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{
    "id": 808442,
    "url": "http://patchwork.ozlabs.org/api/patches/808442/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/netdev/patch/1504217150-16151-5-git-send-email-dsahern@gmail.com/",
    "project": {
        "id": 7,
        "url": "http://patchwork.ozlabs.org/api/projects/7/?format=api",
        "name": "Linux network development",
        "link_name": "netdev",
        "list_id": "netdev.vger.kernel.org",
        "list_email": "netdev@vger.kernel.org",
        "web_url": null,
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    "msgid": "<1504217150-16151-5-git-send-email-dsahern@gmail.com>",
    "list_archive_url": null,
    "date": "2017-08-31T22:05:47",
    "name": "[v3,net-next,4/7] samples/bpf: Add detach option to test_cgrp2_sock",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
    "archived": true,
    "hash": "cd1997361c2beed169375583dd3bcc3076f86a1a",
    "submitter": {
        "id": 6918,
        "url": "http://patchwork.ozlabs.org/api/people/6918/?format=api",
        "name": "David Ahern",
        "email": "dsahern@gmail.com"
    },
    "delegate": {
        "id": 34,
        "url": "http://patchwork.ozlabs.org/api/users/34/?format=api",
        "username": "davem",
        "first_name": "David",
        "last_name": "Miller",
        "email": "davem@davemloft.net"
    },
    "mbox": "http://patchwork.ozlabs.org/project/netdev/patch/1504217150-16151-5-git-send-email-dsahern@gmail.com/mbox/",
    "series": [
        {
            "id": 913,
            "url": "http://patchwork.ozlabs.org/api/series/913/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/netdev/list/?series=913",
            "date": "2017-08-31T22:05:43",
            "name": "bpf: Add option to set mark and priority in cgroup sock programs",
            "version": 3,
            "mbox": "http://patchwork.ozlabs.org/series/913/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/808442/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/808442/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<netdev-owner@vger.kernel.org>",
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        "X-Received": "by 10.99.2.83 with SMTP id 80mr4040710pgc.170.1504217172185;\n\tThu, 31 Aug 2017 15:06:12 -0700 (PDT)",
        "From": "David Ahern <dsahern@gmail.com>",
        "To": "netdev@vger.kernel.org, daniel@iogearbox.net, ast@kernel.org",
        "Cc": "David Ahern <dsahern@gmail.com>",
        "Subject": "[PATCH v3 net-next 4/7] samples/bpf: Add detach option to\n\ttest_cgrp2_sock",
        "Date": "Thu, 31 Aug 2017 15:05:47 -0700",
        "Message-Id": "<1504217150-16151-5-git-send-email-dsahern@gmail.com>",
        "X-Mailer": "git-send-email 2.1.4",
        "In-Reply-To": "<1504217150-16151-1-git-send-email-dsahern@gmail.com>",
        "References": "<1504217150-16151-1-git-send-email-dsahern@gmail.com>",
        "Sender": "netdev-owner@vger.kernel.org",
        "Precedence": "bulk",
        "List-ID": "<netdev.vger.kernel.org>",
        "X-Mailing-List": "netdev@vger.kernel.org"
    },
    "content": "Add option to detach programs from a cgroup.\n\nSigned-off-by: David Ahern <dsahern@gmail.com>\n---\n samples/bpf/test_cgrp2_sock.c | 50 ++++++++++++++++++++++++++++++-------------\n 1 file changed, 35 insertions(+), 15 deletions(-)",
    "diff": "diff --git a/samples/bpf/test_cgrp2_sock.c b/samples/bpf/test_cgrp2_sock.c\nindex 681abbe6c85e..15396761c5cc 100644\n--- a/samples/bpf/test_cgrp2_sock.c\n+++ b/samples/bpf/test_cgrp2_sock.c\n@@ -114,7 +114,12 @@ static int prog_load(__u32 idx, __u32 mark, __u32 prio)\n \n static int usage(const char *argv0)\n {\n-\tprintf(\"Usage: %s -b bind-to-dev -m mark -p prio cg-path\\n\", argv0);\n+\tprintf(\"Usage:\\n\");\n+\tprintf(\"  Attach a program\\n\");\n+\tprintf(\"  %s -b bind-to-dev -m mark -p prio cg-path\\n\", argv0);\n+\tprintf(\"\\n\");\n+\tprintf(\"  Detach a program\\n\");\n+\tprintf(\"  %s -d cg-path\\n\", argv0);\n \treturn EXIT_FAILURE;\n }\n \n@@ -123,10 +128,14 @@ int main(int argc, char **argv)\n \t__u32 idx = 0, mark = 0, prio = 0;\n \tconst char *cgrp_path = NULL;\n \tint cg_fd, prog_fd, ret;\n+\tint do_attach = 1;\n \tint rc;\n \n-\twhile ((rc = getopt(argc, argv, \"b:m:p:\")) != -1) {\n+\twhile ((rc = getopt(argc, argv, \"db:m:p:\")) != -1) {\n \t\tswitch (rc) {\n+\t\tcase 'd':\n+\t\t\tdo_attach = 0;\n+\t\t\tbreak;\n \t\tcase 'b':\n \t\t\tidx = if_nametoindex(optarg);\n \t\t\tif (!idx) {\n@@ -157,7 +166,7 @@ int main(int argc, char **argv)\n \t\treturn EXIT_FAILURE;\n \t}\n \n-\tif (!idx && !mark && !prio) {\n+\tif (do_attach && !idx && !mark && !prio) {\n \t\tfprintf(stderr,\n \t\t\t\"One of device, mark or priority must be given\\n\");\n \t\treturn EXIT_FAILURE;\n@@ -169,20 +178,31 @@ int main(int argc, char **argv)\n \t\treturn EXIT_FAILURE;\n \t}\n \n-\tprog_fd = prog_load(idx, mark, prio);\n-\tif (prog_fd < 0) {\n-\t\tprintf(\"Failed to load prog: '%s'\\n\", strerror(errno));\n-\t\tprintf(\"Output from kernel verifier:\\n%s\\n-------\\n\",\n-\t\t       bpf_log_buf);\n-\t\treturn EXIT_FAILURE;\n-\t}\n+\tif (do_attach) {\n+\t\tprog_fd = prog_load(idx, mark, prio);\n+\t\tif (prog_fd < 0) {\n+\t\t\tprintf(\"Failed to load prog: '%s'\\n\", strerror(errno));\n+\t\t\tprintf(\"Output from kernel verifier:\\n%s\\n-------\\n\",\n+\t\t\t       bpf_log_buf);\n+\t\t\treturn EXIT_FAILURE;\n+\t\t}\n \n-\tret = bpf_prog_attach(prog_fd, cg_fd, BPF_CGROUP_INET_SOCK_CREATE, 0);\n-\tif (ret < 0) {\n-\t\tprintf(\"Failed to attach prog to cgroup: '%s'\\n\",\n-\t\t       strerror(errno));\n-\t\treturn EXIT_FAILURE;\n+\t\tret = bpf_prog_attach(prog_fd, cg_fd,\n+\t\t\t\t      BPF_CGROUP_INET_SOCK_CREATE, 0);\n+\t\tif (ret < 0) {\n+\t\t\tprintf(\"Failed to attach prog to cgroup: '%s'\\n\",\n+\t\t\t       strerror(errno));\n+\t\t\treturn EXIT_FAILURE;\n+\t\t}\n+\t} else {\n+\t\tret = bpf_prog_detach(cg_fd, BPF_CGROUP_INET_SOCK_CREATE);\n+\t\tif (ret < 0) {\n+\t\t\tprintf(\"Failed to detach prog from cgroup: '%s'\\n\",\n+\t\t\t       strerror(errno));\n+\t\t\treturn EXIT_FAILURE;\n+\t\t}\n \t}\n \n+\tclose(cg_fd);\n \treturn EXIT_SUCCESS;\n }\n",
    "prefixes": [
        "v3",
        "net-next",
        "4/7"
    ]
}