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2018-05-08net: core: rework basic flow dissection helperPaolo Abeni1-3/+3
When the core networking needs to detect the transport offset in a given packet and parse it explicitly, a full-blown flow_keys struct is used for storage. This patch introduces a smaller keys store, rework the basic flow dissect helper to use it, and apply this new helper where possible - namely in skb_probe_transport_header(). The used flow dissector data structures are renamed to match more closely the new role. The above gives ~50% performance improvement in micro benchmarking around skb_probe_transport_header() and ~30% around eth_get_headlen(), mostly due to the smaller memset. Small, but measurable improvement is measured also in macro benchmarking. v1 -> v2: use the new helper in eth_get_headlen() and skb_get_poff(), as per DaveM suggestion Suggested-by: David Miller <davem@davemloft.net> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16networking: make skb_push & __skb_push return void pointersJohannes Berg1-1/+1
It seems like a historic accident that these return unsigned char *, and in many places that means casts are required, more often than not. Make these functions return void * and remove all the casts across the tree, adding a (u8 *) cast only where the unsigned char pointer was used directly, all done with the following spatch: @@ expression SKB, LEN; typedef u8; identifier fn = { skb_push, __skb_push, skb_push_rcsum }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_push, __skb_push, skb_push_rcsum }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) @@ expression SKB, LEN; identifier fn = { skb_push, __skb_push, skb_push_rcsum }; @@ - fn(SKB, LEN)[0] + *(u8 *)fn(SKB, LEN) Note that the last part there converts from push(...)[0] to the more idiomatic *(u8 *)push(...). Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-16Merge branch 'master' of ↵David S. Miller1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next Steffen Klassert says: ==================== pull request (net-next): ipsec-next 2017-02-16 1) Make struct xfrm_input_afinfo const, nothing writes to it. From Florian Westphal. 2) Remove all places that write to the afinfo policy backend and make the struct const then. From Florian Westphal. 3) Prepare for packet consuming gro callbacks and add ESP GRO handlers. ESP packets can be decapsulated at the GRO layer then. It saves a round through the stack for each ESP packet. Please note that this has a merge coflict between commit 63fca65d0863 ("net: add confirm_neigh method to dst_ops") from net-next and 3d7d25a68ea5 ("xfrm: policy: remove garbage_collect callback") a2817d8b279b ("xfrm: policy: remove family field") from ipsec-next. The conflict can be solved as it is done in linux-next. Please pull or let me know if there are problems. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-15net: Add a skb_gro_flush_final helper.Steffen Klassert1-1/+1
Add a skb_gro_flush_final helper to prepare for consuming skbs in call_gro_receive. We will extend this helper to not touch the skb if the skb is consumed by a gro callback with a followup patch. We need this to handle the upcomming IPsec ESP callbacks as they reinject the skb to the napi_gro_receive asynchronous. The handler is used in all gro_receive functions that can call the ESP gro handlers. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2017-02-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-0/+1
2017-02-08net: introduce device min_header_lenWillem de Bruijn1-0/+1
The stack must not pass packets to device drivers that are shorter than the minimum link layer header length. Previously, packet sockets would drop packets smaller than or equal to dev->hard_header_len, but this has false positives. Zero length payload is used over Ethernet. Other link layer protocols support variable length headers. Support for validation of these protocols removed the min length check for all protocols. Introduce an explicit dev->min_header_len parameter and drop all packets below this value. Initially, set it to non-zero only for Ethernet and loopback. Other protocols can follow in a patch to net-next. Fixes: 9ed988cd5915 ("packet: validate variable length ll headers") Reported-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: Willem de Bruijn <willemb@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Acked-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-29net: add devm version of alloc_etherdev_mqs functionRafał Miłecki1-0/+28
This patch adds devm_alloc_etherdev_mqs function and devm_alloc_etherdev macro. These can be used for simpler netdev allocation without having to care about calling free_netdev. Thanks to this change drivers, their error paths and removal paths may get simpler by a bit. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-07net: make default TX queue length a defined constantJesper Dangaard Brouer1-1/+2
The default TX queue length of Ethernet devices have been a magic constant of 1000, ever since the initial git import. Looking back in historical trees[1][2] the value used to be 100, with the same comment "Ethernet wants good queues". The commit[3] that changed this from 100 to 1000 didn't describe why, but from conversations with Robert Olsson it seems that it was changed when Ethernet devices went from 100Mbit/s to 1Gbit/s, because the link speed increased x10 the queue size were also adjusted. This value later caused much heartache for the bufferbloat community. This patch merely moves the value into a defined constant. [1] https://git.kernel.org/cgit/linux/kernel/git/davem/netdev-vger-cvs.git/ [2] https://git.kernel.org/cgit/linux/kernel/git/tglx/history.git/ [3] https://git.kernel.org/tglx/history/c/98921832c232 Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-1/+1
Mostly simple overlapping changes. For example, David Ahern's adjacency list revamp in 'net-next' conflicted with an adjacency list traversal bug fix in 'net'. Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-20net: add recursion limit to GROSabrina Dubroca1-1/+1
Currently, GRO can do unlimited recursion through the gro_receive handlers. This was fixed for tunneling protocols by limiting tunnel GRO to one level with encap_mark, but both VLAN and TEB still have this problem. Thus, the kernel is vulnerable to a stack overflow, if we receive a packet composed entirely of VLAN headers. This patch adds a recursion counter to the GRO layer to prevent stack overflow. When a gro_receive function hits the recursion limit, GRO is aborted for this skb and it is processed normally. This recursion counter is put in the GRO CB, but could be turned into a percpu counter if we run out of space in the CB. Thanks to Vladimír Beneš <vbenes@redhat.com> for the initial bug report. Fixes: CVE-2016-7039 Fixes: 9b174d88c257 ("net: Add Transparent Ethernet Bridging GRO support.") Fixes: 66e5133f19e9 ("vlan: Add GRO support for non hardware accelerated vlan") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Reviewed-by: Jiri Benc <jbenc@redhat.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-13net: deprecate eth_change_mtu, remove usageJarod Wilson1-2/+3
With centralized MTU checking, there's nothing productive done by eth_change_mtu that isn't already done in dev_set_mtu, so mark it as deprecated and remove all usage of it in the kernel. All callers have been audited for calls to alloc_etherdev* or ether_setup directly, which means they all have a valid dev->min_mtu and dev->max_mtu. Now eth_change_mtu prints out a netdev_warn about being deprecated, for the benefit of out-of-tree drivers that might be utilizing it. Of note, dvb_net.c actually had dev->mtu = 4096, while using eth_change_mtu, meaning that if you ever tried changing it's mtu, you couldn't set it above 1500 anymore. It's now getting dev->max_mtu also set to 4096 to remedy that. v2: fix up lantiq_etop, missed breakage due to drive not compiling on x86 CC: netdev@vger.kernel.org Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-24eth: Pull header from first fragment via eth_get_headlenAlexander Duyck1-1/+2
We want to try and pull the L4 header in if it is available in the first fragment. As such add the flag to indicate we want to pull the headers on the first fragment in. Signed-off-by: Alexander Duyck <aduyck@mirantis.com> Acked-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06net: Add eth_platform_get_mac_address() helper.David S. Miller1-0/+31
A repeating pattern in drivers has become to use OF node information and, if not found, platform specific host information to extract the ethernet address for a given device. Currently this is done with a call to of_get_mac_address() and then some ifdef'd stuff for SPARC. Consolidate this into a portable routine, and provide the arch_get_platform_mac_address() weak function hook for all architectures to implement if they want. Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-28net: help compiler generate better code in eth_get_headlenJesper Dangaard Brouer1-1/+1
Noticed that the compiler (gcc version 4.8.5 20150623 (Red Hat 4.8.5-4) (GCC)) generated suboptimal assembler code in eth_get_headlen(). This early return coding style is usually not an issue, on super scalar CPUs, but the compiler choose to put the return statement after this very unlikely branch, thus creating larger jump down to the likely code path. Performance wise, I could measure slightly less L1-icache-load-misses and less branch-misses, and an improvement of 1 nanosec with an IP-forwarding use-case with 257 bytes packets with ixgbe (CPU i7-4790K @ 4.00GHz). Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-01flow_dissector: Add flags argument to skb_flow_dissector functionsTom Herbert1-1/+1
The flags argument will allow control of the dissection process (for instance whether to parse beyond L3). Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-09net: ethernet: Fix double word "the the" in eth.cMasanari Iida1-1/+1
This patch fix double word "the the" in Documentation/DocBook/networking/API-eth-get-headlen.html Documentation/DocBook/networking/netdev.html Documentation/DocBook/networking.xml These files are generated from comment in source, so I have to fix comment in net/ethernet/eth.c. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-04net: Add full IPv6 addresses to flow_keysTom Herbert1-1/+1
This patch adds full IPv6 addresses into flow_keys and uses them as input to the flow hash function. The implementation supports either IPv4 or IPv6 addresses in a union, and selector is used to determine how may words to input to jhash2. We also add flow_get_u32_dst and flow_get_u32_src functions which are used to get a u32 representation of the source and destination addresses. For IPv6, ipv6_addr_hash is called. These functions retain getting the legacy values of src and dst in flow_keys. With this patch, Ethertype and IP protocol are now included in the flow hash input. Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-01net: Add priority to packet_offload objects.David S. Miller1-0/+1
When we scan a packet for GRO processing, we want to see the most common packet types in the front of the offload_base list. So add a priority field so we can handle this properly. IPv4/IPv6 get the highest priority with the implicit zero priority field. Next comes ethernet with a priority of 10, and then we have the MPLS types with a priority of 15. Suggested-by: Eric Dumazet <eric.dumazet@gmail.com> Suggested-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-13flow_dissect: use programable dissector in skb_flow_dissect and friendsJiri Pirko1-3/+3
Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-13net: move *skb_get_poff declarations into correct headerJiri Pirko1-0/+1
Since these functions are defined in flow_dissector.c, move header declarations from skbuff.h into flow_dissector.h Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-05etherdev: Fix sparse error, make test usable by other functionsAlexander Duyck1-1/+1
This change does two things. First it fixes a sparse error for the fact that the __be16 degrades to an integer. Since that is actually what I am kind of doing I am simply working around that by forcing both sides of the comparison to u16. Also I realized on some compilers I was generating another instruction for big endian systems such as PowerPC since it was masking the value before doing the comparison. So to resolve that I have simply pulled the mask out and wrapped it in an #ifndef __BIG_ENDIAN. Lastly I pulled this all out into its own function. I notices there are similar checks in a number of other places so this function can be reused there to help reduce overhead in these paths as well. Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-03etherdev: Use skb->data to retrieve Ethernet header instead of eth_hdrAlexander Duyck1-1/+2
Avoid recomputing the Ethernet header location and instead just use the pointer provided by skb->data. The problem with using eth_hdr is that the compiler wasn't smart enough to realize that skb->head + skb->mac_header was the same thing as skb->data before it added ETH_HLEN. By just caching it off before calling skb_pull_inline we can avoid a few unnecessary instructions. Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-03etherdev: Process is_multicast_ether_addr at same size as other operationsAlexander Duyck1-1/+1
This change makes it so that we process the address in is_multicast_ether_addr at the same size as the other calls. This allows us to avoid duplicate reads when used with other calls such as is_zero_ether_addr or eth_addr_copy. In addition I have added a 64 bit version of the function so in eth_type_trans we can process the destination address as a 64 bit value throughout. Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-03etherdev: Avoid unnecessary byte swap in check for EthertypeAlexander Duyck1-1/+1
This change takes advantage of the fact that ETH_P_802_3_MIN is aligned to 512 so as a result we can actually ignore the lower 8b when comparing the Ethertype to ETH_P_802_3_MIN. This allows us to avoid a byte swap by simply masking the value and comparing it to the byte swapped value for ETH_P_802_3_MIN. Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-03ethernet: Use eth_<foo>_addr instead of memsetJoe Perches1-2/+2
Use the built-in function instead of memset. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-02net: Kill dev_rebuild_headerEric W. Biederman1-34/+0
Now that there are no more users kill dev_rebuild_header and all of it's implementations. This is long overdue. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-02net: Add Transparent Ethernet Bridging GRO support.Jesse Gross1-0/+92
Currently the only tunnel protocol that supports GRO with encapsulated Ethernet is VXLAN. This pulls out the Ethernet code into a proper layer so that it can be used by other tunnel protocols such as GRE and Geneve. Signed-off-by: Jesse Gross <jesse@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-05net: Add function for parsing the header length out of linear ethernet framesAlexander Duyck1-0/+27
This patch updates some of the flow_dissector api so that it can be used to parse the length of ethernet buffers stored in fragments. Most of the changes needed were to __skb_get_poff as it needed to be updated to support sending a linear buffer instead of a skb. I have split __skb_get_poff into two functions, the first is skb_get_poff and it retains the functionality of the original __skb_get_poff. The other function is __skb_get_poff which now works much like __skb_flow_dissect in relation to skb_flow_dissect in that it provides the same functionality but works with just a data buffer and hlen instead of needing an skb. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-27net: dsa: reduce number of protocol hooksFlorian Fainelli1-5/+2
DSA is currently registering one packet_type function per EtherType it needs to intercept in the receive path of a DSA-enabled Ethernet device. Right now we have three of them: trailer, DSA and eDSA, and there might be more in the future, this will not scale to the addition of new protocols. This patch proceeds with adding a new layer of abstraction and two new functions: dsa_switch_rcv() which will dispatch into the tag-protocol specific receive function implemented by net/dsa/tag_*.c dsa_slave_xmit() which will dispatch into the tag-protocol specific transmit function implemented by net/dsa/tag_*.c When we do create the per-port slave network devices, we iterate over the switch protocol to assign the DSA-specific receive and transmit operations. A new fake ethertype value is used: ETH_P_XDSA to illustrate the fact that this is no longer going to look like ETH_P_DSA or ETH_P_TRAILER like it used to be. This allows us to greatly simplify the check in eth_type_trans() and always override the skb->protocol with ETH_P_XDSA for Ethernet switches tagged protocol, while also reducing the number repetitive slave netdevice_ops assignments. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-15net: set name_assign_type in alloc_netdev()Tom Gundersen1-1/+2
Extend alloc_netdev{,_mq{,s}}() to take name_assign_type as argument, and convert all users to pass NET_NAME_UNKNOWN. Coccinelle patch: @@ expression sizeof_priv, name, setup, txqs, rxqs, count; @@ ( -alloc_netdev_mqs(sizeof_priv, name, setup, txqs, rxqs) +alloc_netdev_mqs(sizeof_priv, name, NET_NAME_UNKNOWN, setup, txqs, rxqs) | -alloc_netdev_mq(sizeof_priv, name, setup, count) +alloc_netdev_mq(sizeof_priv, name, NET_NAME_UNKNOWN, setup, count) | -alloc_netdev(sizeof_priv, name, setup) +alloc_netdev(sizeof_priv, name, NET_NAME_UNKNOWN, setup) ) v9: move comments here from the wrong commit Signed-off-by: Tom Gundersen <teg@jklm.no> Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-16net: eth_type_trans() should use skb_header_pointer()Eric Dumazet1-2/+5
eth_type_trans() can read uninitialized memory as drivers do not necessarily pull more than 14 bytes in skb->head before calling it. As David suggested, we can use skb_header_pointer() to fix this without breaking some drivers that might not expect eth_type_trans() pulling 2 additional bytes. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-30ethernet: use likely() for common Ethernet encapstephen hemminger1-4/+5
Mark code path's likely/unlikely based on most common usage. * Very few devices use dsa tags. * Most traffic is Ethernet (not 802.2) * No sane person uses trailer type or Novell encapsulation Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-30ethernet: cleanup eth_type_transstephen hemminger1-14/+3
Remove old legacy comment and weird if condition. The comment has outlived it's stay and is throwback to some early net code (before my time). Maybe Dave remembers what it meant. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-20net: ethernet: eth.c: removed checkpatch warnings and errorsAvinash Kumar1-3/+3
removed these checkpatch.pl warnings: net/ethernet/eth.c:61: WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h> net/ethernet/eth.c:136: WARNING: Prefer netdev_dbg(netdev, ... then dev_dbg(dev, ... then pr_debug(... to printk(KERN_DEBUG ... net/ethernet/eth.c:181: ERROR: space prohibited before that close parenthesis ')' Signed-off-by: Avinash Kumar <avi.kp.137@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-16net: Fix sysfs_format_mac() code duplication.David S. Miller1-20/+1
It's just a duplicate implementation of "%*phC". Thanks to Joe Perches for showing that we had exactly this support in the lib/vsprintf.c code already. Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-28net: add ETH_P_802_3_MINSimon Horman1-1/+1
Add a new constant ETH_P_802_3_MIN, the minimum ethernet type for an 802.3 frame. Frames with a lower value in the ethernet type field are Ethernet II. Also update all the users of this value that David Miller and I could find to use the new constant. Also correct a bug in util.c. The comparison with ETH_P_802_3_MIN should be >= not >. As suggested by Jesse Gross. Compile tested only. Cc: David Miller <davem@davemloft.net> Cc: Jesse Gross <jesse@nicira.com> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: John W. Linville <linville@tuxdriver.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Bart De Schuymer <bart.de.schuymer@pandora.be> Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: Patrick McHardy <kaber@trash.net> Cc: Marcel Holtmann <marcel@holtmann.org> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: Johan Hedberg <johan.hedberg@gmail.com> Cc: linux-bluetooth@vger.kernel.org Cc: netfilter-devel@vger.kernel.org Cc: bridge@lists.linux-foundation.org Cc: linux-wireless@vger.kernel.org Cc: linux1394-devel@lists.sourceforge.net Cc: linux-media@vger.kernel.org Cc: netdev@vger.kernel.org Cc: dev@openvswitch.org Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-21net: split eth_mac_addr for better error handlingStefan Hajnoczi1-6/+35
When we set mac address, software mac address in system and hardware mac address all need to be updated. Current eth_mac_addr() doesn't allow callers to implement error handling nicely. This patch split eth_mac_addr() to prepare part and real commit part, then we can prepare first, and try to change hardware address, then do the real commit if hardware address is set successfully. Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com> Signed-off-by: Amos Kong <akong@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-03net: remove unnecessary NET_ADDR_RANDOM "bitclean"Jiri Pirko1-2/+0
NET_ADDR_SET is set in dev_set_mac_address() no need to alter dev->addr_assign_type value in drivers. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-19ipx: move peII functionsstephen hemminger2-39/+0
The Ethernet II wrapper is only used by IPX protocol, may have once been used by Appletalk but not currently. Therefore it makes sense to move it to the IPX dust bin and drop the exports. Build tested only. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10net: Fix (nearly-)kernel-doc comments for various functionsBen Hutchings1-0/+3
Fix incorrect start markers, wrapped summary lines, missing section breaks, incorrect separators, and some name mismatches. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-30net: introduce new priv_flag indicating iface capable of change mac when runningJiri Pirko1-1/+1
Introduce IFF_LIVE_ADDR_CHANGE priv_flag and use it to disable netif_running() check in eth_mac_addr() Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-10net, drivers/net: Convert compare_ether_addr_64bits to ether_addr_equal_64bitsJoe Perches1-2/+3
Use the new bool function ether_addr_equal_64bits to add some clarity and reduce the likelihood for misuse of compare_ether_addr_64bits for sorting. Done via cocci script: $ cat compare_ether_addr_64bits.cocci @@ expression a,b; @@ - !compare_ether_addr_64bits(a, b) + ether_addr_equal_64bits(a, b) @@ expression a,b; @@ - compare_ether_addr_64bits(a, b) + !ether_addr_equal_64bits(a, b) @@ expression a,b; @@ - !ether_addr_equal_64bits(a, b) == 0 + ether_addr_equal_64bits(a, b) @@ expression a,b; @@ - !ether_addr_equal_64bits(a, b) != 0 + !ether_addr_equal_64bits(a, b) @@ expression a,b; @@ - ether_addr_equal_64bits(a, b) == 0 + !ether_addr_equal_64bits(a, b) @@ expression a,b; @@ - ether_addr_equal_64bits(a, b) != 0 + ether_addr_equal_64bits(a, b) @@ expression a,b; @@ - !!ether_addr_equal_64bits(a, b) + ether_addr_equal_64bits(a, b) Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-15net: cleanup unsigned to unsigned intEric Dumazet1-1/+1
Use of "unsigned int" is preferred to bare "unsigned" in net tree. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-28Remove all #inclusions of asm/system.hDavid Howells1-1/+0
Remove all #inclusions of asm/system.h preparatory to splitting and killing it. Performed with the following command: perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *` Signed-off-by: David Howells <dhowells@redhat.com>
2012-02-13eth: reset addr_assign_type if eth_mac_addr() calledDanny Kukawka1-0/+2
If eth_mac_addr() get called, usually if SIOCSIFHWADDR was used to change the MAC of a ethernet device, reset the addr_assign_type to NET_ADDR_PERM if the state was NET_ADDR_RANDOM before. Reset the state since the MAC is no longer random at least not from the kernel side. v2: changed to bitops, removed if() Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-09-15net: don't clear IFF_XMIT_DST_RELEASE in ether_setupnhorman1-1/+1
d88733150 introduced the IFF_SKB_TX_SHARING flag, which I unilaterally set in ether_setup. In doing this I didn't realize that other flags (such as IFF_XMIT_DST_RELEASE) might be set prior to calling the ether_setup routine. This patch changes ether_setup to or in SKB_TX_SHARING so as not to inadvertently clear other existing flags. Thanks to Pekka Riikonen for pointing out my error Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Reported-by: Pekka Riikonen <priikone@iki.fi> CC: "David S. Miller" <davem@davemloft.net> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-27net: add IFF_SKB_TX_SHARED flag to priv_flagsNeil Horman1-0/+1
Pktgen attempts to transmit shared skbs to net devices, which can't be used by some drivers as they keep state information in skbs. This patch adds a flag marking drivers as being able to handle shared skbs in their tx path. Drivers are defaulted to being unable to do so, but calling ether_setup enables this flag, as 90% of the drivers calling ether_setup touch real hardware and can handle shared skbs. A subsequent patch will audit drivers to ensure that the flag is set properly Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Reported-by: Jiri Pirko <jpirko@redhat.com> CC: Robert Olsson <robert.olsson@its.uu.se> CC: Eric Dumazet <eric.dumazet@gmail.com> CC: Alexey Dobriyan <adobriyan@gmail.com> CC: David S. Miller <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-25net: fix eth.c kernel-doc warningRandy Dunlap1-0/+1
From: Randy Dunlap <rdunlap@xenotime.net> Fix new kernel-doc warning in eth.c: Warning(net/ethernet/eth.c:237): No description found for parameter 'type' Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-13net: Push protocol type directly down to header_ops->cache()David S. Miller1-2/+1
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-12eth: fix new kernel-doc warningRandy Dunlap1-1/+1
Fix new kernel-doc warning (copy-paste typo): Warning(net/ethernet/eth.c:366): No description found for parameter 'rxqs' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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