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Fri, 12 Mar 2021 17:24:23 +0000 Received: from localhost.localdomain (172.20.145.6) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 12 Mar 2021 17:24:19 +0000 From: Petr Machata To: , , CC: Ido Schimmel , Petr Machata Subject: [PATCH iproute2-next 6/6] nexthop: Add support for nexthop buckets Date: Fri, 12 Mar 2021 18:23:09 +0100 Message-ID: <437055b04926ca1b15b17056199aa3e981d8a424.1615568866.git.petrm@nvidia.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [172.20.145.6] X-ClientProxiedBy: HQMAIL105.nvidia.com (172.20.187.12) To HQMAIL107.nvidia.com (172.20.187.13) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 1dcc7a1d-f330-4263-3000-08d8e57bae12 X-MS-TrafficTypeDiagnostic: BN8PR12MB3346: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:549; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Mar 2021 17:24:23.5921 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 1dcc7a1d-f330-4263-3000-08d8e57bae12 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.112.34];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT014.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN8PR12MB3346 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Petr Machata From: Ido Schimmel Add ability to dump multiple nexthop buckets and get a specific one. Example: # ip nexthop add id 10 group 1/2 type resilient buckets 8 # ip nexthop id 1 via 192.0.2.2 dev dummy10 scope link id 2 via 192.0.2.19 dev dummy20 scope link id 10 group 1/2 type resilient buckets 8 idle_timer 120 unbalanced_timer 0 unbalanced_time 0 # ip nexthop bucket id 10 index 0 idle_time 28.1 nhid 2 id 10 index 1 idle_time 28.1 nhid 2 id 10 index 2 idle_time 28.1 nhid 2 id 10 index 3 idle_time 28.1 nhid 2 id 10 index 4 idle_time 28.1 nhid 1 id 10 index 5 idle_time 28.1 nhid 1 id 10 index 6 idle_time 28.1 nhid 1 id 10 index 7 idle_time 28.1 nhid 1 # ip nexthop bucket show nhid 1 id 10 index 4 idle_time 53.59 nhid 1 id 10 index 5 idle_time 53.59 nhid 1 id 10 index 6 idle_time 53.59 nhid 1 id 10 index 7 idle_time 53.59 nhid 1 # ip nexthop bucket get id 10 index 5 id 10 index 5 idle_time 81 nhid 1 # ip -j -p nexthop bucket get id 10 index 5 [ { "id": 10, "bucket": { "index": 5, "idle_time": 104.89, "nhid": 1 }, "flags": [ ] } ] Signed-off-by: Ido Schimmel --- include/libnetlink.h | 3 + ip/ip_common.h | 1 + ip/ipmonitor.c | 6 + ip/ipnexthop.c | 254 ++++++++++++++++++++++++++++++++++++++++++ lib/libnetlink.c | 26 +++++ man/man8/ip-nexthop.8 | 45 ++++++++ 6 files changed, 335 insertions(+) diff --git a/include/libnetlink.h b/include/libnetlink.h index b9073a6a13ad..e8ed5d7fb495 100644 --- a/include/libnetlink.h +++ b/include/libnetlink.h @@ -97,6 +97,9 @@ int rtnl_dump_request_n(struct rtnl_handle *rth, struct nlmsghdr *n) int rtnl_nexthopdump_req(struct rtnl_handle *rth, int family, req_filter_fn_t filter_fn) __attribute__((warn_unused_result)); +int rtnl_nexthop_bucket_dump_req(struct rtnl_handle *rth, int family, + req_filter_fn_t filter_fn) + __attribute__((warn_unused_result)); struct rtnl_ctrl_data { int nsid; diff --git a/ip/ip_common.h b/ip/ip_common.h index 9a31e837563f..55a5521c4275 100644 --- a/ip/ip_common.h +++ b/ip/ip_common.h @@ -53,6 +53,7 @@ int print_rule(struct nlmsghdr *n, void *arg); int print_netconf(struct rtnl_ctrl_data *ctrl, struct nlmsghdr *n, void *arg); int print_nexthop(struct nlmsghdr *n, void *arg); +int print_nexthop_bucket(struct nlmsghdr *n, void *arg); void netns_map_init(void); void netns_nsid_socket_init(void); int print_nsid(struct nlmsghdr *n, void *arg); diff --git a/ip/ipmonitor.c b/ip/ipmonitor.c index 99f5fda8ba1f..d7f31cf5d1b5 100644 --- a/ip/ipmonitor.c +++ b/ip/ipmonitor.c @@ -90,6 +90,12 @@ static int accept_msg(struct rtnl_ctrl_data *ctrl, print_nexthop(n, arg); return 0; + case RTM_NEWNEXTHOPBUCKET: + case RTM_DELNEXTHOPBUCKET: + print_headers(fp, "[NEXTHOPBUCKET]", ctrl); + print_nexthop_bucket(n, arg); + return 0; + case RTM_NEWLINK: case RTM_DELLINK: ll_remember_index(n, NULL); diff --git a/ip/ipnexthop.c b/ip/ipnexthop.c index 1d50bf7529c4..0263307c49df 100644 --- a/ip/ipnexthop.c +++ b/ip/ipnexthop.c @@ -21,6 +21,8 @@ static struct { unsigned int master; unsigned int proto; unsigned int fdb; + unsigned int id; + unsigned int nhid; } filter; enum { @@ -39,8 +41,11 @@ static void usage(void) "Usage: ip nexthop { list | flush } [ protocol ID ] SELECTOR\n" " ip nexthop { add | replace } id ID NH [ protocol ID ]\n" " ip nexthop { get | del } id ID\n" + " ip nexthop bucket list BUCKET_SELECTOR\n" + " ip nexthop bucket get id ID index INDEX\n" "SELECTOR := [ id ID ] [ dev DEV ] [ vrf NAME ] [ master DEV ]\n" " [ groups ] [ fdb ]\n" + "BUCKET_SELECTOR := SELECTOR | [ nhid ID ]\n" "NH := { blackhole | [ via ADDRESS ] [ dev DEV ] [ onlink ]\n" " [ encap ENCAPTYPE ENCAPHDR ] |\n" " group GROUP [ fdb ] [ type TYPE [ TYPE_ARGS ] ] }\n" @@ -85,6 +90,36 @@ static int nh_dump_filter(struct nlmsghdr *nlh, int reqlen) return 0; } +static int nh_dump_bucket_filter(struct nlmsghdr *nlh, int reqlen) +{ + struct rtattr *nest; + int err = 0; + + err = nh_dump_filter(nlh, reqlen); + if (err) + return err; + + if (filter.id) { + err = addattr32(nlh, reqlen, NHA_ID, filter.id); + if (err) + return err; + } + + if (filter.nhid) { + nest = addattr_nest(nlh, reqlen, NHA_RES_BUCKET); + nest->rta_type |= NLA_F_NESTED; + + err = addattr32(nlh, reqlen, NHA_RES_BUCKET_NH_ID, + filter.nhid); + if (err) + return err; + + addattr_nest_end(nlh, nest); + } + + return err; +} + static struct rtnl_handle rth_del = { .fd = -1 }; static int delete_nexthop(__u32 id) @@ -266,6 +301,33 @@ static void print_nh_res_group(FILE *fp, const struct rtattr *res_grp_attr) close_json_object(); } +static void print_nh_res_bucket(FILE *fp, const struct rtattr *res_bucket_attr) +{ + struct rtattr *tb[NHA_RES_BUCKET_MAX + 1]; + + parse_rtattr_nested(tb, NHA_RES_BUCKET_MAX, res_bucket_attr); + + open_json_object("bucket"); + + if (tb[NHA_RES_BUCKET_INDEX]) + print_uint(PRINT_ANY, "index", "index %u ", + rta_getattr_u16(tb[NHA_RES_BUCKET_INDEX])); + + if (tb[NHA_RES_BUCKET_IDLE_TIME]) { + struct rtattr *rta = tb[NHA_RES_BUCKET_IDLE_TIME]; + struct timeval tv; + + __jiffies_to_tv(&tv, rta_getattr_u64(rta)); + print_tv(PRINT_ANY, "idle_time", "idle_time %g ", &tv); + } + + if (tb[NHA_RES_BUCKET_NH_ID]) + print_uint(PRINT_ANY, "nhid", "nhid %u ", + rta_getattr_u32(tb[NHA_RES_BUCKET_NH_ID])); + + close_json_object(); +} + int print_nexthop(struct nlmsghdr *n, void *arg) { struct nhmsg *nhm = NLMSG_DATA(n); @@ -346,6 +408,50 @@ int print_nexthop(struct nlmsghdr *n, void *arg) return 0; } +int print_nexthop_bucket(struct nlmsghdr *n, void *arg) +{ + struct nhmsg *nhm = NLMSG_DATA(n); + struct rtattr *tb[NHA_MAX+1]; + FILE *fp = (FILE *)arg; + int len; + + if (n->nlmsg_type != RTM_DELNEXTHOPBUCKET && + n->nlmsg_type != RTM_NEWNEXTHOPBUCKET) { + fprintf(stderr, "Not a nexthop bucket: %08x %08x %08x\n", + n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags); + return -1; + } + + len = n->nlmsg_len - NLMSG_SPACE(sizeof(*nhm)); + if (len < 0) { + close_json_object(); + fprintf(stderr, "BUG: wrong nlmsg len %d\n", len); + return -1; + } + + parse_rtattr_flags(tb, NHA_MAX, RTM_NHA(nhm), len, NLA_F_NESTED); + + open_json_object(NULL); + + if (n->nlmsg_type == RTM_DELNEXTHOP) + print_bool(PRINT_ANY, "deleted", "Deleted ", true); + + if (tb[NHA_ID]) + print_uint(PRINT_ANY, "id", "id %u ", + rta_getattr_u32(tb[NHA_ID])); + + if (tb[NHA_RES_BUCKET]) + print_nh_res_bucket(fp, tb[NHA_RES_BUCKET]); + + print_rt_flags(fp, nhm->nh_flags); + + print_string(PRINT_FP, NULL, "%s", "\n"); + close_json_object(); + fflush(fp); + + return 0; +} + static int add_nh_group_attr(struct nlmsghdr *n, int maxlen, char *argv) { struct nexthop_grp *grps; @@ -721,6 +827,151 @@ static int ipnh_get(int argc, char **argv) return ipnh_get_id(id); } +static int ipnh_bucket_list(int argc, char **argv) +{ + while (argc > 0) { + if (!matches(*argv, "dev")) { + NEXT_ARG(); + filter.ifindex = ll_name_to_index(*argv); + if (!filter.ifindex) + invarg("Device does not exist\n", *argv); + } else if (!matches(*argv, "master")) { + NEXT_ARG(); + filter.master = ll_name_to_index(*argv); + if (!filter.master) + invarg("Device does not exist\n", *argv); + } else if (matches(*argv, "vrf") == 0) { + NEXT_ARG(); + if (!name_is_vrf(*argv)) + invarg("Invalid VRF\n", *argv); + filter.master = ll_name_to_index(*argv); + if (!filter.master) + invarg("VRF does not exist\n", *argv); + } else if (!strcmp(*argv, "id")) { + NEXT_ARG(); + filter.id = ipnh_parse_id(*argv); + } else if (!strcmp(*argv, "nhid")) { + NEXT_ARG(); + filter.nhid = ipnh_parse_id(*argv); + } else if (matches(*argv, "help") == 0) { + usage(); + } else { + invarg("", *argv); + } + argc--; argv++; + } + + if (rtnl_nexthop_bucket_dump_req(&rth, preferred_family, + nh_dump_bucket_filter) < 0) { + perror("Cannot send dump request"); + return -2; + } + + new_json_obj(json); + + if (rtnl_dump_filter(&rth, print_nexthop_bucket, stdout) < 0) { + fprintf(stderr, "Dump terminated\n"); + return -2; + } + + delete_json_obj(); + fflush(stdout); + + return 0; +} + +static int ipnh_bucket_get_id(__u32 id, __u16 bucket_index) +{ + struct { + struct nlmsghdr n; + struct nhmsg nhm; + char buf[1024]; + } req = { + .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct nhmsg)), + .n.nlmsg_flags = NLM_F_REQUEST, + .n.nlmsg_type = RTM_GETNEXTHOPBUCKET, + .nhm.nh_family = preferred_family, + }; + struct nlmsghdr *answer; + struct rtattr *nest; + + addattr32(&req.n, sizeof(req), NHA_ID, id); + + nest = addattr_nest(&req.n, sizeof(req), NHA_RES_BUCKET); + nest->rta_type |= NLA_F_NESTED; + + addattr16(&req.n, sizeof(req), NHA_RES_BUCKET_INDEX, bucket_index); + + addattr_nest_end(&req.n, nest); + + if (rtnl_talk(&rth, &req.n, &answer) < 0) + return -2; + + new_json_obj(json); + + if (print_nexthop_bucket(answer, (void *)stdout) < 0) { + free(answer); + return -1; + } + + delete_json_obj(); + fflush(stdout); + + free(answer); + + return 0; +} + +static int ipnh_bucket_get(int argc, char **argv) +{ + bool bucket_valid = false; + __u16 bucket_index; + __u32 id = 0; + + while (argc > 0) { + if (!strcmp(*argv, "id")) { + NEXT_ARG(); + id = ipnh_parse_id(*argv); + } else if (!strcmp(*argv, "index")) { + NEXT_ARG(); + if (get_u16(&bucket_index, *argv, 0)) + invarg("invalid bucket index value", *argv); + bucket_valid = true; + } else { + usage(); + } + argc--; argv++; + } + + if (!id || !bucket_valid) { + usage(); + return -1; + } + + return ipnh_bucket_get_id(id, bucket_index); +} + +static int do_ipnh_bucket(int argc, char **argv) +{ + if (argc < 1) + return ipnh_bucket_list(0, NULL); + + if (!matches(*argv, "list") || + !matches(*argv, "show") || + !matches(*argv, "lst")) + return ipnh_bucket_list(argc-1, argv+1); + + if (!matches(*argv, "get")) + return ipnh_bucket_get(argc-1, argv+1); + + if (!matches(*argv, "help")) + usage(); + + fprintf(stderr, + "Command \"%s\" is unknown, try \"ip nexthop help\".\n", *argv); + exit(-1); +} + int do_ipnh(int argc, char **argv) { if (argc < 1) @@ -746,6 +997,9 @@ int do_ipnh(int argc, char **argv) if (!matches(*argv, "flush")) return ipnh_list_flush(argc-1, argv+1, IPNH_FLUSH); + if (!matches(*argv, "bucket")) + return do_ipnh_bucket(argc-1, argv+1); + if (!matches(*argv, "help")) usage(); diff --git a/lib/libnetlink.c b/lib/libnetlink.c index c958aa57d0cd..6885087b34f9 100644 --- a/lib/libnetlink.c +++ b/lib/libnetlink.c @@ -282,6 +282,32 @@ int rtnl_nexthopdump_req(struct rtnl_handle *rth, int family, return send(rth->fd, &req, sizeof(req), 0); } +int rtnl_nexthop_bucket_dump_req(struct rtnl_handle *rth, int family, + req_filter_fn_t filter_fn) +{ + struct { + struct nlmsghdr nlh; + struct nhmsg nhm; + char buf[128]; + } req = { + .nlh.nlmsg_len = NLMSG_LENGTH(sizeof(struct nhmsg)), + .nlh.nlmsg_type = RTM_GETNEXTHOPBUCKET, + .nlh.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST, + .nlh.nlmsg_seq = rth->dump = ++rth->seq, + .nhm.nh_family = family, + }; + + if (filter_fn) { + int err; + + err = filter_fn(&req.nlh, sizeof(req)); + if (err) + return err; + } + + return send(rth->fd, &req, sizeof(req), 0); +} + int rtnl_addrdump_req(struct rtnl_handle *rth, int family, req_filter_fn_t filter_fn) { diff --git a/man/man8/ip-nexthop.8 b/man/man8/ip-nexthop.8 index c68fcc0f9cf5..d9ce634fb3d8 100644 --- a/man/man8/ip-nexthop.8 +++ b/man/man8/ip-nexthop.8 @@ -28,6 +28,14 @@ ip-nexthop \- nexthop object management .BR "ip nexthop" " { " get " | " del " } id " .I ID +.ti -8 +.BI "ip nexthop bucket list " BUCKET_SELECTOR + +.ti -8 +.BR "ip nexthop bucket get " id +.I ID +.RI "index " INDEX + .ti -8 .IR SELECTOR " := " .RB "[ " id @@ -41,6 +49,12 @@ ip-nexthop \- nexthop object management .BR groups " ] [ " .BR fdb " ]" +.ti -8 +.IR BUCKET_SELECTOR " := " +.IR SELECTOR +.RB " | [ " nhid +.IR ID " ]" + .ti -8 .IR NH " := { " .BR blackhole " | [ " @@ -229,6 +243,37 @@ as show. ip nexthop get id ID get a single nexthop by id +.TP +ip nexthop bucket show +show the contents of the nexthop bucket table or the nexthop buckets +selected by some criteria. +.RS +.TP +.BI id " ID " +.in +0 +show the nexthop buckets that belong to a nexthop group with a given id +.TP +.BI nhid " ID " +.in +0 +show the nexthop buckets that hold a nexthop with a given id +.TP +.BI dev " DEV " +.in +0 +show the nexthop buckets using the given device +.TP +.BI vrf " NAME " +.in +0 +show the nexthop buckets using devices associated with the vrf name +.TP +.BI master " DEV " +.in +0 +show the nexthop buckets using devices enslaved to given master device +.RE + +.TP +ip nexthop bucket get id ID index INDEX +get a single nexthop bucket by nexthop group id and bucket index + .SH EXAMPLES .PP ip nexthop ls -- 2.26.2