- 04 5月, 2015 31 次提交
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由 françois romieu 提交于
Rationales: - throttle work under memory pressure - lower receive descriptor recycling latency for the network adapter - lower the maintenance burden of uncommon paths The patch is twofold: - it fails early if the receive ring can't be completely initialized at dev->open() time - it drops packets on the floor in the napi receive handler so as to keep the received ring full Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 françois romieu 提交于
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 françois romieu 提交于
It's used to initialize the receive ring but it will actually shine when the receive poll code is reworked. Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 françois romieu 提交于
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Tom Herbert says: ==================== net: Eliminate calls to flow_dissector and introduce flow_keys_digest In this patch set we add skb_get_hash_perturb which gets the skbuff hash for a packet and perturbs it using a provided key and jhash1. This function is used in serveral qdiscs and eliminates many calls to flow_dissector and jhash3 to get a perturbed hash for a packet. To handle the sch_choke issue (passes flow_keys in skbuff cb) we add flow_keys_digest which is a digest of a flow constructed from a flow_keys structure. This is the second version of these patches I posted a while ago, and is prerequisite work to increasing the size of the flow_keys structure and hashing over it (full IPv6 address, flow label, VLAN ID, etc.). Version 2: - Add keyval parameter to __flow_hash_from_keys which allows caller to set the initval for jhash - Perturb always does flow dissection and creates hash based on input perturb value which acts as the keyval to __flow_hash_from_keys - Added a _flow_keys_digest_data which is used in make_flow_keys_digest. This fills out the digest by populating individual fields instead of copying the whole structure. ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tom Herbert 提交于
Call make_flow_keys_digest to get a digest from flow keys and use that to pass skbuff cb and for comparing flows. Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tom Herbert 提交于
Some users of flow keys (well just sch_choke now) need to pass flow_keys in skbuff cb, and use them for exact comparisons of flows so that skb->hash is not sufficient. In order to increase size of the flow_keys structure, we introduce another structure for the purpose of passing flow keys in skbuff cb. We limit this structure to sixteen bytes, and we will technically treat this as a digest of flow_keys struct hence its name flow_keys_digest. In the first incaranation we just copy the flow_keys structure up to 16 bytes-- this is the same information previously passed in the cb. In the future, we'll adapt this for larger flow_keys and could use something like SHA-1 over the whole flow_keys to improve the quality of the digest. Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tom Herbert 提交于
Call skb_get_hash_perturb instead of doing skb_flow_dissect and then jhash by hand. Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tom Herbert 提交于
Call skb_get_hash_perturb instead of doing skb_flow_dissect and then jhash by hand. Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tom Herbert 提交于
Call skb_get_hash_perturb instead of doing skb_flow_dissect and then jhash by hand. Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tom Herbert 提交于
Call skb_get_hash_perturb instead of doing skb_flow_dissect and then jhash by hand. Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tom Herbert 提交于
This calls flow_disect and __skb_get_hash to procure a hash for a packet. Input includes a key to initialize jhash. This function does not set skb->hash. Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Andrew Lunn 提交于
In setups with a global scope address on an interface, and a lesser scope address on an interface sending IGMP reports, the reports can be sent using the other interfaces global scope address rather than the local interface address. RFC 2236 suggests: Ignore the Report if you cannot identify the source address of the packet as belonging to a subnet assigned to the interface on which the packet was received. since such reports could be forged. Look at the protocol when deciding if a RT_SCOPE_LINK address should be used for the packet. Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Alexei Starovoitov 提交于
TC classifiers/actions were converted to RCU by John in the series: http://thread.gmane.org/gmane.linux.network/329739/focus=329739 and many follow on patches. This is the last patch from that series that finally drops ingress spin_lock. Single cpu ingress+u32 performance goes from 22.9 Mpps to 24.5 Mpps. In two cpu case when both cores are receiving traffic on the same device and go into the same ingress+u32 the performance jumps from 4.5 + 4.5 Mpps to 23.5 + 23.5 Mpps Signed-off-by: NJohn Fastabend <john.r.fastabend@intel.com> Signed-off-by: NAlexei Starovoitov <ast@plumgrid.com> Signed-off-by: NJamal Hadi Salim <jhs@mojatatu.com> Acked-by: NDaniel Borkmann <daniel@iogearbox.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Kenneth Klette Jonassen says: ==================== tcp: SACK RTTM changes for congestion control This patch series improves SACK RTT measurements for congestion control: o Picks the latest sequence SACKed for RTT, i.e. most accurate delay signal. o Calls the congestion control's pkts_acked hook with SACK RTTMs even when not sequentially ACKing new data. V2: amend misleading comment ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Kenneth Klette Jonassen 提交于
Invoking pkts_acked is currently conditioned on FLAG_ACKED: receiving a cumulative ACK of new data, or ACK with SYN flag set. Remove this condition so that CC may get RTT measurements from all SACKs. Cc: Yuchung Cheng <ycheng@google.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Neal Cardwell <ncardwell@google.com> Signed-off-by: NKenneth Klette Jonassen <kennetkl@ifi.uio.no> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Kenneth Klette Jonassen 提交于
tcp_sacktag_one() always picks the earliest sequence SACKed for RTT. This might not make sense for congestion control in cases where: 1. ACKs are lost, i.e. a SACK following a lost SACK covers both new and old segments at the receiver. 2. The receiver disregards the RFC 5681 recommendation to immediately ACK out-of-order segments. Give congestion control a RTT for the latest segment SACKed, which is the most accurate RTT estimate, but preserve the conservative RTT for RTO. Removes the call to skb_mstamp_get() in tcp_sacktag_one(). Cc: Yuchung Cheng <ycheng@google.com> Cc: Eric Dumazet <edumazet@google.com> Signed-off-by: NKenneth Klette Jonassen <kennetkl@ifi.uio.no> Acked-by: NYuchung Cheng <ycheng@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Kenneth Klette Jonassen 提交于
Later patch passes two values set in tcp_sacktag_one() to tcp_clean_rtx_queue(). Prepare passing them via struct tcp_sacktag_state. Acked-by: NYuchung Cheng <ycheng@google.com> Cc: Eric Dumazet <edumazet@google.com> Signed-off-by: NKenneth Klette Jonassen <kennetkl@ifi.uio.no> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Thomas Graf says: ==================== rhashtable self-test improvements This series improves the rhashtable self-test to: * Avoid allocation of test objects * Measure the time of test runs * Use the iterator to walk the table for consistency * Account for failed insertions due to memory pressure or utilization pressure * Ignore failed insertions when checking for consistency ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Thomas Graf 提交于
Account for failed inserts due to memory pressure or EBUSY and ignore failed entries during the consistency check. Signed-off-by: NThomas Graf <tgraf@suug.ch> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Thomas Graf 提交于
As resizes may continue to run in the background, use walker to ensure we see all entries. Also print the encountered number of rehashes queued up while traversing. This may lead to warnings due to entries being seen multiple times. We consider them non-fatal. Signed-off-by: NThomas Graf <tgraf@suug.ch> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Thomas Graf 提交于
By far the most expensive part of the selftest was the allocation of entries. Using a static array allows to measure the rhashtable operations. Signed-off-by: NThomas Graf <tgraf@suug.ch> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Thomas Graf 提交于
This only blows up the size of the test structure for no gain in test coverage. Reduces size of test_obj from 24 to 16 bytes. Signed-off-by: NThomas Graf <tgraf@suug.ch> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Thomas Graf 提交于
Make test configurable by allowing to specify all relevant knobs through module parameters. Do several test runs and measure the average time it takes to insert & remove all entries. Note, a deferred resize might still continue to run in the background. Signed-off-by: NThomas Graf <tgraf@suug.ch> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Thomas Graf 提交于
Signed-off-by: NThomas Graf <tgraf@suug.ch> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Alexander Duyck says: ==================== A few minor clean-ups to eth_type_trans This series addresses a few minor issues I found in eth_type_trans that that allow us to gain back something like 3 or more cycles per packet. The first change is to drop the byte swap since it isn't necessary. On x86 we could just check the first byte and compare that against the upper 8 bits of the Ethertype to determine if we are dealing with a size value or not. The second makes it so that the value we read in to test for multicast can be used for the address comparison. This allows us to avoid a second read of the destination address. The final change is to avoid some unneeded instructions in computing the Ethernet header pointer. When we start the call the Ethernet header is at skb->data, so we just use that rather than computing mac_header, and then adding that back to skb->head. ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Alexander Duyck 提交于
Avoid recomputing the Ethernet header location and instead just use the pointer provided by skb->data. The problem with using eth_hdr is that the compiler wasn't smart enough to realize that skb->head + skb->mac_header was the same thing as skb->data before it added ETH_HLEN. By just caching it off before calling skb_pull_inline we can avoid a few unnecessary instructions. Signed-off-by: NAlexander Duyck <alexander.h.duyck@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Alexander Duyck 提交于
This change makes it so that we process the address in is_multicast_ether_addr at the same size as the other calls. This allows us to avoid duplicate reads when used with other calls such as is_zero_ether_addr or eth_addr_copy. In addition I have added a 64 bit version of the function so in eth_type_trans we can process the destination address as a 64 bit value throughout. Signed-off-by: NAlexander Duyck <alexander.h.duyck@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Alexander Duyck 提交于
This change takes advantage of the fact that ETH_P_802_3_MIN is aligned to 512 so as a result we can actually ignore the lower 8b when comparing the Ethertype to ETH_P_802_3_MIN. This allows us to avoid a byte swap by simply masking the value and comparing it to the byte swapped value for ETH_P_802_3_MIN. Signed-off-by: NAlexander Duyck <alexander.h.duyck@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tom Herbert 提交于
This patch divides the IPv6 flow label space into two ranges: 0-7ffff is reserved for flow label manager, 80000-fffff will be used for creating auto flow labels (per RFC6438). This only affects how labels are set on transmit, it does not affect receive. This range split can be disbaled by systcl. Background: IPv6 flow labels have been an unmitigated disappointment thus far in the lifetime of IPv6. Support in HW devices to use them for ECMP is lacking, and OSes don't turn them on by default. If we had these we could get much better hashing in IPv6 networks without resorting to DPI, possibly eliminating some of the motivations to to define new encaps in UDP just for getting ECMP. Unfortunately, the initial specfications of IPv6 did not clarify how they are to be used. There has always been a vague concept that these can be used for ECMP, flow hashing, etc. and we do now have a good standard how to this in RFC6438. The problem is that flow labels can be either stateful or stateless (as in RFC6438), and we are presented with the possibility that a stateless label may collide with a stateful one. Attempts to split the flow label space were rejected in IETF. When we added support in Linux for RFC6438, we could not turn on flow labels by default due to this conflict. This patch splits the flow label space and should give us a path to enabling auto flow labels by default for all IPv6 packets. This is an API change so we need to consider compatibility with existing deployment. The stateful range is chosen to be the lower values in hopes that most uses would have chosen small numbers. Once we resolve the stateless/stateful issue, we can proceed to look at enabling RFC6438 flow labels by default (starting with scaled testing). Signed-off-by: NTom Herbert <tom@herbertland.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Martin KaFai Lau 提交于
In my earlier commit: 653437d0 ("ipv6: Stop /128 route from disappearing after pmtu update"), there was a horrible typo. Instead of checking RTF_LOCAL on rt->rt6i_flags, it was checked on rt->dst.flags. This patch fixes it. Signed-off-by: NMartin KaFai Lau <kafai@fb.com> Cc: Hajime Tazaki <tazaki@sfc.wide.ad.jp> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 03 5月, 2015 3 次提交
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由 Florian Westphal 提交于
Not used. pedit sets TC_MUNGED when packet content was altered, but all the core does is unset MUNGED again and then set OK2MUNGE. And the latter isn't tested anywhere. So lets remove both TC_MUNGED and TC_OK2MUNGE. Signed-off-by: NFlorian Westphal <fw@strlen.de> Acked-by: NAlexei Starovoitov <ast@plumgrid.com> Acked-by: NDaniel Borkmann <daniel@iogearbox.net> Acked-by: NJamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Li RongQing 提交于
The whole hlist will be moved, so not need to call hlist_del before add the hlist_node to other hlist_head. Signed-off-by: NLi RongQing <roy.qing.li@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net由 David S. Miller 提交于
Merge net into net-next. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 02 5月, 2015 6 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net由 Linus Torvalds 提交于
Pull networking fixes from David Miller: 1) Receive packet length needs to be adjust by 2 on RX to accomodate the two padding bytes in altera_tse driver. From Vlastimil Setka. 2) If rx frame is dropped due to out of memory in macb driver, we leave the receive ring descriptors in an undefined state. From Punnaiah Choudary Kalluri 3) Some netlink subsystems erroneously signal NLM_F_MULTI. That is only for dumps. Fix from Nicolas Dichtel. 4) Fix mis-use of raw rt->rt_pmtu value in ipv4, one must always go via the ipv4_mtu() helper. From Herbert Xu. 5) Fix null deref in bridge netfilter, and miscalculated lengths in jump/goto nf_tables verdicts. From Florian Westphal. 6) Unhash ping sockets properly. 7) Software implementation of BPF divide did 64/32 rather than 64/64 bit divide. The JITs got it right. Fix from Alexei Starovoitov. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (30 commits) ipv4: Missing sk_nulls_node_init() in ping_unhash(). net: fec: Fix RGMII-ID mode net/mlx4_en: Schedule napi when RX buffers allocation fails netxen_nic: use spin_[un]lock_bh around tx_clean_lock net/mlx4_core: Fix unaligned accesses mlx4_en: Use correct loop cursor in error path. cxgb4: Fix MC1 memory offset calculation bnx2x: Delay during kdump load net: Fix Kernel Panic in bonding driver debugfs file: rlb_hash_table net: dsa: Fix scope of eeprom-length property net: macb: Fix race condition in driver when Rx frame is dropped hv_netvsc: Fix a bug in netvsc_start_xmit() altera_tse: Correct rx packet length mlx4: Fix tx ring affinity_mask creation tipc: fix problem with parallel link synchronization mechanism tipc: remove wrong use of NLM_F_MULTI bridge/nl: remove wrong use of NLM_F_MULTI bridge/mdb: remove wrong use of NLM_F_MULTI net: sched: act_connmark: don't zap skb->nfct trivial: net: systemport: bcmsysport.h: fix 0x0x prefix ...
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由 Stefan Hajnoczi 提交于
Here the "other side" refers to the guest or host. Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Rusty Russell 提交于
With my job change kernel work will be "own time"; I'm keeping lguest and modules (and the virtio standards work), but virtio kernel has to go. This makes it clear that Michael is in charge. He's good, but having me watch over his shoulder won't help. Good luck Michael! Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client由 Linus Torvalds 提交于
Pull Ceph RBD fix from Sage Weil. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: rbd: end I/O the entire obj_request on error
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由 David S. Miller 提交于
If we don't do that, then the poison value is left in the ->pprev backlink. This can cause crashes if we do a disconnect, followed by a connect(). Tested-by: NLinus Torvalds <torvalds@linux-foundation.org> Reported-by: NWen Xu <hotdog3645@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Simon Horman 提交于
A small cleanup to make use of the ether_addr_equal helper. Signed-off-by: NSimon Horman <simon.horman@netronome.com> Acked-by: NScott Feldman <sfeldma@gmail.com> Acked-by: NJiri Pirko <jiri@resnulli.us> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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