Adding upstream version 252.22.upstream/252.22

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 342 insertions, 0 deletions

diff --git a/src/network/tc/ets.c b/src/network/tc/ets.c
new file mode 100644
index 0000000..730b0a1
--- /dev/null
+++ b/src/network/tc/ets.c
@@ -0,0 +1,342 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <linux/pkt_sched.h>
+
+#include "alloc-util.h"
+#include "conf-parser.h"
+#include "ets.h"
+#include "extract-word.h"
+#include "memory-util.h"
+#include "netlink-util.h"
+#include "parse-util.h"
+#include "qdisc.h"
+#include "string-util.h"
+#include "tc-util.h"
+
+static int enhanced_transmission_selection_fill_message(Link *link, QDisc *qdisc, sd_netlink_message *req) {
+        EnhancedTransmissionSelection *ets;
+        int r;
+
+        assert(link);
+        assert(qdisc);
+        assert(req);
+
+        assert_se(ets = ETS(qdisc));
+
+        r = sd_netlink_message_open_container_union(req, TCA_OPTIONS, "ets");
+        if (r < 0)
+                return r;
+
+        r = sd_netlink_message_append_u8(req, TCA_ETS_NBANDS, ets->n_bands);
+        if (r < 0)
+                return r;
+
+        if (ets->n_strict > 0) {
+                r = sd_netlink_message_append_u8(req, TCA_ETS_NSTRICT, ets->n_strict);
+                if (r < 0)
+                        return r;
+        }
+
+        if (ets->n_quanta > 0) {
+                r = sd_netlink_message_open_container(req, TCA_ETS_QUANTA);
+                if (r < 0)
+                        return r;
+
+                for (unsigned i = 0; i < ets->n_quanta; i++) {
+                        r = sd_netlink_message_append_u32(req, TCA_ETS_QUANTA_BAND, ets->quanta[i]);
+                        if (r < 0)
+                                return r;
+                }
+
+                r = sd_netlink_message_close_container(req);
+                if (r < 0)
+                        return r;
+        }
+
+        if (ets->n_prio > 0) {
+                r = sd_netlink_message_open_container(req, TCA_ETS_PRIOMAP);
+                if (r < 0)
+                        return r;
+
+                for (unsigned i = 0; i < ets->n_prio; i++) {
+                        r = sd_netlink_message_append_u8(req, TCA_ETS_PRIOMAP_BAND, ets->prio[i]);
+                        if (r < 0)
+                                return r;
+                }
+
+                r = sd_netlink_message_close_container(req);
+                if (r < 0)
+                        return r;
+        }
+
+        r = sd_netlink_message_close_container(req);
+        if (r < 0)
+                return r;
+
+        return 0;
+}
+
+int config_parse_ets_u8(
+                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_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL;
+        EnhancedTransmissionSelection *ets;
+        Network *network = ASSERT_PTR(data);
+        uint8_t v, *p;
+        int r;
+
+        assert(filename);
+        assert(lvalue);
+        assert(rvalue);
+
+        r = qdisc_new_static(QDISC_KIND_ETS, network, filename, section_line, &qdisc);
+        if (r == -ENOMEM)
+                return log_oom();
+        if (r < 0) {
+                log_syntax(unit, LOG_WARNING, filename, line, r,
+                           "More than one kind of queueing discipline, ignoring assignment: %m");
+                return 0;
+        }
+
+        ets = ETS(qdisc);
+        if (streq(lvalue, "Bands"))
+                p = &ets->n_bands;
+        else if (streq(lvalue, "StrictBands"))
+                p = &ets->n_strict;
+        else
+                assert_not_reached();
+
+        if (isempty(rvalue)) {
+                *p = 0;
+
+                qdisc = NULL;
+                return 0;
+        }
+
+        r = safe_atou8(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 > TCQ_ETS_MAX_BANDS) {
+                log_syntax(unit, LOG_WARNING, filename, line, 0,
+                           "Invalid '%s='. The value must be <= %d, ignoring assignment: %s",
+                           lvalue, TCQ_ETS_MAX_BANDS, rvalue);
+                return 0;
+        }
+
+        *p = v;
+        qdisc = NULL;
+
+        return 0;
+}
+
+int config_parse_ets_quanta(
+                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_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL;
+        EnhancedTransmissionSelection *ets;
+        Network *network = ASSERT_PTR(data);
+        int r;
+
+        assert(filename);
+        assert(lvalue);
+        assert(rvalue);
+
+        r = qdisc_new_static(QDISC_KIND_ETS, network, filename, section_line, &qdisc);
+        if (r == -ENOMEM)
+                return log_oom();
+        if (r < 0) {
+                log_syntax(unit, LOG_WARNING, filename, line, r,
+                           "More than one kind of queueing discipline, ignoring assignment: %m");
+                return 0;
+        }
+
+        ets = ETS(qdisc);
+
+        if (isempty(rvalue)) {
+                memzero(ets->quanta, sizeof(uint32_t) * TCQ_ETS_MAX_BANDS);
+                ets->n_quanta = 0;
+
+                qdisc = NULL;
+                return 0;
+        }
+
+        for (const char *p = rvalue;;) {
+                _cleanup_free_ char *word = NULL;
+                uint64_t v;
+
+                r = extract_first_word(&p, &word, NULL, 0);
+                if (r == -ENOMEM)
+                        return log_oom();
+                if (r < 0) {
+                        log_syntax(unit, LOG_WARNING, filename, line, r,
+                                   "Failed to extract next value, ignoring: %m");
+                        break;
+                }
+                if (r == 0)
+                        break;
+
+                r = parse_size(word, 1024, &v);
+                if (r < 0) {
+                        log_syntax(unit, LOG_WARNING, filename, line, r,
+                                   "Failed to parse '%s=', ignoring assignment: %s",
+                                   lvalue, word);
+                        continue;
+                }
+                if (v == 0 || v > UINT32_MAX) {
+                        log_syntax(unit, LOG_WARNING, filename, line, 0,
+                                   "Invalid '%s=', ignoring assignment: %s",
+                                   lvalue, word);
+                        continue;
+                }
+                if (ets->n_quanta >= TCQ_ETS_MAX_BANDS) {
+                        log_syntax(unit, LOG_WARNING, filename, line, 0,
+                                   "Too many quanta in '%s=', ignoring assignment: %s",
+                                   lvalue, word);
+                        continue;
+                }
+
+                ets->quanta[ets->n_quanta++] = v;
+        }
+
+        qdisc = NULL;
+
+        return 0;
+}
+
+int config_parse_ets_prio(
+                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_(qdisc_free_or_set_invalidp) QDisc *qdisc = NULL;
+        EnhancedTransmissionSelection *ets;
+        Network *network = ASSERT_PTR(data);
+        int r;
+
+        assert(filename);
+        assert(lvalue);
+        assert(rvalue);
+
+        r = qdisc_new_static(QDISC_KIND_ETS, network, filename, section_line, &qdisc);
+        if (r == -ENOMEM)
+                return log_oom();
+        if (r < 0) {
+                log_syntax(unit, LOG_WARNING, filename, line, r,
+                           "More than one kind of queueing discipline, ignoring assignment: %m");
+                return 0;
+        }
+
+        ets = ETS(qdisc);
+
+        if (isempty(rvalue)) {
+                memzero(ets->prio, sizeof(uint8_t) * (TC_PRIO_MAX + 1));
+                ets->n_prio = 0;
+
+                qdisc = NULL;
+                return 0;
+        }
+
+        for (const char *p = rvalue;;) {
+                _cleanup_free_ char *word = NULL;
+                uint8_t v;
+
+                r = extract_first_word(&p, &word, NULL, 0);
+                if (r == -ENOMEM)
+                        return log_oom();
+                if (r < 0) {
+                        log_syntax(unit, LOG_WARNING, filename, line, r,
+                                   "Failed to extract next value, ignoring: %m");
+                        break;
+                }
+                if (r == 0)
+                        break;
+
+                r = safe_atou8(word, &v);
+                if (r < 0) {
+                        log_syntax(unit, LOG_WARNING, filename, line, r,
+                                   "Failed to parse '%s=', ignoring assignment: %s",
+                                   lvalue, word);
+                        continue;
+                }
+                if (ets->n_prio > TC_PRIO_MAX) {
+                        log_syntax(unit, LOG_WARNING, filename, line, 0,
+                                   "Too many priomap in '%s=', ignoring assignment: %s",
+                                   lvalue, word);
+                        continue;
+                }
+
+                ets->prio[ets->n_prio++] = v;
+        }
+
+        qdisc = NULL;
+
+        return 0;
+}
+
+static int enhanced_transmission_selection_verify(QDisc *qdisc) {
+        EnhancedTransmissionSelection *ets;
+
+        assert(qdisc);
+
+        ets = ETS(qdisc);
+
+        if (ets->n_bands == 0)
+                ets->n_bands = ets->n_strict + ets->n_quanta;
+
+        if (ets->n_bands == 0)
+                return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
+                                         "%s: At least one of Band=, Strict=, or Quanta= must be specified. "
+                                         "Ignoring [EnhancedTransmissionSelection] section from line %u.",
+                                         qdisc->section->filename, qdisc->section->line);
+
+        if (ets->n_bands < ets->n_strict + ets->n_quanta)
+                return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
+                                         "%s: Not enough total bands to cover all the strict bands and quanta. "
+                                         "Ignoring [EnhancedTransmissionSelection] section from line %u.",
+                                         qdisc->section->filename, qdisc->section->line);
+
+        for (unsigned i = 0; i < ets->n_prio; i++)
+                if (ets->prio[i] >= ets->n_bands)
+                        return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
+                                                 "%s: PriorityMap= element is out of bands. "
+                                                 "Ignoring [EnhancedTransmissionSelection] section from line %u.",
+                                                 qdisc->section->filename, qdisc->section->line);
+
+        return 0;
+}
+
+const QDiscVTable ets_vtable = {
+        .object_size = sizeof(EnhancedTransmissionSelection),
+        .tca_kind = "ets",
+        .fill_message = enhanced_transmission_selection_fill_message,
+        .verify = enhanced_transmission_selection_verify,
+};