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* | af_packet: mc_drop/flush_mclist changesEric Dumazet2009-10-20
| | | | | | | | | | | | | | We hold RTNL, we can use __dev_get_by_index() instead of dev_get_by_index() Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | af_packet: Avoid cache line dirtyingEric Dumazet2009-10-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While doing multiple captures, I found af_packet was dirtying cache line containing its prot_hook. This slow down machines where several cpus are necessary to handle capture traffic, as each prot_hook is traversed for each packet coming in or out the host. This patches moves "struct packet_type prot_hook" to the end of packet_sock, and uses a ____cacheline_aligned_in_smp to make sure this remains shared by all cpus. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: Generalize socket rx gap / receive queue overflow cmsgNeil Horman2009-10-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Create a new socket level option to report number of queue overflows Recently I augmented the AF_PACKET protocol to report the number of frames lost on the socket receive queue between any two enqueued frames. This value was exported via a SOL_PACKET level cmsg. AFter I completed that work it was requested that this feature be generalized so that any datagram oriented socket could make use of this option. As such I've created this patch, It creates a new SOL_SOCKET level option called SO_RXQ_OVFL, which when enabled exports a SOL_SOCKET level cmsg that reports the nubmer of times the sk_receive_queue overflowed between any two given frames. It also augments the AF_PACKET protocol to take advantage of this new feature (as it previously did not touch sk->sk_drops, which this patch uses to record the overflow count). Tested successfully by me. Notes: 1) Unlike my previous patch, this patch simply records the sk_drops value, which is not a number of drops between packets, but rather a total number of drops. Deltas must be computed in user space. 2) While this patch currently works with datagram oriented protocols, it will also be accepted by non-datagram oriented protocols. I'm not sure if thats agreeable to everyone, but my argument in favor of doing so is that, for those protocols which aren't applicable to this option, sk_drops will always be zero, and reporting no drops on a receive queue that isn't used for those non-participating protocols seems reasonable to me. This also saves us having to code in a per-protocol opt in mechanism. 3) This applies cleanly to net-next assuming that commit 977750076d98c7ff6cbda51858bb5a5894a9d9ab (my af packet cmsg patch) is reverted Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Revert "af_packet: add interframe drop cmsg (v6)"David S. Miller2009-10-12
| | | | | | | | | | | | | | | | This reverts commit 977750076d98c7ff6cbda51858bb5a5894a9d9ab. Neil is reimplementing this generically, outside of AF_PACKET. Signed-off-by: David S. Miller <davem@davemloft.net>
* | net: mark net_proto_ops as constStephen Hemminger2009-10-07
| | | | | | | | | | | | | | All usages of structure net_proto_ops should be declared const. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Use sk_mark for routing lookup in more placesEric Dumazet2009-10-07
| | | | | | | | | | | | | | | | | | | | | | | | Here is a followup on this area, thanks. [RFC] af_packet: fill skb->mark at xmit skb->mark may be used by classifiers, so fill it in case user set a SO_MARK option on socket. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | af_packet: add interframe drop cmsg (v6)Neil Horman2009-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add Ancilliary data to better represent loss information I've had a few requests recently to provide more detail regarding frame loss during an AF_PACKET packet capture session. Specifically the requestors want to see where in a packet sequence frames were lost, i.e. they want to see that 40 frames were lost between frames 302 and 303 in a packet capture file. In order to do this we need: 1) The kernel to export this data to user space 2) The applications to make use of it This patch addresses item (1). It does this by doing the following: A) Anytime we drop a frame for which we would increment po->stats.tp_drops, we also no increment a stats called po->stats.tp_gap. B) Every time we successfully enqueue a frame to sk_receive_queue, we record the value of po->stats.tp_gap in skb->mark. skb->cb would nominally be the place to record this, but since all the space there is used up, we're overloading skb->mark. Its safe to do since any enqueued packet is guaranteed to be unshared at this point, and skb->mark isn't used for anything else in the rx path to the application. After we record tp_gap in the skb, we zero po->stats.tp_gap. This allows us to keep a counter of the number of frames lost between any two enqueued packets C) When the application goes to dequeue a frame from the packet socket, we look at skb->mark for that frame. If it is non-zero, we add a cmsg chunk to the msghdr of level SOL_PACKET and type PACKET_GAPDATA. Its a 32 bit integer that represents the number of frames lost between this packet and the last previous frame received. Note there is a chance that if there is frame loss after a receive, and then the socket is closed, some gap data might be lost. This is covered by the use of the PACKET_AUXDATA socket option, which gives total loss data. With a bit of math, the final gap can be determined that way. I've tested this patch myself, and it works well. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> include/linux/if_packet.h | 2 ++ net/packet/af_packet.c | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 35 insertions(+) Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2009-09-30
|\| | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: ax25: Fix possible oops in ax25_make_new net: restore tx timestamping for accelerated vlans Phonet: fix mutex imbalance sit: fix off-by-one in ipip6_tunnel_get_prl net: Fix sock_wfree() race net: Make setsockopt() optlen be unsigned.
| * net: Make setsockopt() optlen be unsigned.David S. Miller2009-09-30
| | | | | | | | | | | | | | | | | | | | | | | | This provides safety against negative optlen at the type level instead of depending upon (sometimes non-trivial) checks against this sprinkled all over the the place, in each and every implementation. Based upon work done by Arjan van de Ven and feedback from Linus Torvalds. Signed-off-by: David S. Miller <davem@davemloft.net>
* | const: mark struct vm_struct_operationsAlexey Dobriyan2009-09-27
|/ | | | | | | | | | | * mark struct vm_area_struct::vm_ops as const * mark vm_ops in AGP code But leave TTM code alone, something is fishy there with global vm_ops being used. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* af_packet: style cleanupsEric Dumazet2009-07-23
| | | | | | | Some style cleanups to match current code practices. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: correct off-by-one write allocations reportsEric Dumazet2009-06-18
| | | | | | | | | | | | | commit 2b85a34e911bf483c27cfdd124aeb1605145dc80 (net: No more expensive sock_hold()/sock_put() on each tx) changed initial sk_wmem_alloc value. We need to take into account this offset when reporting sk_wmem_alloc to user, in PROC_FS files or various ioctls (SIOCOUTQ/TIOCOUTQ) Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: skb->dst accessorsEric Dumazet2009-06-03
| | | | | | | | | | | | | | | | | | Define three accessors to get/set dst attached to a skb struct dst_entry *skb_dst(const struct sk_buff *skb) void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst) void skb_dst_drop(struct sk_buff *skb) This one should replace occurrences of : dst_release(skb->dst) skb->dst = NULL; Delete skb->dst field Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: convert unicast addr listJiri Pirko2009-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts unicast address list to standard list_head using previously introduced struct netdev_hw_addr. It also relaxes the locking. Original spinlock (still used for multicast addresses) is not needed and is no longer used for a protection of this list. All reading and writing takes place under rtnl (with no changes). I also removed a possibility to specify the length of the address while adding or deleting unicast address. It's always dev->addr_len. The convertion touched especially e1000 and ixgbe codes when the change is not so trivial. Signed-off-by: Jiri Pirko <jpirko@redhat.com> drivers/net/bnx2.c | 13 +-- drivers/net/e1000/e1000_main.c | 24 +++-- drivers/net/ixgbe/ixgbe_common.c | 14 ++-- drivers/net/ixgbe/ixgbe_common.h | 4 +- drivers/net/ixgbe/ixgbe_main.c | 6 +- drivers/net/ixgbe/ixgbe_type.h | 4 +- drivers/net/macvlan.c | 11 +- drivers/net/mv643xx_eth.c | 11 +- drivers/net/niu.c | 7 +- drivers/net/virtio_net.c | 7 +- drivers/s390/net/qeth_l2_main.c | 6 +- drivers/scsi/fcoe/fcoe.c | 16 ++-- include/linux/netdevice.h | 18 ++-- net/8021q/vlan.c | 4 +- net/8021q/vlan_dev.c | 10 +- net/core/dev.c | 195 +++++++++++++++++++++++++++----------- net/dsa/slave.c | 10 +- net/packet/af_packet.c | 4 +- 18 files changed, 227 insertions(+), 137 deletions(-) Signed-off-by: David S. Miller <davem@davemloft.net>
* af_packet: Teach to listen for multiple unicast addresses.Eric W. Biederman2009-05-21
| | | | | | | | | | | | | | | | The the PACKET_ADD_MEMBERSHIP and the PACKET_DROP_MEMBERSHIP setsockopt calls for af_packet already has all of the infrastructure needed to subscribe to multiple mac addresses. All that is missing is a flag to say that the address we want to listen on is a unicast address. So introduce PACKET_MR_UNICAST and wire it up to dev_unicast_add and dev_unicast_delete. Additionally I noticed that errors from dev_mc_add were not propagated from packet_dev_mc so fix that. Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: TX_RING and packet mmapJohann Baudy2009-05-19
| | | | | | | | | | | | | | New packet socket feature that makes packet socket more efficient for transmission. - It reduces number of system call through a PACKET_TX_RING mechanism, based on PACKET_RX_RING (Circular buffer allocated in kernel space which is mmapped from user space). - It minimizes CPU copy using fragmented SKB (almost zero copy). Signed-off-by: Johann Baudy <johann.baudy@gnu-log.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* packet: avoid warnings when high-order page allocation failsEric Dumazet2009-04-15
| | | | | | | | | | | | | | | | | | | | | | | Latest tcpdump/libpcap triggers annoying messages because of high order page allocation failures (when lowmem exhausted or fragmented) These allocation errors are correctly handled so could be silent. [22660.208901] tcpdump: page allocation failure. order:5, mode:0xc0d0 [22660.208921] Pid: 13866, comm: tcpdump Not tainted 2.6.30-rc2 #170 [22660.208936] Call Trace: [22660.208950] [<c04e2b46>] ? printk+0x18/0x1a [22660.208965] [<c02760f7>] __alloc_pages_internal+0x357/0x460 [22660.208980] [<c0276251>] __get_free_pages+0x21/0x40 [22660.208995] [<c04cc835>] packet_set_ring+0x105/0x3d0 [22660.209009] [<c04ccd1d>] packet_setsockopt+0x21d/0x4d0 [22660.209025] [<c0270400>] ? filemap_fault+0x0/0x450 [22660.209040] [<c0449e34>] sys_setsockopt+0x54/0xa0 [22660.209053] [<c044b97f>] sys_socketcall+0xef/0x270 [22660.209067] [<c0202e34>] sysenter_do_call+0x12/0x26 Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Network Drop Monitor: Adding kfree_skb_clean for non-drops and modifying ↵Neil Horman2009-03-13
| | | | | | | | | | | | | | | end-of-line points for skbs Signed-off-by: Neil Horman <nhorman@tuxdriver.com> include/linux/skbuff.h | 4 +++- net/core/datagram.c | 2 +- net/core/skbuff.c | 22 ++++++++++++++++++++++ net/ipv4/arp.c | 2 +- net/ipv4/udp.c | 2 +- net/packet/af_packet.c | 2 +- 6 files changed, 29 insertions(+), 5 deletions(-) Signed-off-by: David S. Miller <davem@davemloft.net>
* packet: remove some pointless conditionals before kfree_skb()Wei Yongjun2009-02-27
| | | | | | | Remove some pointless conditionals before kfree_skb(). Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: packet socket packet_lookup_frame fixSebastiano Di Paola2009-02-01
| | | | | | | | | | | | packet_lookup_frames() fails to get user frame if current frame header status contains extra flags. This is due to the wrong assumption on the operators precedence during frame status tests. Fixed by forcing the right operators precedence order with explicit brackets. Signed-off-by: Paolo Abeni <paolo.abeni@gmail.com> Signed-off-by: Sebastiano Di Paola <sebastiano.dipaola@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* packet: Avoid lock_sock in mmap handlerHerbert Xu2009-01-30
| | | | | | | | | | | | | | As the mmap handler gets called under mmap_sem, and we may grab mmap_sem elsewhere under the socket lock to access user data, we should avoid grabbing the socket lock in the mmap handler. Since the only thing we care about in the mmap handler is for pg_vec* to be invariant, i.e., to exclude packet_set_ring, we can achieve this by simply using a new mutex. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Tested-by: Martin MOKREJŠ <mmokrejs@ribosome.natur.cuni.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: Make sure BHs are disabled in sock_prot_inuse_add()Eric Dumazet2008-11-24
| | | | | | | | | | | | | The rule of calling sock_prot_inuse_add() is that BHs must be disabled. Some new calls were added where this was not true and this tiggers warnings as reported by Ilpo. Fix this by adding explicit BH disabling around those call sites, or moving sock_prot_inuse_add() call inside an existing BH disabled section. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: af_packet should update its inuse counterEric Dumazet2008-11-19
| | | | | | | | | | | This patch is a preparation to namespace conversion of /proc/net/protocols In order to have relevant information for PACKET protocols, we should use sock_prot_inuse_add() to update a (percpu and pernamespace) counter of inuse sockets. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: convert BUG_TRAP to generic WARN_ONIlpo Järvinen2008-07-26
| | | | | | | | | | | | | | Removes legacy reinvent-the-wheel type thing. The generic machinery integrates much better to automated debugging aids such as kerneloops.org (and others), and is unambiguous due to better naming. Non-intuively BUG_TRAP() is actually equal to WARN_ON() rather than BUG_ON() though some might actually be promoted to BUG_ON() but I left that to future. I could make at least one BUILD_BUG_ON conversion. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns: Use net_eq() to compare net-namespaces for optimization.YOSHIFUJI Hideaki2008-07-20
| | | | | | | | Without CONFIG_NET_NS, namespace is always &init_net. Compiler will be able to omit namespace comparisons with this patch. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* packet: add PACKET_RESERVE sockoptPatrick McHardy2008-07-18
| | | | | | | | | Add new sockopt to reserve some headroom in the mmaped ring frames in front of the packet payload. This can be used f.i. when the VLAN header needs to be (re)constructed to avoid moving the entire payload. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* packet: deliver VLAN TCI to userspacePatrick McHardy2008-07-15
| | | | | | | | Store the VLAN tag in the auxillary data/tpacket2_hdr so userspace can properly deal with hardware VLAN tagging/stripping. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* packet: support extensible, 64 bit clean mmaped ring structurePatrick McHardy2008-07-15
| | | | | | | | | | | | | | | | | | | | | | | | | The tpacket_hdr is not 64 bit clean due to use of an unsigned long and can't be extended because the following struct sockaddr_ll needs to be at a fixed offset. Add support for a version 2 tpacket protocol that removes these limitations. Userspace can query the header size through a new getsockopt option and change the protocol version through a setsockopt option. The changes needed to switch to the new protocol version are: 1. replace struct tpacket_hdr by struct tpacket2_hdr 2. query header len and save 3. set protocol version to 2 - set up ring as usual 4. for getting the sockaddr_ll, use (void *)hdr + TPACKET_ALIGN(hdrlen) instead of (void *)hdr + TPACKET_ALIGN(sizeof(struct tpacket_hdr)) Steps 2 and 4 can be omitted if the struct sockaddr_ll isn't needed. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* af_packet: Check return of dev_set_promiscuity/allmultiWang Chen2008-07-14
| | | | | | | | | | | | | dev_set_promiscuity/allmulti might overflow. Commit: "netdevice: Fix promiscuity and allmulti overflow" in net-next makes dev_set_promiscuity/allmulti return error number if overflow happened. In af_packet, we check all positive increment for promiscuity and allmulti to get error return. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: remove CVS keywordsAdrian Bunk2008-06-12
| | | | | | | | This patch removes CVS keywords that weren't updated for a long time from comments. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: Allow netdevices to specify needed head/tailroomJohannes Berg2008-05-12
| | | | | | | | | | This patch adds needed_headroom/needed_tailroom members to struct net_device and updates many places that allocate sbks to use them. Not all of them can be converted though, and I'm sure I missed some (I mostly grepped for LL_RESERVED_SPACE) Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET] NETNS: Omit sock->sk_net without CONFIG_NET_NS.YOSHIFUJI Hideaki2008-03-25
| | | | | | | | | Introduce per-sock inlines: sock_net(), sock_net_set() and per-inet_timewait_sock inlines: twsk_net(), twsk_net_set(). Without CONFIG_NET_NS, no namespace other than &init_net exists. Let's explicitly define them to help compiler optimizations. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
* [NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS.YOSHIFUJI Hideaki2008-03-25
| | | | | | | | Introduce per-net_device inlines: dev_net(), dev_net_set(). Without CONFIG_NET_NS, no namespace other than &init_net exists. Let's explicitly define them to help compiler optimizations. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
* [AF_PACKET]: Remove unused variable.Jiri Olsa2008-03-24
| | | | | Signed-off-by: Jiri Olsa <olsajiri@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PACKET]: Fix sparse warnings in af_packet.cEric Dumazet2008-01-28
| | | | | | | | | CHECK net/packet/af_packet.c net/packet/af_packet.c:1876:14: warning: context imbalance in 'packet_seq_start' - wrong count at exit net/packet/af_packet.c:1888:13: warning: context imbalance in 'packet_seq_stop' - unexpected unlock Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PACKET]: Fix /proc/net/packet crash due to bogus private pointerHerbert Xu2008-01-28
| | | | | | | | | | The seq_open_net patch changed the meaning of seq->private. Unfortunately it missed two spots in AF_PACKET, which still used the old way of dereferencing seq->private, thus causing weird and wonderful crashes when reading /proc/net/packet. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETNS]: separate af_packet netns dataDenis V. Lunev2008-01-28
| | | | | Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Consolidate net namespace related proc files creation.Denis V. Lunev2008-01-28
| | | | | | Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make AF_PACKET handle multiple network namespacesDenis V. Lunev2008-01-28
| | | | | | | | | | | | | | This is done by making packet_sklist_lock and packet_sklist per network namespace and adding an additional filter condition on received packets to ensure they came from the proper network namespace. Changes from v1: - prohibit to call inet_dgram_ops.ioctl in other than init_net Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [AF_PACKET]: Fix minor code duplicationUrs Thuermann2007-11-13
| | | | | | | | Simplify some code by eliminating duplicate if-else clauses in packet_do_bind(). Signed-off-by: Urs Thuermann <urs@isnogud.escape.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [AF_PACKET]: Allow multicast traffic to be caught by ORIGDEV when bondedPeter P Waskiewicz Jr2007-11-11
| | | | | | | | | | The socket option for packet sockets to return the original ifindex instead of the bonded ifindex will not match multicast traffic. Since this socket option is the most useful for layer 2 traffic and multicast traffic, make the option multicast-aware. Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PACKET]: Use existing sock refcnt debugging infrastructurePavel Emelyanov2007-11-11
| | | | | | | | | | | | The packet_socks_nr variable is used purely for debugging the number of sockets. As Arnaldo pointed out, there's already an infrastructure for this purposes, so switch to using it. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Forget the zero_it argument of sk_alloc()Pavel Emelyanov2007-11-01
| | | | | | | | | | | | | | | Finally, the zero_it argument can be completely removed from the callers and from the function prototype. Besides, fix the checkpatch.pl warnings about using the assignments inside if-s. This patch is rather big, and it is a part of the previous one. I splitted it wishing to make the patches more readable. Hope this particular split helped. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PACKET]: Kill unused pg_vec_endpage() functionPatrick McHardy2007-10-19
| | | | | | | | The conversion to vm_insert_page() left this unused function behind, remove it. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Move hardware header operations out of netdevice.Stephen Hemminger2007-10-10
| | | | | | | | | Since hardware header operations are part of the protocol class not the device instance, make them into a separate object and save memory. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Wrap hard_header_parseStephen Hemminger2007-10-10
| | | | | | | | Wrap the hard_header_parse function to simplify next step of header_ops conversion. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Wrap netdevice hardware header creation.Stephen Hemminger2007-10-10
| | | | | | | | | | Add inline for common usage of hardware header creation, and fix bug in IPV6 mcast where the assumption about negative return is an errno. Negative return from hard_header means not enough space was available,(ie -N bytes). Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make the device list and device lookups per namespace.Eric W. Biederman2007-10-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes most of the generic device layer network namespace safe. This patch makes dev_base_head a network namespace variable, and then it picks up a few associated variables. The functions: dev_getbyhwaddr dev_getfirsthwbytype dev_get_by_flags dev_get_by_name __dev_get_by_name dev_get_by_index __dev_get_by_index dev_ioctl dev_ethtool dev_load wireless_process_ioctl were modified to take a network namespace argument, and deal with it. vlan_ioctl_set and brioctl_set were modified so their hooks will receive a network namespace argument. So basically anthing in the core of the network stack that was affected to by the change of dev_base was modified to handle multiple network namespaces. The rest of the network stack was simply modified to explicitly use &init_net the initial network namespace. This can be fixed when those components of the network stack are modified to handle multiple network namespaces. For now the ifindex generator is left global. Fundametally ifindex numbers are per namespace, or else we will have corner case problems with migration when we get that far. At the same time there are assumptions in the network stack that the ifindex of a network device won't change. Making the ifindex number global seems a good compromise until the network stack can cope with ifindex changes when you change namespaces, and the like. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make device event notification network namespace safeEric W. Biederman2007-10-10
| | | | | | | | | | | | | | | | | | Every user of the network device notifiers is either a protocol stack or a pseudo device. If a protocol stack that does not have support for multiple network namespaces receives an event for a device that is not in the initial network namespace it quite possibly can get confused and do the wrong thing. To avoid problems until all of the protocol stacks are converted this patch modifies all netdev event handlers to ignore events on devices that are not in the initial network namespace. As the rest of the code is made network namespace aware these checks can be removed. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make packet reception network namespace safeEric W. Biederman2007-10-10
| | | | | | | | | | | | | | This patch modifies every packet receive function registered with dev_add_pack() to drop packets if they are not from the initial network namespace. This should ensure that the various network stacks do not receive packets in a anything but the initial network namespace until the code has been converted and is ready for them. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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