- 24 Aug, 2010 35 commits
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Yevgeny Petrilin authored
Signed-off-by:
Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Yevgeny Petrilin authored
Adding capability for RSS for UDP traffic, hashing is done based on IP addresses and UDP port number. The support depends on HW/FW capabilities. Signed-off-by:
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Yevgeny Petrilin authored
When Mac address is removed from one port of the CX2 device, the other device should reconfigure its Mac. This fixes an issue with failover, when both ports have the same Mac address, and one of the ports, is closed, the second one stops receiving traffic. (bugzilla #1965 at bugs.openfabrics.org) Signed-off-by:
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Yevgeny Petrilin authored
In case that the rings were not fully filled, the report in Ethtool should be according to the actual size that was filled. Signed-off-by:
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Yevgeny Petrilin authored
The report now based on query from FW, giving the correct tranciever type and link speed. Signed-off-by:
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Yevgeny Petrilin authored
The selftest includes 5 features: 1. Interrupt test: Executing commands and receiving command completion on all our interrupt vectors. 2. Link test: Verifying we are connected to valid link partner. 3. Speed test: Check that we negotiated link speed correctly. 4. Registers test: Activate HW health check command. 5. Loopback test: Send a packet on loopback interface and catch it on RX side. Signed-off-by:
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Yevgeny Petrilin authored
We might try to use resources which were not activated. Signed-off-by:
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Yevgeny Petrilin authored
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Yevgeny Petrilin authored
Defined as sum of default number of TX rings and number of rings used for priority flow control mode. Signed-off-by:
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Yevgeny Petrilin authored
All port's resources should be closed before we give the CLOSE_PORT command to the firmware. Signed-off-by:
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Yevgeny Petrilin authored
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Yevgeny Petrilin authored
When configuring HW resources, the RX ring size that is passed should be the actual size that depends on number of buffers that we succeeded to allocate. The mask for ring size should also be configured accordingly Signed-off-by:
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Yevgeny Petrilin authored
When allocating new fragments to replace the ones that would be passed to the stack, The fragments that should be replaced, are the ones that were already used. Signed-off-by:
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Stephen Hemminger authored
Trivial extension to existing meta data match rules to allow matching on skb receive hash value. Signed-off-by:
Stephen Hemminger <shemminger@vyatta.com> Signed-off-by:
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Joe Perches authored
Last use was removed, so remove the #define. Signed-off-by:
Joe Perches <joe@perches.com> Signed-off-by:
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Eric Dumazet authored
Compiler is not smart enough to avoid a conditional branch. Signed-off-by:
Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by:
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Eric Dumazet authored
Use integrated net_device stats instead of a private one Get rid of bcm_enet_get_stats() Signed-off-by:
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Eric Dumazet authored
drivers can avoid implementing ndo_get_stats method if using netdevice stats structure. Signed-off-by:
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Eric Dumazet authored
drivers can avoid implementing ndo_get_stats method if using netdevice stats structure. Signed-off-by:
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Simon Horman authored
IFF_OVS_DATAPATH is a place-holder for the Open vSwitch datapath which I am preparing to submit for merging. As all 16 bits of priv_flags are already assigned flags, also increase the size of priv_flags to 32 bits. Unfortunately, by my calculations this increases the size of struct net_device by 4 bytes on 32bit architectures and 8 bytes on 64 bit architectures. I couldn't see an obvious way to avoid that. Cc: Jesse Gross <jesse@nicira.com> Signed-off-by:
Simon Horman <horms@verge.net.au> Signed-off-by:
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stephen hemminger authored
The SNMP daemon uses ethtool to determine the speed of network interfaces. This fails on Debian (and probably elsewhere) because for security SNMP daemon runs as non-root user (snmp). Note: A similar patch was rejected previously because of a concern about the possibility that on some hardware querying the ethtool settings requires access to the PHY and could slow the machine down. But the security risk of requiring SNMP daemon (and related services) to run as root far out weighs the risk of denial-of-service. Signed-off-by:
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Eric Dumazet authored
No need to use a temporary struct rtnl_link_stats64 variable, just copy the source to skb buffer. Signed-off-by:
Ben Hutchings <bhutchings@solarflare.com> Signed-off-by:
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Changli Gao authored
Signed-off-by:
Changli Gao <xiaosuo@gmail.com> Signed-off-by:
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David S. Miller authored
It uses ip_send_check() and stuff like that. Reported-by:
Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
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Dimitris Michailidis authored
Signed-off-by:
Dimitris Michailidis <dm@chelsio.com> Signed-off-by:
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Dimitris Michailidis authored
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Dimitris Michailidis authored
Extend the address translation for eeprom read/write (code used by ethtool -[eE]) to functions other than 0. Signed-off-by:
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Dimitris Michailidis authored
Currently the driver assumes that queue IDs start at 0 but that's true only for function 0. To support operation on other functions get the start of the queue ranges from FW and offset accordingly. Signed-off-by:
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David S. Miller authored
This driver doesn't support LRO, NTUPLE, or the RXHASH features. So it should not set these ethtool operations. This also fixes the warning: drivers/net/bna/bnad_ethtool.c:1272: warning: initialization from incompatible pointer type Signed-off-by: -
Rasesh Mody authored
This is patch 1/6 which contains linux driver source for Brocade's BR1010/BR1020 10Gb CEE capable ethernet adapter. Signed-off-by:
Debashis Dutt <ddutt@brocade.com> Signed-off-by:
Rasesh Mody <rmody@brocade.com> Signed-off-by:
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Gerrit Renker authored
The current CCID-2 RTT estimator code is in parts broken and lags behind the suggestions in RFC2988 of using scaled variants for SRTT/RTTVAR. That code is replaced by the present patch, which reuses the Linux TCP RTT estimator code. Further details: ---------------- 1. The minimum RTO of previously one second has been replaced with TCP's, since RFC4341, sec. 5 says that the minimum of 1 sec. (suggested in RFC2988, 2.4) is not necessary. Instead, the TCP_RTO_MIN is used, which agrees with DCCP's concept of a default RTT (RFC 4340, 3.4). 2. The maximum RTO has been set to DCCP_RTO_MAX (64 sec), which agrees with RFC2988, (2.5). 3. De-inlined the function ccid2_new_ack(). 4. Added a FIXME: the RTT is sampled several times per Ack Vector, which will give the wrong estimate. It should be replaced with one sample per Ack. However, at the moment this can not be resolved easily, since - it depends on TX history code (which also needs some work), - the cleanest solution is not to use the `sent' time at all (saves 4 bytes per entry) and use DCCP timestamps / elapsed time to estimated the RTT, which however is non-trivial to get right (but needs to be done). Reasons for reusing the Linux TCP estimator algorithm: ------------------------------------------------------ Some time was spent to find a better alternative, using basic RFC2988 as a first step. Further analysis and experimentation showed that the Linux TCP RTO estimator is superior to a basic RFC2988 implementation. A summary is on http://www.erg.abdn.ac.uk/users/gerrit/dccp/notes/ccid2/rto_estimator/ In addition, this estimator fared well in a recent empirical evaluation: Rewaskar, Sushant, Jasleen Kaur and F. Donelson Smith. A Performance Study of Loss Detection/Recovery in Real-world TCP Implementations. Proceedings of 15th IEEE International Conference on Network Protocols (ICNP-07), 2007. Thus there is significant benefit in reusing the existing TCP code. Signed-off-by:Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by:
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Gerrit Renker authored
This removes the dec_pipe function and improves the way the RTO timer is rearmed when a new acknowledgment comes in. Details and justification for removal: -------------------------------------- 1) The BUG_ON in dec_pipe is never triggered: pipe is only decremented for TX history entries between tail and head, for which it had previously been incremented in tx_packet_sent; and it is not decremented twice for the same entry, since it is - either decremented when a corresponding Ack Vector cell in state 0 or 1 was received (and then ccid2s_acked==1), - or it is decremented when ccid2s_acked==0, as part of the loss detection in tx_packet_recv (and hence it can not have been decremented earlier). 2) Restarting the RTO timer happens for every single entry in each Ack Vector parsed by tx_packet_recv (according to RFC 4340, 11.4 this can happen up to 16192 times per Ack Vector). 3) The RTO timer should not be restarted when all outstanding data has been acknowledged. This is currently done similar to (2), in dec_pipe, when pipe has reached 0. The patch onsolidates the code which rearms the RTO timer, combining the segments from new_ack and dec_pipe. As a result, the code becomes clearer (compare with tcp_rearm_rto()). Signed-off-by: -
Gerrit Renker authored
This removes the ccid2_hc_tx_check_sanity function: it is redundant. Details: The tx_check_sanity function performs three tests: 1) it checks that the circular TX list is sorted - in ascending order of sequence number (ccid2s_seq) - and time (ccid2s_sent), - in the direction from `tail' (hctx_seqt) to `head' (hctx_seqh); 2) it ensures that the entire list has the length seqbufc * CCID2_SEQBUF_LEN; 3) it ensures that pipe equals the number of packets that were not marked `acked' (ccid2s_acked) between `tail' and `head'. The following argues that each of these tests is redundant, this can be verified by going through the code. (1) is not necessary, since both time and GSS increase from one packet to the next, so that subsequent insertions in tx_packet_sent (which advance the `head' pointer) will be in ascending order of time and sequence number. In (2), the length of the list is always equal to seqbufc times CCID2_SEQBUF_LEN (set to 1024) unless allocation caused an earlier failure, because: * at initialisation (tx_init), there is one chunk of size 1024 and seqbufc=1; * subsequent calls to tx_alloc_seq take place whenever head->next == tail in tx_packet_sent; then a new chunk of size 1024 is inserted between head and tail, and seqbufc is incremented by one. To show that (3) is redundant requires looking at two cases. The `pipe' variable of the TX socket is incremented only in tx_packet_sent, and decremented in tx_packet_recv. When head == tail (TX history empty) then pipe should be 0, which is the case directly after initialisation and after a retransmission timeout has occurred (ccid2_hc_tx_rto_expire). The first case involves parsing Ack Vectors for packets recorded in the live portion of the buffer, between tail and head. For each packet marked by the receiver as received (state 0) or ECN-marked (state 1), pipe is decremented by one, so for all such packets the BUG_ON in tx_check_sanity will not trigger. The second case is the loss detection in the second half of tx_packet_recv, below the comment "Check for NUMDUPACK". The first while-loop here ensures that the sequence number of `seqp' is either above or equal to `high_ack', or otherwise equal to the highest sequence number sent so far (of the entry head->prev, as head points to the next unsent entry). The next while-loop ("while (1)") counts the number of acked packets starting from that position of seqp, going backwards in the direction from head->prev to tail. If NUMDUPACK=3 such packets were counted within this loop, `seqp' points to the last acknowledged packet of these, and the "if (done == NUMDUPACK)" block is entered next. The while-loop contained within that block in turn traverses the list backwards, from head to tail; the position of `seqp' is saved in the variable `last_acked'. For each packet not marked as `acked', a congestion event is triggered within the loop, and pipe is decremented. The loop terminates when `seqp' has reached `tail', whereupon tail is set to the position previously stored in `last_acked'. Thus, between `last_acked' and the previous position of `tail', - pipe has been decremented earlier if the packet was marked as state 0 or 1; - pipe was decremented if the packet was not marked as acked. That is, pipe has been decremented by the number of packets between `last_acked' and the previous position of `tail'. As a consequence, pipe now again reflects the number of packets which have not (yet) been acked between the new position of tail (at `last_acked') and head->prev, or 0 if head==tail. The result is that the BUG_ON condition in check_sanity will also not be triggered, hence the test (3) is also redundant. Signed-off-by: -
Gerrit Renker authored
The CCIDs are activated as last of the features, at the end of the handshake, were the LISTEN state of the master socket is inherited into the server state of the child socket. Thus, the only states visible to CCIDs now are OPEN/PARTOPEN, and the closing states. This allows to remove tests which were previously necessary to protect against referencing a socket in the listening state (in CCID-3), but which now have become redundant. As a further byproduct of enabling the CCIDs only after the connection has been fully established, several typecast-initialisations of ccid3_hc_{rx,tx}_sock can now be eliminated: * the CCID is loaded, so it is not necessary to test if it is NULL, * if it is possible to load a CCID and leave the private area NULL, then this is a bug, which should crash loudly - and earlier, * the test for state==OPEN || state==PARTOPEN now reduces only to the closing phase (e.g. when the node has received an unexpected Reset). Signed-off-by:Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by:
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Gerrit Renker authored
This patch collects cosmetics-only changes to separate these from code changes: * update with regard to CodingStyle and whitespace changes, * documentation: - adding/revising comments, - remove CCID-3 RX socket documentation which is either duplicate or refers to fields that no longer exist, * expand embedded tfrc_tx_info struct inline for consistency, removing indirections via #define. Signed-off-by:
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- 23 Aug, 2010 5 commits
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David S. Miller authored
SKBs can be "fragmented" in two ways, via a page array (called skb_shinfo(skb)->frags[]) and via a list of SKBs (called skb_shinfo(skb)->frag_list). Since skb_has_frags() tests the latter, it's name is confusing since it sounds more like it's testing the former. Signed-off-by: -
David S. Miller authored
Conflicts: include/linux/if_pppox.h Fix conflict between Changli's __packed header file fixes and the new PPTP driver. Signed-off-by: -
Amerigo Wang authored
As suggested by David, this parameter can die, we can use ethtool to turn LRO on/off. Compile tests only. Signed-off-by:
WANG Cong <amwang@redhat.com> Signed-off-by:
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Ian Campbell authored
All Xen frontend drivers have a couple of identically named functions which makes figuring out which device went wrong from a stacktrace harder than it needs to be. Rename them to something specificto the device type. Signed-off-by:
Ian Campbell <ian.campbell@citrix.com> Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by:
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Hagen Paul Pfeifer authored
Via setsockopt it is possible to reduce the socket RX buffer (SO_RCVBUF). TCP method to select the initial window and window scaling option in tcp_select_initial_window() currently misbehaves and do not consider a reduced RX socket buffer via setsockopt. Even though the server's RX buffer is reduced via setsockopt() to 256 byte (Initial Window 384 byte => 256 * 2 - (256 * 2 / 4)) the window scale option is still 7: 192.168.1.38.40676 > 78.47.222.210.5001: Flags [S], seq 2577214362, win 5840, options [mss 1460,sackOK,TS val 338417 ecr 0,nop,wscale 0], length 0 78.47.222.210.5001 > 192.168.1.38.40676: Flags [S.], seq 1570631029, ack 2577214363, win 384, options [mss 1452,sackOK,TS val 2435248895 ecr 338417,nop,wscale 7], length 0 192.168.1.38.40676 > 78.47.222.210.5001: Flags [.], ack 1, win 5840, options [nop,nop,TS val 338421 ecr 2435248895], length 0 Within tcp_select_initial_window() the original space argument - a representation of the rx buffer size - is expanded during tcp_select_initial_window(). Only sysctl_tcp_rmem[2], sysctl_rmem_max and window_clamp are considered to calculate the initial window. This patch adjust the window_clamp argument if the user explicitly reduce the receive buffer. Signed-off-by:
Hagen Paul Pfeifer <hagen@jauu.net> Cc: David S. Miller <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by:
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