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{
    "id": 808439,
    "url": "http://patchwork.ozlabs.org/api/patches/808439/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/netdev/patch/1504217150-16151-8-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": "<1504217150-16151-8-git-send-email-dsahern@gmail.com>",
    "list_archive_url": null,
    "date": "2017-08-31T22:05:50",
    "name": "[v3,net-next,7/7] samples/bpf: Update cgroup socket examples to use uid gid helper",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
    "archived": true,
    "hash": "f81670df062694598b2e5cc44b578ad4b2124cf5",
    "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/1504217150-16151-8-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/808439/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/808439/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<netdev-owner@vger.kernel.org>",
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        "X-Received": "by 10.101.86.68 with SMTP id m4mr4048246pgs.79.1504217174919;\n\tThu, 31 Aug 2017 15:06:14 -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 7/7] samples/bpf: Update cgroup socket examples\n\tto use uid gid helper",
        "Date": "Thu, 31 Aug 2017 15:05:50 -0700",
        "Message-Id": "<1504217150-16151-8-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": "Signed-off-by: David Ahern <dsahern@gmail.com>\n---\n samples/bpf/sock_flags_kern.c |  5 +++++\n samples/bpf/test_cgrp2_sock.c | 12 +++++++++++-\n 2 files changed, 16 insertions(+), 1 deletion(-)",
    "diff": "diff --git a/samples/bpf/sock_flags_kern.c b/samples/bpf/sock_flags_kern.c\nindex 533dd11a6baa..05dcdf8a4baa 100644\n--- a/samples/bpf/sock_flags_kern.c\n+++ b/samples/bpf/sock_flags_kern.c\n@@ -9,8 +9,13 @@ SEC(\"cgroup/sock1\")\n int bpf_prog1(struct bpf_sock *sk)\n {\n \tchar fmt[] = \"socket: family %d type %d protocol %d\\n\";\n+\tchar fmt2[] = \"socket: uid %u gid %u\\n\";\n+\t__u64 gid_uid = bpf_get_current_uid_gid();\n+\t__u32 uid = gid_uid & 0xffffffff;\n+\t__u32 gid = gid_uid >> 32;\n \n \tbpf_trace_printk(fmt, sizeof(fmt), sk->family, sk->type, sk->protocol);\n+\tbpf_trace_printk(fmt2, sizeof(fmt2), uid, gid);\n \n \t/* block PF_INET6, SOCK_RAW, IPPROTO_ICMPV6 sockets\n \t * ie., make ping6 fail\ndiff --git a/samples/bpf/test_cgrp2_sock.c b/samples/bpf/test_cgrp2_sock.c\nindex 5a688837720c..e79594dd629b 100644\n--- a/samples/bpf/test_cgrp2_sock.c\n+++ b/samples/bpf/test_cgrp2_sock.c\n@@ -46,8 +46,18 @@ static int prog_load(__u32 idx, __u32 mark, __u32 prio)\n \n \t/* set mark on socket */\n \tstruct bpf_insn prog_mark[] = {\n-\t\tBPF_MOV64_REG(BPF_REG_1, BPF_REG_6),\n+\t\t/* get uid of process */\n+\t\tBPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,\n+\t\t\t     BPF_FUNC_get_current_uid_gid),\n+\t\tBPF_ALU64_IMM(BPF_AND, BPF_REG_0, 0xffffffff),\n+\n+\t\t/* if uid is 0, use given mark, else use the uid as the mark */\n+\t\tBPF_MOV64_REG(BPF_REG_3, BPF_REG_0),\n+\t\tBPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),\n \t\tBPF_MOV64_IMM(BPF_REG_3, mark),\n+\n+\t\t/* set the mark on the new socket */\n+\t\tBPF_MOV64_REG(BPF_REG_1, BPF_REG_6),\n \t\tBPF_MOV64_IMM(BPF_REG_2, offsetof(struct bpf_sock, mark)),\n \t\tBPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_3, offsetof(struct bpf_sock, mark)),\n \t};\n",
    "prefixes": [
        "v3",
        "net-next",
        "7/7"
    ]
}