- 01 May, 2010 20 commits
-
-
Vlad Yasevich authored
When we create the sctp_datamsg and fragment the user data, we know exactly if we are sending full segments or not and how they might be bundled. During this time, we can mark messages a Nagle capable or not. This makes the check at transmit time much simpler. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Vlad Yasevich authored
Right now, if the highest tsn in the SACK doesn't change, we'll end up scanning the transmitted lists on the transports twice: once for locating the highest _new_ tsn, and once for actually tagging chunks as acked. This is a waste, since we can record the highest _new_ tsn at the same time as tagging chunks. Long ago this was not possible because we would try to mark chunks as missing at the same time as tagging them acked and this approach didn't work. Now that the two steps are separate, we can re-use the old approach. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Vlad Yasevich authored
According to RFC 4960 Section 7.2.4: If an endpoint is in Fast Recovery and a SACK arrives that advances the Cumulative TSN Ack Point, the miss indications are incremented for all TSNs reported missing in the SACK. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Vlad Yasevich authored
rwnd_press tracks the pressure on the recieve window. Every timer the receive buffer overlows, we truncate the receive window and then grow it back. However, if we don't track the cumulative presser, it's possible to reach a situation when receive buffer is empty, but rwnd stays truncated. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Vlad Yasevich authored
SCTP fast recovery algorithm really applies per association and impacts all transports. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Vlad Yasevich authored
Right now, sctp transports are not fully initialized and when adding any new fields, they have to be explicitely initialized. This is prone to mistakes. So we switch to calling kzalloc() which makes things much simpler. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Vlad Yasevich authored
Saves some room in the sctp_transport structure. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Vlad Yasevich authored
We don't need to force the T3 timer any more and it's actually wrong to do as it causes too long of a delay. The timer will be started if one is not running, but if one is running, we leave it alone. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Vlad Yasevich authored
The 'resent' bit is used to make sure that we don't update rto estimate based on retransmitted chunks. However, we already have the 'rto_pending' bit that we test when need to update rto, so 'resent' bit is just extra. Additionally, we currently have a bug in that we always set a 'resent' bit and thus rto estimate is only updated by Heartbeats. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Vlad Yasevich authored
commit 4951feda0c60d1ef681f1a270afdd617924ab041 sctp: Do no select unconfirmed transports for retransmissions added code to make sure that we do not select unconfirmed paths for data transmission. This caused a problem when there are only 2 paths, 1 unconfirmed and 1 unreachable. In that case, the next retransmit path returned is NULL and that causes a kernel crash. The solution is to only change retransmit paths if we found one to use. Reported-by: Frank Schuster <frank.schuster01@web.de> Signed-off-b: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Dan Carpenter authored
This assignment isn't needed because we did it earlier already. Also another reason to delete the assignment is because it triggers a Smatch warning about checking for NULL pointers after a dereference. Reported-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Wei Yongjun authored
This patch implement sctp association probing module, the module will be called sctp_probe. This module allows for capturing the changes to SCTP association state in response to incoming packets. It is used for debugging SCTP congestion control algorithms. Usage: $ modprobe sctp_probe [full=n] [port=n] [bufsize=n] $ cat /proc/net/sctpprobe The output format is: TIME ASSOC LPORT RPORT MTU RWND UNACK <REMOTE-ADDR STATE CWND SSTHRESH INFLIGHT PARTIAL_BYTES_ACKED MTU> ... The output will be like this: 9.226086 c4064c48 9000 8000 1500 53352 1 *192.168.0.19 1 4380 54784 1252 0 1500 9.287195 c4064c48 9000 8000 1500 45144 5 *192.168.0.19 1 5880 54784 6500 0 1500 9.289130 c4064c48 9000 8000 1500 42724 5 *192.168.0.19 1 7380 54784 6500 0 1500 9.620332 c4064c48 9000 8000 1500 48284 4 *192.168.0.19 1 8880 54784 5200 0 1500 ...... Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Shan Wei authored
sctp_chunk_is_data macro is defined to decide that whether a chunk is data chunk or not. Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Vlad Yasevich authored
An unconfirmed transport is one that we have not been able to reach since the beginning. There is no point in trying to retrasnmit data on those transports. Also, the specification forbids it due to security issues. Reported-by: Frank Schuster <frank.schuster01@web.de> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Wei Yongjun authored
While doing retranmit, if control chunk exists, such as FORWARD TSN chunk, and the DATA chunk can not be bundled with this control chunk because of PMTU limit, no DATA chunk will be retranmitted in the current implementation. This patch makes sure to retranmit at least one DATA chunk in this case. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Wei Yongjun authored
While lookup the output route, we do not set the src and dest port. This will cause we got a wrong route if we had set the outbund transport to IPsec with src or dst port. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Wei Yongjun authored
In current implementation if ABORT chunk is received with T flag is set and zero verification tag in COOKIE-WAIT state, the ABORT chunk will be always accepted. This is because in COOKIE-WAIT state, the endpoint does not know the peer's verification tag, and it's zero in the endpoint. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Wei Yongjun authored
PR-SCTP extension section 3.5 Sender Side Implementation of PR-SCTP: C5) If a FORWARD TSN is sent, the sender MUST assure that at least one T3-rtx timer is running. So this patch fix to assure at least one T3-rtx timer is running if a FORWARD TSN is or will to sent. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Vlad Yasevich authored
SHUTDOWN-ACK is alaways sent to the primary path at the first time, but should better transmit SHUTDOWN-ACK chunk to the same destination transport address from which it received the SHUTDOWN chunk. Based on the work from Wei Yongjun <yjwei@cn.fujitsu.com>. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
Vlad Yasevich authored
The function should use the address family of the address when trying to determine the length of the structure. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
-
- 30 Apr, 2010 5 commits
-
-
Dan Carpenter authored
We dereference "sk" unconditionally elsewhere in the function. This was left over from: b30bd282 "ip6_xmit: remove unnecessary NULL ptr check". According to that commit message, "the sk argument to ip6_xmit is never NULL nowadays since the skb->priority assigment expects a valid socket." Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-
Changli Gao authored
potential uninitialized variable num_xfrms fix compiler warning: 'num_xfrms' may be used uninitialized in this function. Signed-off-by: Changli Gao <xiaosuo@gmail.com> ---- net/xfrm/xfrm_policy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Signed-off-by: David S. Miller <davem@davemloft.net>
-
Eric Dumazet authored
sock_recv_ts_and_drops() is fat and slow (~ 4% of cpu time on some profiles) We can test all socket flags at once to make fast path fast again. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-
Jonas Sjöquist authored
This patch removes vid/pid for Ericsson MBM devices from the whitelist set of devices. The MBM devices are instead identified by GUID. In order for cdc_ether to handle these devices the GUID in the MDLM descriptor is tested. All MBM devices currently handled by cdc_ether as well as future CDC Ethernet MBM devices can be identified by the GUID. This is the same solution used in Carl Nordbeck's mbm driver, http://kerneltrap.org/mailarchive/linux-usb/2008/11/17/4141384/thread I post this as RFC to get feedback on however cdc_ether is the correct place to do the binding, or if it should be done in a separate driver, e.g. zaurus. Signed-off-by: Jonas Sjöquist <jonas.sjoquist@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-
stephen hemminger authored
The following does the same thing without the extra overhead of testing all the registers. It also handles the out of memory case. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Tested-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-
- 28 Apr, 2010 15 commits
-
-
Eric Dumazet authored
When queueing a skb to socket, we can immediately release its dst if target socket do not use IP_CMSG_PKTINFO. tcp_data_queue() can drop dst too. This to benefit from a hot cache line and avoid the receiver, possibly on another cpu, to dirty this cache line himself. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-
Eric Dumazet authored
Since commit 95766fff ([UDP]: Add memory accounting.), each received packet needs one extra sock_lock()/sock_release() pair. This added latency because of possible backlog handling. Then later, ticket spinlocks added yet another latency source in case of DDOS. This patch introduces lock_sock_bh() and unlock_sock_bh() synchronization primitives, avoiding one atomic operation and backlog processing. skb_free_datagram_locked() uses them instead of full blown lock_sock()/release_sock(). skb is orphaned inside locked section for proper socket memory reclaim, and finally freed outside of it. UDP receive path now take the socket spinlock only once. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-
Emil Tantilov authored
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-
Hauke Mehrtens authored
in your merge in 5c01d566 you added "int i;" into wl1271_main.c which is unused in that function. This patch fixes the merge problem: Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: David S. Miller <davem@davemloft.net>
-
Sjur Braendeland authored
Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-
Sjur Braendeland authored
Changes: o Bugfix: Flow control was causing the device to be destroyed. o Bugfix: Handle CAIF channel connect failures. o If the underlying link layer is gone the net-device is no longer removed, but closed. Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-
Sjur Braendeland authored
Changes: This is a complete re-write of the socket layer. Making the socket implementation more aligned with the other socket layers and using more of the support functions available in sock.c. Lots of code is copied from af_unix (and some from af_irda). Non-blocking mode should be working as well. Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-
Sjur Braendeland authored
Changes: o Function cfcnfg_disconn_adapt_layer is changed to do asynchronous disconnect, not waiting for any response from the modem. Due to this the function cfcnfg_linkdestroy_rsp does nothing anymore. o Because disconnect may take down a connection before a connect response is received the function cfcnfg_linkup_rsp is checking if the client is still waiting for the response, if not a disconnect request is sent to the modem. o cfctrl is no longer keeping track of pending disconnect requests. o Added function cfctrl_cancel_req, which is used for deleting a pending connect request if disconnect is done before connect response is received. o Removed unused function cfctrl_insert_req2 o Added better handling of connect reject from modem. Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-
Sjur Braendeland authored
Changes: o Added functions cfsrvl_get and cfsrvl_put. o Added support release_client to use by socket and net device. o Increase reference counting for in-flight packets from cfmuxl Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-
Sjur Braendeland authored
Changes: o Renamed cfcnfg_del_adapt_layer to cfcnfg_disconn_adapt_layer o Fixed typo cfcfg to cfcnfg o Renamed linkid to channel_id o Updated documentation in caif_dev.h o Minor formatting changes Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-
Sjur Braendeland authored
Changes: o Added permission checks for installing. CAP_SYS_ADMIN and CAP_SYS_TTY_CONFIG can install the ldisc. o Check if allocation of skb was successful. Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-
Ben Hutchings authored
Create a core TX queue and 2 hardware TX queues for each channel. If separate_tx_channels is set, create equal numbers of RX and TX channels instead. Rewrite the channel and queue iteration macros accordingly. Eliminate efx_channel::used_flags as redundant. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-
Ben Hutchings authored
This makes no immediate difference, but we definitely do not want to test all TX queues once we allocate a pair of TX queues to each channel. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-
Steve Hodgson authored
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-
Ben Hutchings authored
There is no need for this to be unsigned long; make it unsigned int. It does need a line in kernel-doc, so add that. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-