feb91a02ccb09661507f170b2a444aec94f307f9 |
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05-Nov-2014 |
Daniel Borkmann <dborkman@redhat.com> |
ipv6: mld: fix add_grhead skb_over_panic for devs with large MTUs It has been reported that generating an MLD listener report on devices with large MTUs (e.g. 9000) and a high number of IPv6 addresses can trigger a skb_over_panic(): skbuff: skb_over_panic: text:ffffffff80612a5d len:3776 put:20 head:ffff88046d751000 data:ffff88046d751010 tail:0xed0 end:0xec0 dev:port1 ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:100! invalid opcode: 0000 [#1] SMP Modules linked in: ixgbe(O) CPU: 3 PID: 0 Comm: swapper/3 Tainted: G O 3.14.23+ #4 [...] Call Trace: <IRQ> [<ffffffff80578226>] ? skb_put+0x3a/0x3b [<ffffffff80612a5d>] ? add_grhead+0x45/0x8e [<ffffffff80612e3a>] ? add_grec+0x394/0x3d4 [<ffffffff80613222>] ? mld_ifc_timer_expire+0x195/0x20d [<ffffffff8061308d>] ? mld_dad_timer_expire+0x45/0x45 [<ffffffff80255b5d>] ? call_timer_fn.isra.29+0x12/0x68 [<ffffffff80255d16>] ? run_timer_softirq+0x163/0x182 [<ffffffff80250e6f>] ? __do_softirq+0xe0/0x21d [<ffffffff8025112b>] ? irq_exit+0x4e/0xd3 [<ffffffff802214bb>] ? smp_apic_timer_interrupt+0x3b/0x46 [<ffffffff8063f10a>] ? apic_timer_interrupt+0x6a/0x70 mld_newpack() skb allocations are usually requested with dev->mtu in size, since commit 72e09ad107e7 ("ipv6: avoid high order allocations") we have changed the limit in order to be less likely to fail. However, in MLD/IGMP code, we have some rather ugly AVAILABLE(skb) macros, which determine if we may end up doing an skb_put() for adding another record. To avoid possible fragmentation, we check the skb's tailroom as skb->dev->mtu - skb->len, which is a wrong assumption as the actual max allocation size can be much smaller. The IGMP case doesn't have this issue as commit 57e1ab6eaddc ("igmp: refine skb allocations") stores the allocation size in the cb[]. Set a reserved_tailroom to make it fit into the MTU and use skb_availroom() helper instead. This also allows to get rid of igmp_skb_size(). Reported-by: Wei Liu <lw1a2.jing@gmail.com> Fixes: 72e09ad107e7 ("ipv6: avoid high order allocations") Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Hannes Frederic Sowa <hannes@stressinduktion.org> Cc: David L Stevens <david.stevens@oracle.com> Acked-by: Eric Dumazet <edumazet@google.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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b47bd8d2795412143a23d2961033c126ce6914d9 |
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05-Oct-2014 |
Daniel Borkmann <dborkman@redhat.com> |
ipv4: igmp: fix v3 general query drop monitor false positive In case we find a general query with non-zero number of sources, we are dropping the skb as it's malformed. RFC3376, section 4.1.8. Number of Sources (N): This number is zero in a General Query or a Group-Specific Query, and non-zero in a Group-and-Source-Specific Query. Therefore, reflect that by using kfree_skb() instead of consume_skb(). Fixes: d679c5324d9a ("igmp: avoid drop_monitor false positives") Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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a9fe8e29945d56f35235a3a0fba99b4cf181d211 |
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02-Sep-2014 |
Hannes Frederic Sowa <hannes@stressinduktion.org> |
ipv4: implement igmp_qrv sysctl to tune igmp robustness variable As in IPv6 people might increase the igmp query robustness variable to make sure unsolicited state change reports aren't lost on the network. Add and document this new knob to igmp code. RFCs allow tuning this parameter back to first IGMP RFC, so we also use this setting for all counters, including source specific multicast. Also take over sysctl value when upping the interface and don't reuse the last one seen on the interface. Cc: Flavio Leitner <fbl@redhat.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by: Flavio Leitner <fbl@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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e6b688838e25b22e10dd273b48581cb2f62ec16e |
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17-Aug-2014 |
Andreea-Cristina Bernat <bernat.ada@gmail.com> |
net/ipv4/igmp.c: Replace rcu_dereference() with rcu_access_pointer() The "rcu_dereference()" call is used directly in a condition. Since its return value is never dereferenced it is recommended to use "rcu_access_pointer()" instead of "rcu_dereference()". Therefore, this patch makes the replacement. The following Coccinelle semantic patch was used: @@ @@ ( if( (<+... - rcu_dereference + rcu_access_pointer (...) ...+>)) {...} | while( (<+... - rcu_dereference + rcu_access_pointer (...) ...+>)) {...} ) Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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179542a548f37e1366f7afb7a088c965a2adf7d0 |
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24-Jul-2014 |
Himangi Saraogi <himangi774@gmail.com> |
igmp: remove exceptional & on function name In this file, function names are otherwise used as pointers without &. A simplified version of the Coccinelle semantic patch that makes this change is as follows: // <smpl> @r@ identifier f; @@ f(...) { ... } @@ identifier r.f; @@ - &f + f // </smpl> Signed-off-by: Himangi Saraogi <himangi774@gmail.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
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52ad353a5344f1f700c5b777175bdfa41d3cd65a |
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02-Jul-2014 |
dingtianhong <dingtianhong@huawei.com> |
igmp: fix the problem when mc leave group The problem was triggered by these steps: 1) create socket, bind and then setsockopt for add mc group. mreq.imr_multiaddr.s_addr = inet_addr("255.0.0.37"); mreq.imr_interface.s_addr = inet_addr("192.168.1.2"); setsockopt(sockfd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq)); 2) drop the mc group for this socket. mreq.imr_multiaddr.s_addr = inet_addr("255.0.0.37"); mreq.imr_interface.s_addr = inet_addr("0.0.0.0"); setsockopt(sockfd, IPPROTO_IP, IP_DROP_MEMBERSHIP, &mreq, sizeof(mreq)); 3) and then drop the socket, I found the mc group was still used by the dev: netstat -g Interface RefCnt Group --------------- ------ --------------------- eth2 1 255.0.0.37 Normally even though the IP_DROP_MEMBERSHIP return error, the mc group still need to be released for the netdev when drop the socket, but this process was broken when route default is NULL, the reason is that: The ip_mc_leave_group() will choose the in_dev by the imr_interface.s_addr, if input addr is NULL, the default route dev will be chosen, then the ifindex is got from the dev, then polling the inet->mc_list and return -ENODEV, but if the default route dev is NULL, the in_dev and ifIndex is both NULL, when polling the inet->mc_list, the mc group will be released from the mc_list, but the dev didn't dec the refcnt for this mc group, so when dropping the socket, the mc_list is NULL and the dev still keep this group. v1->v2: According Hideaki's suggestion, we should align with IPv6 (RFC3493) and BSDs, so I add the checking for the in_dev before polling the mc_list, make sure when we remove the mc group, dec the refcnt to the real dev which was using the mc address. The problem would never happened again. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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73f156a6e8c1074ac6327e0abd1169e95eb66463 |
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02-Jun-2014 |
Eric Dumazet <edumazet@google.com> |
inetpeer: get rid of ip_id_count Ideally, we would need to generate IP ID using a per destination IP generator. linux kernels used inet_peer cache for this purpose, but this had a huge cost on servers disabling MTU discovery. 1) each inet_peer struct consumes 192 bytes 2) inetpeer cache uses a binary tree of inet_peer structs, with a nominal size of ~66000 elements under load. 3) lookups in this tree are hitting a lot of cache lines, as tree depth is about 20. 4) If server deals with many tcp flows, we have a high probability of not finding the inet_peer, allocating a fresh one, inserting it in the tree with same initial ip_id_count, (cf secure_ip_id()) 5) We garbage collect inet_peer aggressively. IP ID generation do not have to be 'perfect' Goal is trying to avoid duplicates in a short period of time, so that reassembly units have a chance to complete reassembly of fragments belonging to one message before receiving other fragments with a recycled ID. We simply use an array of generators, and a Jenkin hash using the dst IP as a key. ipv6_select_ident() is put back into net/ipv6/ip6_output.c where it belongs (it is only used from this file) secure_ip_id() and secure_ipv6_id() no longer are needed. Rename ip_select_ident_more() to ip_select_ident_segs() to avoid unnecessary decrement/increment of the number of segments. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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de08dc1a8e7052f4cbaf920ce0af6bb261595705 |
|
08-May-2014 |
Tom Herbert <therbert@google.com> |
igmp: Call skb_checksum_simple_validate Use skb_checksum_simple_validate to verify checksum. Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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63862b5bef7349dd1137e4c70702c67d77565785 |
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11-Jan-2014 |
Aruna-Hewapathirane <aruna.hewapathirane@gmail.com> |
net: replace macros net_random and net_srandom with direct calls to prandom This patch removes the net_random and net_srandom macros and replaces them with direct calls to the prandom ones. As new commits only seem to use prandom_u32 there is no use to keep them around. This change makes it easier to grep for users of prandom_u32. Signed-off-by: Aruna-Hewapathirane <aruna.hewapathirane@gmail.com> Suggested-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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72c1d3bdd5bf10a789608336ba0d61f1e44e4350 |
|
11-Jan-2014 |
WANG Cong <xiyou.wangcong@gmail.com> |
ipv4: register igmp_notifier even when !CONFIG_PROC_FS We still need this notifier even when we don't config PROC_FS. It should be rare to have a kernel without PROC_FS, so just for completeness. Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: David S. Miller <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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c71151f05bf6da37a94861c9f181b0b6ff866e6a |
|
23-Dec-2013 |
Weilong Chen <chenweilong@huawei.com> |
ipv4: fix all space errors in file igmp.c Signed-off-by: Weilong Chen <chenweilong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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e2401654dd0f5f3fb7a8d80dad9554d73d7ca394 |
|
29-Sep-2013 |
Salam Noureddine <noureddine@aristanetworks.com> |
ipv4 igmp: use in_dev_put in timer handlers instead of __in_dev_put It is possible for the timer handlers to run after the call to ip_mc_down so use in_dev_put instead of __in_dev_put in the handler function in order to do proper cleanup when the refcnt reaches 0. Otherwise, the refcnt can reach zero without the in_device being destroyed and we end up leaking a reference to the net_device and see messages like the following, unregister_netdevice: waiting for eth0 to become free. Usage count = 1 Tested on linux-3.4.43. Signed-off-by: Salam Noureddine <noureddine@aristanetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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703133de331a7a7df47f31fb9de51dc6f68a9de8 |
|
19-Sep-2013 |
Ansis Atteka <aatteka@nicira.com> |
ip: generate unique IP identificator if local fragmentation is allowed If local fragmentation is allowed, then ip_select_ident() and ip_select_ident_more() need to generate unique IDs to ensure correct defragmentation on the peer. For example, if IPsec (tunnel mode) has to encrypt large skbs that have local_df bit set, then all IP fragments that belonged to different ESP datagrams would have used the same identificator. If one of these IP fragments would get lost or reordered, then peer could possibly stitch together wrong IP fragments that did not belong to the same datagram. This would lead to a packet loss or data corruption. Signed-off-by: Ansis Atteka <aatteka@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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2690048c01f32bf45d1c1e1ab3079bc10ad2aea7 |
|
06-Aug-2013 |
William Manley <william.manley@youview.com> |
net: igmp: Allow user-space configuration of igmp unsolicited report interval Adds the new procfs knobs: /proc/sys/net/ipv4/conf/*/igmpv2_unsolicited_report_interval /proc/sys/net/ipv4/conf/*/igmpv3_unsolicited_report_interval Which will allow userspace configuration of the IGMP unsolicited report interval (see below) in milliseconds. The defaults are 10000ms for IGMPv2 and 1000ms for IGMPv3 in accordance with RFC2236 and RFC3376. Background: If an IGMP join packet is lost you will not receive data sent to the multicast group so if no data arrives from that multicast group in a period of time after the IGMP join a second IGMP join will be sent. The delay between joins is the "IGMP Unsolicited Report Interval". Prior to this patch this value was hard coded in the kernel to 10s for IGMPv2 and 1s for IGMPv3. 10s is unsuitable for some use-cases, such as IPTV as it can cause channel change to be slow in the presence of packet loss. This patch allows the value to be overridden from userspace for both IGMPv2 and IGMPv3 such that it can be tuned accoding to the network. Tested with Wireshark and a simple program to join a (non-existent) multicast group. The distribution of timings for the second join differ based upon setting the procfs knobs. igmpvX_unsolicited_report_interval is intended to follow the pattern established by force_igmp_version, and while a procfs entry has been added a corresponding sysctl knob has not as it is my understanding that sysctl is deprecated[1]. [1]: http://lwn.net/Articles/247243/ Signed-off-by: William Manley <william.manley@youview.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by: Benjamin LaHaise <bcrl@kvack.org> Signed-off-by: David S. Miller <davem@davemloft.net>
|
cab70040dfd95ee32144f02fade64f0cb94f31a0 |
|
06-Aug-2013 |
William Manley <william.manley@youview.com> |
net: igmp: Reduce Unsolicited report interval to 1s when using IGMPv3 If an IGMP join packet is lost you will not receive data sent to the multicast group so if no data arrives from that multicast group in a period of time after the IGMP join a second IGMP join will be sent. The delay between joins is the "IGMP Unsolicited Report Interval". Previously this value was hard coded to be chosen randomly between 0-10s. This can be too long for some use-cases, such as IPTV as it can cause channel change to be slow in the presence of packet loss. The value 10s has come from IGMPv2 RFC2236, which was reduced to 1s in IGMPv3 RFC3376. This patch makes the kernel use the 1s value from the later RFC if we are operating in IGMPv3 mode. IGMPv2 behaviour is unaffected. Tested with Wireshark and a simple program to join a (non-existent) multicast group. The distribution of timings for the second join differ based upon setting /proc/sys/net/ipv4/conf/eth0/force_igmp_version. Signed-off-by: William Manley <william.manley@youview.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by: Benjamin LaHaise <bcrl@kvack.org> Signed-off-by: David S. Miller <davem@davemloft.net>
|
9d4a0314642918cbda9ed4012df51e8df608fce6 |
|
26-Jul-2013 |
Hannes Frederic Sowa <hannes@stressinduktion.org> |
ipv4, ipv6: send igmpv3/mld packets with TC_PRIO_CONTROL v2: a) Also send ipv4 igmp messages with TC_PRIO_CONTROL Cc: William Manley <william.manley@youview.com> Cc: Lukas Tribus <luky-37@hotmail.com> Acked-by: Benjamin LaHaise <bcrl@kvack.org> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
|
4aa5dee4d9997879adff858514844efab5a15a01 |
|
20-Jul-2013 |
Jiri Pirko <jiri@resnulli.us> |
net: convert resend IGMP to notifier event Until now, bond_resend_igmp_join_requests() looks for vlans attached to bonding device, bridge where bonding act as port manually. It does not care of other scenarios, like stacked bonds or team device above. Make this more generic and use netdev notifier to propagate the event to upper devices and to actually call ip_mc_rejoin_groups(). Signed-off-by: Jiri Pirko <jiri@resnulli.us> Acked-by: Veaceslav Falico <vfalico@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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c70eba74532a9b54583689fead6e2e8f3a86e1c5 |
|
12-Jun-2013 |
Eric Dumazet <edumazet@google.com> |
igmp: fix new sparse errors Fix following sparse errors : net/ipv4/igmp.c:1222:25: warning: cast from restricted __be32 net/ipv4/igmp.c:1234:31: warning: incorrect type in assignment (different address spaces) net/ipv4/igmp.c:1234:31: expected struct ip_mc_list [noderef] <asn:4>*next_hash net/ipv4/igmp.c:1234:31: got struct ip_mc_list *<noident> net/ipv4/igmp.c:1250:31: warning: incorrect type in assignment (different address spaces) net/ipv4/igmp.c:1250:31: expected struct ip_mc_list [noderef] <asn:4>*next_hash net/ipv4/igmp.c:1250:31: got struct ip_mc_list *<noident> net/ipv4/igmp.c:2380:37: warning: cast from restricted __be32 These were added by commit e9897071350bd9 ("igmp: hash a hash table to speedup ip_check_mc_rcu()") Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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946d3bd7231be3b6202759ea0bea59989ae28c4a |
|
07-Jun-2013 |
Shawn Bohrer <sbohrer@rgmadvisors.com> |
igmp: remove unnecessary in_device member zeroing ip_mc_init_dev() is passed a freshly kzalloc'd in_device so it is unnecessary to explicitly zero out the members. Signed-off-by: Shawn Bohrer <sbohrer@rgmadvisors.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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e9897071350bd9d94a56b5b6f79c85b1a98fc7e7 |
|
07-Jun-2013 |
Eric Dumazet <edumazet@google.com> |
igmp: hash a hash table to speedup ip_check_mc_rcu() After IP route cache removal, multicast applications using a lot of multicast addresses hit a O(N) behavior in ip_check_mc_rcu() Add a per in_device hash table to get faster lookup. This hash table is created only if the number of items in mc_list is above 4. Reported-by: Shawn Bohrer <sbohrer@rgmadvisors.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Tested-by: Shawn Bohrer <sbohrer@rgmadvisors.com> Reviewed-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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f7c0c2ae843b74f8dba55820cb0a3de19c976703 |
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28-May-2013 |
Simon Horman <horms@verge.net.au> |
ipv4: Correct comparisons and calculations using skb->tail and skb-transport_header This corrects an regression introduced by "net: Use 16bits for *_headers fields of struct skbuff" when NET_SKBUFF_DATA_USES_OFFSET is not set. In that case skb->tail will be a pointer whereas skb->transport_header will be an offset from head. This is corrected by using wrappers that ensure that comparisons and calculations are always made using pointers. Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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ece31ffd539e8e2b586b1ca5f50bc4f4591e3893 |
|
18-Feb-2013 |
Gao feng <gaofeng@cn.fujitsu.com> |
net: proc: change proc_net_remove to remove_proc_entry proc_net_remove is only used to remove proc entries that under /proc/net,it's not a general function for removing proc entries of netns. if we want to remove some proc entries which under /proc/net/stat/, we still need to call remove_proc_entry. this patch use remove_proc_entry to replace proc_net_remove. we can remove proc_net_remove after this patch. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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d4beaa66add8aebf83ab16d2fde4e4de8dac36df |
|
18-Feb-2013 |
Gao feng <gaofeng@cn.fujitsu.com> |
net: proc: change proc_net_fops_create to proc_create Right now, some modules such as bonding use proc_create to create proc entries under /proc/net/, and other modules such as ipv4 use proc_net_fops_create. It looks a little chaos.this patch changes all of proc_net_fops_create to proc_create. we can remove proc_net_fops_create after this patch. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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193ba924524e6afe192217982b2c2d67e4715d33 |
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01-Oct-2012 |
stephen hemminger <shemminger@vyatta.com> |
igmp: export symbol ip_mc_leave_group Needed for VXLAN. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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d679c5324d9a87c6295f56c2dea52d5f68834f41 |
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06-Sep-2012 |
Eric Dumazet <edumazet@google.com> |
igmp: avoid drop_monitor false positives igmp should call consume_skb() for all correctly processed packets, to avoid false dropwatch/drop_monitor false positives. Reported-by: Shawn Bohrer <sbohrer@rgmadvisors.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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a399a8053164ec8bcb06fed52be9941a26ecde11 |
|
08-Aug-2012 |
Eric Dumazet <edumazet@google.com> |
time: jiffies_delta_to_clock_t() helper to the rescue Various /proc/net files sometimes report crazy timer values, expressed in clock_t units. This happens when an expired timer delta (expires - jiffies) is passed to jiffies_to_clock_t(). This function has an overflow in : return div_u64((u64)x * TICK_NSEC, NSEC_PER_SEC / USER_HZ); commit cbbc719fccdb8cb (time: Change jiffies_to_clock_t() argument type to unsigned long) only got around the problem. As we cant output negative values in /proc/net/tcp without breaking various tools, I suggest adding a jiffies_delta_to_clock_t() wrapper that caps the negative delta to a 0 value. Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Maciej Żenczykowski <maze@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: hank <pyu@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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5e73ea1a31c3612aa6dfe44f864ca5b7b6a4cff9 |
|
15-Apr-2012 |
Daniel Baluta <dbaluta@ixiacom.com> |
ipv4: fix checkpatch errors Fix checkpatch errors of the following type: * ERROR: "foo * bar" should be "foo *bar" * ERROR: "(foo*)" should be "(foo *)" Signed-off-by: Daniel Baluta <dbaluta@ixiacom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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ce713ee5a10f3a171df94b0d501034aab2388c16 |
|
05-Apr-2012 |
RongQing.Li <roy.qing.li@gmail.com> |
net: replace continue with break to reduce unnecessary loop in xxx_xmarksources The conditional which decides to skip inactive filters does not change with the change of loop index, so it is unnecessary to check them many times. Signed-off-by: RongQing.Li <roy.qing.li@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
9ffc93f203c18a70623f21950f1dd473c9ec48cd |
|
28-Mar-2012 |
David Howells <dhowells@redhat.com> |
Remove all #inclusions of asm/system.h 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>
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cf778b00e96df6d64f8e21b8395d1f8a859ecdc7 |
|
12-Jan-2012 |
Eric Dumazet <eric.dumazet@gmail.com> |
net: reintroduce missing rcu_assign_pointer() calls commit a9b3cd7f32 (rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER) did a lot of incorrect changes, since it did a complete conversion of rcu_assign_pointer(x, y) to RCU_INIT_POINTER(x, y). We miss needed barriers, even on x86, when y is not NULL. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Stephen Hemminger <shemminger@vyatta.com> CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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a8c1f65c79cbbb2f7da782d4c9d15639a9b94b27 |
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09-Jan-2012 |
Ben Hutchings <ben@decadent.org.uk> |
igmp: Avoid zero delay when receiving odd mixture of IGMP queries Commit 5b7c84066733c5dfb0e4016d939757b38de189e4 ('ipv4: correct IGMP behavior on v3 query during v2-compatibility mode') added yet another case for query parsing, which can result in max_delay = 0. Substitute a value of 1, as in the usual v3 case. Reported-by: Simon McVittie <smcv@debian.org> References: http://bugs.debian.org/654876 Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
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5eb81e89164a5cea31dbc2df37a33588d4466352 |
|
30-Nov-2011 |
Jun Zhao <mypopydev@gmail.com> |
ipv4 : igmp : Delete useless parameter in ip_mc_add1_src() Need not to used 'delta' flag when add single-source to interface filter source list. Signed-off-by: Jun Zhao <mypopydev@gmail.com> Signed-off-by: David S. Miller <davem@drr.davemloft.net>
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685f94e6db8496399c881218018166515445a914 |
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22-Nov-2011 |
Jun Zhao <mypopydev@gmail.com> |
ipv4 : igmp : fix error handle in ip_mc_add_src() When add sources to interface failure, need to roll back the sfcount[MODE] to before state. We need to match it corresponding. Acked-by: David L Stevens <dlstevens@us.ibm.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Jun Zhao <mypopydev@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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660882432909dbe611f1792eda158188065cb9f1 |
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18-Nov-2011 |
Herbert Xu <herbert@gondor.apana.org.au> |
ipv4: Remove all uses of LL_ALLOCATED_SPACE ipv4: Remove all uses of LL_ALLOCATED_SPACE The macro LL_ALLOCATED_SPACE was ill-conceived. It applies the alignment to the sum of needed_headroom and needed_tailroom. As the amount that is then reserved for head room is needed_headroom with alignment, this means that the tail room left may be too small. This patch replaces all uses of LL_ALLOCATED_SPACE in net/ipv4 with the macro LL_RESERVED_SPACE and direct reference to needed_tailroom. This also fixes the problem with needed_headroom changing between allocating the skb and reserving the head room. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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e05c4ad3ed874ee4f5e2c969e55d318ec654332c |
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24-Aug-2011 |
Yan, Zheng <zheng.z.yan@intel.com> |
mcast: Fix source address selection for multicast listener report Should check use count of include mode filter instead of total number of include mode filters. Signed-off-by: Zheng Yan <zheng.z.yan@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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b81693d9149c598302e8eb9c20cb20330d922c8e |
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16-Aug-2011 |
Jiri Pirko <jpirko@redhat.com> |
net: remove ndo_set_multicast_list callback Remove no longer used operation. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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a9b3cd7f323b2e57593e7215362a7b02fc933e3a |
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01-Aug-2011 |
Stephen Hemminger <shemminger@vyatta.com> |
rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER When assigning a NULL value to an RCU protected pointer, no barrier is needed. The rcu_assign_pointer, used to handle that but will soon change to not handle the special case. Convert all rcu_assign_pointer of NULL value. //smpl @@ expression P; @@ - rcu_assign_pointer(P, NULL) + RCU_INIT_POINTER(P, NULL) // </smpl> Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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a1889c0d2039a53ae04abb9f20c62500bd312bf3 |
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28-Jul-2011 |
Julia Lawall <julia@diku.dk> |
net: adjust array index Convert array index from the loop bound to the loop index. A simplified version of the semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression e1,e2,ar; @@ for(e1 = 0; e1 < e2; e1++) { <... ar[ - e2 + e1 ] ...> } // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
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24cf3af3fed5edcf90bc2a0ed181e6ce1513d2dc |
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24-May-2011 |
Veaceslav Falico <vfalico@redhat.com> |
igmp: call ip_mc_clear_src() only when we have no users of ip_mc_list In igmp_group_dropped() we call ip_mc_clear_src(), which resets the number of source filters per mulitcast. However, igmp_group_dropped() is also called on NETDEV_DOWN, NETDEV_PRE_TYPE_CHANGE and NETDEV_UNREGISTER, which means that the group might get added back on NETDEV_UP, NETDEV_REGISTER and NETDEV_POST_TYPE_CHANGE respectively, leaving us with broken source filters. To fix that, we must clear the source filters only when there are no users in the ip_mc_list, i.e. in ip_mc_dec_group() and on device destroy. Acked-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: Veaceslav Falico <vfalico@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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10d50e748d983ff1003e0cf556ea17fa8f32c382 |
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18-Mar-2011 |
Lai Jiangshan <laijs@cn.fujitsu.com> |
net,rcu: convert call_rcu(ip_mc_socklist_reclaim) to kfree_rcu() The rcu callback ip_mc_socklist_reclaim() just calls a kfree(), so we use kfree_rcu() instead of the call_rcu(ip_mc_socklist_reclaim). Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
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7519cce48fb0a314dac473bdfba203b787435857 |
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18-Mar-2011 |
Lai Jiangshan <laijs@cn.fujitsu.com> |
net,rcu: convert call_rcu(ip_sf_socklist_reclaim) to kfree_rcu() The rcu callback ip_sf_socklist_reclaim() just calls a kfree(), so we use kfree_rcu() instead of the call_rcu(ip_sf_socklist_reclaim). Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
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42ea299d3f1941f8c3dbc1fe031d682f8ad45005 |
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18-Mar-2011 |
Lai Jiangshan <laijs@cn.fujitsu.com> |
net,rcu: convert call_rcu(ip_mc_list_reclaim) to kfree_rcu() The rcu callback ip_mc_list_reclaim() just calls a kfree(), so we use kfree_rcu() instead of the call_rcu(ip_mc_list_reclaim). Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
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492f64ce12e259abd85714d05b885e105bd8aeef |
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04-May-2011 |
David S. Miller <davem@davemloft.net> |
ipv4: Use flowi4's {saddr,daddr} in igmpv3_newpack() and igmp_send_report() Instead of rt->rt_{src,dst} Signed-off-by: David S. Miller <davem@davemloft.net>
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31e4543db29fb85496a122b965d6482c8d1a2bfe |
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04-May-2011 |
David S. Miller <davem@davemloft.net> |
ipv4: Make caller provide on-stack flow key to ip_route_output_ports(). Signed-off-by: David S. Miller <davem@davemloft.net>
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2e97e980b5653c23d01c911af6a0ab2d3431d7f1 |
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26-Apr-2011 |
David S. Miller <davem@davemloft.net> |
ipv4: Remove erroneous check in igmpv3_newpack() and igmp_send_report(). Output route resolution never returns a route with rt_src set to zero (which is INADDR_ANY). Even if the flow key for the output route lookup specifies INADDR_ANY for the source address, the output route resolution chooses a real source address to use in the final route. This test has existed forever in igmp_send_report() and David Stevens simply copied over the erroneous test when implementing support for IGMPv3. Signed-off-by: David S. Miller <davem@davemloft.net> Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com>
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78fbfd8a653ca972afe479517a40661bfff6d8c3 |
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12-Mar-2011 |
David S. Miller <davem@davemloft.net> |
ipv4: Create and use route lookup helpers. The idea here is this minimizes the number of places one has to edit in order to make changes to how flows are defined and used. Signed-off-by: David S. Miller <davem@davemloft.net>
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dbdd9a52e38a4a93adfa4d0278801cce4fad98eb |
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11-Mar-2011 |
David S. Miller <davem@davemloft.net> |
ipv4: Remove redundant RCU locking in ip_check_mc(). All callers are under rcu_read_lock() protection already. Rename to ip_check_mc_rcu() to make it even more clear. Signed-off-by: David S. Miller <davem@davemloft.net>
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b23dd4fe42b455af5c6e20966b7d6959fa8352ea |
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02-Mar-2011 |
David S. Miller <davem@davemloft.net> |
ipv4: Make output route lookup return rtable directly. Instead of on the stack. Signed-off-by: David S. Miller <davem@davemloft.net>
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57e1ab6eaddc9f2c358cd4afb497cda6e3c6821a |
|
16-Nov-2010 |
Eric Dumazet <eric.dumazet@gmail.com> |
igmp: refine skb allocations IGMP allocates MTU sized skbs. This may fail for large MTU (order-2 allocations), so add a fallback to try lower sizes. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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866f3b25a2eb60d7529c227a0ecd80c3aba443fd |
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18-Nov-2010 |
Eric Dumazet <eric.dumazet@gmail.com> |
bonding: IGMP handling cleanup Instead of iterating in_dev->mc_list from bonding driver, its better to call a helper function provided by igmp.c Details of implementation (locking) are private to igmp code. ip_mc_rejoin_group(struct ip_mc_list *im) becomes ip_mc_rejoin_groups(struct in_device *in_dev); Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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5811662b15db018c740c57d037523683fd3e6123 |
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12-Nov-2010 |
Changli Gao <xiaosuo@gmail.com> |
net: use the macros defined for the members of flowi Use the macros defined for the members of flowi to clean the code up. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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d9aa93804e53f2153260568024b75ad3d81784f9 |
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15-Nov-2010 |
David S. Miller <davem@davemloft.net> |
ipv4: Fix build with multicast disabled. net/ipv4/igmp.c: In function 'ip_mc_inc_group': net/ipv4/igmp.c:1228: error: implicit declaration of function 'for_each_pmc_rtnl' net/ipv4/igmp.c:1228: error: expected ';' before '{' token net/ipv4/igmp.c: In function 'ip_mc_unmap': net/ipv4/igmp.c:1333: error: expected ';' before 'igmp_group_dropped' ... Move for_each_pmc_rcu and for_each_pmc_rtnl macro definitions outside of multicast ifdef protection. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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1d7138de878d1d4210727c1200193e69596f93b3 |
|
12-Nov-2010 |
Eric Dumazet <eric.dumazet@gmail.com> |
igmp: RCU conversion of in_dev->mc_list in_dev->mc_list is protected by one rwlock (in_dev->mc_list_lock). This can easily be converted to a RCU protection. Writers hold RTNL, so mc_list_lock is removed, not replaced by a spinlock. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Cypher Wu <cypher.w@gmail.com> Cc: Américo Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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c753796769e4fb0cd813b6e5801b3c01f4681d4f |
|
12-Nov-2010 |
David S. Miller <davem@davemloft.net> |
ipv4: Make rt->fl.iif tests lest obscure. When we test rt->fl.iif against zero, we're seeing if it's an output or an input route. Make that explicit with some helper functions. Signed-off-by: David S. Miller <davem@davemloft.net>
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18943d292facbc70e6a36fc62399ae833f64671b |
|
08-Nov-2010 |
Eric Dumazet <eric.dumazet@gmail.com> |
inet: fix ip_mc_drop_socket() commit 8723e1b4ad9be4444 (inet: RCU changes in inetdev_by_index()) forgot one call site in ip_mc_drop_socket() We should not decrease idev refcount after inetdev_by_index() call, since refcount is not increased anymore. Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de> Reported-by: Miles Lane <miles.lane@gmail.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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8723e1b4ad9be4444423b4d41509ce859a629649 |
|
19-Oct-2010 |
Eric Dumazet <eric.dumazet@gmail.com> |
inet: RCU changes in inetdev_by_index() Convert inetdev_by_index() to not increment in_dev refcount. Callers hold RCU or RTNL, and should not decrement in_dev refcount. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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9e917dca74138cccf398ce8bb924c7fd2980ec1d |
|
19-Oct-2010 |
Eric Dumazet <eric.dumazet@gmail.com> |
net: avoid a dev refcount in ip_mc_find_dev() We hold RTNL in ip_mc_find_dev(), no need to touch device refcount. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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e12b453904c54bbdc515778ff664d87a7f9473af |
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05-Oct-2010 |
Flavio Leitner <fleitner@redhat.com> |
bonding: fix to rejoin multicast groups immediately The IGMP specs states that if the system receives a membership report, it shouldn't send another for the next minute. However, if a link failure happens right after that, the backup slave and the switch connected to this slave will not know about the multicast and the traffic will hang for about a minute. This patch fixes it to rejoin multicast groups immediately after a failover restoring the multicast traffic. Signed-off-by: Flavio Leitner <fleitner@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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5b7c84066733c5dfb0e4016d939757b38de189e4 |
|
30-Sep-2010 |
David Stevens <dlstevens@us.ibm.com> |
ipv4: correct IGMP behavior on v3 query during v2-compatibility mode A recent patch to allow IGMPv2 responses to IGMPv3 queries bypasses length checks for valid query lengths, incorrectly resets the v2_seen timer, and does not support IGMPv1. The following patch responds with a v2 report as required by IGMPv2 while correcting the other problems introduced by the patch. Signed-Off-By: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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7998156344b0d93de61ff8e5d75e96500e43a571 |
|
13-Sep-2010 |
Bob Arendt <rda@rincon.com> |
ipv4: force_igmp_version ignored when a IGMPv3 query received After all these years, it turns out that the /proc/sys/net/ipv4/conf/*/force_igmp_version parameter isn't fully implemented. *Symptom*: When set force_igmp_version to a value of 2, the kernel should only perform multicast IGMPv2 operations (IETF rfc2236). An host-initiated Join message will be sent as a IGMPv2 Join message. But if a IGMPv3 query message is received, the host responds with a IGMPv3 join message. Per rfc3376 and rfc2236, a IGMPv2 host should treat a IGMPv3 query as a IGMPv2 query and respond with an IGMPv2 Join message. *Consequences*: This is an issue when a IGMPv3 capable switch is the querier and will only issue IGMPv3 queries (which double as IGMPv2 querys) and there's an intermediate switch that is only IGMPv2 capable. The intermediate switch processes the initial v2 Join, but fails to recognize the IGMPv3 Join responses to the Query, resulting in a dropped connection when the intermediate v2-only switch times it out. *Identifying issue in the kernel source*: The issue is in this section of code (in net/ipv4/igmp.c), which is called when an IGMP query is received (from mainline 2.6.36-rc3 gitweb): ... A IGMPv3 query has a length >= 12 and no sources. This routine will exit after line 880, setting the general query timer (random timeout between 0 and query response time). This calls igmp_gq_timer_expire(): ... .. which only sends a v3 response. So if a v3 query is received, the kernel always sends a v3 response. IGMP queries happen once every 60 sec (per vlan), so the traffic is low. A IGMPv3 query *is* a strict superset of a IGMPv2 query, so this patch properly short circuit's the v3 behaviour. One issue is that this does not address force_igmp_version=1. Then again, I've never seen any IGMPv1 multicast equipment in the wild. However there is a lot of v2-only equipment. If it's necessary to support the IGMPv1 case as well: 837 if (len == 8 || IGMP_V2_SEEN(in_dev) || IGMP_V1_SEEN(in_dev)) { Signed-off-by: David S. Miller <davem@davemloft.net>
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4bc2f18ba4f22a90ab593c0a580fc9a19c4777b6 |
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09-Jul-2010 |
Eric Dumazet <eric.dumazet@gmail.com> |
net/ipv4: EXPORT_SYMBOL cleanups CodingStyle cleanups EXPORT_SYMBOL should immediately follow the symbol declaration. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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d8d1f30b95a635dbd610dcc5eb641aca8f4768cf |
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11-Jun-2010 |
Changli Gao <xiaosuo@gmail.com> |
net-next: remove useless union keyword remove useless union keyword in rtable, rt6_info and dn_route. Since there is only one member in a union, the union keyword isn't useful. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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9a57a9d291980302b4a3184fbc47dbddac71903e |
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07-Jun-2010 |
Eric Dumazet <eric.dumazet@gmail.com> |
igmp: avoid two atomic ops in igmp_rcv() in_dev_get() -> __in_dev_get_rcu() in a rcu protected function. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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3ed37a6fa70a3a63dbb257fc640facb3974bba40 |
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31-May-2010 |
Joe Perches <joe@perches.com> |
net/ipv4/igmp.c: Remove unnecessary kmalloc casts Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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22bedad3ce112d5ca1eaf043d4990fa2ed698c87 |
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01-Apr-2010 |
Jiri Pirko <jpirko@redhat.com> |
net: convert multicast list to list_head Converts the list and the core manipulating with it to be the same as uc_list. +uses two functions for adding/removing mc address (normal and "global" variant) instead of a function parameter. +removes dev_mcast.c completely. +exposes netdev_hw_addr_list_* macros along with __hw_addr_* functions for manipulation with lists on a sandbox (used in bonding and 80211 drivers) Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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5a0e3ad6af8660be21ca98a971cd00f331318c05 |
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24-Mar-2010 |
Tejun Heo <tj@kernel.org> |
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
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c6b471e6454c0e1c6d756672841cbaeae7c949f8 |
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07-Feb-2010 |
Herbert Xu <herbert@gondor.apana.org.au> |
inet: Remove bogus IGMPv3 report handling Currently we treat IGMPv3 reports as if it were an IGMPv2/v1 report. This is broken as IGMPv3 reports are formatted differently. So we end up suppressing a bogus multicast group (which should be harmless as long as the leading reserved field is zero). In fact, IGMPv3 does not allow membership report suppression so we should simply ignore IGMPv3 membership reports as a host. This patch does exactly that. I kept the case statement for it so people won't accidentally add it back thinking that we overlooked this case. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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c85bb41e93184bf5494dde6d8fe5a81b564c84c8 |
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02-Feb-2010 |
Flavio Leitner <fleitner@redhat.com> |
igmp: fix ip_mc_sf_allow race [v5] Almost all igmp functions accessing inet->mc_list are protected by rtnl_lock(), but there is one exception which is ip_mc_sf_allow(), so there is a chance of either ip_mc_drop_socket or ip_mc_leave_group remove an entry while ip_mc_sf_allow is running causing a crash. Signed-off-by: Flavio Leitner <fleitner@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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2c8c1e7297e19bdef3c178c3ea41d898a7716e3e |
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17-Jan-2010 |
Alexey Dobriyan <adobriyan@gmail.com> |
net: spread __net_init, __net_exit __net_init/__net_exit are apparently not going away, so use them to full extent. In some cases __net_init was removed, because it was called from __net_exit code. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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f64f9e719261a87818dd192a3a2352e5b20fbd0f |
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30-Nov-2009 |
Joe Perches <joe@perches.com> |
net: Move && and || to end of previous line Not including net/atm/ Compiled tested x86 allyesconfig only Added a > 80 column line or two, which I ignored. Existing checkpatch plaints willfully, cheerfully ignored. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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6baff15037693c057e3047da02c460c7e7b346c2 |
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11-Nov-2009 |
Eric Dumazet <eric.dumazet@gmail.com> |
igmp: Use next_net_device_rcu() We need to use next_det_device_rcu() in RCU protected section. We also can avoid in_dev_get()/in_dev_put() overhead (code size mainly) in rcu_read_lock() sections. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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61fbab77a843d2e772322ac130715cc9a98bf718 |
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10-Nov-2009 |
stephen hemminger <shemminger@vyatta.com> |
IPV4: use rcu to walk list of devices in IGMP This also needs to be optimized for large number of devices. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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75c78500ddad74b229cd0691496b8549490496a2 |
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15-Sep-2009 |
Moni Shoua <monis@voltaire.com> |
bonding: remap muticast addresses without using dev_close() and dev_open() This patch fixes commit e36b9d16c6a6d0f59803b3ef04ff3c22c3844c10. The approach there is to call dev_close()/dev_open() whenever the device type is changed in order to remap the device IP multicast addresses to HW multicast addresses. This approach suffers from 2 drawbacks: *. It assumes tha the device is UP when calling dev_close(), or otherwise dev_close() has no affect. It is worth to mention that initscripts (Redhat) and sysconfig (Suse) doesn't act the same in this matter. *. dev_close() has other side affects, like deleting entries from the routing table, which might be unnecessary. The fix here is to directly remap the IP multicast addresses to HW multicast addresses for a bonding device that changes its type, and nothing else. Reported-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Moni Shoua <monis@voltaire.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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adf30907d63893e4208dfe3f5c88ae12bc2f25d5 |
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02-Jun-2009 |
Eric Dumazet <eric.dumazet@gmail.com> |
net: skb->dst accessors 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>
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511c3f92ad5b6d9f8f6464be1b4f85f0422be91a |
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02-Jun-2009 |
Eric Dumazet <eric.dumazet@gmail.com> |
net: skb->rtable accessor Define skb_rtable(const struct sk_buff *skb) accessor to get rtable from skb Delete skb->rtable field Setting rtable is not allowed, just set dst instead as rtable is an alias. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
f771bef98004d9d141b085d987a77d06669d4f4f |
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28-May-2009 |
Nivedita Singhvi <niv@us.ibm.com> |
ipv4: New multicast-all socket option After some discussion offline with Christoph Lameter and David Stevens regarding multicast behaviour in Linux, I'm submitting a slightly modified patch from the one Christoph submitted earlier. This patch provides a new socket option IP_MULTICAST_ALL. In this case, default behaviour is _unchanged_ from the current Linux standard. The socket option is set by default to provide original behaviour. Sockets wishing to receive data only from multicast groups they join explicitly will need to clear this socket option. Signed-off-by: Nivedita Singhvi <niv@us.ibm.com> Signed-off-by: Christoph Lameter<cl@linux.com> Acked-by: David Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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7091e728c570157496e52296d2dbe816a6916836 |
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26-Dec-2008 |
Alexey Dobriyan <adobriyan@gmail.com> |
netns: igmp: make /proc/net/{igmp,mcfilter} per netns This patch makes the followinf proc entries per-netns: /proc/net/igmp /proc/net/mcfilter Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com> Acked-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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a7e9ff735bd5e3437a8e5ecbbc2db3865974a523 |
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03-Nov-2008 |
Jianjun Kong <jianjun@zeuux.org> |
net: clean up net/ipv4/igmp.c Signed-off-by: Jianjun Kong <jianjun@zeuux.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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113aa838ec3a235d883f8357d31d90e16c47fc89 |
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14-Oct-2008 |
Alan Cox <alan@redhat.com> |
net: Rationalise email address: Network Specific Parts Clean up the various different email addresses of mine listed in the code to a single current and valid address. As Dave says his network merges for 2.6.28 are now done this seems a good point to send them in where they won't risk disrupting real changes. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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b8bae41ed6a53cce56c50811a91cd963e3187d1c |
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08-Oct-2008 |
Rami Rosen <ramirose@gmail.com> |
ipv4: add mc_count to in_device. This patch add mc_count to struct in_device and updates increment/decrement/initilaize of this field in IPv4 and in IPv6. - Also printing the vfs /proc entry (/proc/net/igmp) is adjusted to use the new mc_count. Signed-off-by: Rami Rosen <ramirose@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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877acedc0d3ea07f7b36573ed2f1f479c2c1eefd |
|
14-Aug-2008 |
Daniel Lezcano <dlezcano@fr.ibm.com> |
netns: Fix crash by making igmp per namespace This patch makes the multicast socket to be per namespace. When a network namespace is created, other than the init_net and a multicast packet is received, the kernel goes to a hang or a kernel panic. How to reproduce ? * create a child network namespace * create a pair virtual device veth * ip link add type veth * move one side to the pair network device to the child namespace * ip link set netns <childpid> dev veth1 * ping -I veth0 224.0.0.1 The bug appears because the function ip_mc_init_dev does not initialize the different multicast fields as it exits because it is not the init_net. BUG: soft lockup - CPU#0 stuck for 61s! [avahi-daemon:2695] Modules linked in: irq event stamp: 50350 hardirqs last enabled at (50349): [<c03ee949>] _spin_unlock_irqrestore+0x34/0x39 hardirqs last disabled at (50350): [<c03ec639>] schedule+0x9f/0x5ff softirqs last enabled at (45712): [<c0374d4b>] ip_setsockopt+0x8e7/0x909 softirqs last disabled at (45710): [<c03ee682>] _spin_lock_bh+0x8/0x27 Pid: 2695, comm: avahi-daemon Not tainted (2.6.27-rc2-00029-g0872073 #3) EIP: 0060:[<c03ee47c>] EFLAGS: 00000297 CPU: 0 EIP is at __read_lock_failed+0x8/0x10 EAX: c4f38810 EBX: c4f38810 ECX: 00000000 EDX: c04cc22e ESI: fb0000e0 EDI: 00000011 EBP: 0f02000a ESP: c4e3faa0 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 CR0: 8005003b CR2: 44618a40 CR3: 04e37000 CR4: 000006d0 DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 DR6: ffff0ff0 DR7: 00000400 [<c02311f8>] ? _raw_read_lock+0x23/0x25 [<c0390666>] ? ip_check_mc+0x1c/0x83 [<c036d478>] ? ip_route_input+0x229/0xe92 [<c022e2e4>] ? trace_hardirqs_on_thunk+0xc/0x10 [<c0104c9c>] ? do_IRQ+0x69/0x7d [<c0102e64>] ? restore_nocheck_notrace+0x0/0xe [<c036fdba>] ? ip_rcv+0x227/0x505 [<c0358764>] ? netif_receive_skb+0xfe/0x2b3 [<c03588d2>] ? netif_receive_skb+0x26c/0x2b3 [<c035af31>] ? process_backlog+0x73/0xbd [<c035a8cd>] ? net_rx_action+0xc1/0x1ae [<c01218a8>] ? __do_softirq+0x7b/0xef [<c0121953>] ? do_softirq+0x37/0x4d [<c035b50d>] ? dev_queue_xmit+0x3d4/0x40b [<c0122037>] ? local_bh_enable+0x96/0xab [<c035b50d>] ? dev_queue_xmit+0x3d4/0x40b [<c012181e>] ? _local_bh_enable+0x79/0x88 [<c035fcb8>] ? neigh_resolve_output+0x20f/0x239 [<c0373118>] ? ip_finish_output+0x1df/0x209 [<c0373364>] ? ip_dev_loopback_xmit+0x62/0x66 [<c0371db5>] ? ip_local_out+0x15/0x17 [<c0372013>] ? ip_push_pending_frames+0x25c/0x2bb [<c03891b8>] ? udp_push_pending_frames+0x2bb/0x30e [<c038a189>] ? udp_sendmsg+0x413/0x51d [<c038a1a9>] ? udp_sendmsg+0x433/0x51d [<c038f927>] ? inet_sendmsg+0x35/0x3f [<c034f092>] ? sock_sendmsg+0xb8/0xd1 [<c012d554>] ? autoremove_wake_function+0x0/0x2b [<c022e6de>] ? copy_from_user+0x32/0x5e [<c022e6de>] ? copy_from_user+0x32/0x5e [<c034f238>] ? sys_sendmsg+0x18d/0x1f0 [<c0175e90>] ? pipe_write+0x3cb/0x3d7 [<c0170347>] ? do_sync_write+0xbe/0x105 [<c012d554>] ? autoremove_wake_function+0x0/0x2b [<c03503b2>] ? sys_socketcall+0x176/0x1b0 [<c01085ea>] ? syscall_trace_enter+0x6c/0x7b [<c0102e1a>] ? syscall_call+0x7/0xb Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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721499e8931c5732202481ae24f2dfbf9910f129 |
|
20-Jul-2008 |
YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> |
netns: Use net_eq() to compare net-namespaces for optimization. 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>
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0b040829952d84bf2a62526f0e24b624e0699447 |
|
11-Jun-2008 |
Adrian Bunk <bunk@kernel.org> |
net: remove CVS keywords 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>
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f5184d267c1aedb9b7a8cc44e08ff6b8d382c3b5 |
|
13-May-2008 |
Johannes Berg <johannes@sipsolutions.net> |
net: Allow netdevices to specify needed head/tailroom 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>
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3b1e0a655f8eba44ab1ee2a1068d169ccfb853b9 |
|
25-Mar-2008 |
YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> |
[NET] NETNS: Omit sock->sk_net without CONFIG_NET_NS. 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>
|
c346dca10840a874240c78efe3f39acf4312a1f2 |
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25-Mar-2008 |
YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> |
[NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS. 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>
|
ee6b967301b4aa5d4a4b61e2f682f086266db9fb |
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06-Mar-2008 |
Eric Dumazet <dada1@cosmosbay.com> |
[IPV4]: Add 'rtable' field in struct sk_buff to alias 'dst' and avoid casts (Anonymous) unions can help us to avoid ugly casts. A common cast it the (struct rtable *)skb->dst one. Defining an union like : union { struct dst_entry *dst; struct rtable *rtable; }; permits to use skb->rtable in place. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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2430aa85de8343662e8496dac9f9e4dade680023 |
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29-Feb-2008 |
Denis V. Lunev <den@openvz.org> |
[NETNS]: Disable multicaststing configuration inside non-initial namespace. Do not calls hooks from device notifiers and disallow configuration from ioctl/netlink layer. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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cd557bc1c15cbd20fbea47a150e1c7e56834e627 |
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10-Feb-2008 |
Denis V. Lunev <den@openvz.org> |
[IGMP]: Optimize kfree_skb in igmp_rcv. Merge error paths inside igmp_rcv. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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f206351a50ea86250fabea96b9af8d8f8fc02603 |
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23-Jan-2008 |
Denis V. Lunev <den@openvz.org> |
[NETNS]: Add namespace parameter to ip_route_output_key. Needed to propagate it down to the ip_route_output_flow. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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1ab352768fc73838b062776ca5d1add3876a019f |
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23-Jan-2008 |
Denis V. Lunev <den@openvz.org> |
[NETNS]: Add namespace parameter to ip_dev_find. in_dev_find() need a namespace to pass it to fib_get_table(), so add an argument. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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7fee0ca23711ce1a6b13d3ab78915809a72a59ec |
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22-Jan-2008 |
Denis V. Lunev <den@openvz.org> |
[NETNS]: Add netns parameter to inetdev_by_index. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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dd329bfa96dd9dabfc3b5154317bf5fbe9440455 |
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22-Jan-2008 |
Stephen Hemminger <shemminger@vyatta.com> |
[IPV4]: igmp sparse warnings Partial sparse warning fix. The other conditional locking is too much for sparse to handle. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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f97c1e0c6ebdb606c97b6cb5e837c6110ac5a961 |
|
16-Dec-2007 |
Joe Perches <joe@perches.com> |
[IPV4] net/ipv4: Use ipv4_is_<type> Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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586f12115264b767ea6a48ce081ca25a39c1e3dd |
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16-Dec-2007 |
Pavel Emelyanov <xemul@openvz.org> |
[IPV4]: Switch users of ipv4_devconf(_all) to use the pernet one These are scattered over the code, but almost all the "critical" places already have the proper struct net at hand except for snmp proc showing function and routing rtnl handler. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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c439cb2e4b13cf1cb2abcd006b906315a3381323 |
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12-Jan-2008 |
Herbert Xu <herbert@gondor.apana.org.au> |
[IPV4]: Add ip_local_out Most callers of the LOCAL_OUT chain will set the IP packet length and header checksum before doing so. They also share the same output function dst_output. This patch creates a new function called ip_local_out which does all of that and converts the appropriate users over to it. Apart from removing duplicate code, it will also help in merging the IPsec output path once the same thing is done for IPv6. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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b24b8a247ff65c01b252025926fe564209fae4fc |
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24-Jan-2008 |
Pavel Emelyanov <xemul@openvz.org> |
[NET]: Convert init_timer into setup_timer Many-many code in the kernel initialized the timer->function and timer->data together with calling init_timer(timer). There is already a helper for this. Use it for networking code. The patch is HUGE, but makes the code 130 lines shorter (98 insertions(+), 228 deletions(-)). 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>
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cf7732e4cc14b56d593ff53352673e1fd5e3ba52 |
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10-Oct-2007 |
Pavel Emelyanov <xemul@openvz.org> |
[NET]: Make core networking code use seq_open_private This concerns the ipv4 and ipv6 code mostly, but also the netlink and unix sockets. The netlink code is an example of how to use the __seq_open_private() call - it saves the net namespace on this private. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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cfcabdcc2d5a810208e5bb3974121b7ed60119aa |
|
09-Oct-2007 |
Stephen Hemminger <shemminger@linux-foundation.org> |
[NET]: sparse warning fixes Fix a bunch of sparse warnings. Mostly about 0 used as NULL pointer, and shadowed variable declarations. One notable case was that hash size should have been unsigned. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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881d966b48b035ab3f3aeaae0f3d3f9b584f45b2 |
|
17-Sep-2007 |
Eric W. Biederman <ebiederm@xmission.com> |
[NET]: Make the device list and device lookups per namespace. 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>
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457c4cbc5a3dde259d2a1f15d5f9785290397267 |
|
12-Sep-2007 |
Eric W. Biederman <ebiederm@xmission.com> |
[NET]: Make /proc/net per network namespace This patch makes /proc/net per network namespace. It modifies the global variables proc_net and proc_net_stat to be per network namespace. The proc_net file helpers are modified to take a network namespace argument, and all of their callers are fixed to pass &init_net for that argument. This ensures that all of the /proc/net files are only visible and usable in the initial network namespace until the code behind them has been updated to be handle multiple network namespaces. Making /proc/net per namespace is necessary as at least some files in /proc/net depend upon the set of network devices which is per network namespace, and even more files in /proc/net have contents that are relevant to a single network namespace. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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42f811b8bcdf6695bf74de580b1daf53445e8949 |
|
05-Jun-2007 |
Herbert Xu <herbert@gondor.apana.org.au> |
[IPV4]: Convert IPv4 devconf to an array This patch converts the ipv4_devconf config members (everything except sysctl) to an array. This allows easier manipulation which will be needed later on to provide better management of default config values. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
|
7562f876cd93800f2f8c89445f2a563590b24e09 |
|
04-May-2007 |
Pavel Emelianov <xemul@openvz.org> |
[NET]: Rework dev_base via list_head (v3) Cleanup of dev_base list use, with the aim to simplify making device list per-namespace. In almost every occasion, use of dev_base variable and dev->next pointer could be easily replaced by for_each_netdev loop. A few most complicated places were converted to using first_netdev()/next_netdev(). Signed-off-by: Pavel Emelianov <xemul@openvz.org> Acked-by: Kirill Korotaev <dev@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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27a884dc3cb63b93c2b3b643f5b31eed5f8a4d26 |
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20-Apr-2007 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
[SK_BUFF]: Convert skb->tail to sk_buff_data_t So that it is also an offset from skb->head, reduces its size from 8 to 4 bytes on 64bit architectures, allowing us to combine the 4 bytes hole left by the layer headers conversion, reducing struct sk_buff size to 256 bytes, i.e. 4 64byte cachelines, and since the sk_buff slab cache is SLAB_HWCACHE_ALIGN... :-) Many calculations that previously required that skb->{transport,network, mac}_header be first converted to a pointer now can be done directly, being meaningful as offsets or pointers. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
b0e380b1d8a8e0aca215df97702f99815f05c094 |
|
11-Apr-2007 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
[SK_BUFF]: unions of just one member don't get anything done, kill them Renaming skb->h to skb->transport_header, skb->nh to skb->network_header and skb->mac to skb->mac_header, to match the names of the associated helpers (skb[_[re]set]_{transport,network,mac}_header). Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
bff9b61ce330df04c6830d823c30c04203543f01 |
|
16-Mar-2007 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
[SK_BUFF]: Use the helpers to get the layer header pointer Some more cases... Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
d10ba34b001944a8d1c8adb5646140ef089c432b |
|
15-Mar-2007 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
[SK_BUFF]: More skb_put related skb_reset_transport_header This time we have to set it to skb->tail that is not anymore equal to skb->data, so we either add a new helper or just add the skb->tail - skb->data offset, for now do the later. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
9c70220b73908f64792422a2c39c593c4792f2c5 |
|
26-Apr-2007 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
[SK_BUFF]: Introduce skb_transport_header(skb) For the places where we need a pointer to the transport header, it is still legal to touch skb->h.raw directly if just adding to, subtracting from or setting it to another layer header. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
d9edf9e2be0f7661558984c32bd53867a7037fd3 |
|
13-Mar-2007 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
[SK_BUFF]: Introduce igmp_hdr() & friends, remove skb->h.igmph Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
eddc9ec53be2ecdbf4efe0efd4a83052594f0ac0 |
|
21-Apr-2007 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
[SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iph Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
f690808e17925fc45217eb22e8670902ecee5c1b |
|
12-Mar-2007 |
Stephen Hemminger <shemminger@linux-foundation.org> |
[NET]: make seq_operations const The seq_file operations stuff can be marked constant to get it out of dirty cache. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
|
7e28ecc282574a7d72ace365fc9bc86e27ba880f |
|
10-Mar-2007 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
[SK_BUFF]: Use skb_reset_network_header where the skb_pull return was being used But only in the cases where its a newly allocated skb, i.e. one where skb->tail is equal to skb->data, or just after skb_reserve, where this requirement is maintained. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
08882669e06099eb3e6ac407f552743aeaaec73f |
|
13-Mar-2007 |
Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> |
[IPV4]: Fix warning in ip_mc_rejoin_group. Kill warning about unused variable `in_dev' when CONFIG_IP_MULTICAST is not set. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
a816c7c712ff9f6770168b91facb9bfa9f0acd48 |
|
01-Mar-2007 |
Jay Vosburgh <fubar@us.ibm.com> |
bonding: Improve IGMP join processing In active-backup mode, the current bonding code duplicates IGMP traffic to all slaves, so that switches are up to date in case of a failover from an active to a backup interface. If bonding then fails back to the original active interface, it is likely that the "active slave" switch's IGMP forwarding for the port will be out of date until some event occurs to refresh the switch (e.g., a membership query). This patch alters the behavior of bonding to no longer flood IGMP to all ports, and to issue IGMP JOINs to the newly active port at the time of a failover. This insures that switches are kept up to date for all cases. "GOELLESCH Niels" <niels.goellesch@eurocontrol.int> originally reported this problem, and included a patch. His original patch was modified by Jay Vosburgh to additionally remove the existing IGMP flood behavior, use RCU, streamline code paths, fix trailing white space, and adjust for style. Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
|
9a32144e9d7b4e21341174b1a83b82a82353be86 |
|
12-Feb-2007 |
Arjan van de Ven <arjan@linux.intel.com> |
[PATCH] mark struct file_operations const 7 Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
e905a9edab7f4f14f9213b52234e4a346c690911 |
|
09-Feb-2007 |
YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> |
[NET] IPV4: Fix whitespace errors. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
|
cc63f70b8b410eb653449151821f6b8b9af6ca42 |
|
06-Feb-2007 |
Alexey Dobriyan <adobriyan@openvz.org> |
[IPV4/IPV6] multicast: Check add_grhead() return value add_grhead() allocates memory with GFP_ATOMIC and in at least two places skb from it passed to skb_put() without checking. Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
|
d3bc23e7ee9db8023dff5a86bb3b0069ed018789 |
|
15-Nov-2006 |
Al Viro <viro@zeniv.linux.org.uk> |
[NET]: Annotate callers of csum_fold() in net/* Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
|
63007727e0bb09e8d906f73d36a09b9fac0d5893 |
|
28-Sep-2006 |
Al Viro <viro@zeniv.linux.org.uk> |
[IPV4]: trivial igmp annotations Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
|
c0cda068aac3481d40795b115e4fd36f7d386e3a |
|
28-Sep-2006 |
Al Viro <viro@zeniv.linux.org.uk> |
[IPV4]: ip_mc_sf_allow() annotated ip_mc_sf_allow() expects addresses to be passed net-endian. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
|
ea4d9e7220d32348cc9742ba6d27de5165262664 |
|
28-Sep-2006 |
Al Viro <viro@zeniv.linux.org.uk> |
[IPV4]: struct ip_sf_list and struct ip_sf_socklist annotated Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
|
8f935bbd7c6c66796c2403aefdab74bb48045bf6 |
|
28-Sep-2006 |
Al Viro <viro@zeniv.linux.org.uk> |
[IPV4]: ip_mc_{inc,dec}_group() annotations Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
|
a60c4923da795c74db9ff61a60e2f1df5754e4ce |
|
27-Sep-2006 |
Al Viro <viro@zeniv.linux.org.uk> |
[IPV4]: ip_check_mc() annotations annotated arguments Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
|
ab32ea5d8a760e7dd4339634e95d7be24ee5b842 |
|
22-Sep-2006 |
Brian Haley <brian.haley@hp.com> |
[NET/IPV4/IPV6]: Change some sysctl variables to __read_mostly Change net/core, ipv4 and ipv6 sysctl variables to __read_mostly. Couldn't actually measure any performance increase while testing (.3% I consider noise), but seems like the right thing to do. Signed-off-by: Brian Haley <brian.haley@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
84fa7933a33f806bbbaae6775e87459b1ec584c0 |
|
30-Aug-2006 |
Patrick McHardy <kaber@trash.net> |
[NET]: Replace CHECKSUM_HW by CHECKSUM_PARTIAL/CHECKSUM_COMPLETE Replace CHECKSUM_HW by CHECKSUM_PARTIAL (for outgoing packets, whose checksum still needs to be completed) and CHECKSUM_COMPLETE (for incoming packets, device supplied full checksum). Patch originally from Herbert Xu, updated by myself for 2.6.18-rc3. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
|
acd6e00b8e4db542cb6bc9ddfbb4e18bbe29ce4d |
|
18-Aug-2006 |
David L Stevens <dlstevens@us.ibm.com> |
[MCAST]: Fix filter leak on device removal. This fixes source filter leakage when a device is removed and a process leaves the group thereafter. This also includes corresponding fixes for IPv6 multicast source filters on device removal. Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
bb699cbca0096aa3f5f750264ec0af080732375a |
|
15-Aug-2006 |
Michal Ruzicka <michal.ruzicka@comstar.cz> |
[IPV4]: Possible leak of multicast source filter sctructure There is a leak of a socket's multicast source filter list structure on closing a socket with a multicast source filter set on an interface that does not exist any more. Signed-off-by: Michal Ruzicka <michal.ruzicka@comstar.cz> Acked-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
0da974f4f303a6842516b764507e3c0a03f41e5a |
|
21-Jul-2006 |
Panagiotis Issaris <takis@issaris.org> |
[NET]: Conversions from kmalloc+memset to k(z|c)alloc. Signed-off-by: Panagiotis Issaris <takis@issaris.org> Signed-off-by: David S. Miller <davem@davemloft.net>
|
6ab3d5624e172c553004ecc862bfeac16d9d68b7 |
|
30-Jun-2006 |
Jörn Engel <joern@wohnheim.fh-wedel.de> |
Remove obsolete #include <linux/config.h> Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
|
338fcf9886df9ad2873772197a73a57818973316 |
|
06-Jun-2006 |
Alexey Dobriyan <adobriyan@gmail.com> |
[IPV4] igmp: Fixup struct ip_mc_list::multiaddr type All users except two expect 32-bit big-endian value. One is of ->multiaddr = ->multiaddr variety. And last one is "%08lX". Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
153330618691694af64f39fb56c9de051862380e |
|
21-Mar-2006 |
Stephen Hemminger <shemminger@osdl.org> |
[NET]: dev_put/dev_hold cleanup Get rid of the old __dev_put macro that is just a hold over from pre 2.6 kernel. And turn dev_hold into an inline instead of a macro. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
|
6756ae4b4e97aba48c042b4aa6b77a18f507d2cb |
|
21-Mar-2006 |
Stephen Hemminger <shemminger@osdl.org> |
[NET]: Convert RTNL to mutex. This patch turns the RTNL from a semaphore to a new 2.6.16 mutex and gets rid of some of the leftover legacy. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
|
76edc6051e02186fe664ab880447e2d1f96fd884 |
|
01-Feb-2006 |
Al Viro <viro@zeniv.linux.org.uk> |
[PATCH] ipv4 NULL noise removal Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
|
dd1c1853e2742f4938b271dbe0cee735e2ffa3d9 |
|
31-Jan-2006 |
Linus Torvalds <torvalds@g5.osdl.org> |
Fix ipv4/igmp.c compile with gcc-4 and IP_MULTICAST Modern versions of gcc do not like case statements at the end of a block statement: you need at least an empty statement. Using just a "break;" is preferred for visual style. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
|
c5d90e000437a463440c1fe039011a02583a9ee5 |
|
31-Jan-2006 |
Dave Jones <davej@redhat.com> |
[IPV4] igmp: remove pointless printk This is easily triggerable by sending bogus packets, allowing a malicious user to flood remote logs. Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
ad12583f46bcb6ce93ccd99fa063c0d701146b2e |
|
18-Jan-2006 |
David L Stevens <dlstevens@us.ibm.com> |
[IPV4]: Fix multiple bugs in IGMPv3 1) fix "mld_marksources()" to a) send nothing when all queried sources are excluded b) send full exclude report when source queried sources are not excluded c) don't schedule a timer when there's nothing to report 2) fix "add_grec()" to send empty-source records when it should The original check doesn't account for a non-empty source list with all sources inactive; the new code keeps that short-circuit case, and also generates the group header with an empty list if needed. 3) fix mca_crcount decrement to be after add_grec(), which needs its original value 4) add/remove delete records and prevent current advertisements when an exclude-mode filter moves from "active" to "inactive" or vice versa based on new filter additions. Items 1-3 are just IPv4 versions of the IPv6 bugs found by Yan Zheng and fixed earlier. Item #4 is a related bug that affects exclude-mode change records only (but not queries) and also occurs in IPv6 (IPv6 version coming soon). Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
8b3a70058bfe711b2d05ba2134178bae623183ce |
|
12-Jan-2006 |
Kris Katterjohn <kjak@users.sourceforge.net> |
[NET]: Remove more unneeded typecasts on *malloc() This removes more unneeded casts on the return value for kmalloc(), sock_kmalloc(), and vmalloc(). Signed-off-by: Kris Katterjohn <kjak@users.sourceforge.net> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net>
|
14c850212ed8f8cbb5972ad6b8812e08a0bc901c |
|
27-Dec-2005 |
Arnaldo Carvalho de Melo <acme@mandriva.com> |
[INET_SOCK]: Move struct inet_sock & helper functions to net/inet_sock.h To help in reducing the number of include dependencies, several files were touched as they were getting needed headers indirectly for stuff they use. Thanks also to Alan Menegotto for pointing out that net/dccp/proto.c had linux/dccp.h include twice. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
24c6927505ca77ee4ac25fb31dcd56f6506979ed |
|
03-Dec-2005 |
David Stevens <dlstevens@us.ibm.com> |
[IGMP]: workaround for IGMP v1/v2 bug From: David Stevens <dlstevens@us.ibm.com> As explained at: http://www.cs.ucsb.edu/~krishna/igmp_dos/ With IGMP version 1 and 2 it is possible to inject a unicast report to a client which will make it ignore multicast reports sent later by the router. The fix is to only accept the report if is was sent to a multicast or unicast address. Signed-off-by: David S. Miller <davem@davemloft.net>
|
fb286bb2990a107009dbf25f6ffebeb7df77f9be |
|
10-Nov-2005 |
Herbert Xu <herbert@gondor.apana.org.au> |
[NET]: Detect hardware rx checksum faults correctly Here is the patch that introduces the generic skb_checksum_complete which also checks for hardware RX checksum faults. If that happens, it'll call netdev_rx_csum_fault which currently prints out a stack trace with the device name. In future it can turn off RX checksum. I've converted every spot under net/ that does RX checksum checks to use skb_checksum_complete or __skb_checksum_complete with the exceptions of: * Those places where checksums are done bit by bit. These will call netdev_rx_csum_fault directly. * The following have not been completely checked/converted: ipmr ip_vs netfilter dccp This patch is based on patches and suggestions from Stephen Hemminger and David S. Miller. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
|
8713dbf05754aa777f31bf491cb60a111f7ad828 |
|
28-Oct-2005 |
Yan Zheng <yanzheng@21cn.com> |
[MCAST]: ip[6]_mc_add_src should be called when number of sources is zero And filter mode is exclude. Further explanation by David Stevens: Multicast source filters aren't widely used yet, and that's really the only feature that's affected if an application actually exercises this bug, as far as I can tell. An ordinary filter-less multicast join should still work, and only forwarded multicast traffic making use of filters and doing empty-source filters with the MSFILTER ioctl would be at risk of not getting multicast traffic forwarded to them because the reports generated would not be based on the correct counts. Signed-off-by: Yan Zheng <yanzheng@21cn.com Acked-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
|
e5ed639913eea3e4783a550291775ab78dd84966 |
|
03-Oct-2005 |
Herbert Xu <herbert@gondor.apana.org.au> |
[IPV4]: Replace __in_dev_get with __in_dev_get_rcu/rtnl The following patch renames __in_dev_get() to __in_dev_get_rtnl() and introduces __in_dev_get_rcu() to cover the second case. 1) RCU with refcnt should use in_dev_get(). 2) RCU without refcnt should use __in_dev_get_rcu(). 3) All others must hold RTNL and use __in_dev_get_rtnl(). There is one exception in net/ipv4/route.c which is in fact a pre-existing race condition. I've marked it as such so that we remember to fix it. This patch is based on suggestions and prior work by Suzanne Wood and Paul McKenney. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
|
de9daad90ecb54f3c37c3f8967d581e20d927539 |
|
15-Sep-2005 |
Denis Lukianov <denis@voxelsoft.com> |
[MCAST]: Fix MCAST_EXCLUDE line dupes This patch fixes line dupes at /ipv4/igmp.c and /ipv6/mcast.c in the 2.6 kernel, where MCAST_EXCLUDE is mistakenly used instead of MCAST_INCLUDE. Signed-off-by: Denis Lukianov <denis@voxelsoft.com> Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
64ce207306debd7157f47282be94770407bec01c |
|
10-Aug-2005 |
Patrick McHardy <kaber@trash.net> |
[NET]: Make NETDEBUG pure printk wrappers Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
|
84b42baef775b0e3415ccece17cf694f50326d01 |
|
09-Jul-2005 |
David L Stevens <dlstevens@us.ibm.com> |
[IPV4]: fix IPv4 leave-group group matching This patch fixes the multicast group matching for IP_DROP_MEMBERSHIP, similar to the IP_ADD_MEMBERSHIP fix in a prior patch. Groups are identifiedby <group address,interface> and including the interface address in the match will fail if a leave-group is done by address when the join was done by index, or if different addresses on the same interface are used in the join and leave. Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
9951f036fe8a4e6b21962559c64ff13b290ff01a |
|
09-Jul-2005 |
David L Stevens <dlstevens@us.ibm.com> |
[IPV4]: (INCLUDE,empty)/leave-group equivalence for full-state MSF APIs & errno fix 1) Adds (INCLUDE, empty)/leave-group equivalence to the full-state multicast source filter APIs (IPv4 and IPv6) 2) Fixes an incorrect errno in the IPv6 leave-group (ENOENT should be EADDRNOTAVAIL) Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
917f2f105ea4bbba8604e3ed55233eebda7afe6a |
|
09-Jul-2005 |
David L Stevens <dlstevens@us.ibm.com> |
[IPV4]: multicast API "join" issues 1) In the full-state API when imsf_numsrc == 0 errno should be "0", but returns EADDRNOTAVAIL 2) An illegal filter mode change errno should be EINVAL, but returns EADDRNOTAVAIL 3) Trying to do an any-source option without IP_ADD_MEMBERSHIP errno should be EINVAL, but returns EADDRNOTAVAIL 4) Adds comments for the less obvious error return values Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
8cdaaa15da58806ac3c75d96c40aef9e31445a25 |
|
09-Jul-2005 |
David L Stevens <dlstevens@us.ibm.com> |
[IPV4]: multicast API "join" issues 1) Changes IP_ADD_SOURCE_MEMBERSHIP and MCAST_JOIN_SOURCE_GROUP to ignore EADDRINUSE errors on a "courtesy join" -- prior membership or not is ok for these. 2) Adds "leave group" equivalence of (INCLUDE, empty) filters in the delta-based API. Without this, mixing delta-based API calls that end in an (INCLUDE, empty) filter would not allow a subsequent regular IP_ADD_MEMBERSHIP. It also frees socket buffer memory that isn't needed for both the multicast group record and source filter. Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
|
ca9b907d140a5f249250d19f956129dbbbf84f73 |
|
09-Jul-2005 |
David L Stevens <dlstevens@us.ibm.com> |
[IPV4]: multicast API "join" issues This patch corrects a few problems with the IP_ADD_MEMBERSHIP socket option: 1) The existing code makes an attempt at reference counting joins when using the ip_mreqn/imr_ifindex interface. Joining the same group on the same socket is an error, whatever the API. This leads to unexpected results when mixing ip_mreqn by index with ip_mreqn by address, ip_mreq, or other API's. For example, ip_mreq followed by ip_mreqn of the same group will "work" while the same two reversed will not. Fixed to always return EADDRINUSE on a duplicate join and removed the (now unused) reference count in ip_mc_socklist. 2) The group-search list in ip_mc_join_group() is comparing a full ip_mreqn structure and all of it must match for it to find the group. This doesn't correctly match a group that was joined with ip_mreq or ip_mreqn with an address (with or without an index). It also doesn't match groups that are joined by different addresses on the same interface. All of these are the same multicast group, which is identified by group address and interface index. Fixed the check to correctly match groups so we don't get duplicate group entries on the ip_mc_socklist. 3) The old code allocates a multicast address before searching for duplicates requiring it to free in various error cases. This patch moves the allocate until after the search and igmp_max_memberships check, so never a need to allocate, then free an entry. Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
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17-Apr-2005 |
Linus Torvalds <torvalds@ppc970.osdl.org> |
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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