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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later |
7f224020 SS |
2 | * Copyright © 2020 VMware, Inc. */ |
3 | ||
4 | #include <linux/pkt_sched.h> | |
5 | ||
6 | #include "alloc-util.h" | |
7 | #include "conf-parser.h" | |
8 | #include "hhf.h" | |
9 | #include "netlink-util.h" | |
10 | #include "parse-util.h" | |
11 | #include "string-util.h" | |
12 | #include "util.h" | |
13 | ||
14 | static int heavy_hitter_filter_fill_message(Link *link, QDisc *qdisc, sd_netlink_message *req) { | |
15 | HeavyHitterFilter *hhf; | |
16 | int r; | |
17 | ||
18 | assert(link); | |
19 | assert(qdisc); | |
20 | assert(req); | |
21 | ||
22 | hhf = HHF(qdisc); | |
23 | ||
24 | r = sd_netlink_message_open_container_union(req, TCA_OPTIONS, "hhf"); | |
25 | if (r < 0) | |
26 | return log_link_error_errno(link, r, "Could not open container TCA_OPTIONS: %m"); | |
27 | ||
28 | if (hhf->packet_limit > 0) { | |
29 | r = sd_netlink_message_append_u32(req, TCA_HHF_BACKLOG_LIMIT, hhf->packet_limit); | |
30 | if (r < 0) | |
31 | return log_link_error_errno(link, r, "Could not append TCA_HHF_BACKLOG_LIMIT attribute: %m"); | |
32 | } | |
33 | ||
34 | r = sd_netlink_message_close_container(req); | |
35 | if (r < 0) | |
36 | return log_link_error_errno(link, r, "Could not close container TCA_OPTIONS: %m"); | |
37 | ||
38 | return 0; | |
39 | } | |
40 | ||
41 | int config_parse_heavy_hitter_filter_packet_limit( | |
42 | const char *unit, | |
43 | const char *filename, | |
44 | unsigned line, | |
45 | const char *section, | |
46 | unsigned section_line, | |
47 | const char *lvalue, | |
48 | int ltype, | |
49 | const char *rvalue, | |
50 | void *data, | |
51 | void *userdata) { | |
52 | ||
53 | _cleanup_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL; | |
54 | HeavyHitterFilter *hhf; | |
55 | Network *network = data; | |
56 | int r; | |
57 | ||
58 | assert(filename); | |
59 | assert(lvalue); | |
60 | assert(rvalue); | |
61 | assert(data); | |
62 | ||
63 | r = qdisc_new_static(QDISC_KIND_HHF, network, filename, section_line, &qdisc); | |
64 | if (r == -ENOMEM) | |
65 | return log_oom(); | |
d96edb2c YW |
66 | if (r < 0) { |
67 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
68 | "More than one kind of queueing discipline, ignoring assignment: %m"); | |
69 | return 0; | |
70 | } | |
7f224020 SS |
71 | |
72 | hhf = HHF(qdisc); | |
73 | ||
74 | if (isempty(rvalue)) { | |
75 | hhf->packet_limit = 0; | |
76 | ||
77 | qdisc = NULL; | |
78 | return 0; | |
79 | } | |
80 | ||
81 | r = safe_atou32(rvalue, &hhf->packet_limit); | |
82 | if (r < 0) { | |
d96edb2c | 83 | log_syntax(unit, LOG_WARNING, filename, line, r, |
7f224020 SS |
84 | "Failed to parse '%s=', ignoring assignment: %s", |
85 | lvalue, rvalue); | |
86 | return 0; | |
87 | } | |
88 | ||
89 | qdisc = NULL; | |
90 | ||
91 | return 0; | |
92 | } | |
93 | ||
94 | const QDiscVTable hhf_vtable = { | |
95 | .object_size = sizeof(HeavyHitterFilter), | |
96 | .tca_kind = "hhf", | |
97 | .fill_message = heavy_hitter_filter_fill_message, | |
98 | }; |