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2020-01-23net: convert suitable drivers to use phy_do_ioctl_runningHeiner Kallweit19-230/+20
Convert suitable drivers to use new helper phy_do_ioctl_running. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Acked-by: Timur Tabi <timur@kernel.org> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-22bpf: tcp: Add bpf_cubic exampleMartin KaFai Lau3-0/+585
This patch adds a bpf_cubic example. Some highlights: 1. CONFIG_HZ .kconfig map is used. 2. In bictcp_update(), calculation is changed to use usec resolution (i.e. USEC_PER_JIFFY) instead of using jiffies. Thus, usecs_to_jiffies() is not used in the bpf_cubic.c. 3. In bitctcp_update() [under tcp_friendliness], the original "while (ca->ack_cnt > delta)" loop is changed to the equivalent "ca->ack_cnt / delta" operation. Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200122233658.903774-1-kafai@fb.com
2020-01-22bpf: Sync uapi bpf.h to tools/Martin KaFai Lau1-1/+8
This patch sync uapi bpf.h to tools/. Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200122233652.903348-1-kafai@fb.com
2020-01-22bpf: Add BPF_FUNC_jiffies64Martin KaFai Lau6-1/+48
This patch adds a helper to read the 64bit jiffies. It will be used in a later patch to implement the bpf_cubic.c. The helper is inlined for jit_requested and 64 BITS_PER_LONG as the map_gen_lookup(). Other cases could be considered together with map_gen_lookup() if needed. Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200122233646.903260-1-kafai@fb.com
2020-01-22selftests/bpf: Add tests for program extensionsAlexei Starovoitov3-2/+83
Add program extension tests that build on top of fexit_bpf2bpf tests. Replace three global functions in previously loaded test_pkt_access.c program with three new implementations: int get_skb_len(struct __sk_buff *skb); int get_constant(long val); int get_skb_ifindex(int val, struct __sk_buff *skb, int var); New function return the same results as original only if arguments match. new_get_skb_ifindex() demonstrates that 'skb' argument doesn't have to be first and only argument of BPF program. All normal skb based accesses are available. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/bpf/20200121005348.2769920-4-ast@kernel.org
2020-01-22libbpf: Add support for program extensionsAlexei Starovoitov6-4/+18
Add minimal support for program extensions. bpf_object_open_opts() needs to be called with attach_prog_fd = target_prog_fd and BPF program extension needs to have in .c file section definition like SEC("freplace/func_to_be_replaced"). libbpf will search for "func_to_be_replaced" in the target_prog_fd's BTF and will pass it in attach_btf_id to the kernel. This approach works for tests, but more compex use case may need to request function name (and attach_btf_id that kernel sees) to be more dynamic. Such API will be added in future patches. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/bpf/20200121005348.2769920-3-ast@kernel.org
2020-01-22bpf: Introduce dynamic program extensionsAlexei Starovoitov8-28/+283
Introduce dynamic program extensions. The users can load additional BPF functions and replace global functions in previously loaded BPF programs while these programs are executing. Global functions are verified individually by the verifier based on their types only. Hence the global function in the new program which types match older function can safely replace that corresponding function. This new function/program is called 'an extension' of old program. At load time the verifier uses (attach_prog_fd, attach_btf_id) pair to identify the function to be replaced. The BPF program type is derived from the target program into extension program. Technically bpf_verifier_ops is copied from target program. The BPF_PROG_TYPE_EXT program type is a placeholder. It has empty verifier_ops. The extension program can call the same bpf helper functions as target program. Single BPF_PROG_TYPE_EXT type is used to extend XDP, SKB and all other program types. The verifier allows only one level of replacement. Meaning that the extension program cannot recursively extend an extension. That also means that the maximum stack size is increasing from 512 to 1024 bytes and maximum function nesting level from 8 to 16. The programs don't always consume that much. The stack usage is determined by the number of on-stack variables used by the program. The verifier could have enforced 512 limit for combined original plus extension program, but it makes for difficult user experience. The main use case for extensions is to provide generic mechanism to plug external programs into policy program or function call chaining. BPF trampoline is used to track both fentry/fexit and program extensions because both are using the same nop slot at the beginning of every BPF function. Attaching fentry/fexit to a function that was replaced is not allowed. The opposite is true as well. Replacing a function that currently being analyzed with fentry/fexit is not allowed. The executable page allocated by BPF trampoline is not used by program extensions. This inefficiency will be optimized in future patches. Function by function verification of global function supports scalars and pointer to context only. Hence program extensions are supported for such class of global functions only. In the future the verifier will be extended with support to pointers to structures, arrays with sizes, etc. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/bpf/20200121005348.2769920-2-ast@kernel.org
2020-01-22net: convert additional drivers to use phy_do_ioctlHeiner Kallweit6-37/+6
The first batch of driver conversions missed a few cases where we can use phy_do_ioctl too. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-22bpf, btf: Always output invariant hit in pahole DWARF to BTF transformChris Down1-2/+2
When trying to compile with CONFIG_DEBUG_INFO_BTF enabled, I got this error: % make -s Failed to generate BTF for vmlinux Try to disable CONFIG_DEBUG_INFO_BTF make[3]: *** [vmlinux] Error 1 Compiling again without -s shows the true error (that pahole is missing), but since this is fatal, we should show the error unconditionally on stderr as well, not silence it using the `info` function. With this patch: % make -s BTF: .tmp_vmlinux.btf: pahole (pahole) is not available Failed to generate BTF for vmlinux Try to disable CONFIG_DEBUG_INFO_BTF make[3]: *** [vmlinux] Error 1 Signed-off-by: Chris Down <chris@chrisdown.name> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20200122000110.GA310073@chrisdown.name
2020-01-22selftests/bpf: Build urandom_read with LDFLAGS and LDLIBSDaniel Díaz1-1/+1
During cross-compilation, it was discovered that LDFLAGS and LDLIBS were not being used while building binaries, leading to defaults which were not necessarily correct. OpenEmbedded reported this kind of problem: ERROR: QA Issue: No GNU_HASH in the ELF binary [...], didn't pass LDFLAGS? Signed-off-by: Daniel Díaz <daniel.diaz@linaro.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Andrii Nakryiko <andriin@fb.com> Acked-by: John Fastabend <john.fastabend@gmail.com>
2020-01-22bpf: Fix error path under memory pressureAlexei Starovoitov1-2/+7
Restore the 'if (env->cur_state)' check that was incorrectly removed during code move. Under memory pressure env->cur_state can be freed and zeroed inside do_check(). Hence the check is necessary. Fixes: 51c39bb1d5d1 ("bpf: Introduce function-by-function verification") Reported-by: syzbot+b296579ba5015704d9fa@syzkaller.appspotmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Song Liu <songliubraving@fb.com> Link: https://lore.kernel.org/bpf/20200122024138.3385590-1-ast@kernel.org
2020-01-22bpf: Fix trampoline usage in preemptAlexei Starovoitov1-0/+10
Though the second half of trampoline page is unused a task could be preempted in the middle of the first half of trampoline and two updates to trampoline would change the code from underneath the preempted task. Hence wait for tasks to voluntarily schedule or go to userspace. Add similar wait before freeing the trampoline. Fixes: fec56f5890d9 ("bpf: Introduce BPF trampoline") Reported-by: Jann Horn <jannh@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Paul E. McKenney <paulmck@kernel.org> Link: https://lore.kernel.org/bpf/20200121032231.3292185-1-ast@kernel.org
2020-01-22xsk, net: Make sock_def_readable() have external linkageBjörn Töpel3-2/+4
XDP sockets use the default implementation of struct sock's sk_data_ready callback, which is sock_def_readable(). This function is called in the XDP socket fast-path, and involves a retpoline. By letting sock_def_readable() have external linkage, and being called directly, the retpoline can be avoided. Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20200120092917.13949-1-bjorn.topel@gmail.com
2020-01-21bpf: don't bother with getname/kern_path - use user_path_atAl Viro1-30/+13
kernel/bpf/inode.c misuses kern_path...() - it's much simpler (and more efficient, on top of that) to use user_path...() counterparts rather than bothering with doing getname() manually. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20200120232858.GF8904@ZenIV.linux.org.uk
2020-01-21drivers: net: declance: fix comparing pointer to 0Chen Zhou1-1/+1
Fixes coccicheck warning: ./drivers/net/ethernet/amd/declance.c:611:14-15: WARNING comparing pointer to 0 Replace "skb == 0" with "!skb". Signed-off-by: Chen Zhou <chenzhou10@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21tcp/ipv4: remove AF_INET_FAMILYAlex Shi1-6/+0
After commit 079096f103fa ("tcp/dccp: install syn_recv requests into ehash table") the macro isn't used anymore. remove it. Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21net/hsr: remove seq_nr_after_or_eqAlex Shi1-1/+0
It's never used after introduced. So maybe better to remove. Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com> Cc: Arvid Brodin <arvid.brodin@alten.se> Cc: "David S. Miller" <davem@davemloft.net> Cc: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21hdlx_x25: Fix backwards compat test.David S. Miller1-1/+1
drivers/net/wan/hdlc_x25.c: In function ‘x25_ioctl’: drivers/net/wan/hdlc_x25.c:256:7: warning: suggest parentheses around assignment used as truth value [-Wparentheses] 256 | if (ifr->ifr_settings.size = 0) { | ^~~ Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21net: hns3: cleanup some coding style issueHuazhong Tan4-86/+35
This patch removes some unnecessary return value assignments, some duplicated printing in the caller, refines the judgment of 0 and uses le16_to_cpu to replace __le16_to_cpu. Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21net: hns3: remove redundant print on ENOMEMHuazhong Tan1-3/+1
All kmalloc-based functions print enough information on failures. So this patch removes the log in hclge_get_dfx_reg() when returns ENOMEM. Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21net: hns3: delete unnecessary blank line and space for cleanupGuangbin Huang2-7/+6
This patch deletes some unnecessary blank lines and spaces to clean up code, and in hclgevf_set_vlan_filter() moves the comment to the front of hclgevf_send_mbx_msg(). Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21net: hns3: rewrite a log in hclge_put_vector()Yonglong Liu1-1/+1
When gets vector fails, hclge_put_vector() should print out the vector instead of vector_id in the log and return the wrong vector_id to its caller. Signed-off-by: Yonglong Liu <liuyonglong@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21net: hns3: refine the input parameter 'size' for snprintf()Guojia Liao1-1/+1
The function snprintf() writes at most size bytes (including the terminating null byte ('\0') to str. Now, We can guarantee that the parameter of size is lager than the length of str to be formatting including its terminating null byte. So it's unnecessary to minus 1 for the input parameter 'size'. Signed-off-by: Guojia Liao <liaoguojia@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21net: hns3: move duplicated macro definition into headerGuojia Liao3-5/+3
Macro HCLGE_GET_DFX_REG_TYPE_CNT in hclge_dbg_get_dfx_bd_num() and macro HCLGE_DFX_REG_BD_NUM in hclge_get_dfx_reg_bd_num() have the same meaning, so just defines HCLGE_GET_DFX_REG_TYPE_CNT in hclge_main.h. Signed-off-by: Guojia Liao <liaoguojia@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21net: hns3: set VF's default reset_type to HNAE3_NONE_RESETHuazhong Tan1-0/+2
reset_type means what kind of reset the driver is handling now, so after initializing or reset, the reset_type of VF should be set to HNAE3_NONE_RESET, otherwise, this unknown default value may be a little misleading when the device is running. Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21net: hns3: do not reuse pfmemalloc pagesYunsheng Lin1-2/+8
HNS3 driver allocates pages for DMA with dev_alloc_pages(), which calls alloc_pages_node() with the __GFP_MEMALLOC flag. So, in case of OOM condition, HNS3 can get pages with pfmemalloc flag set. So do not reuse the pages with pfmemalloc flag set because those pages are reserved for special cases, such as low memory case. Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21net: hns3: limit the error logging in the hns3_clean_tx_ring()Yunsheng Lin1-2/+2
The error log printed by netdev_err() in the hns3_clean_tx_ring() may spam the kernel log. This patch uses hns3_rl_err() to ratelimit the error log in the hns3_clean_tx_ring(). Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21wan/hdlc_x25: fix skb handlingMartin Schiller1-2/+11
o call skb_reset_network_header() before hdlc->xmit() o change skb proto to HDLC (0x0019) before hdlc->xmit() o call dev_queue_xmit_nit() before hdlc->xmit() This changes make it possible to trace (tcpdump) outgoing layer2 (ETH_P_HDLC) packets Additionally call skb_reset_network_header() after each skb_push() / skb_pull(). Signed-off-by: Martin Schiller <ms@dev.tdt.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21wan/hdlc_x25: make lapb params configurableMartin Schiller3-3/+87
This enables you to configure mode (DTE/DCE), Modulo, Window, T1, T2, N2 via sethdlc (which needs to be patched as well). Signed-off-by: Martin Schiller <ms@dev.tdt.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21net/smc: allow unprivileged users to read pnet tableHans Wippel1-1/+1
The current flags of the SMC_PNET_GET command only allow privileged users to retrieve entries from the pnet table via netlink. The content of the pnet table may be useful for all users though, e.g., for debugging smc connection problems. This patch removes the GENL_ADMIN_PERM flag so that unprivileged users can read the pnet table. Signed-off-by: Hans Wippel <ndev@hwipl.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21net: convert suitable network drivers to use phy_do_ioctlHeiner Kallweit5-49/+5
Convert suitable network drivers to use phy_do_ioctl. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21net: phy: add new version of phy_do_ioctlHeiner Kallweit2-3/+14
Add a new version of phy_do_ioctl that doesn't check whether net_device is running. It will typically be used if suitable drivers attach the PHY in probe already. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21net: phy: rename phy_do_ioctl to phy_do_ioctl_runningHeiner Kallweit3-5/+5
We just added phy_do_ioctl, but it turned out that we need another version of this function that doesn't check whether net_device is running. So rename phy_do_ioctl to phy_do_ioctl_running. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21net: hns3: replace snprintf with scnprintf in hns3_update_stringsChen Zhou1-3/+2
snprintf returns the number of bytes that would be written, which may be greater than the the actual length to be written. Here use extra code to handle this. scnprintf returns the number of bytes that was actually written, just use scnprintf to simplify the code. Signed-off-by: Chen Zhou <chenzhou10@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-21net: hns3: replace snprintf with scnprintf in hns3_dbg_cmd_readChen Zhou1-2/+2
The return value of snprintf may be greater than the size of HNS3_DBG_READ_LEN, use scnprintf instead in hns3_dbg_cmd_read. Signed-off-by: Chen Zhou <chenzhou10@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-20selftests: Refactor build to remove tools/lib/bpf from include pathToke Høiland-Jørgensen2-33/+30
To make sure no new files are introduced that doesn't include the bpf/ prefix in its #include, remove tools/lib/bpf from the include path entirely. Instead, we introduce a new header files directory under the scratch tools/ dir, and add a rule to run the 'install_headers' rule from libbpf to have a full set of consistent libbpf headers in $(OUTPUT)/tools/include/bpf, and then use $(OUTPUT)/tools/include as the include path for selftests. For consistency we also make sure we put all the scratch build files from other bpftool and libbpf into tools/build/, so everything stays within selftests/. Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/157952561246.1683545.2762245552022369203.stgit@toke.dk
2020-01-20runsqslower: Support user-specified libbpf include and object pathsToke Høiland-Jørgensen1-5/+7
This adds support for specifying the libbpf include and object paths as arguments to the runqslower Makefile, to support reusing the libbpf version built as part of the selftests. Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/157952561135.1683545.5660339645093141381.stgit@toke.dk
2020-01-20tools/runqslower: Remove tools/lib/bpf from include pathToke Høiland-Jørgensen1-1/+1
Since we are now consistently using the bpf/ prefix on #include directives, we don't need to include tools/lib/bpf in the include path. Remove it to make sure we don't inadvertently introduce new includes without the prefix. Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/157952561027.1683545.1976265477926794138.stgit@toke.dk
2020-01-20samples/bpf: Use consistent include paths for libbpfToke Høiland-Jørgensen83-113/+112
Fix all files in samples/bpf to include libbpf header files with the bpf/ prefix, to be consistent with external users of the library. Also ensure that all includes of exported libbpf header files (those that are exported on 'make install' of the library) use bracketed includes instead of quoted. To make sure no new files are introduced that doesn't include the bpf/ prefix in its include, remove tools/lib/bpf from the include path entirely, and use tools/lib instead. Fixes: 6910d7d3867a ("selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir") Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/157952560911.1683545.8795966751309534150.stgit@toke.dk
2020-01-20perf: Use consistent include paths for libbpfToke Høiland-Jørgensen6-6/+6
Fix perf to include libbpf header files with the bpf/ prefix, to be consistent with external users of the library. Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/157952560797.1683545.7685921032671386301.stgit@toke.dk
2020-01-20bpftool: Use consistent include paths for libbpfToke Høiland-Jørgensen17-35/+35
Fix bpftool to include libbpf header files with the bpf/ prefix, to be consistent with external users of the library. Also ensure that all includes of exported libbpf header files (those that are exported on 'make install' of the library) use bracketed includes instead of quoted. To make sure no new files are introduced that doesn't include the bpf/ prefix in its include, remove tools/lib/bpf from the include path entirely, and use tools/lib instead. Fixes: 6910d7d3867a ("selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir") Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/157952560684.1683545.4765181397974997027.stgit@toke.dk
2020-01-20selftests: Use consistent include paths for libbpfToke Høiland-Jørgensen128-181/+181
Fix all selftests to include libbpf header files with the bpf/ prefix, to be consistent with external users of the library. Also ensure that all includes of exported libbpf header files (those that are exported on 'make install' of the library) use bracketed includes instead of quoted. To not break the build, keep the old include path until everything has been changed to the new one; a subsequent patch will remove that. Fixes: 6910d7d3867a ("selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir") Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/157952560568.1683545.9649335788846513446.stgit@toke.dk
2020-01-20tools/runqslower: Use consistent include paths for libbpfToke Høiland-Jørgensen3-5/+6
Fix the runqslower tool to include libbpf header files with the bpf/ prefix, to be consistent with external users of the library. Also ensure that all includes of exported libbpf header files (those that are exported on 'make install' of the library) use bracketed includes instead of quoted. To not break the build, keep the old include path until everything has been changed to the new one; a subsequent patch will remove that. Fixes: 6910d7d3867a ("selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir") Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/157952560457.1683545.9913736511685743625.stgit@toke.dk
2020-01-20selftests: Pass VMLINUX_BTF to runqslower MakefileToke Høiland-Jørgensen1-2/+6
Add a VMLINUX_BTF variable with the locally-built path when calling the runqslower Makefile from selftests. This makes sure a simple 'make' invocation in the selftests dir works even when there is no BTF information for the running kernel. Do a wildcard expansion and include the same paths for BTF for the running kernel as in the runqslower Makefile, to make it possible to build selftests without having a vmlinux in the local tree. Also fix the make invocation to use $(OUTPUT)/tools as the destination directory instead of $(CURDIR)/tools. Fixes: 3a0d3092a4ed ("selftests/bpf: Build runqslower from selftests") Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/157952560344.1683545.2723631988771664417.stgit@toke.dk
2020-01-20tools/bpf/runqslower: Fix override option for VMLINUX_BTFToke Høiland-Jørgensen1-9/+10
The runqslower tool refuses to build without a file to read vmlinux BTF from. The build fails with an error message to override the location by setting the VMLINUX_BTF variable if autodetection fails. However, the Makefile doesn't actually work with that override - the error message is still emitted. Fix this by including the value of VMLINUX_BTF in the expansion, and only emitting the error message if the *result* is empty. Also permit running 'make clean' even though no VMLINUX_BTF is set. Fixes: 9c01546d26d2 ("tools/bpf: Add runqslower tool to tools/bpf") Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/157952560237.1683545.17771785178857224877.stgit@toke.dk
2020-01-20samples/bpf: Don't try to remove user's homedir on cleanToke Høiland-Jørgensen1-1/+1
The 'clean' rule in the samples/bpf Makefile tries to remove backup files (ending in ~). However, if no such files exist, it will instead try to remove the user's home directory. While the attempt is mostly harmless, it does lead to a somewhat scary warning like this: rm: cannot remove '~': Is a directory Fix this by using find instead of shell expansion to locate any actual backup files that need to be removed. Fixes: b62a796c109c ("samples/bpf: allow make to be run from samples/bpf/ directory") Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Link: https://lore.kernel.org/bpf/157952560126.1683545.7273054725976032511.stgit@toke.dk
2020-01-20selftests/bpf: Skip perf hw events test if the setup disabled itHangbin Liu1-2/+6
The same with commit 4e59afbbed96 ("selftests/bpf: skip nmi test when perf hw events are disabled"), it would make more sense to skip the test_stacktrace_build_id_nmi test if the setup (e.g. virtual machines) has disabled hardware perf events. Fixes: 13790d1cc72c ("bpf: add selftest for stackmap with build_id in NMI context") Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: John Fastabend <john.fastabend@gmail.com> Link: https://lore.kernel.org/bpf/20200117100656.10359-1-liuhangbin@gmail.com
2020-01-20selftests/bpf: Don't check for btf fd in test_btfStanislav Fomichev1-4/+0
After commit 0d13bfce023a ("libbpf: Don't require root for bpf_object__open()") we no longer load BTF during bpf_object__open(), so let's remove the expectation from test_btf that the fd is not -1. The test currently fails. Before: BTF libbpf test[1] (test_btf_haskv.o): do_test_file:4152:FAIL bpf_object__btf_fd: -1 BTF libbpf test[2] (test_btf_newkv.o): do_test_file:4152:FAIL bpf_object__btf_fd: -1 BTF libbpf test[3] (test_btf_nokv.o): do_test_file:4152:FAIL bpf_object__btf_fd: -1 After: BTF libbpf test[1] (test_btf_haskv.o): OK BTF libbpf test[2] (test_btf_newkv.o): OK BTF libbpf test[3] (test_btf_nokv.o): OK Fixes: 0d13bfce023a ("libbpf: Don't require root for bpf_object__open()") Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: John Fastabend <john.fastabend@gmail.com> Link: https://lore.kernel.org/bpf/20200118010546.74279-1-sdf@google.com
2020-01-20bpf: Fix memory leaks in generic update/delete batch opsBrian Vazquez1-11/+19
Generic update/delete batch ops functions were using __bpf_copy_key without properly freeing the memory. Handle the memory allocation and copy_from_user separately. Fixes: aa2e93b8e58e ("bpf: Add generic support for update and delete batch ops") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Brian Vazquez <brianvv@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20200119194040.128369-1-brianvv@google.com
2020-01-20spectrum: Add a delayed work to update SPAN buffsize according to speedJiri Pirko4-0/+24
When PUDE event is handled and the link is up, update the port SPAN buffer size according to the current speed. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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