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{
    "id": 818946,
    "url": "http://patchwork.ozlabs.org/api/patches/818946/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/netdev/patch/20170927062322.5476-7-jiri@resnulli.us/",
    "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",
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    "msgid": "<20170927062322.5476-7-jiri@resnulli.us>",
    "list_archive_url": null,
    "date": "2017-09-27T06:23:16",
    "name": "[net-next,v3,06/12] net: mroute: Check if rule is a default rule",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
    "archived": true,
    "hash": "60a0ad68d78b07b1bf54d7189a1b8d5b67b836f0",
    "submitter": {
        "id": 15321,
        "url": "http://patchwork.ozlabs.org/api/people/15321/?format=api",
        "name": "Jiri Pirko",
        "email": "jiri@resnulli.us"
    },
    "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/20170927062322.5476-7-jiri@resnulli.us/mbox/",
    "series": [
        {
            "id": 5290,
            "url": "http://patchwork.ozlabs.org/api/series/5290/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/netdev/list/?series=5290",
            "date": "2017-09-27T06:23:12",
            "name": "mlxsw: Add support for offloading IPv4 multicast routes",
            "version": 3,
            "mbox": "http://patchwork.ozlabs.org/series/5290/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/818946/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/818946/checks/",
    "tags": {},
    "related": [],
    "headers": {
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        "X-Received": "by 10.223.160.46 with SMTP id k43mr376804wrk.113.1506493409392; \n\tTue, 26 Sep 2017 23:23:29 -0700 (PDT)",
        "From": "Jiri Pirko <jiri@resnulli.us>",
        "To": "netdev@vger.kernel.org",
        "Cc": "davem@davemloft.net, yotamg@mellanox.com, idosch@mellanox.com,\n\tmlxsw@mellanox.com, nikolay@cumulusnetworks.com, andrew@lunn.ch,\n\tlinyunsheng@huawei.com",
        "Subject": "[patch net-next v3 06/12] net: mroute: Check if rule is a default\n\trule",
        "Date": "Wed, 27 Sep 2017 08:23:16 +0200",
        "Message-Id": "<20170927062322.5476-7-jiri@resnulli.us>",
        "X-Mailer": "git-send-email 2.9.5",
        "In-Reply-To": "<20170927062322.5476-1-jiri@resnulli.us>",
        "References": "<20170927062322.5476-1-jiri@resnulli.us>",
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    },
    "content": "From: Yotam Gigi <yotamg@mellanox.com>\n\nWhen the ipmr starts, it adds one default FIB rule that matches all packets\nand sends them to the DEFAULT (multicast) FIB table. A more complex rule\ncan be added by user to specify that for a specific interface, a packet\nshould be look up at either an arbitrary table or according to the l3mdev\nof the interface.\n\nFor drivers willing to offload the ipmr logic into a hardware but don't\nwant to offload all the FIB rules functionality, provide a function that\ncan indicate whether the FIB rule is the default multicast rule, thus only\none routing table is needed.\n\nThis way, a driver can register to the FIB notification chain, get\nnotifications about FIB rules added and trigger some kind of an internal\nabort mechanism when a non default rule is added by the user.\n\nSigned-off-by: Yotam Gigi <yotamg@mellanox.com>\nReviewed-by: Ido Schimmel <idosch@mellanox.com>\nSigned-off-by: Jiri Pirko <jiri@mellanox.com>\n---\nv2->v3:\n - Use the already existing ifdef CONFIG_IP_MROUTE_MULTIPLE_TABLES\nv1->v2:\n - Update the lastuse MFC entry field too, in addition to packets an bytes.\n---\n include/linux/mroute.h |  7 +++++++\n net/ipv4/ipmr.c        | 12 ++++++++++++\n 2 files changed, 19 insertions(+)",
    "diff": "diff --git a/include/linux/mroute.h b/include/linux/mroute.h\nindex 5566580..b072a84 100644\n--- a/include/linux/mroute.h\n+++ b/include/linux/mroute.h\n@@ -5,6 +5,7 @@\n #include <linux/pim.h>\n #include <linux/rhashtable.h>\n #include <net/sock.h>\n+#include <net/fib_rules.h>\n #include <net/fib_notifier.h>\n #include <uapi/linux/mroute.h>\n \n@@ -19,6 +20,7 @@ int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *);\n int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg);\n int ipmr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);\n int ip_mr_init(void);\n+bool ipmr_rule_default(const struct fib_rule *rule);\n #else\n static inline int ip_mroute_setsockopt(struct sock *sock, int optname,\n \t\t\t\t       char __user *optval, unsigned int optlen)\n@@ -46,6 +48,11 @@ static inline int ip_mroute_opt(int opt)\n {\n \treturn 0;\n }\n+\n+static inline bool ipmr_rule_default(const struct fib_rule *rule)\n+{\n+\treturn true;\n+}\n #endif\n \n struct vif_device {\ndiff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c\nindex 2a795d2..292a8e8 100644\n--- a/net/ipv4/ipmr.c\n+++ b/net/ipv4/ipmr.c\n@@ -274,6 +274,12 @@ static unsigned int ipmr_rules_seq_read(struct net *net)\n {\n \treturn fib_rules_seq_read(net, RTNL_FAMILY_IPMR);\n }\n+\n+bool ipmr_rule_default(const struct fib_rule *rule)\n+{\n+\treturn fib_rule_matchall(rule) && rule->table == RT_TABLE_DEFAULT;\n+}\n+EXPORT_SYMBOL(ipmr_rule_default);\n #else\n #define ipmr_for_each_table(mrt, net) \\\n \tfor (mrt = net->ipv4.mrt; mrt; mrt = NULL)\n@@ -318,6 +324,12 @@ static unsigned int ipmr_rules_seq_read(struct net *net)\n {\n \treturn 0;\n }\n+\n+bool ipmr_rule_default(const struct fib_rule *rule)\n+{\n+\treturn true;\n+}\n+EXPORT_SYMBOL(ipmr_rule_default);\n #endif\n \n static inline int ipmr_hash_cmp(struct rhashtable_compare_arg *arg,\n",
    "prefixes": [
        "net-next",
        "v3",
        "06/12"
    ]
}