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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later |
a7476065 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 "fifo.h" | |
9 | #include "netlink-util.h" | |
10 | #include "parse-util.h" | |
11 | #include "string-util.h" | |
12 | ||
13 | static int fifo_fill_message(Link *link, QDisc *qdisc, sd_netlink_message *req) { | |
a7476065 SS |
14 | FirstInFirstOut *fifo; |
15 | int r; | |
16 | ||
17 | assert(link); | |
18 | assert(qdisc); | |
19 | assert(req); | |
20 | ||
89346ac6 | 21 | switch (qdisc->kind) { |
c853f594 | 22 | case QDISC_KIND_PFIFO: |
16924f54 | 23 | assert_se(fifo = PFIFO(qdisc)); |
c853f594 SS |
24 | break; |
25 | case QDISC_KIND_BFIFO: | |
16924f54 | 26 | assert_se(fifo = BFIFO(qdisc)); |
c853f594 | 27 | break; |
053a2ddb | 28 | case QDISC_KIND_PFIFO_HEAD_DROP: |
16924f54 | 29 | assert_se(fifo = PFIFO_HEAD_DROP(qdisc)); |
053a2ddb | 30 | break; |
c853f594 | 31 | default: |
04499a70 | 32 | assert_not_reached(); |
c853f594 | 33 | } |
a7476065 | 34 | |
16924f54 ZJS |
35 | const struct tc_fifo_qopt opt = { .limit = fifo->limit }; |
36 | r = sd_netlink_message_append_data(req, TCA_OPTIONS, &opt, sizeof(opt)); | |
a7476065 | 37 | if (r < 0) |
16924f54 | 38 | return r; |
a7476065 SS |
39 | |
40 | return 0; | |
41 | } | |
42 | ||
c853f594 | 43 | int config_parse_pfifo_size( |
a7476065 SS |
44 | const char *unit, |
45 | const char *filename, | |
46 | unsigned line, | |
47 | const char *section, | |
48 | unsigned section_line, | |
49 | const char *lvalue, | |
50 | int ltype, | |
51 | const char *rvalue, | |
52 | void *data, | |
53 | void *userdata) { | |
54 | ||
55 | _cleanup_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL; | |
99534007 | 56 | Network *network = ASSERT_PTR(data); |
a7476065 SS |
57 | FirstInFirstOut *fifo; |
58 | int r; | |
59 | ||
60 | assert(filename); | |
61 | assert(lvalue); | |
62 | assert(rvalue); | |
a7476065 | 63 | |
053a2ddb | 64 | r = qdisc_new_static(ltype, network, filename, section_line, &qdisc); |
a7476065 SS |
65 | if (r == -ENOMEM) |
66 | return log_oom(); | |
d96edb2c YW |
67 | if (r < 0) { |
68 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
69 | "More than one kind of queueing discipline, ignoring assignment: %m"); | |
70 | return 0; | |
71 | } | |
a7476065 | 72 | |
89346ac6 | 73 | switch (qdisc->kind) { |
053a2ddb SS |
74 | case QDISC_KIND_PFIFO: |
75 | fifo = PFIFO(qdisc); | |
76 | break; | |
77 | case QDISC_KIND_PFIFO_HEAD_DROP: | |
78 | fifo = PFIFO_HEAD_DROP(qdisc); | |
79 | break; | |
80 | default: | |
04499a70 | 81 | assert_not_reached(); |
053a2ddb | 82 | } |
a7476065 SS |
83 | |
84 | if (isempty(rvalue)) { | |
85 | fifo->limit = 0; | |
86 | ||
0132453c | 87 | TAKE_PTR(qdisc); |
a7476065 SS |
88 | return 0; |
89 | } | |
90 | ||
91 | r = safe_atou32(rvalue, &fifo->limit); | |
92 | if (r < 0) { | |
d96edb2c | 93 | log_syntax(unit, LOG_WARNING, filename, line, r, |
a7476065 SS |
94 | "Failed to parse '%s=', ignoring assignment: %s", |
95 | lvalue, rvalue); | |
96 | return 0; | |
97 | } | |
98 | ||
0132453c | 99 | TAKE_PTR(qdisc); |
a7476065 SS |
100 | return 0; |
101 | } | |
102 | ||
c853f594 SS |
103 | int config_parse_bfifo_size( |
104 | const char *unit, | |
105 | const char *filename, | |
106 | unsigned line, | |
107 | const char *section, | |
108 | unsigned section_line, | |
109 | const char *lvalue, | |
110 | int ltype, | |
111 | const char *rvalue, | |
112 | void *data, | |
113 | void *userdata) { | |
114 | ||
115 | _cleanup_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL; | |
99534007 | 116 | Network *network = ASSERT_PTR(data); |
c853f594 SS |
117 | FirstInFirstOut *fifo; |
118 | uint64_t u; | |
119 | int r; | |
120 | ||
121 | assert(filename); | |
122 | assert(lvalue); | |
123 | assert(rvalue); | |
c853f594 SS |
124 | |
125 | r = qdisc_new_static(QDISC_KIND_BFIFO, network, filename, section_line, &qdisc); | |
126 | if (r == -ENOMEM) | |
127 | return log_oom(); | |
d96edb2c YW |
128 | if (r < 0) { |
129 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
130 | "More than one kind of queueing discipline, ignoring assignment: %m"); | |
131 | return 0; | |
132 | } | |
c853f594 SS |
133 | |
134 | fifo = BFIFO(qdisc); | |
135 | ||
136 | if (isempty(rvalue)) { | |
137 | fifo->limit = 0; | |
138 | ||
0132453c | 139 | TAKE_PTR(qdisc); |
c853f594 SS |
140 | return 0; |
141 | } | |
142 | ||
c03ef420 | 143 | r = parse_size(rvalue, 1024, &u); |
c853f594 | 144 | if (r < 0) { |
d96edb2c | 145 | log_syntax(unit, LOG_WARNING, filename, line, r, |
c853f594 SS |
146 | "Failed to parse '%s=', ignoring assignment: %s", |
147 | lvalue, rvalue); | |
148 | return 0; | |
149 | } | |
150 | if (u > UINT32_MAX) { | |
d96edb2c | 151 | log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid '%s=', ignoring assignment: %s", |
c853f594 SS |
152 | lvalue, rvalue); |
153 | return 0; | |
154 | } | |
155 | ||
156 | fifo->limit = (uint32_t) u; | |
157 | ||
0132453c | 158 | TAKE_PTR(qdisc); |
c853f594 SS |
159 | return 0; |
160 | } | |
161 | ||
a7476065 SS |
162 | const QDiscVTable pfifo_vtable = { |
163 | .object_size = sizeof(FirstInFirstOut), | |
164 | .tca_kind = "pfifo", | |
165 | .fill_message = fifo_fill_message, | |
166 | }; | |
c853f594 SS |
167 | |
168 | const QDiscVTable bfifo_vtable = { | |
169 | .object_size = sizeof(FirstInFirstOut), | |
170 | .tca_kind = "bfifo", | |
171 | .fill_message = fifo_fill_message, | |
172 | }; | |
053a2ddb SS |
173 | |
174 | const QDiscVTable pfifo_head_drop_vtable = { | |
175 | .object_size = sizeof(FirstInFirstOut), | |
176 | .tca_kind = "pfifo_head_drop", | |
177 | .fill_message = fifo_fill_message, | |
178 | }; | |
1a95964b SS |
179 | |
180 | const QDiscVTable pfifo_fast_vtable = { | |
181 | .object_size = sizeof(FirstInFirstOut), | |
182 | .tca_kind = "pfifo_fast", | |
183 | }; |