- 12 Sep, 2014 8 commits
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Sowmini Varadhan authored
When sending out a burst of packets across multiple descriptors, it is sufficient to send one LDC "start" trigger for the first descriptor, so do not send an LDC "start" for every pass through vnet_start_xmit. Similarly, it is sufficient to send one "DRING_STOPPED" trigger for the last dring (and if that fails, hold off and send the trigger later). Optimizations to the number of LDC messages helps avoid filling up the LDC channel with superfluous LDC messages that risk triggering flow-control on the channel, and also boosts performance. Signed-off-by:
Sowmini Varadhan <sowmini.varadhan@oracle.com> Acked-by:
Raghuram Kothakota <raghuram.kothakota@oracle.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Subbaraya Sundeep Bhatta authored
calling ether_setup is redundant since alloc_etherdev calls it. Signed-off-by:
Subbaraya Sundeep Bhatta <sbhatta@xilinx.com> Signed-off-by:
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Varka Bhadram authored
It will use pr_info_one() to print the version info of the driver in probe function only once. No need to use the static variable here. Signed-off-by:
Varka Bhadram <varkab@cdac.in> Signed-off-by:
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Scott Wood authored
Commit 2abb7cdc ("udp: Add support for doing checksum unnecessary conversion") caused napi_gro_cb structs with the "flush" field zero to take the "udp_gro_receive" path rather than the "set flush to 1" path that they would previously take. As a result I saw booting from an NFS root hang shortly after starting userspace, with "server not responding" messages. This change to the handling of "flush == 0" packets appears to be incidental to the goal of adding new code in the case where skb_gro_checksum_validate_zero_check() returns zero. Based on that and the fact that it breaks things, I'm assuming that it is unintentional. Fixes: 2abb7cdc ("udp: Add support for doing checksum unnecessary conversion") Cc: Tom Herbert <therbert@google.com> Signed-off-by:
Scott Wood <scottwood@freescale.com> Acked-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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David S. Miller authored
Alexander Duyck says: ==================== Address reference counting issues with sock_queue_err_skb After looking over the code for skb_clone_sk after some comments made by Eric Dumazet I have come to the conclusion that skb_clone_sk is taking the correct approach in how to handle the sk_refcnt when creating a buffer that is eventually meant to be returned to the socket via the sock_queue_err_skb function. However upon review of other callers I found what I believe to be a possible reference count issue in the path for handling "wifi ack" packets. To address this I have applied the same logic that is currently in place so that the sk_refcnt will be forced to stay at least 1, or we will not provide an skb to return in the sk_error_queue. ==================== Signed-off-by: -
Alexander Duyck authored
There is a possible issue with the use, or lack thereof of sk_refcnt and sk_wmem_alloc in the wifi ack status functionality. Specifically if a socket were to request acknowledgements, and the socket were to have sk_refcnt drop to 0 resulting in it waiting on sk_wmem_alloc to reach 0 it would be possible to have sock_queue_err_skb orphan the last buffer, resulting in __sk_free being called on the socket. After this the buffer is enqueued on sk_error_queue, however the queue has already been flushed resulting in at least a memory leak, if not a data corruption. Signed-off-by:
Alexander Duyck <alexander.h.duyck@intel.com> Acked-by:
Johannes Berg <johannes@sipsolutions.net> Signed-off-by:
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Alexander Duyck authored
This change adds some documentation to the call skb_clone_sk. This is meant to help clarify the purpose of the function for other developers. Signed-off-by:
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Sébastien Barré authored
This reverts commit c801e3cc ("ipv4: Clarify in docs that accept_local requires rp_filter."). It is not needed anymore since commit 1dced6a8 ("ipv4: Restore accept_local behaviour in fib_validate_source()"). Suggested-by:
Julian Anastasov <ja@ssi.bg> Cc: Gregory Detal <gregory.detal@uclouvain.be> Cc: Christoph Paasch <christoph.paasch@uclouvain.be> Cc: Hannes Frederic Sowa <hannes@redhat.com> Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by:
Sébastien Barré <sebastien.barre@uclouvain.be> Signed-off-by:
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- 10 Sep, 2014 32 commits
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Daniel Borkmann authored
Since BPF JIT depends on the availability of module_alloc() and module_free() helpers (HAVE_BPF_JIT and MODULES), we better build that code only in case we have BPF_JIT in our config enabled, just like with other JIT code. Fixes builds for arm/marzen_defconfig and sh/rsk7269_defconfig. ==================== kernel/built-in.o: In function `bpf_jit_binary_alloc': /home/cwang/linux/kernel/bpf/core.c:144: undefined reference to `module_alloc' kernel/built-in.o: In function `bpf_jit_binary_free': /home/cwang/linux/kernel/bpf/core.c:164: undefined reference to `module_free' make: *** [vmlinux] Error 1 ==================== Reported-by:
Fengguang Wu <fengguang.wu@intel.com> Fixes: 738cbe72 ("net: bpf: consolidate JIT binary allocator") Signed-off-by:
Daniel Borkmann <dborkman@redhat.com> Acked-by:
Alexei Starovoitov <ast@plumgrid.com> Signed-off-by:
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David S. Miller authored
Hariprasad Shenai says: ==================== cxgb4: Allow FW size upto 1MB, support for S25FL032P flash and misc. fixes This patch series adds support to allow FW size upto 1MB, support for S25FL032P flash. Fix t4_flash_erase_sectors to throw an error, when erase sector aren't in the flash and also warning message when adapters have flashes less than 2Mb. Adds device id of new adapter and removes device id of debug adapter. The patches series is created against 'net-next' tree. And includes patches on cxgb4 driver and cxgb4vf driver. We have included all the maintainers of respective drivers. Kindly review the change and let us know in case of any review comments. ==================== Signed-off-by: -
Hariprasad Shenai authored
Signed-off-by:
Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by:
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Hariprasad Shenai authored
Based on original work by Casey Leedom <leedom@chelsio.com> Signed-off-by:
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Hariprasad Shenai authored
cxgb4: Fix t4_flash_erase_sectors() to throw an error when requested to erase sectors which aren't in the FLASH Based on original work by Casey Leedom <leedom@chelsio.com> Signed-off-by:
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Hariprasad Shenai authored
Add support for Spansion S25FL032P flash Based on original work by Dimitris Michailidis Signed-off-by:
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Hariprasad Shenai authored
Based on original work by Casey Leedom <leedom@chelsio.com> Signed-off-by:
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Erik Hugne authored
This fixes the following sparse warnings: sparse: symbol 'tipc_update_nametbl' was not declared. Should it be static? Also, the function is changed to return bool upon success, rather than a potentially freed pointer. Signed-off-by:
Erik Hugne <erik.hugne@ericsson.com> Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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Romain Perier authored
Free resources before being disconnected from phy and calling core driver is wrong and should not happen. It avoids a delay of 4-5s caused by the timeout of phy_disconnect(). Signed-off-by:
Romain Perier <romain.perier@gmail.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-nextDavid S. Miller authored
Pablo Neira Ayuso says: ==================== nf-next pull request The following patchset contains Netfilter/IPVS updates for your net-next tree. Regarding nf_tables, most updates focus on consolidating the NAT infrastructure and adding support for masquerading. More specifically, they are: 1) use __u8 instead of u_int8_t in arptables header, from Mike Frysinger. 2) Add support to match by skb->pkttype to the meta expression, from Ana Rey. 3) Add support to match by cpu to the meta expression, also from Ana Rey. 4) A smatch warning about IPSET_ATTR_MARKMASK validation, patch from Vytas Dauksa. 5) Fix netnet and netportnet hash types the range support for IPv4, from Sergey Popovich. 6) Fix missing-field-initializer warnings resolved, from Mark Rustad. 7) Dan Carperter reported possible integer overflows in ipset, from Jozsef Kadlecsick. 8) Filter out accounting objects in nfacct by type, so you can selectively reset quotas, from Alexey Perevalov. 9) Move specific NAT IPv4 functions to the core so x_tables and nf_tables can share the same NAT IPv4 engine. 10) Use the new NAT IPv4 functions from nft_chain_nat_ipv4. 11) Move specific NAT IPv6 functions to the core so x_tables and nf_tables can share the same NAT IPv4 engine. 12) Use the new NAT IPv6 functions from nft_chain_nat_ipv6. 13) Refactor code to add nft_delrule(), which can be reused in the enhancement of the NFT_MSG_DELTABLE to remove a table and its content, from Arturo Borrero. 14) Add a helper function to unregister chain hooks, from Arturo Borrero. 15) A cleanup to rename to nft_delrule_by_chain for consistency with the new nft_*() functions, also from Arturo. 16) Add support to match devgroup to the meta expression, from Ana Rey. 17) Reduce stack usage for IPVS socket option, from Julian Anastasov. 18) Remove unnecessary textsearch state initialization in xt_string, from Bojan Prtvar. 19) Add several helper functions to nf_tables, more work to prepare the enhancement of NFT_MSG_DELTABLE, again from Arturo Borrero. 20) Enhance NFT_MSG_DELTABLE to delete a table and its content, from Arturo Borrero. 21) Support NAT flags in the nat expression to indicate the flavour, eg. random fully, from Arturo. 22) Add missing audit code to ebtables when replacing tables, from Nicolas Dichtel. 23) Generalize the IPv4 masquerading code to allow its re-use from nf_tables, from Arturo. 24) Generalize the IPv6 masquerading code, also from Arturo. 25) Add the new masq expression to support IPv4/IPv6 masquerading from nf_tables, also from Arturo. ==================== Signed-off-by: -
Joe Perches authored
Use the more common pr_warn. Other miscellanea: o Coalesce formats o Realign arguments Signed-off-by:
Joe Perches <joe@perches.com> Signed-off-by:
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Joe Perches authored
Use the more common pr_warn. Coalesce formats. Realign arguments. Signed-off-by:
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Joe Perches authored
Use the more common pr_warn. Realign arguments. Signed-off-by:
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Joe Perches authored
Use the more common pr_warn. Signed-off-by:
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David S. Miller authored
Tom Herbert says: ==================== net: enable GRO for IPIP and SIT This patch sets populates the IPIP and SIT offload structures with gro_receive and gro_complete functions. This enables use of GRO for these. Also, fixed a problem in IPv6 where we were not properly initializing flush_id. Peformance results are below. Note that these tests were done on bnx2x which doesn't provide RX checksum offload of IPIP or SIT (i.e. does not give CHEKCSUM_COMPLETE). Also, we don't get 4-tuple hash for RSS only 2-tuple in this case so all the packets between two hosts are winding up on the same queue. Net result is the interrupting CPU is the bottleneck in GRO (checksumming every packet there). Testing: netperf TCP_STREAM between two hosts using bnx2x. * Before fix IPIP 1 connection 6.53% CPU utilization 6544.71 Mbps 20 connections 13.79% CPU utilization 9284.54 Mbps SIT 1 connection 6.68% CPU utilization 5653.36 Mbps 20 connections 18.88% CPU utilization 9154.61 Mbps * After fix IPIP 1 connection 5.73% CPU utilization 9279.53 Mbps 20 connections 7.14% CPU utilization 7279.35 Mbps SIT 1 connection 2.95% CPU utilization 9143.36 Mbps 20 connections 7.09% CPU utilization 6255.3 Mbps ==================== Signed-off-by: -
Tom Herbert authored
Add ipv6_gro_receive and ipv6_gro_complete to sit_offload to support GRO. Signed-off-by:
Tom Herbert <therbert@google.com> Signed-off-by:
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Tom Herbert authored
Add inet_gro_receive and inet_gro_complete to ipip_offload to support GRO. Signed-off-by:
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Tom Herbert authored
In TCP gro we check flush_id which is derived from the IP identifier. In IPv4 gro path the flush_id is set with the expectation that every matched packet increments IP identifier. In IPv6, the flush_id is never set and thus is uinitialized. What's worse is that in IPv6 over IPv4 encapsulation, the IP identifier is taken from the outer header which is currently not incremented on every packet for Linux stack, so GRO in this case never matches packets (identifier is not increasing). This patch clears flush_id for every time for a matched packet in IPv6 gro_receive. We need to do this each time to overwrite the setting that would be done in IPv4 gro_receive per the outer header in IPv6 over Ipv4 encapsulation. Signed-off-by:
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Joe Perches authored
Use the much more common pr_warn instead of pr_warning. Other miscellanea: o Typo fixes submiting/submitting o Coalesce formats o Realign arguments o Add missing terminating '\n' to formats Signed-off-by:
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Florian Westphal authored
Signed-off-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
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Eric Dumazet authored
net/ipv4/udp_offload.c:339:5: warning: symbol 'udp4_gro_complete' was not declared. Should it be static? Signed-off-by:
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Eric Dumazet authored
net/core/net_namespace.c:227:18: warning: incorrect type in argument 1 (different address spaces) net/core/net_namespace.c:227:18: expected void const *<noident> net/core/net_namespace.c:227:18: got struct net_generic [noderef] <asn:4>*gen We can use rcu_access_pointer() here as read-side access to the pointer was removed at least one grace period ago. Signed-off-by:
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Eric Dumazet authored
net/ipv6/udp_offload.c:159:5: warning: symbol 'udp6_gro_complete' was not declared. Should it be static? Signed-off-by:
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Eric Dumazet authored
Remove one sparse warning : net/ipv4/ip_sockglue.c:328:22: warning: incorrect type in assignment (different address spaces) net/ipv4/ip_sockglue.c:328:22: expected struct ip_ra_chain [noderef] <asn:4>*next net/ipv4/ip_sockglue.c:328:22: got struct ip_ra_chain *[assigned] ra And replace one rcu_assign_ptr() by RCU_INIT_POINTER() where applicable. Signed-off-by:
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Daniel Borkmann authored
It's not used anywhere, so just remove these. Signed-off-by:
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Andy Shevchenko authored
Instead of looping in the code let's use kernel extension to dump small buffers. Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by:
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hayeswang authored
Replace mdelay with usleep_range to avoid busy loop. Signed-off-by:
Hayes Wang <hayeswang@realtek.com> Signed-off-by:
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Willem de Bruijn authored
Few packets have timestamping enabled. Exit sock_tx_timestamp quickly in this common case. Signed-off-by:
Willem de Bruijn <willemb@google.com> Signed-off-by:
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Florian Westphal authored
not used anymore since ddecf0f4 (net_sched: sfq: add optional RED on top of SFQ). Signed-off-by:
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Rick Jones authored
Convert the normal transmit completion path from dev_kfree_skb_any() to dev_consume_skb_any() to help keep dropped packet profiling meaningful. Signed-off-by:
Rick Jones <rick.jones2@hp.com> Signed-off-by:
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David S. Miller authored
Nikolay Aleksandrov says: ==================== bonding: get rid of bond->lock This patch-set removes the last users of bond->lock and converts the places that needed it for sync to use curr_slave_lock or RCU as appropriate. I've run this with lockdep and have stress-tested it via loading/unloading and enslaving/releasing in parallel while outputting bond's proc, I didn't see any issues. Please pay special attention to the procfs change, I've done about an hour of stress-testing on it and have checked that the event that causes the bonding to delete its proc entry (NETDEV_UNREGISTER) is called before ndo_uninit() and the freeing of the dev so any readers will sync with that. Also ran sparse checks and there were no splats. v2: Add patch 0001/cxgb4 bond->lock removal, RTNL should be held in the notifier call, the other patches are the same. Also tested with allmodconfig to make sure there're no more users of bond->lock. Changes from the RFC: use RCU in procfs instead of RTNL since RTNL might lead to a deadlock with unloading and also is much slower. The bond destruction syncs with proc via the proc locks. There's one new patch that converts primary_slave to use RCU as it was necessary to fix a longstanding bugs in sysfs and procfs and to make it easy to migrate bond's procfs to RCU. And of course rebased on top of net-next current. This is the first patch-set in a series that should simplify the bond's locking requirements and will make it easier to define the locking conditions necessary for the various paths. The goal is to rely on RTNL and rcu alone, an extra lock would be needed in a few special cases that would be documented very well. ==================== Signed-off-by: -
Nikolay Aleksandrov authored
The usage of bond->lock in bond_main.c was completely unnecessary as it didn't help to sync with anything, most of the spots already had RTNL. Since there're no more users of bond->lock, remove it. Signed-off-by:
Nikolay Aleksandrov <nikolay@redhat.com> Signed-off-by:
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