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2017-11-09net: dsa: add find port by node helperVivien Didelot
Instead of having two dsa_ds_find_port_dn (which returns a bool) and dsa_dst_find_port_dn (which returns a switch) functions, provide a more explicit dsa_tree_find_port_by_node function which returns a matching port. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-09net: dsa: setup and teardown portsVivien Didelot
The dsa_dsa_port_apply and dsa_cpu_port_apply functions do exactly the same. The dsa_user_port_apply function does not try to register a fixed link but try to create a slave. This commit factorizes and scopes all that in two convenient dsa_port_setup and dsa_port_teardown functions. It won't hurt to register a devlink_port for unused port as well. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-09net: dsa: setup and teardown switchesVivien Didelot
This patches brings no functional changes. It removes the unused dst argument from the dsa_ds_apply and dsa_ds_unapply functions, rename them to dsa_switch_setup and dsa_switch_teardown for a more explicit scope. This clarifies the steps of the setup or teardown of a switch fabric. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-09net: dsa: setup and teardown treeVivien Didelot
This commit provides better scope for the DSA tree setup and teardown functions. It renames the "applied" bool to "setup" and print a message when the tree is setup, as it is done during teardown. At the same time, check dst->setup in dsa_tree_setup, where it is set to true. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-09net: dsa: setup and teardown master deviceVivien Didelot
Add DSA helpers to setup and teardown a master net device wired to its CPU port. This centralizes the dsa_ptr assignment. This also makes the master ethtool helpers static at the same time. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-09net: dsa: setup and teardown default CPU portVivien Didelot
The dsa_dst_parse function called just before dsa_dst_apply does not parse the tree but does only one thing: it assigns the default CPU port to dst->cpu_dp and to each user ports. This patch simplifies this by calling a dsa_tree_setup_default_cpu function at the beginning of dsa_dst_apply directly. A dsa_port_is_user helper is added for convenience. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-09net: dsa: constify cpu_dp member of dsa_portVivien Didelot
A DSA port has a dedicated CPU port assigned to it, stored in the cpu_dp member. It is not meant to be modified by a port, thus make it const. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-08openvswitch: enable NSH supportYi Yang
v16->17 - Fixed disputed check code: keep them in nsh_push and nsh_pop but also add them in __ovs_nla_copy_actions v15->v16 - Add csum recalculation for nsh_push, nsh_pop and set_nsh pointed out by Pravin - Move nsh key into the union with ipv4 and ipv6 and add check for nsh key in match_validate pointed out by Pravin - Add nsh check in validate_set and __ovs_nla_copy_actions v14->v15 - Check size in nsh_hdr_from_nlattr - Fixed four small issues pointed out By Jiri and Eric v13->v14 - Rename skb_push_nsh to nsh_push per Dave's comment - Rename skb_pop_nsh to nsh_pop per Dave's comment v12->v13 - Fix NSH header length check in set_nsh v11->v12 - Fix missing changes old comments pointed out - Fix new comments for v11 v10->v11 - Fix the left three disputable comments for v9 but not fixed in v10. v9->v10 - Change struct ovs_key_nsh to struct ovs_nsh_key_base base; __be32 context[NSH_MD1_CONTEXT_SIZE]; - Fix new comments for v9 v8->v9 - Fix build error reported by daily intel build because nsh module isn't selected by openvswitch v7->v8 - Rework nested value and mask for OVS_KEY_ATTR_NSH - Change pop_nsh to adapt to nsh kernel module - Fix many issues per comments from Jiri Benc v6->v7 - Remove NSH GSO patches in v6 because Jiri Benc reworked it as another patch series and they have been merged. - Change it to adapt to nsh kernel module added by NSH GSO patch series v5->v6 - Fix the rest comments for v4. - Add NSH GSO support for VxLAN-gpe + NSH and Eth + NSH. v4->v5 - Fix many comments by Jiri Benc and Eric Garver for v4. v3->v4 - Add new NSH match field ttl - Update NSH header to the latest format which will be final format and won't change per its author's confirmation. - Fix comments for v3. v2->v3 - Change OVS_KEY_ATTR_NSH to nested key to handle length-fixed attributes and length-variable attriubte more flexibly. - Remove struct ovs_action_push_nsh completely - Add code to handle nested attribute for SET_MASKED - Change PUSH_NSH to use the nested OVS_KEY_ATTR_NSH to transfer NSH header data. - Fix comments and coding style issues by Jiri and Eric v1->v2 - Change encap_nsh and decap_nsh to push_nsh and pop_nsh - Dynamically allocate struct ovs_action_push_nsh for length-variable metadata. OVS master and 2.8 branch has merged NSH userspace patch series, this patch is to enable NSH support in kernel data path in order that OVS can support NSH in compat mode by porting this. Signed-off-by: Yi Yang <yi.y.yang@intel.com> Acked-by: Jiri Benc <jbenc@redhat.com> Acked-by: Eric Garver <e@erig.me> Acked-by: Pravin Shelar <pshelar@ovn.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-08pktgen: document 32-bit timestamp overflowArnd Bergmann
Timestamps in pktgen are currently retrieved using the deprecated do_gettimeofday() function that wraps its signed 32-bit seconds in 2038 (on 32-bit architectures) and requires a division operation to calculate microseconds. The pktgen header is also defined with the same limitations, hardcoding to a 32-bit seconds field that can be interpreted as unsigned to produce times that only wrap in 2106. Whatever code reads the timestamps should be aware of that problem in general, but probably doesn't care too much as we are mostly interested in the time passing between packets, and that is correctly represented. Using 64-bit nanoseconds would be cheaper and good for 584 years. Using monotonic times would also make this unambiguous by avoiding the overflow, but would make it harder to correlate to the times with those on remote machines. Either approach would require adding a new runtime flag and implementing the same thing on the remote side, which we probably don't want to do unless someone sees it as a real problem. Also, this should be coordinated with other pktgen implementations and might need a new magic number. For the moment, I'm documenting the overflow in the source code, and changing the implementation over to an open-coded ktime_get_real_ts64() plus division, so we don't have to look at it again while scanning for deprecated time interfaces. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-nextDavid S. Miller
Pablo Neira Ayuso says: ==================== Netfilter/IPVS updates for net-next The following patchset contains Netfilter/IPVS updates for your net-next tree, they are: 1) Speed up table replacement on busy systems with large tables (and many cores) in x_tables. Now xt_replace_table() synchronizes by itself by waiting until all cpus had an even seqcount and we use no use seqlock when fetching old counters, from Florian Westphal. 2) Add nf_l4proto_log_invalid() and nf_ct_l4proto_log_invalid() to speed up packet processing in the fast path when logging is not enabled, from Florian Westphal. 3) Precompute masked address from configuration plane in xt_connlimit, from Florian. 4) Don't use explicit size for set selection if performance set policy is selected. 5) Allow to get elements from an existing set in nf_tables. 6) Fix incorrect check in nft_hash_deactivate(), from Florian. 7) Cache netlink attribute size result in l4proto->nla_size, from Florian. 8) Handle NFPROTO_INET in nf_ct_netns_get() from conntrack core. 9) Use power efficient workqueue in conntrack garbage collector, from Vincent Guittot. 10) Remove unnecessary parameter, in conntrack l4proto functions, also from Florian. 11) Constify struct nf_conntrack_l3proto definitions, from Florian. 12) Remove all typedefs in nf_conntrack_h323 via coccinelle semantic patch, from Harsha Sharma. 13) Don't store address in the rbtree nodes in xt_connlimit, they are never used, from Florian. 14) Fix out of bound access in the conntrack h323 helper, patch from Eric Sesterhenn. 15) Print symbols for the address returned with %pS in IPVS, from Helge Deller. 16) Proc output should only display its own netns in IPVS, from KUWAZAWA Takuya. 17) Small clean up in size_entry_mwt(), from Colin Ian King. 18) Use test_and_clear_bit from nf_nat_proto_clean() instead of separated non-atomic test and then clear bit, from Florian Westphal. 19) Consolidate prefix length maps in ipset, from Aaron Conole. 20) Fix sparse warnings in ipset, from Jozsef Kadlecsik. 21) Simplify list_set_memsize(), from simran singhal. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-08rtnetlink: fix missing size for IFLA_IF_NETNSIDColin Ian King
The size for IFLA_IF_NETNSID is missing from the size calculation because the proceeding semicolon was not removed. Fix this by removing the semicolon. Detected by CoverityScan, CID#1461135 ("Structurally dead code") Fixes: 79e1ad148c84 ("rtnetlink: use netnsid to query interface") Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-08net: dsa: lan9303: Adjust indentingEgil Hjelmeland
Remove scripts/checkpatch.pl CHECKs by adjusting indenting. Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-08net_sch: cbs: Change TC_SETUP_CBS to TC_SETUP_QDISC_CBSNogah Frankel
Change TC_SETUP_CBS to TC_SETUP_QDISC_CBS to match the new convention.. Signed-off-by: Nogah Frankel <nogahf@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-08net_sch: mqprio: Change TC_SETUP_MQPRIO to TC_SETUP_QDISC_MQPRIONogah Frankel
Change TC_SETUP_MQPRIO to TC_SETUP_QDISC_MQPRIO to match the new convention. Signed-off-by: Nogah Frankel <nogahf@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-08net_sch: red: Add offload ability to RED qdiscNogah Frankel
Add the ability to offload RED qdisc by using ndo_setup_tc. There are four commands for RED offloading: * TC_RED_SET: handles set and change. * TC_RED_DESTROY: handle qdisc destroy. * TC_RED_STATS: update the qdiscs counters (given as reference) * TC_RED_XSTAT: returns red xstats. Whether RED is being offloaded is being determined every time dump action is being called because parent change of this qdisc could change its offload state but doesn't require any RED function to be called. Signed-off-by: Nogah Frankel <nogahf@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-08ila: Add a hook type for LWT routesTom Herbert
In LWT tunnels both an input and output route method is defined. If both of these are executed in the same path then double translation happens and the effect is not correct. This patch adds a new attribute that indicates the hook type. Two values are defined for route output and route output. ILA translation is only done for the one that is set. The default is to enable ILA on route output. Signed-off-by: Tom Herbert <tom@quantonium.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-08ila: allow configuration of identifier typeTom Herbert
Allow identifier to be explicitly configured for a mapping. This can either be one of the identifier types specified in the ILA draft or a value of ILA_ATYPE_USE_FORMAT which means the identifier type is inferred from the identifier type field. If a value other than ILA_ATYPE_USE_FORMAT is set for a mapping then it is assumed that the identifier type field is not present in an identifier. Signed-off-by: Tom Herbert <tom@quantonium.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-08ila: add checksum neutral map autoTom Herbert
Add checksum neutral auto that performs checksum neutral mapping without using the C-bit. This is enabled by configuration of a mapping. The checksum neutral function has been split into ila_csum_do_neutral_fmt and ila_csum_do_neutral_nofmt. The former handles the C-bit and includes it in the adjustment value. The latter just sets the adjustment value on the locator diff only. Added configuration for checksum neutral map aut in ila_lwt and ila_xlat. Signed-off-by: Tom Herbert <tom@quantonium.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-08ila: cleanup checksum diffTom Herbert
Consolidate computing checksum diff into one function. Add get_csum_diff_iaddr that computes the checksum diff between an address argument and locator being written. get_csum_diff calls this using the destination address in the IP header as the argument. Also moved ila_init_saved_csum to be close to the checksum diff functions. Signed-off-by: Tom Herbert <tom@quantonium.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-07ipv6: addrconf: fix a lockdep splatEric Dumazet
Fixes a case where GFP_ATOMIC allocation must be used instead of GFP_KERNEL one. [ 54.891146] lock_acquire+0xb3/0x2f0 [ 54.891153] ? fs_reclaim_acquire.part.60+0x5/0x30 [ 54.891165] fs_reclaim_acquire.part.60+0x29/0x30 [ 54.891170] ? fs_reclaim_acquire.part.60+0x5/0x30 [ 54.891178] kmem_cache_alloc_trace+0x3f/0x500 [ 54.891186] ? cyc2ns_read_end+0x1e/0x30 [ 54.891196] ipv6_add_addr+0x15a/0xc30 [ 54.891217] ? ipv6_create_tempaddr+0x2ea/0x5d0 [ 54.891223] ipv6_create_tempaddr+0x2ea/0x5d0 [ 54.891238] ? manage_tempaddrs+0x195/0x220 [ 54.891249] ? addrconf_prefix_rcv_add_addr+0x1c0/0x4f0 [ 54.891255] addrconf_prefix_rcv_add_addr+0x1c0/0x4f0 [ 54.891268] addrconf_prefix_rcv+0x2e5/0x9b0 [ 54.891279] ? neigh_update+0x446/0xb90 [ 54.891298] ? ndisc_router_discovery+0x5ab/0xf00 [ 54.891303] ndisc_router_discovery+0x5ab/0xf00 [ 54.891311] ? retint_kernel+0x2d/0x2d [ 54.891331] ndisc_rcv+0x1b6/0x270 [ 54.891340] icmpv6_rcv+0x6aa/0x9f0 [ 54.891345] ? ipv6_chk_mcast_addr+0x176/0x530 [ 54.891351] ? do_csum+0x17b/0x260 [ 54.891360] ip6_input_finish+0x194/0xb20 [ 54.891372] ip6_input+0x5b/0x2c0 [ 54.891380] ? ip6_rcv_finish+0x320/0x320 [ 54.891389] ip6_mc_input+0x15a/0x250 [ 54.891396] ipv6_rcv+0x772/0x1050 [ 54.891403] ? consume_skb+0xbe/0x2d0 [ 54.891412] ? ip6_make_skb+0x2a0/0x2a0 [ 54.891418] ? ip6_input+0x2c0/0x2c0 [ 54.891425] __netif_receive_skb_core+0xa0f/0x1600 [ 54.891436] ? process_backlog+0xac/0x400 [ 54.891441] process_backlog+0xfa/0x400 [ 54.891448] ? net_rx_action+0x145/0x1130 [ 54.891456] net_rx_action+0x310/0x1130 [ 54.891524] ? RTUSBBulkReceive+0x11d/0x190 [mt7610u_sta] [ 54.891538] __do_softirq+0x140/0xaba [ 54.891553] irq_exit+0x10b/0x160 [ 54.891561] do_IRQ+0xbb/0x1b0 Fixes: f3d9832e56c4 ("ipv6: addrconf: cleanup locking in ipv6_add_addr") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Valdis Kletnieks <valdis.kletnieks@vt.edu> Acked-by: David Ahern <dsahern@gmail.com> Tested-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-07netfilter: nf_tables: get set elements via netlinkPablo Neira Ayuso
This patch adds a new get operation to look up for specific elements in a set via netlink interface. You can also use it to check if an interval already exists. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2017-11-07netfilter: nf_tables: performance set policy skips size description in selectionPablo Neira Ayuso
Use the complexity and space notations if policy is performance, this results in placing the bitmap set representation over the hashtable for key <= 16 for better performance as we discussed during the last NFWS in Faro, Portugal. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2017-11-07netfilter: conntrack: use power efficient workqueueVincent Guittot
conntrack uses the bounded system_long_wq workqueue for its works that don't have to run on the cpu they have been queued. Using bounded workqueue prevents the scheduler to make smart decision about the best place to schedule the work. This patch replaces system_long_wq with system_power_efficient_wq. the work stays bounded to a cpu by default unless the CONFIG_WQ_POWER_EFFICIENT is enable. In the latter case, the work can be scheduled on the best cpu from a power or a performance point of view. Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2017-11-06netfilter: conntrack: move nf_ct_netns_{get,put}() to corePablo Neira Ayuso
So we can call this from other expression that need conntrack in place to work. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Acked-by: Florian Westphal <fw@strlen.de>
2017-11-06netfilter: conntrack: don't cache nlattr_tuple_size result in nla_sizeFlorian Westphal
We currently call ->nlattr_tuple_size() once at register time and cache result in l4proto->nla_size. nla_size is the only member that is written to, avoiding this would allow to make l4proto trackers const. We can use ->nlattr_tuple_size() at run time, and cache result in the individual trackers instead. This is an intermediate step, next patch removes nlattr_size() callback and computes size at compile time, then removes nla_size. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2017-11-06netfilter: nft_hash: fix nft_hash_deactivateFlorian Westphal
Jindřich Makovička says: The logical OR looks fishy to me. Shouldn't be && there instead? Link: https://bugzilla.netfilter.org/show_bug.cgi?id=1199 Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2017-11-06netfilter: xt_connlimit: remove mask argumentFlorian Westphal
Instead of passing mask to all the helpers, just fixup the search key early. After rbtree conversion, each rbtree node stores connections of same 'addr & mask', so no need to pass the mask too. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2017-11-06netfilter: ebtables: clean up initialization of bufColin Ian King
buf is initialized to buf_start and then set on the next statement to buf_start + offsets[i]. Clean this up to just initialize buf to buf_start + offsets[i] to clean up the clang build warning: "Value stored to 'buf' during its initialization is never read" Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2017-11-06netfilter: ipvs: Fix inappropriate output of procfsKUWAZAWA Takuya
Information about ipvs in different network namespace can be seen via procfs. How to reproduce: # ip netns add ns01 # ip netns add ns02 # ip netns exec ns01 ip a add dev lo 127.0.0.1/8 # ip netns exec ns02 ip a add dev lo 127.0.0.1/8 # ip netns exec ns01 ipvsadm -A -t 10.1.1.1:80 # ip netns exec ns02 ipvsadm -A -t 10.1.1.2:80 The ipvsadm displays information about its own network namespace only. # ip netns exec ns01 ipvsadm -Ln IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn TCP 10.1.1.1:80 wlc # ip netns exec ns02 ipvsadm -Ln IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn TCP 10.1.1.2:80 wlc But I can see information about other network namespace via procfs. # ip netns exec ns01 cat /proc/net/ip_vs IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn TCP 0A010101:0050 wlc TCP 0A010102:0050 wlc # ip netns exec ns02 cat /proc/net/ip_vs IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn TCP 0A010102:0050 wlc Signed-off-by: KUWAZAWA Takuya <albatross0@gmail.com> Acked-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2017-11-06netfilter: ipvs: Use %pS printk format for direct addressesHelge Deller
The debug and error printk functions in ipvs uses wrongly the %pF instead of the %pS printk format specifier for printing symbols for the address returned by _builtin_return_address(0). Fix it for the ia64, ppc64 and parisc64 architectures. Signed-off-by: Helge Deller <deller@gmx.de> Cc: Wensong Zhang <wensong@linux-vs.org> Cc: netdev@vger.kernel.org Cc: lvs-devel@vger.kernel.org Cc: netfilter-devel@vger.kernel.org Acked-by: Simon Horman <horms@verge.net.au> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2017-11-05tcp: higher throughput under reordering with adaptive RACK reordering wndPriyaranjan Jha
Currently TCP RACK loss detection does not work well if packets are being reordered beyond its static reordering window (min_rtt/4).Under such reordering it may falsely trigger loss recoveries and reduce TCP throughput significantly. This patch improves that by increasing and reducing the reordering window based on DSACK, which is now supported in major TCP implementations. It makes RACK's reo_wnd adaptive based on DSACK and no. of recoveries. - If DSACK is received, increment reo_wnd by min_rtt/4 (upper bounded by srtt), since there is possibility that spurious retransmission was due to reordering delay longer than reo_wnd. - Persist the current reo_wnd value for TCP_RACK_RECOVERY_THRESH (16) no. of successful recoveries (accounts for full DSACK-based loss recovery undo). After that, reset it to default (min_rtt/4). - At max, reo_wnd is incremented only once per rtt. So that the new DSACK on which we are reacting, is due to the spurious retx (approx) after the reo_wnd has been updated last time. - reo_wnd is tracked in terms of steps (of min_rtt/4), rather than absolute value to account for change in rtt. In our internal testing, we observed significant increase in throughput, in scenarios where reordering exceeds min_rtt/4 (previous static value). Signed-off-by: Priyaranjan Jha <priyarjha@google.com> Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05net: dsa: resolve tagging protocol at parse timeVivien Didelot
Extend the dsa_port_parse_cpu() function to resolve the tagging protocol at port parsing time, instead of waiting for the whole tree to be complete. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05net: dsa: add one port parsing function per typeVivien Didelot
Add dsa_port_parse_user, dsa_port_parse_dsa and dsa_port_parse_cpu functions to factorize the code shared by both OF and pdata parsing. They don't do much for the moment but will be extended later to support tagging protocol resolution for example. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05net: dsa: only check presence of link propertyVivien Didelot
When parsing a port, simply use of_property_read_bool which checks the presence of a given property, instead of parsing the link phandle. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05net: dsa: rework switch parsingVivien Didelot
When parsing a switch, we have to identify to which tree it belongs and parse its ports. Provide two functions to separate the OF and platform data specific paths. Also use the of_property_read_variable_u32_array function to parse the OF member array instead of calling of_property_read_u32_index twice. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05net: dsa: get tree before parsing portsVivien Didelot
We will need a reference to the dsa_switch_tree when parsing a CPU port, so fetch it right after parsing the member and before parsing ports. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05net: dsa: rework switch addition and removalVivien Didelot
This patch removes the unnecessary index argument from the dsa_dst_add_ds and dsa_dst_del_ds functions and renames them to dsa_tree_add_switch and dsa_tree_remove_switch respectively. In addition to a more explicit scope, we now check the presence of an existing switch with the same index directly within dsa_tree_add_switch. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05net: dsa: provide a find or new tree helperVivien Didelot
Rename dsa_get_dst to dsa_tree_find since it doesn't increment the reference counter, rename dsa_add_dst to dsa_tree_alloc for symmetry with dsa_tree_free, and provide a convenient dsa_tree_touch function to find or allocate a new tree. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05net: dsa: get and put tree reference countingVivien Didelot
Provide convenient dsa_tree_get and dsa_tree_put functions scoping a DSA tree used to increment and decrement its reference counter, instead of poking directly its kref structure. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05net: dsa: simplify tree reference countingVivien Didelot
DSA trees have a refcount used to automatically free the dsa_switch_tree structure once there is no switch devices inside of it. The refcount is incremented when a switch is added to the tree, and decremented when it is removed from it. But because of kref_init, the refcount is also incremented at initialization, and when looking up the tree from the list for symmetry. Thus the current code stores the number of switches plus one, and makes the switch registration more complex. To simplify the switch registration function, we reset the refcount to zero after initialization and don't increment it when looking up a tree. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05net: dsa: make tree index unsignedVivien Didelot
Similarly to a DSA switch and port, rename the tree index from "tree" to "index" and make it an unsigned int because it isn't supposed to be less than 0. u32 is an OF specific data used to retrieve the value and has no need to be propagated up to the tree index. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05bpf: remove old offload/analyzerJakub Kicinski
Thanks to the ability to load a program for a specific device, running verifier twice is no longer needed. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05cls_bpf: allow attaching programs loaded for specific deviceJakub Kicinski
If TC program is loaded with skip_sw flag, we should allow the device-specific programs to be accepted. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05xdp: allow attaching programs loaded for specific deviceJakub Kicinski
Pass the netdev pointer to bpf_prog_get_type(). This way BPF code can decide whether the device matches what the code was loaded/translated for. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05net: bpf: rename ndo_xdp to ndo_bpfJakub Kicinski
ndo_xdp is a control path callback for setting up XDP in the driver. We can reuse it for other forms of communication between the eBPF stack and the drivers. Rename the callback and associated structures and definitions. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05tcp: do not clear again skb->csum in tcp_init_nondata_skb()Eric Dumazet
tcp_init_nondata_skb() is fed with freshly allocated skbs. They already have a cleared csum field, no need to clear it again. This is based on Neal review on commit 3b11775033dc ("tcp: do not mangle skb->cb[] in tcp_make_synack()"), noticing I did not clear skb->csum. Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05tcp: tcp_mtu_probing() cleanupEric Dumazet
Reduce one indentation level to make code more readable. tcp_sync_mss() can be factorized. Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05rtnetlink: use netnsid to query interfaceJiri Benc
Currently, when an application gets netnsid from the kernel (for example as the result of RTM_GETLINK call on one end of the veth pair), it's not much useful. There's no reliable way to get to the netns fd from the netnsid, nor does any kernel API accept netnsid. Extend the RTM_GETLINK call to also accept netnsid. It will operate on the netns with the given netnsid in such case. Of course, the calling process needs to have enough capabilities in the target name space; for now, require CAP_NET_ADMIN. This can be relaxed in the future. To signal to the calling process that the kernel understood the new IFLA_IF_NETNSID attribute in the query, it will include it in the response. This is needed to detect older kernels, as they will just ignore IFLA_IF_NETNSID and query in the current name space. This patch implemetns IFLA_IF_NETNSID only for get and dump. For set operations, this can be extended later. Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05openvswitch: reliable interface indentification in port dumpsJiri Benc
This patch allows reliable identification of netdevice interfaces connected to openvswitch bridges. In particular, user space queries the netdev interfaces belonging to the ports for statistics, up/down state, etc. Datapath dump needs to provide enough information for the user space to be able to do that. Currently, only interface names are returned. This is not sufficient, as openvswitch allows its ports to be in different name spaces and the interface name is valid only in its name space. What is needed and generally used in other netlink APIs, is the pair ifindex+netnsid. The solution is addition of the ifindex+netnsid pair (or only ifindex if in the same name space) to vport get/dump operation. On request side, ideally the ifindex+netnsid pair could be used to get/set/del the corresponding vport. This is not implemented by this patch and can be added later if needed. Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-05net: export peernet2id_allocJiri Benc
It will be used by openvswitch. Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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