BEARERS + 1 slots, and its last slot stores the broadcast bearer so that the broadcast bearer can be found from bearer_list array with MAX_BEARERS as index. The change will help us reduce the complex relationship between bearer and link in the future. Signed-off-by:
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Ying Xue authored
After the allocation of tipc_bearer structure instance is converted from statical way to dynamical way, we identify whether a certain tipc_bearer structure pointer is valid by checking whether the pointer is NULL or not. So the active flag in tipc_bearer structure becomes redundant. Signed-off-by:
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Ying Xue authored
As part of the effort to introduce RCU protection for the bearer list, we first need to change it to a list of pointers. Signed-off-by:
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Ying Xue authored
The 'tipc_node_list' is guarded by tipc_net_lock and 'links' array defined in 'tipc_node' structure is protected by node lock as well. Without acquiring the two locks in named_cluster_distribute() a fatal oops may happen in case that a destroyed link might be got and then accessed. Therefore, above mentioned two locks must be held in named_cluster_distribute() to prevent the issue from happening accidentally. As 'links' array in node struct must be protected by node lock, we have to move the code of selecting an active link from tipc_link_xmit() to named_cluster_distribute() and then call __tipc_link_xmit() with the selected link to deliver name messages. Signed-off-by:
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Ying Xue authored
Due to the lacking of any credential, it's allowed to accept commands requested from remote nodes to query the local node status, which is prone to involve potential security risks. Instead, if we login to a remote node with ssh command, this approach is not only more safe than the remote management feature, but also it can give us more permissions like changing the remote node configuration. So it's reasonable for us to obsolete the remote management feature now. Signed-off-by:
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Ying Xue authored
tipc_node_create routine doesn't need to check whether a node object specified with a node address exists or not because its caller(ie, tipc_disc_recv_msg routine) has checked this before calling it. Signed-off-by:
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David S. Miller authored
Byungho An says: ==================== This is 14th posting for SAMSUNG SXGBE driver. Changes since v1: - changed name of driver to SXGbE as per Ben's comment - squashed Joe's neatening for many stuff in original patches Changes since v2: - updated and split binding document as per Mark's comment - clean up codes as per Joe's comment - removed unused fields and clean up codes as per Francois's comment - removed module parameters as per Dave's comment - moved driver directory to samsung/sxgbe/ Changes since v3: - fixed Missing a blank line after declarations as per Dave's comment - clean up codes as per Joe's comment - removed reference of net_device.{irq, base_addr} as per Francois's comment Changes since v4: - updated binding document and DT related function as per Mark's comment Changes since v5: - updated binding document and DT related function as per Florian's comment - fixed typo and shortened code as per Joe's comment Changes since v6: - updated TSO related functions as per Rayagond's comment - updated binding document as per Mark's comment - removed WoL patch from this patch set Changes since v7: - updated TSO related functions as per Rayagond's comment Changes since v8: - removed select and depends statement from vendor sub-section as per Dave's comment Changes since v9: - removed adv-add-map, force-sf-dma-modei and force-thresh-dma-mode from binding documnet as per Mark's comment Changes since v10: - clean up codes as per Francois's comment Changes since v11: - clean up mdio_read/write codes as per Francois's comment - changed irq acquisition error path as per Francois's comment - updated mdio and platform related codes as per Tomasz'comment - clean up dma related codes as per Vince's comment Changes since v12: - fixed typo Changes since v13: - clean up error path codes for irqs as per Francois's comment - removed unsupported functions for ehttoolirq as per Ben's comment ==================== Signed-off-by: -
Monam Agarwal authored
This patch replaces rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL) The rcu_assign_pointer() ensures that the initialization of a structure is carried out before storing a pointer to that structure. And in the case of the NULL pointer, there is no structure to initialize. So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p, NULL) Signed-off-by:
Monam Agarwal <monamagarwal123@gmail.com> Signed-off-by:
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Monam Agarwal authored
This patch replaces rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL) The rcu_assign_pointer() ensures that the initialization of a structure is carried out before storing a pointer to that structure. And in the case of the NULL pointer, there is no structure to initialize. So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p, NULL) Signed-off-by:
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Monam Agarwal authored
This patch replaces rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL) The rcu_assign_pointer() ensures that the initialization of a structure is carried out before storing a pointer to that structure. And in the case of the NULL pointer, there is no structure to initialize. So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p, NULL) Signed-off-by:
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Monam Agarwal authored
This patch replaces rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL) The rcu_assign_pointer() ensures that the initialization of a structure is carried out before storing a pointer to that structure. And in the case of the NULL pointer, there is no structure to initialize. So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p, NULL) Signed-off-by:
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