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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /src/network/tc/qfq.c | |
parent | Initial commit. (diff) | |
download | systemd-b750101eb236130cf056c675997decbac904cc49.tar.xz systemd-b750101eb236130cf056c675997decbac904cc49.zip |
Adding upstream version 252.22.upstream/252.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/network/tc/qfq.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/src/network/tc/qfq.c b/src/network/tc/qfq.c new file mode 100644 index 0000000..7702e6f --- /dev/null +++ b/src/network/tc/qfq.c @@ -0,0 +1,177 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later + * Copyright © 2020 VMware, Inc. */ + +#include <linux/pkt_sched.h> + +#include "parse-util.h" +#include "qdisc.h" +#include "qfq.h" +#include "string-util.h" + +#define QFQ_MAX_WEIGHT (1 << 10) +#define QFQ_MIN_MAX_PACKET 512 +#define QFQ_MAX_MAX_PACKET (1 << 16) + +const QDiscVTable qfq_vtable = { + .object_size = sizeof(QuickFairQueueing), + .tca_kind = "qfq", +}; + +static int quick_fair_queueing_class_fill_message(Link *link, TClass *tclass, sd_netlink_message *req) { + QuickFairQueueingClass *qfq; + int r; + + assert(link); + assert(tclass); + assert(req); + + assert_se(qfq = TCLASS_TO_QFQ(tclass)); + + r = sd_netlink_message_open_container_union(req, TCA_OPTIONS, "qfq"); + if (r < 0) + return r; + + if (qfq->weight > 0) { + r = sd_netlink_message_append_u32(req, TCA_QFQ_WEIGHT, qfq->weight); + if (r < 0) + return r; + } + + if (qfq->max_packet > 0) { + r = sd_netlink_message_append_u32(req, TCA_QFQ_LMAX, qfq->max_packet); + if (r < 0) + return r; + } + + r = sd_netlink_message_close_container(req); + if (r < 0) + return r; + + return 0; +} + +int config_parse_quick_fair_queueing_weight( + const char *unit, + const char *filename, + unsigned line, + const char *section, + unsigned section_line, + const char *lvalue, + int ltype, + const char *rvalue, + void *data, + void *userdata) { + + _cleanup_(tclass_free_or_set_invalidp) TClass *tclass = NULL; + QuickFairQueueingClass *qfq; + Network *network = ASSERT_PTR(data); + uint32_t v; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + + r = tclass_new_static(TCLASS_KIND_QFQ, network, filename, section_line, &tclass); + if (r == -ENOMEM) + return log_oom(); + if (r < 0) { + log_syntax(unit, LOG_WARNING, filename, line, r, + "Failed to create traffic control class, ignoring assignment: %m"); + return 0; + } + + qfq = TCLASS_TO_QFQ(tclass); + + if (isempty(rvalue)) { + qfq->weight = 0; + TAKE_PTR(tclass); + return 0; + } + + r = safe_atou32(rvalue, &v); + if (r < 0) { + log_syntax(unit, LOG_WARNING, filename, line, r, + "Failed to parse '%s=', ignoring assignment: %s", + lvalue, rvalue); + return 0; + } + + if (v == 0 || v > QFQ_MAX_WEIGHT) { + log_syntax(unit, LOG_WARNING, filename, line, 0, + "Invalid '%s=', ignoring assignment: %s", + lvalue, rvalue); + return 0; + } + + qfq->weight = v; + TAKE_PTR(tclass); + + return 0; +} + +int config_parse_quick_fair_queueing_max_packet( + const char *unit, + const char *filename, + unsigned line, + const char *section, + unsigned section_line, + const char *lvalue, + int ltype, + const char *rvalue, + void *data, + void *userdata) { + + _cleanup_(tclass_free_or_set_invalidp) TClass *tclass = NULL; + QuickFairQueueingClass *qfq; + Network *network = ASSERT_PTR(data); + uint64_t v; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + + r = tclass_new_static(TCLASS_KIND_QFQ, network, filename, section_line, &tclass); + if (r == -ENOMEM) + return log_oom(); + if (r < 0) { + log_syntax(unit, LOG_WARNING, filename, line, r, + "Failed to create traffic control class, ignoring assignment: %m"); + return 0; + } + + qfq = TCLASS_TO_QFQ(tclass); + + if (isempty(rvalue)) { + qfq->max_packet = 0; + TAKE_PTR(tclass); + return 0; + } + + r = parse_size(rvalue, 1024, &v); + if (r < 0) { + log_syntax(unit, LOG_WARNING, filename, line, r, + "Failed to parse '%s=', ignoring assignment: %s", + lvalue, rvalue); + return 0; + } + + if (v < QFQ_MIN_MAX_PACKET || v > QFQ_MAX_MAX_PACKET) { + log_syntax(unit, LOG_WARNING, filename, line, 0, + "Invalid '%s=', ignoring assignment: %s", + lvalue, rvalue); + return 0; + } + + qfq->max_packet = (uint32_t) v; + TAKE_PTR(tclass); + + return 0; +} + +const TClassVTable qfq_tclass_vtable = { + .object_size = sizeof(QuickFairQueueingClass), + .tca_kind = "qfq", + .fill_message = quick_fair_queueing_class_fill_message, +}; |