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path: root/drivers/net/geneve.c
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2019-03-02geneve: correctly handle ipv6.disable module parameterJiri Benc1-3/+8
When IPv6 is compiled but disabled at runtime, geneve_sock_add returns -EAFNOSUPPORT. For metadata based tunnels, this causes failure of the whole operation of bringing up the tunnel. Ignore failure of IPv6 socket creation for metadata based tunnels caused by IPv6 not being available. This is the same fix as what commit d074bf960044 ("vxlan: correctly handle ipv6.disable module parameter") is doing for vxlan. Note there's also commit c0a47e44c098 ("geneve: should not call rt6_lookup() when ipv6 was disabled") which fixes a similar issue but for regular tunnels, while this patch is needed for metadata based tunnels. Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-07geneve: should not call rt6_lookup() when ipv6 was disabledHangbin Liu1-3/+7
When we add a new GENEVE device with IPv6 remote, checking only for IS_ENABLED(CONFIG_IPV6) is not enough as we may disable IPv6 in the kernel command line (ipv6.disable=1), and calling rt6_lookup() would cause a NULL pointer dereference. v2: - don't mix declarations and code (reported by Stefano Brivio, Eric Dumazet) - there's no need to use in6_dev_get() as we only need to check that idev exists (reported by David Ahern). This is under RTNL, so we can simply use __in6_dev_get() instead (Stefano, Eric). Reported-by: Jianlin Shi <jishi@redhat.com> Fixes: c40e89fd358e9 ("geneve: configure MTU based on a lower device") Cc: Alexey Kodanev <alexey.kodanev@oracle.com> Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Reviewed-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-18geneve: Initialize addr6 with memsetNathan Chancellor1-1/+3
Clang warns: drivers/net/geneve.c:428:29: error: suggest braces around initialization of subobject [-Werror,-Wmissing-braces] struct in6_addr addr6 = { 0 }; ^ {} Rather than trying to appease the various compilers that support the kernel, use memset, which is unambiguous. Fixes: a07966447f39 ("geneve: ICMP error lookup handler") Suggested-by: David S. Miller <davem@davemloft.net> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-09geneve: Allow configuration of DF behaviourStefano Brivio1-8/+47
draft-ietf-nvo3-geneve-08 says: It is strongly RECOMMENDED that Path MTU Discovery ([RFC1191], [RFC1981]) be used by setting the DF bit in the IP header when Geneve packets are transmitted over IPv4 (this is the default with IPv6). Now that ICMP error handling is working for GENEVE, we can comply with this recommendation. Make this configurable, though, to avoid breaking existing setups. By default, DF won't be set. It can be set or inherited from inner IPv4 packets. If it's configured to be inherited and we are encapsulating IPv6, it will be set. This only applies to non-lwt tunnels: if an external control plane is used, tunnel key will still control the DF flag. v2: - DF behaviour configuration only applies for non-lwt tunnels, apply DF setting only if (!geneve->collect_md) in geneve_xmit_skb() (Stephen Hemminger) Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-09geneve: ICMP error lookup handlerStefano Brivio1-0/+52
Export an encap_err_lookup() operation to match an ICMP error against a valid VNI. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-07net: Add extack argument to rtnl_create_linkDavid Ahern1-1/+1
Add extack arg to rtnl_create_link and add messages for invalid number of Tx or Rx queues. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-19Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-11/+3
net/sched/cls_api.c has overlapping changes to a call to nlmsg_parse(), one (from 'net') added rtm_tca_policy instead of NULL to the 5th argument, and another (from 'net-next') added cb->extack instead of NULL to the 6th argument. net/ipv4/ipmr_base.c is a case of a bug fix in 'net' being done to code which moved (to mr_table_dump)) in 'net-next'. Thanks to David Ahern for the heads up. Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-18geneve, vxlan: Don't set exceptions if skb->len < mtuStefano Brivio1-4/+3
We shouldn't abuse exceptions: if the destination MTU is already higher than what we're transmitting, no exception should be created. Fixes: 52a589d51f10 ("geneve: update skb dst pmtu on tx path") Fixes: a93bf0ff4490 ("vxlan: update skb dst pmtu on tx path") Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-18geneve, vxlan: Don't check skb_dst() twiceStefano Brivio1-11/+4
Commit f15ca723c1eb ("net: don't call update_pmtu unconditionally") avoids that we try updating PMTU for a non-existent destination, but didn't clean up cases where the check was already explicit. Drop those redundant checks. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-04geneve: allow to clear ttl inheritHangbin Liu1-4/+8
As Michal remaind, we should allow to clear ttl inherit. Then we will have three states: 1. set the flag, and do ttl inherit. 2. do not set the flag, use configured ttl value, or default ttl (0) if not set. 3. disable ttl inherit, use previous configured ttl value, or default ttl (0). Fixes: 52d0d404d39dd ("geneve: add ttl inherit support") CC: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-13geneve: add ttl inherit supportHangbin Liu1-8/+33
Similar with commit 72f6d71e491e6 ("vxlan: add ttl inherit support"), currently ttl == 0 means "use whatever default value" on geneve instead of inherit inner ttl. To respect compatibility with old behavior, let's add a new IFLA_GENEVE_TTL_INHERIT for geneve ttl inherit support. Reported-by: Jianlin Shi <jishi@redhat.com> Suggested-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Reviewed-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-03Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-1/+1
Simple overlapping changes in stmmac driver. Adjust skb_gro_flush_final_remcsum function signature to make GRO list changes in net-next, as per Stephen Rothwell's example merge resolution. Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-02net: fix use-after-free in GRO with ESPSabrina Dubroca1-1/+1
Since the addition of GRO for ESP, gro_receive can consume the skb and return -EINPROGRESS. In that case, the lower layer GRO handler cannot touch the skb anymore. Commit 5f114163f2f5 ("net: Add a skb_gro_flush_final helper.") converted some of the gro_receive handlers that can lead to ESP's gro_receive so that they wouldn't access the skb when -EINPROGRESS is returned, but missed other spots, mainly in tunneling protocols. This patch finishes the conversion to using skb_gro_flush_final(), and adds a new helper, skb_gro_flush_final_remcsum(), used in VXLAN and GUE. Fixes: 5f114163f2f5 ("net: Add a skb_gro_flush_final helper.") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Reviewed-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-29net: check tunnel option type in tunnel flagsPieter Jansen van Vuuren1-2/+4
Check the tunnel option type stored in tunnel flags when creating options for tunnels. Thereby ensuring we do not set geneve, vxlan or erspan tunnel options on interfaces that are not associated with them. Make sure all users of the infrastructure set correct flags, for the BPF helper we have to set all bits to keep backward compatibility. Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-26net: Convert GRO SKB handling to list_head.David Miller1-5/+6
Manage pending per-NAPI GRO packets via list_head. Return an SKB pointer from the GRO receive handlers. When GRO receive handlers return non-NULL, it means that this SKB needs to be completed at this time and removed from the NAPI queue. Several operations are greatly simplified by this transformation, especially timing out the oldest SKB in the list when gro_count exceeds MAX_GRO_SKBS, and napi_gro_flush() which walks the queue in reverse order. Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20geneve: configure MTU based on a lower deviceAlexey Kodanev1-3/+53
Currently, on a new link creation or when 'remote' address parameter is updated, an MTU is not changed and always equals 1500. When a lower device has a larger MTU, it might not be efficient, e.g. for UDP, and requires the manual MTU adjustments to match the MTU of the lower device. This patch tries to automate this process, finds a lower device using the 'remote' address parameter, then uses its MTU to tune GENEVE's MTU: * on a new link creation * when 'remote' parameter is changed Also with this patch, the MTU from a user, on a new link creation, is passed to geneve_change_mtu() where it is verified, and MTU adjustments with a lower device is skipped in that case. Prior that change, it was possible to set the invalid MTU values on a new link creation. Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20geneve: check MTU for a minimum in geneve_change_mtu()Alexey Kodanev1-3/+2
geneve_change_mtu() will be used not only as ndo_change_mtu() callback, but also to verify a user specified MTU on a new link creation in the next patch. Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20geneve: cleanup hard coded value for Ethernet header lengthAlexey Kodanev1-4/+5
Use ETH_HLEN instead and introduce two new macros: GENEVE_IPV4_HLEN and GENEVE_IPV6_HLEN that include Ethernet header length, corresponded IP header length and GENEVE_BASE_HLEN. Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20geneve: remove white-space before '#if IS_ENABLED(CONFIG_IPV6)'Alexey Kodanev1-1/+1
Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-2/+2
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-26net: don't call update_pmtu unconditionallyNicolas Dichtel1-2/+2
Some dst_ops (e.g. md_dst_ops)) doesn't set this handler. It may result to: "BUG: unable to handle kernel NULL pointer dereference at (null)" Let's add a helper to check if update_pmtu is available before calling it. Fixes: 52a589d51f10 ("geneve: update skb dst pmtu on tx path") Fixes: a93bf0ff4490 ("vxlan: update skb dst pmtu on tx path") CC: Roman Kapl <code@rkapl.cz> CC: Xin Long <lucien.xin@gmail.com> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-0/+14
2018-01-02geneve: update skb dst pmtu on tx pathXin Long1-0/+14
Commit a93bf0ff4490 ("vxlan: update skb dst pmtu on tx path") has fixed a performance issue caused by the change of lower dev's mtu for vxlan. The same thing needs to be done for geneve as well. Note that geneve cannot adjust it's mtu according to lower dev's mtu when creating it. The performance is very low later when netperfing over it without fixing the mtu manually. This patch could also avoid this issue. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-12-19geneve: speedup geneve tunnels dismantleHaishuang Yan1-8/+16
Since we now hold RTNL lock in geneve_exit_net, it's better batch them to speedup geneve tunnel dismantle. Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-23geneve: only configure or fill UDP_ZERO_CSUM6_RX/TX info when CONFIG_IPV6Hangbin Liu1-1/+15
Stefano pointed that configure or show UDP_ZERO_CSUM6_RX/TX info doesn't make sense if we haven't enabled CONFIG_IPV6. Fix it by adding if IS_ENABLED(CONFIG_IPV6) check. Fixes: abe492b4f50c ("geneve: UDP checksum configuration via netlink") Fixes: fd7eafd02121 ("geneve: fix fill_info when link down") Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Reviewed-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-15geneve: fix fill_info when link downHangbin Liu1-14/+10
geneve->sock4/6 were added with geneve_open and released with geneve_stop. So when geneve link down, we will not able to show remote address and checksum info after commit 11387fe4a98 ("geneve: fix fill_info when using collect_metadata"). Fix this by avoid passing *_REMOTE{,6} for COLLECT_METADATA since they are mutually exclusive, and always show UDP_ZERO_CSUM6_RX info. Fixes: 11387fe4a98 ("geneve: fix fill_info when using collect_metadata") Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-14geneve: exit_net cleanup check addedVasily Averin1-0/+1
Be sure that sock_list initialized in net_init hook was return to initial state. Signed-off-by: Vasily Averin <vvs@virtuozzo.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-6/+0
There were quite a few overlapping sets of changes here. Daniel's bug fix for off-by-ones in the new BPF branch instructions, along with the added allowances for "data_end > ptr + x" forms collided with the metadata additions. Along with those three changes came veritifer test cases, which in their final form I tried to group together properly. If I had just trimmed GIT's conflict tags as-is, this would have split up the meta tests unnecessarily. In the socketmap code, a set of preemption disabling changes overlapped with the rename of bpf_compute_data_end() to bpf_compute_data_pointers(). Changes were made to the mv88e6060.c driver set addr method which got removed in net-next. The hyperv transport socket layer had a locking change in 'net' which overlapped with a change of socket state macro usage in 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-22geneve: Get rid of is_all_zero(), streamline is_tnl_info_zero()Stefano Brivio1-16/+3
No need to re-invent memchr_inv() with !is_all_zero(). While at it, replace conditional and return clauses with a single return clause in is_tnl_info_zero(). Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-21geneve: Fix function matching VNI and tunnel ID on big-endianStefano Brivio1-6/+0
On big-endian machines, functions converting between tunnel ID and VNI use the three LSBs of tunnel ID storage to map VNI. The comparison function eq_tun_id_and_vni(), on the other hand, attempted to map the VNI from the three MSBs. Fix it by using the same check implemented on LE, which maps VNI from the three LSBs of tunnel ID. Fixes: 2e0b26e10352 ("geneve: Optimize geneve device lookup.") Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: Jakub Sitnicki <jkbs@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-11geneve: use netlink_ext_ack for error reporting in rtnl operationsGirish Moodalbail1-36/+92
Add extack error messages for failure paths while creating/modifying geneve devices. Once extack support is added to iproute2, more meaningful and helpful error messages will be displayed making it easy for users to discern what went wrong. Before: ======= $ ip link add gen1 address 0:1:2:3:4:5:6 type geneve id 200 \ remote 192.168.13.2 RTNETLINK answers: Invalid argument After: ====== $ ip link add gen1 address 0:1:2:3:4:5:6 type geneve id 200 \ remote 192.168.13.2 Error: Provided link layer address is not Ethernet Also, netdev_dbg() calls used to log errors associated with Netlink request have been removed. Signed-off-by: Girish Moodalbail <girish.moodalbail@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-1/+1
Mainline had UFO fixes, but UFO is removed in net-next so we take the HEAD hunks. Minor context conflict in bcmsysport statistics bug fix. Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-10geneve: maximum value of VNI cannot be usedGirish Moodalbail1-1/+1
Geneve's Virtual Network Identifier (VNI) is 24 bit long, so the range of values for it would be from 0 to 16777215 (2^24 -1). However, one cannot create a geneve device with VNI set to 16777215. This patch fixes this issue. Signed-off-by: Girish Moodalbail <girish.moodalbail@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-07-24geneve/vxlan: offload ports on register/unregister eventsSabrina Dubroca1-1/+6
This improves consistency of handling when moving a netdev to another netns. Most drivers currently do a full reset when the device goes up, so that will flush the offload state anyway. Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-07-24geneve/vxlan: add support for NETDEV_UDP_TUNNEL_DROP_INFOSabrina Dubroca1-6/+13
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-07-24geneve: add rtnl changelink supportGirish Moodalbail1-42/+176
This patch adds changelink rtnl operation support for geneve devices and the code changes involve: - added geneve_quiesce() which quiesces the geneve device data path for both TX and RX. This lets us perform the changelink operation atomically w.r.t data path. Also added geneve_unquiesce() to reverse the operation of geneve_quiesce(). - refactor geneve_newlink into geneve_nl2info to be used by both geneve_newlink and geneve_changelink - geneve_nl2info takes a changelink boolean argument to isolate changelink checks. - Allow changing only a few attributes (ttl, tos, and remote tunnel endpoint IP address (within the same address family)): - return -EOPNOTSUPP for attributes that cannot be changed for now. Incremental patches can make the non-supported one available in the future if needed. Signed-off-by: Girish Moodalbail <girish.moodalbail@oracle.com> Acked-by: Pravin B Shelar <pshelar@ovn.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-07-03geneve: fix hlist corruptionJiri Benc1-16/+32
It's not a good idea to add the same hlist_node to two different hash lists. This leads to various hard to debug memory corruptions. Fixes: 8ed66f0e8235 ("geneve: implement support for IPv6-based tunnels") Cc: John W. Linville <linville@tuxdriver.com> Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27net: add netlink_ext_ack argument to rtnl_link_ops.validateMatthias Schiffer1-1/+2
Add support for extended error reporting. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Acked-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-27net: add netlink_ext_ack argument to rtnl_link_ops.newlinkMatthias Schiffer1-1/+2
Add support for extended error reporting. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Acked-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16networking: make skb_push & __skb_push return void pointersJohannes Berg1-2/+1
It seems like a historic accident that these return unsigned char *, and in many places that means casts are required, more often than not. Make these functions return void * and remove all the casts across the tree, adding a (u8 *) cast only where the unsigned char pointer was used directly, all done with the following spatch: @@ expression SKB, LEN; typedef u8; identifier fn = { skb_push, __skb_push, skb_push_rcsum }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_push, __skb_push, skb_push_rcsum }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) @@ expression SKB, LEN; identifier fn = { skb_push, __skb_push, skb_push_rcsum }; @@ - fn(SKB, LEN)[0] + *(u8 *)fn(SKB, LEN) Note that the last part there converts from push(...)[0] to the more idiomatic *(u8 *)push(...). Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-1/+1
The conflicts were two cases of overlapping changes in batman-adv and the qed driver. Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-09geneve: add missing rx stats accountingGirish Moodalbail1-12/+24
There are few places on the receive path where packet drops and packet errors were not accounted for. This patch fixes that issue. Signed-off-by: Girish Moodalbail <girish.moodalbail@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-07net: Fix inconsistent teardown and release of private netdev state.David S. Miller1-1/+1
Network devices can allocate reasources and private memory using netdev_ops->ndo_init(). However, the release of these resources can occur in one of two different places. Either netdev_ops->ndo_uninit() or netdev->destructor(). The decision of which operation frees the resources depends upon whether it is necessary for all netdev refs to be released before it is safe to perform the freeing. netdev_ops->ndo_uninit() presumably can occur right after the NETDEV_UNREGISTER notifier completes and the unicast and multicast address lists are flushed. netdev->destructor(), on the other hand, does not run until the netdev references all go away. Further complicating the situation is that netdev->destructor() almost universally does also a free_netdev(). This creates a problem for the logic in register_netdevice(). Because all callers of register_netdevice() manage the freeing of the netdev, and invoke free_netdev(dev) if register_netdevice() fails. If netdev_ops->ndo_init() succeeds, but something else fails inside of register_netdevice(), it does call ndo_ops->ndo_uninit(). But it is not able to invoke netdev->destructor(). This is because netdev->destructor() will do a free_netdev() and then the caller of register_netdevice() will do the same. However, this means that the resources that would normally be released by netdev->destructor() will not be. Over the years drivers have added local hacks to deal with this, by invoking their destructor parts by hand when register_netdevice() fails. Many drivers do not try to deal with this, and instead we have leaks. Let's close this hole by formalizing the distinction between what private things need to be freed up by netdev->destructor() and whether the driver needs unregister_netdevice() to perform the free_netdev(). netdev->priv_destructor() performs all actions to free up the private resources that used to be freed by netdev->destructor(), except for free_netdev(). netdev->needs_free_netdev is a boolean that indicates whether free_netdev() should be done at the end of unregister_netdevice(). Now, register_netdevice() can sanely release all resources after ndo_ops->ndo_init() succeeds, by invoking both ndo_ops->ndo_uninit() and netdev->priv_destructor(). And at the end of unregister_netdevice(), we invoke netdev->priv_destructor() and optionally call free_netdev(). Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-05geneve: fix needed_headroom and max_mtu for collect_metadataEric Garver1-1/+1
Since commit 9b4437a5b870 ("geneve: Unify LWT and netdev handling.") when using COLLECT_METADATA geneve devices are created with too small of a needed_headroom and too large of a max_mtu. This is because ip_tunnel_info_af() is not valid with the device level info when using COLLECT_METADATA and we mistakenly fall into the IPv4 case. For COLLECT_METADATA, always use the worst case of ipv6 since both sockets are created. Fixes: 9b4437a5b870 ("geneve: Unify LWT and netdev handling.") Signed-off-by: Eric Garver <e@erig.me> Acked-by: Pravin B Shelar <pshelar@ovn.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-25geneve: fix fill_info when using collect_metadataEric Garver1-3/+5
Since 9b4437a5b870 ("geneve: Unify LWT and netdev handling.") fill_info does not return UDP_ZERO_CSUM6_RX when using COLLECT_METADATA. This is because it uses ip_tunnel_info_af() with the device level info, which is not valid for COLLECT_METADATA. Fix by checking for the presence of the actual sockets. Fixes: 9b4437a5b870 ("geneve: Unify LWT and netdev handling.") Signed-off-by: Eric Garver <e@erig.me> Acked-by: Pravin B Shelar <pshelar@ovn.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-01geneve: fix incorrect setting of UDP checksum flagGirish Moodalbail1-1/+1
Creating a geneve link with 'udpcsum' set results in a creation of link for which UDP checksum will NOT be computed on outbound packets, as can be seen below. 11: gen0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN link/ether c2:85:27:b6:b4:15 brd ff:ff:ff:ff:ff:ff promiscuity 0 geneve id 200 remote 192.168.13.1 dstport 6081 noudpcsum Similarly, creating a link with 'noudpcsum' set results in a creation of link for which UDP checksum will be computed on outbound packets. Fixes: 9b4437a5b870 ("geneve: Unify LWT and netdev handling.") Signed-off-by: Girish Moodalbail <girish.moodalbail@oracle.com> Acked-by: Pravin B Shelar <pshelar@ovn.org> Acked-by: Lance Richardson <lrichard@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-01geneve: lock RCU on TX pathJakub Kicinski1-0/+2
There is no guarantees that callers of the TX path will hold the RCU lock. Grab it explicitly. Fixes: fceb9c3e3825 ("geneve: avoid using stale geneve socket.") Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-29geneve: fix ip_hdr_len reserved for geneve6 tunnel.Haishuang Yan1-1/+1
It shold reserved sizeof(ipv6hdr) for geneve in ipv6 tunnel. Fixes: c3ef5aa5e5 ('geneve: Merge ipv4 and ipv6 geneve_build_skb()') Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com> Acked-by: Pravin B Shelar <pshelar@ovn.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-21geneve: Optimize geneve device lookup.pravin shelar1-4/+13
Rather than comparing 64-bit tunnel-id, compare tunnel vni which is 24-bit id. This also save conversion from vni to tunnel id on each tunnel packet receive. Signed-off-by: Pravin B Shelar <pshelar@ovn.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-21geneve: Remove redundant socket checks.pravin shelar1-8/+2
Geneve already has check for device socket in route lookup function. So no need to check it in xmit function. Signed-off-by: Pravin B Shelar <pshelar@ovn.org> Signed-off-by: David S. Miller <davem@davemloft.net>