- 14 6月, 2007 6 次提交
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由 Vlad Yasevich 提交于
Right now, when we receive a mtu estimate smaller then minim threshold in the ICMP message, we disable the path mtu discovery on the transport. This leads to the never increasing sctp fragmentation point even when the real path mtu has increased. Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com>
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由 Vlad Yasevich 提交于
Currently, if the socket is owned by the user, we drop the ICMP message. As a result SCTP forgets that path MTU changed and never adjusting it's estimate. This causes all subsequent packets to be fragmented. With this patch, we'll flag the association that it needs to udpate it's estimate based on the already updated routing information. Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Acked-by: NSridhar Samudrala <sri@us.ibm.com>
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由 Vlad Yasevich 提交于
Introduce new function sctp_transport_update_pmtu that updates the transports and destination caches view of the path mtu. Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Acked-by: NSridhar Samudrala <sri@us.ibm.com>
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由 Vlad Yasevich 提交于
If the copy_to_user or copy_user calls fail in sctp_getsockopt_local_addrs(), the function should free locally allocated storage before returning error. Spotted by Coverity. Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Acked-by: NSridhar Samudrala <sri@us.ibm.com>
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由 Vlad Yasevich 提交于
Allow sctp_bindx() to accept multiple address with unspecified port. In this case, all addresses inherit the first bound port. We still catch full mis-matches. Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Acked-by: NSridhar Samudrala <sri@us.ibm.com>
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由 Vlad Yasevich 提交于
During peeloff of AF_INET6 socket, the inet6_sk(sk)->daddr wasn't set correctly since the code was assuming IPv4 only. Now we use a correct call to set the destination address. Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Acked-by: NSridhar Samudrala <sri@us.ibm.com>
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- 04 6月, 2007 1 次提交
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由 Bill Nottingham 提交于
Recent gcc versions emit warnings when unsigned variables are compared < 0 or >= 0. Signed-off-by: NBill Nottingham <notting@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 25 5月, 2007 1 次提交
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由 Jan Engelhardt 提交于
Use menuconfigs instead of menus, so the whole menu can be disabled at once instead of going through all options. Signed-off-by: NJan Engelhardt <jengelh@gmx.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 11 5月, 2007 3 次提交
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由 Vlad Yasevich 提交于
The socket API draft is unclear about whether to include the chunk header or not. Recent discussion on the sctp implementors mailing list clarified that the chunk header shouldn't be included, but the error parameter header still needs to be there. Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Vlad Yasevich 提交于
I broke the non-wildcard case recently. This is to fixes it. Now, explictitly bound addresses can ge retrieved using the API. Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Vlad Yasevich 提交于
SCTP was checking for NULL when trying to detect hmac allocation failure where it should have been using IS_ERR. Also, print a rate limited warning to the log telling the user what happend. Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 09 5月, 2007 1 次提交
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由 Michael Opdenacker 提交于
Signed-off-by: NMichael Opdenacker <michael@free-electrons.com> Signed-off-by: NAdrian Bunk <bunk@stusta.de>
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- 05 5月, 2007 4 次提交
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由 Vlad Yasevich 提交于
During the INIT/COOKIE-ACK collision cases, it's possible to get into a situation where the association id is not yet set at the time of the user event generation. As a result, user events have an association id set to 0 which will confuse applications. This happens if we hit case B of duplicate cookie processing. In the particular example found and provided by Oscar Isaula <Oscar.Isaula@motorola.com>, flow looks like this: A B ---- INIT-------> (lost) <---------INIT------ ---- INIT-ACK---> <------ Cookie ECHO When the Cookie Echo is received, we end up trying to update the association that was created on A as a result of the (lost) INIT, but that association doesn't have the ID set yet. Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Sridhar Samudrala 提交于
Signed-off-by: NSridhar Samudrala <sri@us.ibm.com> Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Vlad Yasevich 提交于
Update the SO_REUSEADDR handling to also check for listen state. This was muliple listening server sockets can't be created and they will not steal packets from each other. Reported by Paolo Galtieri <pgaltieri@mvista.com> Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Vlad Yasevich 提交于
We need to make sure that all destination ports are the same, since the association really must not connect to multiple different ports at once. This was reported on the sctp-impl list. Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 04 5月, 2007 1 次提交
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由 Pavel Emelianov 提交于
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: NPavel Emelianov <xemul@openvz.org> Acked-by: NKirill Korotaev <dev@openvz.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 29 4月, 2007 1 次提交
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由 Vlad Yasevich 提交于
sctp_getsockopt_local_addrs_old() in net/sctp/socket.c calls copy_to_user() while the spinlock addr_lock is held. this should not be done as copy_to_user() might sleep. the call to sctp_copy_laddrs_to_user() while holding the lock is also problematic as it calls copy_to_user() Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 26 4月, 2007 19 次提交
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由 Stephen Hemminger 提交于
Spring cleaning time... There seems to be a lot of places in the network code that have extra bogus semicolons after conditionals. Most commonly is a bogus semicolon after: switch() { } Signed-off-by: NStephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Herbert Xu 提交于
When a transmitted packet is looped back directly, CHECKSUM_PARTIAL maps to the semantics of CHECKSUM_UNNECESSARY. Therefore we should treat it as such in the stack. Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Vlad Yasevich 提交于
Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Vlad Yasevich 提交于
As stated in the sctp socket api draft: sac_info: variable If the sac_state is SCTP_COMM_LOST and an ABORT chunk was received for this association, sac_info[] contains the complete ABORT chunk as defined in the SCTP specification RFC2960 [RFC2960] section 3.3.7. We now save received ABORT chunks into the sac_info field and pass that to the user. Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Vlad Yasevich 提交于
Parameters only take effect when a corresponding flag bit is set and a value is specified. This means we need to check the flags in addition to checking for non-zero value. Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Vlad Yasevich 提交于
Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Vlad Yasevich 提交于
This option induces partial delivery to run as soon as the specified amount of data has been accumulated on the association. However, we give preference to fully reassembled messages over PD messages. In any case, window and buffer is freed up. Signed-off-by: NVlad Yasevich <vladislav.yasevich@.hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Vlad Yasevich 提交于
This option was introduced in draft-ietf-tsvwg-sctpsocket-13. It prevents head-of-line blocking in the case of one-to-many endpoint. Applications enabling this option really must enable SCTP_SNDRCV event so that they would know where the data belongs. Based on an earlier patch by Ivan Skytte Jørgensen. Additionally, this functionality now permits multiple associations on the same endpoint to enter Partial Delivery. Applications should be extra careful, when using this functionality, to track EOR indicators. Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
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: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
With this we save 8 bytes per network packet, leaving a 4 bytes hole to be used in further shrinking work, likely with the offsetization of other pointers, such as ->{data,tail,end}, at the cost of adds, that were minimized by the usual practice of setting skb->{mac,nh,n}.raw to a local variable that is then accessed multiple times in each function, it also is not more expensive than before with regards to most of the handling of such headers, like setting one of these headers to another (transport to network, etc), or subtracting, adding to/from it, comparing them, etc. Now we have this layout for sk_buff on a x86_64 machine: [acme@mica net-2.6.22]$ pahole vmlinux sk_buff struct sk_buff { struct sk_buff * next; /* 0 8 */ struct sk_buff * prev; /* 8 8 */ struct rb_node rb; /* 16 24 */ struct sock * sk; /* 40 8 */ ktime_t tstamp; /* 48 8 */ struct net_device * dev; /* 56 8 */ /* --- cacheline 1 boundary (64 bytes) --- */ struct net_device * input_dev; /* 64 8 */ sk_buff_data_t transport_header; /* 72 4 */ sk_buff_data_t network_header; /* 76 4 */ sk_buff_data_t mac_header; /* 80 4 */ /* XXX 4 bytes hole, try to pack */ struct dst_entry * dst; /* 88 8 */ struct sec_path * sp; /* 96 8 */ char cb[48]; /* 104 48 */ /* cacheline 2 boundary (128 bytes) was 24 bytes ago*/ unsigned int len; /* 152 4 */ unsigned int data_len; /* 156 4 */ unsigned int mac_len; /* 160 4 */ union { __wsum csum; /* 4 */ __u32 csum_offset; /* 4 */ }; /* 164 4 */ __u32 priority; /* 168 4 */ __u8 local_df:1; /* 172 1 */ __u8 cloned:1; /* 172 1 */ __u8 ip_summed:2; /* 172 1 */ __u8 nohdr:1; /* 172 1 */ __u8 nfctinfo:3; /* 172 1 */ __u8 pkt_type:3; /* 173 1 */ __u8 fclone:2; /* 173 1 */ __u8 ipvs_property:1; /* 173 1 */ /* XXX 2 bits hole, try to pack */ __be16 protocol; /* 174 2 */ void (*destructor)(struct sk_buff *); /* 176 8 */ struct nf_conntrack * nfct; /* 184 8 */ /* --- cacheline 3 boundary (192 bytes) --- */ struct sk_buff * nfct_reasm; /* 192 8 */ struct nf_bridge_info *nf_bridge; /* 200 8 */ __u16 tc_index; /* 208 2 */ __u16 tc_verd; /* 210 2 */ dma_cookie_t dma_cookie; /* 212 4 */ __u32 secmark; /* 216 4 */ __u32 mark; /* 220 4 */ unsigned int truesize; /* 224 4 */ atomic_t users; /* 228 4 */ unsigned char * head; /* 232 8 */ unsigned char * data; /* 240 8 */ unsigned char * tail; /* 248 8 */ /* --- cacheline 4 boundary (256 bytes) --- */ unsigned char * end; /* 256 8 */ }; /* size: 264, cachelines: 5 */ /* sum members: 260, holes: 1, sum holes: 4 */ /* bit holes: 1, sum bit holes: 2 bits */ /* last cacheline: 8 bytes */ On 32 bits nothing changes, and pointers continue to be used with the compiler turning all this abstraction layer into dust. But there are some sk_buff validation tricks that are now possible, humm... :-) Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
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: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
For consistency with all the other skb->h.raw accessors. Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
For the quite common 'skb->h.raw - skb->data' sequence. Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
Now the skb->nh union has just one member, .raw, i.e. it is just like the skb->mac union, strange, no? I'm just leaving it like that till the transport layer is done with, when we'll rename skb->mac.raw to skb->mac_header (or ->mac_header_offset?), ditto for ->{h,nh}. Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
Now related to this form: skb->nh.ipv6h = (struct ipv6hdr *)skb_put(skb, length); That, as the others, is done when skb->tail is still equal to skb->data, making the conversion to skb_reset_network_header possible. Also one more case equivalent to skb->nh.raw = skb->data, of this form: iph = (struct ipv6hdr *)skb->data; <SNIP> skb->nh.ipv6h = iph; Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
This time of the type: skb->nh.iph = (struct iphdr *)skb->data; That is completely equivalent to: skb->nh.raw = skb->data; Wonder why people love casts... :-) Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 19 4月, 2007 1 次提交
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由 Vlad Yasevich 提交于
The way partial delivery is currently implemnted, it is possible to intereleave a message (either from another steram, or unordered) that is not part of partial delivery process. The only way to this is for a message to not be a fragment and be 'in order' or unorderd for a given stream. This will result in bypassing the reassembly/ordering queues where things live duing partial delivery, and the message will be delivered to the socket in the middle of partial delivery. This is a two-fold problem, in that: 1. the app now must check the stream-id and flags which it may not be doing. 2. this clearing partial delivery state from the association and results in ulp hanging. This patch is a band-aid over a much bigger problem in that we don't do stream interleave. Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 18 4月, 2007 2 次提交
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由 Paolo Galtieri 提交于
During the sctp_bindx() call to add additional addresses to the endpoint, any v4mapped addresses are converted and stored as regular v4 addresses. However, when trying to remove these addresses, the v4mapped addresses are not converted and the operation fails. This patch unmaps the addresses on during the remove operation as well. Signed-off-by: NPaolo Galtieri <pgaltieri@mvista.com> Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tsutomu Fujii 提交于
In current implementation, LKSCTP does receive buffer accounting for data in sctp_receive_queue and pd_lobby. However, LKSCTP don't do accounting for data in frag_list when data is fragmented. In addition, LKSCTP doesn't do accounting for data in reasm and lobby queue in structure sctp_ulpq. When there are date in these queue, assertion failed message is printed in inet_sock_destruct because sk_rmem_alloc of oldsk does not become 0 when socket is destroyed. Signed-off-by: NTsutomu Fujii <t-fujii@nb.jp.nec.com> Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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